net/wireless/nl80211.c

   1 /*
   2  * This is the new netlink-based wireless configuration interface.
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  * Copyright 2013-2014  Intel Mobile Communications GmbH
   6  * Copyright 2015       Intel Deutschland GmbH
   7  */
   8
   9 #include <linux/if.h>
  10 #include <linux/module.h>
  11 #include <linux/err.h>
  12 #include <linux/slab.h>
  13 #include <linux/list.h>
  14 #include <linux/if_ether.h>
  15 #include <linux/ieee80211.h>
  16 #include <linux/nl80211.h>
  17 #include <linux/rtnetlink.h>
  18 #include <linux/netlink.h>
  19 #include <linux/nospec.h>
  20 #include <linux/etherdevice.h>
  21 #include <net/net_namespace.h>
  22 #include <net/genetlink.h>
  23 #include <net/cfg80211.h>
  24 #include <net/sock.h>
  25 #include <net/inet_connection_sock.h>
  26 #include "core.h"
  27 #include "nl80211.h"
  28 #include "reg.h"
  29 #include "rdev-ops.h"
  30
  31 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  32                                    struct genl_info *info,
  33                                    struct cfg80211_crypto_settings *settings,
  34                                    int cipher_limit);
  35
  36 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
  37                             struct genl_info *info);
  38 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
  39                               struct genl_info *info);
  40
  41 /* the netlink family */
  42 static struct genl_family nl80211_fam = {
  43         .id = GENL_ID_GENERATE,         /* don't bother with a hardcoded ID */
  44         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
  45         .hdrsize = 0,                   /* no private header */
  46         .version = 1,                   /* no particular meaning now */
  47         .maxattr = NL80211_ATTR_MAX,
  48         .netnsok = true,
  49         .pre_doit = nl80211_pre_doit,
  50         .post_doit = nl80211_post_doit,
  51 };
  52
  53 /* multicast groups */
  54 enum nl80211_multicast_groups {
  55         NL80211_MCGRP_CONFIG,
  56         NL80211_MCGRP_SCAN,
  57         NL80211_MCGRP_REGULATORY,
  58         NL80211_MCGRP_MLME,
  59         NL80211_MCGRP_VENDOR,
  60         NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
  61 };
  62
  63 static const struct genl_multicast_group nl80211_mcgrps[] = {
  64         [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
  65         [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
  66         [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
  67         [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
  68         [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
  69 #ifdef CONFIG_NL80211_TESTMODE
  70         [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
  71 #endif
  72 };
  73
  74 /* returns ERR_PTR values */
  75 static struct wireless_dev *
  76 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
  77 {
  78         struct cfg80211_registered_device *rdev;
  79         struct wireless_dev *result = NULL;
  80         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  81         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  82         u64 wdev_id;
  83         int wiphy_idx = -1;
  84         int ifidx = -1;
  85
  86         ASSERT_RTNL();
  87
  88         if (!have_ifidx && !have_wdev_id)
  89                 return ERR_PTR(-EINVAL);
  90
  91         if (have_ifidx)
  92                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  93         if (have_wdev_id) {
  94                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  95                 wiphy_idx = wdev_id >> 32;
  96         }
  97
  98         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  99                 struct wireless_dev *wdev;
 100
 101                 if (wiphy_net(&rdev->wiphy) != netns)
 102                         continue;
 103
 104                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
 105                         continue;
 106
 107                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
 108                         if (have_ifidx && wdev->netdev &&
 109                             wdev->netdev->ifindex == ifidx) {
 110                                 result = wdev;
 111                                 break;
 112                         }
 113                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 114                                 result = wdev;
 115                                 break;
 116                         }
 117                 }
 118
 119                 if (result)
 120                         break;
 121         }
 122
 123         if (result)
 124                 return result;
 125         return ERR_PTR(-ENODEV);
 126 }
 127
 128 static struct cfg80211_registered_device *
 129 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 130 {
 131         struct cfg80211_registered_device *rdev = NULL, *tmp;
 132         struct net_device *netdev;
 133
 134         ASSERT_RTNL();
 135
 136         if (!attrs[NL80211_ATTR_WIPHY] &&
 137             !attrs[NL80211_ATTR_IFINDEX] &&
 138             !attrs[NL80211_ATTR_WDEV])
 139                 return ERR_PTR(-EINVAL);
 140
 141         if (attrs[NL80211_ATTR_WIPHY])
 142                 rdev = cfg80211_rdev_by_wiphy_idx(
 143                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 144
 145         if (attrs[NL80211_ATTR_WDEV]) {
 146                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 147                 struct wireless_dev *wdev;
 148                 bool found = false;
 149
 150                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 151                 if (tmp) {
 152                         /* make sure wdev exists */
 153                         list_for_each_entry(wdev, &tmp->wdev_list, list) {
 154                                 if (wdev->identifier != (u32)wdev_id)
 155                                         continue;
 156                                 found = true;
 157                                 break;
 158                         }
 159
 160                         if (!found)
 161                                 tmp = NULL;
 162
 163                         if (rdev && tmp != rdev)
 164                                 return ERR_PTR(-EINVAL);
 165                         rdev = tmp;
 166                 }
 167         }
 168
 169         if (attrs[NL80211_ATTR_IFINDEX]) {
 170                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 171                 netdev = __dev_get_by_index(netns, ifindex);
 172                 if (netdev) {
 173                         if (netdev->ieee80211_ptr)
 174                                 tmp = wiphy_to_rdev(
 175                                         netdev->ieee80211_ptr->wiphy);
 176                         else
 177                                 tmp = NULL;
 178
 179                         /* not wireless device -- return error */
 180                         if (!tmp)
 181                                 return ERR_PTR(-EINVAL);
 182
 183                         /* mismatch -- return error */
 184                         if (rdev && tmp != rdev)
 185                                 return ERR_PTR(-EINVAL);
 186
 187                         rdev = tmp;
 188                 }
 189         }
 190
 191         if (!rdev)
 192                 return ERR_PTR(-ENODEV);
 193
 194         if (netns != wiphy_net(&rdev->wiphy))
 195                 return ERR_PTR(-ENODEV);
 196
 197         return rdev;
 198 }
 199
 200 /*
 201  * This function returns a pointer to the driver
 202  * that the genl_info item that is passed refers to.
 203  *
 204  * The result of this can be a PTR_ERR and hence must
 205  * be checked with IS_ERR() for errors.
 206  */
 207 static struct cfg80211_registered_device *
 208 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 209 {
 210         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 211 }
 212
 213 /* policy for the attributes */
 214 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 215         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 216         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 217                                       .len = 20-1 },
 218         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 219
 220         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 221         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 222         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 223         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 224         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 225
 226         [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
 227         [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
 228         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 229         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 230         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 231         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 232
 233         [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
 234         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 235         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 236
 237         [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
 238         [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
 239
 240         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 241         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 242                                     .len = WLAN_MAX_KEY_LEN },
 243         [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
 244         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 245         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 246         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 247         [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
 248
 249         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 250         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 251         [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
 252                                        .len = IEEE80211_MAX_DATA_LEN },
 253         [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
 254                                        .len = IEEE80211_MAX_DATA_LEN },
 255         [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
 256         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 257         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 258         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 259                                                .len = NL80211_MAX_SUPP_RATES },
 260         [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
 261         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 262         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 263         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 264                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 265         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
 266
 267         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 268         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 269
 270         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 271         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 272         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 273         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 274                                            .len = NL80211_MAX_SUPP_RATES },
 275         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 276
 277         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 278         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 279
 280         [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
 281
 282         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 283         [NL80211_ATTR_IE] = { .type = NLA_BINARY,
 284                               .len = IEEE80211_MAX_DATA_LEN },
 285         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 286         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 287
 288         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 289                                 .len = IEEE80211_MAX_SSID_LEN },
 290         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 291         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 292         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 293         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 294         [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
 295         [NL80211_ATTR_STA_FLAGS2] = {
 296                 .len = sizeof(struct nl80211_sta_flag_update),
 297         },
 298         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 299         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 300         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 301         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 302         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 303         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 304         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 305         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 306         [NL80211_ATTR_PMKID] = { .len = WLAN_PMKID_LEN },
 307         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 308         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 309         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 310         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 311                                  .len = IEEE80211_MAX_DATA_LEN },
 312         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 313         [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
 314         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 315         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 316         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 317         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 318         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 319         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 320         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 321         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 322         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 323         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 324         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 325         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 326         [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
 327         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 328         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 329         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 330         [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
 331         [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
 332                                          .len = IEEE80211_MAX_DATA_LEN },
 333         [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
 334                                          .len = IEEE80211_MAX_DATA_LEN },
 335         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 336         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 337         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 338         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 339         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 340         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 341         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 342         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 343         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 344         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 345         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 346                                       .len = IEEE80211_MAX_DATA_LEN },
 347         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 348         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 349         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 350                 .len = NL80211_HT_CAPABILITY_LEN
 351         },
 352         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 353         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 354         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 355         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 356         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 357         [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
 358         [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
 359         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 360         [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
 361         [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
 362         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] = {. type = NLA_U32 },
 363         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 364         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 365         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 366         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 367         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 368         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 369         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 370                 .len = NL80211_VHT_CAPABILITY_LEN,
 371         },
 372         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 373         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 374                                   .len = IEEE80211_MAX_DATA_LEN },
 375         [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
 376         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 377         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 378         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 379         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
 380         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
 381         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
 382         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
 383         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 384         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 385         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 386         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 387         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 388         [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
 389                                    .len = IEEE80211_QOS_MAP_LEN_MAX },
 390         [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
 391         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 392         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 393         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 394         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 395         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 396         [NL80211_ATTR_TSID] = { .type = NLA_U8 },
 397         [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
 398         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 399         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 400         [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
 401         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 402         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 403         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 404         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 405 };
 406
 407 /* policy for the key attributes */
 408 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 409         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 410         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 411         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 412         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 413         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 414         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 415         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 416         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 417 };
 418
 419 /* policy for the key default flags */
 420 static const struct nla_policy
 421 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 422         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 423         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 424 };
 425
 426 /* policy for WoWLAN attributes */
 427 static const struct nla_policy
 428 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 429         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 430         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 431         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 432         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 433         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 434         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 435         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 436         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 437         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 438         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 439 };
 440
 441 static const struct nla_policy
 442 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 443         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 444         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 445         [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
 446         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 447         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 448         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
 449         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 450                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 451         },
 452         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 453                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 454         },
 455         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 456         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
 457         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
 458 };
 459
 460 /* policy for coalesce rule attributes */
 461 static const struct nla_policy
 462 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 463         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 464         [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
 465         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 466 };
 467
 468 /* policy for GTK rekey offload attributes */
 469 static const struct nla_policy
 470 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 471         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 472         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 473         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 474 };
 475
 476 static const struct nla_policy
 477 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 478         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 479                                                  .len = IEEE80211_MAX_SSID_LEN },
 480         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 481 };
 482
 483 static const struct nla_policy
 484 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 485         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 486         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 487 };
 488
 489 /* policy for packet pattern attributes */
 490 static const struct nla_policy
 491 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 492         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 493         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 494         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 495 };
 496
 497 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
 498                                      struct netlink_callback *cb,
 499                                      struct cfg80211_registered_device **rdev,
 500                                      struct wireless_dev **wdev)
 501 {
 502         int err;
 503
 504         if (!cb->args[0]) {
 505                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 506                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
 507                                   nl80211_policy);
 508                 if (err)
 509                         return err;
 510
 511                 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
 512                                                    nl80211_fam.attrbuf);
 513                 if (IS_ERR(*wdev))
 514                         return PTR_ERR(*wdev);
 515                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 516                 /* 0 is the first index - add 1 to parse only once */
 517                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 518                 cb->args[1] = (*wdev)->identifier;
 519         } else {
 520                 /* subtract the 1 again here */
 521                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 522                 struct wireless_dev *tmp;
 523
 524                 if (!wiphy)
 525                         return -ENODEV;
 526                 *rdev = wiphy_to_rdev(wiphy);
 527                 *wdev = NULL;
 528
 529                 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
 530                         if (tmp->identifier == cb->args[1]) {
 531                                 *wdev = tmp;
 532                                 break;
 533                         }
 534                 }
 535
 536                 if (!*wdev)
 537                         return -ENODEV;
 538         }
 539
 540         return 0;
 541 }
 542
 543 /* IE validation */
 544 static bool is_valid_ie_attr(const struct nlattr *attr)
 545 {
 546         const u8 *pos;
 547         int len;
 548
 549         if (!attr)
 550                 return true;
 551
 552         pos = nla_data(attr);
 553         len = nla_len(attr);
 554
 555         while (len) {
 556                 u8 elemlen;
 557
 558                 if (len < 2)
 559                         return false;
 560                 len -= 2;
 561
 562                 elemlen = pos[1];
 563                 if (elemlen > len)
 564                         return false;
 565
 566                 len -= elemlen;
 567                 pos += 2 + elemlen;
 568         }
 569
 570         return true;
 571 }
 572
 573 /* message building helper */
 574 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 575                                    int flags, u8 cmd)
 576 {
 577         /* since there is no private header just add the generic one */
 578         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 579 }
 580
 581 static int nl80211_msg_put_channel(struct sk_buff *msg,
 582                                    struct ieee80211_channel *chan,
 583                                    bool large)
 584 {
 585         /* Some channels must be completely excluded from the
 586          * list to protect old user-space tools from breaking
 587          */
 588         if (!large && chan->flags &
 589             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 590                 return 0;
 591
 592         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 593                         chan->center_freq))
 594                 goto nla_put_failure;
 595
 596         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 597             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 598                 goto nla_put_failure;
 599         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 600                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 601                         goto nla_put_failure;
 602                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 603                         goto nla_put_failure;
 604         }
 605         if (chan->flags & IEEE80211_CHAN_RADAR) {
 606                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 607                         goto nla_put_failure;
 608                 if (large) {
 609                         u32 time;
 610
 611                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 612
 613                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 614                                         chan->dfs_state))
 615                                 goto nla_put_failure;
 616                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 617                                         time))
 618                                 goto nla_put_failure;
 619                         if (nla_put_u32(msg,
 620                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 621                                         chan->dfs_cac_ms))
 622                                 goto nla_put_failure;
 623                 }
 624         }
 625
 626         if (large) {
 627                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 628                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 629                         goto nla_put_failure;
 630                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 631                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 632                         goto nla_put_failure;
 633                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 634                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 635                         goto nla_put_failure;
 636                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 637                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 638                         goto nla_put_failure;
 639                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 640                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 641                         goto nla_put_failure;
 642                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
 643                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
 644                         goto nla_put_failure;
 645                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 646                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 647                         goto nla_put_failure;
 648                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 649                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 650                         goto nla_put_failure;
 651         }
 652
 653         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 654                         DBM_TO_MBM(chan->max_power)))
 655                 goto nla_put_failure;
 656
 657         return 0;
 658
 659  nla_put_failure:
 660         return -ENOBUFS;
 661 }
 662
 663 /* netlink command implementations */
 664
 665 struct key_parse {
 666         struct key_params p;
 667         int idx;
 668         int type;
 669         bool def, defmgmt;
 670         bool def_uni, def_multi;
 671 };
 672
 673 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
 674 {
 675         struct nlattr *tb[NL80211_KEY_MAX + 1];
 676         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 677                                    nl80211_key_policy);
 678         if (err)
 679                 return err;
 680
 681         k->def = !!tb[NL80211_KEY_DEFAULT];
 682         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 683
 684         if (k->def) {
 685                 k->def_uni = true;
 686                 k->def_multi = true;
 687         }
 688         if (k->defmgmt)
 689                 k->def_multi = true;
 690
 691         if (tb[NL80211_KEY_IDX])
 692                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 693
 694         if (tb[NL80211_KEY_DATA]) {
 695                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 696                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 697         }
 698
 699         if (tb[NL80211_KEY_SEQ]) {
 700                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 701                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 702         }
 703
 704         if (tb[NL80211_KEY_CIPHER])
 705                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 706
 707         if (tb[NL80211_KEY_TYPE]) {
 708                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 709                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 710                         return -EINVAL;
 711         }
 712
 713         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 714                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 715                 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 716                                        tb[NL80211_KEY_DEFAULT_TYPES],
 717                                        nl80211_key_default_policy);
 718                 if (err)
 719                         return err;
 720
 721                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 722                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 723         }
 724
 725         return 0;
 726 }
 727
 728 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 729 {
 730         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 731                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 732                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 733         }
 734
 735         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 736                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 737                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 738         }
 739
 740         if (info->attrs[NL80211_ATTR_KEY_IDX])
 741                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 742
 743         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 744                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 745
 746         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 747         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 748
 749         if (k->def) {
 750                 k->def_uni = true;
 751                 k->def_multi = true;
 752         }
 753         if (k->defmgmt)
 754                 k->def_multi = true;
 755
 756         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 757                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 758                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 759                         return -EINVAL;
 760         }
 761
 762         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 763                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 764                 int err = nla_parse_nested(
 765                                 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 766                                 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 767                                 nl80211_key_default_policy);
 768                 if (err)
 769                         return err;
 770
 771                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 772                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 773         }
 774
 775         return 0;
 776 }
 777
 778 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 779 {
 780         int err;
 781
 782         memset(k, 0, sizeof(*k));
 783         k->idx = -1;
 784         k->type = -1;
 785
 786         if (info->attrs[NL80211_ATTR_KEY])
 787                 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
 788         else
 789                 err = nl80211_parse_key_old(info, k);
 790
 791         if (err)
 792                 return err;
 793
 794         if (k->def && k->defmgmt)
 795                 return -EINVAL;
 796
 797         if (k->defmgmt) {
 798                 if (k->def_uni || !k->def_multi)
 799                         return -EINVAL;
 800         }
 801
 802         if (k->idx != -1) {
 803                 if (k->defmgmt) {
 804                         if (k->idx < 4 || k->idx > 5)
 805                                 return -EINVAL;
 806                 } else if (k->def) {
 807                         if (k->idx < 0 || k->idx > 3)
 808                                 return -EINVAL;
 809                 } else {
 810                         if (k->idx < 0 || k->idx > 5)
 811                                 return -EINVAL;
 812                 }
 813         }
 814
 815         return 0;
 816 }
 817
 818 static struct cfg80211_cached_keys *
 819 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 820                        struct nlattr *keys, bool *no_ht)
 821 {
 822         struct key_parse parse;
 823         struct nlattr *key;
 824         struct cfg80211_cached_keys *result;
 825         int rem, err, def = 0;
 826
 827         result = kzalloc(sizeof(*result), GFP_KERNEL);
 828         if (!result)
 829                 return ERR_PTR(-ENOMEM);
 830
 831         result->def = -1;
 832         result->defmgmt = -1;
 833
 834         nla_for_each_nested(key, keys, rem) {
 835                 memset(&parse, 0, sizeof(parse));
 836                 parse.idx = -1;
 837
 838                 err = nl80211_parse_key_new(key, &parse);
 839                 if (err)
 840                         goto error;
 841                 err = -EINVAL;
 842                 if (!parse.p.key)
 843                         goto error;
 844                 if (parse.idx < 0 || parse.idx > 4)
 845                         goto error;
 846                 if (parse.def) {
 847                         if (def)
 848                                 goto error;
 849                         def = 1;
 850                         result->def = parse.idx;
 851                         if (!parse.def_uni || !parse.def_multi)
 852                                 goto error;
 853                 } else if (parse.defmgmt)
 854                         goto error;
 855                 err = cfg80211_validate_key_settings(rdev, &parse.p,
 856                                                      parse.idx, false, NULL);
 857                 if (err)
 858                         goto error;
 859                 result->params[parse.idx].cipher = parse.p.cipher;
 860                 result->params[parse.idx].key_len = parse.p.key_len;
 861                 result->params[parse.idx].key = result->data[parse.idx];
 862                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
 863
 864                 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
 865                     parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
 866                         if (no_ht)
 867                                 *no_ht = true;
 868                 }
 869         }
 870
 871         return result;
 872  error:
 873         kfree(result);
 874         return ERR_PTR(err);
 875 }
 876
 877 static int nl80211_key_allowed(struct wireless_dev *wdev)
 878 {
 879         ASSERT_WDEV_LOCK(wdev);
 880
 881         switch (wdev->iftype) {
 882         case NL80211_IFTYPE_AP:
 883         case NL80211_IFTYPE_AP_VLAN:
 884         case NL80211_IFTYPE_P2P_GO:
 885         case NL80211_IFTYPE_MESH_POINT:
 886                 break;
 887         case NL80211_IFTYPE_ADHOC:
 888         case NL80211_IFTYPE_STATION:
 889         case NL80211_IFTYPE_P2P_CLIENT:
 890                 if (!wdev->current_bss)
 891                         return -ENOLINK;
 892                 break;
 893         case NL80211_IFTYPE_UNSPECIFIED:
 894         case NL80211_IFTYPE_OCB:
 895         case NL80211_IFTYPE_MONITOR:
 896         case NL80211_IFTYPE_P2P_DEVICE:
 897         case NL80211_IFTYPE_WDS:
 898         case NUM_NL80211_IFTYPES:
 899                 return -EINVAL;
 900         }
 901
 902         return 0;
 903 }
 904
 905 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
 906                                                         struct nlattr *tb)
 907 {
 908         struct ieee80211_channel *chan;
 909
 910         if (tb == NULL)
 911                 return NULL;
 912         chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
 913         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
 914                 return NULL;
 915         return chan;
 916 }
 917
 918 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
 919 {
 920         struct nlattr *nl_modes = nla_nest_start(msg, attr);
 921         int i;
 922
 923         if (!nl_modes)
 924                 goto nla_put_failure;
 925
 926         i = 0;
 927         while (ifmodes) {
 928                 if ((ifmodes & 1) && nla_put_flag(msg, i))
 929                         goto nla_put_failure;
 930                 ifmodes >>= 1;
 931                 i++;
 932         }
 933
 934         nla_nest_end(msg, nl_modes);
 935         return 0;
 936
 937 nla_put_failure:
 938         return -ENOBUFS;
 939 }
 940
 941 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
 942                                           struct sk_buff *msg,
 943                                           bool large)
 944 {
 945         struct nlattr *nl_combis;
 946         int i, j;
 947
 948         nl_combis = nla_nest_start(msg,
 949                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
 950         if (!nl_combis)
 951                 goto nla_put_failure;
 952
 953         for (i = 0; i < wiphy->n_iface_combinations; i++) {
 954                 const struct ieee80211_iface_combination *c;
 955                 struct nlattr *nl_combi, *nl_limits;
 956
 957                 c = &wiphy->iface_combinations[i];
 958
 959                 nl_combi = nla_nest_start(msg, i + 1);
 960                 if (!nl_combi)
 961                         goto nla_put_failure;
 962
 963                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
 964                 if (!nl_limits)
 965                         goto nla_put_failure;
 966
 967                 for (j = 0; j < c->n_limits; j++) {
 968                         struct nlattr *nl_limit;
 969
 970                         nl_limit = nla_nest_start(msg, j + 1);
 971                         if (!nl_limit)
 972                                 goto nla_put_failure;
 973                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
 974                                         c->limits[j].max))
 975                                 goto nla_put_failure;
 976                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
 977                                                 c->limits[j].types))
 978                                 goto nla_put_failure;
 979                         nla_nest_end(msg, nl_limit);
 980                 }
 981
 982                 nla_nest_end(msg, nl_limits);
 983
 984                 if (c->beacon_int_infra_match &&
 985                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
 986                         goto nla_put_failure;
 987                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
 988                                 c->num_different_channels) ||
 989                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
 990                                 c->max_interfaces))
 991                         goto nla_put_failure;
 992                 if (large &&
 993                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
 994                                 c->radar_detect_widths) ||
 995                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
 996                                 c->radar_detect_regions)))
 997                         goto nla_put_failure;
 998
 999                 nla_nest_end(msg, nl_combi);
1000         }
1001
1002         nla_nest_end(msg, nl_combis);
1003
1004         return 0;
1005 nla_put_failure:
1006         return -ENOBUFS;
1007 }
1008
1009 #ifdef CONFIG_PM
1010 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1011                                         struct sk_buff *msg)
1012 {
1013         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1014         struct nlattr *nl_tcp;
1015
1016         if (!tcp)
1017                 return 0;
1018
1019         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1020         if (!nl_tcp)
1021                 return -ENOBUFS;
1022
1023         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1024                         tcp->data_payload_max))
1025                 return -ENOBUFS;
1026
1027         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1028                         tcp->data_payload_max))
1029                 return -ENOBUFS;
1030
1031         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1032                 return -ENOBUFS;
1033
1034         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1035                                 sizeof(*tcp->tok), tcp->tok))
1036                 return -ENOBUFS;
1037
1038         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1039                         tcp->data_interval_max))
1040                 return -ENOBUFS;
1041
1042         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1043                         tcp->wake_payload_max))
1044                 return -ENOBUFS;
1045
1046         nla_nest_end(msg, nl_tcp);
1047         return 0;
1048 }
1049
1050 static int nl80211_send_wowlan(struct sk_buff *msg,
1051                                struct cfg80211_registered_device *rdev,
1052                                bool large)
1053 {
1054         struct nlattr *nl_wowlan;
1055
1056         if (!rdev->wiphy.wowlan)
1057                 return 0;
1058
1059         nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1060         if (!nl_wowlan)
1061                 return -ENOBUFS;
1062
1063         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1064              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1065             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1066              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1067             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1068              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1069             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1070              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1071             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1072              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1073             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1074              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1075             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1076              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1077             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1078              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1079                 return -ENOBUFS;
1080
1081         if (rdev->wiphy.wowlan->n_patterns) {
1082                 struct nl80211_pattern_support pat = {
1083                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1084                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1085                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1086                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1087                 };
1088
1089                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1090                             sizeof(pat), &pat))
1091                         return -ENOBUFS;
1092         }
1093
1094         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1095             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1096                         rdev->wiphy.wowlan->max_nd_match_sets))
1097                 return -ENOBUFS;
1098
1099         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1100                 return -ENOBUFS;
1101
1102         nla_nest_end(msg, nl_wowlan);
1103
1104         return 0;
1105 }
1106 #endif
1107
1108 static int nl80211_send_coalesce(struct sk_buff *msg,
1109                                  struct cfg80211_registered_device *rdev)
1110 {
1111         struct nl80211_coalesce_rule_support rule;
1112
1113         if (!rdev->wiphy.coalesce)
1114                 return 0;
1115
1116         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1117         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1118         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1119         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1120         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1121         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1122
1123         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1124                 return -ENOBUFS;
1125
1126         return 0;
1127 }
1128
1129 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1130                                       struct ieee80211_supported_band *sband)
1131 {
1132         struct nlattr *nl_rates, *nl_rate;
1133         struct ieee80211_rate *rate;
1134         int i;
1135
1136         /* add HT info */
1137         if (sband->ht_cap.ht_supported &&
1138             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1139                      sizeof(sband->ht_cap.mcs),
1140                      &sband->ht_cap.mcs) ||
1141              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1142                          sband->ht_cap.cap) ||
1143              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1144                         sband->ht_cap.ampdu_factor) ||
1145              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1146                         sband->ht_cap.ampdu_density)))
1147                 return -ENOBUFS;
1148
1149         /* add VHT info */
1150         if (sband->vht_cap.vht_supported &&
1151             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1152                      sizeof(sband->vht_cap.vht_mcs),
1153                      &sband->vht_cap.vht_mcs) ||
1154              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1155                          sband->vht_cap.cap)))
1156                 return -ENOBUFS;
1157
1158         /* add bitrates */
1159         nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1160         if (!nl_rates)
1161                 return -ENOBUFS;
1162
1163         for (i = 0; i < sband->n_bitrates; i++) {
1164                 nl_rate = nla_nest_start(msg, i);
1165                 if (!nl_rate)
1166                         return -ENOBUFS;
1167
1168                 rate = &sband->bitrates[i];
1169                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1170                                 rate->bitrate))
1171                         return -ENOBUFS;
1172                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1173                     nla_put_flag(msg,
1174                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1175                         return -ENOBUFS;
1176
1177                 nla_nest_end(msg, nl_rate);
1178         }
1179
1180         nla_nest_end(msg, nl_rates);
1181
1182         return 0;
1183 }
1184
1185 static int
1186 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1187                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1188 {
1189         u16 stypes;
1190         struct nlattr *nl_ftypes, *nl_ifs;
1191         enum nl80211_iftype ift;
1192         int i;
1193
1194         if (!mgmt_stypes)
1195                 return 0;
1196
1197         nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1198         if (!nl_ifs)
1199                 return -ENOBUFS;
1200
1201         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1202                 nl_ftypes = nla_nest_start(msg, ift);
1203                 if (!nl_ftypes)
1204                         return -ENOBUFS;
1205                 i = 0;
1206                 stypes = mgmt_stypes[ift].tx;
1207                 while (stypes) {
1208                         if ((stypes & 1) &&
1209                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1210                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1211                                 return -ENOBUFS;
1212                         stypes >>= 1;
1213                         i++;
1214                 }
1215                 nla_nest_end(msg, nl_ftypes);
1216         }
1217
1218         nla_nest_end(msg, nl_ifs);
1219
1220         nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1221         if (!nl_ifs)
1222                 return -ENOBUFS;
1223
1224         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1225                 nl_ftypes = nla_nest_start(msg, ift);
1226                 if (!nl_ftypes)
1227                         return -ENOBUFS;
1228                 i = 0;
1229                 stypes = mgmt_stypes[ift].rx;
1230                 while (stypes) {
1231                         if ((stypes & 1) &&
1232                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1233                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1234                                 return -ENOBUFS;
1235                         stypes >>= 1;
1236                         i++;
1237                 }
1238                 nla_nest_end(msg, nl_ftypes);
1239         }
1240         nla_nest_end(msg, nl_ifs);
1241
1242         return 0;
1243 }
1244
1245 struct nl80211_dump_wiphy_state {
1246         s64 filter_wiphy;
1247         long start;
1248         long split_start, band_start, chan_start;
1249         bool split;
1250 };
1251
1252 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1253                               enum nl80211_commands cmd,
1254                               struct sk_buff *msg, u32 portid, u32 seq,
1255                               int flags, struct nl80211_dump_wiphy_state *state)
1256 {
1257         void *hdr;
1258         struct nlattr *nl_bands, *nl_band;
1259         struct nlattr *nl_freqs, *nl_freq;
1260         struct nlattr *nl_cmds;
1261         enum ieee80211_band band;
1262         struct ieee80211_channel *chan;
1263         int i;
1264         const struct ieee80211_txrx_stypes *mgmt_stypes =
1265                                 rdev->wiphy.mgmt_stypes;
1266         u32 features;
1267
1268         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1269         if (!hdr)
1270                 return -ENOBUFS;
1271
1272         if (WARN_ON(!state))
1273                 return -EINVAL;
1274
1275         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1276             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1277                            wiphy_name(&rdev->wiphy)) ||
1278             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1279                         cfg80211_rdev_list_generation))
1280                 goto nla_put_failure;
1281
1282         if (cmd != NL80211_CMD_NEW_WIPHY)
1283                 goto finish;
1284
1285         switch (state->split_start) {
1286         case 0:
1287                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1288                                rdev->wiphy.retry_short) ||
1289                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1290                                rdev->wiphy.retry_long) ||
1291                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1292                                 rdev->wiphy.frag_threshold) ||
1293                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1294                                 rdev->wiphy.rts_threshold) ||
1295                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1296                                rdev->wiphy.coverage_class) ||
1297                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1298                                rdev->wiphy.max_scan_ssids) ||
1299                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1300                                rdev->wiphy.max_sched_scan_ssids) ||
1301                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1302                                 rdev->wiphy.max_scan_ie_len) ||
1303                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1304                                 rdev->wiphy.max_sched_scan_ie_len) ||
1305                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1306                                rdev->wiphy.max_match_sets) ||
1307                     nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1308                                 rdev->wiphy.max_sched_scan_plans) ||
1309                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1310                                 rdev->wiphy.max_sched_scan_plan_interval) ||
1311                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1312                                 rdev->wiphy.max_sched_scan_plan_iterations))
1313                         goto nla_put_failure;
1314
1315                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1316                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1317                         goto nla_put_failure;
1318                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1319                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1320                         goto nla_put_failure;
1321                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1322                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1323                         goto nla_put_failure;
1324                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1325                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1326                         goto nla_put_failure;
1327                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1328                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1329                         goto nla_put_failure;
1330                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1331                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1332                         goto nla_put_failure;
1333                 state->split_start++;
1334                 if (state->split)
1335                         break;
1336         case 1:
1337                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1338                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
1339                             rdev->wiphy.cipher_suites))
1340                         goto nla_put_failure;
1341
1342                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1343                                rdev->wiphy.max_num_pmkids))
1344                         goto nla_put_failure;
1345
1346                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1347                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1348                         goto nla_put_failure;
1349
1350                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1351                                 rdev->wiphy.available_antennas_tx) ||
1352                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1353                                 rdev->wiphy.available_antennas_rx))
1354                         goto nla_put_failure;
1355
1356                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1357                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1358                                 rdev->wiphy.probe_resp_offload))
1359                         goto nla_put_failure;
1360
1361                 if ((rdev->wiphy.available_antennas_tx ||
1362                      rdev->wiphy.available_antennas_rx) &&
1363                     rdev->ops->get_antenna) {
1364                         u32 tx_ant = 0, rx_ant = 0;
1365                         int res;
1366                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1367                         if (!res) {
1368                                 if (nla_put_u32(msg,
1369                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1370                                                 tx_ant) ||
1371                                     nla_put_u32(msg,
1372                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1373                                                 rx_ant))
1374                                         goto nla_put_failure;
1375                         }
1376                 }
1377
1378                 state->split_start++;
1379                 if (state->split)
1380                         break;
1381         case 2:
1382                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1383                                         rdev->wiphy.interface_modes))
1384                                 goto nla_put_failure;
1385                 state->split_start++;
1386                 if (state->split)
1387                         break;
1388         case 3:
1389                 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1390                 if (!nl_bands)
1391                         goto nla_put_failure;
1392
1393                 for (band = state->band_start;
1394                      band < IEEE80211_NUM_BANDS; band++) {
1395                         struct ieee80211_supported_band *sband;
1396
1397                         sband = rdev->wiphy.bands[band];
1398
1399                         if (!sband)
1400                                 continue;
1401
1402                         nl_band = nla_nest_start(msg, band);
1403                         if (!nl_band)
1404                                 goto nla_put_failure;
1405
1406                         switch (state->chan_start) {
1407                         case 0:
1408                                 if (nl80211_send_band_rateinfo(msg, sband))
1409                                         goto nla_put_failure;
1410                                 state->chan_start++;
1411                                 if (state->split)
1412                                         break;
1413                         default:
1414                                 /* add frequencies */
1415                                 nl_freqs = nla_nest_start(
1416                                         msg, NL80211_BAND_ATTR_FREQS);
1417                                 if (!nl_freqs)
1418                                         goto nla_put_failure;
1419
1420                                 for (i = state->chan_start - 1;
1421                                      i < sband->n_channels;
1422                                      i++) {
1423                                         nl_freq = nla_nest_start(msg, i);
1424                                         if (!nl_freq)
1425                                                 goto nla_put_failure;
1426
1427                                         chan = &sband->channels[i];
1428
1429                                         if (nl80211_msg_put_channel(
1430                                                         msg, chan,
1431                                                         state->split))
1432                                                 goto nla_put_failure;
1433
1434                                         nla_nest_end(msg, nl_freq);
1435                                         if (state->split)
1436                                                 break;
1437                                 }
1438                                 if (i < sband->n_channels)
1439                                         state->chan_start = i + 2;
1440                                 else
1441                                         state->chan_start = 0;
1442                                 nla_nest_end(msg, nl_freqs);
1443                         }
1444
1445                         nla_nest_end(msg, nl_band);
1446
1447                         if (state->split) {
1448                                 /* start again here */
1449                                 if (state->chan_start)
1450                                         band--;
1451                                 break;
1452                         }
1453                 }
1454                 nla_nest_end(msg, nl_bands);
1455
1456                 if (band < IEEE80211_NUM_BANDS)
1457                         state->band_start = band + 1;
1458                 else
1459                         state->band_start = 0;
1460
1461                 /* if bands & channels are done, continue outside */
1462                 if (state->band_start == 0 && state->chan_start == 0)
1463                         state->split_start++;
1464                 if (state->split)
1465                         break;
1466         case 4:
1467                 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1468                 if (!nl_cmds)
1469                         goto nla_put_failure;
1470
1471                 i = 0;
1472 #define CMD(op, n)                                                      \
1473                  do {                                                   \
1474                         if (rdev->ops->op) {                            \
1475                                 i++;                                    \
1476                                 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1477                                         goto nla_put_failure;           \
1478                         }                                               \
1479                 } while (0)
1480
1481                 CMD(add_virtual_intf, NEW_INTERFACE);
1482                 CMD(change_virtual_intf, SET_INTERFACE);
1483                 CMD(add_key, NEW_KEY);
1484                 CMD(start_ap, START_AP);
1485                 CMD(add_station, NEW_STATION);
1486                 CMD(add_mpath, NEW_MPATH);
1487                 CMD(update_mesh_config, SET_MESH_CONFIG);
1488                 CMD(change_bss, SET_BSS);
1489                 CMD(auth, AUTHENTICATE);
1490                 CMD(assoc, ASSOCIATE);
1491                 CMD(deauth, DEAUTHENTICATE);
1492                 CMD(disassoc, DISASSOCIATE);
1493                 CMD(join_ibss, JOIN_IBSS);
1494                 CMD(join_mesh, JOIN_MESH);
1495                 CMD(set_pmksa, SET_PMKSA);
1496                 CMD(del_pmksa, DEL_PMKSA);
1497                 CMD(flush_pmksa, FLUSH_PMKSA);
1498                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1499                         CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1500                 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1501                 CMD(mgmt_tx, FRAME);
1502                 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1503                 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1504                         i++;
1505                         if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1506                                 goto nla_put_failure;
1507                 }
1508                 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1509                     rdev->ops->join_mesh) {
1510                         i++;
1511                         if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1512                                 goto nla_put_failure;
1513                 }
1514                 CMD(set_wds_peer, SET_WDS_PEER);
1515                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1516                         CMD(tdls_mgmt, TDLS_MGMT);
1517                         CMD(tdls_oper, TDLS_OPER);
1518                 }
1519                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1520                         CMD(sched_scan_start, START_SCHED_SCAN);
1521                 CMD(probe_client, PROBE_CLIENT);
1522                 CMD(set_noack_map, SET_NOACK_MAP);
1523                 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1524                         i++;
1525                         if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1526                                 goto nla_put_failure;
1527                 }
1528                 CMD(start_p2p_device, START_P2P_DEVICE);
1529                 CMD(set_mcast_rate, SET_MCAST_RATE);
1530 #ifdef CONFIG_NL80211_TESTMODE
1531                 CMD(testmode_cmd, TESTMODE);
1532 #endif
1533                 if (state->split) {
1534                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
1535                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1536                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1537                                 CMD(channel_switch, CHANNEL_SWITCH);
1538                         CMD(set_qos_map, SET_QOS_MAP);
1539                         if (rdev->wiphy.features &
1540                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1541                                 CMD(add_tx_ts, ADD_TX_TS);
1542                 }
1543                 /* add into the if now */
1544 #undef CMD
1545
1546                 if (rdev->ops->connect || rdev->ops->auth) {
1547                         i++;
1548                         if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1549                                 goto nla_put_failure;
1550                 }
1551
1552                 if (rdev->ops->disconnect || rdev->ops->deauth) {
1553                         i++;
1554                         if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1555                                 goto nla_put_failure;
1556                 }
1557
1558                 nla_nest_end(msg, nl_cmds);
1559                 state->split_start++;
1560                 if (state->split)
1561                         break;
1562         case 5:
1563                 if (rdev->ops->remain_on_channel &&
1564                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1565                     nla_put_u32(msg,
1566                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1567                                 rdev->wiphy.max_remain_on_channel_duration))
1568                         goto nla_put_failure;
1569
1570                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1571                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1572                         goto nla_put_failure;
1573
1574                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1575                         goto nla_put_failure;
1576                 state->split_start++;
1577                 if (state->split)
1578                         break;
1579         case 6:
1580 #ifdef CONFIG_PM
1581                 if (nl80211_send_wowlan(msg, rdev, state->split))
1582                         goto nla_put_failure;
1583                 state->split_start++;
1584                 if (state->split)
1585                         break;
1586 #else
1587                 state->split_start++;
1588 #endif
1589         case 7:
1590                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1591                                         rdev->wiphy.software_iftypes))
1592                         goto nla_put_failure;
1593
1594                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1595                                                    state->split))
1596                         goto nla_put_failure;
1597
1598                 state->split_start++;
1599                 if (state->split)
1600                         break;
1601         case 8:
1602                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1603                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1604                                 rdev->wiphy.ap_sme_capa))
1605                         goto nla_put_failure;
1606
1607                 features = rdev->wiphy.features;
1608                 /*
1609                  * We can only add the per-channel limit information if the
1610                  * dump is split, otherwise it makes it too big. Therefore
1611                  * only advertise it in that case.
1612                  */
1613                 if (state->split)
1614                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1615                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1616                         goto nla_put_failure;
1617
1618                 if (rdev->wiphy.ht_capa_mod_mask &&
1619                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1620                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
1621                             rdev->wiphy.ht_capa_mod_mask))
1622                         goto nla_put_failure;
1623
1624                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1625                     rdev->wiphy.max_acl_mac_addrs &&
1626                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1627                                 rdev->wiphy.max_acl_mac_addrs))
1628                         goto nla_put_failure;
1629
1630                 /*
1631                  * Any information below this point is only available to
1632                  * applications that can deal with it being split. This
1633                  * helps ensure that newly added capabilities don't break
1634                  * older tools by overrunning their buffers.
1635                  *
1636                  * We still increment split_start so that in the split
1637                  * case we'll continue with more data in the next round,
1638                  * but break unconditionally so unsplit data stops here.
1639                  */
1640                 state->split_start++;
1641                 break;
1642         case 9:
1643                 if (rdev->wiphy.extended_capabilities &&
1644                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1645                              rdev->wiphy.extended_capabilities_len,
1646                              rdev->wiphy.extended_capabilities) ||
1647                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1648                              rdev->wiphy.extended_capabilities_len,
1649                              rdev->wiphy.extended_capabilities_mask)))
1650                         goto nla_put_failure;
1651
1652                 if (rdev->wiphy.vht_capa_mod_mask &&
1653                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1654                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
1655                             rdev->wiphy.vht_capa_mod_mask))
1656                         goto nla_put_failure;
1657
1658                 state->split_start++;
1659                 break;
1660         case 10:
1661                 if (nl80211_send_coalesce(msg, rdev))
1662                         goto nla_put_failure;
1663
1664                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1665                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1666                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1667                         goto nla_put_failure;
1668
1669                 if (rdev->wiphy.max_ap_assoc_sta &&
1670                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1671                                 rdev->wiphy.max_ap_assoc_sta))
1672                         goto nla_put_failure;
1673
1674                 state->split_start++;
1675                 break;
1676         case 11:
1677                 if (rdev->wiphy.n_vendor_commands) {
1678                         const struct nl80211_vendor_cmd_info *info;
1679                         struct nlattr *nested;
1680
1681                         nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1682                         if (!nested)
1683                                 goto nla_put_failure;
1684
1685                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1686                                 info = &rdev->wiphy.vendor_commands[i].info;
1687                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1688                                         goto nla_put_failure;
1689                         }
1690                         nla_nest_end(msg, nested);
1691                 }
1692
1693                 if (rdev->wiphy.n_vendor_events) {
1694                         const struct nl80211_vendor_cmd_info *info;
1695                         struct nlattr *nested;
1696
1697                         nested = nla_nest_start(msg,
1698                                                 NL80211_ATTR_VENDOR_EVENTS);
1699                         if (!nested)
1700                                 goto nla_put_failure;
1701
1702                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1703                                 info = &rdev->wiphy.vendor_events[i];
1704                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1705                                         goto nla_put_failure;
1706                         }
1707                         nla_nest_end(msg, nested);
1708                 }
1709                 state->split_start++;
1710                 break;
1711         case 12:
1712                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1713                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1714                                rdev->wiphy.max_num_csa_counters))
1715                         goto nla_put_failure;
1716
1717                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1718                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1719                         goto nla_put_failure;
1720
1721                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1722                             sizeof(rdev->wiphy.ext_features),
1723                             rdev->wiphy.ext_features))
1724                         goto nla_put_failure;
1725
1726                 /* done */
1727                 state->split_start = 0;
1728                 break;
1729         }
1730  finish:
1731         genlmsg_end(msg, hdr);
1732         return 0;
1733
1734  nla_put_failure:
1735         genlmsg_cancel(msg, hdr);
1736         return -EMSGSIZE;
1737 }
1738
1739 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1740                                     struct netlink_callback *cb,
1741                                     struct nl80211_dump_wiphy_state *state)
1742 {
1743         struct nlattr **tb = nl80211_fam.attrbuf;
1744         int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1745                               tb, nl80211_fam.maxattr, nl80211_policy);
1746         /* ignore parse errors for backward compatibility */
1747         if (ret)
1748                 return 0;
1749
1750         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1751         if (tb[NL80211_ATTR_WIPHY])
1752                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1753         if (tb[NL80211_ATTR_WDEV])
1754                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1755         if (tb[NL80211_ATTR_IFINDEX]) {
1756                 struct net_device *netdev;
1757                 struct cfg80211_registered_device *rdev;
1758                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1759
1760                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1761                 if (!netdev)
1762                         return -ENODEV;
1763                 if (netdev->ieee80211_ptr) {
1764                         rdev = wiphy_to_rdev(
1765                                 netdev->ieee80211_ptr->wiphy);
1766                         state->filter_wiphy = rdev->wiphy_idx;
1767                 }
1768         }
1769
1770         return 0;
1771 }
1772
1773 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1774 {
1775         int idx = 0, ret;
1776         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1777         struct cfg80211_registered_device *rdev;
1778
1779         rtnl_lock();
1780         if (!state) {
1781                 state = kzalloc(sizeof(*state), GFP_KERNEL);
1782                 if (!state) {
1783                         rtnl_unlock();
1784                         return -ENOMEM;
1785                 }
1786                 state->filter_wiphy = -1;
1787                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1788                 if (ret) {
1789                         kfree(state);
1790                         rtnl_unlock();
1791                         return ret;
1792                 }
1793                 cb->args[0] = (long)state;
1794         }
1795
1796         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1797                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1798                         continue;
1799                 if (++idx <= state->start)
1800                         continue;
1801                 if (state->filter_wiphy != -1 &&
1802                     state->filter_wiphy != rdev->wiphy_idx)
1803                         continue;
1804                 /* attempt to fit multiple wiphy data chunks into the skb */
1805                 do {
1806                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1807                                                  skb,
1808                                                  NETLINK_CB(cb->skb).portid,
1809                                                  cb->nlh->nlmsg_seq,
1810                                                  NLM_F_MULTI, state);
1811                         if (ret < 0) {
1812                                 /*
1813                                  * If sending the wiphy data didn't fit (ENOBUFS
1814                                  * or EMSGSIZE returned), this SKB is still
1815                                  * empty (so it's not too big because another
1816                                  * wiphy dataset is already in the skb) and
1817                                  * we've not tried to adjust the dump allocation
1818                                  * yet ... then adjust the alloc size to be
1819                                  * bigger, and return 1 but with the empty skb.
1820                                  * This results in an empty message being RX'ed
1821                                  * in userspace, but that is ignored.
1822                                  *
1823                                  * We can then retry with the larger buffer.
1824                                  */
1825                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1826                                     !skb->len && !state->split &&
1827                                     cb->min_dump_alloc < 4096) {
1828                                         cb->min_dump_alloc = 4096;
1829                                         state->split_start = 0;
1830                                         rtnl_unlock();
1831                                         return 1;
1832                                 }
1833                                 idx--;
1834                                 break;
1835                         }
1836                 } while (state->split_start > 0);
1837                 break;
1838         }
1839         rtnl_unlock();
1840
1841         state->start = idx;
1842
1843         return skb->len;
1844 }
1845
1846 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1847 {
1848         kfree((void *)cb->args[0]);
1849         return 0;
1850 }
1851
1852 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1853 {
1854         struct sk_buff *msg;
1855         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1856         struct nl80211_dump_wiphy_state state = {};
1857
1858         msg = nlmsg_new(4096, GFP_KERNEL);
1859         if (!msg)
1860                 return -ENOMEM;
1861
1862         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
1863                                info->snd_portid, info->snd_seq, 0,
1864                                &state) < 0) {
1865                 nlmsg_free(msg);
1866                 return -ENOBUFS;
1867         }
1868
1869         return genlmsg_reply(msg, info);
1870 }
1871
1872 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1873         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
1874         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
1875         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
1876         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
1877         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
1878 };
1879
1880 static int parse_txq_params(struct nlattr *tb[],
1881                             struct ieee80211_txq_params *txq_params)
1882 {
1883         u8 ac;
1884
1885         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1886             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1887             !tb[NL80211_TXQ_ATTR_AIFS])
1888                 return -EINVAL;
1889
1890         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1891         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1892         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1893         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1894         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1895
1896         if (ac >= NL80211_NUM_ACS)
1897                 return -EINVAL;
1898         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
1899         return 0;
1900 }
1901
1902 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1903 {
1904         /*
1905          * You can only set the channel explicitly for WDS interfaces,
1906          * all others have their channel managed via their respective
1907          * "establish a connection" command (connect, join, ...)
1908          *
1909          * For AP/GO and mesh mode, the channel can be set with the
1910          * channel userspace API, but is only stored and passed to the
1911          * low-level driver when the AP starts or the mesh is joined.
1912          * This is for backward compatibility, userspace can also give
1913          * the channel in the start-ap or join-mesh commands instead.
1914          *
1915          * Monitors are special as they are normally slaved to
1916          * whatever else is going on, so they have their own special
1917          * operation to set the monitor channel if possible.
1918          */
1919         return !wdev ||
1920                 wdev->iftype == NL80211_IFTYPE_AP ||
1921                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1922                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1923                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1924 }
1925
1926 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1927                                  struct genl_info *info,
1928                                  struct cfg80211_chan_def *chandef)
1929 {
1930         u32 control_freq;
1931
1932         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1933                 return -EINVAL;
1934
1935         control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1936
1937         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1938         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1939         chandef->center_freq1 = control_freq;
1940         chandef->center_freq2 = 0;
1941
1942         /* Primary channel not allowed */
1943         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1944                 return -EINVAL;
1945
1946         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1947                 enum nl80211_channel_type chantype;
1948
1949                 chantype = nla_get_u32(
1950                                 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1951
1952                 switch (chantype) {
1953                 case NL80211_CHAN_NO_HT:
1954                 case NL80211_CHAN_HT20:
1955                 case NL80211_CHAN_HT40PLUS:
1956                 case NL80211_CHAN_HT40MINUS:
1957                         cfg80211_chandef_create(chandef, chandef->chan,
1958                                                 chantype);
1959                         break;
1960                 default:
1961                         return -EINVAL;
1962                 }
1963         } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1964                 chandef->width =
1965                         nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1966                 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1967                         chandef->center_freq1 =
1968                                 nla_get_u32(
1969                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1970                 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1971                         chandef->center_freq2 =
1972                                 nla_get_u32(
1973                                         info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1974         }
1975
1976         if (!cfg80211_chandef_valid(chandef))
1977                 return -EINVAL;
1978
1979         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1980                                      IEEE80211_CHAN_DISABLED))
1981                 return -EINVAL;
1982
1983         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1984              chandef->width == NL80211_CHAN_WIDTH_10) &&
1985             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1986                 return -EINVAL;
1987
1988         return 0;
1989 }
1990
1991 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1992                                  struct net_device *dev,
1993                                  struct genl_info *info)
1994 {
1995         struct cfg80211_chan_def chandef;
1996         int result;
1997         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1998         struct wireless_dev *wdev = NULL;
1999
2000         if (dev)
2001                 wdev = dev->ieee80211_ptr;
2002         if (!nl80211_can_set_dev_channel(wdev))
2003                 return -EOPNOTSUPP;
2004         if (wdev)
2005                 iftype = wdev->iftype;
2006
2007         result = nl80211_parse_chandef(rdev, info, &chandef);
2008         if (result)
2009                 return result;
2010
2011         switch (iftype) {
2012         case NL80211_IFTYPE_AP:
2013         case NL80211_IFTYPE_P2P_GO:
2014                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2015                                                    iftype)) {
2016                         result = -EINVAL;
2017                         break;
2018                 }
2019                 if (wdev->beacon_interval) {
2020                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2021                             !(rdev->wiphy.features &
2022                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2023                                 result = -EBUSY;
2024                                 break;
2025                         }
2026
2027                         /* Only allow dynamic channel width changes */
2028                         if (chandef.chan != wdev->preset_chandef.chan) {
2029                                 result = -EBUSY;
2030                                 break;
2031                         }
2032                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2033                         if (result)
2034                                 break;
2035                 }
2036                 wdev->preset_chandef = chandef;
2037                 result = 0;
2038                 break;
2039         case NL80211_IFTYPE_MESH_POINT:
2040                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2041                 break;
2042         case NL80211_IFTYPE_MONITOR:
2043                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2044                 break;
2045         default:
2046                 result = -EINVAL;
2047         }
2048
2049         return result;
2050 }
2051
2052 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2053 {
2054         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2055         struct net_device *netdev = info->user_ptr[1];
2056
2057         return __nl80211_set_channel(rdev, netdev, info);
2058 }
2059
2060 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2061 {
2062         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2063         struct net_device *dev = info->user_ptr[1];
2064         struct wireless_dev *wdev = dev->ieee80211_ptr;
2065         const u8 *bssid;
2066
2067         if (!info->attrs[NL80211_ATTR_MAC])
2068                 return -EINVAL;
2069
2070         if (netif_running(dev))
2071                 return -EBUSY;
2072
2073         if (!rdev->ops->set_wds_peer)
2074                 return -EOPNOTSUPP;
2075
2076         if (wdev->iftype != NL80211_IFTYPE_WDS)
2077                 return -EOPNOTSUPP;
2078
2079         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2080         return rdev_set_wds_peer(rdev, dev, bssid);
2081 }
2082
2083
2084 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2085 {
2086         struct cfg80211_registered_device *rdev;
2087         struct net_device *netdev = NULL;
2088         struct wireless_dev *wdev;
2089         int result = 0, rem_txq_params = 0;
2090         struct nlattr *nl_txq_params;
2091         u32 changed;
2092         u8 retry_short = 0, retry_long = 0;
2093         u32 frag_threshold = 0, rts_threshold = 0;
2094         u8 coverage_class = 0;
2095
2096         ASSERT_RTNL();
2097
2098         /*
2099          * Try to find the wiphy and netdev. Normally this
2100          * function shouldn't need the netdev, but this is
2101          * done for backward compatibility -- previously
2102          * setting the channel was done per wiphy, but now
2103          * it is per netdev. Previous userland like hostapd
2104          * also passed a netdev to set_wiphy, so that it is
2105          * possible to let that go to the right netdev!
2106          */
2107
2108         if (info->attrs[NL80211_ATTR_IFINDEX]) {
2109                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2110
2111                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2112                 if (netdev && netdev->ieee80211_ptr)
2113                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2114                 else
2115                         netdev = NULL;
2116         }
2117
2118         if (!netdev) {
2119                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2120                                                   info->attrs);
2121                 if (IS_ERR(rdev))
2122                         return PTR_ERR(rdev);
2123                 wdev = NULL;
2124                 netdev = NULL;
2125                 result = 0;
2126         } else
2127                 wdev = netdev->ieee80211_ptr;
2128
2129         /*
2130          * end workaround code, by now the rdev is available
2131          * and locked, and wdev may or may not be NULL.
2132          */
2133
2134         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2135                 result = cfg80211_dev_rename(
2136                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2137
2138         if (result)
2139                 return result;
2140
2141         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2142                 struct ieee80211_txq_params txq_params;
2143                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2144
2145                 if (!rdev->ops->set_txq_params)
2146                         return -EOPNOTSUPP;
2147
2148                 if (!netdev)
2149                         return -EINVAL;
2150
2151                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2152                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2153                         return -EINVAL;
2154
2155                 if (!netif_running(netdev))
2156                         return -ENETDOWN;
2157
2158                 nla_for_each_nested(nl_txq_params,
2159                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2160                                     rem_txq_params) {
2161                         result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2162                                            nla_data(nl_txq_params),
2163                                            nla_len(nl_txq_params),
2164                                            txq_params_policy);
2165                         if (result)
2166                                 return result;
2167                         result = parse_txq_params(tb, &txq_params);
2168                         if (result)
2169                                 return result;
2170
2171                         result = rdev_set_txq_params(rdev, netdev,
2172                                                      &txq_params);
2173                         if (result)
2174                                 return result;
2175                 }
2176         }
2177
2178         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2179                 result = __nl80211_set_channel(
2180                         rdev,
2181                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2182                         info);
2183                 if (result)
2184                         return result;
2185         }
2186
2187         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2188                 struct wireless_dev *txp_wdev = wdev;
2189                 enum nl80211_tx_power_setting type;
2190                 int idx, mbm = 0;
2191
2192                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2193                         txp_wdev = NULL;
2194
2195                 if (!rdev->ops->set_tx_power)
2196                         return -EOPNOTSUPP;
2197
2198                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2199                 type = nla_get_u32(info->attrs[idx]);
2200
2201                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2202                     (type != NL80211_TX_POWER_AUTOMATIC))
2203                         return -EINVAL;
2204
2205                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2206                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2207                         mbm = nla_get_u32(info->attrs[idx]);
2208                 }
2209
2210                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2211                 if (result)
2212                         return result;
2213         }
2214
2215         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2216             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2217                 u32 tx_ant, rx_ant;
2218                 if ((!rdev->wiphy.available_antennas_tx &&
2219                      !rdev->wiphy.available_antennas_rx) ||
2220                     !rdev->ops->set_antenna)
2221                         return -EOPNOTSUPP;
2222
2223                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2224                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2225
2226                 /* reject antenna configurations which don't match the
2227                  * available antenna masks, except for the "all" mask */
2228                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2229                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2230                         return -EINVAL;
2231
2232                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2233                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2234
2235                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2236                 if (result)
2237                         return result;
2238         }
2239
2240         changed = 0;
2241
2242         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2243                 retry_short = nla_get_u8(
2244                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2245                 if (retry_short == 0)
2246                         return -EINVAL;
2247
2248                 changed |= WIPHY_PARAM_RETRY_SHORT;
2249         }
2250
2251         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2252                 retry_long = nla_get_u8(
2253                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2254                 if (retry_long == 0)
2255                         return -EINVAL;
2256
2257                 changed |= WIPHY_PARAM_RETRY_LONG;
2258         }
2259
2260         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2261                 frag_threshold = nla_get_u32(
2262                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2263                 if (frag_threshold < 256)
2264                         return -EINVAL;
2265
2266                 if (frag_threshold != (u32) -1) {
2267                         /*
2268                          * Fragments (apart from the last one) are required to
2269                          * have even length. Make the fragmentation code
2270                          * simpler by stripping LSB should someone try to use
2271                          * odd threshold value.
2272                          */
2273                         frag_threshold &= ~0x1;
2274                 }
2275                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2276         }
2277
2278         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2279                 rts_threshold = nla_get_u32(
2280                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2281                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2282         }
2283
2284         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2285                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2286                         return -EINVAL;
2287
2288                 coverage_class = nla_get_u8(
2289                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2290                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2291         }
2292
2293         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2294                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2295                         return -EOPNOTSUPP;
2296
2297                 changed |= WIPHY_PARAM_DYN_ACK;
2298         }
2299
2300         if (changed) {
2301                 u8 old_retry_short, old_retry_long;
2302                 u32 old_frag_threshold, old_rts_threshold;
2303                 u8 old_coverage_class;
2304
2305                 if (!rdev->ops->set_wiphy_params)
2306                         return -EOPNOTSUPP;
2307
2308                 old_retry_short = rdev->wiphy.retry_short;
2309                 old_retry_long = rdev->wiphy.retry_long;
2310                 old_frag_threshold = rdev->wiphy.frag_threshold;
2311                 old_rts_threshold = rdev->wiphy.rts_threshold;
2312                 old_coverage_class = rdev->wiphy.coverage_class;
2313
2314                 if (changed & WIPHY_PARAM_RETRY_SHORT)
2315                         rdev->wiphy.retry_short = retry_short;
2316                 if (changed & WIPHY_PARAM_RETRY_LONG)
2317                         rdev->wiphy.retry_long = retry_long;
2318                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2319                         rdev->wiphy.frag_threshold = frag_threshold;
2320                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2321                         rdev->wiphy.rts_threshold = rts_threshold;
2322                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2323                         rdev->wiphy.coverage_class = coverage_class;
2324
2325                 result = rdev_set_wiphy_params(rdev, changed);
2326                 if (result) {
2327                         rdev->wiphy.retry_short = old_retry_short;
2328                         rdev->wiphy.retry_long = old_retry_long;
2329                         rdev->wiphy.frag_threshold = old_frag_threshold;
2330                         rdev->wiphy.rts_threshold = old_rts_threshold;
2331                         rdev->wiphy.coverage_class = old_coverage_class;
2332                         return result;
2333                 }
2334         }
2335         return 0;
2336 }
2337
2338 static inline u64 wdev_id(struct wireless_dev *wdev)
2339 {
2340         return (u64)wdev->identifier |
2341                ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2342 }
2343
2344 static int nl80211_send_chandef(struct sk_buff *msg,
2345                                 const struct cfg80211_chan_def *chandef)
2346 {
2347         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2348                 return -EINVAL;
2349
2350         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2351                         chandef->chan->center_freq))
2352                 return -ENOBUFS;
2353         switch (chandef->width) {
2354         case NL80211_CHAN_WIDTH_20_NOHT:
2355         case NL80211_CHAN_WIDTH_20:
2356         case NL80211_CHAN_WIDTH_40:
2357                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2358                                 cfg80211_get_chandef_type(chandef)))
2359                         return -ENOBUFS;
2360                 break;
2361         default:
2362                 break;
2363         }
2364         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2365                 return -ENOBUFS;
2366         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2367                 return -ENOBUFS;
2368         if (chandef->center_freq2 &&
2369             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2370                 return -ENOBUFS;
2371         return 0;
2372 }
2373
2374 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2375                               struct cfg80211_registered_device *rdev,
2376                               struct wireless_dev *wdev, bool removal)
2377 {
2378         struct net_device *dev = wdev->netdev;
2379         u8 cmd = NL80211_CMD_NEW_INTERFACE;
2380         void *hdr;
2381
2382         if (removal)
2383                 cmd = NL80211_CMD_DEL_INTERFACE;
2384
2385         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2386         if (!hdr)
2387                 return -1;
2388
2389         if (dev &&
2390             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2391              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2392                 goto nla_put_failure;
2393
2394         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2395             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2396             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2397             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2398             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2399                         rdev->devlist_generation ^
2400                         (cfg80211_rdev_list_generation << 2)))
2401                 goto nla_put_failure;
2402
2403         if (rdev->ops->get_channel) {
2404                 int ret;
2405                 struct cfg80211_chan_def chandef;
2406
2407                 ret = rdev_get_channel(rdev, wdev, &chandef);
2408                 if (ret == 0) {
2409                         if (nl80211_send_chandef(msg, &chandef))
2410                                 goto nla_put_failure;
2411                 }
2412         }
2413
2414         if (rdev->ops->get_tx_power) {
2415                 int dbm, ret;
2416
2417                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
2418                 if (ret == 0 &&
2419                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
2420                                 DBM_TO_MBM(dbm)))
2421                         goto nla_put_failure;
2422         }
2423
2424         if (wdev->ssid_len) {
2425                 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2426                         goto nla_put_failure;
2427         }
2428
2429         genlmsg_end(msg, hdr);
2430         return 0;
2431
2432  nla_put_failure:
2433         genlmsg_cancel(msg, hdr);
2434         return -EMSGSIZE;
2435 }
2436
2437 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2438 {
2439         int wp_idx = 0;
2440         int if_idx = 0;
2441         int wp_start = cb->args[0];
2442         int if_start = cb->args[1];
2443         struct cfg80211_registered_device *rdev;
2444         struct wireless_dev *wdev;
2445
2446         rtnl_lock();
2447         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2448                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2449                         continue;
2450                 if (wp_idx < wp_start) {
2451                         wp_idx++;
2452                         continue;
2453                 }
2454                 if_idx = 0;
2455
2456                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2457                         if (if_idx < if_start) {
2458                                 if_idx++;
2459                                 continue;
2460                         }
2461                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2462                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
2463                                                rdev, wdev, false) < 0) {
2464                                 goto out;
2465                         }
2466                         if_idx++;
2467                 }
2468
2469                 wp_idx++;
2470         }
2471  out:
2472         rtnl_unlock();
2473
2474         cb->args[0] = wp_idx;
2475         cb->args[1] = if_idx;
2476
2477         return skb->len;
2478 }
2479
2480 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2481 {
2482         struct sk_buff *msg;
2483         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2484         struct wireless_dev *wdev = info->user_ptr[1];
2485
2486         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2487         if (!msg)
2488                 return -ENOMEM;
2489
2490         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2491                                rdev, wdev, false) < 0) {
2492                 nlmsg_free(msg);
2493                 return -ENOBUFS;
2494         }
2495
2496         return genlmsg_reply(msg, info);
2497 }
2498
2499 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2500         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2501         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2502         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2503         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2504         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2505         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2506 };
2507
2508 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2509 {
2510         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2511         int flag;
2512
2513         *mntrflags = 0;
2514
2515         if (!nla)
2516                 return -EINVAL;
2517
2518         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2519                              nla, mntr_flags_policy))
2520                 return -EINVAL;
2521
2522         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2523                 if (flags[flag])
2524                         *mntrflags |= (1<<flag);
2525
2526         return 0;
2527 }
2528
2529 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2530                                struct net_device *netdev, u8 use_4addr,
2531                                enum nl80211_iftype iftype)
2532 {
2533         if (!use_4addr) {
2534                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2535                         return -EBUSY;
2536                 return 0;
2537         }
2538
2539         switch (iftype) {
2540         case NL80211_IFTYPE_AP_VLAN:
2541                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2542                         return 0;
2543                 break;
2544         case NL80211_IFTYPE_STATION:
2545                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2546                         return 0;
2547                 break;
2548         default:
2549                 break;
2550         }
2551
2552         return -EOPNOTSUPP;
2553 }
2554
2555 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2556 {
2557         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2558         struct vif_params params;
2559         int err;
2560         enum nl80211_iftype otype, ntype;
2561         struct net_device *dev = info->user_ptr[1];
2562         u32 _flags, *flags = NULL;
2563         bool change = false;
2564
2565         memset(&params, 0, sizeof(params));
2566
2567         otype = ntype = dev->ieee80211_ptr->iftype;
2568
2569         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2570                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2571                 if (otype != ntype)
2572                         change = true;
2573                 if (ntype > NL80211_IFTYPE_MAX)
2574                         return -EINVAL;
2575         }
2576
2577         if (info->attrs[NL80211_ATTR_MESH_ID]) {
2578                 struct wireless_dev *wdev = dev->ieee80211_ptr;
2579
2580                 if (ntype != NL80211_IFTYPE_MESH_POINT)
2581                         return -EINVAL;
2582                 if (netif_running(dev))
2583                         return -EBUSY;
2584
2585                 wdev_lock(wdev);
2586                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2587                              IEEE80211_MAX_MESH_ID_LEN);
2588                 wdev->mesh_id_up_len =
2589                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2590                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2591                        wdev->mesh_id_up_len);
2592                 wdev_unlock(wdev);
2593         }
2594
2595         if (info->attrs[NL80211_ATTR_4ADDR]) {
2596                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2597                 change = true;
2598                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2599                 if (err)
2600                         return err;
2601         } else {
2602                 params.use_4addr = -1;
2603         }
2604
2605         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2606                 if (ntype != NL80211_IFTYPE_MONITOR)
2607                         return -EINVAL;
2608                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2609                                           &_flags);
2610                 if (err)
2611                         return err;
2612
2613                 flags = &_flags;
2614                 change = true;
2615         }
2616
2617         if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2618             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2619                 return -EOPNOTSUPP;
2620
2621         if (change)
2622                 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2623         else
2624                 err = 0;
2625
2626         if (!err && params.use_4addr != -1)
2627                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2628
2629         return err;
2630 }
2631
2632 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2633 {
2634         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2635         struct vif_params params;
2636         struct wireless_dev *wdev;
2637         struct sk_buff *msg, *event;
2638         int err;
2639         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2640         u32 flags;
2641
2642         /* to avoid failing a new interface creation due to pending removal */
2643         cfg80211_destroy_ifaces(rdev);
2644
2645         memset(&params, 0, sizeof(params));
2646
2647         if (!info->attrs[NL80211_ATTR_IFNAME])
2648                 return -EINVAL;
2649
2650         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2651                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2652                 if (type > NL80211_IFTYPE_MAX)
2653                         return -EINVAL;
2654         }
2655
2656         if (!rdev->ops->add_virtual_intf ||
2657             !(rdev->wiphy.interface_modes & (1 << type)))
2658                 return -EOPNOTSUPP;
2659
2660         if ((type == NL80211_IFTYPE_P2P_DEVICE ||
2661              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2662             info->attrs[NL80211_ATTR_MAC]) {
2663                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2664                            ETH_ALEN);
2665                 if (!is_valid_ether_addr(params.macaddr))
2666                         return -EADDRNOTAVAIL;
2667         }
2668
2669         if (info->attrs[NL80211_ATTR_4ADDR]) {
2670                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2671                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2672                 if (err)
2673                         return err;
2674         }
2675
2676         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2677                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2678                                   &flags);
2679
2680         if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2681             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2682                 return -EOPNOTSUPP;
2683
2684         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2685         if (!msg)
2686                 return -ENOMEM;
2687
2688         wdev = rdev_add_virtual_intf(rdev,
2689                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2690                                 NET_NAME_USER, type, err ? NULL : &flags,
2691                                 &params);
2692         if (WARN_ON(!wdev)) {
2693                 nlmsg_free(msg);
2694                 return -EPROTO;
2695         } else if (IS_ERR(wdev)) {
2696                 nlmsg_free(msg);
2697                 return PTR_ERR(wdev);
2698         }
2699
2700         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2701                 wdev->owner_nlportid = info->snd_portid;
2702
2703         switch (type) {
2704         case NL80211_IFTYPE_MESH_POINT:
2705                 if (!info->attrs[NL80211_ATTR_MESH_ID])
2706                         break;
2707                 wdev_lock(wdev);
2708                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2709                              IEEE80211_MAX_MESH_ID_LEN);
2710                 wdev->mesh_id_up_len =
2711                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2712                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2713                        wdev->mesh_id_up_len);
2714                 wdev_unlock(wdev);
2715                 break;
2716         case NL80211_IFTYPE_P2P_DEVICE:
2717                 /*
2718                  * P2P Device doesn't have a netdev, so doesn't go
2719                  * through the netdev notifier and must be added here
2720                  */
2721                 mutex_init(&wdev->mtx);
2722                 INIT_LIST_HEAD(&wdev->event_list);
2723                 spin_lock_init(&wdev->event_lock);
2724                 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2725                 spin_lock_init(&wdev->mgmt_registrations_lock);
2726
2727                 wdev->identifier = ++rdev->wdev_id;
2728                 list_add_rcu(&wdev->list, &rdev->wdev_list);
2729                 rdev->devlist_generation++;
2730                 break;
2731         default:
2732                 break;
2733         }
2734
2735         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2736                                rdev, wdev, false) < 0) {
2737                 nlmsg_free(msg);
2738                 return -ENOBUFS;
2739         }
2740
2741         event = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2742         if (event) {
2743                 if (nl80211_send_iface(event, 0, 0, 0,
2744                                        rdev, wdev, false) < 0) {
2745                         nlmsg_free(event);
2746                         goto out;
2747                 }
2748
2749                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2750                                         event, 0, NL80211_MCGRP_CONFIG,
2751                                         GFP_KERNEL);
2752         }
2753
2754 out:
2755         return genlmsg_reply(msg, info);
2756 }
2757
2758 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2759 {
2760         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2761         struct wireless_dev *wdev = info->user_ptr[1];
2762         struct sk_buff *msg;
2763         int status;
2764
2765         if (!rdev->ops->del_virtual_intf)
2766                 return -EOPNOTSUPP;
2767
2768         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2769         if (msg && nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, true) < 0) {
2770                 nlmsg_free(msg);
2771                 msg = NULL;
2772         }
2773
2774         /*
2775          * If we remove a wireless device without a netdev then clear
2776          * user_ptr[1] so that nl80211_post_doit won't dereference it
2777          * to check if it needs to do dev_put(). Otherwise it crashes
2778          * since the wdev has been freed, unlike with a netdev where
2779          * we need the dev_put() for the netdev to really be freed.
2780          */
2781         if (!wdev->netdev)
2782                 info->user_ptr[1] = NULL;
2783
2784         status = rdev_del_virtual_intf(rdev, wdev);
2785         if (status >= 0 && msg)
2786                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2787                                         msg, 0, NL80211_MCGRP_CONFIG,
2788                                         GFP_KERNEL);
2789         else
2790                 nlmsg_free(msg);
2791
2792         return status;
2793 }
2794
2795 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2796 {
2797         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2798         struct net_device *dev = info->user_ptr[1];
2799         u16 noack_map;
2800
2801         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2802                 return -EINVAL;
2803
2804         if (!rdev->ops->set_noack_map)
2805                 return -EOPNOTSUPP;
2806
2807         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2808
2809         return rdev_set_noack_map(rdev, dev, noack_map);
2810 }
2811
2812 struct get_key_cookie {
2813         struct sk_buff *msg;
2814         int error;
2815         int idx;
2816 };
2817
2818 static void get_key_callback(void *c, struct key_params *params)
2819 {
2820         struct nlattr *key;
2821         struct get_key_cookie *cookie = c;
2822
2823         if ((params->key &&
2824              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2825                      params->key_len, params->key)) ||
2826             (params->seq &&
2827              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2828                      params->seq_len, params->seq)) ||
2829             (params->cipher &&
2830              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2831                          params->cipher)))
2832                 goto nla_put_failure;
2833
2834         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2835         if (!key)
2836                 goto nla_put_failure;
2837
2838         if ((params->key &&
2839              nla_put(cookie->msg, NL80211_KEY_DATA,
2840                      params->key_len, params->key)) ||
2841             (params->seq &&
2842              nla_put(cookie->msg, NL80211_KEY_SEQ,
2843                      params->seq_len, params->seq)) ||
2844             (params->cipher &&
2845              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2846                          params->cipher)))
2847                 goto nla_put_failure;
2848
2849         if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2850                 goto nla_put_failure;
2851
2852         nla_nest_end(cookie->msg, key);
2853
2854         return;
2855  nla_put_failure:
2856         cookie->error = 1;
2857 }
2858
2859 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2860 {
2861         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2862         int err;
2863         struct net_device *dev = info->user_ptr[1];
2864         u8 key_idx = 0;
2865         const u8 *mac_addr = NULL;
2866         bool pairwise;
2867         struct get_key_cookie cookie = {
2868                 .error = 0,
2869         };
2870         void *hdr;
2871         struct sk_buff *msg;
2872
2873         if (info->attrs[NL80211_ATTR_KEY_IDX])
2874                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2875
2876         if (key_idx > 5)
2877                 return -EINVAL;
2878
2879         if (info->attrs[NL80211_ATTR_MAC])
2880                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2881
2882         pairwise = !!mac_addr;
2883         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2884                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2885                 if (kt >= NUM_NL80211_KEYTYPES)
2886                         return -EINVAL;
2887                 if (kt != NL80211_KEYTYPE_GROUP &&
2888                     kt != NL80211_KEYTYPE_PAIRWISE)
2889                         return -EINVAL;
2890                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2891         }
2892
2893         if (!rdev->ops->get_key)
2894                 return -EOPNOTSUPP;
2895
2896         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2897                 return -ENOENT;
2898
2899         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2900         if (!msg)
2901                 return -ENOMEM;
2902
2903         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2904                              NL80211_CMD_NEW_KEY);
2905         if (!hdr)
2906                 goto nla_put_failure;
2907
2908         cookie.msg = msg;
2909         cookie.idx = key_idx;
2910
2911         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2912             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2913                 goto nla_put_failure;
2914         if (mac_addr &&
2915             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2916                 goto nla_put_failure;
2917
2918         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2919                            get_key_callback);
2920
2921         if (err)
2922                 goto free_msg;
2923
2924         if (cookie.error)
2925                 goto nla_put_failure;
2926
2927         genlmsg_end(msg, hdr);
2928         return genlmsg_reply(msg, info);
2929
2930  nla_put_failure:
2931         err = -ENOBUFS;
2932  free_msg:
2933         nlmsg_free(msg);
2934         return err;
2935 }
2936
2937 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2938 {
2939         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2940         struct key_parse key;
2941         int err;
2942         struct net_device *dev = info->user_ptr[1];
2943
2944         err = nl80211_parse_key(info, &key);
2945         if (err)
2946                 return err;
2947
2948         if (key.idx < 0)
2949                 return -EINVAL;
2950
2951         /* only support setting default key */
2952         if (!key.def && !key.defmgmt)
2953                 return -EINVAL;
2954
2955         wdev_lock(dev->ieee80211_ptr);
2956
2957         if (key.def) {
2958                 if (!rdev->ops->set_default_key) {
2959                         err = -EOPNOTSUPP;
2960                         goto out;
2961                 }
2962
2963                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2964                 if (err)
2965                         goto out;
2966
2967                 err = rdev_set_default_key(rdev, dev, key.idx,
2968                                                  key.def_uni, key.def_multi);
2969
2970                 if (err)
2971                         goto out;
2972
2973 #ifdef CONFIG_CFG80211_WEXT
2974                 dev->ieee80211_ptr->wext.default_key = key.idx;
2975 #endif
2976         } else {
2977                 if (key.def_uni || !key.def_multi) {
2978                         err = -EINVAL;
2979                         goto out;
2980                 }
2981
2982                 if (!rdev->ops->set_default_mgmt_key) {
2983                         err = -EOPNOTSUPP;
2984                         goto out;
2985                 }
2986
2987                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2988                 if (err)
2989                         goto out;
2990
2991                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2992                 if (err)
2993                         goto out;
2994
2995 #ifdef CONFIG_CFG80211_WEXT
2996                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2997 #endif
2998         }
2999
3000  out:
3001         wdev_unlock(dev->ieee80211_ptr);
3002
3003         return err;
3004 }
3005
3006 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3007 {
3008         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3009         int err;
3010         struct net_device *dev = info->user_ptr[1];
3011         struct key_parse key;
3012         const u8 *mac_addr = NULL;
3013
3014         err = nl80211_parse_key(info, &key);
3015         if (err)
3016                 return err;
3017
3018         if (!key.p.key)
3019                 return -EINVAL;
3020
3021         if (info->attrs[NL80211_ATTR_MAC])
3022                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3023
3024         if (key.type == -1) {
3025                 if (mac_addr)
3026                         key.type = NL80211_KEYTYPE_PAIRWISE;
3027                 else
3028                         key.type = NL80211_KEYTYPE_GROUP;
3029         }
3030
3031         /* for now */
3032         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3033             key.type != NL80211_KEYTYPE_GROUP)
3034                 return -EINVAL;
3035
3036         if (!rdev->ops->add_key)
3037                 return -EOPNOTSUPP;
3038
3039         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3040                                            key.type == NL80211_KEYTYPE_PAIRWISE,
3041                                            mac_addr))
3042                 return -EINVAL;
3043
3044         wdev_lock(dev->ieee80211_ptr);
3045         err = nl80211_key_allowed(dev->ieee80211_ptr);
3046         if (!err)
3047                 err = rdev_add_key(rdev, dev, key.idx,
3048                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3049                                     mac_addr, &key.p);
3050         wdev_unlock(dev->ieee80211_ptr);
3051
3052         return err;
3053 }
3054
3055 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3056 {
3057         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3058         int err;
3059         struct net_device *dev = info->user_ptr[1];
3060         u8 *mac_addr = NULL;
3061         struct key_parse key;
3062
3063         err = nl80211_parse_key(info, &key);
3064         if (err)
3065                 return err;
3066
3067         if (info->attrs[NL80211_ATTR_MAC])
3068                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3069
3070         if (key.type == -1) {
3071                 if (mac_addr)
3072                         key.type = NL80211_KEYTYPE_PAIRWISE;
3073                 else
3074                         key.type = NL80211_KEYTYPE_GROUP;
3075         }
3076
3077         /* for now */
3078         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3079             key.type != NL80211_KEYTYPE_GROUP)
3080                 return -EINVAL;
3081
3082         if (!rdev->ops->del_key)
3083                 return -EOPNOTSUPP;
3084
3085         wdev_lock(dev->ieee80211_ptr);
3086         err = nl80211_key_allowed(dev->ieee80211_ptr);
3087
3088         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3089             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3090                 err = -ENOENT;
3091
3092         if (!err)
3093                 err = rdev_del_key(rdev, dev, key.idx,
3094                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3095                                    mac_addr);
3096
3097 #ifdef CONFIG_CFG80211_WEXT
3098         if (!err) {
3099                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3100                         dev->ieee80211_ptr->wext.default_key = -1;
3101                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3102                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3103         }
3104 #endif
3105         wdev_unlock(dev->ieee80211_ptr);
3106
3107         return err;
3108 }
3109
3110 /* This function returns an error or the number of nested attributes */
3111 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3112 {
3113         struct nlattr *attr;
3114         int n_entries = 0, tmp;
3115
3116         nla_for_each_nested(attr, nl_attr, tmp) {
3117                 if (nla_len(attr) != ETH_ALEN)
3118                         return -EINVAL;
3119
3120                 n_entries++;
3121         }
3122
3123         return n_entries;
3124 }
3125
3126 /*
3127  * This function parses ACL information and allocates memory for ACL data.
3128  * On successful return, the calling function is responsible to free the
3129  * ACL buffer returned by this function.
3130  */
3131 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3132                                                 struct genl_info *info)
3133 {
3134         enum nl80211_acl_policy acl_policy;
3135         struct nlattr *attr;
3136         struct cfg80211_acl_data *acl;
3137         int i = 0, n_entries, tmp;
3138
3139         if (!wiphy->max_acl_mac_addrs)
3140                 return ERR_PTR(-EOPNOTSUPP);
3141
3142         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3143                 return ERR_PTR(-EINVAL);
3144
3145         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3146         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3147             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3148                 return ERR_PTR(-EINVAL);
3149
3150         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3151                 return ERR_PTR(-EINVAL);
3152
3153         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3154         if (n_entries < 0)
3155                 return ERR_PTR(n_entries);
3156
3157         if (n_entries > wiphy->max_acl_mac_addrs)
3158                 return ERR_PTR(-ENOTSUPP);
3159
3160         acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3161                       GFP_KERNEL);
3162         if (!acl)
3163                 return ERR_PTR(-ENOMEM);
3164
3165         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3166                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3167                 i++;
3168         }
3169
3170         acl->n_acl_entries = n_entries;
3171         acl->acl_policy = acl_policy;
3172
3173         return acl;
3174 }
3175
3176 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3177 {
3178         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3179         struct net_device *dev = info->user_ptr[1];
3180         struct cfg80211_acl_data *acl;
3181         int err;
3182
3183         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3184             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3185                 return -EOPNOTSUPP;
3186
3187         if (!dev->ieee80211_ptr->beacon_interval)
3188                 return -EINVAL;
3189
3190         acl = parse_acl_data(&rdev->wiphy, info);
3191         if (IS_ERR(acl))
3192                 return PTR_ERR(acl);
3193
3194         err = rdev_set_mac_acl(rdev, dev, acl);
3195
3196         kfree(acl);
3197
3198         return err;
3199 }
3200
3201 static int nl80211_parse_beacon(struct nlattr *attrs[],
3202                                 struct cfg80211_beacon_data *bcn)
3203 {
3204         bool haveinfo = false;
3205
3206         if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3207             !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3208             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3209             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3210                 return -EINVAL;
3211
3212         memset(bcn, 0, sizeof(*bcn));
3213
3214         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3215                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3216                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3217                 if (!bcn->head_len)
3218                         return -EINVAL;
3219                 haveinfo = true;
3220         }
3221
3222         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3223                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3224                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3225                 haveinfo = true;
3226         }
3227
3228         if (!haveinfo)
3229                 return -EINVAL;
3230
3231         if (attrs[NL80211_ATTR_IE]) {
3232                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3233                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3234         }
3235
3236         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3237                 bcn->proberesp_ies =
3238                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3239                 bcn->proberesp_ies_len =
3240                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3241         }
3242
3243         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3244                 bcn->assocresp_ies =
3245                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3246                 bcn->assocresp_ies_len =
3247                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3248         }
3249
3250         if (attrs[NL80211_ATTR_PROBE_RESP]) {
3251                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3252                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3253         }
3254
3255         return 0;
3256 }
3257
3258 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3259                                    struct cfg80211_ap_settings *params)
3260 {
3261         struct wireless_dev *wdev;
3262         bool ret = false;
3263
3264         list_for_each_entry(wdev, &rdev->wdev_list, list) {
3265                 if (wdev->iftype != NL80211_IFTYPE_AP &&
3266                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
3267                         continue;
3268
3269                 if (!wdev->preset_chandef.chan)
3270                         continue;
3271
3272                 params->chandef = wdev->preset_chandef;
3273                 ret = true;
3274                 break;
3275         }
3276
3277         return ret;
3278 }
3279
3280 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3281                                     enum nl80211_auth_type auth_type,
3282                                     enum nl80211_commands cmd)
3283 {
3284         if (auth_type > NL80211_AUTHTYPE_MAX)
3285                 return false;
3286
3287         switch (cmd) {
3288         case NL80211_CMD_AUTHENTICATE:
3289                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3290                     auth_type == NL80211_AUTHTYPE_SAE)
3291                         return false;
3292                 return true;
3293         case NL80211_CMD_CONNECT:
3294         case NL80211_CMD_START_AP:
3295                 /* SAE not supported yet */
3296                 if (auth_type == NL80211_AUTHTYPE_SAE)
3297                         return false;
3298                 return true;
3299         default:
3300                 return false;
3301         }
3302 }
3303
3304 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3305 {
3306         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3307         struct net_device *dev = info->user_ptr[1];
3308         struct wireless_dev *wdev = dev->ieee80211_ptr;
3309         struct cfg80211_ap_settings params;
3310         int err;
3311
3312         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3313             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3314                 return -EOPNOTSUPP;
3315
3316         if (!rdev->ops->start_ap)
3317                 return -EOPNOTSUPP;
3318
3319         if (wdev->beacon_interval)
3320                 return -EALREADY;
3321
3322         memset(&params, 0, sizeof(params));
3323
3324         /* these are required for START_AP */
3325         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3326             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3327             !info->attrs[NL80211_ATTR_BEACON_HEAD])
3328                 return -EINVAL;
3329
3330         err = nl80211_parse_beacon(info->attrs, &params.beacon);
3331         if (err)
3332                 return err;
3333
3334         params.beacon_interval =
3335                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3336         params.dtim_period =
3337                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3338
3339         err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3340         if (err)
3341                 return err;
3342
3343         /*
3344          * In theory, some of these attributes should be required here
3345          * but since they were not used when the command was originally
3346          * added, keep them optional for old user space programs to let
3347          * them continue to work with drivers that do not need the
3348          * additional information -- drivers must check!
3349          */
3350         if (info->attrs[NL80211_ATTR_SSID]) {
3351                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3352                 params.ssid_len =
3353                         nla_len(info->attrs[NL80211_ATTR_SSID]);
3354                 if (params.ssid_len == 0 ||
3355                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
3356                         return -EINVAL;
3357         }
3358
3359         if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3360                 params.hidden_ssid = nla_get_u32(
3361                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3362                 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3363                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3364                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3365                         return -EINVAL;
3366         }
3367
3368         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3369
3370         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3371                 params.auth_type = nla_get_u32(
3372                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
3373                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3374                                              NL80211_CMD_START_AP))
3375                         return -EINVAL;
3376         } else
3377                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3378
3379         err = nl80211_crypto_settings(rdev, info, &params.crypto,
3380                                       NL80211_MAX_NR_CIPHER_SUITES);
3381         if (err)
3382                 return err;
3383
3384         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3385                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3386                         return -EOPNOTSUPP;
3387                 params.inactivity_timeout = nla_get_u16(
3388                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3389         }
3390
3391         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3392                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3393                         return -EINVAL;
3394                 params.p2p_ctwindow =
3395                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3396                 if (params.p2p_ctwindow > 127)
3397                         return -EINVAL;
3398                 if (params.p2p_ctwindow != 0 &&
3399                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3400                         return -EINVAL;
3401         }
3402
3403         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3404                 u8 tmp;
3405
3406                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3407                         return -EINVAL;
3408                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3409                 if (tmp > 1)
3410                         return -EINVAL;
3411                 params.p2p_opp_ps = tmp;
3412                 if (params.p2p_opp_ps != 0 &&
3413                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3414                         return -EINVAL;
3415         }
3416
3417         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3418                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3419                 if (err)
3420                         return err;
3421         } else if (wdev->preset_chandef.chan) {
3422                 params.chandef = wdev->preset_chandef;
3423         } else if (!nl80211_get_ap_channel(rdev, &params))
3424                 return -EINVAL;
3425
3426         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
3427                                            wdev->iftype))
3428                 return -EINVAL;
3429
3430         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3431                 params.smps_mode =
3432                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3433                 switch (params.smps_mode) {
3434                 case NL80211_SMPS_OFF:
3435                         break;
3436                 case NL80211_SMPS_STATIC:
3437                         if (!(rdev->wiphy.features &
3438                               NL80211_FEATURE_STATIC_SMPS))
3439                                 return -EINVAL;
3440                         break;
3441                 case NL80211_SMPS_DYNAMIC:
3442                         if (!(rdev->wiphy.features &
3443                               NL80211_FEATURE_DYNAMIC_SMPS))
3444                                 return -EINVAL;
3445                         break;
3446                 default:
3447                         return -EINVAL;
3448                 }
3449         } else {
3450                 params.smps_mode = NL80211_SMPS_OFF;
3451         }
3452
3453         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3454                 params.acl = parse_acl_data(&rdev->wiphy, info);
3455                 if (IS_ERR(params.acl))
3456                         return PTR_ERR(params.acl);
3457         }
3458
3459         wdev_lock(wdev);
3460         err = rdev_start_ap(rdev, dev, &params);
3461         if (!err) {
3462                 wdev->preset_chandef = params.chandef;
3463                 wdev->beacon_interval = params.beacon_interval;
3464                 wdev->chandef = params.chandef;
3465                 wdev->ssid_len = params.ssid_len;
3466                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3467         }
3468         wdev_unlock(wdev);
3469
3470         kfree(params.acl);
3471
3472         return err;
3473 }
3474
3475 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3476 {
3477         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3478         struct net_device *dev = info->user_ptr[1];
3479         struct wireless_dev *wdev = dev->ieee80211_ptr;
3480         struct cfg80211_beacon_data params;
3481         int err;
3482
3483         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3484             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3485                 return -EOPNOTSUPP;
3486
3487         if (!rdev->ops->change_beacon)
3488                 return -EOPNOTSUPP;
3489
3490         if (!wdev->beacon_interval)
3491                 return -EINVAL;
3492
3493         err = nl80211_parse_beacon(info->attrs, &params);
3494         if (err)
3495                 return err;
3496
3497         wdev_lock(wdev);
3498         err = rdev_change_beacon(rdev, dev, &params);
3499         wdev_unlock(wdev);
3500
3501         return err;
3502 }
3503
3504 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3505 {
3506         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3507         struct net_device *dev = info->user_ptr[1];
3508
3509         return cfg80211_stop_ap(rdev, dev, false);
3510 }
3511
3512 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3513         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3514         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3515         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3516         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3517         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3518         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3519 };
3520
3521 static int parse_station_flags(struct genl_info *info,
3522                                enum nl80211_iftype iftype,
3523                                struct station_parameters *params)
3524 {
3525         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3526         struct nlattr *nla;
3527         int flag;
3528
3529         /*
3530          * Try parsing the new attribute first so userspace
3531          * can specify both for older kernels.
3532          */
3533         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3534         if (nla) {
3535                 struct nl80211_sta_flag_update *sta_flags;
3536
3537                 sta_flags = nla_data(nla);
3538                 params->sta_flags_mask = sta_flags->mask;
3539                 params->sta_flags_set = sta_flags->set;
3540                 params->sta_flags_set &= params->sta_flags_mask;
3541                 if ((params->sta_flags_mask |
3542                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3543                         return -EINVAL;
3544                 return 0;
3545         }
3546
3547         /* if present, parse the old attribute */
3548
3549         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3550         if (!nla)
3551                 return 0;
3552
3553         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3554                              nla, sta_flags_policy))
3555                 return -EINVAL;
3556
3557         /*
3558          * Only allow certain flags for interface types so that
3559          * other attributes are silently ignored. Remember that
3560          * this is backward compatibility code with old userspace
3561          * and shouldn't be hit in other cases anyway.
3562          */
3563         switch (iftype) {
3564         case NL80211_IFTYPE_AP:
3565         case NL80211_IFTYPE_AP_VLAN:
3566         case NL80211_IFTYPE_P2P_GO:
3567                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3568                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3569                                          BIT(NL80211_STA_FLAG_WME) |
3570                                          BIT(NL80211_STA_FLAG_MFP);
3571                 break;
3572         case NL80211_IFTYPE_P2P_CLIENT:
3573         case NL80211_IFTYPE_STATION:
3574                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3575                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
3576                 break;
3577         case NL80211_IFTYPE_MESH_POINT:
3578                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3579                                          BIT(NL80211_STA_FLAG_MFP) |
3580                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
3581                 break;
3582         default:
3583                 return -EINVAL;
3584         }
3585
3586         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3587                 if (flags[flag]) {
3588                         params->sta_flags_set |= (1<<flag);
3589
3590                         /* no longer support new API additions in old API */
3591                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3592                                 return -EINVAL;
3593                 }
3594         }
3595
3596         return 0;
3597 }
3598
3599 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3600                                  int attr)
3601 {
3602         struct nlattr *rate;
3603         u32 bitrate;
3604         u16 bitrate_compat;
3605         enum nl80211_rate_info rate_flg;
3606
3607         rate = nla_nest_start(msg, attr);
3608         if (!rate)
3609                 return false;
3610
3611         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3612         bitrate = cfg80211_calculate_bitrate(info);
3613         /* report 16-bit bitrate only if we can */
3614         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3615         if (bitrate > 0 &&
3616             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3617                 return false;
3618         if (bitrate_compat > 0 &&
3619             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3620                 return false;
3621
3622         switch (info->bw) {
3623         case RATE_INFO_BW_5:
3624                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
3625                 break;
3626         case RATE_INFO_BW_10:
3627                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
3628                 break;
3629         default:
3630                 WARN_ON(1);
3631                 /* fall through */
3632         case RATE_INFO_BW_20:
3633                 rate_flg = 0;
3634                 break;
3635         case RATE_INFO_BW_40:
3636                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
3637                 break;
3638         case RATE_INFO_BW_80:
3639                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
3640                 break;
3641         case RATE_INFO_BW_160:
3642                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
3643                 break;
3644         }
3645
3646         if (rate_flg && nla_put_flag(msg, rate_flg))
3647                 return false;
3648
3649         if (info->flags & RATE_INFO_FLAGS_MCS) {
3650                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3651                         return false;
3652                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3653                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3654                         return false;
3655         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3656                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3657                         return false;
3658                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3659                         return false;
3660                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3661                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3662                         return false;
3663         }
3664
3665         nla_nest_end(msg, rate);
3666         return true;
3667 }
3668
3669 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3670                                int id)
3671 {
3672         void *attr;
3673         int i = 0;
3674
3675         if (!mask)
3676                 return true;
3677
3678         attr = nla_nest_start(msg, id);
3679         if (!attr)
3680                 return false;
3681
3682         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3683                 if (!(mask & BIT(i)))
3684                         continue;
3685
3686                 if (nla_put_u8(msg, i, signal[i]))
3687                         return false;
3688         }
3689
3690         nla_nest_end(msg, attr);
3691
3692         return true;
3693 }
3694
3695 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
3696                                 u32 seq, int flags,
3697                                 struct cfg80211_registered_device *rdev,
3698                                 struct net_device *dev,
3699                                 const u8 *mac_addr, struct station_info *sinfo)
3700 {
3701         void *hdr;
3702         struct nlattr *sinfoattr, *bss_param;
3703
3704         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3705         if (!hdr)
3706                 return -1;
3707
3708         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3709             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3710             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3711                 goto nla_put_failure;
3712
3713         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3714         if (!sinfoattr)
3715                 goto nla_put_failure;
3716
3717 #define PUT_SINFO(attr, memb, type) do {                                \
3718         if (sinfo->filled & BIT(NL80211_STA_INFO_ ## attr) &&           \
3719             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
3720                              sinfo->memb))                              \
3721                 goto nla_put_failure;                                   \
3722         } while (0)
3723
3724         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
3725         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
3726
3727         if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
3728                              BIT(NL80211_STA_INFO_RX_BYTES64)) &&
3729             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3730                         (u32)sinfo->rx_bytes))
3731                 goto nla_put_failure;
3732
3733         if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
3734                              BIT(NL80211_STA_INFO_TX_BYTES64)) &&
3735             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3736                         (u32)sinfo->tx_bytes))
3737                 goto nla_put_failure;
3738
3739         PUT_SINFO(RX_BYTES64, rx_bytes, u64);
3740         PUT_SINFO(TX_BYTES64, tx_bytes, u64);
3741         PUT_SINFO(LLID, llid, u16);
3742         PUT_SINFO(PLID, plid, u16);
3743         PUT_SINFO(PLINK_STATE, plink_state, u8);
3744
3745         switch (rdev->wiphy.signal_type) {
3746         case CFG80211_SIGNAL_TYPE_MBM:
3747                 PUT_SINFO(SIGNAL, signal, u8);
3748                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
3749                 break;
3750         default:
3751                 break;
3752         }
3753         if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
3754                 if (!nl80211_put_signal(msg, sinfo->chains,
3755                                         sinfo->chain_signal,
3756                                         NL80211_STA_INFO_CHAIN_SIGNAL))
3757                         goto nla_put_failure;
3758         }
3759         if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
3760                 if (!nl80211_put_signal(msg, sinfo->chains,
3761                                         sinfo->chain_signal_avg,
3762                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3763                         goto nla_put_failure;
3764         }
3765         if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
3766                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3767                                           NL80211_STA_INFO_TX_BITRATE))
3768                         goto nla_put_failure;
3769         }
3770         if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
3771                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3772                                           NL80211_STA_INFO_RX_BITRATE))
3773                         goto nla_put_failure;
3774         }
3775
3776         PUT_SINFO(RX_PACKETS, rx_packets, u32);
3777         PUT_SINFO(TX_PACKETS, tx_packets, u32);
3778         PUT_SINFO(TX_RETRIES, tx_retries, u32);
3779         PUT_SINFO(TX_FAILED, tx_failed, u32);
3780         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
3781         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
3782         PUT_SINFO(LOCAL_PM, local_pm, u32);
3783         PUT_SINFO(PEER_PM, peer_pm, u32);
3784         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
3785
3786         if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
3787                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3788                 if (!bss_param)
3789                         goto nla_put_failure;
3790
3791                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3792                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3793                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3794                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3795                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3796                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3797                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3798                                sinfo->bss_param.dtim_period) ||
3799                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3800                                 sinfo->bss_param.beacon_interval))
3801                         goto nla_put_failure;
3802
3803                 nla_nest_end(msg, bss_param);
3804         }
3805         if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
3806             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3807                     sizeof(struct nl80211_sta_flag_update),
3808                     &sinfo->sta_flags))
3809                 goto nla_put_failure;
3810
3811         PUT_SINFO(T_OFFSET, t_offset, u64);
3812         PUT_SINFO(RX_DROP_MISC, rx_dropped_misc, u64);
3813         PUT_SINFO(BEACON_RX, rx_beacon, u64);
3814         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
3815
3816 #undef PUT_SINFO
3817
3818         if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
3819                 struct nlattr *tidsattr;
3820                 int tid;
3821
3822                 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
3823                 if (!tidsattr)
3824                         goto nla_put_failure;
3825
3826                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
3827                         struct cfg80211_tid_stats *tidstats;
3828                         struct nlattr *tidattr;
3829
3830                         tidstats = &sinfo->pertid[tid];
3831
3832                         if (!tidstats->filled)
3833                                 continue;
3834
3835                         tidattr = nla_nest_start(msg, tid + 1);
3836                         if (!tidattr)
3837                                 goto nla_put_failure;
3838
3839 #define PUT_TIDVAL(attr, memb, type) do {                               \
3840         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
3841             nla_put_ ## type(msg, NL80211_TID_STATS_ ## attr,           \
3842                              tidstats->memb))                           \
3843                 goto nla_put_failure;                                   \
3844         } while (0)
3845
3846                         PUT_TIDVAL(RX_MSDU, rx_msdu, u64);
3847                         PUT_TIDVAL(TX_MSDU, tx_msdu, u64);
3848                         PUT_TIDVAL(TX_MSDU_RETRIES, tx_msdu_retries, u64);
3849                         PUT_TIDVAL(TX_MSDU_FAILED, tx_msdu_failed, u64);
3850
3851 #undef PUT_TIDVAL
3852                         nla_nest_end(msg, tidattr);
3853                 }
3854
3855                 nla_nest_end(msg, tidsattr);
3856         }
3857
3858         nla_nest_end(msg, sinfoattr);
3859
3860         if (sinfo->assoc_req_ies_len &&
3861             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3862                     sinfo->assoc_req_ies))
3863                 goto nla_put_failure;
3864
3865         genlmsg_end(msg, hdr);
3866         return 0;
3867
3868  nla_put_failure:
3869         genlmsg_cancel(msg, hdr);
3870         return -EMSGSIZE;
3871 }
3872
3873 static int nl80211_dump_station(struct sk_buff *skb,
3874                                 struct netlink_callback *cb)
3875 {
3876         struct station_info sinfo;
3877         struct cfg80211_registered_device *rdev;
3878         struct wireless_dev *wdev;
3879         u8 mac_addr[ETH_ALEN];
3880         int sta_idx = cb->args[2];
3881         int err;
3882
3883         rtnl_lock();
3884         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
3885         if (err)
3886                 goto out_err;
3887
3888         if (!wdev->netdev) {
3889                 err = -EINVAL;
3890                 goto out_err;
3891         }
3892
3893         if (!rdev->ops->dump_station) {
3894                 err = -EOPNOTSUPP;
3895                 goto out_err;
3896         }
3897
3898         while (1) {
3899                 memset(&sinfo, 0, sizeof(sinfo));
3900                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
3901                                         mac_addr, &sinfo);
3902                 if (err == -ENOENT)
3903                         break;
3904                 if (err)
3905                         goto out_err;
3906
3907                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
3908                                 NETLINK_CB(cb->skb).portid,
3909                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3910                                 rdev, wdev->netdev, mac_addr,
3911                                 &sinfo) < 0)
3912                         goto out;
3913
3914                 sta_idx++;
3915         }
3916
3917
3918  out:
3919         cb->args[2] = sta_idx;
3920         err = skb->len;
3921  out_err:
3922         rtnl_unlock();
3923
3924         return err;
3925 }
3926
3927 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3928 {
3929         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3930         struct net_device *dev = info->user_ptr[1];
3931         struct station_info sinfo;
3932         struct sk_buff *msg;
3933         u8 *mac_addr = NULL;
3934         int err;
3935
3936         memset(&sinfo, 0, sizeof(sinfo));
3937
3938         if (!info->attrs[NL80211_ATTR_MAC])
3939                 return -EINVAL;
3940
3941         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3942
3943         if (!rdev->ops->get_station)
3944                 return -EOPNOTSUPP;
3945
3946         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3947         if (err)
3948                 return err;
3949
3950         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3951         if (!msg)
3952                 return -ENOMEM;
3953
3954         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
3955                                  info->snd_portid, info->snd_seq, 0,
3956                                  rdev, dev, mac_addr, &sinfo) < 0) {
3957                 nlmsg_free(msg);
3958                 return -ENOBUFS;
3959         }
3960
3961         return genlmsg_reply(msg, info);
3962 }
3963
3964 int cfg80211_check_station_change(struct wiphy *wiphy,
3965                                   struct station_parameters *params,
3966                                   enum cfg80211_station_type statype)
3967 {
3968         if (params->listen_interval != -1 &&
3969             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
3970                 return -EINVAL;
3971
3972         if (params->aid &&
3973             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
3974             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
3975                 return -EINVAL;
3976
3977         /* When you run into this, adjust the code below for the new flag */
3978         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3979
3980         switch (statype) {
3981         case CFG80211_STA_MESH_PEER_KERNEL:
3982         case CFG80211_STA_MESH_PEER_USER:
3983                 /*
3984                  * No ignoring the TDLS flag here -- the userspace mesh
3985                  * code doesn't have the bug of including TDLS in the
3986                  * mask everywhere.
3987                  */
3988                 if (params->sta_flags_mask &
3989                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3990                                   BIT(NL80211_STA_FLAG_MFP) |
3991                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
3992                         return -EINVAL;
3993                 break;
3994         case CFG80211_STA_TDLS_PEER_SETUP:
3995         case CFG80211_STA_TDLS_PEER_ACTIVE:
3996                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3997                         return -EINVAL;
3998                 /* ignore since it can't change */
3999                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4000                 break;
4001         default:
4002                 /* disallow mesh-specific things */
4003                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4004                         return -EINVAL;
4005                 if (params->local_pm)
4006                         return -EINVAL;
4007                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4008                         return -EINVAL;
4009         }
4010
4011         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4012             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
4013                 /* TDLS can't be set, ... */
4014                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4015                         return -EINVAL;
4016                 /*
4017                  * ... but don't bother the driver with it. This works around
4018                  * a hostapd/wpa_supplicant issue -- it always includes the
4019                  * TLDS_PEER flag in the mask even for AP mode.
4020                  */
4021                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4022         }
4023
4024         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4025             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4026                 /* reject other things that can't change */
4027                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4028                         return -EINVAL;
4029                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4030                         return -EINVAL;
4031                 if (params->supported_rates)
4032                         return -EINVAL;
4033                 if (params->ext_capab || params->ht_capa || params->vht_capa)
4034                         return -EINVAL;
4035         }
4036
4037         if (statype != CFG80211_STA_AP_CLIENT &&
4038             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4039                 if (params->vlan)
4040                         return -EINVAL;
4041         }
4042
4043         switch (statype) {
4044         case CFG80211_STA_AP_MLME_CLIENT:
4045                 /* Use this only for authorizing/unauthorizing a station */
4046                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4047                         return -EOPNOTSUPP;
4048                 break;
4049         case CFG80211_STA_AP_CLIENT:
4050         case CFG80211_STA_AP_CLIENT_UNASSOC:
4051                 /* accept only the listed bits */
4052                 if (params->sta_flags_mask &
4053                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4054                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4055                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
4056                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4057                                   BIT(NL80211_STA_FLAG_WME) |
4058                                   BIT(NL80211_STA_FLAG_MFP)))
4059                         return -EINVAL;
4060
4061                 /* but authenticated/associated only if driver handles it */
4062                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4063                     params->sta_flags_mask &
4064                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4065                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4066                         return -EINVAL;
4067                 break;
4068         case CFG80211_STA_IBSS:
4069         case CFG80211_STA_AP_STA:
4070                 /* reject any changes other than AUTHORIZED */
4071                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4072                         return -EINVAL;
4073                 break;
4074         case CFG80211_STA_TDLS_PEER_SETUP:
4075                 /* reject any changes other than AUTHORIZED or WME */
4076                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4077                                                BIT(NL80211_STA_FLAG_WME)))
4078                         return -EINVAL;
4079                 /* force (at least) rates when authorizing */
4080                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4081                     !params->supported_rates)
4082                         return -EINVAL;
4083                 break;
4084         case CFG80211_STA_TDLS_PEER_ACTIVE:
4085                 /* reject any changes */
4086                 return -EINVAL;
4087         case CFG80211_STA_MESH_PEER_KERNEL:
4088                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4089                         return -EINVAL;
4090                 break;
4091         case CFG80211_STA_MESH_PEER_USER:
4092                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4093                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4094                         return -EINVAL;
4095                 break;
4096         }
4097
4098         return 0;
4099 }
4100 EXPORT_SYMBOL(cfg80211_check_station_change);
4101
4102 /*
4103  * Get vlan interface making sure it is running and on the right wiphy.
4104  */
4105 static struct net_device *get_vlan(struct genl_info *info,
4106                                    struct cfg80211_registered_device *rdev)
4107 {
4108         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4109         struct net_device *v;
4110         int ret;
4111
4112         if (!vlanattr)
4113                 return NULL;
4114
4115         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4116         if (!v)
4117                 return ERR_PTR(-ENODEV);
4118
4119         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4120                 ret = -EINVAL;
4121                 goto error;
4122         }
4123
4124         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4125             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4126             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4127                 ret = -EINVAL;
4128                 goto error;
4129         }
4130
4131         if (!netif_running(v)) {
4132                 ret = -ENETDOWN;
4133                 goto error;
4134         }
4135
4136         return v;
4137  error:
4138         dev_put(v);
4139         return ERR_PTR(ret);
4140 }
4141
4142 static const struct nla_policy
4143 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4144         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4145         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4146 };
4147
4148 static int nl80211_parse_sta_wme(struct genl_info *info,
4149                                  struct station_parameters *params)
4150 {
4151         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4152         struct nlattr *nla;
4153         int err;
4154
4155         /* parse WME attributes if present */
4156         if (!info->attrs[NL80211_ATTR_STA_WME])
4157                 return 0;
4158
4159         nla = info->attrs[NL80211_ATTR_STA_WME];
4160         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4161                                nl80211_sta_wme_policy);
4162         if (err)
4163                 return err;
4164
4165         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4166                 params->uapsd_queues = nla_get_u8(
4167                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
4168         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4169                 return -EINVAL;
4170
4171         if (tb[NL80211_STA_WME_MAX_SP])
4172                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4173
4174         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4175                 return -EINVAL;
4176
4177         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4178
4179         return 0;
4180 }
4181
4182 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4183                                       struct station_parameters *params)
4184 {
4185         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4186                 params->supported_channels =
4187                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4188                 params->supported_channels_len =
4189                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4190                 /*
4191                  * Need to include at least one (first channel, number of
4192                  * channels) tuple for each subband, and must have proper
4193                  * tuples for the rest of the data as well.
4194                  */
4195                 if (params->supported_channels_len < 2)
4196                         return -EINVAL;
4197                 if (params->supported_channels_len % 2)
4198                         return -EINVAL;
4199         }
4200
4201         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4202                 params->supported_oper_classes =
4203                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4204                 params->supported_oper_classes_len =
4205                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4206                 /*
4207                  * The value of the Length field of the Supported Operating
4208                  * Classes element is between 2 and 253.
4209                  */
4210                 if (params->supported_oper_classes_len < 2 ||
4211                     params->supported_oper_classes_len > 253)
4212                         return -EINVAL;
4213         }
4214         return 0;
4215 }
4216
4217 static int nl80211_set_station_tdls(struct genl_info *info,
4218                                     struct station_parameters *params)
4219 {
4220         int err;
4221         /* Dummy STA entry gets updated once the peer capabilities are known */
4222         if (info->attrs[NL80211_ATTR_PEER_AID])
4223                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4224         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4225                 params->ht_capa =
4226                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4227         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4228                 params->vht_capa =
4229                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4230
4231         err = nl80211_parse_sta_channel_info(info, params);
4232         if (err)
4233                 return err;
4234
4235         return nl80211_parse_sta_wme(info, params);
4236 }
4237
4238 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4239 {
4240         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4241         struct net_device *dev = info->user_ptr[1];
4242         struct station_parameters params;
4243         u8 *mac_addr;
4244         int err;
4245
4246         memset(&params, 0, sizeof(params));
4247
4248         if (!rdev->ops->change_station)
4249                 return -EOPNOTSUPP;
4250
4251         /*
4252          * AID and listen_interval properties can be set only for unassociated
4253          * station. Include these parameters here and will check them in
4254          * cfg80211_check_station_change().
4255          */
4256         if (info->attrs[NL80211_ATTR_PEER_AID])
4257                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4258
4259         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4260                 params.listen_interval =
4261                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4262         else
4263                 params.listen_interval = -1;
4264
4265         if (!info->attrs[NL80211_ATTR_MAC])
4266                 return -EINVAL;
4267
4268         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4269
4270         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4271                 params.supported_rates =
4272                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4273                 params.supported_rates_len =
4274                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4275         }
4276
4277         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4278                 params.capability =
4279                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4280                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4281         }
4282
4283         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4284                 params.ext_capab =
4285                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4286                 params.ext_capab_len =
4287                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4288         }
4289
4290         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4291                 return -EINVAL;
4292
4293         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4294                 params.plink_action =
4295                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4296                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4297                         return -EINVAL;
4298         }
4299
4300         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4301                 params.plink_state =
4302                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4303                 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4304                         return -EINVAL;
4305                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4306         }
4307
4308         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4309                 enum nl80211_mesh_power_mode pm = nla_get_u32(
4310                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4311
4312                 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4313                     pm > NL80211_MESH_POWER_MAX)
4314                         return -EINVAL;
4315
4316                 params.local_pm = pm;
4317         }
4318
4319         /* Include parameters for TDLS peer (will check later) */
4320         err = nl80211_set_station_tdls(info, &params);
4321         if (err)
4322                 return err;
4323
4324         params.vlan = get_vlan(info, rdev);
4325         if (IS_ERR(params.vlan))
4326                 return PTR_ERR(params.vlan);
4327
4328         switch (dev->ieee80211_ptr->iftype) {
4329         case NL80211_IFTYPE_AP:
4330         case NL80211_IFTYPE_AP_VLAN:
4331         case NL80211_IFTYPE_P2P_GO:
4332         case NL80211_IFTYPE_P2P_CLIENT:
4333         case NL80211_IFTYPE_STATION:
4334         case NL80211_IFTYPE_ADHOC:
4335         case NL80211_IFTYPE_MESH_POINT:
4336                 break;
4337         default:
4338                 err = -EOPNOTSUPP;
4339                 goto out_put_vlan;
4340         }
4341
4342         /* driver will call cfg80211_check_station_change() */
4343         err = rdev_change_station(rdev, dev, mac_addr, &params);
4344
4345  out_put_vlan:
4346         if (params.vlan)
4347                 dev_put(params.vlan);
4348
4349         return err;
4350 }
4351
4352 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4353 {
4354         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4355         int err;
4356         struct net_device *dev = info->user_ptr[1];
4357         struct station_parameters params;
4358         u8 *mac_addr = NULL;
4359
4360         memset(&params, 0, sizeof(params));
4361
4362         if (!rdev->ops->add_station)
4363                 return -EOPNOTSUPP;
4364
4365         if (!info->attrs[NL80211_ATTR_MAC])
4366                 return -EINVAL;
4367
4368         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4369                 return -EINVAL;
4370
4371         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4372                 return -EINVAL;
4373
4374         if (!info->attrs[NL80211_ATTR_STA_AID] &&
4375             !info->attrs[NL80211_ATTR_PEER_AID])
4376                 return -EINVAL;
4377
4378         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4379         params.supported_rates =
4380                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4381         params.supported_rates_len =
4382                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4383         params.listen_interval =
4384                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4385
4386         if (info->attrs[NL80211_ATTR_PEER_AID])
4387                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4388         else
4389                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4390         if (!params.aid || params.aid > IEEE80211_MAX_AID)
4391                 return -EINVAL;
4392
4393         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4394                 params.capability =
4395                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4396                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4397         }
4398
4399         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4400                 params.ext_capab =
4401                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4402                 params.ext_capab_len =
4403                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4404         }
4405
4406         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4407                 params.ht_capa =
4408                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4409
4410         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4411                 params.vht_capa =
4412                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4413
4414         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4415                 params.opmode_notif_used = true;
4416                 params.opmode_notif =
4417                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4418         }
4419
4420         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4421                 params.plink_action =
4422                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4423                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4424                         return -EINVAL;
4425         }
4426
4427         err = nl80211_parse_sta_channel_info(info, &params);
4428         if (err)
4429                 return err;
4430
4431         err = nl80211_parse_sta_wme(info, &params);
4432         if (err)
4433                 return err;
4434
4435         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4436                 return -EINVAL;
4437
4438         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
4439          * as userspace might just pass through the capabilities from the IEs
4440          * directly, rather than enforcing this restriction and returning an
4441          * error in this case.
4442          */
4443         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
4444                 params.ht_capa = NULL;
4445                 params.vht_capa = NULL;
4446         }
4447
4448         /* When you run into this, adjust the code below for the new flag */
4449         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4450
4451         switch (dev->ieee80211_ptr->iftype) {
4452         case NL80211_IFTYPE_AP:
4453         case NL80211_IFTYPE_AP_VLAN:
4454         case NL80211_IFTYPE_P2P_GO:
4455                 /* ignore WME attributes if iface/sta is not capable */
4456                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4457                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4458                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4459
4460                 /* TDLS peers cannot be added */
4461                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4462                     info->attrs[NL80211_ATTR_PEER_AID])
4463                         return -EINVAL;
4464                 /* but don't bother the driver with it */
4465                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4466
4467                 /* allow authenticated/associated only if driver handles it */
4468                 if (!(rdev->wiphy.features &
4469                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4470                     params.sta_flags_mask &
4471                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4472                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4473                         return -EINVAL;
4474
4475                 /* must be last in here for error handling */
4476                 params.vlan = get_vlan(info, rdev);
4477                 if (IS_ERR(params.vlan))
4478                         return PTR_ERR(params.vlan);
4479                 break;
4480         case NL80211_IFTYPE_MESH_POINT:
4481                 /* ignore uAPSD data */
4482                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4483
4484                 /* associated is disallowed */
4485                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4486                         return -EINVAL;
4487                 /* TDLS peers cannot be added */
4488                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4489                     info->attrs[NL80211_ATTR_PEER_AID])
4490                         return -EINVAL;
4491                 break;
4492         case NL80211_IFTYPE_STATION:
4493         case NL80211_IFTYPE_P2P_CLIENT:
4494                 /* ignore uAPSD data */
4495                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4496
4497                 /* these are disallowed */
4498                 if (params.sta_flags_mask &
4499                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4500                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4501                         return -EINVAL;
4502                 /* Only TDLS peers can be added */
4503                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4504                         return -EINVAL;
4505                 /* Can only add if TDLS ... */
4506                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4507                         return -EOPNOTSUPP;
4508                 /* ... with external setup is supported */
4509                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4510                         return -EOPNOTSUPP;
4511                 /*
4512                  * Older wpa_supplicant versions always mark the TDLS peer
4513                  * as authorized, but it shouldn't yet be.
4514                  */
4515                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4516                 break;
4517         default:
4518                 return -EOPNOTSUPP;
4519         }
4520
4521         /* be aware of params.vlan when changing code here */
4522
4523         err = rdev_add_station(rdev, dev, mac_addr, &params);
4524
4525         if (params.vlan)
4526                 dev_put(params.vlan);
4527         return err;
4528 }
4529
4530 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4531 {
4532         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4533         struct net_device *dev = info->user_ptr[1];
4534         struct station_del_parameters params;
4535
4536         memset(&params, 0, sizeof(params));
4537
4538         if (info->attrs[NL80211_ATTR_MAC])
4539                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
4540
4541         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4542             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4543             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4544             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4545                 return -EINVAL;
4546
4547         if (!rdev->ops->del_station)
4548                 return -EOPNOTSUPP;
4549
4550         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
4551                 params.subtype =
4552                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
4553                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
4554                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
4555                         return -EINVAL;
4556         } else {
4557                 /* Default to Deauthentication frame */
4558                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
4559         }
4560
4561         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
4562                 params.reason_code =
4563                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4564                 if (params.reason_code == 0)
4565                         return -EINVAL; /* 0 is reserved */
4566         } else {
4567                 /* Default to reason code 2 */
4568                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
4569         }
4570
4571         return rdev_del_station(rdev, dev, &params);
4572 }
4573
4574 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4575                                 int flags, struct net_device *dev,
4576                                 u8 *dst, u8 *next_hop,
4577                                 struct mpath_info *pinfo)
4578 {
4579         void *hdr;
4580         struct nlattr *pinfoattr;
4581
4582         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
4583         if (!hdr)
4584                 return -1;
4585
4586         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4587             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4588             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4589             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4590                 goto nla_put_failure;
4591
4592         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4593         if (!pinfoattr)
4594                 goto nla_put_failure;
4595         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4596             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4597                         pinfo->frame_qlen))
4598                 goto nla_put_failure;
4599         if (((pinfo->filled & MPATH_INFO_SN) &&
4600              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4601             ((pinfo->filled & MPATH_INFO_METRIC) &&
4602              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4603                          pinfo->metric)) ||
4604             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4605              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4606                          pinfo->exptime)) ||
4607             ((pinfo->filled & MPATH_INFO_FLAGS) &&
4608              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4609                         pinfo->flags)) ||
4610             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4611              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4612                          pinfo->discovery_timeout)) ||
4613             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4614              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4615                         pinfo->discovery_retries)))
4616                 goto nla_put_failure;
4617
4618         nla_nest_end(msg, pinfoattr);
4619
4620         genlmsg_end(msg, hdr);
4621         return 0;
4622
4623  nla_put_failure:
4624         genlmsg_cancel(msg, hdr);
4625         return -EMSGSIZE;
4626 }
4627
4628 static int nl80211_dump_mpath(struct sk_buff *skb,
4629                               struct netlink_callback *cb)
4630 {
4631         struct mpath_info pinfo;
4632         struct cfg80211_registered_device *rdev;
4633         struct wireless_dev *wdev;
4634         u8 dst[ETH_ALEN];
4635         u8 next_hop[ETH_ALEN];
4636         int path_idx = cb->args[2];
4637         int err;
4638
4639         rtnl_lock();
4640         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4641         if (err)
4642                 goto out_err;
4643
4644         if (!rdev->ops->dump_mpath) {
4645                 err = -EOPNOTSUPP;
4646                 goto out_err;
4647         }
4648
4649         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4650                 err = -EOPNOTSUPP;
4651                 goto out_err;
4652         }
4653
4654         while (1) {
4655                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4656                                       next_hop, &pinfo);
4657                 if (err == -ENOENT)
4658                         break;
4659                 if (err)
4660                         goto out_err;
4661
4662                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4663                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4664                                        wdev->netdev, dst, next_hop,
4665                                        &pinfo) < 0)
4666                         goto out;
4667
4668                 path_idx++;
4669         }
4670
4671
4672  out:
4673         cb->args[2] = path_idx;
4674         err = skb->len;
4675  out_err:
4676         rtnl_unlock();
4677         return err;
4678 }
4679
4680 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4681 {
4682         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4683         int err;
4684         struct net_device *dev = info->user_ptr[1];
4685         struct mpath_info pinfo;
4686         struct sk_buff *msg;
4687         u8 *dst = NULL;
4688         u8 next_hop[ETH_ALEN];
4689
4690         memset(&pinfo, 0, sizeof(pinfo));
4691
4692         if (!info->attrs[NL80211_ATTR_MAC])
4693                 return -EINVAL;
4694
4695         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4696
4697         if (!rdev->ops->get_mpath)
4698                 return -EOPNOTSUPP;
4699
4700         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4701                 return -EOPNOTSUPP;
4702
4703         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4704         if (err)
4705                 return err;
4706
4707         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4708         if (!msg)
4709                 return -ENOMEM;
4710
4711         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4712                                  dev, dst, next_hop, &pinfo) < 0) {
4713                 nlmsg_free(msg);
4714                 return -ENOBUFS;
4715         }
4716
4717         return genlmsg_reply(msg, info);
4718 }
4719
4720 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4721 {
4722         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4723         struct net_device *dev = info->user_ptr[1];
4724         u8 *dst = NULL;
4725         u8 *next_hop = NULL;
4726
4727         if (!info->attrs[NL80211_ATTR_MAC])
4728                 return -EINVAL;
4729
4730         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4731                 return -EINVAL;
4732
4733         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4734         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4735
4736         if (!rdev->ops->change_mpath)
4737                 return -EOPNOTSUPP;
4738
4739         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4740                 return -EOPNOTSUPP;
4741
4742         return rdev_change_mpath(rdev, dev, dst, next_hop);
4743 }
4744
4745 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4746 {
4747         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4748         struct net_device *dev = info->user_ptr[1];
4749         u8 *dst = NULL;
4750         u8 *next_hop = NULL;
4751
4752         if (!info->attrs[NL80211_ATTR_MAC])
4753                 return -EINVAL;
4754
4755         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4756                 return -EINVAL;
4757
4758         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4759         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4760
4761         if (!rdev->ops->add_mpath)
4762                 return -EOPNOTSUPP;
4763
4764         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4765                 return -EOPNOTSUPP;
4766
4767         return rdev_add_mpath(rdev, dev, dst, next_hop);
4768 }
4769
4770 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4771 {
4772         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4773         struct net_device *dev = info->user_ptr[1];
4774         u8 *dst = NULL;
4775
4776         if (info->attrs[NL80211_ATTR_MAC])
4777                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4778
4779         if (!rdev->ops->del_mpath)
4780                 return -EOPNOTSUPP;
4781
4782         return rdev_del_mpath(rdev, dev, dst);
4783 }
4784
4785 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
4786 {
4787         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4788         int err;
4789         struct net_device *dev = info->user_ptr[1];
4790         struct mpath_info pinfo;
4791         struct sk_buff *msg;
4792         u8 *dst = NULL;
4793         u8 mpp[ETH_ALEN];
4794
4795         memset(&pinfo, 0, sizeof(pinfo));
4796
4797         if (!info->attrs[NL80211_ATTR_MAC])
4798                 return -EINVAL;
4799
4800         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4801
4802         if (!rdev->ops->get_mpp)
4803                 return -EOPNOTSUPP;
4804
4805         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4806                 return -EOPNOTSUPP;
4807
4808         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
4809         if (err)
4810                 return err;
4811
4812         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4813         if (!msg)
4814                 return -ENOMEM;
4815
4816         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4817                                dev, dst, mpp, &pinfo) < 0) {
4818                 nlmsg_free(msg);
4819                 return -ENOBUFS;
4820         }
4821
4822         return genlmsg_reply(msg, info);
4823 }
4824
4825 static int nl80211_dump_mpp(struct sk_buff *skb,
4826                             struct netlink_callback *cb)
4827 {
4828         struct mpath_info pinfo;
4829         struct cfg80211_registered_device *rdev;
4830         struct wireless_dev *wdev;
4831         u8 dst[ETH_ALEN];
4832         u8 mpp[ETH_ALEN];
4833         int path_idx = cb->args[2];
4834         int err;
4835
4836         rtnl_lock();
4837         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4838         if (err)
4839                 goto out_err;
4840
4841         if (!rdev->ops->dump_mpp) {
4842                 err = -EOPNOTSUPP;
4843                 goto out_err;
4844         }
4845
4846         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4847                 err = -EOPNOTSUPP;
4848                 goto out_err;
4849         }
4850
4851         while (1) {
4852                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
4853                                     mpp, &pinfo);
4854                 if (err == -ENOENT)
4855                         break;
4856                 if (err)
4857                         goto out_err;
4858
4859                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4860                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4861                                        wdev->netdev, dst, mpp,
4862                                        &pinfo) < 0)
4863                         goto out;
4864
4865                 path_idx++;
4866         }
4867
4868  out:
4869         cb->args[2] = path_idx;
4870         err = skb->len;
4871  out_err:
4872         rtnl_unlock();
4873         return err;
4874 }
4875
4876 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4877 {
4878         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4879         struct net_device *dev = info->user_ptr[1];
4880         struct wireless_dev *wdev = dev->ieee80211_ptr;
4881         struct bss_parameters params;
4882         int err;
4883
4884         memset(&params, 0, sizeof(params));
4885         /* default to not changing parameters */
4886         params.use_cts_prot = -1;
4887         params.use_short_preamble = -1;
4888         params.use_short_slot_time = -1;
4889         params.ap_isolate = -1;
4890         params.ht_opmode = -1;
4891         params.p2p_ctwindow = -1;
4892         params.p2p_opp_ps = -1;
4893
4894         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4895                 params.use_cts_prot =
4896                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4897         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4898                 params.use_short_preamble =
4899                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4900         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4901                 params.use_short_slot_time =
4902                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4903         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4904                 params.basic_rates =
4905                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4906                 params.basic_rates_len =
4907                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4908         }
4909         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4910                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4911         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4912                 params.ht_opmode =
4913                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4914
4915         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4916                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4917                         return -EINVAL;
4918                 params.p2p_ctwindow =
4919                         nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4920                 if (params.p2p_ctwindow < 0)
4921                         return -EINVAL;
4922                 if (params.p2p_ctwindow != 0 &&
4923                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4924                         return -EINVAL;
4925         }
4926
4927         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4928                 u8 tmp;
4929
4930                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4931                         return -EINVAL;
4932                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4933                 if (tmp > 1)
4934                         return -EINVAL;
4935                 params.p2p_opp_ps = tmp;
4936                 if (params.p2p_opp_ps &&
4937                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4938                         return -EINVAL;
4939         }
4940
4941         if (!rdev->ops->change_bss)
4942                 return -EOPNOTSUPP;
4943
4944         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4945             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4946                 return -EOPNOTSUPP;
4947
4948         wdev_lock(wdev);
4949         err = rdev_change_bss(rdev, dev, &params);
4950         wdev_unlock(wdev);
4951
4952         return err;
4953 }
4954
4955 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4956 {
4957         char *data = NULL;
4958         bool is_indoor;
4959         enum nl80211_user_reg_hint_type user_reg_hint_type;
4960         u32 owner_nlportid;
4961
4962
4963         /*
4964          * You should only get this when cfg80211 hasn't yet initialized
4965          * completely when built-in to the kernel right between the time
4966          * window between nl80211_init() and regulatory_init(), if that is
4967          * even possible.
4968          */
4969         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4970                 return -EINPROGRESS;
4971
4972         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4973                 user_reg_hint_type =
4974                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4975         else
4976                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4977
4978         switch (user_reg_hint_type) {
4979         case NL80211_USER_REG_HINT_USER:
4980         case NL80211_USER_REG_HINT_CELL_BASE:
4981                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4982                         return -EINVAL;
4983
4984                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4985                 return regulatory_hint_user(data, user_reg_hint_type);
4986         case NL80211_USER_REG_HINT_INDOOR:
4987                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
4988                         owner_nlportid = info->snd_portid;
4989                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
4990                 } else {
4991                         owner_nlportid = 0;
4992                         is_indoor = true;
4993                 }
4994
4995                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
4996         default:
4997                 return -EINVAL;
4998         }
4999 }
5000
5001 static int nl80211_get_mesh_config(struct sk_buff *skb,
5002                                    struct genl_info *info)
5003 {
5004         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5005         struct net_device *dev = info->user_ptr[1];
5006         struct wireless_dev *wdev = dev->ieee80211_ptr;
5007         struct mesh_config cur_params;
5008         int err = 0;
5009         void *hdr;
5010         struct nlattr *pinfoattr;
5011         struct sk_buff *msg;
5012
5013         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5014                 return -EOPNOTSUPP;
5015
5016         if (!rdev->ops->get_mesh_config)
5017                 return -EOPNOTSUPP;
5018
5019         wdev_lock(wdev);
5020         /* If not connected, get default parameters */
5021         if (!wdev->mesh_id_len)
5022                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5023         else
5024                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5025         wdev_unlock(wdev);
5026
5027         if (err)
5028                 return err;
5029
5030         /* Draw up a netlink message to send back */
5031         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5032         if (!msg)
5033                 return -ENOMEM;
5034         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5035                              NL80211_CMD_GET_MESH_CONFIG);
5036         if (!hdr)
5037                 goto out;
5038         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5039         if (!pinfoattr)
5040                 goto nla_put_failure;
5041         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5042             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5043                         cur_params.dot11MeshRetryTimeout) ||
5044             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5045                         cur_params.dot11MeshConfirmTimeout) ||
5046             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5047                         cur_params.dot11MeshHoldingTimeout) ||
5048             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5049                         cur_params.dot11MeshMaxPeerLinks) ||
5050             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5051                        cur_params.dot11MeshMaxRetries) ||
5052             nla_put_u8(msg, NL80211_MESHCONF_TTL,
5053                        cur_params.dot11MeshTTL) ||
5054             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5055                        cur_params.element_ttl) ||
5056             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5057                        cur_params.auto_open_plinks) ||
5058             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5059                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5060             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5061                        cur_params.dot11MeshHWMPmaxPREQretries) ||
5062             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5063                         cur_params.path_refresh_time) ||
5064             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5065                         cur_params.min_discovery_timeout) ||
5066             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5067                         cur_params.dot11MeshHWMPactivePathTimeout) ||
5068             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5069                         cur_params.dot11MeshHWMPpreqMinInterval) ||
5070             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5071                         cur_params.dot11MeshHWMPperrMinInterval) ||
5072             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5073                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5074             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5075                        cur_params.dot11MeshHWMPRootMode) ||
5076             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5077                         cur_params.dot11MeshHWMPRannInterval) ||
5078             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5079                        cur_params.dot11MeshGateAnnouncementProtocol) ||
5080             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5081                        cur_params.dot11MeshForwarding) ||
5082             nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5083                         cur_params.rssi_threshold) ||
5084             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5085                         cur_params.ht_opmode) ||
5086             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5087                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5088             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5089                         cur_params.dot11MeshHWMProotInterval) ||
5090             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5091                         cur_params.dot11MeshHWMPconfirmationInterval) ||
5092             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5093                         cur_params.power_mode) ||
5094             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5095                         cur_params.dot11MeshAwakeWindowDuration) ||
5096             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5097                         cur_params.plink_timeout))
5098                 goto nla_put_failure;
5099         nla_nest_end(msg, pinfoattr);
5100         genlmsg_end(msg, hdr);
5101         return genlmsg_reply(msg, info);
5102
5103  nla_put_failure:
5104         genlmsg_cancel(msg, hdr);
5105  out:
5106         nlmsg_free(msg);
5107         return -ENOBUFS;
5108 }
5109
5110 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5111         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5112         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5113         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5114         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5115         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5116         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5117         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5118         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5119         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5120         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5121         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5122         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5123         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5124         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5125         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5126         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5127         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5128         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5129         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5130         [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5131         [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5132         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5133         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5134         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5135         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5136         [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5137         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5138         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5139 };
5140
5141 static const struct nla_policy
5142         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5143         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5144         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5145         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5146         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5147         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5148         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5149         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5150                                     .len = IEEE80211_MAX_DATA_LEN },
5151         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5152 };
5153
5154 static int nl80211_parse_mesh_config(struct genl_info *info,
5155                                      struct mesh_config *cfg,
5156                                      u32 *mask_out)
5157 {
5158         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5159         u32 mask = 0;
5160
5161 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5162 do {                                                                        \
5163         if (tb[attr]) {                                                     \
5164                 if (fn(tb[attr]) < min || fn(tb[attr]) > max)               \
5165                         return -EINVAL;                                     \
5166                 cfg->param = fn(tb[attr]);                                  \
5167                 mask |= (1 << (attr - 1));                                  \
5168         }                                                                   \
5169 } while (0)
5170
5171
5172         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5173                 return -EINVAL;
5174         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5175                              info->attrs[NL80211_ATTR_MESH_CONFIG],
5176                              nl80211_meshconf_params_policy))
5177                 return -EINVAL;
5178
5179         /* This makes sure that there aren't more than 32 mesh config
5180          * parameters (otherwise our bitfield scheme would not work.) */
5181         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5182
5183         /* Fill in the params struct */
5184         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5185                                   mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5186                                   nla_get_u16);
5187         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5188                                   mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5189                                   nla_get_u16);
5190         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5191                                   mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5192                                   nla_get_u16);
5193         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5194                                   mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5195                                   nla_get_u16);
5196         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5197                                   mask, NL80211_MESHCONF_MAX_RETRIES,
5198                                   nla_get_u8);
5199         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5200                                   mask, NL80211_MESHCONF_TTL, nla_get_u8);
5201         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5202                                   mask, NL80211_MESHCONF_ELEMENT_TTL,
5203                                   nla_get_u8);
5204         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5205                                   mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5206                                   nla_get_u8);
5207         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5208                                   1, 255, mask,
5209                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5210                                   nla_get_u32);
5211         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5212                                   mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5213                                   nla_get_u8);
5214         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5215                                   mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5216                                   nla_get_u32);
5217         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5218                                   mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5219                                   nla_get_u16);
5220         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5221                                   1, 65535, mask,
5222                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5223                                   nla_get_u32);
5224         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5225                                   1, 65535, mask,
5226                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5227                                   nla_get_u16);
5228         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5229                                   1, 65535, mask,
5230                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5231                                   nla_get_u16);
5232         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5233                                   dot11MeshHWMPnetDiameterTraversalTime,
5234                                   1, 65535, mask,
5235                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5236                                   nla_get_u16);
5237         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5238                                   mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5239                                   nla_get_u8);
5240         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5241                                   mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5242                                   nla_get_u16);
5243         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5244                                   dot11MeshGateAnnouncementProtocol, 0, 1,
5245                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5246                                   nla_get_u8);
5247         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5248                                   mask, NL80211_MESHCONF_FORWARDING,
5249                                   nla_get_u8);
5250         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5251                                   mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5252                                   nla_get_s32);
5253         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
5254                                   mask, NL80211_MESHCONF_HT_OPMODE,
5255                                   nla_get_u16);
5256         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5257                                   1, 65535, mask,
5258                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5259                                   nla_get_u32);
5260         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5261                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5262                                   nla_get_u16);
5263         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5264                                   dot11MeshHWMPconfirmationInterval,
5265                                   1, 65535, mask,
5266                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5267                                   nla_get_u16);
5268         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5269                                   NL80211_MESH_POWER_ACTIVE,
5270                                   NL80211_MESH_POWER_MAX,
5271                                   mask, NL80211_MESHCONF_POWER_MODE,
5272                                   nla_get_u32);
5273         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5274                                   0, 65535, mask,
5275                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
5276         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
5277                                   mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5278                                   nla_get_u32);
5279         if (mask_out)
5280                 *mask_out = mask;
5281
5282         return 0;
5283
5284 #undef FILL_IN_MESH_PARAM_IF_SET
5285 }
5286
5287 static int nl80211_parse_mesh_setup(struct genl_info *info,
5288                                      struct mesh_setup *setup)
5289 {
5290         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5291         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5292
5293         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5294                 return -EINVAL;
5295         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5296                              info->attrs[NL80211_ATTR_MESH_SETUP],
5297                              nl80211_mesh_setup_params_policy))
5298                 return -EINVAL;
5299
5300         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5301                 setup->sync_method =
5302                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5303                  IEEE80211_SYNC_METHOD_VENDOR :
5304                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5305
5306         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5307                 setup->path_sel_proto =
5308                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5309                  IEEE80211_PATH_PROTOCOL_VENDOR :
5310                  IEEE80211_PATH_PROTOCOL_HWMP;
5311
5312         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5313                 setup->path_metric =
5314                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5315                  IEEE80211_PATH_METRIC_VENDOR :
5316                  IEEE80211_PATH_METRIC_AIRTIME;
5317
5318
5319         if (tb[NL80211_MESH_SETUP_IE]) {
5320                 struct nlattr *ieattr =
5321                         tb[NL80211_MESH_SETUP_IE];
5322                 if (!is_valid_ie_attr(ieattr))
5323                         return -EINVAL;
5324                 setup->ie = nla_data(ieattr);
5325                 setup->ie_len = nla_len(ieattr);
5326         }
5327         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5328             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5329                 return -EINVAL;
5330         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5331         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5332         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5333         if (setup->is_secure)
5334                 setup->user_mpm = true;
5335
5336         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5337                 if (!setup->user_mpm)
5338                         return -EINVAL;
5339                 setup->auth_id =
5340                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5341         }
5342
5343         return 0;
5344 }
5345
5346 static int nl80211_update_mesh_config(struct sk_buff *skb,
5347                                       struct genl_info *info)
5348 {
5349         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5350         struct net_device *dev = info->user_ptr[1];
5351         struct wireless_dev *wdev = dev->ieee80211_ptr;
5352         struct mesh_config cfg;
5353         u32 mask;
5354         int err;
5355
5356         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5357                 return -EOPNOTSUPP;
5358
5359         if (!rdev->ops->update_mesh_config)
5360                 return -EOPNOTSUPP;
5361
5362         err = nl80211_parse_mesh_config(info, &cfg, &mask);
5363         if (err)
5364                 return err;
5365
5366         wdev_lock(wdev);
5367         if (!wdev->mesh_id_len)
5368                 err = -ENOLINK;
5369
5370         if (!err)
5371                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5372
5373         wdev_unlock(wdev);
5374
5375         return err;
5376 }
5377
5378 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
5379                               struct sk_buff *msg)
5380 {
5381         struct nlattr *nl_reg_rules;
5382         unsigned int i;
5383
5384         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5385             (regdom->dfs_region &&
5386              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5387                 goto nla_put_failure;
5388
5389         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5390         if (!nl_reg_rules)
5391                 goto nla_put_failure;
5392
5393         for (i = 0; i < regdom->n_reg_rules; i++) {
5394                 struct nlattr *nl_reg_rule;
5395                 const struct ieee80211_reg_rule *reg_rule;
5396                 const struct ieee80211_freq_range *freq_range;
5397                 const struct ieee80211_power_rule *power_rule;
5398                 unsigned int max_bandwidth_khz;
5399
5400                 reg_rule = &regdom->reg_rules[i];
5401                 freq_range = &reg_rule->freq_range;
5402                 power_rule = &reg_rule->power_rule;
5403
5404                 nl_reg_rule = nla_nest_start(msg, i);
5405                 if (!nl_reg_rule)
5406                         goto nla_put_failure;
5407
5408                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5409                 if (!max_bandwidth_khz)
5410                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5411                                                                   reg_rule);
5412
5413                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5414                                 reg_rule->flags) ||
5415                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5416                                 freq_range->start_freq_khz) ||
5417                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5418                                 freq_range->end_freq_khz) ||
5419                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5420                                 max_bandwidth_khz) ||
5421                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5422                                 power_rule->max_antenna_gain) ||
5423                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5424                                 power_rule->max_eirp) ||
5425                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5426                                 reg_rule->dfs_cac_ms))
5427                         goto nla_put_failure;
5428
5429                 nla_nest_end(msg, nl_reg_rule);
5430         }
5431
5432         nla_nest_end(msg, nl_reg_rules);
5433         return 0;
5434
5435 nla_put_failure:
5436         return -EMSGSIZE;
5437 }
5438
5439 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
5440 {
5441         const struct ieee80211_regdomain *regdom = NULL;
5442         struct cfg80211_registered_device *rdev;
5443         struct wiphy *wiphy = NULL;
5444         struct sk_buff *msg;
5445         void *hdr;
5446
5447         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5448         if (!msg)
5449                 return -ENOBUFS;
5450
5451         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5452                              NL80211_CMD_GET_REG);
5453         if (!hdr)
5454                 goto put_failure;
5455
5456         if (info->attrs[NL80211_ATTR_WIPHY]) {
5457                 bool self_managed;
5458
5459                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
5460                 if (IS_ERR(rdev)) {
5461                         nlmsg_free(msg);
5462                         return PTR_ERR(rdev);
5463                 }
5464
5465                 wiphy = &rdev->wiphy;
5466                 self_managed = wiphy->regulatory_flags &
5467                                REGULATORY_WIPHY_SELF_MANAGED;
5468                 regdom = get_wiphy_regdom(wiphy);
5469
5470                 /* a self-managed-reg device must have a private regdom */
5471                 if (WARN_ON(!regdom && self_managed)) {
5472                         nlmsg_free(msg);
5473                         return -EINVAL;
5474                 }
5475
5476                 if (regdom &&
5477                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5478                         goto nla_put_failure;
5479         }
5480
5481         if (!wiphy && reg_last_request_cell_base() &&
5482             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5483                         NL80211_USER_REG_HINT_CELL_BASE))
5484                 goto nla_put_failure;
5485
5486         rcu_read_lock();
5487
5488         if (!regdom)
5489                 regdom = rcu_dereference(cfg80211_regdomain);
5490
5491         if (nl80211_put_regdom(regdom, msg))
5492                 goto nla_put_failure_rcu;
5493
5494         rcu_read_unlock();
5495
5496         genlmsg_end(msg, hdr);
5497         return genlmsg_reply(msg, info);
5498
5499 nla_put_failure_rcu:
5500         rcu_read_unlock();
5501 nla_put_failure:
5502         genlmsg_cancel(msg, hdr);
5503 put_failure:
5504         nlmsg_free(msg);
5505         return -EMSGSIZE;
5506 }
5507
5508 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
5509                                u32 seq, int flags, struct wiphy *wiphy,
5510                                const struct ieee80211_regdomain *regdom)
5511 {
5512         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5513                                    NL80211_CMD_GET_REG);
5514
5515         if (!hdr)
5516                 return -1;
5517
5518         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5519
5520         if (nl80211_put_regdom(regdom, msg))
5521                 goto nla_put_failure;
5522
5523         if (!wiphy && reg_last_request_cell_base() &&
5524             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5525                         NL80211_USER_REG_HINT_CELL_BASE))
5526                 goto nla_put_failure;
5527
5528         if (wiphy &&
5529             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5530                 goto nla_put_failure;
5531
5532         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
5533             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
5534                 goto nla_put_failure;
5535
5536         genlmsg_end(msg, hdr);
5537         return 0;
5538
5539 nla_put_failure:
5540         genlmsg_cancel(msg, hdr);
5541         return -EMSGSIZE;
5542 }
5543
5544 static int nl80211_get_reg_dump(struct sk_buff *skb,
5545                                 struct netlink_callback *cb)
5546 {
5547         const struct ieee80211_regdomain *regdom = NULL;
5548         struct cfg80211_registered_device *rdev;
5549         int err, reg_idx, start = cb->args[2];
5550
5551         rtnl_lock();
5552
5553         if (cfg80211_regdomain && start == 0) {
5554                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5555                                           NLM_F_MULTI, NULL,
5556                                           rtnl_dereference(cfg80211_regdomain));
5557                 if (err < 0)
5558                         goto out_err;
5559         }
5560
5561         /* the global regdom is idx 0 */
5562         reg_idx = 1;
5563         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
5564                 regdom = get_wiphy_regdom(&rdev->wiphy);
5565                 if (!regdom)
5566                         continue;
5567
5568                 if (++reg_idx <= start)
5569                         continue;
5570
5571                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5572                                           NLM_F_MULTI, &rdev->wiphy, regdom);
5573                 if (err < 0) {
5574                         reg_idx--;
5575                         break;
5576                 }
5577         }
5578
5579         cb->args[2] = reg_idx;
5580         err = skb->len;
5581 out_err:
5582         rtnl_unlock();
5583         return err;
5584 }
5585
5586 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
5587 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
5588         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
5589         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
5590         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
5591         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
5592         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
5593         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
5594         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
5595 };
5596
5597 static int parse_reg_rule(struct nlattr *tb[],
5598         struct ieee80211_reg_rule *reg_rule)
5599 {
5600         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
5601         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
5602
5603         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
5604                 return -EINVAL;
5605         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
5606                 return -EINVAL;
5607         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
5608                 return -EINVAL;
5609         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
5610                 return -EINVAL;
5611         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
5612                 return -EINVAL;
5613
5614         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
5615
5616         freq_range->start_freq_khz =
5617                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
5618         freq_range->end_freq_khz =
5619                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
5620         freq_range->max_bandwidth_khz =
5621                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
5622
5623         power_rule->max_eirp =
5624                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
5625
5626         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
5627                 power_rule->max_antenna_gain =
5628                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
5629
5630         if (tb[NL80211_ATTR_DFS_CAC_TIME])
5631                 reg_rule->dfs_cac_ms =
5632                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
5633
5634         return 0;
5635 }
5636
5637 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5638 {
5639         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5640         struct nlattr *nl_reg_rule;
5641         char *alpha2;
5642         int rem_reg_rules, r;
5643         u32 num_rules = 0, rule_idx = 0, size_of_regd;
5644         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5645         struct ieee80211_regdomain *rd;
5646
5647         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5648                 return -EINVAL;
5649
5650         if (!info->attrs[NL80211_ATTR_REG_RULES])
5651                 return -EINVAL;
5652
5653         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5654
5655         if (info->attrs[NL80211_ATTR_DFS_REGION])
5656                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5657
5658         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5659                             rem_reg_rules) {
5660                 num_rules++;
5661                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5662                         return -EINVAL;
5663         }
5664
5665         if (!reg_is_valid_request(alpha2))
5666                 return -EINVAL;
5667
5668         size_of_regd = sizeof(struct ieee80211_regdomain) +
5669                        num_rules * sizeof(struct ieee80211_reg_rule);
5670
5671         rd = kzalloc(size_of_regd, GFP_KERNEL);
5672         if (!rd)
5673                 return -ENOMEM;
5674
5675         rd->n_reg_rules = num_rules;
5676         rd->alpha2[0] = alpha2[0];
5677         rd->alpha2[1] = alpha2[1];
5678
5679         /*
5680          * Disable DFS master mode if the DFS region was
5681          * not supported or known on this kernel.
5682          */
5683         if (reg_supported_dfs_region(dfs_region))
5684                 rd->dfs_region = dfs_region;
5685
5686         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5687                             rem_reg_rules) {
5688                 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5689                               nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5690                               reg_rule_policy);
5691                 if (r)
5692                         goto bad_reg;
5693                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5694                 if (r)
5695                         goto bad_reg;
5696
5697                 rule_idx++;
5698
5699                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5700                         r = -EINVAL;
5701                         goto bad_reg;
5702                 }
5703         }
5704
5705         r = set_regdom(rd, REGD_SOURCE_CRDA);
5706         /* set_regdom took ownership */
5707         rd = NULL;
5708
5709  bad_reg:
5710         kfree(rd);
5711         return r;
5712 }
5713 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
5714
5715 static int validate_scan_freqs(struct nlattr *freqs)
5716 {
5717         struct nlattr *attr1, *attr2;
5718         int n_channels = 0, tmp1, tmp2;
5719
5720         nla_for_each_nested(attr1, freqs, tmp1)
5721                 if (nla_len(attr1) != sizeof(u32))
5722                         return 0;
5723
5724         nla_for_each_nested(attr1, freqs, tmp1) {
5725                 n_channels++;
5726                 /*
5727                  * Some hardware has a limited channel list for
5728                  * scanning, and it is pretty much nonsensical
5729                  * to scan for a channel twice, so disallow that
5730                  * and don't require drivers to check that the
5731                  * channel list they get isn't longer than what
5732                  * they can scan, as long as they can scan all
5733                  * the channels they registered at once.
5734                  */
5735                 nla_for_each_nested(attr2, freqs, tmp2)
5736                         if (attr1 != attr2 &&
5737                             nla_get_u32(attr1) == nla_get_u32(attr2))
5738                                 return 0;
5739         }
5740
5741         return n_channels;
5742 }
5743
5744 static int nl80211_parse_random_mac(struct nlattr **attrs,
5745                                     u8 *mac_addr, u8 *mac_addr_mask)
5746 {
5747         int i;
5748
5749         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
5750                 eth_zero_addr(mac_addr);
5751                 eth_zero_addr(mac_addr_mask);
5752                 mac_addr[0] = 0x2;
5753                 mac_addr_mask[0] = 0x3;
5754
5755                 return 0;
5756         }
5757
5758         /* need both or none */
5759         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
5760                 return -EINVAL;
5761
5762         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
5763         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
5764
5765         /* don't allow or configure an mcast address */
5766         if (!is_multicast_ether_addr(mac_addr_mask) ||
5767             is_multicast_ether_addr(mac_addr))
5768                 return -EINVAL;
5769
5770         /*
5771          * allow users to pass a MAC address that has bits set outside
5772          * of the mask, but don't bother drivers with having to deal
5773          * with such bits
5774          */
5775         for (i = 0; i < ETH_ALEN; i++)
5776                 mac_addr[i] &= mac_addr_mask[i];
5777
5778         return 0;
5779 }
5780
5781 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5782 {
5783         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5784         struct wireless_dev *wdev = info->user_ptr[1];
5785         struct cfg80211_scan_request *request;
5786         struct nlattr *attr;
5787         struct wiphy *wiphy;
5788         int err, tmp, n_ssids = 0, n_channels, i;
5789         size_t ie_len;
5790
5791         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5792                 return -EINVAL;
5793
5794         wiphy = &rdev->wiphy;
5795
5796         if (!rdev->ops->scan)
5797                 return -EOPNOTSUPP;
5798
5799         if (rdev->scan_req || rdev->scan_msg) {
5800                 err = -EBUSY;
5801                 goto unlock;
5802         }
5803
5804         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5805                 n_channels = validate_scan_freqs(
5806                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5807                 if (!n_channels) {
5808                         err = -EINVAL;
5809                         goto unlock;
5810                 }
5811         } else {
5812                 n_channels = ieee80211_get_num_supported_channels(wiphy);
5813         }
5814
5815         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5816                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5817                         n_ssids++;
5818
5819         if (n_ssids > wiphy->max_scan_ssids) {
5820                 err = -EINVAL;
5821                 goto unlock;
5822         }
5823
5824         if (info->attrs[NL80211_ATTR_IE])
5825                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5826         else
5827                 ie_len = 0;
5828
5829         if (ie_len > wiphy->max_scan_ie_len) {
5830                 err = -EINVAL;
5831                 goto unlock;
5832         }
5833
5834         request = kzalloc(sizeof(*request)
5835                         + sizeof(*request->ssids) * n_ssids
5836                         + sizeof(*request->channels) * n_channels
5837                         + ie_len, GFP_KERNEL);
5838         if (!request) {
5839                 err = -ENOMEM;
5840                 goto unlock;
5841         }
5842
5843         if (n_ssids)
5844                 request->ssids = (void *)&request->channels[n_channels];
5845         request->n_ssids = n_ssids;
5846         if (ie_len) {
5847                 if (n_ssids)
5848                         request->ie = (void *)(request->ssids + n_ssids);
5849                 else
5850                         request->ie = (void *)(request->channels + n_channels);
5851         }
5852
5853         i = 0;
5854         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5855                 /* user specified, bail out if channel not found */
5856                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5857                         struct ieee80211_channel *chan;
5858
5859                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5860
5861                         if (!chan) {
5862                                 err = -EINVAL;
5863                                 goto out_free;
5864                         }
5865
5866                         /* ignore disabled channels */
5867                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5868                                 continue;
5869
5870                         request->channels[i] = chan;
5871                         i++;
5872                 }
5873         } else {
5874                 enum ieee80211_band band;
5875
5876                 /* all channels */
5877                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5878                         int j;
5879                         if (!wiphy->bands[band])
5880                                 continue;
5881                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5882                                 struct ieee80211_channel *chan;
5883
5884                                 chan = &wiphy->bands[band]->channels[j];
5885
5886                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5887                                         continue;
5888
5889                                 request->channels[i] = chan;
5890                                 i++;
5891                         }
5892                 }
5893         }
5894
5895         if (!i) {
5896                 err = -EINVAL;
5897                 goto out_free;
5898         }
5899
5900         request->n_channels = i;
5901
5902         i = 0;
5903         if (n_ssids) {
5904                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5905                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5906                                 err = -EINVAL;
5907                                 goto out_free;
5908                         }
5909                         request->ssids[i].ssid_len = nla_len(attr);
5910                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5911                         i++;
5912                 }
5913         }
5914
5915         if (info->attrs[NL80211_ATTR_IE]) {
5916                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5917                 memcpy((void *)request->ie,
5918                        nla_data(info->attrs[NL80211_ATTR_IE]),
5919                        request->ie_len);
5920         }
5921
5922         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5923                 if (wiphy->bands[i])
5924                         request->rates[i] =
5925                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
5926
5927         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5928                 nla_for_each_nested(attr,
5929                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5930                                     tmp) {
5931                         enum ieee80211_band band = nla_type(attr);
5932
5933                         if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5934                                 err = -EINVAL;
5935                                 goto out_free;
5936                         }
5937
5938                         if (!wiphy->bands[band])
5939                                 continue;
5940
5941                         err = ieee80211_get_ratemask(wiphy->bands[band],
5942                                                      nla_data(attr),
5943                                                      nla_len(attr),
5944                                                      &request->rates[band]);
5945                         if (err)
5946                                 goto out_free;
5947                 }
5948         }
5949
5950         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5951                 request->flags = nla_get_u32(
5952                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5953                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5954                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5955                         err = -EOPNOTSUPP;
5956                         goto out_free;
5957                 }
5958
5959                 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
5960                         if (!(wiphy->features &
5961                                         NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
5962                                 err = -EOPNOTSUPP;
5963                                 goto out_free;
5964                         }
5965
5966                         if (wdev->current_bss) {
5967                                 err = -EOPNOTSUPP;
5968                                 goto out_free;
5969                         }
5970
5971                         err = nl80211_parse_random_mac(info->attrs,
5972                                                        request->mac_addr,
5973                                                        request->mac_addr_mask);
5974                         if (err)
5975                                 goto out_free;
5976                 }
5977         }
5978
5979         request->no_cck =
5980                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5981
5982         request->wdev = wdev;
5983         request->wiphy = &rdev->wiphy;
5984         request->scan_start = jiffies;
5985
5986         rdev->scan_req = request;
5987         err = rdev_scan(rdev, request);
5988
5989         if (!err) {
5990                 nl80211_send_scan_start(rdev, wdev);
5991                 if (wdev->netdev)
5992                         dev_hold(wdev->netdev);
5993         } else {
5994  out_free:
5995                 rdev->scan_req = NULL;
5996                 kfree(request);
5997         }
5998
5999  unlock:
6000         return err;
6001 }
6002
6003 static int
6004 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
6005                                struct cfg80211_sched_scan_request *request,
6006                                struct nlattr **attrs)
6007 {
6008         int tmp, err, i = 0;
6009         struct nlattr *attr;
6010
6011         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6012                 u32 interval;
6013
6014                 /*
6015                  * If scan plans are not specified,
6016                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL must be specified. In this
6017                  * case one scan plan will be set with the specified scan
6018                  * interval and infinite number of iterations.
6019                  */
6020                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6021                         return -EINVAL;
6022
6023                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
6024                 if (!interval)
6025                         return -EINVAL;
6026
6027                 request->scan_plans[0].interval =
6028                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
6029                 if (!request->scan_plans[0].interval)
6030                         return -EINVAL;
6031
6032                 if (request->scan_plans[0].interval >
6033                     wiphy->max_sched_scan_plan_interval)
6034                         request->scan_plans[0].interval =
6035                                 wiphy->max_sched_scan_plan_interval;
6036
6037                 return 0;
6038         }
6039
6040         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
6041                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
6042
6043                 if (WARN_ON(i >= n_plans))
6044                         return -EINVAL;
6045
6046                 err = nla_parse(plan, NL80211_SCHED_SCAN_PLAN_MAX,
6047                                 nla_data(attr), nla_len(attr),
6048                                 nl80211_plan_policy);
6049                 if (err)
6050                         return err;
6051
6052                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
6053                         return -EINVAL;
6054
6055                 request->scan_plans[i].interval =
6056                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
6057                 if (!request->scan_plans[i].interval ||
6058                     request->scan_plans[i].interval >
6059                     wiphy->max_sched_scan_plan_interval)
6060                         return -EINVAL;
6061
6062                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
6063                         request->scan_plans[i].iterations =
6064                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
6065                         if (!request->scan_plans[i].iterations ||
6066                             (request->scan_plans[i].iterations >
6067                              wiphy->max_sched_scan_plan_iterations))
6068                                 return -EINVAL;
6069                 } else if (i < n_plans - 1) {
6070                         /*
6071                          * All scan plans but the last one must specify
6072                          * a finite number of iterations
6073                          */
6074                         return -EINVAL;
6075                 }
6076
6077                 i++;
6078         }
6079
6080         /*
6081          * The last scan plan must not specify the number of
6082          * iterations, it is supposed to run infinitely
6083          */
6084         if (request->scan_plans[n_plans - 1].iterations)
6085                 return  -EINVAL;
6086
6087         return 0;
6088 }
6089
6090 static struct cfg80211_sched_scan_request *
6091 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
6092                          struct nlattr **attrs)
6093 {
6094         struct cfg80211_sched_scan_request *request;
6095         struct nlattr *attr;
6096         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
6097         enum ieee80211_band band;
6098         size_t ie_len;
6099         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
6100         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
6101
6102         if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
6103                 return ERR_PTR(-EINVAL);
6104
6105         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6106                 n_channels = validate_scan_freqs(
6107                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6108                 if (!n_channels)
6109                         return ERR_PTR(-EINVAL);
6110         } else {
6111                 n_channels = ieee80211_get_num_supported_channels(wiphy);
6112         }
6113
6114         if (attrs[NL80211_ATTR_SCAN_SSIDS])
6115                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6116                                     tmp)
6117                         n_ssids++;
6118
6119         if (n_ssids > wiphy->max_sched_scan_ssids)
6120                 return ERR_PTR(-EINVAL);
6121
6122         /*
6123          * First, count the number of 'real' matchsets. Due to an issue with
6124          * the old implementation, matchsets containing only the RSSI attribute
6125          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
6126          * RSSI for all matchsets, rather than their own matchset for reporting
6127          * all APs with a strong RSSI. This is needed to be compatible with
6128          * older userspace that treated a matchset with only the RSSI as the
6129          * global RSSI for all other matchsets - if there are other matchsets.
6130          */
6131         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6132                 nla_for_each_nested(attr,
6133                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6134                                     tmp) {
6135                         struct nlattr *rssi;
6136
6137                         err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6138                                         nla_data(attr), nla_len(attr),
6139                                         nl80211_match_policy);
6140                         if (err)
6141                                 return ERR_PTR(err);
6142                         /* add other standalone attributes here */
6143                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
6144                                 n_match_sets++;
6145                                 continue;
6146                         }
6147                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6148                         if (rssi)
6149                                 default_match_rssi = nla_get_s32(rssi);
6150                 }
6151         }
6152
6153         /* However, if there's no other matchset, add the RSSI one */
6154         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
6155                 n_match_sets = 1;
6156
6157         if (n_match_sets > wiphy->max_match_sets)
6158                 return ERR_PTR(-EINVAL);
6159
6160         if (attrs[NL80211_ATTR_IE])
6161                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
6162         else
6163                 ie_len = 0;
6164
6165         if (ie_len > wiphy->max_sched_scan_ie_len)
6166                 return ERR_PTR(-EINVAL);
6167
6168         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6169                 /*
6170                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
6171                  * each scan plan already specifies its own interval
6172                  */
6173                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6174                         return ERR_PTR(-EINVAL);
6175
6176                 nla_for_each_nested(attr,
6177                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
6178                         n_plans++;
6179         } else {
6180                 /*
6181                  * The scan interval attribute is kept for backward
6182                  * compatibility. If no scan plans are specified and sched scan
6183                  * interval is specified, one scan plan will be set with this
6184                  * scan interval and infinite number of iterations.
6185                  */
6186                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6187                         return ERR_PTR(-EINVAL);
6188
6189                 n_plans = 1;
6190         }
6191
6192         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
6193                 return ERR_PTR(-EINVAL);
6194
6195         request = kzalloc(sizeof(*request)
6196                         + sizeof(*request->ssids) * n_ssids
6197                         + sizeof(*request->match_sets) * n_match_sets
6198                         + sizeof(*request->scan_plans) * n_plans
6199                         + sizeof(*request->channels) * n_channels
6200                         + ie_len, GFP_KERNEL);
6201         if (!request)
6202                 return ERR_PTR(-ENOMEM);
6203
6204         if (n_ssids)
6205                 request->ssids = (void *)&request->channels[n_channels];
6206         request->n_ssids = n_ssids;
6207         if (ie_len) {
6208                 if (n_ssids)
6209                         request->ie = (void *)(request->ssids + n_ssids);
6210                 else
6211                         request->ie = (void *)(request->channels + n_channels);
6212         }
6213
6214         if (n_match_sets) {
6215                 if (request->ie)
6216                         request->match_sets = (void *)(request->ie + ie_len);
6217                 else if (n_ssids)
6218                         request->match_sets =
6219                                 (void *)(request->ssids + n_ssids);
6220                 else
6221                         request->match_sets =
6222                                 (void *)(request->channels + n_channels);
6223         }
6224         request->n_match_sets = n_match_sets;
6225
6226         if (n_match_sets)
6227                 request->scan_plans = (void *)(request->match_sets +
6228                                                n_match_sets);
6229         else if (request->ie)
6230                 request->scan_plans = (void *)(request->ie + ie_len);
6231         else if (n_ssids)
6232                 request->scan_plans = (void *)(request->ssids + n_ssids);
6233         else
6234                 request->scan_plans = (void *)(request->channels + n_channels);
6235
6236         request->n_scan_plans = n_plans;
6237
6238         i = 0;
6239         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6240                 /* user specified, bail out if channel not found */
6241                 nla_for_each_nested(attr,
6242                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
6243                                     tmp) {
6244                         struct ieee80211_channel *chan;
6245
6246                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6247
6248                         if (!chan) {
6249                                 err = -EINVAL;
6250                                 goto out_free;
6251                         }
6252
6253                         /* ignore disabled channels */
6254                         if (chan->flags & IEEE80211_CHAN_DISABLED)
6255                                 continue;
6256
6257                         request->channels[i] = chan;
6258                         i++;
6259                 }
6260         } else {
6261                 /* all channels */
6262                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6263                         int j;
6264                         if (!wiphy->bands[band])
6265                                 continue;
6266                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6267                                 struct ieee80211_channel *chan;
6268
6269                                 chan = &wiphy->bands[band]->channels[j];
6270
6271                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
6272                                         continue;
6273
6274                                 request->channels[i] = chan;
6275                                 i++;
6276                         }
6277                 }
6278         }
6279
6280         if (!i) {
6281                 err = -EINVAL;
6282                 goto out_free;
6283         }
6284
6285         request->n_channels = i;
6286
6287         i = 0;
6288         if (n_ssids) {
6289                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6290                                     tmp) {
6291                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6292                                 err = -EINVAL;
6293                                 goto out_free;
6294                         }
6295                         request->ssids[i].ssid_len = nla_len(attr);
6296                         memcpy(request->ssids[i].ssid, nla_data(attr),
6297                                nla_len(attr));
6298                         i++;
6299                 }
6300         }
6301
6302         i = 0;
6303         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6304                 nla_for_each_nested(attr,
6305                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6306                                     tmp) {
6307                         struct nlattr *ssid, *rssi;
6308
6309                         err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6310                                         nla_data(attr), nla_len(attr),
6311                                         nl80211_match_policy);
6312                         if (err)
6313                                 goto out_free;
6314                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
6315                         if (ssid) {
6316                                 if (WARN_ON(i >= n_match_sets)) {
6317                                         /* this indicates a programming error,
6318                                          * the loop above should have verified
6319                                          * things properly
6320                                          */
6321                                         err = -EINVAL;
6322                                         goto out_free;
6323                                 }
6324
6325                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
6326                                         err = -EINVAL;
6327                                         goto out_free;
6328                                 }
6329                                 memcpy(request->match_sets[i].ssid.ssid,
6330                                        nla_data(ssid), nla_len(ssid));
6331                                 request->match_sets[i].ssid.ssid_len =
6332                                         nla_len(ssid);
6333                                 /* special attribute - old implemenation w/a */
6334                                 request->match_sets[i].rssi_thold =
6335                                         default_match_rssi;
6336                                 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6337                                 if (rssi)
6338                                         request->match_sets[i].rssi_thold =
6339                                                 nla_get_s32(rssi);
6340                         }
6341                         i++;
6342                 }
6343
6344                 /* there was no other matchset, so the RSSI one is alone */
6345                 if (i == 0 && n_match_sets)
6346                         request->match_sets[0].rssi_thold = default_match_rssi;
6347
6348                 request->min_rssi_thold = INT_MAX;
6349                 for (i = 0; i < n_match_sets; i++)
6350                         request->min_rssi_thold =
6351                                 min(request->match_sets[i].rssi_thold,
6352                                     request->min_rssi_thold);
6353         } else {
6354                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
6355         }
6356
6357         if (ie_len) {
6358                 request->ie_len = ie_len;
6359                 memcpy((void *)request->ie,
6360                        nla_data(attrs[NL80211_ATTR_IE]),
6361                        request->ie_len);
6362         }
6363
6364         if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
6365                 request->flags = nla_get_u32(
6366                         attrs[NL80211_ATTR_SCAN_FLAGS]);
6367                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6368                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6369                         err = -EOPNOTSUPP;
6370                         goto out_free;
6371                 }
6372
6373                 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6374                         u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
6375
6376                         if (!wdev) /* must be net-detect */
6377                                 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6378
6379                         if (!(wiphy->features & flg)) {
6380                                 err = -EOPNOTSUPP;
6381                                 goto out_free;
6382                         }
6383
6384                         if (wdev && wdev->current_bss) {
6385                                 err = -EOPNOTSUPP;
6386                                 goto out_free;
6387                         }
6388
6389                         err = nl80211_parse_random_mac(attrs, request->mac_addr,
6390                                                        request->mac_addr_mask);
6391                         if (err)
6392                                 goto out_free;
6393                 }
6394         }
6395
6396         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
6397                 request->delay =
6398                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
6399
6400         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
6401         if (err)
6402                 goto out_free;
6403
6404         request->scan_start = jiffies;
6405
6406         return request;
6407
6408 out_free:
6409         kfree(request);
6410         return ERR_PTR(err);
6411 }
6412
6413 static int nl80211_start_sched_scan(struct sk_buff *skb,
6414                                     struct genl_info *info)
6415 {
6416         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6417         struct net_device *dev = info->user_ptr[1];
6418         struct wireless_dev *wdev = dev->ieee80211_ptr;
6419         struct cfg80211_sched_scan_request *sched_scan_req;
6420         int err;
6421
6422         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6423             !rdev->ops->sched_scan_start)
6424                 return -EOPNOTSUPP;
6425
6426         if (rdev->sched_scan_req)
6427                 return -EINPROGRESS;
6428
6429         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
6430                                                   info->attrs);
6431
6432         err = PTR_ERR_OR_ZERO(sched_scan_req);
6433         if (err)
6434                 goto out_err;
6435
6436         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
6437         if (err)
6438                 goto out_free;
6439
6440         sched_scan_req->dev = dev;
6441         sched_scan_req->wiphy = &rdev->wiphy;
6442
6443         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6444                 sched_scan_req->owner_nlportid = info->snd_portid;
6445
6446         rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
6447
6448         nl80211_send_sched_scan(rdev, dev,
6449                                 NL80211_CMD_START_SCHED_SCAN);
6450         return 0;
6451
6452 out_free:
6453         kfree(sched_scan_req);
6454 out_err:
6455         return err;
6456 }
6457
6458 static int nl80211_stop_sched_scan(struct sk_buff *skb,
6459                                    struct genl_info *info)
6460 {
6461         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6462
6463         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6464             !rdev->ops->sched_scan_stop)
6465                 return -EOPNOTSUPP;
6466
6467         return __cfg80211_stop_sched_scan(rdev, false);
6468 }
6469
6470 static int nl80211_start_radar_detection(struct sk_buff *skb,
6471                                          struct genl_info *info)
6472 {
6473         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6474         struct net_device *dev = info->user_ptr[1];
6475         struct wireless_dev *wdev = dev->ieee80211_ptr;
6476         struct cfg80211_chan_def chandef;
6477         enum nl80211_dfs_regions dfs_region;
6478         unsigned int cac_time_ms;
6479         int err;
6480
6481         dfs_region = reg_get_dfs_region(wdev->wiphy);
6482         if (dfs_region == NL80211_DFS_UNSET)
6483                 return -EINVAL;
6484
6485         err = nl80211_parse_chandef(rdev, info, &chandef);
6486         if (err)
6487                 return err;
6488
6489         if (netif_carrier_ok(dev))
6490                 return -EBUSY;
6491
6492         if (wdev->cac_started)
6493                 return -EBUSY;
6494
6495         err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6496                                             wdev->iftype);
6497         if (err < 0)
6498                 return err;
6499
6500         if (err == 0)
6501                 return -EINVAL;
6502
6503         if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6504                 return -EINVAL;
6505
6506         if (!rdev->ops->start_radar_detection)
6507                 return -EOPNOTSUPP;
6508
6509         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6510         if (WARN_ON(!cac_time_ms))
6511                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6512
6513         err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef,
6514                                                cac_time_ms);
6515         if (!err) {
6516                 wdev->chandef = chandef;
6517                 wdev->cac_started = true;
6518                 wdev->cac_start_time = jiffies;
6519                 wdev->cac_time_ms = cac_time_ms;
6520         }
6521         return err;
6522 }
6523
6524 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6525 {
6526         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6527         struct net_device *dev = info->user_ptr[1];
6528         struct wireless_dev *wdev = dev->ieee80211_ptr;
6529         struct cfg80211_csa_settings params;
6530         /* csa_attrs is defined static to avoid waste of stack size - this
6531          * function is called under RTNL lock, so this should not be a problem.
6532          */
6533         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6534         int err;
6535         bool need_new_beacon = false;
6536         int len, i;
6537         u32 cs_count;
6538
6539         if (!rdev->ops->channel_switch ||
6540             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6541                 return -EOPNOTSUPP;
6542
6543         switch (dev->ieee80211_ptr->iftype) {
6544         case NL80211_IFTYPE_AP:
6545         case NL80211_IFTYPE_P2P_GO:
6546                 need_new_beacon = true;
6547
6548                 /* useless if AP is not running */
6549                 if (!wdev->beacon_interval)
6550                         return -ENOTCONN;
6551                 break;
6552         case NL80211_IFTYPE_ADHOC:
6553                 if (!wdev->ssid_len)
6554                         return -ENOTCONN;
6555                 break;
6556         case NL80211_IFTYPE_MESH_POINT:
6557                 if (!wdev->mesh_id_len)
6558                         return -ENOTCONN;
6559                 break;
6560         default:
6561                 return -EOPNOTSUPP;
6562         }
6563
6564         memset(&params, 0, sizeof(params));
6565
6566         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6567             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6568                 return -EINVAL;
6569
6570         /* only important for AP, IBSS and mesh create IEs internally */
6571         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6572                 return -EINVAL;
6573
6574         /* Even though the attribute is u32, the specification says
6575          * u8, so let's make sure we don't overflow.
6576          */
6577         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6578         if (cs_count > 255)
6579                 return -EINVAL;
6580
6581         params.count = cs_count;
6582
6583         if (!need_new_beacon)
6584                 goto skip_beacons;
6585
6586         err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6587         if (err)
6588                 return err;
6589
6590         err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6591                                info->attrs[NL80211_ATTR_CSA_IES],
6592                                nl80211_policy);
6593         if (err)
6594                 return err;
6595
6596         err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6597         if (err)
6598                 return err;
6599
6600         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6601                 return -EINVAL;
6602
6603         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6604         if (!len || (len % sizeof(u16)))
6605                 return -EINVAL;
6606
6607         params.n_counter_offsets_beacon = len / sizeof(u16);
6608         if (rdev->wiphy.max_num_csa_counters &&
6609             (params.n_counter_offsets_beacon >
6610              rdev->wiphy.max_num_csa_counters))
6611                 return -EINVAL;
6612
6613         params.counter_offsets_beacon =
6614                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6615
6616         /* sanity checks - counters should fit and be the same */
6617         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6618                 u16 offset = params.counter_offsets_beacon[i];
6619
6620                 if (offset >= params.beacon_csa.tail_len)
6621                         return -EINVAL;
6622
6623                 if (params.beacon_csa.tail[offset] != params.count)
6624                         return -EINVAL;
6625         }
6626
6627         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6628                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6629                 if (!len || (len % sizeof(u16)))
6630                         return -EINVAL;
6631
6632                 params.n_counter_offsets_presp = len / sizeof(u16);
6633                 if (rdev->wiphy.max_num_csa_counters &&
6634                     (params.n_counter_offsets_presp >
6635                      rdev->wiphy.max_num_csa_counters))
6636                         return -EINVAL;
6637
6638                 params.counter_offsets_presp =
6639                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6640
6641                 /* sanity checks - counters should fit and be the same */
6642                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6643                         u16 offset = params.counter_offsets_presp[i];
6644
6645                         if (offset >= params.beacon_csa.probe_resp_len)
6646                                 return -EINVAL;
6647
6648                         if (params.beacon_csa.probe_resp[offset] !=
6649                             params.count)
6650                                 return -EINVAL;
6651                 }
6652         }
6653
6654 skip_beacons:
6655         err = nl80211_parse_chandef(rdev, info, &params.chandef);
6656         if (err)
6657                 return err;
6658
6659         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
6660                                            wdev->iftype))
6661                 return -EINVAL;
6662
6663         err = cfg80211_chandef_dfs_required(wdev->wiphy,
6664                                             &params.chandef,
6665                                             wdev->iftype);
6666         if (err < 0)
6667                 return err;
6668
6669         if (err > 0)
6670                 params.radar_required = true;
6671
6672         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6673                 params.block_tx = true;
6674
6675         wdev_lock(wdev);
6676         err = rdev_channel_switch(rdev, dev, &params);
6677         wdev_unlock(wdev);
6678
6679         return err;
6680 }
6681
6682 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6683                             u32 seq, int flags,
6684                             struct cfg80211_registered_device *rdev,
6685                             struct wireless_dev *wdev,
6686                             struct cfg80211_internal_bss *intbss)
6687 {
6688         struct cfg80211_bss *res = &intbss->pub;
6689         const struct cfg80211_bss_ies *ies;
6690         void *hdr;
6691         struct nlattr *bss;
6692
6693         ASSERT_WDEV_LOCK(wdev);
6694
6695         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6696                              NL80211_CMD_NEW_SCAN_RESULTS);
6697         if (!hdr)
6698                 return -1;
6699
6700         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6701
6702         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6703                 goto nla_put_failure;
6704         if (wdev->netdev &&
6705             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6706                 goto nla_put_failure;
6707         if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
6708                 goto nla_put_failure;
6709
6710         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6711         if (!bss)
6712                 goto nla_put_failure;
6713         if ((!is_zero_ether_addr(res->bssid) &&
6714              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6715                 goto nla_put_failure;
6716
6717         rcu_read_lock();
6718         /* indicate whether we have probe response data or not */
6719         if (rcu_access_pointer(res->proberesp_ies) &&
6720             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
6721                 goto fail_unlock_rcu;
6722
6723         /* this pointer prefers to be pointed to probe response data
6724          * but is always valid
6725          */
6726         ies = rcu_dereference(res->ies);
6727         if (ies) {
6728                 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6729                         goto fail_unlock_rcu;
6730                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6731                                         ies->len, ies->data))
6732                         goto fail_unlock_rcu;
6733         }
6734
6735         /* and this pointer is always (unless driver didn't know) beacon data */
6736         ies = rcu_dereference(res->beacon_ies);
6737         if (ies && ies->from_beacon) {
6738                 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf))
6739                         goto fail_unlock_rcu;
6740                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6741                                         ies->len, ies->data))
6742                         goto fail_unlock_rcu;
6743         }
6744         rcu_read_unlock();
6745
6746         if (res->beacon_interval &&
6747             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6748                 goto nla_put_failure;
6749         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6750             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6751             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6752             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6753                         jiffies_to_msecs(jiffies - intbss->ts)))
6754                 goto nla_put_failure;
6755
6756         if (intbss->ts_boottime &&
6757             nla_put_u64(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
6758                         intbss->ts_boottime))
6759                 goto nla_put_failure;
6760
6761         switch (rdev->wiphy.signal_type) {
6762         case CFG80211_SIGNAL_TYPE_MBM:
6763                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6764                         goto nla_put_failure;
6765                 break;
6766         case CFG80211_SIGNAL_TYPE_UNSPEC:
6767                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6768                         goto nla_put_failure;
6769                 break;
6770         default:
6771                 break;
6772         }
6773
6774         switch (wdev->iftype) {
6775         case NL80211_IFTYPE_P2P_CLIENT:
6776         case NL80211_IFTYPE_STATION:
6777                 if (intbss == wdev->current_bss &&
6778                     nla_put_u32(msg, NL80211_BSS_STATUS,
6779                                 NL80211_BSS_STATUS_ASSOCIATED))
6780                         goto nla_put_failure;
6781                 break;
6782         case NL80211_IFTYPE_ADHOC:
6783                 if (intbss == wdev->current_bss &&
6784                     nla_put_u32(msg, NL80211_BSS_STATUS,
6785                                 NL80211_BSS_STATUS_IBSS_JOINED))
6786                         goto nla_put_failure;
6787                 break;
6788         default:
6789                 break;
6790         }
6791
6792         nla_nest_end(msg, bss);
6793
6794         genlmsg_end(msg, hdr);
6795         return 0;
6796
6797  fail_unlock_rcu:
6798         rcu_read_unlock();
6799  nla_put_failure:
6800         genlmsg_cancel(msg, hdr);
6801         return -EMSGSIZE;
6802 }
6803
6804 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6805 {
6806         struct cfg80211_registered_device *rdev;
6807         struct cfg80211_internal_bss *scan;
6808         struct wireless_dev *wdev;
6809         int start = cb->args[2], idx = 0;
6810         int err;
6811
6812         rtnl_lock();
6813         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6814         if (err) {
6815                 rtnl_unlock();
6816                 return err;
6817         }
6818
6819         wdev_lock(wdev);
6820         spin_lock_bh(&rdev->bss_lock);
6821         cfg80211_bss_expire(rdev);
6822
6823         cb->seq = rdev->bss_generation;
6824
6825         list_for_each_entry(scan, &rdev->bss_list, list) {
6826                 if (++idx <= start)
6827                         continue;
6828                 if (nl80211_send_bss(skb, cb,
6829                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6830                                 rdev, wdev, scan) < 0) {
6831                         idx--;
6832                         break;
6833                 }
6834         }
6835
6836         spin_unlock_bh(&rdev->bss_lock);
6837         wdev_unlock(wdev);
6838
6839         cb->args[2] = idx;
6840         rtnl_unlock();
6841
6842         return skb->len;
6843 }
6844
6845 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6846                                int flags, struct net_device *dev,
6847                                bool allow_radio_stats,
6848                                struct survey_info *survey)
6849 {
6850         void *hdr;
6851         struct nlattr *infoattr;
6852
6853         /* skip radio stats if userspace didn't request them */
6854         if (!survey->channel && !allow_radio_stats)
6855                 return 0;
6856
6857         hdr = nl80211hdr_put(msg, portid, seq, flags,
6858                              NL80211_CMD_NEW_SURVEY_RESULTS);
6859         if (!hdr)
6860                 return -ENOMEM;
6861
6862         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6863                 goto nla_put_failure;
6864
6865         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6866         if (!infoattr)
6867                 goto nla_put_failure;
6868
6869         if (survey->channel &&
6870             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6871                         survey->channel->center_freq))
6872                 goto nla_put_failure;
6873
6874         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6875             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6876                 goto nla_put_failure;
6877         if ((survey->filled & SURVEY_INFO_IN_USE) &&
6878             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6879                 goto nla_put_failure;
6880         if ((survey->filled & SURVEY_INFO_TIME) &&
6881             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME,
6882                         survey->time))
6883                 goto nla_put_failure;
6884         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
6885             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_BUSY,
6886                         survey->time_busy))
6887                 goto nla_put_failure;
6888         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
6889             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
6890                         survey->time_ext_busy))
6891                 goto nla_put_failure;
6892         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
6893             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_RX,
6894                         survey->time_rx))
6895                 goto nla_put_failure;
6896         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
6897             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_TX,
6898                         survey->time_tx))
6899                 goto nla_put_failure;
6900         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
6901             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_SCAN,
6902                         survey->time_scan))
6903                 goto nla_put_failure;
6904
6905         nla_nest_end(msg, infoattr);
6906
6907         genlmsg_end(msg, hdr);
6908         return 0;
6909
6910  nla_put_failure:
6911         genlmsg_cancel(msg, hdr);
6912         return -EMSGSIZE;
6913 }
6914
6915 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
6916 {
6917         struct survey_info survey;
6918         struct cfg80211_registered_device *rdev;
6919         struct wireless_dev *wdev;
6920         int survey_idx = cb->args[2];
6921         int res;
6922         bool radio_stats;
6923
6924         rtnl_lock();
6925         res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6926         if (res)
6927                 goto out_err;
6928
6929         /* prepare_wdev_dump parsed the attributes */
6930         radio_stats = nl80211_fam.attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
6931
6932         if (!wdev->netdev) {
6933                 res = -EINVAL;
6934                 goto out_err;
6935         }
6936
6937         if (!rdev->ops->dump_survey) {
6938                 res = -EOPNOTSUPP;
6939                 goto out_err;
6940         }
6941
6942         while (1) {
6943                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
6944                 if (res == -ENOENT)
6945                         break;
6946                 if (res)
6947                         goto out_err;
6948
6949                 /* don't send disabled channels, but do send non-channel data */
6950                 if (survey.channel &&
6951                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
6952                         survey_idx++;
6953                         continue;
6954                 }
6955
6956                 if (nl80211_send_survey(skb,
6957                                 NETLINK_CB(cb->skb).portid,
6958                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6959                                 wdev->netdev, radio_stats, &survey) < 0)
6960                         goto out;
6961                 survey_idx++;
6962         }
6963
6964  out:
6965         cb->args[2] = survey_idx;
6966         res = skb->len;
6967  out_err:
6968         rtnl_unlock();
6969         return res;
6970 }
6971
6972 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6973 {
6974         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6975                                   NL80211_WPA_VERSION_2));
6976 }
6977
6978 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6979 {
6980         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6981         struct net_device *dev = info->user_ptr[1];
6982         struct ieee80211_channel *chan;
6983         const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6984         int err, ssid_len, ie_len = 0, sae_data_len = 0;
6985         enum nl80211_auth_type auth_type;
6986         struct key_parse key;
6987         bool local_state_change;
6988
6989         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6990                 return -EINVAL;
6991
6992         if (!info->attrs[NL80211_ATTR_MAC])
6993                 return -EINVAL;
6994
6995         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6996                 return -EINVAL;
6997
6998         if (!info->attrs[NL80211_ATTR_SSID])
6999                 return -EINVAL;
7000
7001         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7002                 return -EINVAL;
7003
7004         err = nl80211_parse_key(info, &key);
7005         if (err)
7006                 return err;
7007
7008         if (key.idx >= 0) {
7009                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
7010                         return -EINVAL;
7011                 if (!key.p.key || !key.p.key_len)
7012                         return -EINVAL;
7013                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
7014                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
7015                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
7016                      key.p.key_len != WLAN_KEY_LEN_WEP104))
7017                         return -EINVAL;
7018                 if (key.idx > 4)
7019                         return -EINVAL;
7020         } else {
7021                 key.p.key_len = 0;
7022                 key.p.key = NULL;
7023         }
7024
7025         if (key.idx >= 0) {
7026                 int i;
7027                 bool ok = false;
7028                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
7029                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
7030                                 ok = true;
7031                                 break;
7032                         }
7033                 }
7034                 if (!ok)
7035                         return -EINVAL;
7036         }
7037
7038         if (!rdev->ops->auth)
7039                 return -EOPNOTSUPP;
7040
7041         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7042             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7043                 return -EOPNOTSUPP;
7044
7045         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7046         chan = nl80211_get_valid_chan(&rdev->wiphy,
7047                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7048         if (!chan)
7049                 return -EINVAL;
7050
7051         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7052         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7053
7054         if (info->attrs[NL80211_ATTR_IE]) {
7055                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7056                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7057         }
7058
7059         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7060         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
7061                 return -EINVAL;
7062
7063         if (auth_type == NL80211_AUTHTYPE_SAE &&
7064             !info->attrs[NL80211_ATTR_SAE_DATA])
7065                 return -EINVAL;
7066
7067         if (info->attrs[NL80211_ATTR_SAE_DATA]) {
7068                 if (auth_type != NL80211_AUTHTYPE_SAE)
7069                         return -EINVAL;
7070                 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
7071                 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
7072                 /* need to include at least Auth Transaction and Status Code */
7073                 if (sae_data_len < 4)
7074                         return -EINVAL;
7075         }
7076
7077         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7078
7079         /*
7080          * Since we no longer track auth state, ignore
7081          * requests to only change local state.
7082          */
7083         if (local_state_change)
7084                 return 0;
7085
7086         wdev_lock(dev->ieee80211_ptr);
7087         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
7088                                  ssid, ssid_len, ie, ie_len,
7089                                  key.p.key, key.p.key_len, key.idx,
7090                                  sae_data, sae_data_len);
7091         wdev_unlock(dev->ieee80211_ptr);
7092         return err;
7093 }
7094
7095 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
7096                                    struct genl_info *info,
7097                                    struct cfg80211_crypto_settings *settings,
7098                                    int cipher_limit)
7099 {
7100         memset(settings, 0, sizeof(*settings));
7101
7102         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
7103
7104         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
7105                 u16 proto;
7106                 proto = nla_get_u16(
7107                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
7108                 settings->control_port_ethertype = cpu_to_be16(proto);
7109                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
7110                     proto != ETH_P_PAE)
7111                         return -EINVAL;
7112                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
7113                         settings->control_port_no_encrypt = true;
7114         } else
7115                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
7116
7117         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
7118                 void *data;
7119                 int len, i;
7120
7121                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7122                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7123                 settings->n_ciphers_pairwise = len / sizeof(u32);
7124
7125                 if (len % sizeof(u32))
7126                         return -EINVAL;
7127
7128                 if (settings->n_ciphers_pairwise > cipher_limit)
7129                         return -EINVAL;
7130
7131                 memcpy(settings->ciphers_pairwise, data, len);
7132
7133                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
7134                         if (!cfg80211_supported_cipher_suite(
7135                                         &rdev->wiphy,
7136                                         settings->ciphers_pairwise[i]))
7137                                 return -EINVAL;
7138         }
7139
7140         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
7141                 settings->cipher_group =
7142                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
7143                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
7144                                                      settings->cipher_group))
7145                         return -EINVAL;
7146         }
7147
7148         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
7149                 settings->wpa_versions =
7150                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
7151                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
7152                         return -EINVAL;
7153         }
7154
7155         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
7156                 void *data;
7157                 int len;
7158
7159                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
7160                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
7161                 settings->n_akm_suites = len / sizeof(u32);
7162
7163                 if (len % sizeof(u32))
7164                         return -EINVAL;
7165
7166                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
7167                         return -EINVAL;
7168
7169                 memcpy(settings->akm_suites, data, len);
7170         }
7171
7172         return 0;
7173 }
7174
7175 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
7176 {
7177         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7178         struct net_device *dev = info->user_ptr[1];
7179         struct ieee80211_channel *chan;
7180         struct cfg80211_assoc_request req = {};
7181         const u8 *bssid, *ssid;
7182         int err, ssid_len = 0;
7183
7184         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7185                 return -EINVAL;
7186
7187         if (!info->attrs[NL80211_ATTR_MAC] ||
7188             !info->attrs[NL80211_ATTR_SSID] ||
7189             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
7190                 return -EINVAL;
7191
7192         if (!rdev->ops->assoc)
7193                 return -EOPNOTSUPP;
7194
7195         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7196             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7197                 return -EOPNOTSUPP;
7198
7199         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7200
7201         chan = nl80211_get_valid_chan(&rdev->wiphy,
7202                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7203         if (!chan)
7204                 return -EINVAL;
7205
7206         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7207         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7208
7209         if (info->attrs[NL80211_ATTR_IE]) {
7210                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7211                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7212         }
7213
7214         if (info->attrs[NL80211_ATTR_USE_MFP]) {
7215                 enum nl80211_mfp mfp =
7216                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7217                 if (mfp == NL80211_MFP_REQUIRED)
7218                         req.use_mfp = true;
7219                 else if (mfp != NL80211_MFP_NO)
7220                         return -EINVAL;
7221         }
7222
7223         if (info->attrs[NL80211_ATTR_PREV_BSSID])
7224                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
7225
7226         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7227                 req.flags |= ASSOC_REQ_DISABLE_HT;
7228
7229         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7230                 memcpy(&req.ht_capa_mask,
7231                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7232                        sizeof(req.ht_capa_mask));
7233
7234         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7235                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7236                         return -EINVAL;
7237                 memcpy(&req.ht_capa,
7238                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7239                        sizeof(req.ht_capa));
7240         }
7241
7242         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7243                 req.flags |= ASSOC_REQ_DISABLE_VHT;
7244
7245         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7246                 memcpy(&req.vht_capa_mask,
7247                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7248                        sizeof(req.vht_capa_mask));
7249
7250         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7251                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7252                         return -EINVAL;
7253                 memcpy(&req.vht_capa,
7254                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7255                        sizeof(req.vht_capa));
7256         }
7257
7258         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7259                 if (!(rdev->wiphy.features &
7260                       NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7261                     !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7262                         return -EINVAL;
7263                 req.flags |= ASSOC_REQ_USE_RRM;
7264         }
7265
7266         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
7267         if (!err) {
7268                 wdev_lock(dev->ieee80211_ptr);
7269                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
7270                                           ssid, ssid_len, &req);
7271                 wdev_unlock(dev->ieee80211_ptr);
7272         }
7273
7274         return err;
7275 }
7276
7277 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
7278 {
7279         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7280         struct net_device *dev = info->user_ptr[1];
7281         const u8 *ie = NULL, *bssid;
7282         int ie_len = 0, err;
7283         u16 reason_code;
7284         bool local_state_change;
7285
7286         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7287                 return -EINVAL;
7288
7289         if (!info->attrs[NL80211_ATTR_MAC])
7290                 return -EINVAL;
7291
7292         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7293                 return -EINVAL;
7294
7295         if (!rdev->ops->deauth)
7296                 return -EOPNOTSUPP;
7297
7298         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7299             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7300                 return -EOPNOTSUPP;
7301
7302         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7303
7304         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7305         if (reason_code == 0) {
7306                 /* Reason Code 0 is reserved */
7307                 return -EINVAL;
7308         }
7309
7310         if (info->attrs[NL80211_ATTR_IE]) {
7311                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7312                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7313         }
7314
7315         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7316
7317         wdev_lock(dev->ieee80211_ptr);
7318         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
7319                                    local_state_change);
7320         wdev_unlock(dev->ieee80211_ptr);
7321         return err;
7322 }
7323
7324 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
7325 {
7326         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7327         struct net_device *dev = info->user_ptr[1];
7328         const u8 *ie = NULL, *bssid;
7329         int ie_len = 0, err;
7330         u16 reason_code;
7331         bool local_state_change;
7332
7333         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7334                 return -EINVAL;
7335
7336         if (!info->attrs[NL80211_ATTR_MAC])
7337                 return -EINVAL;
7338
7339         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7340                 return -EINVAL;
7341
7342         if (!rdev->ops->disassoc)
7343                 return -EOPNOTSUPP;
7344
7345         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7346             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7347                 return -EOPNOTSUPP;
7348
7349         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7350
7351         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7352         if (reason_code == 0) {
7353                 /* Reason Code 0 is reserved */
7354                 return -EINVAL;
7355         }
7356
7357         if (info->attrs[NL80211_ATTR_IE]) {
7358                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7359                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7360         }
7361
7362         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7363
7364         wdev_lock(dev->ieee80211_ptr);
7365         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
7366                                      local_state_change);
7367         wdev_unlock(dev->ieee80211_ptr);
7368         return err;
7369 }
7370
7371 static bool
7372 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
7373                          int mcast_rate[IEEE80211_NUM_BANDS],
7374                          int rateval)
7375 {
7376         struct wiphy *wiphy = &rdev->wiphy;
7377         bool found = false;
7378         int band, i;
7379
7380         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
7381                 struct ieee80211_supported_band *sband;
7382
7383                 sband = wiphy->bands[band];
7384                 if (!sband)
7385                         continue;
7386
7387                 for (i = 0; i < sband->n_bitrates; i++) {
7388                         if (sband->bitrates[i].bitrate == rateval) {
7389                                 mcast_rate[band] = i + 1;
7390                                 found = true;
7391                                 break;
7392                         }
7393                 }
7394         }
7395
7396         return found;
7397 }
7398
7399 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
7400 {
7401         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7402         struct net_device *dev = info->user_ptr[1];
7403         struct cfg80211_ibss_params ibss;
7404         struct wiphy *wiphy;
7405         struct cfg80211_cached_keys *connkeys = NULL;
7406         int err;
7407
7408         memset(&ibss, 0, sizeof(ibss));
7409
7410         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7411                 return -EINVAL;
7412
7413         if (!info->attrs[NL80211_ATTR_SSID] ||
7414             !nla_len(info->attrs[NL80211_ATTR_SSID]))
7415                 return -EINVAL;
7416
7417         ibss.beacon_interval = 100;
7418
7419         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7420                 ibss.beacon_interval =
7421                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7422                 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
7423                         return -EINVAL;
7424         }
7425
7426         if (!rdev->ops->join_ibss)
7427                 return -EOPNOTSUPP;
7428
7429         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7430                 return -EOPNOTSUPP;
7431
7432         wiphy = &rdev->wiphy;
7433
7434         if (info->attrs[NL80211_ATTR_MAC]) {
7435                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7436
7437                 if (!is_valid_ether_addr(ibss.bssid))
7438                         return -EINVAL;
7439         }
7440         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7441         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7442
7443         if (info->attrs[NL80211_ATTR_IE]) {
7444                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7445                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7446         }
7447
7448         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
7449         if (err)
7450                 return err;
7451
7452         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
7453                                      NL80211_IFTYPE_ADHOC))
7454                 return -EINVAL;
7455
7456         switch (ibss.chandef.width) {
7457         case NL80211_CHAN_WIDTH_5:
7458         case NL80211_CHAN_WIDTH_10:
7459         case NL80211_CHAN_WIDTH_20_NOHT:
7460                 break;
7461         case NL80211_CHAN_WIDTH_20:
7462         case NL80211_CHAN_WIDTH_40:
7463                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
7464                         return -EINVAL;
7465                 break;
7466         case NL80211_CHAN_WIDTH_80:
7467         case NL80211_CHAN_WIDTH_80P80:
7468         case NL80211_CHAN_WIDTH_160:
7469                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
7470                         return -EINVAL;
7471                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
7472                                              NL80211_EXT_FEATURE_VHT_IBSS))
7473                         return -EINVAL;
7474                 break;
7475         default:
7476                 return -EINVAL;
7477         }
7478
7479         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
7480         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
7481
7482         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7483                 u8 *rates =
7484                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7485                 int n_rates =
7486                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7487                 struct ieee80211_supported_band *sband =
7488                         wiphy->bands[ibss.chandef.chan->band];
7489
7490                 err = ieee80211_get_ratemask(sband, rates, n_rates,
7491                                              &ibss.basic_rates);
7492                 if (err)
7493                         return err;
7494         }
7495
7496         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7497                 memcpy(&ibss.ht_capa_mask,
7498                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7499                        sizeof(ibss.ht_capa_mask));
7500
7501         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7502                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7503                         return -EINVAL;
7504                 memcpy(&ibss.ht_capa,
7505                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7506                        sizeof(ibss.ht_capa));
7507         }
7508
7509         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7510             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
7511                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7512                 return -EINVAL;
7513
7514         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7515                 bool no_ht = false;
7516
7517                 connkeys = nl80211_parse_connkeys(rdev,
7518                                           info->attrs[NL80211_ATTR_KEYS],
7519                                           &no_ht);
7520                 if (IS_ERR(connkeys))
7521                         return PTR_ERR(connkeys);
7522
7523                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7524                     no_ht) {
7525                         kfree(connkeys);
7526                         return -EINVAL;
7527                 }
7528         }
7529
7530         ibss.control_port =
7531                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7532
7533         ibss.userspace_handles_dfs =
7534                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7535
7536         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7537         if (err)
7538                 kzfree(connkeys);
7539         return err;
7540 }
7541
7542 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7543 {
7544         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7545         struct net_device *dev = info->user_ptr[1];
7546
7547         if (!rdev->ops->leave_ibss)
7548                 return -EOPNOTSUPP;
7549
7550         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7551                 return -EOPNOTSUPP;
7552
7553         return cfg80211_leave_ibss(rdev, dev, false);
7554 }
7555
7556 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7557 {
7558         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7559         struct net_device *dev = info->user_ptr[1];
7560         int mcast_rate[IEEE80211_NUM_BANDS];
7561         u32 nla_rate;
7562         int err;
7563
7564         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7565             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
7566             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
7567                 return -EOPNOTSUPP;
7568
7569         if (!rdev->ops->set_mcast_rate)
7570                 return -EOPNOTSUPP;
7571
7572         memset(mcast_rate, 0, sizeof(mcast_rate));
7573
7574         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7575                 return -EINVAL;
7576
7577         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7578         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7579                 return -EINVAL;
7580
7581         err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
7582
7583         return err;
7584 }
7585
7586 static struct sk_buff *
7587 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7588                             struct wireless_dev *wdev, int approxlen,
7589                             u32 portid, u32 seq, enum nl80211_commands cmd,
7590                             enum nl80211_attrs attr,
7591                             const struct nl80211_vendor_cmd_info *info,
7592                             gfp_t gfp)
7593 {
7594         struct sk_buff *skb;
7595         void *hdr;
7596         struct nlattr *data;
7597
7598         skb = nlmsg_new(approxlen + 100, gfp);
7599         if (!skb)
7600                 return NULL;
7601
7602         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7603         if (!hdr) {
7604                 kfree_skb(skb);
7605                 return NULL;
7606         }
7607
7608         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
7609                 goto nla_put_failure;
7610
7611         if (info) {
7612                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
7613                                 info->vendor_id))
7614                         goto nla_put_failure;
7615                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
7616                                 info->subcmd))
7617                         goto nla_put_failure;
7618         }
7619
7620         if (wdev) {
7621                 if (nla_put_u64(skb, NL80211_ATTR_WDEV,
7622                                 wdev_id(wdev)))
7623                         goto nla_put_failure;
7624                 if (wdev->netdev &&
7625                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
7626                                 wdev->netdev->ifindex))
7627                         goto nla_put_failure;
7628         }
7629
7630         data = nla_nest_start(skb, attr);
7631
7632         ((void **)skb->cb)[0] = rdev;
7633         ((void **)skb->cb)[1] = hdr;
7634         ((void **)skb->cb)[2] = data;
7635
7636         return skb;
7637
7638  nla_put_failure:
7639         kfree_skb(skb);
7640         return NULL;
7641 }
7642
7643 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
7644                                            struct wireless_dev *wdev,
7645                                            enum nl80211_commands cmd,
7646                                            enum nl80211_attrs attr,
7647                                            int vendor_event_idx,
7648                                            int approxlen, gfp_t gfp)
7649 {
7650         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
7651         const struct nl80211_vendor_cmd_info *info;
7652
7653         switch (cmd) {
7654         case NL80211_CMD_TESTMODE:
7655                 if (WARN_ON(vendor_event_idx != -1))
7656                         return NULL;
7657                 info = NULL;
7658                 break;
7659         case NL80211_CMD_VENDOR:
7660                 if (WARN_ON(vendor_event_idx < 0 ||
7661                             vendor_event_idx >= wiphy->n_vendor_events))
7662                         return NULL;
7663                 info = &wiphy->vendor_events[vendor_event_idx];
7664                 break;
7665         default:
7666                 WARN_ON(1);
7667                 return NULL;
7668         }
7669
7670         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
7671                                            cmd, attr, info, gfp);
7672 }
7673 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
7674
7675 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
7676 {
7677         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
7678         void *hdr = ((void **)skb->cb)[1];
7679         struct nlattr *data = ((void **)skb->cb)[2];
7680         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
7681
7682         /* clear CB data for netlink core to own from now on */
7683         memset(skb->cb, 0, sizeof(skb->cb));
7684
7685         nla_nest_end(skb, data);
7686         genlmsg_end(skb, hdr);
7687
7688         if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
7689                 mcgrp = NL80211_MCGRP_VENDOR;
7690
7691         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
7692                                 mcgrp, gfp);
7693 }
7694 EXPORT_SYMBOL(__cfg80211_send_event_skb);
7695
7696 #ifdef CONFIG_NL80211_TESTMODE
7697 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
7698 {
7699         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7700         struct wireless_dev *wdev =
7701                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
7702         int err;
7703
7704         if (!rdev->ops->testmode_cmd)
7705                 return -EOPNOTSUPP;
7706
7707         if (IS_ERR(wdev)) {
7708                 err = PTR_ERR(wdev);
7709                 if (err != -EINVAL)
7710                         return err;
7711                 wdev = NULL;
7712         } else if (wdev->wiphy != &rdev->wiphy) {
7713                 return -EINVAL;
7714         }
7715
7716         if (!info->attrs[NL80211_ATTR_TESTDATA])
7717                 return -EINVAL;
7718
7719         rdev->cur_cmd_info = info;
7720         err = rdev_testmode_cmd(rdev, wdev,
7721                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7722                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7723         rdev->cur_cmd_info = NULL;
7724
7725         return err;
7726 }
7727
7728 static int nl80211_testmode_dump(struct sk_buff *skb,
7729                                  struct netlink_callback *cb)
7730 {
7731         struct cfg80211_registered_device *rdev;
7732         int err;
7733         long phy_idx;
7734         void *data = NULL;
7735         int data_len = 0;
7736
7737         rtnl_lock();
7738
7739         if (cb->args[0]) {
7740                 /*
7741                  * 0 is a valid index, but not valid for args[0],
7742                  * so we need to offset by 1.
7743                  */
7744                 phy_idx = cb->args[0] - 1;
7745         } else {
7746                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7747                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
7748                                   nl80211_policy);
7749                 if (err)
7750                         goto out_err;
7751
7752                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7753                                                   nl80211_fam.attrbuf);
7754                 if (IS_ERR(rdev)) {
7755                         err = PTR_ERR(rdev);
7756                         goto out_err;
7757                 }
7758                 phy_idx = rdev->wiphy_idx;
7759                 rdev = NULL;
7760
7761                 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7762                         cb->args[1] =
7763                                 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7764         }
7765
7766         if (cb->args[1]) {
7767                 data = nla_data((void *)cb->args[1]);
7768                 data_len = nla_len((void *)cb->args[1]);
7769         }
7770
7771         rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7772         if (!rdev) {
7773                 err = -ENOENT;
7774                 goto out_err;
7775         }
7776
7777         if (!rdev->ops->testmode_dump) {
7778                 err = -EOPNOTSUPP;
7779                 goto out_err;
7780         }
7781
7782         while (1) {
7783                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7784                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
7785                                            NL80211_CMD_TESTMODE);
7786                 struct nlattr *tmdata;
7787
7788                 if (!hdr)
7789                         break;
7790
7791                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7792                         genlmsg_cancel(skb, hdr);
7793                         break;
7794                 }
7795
7796                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7797                 if (!tmdata) {
7798                         genlmsg_cancel(skb, hdr);
7799                         break;
7800                 }
7801                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7802                 nla_nest_end(skb, tmdata);
7803
7804                 if (err == -ENOBUFS || err == -ENOENT) {
7805                         genlmsg_cancel(skb, hdr);
7806                         break;
7807                 } else if (err) {
7808                         genlmsg_cancel(skb, hdr);
7809                         goto out_err;
7810                 }
7811
7812                 genlmsg_end(skb, hdr);
7813         }
7814
7815         err = skb->len;
7816         /* see above */
7817         cb->args[0] = phy_idx + 1;
7818  out_err:
7819         rtnl_unlock();
7820         return err;
7821 }
7822 #endif
7823
7824 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7825 {
7826         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7827         struct net_device *dev = info->user_ptr[1];
7828         struct cfg80211_connect_params connect;
7829         struct wiphy *wiphy;
7830         struct cfg80211_cached_keys *connkeys = NULL;
7831         int err;
7832
7833         memset(&connect, 0, sizeof(connect));
7834
7835         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7836                 return -EINVAL;
7837
7838         if (!info->attrs[NL80211_ATTR_SSID] ||
7839             !nla_len(info->attrs[NL80211_ATTR_SSID]))
7840                 return -EINVAL;
7841
7842         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
7843                 connect.auth_type =
7844                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7845                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
7846                                              NL80211_CMD_CONNECT))
7847                         return -EINVAL;
7848         } else
7849                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
7850
7851         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
7852
7853         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
7854                                       NL80211_MAX_NR_CIPHER_SUITES);
7855         if (err)
7856                 return err;
7857
7858         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7859             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7860                 return -EOPNOTSUPP;
7861
7862         wiphy = &rdev->wiphy;
7863
7864         connect.bg_scan_period = -1;
7865         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
7866                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
7867                 connect.bg_scan_period =
7868                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
7869         }
7870
7871         if (info->attrs[NL80211_ATTR_MAC])
7872                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7873         else if (info->attrs[NL80211_ATTR_MAC_HINT])
7874                 connect.bssid_hint =
7875                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
7876         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7877         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7878
7879         if (info->attrs[NL80211_ATTR_IE]) {
7880                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7881                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7882         }
7883
7884         if (info->attrs[NL80211_ATTR_USE_MFP]) {
7885                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7886                 if (connect.mfp != NL80211_MFP_REQUIRED &&
7887                     connect.mfp != NL80211_MFP_NO)
7888                         return -EINVAL;
7889         } else {
7890                 connect.mfp = NL80211_MFP_NO;
7891         }
7892
7893         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7894                 connect.channel = nl80211_get_valid_chan(
7895                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7896                 if (!connect.channel)
7897                         return -EINVAL;
7898         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
7899                 connect.channel_hint = nl80211_get_valid_chan(
7900                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
7901                 if (!connect.channel_hint)
7902                         return -EINVAL;
7903         }
7904
7905         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7906                 connkeys = nl80211_parse_connkeys(rdev,
7907                                           info->attrs[NL80211_ATTR_KEYS], NULL);
7908                 if (IS_ERR(connkeys))
7909                         return PTR_ERR(connkeys);
7910         }
7911
7912         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7913                 connect.flags |= ASSOC_REQ_DISABLE_HT;
7914
7915         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7916                 memcpy(&connect.ht_capa_mask,
7917                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7918                        sizeof(connect.ht_capa_mask));
7919
7920         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7921                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7922                         kzfree(connkeys);
7923                         return -EINVAL;
7924                 }
7925                 memcpy(&connect.ht_capa,
7926                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7927                        sizeof(connect.ht_capa));
7928         }
7929
7930         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7931                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7932
7933         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7934                 memcpy(&connect.vht_capa_mask,
7935                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7936                        sizeof(connect.vht_capa_mask));
7937
7938         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7939                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7940                         kzfree(connkeys);
7941                         return -EINVAL;
7942                 }
7943                 memcpy(&connect.vht_capa,
7944                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7945                        sizeof(connect.vht_capa));
7946         }
7947
7948         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7949                 if (!(rdev->wiphy.features &
7950                       NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7951                     !(rdev->wiphy.features & NL80211_FEATURE_QUIET)) {
7952                         kzfree(connkeys);
7953                         return -EINVAL;
7954                 }
7955                 connect.flags |= ASSOC_REQ_USE_RRM;
7956         }
7957
7958         wdev_lock(dev->ieee80211_ptr);
7959         err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7960         wdev_unlock(dev->ieee80211_ptr);
7961         if (err)
7962                 kzfree(connkeys);
7963         return err;
7964 }
7965
7966 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7967 {
7968         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7969         struct net_device *dev = info->user_ptr[1];
7970         u16 reason;
7971         int ret;
7972
7973         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7974                 reason = WLAN_REASON_DEAUTH_LEAVING;
7975         else
7976                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7977
7978         if (reason == 0)
7979                 return -EINVAL;
7980
7981         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7982             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7983                 return -EOPNOTSUPP;
7984
7985         wdev_lock(dev->ieee80211_ptr);
7986         ret = cfg80211_disconnect(rdev, dev, reason, true);
7987         wdev_unlock(dev->ieee80211_ptr);
7988         return ret;
7989 }
7990
7991 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7992 {
7993         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7994         struct net *net;
7995         int err;
7996
7997         if (info->attrs[NL80211_ATTR_PID]) {
7998                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7999
8000                 net = get_net_ns_by_pid(pid);
8001         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
8002                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
8003
8004                 net = get_net_ns_by_fd(fd);
8005         } else {
8006                 return -EINVAL;
8007         }
8008
8009         if (IS_ERR(net))
8010                 return PTR_ERR(net);
8011
8012         err = 0;
8013
8014         /* check if anything to do */
8015         if (!net_eq(wiphy_net(&rdev->wiphy), net))
8016                 err = cfg80211_switch_netns(rdev, net);
8017
8018         put_net(net);
8019         return err;
8020 }
8021
8022 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
8023 {
8024         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8025         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
8026                         struct cfg80211_pmksa *pmksa) = NULL;
8027         struct net_device *dev = info->user_ptr[1];
8028         struct cfg80211_pmksa pmksa;
8029
8030         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
8031
8032         if (!info->attrs[NL80211_ATTR_MAC])
8033                 return -EINVAL;
8034
8035         if (!info->attrs[NL80211_ATTR_PMKID])
8036                 return -EINVAL;
8037
8038         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
8039         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8040
8041         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8042             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8043                 return -EOPNOTSUPP;
8044
8045         switch (info->genlhdr->cmd) {
8046         case NL80211_CMD_SET_PMKSA:
8047                 rdev_ops = rdev->ops->set_pmksa;
8048                 break;
8049         case NL80211_CMD_DEL_PMKSA:
8050                 rdev_ops = rdev->ops->del_pmksa;
8051                 break;
8052         default:
8053                 WARN_ON(1);
8054                 break;
8055         }
8056
8057         if (!rdev_ops)
8058                 return -EOPNOTSUPP;
8059
8060         return rdev_ops(&rdev->wiphy, dev, &pmksa);
8061 }
8062
8063 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
8064 {
8065         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8066         struct net_device *dev = info->user_ptr[1];
8067
8068         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8069             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8070                 return -EOPNOTSUPP;
8071
8072         if (!rdev->ops->flush_pmksa)
8073                 return -EOPNOTSUPP;
8074
8075         return rdev_flush_pmksa(rdev, dev);
8076 }
8077
8078 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
8079 {
8080         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8081         struct net_device *dev = info->user_ptr[1];
8082         u8 action_code, dialog_token;
8083         u32 peer_capability = 0;
8084         u16 status_code;
8085         u8 *peer;
8086         bool initiator;
8087
8088         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
8089             !rdev->ops->tdls_mgmt)
8090                 return -EOPNOTSUPP;
8091
8092         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
8093             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
8094             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
8095             !info->attrs[NL80211_ATTR_IE] ||
8096             !info->attrs[NL80211_ATTR_MAC])
8097                 return -EINVAL;
8098
8099         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
8100         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
8101         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
8102         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
8103         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
8104         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
8105                 peer_capability =
8106                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
8107
8108         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
8109                               dialog_token, status_code, peer_capability,
8110                               initiator,
8111                               nla_data(info->attrs[NL80211_ATTR_IE]),
8112                               nla_len(info->attrs[NL80211_ATTR_IE]));
8113 }
8114
8115 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
8116 {
8117         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8118         struct net_device *dev = info->user_ptr[1];
8119         enum nl80211_tdls_operation operation;
8120         u8 *peer;
8121
8122         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
8123             !rdev->ops->tdls_oper)
8124                 return -EOPNOTSUPP;
8125
8126         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
8127             !info->attrs[NL80211_ATTR_MAC])
8128                 return -EINVAL;
8129
8130         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
8131         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
8132
8133         return rdev_tdls_oper(rdev, dev, peer, operation);
8134 }
8135
8136 static int nl80211_remain_on_channel(struct sk_buff *skb,
8137                                      struct genl_info *info)
8138 {
8139         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8140         struct wireless_dev *wdev = info->user_ptr[1];
8141         struct cfg80211_chan_def chandef;
8142         struct sk_buff *msg;
8143         void *hdr;
8144         u64 cookie;
8145         u32 duration;
8146         int err;
8147
8148         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8149             !info->attrs[NL80211_ATTR_DURATION])
8150                 return -EINVAL;
8151
8152         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8153
8154         if (!rdev->ops->remain_on_channel ||
8155             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
8156                 return -EOPNOTSUPP;
8157
8158         /*
8159          * We should be on that channel for at least a minimum amount of
8160          * time (10ms) but no longer than the driver supports.
8161          */
8162         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8163             duration > rdev->wiphy.max_remain_on_channel_duration)
8164                 return -EINVAL;
8165
8166         err = nl80211_parse_chandef(rdev, info, &chandef);
8167         if (err)
8168                 return err;
8169
8170         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8171         if (!msg)
8172                 return -ENOMEM;
8173
8174         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8175                              NL80211_CMD_REMAIN_ON_CHANNEL);
8176         if (!hdr) {
8177                 err = -ENOBUFS;
8178                 goto free_msg;
8179         }
8180
8181         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
8182                                      duration, &cookie);
8183
8184         if (err)
8185                 goto free_msg;
8186
8187         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8188                 goto nla_put_failure;
8189
8190         genlmsg_end(msg, hdr);
8191
8192         return genlmsg_reply(msg, info);
8193
8194  nla_put_failure:
8195         err = -ENOBUFS;
8196  free_msg:
8197         nlmsg_free(msg);
8198         return err;
8199 }
8200
8201 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
8202                                             struct genl_info *info)
8203 {
8204         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8205         struct wireless_dev *wdev = info->user_ptr[1];
8206         u64 cookie;
8207
8208         if (!info->attrs[NL80211_ATTR_COOKIE])
8209                 return -EINVAL;
8210
8211         if (!rdev->ops->cancel_remain_on_channel)
8212                 return -EOPNOTSUPP;
8213
8214         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8215
8216         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
8217 }
8218
8219 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
8220                            u8 *rates, u8 rates_len)
8221 {
8222         u8 i;
8223         u32 mask = 0;
8224
8225         for (i = 0; i < rates_len; i++) {
8226                 int rate = (rates[i] & 0x7f) * 5;
8227                 int ridx;
8228                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
8229                         struct ieee80211_rate *srate =
8230                                 &sband->bitrates[ridx];
8231                         if (rate == srate->bitrate) {
8232                                 mask |= 1 << ridx;
8233                                 break;
8234                         }
8235                 }
8236                 if (ridx == sband->n_bitrates)
8237                         return 0; /* rate not found */
8238         }
8239
8240         return mask;
8241 }
8242
8243 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
8244                                u8 *rates, u8 rates_len,
8245                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
8246 {
8247         u8 i;
8248
8249         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
8250
8251         for (i = 0; i < rates_len; i++) {
8252                 int ridx, rbit;
8253
8254                 ridx = rates[i] / 8;
8255                 rbit = BIT(rates[i] % 8);
8256
8257                 /* check validity */
8258                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
8259                         return false;
8260
8261                 /* check availability */
8262                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
8263                         mcs[ridx] |= rbit;
8264                 else
8265                         return false;
8266         }
8267
8268         return true;
8269 }
8270
8271 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
8272 {
8273         u16 mcs_mask = 0;
8274
8275         switch (vht_mcs_map) {
8276         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
8277                 break;
8278         case IEEE80211_VHT_MCS_SUPPORT_0_7:
8279                 mcs_mask = 0x00FF;
8280                 break;
8281         case IEEE80211_VHT_MCS_SUPPORT_0_8:
8282                 mcs_mask = 0x01FF;
8283                 break;
8284         case IEEE80211_VHT_MCS_SUPPORT_0_9:
8285                 mcs_mask = 0x03FF;
8286                 break;
8287         default:
8288                 break;
8289         }
8290
8291         return mcs_mask;
8292 }
8293
8294 static void vht_build_mcs_mask(u16 vht_mcs_map,
8295                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
8296 {
8297         u8 nss;
8298
8299         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
8300                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
8301                 vht_mcs_map >>= 2;
8302         }
8303 }
8304
8305 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
8306                              struct nl80211_txrate_vht *txrate,
8307                              u16 mcs[NL80211_VHT_NSS_MAX])
8308 {
8309         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8310         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
8311         u8 i;
8312
8313         if (!sband->vht_cap.vht_supported)
8314                 return false;
8315
8316         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
8317
8318         /* Build vht_mcs_mask from VHT capabilities */
8319         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
8320
8321         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
8322                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
8323                         mcs[i] = txrate->mcs[i];
8324                 else
8325                         return false;
8326         }
8327
8328         return true;
8329 }
8330
8331 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
8332         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
8333                                     .len = NL80211_MAX_SUPP_RATES },
8334         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
8335                                 .len = NL80211_MAX_SUPP_HT_RATES },
8336         [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
8337         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
8338 };
8339
8340 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
8341                                        struct genl_info *info)
8342 {
8343         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
8344         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8345         struct cfg80211_bitrate_mask mask;
8346         int rem, i;
8347         struct net_device *dev = info->user_ptr[1];
8348         struct nlattr *tx_rates;
8349         struct ieee80211_supported_band *sband;
8350         u16 vht_tx_mcs_map;
8351
8352         if (!rdev->ops->set_bitrate_mask)
8353                 return -EOPNOTSUPP;
8354
8355         memset(&mask, 0, sizeof(mask));
8356         /* Default to all rates enabled */
8357         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
8358                 sband = rdev->wiphy.bands[i];
8359
8360                 if (!sband)
8361                         continue;
8362
8363                 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
8364                 memcpy(mask.control[i].ht_mcs,
8365                        sband->ht_cap.mcs.rx_mask,
8366                        sizeof(mask.control[i].ht_mcs));
8367
8368                 if (!sband->vht_cap.vht_supported)
8369                         continue;
8370
8371                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8372                 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
8373         }
8374
8375         /* if no rates are given set it back to the defaults */
8376         if (!info->attrs[NL80211_ATTR_TX_RATES])
8377                 goto out;
8378
8379         /*
8380          * The nested attribute uses enum nl80211_band as the index. This maps
8381          * directly to the enum ieee80211_band values used in cfg80211.
8382          */
8383         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
8384         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
8385                 enum ieee80211_band band = nla_type(tx_rates);
8386                 int err;
8387
8388                 if (band < 0 || band >= IEEE80211_NUM_BANDS)
8389                         return -EINVAL;
8390                 sband = rdev->wiphy.bands[band];
8391                 if (sband == NULL)
8392                         return -EINVAL;
8393                 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
8394                                 nla_len(tx_rates), nl80211_txattr_policy);
8395                 if (err)
8396                         return err;
8397                 if (tb[NL80211_TXRATE_LEGACY]) {
8398                         mask.control[band].legacy = rateset_to_mask(
8399                                 sband,
8400                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
8401                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
8402                         if ((mask.control[band].legacy == 0) &&
8403                             nla_len(tb[NL80211_TXRATE_LEGACY]))
8404                                 return -EINVAL;
8405                 }
8406                 if (tb[NL80211_TXRATE_HT]) {
8407                         if (!ht_rateset_to_mask(
8408                                         sband,
8409                                         nla_data(tb[NL80211_TXRATE_HT]),
8410                                         nla_len(tb[NL80211_TXRATE_HT]),
8411                                         mask.control[band].ht_mcs))
8412                                 return -EINVAL;
8413                 }
8414                 if (tb[NL80211_TXRATE_VHT]) {
8415                         if (!vht_set_mcs_mask(
8416                                         sband,
8417                                         nla_data(tb[NL80211_TXRATE_VHT]),
8418                                         mask.control[band].vht_mcs))
8419                                 return -EINVAL;
8420                 }
8421                 if (tb[NL80211_TXRATE_GI]) {
8422                         mask.control[band].gi =
8423                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
8424                         if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
8425                                 return -EINVAL;
8426                 }
8427
8428                 if (mask.control[band].legacy == 0) {
8429                         /* don't allow empty legacy rates if HT or VHT
8430                          * are not even supported.
8431                          */
8432                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
8433                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
8434                                 return -EINVAL;
8435
8436                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
8437                                 if (mask.control[band].ht_mcs[i])
8438                                         goto out;
8439
8440                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
8441                                 if (mask.control[band].vht_mcs[i])
8442                                         goto out;
8443
8444                         /* legacy and mcs rates may not be both empty */
8445                         return -EINVAL;
8446                 }
8447         }
8448
8449 out:
8450         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
8451 }
8452
8453 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
8454 {
8455         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8456         struct wireless_dev *wdev = info->user_ptr[1];
8457         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
8458
8459         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
8460                 return -EINVAL;
8461
8462         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
8463                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
8464
8465         switch (wdev->iftype) {
8466         case NL80211_IFTYPE_STATION:
8467         case NL80211_IFTYPE_ADHOC:
8468         case NL80211_IFTYPE_P2P_CLIENT:
8469         case NL80211_IFTYPE_AP:
8470         case NL80211_IFTYPE_AP_VLAN:
8471         case NL80211_IFTYPE_MESH_POINT:
8472         case NL80211_IFTYPE_P2P_GO:
8473         case NL80211_IFTYPE_P2P_DEVICE:
8474                 break;
8475         default:
8476                 return -EOPNOTSUPP;
8477         }
8478
8479         /* not much point in registering if we can't reply */
8480         if (!rdev->ops->mgmt_tx)
8481                 return -EOPNOTSUPP;
8482
8483         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
8484                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
8485                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
8486 }
8487
8488 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
8489 {
8490         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8491         struct wireless_dev *wdev = info->user_ptr[1];
8492         struct cfg80211_chan_def chandef;
8493         int err;
8494         void *hdr = NULL;
8495         u64 cookie;
8496         struct sk_buff *msg = NULL;
8497         struct cfg80211_mgmt_tx_params params = {
8498                 .dont_wait_for_ack =
8499                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
8500         };
8501
8502         if (!info->attrs[NL80211_ATTR_FRAME])
8503                 return -EINVAL;
8504
8505         if (!rdev->ops->mgmt_tx)
8506                 return -EOPNOTSUPP;
8507
8508         switch (wdev->iftype) {
8509         case NL80211_IFTYPE_P2P_DEVICE:
8510                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8511                         return -EINVAL;
8512         case NL80211_IFTYPE_STATION:
8513         case NL80211_IFTYPE_ADHOC:
8514         case NL80211_IFTYPE_P2P_CLIENT:
8515         case NL80211_IFTYPE_AP:
8516         case NL80211_IFTYPE_AP_VLAN:
8517         case NL80211_IFTYPE_MESH_POINT:
8518         case NL80211_IFTYPE_P2P_GO:
8519                 break;
8520         default:
8521                 return -EOPNOTSUPP;
8522         }
8523
8524         if (info->attrs[NL80211_ATTR_DURATION]) {
8525                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8526                         return -EINVAL;
8527                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8528
8529                 /*
8530                  * We should wait on the channel for at least a minimum amount
8531                  * of time (10ms) but no longer than the driver supports.
8532                  */
8533                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8534                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
8535                         return -EINVAL;
8536
8537         }
8538
8539         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8540
8541         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8542                 return -EINVAL;
8543
8544         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8545
8546         /* get the channel if any has been specified, otherwise pass NULL to
8547          * the driver. The latter will use the current one
8548          */
8549         chandef.chan = NULL;
8550         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8551                 err = nl80211_parse_chandef(rdev, info, &chandef);
8552                 if (err)
8553                         return err;
8554         }
8555
8556         if (!chandef.chan && params.offchan)
8557                 return -EINVAL;
8558
8559         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8560         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8561
8562         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8563                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8564                 int i;
8565
8566                 if (len % sizeof(u16))
8567                         return -EINVAL;
8568
8569                 params.n_csa_offsets = len / sizeof(u16);
8570                 params.csa_offsets =
8571                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8572
8573                 /* check that all the offsets fit the frame */
8574                 for (i = 0; i < params.n_csa_offsets; i++) {
8575                         if (params.csa_offsets[i] >= params.len)
8576                                 return -EINVAL;
8577                 }
8578         }
8579
8580         if (!params.dont_wait_for_ack) {
8581                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8582                 if (!msg)
8583                         return -ENOMEM;
8584
8585                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8586                                      NL80211_CMD_FRAME);
8587                 if (!hdr) {
8588                         err = -ENOBUFS;
8589                         goto free_msg;
8590                 }
8591         }
8592
8593         params.chan = chandef.chan;
8594         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
8595         if (err)
8596                 goto free_msg;
8597
8598         if (msg) {
8599                 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8600                         goto nla_put_failure;
8601
8602                 genlmsg_end(msg, hdr);
8603                 return genlmsg_reply(msg, info);
8604         }
8605
8606         return 0;
8607
8608  nla_put_failure:
8609         err = -ENOBUFS;
8610  free_msg:
8611         nlmsg_free(msg);
8612         return err;
8613 }
8614
8615 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
8616 {
8617         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8618         struct wireless_dev *wdev = info->user_ptr[1];
8619         u64 cookie;
8620
8621         if (!info->attrs[NL80211_ATTR_COOKIE])
8622                 return -EINVAL;
8623
8624         if (!rdev->ops->mgmt_tx_cancel_wait)
8625                 return -EOPNOTSUPP;
8626
8627         switch (wdev->iftype) {
8628         case NL80211_IFTYPE_STATION:
8629         case NL80211_IFTYPE_ADHOC:
8630         case NL80211_IFTYPE_P2P_CLIENT:
8631         case NL80211_IFTYPE_AP:
8632         case NL80211_IFTYPE_AP_VLAN:
8633         case NL80211_IFTYPE_P2P_GO:
8634         case NL80211_IFTYPE_P2P_DEVICE:
8635                 break;
8636         default:
8637                 return -EOPNOTSUPP;
8638         }
8639
8640         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8641
8642         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
8643 }
8644
8645 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
8646 {
8647         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8648         struct wireless_dev *wdev;
8649         struct net_device *dev = info->user_ptr[1];
8650         u8 ps_state;
8651         bool state;
8652         int err;
8653
8654         if (!info->attrs[NL80211_ATTR_PS_STATE])
8655                 return -EINVAL;
8656
8657         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
8658
8659         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
8660                 return -EINVAL;
8661
8662         wdev = dev->ieee80211_ptr;
8663
8664         if (!rdev->ops->set_power_mgmt)
8665                 return -EOPNOTSUPP;
8666
8667         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
8668
8669         if (state == wdev->ps)
8670                 return 0;
8671
8672         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
8673         if (!err)
8674                 wdev->ps = state;
8675         return err;
8676 }
8677
8678 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
8679 {
8680         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8681         enum nl80211_ps_state ps_state;
8682         struct wireless_dev *wdev;
8683         struct net_device *dev = info->user_ptr[1];
8684         struct sk_buff *msg;
8685         void *hdr;
8686         int err;
8687
8688         wdev = dev->ieee80211_ptr;
8689
8690         if (!rdev->ops->set_power_mgmt)
8691                 return -EOPNOTSUPP;
8692
8693         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8694         if (!msg)
8695                 return -ENOMEM;
8696
8697         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8698                              NL80211_CMD_GET_POWER_SAVE);
8699         if (!hdr) {
8700                 err = -ENOBUFS;
8701                 goto free_msg;
8702         }
8703
8704         if (wdev->ps)
8705                 ps_state = NL80211_PS_ENABLED;
8706         else
8707                 ps_state = NL80211_PS_DISABLED;
8708
8709         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
8710                 goto nla_put_failure;
8711
8712         genlmsg_end(msg, hdr);
8713         return genlmsg_reply(msg, info);
8714
8715  nla_put_failure:
8716         err = -ENOBUFS;
8717  free_msg:
8718         nlmsg_free(msg);
8719         return err;
8720 }
8721
8722 static const struct nla_policy
8723 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
8724         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8725         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8726         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8727         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8728         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8729         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8730 };
8731
8732 static int nl80211_set_cqm_txe(struct genl_info *info,
8733                                u32 rate, u32 pkts, u32 intvl)
8734 {
8735         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8736         struct net_device *dev = info->user_ptr[1];
8737         struct wireless_dev *wdev = dev->ieee80211_ptr;
8738
8739         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8740                 return -EINVAL;
8741
8742         if (!rdev->ops->set_cqm_txe_config)
8743                 return -EOPNOTSUPP;
8744
8745         if (wdev->iftype != NL80211_IFTYPE_STATION &&
8746             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8747                 return -EOPNOTSUPP;
8748
8749         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8750 }
8751
8752 static int nl80211_set_cqm_rssi(struct genl_info *info,
8753                                 s32 threshold, u32 hysteresis)
8754 {
8755         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8756         struct net_device *dev = info->user_ptr[1];
8757         struct wireless_dev *wdev = dev->ieee80211_ptr;
8758
8759         if (threshold > 0)
8760                 return -EINVAL;
8761
8762         /* disabling - hysteresis should also be zero then */
8763         if (threshold == 0)
8764                 hysteresis = 0;
8765
8766         if (!rdev->ops->set_cqm_rssi_config)
8767                 return -EOPNOTSUPP;
8768
8769         if (wdev->iftype != NL80211_IFTYPE_STATION &&
8770             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8771                 return -EOPNOTSUPP;
8772
8773         return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8774 }
8775
8776 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8777 {
8778         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8779         struct nlattr *cqm;
8780         int err;
8781
8782         cqm = info->attrs[NL80211_ATTR_CQM];
8783         if (!cqm)
8784                 return -EINVAL;
8785
8786         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8787                                nl80211_attr_cqm_policy);
8788         if (err)
8789                 return err;
8790
8791         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8792             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8793                 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8794                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8795
8796                 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8797         }
8798
8799         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
8800             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
8801             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
8802                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
8803                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
8804                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
8805
8806                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
8807         }
8808
8809         return -EINVAL;
8810 }
8811
8812 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
8813 {
8814         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8815         struct net_device *dev = info->user_ptr[1];
8816         struct ocb_setup setup = {};
8817         int err;
8818
8819         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8820         if (err)
8821                 return err;
8822
8823         return cfg80211_join_ocb(rdev, dev, &setup);
8824 }
8825
8826 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
8827 {
8828         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8829         struct net_device *dev = info->user_ptr[1];
8830
8831         return cfg80211_leave_ocb(rdev, dev);
8832 }
8833
8834 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
8835 {
8836         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8837         struct net_device *dev = info->user_ptr[1];
8838         struct mesh_config cfg;
8839         struct mesh_setup setup;
8840         int err;
8841
8842         /* start with default */
8843         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
8844         memcpy(&setup, &default_mesh_setup, sizeof(setup));
8845
8846         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
8847                 /* and parse parameters if given */
8848                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
8849                 if (err)
8850                         return err;
8851         }
8852
8853         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
8854             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
8855                 return -EINVAL;
8856
8857         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
8858         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
8859
8860         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8861             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
8862                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8863                         return -EINVAL;
8864
8865         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
8866                 setup.beacon_interval =
8867                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8868                 if (setup.beacon_interval < 10 ||
8869                     setup.beacon_interval > 10000)
8870                         return -EINVAL;
8871         }
8872
8873         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
8874                 setup.dtim_period =
8875                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
8876                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
8877                         return -EINVAL;
8878         }
8879
8880         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
8881                 /* parse additional setup parameters if given */
8882                 err = nl80211_parse_mesh_setup(info, &setup);
8883                 if (err)
8884                         return err;
8885         }
8886
8887         if (setup.user_mpm)
8888                 cfg.auto_open_plinks = false;
8889
8890         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8891                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8892                 if (err)
8893                         return err;
8894         } else {
8895                 /* cfg80211_join_mesh() will sort it out */
8896                 setup.chandef.chan = NULL;
8897         }
8898
8899         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8900                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8901                 int n_rates =
8902                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8903                 struct ieee80211_supported_band *sband;
8904
8905                 if (!setup.chandef.chan)
8906                         return -EINVAL;
8907
8908                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
8909
8910                 err = ieee80211_get_ratemask(sband, rates, n_rates,
8911                                              &setup.basic_rates);
8912                 if (err)
8913                         return err;
8914         }
8915
8916         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
8917 }
8918
8919 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
8920 {
8921         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8922         struct net_device *dev = info->user_ptr[1];
8923
8924         return cfg80211_leave_mesh(rdev, dev);
8925 }
8926
8927 #ifdef CONFIG_PM
8928 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
8929                                         struct cfg80211_registered_device *rdev)
8930 {
8931         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
8932         struct nlattr *nl_pats, *nl_pat;
8933         int i, pat_len;
8934
8935         if (!wowlan->n_patterns)
8936                 return 0;
8937
8938         nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
8939         if (!nl_pats)
8940                 return -ENOBUFS;
8941
8942         for (i = 0; i < wowlan->n_patterns; i++) {
8943                 nl_pat = nla_nest_start(msg, i + 1);
8944                 if (!nl_pat)
8945                         return -ENOBUFS;
8946                 pat_len = wowlan->patterns[i].pattern_len;
8947                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
8948                             wowlan->patterns[i].mask) ||
8949                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8950                             wowlan->patterns[i].pattern) ||
8951                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8952                                 wowlan->patterns[i].pkt_offset))
8953                         return -ENOBUFS;
8954                 nla_nest_end(msg, nl_pat);
8955         }
8956         nla_nest_end(msg, nl_pats);
8957
8958         return 0;
8959 }
8960
8961 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
8962                                    struct cfg80211_wowlan_tcp *tcp)
8963 {
8964         struct nlattr *nl_tcp;
8965
8966         if (!tcp)
8967                 return 0;
8968
8969         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8970         if (!nl_tcp)
8971                 return -ENOBUFS;
8972
8973         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8974             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
8975             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
8976             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
8977             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
8978             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
8979                     tcp->payload_len, tcp->payload) ||
8980             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
8981                         tcp->data_interval) ||
8982             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
8983                     tcp->wake_len, tcp->wake_data) ||
8984             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
8985                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
8986                 return -ENOBUFS;
8987
8988         if (tcp->payload_seq.len &&
8989             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
8990                     sizeof(tcp->payload_seq), &tcp->payload_seq))
8991                 return -ENOBUFS;
8992
8993         if (tcp->payload_tok.len &&
8994             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
8995                     sizeof(tcp->payload_tok) + tcp->tokens_size,
8996                     &tcp->payload_tok))
8997                 return -ENOBUFS;
8998
8999         nla_nest_end(msg, nl_tcp);
9000
9001         return 0;
9002 }
9003
9004 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
9005                                   struct cfg80211_sched_scan_request *req)
9006 {
9007         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
9008         int i;
9009
9010         if (!req)
9011                 return 0;
9012
9013         nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
9014         if (!nd)
9015                 return -ENOBUFS;
9016
9017         if (req->n_scan_plans == 1 &&
9018             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
9019                         req->scan_plans[0].interval * 1000))
9020                 return -ENOBUFS;
9021
9022         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
9023                 return -ENOBUFS;
9024
9025         freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9026         if (!freqs)
9027                 return -ENOBUFS;
9028
9029         for (i = 0; i < req->n_channels; i++)
9030                 nla_put_u32(msg, i, req->channels[i]->center_freq);
9031
9032         nla_nest_end(msg, freqs);
9033
9034         if (req->n_match_sets) {
9035                 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
9036                 for (i = 0; i < req->n_match_sets; i++) {
9037                         match = nla_nest_start(msg, i);
9038                         nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
9039                                 req->match_sets[i].ssid.ssid_len,
9040                                 req->match_sets[i].ssid.ssid);
9041                         nla_nest_end(msg, match);
9042                 }
9043                 nla_nest_end(msg, matches);
9044         }
9045
9046         scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
9047         if (!scan_plans)
9048                 return -ENOBUFS;
9049
9050         for (i = 0; i < req->n_scan_plans; i++) {
9051                 scan_plan = nla_nest_start(msg, i + 1);
9052                 if (!scan_plan ||
9053                     nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
9054                                 req->scan_plans[i].interval) ||
9055                     (req->scan_plans[i].iterations &&
9056                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
9057                                  req->scan_plans[i].iterations)))
9058                         return -ENOBUFS;
9059                 nla_nest_end(msg, scan_plan);
9060         }
9061         nla_nest_end(msg, scan_plans);
9062
9063         nla_nest_end(msg, nd);
9064
9065         return 0;
9066 }
9067
9068 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
9069 {
9070         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9071         struct sk_buff *msg;
9072         void *hdr;
9073         u32 size = NLMSG_DEFAULT_SIZE;
9074
9075         if (!rdev->wiphy.wowlan)
9076                 return -EOPNOTSUPP;
9077
9078         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
9079                 /* adjust size to have room for all the data */
9080                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
9081                         rdev->wiphy.wowlan_config->tcp->payload_len +
9082                         rdev->wiphy.wowlan_config->tcp->wake_len +
9083                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
9084         }
9085
9086         msg = nlmsg_new(size, GFP_KERNEL);
9087         if (!msg)
9088                 return -ENOMEM;
9089
9090         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9091                              NL80211_CMD_GET_WOWLAN);
9092         if (!hdr)
9093                 goto nla_put_failure;
9094
9095         if (rdev->wiphy.wowlan_config) {
9096                 struct nlattr *nl_wowlan;
9097
9098                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
9099                 if (!nl_wowlan)
9100                         goto nla_put_failure;
9101
9102                 if ((rdev->wiphy.wowlan_config->any &&
9103                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
9104                     (rdev->wiphy.wowlan_config->disconnect &&
9105                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
9106                     (rdev->wiphy.wowlan_config->magic_pkt &&
9107                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
9108                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
9109                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
9110                     (rdev->wiphy.wowlan_config->eap_identity_req &&
9111                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
9112                     (rdev->wiphy.wowlan_config->four_way_handshake &&
9113                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
9114                     (rdev->wiphy.wowlan_config->rfkill_release &&
9115                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
9116                         goto nla_put_failure;
9117
9118                 if (nl80211_send_wowlan_patterns(msg, rdev))
9119                         goto nla_put_failure;
9120
9121                 if (nl80211_send_wowlan_tcp(msg,
9122                                             rdev->wiphy.wowlan_config->tcp))
9123                         goto nla_put_failure;
9124
9125                 if (nl80211_send_wowlan_nd(
9126                             msg,
9127                             rdev->wiphy.wowlan_config->nd_config))
9128                         goto nla_put_failure;
9129
9130                 nla_nest_end(msg, nl_wowlan);
9131         }
9132
9133         genlmsg_end(msg, hdr);
9134         return genlmsg_reply(msg, info);
9135
9136 nla_put_failure:
9137         nlmsg_free(msg);
9138         return -ENOBUFS;
9139 }
9140
9141 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
9142                                     struct nlattr *attr,
9143                                     struct cfg80211_wowlan *trig)
9144 {
9145         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
9146         struct cfg80211_wowlan_tcp *cfg;
9147         struct nl80211_wowlan_tcp_data_token *tok = NULL;
9148         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
9149         u32 size;
9150         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
9151         int err, port;
9152
9153         if (!rdev->wiphy.wowlan->tcp)
9154                 return -EINVAL;
9155
9156         err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
9157                         nla_data(attr), nla_len(attr),
9158                         nl80211_wowlan_tcp_policy);
9159         if (err)
9160                 return err;
9161
9162         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
9163             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
9164             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
9165             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
9166             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
9167             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
9168             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
9169             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
9170                 return -EINVAL;
9171
9172         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
9173         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
9174                 return -EINVAL;
9175
9176         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
9177                         rdev->wiphy.wowlan->tcp->data_interval_max ||
9178             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
9179                 return -EINVAL;
9180
9181         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
9182         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
9183                 return -EINVAL;
9184
9185         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
9186         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
9187                 return -EINVAL;
9188
9189         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
9190                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9191
9192                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9193                 tokens_size = tokln - sizeof(*tok);
9194
9195                 if (!tok->len || tokens_size % tok->len)
9196                         return -EINVAL;
9197                 if (!rdev->wiphy.wowlan->tcp->tok)
9198                         return -EINVAL;
9199                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
9200                         return -EINVAL;
9201                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
9202                         return -EINVAL;
9203                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
9204                         return -EINVAL;
9205                 if (tok->offset + tok->len > data_size)
9206                         return -EINVAL;
9207         }
9208
9209         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
9210                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
9211                 if (!rdev->wiphy.wowlan->tcp->seq)
9212                         return -EINVAL;
9213                 if (seq->len == 0 || seq->len > 4)
9214                         return -EINVAL;
9215                 if (seq->len + seq->offset > data_size)
9216                         return -EINVAL;
9217         }
9218
9219         size = sizeof(*cfg);
9220         size += data_size;
9221         size += wake_size + wake_mask_size;
9222         size += tokens_size;
9223
9224         cfg = kzalloc(size, GFP_KERNEL);
9225         if (!cfg)
9226                 return -ENOMEM;
9227         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
9228         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
9229         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
9230                ETH_ALEN);
9231         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
9232                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
9233         else
9234                 port = 0;
9235 #ifdef CONFIG_INET
9236         /* allocate a socket and port for it and use it */
9237         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
9238                             IPPROTO_TCP, &cfg->sock, 1);
9239         if (err) {
9240                 kfree(cfg);
9241                 return err;
9242         }
9243         if (inet_csk_get_port(cfg->sock->sk, port)) {
9244                 sock_release(cfg->sock);
9245                 kfree(cfg);
9246                 return -EADDRINUSE;
9247         }
9248         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
9249 #else
9250         if (!port) {
9251                 kfree(cfg);
9252                 return -EINVAL;
9253         }
9254         cfg->src_port = port;
9255 #endif
9256
9257         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
9258         cfg->payload_len = data_size;
9259         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
9260         memcpy((void *)cfg->payload,
9261                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
9262                data_size);
9263         if (seq)
9264                 cfg->payload_seq = *seq;
9265         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
9266         cfg->wake_len = wake_size;
9267         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
9268         memcpy((void *)cfg->wake_data,
9269                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
9270                wake_size);
9271         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
9272                          data_size + wake_size;
9273         memcpy((void *)cfg->wake_mask,
9274                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
9275                wake_mask_size);
9276         if (tok) {
9277                 cfg->tokens_size = tokens_size;
9278                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
9279         }
9280
9281         trig->tcp = cfg;
9282
9283         return 0;
9284 }
9285
9286 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
9287                                    const struct wiphy_wowlan_support *wowlan,
9288                                    struct nlattr *attr,
9289                                    struct cfg80211_wowlan *trig)
9290 {
9291         struct nlattr **tb;
9292         int err;
9293
9294         tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
9295         if (!tb)
9296                 return -ENOMEM;
9297
9298         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
9299                 err = -EOPNOTSUPP;
9300                 goto out;
9301         }
9302
9303         err = nla_parse(tb, NL80211_ATTR_MAX,
9304                         nla_data(attr), nla_len(attr),
9305                         nl80211_policy);
9306         if (err)
9307                 goto out;
9308
9309         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
9310         err = PTR_ERR_OR_ZERO(trig->nd_config);
9311         if (err)
9312                 trig->nd_config = NULL;
9313
9314 out:
9315         kfree(tb);
9316         return err;
9317 }
9318
9319 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
9320 {
9321         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9322         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
9323         struct cfg80211_wowlan new_triggers = {};
9324         struct cfg80211_wowlan *ntrig;
9325         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
9326         int err, i;
9327         bool prev_enabled = rdev->wiphy.wowlan_config;
9328         bool regular = false;
9329
9330         if (!wowlan)
9331                 return -EOPNOTSUPP;
9332
9333         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
9334                 cfg80211_rdev_free_wowlan(rdev);
9335                 rdev->wiphy.wowlan_config = NULL;
9336                 goto set_wakeup;
9337         }
9338
9339         err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
9340                         nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9341                         nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9342                         nl80211_wowlan_policy);
9343         if (err)
9344                 return err;
9345
9346         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
9347                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
9348                         return -EINVAL;
9349                 new_triggers.any = true;
9350         }
9351
9352         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
9353                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
9354                         return -EINVAL;
9355                 new_triggers.disconnect = true;
9356                 regular = true;
9357         }
9358
9359         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
9360                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
9361                         return -EINVAL;
9362                 new_triggers.magic_pkt = true;
9363                 regular = true;
9364         }
9365
9366         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
9367                 return -EINVAL;
9368
9369         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
9370                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
9371                         return -EINVAL;
9372                 new_triggers.gtk_rekey_failure = true;
9373                 regular = true;
9374         }
9375
9376         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
9377                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
9378                         return -EINVAL;
9379                 new_triggers.eap_identity_req = true;
9380                 regular = true;
9381         }
9382
9383         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
9384                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
9385                         return -EINVAL;
9386                 new_triggers.four_way_handshake = true;
9387                 regular = true;
9388         }
9389
9390         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
9391                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
9392                         return -EINVAL;
9393                 new_triggers.rfkill_release = true;
9394                 regular = true;
9395         }
9396
9397         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
9398                 struct nlattr *pat;
9399                 int n_patterns = 0;
9400                 int rem, pat_len, mask_len, pkt_offset;
9401                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9402
9403                 regular = true;
9404
9405                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9406                                     rem)
9407                         n_patterns++;
9408                 if (n_patterns > wowlan->n_patterns)
9409                         return -EINVAL;
9410
9411                 new_triggers.patterns = kcalloc(n_patterns,
9412                                                 sizeof(new_triggers.patterns[0]),
9413                                                 GFP_KERNEL);
9414                 if (!new_triggers.patterns)
9415                         return -ENOMEM;
9416
9417                 new_triggers.n_patterns = n_patterns;
9418                 i = 0;
9419
9420                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9421                                     rem) {
9422                         u8 *mask_pat;
9423
9424                         nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9425                                   nla_len(pat), nl80211_packet_pattern_policy);
9426                         err = -EINVAL;
9427                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
9428                             !pat_tb[NL80211_PKTPAT_PATTERN])
9429                                 goto error;
9430                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9431                         mask_len = DIV_ROUND_UP(pat_len, 8);
9432                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9433                                 goto error;
9434                         if (pat_len > wowlan->pattern_max_len ||
9435                             pat_len < wowlan->pattern_min_len)
9436                                 goto error;
9437
9438                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
9439                                 pkt_offset = 0;
9440                         else
9441                                 pkt_offset = nla_get_u32(
9442                                         pat_tb[NL80211_PKTPAT_OFFSET]);
9443                         if (pkt_offset > wowlan->max_pkt_offset)
9444                                 goto error;
9445                         new_triggers.patterns[i].pkt_offset = pkt_offset;
9446
9447                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9448                         if (!mask_pat) {
9449                                 err = -ENOMEM;
9450                                 goto error;
9451                         }
9452                         new_triggers.patterns[i].mask = mask_pat;
9453                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9454                                mask_len);
9455                         mask_pat += mask_len;
9456                         new_triggers.patterns[i].pattern = mask_pat;
9457                         new_triggers.patterns[i].pattern_len = pat_len;
9458                         memcpy(mask_pat,
9459                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9460                                pat_len);
9461                         i++;
9462                 }
9463         }
9464
9465         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
9466                 regular = true;
9467                 err = nl80211_parse_wowlan_tcp(
9468                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
9469                         &new_triggers);
9470                 if (err)
9471                         goto error;
9472         }
9473
9474         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
9475                 regular = true;
9476                 err = nl80211_parse_wowlan_nd(
9477                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
9478                         &new_triggers);
9479                 if (err)
9480                         goto error;
9481         }
9482
9483         /* The 'any' trigger means the device continues operating more or less
9484          * as in its normal operation mode and wakes up the host on most of the
9485          * normal interrupts (like packet RX, ...)
9486          * It therefore makes little sense to combine with the more constrained
9487          * wakeup trigger modes.
9488          */
9489         if (new_triggers.any && regular) {
9490                 err = -EINVAL;
9491                 goto error;
9492         }
9493
9494         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
9495         if (!ntrig) {
9496                 err = -ENOMEM;
9497                 goto error;
9498         }
9499         cfg80211_rdev_free_wowlan(rdev);
9500         rdev->wiphy.wowlan_config = ntrig;
9501
9502  set_wakeup:
9503         if (rdev->ops->set_wakeup &&
9504             prev_enabled != !!rdev->wiphy.wowlan_config)
9505                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
9506
9507         return 0;
9508  error:
9509         for (i = 0; i < new_triggers.n_patterns; i++)
9510                 kfree(new_triggers.patterns[i].mask);
9511         kfree(new_triggers.patterns);
9512         if (new_triggers.tcp && new_triggers.tcp->sock)
9513                 sock_release(new_triggers.tcp->sock);
9514         kfree(new_triggers.tcp);
9515         kfree(new_triggers.nd_config);
9516         return err;
9517 }
9518 #endif
9519
9520 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
9521                                        struct cfg80211_registered_device *rdev)
9522 {
9523         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
9524         int i, j, pat_len;
9525         struct cfg80211_coalesce_rules *rule;
9526
9527         if (!rdev->coalesce->n_rules)
9528                 return 0;
9529
9530         nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
9531         if (!nl_rules)
9532                 return -ENOBUFS;
9533
9534         for (i = 0; i < rdev->coalesce->n_rules; i++) {
9535                 nl_rule = nla_nest_start(msg, i + 1);
9536                 if (!nl_rule)
9537                         return -ENOBUFS;
9538
9539                 rule = &rdev->coalesce->rules[i];
9540                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
9541                                 rule->delay))
9542                         return -ENOBUFS;
9543
9544                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
9545                                 rule->condition))
9546                         return -ENOBUFS;
9547
9548                 nl_pats = nla_nest_start(msg,
9549                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
9550                 if (!nl_pats)
9551                         return -ENOBUFS;
9552
9553                 for (j = 0; j < rule->n_patterns; j++) {
9554                         nl_pat = nla_nest_start(msg, j + 1);
9555                         if (!nl_pat)
9556                                 return -ENOBUFS;
9557                         pat_len = rule->patterns[j].pattern_len;
9558                         if (nla_put(msg, NL80211_PKTPAT_MASK,
9559                                     DIV_ROUND_UP(pat_len, 8),
9560                                     rule->patterns[j].mask) ||
9561                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9562                                     rule->patterns[j].pattern) ||
9563                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9564                                         rule->patterns[j].pkt_offset))
9565                                 return -ENOBUFS;
9566                         nla_nest_end(msg, nl_pat);
9567                 }
9568                 nla_nest_end(msg, nl_pats);
9569                 nla_nest_end(msg, nl_rule);
9570         }
9571         nla_nest_end(msg, nl_rules);
9572
9573         return 0;
9574 }
9575
9576 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
9577 {
9578         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9579         struct sk_buff *msg;
9580         void *hdr;
9581
9582         if (!rdev->wiphy.coalesce)
9583                 return -EOPNOTSUPP;
9584
9585         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9586         if (!msg)
9587                 return -ENOMEM;
9588
9589         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9590                              NL80211_CMD_GET_COALESCE);
9591         if (!hdr)
9592                 goto nla_put_failure;
9593
9594         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
9595                 goto nla_put_failure;
9596
9597         genlmsg_end(msg, hdr);
9598         return genlmsg_reply(msg, info);
9599
9600 nla_put_failure:
9601         nlmsg_free(msg);
9602         return -ENOBUFS;
9603 }
9604
9605 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
9606 {
9607         struct cfg80211_coalesce *coalesce = rdev->coalesce;
9608         int i, j;
9609         struct cfg80211_coalesce_rules *rule;
9610
9611         if (!coalesce)
9612                 return;
9613
9614         for (i = 0; i < coalesce->n_rules; i++) {
9615                 rule = &coalesce->rules[i];
9616                 for (j = 0; j < rule->n_patterns; j++)
9617                         kfree(rule->patterns[j].mask);
9618                 kfree(rule->patterns);
9619         }
9620         kfree(coalesce->rules);
9621         kfree(coalesce);
9622         rdev->coalesce = NULL;
9623 }
9624
9625 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
9626                                        struct nlattr *rule,
9627                                        struct cfg80211_coalesce_rules *new_rule)
9628 {
9629         int err, i;
9630         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9631         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
9632         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
9633         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9634
9635         err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
9636                         nla_len(rule), nl80211_coalesce_policy);
9637         if (err)
9638                 return err;
9639
9640         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
9641                 new_rule->delay =
9642                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
9643         if (new_rule->delay > coalesce->max_delay)
9644                 return -EINVAL;
9645
9646         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
9647                 new_rule->condition =
9648                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
9649         if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
9650             new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
9651                 return -EINVAL;
9652
9653         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
9654                 return -EINVAL;
9655
9656         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9657                             rem)
9658                 n_patterns++;
9659         if (n_patterns > coalesce->n_patterns)
9660                 return -EINVAL;
9661
9662         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
9663                                      GFP_KERNEL);
9664         if (!new_rule->patterns)
9665                 return -ENOMEM;
9666
9667         new_rule->n_patterns = n_patterns;
9668         i = 0;
9669
9670         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9671                             rem) {
9672                 u8 *mask_pat;
9673
9674                 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9675                           nla_len(pat), nl80211_packet_pattern_policy);
9676                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9677                     !pat_tb[NL80211_PKTPAT_PATTERN])
9678                         return -EINVAL;
9679                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9680                 mask_len = DIV_ROUND_UP(pat_len, 8);
9681                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9682                         return -EINVAL;
9683                 if (pat_len > coalesce->pattern_max_len ||
9684                     pat_len < coalesce->pattern_min_len)
9685                         return -EINVAL;
9686
9687                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9688                         pkt_offset = 0;
9689                 else
9690                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
9691                 if (pkt_offset > coalesce->max_pkt_offset)
9692                         return -EINVAL;
9693                 new_rule->patterns[i].pkt_offset = pkt_offset;
9694
9695                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9696                 if (!mask_pat)
9697                         return -ENOMEM;
9698
9699                 new_rule->patterns[i].mask = mask_pat;
9700                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9701                        mask_len);
9702
9703                 mask_pat += mask_len;
9704                 new_rule->patterns[i].pattern = mask_pat;
9705                 new_rule->patterns[i].pattern_len = pat_len;
9706                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9707                        pat_len);
9708                 i++;
9709         }
9710
9711         return 0;
9712 }
9713
9714 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
9715 {
9716         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9717         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9718         struct cfg80211_coalesce new_coalesce = {};
9719         struct cfg80211_coalesce *n_coalesce;
9720         int err, rem_rule, n_rules = 0, i, j;
9721         struct nlattr *rule;
9722         struct cfg80211_coalesce_rules *tmp_rule;
9723
9724         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
9725                 return -EOPNOTSUPP;
9726
9727         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
9728                 cfg80211_rdev_free_coalesce(rdev);
9729                 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
9730                 return 0;
9731         }
9732
9733         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9734                             rem_rule)
9735                 n_rules++;
9736         if (n_rules > coalesce->n_rules)
9737                 return -EINVAL;
9738
9739         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
9740                                      GFP_KERNEL);
9741         if (!new_coalesce.rules)
9742                 return -ENOMEM;
9743
9744         new_coalesce.n_rules = n_rules;
9745         i = 0;
9746
9747         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9748                             rem_rule) {
9749                 err = nl80211_parse_coalesce_rule(rdev, rule,
9750                                                   &new_coalesce.rules[i]);
9751                 if (err)
9752                         goto error;
9753
9754                 i++;
9755         }
9756
9757         err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
9758         if (err)
9759                 goto error;
9760
9761         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
9762         if (!n_coalesce) {
9763                 err = -ENOMEM;
9764                 goto error;
9765         }
9766         cfg80211_rdev_free_coalesce(rdev);
9767         rdev->coalesce = n_coalesce;
9768
9769         return 0;
9770 error:
9771         for (i = 0; i < new_coalesce.n_rules; i++) {
9772                 tmp_rule = &new_coalesce.rules[i];
9773                 for (j = 0; j < tmp_rule->n_patterns; j++)
9774                         kfree(tmp_rule->patterns[j].mask);
9775                 kfree(tmp_rule->patterns);
9776         }
9777         kfree(new_coalesce.rules);
9778
9779         return err;
9780 }
9781
9782 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
9783 {
9784         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9785         struct net_device *dev = info->user_ptr[1];
9786         struct wireless_dev *wdev = dev->ieee80211_ptr;
9787         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
9788         struct cfg80211_gtk_rekey_data rekey_data;
9789         int err;
9790
9791         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
9792                 return -EINVAL;
9793
9794         err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
9795                         nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
9796                         nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
9797                         nl80211_rekey_policy);
9798         if (err)
9799                 return err;
9800
9801         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
9802             !tb[NL80211_REKEY_DATA_KCK])
9803                 return -EINVAL;
9804         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
9805                 return -ERANGE;
9806         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
9807                 return -ERANGE;
9808         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
9809                 return -ERANGE;
9810
9811         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
9812         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
9813         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
9814
9815         wdev_lock(wdev);
9816         if (!wdev->current_bss) {
9817                 err = -ENOTCONN;
9818                 goto out;
9819         }
9820
9821         if (!rdev->ops->set_rekey_data) {
9822                 err = -EOPNOTSUPP;
9823                 goto out;
9824         }
9825
9826         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
9827  out:
9828         wdev_unlock(wdev);
9829         return err;
9830 }
9831
9832 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
9833                                              struct genl_info *info)
9834 {
9835         struct net_device *dev = info->user_ptr[1];
9836         struct wireless_dev *wdev = dev->ieee80211_ptr;
9837
9838         if (wdev->iftype != NL80211_IFTYPE_AP &&
9839             wdev->iftype != NL80211_IFTYPE_P2P_GO)
9840                 return -EINVAL;
9841
9842         if (wdev->ap_unexpected_nlportid)
9843                 return -EBUSY;
9844
9845         wdev->ap_unexpected_nlportid = info->snd_portid;
9846         return 0;
9847 }
9848
9849 static int nl80211_probe_client(struct sk_buff *skb,
9850                                 struct genl_info *info)
9851 {
9852         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9853         struct net_device *dev = info->user_ptr[1];
9854         struct wireless_dev *wdev = dev->ieee80211_ptr;
9855         struct sk_buff *msg;
9856         void *hdr;
9857         const u8 *addr;
9858         u64 cookie;
9859         int err;
9860
9861         if (wdev->iftype != NL80211_IFTYPE_AP &&
9862             wdev->iftype != NL80211_IFTYPE_P2P_GO)
9863                 return -EOPNOTSUPP;
9864
9865         if (!info->attrs[NL80211_ATTR_MAC])
9866                 return -EINVAL;
9867
9868         if (!rdev->ops->probe_client)
9869                 return -EOPNOTSUPP;
9870
9871         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9872         if (!msg)
9873                 return -ENOMEM;
9874
9875         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9876                              NL80211_CMD_PROBE_CLIENT);
9877         if (!hdr) {
9878                 err = -ENOBUFS;
9879                 goto free_msg;
9880         }
9881
9882         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9883
9884         err = rdev_probe_client(rdev, dev, addr, &cookie);
9885         if (err)
9886                 goto free_msg;
9887
9888         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9889                 goto nla_put_failure;
9890
9891         genlmsg_end(msg, hdr);
9892
9893         return genlmsg_reply(msg, info);
9894
9895  nla_put_failure:
9896         err = -ENOBUFS;
9897  free_msg:
9898         nlmsg_free(msg);
9899         return err;
9900 }
9901
9902 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
9903 {
9904         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9905         struct cfg80211_beacon_registration *reg, *nreg;
9906         int rv;
9907
9908         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
9909                 return -EOPNOTSUPP;
9910
9911         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
9912         if (!nreg)
9913                 return -ENOMEM;
9914
9915         /* First, check if already registered. */
9916         spin_lock_bh(&rdev->beacon_registrations_lock);
9917         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9918                 if (reg->nlportid == info->snd_portid) {
9919                         rv = -EALREADY;
9920                         goto out_err;
9921                 }
9922         }
9923         /* Add it to the list */
9924         nreg->nlportid = info->snd_portid;
9925         list_add(&nreg->list, &rdev->beacon_registrations);
9926
9927         spin_unlock_bh(&rdev->beacon_registrations_lock);
9928
9929         return 0;
9930 out_err:
9931         spin_unlock_bh(&rdev->beacon_registrations_lock);
9932         kfree(nreg);
9933         return rv;
9934 }
9935
9936 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
9937 {
9938         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9939         struct wireless_dev *wdev = info->user_ptr[1];
9940         int err;
9941
9942         if (!rdev->ops->start_p2p_device)
9943                 return -EOPNOTSUPP;
9944
9945         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9946                 return -EOPNOTSUPP;
9947
9948         if (wdev->p2p_started)
9949                 return 0;
9950
9951         if (rfkill_blocked(rdev->rfkill))
9952                 return -ERFKILL;
9953
9954         err = rdev_start_p2p_device(rdev, wdev);
9955         if (err)
9956                 return err;
9957
9958         wdev->p2p_started = true;
9959         rdev->opencount++;
9960
9961         return 0;
9962 }
9963
9964 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
9965 {
9966         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9967         struct wireless_dev *wdev = info->user_ptr[1];
9968
9969         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9970                 return -EOPNOTSUPP;
9971
9972         if (!rdev->ops->stop_p2p_device)
9973                 return -EOPNOTSUPP;
9974
9975         cfg80211_stop_p2p_device(rdev, wdev);
9976
9977         return 0;
9978 }
9979
9980 static int nl80211_get_protocol_features(struct sk_buff *skb,
9981                                          struct genl_info *info)
9982 {
9983         void *hdr;
9984         struct sk_buff *msg;
9985
9986         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9987         if (!msg)
9988                 return -ENOMEM;
9989
9990         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9991                              NL80211_CMD_GET_PROTOCOL_FEATURES);
9992         if (!hdr)
9993                 goto nla_put_failure;
9994
9995         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
9996                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
9997                 goto nla_put_failure;
9998
9999         genlmsg_end(msg, hdr);
10000         return genlmsg_reply(msg, info);
10001
10002  nla_put_failure:
10003         kfree_skb(msg);
10004         return -ENOBUFS;
10005 }
10006
10007 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
10008 {
10009         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10010         struct cfg80211_update_ft_ies_params ft_params;
10011         struct net_device *dev = info->user_ptr[1];
10012
10013         if (!rdev->ops->update_ft_ies)
10014                 return -EOPNOTSUPP;
10015
10016         if (!info->attrs[NL80211_ATTR_MDID] ||
10017             !info->attrs[NL80211_ATTR_IE] ||
10018             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
10019                 return -EINVAL;
10020
10021         memset(&ft_params, 0, sizeof(ft_params));
10022         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
10023         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10024         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10025
10026         return rdev_update_ft_ies(rdev, dev, &ft_params);
10027 }
10028
10029 static int nl80211_crit_protocol_start(struct sk_buff *skb,
10030                                        struct genl_info *info)
10031 {
10032         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10033         struct wireless_dev *wdev = info->user_ptr[1];
10034         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
10035         u16 duration;
10036         int ret;
10037
10038         if (!rdev->ops->crit_proto_start)
10039                 return -EOPNOTSUPP;
10040
10041         if (WARN_ON(!rdev->ops->crit_proto_stop))
10042                 return -EINVAL;
10043
10044         if (rdev->crit_proto_nlportid)
10045                 return -EBUSY;
10046
10047         /* determine protocol if provided */
10048         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
10049                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
10050
10051         if (proto >= NUM_NL80211_CRIT_PROTO)
10052                 return -EINVAL;
10053
10054         /* timeout must be provided */
10055         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
10056                 return -EINVAL;
10057
10058         duration =
10059                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
10060
10061         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
10062                 return -ERANGE;
10063
10064         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
10065         if (!ret)
10066                 rdev->crit_proto_nlportid = info->snd_portid;
10067
10068         return ret;
10069 }
10070
10071 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
10072                                       struct genl_info *info)
10073 {
10074         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10075         struct wireless_dev *wdev = info->user_ptr[1];
10076
10077         if (!rdev->ops->crit_proto_stop)
10078                 return -EOPNOTSUPP;
10079
10080         if (rdev->crit_proto_nlportid) {
10081                 rdev->crit_proto_nlportid = 0;
10082                 rdev_crit_proto_stop(rdev, wdev);
10083         }
10084         return 0;
10085 }
10086
10087 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
10088 {
10089         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10090         struct wireless_dev *wdev =
10091                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
10092         int i, err;
10093         u32 vid, subcmd;
10094
10095         if (!rdev->wiphy.vendor_commands)
10096                 return -EOPNOTSUPP;
10097
10098         if (IS_ERR(wdev)) {
10099                 err = PTR_ERR(wdev);
10100                 if (err != -EINVAL)
10101                         return err;
10102                 wdev = NULL;
10103         } else if (wdev->wiphy != &rdev->wiphy) {
10104                 return -EINVAL;
10105         }
10106
10107         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
10108             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
10109                 return -EINVAL;
10110
10111         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
10112         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
10113         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
10114                 const struct wiphy_vendor_command *vcmd;
10115                 void *data = NULL;
10116                 int len = 0;
10117
10118                 vcmd = &rdev->wiphy.vendor_commands[i];
10119
10120                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
10121                         continue;
10122
10123                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
10124                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
10125                         if (!wdev)
10126                                 return -EINVAL;
10127                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
10128                             !wdev->netdev)
10129                                 return -EINVAL;
10130
10131                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
10132                                 if (wdev->netdev &&
10133                                     !netif_running(wdev->netdev))
10134                                         return -ENETDOWN;
10135                                 if (!wdev->netdev && !wdev->p2p_started)
10136                                         return -ENETDOWN;
10137                         }
10138
10139                         if (!vcmd->doit)
10140                                 return -EOPNOTSUPP;
10141                 } else {
10142                         wdev = NULL;
10143                 }
10144
10145                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
10146                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
10147                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
10148                 }
10149
10150                 rdev->cur_cmd_info = info;
10151                 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
10152                                                           data, len);
10153                 rdev->cur_cmd_info = NULL;
10154                 return err;
10155         }
10156
10157         return -EOPNOTSUPP;
10158 }
10159
10160 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
10161                                        struct netlink_callback *cb,
10162                                        struct cfg80211_registered_device **rdev,
10163                                        struct wireless_dev **wdev)
10164 {
10165         u32 vid, subcmd;
10166         unsigned int i;
10167         int vcmd_idx = -1;
10168         int err;
10169         void *data = NULL;
10170         unsigned int data_len = 0;
10171
10172         if (cb->args[0]) {
10173                 /* subtract the 1 again here */
10174                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
10175                 struct wireless_dev *tmp;
10176
10177                 if (!wiphy)
10178                         return -ENODEV;
10179                 *rdev = wiphy_to_rdev(wiphy);
10180                 *wdev = NULL;
10181
10182                 if (cb->args[1]) {
10183                         list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
10184                                 if (tmp->identifier == cb->args[1] - 1) {
10185                                         *wdev = tmp;
10186                                         break;
10187                                 }
10188                         }
10189                 }
10190
10191                 /* keep rtnl locked in successful case */
10192                 return 0;
10193         }
10194
10195         err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
10196                           nl80211_fam.attrbuf, nl80211_fam.maxattr,
10197                           nl80211_policy);
10198         if (err)
10199                 return err;
10200
10201         if (!nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_ID] ||
10202             !nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_SUBCMD])
10203                 return -EINVAL;
10204
10205         *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
10206                                            nl80211_fam.attrbuf);
10207         if (IS_ERR(*wdev))
10208                 *wdev = NULL;
10209
10210         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
10211                                            nl80211_fam.attrbuf);
10212         if (IS_ERR(*rdev))
10213                 return PTR_ERR(*rdev);
10214
10215         vid = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_ID]);
10216         subcmd = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
10217
10218         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
10219                 const struct wiphy_vendor_command *vcmd;
10220
10221                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
10222
10223                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
10224                         continue;
10225
10226                 if (!vcmd->dumpit)
10227                         return -EOPNOTSUPP;
10228
10229                 vcmd_idx = i;
10230                 break;
10231         }
10232
10233         if (vcmd_idx < 0)
10234                 return -EOPNOTSUPP;
10235
10236         if (nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]) {
10237                 data = nla_data(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]);
10238                 data_len = nla_len(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]);
10239         }
10240
10241         /* 0 is the first index - add 1 to parse only once */
10242         cb->args[0] = (*rdev)->wiphy_idx + 1;
10243         /* add 1 to know if it was NULL */
10244         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
10245         cb->args[2] = vcmd_idx;
10246         cb->args[3] = (unsigned long)data;
10247         cb->args[4] = data_len;
10248
10249         /* keep rtnl locked in successful case */
10250         return 0;
10251 }
10252
10253 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
10254                                    struct netlink_callback *cb)
10255 {
10256         struct cfg80211_registered_device *rdev;
10257         struct wireless_dev *wdev;
10258         unsigned int vcmd_idx;
10259         const struct wiphy_vendor_command *vcmd;
10260         void *data;
10261         int data_len;
10262         int err;
10263         struct nlattr *vendor_data;
10264
10265         rtnl_lock();
10266         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
10267         if (err)
10268                 goto out;
10269
10270         vcmd_idx = cb->args[2];
10271         data = (void *)cb->args[3];
10272         data_len = cb->args[4];
10273         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
10274
10275         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
10276                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
10277                 if (!wdev) {
10278                         err = -EINVAL;
10279                         goto out;
10280                 }
10281                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
10282                     !wdev->netdev) {
10283                         err = -EINVAL;
10284                         goto out;
10285                 }
10286
10287                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
10288                         if (wdev->netdev &&
10289                             !netif_running(wdev->netdev)) {
10290                                 err = -ENETDOWN;
10291                                 goto out;
10292                         }
10293                         if (!wdev->netdev && !wdev->p2p_started) {
10294                                 err = -ENETDOWN;
10295                                 goto out;
10296                         }
10297                 }
10298         }
10299
10300         while (1) {
10301                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
10302                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
10303                                            NL80211_CMD_VENDOR);
10304                 if (!hdr)
10305                         break;
10306
10307                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10308                     (wdev && nla_put_u64(skb, NL80211_ATTR_WDEV,
10309                                          wdev_id(wdev)))) {
10310                         genlmsg_cancel(skb, hdr);
10311                         break;
10312                 }
10313
10314                 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
10315                 if (!vendor_data) {
10316                         genlmsg_cancel(skb, hdr);
10317                         break;
10318                 }
10319
10320                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
10321                                    (unsigned long *)&cb->args[5]);
10322                 nla_nest_end(skb, vendor_data);
10323
10324                 if (err == -ENOBUFS || err == -ENOENT) {
10325                         genlmsg_cancel(skb, hdr);
10326                         break;
10327                 } else if (err) {
10328                         genlmsg_cancel(skb, hdr);
10329                         goto out;
10330                 }
10331
10332                 genlmsg_end(skb, hdr);
10333         }
10334
10335         err = skb->len;
10336  out:
10337         rtnl_unlock();
10338         return err;
10339 }
10340
10341 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
10342                                            enum nl80211_commands cmd,
10343                                            enum nl80211_attrs attr,
10344                                            int approxlen)
10345 {
10346         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10347
10348         if (WARN_ON(!rdev->cur_cmd_info))
10349                 return NULL;
10350
10351         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
10352                                            rdev->cur_cmd_info->snd_portid,
10353                                            rdev->cur_cmd_info->snd_seq,
10354                                            cmd, attr, NULL, GFP_KERNEL);
10355 }
10356 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
10357
10358 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
10359 {
10360         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
10361         void *hdr = ((void **)skb->cb)[1];
10362         struct nlattr *data = ((void **)skb->cb)[2];
10363
10364         /* clear CB data for netlink core to own from now on */
10365         memset(skb->cb, 0, sizeof(skb->cb));
10366
10367         if (WARN_ON(!rdev->cur_cmd_info)) {
10368                 kfree_skb(skb);
10369                 return -EINVAL;
10370         }
10371
10372         nla_nest_end(skb, data);
10373         genlmsg_end(skb, hdr);
10374         return genlmsg_reply(skb, rdev->cur_cmd_info);
10375 }
10376 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
10377
10378
10379 static int nl80211_set_qos_map(struct sk_buff *skb,
10380                                struct genl_info *info)
10381 {
10382         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10383         struct cfg80211_qos_map *qos_map = NULL;
10384         struct net_device *dev = info->user_ptr[1];
10385         u8 *pos, len, num_des, des_len, des;
10386         int ret;
10387
10388         if (!rdev->ops->set_qos_map)
10389                 return -EOPNOTSUPP;
10390
10391         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
10392                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
10393                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
10394
10395                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
10396                     len > IEEE80211_QOS_MAP_LEN_MAX)
10397                         return -EINVAL;
10398
10399                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
10400                 if (!qos_map)
10401                         return -ENOMEM;
10402
10403                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
10404                 if (num_des) {
10405                         des_len = num_des *
10406                                 sizeof(struct cfg80211_dscp_exception);
10407                         memcpy(qos_map->dscp_exception, pos, des_len);
10408                         qos_map->num_des = num_des;
10409                         for (des = 0; des < num_des; des++) {
10410                                 if (qos_map->dscp_exception[des].up > 7) {
10411                                         kfree(qos_map);
10412                                         return -EINVAL;
10413                                 }
10414                         }
10415                         pos += des_len;
10416                 }
10417                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
10418         }
10419
10420         wdev_lock(dev->ieee80211_ptr);
10421         ret = nl80211_key_allowed(dev->ieee80211_ptr);
10422         if (!ret)
10423                 ret = rdev_set_qos_map(rdev, dev, qos_map);
10424         wdev_unlock(dev->ieee80211_ptr);
10425
10426         kfree(qos_map);
10427         return ret;
10428 }
10429
10430 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
10431 {
10432         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10433         struct net_device *dev = info->user_ptr[1];
10434         struct wireless_dev *wdev = dev->ieee80211_ptr;
10435         const u8 *peer;
10436         u8 tsid, up;
10437         u16 admitted_time = 0;
10438         int err;
10439
10440         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
10441                 return -EOPNOTSUPP;
10442
10443         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
10444             !info->attrs[NL80211_ATTR_USER_PRIO])
10445                 return -EINVAL;
10446
10447         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10448         if (tsid >= IEEE80211_NUM_TIDS)
10449                 return -EINVAL;
10450
10451         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
10452         if (up >= IEEE80211_NUM_UPS)
10453                 return -EINVAL;
10454
10455         /* WMM uses TIDs 0-7 even for TSPEC */
10456         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
10457                 /* TODO: handle 802.11 TSPEC/admission control
10458                  * need more attributes for that (e.g. BA session requirement);
10459                  * change the WMM adminssion test above to allow both then
10460                  */
10461                 return -EINVAL;
10462         }
10463
10464         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10465
10466         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
10467                 admitted_time =
10468                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
10469                 if (!admitted_time)
10470                         return -EINVAL;
10471         }
10472
10473         wdev_lock(wdev);
10474         switch (wdev->iftype) {
10475         case NL80211_IFTYPE_STATION:
10476         case NL80211_IFTYPE_P2P_CLIENT:
10477                 if (wdev->current_bss)
10478                         break;
10479                 err = -ENOTCONN;
10480                 goto out;
10481         default:
10482                 err = -EOPNOTSUPP;
10483                 goto out;
10484         }
10485
10486         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
10487
10488  out:
10489         wdev_unlock(wdev);
10490         return err;
10491 }
10492
10493 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
10494 {
10495         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10496         struct net_device *dev = info->user_ptr[1];
10497         struct wireless_dev *wdev = dev->ieee80211_ptr;
10498         const u8 *peer;
10499         u8 tsid;
10500         int err;
10501
10502         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
10503                 return -EINVAL;
10504
10505         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10506         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10507
10508         wdev_lock(wdev);
10509         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
10510         wdev_unlock(wdev);
10511
10512         return err;
10513 }
10514
10515 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
10516                                        struct genl_info *info)
10517 {
10518         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10519         struct net_device *dev = info->user_ptr[1];
10520         struct wireless_dev *wdev = dev->ieee80211_ptr;
10521         struct cfg80211_chan_def chandef = {};
10522         const u8 *addr;
10523         u8 oper_class;
10524         int err;
10525
10526         if (!rdev->ops->tdls_channel_switch ||
10527             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10528                 return -EOPNOTSUPP;
10529
10530         switch (dev->ieee80211_ptr->iftype) {
10531         case NL80211_IFTYPE_STATION:
10532         case NL80211_IFTYPE_P2P_CLIENT:
10533                 break;
10534         default:
10535                 return -EOPNOTSUPP;
10536         }
10537
10538         if (!info->attrs[NL80211_ATTR_MAC] ||
10539             !info->attrs[NL80211_ATTR_OPER_CLASS])
10540                 return -EINVAL;
10541
10542         err = nl80211_parse_chandef(rdev, info, &chandef);
10543         if (err)
10544                 return err;
10545
10546         /*
10547          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
10548          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
10549          * specification is not defined for them.
10550          */
10551         if (chandef.chan->band == IEEE80211_BAND_2GHZ &&
10552             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
10553             chandef.width != NL80211_CHAN_WIDTH_20)
10554                 return -EINVAL;
10555
10556         /* we will be active on the TDLS link */
10557         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
10558                                            wdev->iftype))
10559                 return -EINVAL;
10560
10561         /* don't allow switching to DFS channels */
10562         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
10563                 return -EINVAL;
10564
10565         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10566         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
10567
10568         wdev_lock(wdev);
10569         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
10570         wdev_unlock(wdev);
10571
10572         return err;
10573 }
10574
10575 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
10576                                               struct genl_info *info)
10577 {
10578         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10579         struct net_device *dev = info->user_ptr[1];
10580         struct wireless_dev *wdev = dev->ieee80211_ptr;
10581         const u8 *addr;
10582
10583         if (!rdev->ops->tdls_channel_switch ||
10584             !rdev->ops->tdls_cancel_channel_switch ||
10585             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10586                 return -EOPNOTSUPP;
10587
10588         switch (dev->ieee80211_ptr->iftype) {
10589         case NL80211_IFTYPE_STATION:
10590         case NL80211_IFTYPE_P2P_CLIENT:
10591                 break;
10592         default:
10593                 return -EOPNOTSUPP;
10594         }
10595
10596         if (!info->attrs[NL80211_ATTR_MAC])
10597                 return -EINVAL;
10598
10599         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10600
10601         wdev_lock(wdev);
10602         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
10603         wdev_unlock(wdev);
10604
10605         return 0;
10606 }
10607
10608 #define NL80211_FLAG_NEED_WIPHY         0x01
10609 #define NL80211_FLAG_NEED_NETDEV        0x02
10610 #define NL80211_FLAG_NEED_RTNL          0x04
10611 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
10612 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
10613                                          NL80211_FLAG_CHECK_NETDEV_UP)
10614 #define NL80211_FLAG_NEED_WDEV          0x10
10615 /* If a netdev is associated, it must be UP, P2P must be started */
10616 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
10617                                          NL80211_FLAG_CHECK_NETDEV_UP)
10618 #define NL80211_FLAG_CLEAR_SKB          0x20
10619
10620 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
10621                             struct genl_info *info)
10622 {
10623         struct cfg80211_registered_device *rdev;
10624         struct wireless_dev *wdev;
10625         struct net_device *dev;
10626         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
10627
10628         if (rtnl)
10629                 rtnl_lock();
10630
10631         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
10632                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
10633                 if (IS_ERR(rdev)) {
10634                         if (rtnl)
10635                                 rtnl_unlock();
10636                         return PTR_ERR(rdev);
10637                 }
10638                 info->user_ptr[0] = rdev;
10639         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
10640                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10641                 ASSERT_RTNL();
10642
10643                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
10644                                                   info->attrs);
10645                 if (IS_ERR(wdev)) {
10646                         if (rtnl)
10647                                 rtnl_unlock();
10648                         return PTR_ERR(wdev);
10649                 }
10650
10651                 dev = wdev->netdev;
10652                 rdev = wiphy_to_rdev(wdev->wiphy);
10653
10654                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
10655                         if (!dev) {
10656                                 if (rtnl)
10657                                         rtnl_unlock();
10658                                 return -EINVAL;
10659                         }
10660
10661                         info->user_ptr[1] = dev;
10662                 } else {
10663                         info->user_ptr[1] = wdev;
10664                 }
10665
10666                 if (dev) {
10667                         if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
10668                             !netif_running(dev)) {
10669                                 if (rtnl)
10670                                         rtnl_unlock();
10671                                 return -ENETDOWN;
10672                         }
10673
10674                         dev_hold(dev);
10675                 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
10676                         if (!wdev->p2p_started) {
10677                                 if (rtnl)
10678                                         rtnl_unlock();
10679                                 return -ENETDOWN;
10680                         }
10681                 }
10682
10683                 info->user_ptr[0] = rdev;
10684         }
10685
10686         return 0;
10687 }
10688
10689 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
10690                               struct genl_info *info)
10691 {
10692         if (info->user_ptr[1]) {
10693                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10694                         struct wireless_dev *wdev = info->user_ptr[1];
10695
10696                         if (wdev->netdev)
10697                                 dev_put(wdev->netdev);
10698                 } else {
10699                         dev_put(info->user_ptr[1]);
10700                 }
10701         }
10702
10703         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
10704                 rtnl_unlock();
10705
10706         /* If needed, clear the netlink message payload from the SKB
10707          * as it might contain key data that shouldn't stick around on
10708          * the heap after the SKB is freed. The netlink message header
10709          * is still needed for further processing, so leave it intact.
10710          */
10711         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
10712                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
10713
10714                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
10715         }
10716 }
10717
10718 static const struct genl_ops nl80211_ops[] = {
10719         {
10720                 .cmd = NL80211_CMD_GET_WIPHY,
10721                 .doit = nl80211_get_wiphy,
10722                 .dumpit = nl80211_dump_wiphy,
10723                 .done = nl80211_dump_wiphy_done,
10724                 .policy = nl80211_policy,
10725                 /* can be retrieved by unprivileged users */
10726                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10727                                   NL80211_FLAG_NEED_RTNL,
10728         },
10729         {
10730                 .cmd = NL80211_CMD_SET_WIPHY,
10731                 .doit = nl80211_set_wiphy,
10732                 .policy = nl80211_policy,
10733                 .flags = GENL_ADMIN_PERM,
10734                 .internal_flags = NL80211_FLAG_NEED_RTNL,
10735         },
10736         {
10737                 .cmd = NL80211_CMD_GET_INTERFACE,
10738                 .doit = nl80211_get_interface,
10739                 .dumpit = nl80211_dump_interface,
10740                 .policy = nl80211_policy,
10741                 /* can be retrieved by unprivileged users */
10742                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10743                                   NL80211_FLAG_NEED_RTNL,
10744         },
10745         {
10746                 .cmd = NL80211_CMD_SET_INTERFACE,
10747                 .doit = nl80211_set_interface,
10748                 .policy = nl80211_policy,
10749                 .flags = GENL_ADMIN_PERM,
10750                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10751                                   NL80211_FLAG_NEED_RTNL,
10752         },
10753         {
10754                 .cmd = NL80211_CMD_NEW_INTERFACE,
10755                 .doit = nl80211_new_interface,
10756                 .policy = nl80211_policy,
10757                 .flags = GENL_ADMIN_PERM,
10758                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10759                                   NL80211_FLAG_NEED_RTNL,
10760         },
10761         {
10762                 .cmd = NL80211_CMD_DEL_INTERFACE,
10763                 .doit = nl80211_del_interface,
10764                 .policy = nl80211_policy,
10765                 .flags = GENL_ADMIN_PERM,
10766                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10767                                   NL80211_FLAG_NEED_RTNL,
10768         },
10769         {
10770                 .cmd = NL80211_CMD_GET_KEY,
10771                 .doit = nl80211_get_key,
10772                 .policy = nl80211_policy,
10773                 .flags = GENL_ADMIN_PERM,
10774                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10775                                   NL80211_FLAG_NEED_RTNL,
10776         },
10777         {
10778                 .cmd = NL80211_CMD_SET_KEY,
10779                 .doit = nl80211_set_key,
10780                 .policy = nl80211_policy,
10781                 .flags = GENL_ADMIN_PERM,
10782                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10783                                   NL80211_FLAG_NEED_RTNL |
10784                                   NL80211_FLAG_CLEAR_SKB,
10785         },
10786         {
10787                 .cmd = NL80211_CMD_NEW_KEY,
10788                 .doit = nl80211_new_key,
10789                 .policy = nl80211_policy,
10790                 .flags = GENL_ADMIN_PERM,
10791                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10792                                   NL80211_FLAG_NEED_RTNL |
10793                                   NL80211_FLAG_CLEAR_SKB,
10794         },
10795         {
10796                 .cmd = NL80211_CMD_DEL_KEY,
10797                 .doit = nl80211_del_key,
10798                 .policy = nl80211_policy,
10799                 .flags = GENL_ADMIN_PERM,
10800                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10801                                   NL80211_FLAG_NEED_RTNL,
10802         },
10803         {
10804                 .cmd = NL80211_CMD_SET_BEACON,
10805                 .policy = nl80211_policy,
10806                 .flags = GENL_ADMIN_PERM,
10807                 .doit = nl80211_set_beacon,
10808                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10809                                   NL80211_FLAG_NEED_RTNL,
10810         },
10811         {
10812                 .cmd = NL80211_CMD_START_AP,
10813                 .policy = nl80211_policy,
10814                 .flags = GENL_ADMIN_PERM,
10815                 .doit = nl80211_start_ap,
10816                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10817                                   NL80211_FLAG_NEED_RTNL,
10818         },
10819         {
10820                 .cmd = NL80211_CMD_STOP_AP,
10821                 .policy = nl80211_policy,
10822                 .flags = GENL_ADMIN_PERM,
10823                 .doit = nl80211_stop_ap,
10824                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10825                                   NL80211_FLAG_NEED_RTNL,
10826         },
10827         {
10828                 .cmd = NL80211_CMD_GET_STATION,
10829                 .doit = nl80211_get_station,
10830                 .dumpit = nl80211_dump_station,
10831                 .policy = nl80211_policy,
10832                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10833                                   NL80211_FLAG_NEED_RTNL,
10834         },
10835         {
10836                 .cmd = NL80211_CMD_SET_STATION,
10837                 .doit = nl80211_set_station,
10838                 .policy = nl80211_policy,
10839                 .flags = GENL_ADMIN_PERM,
10840                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10841                                   NL80211_FLAG_NEED_RTNL,
10842         },
10843         {
10844                 .cmd = NL80211_CMD_NEW_STATION,
10845                 .doit = nl80211_new_station,
10846                 .policy = nl80211_policy,
10847                 .flags = GENL_ADMIN_PERM,
10848                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10849                                   NL80211_FLAG_NEED_RTNL,
10850         },
10851         {
10852                 .cmd = NL80211_CMD_DEL_STATION,
10853                 .doit = nl80211_del_station,
10854                 .policy = nl80211_policy,
10855                 .flags = GENL_ADMIN_PERM,
10856                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10857                                   NL80211_FLAG_NEED_RTNL,
10858         },
10859         {
10860                 .cmd = NL80211_CMD_GET_MPATH,
10861                 .doit = nl80211_get_mpath,
10862                 .dumpit = nl80211_dump_mpath,
10863                 .policy = nl80211_policy,
10864                 .flags = GENL_ADMIN_PERM,
10865                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10866                                   NL80211_FLAG_NEED_RTNL,
10867         },
10868         {
10869                 .cmd = NL80211_CMD_GET_MPP,
10870                 .doit = nl80211_get_mpp,
10871                 .dumpit = nl80211_dump_mpp,
10872                 .policy = nl80211_policy,
10873                 .flags = GENL_ADMIN_PERM,
10874                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10875                                   NL80211_FLAG_NEED_RTNL,
10876         },
10877         {
10878                 .cmd = NL80211_CMD_SET_MPATH,
10879                 .doit = nl80211_set_mpath,
10880                 .policy = nl80211_policy,
10881                 .flags = GENL_ADMIN_PERM,
10882                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10883                                   NL80211_FLAG_NEED_RTNL,
10884         },
10885         {
10886                 .cmd = NL80211_CMD_NEW_MPATH,
10887                 .doit = nl80211_new_mpath,
10888                 .policy = nl80211_policy,
10889                 .flags = GENL_ADMIN_PERM,
10890                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10891                                   NL80211_FLAG_NEED_RTNL,
10892         },
10893         {
10894                 .cmd = NL80211_CMD_DEL_MPATH,
10895                 .doit = nl80211_del_mpath,
10896                 .policy = nl80211_policy,
10897                 .flags = GENL_ADMIN_PERM,
10898                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10899                                   NL80211_FLAG_NEED_RTNL,
10900         },
10901         {
10902                 .cmd = NL80211_CMD_SET_BSS,
10903                 .doit = nl80211_set_bss,
10904                 .policy = nl80211_policy,
10905                 .flags = GENL_ADMIN_PERM,
10906                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10907                                   NL80211_FLAG_NEED_RTNL,
10908         },
10909         {
10910                 .cmd = NL80211_CMD_GET_REG,
10911                 .doit = nl80211_get_reg_do,
10912                 .dumpit = nl80211_get_reg_dump,
10913                 .policy = nl80211_policy,
10914                 .internal_flags = NL80211_FLAG_NEED_RTNL,
10915                 /* can be retrieved by unprivileged users */
10916         },
10917 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
10918         {
10919                 .cmd = NL80211_CMD_SET_REG,
10920                 .doit = nl80211_set_reg,
10921                 .policy = nl80211_policy,
10922                 .flags = GENL_ADMIN_PERM,
10923                 .internal_flags = NL80211_FLAG_NEED_RTNL,
10924         },
10925 #endif
10926         {
10927                 .cmd = NL80211_CMD_REQ_SET_REG,
10928                 .doit = nl80211_req_set_reg,
10929                 .policy = nl80211_policy,
10930                 .flags = GENL_ADMIN_PERM,
10931         },
10932         {
10933                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
10934                 .doit = nl80211_get_mesh_config,
10935                 .policy = nl80211_policy,
10936                 /* can be retrieved by unprivileged users */
10937                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10938                                   NL80211_FLAG_NEED_RTNL,
10939         },
10940         {
10941                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
10942                 .doit = nl80211_update_mesh_config,
10943                 .policy = nl80211_policy,
10944                 .flags = GENL_ADMIN_PERM,
10945                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10946                                   NL80211_FLAG_NEED_RTNL,
10947         },
10948         {
10949                 .cmd = NL80211_CMD_TRIGGER_SCAN,
10950                 .doit = nl80211_trigger_scan,
10951                 .policy = nl80211_policy,
10952                 .flags = GENL_ADMIN_PERM,
10953                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10954                                   NL80211_FLAG_NEED_RTNL,
10955         },
10956         {
10957                 .cmd = NL80211_CMD_GET_SCAN,
10958                 .policy = nl80211_policy,
10959                 .dumpit = nl80211_dump_scan,
10960         },
10961         {
10962                 .cmd = NL80211_CMD_START_SCHED_SCAN,
10963                 .doit = nl80211_start_sched_scan,
10964                 .policy = nl80211_policy,
10965                 .flags = GENL_ADMIN_PERM,
10966                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10967                                   NL80211_FLAG_NEED_RTNL,
10968         },
10969         {
10970                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
10971                 .doit = nl80211_stop_sched_scan,
10972                 .policy = nl80211_policy,
10973                 .flags = GENL_ADMIN_PERM,
10974                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10975                                   NL80211_FLAG_NEED_RTNL,
10976         },
10977         {
10978                 .cmd = NL80211_CMD_AUTHENTICATE,
10979                 .doit = nl80211_authenticate,
10980                 .policy = nl80211_policy,
10981                 .flags = GENL_ADMIN_PERM,
10982                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10983                                   NL80211_FLAG_NEED_RTNL |
10984                                   NL80211_FLAG_CLEAR_SKB,
10985         },
10986         {
10987                 .cmd = NL80211_CMD_ASSOCIATE,
10988                 .doit = nl80211_associate,
10989                 .policy = nl80211_policy,
10990                 .flags = GENL_ADMIN_PERM,
10991                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10992                                   NL80211_FLAG_NEED_RTNL,
10993         },
10994         {
10995                 .cmd = NL80211_CMD_DEAUTHENTICATE,
10996                 .doit = nl80211_deauthenticate,
10997                 .policy = nl80211_policy,
10998                 .flags = GENL_ADMIN_PERM,
10999                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11000                                   NL80211_FLAG_NEED_RTNL,
11001         },
11002         {
11003                 .cmd = NL80211_CMD_DISASSOCIATE,
11004                 .doit = nl80211_disassociate,
11005                 .policy = nl80211_policy,
11006                 .flags = GENL_ADMIN_PERM,
11007                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11008                                   NL80211_FLAG_NEED_RTNL,
11009         },
11010         {
11011                 .cmd = NL80211_CMD_JOIN_IBSS,
11012                 .doit = nl80211_join_ibss,
11013                 .policy = nl80211_policy,
11014                 .flags = GENL_ADMIN_PERM,
11015                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11016                                   NL80211_FLAG_NEED_RTNL,
11017         },
11018         {
11019                 .cmd = NL80211_CMD_LEAVE_IBSS,
11020                 .doit = nl80211_leave_ibss,
11021                 .policy = nl80211_policy,
11022                 .flags = GENL_ADMIN_PERM,
11023                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11024                                   NL80211_FLAG_NEED_RTNL,
11025         },
11026 #ifdef CONFIG_NL80211_TESTMODE
11027         {
11028                 .cmd = NL80211_CMD_TESTMODE,
11029                 .doit = nl80211_testmode_do,
11030                 .dumpit = nl80211_testmode_dump,
11031                 .policy = nl80211_policy,
11032                 .flags = GENL_ADMIN_PERM,
11033                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11034                                   NL80211_FLAG_NEED_RTNL,
11035         },
11036 #endif
11037         {
11038                 .cmd = NL80211_CMD_CONNECT,
11039                 .doit = nl80211_connect,
11040                 .policy = nl80211_policy,
11041                 .flags = GENL_ADMIN_PERM,
11042                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11043                                   NL80211_FLAG_NEED_RTNL,
11044         },
11045         {
11046                 .cmd = NL80211_CMD_DISCONNECT,
11047                 .doit = nl80211_disconnect,
11048                 .policy = nl80211_policy,
11049                 .flags = GENL_ADMIN_PERM,
11050                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11051                                   NL80211_FLAG_NEED_RTNL,
11052         },
11053         {
11054                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
11055                 .doit = nl80211_wiphy_netns,
11056                 .policy = nl80211_policy,
11057                 .flags = GENL_ADMIN_PERM,
11058                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11059                                   NL80211_FLAG_NEED_RTNL,
11060         },
11061         {
11062                 .cmd = NL80211_CMD_GET_SURVEY,
11063                 .policy = nl80211_policy,
11064                 .dumpit = nl80211_dump_survey,
11065         },
11066         {
11067                 .cmd = NL80211_CMD_SET_PMKSA,
11068                 .doit = nl80211_setdel_pmksa,
11069                 .policy = nl80211_policy,
11070                 .flags = GENL_ADMIN_PERM,
11071                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11072                                   NL80211_FLAG_NEED_RTNL,
11073         },
11074         {
11075                 .cmd = NL80211_CMD_DEL_PMKSA,
11076                 .doit = nl80211_setdel_pmksa,
11077                 .policy = nl80211_policy,
11078                 .flags = GENL_ADMIN_PERM,
11079                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11080                                   NL80211_FLAG_NEED_RTNL,
11081         },
11082         {
11083                 .cmd = NL80211_CMD_FLUSH_PMKSA,
11084                 .doit = nl80211_flush_pmksa,
11085                 .policy = nl80211_policy,
11086                 .flags = GENL_ADMIN_PERM,
11087                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11088                                   NL80211_FLAG_NEED_RTNL,
11089         },
11090         {
11091                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
11092                 .doit = nl80211_remain_on_channel,
11093                 .policy = nl80211_policy,
11094                 .flags = GENL_ADMIN_PERM,
11095                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11096                                   NL80211_FLAG_NEED_RTNL,
11097         },
11098         {
11099                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11100                 .doit = nl80211_cancel_remain_on_channel,
11101                 .policy = nl80211_policy,
11102                 .flags = GENL_ADMIN_PERM,
11103                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11104                                   NL80211_FLAG_NEED_RTNL,
11105         },
11106         {
11107                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
11108                 .doit = nl80211_set_tx_bitrate_mask,
11109                 .policy = nl80211_policy,
11110                 .flags = GENL_ADMIN_PERM,
11111                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11112                                   NL80211_FLAG_NEED_RTNL,
11113         },
11114         {
11115                 .cmd = NL80211_CMD_REGISTER_FRAME,
11116                 .doit = nl80211_register_mgmt,
11117                 .policy = nl80211_policy,
11118                 .flags = GENL_ADMIN_PERM,
11119                 .internal_flags = NL80211_FLAG_NEED_WDEV |
11120                                   NL80211_FLAG_NEED_RTNL,
11121         },
11122         {
11123                 .cmd = NL80211_CMD_FRAME,
11124                 .doit = nl80211_tx_mgmt,
11125                 .policy = nl80211_policy,
11126                 .flags = GENL_ADMIN_PERM,
11127                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11128                                   NL80211_FLAG_NEED_RTNL,
11129         },
11130         {
11131                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
11132                 .doit = nl80211_tx_mgmt_cancel_wait,
11133                 .policy = nl80211_policy,
11134                 .flags = GENL_ADMIN_PERM,
11135                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11136                                   NL80211_FLAG_NEED_RTNL,
11137         },
11138         {
11139                 .cmd = NL80211_CMD_SET_POWER_SAVE,
11140                 .doit = nl80211_set_power_save,
11141                 .policy = nl80211_policy,
11142                 .flags = GENL_ADMIN_PERM,
11143                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11144                                   NL80211_FLAG_NEED_RTNL,
11145         },
11146         {
11147                 .cmd = NL80211_CMD_GET_POWER_SAVE,
11148                 .doit = nl80211_get_power_save,
11149                 .policy = nl80211_policy,
11150                 /* can be retrieved by unprivileged users */
11151                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11152                                   NL80211_FLAG_NEED_RTNL,
11153         },
11154         {
11155                 .cmd = NL80211_CMD_SET_CQM,
11156                 .doit = nl80211_set_cqm,
11157                 .policy = nl80211_policy,
11158                 .flags = GENL_ADMIN_PERM,
11159                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11160                                   NL80211_FLAG_NEED_RTNL,
11161         },
11162         {
11163                 .cmd = NL80211_CMD_SET_CHANNEL,
11164                 .doit = nl80211_set_channel,
11165                 .policy = nl80211_policy,
11166                 .flags = GENL_ADMIN_PERM,
11167                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11168                                   NL80211_FLAG_NEED_RTNL,
11169         },
11170         {
11171                 .cmd = NL80211_CMD_SET_WDS_PEER,
11172                 .doit = nl80211_set_wds_peer,
11173                 .policy = nl80211_policy,
11174                 .flags = GENL_ADMIN_PERM,
11175                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11176                                   NL80211_FLAG_NEED_RTNL,
11177         },
11178         {
11179                 .cmd = NL80211_CMD_JOIN_MESH,
11180                 .doit = nl80211_join_mesh,
11181                 .policy = nl80211_policy,
11182                 .flags = GENL_ADMIN_PERM,
11183                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11184                                   NL80211_FLAG_NEED_RTNL,
11185         },
11186         {
11187                 .cmd = NL80211_CMD_LEAVE_MESH,
11188                 .doit = nl80211_leave_mesh,
11189                 .policy = nl80211_policy,
11190                 .flags = GENL_ADMIN_PERM,
11191                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11192                                   NL80211_FLAG_NEED_RTNL,
11193         },
11194         {
11195                 .cmd = NL80211_CMD_JOIN_OCB,
11196                 .doit = nl80211_join_ocb,
11197                 .policy = nl80211_policy,
11198                 .flags = GENL_ADMIN_PERM,
11199                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11200                                   NL80211_FLAG_NEED_RTNL,
11201         },
11202         {
11203                 .cmd = NL80211_CMD_LEAVE_OCB,
11204                 .doit = nl80211_leave_ocb,
11205                 .policy = nl80211_policy,
11206                 .flags = GENL_ADMIN_PERM,
11207                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11208                                   NL80211_FLAG_NEED_RTNL,
11209         },
11210 #ifdef CONFIG_PM
11211         {
11212                 .cmd = NL80211_CMD_GET_WOWLAN,
11213                 .doit = nl80211_get_wowlan,
11214                 .policy = nl80211_policy,
11215                 /* can be retrieved by unprivileged users */
11216                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11217                                   NL80211_FLAG_NEED_RTNL,
11218         },
11219         {
11220                 .cmd = NL80211_CMD_SET_WOWLAN,
11221                 .doit = nl80211_set_wowlan,
11222                 .policy = nl80211_policy,
11223                 .flags = GENL_ADMIN_PERM,
11224                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11225                                   NL80211_FLAG_NEED_RTNL,
11226         },
11227 #endif
11228         {
11229                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
11230                 .doit = nl80211_set_rekey_data,
11231                 .policy = nl80211_policy,
11232                 .flags = GENL_ADMIN_PERM,
11233                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11234                                   NL80211_FLAG_NEED_RTNL |
11235                                   NL80211_FLAG_CLEAR_SKB,
11236         },
11237         {
11238                 .cmd = NL80211_CMD_TDLS_MGMT,
11239                 .doit = nl80211_tdls_mgmt,
11240                 .policy = nl80211_policy,
11241                 .flags = GENL_ADMIN_PERM,
11242                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11243                                   NL80211_FLAG_NEED_RTNL,
11244         },
11245         {
11246                 .cmd = NL80211_CMD_TDLS_OPER,
11247                 .doit = nl80211_tdls_oper,
11248                 .policy = nl80211_policy,
11249                 .flags = GENL_ADMIN_PERM,
11250                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11251                                   NL80211_FLAG_NEED_RTNL,
11252         },
11253         {
11254                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
11255                 .doit = nl80211_register_unexpected_frame,
11256                 .policy = nl80211_policy,
11257                 .flags = GENL_ADMIN_PERM,
11258                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11259                                   NL80211_FLAG_NEED_RTNL,
11260         },
11261         {
11262                 .cmd = NL80211_CMD_PROBE_CLIENT,
11263                 .doit = nl80211_probe_client,
11264                 .policy = nl80211_policy,
11265                 .flags = GENL_ADMIN_PERM,
11266                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11267                                   NL80211_FLAG_NEED_RTNL,
11268         },
11269         {
11270                 .cmd = NL80211_CMD_REGISTER_BEACONS,
11271                 .doit = nl80211_register_beacons,
11272                 .policy = nl80211_policy,
11273                 .flags = GENL_ADMIN_PERM,
11274                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11275                                   NL80211_FLAG_NEED_RTNL,
11276         },
11277         {
11278                 .cmd = NL80211_CMD_SET_NOACK_MAP,
11279                 .doit = nl80211_set_noack_map,
11280                 .policy = nl80211_policy,
11281                 .flags = GENL_ADMIN_PERM,
11282                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11283                                   NL80211_FLAG_NEED_RTNL,
11284         },
11285         {
11286                 .cmd = NL80211_CMD_START_P2P_DEVICE,
11287                 .doit = nl80211_start_p2p_device,
11288                 .policy = nl80211_policy,
11289                 .flags = GENL_ADMIN_PERM,
11290                 .internal_flags = NL80211_FLAG_NEED_WDEV |
11291                                   NL80211_FLAG_NEED_RTNL,
11292         },
11293         {
11294                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
11295                 .doit = nl80211_stop_p2p_device,
11296                 .policy = nl80211_policy,
11297                 .flags = GENL_ADMIN_PERM,
11298                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11299                                   NL80211_FLAG_NEED_RTNL,
11300         },
11301         {
11302                 .cmd = NL80211_CMD_SET_MCAST_RATE,
11303                 .doit = nl80211_set_mcast_rate,
11304                 .policy = nl80211_policy,
11305                 .flags = GENL_ADMIN_PERM,
11306                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11307                                   NL80211_FLAG_NEED_RTNL,
11308         },
11309         {
11310                 .cmd = NL80211_CMD_SET_MAC_ACL,
11311                 .doit = nl80211_set_mac_acl,
11312                 .policy = nl80211_policy,
11313                 .flags = GENL_ADMIN_PERM,
11314                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11315                                   NL80211_FLAG_NEED_RTNL,
11316         },
11317         {
11318                 .cmd = NL80211_CMD_RADAR_DETECT,
11319                 .doit = nl80211_start_radar_detection,
11320                 .policy = nl80211_policy,
11321                 .flags = GENL_ADMIN_PERM,
11322                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11323                                   NL80211_FLAG_NEED_RTNL,
11324         },
11325         {
11326                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
11327                 .doit = nl80211_get_protocol_features,
11328                 .policy = nl80211_policy,
11329         },
11330         {
11331                 .cmd = NL80211_CMD_UPDATE_FT_IES,
11332                 .doit = nl80211_update_ft_ies,
11333                 .policy = nl80211_policy,
11334                 .flags = GENL_ADMIN_PERM,
11335                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11336                                   NL80211_FLAG_NEED_RTNL,
11337         },
11338         {
11339                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
11340                 .doit = nl80211_crit_protocol_start,
11341                 .policy = nl80211_policy,
11342                 .flags = GENL_ADMIN_PERM,
11343                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11344                                   NL80211_FLAG_NEED_RTNL,
11345         },
11346         {
11347                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
11348                 .doit = nl80211_crit_protocol_stop,
11349                 .policy = nl80211_policy,
11350                 .flags = GENL_ADMIN_PERM,
11351                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11352                                   NL80211_FLAG_NEED_RTNL,
11353         },
11354         {
11355                 .cmd = NL80211_CMD_GET_COALESCE,
11356                 .doit = nl80211_get_coalesce,
11357                 .policy = nl80211_policy,
11358                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11359                                   NL80211_FLAG_NEED_RTNL,
11360         },
11361         {
11362                 .cmd = NL80211_CMD_SET_COALESCE,
11363                 .doit = nl80211_set_coalesce,
11364                 .policy = nl80211_policy,
11365                 .flags = GENL_ADMIN_PERM,
11366                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11367                                   NL80211_FLAG_NEED_RTNL,
11368         },
11369         {
11370                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
11371                 .doit = nl80211_channel_switch,
11372                 .policy = nl80211_policy,
11373                 .flags = GENL_ADMIN_PERM,
11374                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11375                                   NL80211_FLAG_NEED_RTNL,
11376         },
11377         {
11378                 .cmd = NL80211_CMD_VENDOR,
11379                 .doit = nl80211_vendor_cmd,
11380                 .dumpit = nl80211_vendor_cmd_dump,
11381                 .policy = nl80211_policy,
11382                 .flags = GENL_ADMIN_PERM,
11383                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11384                                   NL80211_FLAG_NEED_RTNL,
11385         },
11386         {
11387                 .cmd = NL80211_CMD_SET_QOS_MAP,
11388                 .doit = nl80211_set_qos_map,
11389                 .policy = nl80211_policy,
11390                 .flags = GENL_ADMIN_PERM,
11391                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11392                                   NL80211_FLAG_NEED_RTNL,
11393         },
11394         {
11395                 .cmd = NL80211_CMD_ADD_TX_TS,
11396                 .doit = nl80211_add_tx_ts,
11397                 .policy = nl80211_policy,
11398                 .flags = GENL_ADMIN_PERM,
11399                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11400                                   NL80211_FLAG_NEED_RTNL,
11401         },
11402         {
11403                 .cmd = NL80211_CMD_DEL_TX_TS,
11404                 .doit = nl80211_del_tx_ts,
11405                 .policy = nl80211_policy,
11406                 .flags = GENL_ADMIN_PERM,
11407                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11408                                   NL80211_FLAG_NEED_RTNL,
11409         },
11410         {
11411                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
11412                 .doit = nl80211_tdls_channel_switch,
11413                 .policy = nl80211_policy,
11414                 .flags = GENL_ADMIN_PERM,
11415                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11416                                   NL80211_FLAG_NEED_RTNL,
11417         },
11418         {
11419                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
11420                 .doit = nl80211_tdls_cancel_channel_switch,
11421                 .policy = nl80211_policy,
11422                 .flags = GENL_ADMIN_PERM,
11423                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11424                                   NL80211_FLAG_NEED_RTNL,
11425         },
11426 };
11427
11428 /* notification functions */
11429
11430 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
11431                           enum nl80211_commands cmd)
11432 {
11433         struct sk_buff *msg;
11434         struct nl80211_dump_wiphy_state state = {};
11435
11436         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
11437                 cmd != NL80211_CMD_DEL_WIPHY);
11438
11439         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11440         if (!msg)
11441                 return;
11442
11443         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
11444                 nlmsg_free(msg);
11445                 return;
11446         }
11447
11448         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11449                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
11450 }
11451
11452 static int nl80211_add_scan_req(struct sk_buff *msg,
11453                                 struct cfg80211_registered_device *rdev)
11454 {
11455         struct cfg80211_scan_request *req = rdev->scan_req;
11456         struct nlattr *nest;
11457         int i;
11458
11459         if (WARN_ON(!req))
11460                 return 0;
11461
11462         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
11463         if (!nest)
11464                 goto nla_put_failure;
11465         for (i = 0; i < req->n_ssids; i++) {
11466                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
11467                         goto nla_put_failure;
11468         }
11469         nla_nest_end(msg, nest);
11470
11471         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11472         if (!nest)
11473                 goto nla_put_failure;
11474         for (i = 0; i < req->n_channels; i++) {
11475                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11476                         goto nla_put_failure;
11477         }
11478         nla_nest_end(msg, nest);
11479
11480         if (req->ie &&
11481             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
11482                 goto nla_put_failure;
11483
11484         if (req->flags &&
11485             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
11486                 goto nla_put_failure;
11487
11488         return 0;
11489  nla_put_failure:
11490         return -ENOBUFS;
11491 }
11492
11493 static int nl80211_send_scan_msg(struct sk_buff *msg,
11494                                  struct cfg80211_registered_device *rdev,
11495                                  struct wireless_dev *wdev,
11496                                  u32 portid, u32 seq, int flags,
11497                                  u32 cmd)
11498 {
11499         void *hdr;
11500
11501         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11502         if (!hdr)
11503                 return -1;
11504
11505         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11506             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11507                                          wdev->netdev->ifindex)) ||
11508             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11509                 goto nla_put_failure;
11510
11511         /* ignore errors and send incomplete event anyway */
11512         nl80211_add_scan_req(msg, rdev);
11513
11514         genlmsg_end(msg, hdr);
11515         return 0;
11516
11517  nla_put_failure:
11518         genlmsg_cancel(msg, hdr);
11519         return -EMSGSIZE;
11520 }
11521
11522 static int
11523 nl80211_send_sched_scan_msg(struct sk_buff *msg,
11524                             struct cfg80211_registered_device *rdev,
11525                             struct net_device *netdev,
11526                             u32 portid, u32 seq, int flags, u32 cmd)
11527 {
11528         void *hdr;
11529
11530         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11531         if (!hdr)
11532                 return -1;
11533
11534         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11535             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11536                 goto nla_put_failure;
11537
11538         genlmsg_end(msg, hdr);
11539         return 0;
11540
11541  nla_put_failure:
11542         genlmsg_cancel(msg, hdr);
11543         return -EMSGSIZE;
11544 }
11545
11546 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
11547                              struct wireless_dev *wdev)
11548 {
11549         struct sk_buff *msg;
11550
11551         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11552         if (!msg)
11553                 return;
11554
11555         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11556                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
11557                 nlmsg_free(msg);
11558                 return;
11559         }
11560
11561         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11562                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11563 }
11564
11565 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
11566                                        struct wireless_dev *wdev, bool aborted)
11567 {
11568         struct sk_buff *msg;
11569
11570         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11571         if (!msg)
11572                 return NULL;
11573
11574         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11575                                   aborted ? NL80211_CMD_SCAN_ABORTED :
11576                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
11577                 nlmsg_free(msg);
11578                 return NULL;
11579         }
11580
11581         return msg;
11582 }
11583
11584 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
11585                               struct sk_buff *msg)
11586 {
11587         if (!msg)
11588                 return;
11589
11590         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11591                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11592 }
11593
11594 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
11595                                      struct net_device *netdev)
11596 {
11597         struct sk_buff *msg;
11598
11599         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11600         if (!msg)
11601                 return;
11602
11603         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
11604                                         NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
11605                 nlmsg_free(msg);
11606                 return;
11607         }
11608
11609         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11610                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11611 }
11612
11613 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
11614                              struct net_device *netdev, u32 cmd)
11615 {
11616         struct sk_buff *msg;
11617
11618         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11619         if (!msg)
11620                 return;
11621
11622         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
11623                 nlmsg_free(msg);
11624                 return;
11625         }
11626
11627         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11628                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11629 }
11630
11631 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
11632                                           struct regulatory_request *request)
11633 {
11634         /* Userspace can always count this one always being set */
11635         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
11636                 goto nla_put_failure;
11637
11638         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
11639                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11640                                NL80211_REGDOM_TYPE_WORLD))
11641                         goto nla_put_failure;
11642         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
11643                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11644                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
11645                         goto nla_put_failure;
11646         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
11647                    request->intersect) {
11648                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11649                                NL80211_REGDOM_TYPE_INTERSECTION))
11650                         goto nla_put_failure;
11651         } else {
11652                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11653                                NL80211_REGDOM_TYPE_COUNTRY) ||
11654                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
11655                                    request->alpha2))
11656                         goto nla_put_failure;
11657         }
11658
11659         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
11660                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
11661
11662                 if (wiphy &&
11663                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
11664                         goto nla_put_failure;
11665
11666                 if (wiphy &&
11667                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
11668                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
11669                         goto nla_put_failure;
11670         }
11671
11672         return true;
11673
11674 nla_put_failure:
11675         return false;
11676 }
11677
11678 /*
11679  * This can happen on global regulatory changes or device specific settings
11680  * based on custom regulatory domains.
11681  */
11682 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
11683                                      struct regulatory_request *request)
11684 {
11685         struct sk_buff *msg;
11686         void *hdr;
11687
11688         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11689         if (!msg)
11690                 return;
11691
11692         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
11693         if (!hdr) {
11694                 nlmsg_free(msg);
11695                 return;
11696         }
11697
11698         if (nl80211_reg_change_event_fill(msg, request) == false)
11699                 goto nla_put_failure;
11700
11701         genlmsg_end(msg, hdr);
11702
11703         rcu_read_lock();
11704         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11705                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11706         rcu_read_unlock();
11707
11708         return;
11709
11710 nla_put_failure:
11711         genlmsg_cancel(msg, hdr);
11712         nlmsg_free(msg);
11713 }
11714
11715 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
11716                                     struct net_device *netdev,
11717                                     const u8 *buf, size_t len,
11718                                     enum nl80211_commands cmd, gfp_t gfp,
11719                                     int uapsd_queues)
11720 {
11721         struct sk_buff *msg;
11722         void *hdr;
11723
11724         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11725         if (!msg)
11726                 return;
11727
11728         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11729         if (!hdr) {
11730                 nlmsg_free(msg);
11731                 return;
11732         }
11733
11734         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11735             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11736             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
11737                 goto nla_put_failure;
11738
11739         if (uapsd_queues >= 0) {
11740                 struct nlattr *nla_wmm =
11741                         nla_nest_start(msg, NL80211_ATTR_STA_WME);
11742                 if (!nla_wmm)
11743                         goto nla_put_failure;
11744
11745                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
11746                                uapsd_queues))
11747                         goto nla_put_failure;
11748
11749                 nla_nest_end(msg, nla_wmm);
11750         }
11751
11752         genlmsg_end(msg, hdr);
11753
11754         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11755                                 NL80211_MCGRP_MLME, gfp);
11756         return;
11757
11758  nla_put_failure:
11759         genlmsg_cancel(msg, hdr);
11760         nlmsg_free(msg);
11761 }
11762
11763 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
11764                           struct net_device *netdev, const u8 *buf,
11765                           size_t len, gfp_t gfp)
11766 {
11767         nl80211_send_mlme_event(rdev, netdev, buf, len,
11768                                 NL80211_CMD_AUTHENTICATE, gfp, -1);
11769 }
11770
11771 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
11772                            struct net_device *netdev, const u8 *buf,
11773                            size_t len, gfp_t gfp, int uapsd_queues)
11774 {
11775         nl80211_send_mlme_event(rdev, netdev, buf, len,
11776                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
11777 }
11778
11779 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
11780                          struct net_device *netdev, const u8 *buf,
11781                          size_t len, gfp_t gfp)
11782 {
11783         nl80211_send_mlme_event(rdev, netdev, buf, len,
11784                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
11785 }
11786
11787 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
11788                            struct net_device *netdev, const u8 *buf,
11789                            size_t len, gfp_t gfp)
11790 {
11791         nl80211_send_mlme_event(rdev, netdev, buf, len,
11792                                 NL80211_CMD_DISASSOCIATE, gfp, -1);
11793 }
11794
11795 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
11796                                   size_t len)
11797 {
11798         struct wireless_dev *wdev = dev->ieee80211_ptr;
11799         struct wiphy *wiphy = wdev->wiphy;
11800         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11801         const struct ieee80211_mgmt *mgmt = (void *)buf;
11802         u32 cmd;
11803
11804         if (WARN_ON(len < 2))
11805                 return;
11806
11807         if (ieee80211_is_deauth(mgmt->frame_control))
11808                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
11809         else
11810                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
11811
11812         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
11813         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
11814 }
11815 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
11816
11817 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
11818                                       struct net_device *netdev, int cmd,
11819                                       const u8 *addr, gfp_t gfp)
11820 {
11821         struct sk_buff *msg;
11822         void *hdr;
11823
11824         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11825         if (!msg)
11826                 return;
11827
11828         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11829         if (!hdr) {
11830                 nlmsg_free(msg);
11831                 return;
11832         }
11833
11834         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11835             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11836             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
11837             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11838                 goto nla_put_failure;
11839
11840         genlmsg_end(msg, hdr);
11841
11842         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11843                                 NL80211_MCGRP_MLME, gfp);
11844         return;
11845
11846  nla_put_failure:
11847         genlmsg_cancel(msg, hdr);
11848         nlmsg_free(msg);
11849 }
11850
11851 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
11852                                struct net_device *netdev, const u8 *addr,
11853                                gfp_t gfp)
11854 {
11855         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
11856                                   addr, gfp);
11857 }
11858
11859 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
11860                                 struct net_device *netdev, const u8 *addr,
11861                                 gfp_t gfp)
11862 {
11863         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
11864                                   addr, gfp);
11865 }
11866
11867 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
11868                                  struct net_device *netdev, const u8 *bssid,
11869                                  const u8 *req_ie, size_t req_ie_len,
11870                                  const u8 *resp_ie, size_t resp_ie_len,
11871                                  u16 status, gfp_t gfp)
11872 {
11873         struct sk_buff *msg;
11874         void *hdr;
11875
11876         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11877         if (!msg)
11878                 return;
11879
11880         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
11881         if (!hdr) {
11882                 nlmsg_free(msg);
11883                 return;
11884         }
11885
11886         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11887             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11888             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
11889             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
11890             (req_ie &&
11891              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11892             (resp_ie &&
11893              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11894                 goto nla_put_failure;
11895
11896         genlmsg_end(msg, hdr);
11897
11898         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11899                                 NL80211_MCGRP_MLME, gfp);
11900         return;
11901
11902  nla_put_failure:
11903         genlmsg_cancel(msg, hdr);
11904         nlmsg_free(msg);
11905
11906 }
11907
11908 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
11909                          struct net_device *netdev, const u8 *bssid,
11910                          const u8 *req_ie, size_t req_ie_len,
11911                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
11912 {
11913         struct sk_buff *msg;
11914         void *hdr;
11915
11916         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11917         if (!msg)
11918                 return;
11919
11920         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
11921         if (!hdr) {
11922                 nlmsg_free(msg);
11923                 return;
11924         }
11925
11926         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11927             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11928             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
11929             (req_ie &&
11930              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11931             (resp_ie &&
11932              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11933                 goto nla_put_failure;
11934
11935         genlmsg_end(msg, hdr);
11936
11937         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11938                                 NL80211_MCGRP_MLME, gfp);
11939         return;
11940
11941  nla_put_failure:
11942         genlmsg_cancel(msg, hdr);
11943         nlmsg_free(msg);
11944
11945 }
11946
11947 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
11948                                struct net_device *netdev, u16 reason,
11949                                const u8 *ie, size_t ie_len, bool from_ap)
11950 {
11951         struct sk_buff *msg;
11952         void *hdr;
11953
11954         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11955         if (!msg)
11956                 return;
11957
11958         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
11959         if (!hdr) {
11960                 nlmsg_free(msg);
11961                 return;
11962         }
11963
11964         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11965             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11966             (from_ap && reason &&
11967              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
11968             (from_ap &&
11969              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
11970             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
11971                 goto nla_put_failure;
11972
11973         genlmsg_end(msg, hdr);
11974
11975         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11976                                 NL80211_MCGRP_MLME, GFP_KERNEL);
11977         return;
11978
11979  nla_put_failure:
11980         genlmsg_cancel(msg, hdr);
11981         nlmsg_free(msg);
11982
11983 }
11984
11985 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
11986                              struct net_device *netdev, const u8 *bssid,
11987                              gfp_t gfp)
11988 {
11989         struct sk_buff *msg;
11990         void *hdr;
11991
11992         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11993         if (!msg)
11994                 return;
11995
11996         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
11997         if (!hdr) {
11998                 nlmsg_free(msg);
11999                 return;
12000         }
12001
12002         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12003             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12004             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
12005                 goto nla_put_failure;
12006
12007         genlmsg_end(msg, hdr);
12008
12009         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12010                                 NL80211_MCGRP_MLME, gfp);
12011         return;
12012
12013  nla_put_failure:
12014         genlmsg_cancel(msg, hdr);
12015         nlmsg_free(msg);
12016 }
12017
12018 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
12019                                         const u8* ie, u8 ie_len, gfp_t gfp)
12020 {
12021         struct wireless_dev *wdev = dev->ieee80211_ptr;
12022         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12023         struct sk_buff *msg;
12024         void *hdr;
12025
12026         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
12027                 return;
12028
12029         trace_cfg80211_notify_new_peer_candidate(dev, addr);
12030
12031         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12032         if (!msg)
12033                 return;
12034
12035         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
12036         if (!hdr) {
12037                 nlmsg_free(msg);
12038                 return;
12039         }
12040
12041         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12042             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12043             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
12044             (ie_len && ie &&
12045              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
12046                 goto nla_put_failure;
12047
12048         genlmsg_end(msg, hdr);
12049
12050         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12051                                 NL80211_MCGRP_MLME, gfp);
12052         return;
12053
12054  nla_put_failure:
12055         genlmsg_cancel(msg, hdr);
12056         nlmsg_free(msg);
12057 }
12058 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
12059
12060 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
12061                                  struct net_device *netdev, const u8 *addr,
12062                                  enum nl80211_key_type key_type, int key_id,
12063                                  const u8 *tsc, gfp_t gfp)
12064 {
12065         struct sk_buff *msg;
12066         void *hdr;
12067
12068         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12069         if (!msg)
12070                 return;
12071
12072         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
12073         if (!hdr) {
12074                 nlmsg_free(msg);
12075                 return;
12076         }
12077
12078         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12079             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12080             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
12081             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
12082             (key_id != -1 &&
12083              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
12084             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
12085                 goto nla_put_failure;
12086
12087         genlmsg_end(msg, hdr);
12088
12089         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12090                                 NL80211_MCGRP_MLME, gfp);
12091         return;
12092
12093  nla_put_failure:
12094         genlmsg_cancel(msg, hdr);
12095         nlmsg_free(msg);
12096 }
12097
12098 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
12099                                     struct ieee80211_channel *channel_before,
12100                                     struct ieee80211_channel *channel_after)
12101 {
12102         struct sk_buff *msg;
12103         void *hdr;
12104         struct nlattr *nl_freq;
12105
12106         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
12107         if (!msg)
12108                 return;
12109
12110         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
12111         if (!hdr) {
12112                 nlmsg_free(msg);
12113                 return;
12114         }
12115
12116         /*
12117          * Since we are applying the beacon hint to a wiphy we know its
12118          * wiphy_idx is valid
12119          */
12120         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
12121                 goto nla_put_failure;
12122
12123         /* Before */
12124         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
12125         if (!nl_freq)
12126                 goto nla_put_failure;
12127         if (nl80211_msg_put_channel(msg, channel_before, false))
12128                 goto nla_put_failure;
12129         nla_nest_end(msg, nl_freq);
12130
12131         /* After */
12132         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
12133         if (!nl_freq)
12134                 goto nla_put_failure;
12135         if (nl80211_msg_put_channel(msg, channel_after, false))
12136                 goto nla_put_failure;
12137         nla_nest_end(msg, nl_freq);
12138
12139         genlmsg_end(msg, hdr);
12140
12141         rcu_read_lock();
12142         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
12143                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
12144         rcu_read_unlock();
12145
12146         return;
12147
12148 nla_put_failure:
12149         genlmsg_cancel(msg, hdr);
12150         nlmsg_free(msg);
12151 }
12152
12153 static void nl80211_send_remain_on_chan_event(
12154         int cmd, struct cfg80211_registered_device *rdev,
12155         struct wireless_dev *wdev, u64 cookie,
12156         struct ieee80211_channel *chan,
12157         unsigned int duration, gfp_t gfp)
12158 {
12159         struct sk_buff *msg;
12160         void *hdr;
12161
12162         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12163         if (!msg)
12164                 return;
12165
12166         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
12167         if (!hdr) {
12168                 nlmsg_free(msg);
12169                 return;
12170         }
12171
12172         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12173             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12174                                          wdev->netdev->ifindex)) ||
12175             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
12176             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
12177             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
12178                         NL80211_CHAN_NO_HT) ||
12179             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
12180                 goto nla_put_failure;
12181
12182         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
12183             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
12184                 goto nla_put_failure;
12185
12186         genlmsg_end(msg, hdr);
12187
12188         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12189                                 NL80211_MCGRP_MLME, gfp);
12190         return;
12191
12192  nla_put_failure:
12193         genlmsg_cancel(msg, hdr);
12194         nlmsg_free(msg);
12195 }
12196
12197 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
12198                                struct ieee80211_channel *chan,
12199                                unsigned int duration, gfp_t gfp)
12200 {
12201         struct wiphy *wiphy = wdev->wiphy;
12202         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12203
12204         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
12205         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
12206                                           rdev, wdev, cookie, chan,
12207                                           duration, gfp);
12208 }
12209 EXPORT_SYMBOL(cfg80211_ready_on_channel);
12210
12211 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
12212                                         struct ieee80211_channel *chan,
12213                                         gfp_t gfp)
12214 {
12215         struct wiphy *wiphy = wdev->wiphy;
12216         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12217
12218         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
12219         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
12220                                           rdev, wdev, cookie, chan, 0, gfp);
12221 }
12222 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
12223
12224 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
12225                       struct station_info *sinfo, gfp_t gfp)
12226 {
12227         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
12228         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12229         struct sk_buff *msg;
12230
12231         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
12232
12233         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12234         if (!msg)
12235                 return;
12236
12237         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
12238                                  rdev, dev, mac_addr, sinfo) < 0) {
12239                 nlmsg_free(msg);
12240                 return;
12241         }
12242
12243         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12244                                 NL80211_MCGRP_MLME, gfp);
12245 }
12246 EXPORT_SYMBOL(cfg80211_new_sta);
12247
12248 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
12249                             struct station_info *sinfo, gfp_t gfp)
12250 {
12251         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
12252         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12253         struct sk_buff *msg;
12254         struct station_info empty_sinfo = {};
12255
12256         if (!sinfo)
12257                 sinfo = &empty_sinfo;
12258
12259         trace_cfg80211_del_sta(dev, mac_addr);
12260
12261         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12262         if (!msg)
12263                 return;
12264
12265         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
12266                                  rdev, dev, mac_addr, sinfo) < 0) {
12267                 nlmsg_free(msg);
12268                 return;
12269         }
12270
12271         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12272                                 NL80211_MCGRP_MLME, gfp);
12273 }
12274 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
12275
12276 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
12277                           enum nl80211_connect_failed_reason reason,
12278                           gfp_t gfp)
12279 {
12280         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
12281         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12282         struct sk_buff *msg;
12283         void *hdr;
12284
12285         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
12286         if (!msg)
12287                 return;
12288
12289         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
12290         if (!hdr) {
12291                 nlmsg_free(msg);
12292                 return;
12293         }
12294
12295         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12296             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
12297             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
12298                 goto nla_put_failure;
12299
12300         genlmsg_end(msg, hdr);
12301
12302         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12303                                 NL80211_MCGRP_MLME, gfp);
12304         return;
12305
12306  nla_put_failure:
12307         genlmsg_cancel(msg, hdr);
12308         nlmsg_free(msg);
12309 }
12310 EXPORT_SYMBOL(cfg80211_conn_failed);
12311
12312 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
12313                                        const u8 *addr, gfp_t gfp)
12314 {
12315         struct wireless_dev *wdev = dev->ieee80211_ptr;
12316         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12317         struct sk_buff *msg;
12318         void *hdr;
12319         u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
12320
12321         if (!nlportid)
12322                 return false;
12323
12324         msg = nlmsg_new(100, gfp);
12325         if (!msg)
12326                 return true;
12327
12328         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
12329         if (!hdr) {
12330                 nlmsg_free(msg);
12331                 return true;
12332         }
12333
12334         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12335             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12336             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
12337                 goto nla_put_failure;
12338
12339         genlmsg_end(msg, hdr);
12340         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12341         return true;
12342
12343  nla_put_failure:
12344         genlmsg_cancel(msg, hdr);
12345         nlmsg_free(msg);
12346         return true;
12347 }
12348
12349 bool cfg80211_rx_spurious_frame(struct net_device *dev,
12350                                 const u8 *addr, gfp_t gfp)
12351 {
12352         struct wireless_dev *wdev = dev->ieee80211_ptr;
12353         bool ret;
12354
12355         trace_cfg80211_rx_spurious_frame(dev, addr);
12356
12357         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
12358                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
12359                 trace_cfg80211_return_bool(false);
12360                 return false;
12361         }
12362         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
12363                                          addr, gfp);
12364         trace_cfg80211_return_bool(ret);
12365         return ret;
12366 }
12367 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
12368
12369 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
12370                                         const u8 *addr, gfp_t gfp)
12371 {
12372         struct wireless_dev *wdev = dev->ieee80211_ptr;
12373         bool ret;
12374
12375         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
12376
12377         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
12378                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
12379                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
12380                 trace_cfg80211_return_bool(false);
12381                 return false;
12382         }
12383         ret = __nl80211_unexpected_frame(dev,
12384                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
12385                                          addr, gfp);
12386         trace_cfg80211_return_bool(ret);
12387         return ret;
12388 }
12389 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
12390
12391 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
12392                       struct wireless_dev *wdev, u32 nlportid,
12393                       int freq, int sig_dbm,
12394                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
12395 {
12396         struct net_device *netdev = wdev->netdev;
12397         struct sk_buff *msg;
12398         void *hdr;
12399
12400         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12401         if (!msg)
12402                 return -ENOMEM;
12403
12404         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12405         if (!hdr) {
12406                 nlmsg_free(msg);
12407                 return -ENOMEM;
12408         }
12409
12410         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12411             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12412                                         netdev->ifindex)) ||
12413             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
12414             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
12415             (sig_dbm &&
12416              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12417             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
12418             (flags &&
12419              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
12420                 goto nla_put_failure;
12421
12422         genlmsg_end(msg, hdr);
12423
12424         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12425
12426  nla_put_failure:
12427         genlmsg_cancel(msg, hdr);
12428         nlmsg_free(msg);
12429         return -ENOBUFS;
12430 }
12431
12432 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
12433                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
12434 {
12435         struct wiphy *wiphy = wdev->wiphy;
12436         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12437         struct net_device *netdev = wdev->netdev;
12438         struct sk_buff *msg;
12439         void *hdr;
12440
12441         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
12442
12443         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12444         if (!msg)
12445                 return;
12446
12447         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
12448         if (!hdr) {
12449                 nlmsg_free(msg);
12450                 return;
12451         }
12452
12453         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12454             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12455                                    netdev->ifindex)) ||
12456             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
12457             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
12458             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12459             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
12460                 goto nla_put_failure;
12461
12462         genlmsg_end(msg, hdr);
12463
12464         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12465                                 NL80211_MCGRP_MLME, gfp);
12466         return;
12467
12468  nla_put_failure:
12469         genlmsg_cancel(msg, hdr);
12470         nlmsg_free(msg);
12471 }
12472 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
12473
12474 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
12475                                             const char *mac, gfp_t gfp)
12476 {
12477         struct wireless_dev *wdev = dev->ieee80211_ptr;
12478         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12479         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12480         void **cb;
12481
12482         if (!msg)
12483                 return NULL;
12484
12485         cb = (void **)msg->cb;
12486
12487         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
12488         if (!cb[0]) {
12489                 nlmsg_free(msg);
12490                 return NULL;
12491         }
12492
12493         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12494             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
12495                 goto nla_put_failure;
12496
12497         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
12498                 goto nla_put_failure;
12499
12500         cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
12501         if (!cb[1])
12502                 goto nla_put_failure;
12503
12504         cb[2] = rdev;
12505
12506         return msg;
12507  nla_put_failure:
12508         nlmsg_free(msg);
12509         return NULL;
12510 }
12511
12512 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
12513 {
12514         void **cb = (void **)msg->cb;
12515         struct cfg80211_registered_device *rdev = cb[2];
12516
12517         nla_nest_end(msg, cb[1]);
12518         genlmsg_end(msg, cb[0]);
12519
12520         memset(msg->cb, 0, sizeof(msg->cb));
12521
12522         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12523                                 NL80211_MCGRP_MLME, gfp);
12524 }
12525
12526 void cfg80211_cqm_rssi_notify(struct net_device *dev,
12527                               enum nl80211_cqm_rssi_threshold_event rssi_event,
12528                               gfp_t gfp)
12529 {
12530         struct sk_buff *msg;
12531
12532         trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
12533
12534         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
12535                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
12536                 return;
12537
12538         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12539         if (!msg)
12540                 return;
12541
12542         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
12543                         rssi_event))
12544                 goto nla_put_failure;
12545
12546         cfg80211_send_cqm(msg, gfp);
12547
12548         return;
12549
12550  nla_put_failure:
12551         nlmsg_free(msg);
12552 }
12553 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
12554
12555 void cfg80211_cqm_txe_notify(struct net_device *dev,
12556                              const u8 *peer, u32 num_packets,
12557                              u32 rate, u32 intvl, gfp_t gfp)
12558 {
12559         struct sk_buff *msg;
12560
12561         msg = cfg80211_prepare_cqm(dev, peer, gfp);
12562         if (!msg)
12563                 return;
12564
12565         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
12566                 goto nla_put_failure;
12567
12568         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
12569                 goto nla_put_failure;
12570
12571         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
12572                 goto nla_put_failure;
12573
12574         cfg80211_send_cqm(msg, gfp);
12575         return;
12576
12577  nla_put_failure:
12578         nlmsg_free(msg);
12579 }
12580 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
12581
12582 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
12583                                  const u8 *peer, u32 num_packets, gfp_t gfp)
12584 {
12585         struct sk_buff *msg;
12586
12587         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
12588
12589         msg = cfg80211_prepare_cqm(dev, peer, gfp);
12590         if (!msg)
12591                 return;
12592
12593         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
12594                 goto nla_put_failure;
12595
12596         cfg80211_send_cqm(msg, gfp);
12597         return;
12598
12599  nla_put_failure:
12600         nlmsg_free(msg);
12601 }
12602 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
12603
12604 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
12605 {
12606         struct sk_buff *msg;
12607
12608         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12609         if (!msg)
12610                 return;
12611
12612         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
12613                 goto nla_put_failure;
12614
12615         cfg80211_send_cqm(msg, gfp);
12616         return;
12617
12618  nla_put_failure:
12619         nlmsg_free(msg);
12620 }
12621 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
12622
12623 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
12624                                      struct net_device *netdev, const u8 *bssid,
12625                                      const u8 *replay_ctr, gfp_t gfp)
12626 {
12627         struct sk_buff *msg;
12628         struct nlattr *rekey_attr;
12629         void *hdr;
12630
12631         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12632         if (!msg)
12633                 return;
12634
12635         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
12636         if (!hdr) {
12637                 nlmsg_free(msg);
12638                 return;
12639         }
12640
12641         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12642             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12643             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
12644                 goto nla_put_failure;
12645
12646         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
12647         if (!rekey_attr)
12648                 goto nla_put_failure;
12649
12650         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
12651                     NL80211_REPLAY_CTR_LEN, replay_ctr))
12652                 goto nla_put_failure;
12653
12654         nla_nest_end(msg, rekey_attr);
12655
12656         genlmsg_end(msg, hdr);
12657
12658         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12659                                 NL80211_MCGRP_MLME, gfp);
12660         return;
12661
12662  nla_put_failure:
12663         genlmsg_cancel(msg, hdr);
12664         nlmsg_free(msg);
12665 }
12666
12667 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
12668                                const u8 *replay_ctr, gfp_t gfp)
12669 {
12670         struct wireless_dev *wdev = dev->ieee80211_ptr;
12671         struct wiphy *wiphy = wdev->wiphy;
12672         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12673
12674         trace_cfg80211_gtk_rekey_notify(dev, bssid);
12675         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
12676 }
12677 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
12678
12679 static void
12680 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
12681                                struct net_device *netdev, int index,
12682                                const u8 *bssid, bool preauth, gfp_t gfp)
12683 {
12684         struct sk_buff *msg;
12685         struct nlattr *attr;
12686         void *hdr;
12687
12688         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12689         if (!msg)
12690                 return;
12691
12692         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
12693         if (!hdr) {
12694                 nlmsg_free(msg);
12695                 return;
12696         }
12697
12698         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12699             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12700                 goto nla_put_failure;
12701
12702         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
12703         if (!attr)
12704                 goto nla_put_failure;
12705
12706         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
12707             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
12708             (preauth &&
12709              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
12710                 goto nla_put_failure;
12711
12712         nla_nest_end(msg, attr);
12713
12714         genlmsg_end(msg, hdr);
12715
12716         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12717                                 NL80211_MCGRP_MLME, gfp);
12718         return;
12719
12720  nla_put_failure:
12721         genlmsg_cancel(msg, hdr);
12722         nlmsg_free(msg);
12723 }
12724
12725 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
12726                                      const u8 *bssid, bool preauth, gfp_t gfp)
12727 {
12728         struct wireless_dev *wdev = dev->ieee80211_ptr;
12729         struct wiphy *wiphy = wdev->wiphy;
12730         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12731
12732         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
12733         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
12734 }
12735 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
12736
12737 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
12738                                      struct net_device *netdev,
12739                                      struct cfg80211_chan_def *chandef,
12740                                      gfp_t gfp,
12741                                      enum nl80211_commands notif,
12742                                      u8 count)
12743 {
12744         struct sk_buff *msg;
12745         void *hdr;
12746
12747         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12748         if (!msg)
12749                 return;
12750
12751         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
12752         if (!hdr) {
12753                 nlmsg_free(msg);
12754                 return;
12755         }
12756
12757         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12758                 goto nla_put_failure;
12759
12760         if (nl80211_send_chandef(msg, chandef))
12761                 goto nla_put_failure;
12762
12763         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
12764             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
12765                         goto nla_put_failure;
12766
12767         genlmsg_end(msg, hdr);
12768
12769         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12770                                 NL80211_MCGRP_MLME, gfp);
12771         return;
12772
12773  nla_put_failure:
12774         genlmsg_cancel(msg, hdr);
12775         nlmsg_free(msg);
12776 }
12777
12778 void cfg80211_ch_switch_notify(struct net_device *dev,
12779                                struct cfg80211_chan_def *chandef)
12780 {
12781         struct wireless_dev *wdev = dev->ieee80211_ptr;
12782         struct wiphy *wiphy = wdev->wiphy;
12783         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12784
12785         ASSERT_WDEV_LOCK(wdev);
12786
12787         trace_cfg80211_ch_switch_notify(dev, chandef);
12788
12789         wdev->chandef = *chandef;
12790         wdev->preset_chandef = *chandef;
12791         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12792                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
12793 }
12794 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
12795
12796 void cfg80211_ch_switch_started_notify(struct net_device *dev,
12797                                        struct cfg80211_chan_def *chandef,
12798                                        u8 count)
12799 {
12800         struct wireless_dev *wdev = dev->ieee80211_ptr;
12801         struct wiphy *wiphy = wdev->wiphy;
12802         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12803
12804         trace_cfg80211_ch_switch_started_notify(dev, chandef);
12805
12806         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12807                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
12808 }
12809 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
12810
12811 void
12812 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
12813                      const struct cfg80211_chan_def *chandef,
12814                      enum nl80211_radar_event event,
12815                      struct net_device *netdev, gfp_t gfp)
12816 {
12817         struct sk_buff *msg;
12818         void *hdr;
12819
12820         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12821         if (!msg)
12822                 return;
12823
12824         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
12825         if (!hdr) {
12826                 nlmsg_free(msg);
12827                 return;
12828         }
12829
12830         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
12831                 goto nla_put_failure;
12832
12833         /* NOP and radar events don't need a netdev parameter */
12834         if (netdev) {
12835                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
12836
12837                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12838                     nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12839                         goto nla_put_failure;
12840         }
12841
12842         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
12843                 goto nla_put_failure;
12844
12845         if (nl80211_send_chandef(msg, chandef))
12846                 goto nla_put_failure;
12847
12848         genlmsg_end(msg, hdr);
12849
12850         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12851                                 NL80211_MCGRP_MLME, gfp);
12852         return;
12853
12854  nla_put_failure:
12855         genlmsg_cancel(msg, hdr);
12856         nlmsg_free(msg);
12857 }
12858
12859 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
12860                            u64 cookie, bool acked, gfp_t gfp)
12861 {
12862         struct wireless_dev *wdev = dev->ieee80211_ptr;
12863         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12864         struct sk_buff *msg;
12865         void *hdr;
12866
12867         trace_cfg80211_probe_status(dev, addr, cookie, acked);
12868
12869         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12870
12871         if (!msg)
12872                 return;
12873
12874         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
12875         if (!hdr) {
12876                 nlmsg_free(msg);
12877                 return;
12878         }
12879
12880         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12881             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12882             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
12883             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12884             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
12885                 goto nla_put_failure;
12886
12887         genlmsg_end(msg, hdr);
12888
12889         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12890                                 NL80211_MCGRP_MLME, gfp);
12891         return;
12892
12893  nla_put_failure:
12894         genlmsg_cancel(msg, hdr);
12895         nlmsg_free(msg);
12896 }
12897 EXPORT_SYMBOL(cfg80211_probe_status);
12898
12899 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
12900                                  const u8 *frame, size_t len,
12901                                  int freq, int sig_dbm)
12902 {
12903         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12904         struct sk_buff *msg;
12905         void *hdr;
12906         struct cfg80211_beacon_registration *reg;
12907
12908         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
12909
12910         spin_lock_bh(&rdev->beacon_registrations_lock);
12911         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12912                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
12913                 if (!msg) {
12914                         spin_unlock_bh(&rdev->beacon_registrations_lock);
12915                         return;
12916                 }
12917
12918                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12919                 if (!hdr)
12920                         goto nla_put_failure;
12921
12922                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12923                     (freq &&
12924                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
12925                     (sig_dbm &&
12926                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12927                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
12928                         goto nla_put_failure;
12929
12930                 genlmsg_end(msg, hdr);
12931
12932                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
12933         }
12934         spin_unlock_bh(&rdev->beacon_registrations_lock);
12935         return;
12936
12937  nla_put_failure:
12938         spin_unlock_bh(&rdev->beacon_registrations_lock);
12939         if (hdr)
12940                 genlmsg_cancel(msg, hdr);
12941         nlmsg_free(msg);
12942 }
12943 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
12944
12945 #ifdef CONFIG_PM
12946 static int cfg80211_net_detect_results(struct sk_buff *msg,
12947                                        struct cfg80211_wowlan_wakeup *wakeup)
12948 {
12949         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
12950         struct nlattr *nl_results, *nl_match, *nl_freqs;
12951         int i, j;
12952
12953         nl_results = nla_nest_start(
12954                 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
12955         if (!nl_results)
12956                 return -EMSGSIZE;
12957
12958         for (i = 0; i < nd->n_matches; i++) {
12959                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
12960
12961                 nl_match = nla_nest_start(msg, i);
12962                 if (!nl_match)
12963                         break;
12964
12965                 /* The SSID attribute is optional in nl80211, but for
12966                  * simplicity reasons it's always present in the
12967                  * cfg80211 structure.  If a driver can't pass the
12968                  * SSID, that needs to be changed.  A zero length SSID
12969                  * is still a valid SSID (wildcard), so it cannot be
12970                  * used for this purpose.
12971                  */
12972                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
12973                             match->ssid.ssid)) {
12974                         nla_nest_cancel(msg, nl_match);
12975                         goto out;
12976                 }
12977
12978                 if (match->n_channels) {
12979                         nl_freqs = nla_nest_start(
12980                                 msg, NL80211_ATTR_SCAN_FREQUENCIES);
12981                         if (!nl_freqs) {
12982                                 nla_nest_cancel(msg, nl_match);
12983                                 goto out;
12984                         }
12985
12986                         for (j = 0; j < match->n_channels; j++) {
12987                                 if (nla_put_u32(msg, j, match->channels[j])) {
12988                                         nla_nest_cancel(msg, nl_freqs);
12989                                         nla_nest_cancel(msg, nl_match);
12990                                         goto out;
12991                                 }
12992                         }
12993
12994                         nla_nest_end(msg, nl_freqs);
12995                 }
12996
12997                 nla_nest_end(msg, nl_match);
12998         }
12999
13000 out:
13001         nla_nest_end(msg, nl_results);
13002         return 0;
13003 }
13004
13005 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
13006                                    struct cfg80211_wowlan_wakeup *wakeup,
13007                                    gfp_t gfp)
13008 {
13009         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13010         struct sk_buff *msg;
13011         void *hdr;
13012         int size = 200;
13013
13014         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
13015
13016         if (wakeup)
13017                 size += wakeup->packet_present_len;
13018
13019         msg = nlmsg_new(size, gfp);
13020         if (!msg)
13021                 return;
13022
13023         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
13024         if (!hdr)
13025                 goto free_msg;
13026
13027         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13028             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
13029                 goto free_msg;
13030
13031         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13032                                         wdev->netdev->ifindex))
13033                 goto free_msg;
13034
13035         if (wakeup) {
13036                 struct nlattr *reasons;
13037
13038                 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
13039                 if (!reasons)
13040                         goto free_msg;
13041
13042                 if (wakeup->disconnect &&
13043                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
13044                         goto free_msg;
13045                 if (wakeup->magic_pkt &&
13046                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
13047                         goto free_msg;
13048                 if (wakeup->gtk_rekey_failure &&
13049                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
13050                         goto free_msg;
13051                 if (wakeup->eap_identity_req &&
13052                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
13053                         goto free_msg;
13054                 if (wakeup->four_way_handshake &&
13055                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
13056                         goto free_msg;
13057                 if (wakeup->rfkill_release &&
13058                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
13059                         goto free_msg;
13060
13061                 if (wakeup->pattern_idx >= 0 &&
13062                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
13063                                 wakeup->pattern_idx))
13064                         goto free_msg;
13065
13066                 if (wakeup->tcp_match &&
13067                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
13068                         goto free_msg;
13069
13070                 if (wakeup->tcp_connlost &&
13071                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
13072                         goto free_msg;
13073
13074                 if (wakeup->tcp_nomoretokens &&
13075                     nla_put_flag(msg,
13076                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
13077                         goto free_msg;
13078
13079                 if (wakeup->packet) {
13080                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
13081                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
13082
13083                         if (!wakeup->packet_80211) {
13084                                 pkt_attr =
13085                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
13086                                 len_attr =
13087                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
13088                         }
13089
13090                         if (wakeup->packet_len &&
13091                             nla_put_u32(msg, len_attr, wakeup->packet_len))
13092                                 goto free_msg;
13093
13094                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
13095                                     wakeup->packet))
13096                                 goto free_msg;
13097                 }
13098
13099                 if (wakeup->net_detect &&
13100                     cfg80211_net_detect_results(msg, wakeup))
13101                                 goto free_msg;
13102
13103                 nla_nest_end(msg, reasons);
13104         }
13105
13106         genlmsg_end(msg, hdr);
13107
13108         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13109                                 NL80211_MCGRP_MLME, gfp);
13110         return;
13111
13112  free_msg:
13113         nlmsg_free(msg);
13114 }
13115 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
13116 #endif
13117
13118 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
13119                                 enum nl80211_tdls_operation oper,
13120                                 u16 reason_code, gfp_t gfp)
13121 {
13122         struct wireless_dev *wdev = dev->ieee80211_ptr;
13123         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13124         struct sk_buff *msg;
13125         void *hdr;
13126
13127         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
13128                                          reason_code);
13129
13130         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13131         if (!msg)
13132                 return;
13133
13134         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
13135         if (!hdr) {
13136                 nlmsg_free(msg);
13137                 return;
13138         }
13139
13140         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13141             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13142             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
13143             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
13144             (reason_code > 0 &&
13145              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
13146                 goto nla_put_failure;
13147
13148         genlmsg_end(msg, hdr);
13149
13150         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13151                                 NL80211_MCGRP_MLME, gfp);
13152         return;
13153
13154  nla_put_failure:
13155         genlmsg_cancel(msg, hdr);
13156         nlmsg_free(msg);
13157 }
13158 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
13159
13160 static int nl80211_netlink_notify(struct notifier_block * nb,
13161                                   unsigned long state,
13162                                   void *_notify)
13163 {
13164         struct netlink_notify *notify = _notify;
13165         struct cfg80211_registered_device *rdev;
13166         struct wireless_dev *wdev;
13167         struct cfg80211_beacon_registration *reg, *tmp;
13168
13169         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
13170                 return NOTIFY_DONE;
13171
13172         rcu_read_lock();
13173
13174         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
13175                 bool schedule_destroy_work = false;
13176                 struct cfg80211_sched_scan_request *sched_scan_req =
13177                         rcu_dereference(rdev->sched_scan_req);
13178
13179                 if (sched_scan_req && notify->portid &&
13180                     sched_scan_req->owner_nlportid == notify->portid) {
13181                         sched_scan_req->owner_nlportid = 0;
13182
13183                         if (rdev->ops->sched_scan_stop &&
13184                             rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
13185                                 schedule_work(&rdev->sched_scan_stop_wk);
13186                 }
13187
13188                 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
13189                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
13190
13191                         if (wdev->owner_nlportid == notify->portid)
13192                                 schedule_destroy_work = true;
13193                 }
13194
13195                 spin_lock_bh(&rdev->beacon_registrations_lock);
13196                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
13197                                          list) {
13198                         if (reg->nlportid == notify->portid) {
13199                                 list_del(&reg->list);
13200                                 kfree(reg);
13201                                 break;
13202                         }
13203                 }
13204                 spin_unlock_bh(&rdev->beacon_registrations_lock);
13205
13206                 if (schedule_destroy_work) {
13207                         struct cfg80211_iface_destroy *destroy;
13208
13209                         destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
13210                         if (destroy) {
13211                                 destroy->nlportid = notify->portid;
13212                                 spin_lock(&rdev->destroy_list_lock);
13213                                 list_add(&destroy->list, &rdev->destroy_list);
13214                                 spin_unlock(&rdev->destroy_list_lock);
13215                                 schedule_work(&rdev->destroy_work);
13216                         }
13217                 }
13218         }
13219
13220         rcu_read_unlock();
13221
13222         /*
13223          * It is possible that the user space process that is controlling the
13224          * indoor setting disappeared, so notify the regulatory core.
13225          */
13226         regulatory_netlink_notify(notify->portid);
13227         return NOTIFY_OK;
13228 }
13229
13230 static struct notifier_block nl80211_netlink_notifier = {
13231         .notifier_call = nl80211_netlink_notify,
13232 };
13233
13234 void cfg80211_ft_event(struct net_device *netdev,
13235                        struct cfg80211_ft_event_params *ft_event)
13236 {
13237         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
13238         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13239         struct sk_buff *msg;
13240         void *hdr;
13241
13242         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
13243
13244         if (!ft_event->target_ap)
13245                 return;
13246
13247         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13248         if (!msg)
13249                 return;
13250
13251         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
13252         if (!hdr)
13253                 goto out;
13254
13255         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13256             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13257             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
13258                 goto out;
13259
13260         if (ft_event->ies &&
13261             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
13262                 goto out;
13263         if (ft_event->ric_ies &&
13264             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
13265                     ft_event->ric_ies))
13266                 goto out;
13267
13268         genlmsg_end(msg, hdr);
13269
13270         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13271                                 NL80211_MCGRP_MLME, GFP_KERNEL);
13272         return;
13273  out:
13274         nlmsg_free(msg);
13275 }
13276 EXPORT_SYMBOL(cfg80211_ft_event);
13277
13278 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
13279 {
13280         struct cfg80211_registered_device *rdev;
13281         struct sk_buff *msg;
13282         void *hdr;
13283         u32 nlportid;
13284
13285         rdev = wiphy_to_rdev(wdev->wiphy);
13286         if (!rdev->crit_proto_nlportid)
13287                 return;
13288
13289         nlportid = rdev->crit_proto_nlportid;
13290         rdev->crit_proto_nlportid = 0;
13291
13292         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13293         if (!msg)
13294                 return;
13295
13296         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
13297         if (!hdr)
13298                 goto nla_put_failure;
13299
13300         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13301             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
13302                 goto nla_put_failure;
13303
13304         genlmsg_end(msg, hdr);
13305
13306         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
13307         return;
13308
13309  nla_put_failure:
13310         if (hdr)
13311                 genlmsg_cancel(msg, hdr);
13312         nlmsg_free(msg);
13313
13314 }
13315 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
13316
13317 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
13318 {
13319         struct wiphy *wiphy = wdev->wiphy;
13320         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13321         struct sk_buff *msg;
13322         void *hdr;
13323
13324         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13325         if (!msg)
13326                 return;
13327
13328         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
13329         if (!hdr)
13330                 goto out;
13331
13332         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13333             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
13334             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
13335                 goto out;
13336
13337         genlmsg_end(msg, hdr);
13338
13339         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
13340                                 NL80211_MCGRP_MLME, GFP_KERNEL);
13341         return;
13342  out:
13343         nlmsg_free(msg);
13344 }
13345
13346 /* initialisation/exit functions */
13347
13348 int nl80211_init(void)
13349 {
13350         int err;
13351
13352         err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
13353                                                    nl80211_mcgrps);
13354         if (err)
13355                 return err;
13356
13357         err = netlink_register_notifier(&nl80211_netlink_notifier);
13358         if (err)
13359                 goto err_out;
13360
13361         return 0;
13362  err_out:
13363         genl_unregister_family(&nl80211_fam);
13364         return err;
13365 }
13366
13367 void nl80211_exit(void)
13368 {
13369         netlink_unregister_notifier(&nl80211_netlink_notifier);
13370         genl_unregister_family(&nl80211_fam);
13371 }