src/drivers/driver_nl80211.c

   1 /*
   2  * Driver interaction with Linux nl80211/cfg80211
   3  * Copyright (c) 2002-2012, Jouni Malinen <j@w1.fi>
   4  * Copyright (c) 2003-2004, Instant802 Networks, Inc.
   5  * Copyright (c) 2005-2006, Devicescape Software, Inc.
   6  * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net>
   7  * Copyright (c) 2009-2010, Atheros Communications
   8  *
   9  * This software may be distributed under the terms of the BSD license.
  10  * See README for more details.
  11  */
  12
  13 #include "includes.h"
  14 #include <sys/ioctl.h>
  15 #include <sys/types.h>
  16 #include <sys/stat.h>
  17 #include <fcntl.h>
  18 #include <net/if.h>
  19 #include <netlink/genl/genl.h>
  20 #include <netlink/genl/family.h>
  21 #include <netlink/genl/ctrl.h>
  22 #include <linux/rtnetlink.h>
  23 #include <netpacket/packet.h>
  24 #include <linux/filter.h>
  25 #include <linux/errqueue.h>
  26 #include "nl80211_copy.h"
  27
  28 #include "common.h"
  29 #include "eloop.h"
  30 #include "utils/list.h"
  31 #include "common/ieee802_11_defs.h"
  32 #include "common/ieee802_11_common.h"
  33 #include "l2_packet/l2_packet.h"
  34 #include "netlink.h"
  35 #include "linux_ioctl.h"
  36 #include "radiotap.h"
  37 #include "radiotap_iter.h"
  38 #include "rfkill.h"
  39 #include "driver.h"
  40
  41 #ifndef SO_WIFI_STATUS
  42 # if defined(__sparc__)
  43 #  define SO_WIFI_STATUS        0x0025
  44 # elif defined(__parisc__)
  45 #  define SO_WIFI_STATUS        0x4022
  46 # else
  47 #  define SO_WIFI_STATUS        41
  48 # endif
  49
  50 # define SCM_WIFI_STATUS        SO_WIFI_STATUS
  51 #endif
  52
  53 #ifndef SO_EE_ORIGIN_TXSTATUS
  54 #define SO_EE_ORIGIN_TXSTATUS   4
  55 #endif
  56
  57 #ifndef PACKET_TX_TIMESTAMP
  58 #define PACKET_TX_TIMESTAMP     16
  59 #endif
  60
  61 #ifdef ANDROID
  62 #include "android_drv.h"
  63 #endif /* ANDROID */
  64 #ifdef CONFIG_LIBNL20
  65 /* libnl 2.0 compatibility code */
  66 #define nl_handle nl_sock
  67 #define nl80211_handle_alloc nl_socket_alloc_cb
  68 #define nl80211_handle_destroy nl_socket_free
  69 #else
  70 /*
  71  * libnl 1.1 has a bug, it tries to allocate socket numbers densely
  72  * but when you free a socket again it will mess up its bitmap and
  73  * and use the wrong number the next time it needs a socket ID.
  74  * Therefore, we wrap the handle alloc/destroy and add our own pid
  75  * accounting.
  76  */
  77 static uint32_t port_bitmap[32] = { 0 };
  78
  79 static struct nl_handle *nl80211_handle_alloc(void *cb)
  80 {
  81         struct nl_handle *handle;
  82         uint32_t pid = getpid() & 0x3FFFFF;
  83         int i;
  84
  85         handle = nl_handle_alloc_cb(cb);
  86
  87         for (i = 0; i < 1024; i++) {
  88                 if (port_bitmap[i / 32] & (1 << (i % 32)))
  89                         continue;
  90                 port_bitmap[i / 32] |= 1 << (i % 32);
  91                 pid += i << 22;
  92                 break;
  93         }
  94
  95         nl_socket_set_local_port(handle, pid);
  96
  97         return handle;
  98 }
  99
 100 static void nl80211_handle_destroy(struct nl_handle *handle)
 101 {
 102         uint32_t port = nl_socket_get_local_port(handle);
 103
 104         port >>= 22;
 105         port_bitmap[port / 32] &= ~(1 << (port % 32));
 106
 107         nl_handle_destroy(handle);
 108 }
 109 #endif /* CONFIG_LIBNL20 */
 110
 111
 112 static struct nl_handle * nl_create_handle(struct nl_cb *cb, const char *dbg)
 113 {
 114         struct nl_handle *handle;
 115
 116         handle = nl80211_handle_alloc(cb);
 117         if (handle == NULL) {
 118                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
 119                            "callbacks (%s)", dbg);
 120                 return NULL;
 121         }
 122
 123         if (genl_connect(handle)) {
 124                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
 125                            "netlink (%s)", dbg);
 126                 nl80211_handle_destroy(handle);
 127                 return NULL;
 128         }
 129
 130         return handle;
 131 }
 132
 133
 134 static void nl_destroy_handles(struct nl_handle **handle)
 135 {
 136         if (*handle == NULL)
 137                 return;
 138         nl80211_handle_destroy(*handle);
 139         *handle = NULL;
 140 }
 141
 142
 143 #ifndef IFF_LOWER_UP
 144 #define IFF_LOWER_UP   0x10000         /* driver signals L1 up         */
 145 #endif
 146 #ifndef IFF_DORMANT
 147 #define IFF_DORMANT    0x20000         /* driver signals dormant       */
 148 #endif
 149
 150 #ifndef IF_OPER_DORMANT
 151 #define IF_OPER_DORMANT 5
 152 #endif
 153 #ifndef IF_OPER_UP
 154 #define IF_OPER_UP 6
 155 #endif
 156
 157 struct nl80211_global {
 158         struct dl_list interfaces;
 159         int if_add_ifindex;
 160         struct netlink_data *netlink;
 161         struct nl_cb *nl_cb;
 162         struct nl_handle *nl;
 163         int nl80211_id;
 164         int ioctl_sock; /* socket for ioctl() use */
 165
 166         struct nl_handle *nl_event;
 167 };
 168
 169 struct nl80211_wiphy_data {
 170         struct dl_list list;
 171         struct dl_list bsss;
 172         struct dl_list drvs;
 173
 174         struct nl_handle *nl_beacons;
 175         struct nl_cb *nl_cb;
 176
 177         int wiphy_idx;
 178 };
 179
 180 static void nl80211_global_deinit(void *priv);
 181 static void wpa_driver_nl80211_deinit(void *priv);
 182
 183 struct i802_bss {
 184         struct wpa_driver_nl80211_data *drv;
 185         struct i802_bss *next;
 186         int ifindex;
 187         char ifname[IFNAMSIZ + 1];
 188         char brname[IFNAMSIZ];
 189         unsigned int beacon_set:1;
 190         unsigned int added_if_into_bridge:1;
 191         unsigned int added_bridge:1;
 192         unsigned int in_deinit:1;
 193
 194         u8 addr[ETH_ALEN];
 195
 196         int freq;
 197
 198         struct nl_handle *nl_preq, *nl_mgmt;
 199         struct nl_cb *nl_cb;
 200
 201         struct nl80211_wiphy_data *wiphy_data;
 202         struct dl_list wiphy_list;
 203 };
 204
 205 struct wpa_driver_nl80211_data {
 206         struct nl80211_global *global;
 207         struct dl_list list;
 208         struct dl_list wiphy_list;
 209         char phyname[32];
 210         void *ctx;
 211         int ifindex;
 212         int if_removed;
 213         int if_disabled;
 214         int ignore_if_down_event;
 215         struct rfkill_data *rfkill;
 216         struct wpa_driver_capa capa;
 217         int has_capability;
 218
 219         int operstate;
 220
 221         int scan_complete_events;
 222
 223         struct nl_cb *nl_cb;
 224
 225         u8 auth_bssid[ETH_ALEN];
 226         u8 bssid[ETH_ALEN];
 227         int associated;
 228         u8 ssid[32];
 229         size_t ssid_len;
 230         enum nl80211_iftype nlmode;
 231         enum nl80211_iftype ap_scan_as_station;
 232         unsigned int assoc_freq;
 233
 234         int monitor_sock;
 235         int monitor_ifidx;
 236         int monitor_refcount;
 237
 238         unsigned int disabled_11b_rates:1;
 239         unsigned int pending_remain_on_chan:1;
 240         unsigned int in_interface_list:1;
 241         unsigned int device_ap_sme:1;
 242         unsigned int poll_command_supported:1;
 243         unsigned int data_tx_status:1;
 244         unsigned int scan_for_auth:1;
 245         unsigned int retry_auth:1;
 246         unsigned int use_monitor:1;
 247
 248         u64 remain_on_chan_cookie;
 249         u64 send_action_cookie;
 250
 251         unsigned int last_mgmt_freq;
 252
 253         struct wpa_driver_scan_filter *filter_ssids;
 254         size_t num_filter_ssids;
 255
 256         struct i802_bss first_bss;
 257
 258         int eapol_tx_sock;
 259
 260 #ifdef HOSTAPD
 261         int eapol_sock; /* socket for EAPOL frames */
 262
 263         int default_if_indices[16];
 264         int *if_indices;
 265         int num_if_indices;
 266
 267         int last_freq;
 268         int last_freq_ht;
 269 #endif /* HOSTAPD */
 270
 271         /* From failed authentication command */
 272         int auth_freq;
 273         u8 auth_bssid_[ETH_ALEN];
 274         u8 auth_ssid[32];
 275         size_t auth_ssid_len;
 276         int auth_alg;
 277         u8 *auth_ie;
 278         size_t auth_ie_len;
 279         u8 auth_wep_key[4][16];
 280         size_t auth_wep_key_len[4];
 281         int auth_wep_tx_keyidx;
 282         int auth_local_state_change;
 283         int auth_p2p;
 284 };
 285
 286
 287 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
 288                                             void *timeout_ctx);
 289 static int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
 290                                        enum nl80211_iftype nlmode);
 291 static int
 292 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
 293 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
 294                                    const u8 *addr, int cmd, u16 reason_code,
 295                                    int local_state_change);
 296 static void nl80211_remove_monitor_interface(
 297         struct wpa_driver_nl80211_data *drv);
 298 static int nl80211_send_frame_cmd(struct i802_bss *bss,
 299                                   unsigned int freq, unsigned int wait,
 300                                   const u8 *buf, size_t buf_len, u64 *cookie,
 301                                   int no_cck, int no_ack, int offchanok);
 302 static int wpa_driver_nl80211_probe_req_report(void *priv, int report);
 303 #ifdef ANDROID
 304 static int android_pno_start(struct i802_bss *bss,
 305                              struct wpa_driver_scan_params *params);
 306 static int android_pno_stop(struct i802_bss *bss);
 307 #endif /* ANDROID */
 308 #ifdef ANDROID_P2P
 309 static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv,
 310                                   enum wpa_event_type type,
 311                                   const u8 *frame, size_t len);
 312 int wpa_driver_set_p2p_noa(void *priv, u8 count, int start, int duration);
 313 int wpa_driver_get_p2p_noa(void *priv, u8 *buf, size_t len);
 314 int wpa_driver_set_p2p_ps(void *priv, int legacy_ps, int opp_ps, int ctwindow);
 315 int wpa_driver_set_ap_wps_p2p_ie(void *priv, const struct wpabuf *beacon,
 316                                   const struct wpabuf *proberesp,
 317                                   const struct wpabuf *assocresp);
 318
 319 #endif
 320 #ifdef HOSTAPD
 321 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 322 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 323 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 324 static int wpa_driver_nl80211_if_remove(void *priv,
 325                                         enum wpa_driver_if_type type,
 326                                         const char *ifname);
 327 #else /* HOSTAPD */
 328 static inline void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
 329 {
 330 }
 331
 332 static inline void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
 333 {
 334 }
 335
 336 static inline int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
 337 {
 338         return 0;
 339 }
 340 #endif /* HOSTAPD */
 341 #ifdef ANDROID
 342 extern int wpa_driver_nl80211_driver_cmd(void *priv, char *cmd, char *buf,
 343                                          size_t buf_len);
 344 #endif
 345
 346 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
 347 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
 348                                      int ifindex, int disabled);
 349
 350 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv);
 351 static int wpa_driver_nl80211_authenticate_retry(
 352         struct wpa_driver_nl80211_data *drv);
 353
 354
 355 static int is_ap_interface(enum nl80211_iftype nlmode)
 356 {
 357         return (nlmode == NL80211_IFTYPE_AP ||
 358                 nlmode == NL80211_IFTYPE_P2P_GO);
 359 }
 360
 361
 362 static int is_sta_interface(enum nl80211_iftype nlmode)
 363 {
 364         return (nlmode == NL80211_IFTYPE_STATION ||
 365                 nlmode == NL80211_IFTYPE_P2P_CLIENT);
 366 }
 367
 368
 369 static int is_p2p_interface(enum nl80211_iftype nlmode)
 370 {
 371         return (nlmode == NL80211_IFTYPE_P2P_CLIENT ||
 372                 nlmode == NL80211_IFTYPE_P2P_GO);
 373 }
 374
 375
 376 struct nl80211_bss_info_arg {
 377         struct wpa_driver_nl80211_data *drv;
 378         struct wpa_scan_results *res;
 379         unsigned int assoc_freq;
 380         u8 assoc_bssid[ETH_ALEN];
 381 };
 382
 383 static int bss_info_handler(struct nl_msg *msg, void *arg);
 384
 385
 386 /* nl80211 code */
 387 static int ack_handler(struct nl_msg *msg, void *arg)
 388 {
 389         int *err = arg;
 390         *err = 0;
 391         return NL_STOP;
 392 }
 393
 394 static int finish_handler(struct nl_msg *msg, void *arg)
 395 {
 396         int *ret = arg;
 397         *ret = 0;
 398         return NL_SKIP;
 399 }
 400
 401 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
 402                          void *arg)
 403 {
 404         int *ret = arg;
 405         *ret = err->error;
 406         return NL_SKIP;
 407 }
 408
 409
 410 static int no_seq_check(struct nl_msg *msg, void *arg)
 411 {
 412         return NL_OK;
 413 }
 414
 415
 416 static int send_and_recv(struct nl80211_global *global,
 417                          struct nl_handle *nl_handle, struct nl_msg *msg,
 418                          int (*valid_handler)(struct nl_msg *, void *),
 419                          void *valid_data)
 420 {
 421         struct nl_cb *cb;
 422         int err = -ENOMEM;
 423
 424         cb = nl_cb_clone(global->nl_cb);
 425         if (!cb)
 426                 goto out;
 427
 428         err = nl_send_auto_complete(nl_handle, msg);
 429         if (err < 0)
 430                 goto out;
 431
 432         err = 1;
 433
 434         nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
 435         nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
 436         nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
 437
 438         if (valid_handler)
 439                 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
 440                           valid_handler, valid_data);
 441
 442         while (err > 0)
 443                 nl_recvmsgs(nl_handle, cb);
 444  out:
 445         nl_cb_put(cb);
 446         nlmsg_free(msg);
 447         return err;
 448 }
 449
 450
 451 static int send_and_recv_msgs_global(struct nl80211_global *global,
 452                                      struct nl_msg *msg,
 453                                      int (*valid_handler)(struct nl_msg *, void *),
 454                                      void *valid_data)
 455 {
 456         return send_and_recv(global, global->nl, msg, valid_handler,
 457                              valid_data);
 458 }
 459
 460
 461 int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
 462                               struct nl_msg *msg,
 463                               int (*valid_handler)(struct nl_msg *, void *),
 464                               void *valid_data)
 465 {
 466         return send_and_recv(drv->global, drv->global->nl, msg,
 467                              valid_handler, valid_data);
 468 }
 469
 470
 471 struct family_data {
 472         const char *group;
 473         int id;
 474 };
 475
 476
 477 static int family_handler(struct nl_msg *msg, void *arg)
 478 {
 479         struct family_data *res = arg;
 480         struct nlattr *tb[CTRL_ATTR_MAX + 1];
 481         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 482         struct nlattr *mcgrp;
 483         int i;
 484
 485         nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 486                   genlmsg_attrlen(gnlh, 0), NULL);
 487         if (!tb[CTRL_ATTR_MCAST_GROUPS])
 488                 return NL_SKIP;
 489
 490         nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
 491                 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
 492                 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
 493                           nla_len(mcgrp), NULL);
 494                 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
 495                     !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
 496                     os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
 497                                res->group,
 498                                nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
 499                         continue;
 500                 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
 501                 break;
 502         };
 503
 504         return NL_SKIP;
 505 }
 506
 507
 508 static int nl_get_multicast_id(struct nl80211_global *global,
 509                                const char *family, const char *group)
 510 {
 511         struct nl_msg *msg;
 512         int ret = -1;
 513         struct family_data res = { group, -ENOENT };
 514
 515         msg = nlmsg_alloc();
 516         if (!msg)
 517                 return -ENOMEM;
 518         genlmsg_put(msg, 0, 0, genl_ctrl_resolve(global->nl, "nlctrl"),
 519                     0, 0, CTRL_CMD_GETFAMILY, 0);
 520         NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
 521
 522         ret = send_and_recv_msgs_global(global, msg, family_handler, &res);
 523         msg = NULL;
 524         if (ret == 0)
 525                 ret = res.id;
 526
 527 nla_put_failure:
 528         nlmsg_free(msg);
 529         return ret;
 530 }
 531
 532
 533 static void * nl80211_cmd(struct wpa_driver_nl80211_data *drv,
 534                           struct nl_msg *msg, int flags, uint8_t cmd)
 535 {
 536         return genlmsg_put(msg, 0, 0, drv->global->nl80211_id,
 537                            0, flags, cmd, 0);
 538 }
 539
 540
 541 struct wiphy_idx_data {
 542         int wiphy_idx;
 543 };
 544
 545
 546 static int netdev_info_handler(struct nl_msg *msg, void *arg)
 547 {
 548         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 549         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 550         struct wiphy_idx_data *info = arg;
 551
 552         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 553                   genlmsg_attrlen(gnlh, 0), NULL);
 554
 555         if (tb[NL80211_ATTR_WIPHY])
 556                 info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
 557
 558         return NL_SKIP;
 559 }
 560
 561
 562 static int nl80211_get_wiphy_index(struct i802_bss *bss)
 563 {
 564         struct nl_msg *msg;
 565         struct wiphy_idx_data data = {
 566                 .wiphy_idx = -1,
 567         };
 568
 569         msg = nlmsg_alloc();
 570         if (!msg)
 571                 return -1;
 572
 573         nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_GET_INTERFACE);
 574
 575         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
 576
 577         if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0)
 578                 return data.wiphy_idx;
 579         msg = NULL;
 580 nla_put_failure:
 581         nlmsg_free(msg);
 582         return -1;
 583 }
 584
 585
 586 static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv,
 587                                     struct nl80211_wiphy_data *w)
 588 {
 589         struct nl_msg *msg;
 590         int ret = -1;
 591
 592         msg = nlmsg_alloc();
 593         if (!msg)
 594                 return -1;
 595
 596         nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS);
 597
 598         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx);
 599
 600         ret = send_and_recv(drv->global, w->nl_beacons, msg, NULL, NULL);
 601         msg = NULL;
 602         if (ret) {
 603                 wpa_printf(MSG_DEBUG, "nl80211: Register beacons command "
 604                            "failed: ret=%d (%s)",
 605                            ret, strerror(-ret));
 606                 goto nla_put_failure;
 607         }
 608         ret = 0;
 609 nla_put_failure:
 610         nlmsg_free(msg);
 611         return ret;
 612 }
 613
 614
 615 static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle)
 616 {
 617         struct nl80211_wiphy_data *w = eloop_ctx;
 618
 619         wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available");
 620
 621         nl_recvmsgs(handle, w->nl_cb);
 622 }
 623
 624
 625 static int process_beacon_event(struct nl_msg *msg, void *arg)
 626 {
 627         struct nl80211_wiphy_data *w = arg;
 628         struct wpa_driver_nl80211_data *drv;
 629         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 630         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 631         union wpa_event_data event;
 632
 633         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 634                   genlmsg_attrlen(gnlh, 0), NULL);
 635
 636         if (gnlh->cmd != NL80211_CMD_FRAME) {
 637                 wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)",
 638                            gnlh->cmd);
 639                 return NL_SKIP;
 640         }
 641
 642         if (!tb[NL80211_ATTR_FRAME])
 643                 return NL_SKIP;
 644
 645         dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data,
 646                          wiphy_list) {
 647                 os_memset(&event, 0, sizeof(event));
 648                 event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]);
 649                 event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]);
 650                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
 651         }
 652
 653         return NL_SKIP;
 654 }
 655
 656
 657 static struct nl80211_wiphy_data *
 658 nl80211_get_wiphy_data_ap(struct i802_bss *bss)
 659 {
 660         static DEFINE_DL_LIST(nl80211_wiphys);
 661         struct nl80211_wiphy_data *w;
 662         int wiphy_idx, found = 0;
 663         struct i802_bss *tmp_bss;
 664
 665         if (bss->wiphy_data != NULL)
 666                 return bss->wiphy_data;
 667
 668         wiphy_idx = nl80211_get_wiphy_index(bss);
 669
 670         dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) {
 671                 if (w->wiphy_idx == wiphy_idx)
 672                         goto add;
 673         }
 674
 675         /* alloc new one */
 676         w = os_zalloc(sizeof(*w));
 677         if (w == NULL)
 678                 return NULL;
 679         w->wiphy_idx = wiphy_idx;
 680         dl_list_init(&w->bsss);
 681         dl_list_init(&w->drvs);
 682
 683         w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
 684         if (!w->nl_cb) {
 685                 os_free(w);
 686                 return NULL;
 687         }
 688         nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
 689         nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_beacon_event,
 690                   w);
 691
 692         w->nl_beacons = nl_create_handle(bss->drv->global->nl_cb,
 693                                          "wiphy beacons");
 694         if (w->nl_beacons == NULL) {
 695                 os_free(w);
 696                 return NULL;
 697         }
 698
 699         if (nl80211_register_beacons(bss->drv, w)) {
 700                 nl_destroy_handles(&w->nl_beacons);
 701                 os_free(w);
 702                 return NULL;
 703         }
 704
 705         eloop_register_read_sock(nl_socket_get_fd(w->nl_beacons),
 706                                  nl80211_recv_beacons, w, w->nl_beacons);
 707
 708         dl_list_add(&nl80211_wiphys, &w->list);
 709
 710 add:
 711         /* drv entry for this bss already there? */
 712         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 713                 if (tmp_bss->drv == bss->drv) {
 714                         found = 1;
 715                         break;
 716                 }
 717         }
 718         /* if not add it */
 719         if (!found)
 720                 dl_list_add(&w->drvs, &bss->drv->wiphy_list);
 721
 722         dl_list_add(&w->bsss, &bss->wiphy_list);
 723         bss->wiphy_data = w;
 724         return w;
 725 }
 726
 727
 728 static void nl80211_put_wiphy_data_ap(struct i802_bss *bss)
 729 {
 730         struct nl80211_wiphy_data *w = bss->wiphy_data;
 731         struct i802_bss *tmp_bss;
 732         int found = 0;
 733
 734         if (w == NULL)
 735                 return;
 736         bss->wiphy_data = NULL;
 737         dl_list_del(&bss->wiphy_list);
 738
 739         /* still any for this drv present? */
 740         dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) {
 741                 if (tmp_bss->drv == bss->drv) {
 742                         found = 1;
 743                         break;
 744                 }
 745         }
 746         /* if not remove it */
 747         if (!found)
 748                 dl_list_del(&bss->drv->wiphy_list);
 749
 750         if (!dl_list_empty(&w->bsss))
 751                 return;
 752
 753         eloop_unregister_read_sock(nl_socket_get_fd(w->nl_beacons));
 754
 755         nl_cb_put(w->nl_cb);
 756         nl_destroy_handles(&w->nl_beacons);
 757         dl_list_del(&w->list);
 758         os_free(w);
 759 }
 760
 761
 762 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
 763 {
 764         struct i802_bss *bss = priv;
 765         struct wpa_driver_nl80211_data *drv = bss->drv;
 766         if (!drv->associated)
 767                 return -1;
 768         os_memcpy(bssid, drv->bssid, ETH_ALEN);
 769         return 0;
 770 }
 771
 772
 773 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
 774 {
 775         struct i802_bss *bss = priv;
 776         struct wpa_driver_nl80211_data *drv = bss->drv;
 777         if (!drv->associated)
 778                 return -1;
 779         os_memcpy(ssid, drv->ssid, drv->ssid_len);
 780         return drv->ssid_len;
 781 }
 782
 783
 784 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
 785                                           char *buf, size_t len, int del)
 786 {
 787         union wpa_event_data event;
 788
 789         os_memset(&event, 0, sizeof(event));
 790         if (len > sizeof(event.interface_status.ifname))
 791                 len = sizeof(event.interface_status.ifname) - 1;
 792         os_memcpy(event.interface_status.ifname, buf, len);
 793         event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
 794                 EVENT_INTERFACE_ADDED;
 795
 796         wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
 797                    del ? "DEL" : "NEW",
 798                    event.interface_status.ifname,
 799                    del ? "removed" : "added");
 800
 801         if (os_strcmp(drv->first_bss.ifname, event.interface_status.ifname) == 0) {
 802                 if (del) {
 803                         if (drv->if_removed) {
 804                                 wpa_printf(MSG_DEBUG, "nl80211: if_removed "
 805                                            "already set - ignore event");
 806                                 return;
 807                         }
 808                         drv->if_removed = 1;
 809                 } else {
 810                         if (if_nametoindex(drv->first_bss.ifname) == 0) {
 811                                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s "
 812                                            "does not exist - ignore "
 813                                            "RTM_NEWLINK",
 814                                            drv->first_bss.ifname);
 815                                 return;
 816                         }
 817                         if (!drv->if_removed) {
 818                                 wpa_printf(MSG_DEBUG, "nl80211: if_removed "
 819                                            "already cleared - ignore event");
 820                                 return;
 821                         }
 822                         drv->if_removed = 0;
 823                 }
 824         }
 825
 826         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 827 }
 828
 829
 830 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
 831                                          u8 *buf, size_t len)
 832 {
 833         int attrlen, rta_len;
 834         struct rtattr *attr;
 835
 836         attrlen = len;
 837         attr = (struct rtattr *) buf;
 838
 839         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 840         while (RTA_OK(attr, attrlen)) {
 841                 if (attr->rta_type == IFLA_IFNAME) {
 842                         if (os_strcmp(((char *) attr) + rta_len, drv->first_bss.ifname)
 843                             == 0)
 844                                 return 1;
 845                         else
 846                                 break;
 847                 }
 848                 attr = RTA_NEXT(attr, attrlen);
 849         }
 850
 851         return 0;
 852 }
 853
 854
 855 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
 856                                           int ifindex, u8 *buf, size_t len)
 857 {
 858         if (drv->ifindex == ifindex)
 859                 return 1;
 860
 861         if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
 862                 drv->first_bss.ifindex = if_nametoindex(drv->first_bss.ifname);
 863                 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
 864                            "interface");
 865                 wpa_driver_nl80211_finish_drv_init(drv);
 866                 return 1;
 867         }
 868
 869         return 0;
 870 }
 871
 872
 873 static struct wpa_driver_nl80211_data *
 874 nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len)
 875 {
 876         struct wpa_driver_nl80211_data *drv;
 877         dl_list_for_each(drv, &global->interfaces,
 878                          struct wpa_driver_nl80211_data, list) {
 879                 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) ||
 880                     have_ifidx(drv, idx))
 881                         return drv;
 882         }
 883         return NULL;
 884 }
 885
 886
 887 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
 888                                                  struct ifinfomsg *ifi,
 889                                                  u8 *buf, size_t len)
 890 {
 891         struct nl80211_global *global = ctx;
 892         struct wpa_driver_nl80211_data *drv;
 893         int attrlen, rta_len;
 894         struct rtattr *attr;
 895         u32 brid = 0;
 896         char namebuf[IFNAMSIZ];
 897
 898         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
 899         if (!drv) {
 900                 wpa_printf(MSG_DEBUG, "nl80211: Ignore event for foreign "
 901                            "ifindex %d", ifi->ifi_index);
 902                 return;
 903         }
 904
 905         wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
 906                    "(%s%s%s%s)",
 907                    drv->operstate, ifi->ifi_flags,
 908                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
 909                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
 910                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
 911                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
 912
 913         if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) {
 914                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 915                     linux_iface_up(drv->global->ioctl_sock,
 916                                    drv->first_bss.ifname) > 0) {
 917                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 918                                    "event since interface %s is up", namebuf);
 919                         return;
 920                 }
 921                 wpa_printf(MSG_DEBUG, "nl80211: Interface down");
 922                 if (drv->ignore_if_down_event) {
 923                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down "
 924                                    "event generated by mode change");
 925                         drv->ignore_if_down_event = 0;
 926                 } else {
 927                         drv->if_disabled = 1;
 928                         wpa_supplicant_event(drv->ctx,
 929                                              EVENT_INTERFACE_DISABLED, NULL);
 930                 }
 931         }
 932
 933         if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) {
 934                 if (if_indextoname(ifi->ifi_index, namebuf) &&
 935                     linux_iface_up(drv->global->ioctl_sock,
 936                                    drv->first_bss.ifname) == 0) {
 937                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 938                                    "event since interface %s is down",
 939                                    namebuf);
 940                 } else if (if_nametoindex(drv->first_bss.ifname) == 0) {
 941                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 942                                    "event since interface %s does not exist",
 943                                    drv->first_bss.ifname);
 944                 } else if (drv->if_removed) {
 945                         wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up "
 946                                    "event since interface %s is marked "
 947                                    "removed", drv->first_bss.ifname);
 948                 } else {
 949                         wpa_printf(MSG_DEBUG, "nl80211: Interface up");
 950                         drv->if_disabled = 0;
 951                         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED,
 952                                              NULL);
 953                 }
 954         }
 955
 956         /*
 957          * Some drivers send the association event before the operup event--in
 958          * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
 959          * fails. This will hit us when wpa_supplicant does not need to do
 960          * IEEE 802.1X authentication
 961          */
 962         if (drv->operstate == 1 &&
 963             (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
 964             !(ifi->ifi_flags & IFF_RUNNING))
 965                 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
 966                                        -1, IF_OPER_UP);
 967
 968         attrlen = len;
 969         attr = (struct rtattr *) buf;
 970         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 971         while (RTA_OK(attr, attrlen)) {
 972                 if (attr->rta_type == IFLA_IFNAME) {
 973                         wpa_driver_nl80211_event_link(
 974                                 drv,
 975                                 ((char *) attr) + rta_len,
 976                                 attr->rta_len - rta_len, 0);
 977                 } else if (attr->rta_type == IFLA_MASTER)
 978                         brid = nla_get_u32((struct nlattr *) attr);
 979                 attr = RTA_NEXT(attr, attrlen);
 980         }
 981
 982         if (ifi->ifi_family == AF_BRIDGE && brid) {
 983                 /* device has been added to bridge */
 984                 if_indextoname(brid, namebuf);
 985                 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s",
 986                            brid, namebuf);
 987                 add_ifidx(drv, brid);
 988         }
 989 }
 990
 991
 992 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
 993                                                  struct ifinfomsg *ifi,
 994                                                  u8 *buf, size_t len)
 995 {
 996         struct nl80211_global *global = ctx;
 997         struct wpa_driver_nl80211_data *drv;
 998         int attrlen, rta_len;
 999         struct rtattr *attr;
1000         u32 brid = 0;
1001
1002         drv = nl80211_find_drv(global, ifi->ifi_index, buf, len);
1003         if (!drv) {
1004                 wpa_printf(MSG_DEBUG, "nl80211: Ignore dellink event for "
1005                            "foreign ifindex %d", ifi->ifi_index);
1006                 return;
1007         }
1008
1009         attrlen = len;
1010         attr = (struct rtattr *) buf;
1011
1012         rta_len = RTA_ALIGN(sizeof(struct rtattr));
1013         while (RTA_OK(attr, attrlen)) {
1014                 if (attr->rta_type == IFLA_IFNAME) {
1015                         wpa_driver_nl80211_event_link(
1016                                 drv,
1017                                 ((char *) attr) + rta_len,
1018                                 attr->rta_len - rta_len, 1);
1019                 } else if (attr->rta_type == IFLA_MASTER)
1020                         brid = nla_get_u32((struct nlattr *) attr);
1021                 attr = RTA_NEXT(attr, attrlen);
1022         }
1023
1024         if (ifi->ifi_family == AF_BRIDGE && brid) {
1025                 /* device has been removed from bridge */
1026                 char namebuf[IFNAMSIZ];
1027                 if_indextoname(brid, namebuf);
1028                 wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge "
1029                            "%s", brid, namebuf);
1030                 del_ifidx(drv, brid);
1031         }
1032 }
1033
1034
1035 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
1036                             const u8 *frame, size_t len)
1037 {
1038         const struct ieee80211_mgmt *mgmt;
1039         union wpa_event_data event;
1040
1041         mgmt = (const struct ieee80211_mgmt *) frame;
1042         if (len < 24 + sizeof(mgmt->u.auth)) {
1043                 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
1044                            "frame");
1045                 return;
1046         }
1047
1048         os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN);
1049         os_memset(&event, 0, sizeof(event));
1050         os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
1051         event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
1052         event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
1053         if (len > 24 + sizeof(mgmt->u.auth)) {
1054                 event.auth.ies = mgmt->u.auth.variable;
1055                 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
1056         }
1057
1058         wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
1059 }
1060
1061
1062 static unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv)
1063 {
1064         struct nl_msg *msg;
1065         int ret;
1066         struct nl80211_bss_info_arg arg;
1067
1068         os_memset(&arg, 0, sizeof(arg));
1069         msg = nlmsg_alloc();
1070         if (!msg)
1071                 goto nla_put_failure;
1072
1073         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
1074         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1075
1076         arg.drv = drv;
1077         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
1078         msg = NULL;
1079         if (ret == 0) {
1080                 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the "
1081                            "associated BSS from scan results: %u MHz",
1082                            arg.assoc_freq);
1083                 return arg.assoc_freq ? arg.assoc_freq : drv->assoc_freq;
1084         }
1085         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1086                    "(%s)", ret, strerror(-ret));
1087 nla_put_failure:
1088         nlmsg_free(msg);
1089         return drv->assoc_freq;
1090 }
1091
1092
1093 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
1094                             const u8 *frame, size_t len)
1095 {
1096         const struct ieee80211_mgmt *mgmt;
1097         union wpa_event_data event;
1098         u16 status;
1099
1100         mgmt = (const struct ieee80211_mgmt *) frame;
1101         if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
1102                 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
1103                            "frame");
1104                 return;
1105         }
1106
1107         status = le_to_host16(mgmt->u.assoc_resp.status_code);
1108         if (status != WLAN_STATUS_SUCCESS) {
1109                 os_memset(&event, 0, sizeof(event));
1110                 event.assoc_reject.bssid = mgmt->bssid;
1111                 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
1112                         event.assoc_reject.resp_ies =
1113                                 (u8 *) mgmt->u.assoc_resp.variable;
1114                         event.assoc_reject.resp_ies_len =
1115                                 len - 24 - sizeof(mgmt->u.assoc_resp);
1116                 }
1117                 event.assoc_reject.status_code = status;
1118
1119                 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
1120                 return;
1121         }
1122
1123         drv->associated = 1;
1124         os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
1125
1126         os_memset(&event, 0, sizeof(event));
1127         if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
1128                 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
1129                 event.assoc_info.resp_ies_len =
1130                         len - 24 - sizeof(mgmt->u.assoc_resp);
1131         }
1132
1133         event.assoc_info.freq = drv->assoc_freq;
1134
1135         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
1136 }
1137
1138
1139 static void mlme_event_connect(struct wpa_driver_nl80211_data *drv,
1140                                enum nl80211_commands cmd, struct nlattr *status,
1141                                struct nlattr *addr, struct nlattr *req_ie,
1142                                struct nlattr *resp_ie)
1143 {
1144         union wpa_event_data event;
1145
1146         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1147                 /*
1148                  * Avoid reporting two association events that would confuse
1149                  * the core code.
1150                  */
1151                 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) "
1152                            "when using userspace SME", cmd);
1153                 return;
1154         }
1155
1156         os_memset(&event, 0, sizeof(event));
1157         if (cmd == NL80211_CMD_CONNECT &&
1158             nla_get_u16(status) != WLAN_STATUS_SUCCESS) {
1159                 if (addr)
1160                         event.assoc_reject.bssid = nla_data(addr);
1161                 if (resp_ie) {
1162                         event.assoc_reject.resp_ies = nla_data(resp_ie);
1163                         event.assoc_reject.resp_ies_len = nla_len(resp_ie);
1164                 }
1165                 event.assoc_reject.status_code = nla_get_u16(status);
1166                 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
1167                 return;
1168         }
1169
1170         drv->associated = 1;
1171         if (addr)
1172                 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN);
1173
1174         if (req_ie) {
1175                 event.assoc_info.req_ies = nla_data(req_ie);
1176                 event.assoc_info.req_ies_len = nla_len(req_ie);
1177         }
1178         if (resp_ie) {
1179                 event.assoc_info.resp_ies = nla_data(resp_ie);
1180                 event.assoc_info.resp_ies_len = nla_len(resp_ie);
1181         }
1182
1183         event.assoc_info.freq = nl80211_get_assoc_freq(drv);
1184
1185         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
1186 }
1187
1188
1189 static void mlme_event_disconnect(struct wpa_driver_nl80211_data *drv,
1190                                   struct nlattr *reason, struct nlattr *addr,
1191                                   struct nlattr *by_ap)
1192 {
1193         union wpa_event_data data;
1194
1195         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1196                 /*
1197                  * Avoid reporting two disassociation events that could
1198                  * confuse the core code.
1199                  */
1200                 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
1201                            "event when using userspace SME");
1202                 return;
1203         }
1204
1205         drv->associated = 0;
1206         os_memset(&data, 0, sizeof(data));
1207         if (reason)
1208                 data.deauth_info.reason_code = nla_get_u16(reason);
1209         data.deauth_info.locally_generated = by_ap == NULL;
1210         wpa_supplicant_event(drv->ctx, EVENT_DEAUTH, &data);
1211 }
1212
1213
1214 static void mlme_event_ch_switch(struct wpa_driver_nl80211_data *drv,
1215                                  struct nlattr *freq, struct nlattr *type)
1216 {
1217         union wpa_event_data data;
1218         int ht_enabled = 1;
1219         int chan_offset = 0;
1220
1221         wpa_printf(MSG_DEBUG, "nl80211: Channel switch event");
1222
1223         if (!freq || !type)
1224                 return;
1225
1226         switch (nla_get_u32(type)) {
1227         case NL80211_CHAN_NO_HT:
1228                 ht_enabled = 0;
1229                 break;
1230         case NL80211_CHAN_HT20:
1231                 break;
1232         case NL80211_CHAN_HT40PLUS:
1233                 chan_offset = 1;
1234                 break;
1235         case NL80211_CHAN_HT40MINUS:
1236                 chan_offset = -1;
1237                 break;
1238         }
1239
1240         data.ch_switch.freq = nla_get_u32(freq);
1241         data.ch_switch.ht_enabled = ht_enabled;
1242         data.ch_switch.ch_offset = chan_offset;
1243
1244         wpa_supplicant_event(drv->ctx, EVENT_CH_SWITCH, &data);
1245 }
1246
1247
1248 static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
1249                                enum nl80211_commands cmd, struct nlattr *addr)
1250 {
1251         union wpa_event_data event;
1252         enum wpa_event_type ev;
1253
1254         if (nla_len(addr) != ETH_ALEN)
1255                 return;
1256
1257         wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
1258                    cmd, MAC2STR((u8 *) nla_data(addr)));
1259
1260         if (cmd == NL80211_CMD_AUTHENTICATE)
1261                 ev = EVENT_AUTH_TIMED_OUT;
1262         else if (cmd == NL80211_CMD_ASSOCIATE)
1263                 ev = EVENT_ASSOC_TIMED_OUT;
1264         else
1265                 return;
1266
1267         os_memset(&event, 0, sizeof(event));
1268         os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
1269         wpa_supplicant_event(drv->ctx, ev, &event);
1270 }
1271
1272
1273 static void mlme_event_mgmt(struct wpa_driver_nl80211_data *drv,
1274                             struct nlattr *freq, struct nlattr *sig,
1275                             const u8 *frame, size_t len)
1276 {
1277         const struct ieee80211_mgmt *mgmt;
1278         union wpa_event_data event;
1279         u16 fc, stype;
1280         int ssi_signal = 0;
1281
1282         mgmt = (const struct ieee80211_mgmt *) frame;
1283         if (len < 24) {
1284                 wpa_printf(MSG_DEBUG, "nl80211: Too short action frame");
1285                 return;
1286         }
1287
1288         fc = le_to_host16(mgmt->frame_control);
1289         stype = WLAN_FC_GET_STYPE(fc);
1290
1291         if (sig)
1292                 ssi_signal = (s32) nla_get_u32(sig);
1293
1294         os_memset(&event, 0, sizeof(event));
1295         if (freq) {
1296                 event.rx_action.freq = nla_get_u32(freq);
1297                 drv->last_mgmt_freq = event.rx_action.freq;
1298         }
1299         if (stype == WLAN_FC_STYPE_ACTION) {
1300                 event.rx_action.da = mgmt->da;
1301                 event.rx_action.sa = mgmt->sa;
1302                 event.rx_action.bssid = mgmt->bssid;
1303                 event.rx_action.category = mgmt->u.action.category;
1304                 event.rx_action.data = &mgmt->u.action.category + 1;
1305                 event.rx_action.len = frame + len - event.rx_action.data;
1306                 wpa_supplicant_event(drv->ctx, EVENT_RX_ACTION, &event);
1307         } else {
1308                 event.rx_mgmt.frame = frame;
1309                 event.rx_mgmt.frame_len = len;
1310                 event.rx_mgmt.ssi_signal = ssi_signal;
1311                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
1312         }
1313 }
1314
1315
1316 static void mlme_event_mgmt_tx_status(struct wpa_driver_nl80211_data *drv,
1317                                       struct nlattr *cookie, const u8 *frame,
1318                                       size_t len, struct nlattr *ack)
1319 {
1320         union wpa_event_data event;
1321         const struct ieee80211_hdr *hdr;
1322         u16 fc;
1323
1324         if (!is_ap_interface(drv->nlmode)) {
1325                 u64 cookie_val;
1326
1327                 if (!cookie)
1328                         return;
1329
1330                 cookie_val = nla_get_u64(cookie);
1331                 wpa_printf(MSG_DEBUG, "nl80211: Action TX status:"
1332                            " cookie=0%llx%s (ack=%d)",
1333                            (long long unsigned int) cookie_val,
1334                            cookie_val == drv->send_action_cookie ?
1335                            " (match)" : " (unknown)", ack != NULL);
1336                 if (cookie_val != drv->send_action_cookie)
1337                         return;
1338         }
1339
1340         hdr = (const struct ieee80211_hdr *) frame;
1341         fc = le_to_host16(hdr->frame_control);
1342
1343         os_memset(&event, 0, sizeof(event));
1344         event.tx_status.type = WLAN_FC_GET_TYPE(fc);
1345         event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
1346         event.tx_status.dst = hdr->addr1;
1347         event.tx_status.data = frame;
1348         event.tx_status.data_len = len;
1349         event.tx_status.ack = ack != NULL;
1350         wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event);
1351 }
1352
1353
1354 static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv,
1355                                        enum wpa_event_type type,
1356                                        const u8 *frame, size_t len)
1357 {
1358         const struct ieee80211_mgmt *mgmt;
1359         union wpa_event_data event;
1360         const u8 *bssid = NULL;
1361         u16 reason_code = 0;
1362
1363         mgmt = (const struct ieee80211_mgmt *) frame;
1364         if (len >= 24) {
1365                 bssid = mgmt->bssid;
1366
1367                 if (drv->associated != 0 &&
1368                     os_memcmp(bssid, drv->bssid, ETH_ALEN) != 0 &&
1369                     os_memcmp(bssid, drv->auth_bssid, ETH_ALEN) != 0) {
1370                         /*
1371                          * We have presumably received this deauth as a
1372                          * response to a clear_state_mismatch() outgoing
1373                          * deauth.  Don't let it take us offline!
1374                          */
1375                         wpa_printf(MSG_DEBUG, "nl80211: Deauth received "
1376                                    "from Unknown BSSID " MACSTR " -- ignoring",
1377                                    MAC2STR(bssid));
1378                         return;
1379                 }
1380         }
1381
1382         drv->associated = 0;
1383         os_memset(&event, 0, sizeof(event));
1384
1385         /* Note: Same offset for Reason Code in both frame subtypes */
1386         if (len >= 24 + sizeof(mgmt->u.deauth))
1387                 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
1388
1389         if (type == EVENT_DISASSOC) {
1390                 event.disassoc_info.locally_generated =
1391                         !os_memcmp(mgmt->sa, drv->first_bss.addr, ETH_ALEN);
1392                 event.disassoc_info.addr = bssid;
1393                 event.disassoc_info.reason_code = reason_code;
1394                 if (frame + len > mgmt->u.disassoc.variable) {
1395                         event.disassoc_info.ie = mgmt->u.disassoc.variable;
1396                         event.disassoc_info.ie_len = frame + len -
1397                                 mgmt->u.disassoc.variable;
1398                 }
1399         } else {
1400                 event.deauth_info.locally_generated =
1401                         !os_memcmp(mgmt->sa, drv->first_bss.addr, ETH_ALEN);
1402                 event.deauth_info.addr = bssid;
1403                 event.deauth_info.reason_code = reason_code;
1404                 if (frame + len > mgmt->u.deauth.variable) {
1405                         event.deauth_info.ie = mgmt->u.deauth.variable;
1406                         event.deauth_info.ie_len = frame + len -
1407                                 mgmt->u.deauth.variable;
1408                 }
1409         }
1410
1411         wpa_supplicant_event(drv->ctx, type, &event);
1412 }
1413
1414
1415 static void mlme_event_unprot_disconnect(struct wpa_driver_nl80211_data *drv,
1416                                          enum wpa_event_type type,
1417                                          const u8 *frame, size_t len)
1418 {
1419         const struct ieee80211_mgmt *mgmt;
1420         union wpa_event_data event;
1421         u16 reason_code = 0;
1422
1423         if (len < 24)
1424                 return;
1425
1426         mgmt = (const struct ieee80211_mgmt *) frame;
1427
1428         os_memset(&event, 0, sizeof(event));
1429         /* Note: Same offset for Reason Code in both frame subtypes */
1430         if (len >= 24 + sizeof(mgmt->u.deauth))
1431                 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
1432
1433         if (type == EVENT_UNPROT_DISASSOC) {
1434                 event.unprot_disassoc.sa = mgmt->sa;
1435                 event.unprot_disassoc.da = mgmt->da;
1436                 event.unprot_disassoc.reason_code = reason_code;
1437         } else {
1438                 event.unprot_deauth.sa = mgmt->sa;
1439                 event.unprot_deauth.da = mgmt->da;
1440                 event.unprot_deauth.reason_code = reason_code;
1441         }
1442
1443         wpa_supplicant_event(drv->ctx, type, &event);
1444 }
1445
1446
1447 static void mlme_event(struct wpa_driver_nl80211_data *drv,
1448                        enum nl80211_commands cmd, struct nlattr *frame,
1449                        struct nlattr *addr, struct nlattr *timed_out,
1450                        struct nlattr *freq, struct nlattr *ack,
1451                        struct nlattr *cookie, struct nlattr *sig)
1452 {
1453         if (timed_out && addr) {
1454                 mlme_timeout_event(drv, cmd, addr);
1455                 return;
1456         }
1457
1458         if (frame == NULL) {
1459                 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
1460                            "data", cmd);
1461                 return;
1462         }
1463
1464         wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
1465         wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
1466                     nla_data(frame), nla_len(frame));
1467
1468         switch (cmd) {
1469         case NL80211_CMD_AUTHENTICATE:
1470                 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
1471                 break;
1472         case NL80211_CMD_ASSOCIATE:
1473                 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
1474                 break;
1475         case NL80211_CMD_DEAUTHENTICATE:
1476                 mlme_event_deauth_disassoc(drv, EVENT_DEAUTH,
1477                                            nla_data(frame), nla_len(frame));
1478                 break;
1479         case NL80211_CMD_DISASSOCIATE:
1480                 mlme_event_deauth_disassoc(drv, EVENT_DISASSOC,
1481                                            nla_data(frame), nla_len(frame));
1482                 break;
1483         case NL80211_CMD_FRAME:
1484                 mlme_event_mgmt(drv, freq, sig, nla_data(frame),
1485                                 nla_len(frame));
1486                 break;
1487         case NL80211_CMD_FRAME_TX_STATUS:
1488                 mlme_event_mgmt_tx_status(drv, cookie, nla_data(frame),
1489                                           nla_len(frame), ack);
1490                 break;
1491         case NL80211_CMD_UNPROT_DEAUTHENTICATE:
1492                 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DEAUTH,
1493                                              nla_data(frame), nla_len(frame));
1494                 break;
1495         case NL80211_CMD_UNPROT_DISASSOCIATE:
1496                 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DISASSOC,
1497                                              nla_data(frame), nla_len(frame));
1498                 break;
1499         default:
1500                 break;
1501         }
1502 }
1503
1504
1505 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
1506                                            struct nlattr *tb[])
1507 {
1508         union wpa_event_data data;
1509
1510         wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
1511         os_memset(&data, 0, sizeof(data));
1512         if (tb[NL80211_ATTR_MAC]) {
1513                 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
1514                             nla_data(tb[NL80211_ATTR_MAC]),
1515                             nla_len(tb[NL80211_ATTR_MAC]));
1516                 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
1517         }
1518         if (tb[NL80211_ATTR_KEY_SEQ]) {
1519                 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
1520                             nla_data(tb[NL80211_ATTR_KEY_SEQ]),
1521                             nla_len(tb[NL80211_ATTR_KEY_SEQ]));
1522         }
1523         if (tb[NL80211_ATTR_KEY_TYPE]) {
1524                 enum nl80211_key_type key_type =
1525                         nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
1526                 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
1527                 if (key_type == NL80211_KEYTYPE_PAIRWISE)
1528                         data.michael_mic_failure.unicast = 1;
1529         } else
1530                 data.michael_mic_failure.unicast = 1;
1531
1532         if (tb[NL80211_ATTR_KEY_IDX]) {
1533                 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
1534                 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
1535         }
1536
1537         wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
1538 }
1539
1540
1541 static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv,
1542                                  struct nlattr *tb[])
1543 {
1544         if (tb[NL80211_ATTR_MAC] == NULL) {
1545                 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined "
1546                            "event");
1547                 return;
1548         }
1549         os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
1550         drv->associated = 1;
1551         wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined",
1552                    MAC2STR(drv->bssid));
1553
1554         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL);
1555 }
1556
1557
1558 static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv,
1559                                          int cancel_event, struct nlattr *tb[])
1560 {
1561         unsigned int freq, chan_type, duration;
1562         union wpa_event_data data;
1563         u64 cookie;
1564
1565         if (tb[NL80211_ATTR_WIPHY_FREQ])
1566                 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
1567         else
1568                 freq = 0;
1569
1570         if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
1571                 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1572         else
1573                 chan_type = 0;
1574
1575         if (tb[NL80211_ATTR_DURATION])
1576                 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]);
1577         else
1578                 duration = 0;
1579
1580         if (tb[NL80211_ATTR_COOKIE])
1581                 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
1582         else
1583                 cookie = 0;
1584
1585         wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d "
1586                    "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))",
1587                    cancel_event, freq, chan_type, duration,
1588                    (long long unsigned int) cookie,
1589                    cookie == drv->remain_on_chan_cookie ? "match" : "unknown");
1590
1591         if (cookie != drv->remain_on_chan_cookie)
1592                 return; /* not for us */
1593
1594         if (cancel_event)
1595                 drv->pending_remain_on_chan = 0;
1596
1597         os_memset(&data, 0, sizeof(data));
1598         data.remain_on_channel.freq = freq;
1599         data.remain_on_channel.duration = duration;
1600         wpa_supplicant_event(drv->ctx, cancel_event ?
1601                              EVENT_CANCEL_REMAIN_ON_CHANNEL :
1602                              EVENT_REMAIN_ON_CHANNEL, &data);
1603 }
1604
1605
1606 static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted,
1607                             struct nlattr *tb[])
1608 {
1609         union wpa_event_data event;
1610         struct nlattr *nl;
1611         int rem;
1612         struct scan_info *info;
1613 #define MAX_REPORT_FREQS 50
1614         int freqs[MAX_REPORT_FREQS];
1615         int num_freqs = 0;
1616
1617         if (drv->scan_for_auth) {
1618                 drv->scan_for_auth = 0;
1619                 wpa_printf(MSG_DEBUG, "nl80211: Scan results for missing "
1620                            "cfg80211 BSS entry");
1621                 wpa_driver_nl80211_authenticate_retry(drv);
1622                 return;
1623         }
1624
1625         os_memset(&event, 0, sizeof(event));
1626         info = &event.scan_info;
1627         info->aborted = aborted;
1628
1629         if (tb[NL80211_ATTR_SCAN_SSIDS]) {
1630                 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) {
1631                         struct wpa_driver_scan_ssid *s =
1632                                 &info->ssids[info->num_ssids];
1633                         s->ssid = nla_data(nl);
1634                         s->ssid_len = nla_len(nl);
1635                         info->num_ssids++;
1636                         if (info->num_ssids == WPAS_MAX_SCAN_SSIDS)
1637                                 break;
1638                 }
1639         }
1640         if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) {
1641                 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem)
1642                 {
1643                         freqs[num_freqs] = nla_get_u32(nl);
1644                         num_freqs++;
1645                         if (num_freqs == MAX_REPORT_FREQS - 1)
1646                                 break;
1647                 }
1648                 info->freqs = freqs;
1649                 info->num_freqs = num_freqs;
1650         }
1651         wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event);
1652 }
1653
1654
1655 static int get_link_signal(struct nl_msg *msg, void *arg)
1656 {
1657         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1658         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1659         struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1];
1660         static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = {
1661                 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 },
1662         };
1663         struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1];
1664         static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = {
1665                 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 },
1666                 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 },
1667                 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG },
1668                 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG },
1669         };
1670         struct wpa_signal_info *sig_change = arg;
1671
1672         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1673                   genlmsg_attrlen(gnlh, 0), NULL);
1674         if (!tb[NL80211_ATTR_STA_INFO] ||
1675             nla_parse_nested(sinfo, NL80211_STA_INFO_MAX,
1676                              tb[NL80211_ATTR_STA_INFO], policy))
1677                 return NL_SKIP;
1678         if (!sinfo[NL80211_STA_INFO_SIGNAL])
1679                 return NL_SKIP;
1680
1681         sig_change->current_signal =
1682                 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]);
1683
1684         if (sinfo[NL80211_STA_INFO_TX_BITRATE]) {
1685                 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX,
1686                                      sinfo[NL80211_STA_INFO_TX_BITRATE],
1687                                      rate_policy)) {
1688                         sig_change->current_txrate = 0;
1689                 } else {
1690                         if (rinfo[NL80211_RATE_INFO_BITRATE]) {
1691                                 sig_change->current_txrate =
1692                                         nla_get_u16(rinfo[
1693                                              NL80211_RATE_INFO_BITRATE]) * 100;
1694                         }
1695                 }
1696         }
1697
1698         return NL_SKIP;
1699 }
1700
1701
1702 static int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
1703                                    struct wpa_signal_info *sig)
1704 {
1705         struct nl_msg *msg;
1706
1707         sig->current_signal = -9999;
1708         sig->current_txrate = 0;
1709
1710         msg = nlmsg_alloc();
1711         if (!msg)
1712                 return -ENOMEM;
1713
1714         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION);
1715
1716         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1717         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
1718
1719         return send_and_recv_msgs(drv, msg, get_link_signal, sig);
1720  nla_put_failure:
1721         nlmsg_free(msg);
1722         return -ENOBUFS;
1723 }
1724
1725
1726 static int get_link_noise(struct nl_msg *msg, void *arg)
1727 {
1728         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1729         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1730         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1731         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1732                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1733                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1734         };
1735         struct wpa_signal_info *sig_change = arg;
1736
1737         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1738                   genlmsg_attrlen(gnlh, 0), NULL);
1739
1740         if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1741                 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!");
1742                 return NL_SKIP;
1743         }
1744
1745         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1746                              tb[NL80211_ATTR_SURVEY_INFO],
1747                              survey_policy)) {
1748                 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested "
1749                            "attributes!");
1750                 return NL_SKIP;
1751         }
1752
1753         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1754                 return NL_SKIP;
1755
1756         if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1757             sig_change->frequency)
1758                 return NL_SKIP;
1759
1760         if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1761                 return NL_SKIP;
1762
1763         sig_change->current_noise =
1764                 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1765
1766         return NL_SKIP;
1767 }
1768
1769
1770 static int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
1771                                   struct wpa_signal_info *sig_change)
1772 {
1773         struct nl_msg *msg;
1774
1775         sig_change->current_noise = 9999;
1776         sig_change->frequency = drv->assoc_freq;
1777
1778         msg = nlmsg_alloc();
1779         if (!msg)
1780                 return -ENOMEM;
1781
1782         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1783
1784         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1785
1786         return send_and_recv_msgs(drv, msg, get_link_noise, sig_change);
1787  nla_put_failure:
1788         nlmsg_free(msg);
1789         return -ENOBUFS;
1790 }
1791
1792
1793 static int get_noise_for_scan_results(struct nl_msg *msg, void *arg)
1794 {
1795         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1796         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1797         struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1];
1798         static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = {
1799                 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 },
1800                 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 },
1801         };
1802         struct wpa_scan_results *scan_results = arg;
1803         struct wpa_scan_res *scan_res;
1804         size_t i;
1805
1806         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1807                   genlmsg_attrlen(gnlh, 0), NULL);
1808
1809         if (!tb[NL80211_ATTR_SURVEY_INFO]) {
1810                 wpa_printf(MSG_DEBUG, "nl80211: Survey data missing");
1811                 return NL_SKIP;
1812         }
1813
1814         if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX,
1815                              tb[NL80211_ATTR_SURVEY_INFO],
1816                              survey_policy)) {
1817                 wpa_printf(MSG_DEBUG, "nl80211: Failed to parse nested "
1818                            "attributes");
1819                 return NL_SKIP;
1820         }
1821
1822         if (!sinfo[NL80211_SURVEY_INFO_NOISE])
1823                 return NL_SKIP;
1824
1825         if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY])
1826                 return NL_SKIP;
1827
1828         for (i = 0; i < scan_results->num; ++i) {
1829                 scan_res = scan_results->res[i];
1830                 if (!scan_res)
1831                         continue;
1832                 if ((int) nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) !=
1833                     scan_res->freq)
1834                         continue;
1835                 if (!(scan_res->flags & WPA_SCAN_NOISE_INVALID))
1836                         continue;
1837                 scan_res->noise = (s8)
1838                         nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]);
1839                 scan_res->flags &= ~WPA_SCAN_NOISE_INVALID;
1840         }
1841
1842         return NL_SKIP;
1843 }
1844
1845
1846 static int nl80211_get_noise_for_scan_results(
1847         struct wpa_driver_nl80211_data *drv,
1848         struct wpa_scan_results *scan_res)
1849 {
1850         struct nl_msg *msg;
1851
1852         msg = nlmsg_alloc();
1853         if (!msg)
1854                 return -ENOMEM;
1855
1856         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY);
1857
1858         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1859
1860         return send_and_recv_msgs(drv, msg, get_noise_for_scan_results,
1861                                   scan_res);
1862  nla_put_failure:
1863         nlmsg_free(msg);
1864         return -ENOBUFS;
1865 }
1866
1867
1868 static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv,
1869                               struct nlattr *tb[])
1870 {
1871         static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
1872                 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
1873                 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 },
1874                 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
1875                 [NL80211_ATTR_CQM_PKT_LOSS_EVENT] = { .type = NLA_U32 },
1876         };
1877         struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1];
1878         enum nl80211_cqm_rssi_threshold_event event;
1879         union wpa_event_data ed;
1880         struct wpa_signal_info sig;
1881         int res;
1882
1883         if (tb[NL80211_ATTR_CQM] == NULL ||
1884             nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM],
1885                              cqm_policy)) {
1886                 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event");
1887                 return;
1888         }
1889
1890         os_memset(&ed, 0, sizeof(ed));
1891
1892         if (cqm[NL80211_ATTR_CQM_PKT_LOSS_EVENT]) {
1893                 if (!tb[NL80211_ATTR_MAC])
1894                         return;
1895                 os_memcpy(ed.low_ack.addr, nla_data(tb[NL80211_ATTR_MAC]),
1896                           ETH_ALEN);
1897                 wpa_supplicant_event(drv->ctx, EVENT_STATION_LOW_ACK, &ed);
1898                 return;
1899         }
1900
1901         if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL)
1902                 return;
1903         event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]);
1904
1905         if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) {
1906                 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
1907                            "event: RSSI high");
1908                 ed.signal_change.above_threshold = 1;
1909         } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) {
1910                 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor "
1911                            "event: RSSI low");
1912                 ed.signal_change.above_threshold = 0;
1913         } else
1914                 return;
1915
1916         res = nl80211_get_link_signal(drv, &sig);
1917         if (res == 0) {
1918                 ed.signal_change.current_signal = sig.current_signal;
1919                 ed.signal_change.current_txrate = sig.current_txrate;
1920                 wpa_printf(MSG_DEBUG, "nl80211: Signal: %d dBm  txrate: %d",
1921                            sig.current_signal, sig.current_txrate);
1922         }
1923
1924         res = nl80211_get_link_noise(drv, &sig);
1925         if (res == 0) {
1926                 ed.signal_change.current_noise = sig.current_noise;
1927                 wpa_printf(MSG_DEBUG, "nl80211: Noise: %d dBm",
1928                            sig.current_noise);
1929         }
1930
1931         wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed);
1932 }
1933
1934
1935 static void nl80211_new_station_event(struct wpa_driver_nl80211_data *drv,
1936                                       struct nlattr **tb)
1937 {
1938         u8 *addr;
1939         union wpa_event_data data;
1940
1941         if (tb[NL80211_ATTR_MAC] == NULL)
1942                 return;
1943         addr = nla_data(tb[NL80211_ATTR_MAC]);
1944         wpa_printf(MSG_DEBUG, "nl80211: New station " MACSTR, MAC2STR(addr));
1945
1946         if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) {
1947                 u8 *ies = NULL;
1948                 size_t ies_len = 0;
1949                 if (tb[NL80211_ATTR_IE]) {
1950                         ies = nla_data(tb[NL80211_ATTR_IE]);
1951                         ies_len = nla_len(tb[NL80211_ATTR_IE]);
1952                 }
1953                 wpa_hexdump(MSG_DEBUG, "nl80211: Assoc Req IEs", ies, ies_len);
1954                 drv_event_assoc(drv->ctx, addr, ies, ies_len, 0);
1955                 return;
1956         }
1957
1958         if (drv->nlmode != NL80211_IFTYPE_ADHOC)
1959                 return;
1960
1961         os_memset(&data, 0, sizeof(data));
1962         os_memcpy(data.ibss_rsn_start.peer, addr, ETH_ALEN);
1963         wpa_supplicant_event(drv->ctx, EVENT_IBSS_RSN_START, &data);
1964 }
1965
1966
1967 static void nl80211_del_station_event(struct wpa_driver_nl80211_data *drv,
1968                                       struct nlattr **tb)
1969 {
1970         u8 *addr;
1971         union wpa_event_data data;
1972
1973         if (tb[NL80211_ATTR_MAC] == NULL)
1974                 return;
1975         addr = nla_data(tb[NL80211_ATTR_MAC]);
1976         wpa_printf(MSG_DEBUG, "nl80211: Delete station " MACSTR,
1977                    MAC2STR(addr));
1978
1979         if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) {
1980                 drv_event_disassoc(drv->ctx, addr);
1981                 return;
1982         }
1983
1984         if (drv->nlmode != NL80211_IFTYPE_ADHOC)
1985                 return;
1986
1987         os_memset(&data, 0, sizeof(data));
1988         os_memcpy(data.ibss_peer_lost.peer, addr, ETH_ALEN);
1989         wpa_supplicant_event(drv->ctx, EVENT_IBSS_PEER_LOST, &data);
1990 }
1991
1992
1993 static void nl80211_rekey_offload_event(struct wpa_driver_nl80211_data *drv,
1994                                         struct nlattr **tb)
1995 {
1996         struct nlattr *rekey_info[NUM_NL80211_REKEY_DATA];
1997         static struct nla_policy rekey_policy[NUM_NL80211_REKEY_DATA] = {
1998                 [NL80211_REKEY_DATA_KEK] = {
1999                         .minlen = NL80211_KEK_LEN,
2000                         .maxlen = NL80211_KEK_LEN,
2001                 },
2002                 [NL80211_REKEY_DATA_KCK] = {
2003                         .minlen = NL80211_KCK_LEN,
2004                         .maxlen = NL80211_KCK_LEN,
2005                 },
2006                 [NL80211_REKEY_DATA_REPLAY_CTR] = {
2007                         .minlen = NL80211_REPLAY_CTR_LEN,
2008                         .maxlen = NL80211_REPLAY_CTR_LEN,
2009                 },
2010         };
2011         union wpa_event_data data;
2012
2013         if (!tb[NL80211_ATTR_MAC])
2014                 return;
2015         if (!tb[NL80211_ATTR_REKEY_DATA])
2016                 return;
2017         if (nla_parse_nested(rekey_info, MAX_NL80211_REKEY_DATA,
2018                              tb[NL80211_ATTR_REKEY_DATA], rekey_policy))
2019                 return;
2020         if (!rekey_info[NL80211_REKEY_DATA_REPLAY_CTR])
2021                 return;
2022
2023         os_memset(&data, 0, sizeof(data));
2024         data.driver_gtk_rekey.bssid = nla_data(tb[NL80211_ATTR_MAC]);
2025         wpa_printf(MSG_DEBUG, "nl80211: Rekey offload event for BSSID " MACSTR,
2026                    MAC2STR(data.driver_gtk_rekey.bssid));
2027         data.driver_gtk_rekey.replay_ctr =
2028                 nla_data(rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]);
2029         wpa_hexdump(MSG_DEBUG, "nl80211: Rekey offload - Replay Counter",
2030                     data.driver_gtk_rekey.replay_ctr, NL80211_REPLAY_CTR_LEN);
2031         wpa_supplicant_event(drv->ctx, EVENT_DRIVER_GTK_REKEY, &data);
2032 }
2033
2034
2035 static void nl80211_pmksa_candidate_event(struct wpa_driver_nl80211_data *drv,
2036                                           struct nlattr **tb)
2037 {
2038         struct nlattr *cand[NUM_NL80211_PMKSA_CANDIDATE];
2039         static struct nla_policy cand_policy[NUM_NL80211_PMKSA_CANDIDATE] = {
2040                 [NL80211_PMKSA_CANDIDATE_INDEX] = { .type = NLA_U32 },
2041                 [NL80211_PMKSA_CANDIDATE_BSSID] = {
2042                         .minlen = ETH_ALEN,
2043                         .maxlen = ETH_ALEN,
2044                 },
2045                 [NL80211_PMKSA_CANDIDATE_PREAUTH] = { .type = NLA_FLAG },
2046         };
2047         union wpa_event_data data;
2048
2049         if (!tb[NL80211_ATTR_PMKSA_CANDIDATE])
2050                 return;
2051         if (nla_parse_nested(cand, MAX_NL80211_PMKSA_CANDIDATE,
2052                              tb[NL80211_ATTR_PMKSA_CANDIDATE], cand_policy))
2053                 return;
2054         if (!cand[NL80211_PMKSA_CANDIDATE_INDEX] ||
2055             !cand[NL80211_PMKSA_CANDIDATE_BSSID])
2056                 return;
2057
2058         os_memset(&data, 0, sizeof(data));
2059         os_memcpy(data.pmkid_candidate.bssid,
2060                   nla_data(cand[NL80211_PMKSA_CANDIDATE_BSSID]), ETH_ALEN);
2061         data.pmkid_candidate.index =
2062                 nla_get_u32(cand[NL80211_PMKSA_CANDIDATE_INDEX]);
2063         data.pmkid_candidate.preauth =
2064                 cand[NL80211_PMKSA_CANDIDATE_PREAUTH] != NULL;
2065         wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data);
2066 }
2067
2068
2069 static void nl80211_client_probe_event(struct wpa_driver_nl80211_data *drv,
2070                                        struct nlattr **tb)
2071 {
2072         union wpa_event_data data;
2073
2074         if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_ACK])
2075                 return;
2076
2077         os_memset(&data, 0, sizeof(data));
2078         os_memcpy(data.client_poll.addr,
2079                   nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
2080
2081         wpa_supplicant_event(drv->ctx, EVENT_DRIVER_CLIENT_POLL_OK, &data);
2082 }
2083
2084
2085 static void nl80211_spurious_frame(struct i802_bss *bss, struct nlattr **tb,
2086                                    int wds)
2087 {
2088         struct wpa_driver_nl80211_data *drv = bss->drv;
2089         union wpa_event_data event;
2090
2091         if (!tb[NL80211_ATTR_MAC])
2092                 return;
2093
2094         os_memset(&event, 0, sizeof(event));
2095         event.rx_from_unknown.bssid = bss->addr;
2096         event.rx_from_unknown.addr = nla_data(tb[NL80211_ATTR_MAC]);
2097         event.rx_from_unknown.wds = wds;
2098
2099         wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
2100 }
2101
2102
2103 static void do_process_drv_event(struct wpa_driver_nl80211_data *drv,
2104                                  int cmd, struct nlattr **tb)
2105 {
2106         if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED &&
2107             (cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
2108              cmd == NL80211_CMD_SCAN_ABORTED)) {
2109                 wpa_driver_nl80211_set_mode(&drv->first_bss,
2110                                             drv->ap_scan_as_station);
2111                 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
2112         }
2113
2114         switch (cmd) {
2115         case NL80211_CMD_TRIGGER_SCAN:
2116                 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger");
2117                 break;
2118         case NL80211_CMD_START_SCHED_SCAN:
2119                 wpa_printf(MSG_DEBUG, "nl80211: Sched scan started");
2120                 break;
2121         case NL80211_CMD_SCHED_SCAN_STOPPED:
2122                 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stopped");
2123                 wpa_supplicant_event(drv->ctx, EVENT_SCHED_SCAN_STOPPED, NULL);
2124                 break;
2125         case NL80211_CMD_NEW_SCAN_RESULTS:
2126                 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
2127                 drv->scan_complete_events = 1;
2128                 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
2129                                      drv->ctx);
2130                 send_scan_event(drv, 0, tb);
2131                 break;
2132         case NL80211_CMD_SCHED_SCAN_RESULTS:
2133                 wpa_printf(MSG_DEBUG,
2134                            "nl80211: New sched scan results available");
2135                 send_scan_event(drv, 0, tb);
2136                 break;
2137         case NL80211_CMD_SCAN_ABORTED:
2138                 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
2139                 /*
2140                  * Need to indicate that scan results are available in order
2141                  * not to make wpa_supplicant stop its scanning.
2142                  */
2143                 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
2144                                      drv->ctx);
2145                 send_scan_event(drv, 1, tb);
2146                 break;
2147         case NL80211_CMD_AUTHENTICATE:
2148         case NL80211_CMD_ASSOCIATE:
2149         case NL80211_CMD_DEAUTHENTICATE:
2150         case NL80211_CMD_DISASSOCIATE:
2151         case NL80211_CMD_FRAME_TX_STATUS:
2152         case NL80211_CMD_UNPROT_DEAUTHENTICATE:
2153         case NL80211_CMD_UNPROT_DISASSOCIATE:
2154                 mlme_event(drv, cmd, tb[NL80211_ATTR_FRAME],
2155                            tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
2156                            tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
2157                            tb[NL80211_ATTR_COOKIE],
2158                            tb[NL80211_ATTR_RX_SIGNAL_DBM]);
2159                 break;
2160         case NL80211_CMD_CONNECT:
2161         case NL80211_CMD_ROAM:
2162                 mlme_event_connect(drv, cmd,
2163                                    tb[NL80211_ATTR_STATUS_CODE],
2164                                    tb[NL80211_ATTR_MAC],
2165                                    tb[NL80211_ATTR_REQ_IE],
2166                                    tb[NL80211_ATTR_RESP_IE]);
2167                 break;
2168         case NL80211_CMD_CH_SWITCH_NOTIFY:
2169                 mlme_event_ch_switch(drv, tb[NL80211_ATTR_WIPHY_FREQ],
2170                                      tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2171                 break;
2172         case NL80211_CMD_DISCONNECT:
2173                 mlme_event_disconnect(drv, tb[NL80211_ATTR_REASON_CODE],
2174                                       tb[NL80211_ATTR_MAC],
2175                                       tb[NL80211_ATTR_DISCONNECTED_BY_AP]);
2176                 break;
2177         case NL80211_CMD_MICHAEL_MIC_FAILURE:
2178                 mlme_event_michael_mic_failure(drv, tb);
2179                 break;
2180         case NL80211_CMD_JOIN_IBSS:
2181                 mlme_event_join_ibss(drv, tb);
2182                 break;
2183         case NL80211_CMD_REMAIN_ON_CHANNEL:
2184                 mlme_event_remain_on_channel(drv, 0, tb);
2185                 break;
2186         case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL:
2187                 mlme_event_remain_on_channel(drv, 1, tb);
2188                 break;
2189         case NL80211_CMD_NOTIFY_CQM:
2190                 nl80211_cqm_event(drv, tb);
2191                 break;
2192         case NL80211_CMD_REG_CHANGE:
2193                 wpa_printf(MSG_DEBUG, "nl80211: Regulatory domain change");
2194                 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED,
2195                                      NULL);
2196                 break;
2197         case NL80211_CMD_REG_BEACON_HINT:
2198                 wpa_printf(MSG_DEBUG, "nl80211: Regulatory beacon hint");
2199                 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED,
2200                                      NULL);
2201                 break;
2202         case NL80211_CMD_NEW_STATION:
2203                 nl80211_new_station_event(drv, tb);
2204                 break;
2205         case NL80211_CMD_DEL_STATION:
2206                 nl80211_del_station_event(drv, tb);
2207                 break;
2208         case NL80211_CMD_SET_REKEY_OFFLOAD:
2209                 nl80211_rekey_offload_event(drv, tb);
2210                 break;
2211         case NL80211_CMD_PMKSA_CANDIDATE:
2212                 nl80211_pmksa_candidate_event(drv, tb);
2213                 break;
2214         case NL80211_CMD_PROBE_CLIENT:
2215                 nl80211_client_probe_event(drv, tb);
2216                 break;
2217         default:
2218                 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
2219                            "(cmd=%d)", cmd);
2220                 break;
2221         }
2222 }
2223
2224
2225 static int process_drv_event(struct nl_msg *msg, void *arg)
2226 {
2227         struct wpa_driver_nl80211_data *drv = arg;
2228         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2229         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2230
2231         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2232                   genlmsg_attrlen(gnlh, 0), NULL);
2233
2234         if (tb[NL80211_ATTR_IFINDEX]) {
2235                 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2236                 if (ifindex != drv->ifindex && !have_ifidx(drv, ifindex)) {
2237                         wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
2238                                    " for foreign interface (ifindex %d)",
2239                                    gnlh->cmd, ifindex);
2240                         return NL_SKIP;
2241                 }
2242         }
2243
2244         do_process_drv_event(drv, gnlh->cmd, tb);
2245         return NL_SKIP;
2246 }
2247
2248
2249 static int process_global_event(struct nl_msg *msg, void *arg)
2250 {
2251         struct nl80211_global *global = arg;
2252         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2253         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2254         struct wpa_driver_nl80211_data *drv, *tmp;
2255         int ifidx = -1;
2256
2257         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2258                   genlmsg_attrlen(gnlh, 0), NULL);
2259
2260         if (tb[NL80211_ATTR_IFINDEX])
2261                 ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2262
2263         dl_list_for_each_safe(drv, tmp, &global->interfaces,
2264                               struct wpa_driver_nl80211_data, list) {
2265                 if (ifidx == -1 || ifidx == drv->ifindex ||
2266                     have_ifidx(drv, ifidx))
2267                         do_process_drv_event(drv, gnlh->cmd, tb);
2268         }
2269
2270         return NL_SKIP;
2271 }
2272
2273
2274 static int process_bss_event(struct nl_msg *msg, void *arg)
2275 {
2276         struct i802_bss *bss = arg;
2277         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2278         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2279
2280         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2281                   genlmsg_attrlen(gnlh, 0), NULL);
2282
2283         switch (gnlh->cmd) {
2284         case NL80211_CMD_FRAME:
2285         case NL80211_CMD_FRAME_TX_STATUS:
2286                 mlme_event(bss->drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
2287                            tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT],
2288                            tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK],
2289                            tb[NL80211_ATTR_COOKIE],
2290                            tb[NL80211_ATTR_RX_SIGNAL_DBM]);
2291                 break;
2292         case NL80211_CMD_UNEXPECTED_FRAME:
2293                 nl80211_spurious_frame(bss, tb, 0);
2294                 break;
2295         case NL80211_CMD_UNEXPECTED_4ADDR_FRAME:
2296                 nl80211_spurious_frame(bss, tb, 1);
2297                 break;
2298         default:
2299                 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
2300                            "(cmd=%d)", gnlh->cmd);
2301                 break;
2302         }
2303
2304         return NL_SKIP;
2305 }
2306
2307
2308 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
2309                                              void *handle)
2310 {
2311         struct nl_cb *cb = eloop_ctx;
2312
2313         wpa_printf(MSG_DEBUG, "nl80211: Event message available");
2314
2315         nl_recvmsgs(handle, cb);
2316 }
2317
2318
2319 /**
2320  * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
2321  * @priv: driver_nl80211 private data
2322  * @alpha2_arg: country to which to switch to
2323  * Returns: 0 on success, -1 on failure
2324  *
2325  * This asks nl80211 to set the regulatory domain for given
2326  * country ISO / IEC alpha2.
2327  */
2328 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
2329 {
2330         struct i802_bss *bss = priv;
2331         struct wpa_driver_nl80211_data *drv = bss->drv;
2332         char alpha2[3];
2333         struct nl_msg *msg;
2334
2335         msg = nlmsg_alloc();
2336         if (!msg)
2337                 return -ENOMEM;
2338
2339         alpha2[0] = alpha2_arg[0];
2340         alpha2[1] = alpha2_arg[1];
2341         alpha2[2] = '\0';
2342
2343         nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG);
2344
2345         NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
2346         if (send_and_recv_msgs(drv, msg, NULL, NULL))
2347                 return -EINVAL;
2348         return 0;
2349 nla_put_failure:
2350         nlmsg_free(msg);
2351         return -EINVAL;
2352 }
2353
2354
2355 struct wiphy_info_data {
2356         struct wpa_driver_capa *capa;
2357
2358         unsigned int error:1;
2359         unsigned int device_ap_sme:1;
2360         unsigned int poll_command_supported:1;
2361         unsigned int data_tx_status:1;
2362         unsigned int monitor_supported:1;
2363 };
2364
2365
2366 static unsigned int probe_resp_offload_support(int supp_protocols)
2367 {
2368         unsigned int prot = 0;
2369
2370         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS)
2371                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS;
2372         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2)
2373                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2;
2374         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P)
2375                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P;
2376         if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U)
2377                 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING;
2378
2379         return prot;
2380 }
2381
2382
2383 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
2384 {
2385         struct nlattr *tb[NL80211_ATTR_MAX + 1];
2386         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2387         struct wiphy_info_data *info = arg;
2388         int p2p_go_supported = 0, p2p_client_supported = 0;
2389         int p2p_concurrent = 0;
2390         int auth_supported = 0, connect_supported = 0;
2391         struct wpa_driver_capa *capa = info->capa;
2392         static struct nla_policy
2393         iface_combination_policy[NUM_NL80211_IFACE_COMB] = {
2394                 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED },
2395                 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 },
2396                 [NL80211_IFACE_COMB_STA_AP_BI_MATCH] = { .type = NLA_FLAG },
2397                 [NL80211_IFACE_COMB_NUM_CHANNELS] = { .type = NLA_U32 },
2398         },
2399         iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = {
2400                 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED },
2401                 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 },
2402         };
2403
2404         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2405                   genlmsg_attrlen(gnlh, 0), NULL);
2406
2407         if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
2408                 capa->max_scan_ssids =
2409                         nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
2410
2411         if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS])
2412                 capa->max_sched_scan_ssids =
2413                         nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]);
2414
2415         if (tb[NL80211_ATTR_MAX_MATCH_SETS])
2416                 capa->max_match_sets =
2417                         nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]);
2418
2419         if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
2420                 struct nlattr *nl_mode;
2421                 int i;
2422                 nla_for_each_nested(nl_mode,
2423                                     tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
2424                         switch (nla_type(nl_mode)) {
2425                         case NL80211_IFTYPE_AP:
2426                                 capa->flags |= WPA_DRIVER_FLAGS_AP;
2427                                 break;
2428                         case NL80211_IFTYPE_P2P_GO:
2429                                 p2p_go_supported = 1;
2430                                 break;
2431                         case NL80211_IFTYPE_P2P_CLIENT:
2432                                 p2p_client_supported = 1;
2433                                 break;
2434                         case NL80211_IFTYPE_MONITOR:
2435                                 info->monitor_supported = 1;
2436                                 break;
2437                         }
2438                 }
2439         }
2440
2441         if (tb[NL80211_ATTR_INTERFACE_COMBINATIONS]) {
2442                 struct nlattr *nl_combi;
2443                 int rem_combi;
2444
2445                 nla_for_each_nested(nl_combi,
2446                                     tb[NL80211_ATTR_INTERFACE_COMBINATIONS],
2447                                     rem_combi) {
2448                         struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB];
2449                         struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT];
2450                         struct nlattr *nl_limit, *nl_mode;
2451                         int err, rem_limit, rem_mode;
2452                         int combination_has_p2p = 0, combination_has_mgd = 0;
2453
2454                         err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB,
2455                                                nl_combi,
2456                                                iface_combination_policy);
2457                         if (err || !tb_comb[NL80211_IFACE_COMB_LIMITS] ||
2458                             !tb_comb[NL80211_IFACE_COMB_MAXNUM] ||
2459                             !tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS])
2460                                 goto broken_combination;
2461
2462                         nla_for_each_nested(nl_limit,
2463                                             tb_comb[NL80211_IFACE_COMB_LIMITS],
2464                                             rem_limit) {
2465                                 err = nla_parse_nested(tb_limit,
2466                                                        MAX_NL80211_IFACE_LIMIT,
2467                                                        nl_limit,
2468                                                        iface_limit_policy);
2469                                 if (err ||
2470                                     !tb_limit[NL80211_IFACE_LIMIT_TYPES])
2471                                         goto broken_combination;
2472
2473                                 nla_for_each_nested(
2474                                         nl_mode,
2475                                         tb_limit[NL80211_IFACE_LIMIT_TYPES],
2476                                         rem_mode) {
2477                                         int ift = nla_type(nl_mode);
2478                                         if (ift == NL80211_IFTYPE_P2P_GO ||
2479                                             ift == NL80211_IFTYPE_P2P_CLIENT)
2480                                                 combination_has_p2p = 1;
2481                                         if (ift == NL80211_IFTYPE_STATION)
2482                                                 combination_has_mgd = 1;
2483                                 }
2484                                 if (combination_has_p2p && combination_has_mgd)
2485                                         break;
2486                         }
2487
2488                         if (combination_has_p2p && combination_has_mgd) {
2489                                 p2p_concurrent = 1;
2490                                 break;
2491                         }
2492
2493 broken_combination:
2494                         ;
2495                 }
2496         }
2497
2498         if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
2499                 struct nlattr *nl_cmd;
2500                 int i;
2501
2502                 nla_for_each_nested(nl_cmd,
2503                                     tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
2504                         switch (nla_get_u32(nl_cmd)) {
2505                         case NL80211_CMD_AUTHENTICATE:
2506                                 auth_supported = 1;
2507                                 break;
2508                         case NL80211_CMD_CONNECT:
2509                                 connect_supported = 1;
2510                                 break;
2511                         case NL80211_CMD_START_SCHED_SCAN:
2512                                 capa->sched_scan_supported = 1;
2513                                 break;
2514                         case NL80211_CMD_PROBE_CLIENT:
2515                                 info->poll_command_supported = 1;
2516                                 break;
2517                         }
2518                 }
2519         }
2520
2521         if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) {
2522                 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based "
2523                            "off-channel TX");
2524                 capa->flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX;
2525         }
2526
2527         if (tb[NL80211_ATTR_ROAM_SUPPORT]) {
2528                 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming");
2529                 capa->flags |= WPA_DRIVER_FLAGS_BSS_SELECTION;
2530         }
2531
2532         /* default to 5000 since early versions of mac80211 don't set it */
2533         capa->max_remain_on_chan = 5000;
2534
2535         if (tb[NL80211_ATTR_SUPPORT_AP_UAPSD])
2536                 capa->flags |= WPA_DRIVER_FLAGS_AP_UAPSD;
2537
2538         if (tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION])
2539                 capa->max_remain_on_chan =
2540                         nla_get_u32(tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]);
2541
2542         if (auth_supported)
2543                 capa->flags |= WPA_DRIVER_FLAGS_SME;
2544         else if (!connect_supported) {
2545                 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
2546                            "authentication/association or connect commands");
2547                 info->error = 1;
2548         }
2549
2550         if (p2p_go_supported && p2p_client_supported)
2551                 capa->flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE;
2552         if (p2p_concurrent) {
2553                 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
2554                            "interface (driver advertised support)");
2555                 capa->flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
2556                 capa->flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
2557         }
2558
2559         if (tb[NL80211_ATTR_TDLS_SUPPORT]) {
2560                 wpa_printf(MSG_DEBUG, "nl80211: TDLS supported");
2561                 capa->flags |= WPA_DRIVER_FLAGS_TDLS_SUPPORT;
2562
2563                 if (tb[NL80211_ATTR_TDLS_EXTERNAL_SETUP]) {
2564                         wpa_printf(MSG_DEBUG, "nl80211: TDLS external setup");
2565                         capa->flags |=
2566                                 WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP;
2567                 }
2568         }
2569 #ifndef ANDROID_P2P
2570         if (tb[NL80211_ATTR_DEVICE_AP_SME])
2571 #endif
2572                 info->device_ap_sme = 1;
2573
2574         if (tb[NL80211_ATTR_FEATURE_FLAGS]) {
2575                 u32 flags = nla_get_u32(tb[NL80211_ATTR_FEATURE_FLAGS]);
2576
2577                 if (flags & NL80211_FEATURE_SK_TX_STATUS)
2578                         info->data_tx_status = 1;
2579
2580                 if (flags & NL80211_FEATURE_INACTIVITY_TIMER)
2581                         capa->flags |= WPA_DRIVER_FLAGS_INACTIVITY_TIMER;
2582         }
2583
2584         if (tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]) {
2585                 int protocols =
2586                         nla_get_u32(tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]);
2587                 wpa_printf(MSG_DEBUG, "nl80211: Supports Probe Response "
2588                            "offload in AP mode");
2589                 capa->flags |= WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD;
2590                 capa->probe_resp_offloads =
2591                         probe_resp_offload_support(protocols);
2592         }
2593
2594         return NL_SKIP;
2595 }
2596
2597
2598 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
2599                                        struct wiphy_info_data *info)
2600 {
2601         struct nl_msg *msg;
2602
2603         os_memset(info, 0, sizeof(*info));
2604         info->capa = &drv->capa;
2605
2606         msg = nlmsg_alloc();
2607         if (!msg)
2608                 return -1;
2609
2610         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY);
2611
2612         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->first_bss.ifindex);
2613
2614         if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
2615                 return 0;
2616         msg = NULL;
2617 nla_put_failure:
2618         nlmsg_free(msg);
2619         return -1;
2620 }
2621
2622
2623 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
2624 {
2625         struct wiphy_info_data info;
2626         if (wpa_driver_nl80211_get_info(drv, &info))
2627                 return -1;
2628
2629         if (info.error)
2630                 return -1;
2631
2632         drv->has_capability = 1;
2633         /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
2634         drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
2635                 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
2636                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
2637                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
2638         drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
2639                 WPA_DRIVER_CAPA_ENC_WEP104 |
2640                 WPA_DRIVER_CAPA_ENC_TKIP |
2641                 WPA_DRIVER_CAPA_ENC_CCMP;
2642         drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
2643                 WPA_DRIVER_AUTH_SHARED |
2644                 WPA_DRIVER_AUTH_LEAP;
2645
2646         drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES;
2647         drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
2648         drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
2649 #ifndef ANDROID_P2P
2650         if (!info.device_ap_sme)
2651 #endif
2652                 drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS;
2653
2654         drv->device_ap_sme = info.device_ap_sme;
2655         drv->poll_command_supported = info.poll_command_supported;
2656         drv->data_tx_status = info.data_tx_status;
2657
2658 #ifdef ANDROID_P2P
2659         if(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) {
2660                 /* Driver is new enough to support monitorless mode*/
2661                 wpa_printf(MSG_DEBUG, "nl80211: Driver is new "
2662                           "enough to support monitor-less mode");
2663                 drv->use_monitor = 0;
2664         }
2665 #else
2666         /*
2667          * If poll command is supported mac80211 is new enough to
2668          * have everything we need to not need monitor interfaces.
2669          */
2670         drv->use_monitor = !info.poll_command_supported;
2671 #endif
2672
2673         if (drv->device_ap_sme && drv->use_monitor) {
2674                 /*
2675                  * Non-mac80211 drivers may not support monitor interface.
2676                  * Make sure we do not get stuck with incorrect capability here
2677                  * by explicitly testing this.
2678                  */
2679                 if (!info.monitor_supported) {
2680                         wpa_printf(MSG_DEBUG, "nl80211: Disable use_monitor "
2681                                    "with device_ap_sme since no monitor mode "
2682                                    "support detected");
2683                         drv->use_monitor = 0;
2684                 }
2685         }
2686
2687         /*
2688          * If we aren't going to use monitor interfaces, but the
2689          * driver doesn't support data TX status, we won't get TX
2690          * status for EAPOL frames.
2691          */
2692         if (!drv->use_monitor && !info.data_tx_status)
2693                 drv->capa.flags &= ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
2694
2695         return 0;
2696 }
2697
2698
2699 #ifdef ANDROID
2700 static int android_genl_ctrl_resolve(struct nl_handle *handle,
2701                                      const char *name)
2702 {
2703         /*
2704          * Android ICS has very minimal genl_ctrl_resolve() implementation, so
2705          * need to work around that.
2706          */
2707         struct nl_cache *cache = NULL;
2708         struct genl_family *nl80211 = NULL;
2709         int id = -1;
2710
2711         if (genl_ctrl_alloc_cache(handle, &cache) < 0) {
2712                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
2713                            "netlink cache");
2714                 goto fail;
2715         }
2716
2717         nl80211 = genl_ctrl_search_by_name(cache, name);
2718         if (nl80211 == NULL)
2719                 goto fail;
2720
2721         id = genl_family_get_id(nl80211);
2722
2723 fail:
2724         if (nl80211)
2725                 genl_family_put(nl80211);
2726         if (cache)
2727                 nl_cache_free(cache);
2728
2729         return id;
2730 }
2731 #define genl_ctrl_resolve android_genl_ctrl_resolve
2732 #endif /* ANDROID */
2733
2734
2735 static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global)
2736 {
2737         int ret;
2738
2739         global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
2740         if (global->nl_cb == NULL) {
2741                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
2742                            "callbacks");
2743                 return -1;
2744         }
2745
2746         global->nl = nl_create_handle(global->nl_cb, "nl");
2747         if (global->nl == NULL)
2748                 goto err;
2749
2750         global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211");
2751         if (global->nl80211_id < 0) {
2752                 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
2753                            "found");
2754                 goto err;
2755         }
2756
2757         global->nl_event = nl_create_handle(global->nl_cb, "event");
2758         if (global->nl_event == NULL)
2759                 goto err;
2760
2761         ret = nl_get_multicast_id(global, "nl80211", "scan");
2762         if (ret >= 0)
2763                 ret = nl_socket_add_membership(global->nl_event, ret);
2764         if (ret < 0) {
2765                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
2766                            "membership for scan events: %d (%s)",
2767                            ret, strerror(-ret));
2768                 goto err;
2769         }
2770
2771         ret = nl_get_multicast_id(global, "nl80211", "mlme");
2772         if (ret >= 0)
2773                 ret = nl_socket_add_membership(global->nl_event, ret);
2774         if (ret < 0) {
2775                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
2776                            "membership for mlme events: %d (%s)",
2777                            ret, strerror(-ret));
2778                 goto err;
2779         }
2780
2781         ret = nl_get_multicast_id(global, "nl80211", "regulatory");
2782         if (ret >= 0)
2783                 ret = nl_socket_add_membership(global->nl_event, ret);
2784         if (ret < 0) {
2785                 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
2786                            "membership for regulatory events: %d (%s)",
2787                            ret, strerror(-ret));
2788                 /* Continue without regulatory events */
2789         }
2790
2791         nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
2792                   no_seq_check, NULL);
2793         nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
2794                   process_global_event, global);
2795
2796         eloop_register_read_sock(nl_socket_get_fd(global->nl_event),
2797                                  wpa_driver_nl80211_event_receive,
2798                                  global->nl_cb, global->nl_event);
2799
2800         return 0;
2801
2802 err:
2803         nl_destroy_handles(&global->nl_event);
2804         nl_destroy_handles(&global->nl);
2805         nl_cb_put(global->nl_cb);
2806         global->nl_cb = NULL;
2807         return -1;
2808 }
2809
2810
2811 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv)
2812 {
2813         drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
2814         if (!drv->nl_cb) {
2815                 wpa_printf(MSG_ERROR, "nl80211: Failed to alloc cb struct");
2816                 return -1;
2817         }
2818
2819         nl_cb_set(drv->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
2820                   no_seq_check, NULL);
2821         nl_cb_set(drv->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
2822                   process_drv_event, drv);
2823
2824         return 0;
2825 }
2826
2827
2828 static void wpa_driver_nl80211_rfkill_blocked(void *ctx)
2829 {
2830         wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked");
2831         /*
2832          * This may be for any interface; use ifdown event to disable
2833          * interface.
2834          */
2835 }
2836
2837
2838 static void wpa_driver_nl80211_rfkill_unblocked(void *ctx)
2839 {
2840         struct wpa_driver_nl80211_data *drv = ctx;
2841         wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked");
2842         if (linux_set_iface_flags(drv->global->ioctl_sock,
2843                                   drv->first_bss.ifname, 1)) {
2844                 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP "
2845                            "after rfkill unblock");
2846                 return;
2847         }
2848         /* rtnetlink ifup handler will report interface as enabled */
2849 }
2850
2851
2852 static void nl80211_get_phy_name(struct wpa_driver_nl80211_data *drv)
2853 {
2854         /* Find phy (radio) to which this interface belongs */
2855         char buf[90], *pos;
2856         int f, rv;
2857
2858         drv->phyname[0] = '\0';
2859         snprintf(buf, sizeof(buf) - 1, "/sys/class/net/%s/phy80211/name",
2860                  drv->first_bss.ifname);
2861         f = open(buf, O_RDONLY);
2862         if (f < 0) {
2863                 wpa_printf(MSG_DEBUG, "Could not open file %s: %s",
2864                            buf, strerror(errno));
2865                 return;
2866         }
2867
2868         rv = read(f, drv->phyname, sizeof(drv->phyname) - 1);
2869         close(f);
2870         if (rv < 0) {
2871                 wpa_printf(MSG_DEBUG, "Could not read file %s: %s",
2872                            buf, strerror(errno));
2873                 return;
2874         }
2875
2876         drv->phyname[rv] = '\0';
2877         pos = os_strchr(drv->phyname, '\n');
2878         if (pos)
2879                 *pos = '\0';
2880         wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s",
2881                    drv->first_bss.ifname, drv->phyname);
2882 }
2883
2884
2885 static void wpa_driver_nl80211_handle_eapol_tx_status(int sock,
2886                                                       void *eloop_ctx,
2887                                                       void *handle)
2888 {
2889         struct wpa_driver_nl80211_data *drv = eloop_ctx;
2890         u8 data[2048];
2891         struct msghdr msg;
2892         struct iovec entry;
2893         u8 control[512];
2894         struct cmsghdr *cmsg;
2895         int res, found_ee = 0, found_wifi = 0, acked = 0;
2896         union wpa_event_data event;
2897
2898         memset(&msg, 0, sizeof(msg));
2899         msg.msg_iov = &entry;
2900         msg.msg_iovlen = 1;
2901         entry.iov_base = data;
2902         entry.iov_len = sizeof(data);
2903         msg.msg_control = &control;
2904         msg.msg_controllen = sizeof(control);
2905
2906         res = recvmsg(sock, &msg, MSG_ERRQUEUE);
2907         /* if error or not fitting 802.3 header, return */
2908         if (res < 14)
2909                 return;
2910
2911         for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg))
2912         {
2913                 if (cmsg->cmsg_level == SOL_SOCKET &&
2914                     cmsg->cmsg_type == SCM_WIFI_STATUS) {
2915                         int *ack;
2916
2917                         found_wifi = 1;
2918                         ack = (void *)CMSG_DATA(cmsg);
2919                         acked = *ack;
2920                 }
2921
2922                 if (cmsg->cmsg_level == SOL_PACKET &&
2923                     cmsg->cmsg_type == PACKET_TX_TIMESTAMP) {
2924                         struct sock_extended_err *err =
2925                                 (struct sock_extended_err *)CMSG_DATA(cmsg);
2926
2927                         if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS)
2928                                 found_ee = 1;
2929                 }
2930         }
2931
2932         if (!found_ee || !found_wifi)
2933                 return;
2934
2935         memset(&event, 0, sizeof(event));
2936         event.eapol_tx_status.dst = data;
2937         event.eapol_tx_status.data = data + 14;
2938         event.eapol_tx_status.data_len = res - 14;
2939         event.eapol_tx_status.ack = acked;
2940         wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event);
2941 }
2942
2943
2944 static int nl80211_init_bss(struct i802_bss *bss)
2945 {
2946         bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
2947         if (!bss->nl_cb)
2948                 return -1;
2949
2950         nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM,
2951                   no_seq_check, NULL);
2952         nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM,
2953                   process_bss_event, bss);
2954
2955         return 0;
2956 }
2957
2958
2959 static void nl80211_destroy_bss(struct i802_bss *bss)
2960 {
2961         nl_cb_put(bss->nl_cb);
2962         bss->nl_cb = NULL;
2963 }
2964
2965
2966 /**
2967  * wpa_driver_nl80211_init - Initialize nl80211 driver interface
2968  * @ctx: context to be used when calling wpa_supplicant functions,
2969  * e.g., wpa_supplicant_event()
2970  * @ifname: interface name, e.g., wlan0
2971  * @global_priv: private driver global data from global_init()
2972  * Returns: Pointer to private data, %NULL on failure
2973  */
2974 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname,
2975                                       void *global_priv)
2976 {
2977         struct wpa_driver_nl80211_data *drv;
2978         struct rfkill_config *rcfg;
2979         struct i802_bss *bss;
2980
2981         if (global_priv == NULL)
2982                 return NULL;
2983         drv = os_zalloc(sizeof(*drv));
2984         if (drv == NULL)
2985                 return NULL;
2986         drv->global = global_priv;
2987         drv->ctx = ctx;
2988         bss = &drv->first_bss;
2989         bss->drv = drv;
2990         os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname));
2991         drv->monitor_ifidx = -1;
2992         drv->monitor_sock = -1;
2993         drv->eapol_tx_sock = -1;
2994         drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
2995
2996         if (wpa_driver_nl80211_init_nl(drv)) {
2997                 os_free(drv);
2998                 return NULL;
2999         }
3000
3001         if (nl80211_init_bss(bss))
3002                 goto failed;
3003
3004         nl80211_get_phy_name(drv);
3005
3006         rcfg = os_zalloc(sizeof(*rcfg));
3007         if (rcfg == NULL)
3008                 goto failed;
3009         rcfg->ctx = drv;
3010         os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname));
3011         rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked;
3012         rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked;
3013         drv->rfkill = rfkill_init(rcfg);
3014         if (drv->rfkill == NULL) {
3015                 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available");
3016                 os_free(rcfg);
3017         }
3018
3019         if (wpa_driver_nl80211_finish_drv_init(drv))
3020                 goto failed;
3021
3022         drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0);
3023         if (drv->eapol_tx_sock < 0)
3024                 goto failed;
3025
3026         if (drv->data_tx_status) {
3027                 int enabled = 1;
3028
3029                 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS,
3030                                &enabled, sizeof(enabled)) < 0) {
3031                         wpa_printf(MSG_DEBUG,
3032                                 "nl80211: wifi status sockopt failed\n");
3033                         drv->data_tx_status = 0;
3034                         if (!drv->use_monitor)
3035                                 drv->capa.flags &=
3036                                         ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS;
3037                 } else {
3038                         eloop_register_read_sock(drv->eapol_tx_sock,
3039                                 wpa_driver_nl80211_handle_eapol_tx_status,
3040                                 drv, NULL);
3041                 }
3042         }
3043
3044         if (drv->global) {
3045                 dl_list_add(&drv->global->interfaces, &drv->list);
3046                 drv->in_interface_list = 1;
3047         }
3048
3049         return bss;
3050
3051 failed:
3052         wpa_driver_nl80211_deinit(bss);
3053         return NULL;
3054 }
3055
3056
3057 static int nl80211_register_frame(struct i802_bss *bss,
3058                                   struct nl_handle *nl_handle,
3059                                   u16 type, const u8 *match, size_t match_len)
3060 {
3061         struct wpa_driver_nl80211_data *drv = bss->drv;
3062         struct nl_msg *msg;
3063         int ret = -1;
3064
3065         msg = nlmsg_alloc();
3066         if (!msg)
3067                 return -1;
3068
3069         wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x nl_handle=%p",
3070                    type, nl_handle);
3071         wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
3072                     match, match_len);
3073
3074         nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_ACTION);
3075
3076         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
3077         NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type);
3078         NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match);
3079
3080         ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL);
3081         msg = NULL;
3082         if (ret) {
3083                 wpa_printf(MSG_DEBUG, "nl80211: Register frame command "
3084                            "failed (type=%u): ret=%d (%s)",
3085                            type, ret, strerror(-ret));
3086                 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match",
3087                             match, match_len);
3088                 goto nla_put_failure;
3089         }
3090         ret = 0;
3091 nla_put_failure:
3092         nlmsg_free(msg);
3093         return ret;
3094 }
3095
3096
3097 static int nl80211_alloc_mgmt_handle(struct i802_bss *bss)
3098 {
3099         struct wpa_driver_nl80211_data *drv = bss->drv;
3100
3101         if (bss->nl_mgmt) {
3102                 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting "
3103                            "already on! (nl_mgmt=%p)", bss->nl_mgmt);
3104                 return -1;
3105         }
3106
3107         bss->nl_mgmt = nl_create_handle(drv->nl_cb, "mgmt");
3108         if (bss->nl_mgmt == NULL)
3109                 return -1;
3110
3111         eloop_register_read_sock(nl_socket_get_fd(bss->nl_mgmt),
3112                                  wpa_driver_nl80211_event_receive, bss->nl_cb,
3113                                  bss->nl_mgmt);
3114
3115         return 0;
3116 }
3117
3118
3119 static int nl80211_register_action_frame(struct i802_bss *bss,
3120                                          const u8 *match, size_t match_len)
3121 {
3122         u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4);
3123         return nl80211_register_frame(bss, bss->nl_mgmt,
3124                                       type, match, match_len);
3125 }
3126
3127
3128 static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss)
3129 {
3130         struct wpa_driver_nl80211_data *drv = bss->drv;
3131
3132         if (nl80211_alloc_mgmt_handle(bss))
3133                 return -1;
3134         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP "
3135                    "handle %p", bss->nl_mgmt);
3136
3137 #if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING)
3138         /* GAS Initial Request */
3139         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0)
3140                 return -1;
3141         /* GAS Initial Response */
3142         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0)
3143                 return -1;
3144         /* GAS Comeback Request */
3145         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0)
3146                 return -1;
3147         /* GAS Comeback Response */
3148         if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0)
3149                 return -1;
3150 #endif /* CONFIG_P2P || CONFIG_INTERWORKING */
3151 #ifdef CONFIG_P2P
3152         /* P2P Public Action */
3153         if (nl80211_register_action_frame(bss,
3154                                           (u8 *) "\x04\x09\x50\x6f\x9a\x09",
3155                                           6) < 0)
3156                 return -1;
3157         /* P2P Action */
3158         if (nl80211_register_action_frame(bss,
3159                                           (u8 *) "\x7f\x50\x6f\x9a\x09",
3160                                           5) < 0)
3161                 return -1;
3162 #endif /* CONFIG_P2P */
3163 #ifdef CONFIG_IEEE80211W
3164         /* SA Query Response */
3165         if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0)
3166                 return -1;
3167 #endif /* CONFIG_IEEE80211W */
3168 #ifdef CONFIG_TDLS
3169         if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) {
3170                 /* TDLS Discovery Response */
3171                 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) <
3172                     0)
3173                         return -1;
3174         }
3175 #endif /* CONFIG_TDLS */
3176
3177         /* FT Action frames */
3178         if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0)
3179                 return -1;
3180         else
3181                 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT |
3182                         WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK;
3183
3184         /* WNM - BSS Transition Management Request */
3185         if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0)
3186                 return -1;
3187
3188         return 0;
3189 }
3190
3191
3192 static int nl80211_register_spurious_class3(struct i802_bss *bss)
3193 {
3194         struct wpa_driver_nl80211_data *drv = bss->drv;
3195         struct nl_msg *msg;
3196         int ret = -1;
3197
3198         msg = nlmsg_alloc();
3199         if (!msg)
3200                 return -1;
3201
3202         nl80211_cmd(drv, msg, 0, NL80211_CMD_UNEXPECTED_FRAME);
3203
3204         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
3205
3206         ret = send_and_recv(drv->global, bss->nl_mgmt, msg, NULL, NULL);
3207         msg = NULL;
3208         if (ret) {
3209                 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 "
3210                            "failed: ret=%d (%s)",
3211                            ret, strerror(-ret));
3212                 goto nla_put_failure;
3213         }
3214         ret = 0;
3215 nla_put_failure:
3216         nlmsg_free(msg);
3217         return ret;
3218 }
3219
3220
3221 static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss)
3222 {
3223         static const int stypes[] = {
3224                 WLAN_FC_STYPE_AUTH,
3225                 WLAN_FC_STYPE_ASSOC_REQ,
3226                 WLAN_FC_STYPE_REASSOC_REQ,
3227                 WLAN_FC_STYPE_DISASSOC,
3228                 WLAN_FC_STYPE_DEAUTH,
3229                 WLAN_FC_STYPE_ACTION,
3230                 WLAN_FC_STYPE_PROBE_REQ,
3231 /* Beacon doesn't work as mac80211 doesn't currently allow
3232  * it, but it wouldn't really be the right thing anyway as
3233  * it isn't per interface ... maybe just dump the scan
3234  * results periodically for OLBC?
3235  */
3236 //              WLAN_FC_STYPE_BEACON,
3237         };
3238         unsigned int i;
3239
3240         if (nl80211_alloc_mgmt_handle(bss))
3241                 return -1;
3242         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
3243                    "handle %p", bss->nl_mgmt);
3244
3245         for (i = 0; i < sizeof(stypes) / sizeof(stypes[0]); i++) {
3246                 if (nl80211_register_frame(bss, bss->nl_mgmt,
3247                                            (WLAN_FC_TYPE_MGMT << 2) |
3248                                            (stypes[i] << 4),
3249                                            NULL, 0) < 0) {
3250                         goto out_err;
3251                 }
3252         }
3253
3254         if (nl80211_register_spurious_class3(bss))
3255                 goto out_err;
3256
3257         if (nl80211_get_wiphy_data_ap(bss) == NULL)
3258                 goto out_err;
3259
3260         return 0;
3261
3262 out_err:
3263         eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt));
3264         nl_destroy_handles(&bss->nl_mgmt);
3265         return -1;
3266 }
3267
3268
3269 static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss)
3270 {
3271         if (nl80211_alloc_mgmt_handle(bss))
3272                 return -1;
3273         wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP "
3274                    "handle %p (device SME)", bss->nl_mgmt);
3275
3276         if (nl80211_register_frame(bss, bss->nl_mgmt,
3277                                    (WLAN_FC_TYPE_MGMT << 2) |
3278                                    (WLAN_FC_STYPE_ACTION << 4),
3279                                    NULL, 0) < 0)
3280                 goto out_err;
3281
3282         return 0;
3283
3284 out_err:
3285         eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt));
3286         nl_destroy_handles(&bss->nl_mgmt);
3287         return -1;
3288 }
3289
3290
3291 static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason)
3292 {
3293         if (bss->nl_mgmt == NULL)
3294                 return;
3295         wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p "
3296                    "(%s)", bss->nl_mgmt, reason);
3297         eloop_unregister_read_sock(nl_socket_get_fd(bss->nl_mgmt));
3298         nl_destroy_handles(&bss->nl_mgmt);
3299
3300         nl80211_put_wiphy_data_ap(bss);
3301 }
3302
3303
3304 static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx)
3305 {
3306         wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL);
3307 }
3308
3309
3310 static int
3311 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
3312 {
3313         struct i802_bss *bss = &drv->first_bss;
3314         int send_rfkill_event = 0;
3315
3316         drv->ifindex = if_nametoindex(bss->ifname);
3317         drv->first_bss.ifindex = drv->ifindex;
3318
3319 #ifndef HOSTAPD
3320         /*
3321          * Make sure the interface starts up in station mode unless this is a
3322          * dynamically added interface (e.g., P2P) that was already configured
3323          * with proper iftype.
3324          */
3325         if (drv->ifindex != drv->global->if_add_ifindex &&
3326             wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION) < 0) {
3327                 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver to "
3328                            "use managed mode");
3329                 return -1;
3330         }
3331
3332         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) {
3333                 if (rfkill_is_blocked(drv->rfkill)) {
3334                         wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable "
3335                                    "interface '%s' due to rfkill",
3336                                    bss->ifname);
3337                         drv->if_disabled = 1;
3338                         send_rfkill_event = 1;
3339                 } else {
3340                         wpa_printf(MSG_ERROR, "nl80211: Could not set "
3341                                    "interface '%s' UP", bss->ifname);
3342                         return -1;
3343                 }
3344         }
3345
3346         netlink_send_oper_ifla(drv->global->netlink, drv->ifindex,
3347                                1, IF_OPER_DORMANT);
3348 #endif /* HOSTAPD */
3349
3350         if (wpa_driver_nl80211_capa(drv))
3351                 return -1;
3352
3353         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
3354                                bss->addr))
3355                 return -1;
3356
3357         if (send_rfkill_event) {
3358                 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill,
3359                                        drv, drv->ctx);
3360         }
3361
3362         return 0;
3363 }
3364
3365
3366 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
3367 {
3368         struct nl_msg *msg;
3369
3370         msg = nlmsg_alloc();
3371         if (!msg)
3372                 return -ENOMEM;
3373
3374         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_BEACON);
3375         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3376
3377         return send_and_recv_msgs(drv, msg, NULL, NULL);
3378  nla_put_failure:
3379         nlmsg_free(msg);
3380         return -ENOBUFS;
3381 }
3382
3383
3384 /**
3385  * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
3386  * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
3387  *
3388  * Shut down driver interface and processing of driver events. Free
3389  * private data buffer if one was allocated in wpa_driver_nl80211_init().
3390  */
3391 static void wpa_driver_nl80211_deinit(void *priv)
3392 {
3393         struct i802_bss *bss = priv;
3394         struct wpa_driver_nl80211_data *drv = bss->drv;
3395
3396         bss->in_deinit = 1;
3397         if (drv->data_tx_status)
3398                 eloop_unregister_read_sock(drv->eapol_tx_sock);
3399         if (drv->eapol_tx_sock >= 0)
3400                 close(drv->eapol_tx_sock);
3401
3402         if (bss->nl_preq)
3403                 wpa_driver_nl80211_probe_req_report(bss, 0);
3404         if (bss->added_if_into_bridge) {
3405                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
3406                                     bss->ifname) < 0)
3407                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
3408                                    "interface %s from bridge %s: %s",
3409                                    bss->ifname, bss->brname, strerror(errno));
3410         }
3411         if (bss->added_bridge) {
3412                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
3413                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
3414                                    "bridge %s: %s",
3415                                    bss->brname, strerror(errno));
3416         }
3417
3418         nl80211_remove_monitor_interface(drv);
3419
3420         if (is_ap_interface(drv->nlmode))
3421                 wpa_driver_nl80211_del_beacon(drv);
3422
3423 #ifdef HOSTAPD
3424         if (drv->last_freq_ht) {
3425                 /* Clear HT flags from the driver */
3426                 struct hostapd_freq_params freq;
3427                 os_memset(&freq, 0, sizeof(freq));
3428                 freq.freq = drv->last_freq;
3429                 i802_set_freq(priv, &freq);
3430         }
3431
3432         if (drv->eapol_sock >= 0) {
3433                 eloop_unregister_read_sock(drv->eapol_sock);
3434                 close(drv->eapol_sock);
3435         }
3436
3437         if (drv->if_indices != drv->default_if_indices)
3438                 os_free(drv->if_indices);
3439 #endif /* HOSTAPD */
3440
3441         if (drv->disabled_11b_rates)
3442                 nl80211_disable_11b_rates(drv, drv->ifindex, 0);
3443
3444         netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0,
3445                                IF_OPER_UP);
3446         rfkill_deinit(drv->rfkill);
3447
3448         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
3449
3450         (void) linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0);
3451         wpa_driver_nl80211_set_mode(bss, NL80211_IFTYPE_STATION);
3452         nl80211_mgmt_unsubscribe(bss, "deinit");
3453
3454         nl_cb_put(drv->nl_cb);
3455
3456         nl80211_destroy_bss(&drv->first_bss);
3457
3458         os_free(drv->filter_ssids);
3459
3460         os_free(drv->auth_ie);
3461
3462         if (drv->in_interface_list)
3463                 dl_list_del(&drv->list);
3464
3465         os_free(drv);
3466 }
3467
3468
3469 /**
3470  * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
3471  * @eloop_ctx: Driver private data
3472  * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
3473  *
3474  * This function can be used as registered timeout when starting a scan to
3475  * generate a scan completed event if the driver does not report this.
3476  */
3477 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
3478 {
3479         struct wpa_driver_nl80211_data *drv = eloop_ctx;
3480         if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED) {
3481                 wpa_driver_nl80211_set_mode(&drv->first_bss,
3482                                             drv->ap_scan_as_station);
3483                 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED;
3484         }
3485         wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
3486         wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
3487 }
3488
3489
3490 /**
3491  * wpa_driver_nl80211_scan - Request the driver to initiate scan
3492  * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
3493  * @params: Scan parameters
3494  * Returns: 0 on success, -1 on failure
3495  */
3496 static int wpa_driver_nl80211_scan(void *priv,
3497                                    struct wpa_driver_scan_params *params)
3498 {
3499         struct i802_bss *bss = priv;
3500         struct wpa_driver_nl80211_data *drv = bss->drv;
3501         int ret = 0, timeout;
3502         struct nl_msg *msg, *ssids, *freqs, *rates;
3503         size_t i;
3504
3505         drv->scan_for_auth = 0;
3506
3507         msg = nlmsg_alloc();
3508         ssids = nlmsg_alloc();
3509         freqs = nlmsg_alloc();
3510         rates = nlmsg_alloc();
3511         if (!msg || !ssids || !freqs || !rates) {
3512                 nlmsg_free(msg);
3513                 nlmsg_free(ssids);
3514                 nlmsg_free(freqs);
3515                 nlmsg_free(rates);
3516                 return -1;
3517         }
3518
3519         os_free(drv->filter_ssids);
3520         drv->filter_ssids = params->filter_ssids;
3521         params->filter_ssids = NULL;
3522         drv->num_filter_ssids = params->num_filter_ssids;
3523
3524         nl80211_cmd(drv, msg, 0, NL80211_CMD_TRIGGER_SCAN);
3525
3526         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3527
3528         for (i = 0; i < params->num_ssids; i++) {
3529                 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID",
3530                                   params->ssids[i].ssid,
3531                                   params->ssids[i].ssid_len);
3532                 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
3533                         params->ssids[i].ssid);
3534         }
3535         if (params->num_ssids)
3536                 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
3537
3538         if (params->extra_ies) {
3539                 wpa_hexdump(MSG_MSGDUMP, "nl80211: Scan extra IEs",
3540                             params->extra_ies, params->extra_ies_len);
3541                 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
3542                         params->extra_ies);
3543         }
3544
3545         if (params->freqs) {
3546                 for (i = 0; params->freqs[i]; i++) {
3547                         wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
3548                                    "MHz", params->freqs[i]);
3549                         NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
3550                 }
3551                 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
3552         }
3553
3554         if (params->p2p_probe) {
3555                 wpa_printf(MSG_DEBUG, "nl80211: P2P probe - mask SuppRates");
3556
3557                 /*
3558                  * Remove 2.4 GHz rates 1, 2, 5.5, 11 Mbps from supported rates
3559                  * by masking out everything else apart from the OFDM rates 6,
3560                  * 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS rates. All 5 GHz
3561                  * rates are left enabled.
3562                  */
3563                 NLA_PUT(rates, NL80211_BAND_2GHZ, 8,
3564                         "\x0c\x12\x18\x24\x30\x48\x60\x6c");
3565                 nla_put_nested(msg, NL80211_ATTR_SCAN_SUPP_RATES, rates);
3566
3567                 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE);
3568         }
3569
3570         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3571         msg = NULL;
3572         if (ret) {
3573                 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
3574                            "(%s)", ret, strerror(-ret));
3575 #ifdef HOSTAPD
3576                 if (is_ap_interface(drv->nlmode)) {
3577                         /*
3578                          * mac80211 does not allow scan requests in AP mode, so
3579                          * try to do this in station mode.
3580                          */
3581                         if (wpa_driver_nl80211_set_mode(
3582                                     bss, NL80211_IFTYPE_STATION))
3583                                 goto nla_put_failure;
3584
3585                         if (wpa_driver_nl80211_scan(drv, params)) {
3586                                 wpa_driver_nl80211_set_mode(bss, drv->nlmode);
3587                                 goto nla_put_failure;
3588                         }
3589
3590                         /* Restore AP mode when processing scan results */
3591                         drv->ap_scan_as_station = drv->nlmode;
3592                         ret = 0;
3593                 } else
3594                         goto nla_put_failure;
3595 #else /* HOSTAPD */
3596                 goto nla_put_failure;
3597 #endif /* HOSTAPD */
3598         }
3599
3600         /* Not all drivers generate "scan completed" wireless event, so try to
3601          * read results after a timeout. */
3602         timeout = 10;
3603         if (drv->scan_complete_events) {
3604                 /*
3605                  * The driver seems to deliver events to notify when scan is
3606                  * complete, so use longer timeout to avoid race conditions
3607                  * with scanning and following association request.
3608                  */
3609                 timeout = 30;
3610         }
3611         wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
3612                    "seconds", ret, timeout);
3613         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
3614         eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
3615                                drv, drv->ctx);
3616
3617 nla_put_failure:
3618         nlmsg_free(ssids);
3619         nlmsg_free(msg);
3620         nlmsg_free(freqs);
3621         nlmsg_free(rates);
3622         return ret;
3623 }
3624
3625
3626 /**
3627  * wpa_driver_nl80211_sched_scan - Initiate a scheduled scan
3628  * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
3629  * @params: Scan parameters
3630  * @interval: Interval between scan cycles in milliseconds
3631  * Returns: 0 on success, -1 on failure or if not supported
3632  */
3633 static int wpa_driver_nl80211_sched_scan(void *priv,
3634                                          struct wpa_driver_scan_params *params,
3635                                          u32 interval)
3636 {
3637         struct i802_bss *bss = priv;
3638         struct wpa_driver_nl80211_data *drv = bss->drv;
3639         int ret = 0;
3640         struct nl_msg *msg, *ssids, *freqs, *match_set_ssid, *match_sets;
3641         size_t i;
3642
3643 #ifdef ANDROID
3644         if (!drv->capa.sched_scan_supported)
3645                 return android_pno_start(bss, params);
3646 #endif /* ANDROID */
3647
3648         msg = nlmsg_alloc();
3649         ssids = nlmsg_alloc();
3650         freqs = nlmsg_alloc();
3651         if (!msg || !ssids || !freqs) {
3652                 nlmsg_free(msg);
3653                 nlmsg_free(ssids);
3654                 nlmsg_free(freqs);
3655                 return -1;
3656         }
3657
3658         os_free(drv->filter_ssids);
3659         drv->filter_ssids = params->filter_ssids;
3660         params->filter_ssids = NULL;
3661         drv->num_filter_ssids = params->num_filter_ssids;
3662
3663         nl80211_cmd(drv, msg, 0, NL80211_CMD_START_SCHED_SCAN);
3664
3665         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3666
3667         NLA_PUT_U32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, interval);
3668
3669         if (drv->num_filter_ssids &&
3670             (int) drv->num_filter_ssids <= drv->capa.max_match_sets) {
3671                 match_sets = nlmsg_alloc();
3672
3673                 for (i = 0; i < drv->num_filter_ssids; i++) {
3674                         wpa_hexdump_ascii(MSG_MSGDUMP,
3675                                           "nl80211: Sched scan filter SSID",
3676                                           drv->filter_ssids[i].ssid,
3677                                           drv->filter_ssids[i].ssid_len);
3678
3679                         match_set_ssid = nlmsg_alloc();
3680                         nla_put(match_set_ssid,
3681                                 NL80211_ATTR_SCHED_SCAN_MATCH_SSID,
3682                                 drv->filter_ssids[i].ssid_len,
3683                                 drv->filter_ssids[i].ssid);
3684
3685                         nla_put_nested(match_sets, i + 1, match_set_ssid);
3686
3687                         nlmsg_free(match_set_ssid);
3688                 }
3689
3690                 nla_put_nested(msg, NL80211_ATTR_SCHED_SCAN_MATCH,
3691                                match_sets);
3692                 nlmsg_free(match_sets);
3693         }
3694
3695         for (i = 0; i < params->num_ssids; i++) {
3696                 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Sched scan SSID",
3697                                   params->ssids[i].ssid,
3698                                   params->ssids[i].ssid_len);
3699                 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
3700                         params->ssids[i].ssid);
3701         }
3702         if (params->num_ssids)
3703                 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
3704
3705         if (params->extra_ies) {
3706                 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Sched scan extra IEs",
3707                                   params->extra_ies, params->extra_ies_len);
3708                 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
3709                         params->extra_ies);
3710         }
3711
3712         if (params->freqs) {
3713                 for (i = 0; params->freqs[i]; i++) {
3714                         wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u "
3715                                    "MHz", params->freqs[i]);
3716                         NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
3717                 }
3718                 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
3719         }
3720
3721         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3722
3723         /* TODO: if we get an error here, we should fall back to normal scan */
3724
3725         msg = NULL;
3726         if (ret) {
3727                 wpa_printf(MSG_DEBUG, "nl80211: Sched scan start failed: "
3728                            "ret=%d (%s)", ret, strerror(-ret));
3729                 goto nla_put_failure;
3730         }
3731
3732         wpa_printf(MSG_DEBUG, "nl80211: Sched scan requested (ret=%d) - "
3733                    "scan interval %d msec", ret, interval);
3734
3735 nla_put_failure:
3736         nlmsg_free(ssids);
3737         nlmsg_free(msg);
3738         nlmsg_free(freqs);
3739         return ret;
3740 }
3741
3742
3743 /**
3744  * wpa_driver_nl80211_stop_sched_scan - Stop a scheduled scan
3745  * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
3746  * Returns: 0 on success, -1 on failure or if not supported
3747  */
3748 static int wpa_driver_nl80211_stop_sched_scan(void *priv)
3749 {
3750         struct i802_bss *bss = priv;
3751         struct wpa_driver_nl80211_data *drv = bss->drv;
3752         int ret = 0;
3753         struct nl_msg *msg;
3754
3755 #ifdef ANDROID
3756         if (!drv->capa.sched_scan_supported)
3757                 return android_pno_stop(bss);
3758 #endif /* ANDROID */
3759
3760         msg = nlmsg_alloc();
3761         if (!msg)
3762                 return -1;
3763
3764         nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_SCHED_SCAN);
3765
3766         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3767
3768         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3769         msg = NULL;
3770         if (ret) {
3771                 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop failed: "
3772                            "ret=%d (%s)", ret, strerror(-ret));
3773                 goto nla_put_failure;
3774         }
3775
3776         wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop sent (ret=%d)", ret);
3777
3778 nla_put_failure:
3779         nlmsg_free(msg);
3780         return ret;
3781 }
3782
3783
3784 static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
3785 {
3786         const u8 *end, *pos;
3787
3788         if (ies == NULL)
3789                 return NULL;
3790
3791         pos = ies;
3792         end = ies + ies_len;
3793
3794         while (pos + 1 < end) {
3795                 if (pos + 2 + pos[1] > end)
3796                         break;
3797                 if (pos[0] == ie)
3798                         return pos;
3799                 pos += 2 + pos[1];
3800         }
3801
3802         return NULL;
3803 }
3804
3805
3806 static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
3807                                  const u8 *ie, size_t ie_len)
3808 {
3809         const u8 *ssid;
3810         size_t i;
3811
3812         if (drv->filter_ssids == NULL)
3813                 return 0;
3814
3815         ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
3816         if (ssid == NULL)
3817                 return 1;
3818
3819         for (i = 0; i < drv->num_filter_ssids; i++) {
3820                 if (ssid[1] == drv->filter_ssids[i].ssid_len &&
3821                     os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
3822                     0)
3823                         return 0;
3824         }
3825
3826         return 1;
3827 }
3828
3829
3830 static int bss_info_handler(struct nl_msg *msg, void *arg)
3831 {
3832         struct nlattr *tb[NL80211_ATTR_MAX + 1];
3833         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3834         struct nlattr *bss[NL80211_BSS_MAX + 1];
3835         static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
3836                 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
3837                 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
3838                 [NL80211_BSS_TSF] = { .type = NLA_U64 },
3839                 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
3840                 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
3841                 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
3842                 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
3843                 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
3844                 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
3845                 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
3846                 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC },
3847         };
3848         struct nl80211_bss_info_arg *_arg = arg;
3849         struct wpa_scan_results *res = _arg->res;
3850         struct wpa_scan_res **tmp;
3851         struct wpa_scan_res *r;
3852         const u8 *ie, *beacon_ie;
3853         size_t ie_len, beacon_ie_len;
3854         u8 *pos;
3855         size_t i;
3856
3857         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3858                   genlmsg_attrlen(gnlh, 0), NULL);
3859         if (!tb[NL80211_ATTR_BSS])
3860                 return NL_SKIP;
3861         if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
3862                              bss_policy))
3863                 return NL_SKIP;
3864         if (bss[NL80211_BSS_STATUS]) {
3865                 enum nl80211_bss_status status;
3866                 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
3867                 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
3868                     bss[NL80211_BSS_FREQUENCY]) {
3869                         _arg->assoc_freq =
3870                                 nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
3871                         wpa_printf(MSG_DEBUG, "nl80211: Associated on %u MHz",
3872                                    _arg->assoc_freq);
3873                 }
3874                 if (status == NL80211_BSS_STATUS_ASSOCIATED &&
3875                     bss[NL80211_BSS_BSSID]) {
3876                         os_memcpy(_arg->assoc_bssid,
3877                                   nla_data(bss[NL80211_BSS_BSSID]), ETH_ALEN);
3878                         wpa_printf(MSG_DEBUG, "nl80211: Associated with "
3879                                    MACSTR, MAC2STR(_arg->assoc_bssid));
3880                 }
3881         }
3882         if (!res)
3883                 return NL_SKIP;
3884         if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
3885                 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
3886                 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
3887         } else {
3888                 ie = NULL;
3889                 ie_len = 0;
3890         }
3891         if (bss[NL80211_BSS_BEACON_IES]) {
3892                 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]);
3893                 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]);
3894         } else {
3895                 beacon_ie = NULL;
3896                 beacon_ie_len = 0;
3897         }
3898
3899         if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie,
3900                                   ie ? ie_len : beacon_ie_len))
3901                 return NL_SKIP;
3902
3903         r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len);
3904         if (r == NULL)
3905                 return NL_SKIP;
3906         if (bss[NL80211_BSS_BSSID])
3907                 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
3908                           ETH_ALEN);
3909         if (bss[NL80211_BSS_FREQUENCY])
3910                 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
3911         if (bss[NL80211_BSS_BEACON_INTERVAL])
3912                 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
3913         if (bss[NL80211_BSS_CAPABILITY])
3914                 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
3915         r->flags |= WPA_SCAN_NOISE_INVALID;
3916         if (bss[NL80211_BSS_SIGNAL_MBM]) {
3917                 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
3918                 r->level /= 100; /* mBm to dBm */
3919                 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
3920         } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
3921                 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
3922                 r->flags |= WPA_SCAN_QUAL_INVALID;
3923         } else
3924                 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
3925         if (bss[NL80211_BSS_TSF])
3926                 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
3927         if (bss[NL80211_BSS_SEEN_MS_AGO])
3928                 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
3929         r->ie_len = ie_len;
3930         pos = (u8 *) (r + 1);
3931         if (ie) {
3932                 os_memcpy(pos, ie, ie_len);
3933                 pos += ie_len;
3934         }
3935         r->beacon_ie_len = beacon_ie_len;
3936         if (beacon_ie)
3937                 os_memcpy(pos, beacon_ie, beacon_ie_len);
3938
3939         if (bss[NL80211_BSS_STATUS]) {
3940                 enum nl80211_bss_status status;
3941                 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
3942                 switch (status) {
3943                 case NL80211_BSS_STATUS_AUTHENTICATED:
3944                         r->flags |= WPA_SCAN_AUTHENTICATED;
3945                         break;
3946                 case NL80211_BSS_STATUS_ASSOCIATED:
3947                         r->flags |= WPA_SCAN_ASSOCIATED;
3948                         break;
3949                 default:
3950                         break;
3951                 }
3952         }
3953
3954         /*
3955          * cfg80211 maintains separate BSS table entries for APs if the same
3956          * BSSID,SSID pair is seen on multiple channels. wpa_supplicant does
3957          * not use frequency as a separate key in the BSS table, so filter out
3958          * duplicated entries. Prefer associated BSS entry in such a case in
3959          * order to get the correct frequency into the BSS table.
3960          */
3961         for (i = 0; i < res->num; i++) {
3962                 const u8 *s1, *s2;
3963                 if (os_memcmp(res->res[i]->bssid, r->bssid, ETH_ALEN) != 0)
3964                         continue;
3965
3966                 s1 = nl80211_get_ie((u8 *) (res->res[i] + 1),
3967                                     res->res[i]->ie_len, WLAN_EID_SSID);
3968                 s2 = nl80211_get_ie((u8 *) (r + 1), r->ie_len, WLAN_EID_SSID);
3969                 if (s1 == NULL || s2 == NULL || s1[1] != s2[1] ||
3970                     os_memcmp(s1, s2, 2 + s1[1]) != 0)
3971                         continue;
3972
3973                 /* Same BSSID,SSID was already included in scan results */
3974                 wpa_printf(MSG_DEBUG, "nl80211: Remove duplicated scan result "
3975                            "for " MACSTR, MAC2STR(r->bssid));
3976
3977                 if ((r->flags & WPA_SCAN_ASSOCIATED) &&
3978                     !(res->res[i]->flags & WPA_SCAN_ASSOCIATED)) {
3979                         os_free(res->res[i]);
3980                         res->res[i] = r;
3981                 } else
3982                         os_free(r);
3983                 return NL_SKIP;
3984         }
3985
3986         tmp = os_realloc(res->res,
3987                          (res->num + 1) * sizeof(struct wpa_scan_res *));
3988         if (tmp == NULL) {
3989                 os_free(r);
3990                 return NL_SKIP;
3991         }
3992         tmp[res->num++] = r;
3993         res->res = tmp;
3994
3995         return NL_SKIP;
3996 }
3997
3998
3999 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
4000                                  const u8 *addr)
4001 {
4002         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
4003                 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
4004                            "mismatch (" MACSTR ")", MAC2STR(addr));
4005                 wpa_driver_nl80211_mlme(drv, addr,
4006                                         NL80211_CMD_DEAUTHENTICATE,
4007                                         WLAN_REASON_PREV_AUTH_NOT_VALID, 1);
4008         }
4009 }
4010
4011
4012 static void wpa_driver_nl80211_check_bss_status(
4013         struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
4014 {
4015         size_t i;
4016
4017         for (i = 0; i < res->num; i++) {
4018                 struct wpa_scan_res *r = res->res[i];
4019                 if (r->flags & WPA_SCAN_AUTHENTICATED) {
4020                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
4021                                    "indicates BSS status with " MACSTR
4022                                    " as authenticated",
4023                                    MAC2STR(r->bssid));
4024                         if (is_sta_interface(drv->nlmode) &&
4025                             os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
4026                             os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
4027                             0) {
4028                                 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
4029                                            " in local state (auth=" MACSTR
4030                                            " assoc=" MACSTR ")",
4031                                            MAC2STR(drv->auth_bssid),
4032                                            MAC2STR(drv->bssid));
4033                                 clear_state_mismatch(drv, r->bssid);
4034                         }
4035                 }
4036
4037                 if (r->flags & WPA_SCAN_ASSOCIATED) {
4038                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
4039                                    "indicate BSS status with " MACSTR
4040                                    " as associated",
4041                                    MAC2STR(r->bssid));
4042                         if (is_sta_interface(drv->nlmode) &&
4043                             !drv->associated) {
4044                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
4045                                            "(not associated) does not match "
4046                                            "with BSS state");
4047                                 clear_state_mismatch(drv, r->bssid);
4048                         } else if (is_sta_interface(drv->nlmode) &&
4049                                    os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
4050                                    0) {
4051                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
4052                                            "(associated with " MACSTR ") does "
4053                                            "not match with BSS state",
4054                                            MAC2STR(drv->bssid));
4055                                 clear_state_mismatch(drv, r->bssid);
4056                                 clear_state_mismatch(drv, drv->bssid);
4057                         }
4058                 }
4059         }
4060 }
4061
4062
4063 static struct wpa_scan_results *
4064 nl80211_get_scan_results(struct wpa_driver_nl80211_data *drv)
4065 {
4066         struct nl_msg *msg;
4067         struct wpa_scan_results *res;
4068         int ret;
4069         struct nl80211_bss_info_arg arg;
4070
4071         res = os_zalloc(sizeof(*res));
4072         if (res == NULL)
4073                 return NULL;
4074         msg = nlmsg_alloc();
4075         if (!msg)
4076                 goto nla_put_failure;
4077
4078         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
4079         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4080
4081         arg.drv = drv;
4082         arg.res = res;
4083         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
4084         msg = NULL;
4085         if (ret == 0) {
4086                 wpa_printf(MSG_DEBUG, "nl80211: Received scan results (%lu "
4087                            "BSSes)", (unsigned long) res->num);
4088                 nl80211_get_noise_for_scan_results(drv, res);
4089                 return res;
4090         }
4091         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
4092                    "(%s)", ret, strerror(-ret));
4093 nla_put_failure:
4094         nlmsg_free(msg);
4095         wpa_scan_results_free(res);
4096         return NULL;
4097 }
4098
4099
4100 /**
4101  * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
4102  * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
4103  * Returns: Scan results on success, -1 on failure
4104  */
4105 static struct wpa_scan_results *
4106 wpa_driver_nl80211_get_scan_results(void *priv)
4107 {
4108         struct i802_bss *bss = priv;
4109         struct wpa_driver_nl80211_data *drv = bss->drv;
4110         struct wpa_scan_results *res;
4111
4112         res = nl80211_get_scan_results(drv);
4113         if (res)
4114                 wpa_driver_nl80211_check_bss_status(drv, res);
4115         return res;
4116 }
4117
4118
4119 static void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv)
4120 {
4121         struct wpa_scan_results *res;
4122         size_t i;
4123
4124         res = nl80211_get_scan_results(drv);
4125         if (res == NULL) {
4126                 wpa_printf(MSG_DEBUG, "nl80211: Failed to get scan results");
4127                 return;
4128         }
4129
4130         wpa_printf(MSG_DEBUG, "nl80211: Scan result dump");
4131         for (i = 0; i < res->num; i++) {
4132                 struct wpa_scan_res *r = res->res[i];
4133                 wpa_printf(MSG_DEBUG, "nl80211: %d/%d " MACSTR "%s%s",
4134                            (int) i, (int) res->num, MAC2STR(r->bssid),
4135                            r->flags & WPA_SCAN_AUTHENTICATED ? " [auth]" : "",
4136                            r->flags & WPA_SCAN_ASSOCIATED ? " [assoc]" : "");
4137         }
4138
4139         wpa_scan_results_free(res);
4140 }
4141
4142
4143 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
4144                                       enum wpa_alg alg, const u8 *addr,
4145                                       int key_idx, int set_tx,
4146                                       const u8 *seq, size_t seq_len,
4147                                       const u8 *key, size_t key_len)
4148 {
4149         struct i802_bss *bss = priv;
4150         struct wpa_driver_nl80211_data *drv = bss->drv;
4151         int ifindex = if_nametoindex(ifname);
4152         struct nl_msg *msg;
4153         int ret;
4154
4155         wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
4156                    "set_tx=%d seq_len=%lu key_len=%lu",
4157                    __func__, ifindex, alg, addr, key_idx, set_tx,
4158                    (unsigned long) seq_len, (unsigned long) key_len);
4159 #ifdef CONFIG_TDLS
4160         if (key_idx == -1)
4161                 key_idx = 0;
4162 #endif /* CONFIG_TDLS */
4163
4164         msg = nlmsg_alloc();
4165         if (!msg)
4166                 return -ENOMEM;
4167
4168         if (alg == WPA_ALG_NONE) {
4169                 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_KEY);
4170         } else {
4171                 nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_KEY);
4172                 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
4173                 switch (alg) {
4174                 case WPA_ALG_WEP:
4175                         if (key_len == 5)
4176                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
4177                                             WLAN_CIPHER_SUITE_WEP40);
4178                         else
4179                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
4180                                             WLAN_CIPHER_SUITE_WEP104);
4181                         break;
4182                 case WPA_ALG_TKIP:
4183                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
4184                                     WLAN_CIPHER_SUITE_TKIP);
4185                         break;
4186                 case WPA_ALG_CCMP:
4187                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
4188                                     WLAN_CIPHER_SUITE_CCMP);
4189                         break;
4190                 case WPA_ALG_IGTK:
4191                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
4192                                     WLAN_CIPHER_SUITE_AES_CMAC);
4193                         break;
4194                 default:
4195                         wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
4196                                    "algorithm %d", __func__, alg);
4197                         nlmsg_free(msg);
4198                         return -1;
4199                 }
4200         }
4201
4202         if (seq && seq_len)
4203                 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
4204
4205         if (addr && !is_broadcast_ether_addr(addr)) {
4206                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
4207                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4208
4209                 if (alg != WPA_ALG_WEP && key_idx && !set_tx) {
4210                         wpa_printf(MSG_DEBUG, "   RSN IBSS RX GTK");
4211                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_TYPE,
4212                                     NL80211_KEYTYPE_GROUP);
4213                 }
4214         } else if (addr && is_broadcast_ether_addr(addr)) {
4215                 struct nl_msg *types;
4216                 int err;
4217                 wpa_printf(MSG_DEBUG, "   broadcast key");
4218                 types = nlmsg_alloc();
4219                 if (!types)
4220                         goto nla_put_failure;
4221                 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST);
4222                 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES,
4223                                      types);
4224                 nlmsg_free(types);
4225                 if (err)
4226                         goto nla_put_failure;
4227         }
4228         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
4229         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4230
4231         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4232         if ((ret == -ENOENT || ret == -ENOLINK) && alg == WPA_ALG_NONE)
4233                 ret = 0;
4234         if (ret)
4235                 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
4236                            ret, strerror(-ret));
4237
4238         /*
4239          * If we failed or don't need to set the default TX key (below),
4240          * we're done here.
4241          */
4242         if (ret || !set_tx || alg == WPA_ALG_NONE)
4243                 return ret;
4244         if (is_ap_interface(drv->nlmode) && addr &&
4245             !is_broadcast_ether_addr(addr))
4246                 return ret;
4247
4248         msg = nlmsg_alloc();
4249         if (!msg)
4250                 return -ENOMEM;
4251
4252         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_KEY);
4253         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
4254         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
4255         if (alg == WPA_ALG_IGTK)
4256                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
4257         else
4258                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
4259         if (addr && is_broadcast_ether_addr(addr)) {
4260                 struct nl_msg *types;
4261                 int err;
4262                 types = nlmsg_alloc();
4263                 if (!types)
4264                         goto nla_put_failure;
4265                 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_MULTICAST);
4266                 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES,
4267                                      types);
4268                 nlmsg_free(types);
4269                 if (err)
4270                         goto nla_put_failure;
4271         } else if (addr) {
4272                 struct nl_msg *types;
4273                 int err;
4274                 types = nlmsg_alloc();
4275                 if (!types)
4276                         goto nla_put_failure;
4277                 NLA_PUT_FLAG(types, NL80211_KEY_DEFAULT_TYPE_UNICAST);
4278                 err = nla_put_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES,
4279                                      types);
4280                 nlmsg_free(types);
4281                 if (err)
4282                         goto nla_put_failure;
4283         }
4284
4285         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4286         if (ret == -ENOENT)
4287                 ret = 0;
4288         if (ret)
4289                 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
4290                            "err=%d %s)", ret, strerror(-ret));
4291         return ret;
4292
4293 nla_put_failure:
4294         nlmsg_free(msg);
4295         return -ENOBUFS;
4296 }
4297
4298
4299 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
4300                       int key_idx, int defkey,
4301                       const u8 *seq, size_t seq_len,
4302                       const u8 *key, size_t key_len)
4303 {
4304         struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
4305         if (!key_attr)
4306                 return -1;
4307
4308         if (defkey && alg == WPA_ALG_IGTK)
4309                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
4310         else if (defkey)
4311                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
4312
4313         NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
4314
4315         switch (alg) {
4316         case WPA_ALG_WEP:
4317                 if (key_len == 5)
4318                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
4319                                     WLAN_CIPHER_SUITE_WEP40);
4320                 else
4321                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
4322                                     WLAN_CIPHER_SUITE_WEP104);
4323                 break;
4324         case WPA_ALG_TKIP:
4325                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
4326                 break;
4327         case WPA_ALG_CCMP:
4328                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
4329                 break;
4330         case WPA_ALG_IGTK:
4331                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
4332                             WLAN_CIPHER_SUITE_AES_CMAC);
4333                 break;
4334         default:
4335                 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
4336                            "algorithm %d", __func__, alg);
4337                 return -1;
4338         }
4339
4340         if (seq && seq_len)
4341                 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
4342
4343         NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
4344
4345         nla_nest_end(msg, key_attr);
4346
4347         return 0;
4348  nla_put_failure:
4349         return -1;
4350 }
4351
4352
4353 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
4354                                  struct nl_msg *msg)
4355 {
4356         int i, privacy = 0;
4357         struct nlattr *nl_keys, *nl_key;
4358
4359         for (i = 0; i < 4; i++) {
4360                 if (!params->wep_key[i])
4361                         continue;
4362                 privacy = 1;
4363                 break;
4364         }
4365         if (params->wps == WPS_MODE_PRIVACY)
4366                 privacy = 1;
4367         if (params->pairwise_suite &&
4368             params->pairwise_suite != WPA_CIPHER_NONE)
4369                 privacy = 1;
4370
4371         if (!privacy)
4372                 return 0;
4373
4374         NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
4375
4376         nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
4377         if (!nl_keys)
4378                 goto nla_put_failure;
4379
4380         for (i = 0; i < 4; i++) {
4381                 if (!params->wep_key[i])
4382                         continue;
4383
4384                 nl_key = nla_nest_start(msg, i);
4385                 if (!nl_key)
4386                         goto nla_put_failure;
4387
4388                 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
4389                         params->wep_key[i]);
4390                 if (params->wep_key_len[i] == 5)
4391                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
4392                                     WLAN_CIPHER_SUITE_WEP40);
4393                 else
4394                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
4395                                     WLAN_CIPHER_SUITE_WEP104);
4396
4397                 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
4398
4399                 if (i == params->wep_tx_keyidx)
4400                         NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
4401
4402                 nla_nest_end(msg, nl_key);
4403         }
4404         nla_nest_end(msg, nl_keys);
4405
4406         return 0;
4407
4408 nla_put_failure:
4409         return -ENOBUFS;
4410 }
4411
4412
4413 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
4414                                    const u8 *addr, int cmd, u16 reason_code,
4415                                    int local_state_change)
4416 {
4417         int ret = -1;
4418         struct nl_msg *msg;
4419
4420         msg = nlmsg_alloc();
4421         if (!msg)
4422                 return -1;
4423
4424         nl80211_cmd(drv, msg, 0, cmd);
4425
4426         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4427         NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
4428         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4429         if (local_state_change)
4430                 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
4431
4432         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4433         msg = NULL;
4434         if (ret) {
4435                 wpa_dbg(drv->ctx, MSG_DEBUG,
4436                         "nl80211: MLME command failed: reason=%u ret=%d (%s)",
4437                         reason_code, ret, strerror(-ret));
4438                 goto nla_put_failure;
4439         }
4440         ret = 0;
4441
4442 nla_put_failure:
4443         nlmsg_free(msg);
4444         return ret;
4445 }
4446
4447
4448 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
4449                                          const u8 *addr, int reason_code)
4450 {
4451         wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
4452                    __func__, MAC2STR(addr), reason_code);
4453         drv->associated = 0;
4454         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
4455                                        reason_code, 0);
4456 }
4457
4458
4459 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
4460                                              int reason_code)
4461 {
4462         struct i802_bss *bss = priv;
4463         struct wpa_driver_nl80211_data *drv = bss->drv;
4464         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
4465                 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
4466         wpa_printf(MSG_DEBUG, "%s(addr=" MACSTR " reason_code=%d)",
4467                    __func__, MAC2STR(addr), reason_code);
4468         drv->associated = 0;
4469         if (drv->nlmode == NL80211_IFTYPE_ADHOC)
4470                 return nl80211_leave_ibss(drv);
4471         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
4472                                        reason_code, 0);
4473 }
4474
4475
4476 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
4477                                            int reason_code)
4478 {
4479         struct i802_bss *bss = priv;
4480         struct wpa_driver_nl80211_data *drv = bss->drv;
4481         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
4482                 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
4483         wpa_printf(MSG_DEBUG, "%s", __func__);
4484         drv->associated = 0;
4485         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
4486                                        reason_code, 0);
4487 }
4488
4489
4490 static void nl80211_copy_auth_params(struct wpa_driver_nl80211_data *drv,
4491                                      struct wpa_driver_auth_params *params)
4492 {
4493         int i;
4494
4495         drv->auth_freq = params->freq;
4496         drv->auth_alg = params->auth_alg;
4497         drv->auth_wep_tx_keyidx = params->wep_tx_keyidx;
4498         drv->auth_local_state_change = params->local_state_change;
4499         drv->auth_p2p = params->p2p;
4500
4501         if (params->bssid)
4502                 os_memcpy(drv->auth_bssid_, params->bssid, ETH_ALEN);
4503         else
4504                 os_memset(drv->auth_bssid_, 0, ETH_ALEN);
4505
4506         if (params->ssid) {
4507                 os_memcpy(drv->auth_ssid, params->ssid, params->ssid_len);
4508                 drv->auth_ssid_len = params->ssid_len;
4509         } else
4510                 drv->auth_ssid_len = 0;
4511
4512
4513         os_free(drv->auth_ie);
4514         drv->auth_ie = NULL;
4515         drv->auth_ie_len = 0;
4516         if (params->ie) {
4517                 drv->auth_ie = os_malloc(params->ie_len);
4518                 if (drv->auth_ie) {
4519                         os_memcpy(drv->auth_ie, params->ie, params->ie_len);
4520                         drv->auth_ie_len = params->ie_len;
4521                 }
4522         }
4523
4524         for (i = 0; i < 4; i++) {
4525                 if (params->wep_key[i] && params->wep_key_len[i] &&
4526                     params->wep_key_len[i] <= 16) {
4527                         os_memcpy(drv->auth_wep_key[i], params->wep_key[i],
4528                                   params->wep_key_len[i]);
4529                         drv->auth_wep_key_len[i] = params->wep_key_len[i];
4530                 } else
4531                         drv->auth_wep_key_len[i] = 0;
4532         }
4533 }
4534
4535
4536 static int wpa_driver_nl80211_authenticate(
4537         void *priv, struct wpa_driver_auth_params *params)
4538 {
4539         struct i802_bss *bss = priv;
4540         struct wpa_driver_nl80211_data *drv = bss->drv;
4541         int ret = -1, i;
4542         struct nl_msg *msg;
4543         enum nl80211_auth_type type;
4544         enum nl80211_iftype nlmode;
4545         int count = 0;
4546         int is_retry;
4547
4548         is_retry = drv->retry_auth;
4549         drv->retry_auth = 0;
4550
4551         drv->associated = 0;
4552         os_memset(drv->auth_bssid, 0, ETH_ALEN);
4553         /* FIX: IBSS mode */
4554         nlmode = params->p2p ?
4555                 NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
4556         if (drv->nlmode != nlmode &&
4557             wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
4558                 return -1;
4559
4560 retry:
4561         msg = nlmsg_alloc();
4562         if (!msg)
4563                 return -1;
4564
4565         wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
4566                    drv->ifindex);
4567
4568         nl80211_cmd(drv, msg, 0, NL80211_CMD_AUTHENTICATE);
4569
4570         for (i = 0; i < 4; i++) {
4571                 if (!params->wep_key[i])
4572                         continue;
4573                 wpa_driver_nl80211_set_key(bss->ifname, priv, WPA_ALG_WEP,
4574                                            NULL, i,
4575                                            i == params->wep_tx_keyidx, NULL, 0,
4576                                            params->wep_key[i],
4577                                            params->wep_key_len[i]);
4578                 if (params->wep_tx_keyidx != i)
4579                         continue;
4580                 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
4581                                params->wep_key[i], params->wep_key_len[i])) {
4582                         nlmsg_free(msg);
4583                         return -1;
4584                 }
4585         }
4586
4587         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4588         if (params->bssid) {
4589                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
4590                            MAC2STR(params->bssid));
4591                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
4592         }
4593         if (params->freq) {
4594                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
4595                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
4596         }
4597         if (params->ssid) {
4598                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
4599                                   params->ssid, params->ssid_len);
4600                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
4601                         params->ssid);
4602         }
4603         wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
4604         if (params->ie)
4605                 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
4606         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
4607                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
4608         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
4609                 type = NL80211_AUTHTYPE_SHARED_KEY;
4610         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
4611                 type = NL80211_AUTHTYPE_NETWORK_EAP;
4612         else if (params->auth_alg & WPA_AUTH_ALG_FT)
4613                 type = NL80211_AUTHTYPE_FT;
4614         else
4615                 goto nla_put_failure;
4616         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
4617         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
4618         if (params->local_state_change) {
4619                 wpa_printf(MSG_DEBUG, "  * Local state change only");
4620                 NLA_PUT_FLAG(msg, NL80211_ATTR_LOCAL_STATE_CHANGE);
4621         }
4622
4623         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4624         msg = NULL;
4625         if (ret) {
4626                 wpa_dbg(drv->ctx, MSG_DEBUG,
4627                         "nl80211: MLME command failed (auth): ret=%d (%s)",
4628                         ret, strerror(-ret));
4629                 count++;
4630                 if (ret == -EALREADY && count == 1 && params->bssid &&
4631                     !params->local_state_change) {
4632                         /*
4633                          * mac80211 does not currently accept new
4634                          * authentication if we are already authenticated. As a
4635                          * workaround, force deauthentication and try again.
4636                          */
4637                         wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
4638                                    "after forced deauthentication");
4639                         wpa_driver_nl80211_deauthenticate(
4640                                 bss, params->bssid,
4641                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
4642                         nlmsg_free(msg);
4643                         goto retry;
4644                 }
4645
4646                 if (ret == -ENOENT && params->freq && !is_retry) {
4647                         /*
4648                          * cfg80211 has likely expired the BSS entry even
4649                          * though it was previously available in our internal
4650                          * BSS table. To recover quickly, start a single
4651                          * channel scan on the specified channel.
4652                          */
4653                         struct wpa_driver_scan_params scan;
4654                         int freqs[2];
4655
4656                         os_memset(&scan, 0, sizeof(scan));
4657                         scan.num_ssids = 1;
4658                         if (params->ssid) {
4659                                 scan.ssids[0].ssid = params->ssid;
4660                                 scan.ssids[0].ssid_len = params->ssid_len;
4661                         }
4662                         freqs[0] = params->freq;
4663                         freqs[1] = 0;
4664                         scan.freqs = freqs;
4665                         wpa_printf(MSG_DEBUG, "nl80211: Trigger single "
4666                                    "channel scan to refresh cfg80211 BSS "
4667                                    "entry");
4668                         ret = wpa_driver_nl80211_scan(bss, &scan);
4669                         if (ret == 0) {
4670                                 nl80211_copy_auth_params(drv, params);
4671                                 drv->scan_for_auth = 1;
4672                         }
4673                 } else if (is_retry) {
4674                         /*
4675                          * Need to indicate this with an event since the return
4676                          * value from the retry is not delivered to core code.
4677                          */
4678                         union wpa_event_data event;
4679                         wpa_printf(MSG_DEBUG, "nl80211: Authentication retry "
4680                                    "failed");
4681                         os_memset(&event, 0, sizeof(event));
4682                         os_memcpy(event.timeout_event.addr, drv->auth_bssid_,
4683                                   ETH_ALEN);
4684                         wpa_supplicant_event(drv->ctx, EVENT_AUTH_TIMED_OUT,
4685                                              &event);
4686                 }
4687
4688                 goto nla_put_failure;
4689         }
4690         ret = 0;
4691         wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
4692                    "successfully");
4693
4694 nla_put_failure:
4695         nlmsg_free(msg);
4696         return ret;
4697 }
4698
4699
4700 static int wpa_driver_nl80211_authenticate_retry(
4701         struct wpa_driver_nl80211_data *drv)
4702 {
4703         struct wpa_driver_auth_params params;
4704         struct i802_bss *bss = &drv->first_bss;
4705         int i;
4706
4707         wpa_printf(MSG_DEBUG, "nl80211: Try to authenticate again");
4708
4709         os_memset(&params, 0, sizeof(params));
4710         params.freq = drv->auth_freq;
4711         params.auth_alg = drv->auth_alg;
4712         params.wep_tx_keyidx = drv->auth_wep_tx_keyidx;
4713         params.local_state_change = drv->auth_local_state_change;
4714         params.p2p = drv->auth_p2p;
4715
4716         if (!is_zero_ether_addr(drv->auth_bssid_))
4717                 params.bssid = drv->auth_bssid_;
4718
4719         if (drv->auth_ssid_len) {
4720                 params.ssid = drv->auth_ssid;
4721                 params.ssid_len = drv->auth_ssid_len;
4722         }
4723
4724         params.ie = drv->auth_ie;
4725         params.ie_len = drv->auth_ie_len;
4726
4727         for (i = 0; i < 4; i++) {
4728                 if (drv->auth_wep_key_len[i]) {
4729                         params.wep_key[i] = drv->auth_wep_key[i];
4730                         params.wep_key_len[i] = drv->auth_wep_key_len[i];
4731                 }
4732         }
4733
4734         drv->retry_auth = 1;
4735         return wpa_driver_nl80211_authenticate(bss, &params);
4736 }
4737
4738
4739 struct phy_info_arg {
4740         u16 *num_modes;
4741         struct hostapd_hw_modes *modes;
4742 };
4743
4744 static int phy_info_handler(struct nl_msg *msg, void *arg)
4745 {
4746         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
4747         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4748         struct phy_info_arg *phy_info = arg;
4749
4750         struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
4751
4752         struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
4753         static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
4754                 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
4755                 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
4756                 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
4757                 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
4758                 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
4759                 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
4760         };
4761
4762         struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
4763         static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
4764                 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
4765                 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
4766         };
4767
4768         struct nlattr *nl_band;
4769         struct nlattr *nl_freq;
4770         struct nlattr *nl_rate;
4771         int rem_band, rem_freq, rem_rate;
4772         struct hostapd_hw_modes *mode;
4773         int idx, mode_is_set;
4774
4775         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4776                   genlmsg_attrlen(gnlh, 0), NULL);
4777
4778         if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
4779                 return NL_SKIP;
4780
4781         nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
4782                 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
4783                 if (!mode)
4784                         return NL_SKIP;
4785                 phy_info->modes = mode;
4786
4787                 mode_is_set = 0;
4788
4789                 mode = &phy_info->modes[*(phy_info->num_modes)];
4790                 memset(mode, 0, sizeof(*mode));
4791                 mode->flags = HOSTAPD_MODE_FLAG_HT_INFO_KNOWN;
4792                 *(phy_info->num_modes) += 1;
4793
4794                 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
4795                           nla_len(nl_band), NULL);
4796
4797                 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
4798                         mode->ht_capab = nla_get_u16(
4799                                 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
4800                 }
4801
4802                 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
4803                         mode->a_mpdu_params |= nla_get_u8(
4804                                 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
4805                                 0x03;
4806                 }
4807
4808                 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
4809                         mode->a_mpdu_params |= nla_get_u8(
4810                                 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
4811                                 2;
4812                 }
4813
4814                 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
4815                     nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
4816                         u8 *mcs;
4817                         mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
4818                         os_memcpy(mode->mcs_set, mcs, 16);
4819                 }
4820
4821                 if (tb_band[NL80211_BAND_ATTR_VHT_CAPA]) {
4822                         mode->vht_capab = nla_get_u32(
4823                                 tb_band[NL80211_BAND_ATTR_VHT_CAPA]);
4824                 }
4825
4826                 if (tb_band[NL80211_BAND_ATTR_VHT_MCS_SET] &&
4827                     nla_len(tb_band[NL80211_BAND_ATTR_VHT_MCS_SET])) {
4828                         u8 *mcs;
4829                         mcs = nla_data(tb_band[NL80211_BAND_ATTR_VHT_MCS_SET]);
4830                         os_memcpy(mode->vht_mcs_set, mcs, 8);
4831                 }
4832
4833                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
4834                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
4835                                   nla_len(nl_freq), freq_policy);
4836                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
4837                                 continue;
4838                         mode->num_channels++;
4839                 }
4840
4841                 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data));
4842                 if (!mode->channels)
4843                         return NL_SKIP;
4844
4845                 idx = 0;
4846
4847                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
4848                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
4849                                   nla_len(nl_freq), freq_policy);
4850                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
4851                                 continue;
4852
4853                         mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
4854                         mode->channels[idx].flag = 0;
4855
4856                         if (!mode_is_set) {
4857                                 /* crude heuristic */
4858                                 if (mode->channels[idx].freq < 4000)
4859                                         mode->mode = HOSTAPD_MODE_IEEE80211B;
4860                                 else
4861                                         mode->mode = HOSTAPD_MODE_IEEE80211A;
4862                                 mode_is_set = 1;
4863                         }
4864
4865                         /* crude heuristic */
4866                         if (mode->channels[idx].freq < 4000)
4867                                 if (mode->channels[idx].freq == 2484)
4868                                         mode->channels[idx].chan = 14;
4869                                 else
4870                                         mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
4871                         else
4872                                 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
4873
4874                         if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
4875                                 mode->channels[idx].flag |=
4876                                         HOSTAPD_CHAN_DISABLED;
4877                         if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
4878                                 mode->channels[idx].flag |=
4879                                         HOSTAPD_CHAN_PASSIVE_SCAN;
4880                         if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
4881                                 mode->channels[idx].flag |=
4882                                         HOSTAPD_CHAN_NO_IBSS;
4883                         if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
4884                                 mode->channels[idx].flag |=
4885                                         HOSTAPD_CHAN_RADAR;
4886
4887                         if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
4888                             !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
4889                                 mode->channels[idx].max_tx_power =
4890                                         nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
4891
4892                         idx++;
4893                 }
4894
4895                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
4896                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
4897                                   nla_len(nl_rate), rate_policy);
4898                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
4899                                 continue;
4900                         mode->num_rates++;
4901                 }
4902
4903                 mode->rates = os_zalloc(mode->num_rates * sizeof(int));
4904                 if (!mode->rates)
4905                         return NL_SKIP;
4906
4907                 idx = 0;
4908
4909                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
4910                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
4911                                   nla_len(nl_rate), rate_policy);
4912                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
4913                                 continue;
4914                         mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
4915
4916                         /* crude heuristic */
4917                         if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
4918                             mode->rates[idx] > 200)
4919                                 mode->mode = HOSTAPD_MODE_IEEE80211G;
4920
4921                         idx++;
4922                 }
4923         }
4924
4925         return NL_SKIP;
4926 }
4927
4928 static struct hostapd_hw_modes *
4929 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
4930 {
4931         u16 m;
4932         struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
4933         int i, mode11g_idx = -1;
4934
4935         /* If only 802.11g mode is included, use it to construct matching
4936          * 802.11b mode data. */
4937
4938         for (m = 0; m < *num_modes; m++) {
4939                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
4940                         return modes; /* 802.11b already included */
4941                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
4942                         mode11g_idx = m;
4943         }
4944
4945         if (mode11g_idx < 0)
4946                 return modes; /* 2.4 GHz band not supported at all */
4947
4948         nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
4949         if (nmodes == NULL)
4950                 return modes; /* Could not add 802.11b mode */
4951
4952         mode = &nmodes[*num_modes];
4953         os_memset(mode, 0, sizeof(*mode));
4954         (*num_modes)++;
4955         modes = nmodes;
4956
4957         mode->mode = HOSTAPD_MODE_IEEE80211B;
4958
4959         mode11g = &modes[mode11g_idx];
4960         mode->num_channels = mode11g->num_channels;
4961         mode->channels = os_malloc(mode11g->num_channels *
4962                                    sizeof(struct hostapd_channel_data));
4963         if (mode->channels == NULL) {
4964                 (*num_modes)--;
4965                 return modes; /* Could not add 802.11b mode */
4966         }
4967         os_memcpy(mode->channels, mode11g->channels,
4968                   mode11g->num_channels * sizeof(struct hostapd_channel_data));
4969
4970         mode->num_rates = 0;
4971         mode->rates = os_malloc(4 * sizeof(int));
4972         if (mode->rates == NULL) {
4973                 os_free(mode->channels);
4974                 (*num_modes)--;
4975                 return modes; /* Could not add 802.11b mode */
4976         }
4977
4978         for (i = 0; i < mode11g->num_rates; i++) {
4979                 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
4980                     mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
4981                         continue;
4982                 mode->rates[mode->num_rates] = mode11g->rates[i];
4983                 mode->num_rates++;
4984                 if (mode->num_rates == 4)
4985                         break;
4986         }
4987
4988         if (mode->num_rates == 0) {
4989                 os_free(mode->channels);
4990                 os_free(mode->rates);
4991                 (*num_modes)--;
4992                 return modes; /* No 802.11b rates */
4993         }
4994
4995         wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
4996                    "information");
4997
4998         return modes;
4999 }
5000
5001
5002 static void nl80211_set_ht40_mode(struct hostapd_hw_modes *mode, int start,
5003                                   int end)
5004 {
5005         int c;
5006
5007         for (c = 0; c < mode->num_channels; c++) {
5008                 struct hostapd_channel_data *chan = &mode->channels[c];
5009                 if (chan->freq - 10 >= start && chan->freq + 10 <= end)
5010                         chan->flag |= HOSTAPD_CHAN_HT40;
5011         }
5012 }
5013
5014
5015 static void nl80211_set_ht40_mode_sec(struct hostapd_hw_modes *mode, int start,
5016                                       int end)
5017 {
5018         int c;
5019
5020         for (c = 0; c < mode->num_channels; c++) {
5021                 struct hostapd_channel_data *chan = &mode->channels[c];
5022                 if (!(chan->flag & HOSTAPD_CHAN_HT40))
5023                         continue;
5024                 if (chan->freq - 30 >= start && chan->freq - 10 <= end)
5025                         chan->flag |= HOSTAPD_CHAN_HT40MINUS;
5026                 if (chan->freq + 10 >= start && chan->freq + 30 <= end)
5027                         chan->flag |= HOSTAPD_CHAN_HT40PLUS;
5028         }
5029 }
5030
5031
5032 static void nl80211_reg_rule_ht40(struct nlattr *tb[],
5033                                   struct phy_info_arg *results)
5034 {
5035         u32 start, end, max_bw;
5036         u16 m;
5037
5038         if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
5039             tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
5040             tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
5041                 return;
5042
5043         start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
5044         end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
5045         max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
5046
5047         wpa_printf(MSG_DEBUG, "nl80211: %u-%u @ %u MHz",
5048                    start, end, max_bw);
5049         if (max_bw < 40)
5050                 return;
5051
5052         for (m = 0; m < *results->num_modes; m++) {
5053                 if (!(results->modes[m].ht_capab &
5054                       HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
5055                         continue;
5056                 nl80211_set_ht40_mode(&results->modes[m], start, end);
5057         }
5058 }
5059
5060
5061 static void nl80211_reg_rule_sec(struct nlattr *tb[],
5062                                  struct phy_info_arg *results)
5063 {
5064         u32 start, end, max_bw;
5065         u16 m;
5066
5067         if (tb[NL80211_ATTR_FREQ_RANGE_START] == NULL ||
5068             tb[NL80211_ATTR_FREQ_RANGE_END] == NULL ||
5069             tb[NL80211_ATTR_FREQ_RANGE_MAX_BW] == NULL)
5070                 return;
5071
5072         start = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]) / 1000;
5073         end = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]) / 1000;
5074         max_bw = nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) / 1000;
5075
5076         if (max_bw < 20)
5077                 return;
5078
5079         for (m = 0; m < *results->num_modes; m++) {
5080                 if (!(results->modes[m].ht_capab &
5081                       HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
5082                         continue;
5083                 nl80211_set_ht40_mode_sec(&results->modes[m], start, end);
5084         }
5085 }
5086
5087
5088 static int nl80211_get_reg(struct nl_msg *msg, void *arg)
5089 {
5090         struct phy_info_arg *results = arg;
5091         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
5092         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
5093         struct nlattr *nl_rule;
5094         struct nlattr *tb_rule[NL80211_FREQUENCY_ATTR_MAX + 1];
5095         int rem_rule;
5096         static struct nla_policy reg_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
5097                 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
5098                 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
5099                 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
5100                 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
5101                 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
5102                 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
5103         };
5104
5105         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
5106                   genlmsg_attrlen(gnlh, 0), NULL);
5107         if (!tb_msg[NL80211_ATTR_REG_ALPHA2] ||
5108             !tb_msg[NL80211_ATTR_REG_RULES]) {
5109                 wpa_printf(MSG_DEBUG, "nl80211: No regulatory information "
5110                            "available");
5111                 return NL_SKIP;
5112         }
5113
5114         wpa_printf(MSG_DEBUG, "nl80211: Regulatory information - country=%s",
5115                    (char *) nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]));
5116
5117         nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
5118         {
5119                 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
5120                           nla_data(nl_rule), nla_len(nl_rule), reg_policy);
5121                 nl80211_reg_rule_ht40(tb_rule, results);
5122         }
5123
5124         nla_for_each_nested(nl_rule, tb_msg[NL80211_ATTR_REG_RULES], rem_rule)
5125         {
5126                 nla_parse(tb_rule, NL80211_FREQUENCY_ATTR_MAX,
5127                           nla_data(nl_rule), nla_len(nl_rule), reg_policy);
5128                 nl80211_reg_rule_sec(tb_rule, results);
5129         }
5130
5131         return NL_SKIP;
5132 }
5133
5134
5135 static int nl80211_set_ht40_flags(struct wpa_driver_nl80211_data *drv,
5136                                   struct phy_info_arg *results)
5137 {
5138         struct nl_msg *msg;
5139
5140         msg = nlmsg_alloc();
5141         if (!msg)
5142                 return -ENOMEM;
5143
5144         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG);
5145         return send_and_recv_msgs(drv, msg, nl80211_get_reg, results);
5146 }
5147
5148
5149 static struct hostapd_hw_modes *
5150 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
5151 {
5152         struct i802_bss *bss = priv;
5153         struct wpa_driver_nl80211_data *drv = bss->drv;
5154         struct nl_msg *msg;
5155         struct phy_info_arg result = {
5156                 .num_modes = num_modes,
5157                 .modes = NULL,
5158         };
5159
5160         *num_modes = 0;
5161         *flags = 0;
5162
5163         msg = nlmsg_alloc();
5164         if (!msg)
5165                 return NULL;
5166
5167         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY);
5168
5169         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5170
5171         if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) {
5172                 nl80211_set_ht40_flags(drv, &result);
5173                 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
5174         }
5175         msg = NULL;
5176  nla_put_failure:
5177         nlmsg_free(msg);
5178         return NULL;
5179 }
5180
5181
5182 static int wpa_driver_nl80211_send_mntr(struct wpa_driver_nl80211_data *drv,
5183                                         const void *data, size_t len,
5184                                         int encrypt, int noack)
5185 {
5186         __u8 rtap_hdr[] = {
5187                 0x00, 0x00, /* radiotap version */
5188                 0x0e, 0x00, /* radiotap length */
5189                 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
5190                 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
5191                 0x00,       /* padding */
5192                 0x00, 0x00, /* RX and TX flags to indicate that */
5193                 0x00, 0x00, /* this is the injected frame directly */
5194         };
5195         struct iovec iov[2] = {
5196                 {
5197                         .iov_base = &rtap_hdr,
5198                         .iov_len = sizeof(rtap_hdr),
5199                 },
5200                 {
5201                         .iov_base = (void *) data,
5202                         .iov_len = len,
5203                 }
5204         };
5205         struct msghdr msg = {
5206                 .msg_name = NULL,
5207                 .msg_namelen = 0,
5208                 .msg_iov = iov,
5209                 .msg_iovlen = 2,
5210                 .msg_control = NULL,
5211                 .msg_controllen = 0,
5212                 .msg_flags = 0,
5213         };
5214         int res;
5215         u16 txflags = 0;
5216
5217         if (encrypt)
5218                 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
5219
5220         if (drv->monitor_sock < 0) {
5221                 wpa_printf(MSG_DEBUG, "nl80211: No monitor socket available "
5222                            "for %s", __func__);
5223                 return -1;
5224         }
5225
5226         if (noack)
5227                 txflags |= IEEE80211_RADIOTAP_F_TX_NOACK;
5228         *(le16 *) &rtap_hdr[12] = host_to_le16(txflags);
5229
5230         res = sendmsg(drv->monitor_sock, &msg, 0);
5231         if (res < 0) {
5232                 wpa_printf(MSG_INFO, "nl80211: sendmsg: %s", strerror(errno));
5233                 return -1;
5234         }
5235         return 0;
5236 }
5237
5238
5239 static int wpa_driver_nl80211_send_frame(struct i802_bss *bss,
5240                                          const void *data, size_t len,
5241                                          int encrypt, int noack,
5242                                          unsigned int freq, int no_cck,
5243                                          int offchanok, unsigned int wait_time)
5244 {
5245         struct wpa_driver_nl80211_data *drv = bss->drv;
5246         u64 cookie;
5247
5248         if (freq == 0)
5249                 freq = bss->freq;
5250
5251         if (drv->use_monitor)
5252                 return wpa_driver_nl80211_send_mntr(drv, data, len,
5253                                                     encrypt, noack);
5254
5255         return nl80211_send_frame_cmd(bss, freq, wait_time, data, len,
5256                                       &cookie, no_cck, noack, offchanok);
5257 }
5258
5259
5260 static int wpa_driver_nl80211_send_mlme_freq(struct i802_bss *bss,
5261                                              const u8 *data,
5262                                              size_t data_len, int noack,
5263                                              unsigned int freq, int no_cck,
5264                                              int offchanok,
5265                                              unsigned int wait_time)
5266 {
5267         struct wpa_driver_nl80211_data *drv = bss->drv;
5268         struct ieee80211_mgmt *mgmt;
5269         int encrypt = 1;
5270         u16 fc;
5271
5272         mgmt = (struct ieee80211_mgmt *) data;
5273         fc = le_to_host16(mgmt->frame_control);
5274
5275         if (is_sta_interface(drv->nlmode) &&
5276             WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
5277             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
5278                 /*
5279                  * The use of last_mgmt_freq is a bit of a hack,
5280                  * but it works due to the single-threaded nature
5281                  * of wpa_supplicant.
5282                  */
5283                 if (freq == 0)
5284                         freq = drv->last_mgmt_freq;
5285                 return nl80211_send_frame_cmd(bss, freq, 0,
5286                                               data, data_len, NULL, 1, noack,
5287                                               1);
5288         }
5289
5290         if (drv->device_ap_sme && is_ap_interface(drv->nlmode)) {
5291                 if (freq == 0)
5292                         freq = bss->freq;
5293                 return nl80211_send_frame_cmd(bss, freq,
5294                                               (int) freq == bss->freq ? 0 :
5295                                               wait_time,
5296                                               data, data_len,
5297                                               &drv->send_action_cookie,
5298                                               no_cck, noack, offchanok);
5299         }
5300
5301         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
5302             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
5303                 /*
5304                  * Only one of the authentication frame types is encrypted.
5305                  * In order for static WEP encryption to work properly (i.e.,
5306                  * to not encrypt the frame), we need to tell mac80211 about
5307                  * the frames that must not be encrypted.
5308                  */
5309                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
5310                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
5311                 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
5312                         encrypt = 0;
5313         }
5314
5315         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt,
5316                                              noack, freq, no_cck, offchanok,
5317                                              wait_time);
5318 }
5319
5320
5321 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
5322                                         size_t data_len, int noack)
5323 {
5324         struct i802_bss *bss = priv;
5325         return wpa_driver_nl80211_send_mlme_freq(bss, data, data_len, noack,
5326                                                  0, 0, 0, 0);
5327 }
5328
5329
5330 static int nl80211_set_bss(struct i802_bss *bss, int cts, int preamble,
5331                            int slot, int ht_opmode, int ap_isolate,
5332                            int *basic_rates)
5333 {
5334         struct wpa_driver_nl80211_data *drv = bss->drv;
5335         struct nl_msg *msg;
5336
5337         msg = nlmsg_alloc();
5338         if (!msg)
5339                 return -ENOMEM;
5340
5341         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_BSS);
5342
5343         if (cts >= 0)
5344                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
5345         if (preamble >= 0)
5346                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
5347         if (slot >= 0)
5348                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
5349         if (ht_opmode >= 0)
5350                 NLA_PUT_U16(msg, NL80211_ATTR_BSS_HT_OPMODE, ht_opmode);
5351         if (ap_isolate >= 0)
5352                 NLA_PUT_U8(msg, NL80211_ATTR_AP_ISOLATE, ap_isolate);
5353
5354         if (basic_rates) {
5355                 u8 rates[NL80211_MAX_SUPP_RATES];
5356                 u8 rates_len = 0;
5357                 int i;
5358
5359                 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0;
5360                      i++)
5361                         rates[rates_len++] = basic_rates[i] / 5;
5362
5363                 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
5364         }
5365
5366         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
5367
5368         return send_and_recv_msgs(drv, msg, NULL, NULL);
5369  nla_put_failure:
5370         nlmsg_free(msg);
5371         return -ENOBUFS;
5372 }
5373
5374
5375 static int wpa_driver_nl80211_set_ap(void *priv,
5376                                      struct wpa_driver_ap_params *params)
5377 {
5378         struct i802_bss *bss = priv;
5379         struct wpa_driver_nl80211_data *drv = bss->drv;
5380         struct nl_msg *msg;
5381         u8 cmd = NL80211_CMD_NEW_BEACON;
5382         int ret;
5383         int beacon_set;
5384         int ifindex = if_nametoindex(bss->ifname);
5385         int num_suites;
5386         u32 suites[10];
5387         u32 ver;
5388
5389         beacon_set = bss->beacon_set;
5390
5391         msg = nlmsg_alloc();
5392         if (!msg)
5393                 return -ENOMEM;
5394
5395         wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
5396                    beacon_set);
5397         if (beacon_set)
5398                 cmd = NL80211_CMD_SET_BEACON;
5399
5400         nl80211_cmd(drv, msg, 0, cmd);
5401         NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, params->head_len, params->head);
5402         NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, params->tail_len, params->tail);
5403         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
5404         NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, params->beacon_int);
5405         NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, params->dtim_period);
5406         NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
5407                 params->ssid);
5408         if (params->proberesp && params->proberesp_len)
5409                 NLA_PUT(msg, NL80211_ATTR_PROBE_RESP, params->proberesp_len,
5410                         params->proberesp);
5411         switch (params->hide_ssid) {
5412         case NO_SSID_HIDING:
5413                 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
5414                             NL80211_HIDDEN_SSID_NOT_IN_USE);
5415                 break;
5416         case HIDDEN_SSID_ZERO_LEN:
5417                 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
5418                             NL80211_HIDDEN_SSID_ZERO_LEN);
5419                 break;
5420         case HIDDEN_SSID_ZERO_CONTENTS:
5421                 NLA_PUT_U32(msg, NL80211_ATTR_HIDDEN_SSID,
5422                             NL80211_HIDDEN_SSID_ZERO_CONTENTS);
5423                 break;
5424         }
5425         if (params->privacy)
5426                 NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
5427         if ((params->auth_algs & (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) ==
5428             (WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED)) {
5429                 /* Leave out the attribute */
5430         } else if (params->auth_algs & WPA_AUTH_ALG_SHARED)
5431                 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
5432                             NL80211_AUTHTYPE_SHARED_KEY);
5433         else
5434                 NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE,
5435                             NL80211_AUTHTYPE_OPEN_SYSTEM);
5436
5437         ver = 0;
5438         if (params->wpa_version & WPA_PROTO_WPA)
5439                 ver |= NL80211_WPA_VERSION_1;
5440         if (params->wpa_version & WPA_PROTO_RSN)
5441                 ver |= NL80211_WPA_VERSION_2;
5442         if (ver)
5443                 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
5444
5445         num_suites = 0;
5446         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X)
5447                 suites[num_suites++] = WLAN_AKM_SUITE_8021X;
5448         if (params->key_mgmt_suites & WPA_KEY_MGMT_PSK)
5449                 suites[num_suites++] = WLAN_AKM_SUITE_PSK;
5450         if (num_suites) {
5451                 NLA_PUT(msg, NL80211_ATTR_AKM_SUITES,
5452                         num_suites * sizeof(u32), suites);
5453         }
5454
5455         if (params->key_mgmt_suites & WPA_KEY_MGMT_IEEE8021X &&
5456             params->pairwise_ciphers & (WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40))
5457                 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT);
5458
5459         num_suites = 0;
5460         if (params->pairwise_ciphers & WPA_CIPHER_CCMP)
5461                 suites[num_suites++] = WLAN_CIPHER_SUITE_CCMP;
5462         if (params->pairwise_ciphers & WPA_CIPHER_TKIP)
5463                 suites[num_suites++] = WLAN_CIPHER_SUITE_TKIP;
5464         if (params->pairwise_ciphers & WPA_CIPHER_WEP104)
5465                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP104;
5466         if (params->pairwise_ciphers & WPA_CIPHER_WEP40)
5467                 suites[num_suites++] = WLAN_CIPHER_SUITE_WEP40;
5468         if (num_suites) {
5469                 NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
5470                         num_suites * sizeof(u32), suites);
5471         }
5472
5473         switch (params->group_cipher) {
5474         case WPA_CIPHER_CCMP:
5475                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
5476                             WLAN_CIPHER_SUITE_CCMP);
5477                 break;
5478         case WPA_CIPHER_TKIP:
5479                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
5480                             WLAN_CIPHER_SUITE_TKIP);
5481                 break;
5482         case WPA_CIPHER_WEP104:
5483                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
5484                             WLAN_CIPHER_SUITE_WEP104);
5485                 break;
5486         case WPA_CIPHER_WEP40:
5487                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
5488                             WLAN_CIPHER_SUITE_WEP40);
5489                 break;
5490         }
5491
5492         if (params->beacon_ies) {
5493                 NLA_PUT(msg, NL80211_ATTR_IE, wpabuf_len(params->beacon_ies),
5494                         wpabuf_head(params->beacon_ies));
5495         }
5496         if (params->proberesp_ies) {
5497                 NLA_PUT(msg, NL80211_ATTR_IE_PROBE_RESP,
5498                         wpabuf_len(params->proberesp_ies),
5499                         wpabuf_head(params->proberesp_ies));
5500         }
5501         if (params->assocresp_ies) {
5502                 NLA_PUT(msg, NL80211_ATTR_IE_ASSOC_RESP,
5503                         wpabuf_len(params->assocresp_ies),
5504                         wpabuf_head(params->assocresp_ies));
5505         }
5506
5507         if (drv->capa.flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)  {
5508                 NLA_PUT_U16(msg, NL80211_ATTR_INACTIVITY_TIMEOUT,
5509                             params->ap_max_inactivity);
5510         }
5511
5512         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5513         if (ret) {
5514                 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
5515                            ret, strerror(-ret));
5516         } else {
5517                 bss->beacon_set = 1;
5518                 nl80211_set_bss(bss, params->cts_protect, params->preamble,
5519                                 params->short_slot_time, params->ht_opmode,
5520                                 params->isolate, params->basic_rates);
5521         }
5522         return ret;
5523  nla_put_failure:
5524         nlmsg_free(msg);
5525         return -ENOBUFS;
5526 }
5527
5528
5529 static int wpa_driver_nl80211_set_freq(struct i802_bss *bss,
5530                                        int freq, int ht_enabled,
5531                                        int sec_channel_offset)
5532 {
5533         struct wpa_driver_nl80211_data *drv = bss->drv;
5534         struct nl_msg *msg;
5535         int ret;
5536
5537         wpa_printf(MSG_DEBUG, "nl80211: Set freq %d (ht_enabled=%d "
5538                    "sec_channel_offset=%d)",
5539                    freq, ht_enabled, sec_channel_offset);
5540         msg = nlmsg_alloc();
5541         if (!msg)
5542                 return -1;
5543
5544         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
5545
5546         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5547         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
5548         if (ht_enabled) {
5549                 switch (sec_channel_offset) {
5550                 case -1:
5551                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
5552                                     NL80211_CHAN_HT40MINUS);
5553                         break;
5554                 case 1:
5555                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
5556                                     NL80211_CHAN_HT40PLUS);
5557                         break;
5558                 default:
5559                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
5560                                     NL80211_CHAN_HT20);
5561                         break;
5562                 }
5563         }
5564
5565         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5566         msg = NULL;
5567         if (ret == 0) {
5568                 bss->freq = freq;
5569                 return 0;
5570         }
5571         wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
5572                    "%d (%s)", freq, ret, strerror(-ret));
5573 nla_put_failure:
5574         nlmsg_free(msg);
5575         return -1;
5576 }
5577
5578
5579 static u32 sta_flags_nl80211(int flags)
5580 {
5581         u32 f = 0;
5582
5583         if (flags & WPA_STA_AUTHORIZED)
5584                 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
5585         if (flags & WPA_STA_WMM)
5586                 f |= BIT(NL80211_STA_FLAG_WME);
5587         if (flags & WPA_STA_SHORT_PREAMBLE)
5588                 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
5589         if (flags & WPA_STA_MFP)
5590                 f |= BIT(NL80211_STA_FLAG_MFP);
5591         if (flags & WPA_STA_TDLS_PEER)
5592                 f |= BIT(NL80211_STA_FLAG_TDLS_PEER);
5593
5594         return f;
5595 }
5596
5597
5598 static int wpa_driver_nl80211_sta_add(void *priv,
5599                                       struct hostapd_sta_add_params *params)
5600 {
5601         struct i802_bss *bss = priv;
5602         struct wpa_driver_nl80211_data *drv = bss->drv;
5603         struct nl_msg *msg, *wme = NULL;
5604         struct nl80211_sta_flag_update upd;
5605         int ret = -ENOBUFS;
5606
5607         if ((params->flags & WPA_STA_TDLS_PEER) &&
5608             !(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
5609                 return -EOPNOTSUPP;
5610
5611         msg = nlmsg_alloc();
5612         if (!msg)
5613                 return -ENOMEM;
5614
5615         nl80211_cmd(drv, msg, 0, params->set ? NL80211_CMD_SET_STATION :
5616                     NL80211_CMD_NEW_STATION);
5617
5618         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
5619         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
5620         NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
5621                 params->supp_rates);
5622         if (!params->set) {
5623                 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
5624                 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
5625                             params->listen_interval);
5626         }
5627         if (params->ht_capabilities) {
5628                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
5629                         sizeof(*params->ht_capabilities),
5630                         params->ht_capabilities);
5631         }
5632
5633         os_memset(&upd, 0, sizeof(upd));
5634         upd.mask = sta_flags_nl80211(params->flags);
5635         upd.set = upd.mask;
5636         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
5637
5638         if (params->flags & WPA_STA_WMM) {
5639                 wme = nlmsg_alloc();
5640                 if (!wme)
5641                         goto nla_put_failure;
5642
5643                 NLA_PUT_U8(wme, NL80211_STA_WME_UAPSD_QUEUES,
5644                                 params->qosinfo & WMM_QOSINFO_STA_AC_MASK);
5645                 NLA_PUT_U8(wme, NL80211_STA_WME_MAX_SP,
5646                                 (params->qosinfo > WMM_QOSINFO_STA_SP_SHIFT) &
5647                                 WMM_QOSINFO_STA_SP_MASK);
5648                 nla_put_nested(msg, NL80211_ATTR_STA_WME, wme);
5649         }
5650
5651         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5652         msg = NULL;
5653         if (ret)
5654                 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_%s_STATION "
5655                            "result: %d (%s)", params->set ? "SET" : "NEW", ret,
5656                            strerror(-ret));
5657         if (ret == -EEXIST)
5658                 ret = 0;
5659  nla_put_failure:
5660         nlmsg_free(wme);
5661         nlmsg_free(msg);
5662         return ret;
5663 }
5664
5665
5666 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
5667 {
5668         struct i802_bss *bss = priv;
5669         struct wpa_driver_nl80211_data *drv = bss->drv;
5670         struct nl_msg *msg;
5671         int ret;
5672
5673         msg = nlmsg_alloc();
5674         if (!msg)
5675                 return -ENOMEM;
5676
5677         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION);
5678
5679         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
5680                     if_nametoindex(bss->ifname));
5681         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
5682
5683         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5684         if (ret == -ENOENT)
5685                 return 0;
5686         return ret;
5687  nla_put_failure:
5688         nlmsg_free(msg);
5689         return -ENOBUFS;
5690 }
5691
5692
5693 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
5694                                  int ifidx)
5695 {
5696         struct nl_msg *msg;
5697
5698         wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
5699
5700         /* stop listening for EAPOL on this interface */
5701         del_ifidx(drv, ifidx);
5702
5703         msg = nlmsg_alloc();
5704         if (!msg)
5705                 goto nla_put_failure;
5706
5707         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE);
5708         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
5709
5710         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
5711                 return;
5712         msg = NULL;
5713  nla_put_failure:
5714         nlmsg_free(msg);
5715         wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d)", ifidx);
5716 }
5717
5718
5719 static const char * nl80211_iftype_str(enum nl80211_iftype mode)
5720 {
5721         switch (mode) {
5722         case NL80211_IFTYPE_ADHOC:
5723                 return "ADHOC";
5724         case NL80211_IFTYPE_STATION:
5725                 return "STATION";
5726         case NL80211_IFTYPE_AP:
5727                 return "AP";
5728         case NL80211_IFTYPE_MONITOR:
5729                 return "MONITOR";
5730         case NL80211_IFTYPE_P2P_CLIENT:
5731                 return "P2P_CLIENT";
5732         case NL80211_IFTYPE_P2P_GO:
5733                 return "P2P_GO";
5734         default:
5735                 return "unknown";
5736         }
5737 }
5738
5739
5740 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
5741                                      const char *ifname,
5742                                      enum nl80211_iftype iftype,
5743                                      const u8 *addr, int wds)
5744 {
5745         struct nl_msg *msg, *flags = NULL;
5746         int ifidx;
5747         int ret = -ENOBUFS;
5748
5749         wpa_printf(MSG_DEBUG, "nl80211: Create interface iftype %d (%s)",
5750                    iftype, nl80211_iftype_str(iftype));
5751
5752         msg = nlmsg_alloc();
5753         if (!msg)
5754                 return -1;
5755
5756         nl80211_cmd(drv, msg, 0, NL80211_CMD_NEW_INTERFACE);
5757         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
5758         NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
5759         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
5760
5761         if (iftype == NL80211_IFTYPE_MONITOR) {
5762                 int err;
5763
5764                 flags = nlmsg_alloc();
5765                 if (!flags)
5766                         goto nla_put_failure;
5767
5768                 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
5769
5770                 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
5771
5772                 nlmsg_free(flags);
5773
5774                 if (err)
5775                         goto nla_put_failure;
5776         } else if (wds) {
5777                 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
5778         }
5779
5780         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
5781         msg = NULL;
5782         if (ret) {
5783  nla_put_failure:
5784                 nlmsg_free(msg);
5785                 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
5786                            ifname, ret, strerror(-ret));
5787                 return ret;
5788         }
5789
5790         ifidx = if_nametoindex(ifname);
5791         wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
5792                    ifname, ifidx);
5793
5794         if (ifidx <= 0)
5795                 return -1;
5796
5797         /* start listening for EAPOL on this interface */
5798         add_ifidx(drv, ifidx);
5799
5800         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
5801             linux_set_ifhwaddr(drv->global->ioctl_sock, ifname, addr)) {
5802                 nl80211_remove_iface(drv, ifidx);
5803                 return -1;
5804         }
5805
5806         return ifidx;
5807 }
5808
5809
5810 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
5811                                 const char *ifname, enum nl80211_iftype iftype,
5812                                 const u8 *addr, int wds)
5813 {
5814         int ret;
5815
5816         ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
5817
5818         /* if error occurred and interface exists already */
5819         if (ret == -ENFILE && if_nametoindex(ifname)) {
5820                 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
5821
5822                 /* Try to remove the interface that was already there. */
5823                 nl80211_remove_iface(drv, if_nametoindex(ifname));
5824
5825                 /* Try to create the interface again */
5826                 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
5827                                                 wds);
5828         }
5829
5830         if (ret >= 0 && is_p2p_interface(iftype))
5831                 nl80211_disable_11b_rates(drv, ret, 1);
5832
5833         return ret;
5834 }
5835
5836
5837 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
5838 {
5839         struct ieee80211_hdr *hdr;
5840         u16 fc;
5841         union wpa_event_data event;
5842
5843         hdr = (struct ieee80211_hdr *) buf;
5844         fc = le_to_host16(hdr->frame_control);
5845
5846         os_memset(&event, 0, sizeof(event));
5847         event.tx_status.type = WLAN_FC_GET_TYPE(fc);
5848         event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
5849         event.tx_status.dst = hdr->addr1;
5850         event.tx_status.data = buf;
5851         event.tx_status.data_len = len;
5852         event.tx_status.ack = ok;
5853         wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
5854 }
5855
5856
5857 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
5858                              u8 *buf, size_t len)
5859 {
5860         struct ieee80211_hdr *hdr = (void *)buf;
5861         u16 fc;
5862         union wpa_event_data event;
5863
5864         if (len < sizeof(*hdr))
5865                 return;
5866
5867         fc = le_to_host16(hdr->frame_control);
5868
5869         os_memset(&event, 0, sizeof(event));
5870         event.rx_from_unknown.bssid = get_hdr_bssid(hdr, len);
5871         event.rx_from_unknown.addr = hdr->addr2;
5872         event.rx_from_unknown.wds = (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) ==
5873                 (WLAN_FC_FROMDS | WLAN_FC_TODS);
5874         wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
5875 }
5876
5877
5878 static void handle_frame(struct wpa_driver_nl80211_data *drv,
5879                          u8 *buf, size_t len, int datarate, int ssi_signal)
5880 {
5881         struct ieee80211_hdr *hdr;
5882         u16 fc;
5883         union wpa_event_data event;
5884
5885         hdr = (struct ieee80211_hdr *) buf;
5886         fc = le_to_host16(hdr->frame_control);
5887
5888         switch (WLAN_FC_GET_TYPE(fc)) {
5889         case WLAN_FC_TYPE_MGMT:
5890                 os_memset(&event, 0, sizeof(event));
5891                 event.rx_mgmt.frame = buf;
5892                 event.rx_mgmt.frame_len = len;
5893                 event.rx_mgmt.datarate = datarate;
5894                 event.rx_mgmt.ssi_signal = ssi_signal;
5895                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
5896                 break;
5897         case WLAN_FC_TYPE_CTRL:
5898                 /* can only get here with PS-Poll frames */
5899                 wpa_printf(MSG_DEBUG, "CTRL");
5900                 from_unknown_sta(drv, buf, len);
5901                 break;
5902         case WLAN_FC_TYPE_DATA:
5903                 from_unknown_sta(drv, buf, len);
5904                 break;
5905         }
5906 }
5907
5908
5909 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
5910 {
5911         struct wpa_driver_nl80211_data *drv = eloop_ctx;
5912         int len;
5913         unsigned char buf[3000];
5914         struct ieee80211_radiotap_iterator iter;
5915         int ret;
5916         int datarate = 0, ssi_signal = 0;
5917         int injected = 0, failed = 0, rxflags = 0;
5918
5919         len = recv(sock, buf, sizeof(buf), 0);
5920         if (len < 0) {
5921                 perror("recv");
5922                 return;
5923         }
5924
5925         if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
5926                 printf("received invalid radiotap frame\n");
5927                 return;
5928         }
5929
5930         while (1) {
5931                 ret = ieee80211_radiotap_iterator_next(&iter);
5932                 if (ret == -ENOENT)
5933                         break;
5934                 if (ret) {
5935                         printf("received invalid radiotap frame (%d)\n", ret);
5936                         return;
5937                 }
5938                 switch (iter.this_arg_index) {
5939                 case IEEE80211_RADIOTAP_FLAGS:
5940                         if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
5941                                 len -= 4;
5942                         break;
5943                 case IEEE80211_RADIOTAP_RX_FLAGS:
5944                         rxflags = 1;
5945                         break;
5946                 case IEEE80211_RADIOTAP_TX_FLAGS:
5947                         injected = 1;
5948                         failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
5949                                         IEEE80211_RADIOTAP_F_TX_FAIL;
5950                         break;
5951                 case IEEE80211_RADIOTAP_DATA_RETRIES:
5952                         break;
5953                 case IEEE80211_RADIOTAP_CHANNEL:
5954                         /* TODO: convert from freq/flags to channel number */
5955                         break;
5956                 case IEEE80211_RADIOTAP_RATE:
5957                         datarate = *iter.this_arg * 5;
5958                         break;
5959                 case IEEE80211_RADIOTAP_DBM_ANTSIGNAL:
5960                         ssi_signal = (s8) *iter.this_arg;
5961                         break;
5962                 }
5963         }
5964
5965         if (rxflags && injected)
5966                 return;
5967
5968         if (!injected)
5969                 handle_frame(drv, buf + iter.max_length,
5970                              len - iter.max_length, datarate, ssi_signal);
5971         else
5972                 handle_tx_callback(drv->ctx, buf + iter.max_length,
5973                                    len - iter.max_length, !failed);
5974 }
5975
5976
5977 /*
5978  * we post-process the filter code later and rewrite
5979  * this to the offset to the last instruction
5980  */
5981 #define PASS    0xFF
5982 #define FAIL    0xFE
5983
5984 static struct sock_filter msock_filter_insns[] = {
5985         /*
5986          * do a little-endian load of the radiotap length field
5987          */
5988         /* load lower byte into A */
5989         BPF_STMT(BPF_LD  | BPF_B | BPF_ABS, 2),
5990         /* put it into X (== index register) */
5991         BPF_STMT(BPF_MISC| BPF_TAX, 0),
5992         /* load upper byte into A */
5993         BPF_STMT(BPF_LD  | BPF_B | BPF_ABS, 3),
5994         /* left-shift it by 8 */
5995         BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
5996         /* or with X */
5997         BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
5998         /* put result into X */
5999         BPF_STMT(BPF_MISC| BPF_TAX, 0),
6000
6001         /*
6002          * Allow management frames through, this also gives us those
6003          * management frames that we sent ourselves with status
6004          */
6005         /* load the lower byte of the IEEE 802.11 frame control field */
6006         BPF_STMT(BPF_LD  | BPF_B | BPF_IND, 0),
6007         /* mask off frame type and version */
6008         BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
6009         /* accept frame if it's both 0, fall through otherwise */
6010         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
6011
6012         /*
6013          * TODO: add a bit to radiotap RX flags that indicates
6014          * that the sending station is not associated, then
6015          * add a filter here that filters on our DA and that flag
6016          * to allow us to deauth frames to that bad station.
6017          *
6018          * For now allow all To DS data frames through.
6019          */
6020         /* load the IEEE 802.11 frame control field */
6021         BPF_STMT(BPF_LD  | BPF_H | BPF_IND, 0),
6022         /* mask off frame type, version and DS status */
6023         BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0F03),
6024         /* accept frame if version 0, type 2 and To DS, fall through otherwise
6025          */
6026         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0801, PASS, 0),
6027
6028 #if 0
6029         /*
6030          * drop non-data frames
6031          */
6032         /* load the lower byte of the frame control field */
6033         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
6034         /* mask off QoS bit */
6035         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x0c),
6036         /* drop non-data frames */
6037         BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 8, 0, FAIL),
6038 #endif
6039         /* load the upper byte of the frame control field */
6040         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 1),
6041         /* mask off toDS/fromDS */
6042         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x03),
6043         /* accept WDS frames */
6044         BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 3, PASS, 0),
6045
6046         /*
6047          * add header length to index
6048          */
6049         /* load the lower byte of the frame control field */
6050         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
6051         /* mask off QoS bit */
6052         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x80),
6053         /* right shift it by 6 to give 0 or 2 */
6054         BPF_STMT(BPF_ALU  | BPF_RSH | BPF_K, 6),
6055         /* add data frame header length */
6056         BPF_STMT(BPF_ALU  | BPF_ADD | BPF_K, 24),
6057         /* add index, was start of 802.11 header */
6058         BPF_STMT(BPF_ALU  | BPF_ADD | BPF_X, 0),
6059         /* move to index, now start of LL header */
6060         BPF_STMT(BPF_MISC | BPF_TAX, 0),
6061
6062         /*
6063          * Accept empty data frames, we use those for
6064          * polling activity.
6065          */
6066         BPF_STMT(BPF_LD  | BPF_W | BPF_LEN, 0),
6067         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
6068
6069         /*
6070          * Accept EAPOL frames
6071          */
6072         BPF_STMT(BPF_LD  | BPF_W | BPF_IND, 0),
6073         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
6074         BPF_STMT(BPF_LD  | BPF_W | BPF_IND, 4),
6075         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
6076
6077         /* keep these last two statements or change the code below */
6078         /* return 0 == "DROP" */
6079         BPF_STMT(BPF_RET | BPF_K, 0),
6080         /* return ~0 == "keep all" */
6081         BPF_STMT(BPF_RET | BPF_K, ~0),
6082 };
6083
6084 static struct sock_fprog msock_filter = {
6085         .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
6086         .filter = msock_filter_insns,
6087 };
6088
6089
6090 static int add_monitor_filter(int s)
6091 {
6092         int idx;
6093
6094         /* rewrite all PASS/FAIL jump offsets */
6095         for (idx = 0; idx < msock_filter.len; idx++) {
6096                 struct sock_filter *insn = &msock_filter_insns[idx];
6097
6098                 if (BPF_CLASS(insn->code) == BPF_JMP) {
6099                         if (insn->code == (BPF_JMP|BPF_JA)) {
6100                                 if (insn->k == PASS)
6101                                         insn->k = msock_filter.len - idx - 2;
6102                                 else if (insn->k == FAIL)
6103                                         insn->k = msock_filter.len - idx - 3;
6104                         }
6105
6106                         if (insn->jt == PASS)
6107                                 insn->jt = msock_filter.len - idx - 2;
6108                         else if (insn->jt == FAIL)
6109                                 insn->jt = msock_filter.len - idx - 3;
6110
6111                         if (insn->jf == PASS)
6112                                 insn->jf = msock_filter.len - idx - 2;
6113                         else if (insn->jf == FAIL)
6114                                 insn->jf = msock_filter.len - idx - 3;
6115                 }
6116         }
6117
6118         if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
6119                        &msock_filter, sizeof(msock_filter))) {
6120                 perror("SO_ATTACH_FILTER");
6121                 return -1;
6122         }
6123
6124         return 0;
6125 }
6126
6127
6128 static void nl80211_remove_monitor_interface(
6129         struct wpa_driver_nl80211_data *drv)
6130 {
6131         drv->monitor_refcount--;
6132         if (drv->monitor_refcount > 0)
6133                 return;
6134
6135         if (drv->monitor_ifidx >= 0) {
6136                 nl80211_remove_iface(drv, drv->monitor_ifidx);
6137                 drv->monitor_ifidx = -1;
6138         }
6139         if (drv->monitor_sock >= 0) {
6140                 eloop_unregister_read_sock(drv->monitor_sock);
6141                 close(drv->monitor_sock);
6142                 drv->monitor_sock = -1;
6143         }
6144 }
6145
6146
6147 static int
6148 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
6149 {
6150         char buf[IFNAMSIZ];
6151         struct sockaddr_ll ll;
6152         int optval;
6153         socklen_t optlen;
6154
6155         if (drv->monitor_ifidx >= 0) {
6156                 drv->monitor_refcount++;
6157                 return 0;
6158         }
6159
6160         if (os_strncmp(drv->first_bss.ifname, "p2p-", 4) == 0) {
6161                 /*
6162                  * P2P interface name is of the format p2p-%s-%d. For monitor
6163                  * interface name corresponding to P2P GO, replace "p2p-" with
6164                  * "mon-" to retain the same interface name length and to
6165                  * indicate that it is a monitor interface.
6166                  */
6167                 snprintf(buf, IFNAMSIZ, "mon-%s", drv->first_bss.ifname + 4);
6168         } else {
6169                 /* Non-P2P interface with AP functionality. */
6170                 snprintf(buf, IFNAMSIZ, "mon.%s", drv->first_bss.ifname);
6171         }
6172
6173         buf[IFNAMSIZ - 1] = '\0';
6174
6175         drv->monitor_ifidx =
6176                 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
6177                                      0);
6178
6179         if (drv->monitor_ifidx == -EOPNOTSUPP) {
6180                 /*
6181                  * This is backward compatibility for a few versions of
6182                  * the kernel only that didn't advertise the right
6183                  * attributes for the only driver that then supported
6184                  * AP mode w/o monitor -- ath6kl.
6185                  */
6186                 wpa_printf(MSG_DEBUG, "nl80211: Driver does not support "
6187                            "monitor interface type - try to run without it");
6188                 drv->device_ap_sme = 1;
6189         }
6190
6191         if (drv->monitor_ifidx < 0)
6192                 return -1;
6193
6194         if (linux_set_iface_flags(drv->global->ioctl_sock, buf, 1))
6195                 goto error;
6196
6197         memset(&ll, 0, sizeof(ll));
6198         ll.sll_family = AF_PACKET;
6199         ll.sll_ifindex = drv->monitor_ifidx;
6200         drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
6201         if (drv->monitor_sock < 0) {
6202                 perror("socket[PF_PACKET,SOCK_RAW]");
6203                 goto error;
6204         }
6205
6206         if (add_monitor_filter(drv->monitor_sock)) {
6207                 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
6208                            "interface; do filtering in user space");
6209                 /* This works, but will cost in performance. */
6210         }
6211
6212         if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
6213                 perror("monitor socket bind");
6214                 goto error;
6215         }
6216
6217         optlen = sizeof(optval);
6218         optval = 20;
6219         if (setsockopt
6220             (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
6221                 perror("Failed to set socket priority");
6222                 goto error;
6223         }
6224
6225         if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
6226                                      drv, NULL)) {
6227                 printf("Could not register monitor read socket\n");
6228                 goto error;
6229         }
6230
6231         return 0;
6232  error:
6233         nl80211_remove_monitor_interface(drv);
6234         return -1;
6235 }
6236
6237
6238 static int nl80211_setup_ap(struct i802_bss *bss)
6239 {
6240         struct wpa_driver_nl80211_data *drv = bss->drv;
6241
6242         wpa_printf(MSG_DEBUG, "nl80211: Setup AP - device_ap_sme=%d "
6243                    "use_monitor=%d", drv->device_ap_sme, drv->use_monitor);
6244
6245         /*
6246          * Disable Probe Request reporting unless we need it in this way for
6247          * devices that include the AP SME, in the other case (unless using
6248          * monitor iface) we'll get it through the nl_mgmt socket instead.
6249          */
6250         if (!drv->device_ap_sme)
6251                 wpa_driver_nl80211_probe_req_report(bss, 0);
6252
6253         if (!drv->device_ap_sme && !drv->use_monitor)
6254                 if (nl80211_mgmt_subscribe_ap(bss))
6255                         return -1;
6256
6257         if (drv->device_ap_sme && !drv->use_monitor)
6258                 if (nl80211_mgmt_subscribe_ap_dev_sme(bss))
6259                         return -1;
6260
6261         if (!drv->device_ap_sme && drv->use_monitor &&
6262             nl80211_create_monitor_interface(drv) &&
6263             !drv->device_ap_sme)
6264                 return -1;
6265
6266 #ifdef ANDROID_P2P
6267         if (drv->device_ap_sme && drv->use_monitor)
6268                 if (nl80211_mgmt_subscribe_ap_dev_sme(bss))
6269                         return -1;
6270
6271         if (drv->use_monitor &&
6272             nl80211_create_monitor_interface(drv))
6273                 return -1;
6274 #endif
6275
6276         if (drv->device_ap_sme &&
6277             wpa_driver_nl80211_probe_req_report(bss, 1) < 0) {
6278                 wpa_printf(MSG_DEBUG, "nl80211: Failed to enable "
6279                            "Probe Request frame reporting in AP mode");
6280                 /* Try to survive without this */
6281         }
6282
6283         return 0;
6284 }
6285
6286
6287 static void nl80211_teardown_ap(struct i802_bss *bss)
6288 {
6289         struct wpa_driver_nl80211_data *drv = bss->drv;
6290
6291         if (drv->device_ap_sme) {
6292                 wpa_driver_nl80211_probe_req_report(bss, 0);
6293                 if (!drv->use_monitor)
6294                         nl80211_mgmt_unsubscribe(bss, "AP teardown (dev SME)");
6295         } else if (drv->use_monitor)
6296                 nl80211_remove_monitor_interface(drv);
6297         else
6298                 nl80211_mgmt_unsubscribe(bss, "AP teardown");
6299
6300         bss->beacon_set = 0;
6301 }
6302
6303
6304 static int nl80211_send_eapol_data(struct i802_bss *bss,
6305                                    const u8 *addr, const u8 *data,
6306                                    size_t data_len)
6307 {
6308         struct sockaddr_ll ll;
6309         int ret;
6310
6311         if (bss->drv->eapol_tx_sock < 0) {
6312                 wpa_printf(MSG_DEBUG, "nl80211: No socket to send EAPOL");
6313                 return -1;
6314         }
6315
6316         os_memset(&ll, 0, sizeof(ll));
6317         ll.sll_family = AF_PACKET;
6318         ll.sll_ifindex = bss->ifindex;
6319         ll.sll_protocol = htons(ETH_P_PAE);
6320         ll.sll_halen = ETH_ALEN;
6321         os_memcpy(ll.sll_addr, addr, ETH_ALEN);
6322         ret = sendto(bss->drv->eapol_tx_sock, data, data_len, 0,
6323                      (struct sockaddr *) &ll, sizeof(ll));
6324         if (ret < 0)
6325                 wpa_printf(MSG_ERROR, "nl80211: EAPOL TX: %s",
6326                            strerror(errno));
6327
6328         return ret;
6329 }
6330
6331
6332 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
6333
6334 static int wpa_driver_nl80211_hapd_send_eapol(
6335         void *priv, const u8 *addr, const u8 *data,
6336         size_t data_len, int encrypt, const u8 *own_addr, u32 flags)
6337 {
6338         struct i802_bss *bss = priv;
6339         struct wpa_driver_nl80211_data *drv = bss->drv;
6340         struct ieee80211_hdr *hdr;
6341         size_t len;
6342         u8 *pos;
6343         int res;
6344         int qos = flags & WPA_STA_WMM;
6345 #ifndef ANDROID_P2P
6346         if (drv->device_ap_sme || !drv->use_monitor)
6347 #else
6348         if (drv->device_ap_sme && !drv->use_monitor)
6349 #endif
6350                 return nl80211_send_eapol_data(bss, addr, data, data_len);
6351
6352         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
6353                 data_len;
6354         hdr = os_zalloc(len);
6355         if (hdr == NULL) {
6356                 printf("malloc() failed for i802_send_data(len=%lu)\n",
6357                        (unsigned long) len);
6358                 return -1;
6359         }
6360
6361         hdr->frame_control =
6362                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
6363         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
6364         if (encrypt)
6365                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
6366         if (qos) {
6367                 hdr->frame_control |=
6368                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
6369         }
6370
6371         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
6372         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
6373         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
6374         pos = (u8 *) (hdr + 1);
6375
6376         if (qos) {
6377                 /* add an empty QoS header if needed */
6378                 pos[0] = 0;
6379                 pos[1] = 0;
6380                 pos += 2;
6381         }
6382
6383         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
6384         pos += sizeof(rfc1042_header);
6385         WPA_PUT_BE16(pos, ETH_P_PAE);
6386         pos += 2;
6387         memcpy(pos, data, data_len);
6388
6389         res = wpa_driver_nl80211_send_frame(bss, (u8 *) hdr, len, encrypt, 0,
6390                                             0, 0, 0, 0);
6391         if (res < 0) {
6392                 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
6393                            "failed: %d (%s)",
6394                            (unsigned long) len, errno, strerror(errno));
6395         }
6396         os_free(hdr);
6397
6398         return res;
6399 }
6400
6401
6402 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
6403                                             int total_flags,
6404                                             int flags_or, int flags_and)
6405 {
6406         struct i802_bss *bss = priv;
6407         struct wpa_driver_nl80211_data *drv = bss->drv;
6408         struct nl_msg *msg, *flags = NULL;
6409         struct nl80211_sta_flag_update upd;
6410
6411         msg = nlmsg_alloc();
6412         if (!msg)
6413                 return -ENOMEM;
6414
6415         flags = nlmsg_alloc();
6416         if (!flags) {
6417                 nlmsg_free(msg);
6418                 return -ENOMEM;
6419         }
6420
6421         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
6422
6423         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
6424                     if_nametoindex(bss->ifname));
6425         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
6426
6427         /*
6428          * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
6429          * can be removed eventually.
6430          */
6431         if (total_flags & WPA_STA_AUTHORIZED)
6432                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
6433
6434         if (total_flags & WPA_STA_WMM)
6435                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
6436
6437         if (total_flags & WPA_STA_SHORT_PREAMBLE)
6438                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
6439
6440         if (total_flags & WPA_STA_MFP)
6441                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
6442
6443         if (total_flags & WPA_STA_TDLS_PEER)
6444                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_TDLS_PEER);
6445
6446         if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
6447                 goto nla_put_failure;
6448
6449         os_memset(&upd, 0, sizeof(upd));
6450         upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
6451         upd.set = sta_flags_nl80211(flags_or);
6452         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
6453
6454         nlmsg_free(flags);
6455
6456         return send_and_recv_msgs(drv, msg, NULL, NULL);
6457  nla_put_failure:
6458         nlmsg_free(msg);
6459         nlmsg_free(flags);
6460         return -ENOBUFS;
6461 }
6462
6463
6464 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
6465                                  struct wpa_driver_associate_params *params)
6466 {
6467         enum nl80211_iftype nlmode;
6468
6469         if (params->p2p) {
6470                 wpa_printf(MSG_DEBUG, "nl80211: Setup AP operations for P2P "
6471                            "group (GO)");
6472                 nlmode = NL80211_IFTYPE_P2P_GO;
6473         } else
6474                 nlmode = NL80211_IFTYPE_AP;
6475
6476         if (wpa_driver_nl80211_set_mode(&drv->first_bss, nlmode) ||
6477             wpa_driver_nl80211_set_freq(&drv->first_bss, params->freq, 0, 0)) {
6478                 nl80211_remove_monitor_interface(drv);
6479                 return -1;
6480         }
6481
6482         return 0;
6483 }
6484
6485
6486 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
6487 {
6488         struct nl_msg *msg;
6489         int ret = -1;
6490
6491         msg = nlmsg_alloc();
6492         if (!msg)
6493                 return -1;
6494
6495         nl80211_cmd(drv, msg, 0, NL80211_CMD_LEAVE_IBSS);
6496         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6497         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6498         msg = NULL;
6499         if (ret) {
6500                 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
6501                            "(%s)", ret, strerror(-ret));
6502                 goto nla_put_failure;
6503         }
6504
6505         ret = 0;
6506         wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
6507
6508 nla_put_failure:
6509         nlmsg_free(msg);
6510         return ret;
6511 }
6512
6513
6514 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
6515                                    struct wpa_driver_associate_params *params)
6516 {
6517         struct nl_msg *msg;
6518         int ret = -1;
6519         int count = 0;
6520
6521         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
6522
6523         if (wpa_driver_nl80211_set_mode(&drv->first_bss,
6524                                         NL80211_IFTYPE_ADHOC)) {
6525                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
6526                            "IBSS mode");
6527                 return -1;
6528         }
6529
6530 retry:
6531         msg = nlmsg_alloc();
6532         if (!msg)
6533                 return -1;
6534
6535         nl80211_cmd(drv, msg, 0, NL80211_CMD_JOIN_IBSS);
6536         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6537
6538         if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
6539                 goto nla_put_failure;
6540
6541         wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
6542                           params->ssid, params->ssid_len);
6543         NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
6544                 params->ssid);
6545         os_memcpy(drv->ssid, params->ssid, params->ssid_len);
6546         drv->ssid_len = params->ssid_len;
6547
6548         wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
6549         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
6550
6551         ret = nl80211_set_conn_keys(params, msg);
6552         if (ret)
6553                 goto nla_put_failure;
6554
6555         if (params->bssid && params->fixed_bssid) {
6556                 wpa_printf(MSG_DEBUG, "  * BSSID=" MACSTR,
6557                            MAC2STR(params->bssid));
6558                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
6559         }
6560
6561         if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
6562             params->key_mgmt_suite == KEY_MGMT_PSK ||
6563             params->key_mgmt_suite == KEY_MGMT_802_1X_SHA256 ||
6564             params->key_mgmt_suite == KEY_MGMT_PSK_SHA256) {
6565                 wpa_printf(MSG_DEBUG, "  * control port");
6566                 NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
6567         }
6568
6569         if (params->wpa_ie) {
6570                 wpa_hexdump(MSG_DEBUG,
6571                             "  * Extra IEs for Beacon/Probe Response frames",
6572                             params->wpa_ie, params->wpa_ie_len);
6573                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
6574                         params->wpa_ie);
6575         }
6576
6577         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6578         msg = NULL;
6579         if (ret) {
6580                 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
6581                            ret, strerror(-ret));
6582                 count++;
6583                 if (ret == -EALREADY && count == 1) {
6584                         wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
6585                                    "forced leave");
6586                         nl80211_leave_ibss(drv);
6587                         nlmsg_free(msg);
6588                         goto retry;
6589                 }
6590
6591                 goto nla_put_failure;
6592         }
6593         ret = 0;
6594         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
6595
6596 nla_put_failure:
6597         nlmsg_free(msg);
6598         return ret;
6599 }
6600
6601
6602 static unsigned int nl80211_get_assoc_bssid(struct wpa_driver_nl80211_data *drv,
6603                                             u8 *bssid)
6604 {
6605         struct nl_msg *msg;
6606         int ret;
6607         struct nl80211_bss_info_arg arg;
6608
6609         os_memset(&arg, 0, sizeof(arg));
6610         msg = nlmsg_alloc();
6611         if (!msg)
6612                 goto nla_put_failure;
6613
6614         nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN);
6615         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6616
6617         arg.drv = drv;
6618         ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg);
6619         msg = NULL;
6620         if (ret == 0) {
6621                 if (is_zero_ether_addr(arg.assoc_bssid))
6622                         return -ENOTCONN;
6623                 os_memcpy(bssid, arg.assoc_bssid, ETH_ALEN);
6624                 return 0;
6625         }
6626         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
6627                    "(%s)", ret, strerror(-ret));
6628 nla_put_failure:
6629         nlmsg_free(msg);
6630         return drv->assoc_freq;
6631 }
6632
6633
6634 static int nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
6635                               const u8 *bssid)
6636 {
6637         u8 addr[ETH_ALEN];
6638
6639         if (bssid == NULL) {
6640                 int res = nl80211_get_assoc_bssid(drv, addr);
6641                 if (res)
6642                         return res;
6643                 bssid = addr;
6644         }
6645
6646         return wpa_driver_nl80211_disconnect(drv, bssid,
6647                                              WLAN_REASON_PREV_AUTH_NOT_VALID);
6648 }
6649
6650
6651 static int wpa_driver_nl80211_connect(
6652         struct wpa_driver_nl80211_data *drv,
6653         struct wpa_driver_associate_params *params)
6654 {
6655         struct nl_msg *msg;
6656         enum nl80211_auth_type type;
6657         int ret = 0;
6658         int algs;
6659
6660         msg = nlmsg_alloc();
6661         if (!msg)
6662                 return -1;
6663
6664         wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
6665         nl80211_cmd(drv, msg, 0, NL80211_CMD_CONNECT);
6666
6667         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6668         if (params->bssid) {
6669                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
6670                            MAC2STR(params->bssid));
6671                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
6672         }
6673         if (params->freq) {
6674                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
6675                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
6676         }
6677         if (params->bg_scan_period >= 0) {
6678                 wpa_printf(MSG_DEBUG, "  * bg scan period=%d",
6679                            params->bg_scan_period);
6680                 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD,
6681                             params->bg_scan_period);
6682         }
6683         if (params->ssid) {
6684                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
6685                                   params->ssid, params->ssid_len);
6686                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
6687                         params->ssid);
6688                 if (params->ssid_len > sizeof(drv->ssid))
6689                         goto nla_put_failure;
6690                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
6691                 drv->ssid_len = params->ssid_len;
6692         }
6693         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
6694         if (params->wpa_ie)
6695                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
6696                         params->wpa_ie);
6697
6698         algs = 0;
6699         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
6700                 algs++;
6701         if (params->auth_alg & WPA_AUTH_ALG_SHARED)
6702                 algs++;
6703         if (params->auth_alg & WPA_AUTH_ALG_LEAP)
6704                 algs++;
6705         if (algs > 1) {
6706                 wpa_printf(MSG_DEBUG, "  * Leave out Auth Type for automatic "
6707                            "selection");
6708                 goto skip_auth_type;
6709         }
6710
6711         if (params->auth_alg & WPA_AUTH_ALG_OPEN)
6712                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
6713         else if (params->auth_alg & WPA_AUTH_ALG_SHARED)
6714                 type = NL80211_AUTHTYPE_SHARED_KEY;
6715         else if (params->auth_alg & WPA_AUTH_ALG_LEAP)
6716                 type = NL80211_AUTHTYPE_NETWORK_EAP;
6717         else if (params->auth_alg & WPA_AUTH_ALG_FT)
6718                 type = NL80211_AUTHTYPE_FT;
6719         else
6720                 goto nla_put_failure;
6721
6722         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
6723         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
6724
6725 skip_auth_type:
6726         if (params->wpa_proto) {
6727                 enum nl80211_wpa_versions ver = 0;
6728
6729                 if (params->wpa_proto & WPA_PROTO_WPA)
6730                         ver |= NL80211_WPA_VERSION_1;
6731                 if (params->wpa_proto & WPA_PROTO_RSN)
6732                         ver |= NL80211_WPA_VERSION_2;
6733
6734                 wpa_printf(MSG_DEBUG, "  * WPA Versions 0x%x", ver);
6735                 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
6736         }
6737
6738         if (params->pairwise_suite != CIPHER_NONE) {
6739                 int cipher;
6740
6741                 switch (params->pairwise_suite) {
6742                 case CIPHER_WEP40:
6743                         cipher = WLAN_CIPHER_SUITE_WEP40;
6744                         break;
6745                 case CIPHER_WEP104:
6746                         cipher = WLAN_CIPHER_SUITE_WEP104;
6747                         break;
6748                 case CIPHER_CCMP:
6749                         cipher = WLAN_CIPHER_SUITE_CCMP;
6750                         break;
6751                 case CIPHER_TKIP:
6752                 default:
6753                         cipher = WLAN_CIPHER_SUITE_TKIP;
6754                         break;
6755                 }
6756                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
6757         }
6758
6759         if (params->group_suite != CIPHER_NONE) {
6760                 int cipher;
6761
6762                 switch (params->group_suite) {
6763                 case CIPHER_WEP40:
6764                         cipher = WLAN_CIPHER_SUITE_WEP40;
6765                         break;
6766                 case CIPHER_WEP104:
6767                         cipher = WLAN_CIPHER_SUITE_WEP104;
6768                         break;
6769                 case CIPHER_CCMP:
6770                         cipher = WLAN_CIPHER_SUITE_CCMP;
6771                         break;
6772                 case CIPHER_TKIP:
6773                 default:
6774                         cipher = WLAN_CIPHER_SUITE_TKIP;
6775                         break;
6776                 }
6777                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
6778         }
6779
6780         if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
6781             params->key_mgmt_suite == KEY_MGMT_PSK) {
6782                 int mgmt = WLAN_AKM_SUITE_PSK;
6783
6784                 switch (params->key_mgmt_suite) {
6785                 case KEY_MGMT_802_1X:
6786                         mgmt = WLAN_AKM_SUITE_8021X;
6787                         break;
6788                 case KEY_MGMT_PSK:
6789                 default:
6790                         mgmt = WLAN_AKM_SUITE_PSK;
6791                         break;
6792                 }
6793                 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
6794         }
6795
6796         if (params->disable_ht)
6797                 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT);
6798
6799         if (params->htcaps && params->htcaps_mask) {
6800                 int sz = sizeof(struct ieee80211_ht_capabilities);
6801                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps);
6802                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz,
6803                         params->htcaps_mask);
6804         }
6805
6806         ret = nl80211_set_conn_keys(params, msg);
6807         if (ret)
6808                 goto nla_put_failure;
6809
6810         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6811         msg = NULL;
6812         if (ret) {
6813                 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
6814                            "(%s)", ret, strerror(-ret));
6815                 /*
6816                  * cfg80211 does not currently accept new connection if we are
6817                  * already connected. As a workaround, force disconnection and
6818                  * try again once the driver indicates it completed
6819                  * disconnection.
6820                  */
6821                 if (ret == -EALREADY)
6822                         nl80211_disconnect(drv, params->bssid);
6823                 goto nla_put_failure;
6824         }
6825         ret = 0;
6826         wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
6827
6828 nla_put_failure:
6829         nlmsg_free(msg);
6830         return ret;
6831
6832 }
6833
6834
6835 static int wpa_driver_nl80211_associate(
6836         void *priv, struct wpa_driver_associate_params *params)
6837 {
6838         struct i802_bss *bss = priv;
6839         struct wpa_driver_nl80211_data *drv = bss->drv;
6840         int ret = -1;
6841         struct nl_msg *msg;
6842
6843         if (params->mode == IEEE80211_MODE_AP)
6844                 return wpa_driver_nl80211_ap(drv, params);
6845
6846         if (params->mode == IEEE80211_MODE_IBSS)
6847                 return wpa_driver_nl80211_ibss(drv, params);
6848
6849         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
6850                 enum nl80211_iftype nlmode = params->p2p ?
6851                         NL80211_IFTYPE_P2P_CLIENT : NL80211_IFTYPE_STATION;
6852
6853                 if (wpa_driver_nl80211_set_mode(priv, nlmode) < 0)
6854                         return -1;
6855                 return wpa_driver_nl80211_connect(drv, params);
6856         }
6857
6858         drv->associated = 0;
6859
6860         msg = nlmsg_alloc();
6861         if (!msg)
6862                 return -1;
6863
6864         wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
6865                    drv->ifindex);
6866         nl80211_cmd(drv, msg, 0, NL80211_CMD_ASSOCIATE);
6867
6868         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
6869         if (params->bssid) {
6870                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
6871                            MAC2STR(params->bssid));
6872                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
6873         }
6874         if (params->freq) {
6875                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
6876                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
6877                 drv->assoc_freq = params->freq;
6878         } else
6879                 drv->assoc_freq = 0;
6880         if (params->bg_scan_period >= 0) {
6881                 wpa_printf(MSG_DEBUG, "  * bg scan period=%d",
6882                            params->bg_scan_period);
6883                 NLA_PUT_U16(msg, NL80211_ATTR_BG_SCAN_PERIOD,
6884                             params->bg_scan_period);
6885         }
6886         if (params->ssid) {
6887                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
6888                                   params->ssid, params->ssid_len);
6889                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
6890                         params->ssid);
6891                 if (params->ssid_len > sizeof(drv->ssid))
6892                         goto nla_put_failure;
6893                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
6894                 drv->ssid_len = params->ssid_len;
6895         }
6896         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
6897         if (params->wpa_ie)
6898                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
6899                         params->wpa_ie);
6900
6901         if (params->pairwise_suite != CIPHER_NONE) {
6902                 int cipher;
6903
6904                 switch (params->pairwise_suite) {
6905                 case CIPHER_WEP40:
6906                         cipher = WLAN_CIPHER_SUITE_WEP40;
6907                         break;
6908                 case CIPHER_WEP104:
6909                         cipher = WLAN_CIPHER_SUITE_WEP104;
6910                         break;
6911                 case CIPHER_CCMP:
6912                         cipher = WLAN_CIPHER_SUITE_CCMP;
6913                         break;
6914                 case CIPHER_TKIP:
6915                 default:
6916                         cipher = WLAN_CIPHER_SUITE_TKIP;
6917                         break;
6918                 }
6919                 wpa_printf(MSG_DEBUG, "  * pairwise=0x%x", cipher);
6920                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
6921         }
6922
6923         if (params->group_suite != CIPHER_NONE) {
6924                 int cipher;
6925
6926                 switch (params->group_suite) {
6927                 case CIPHER_WEP40:
6928                         cipher = WLAN_CIPHER_SUITE_WEP40;
6929                         break;
6930                 case CIPHER_WEP104:
6931                         cipher = WLAN_CIPHER_SUITE_WEP104;
6932                         break;
6933                 case CIPHER_CCMP:
6934                         cipher = WLAN_CIPHER_SUITE_CCMP;
6935                         break;
6936                 case CIPHER_TKIP:
6937                 default:
6938                         cipher = WLAN_CIPHER_SUITE_TKIP;
6939                         break;
6940                 }
6941                 wpa_printf(MSG_DEBUG, "  * group=0x%x", cipher);
6942                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
6943         }
6944
6945 #ifdef CONFIG_IEEE80211W
6946         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
6947                 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
6948 #endif /* CONFIG_IEEE80211W */
6949
6950         NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
6951
6952         if (params->prev_bssid) {
6953                 wpa_printf(MSG_DEBUG, "  * prev_bssid=" MACSTR,
6954                            MAC2STR(params->prev_bssid));
6955                 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
6956                         params->prev_bssid);
6957         }
6958
6959         if (params->disable_ht)
6960                 NLA_PUT_FLAG(msg, NL80211_ATTR_DISABLE_HT);
6961
6962         if (params->htcaps && params->htcaps_mask) {
6963                 int sz = sizeof(struct ieee80211_ht_capabilities);
6964                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY, sz, params->htcaps);
6965                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY_MASK, sz,
6966                         params->htcaps_mask);
6967         }
6968
6969         if (params->p2p)
6970                 wpa_printf(MSG_DEBUG, "  * P2P group");
6971
6972         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
6973         msg = NULL;
6974         if (ret) {
6975                 wpa_dbg(drv->ctx, MSG_DEBUG,
6976                         "nl80211: MLME command failed (assoc): ret=%d (%s)",
6977                         ret, strerror(-ret));
6978                 nl80211_dump_scan(drv);
6979                 goto nla_put_failure;
6980         }
6981         ret = 0;
6982         wpa_printf(MSG_DEBUG, "nl80211: Association request send "
6983                    "successfully");
6984
6985 nla_put_failure:
6986         nlmsg_free(msg);
6987         return ret;
6988 }
6989
6990
6991 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
6992                             int ifindex, enum nl80211_iftype mode)
6993 {
6994         struct nl_msg *msg;
6995         int ret = -ENOBUFS;
6996
6997         wpa_printf(MSG_DEBUG, "nl80211: Set mode ifindex %d iftype %d (%s)",
6998                    ifindex, mode, nl80211_iftype_str(mode));
6999
7000         msg = nlmsg_alloc();
7001         if (!msg)
7002                 return -ENOMEM;
7003
7004         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_INTERFACE);
7005         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
7006         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
7007
7008         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7009         msg = NULL;
7010         if (!ret)
7011                 return 0;
7012 nla_put_failure:
7013         nlmsg_free(msg);
7014         wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
7015                    " %d (%s)", ifindex, mode, ret, strerror(-ret));
7016         return ret;
7017 }
7018
7019
7020 static int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
7021                                        enum nl80211_iftype nlmode)
7022 {
7023         struct wpa_driver_nl80211_data *drv = bss->drv;
7024         int ret = -1;
7025         int i;
7026         int was_ap = is_ap_interface(drv->nlmode);
7027         int res;
7028
7029         res = nl80211_set_mode(drv, drv->ifindex, nlmode);
7030         if (res == 0) {
7031                 drv->nlmode = nlmode;
7032                 ret = 0;
7033                 goto done;
7034         }
7035
7036         if (res == -ENODEV)
7037                 return -1;
7038
7039         if (nlmode == drv->nlmode) {
7040                 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
7041                            "requested mode - ignore error");
7042                 ret = 0;
7043                 goto done; /* Already in the requested mode */
7044         }
7045
7046         /* mac80211 doesn't allow mode changes while the device is up, so
7047          * take the device down, try to set the mode again, and bring the
7048          * device back up.
7049          */
7050         wpa_printf(MSG_DEBUG, "nl80211: Try mode change after setting "
7051                    "interface down");
7052         for (i = 0; i < 10; i++) {
7053                 res = linux_set_iface_flags(drv->global->ioctl_sock,
7054                                             bss->ifname, 0);
7055                 if (res == -EACCES || res == -ENODEV)
7056                         break;
7057                 if (res == 0) {
7058                         /* Try to set the mode again while the interface is
7059                          * down */
7060                         ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
7061                         if (ret == -EACCES)
7062                                 break;
7063                         res = linux_set_iface_flags(drv->global->ioctl_sock,
7064                                                     bss->ifname, 1);
7065                         if (res && !ret)
7066                                 ret = -1;
7067                         else if (ret != -EBUSY)
7068                                 break;
7069                 } else
7070                         wpa_printf(MSG_DEBUG, "nl80211: Failed to set "
7071                                    "interface down");
7072                 os_sleep(0, 100000);
7073         }
7074
7075         if (!ret) {
7076                 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
7077                            "interface is down");
7078                 drv->nlmode = nlmode;
7079                 drv->ignore_if_down_event = 1;
7080         }
7081
7082 done:
7083         if (ret) {
7084                 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
7085                            "from %d failed", nlmode, drv->nlmode);
7086                 return ret;
7087         }
7088
7089         if (is_ap_interface(nlmode)) {
7090                 nl80211_mgmt_unsubscribe(bss, "start AP");
7091                 /* Setup additional AP mode functionality if needed */
7092                 if (nl80211_setup_ap(bss))
7093                         return -1;
7094         } else if (was_ap) {
7095                 /* Remove additional AP mode functionality */
7096                 nl80211_teardown_ap(bss);
7097         } else {
7098                 nl80211_mgmt_unsubscribe(bss, "mode change");
7099         }
7100
7101         if (!bss->in_deinit && !is_ap_interface(nlmode) &&
7102             nl80211_mgmt_subscribe_non_ap(bss) < 0)
7103                 wpa_printf(MSG_DEBUG, "nl80211: Failed to register Action "
7104                            "frame processing - ignore for now");
7105
7106         return 0;
7107 }
7108
7109
7110 static int wpa_driver_nl80211_get_capa(void *priv,
7111                                        struct wpa_driver_capa *capa)
7112 {
7113         struct i802_bss *bss = priv;
7114         struct wpa_driver_nl80211_data *drv = bss->drv;
7115         if (!drv->has_capability)
7116                 return -1;
7117         os_memcpy(capa, &drv->capa, sizeof(*capa));
7118         return 0;
7119 }
7120
7121
7122 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
7123 {
7124         struct i802_bss *bss = priv;
7125         struct wpa_driver_nl80211_data *drv = bss->drv;
7126
7127         wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
7128                    __func__, drv->operstate, state, state ? "UP" : "DORMANT");
7129         drv->operstate = state;
7130         return netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, -1,
7131                                       state ? IF_OPER_UP : IF_OPER_DORMANT);
7132 }
7133
7134
7135 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
7136 {
7137         struct i802_bss *bss = priv;
7138         struct wpa_driver_nl80211_data *drv = bss->drv;
7139         struct nl_msg *msg;
7140         struct nl80211_sta_flag_update upd;
7141
7142         msg = nlmsg_alloc();
7143         if (!msg)
7144                 return -ENOMEM;
7145
7146         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
7147
7148         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
7149                     if_nametoindex(bss->ifname));
7150         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
7151
7152         os_memset(&upd, 0, sizeof(upd));
7153         upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
7154         if (authorized)
7155                 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
7156         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
7157
7158         return send_and_recv_msgs(drv, msg, NULL, NULL);
7159  nla_put_failure:
7160         nlmsg_free(msg);
7161         return -ENOBUFS;
7162 }
7163
7164
7165 /* Set kernel driver on given frequency (MHz) */
7166 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
7167 {
7168         struct i802_bss *bss = priv;
7169         return wpa_driver_nl80211_set_freq(bss, freq->freq, freq->ht_enabled,
7170                                            freq->sec_channel_offset);
7171 }
7172
7173
7174 #if defined(HOSTAPD) || defined(CONFIG_AP)
7175
7176 static inline int min_int(int a, int b)
7177 {
7178         if (a < b)
7179                 return a;
7180         return b;
7181 }
7182
7183
7184 static int get_key_handler(struct nl_msg *msg, void *arg)
7185 {
7186         struct nlattr *tb[NL80211_ATTR_MAX + 1];
7187         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7188
7189         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7190                   genlmsg_attrlen(gnlh, 0), NULL);
7191
7192         /*
7193          * TODO: validate the key index and mac address!
7194          * Otherwise, there's a race condition as soon as
7195          * the kernel starts sending key notifications.
7196          */
7197
7198         if (tb[NL80211_ATTR_KEY_SEQ])
7199                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
7200                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
7201         return NL_SKIP;
7202 }
7203
7204
7205 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
7206                            int idx, u8 *seq)
7207 {
7208         struct i802_bss *bss = priv;
7209         struct wpa_driver_nl80211_data *drv = bss->drv;
7210         struct nl_msg *msg;
7211
7212         msg = nlmsg_alloc();
7213         if (!msg)
7214                 return -ENOMEM;
7215
7216         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_KEY);
7217
7218         if (addr)
7219                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7220         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
7221         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
7222
7223         memset(seq, 0, 6);
7224
7225         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
7226  nla_put_failure:
7227         nlmsg_free(msg);
7228         return -ENOBUFS;
7229 }
7230
7231
7232 static int i802_set_rts(void *priv, int rts)
7233 {
7234         struct i802_bss *bss = priv;
7235         struct wpa_driver_nl80211_data *drv = bss->drv;
7236         struct nl_msg *msg;
7237         int ret = -ENOBUFS;
7238         u32 val;
7239
7240         msg = nlmsg_alloc();
7241         if (!msg)
7242                 return -ENOMEM;
7243
7244         if (rts >= 2347)
7245                 val = (u32) -1;
7246         else
7247                 val = rts;
7248
7249         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
7250         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7251         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
7252
7253         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7254         msg = NULL;
7255         if (!ret)
7256                 return 0;
7257 nla_put_failure:
7258         nlmsg_free(msg);
7259         wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
7260                    "%d (%s)", rts, ret, strerror(-ret));
7261         return ret;
7262 }
7263
7264
7265 static int i802_set_frag(void *priv, int frag)
7266 {
7267         struct i802_bss *bss = priv;
7268         struct wpa_driver_nl80211_data *drv = bss->drv;
7269         struct nl_msg *msg;
7270         int ret = -ENOBUFS;
7271         u32 val;
7272
7273         msg = nlmsg_alloc();
7274         if (!msg)
7275                 return -ENOMEM;
7276
7277         if (frag >= 2346)
7278                 val = (u32) -1;
7279         else
7280                 val = frag;
7281
7282         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
7283         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
7284         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
7285
7286         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7287         msg = NULL;
7288         if (!ret)
7289                 return 0;
7290 nla_put_failure:
7291         nlmsg_free(msg);
7292         wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
7293                    "%d: %d (%s)", frag, ret, strerror(-ret));
7294         return ret;
7295 }
7296
7297
7298 static int i802_flush(void *priv)
7299 {
7300         struct i802_bss *bss = priv;
7301         struct wpa_driver_nl80211_data *drv = bss->drv;
7302         struct nl_msg *msg;
7303         int res;
7304
7305         msg = nlmsg_alloc();
7306         if (!msg)
7307                 return -1;
7308
7309         nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_STATION);
7310
7311         /*
7312          * XXX: FIX! this needs to flush all VLANs too
7313          */
7314         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
7315                     if_nametoindex(bss->ifname));
7316
7317         res = send_and_recv_msgs(drv, msg, NULL, NULL);
7318         if (res) {
7319                 wpa_printf(MSG_DEBUG, "nl80211: Station flush failed: ret=%d "
7320                            "(%s)", res, strerror(-res));
7321         }
7322         return res;
7323  nla_put_failure:
7324         nlmsg_free(msg);
7325         return -ENOBUFS;
7326 }
7327
7328
7329 static int get_sta_handler(struct nl_msg *msg, void *arg)
7330 {
7331         struct nlattr *tb[NL80211_ATTR_MAX + 1];
7332         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
7333         struct hostap_sta_driver_data *data = arg;
7334         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
7335         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
7336                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
7337                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
7338                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
7339                 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
7340                 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
7341                 [NL80211_STA_INFO_TX_FAILED] = { .type = NLA_U32 },
7342         };
7343
7344         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
7345                   genlmsg_attrlen(gnlh, 0), NULL);
7346
7347         /*
7348          * TODO: validate the interface and mac address!
7349          * Otherwise, there's a race condition as soon as
7350          * the kernel starts sending station notifications.
7351          */
7352
7353         if (!tb[NL80211_ATTR_STA_INFO]) {
7354                 wpa_printf(MSG_DEBUG, "sta stats missing!");
7355                 return NL_SKIP;
7356         }
7357         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
7358                              tb[NL80211_ATTR_STA_INFO],
7359                              stats_policy)) {
7360                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
7361                 return NL_SKIP;
7362         }
7363
7364         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
7365                 data->inactive_msec =
7366                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
7367         if (stats[NL80211_STA_INFO_RX_BYTES])
7368                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
7369         if (stats[NL80211_STA_INFO_TX_BYTES])
7370                 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
7371         if (stats[NL80211_STA_INFO_RX_PACKETS])
7372                 data->rx_packets =
7373                         nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
7374         if (stats[NL80211_STA_INFO_TX_PACKETS])
7375                 data->tx_packets =
7376                         nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
7377         if (stats[NL80211_STA_INFO_TX_FAILED])
7378                 data->tx_retry_failed =
7379                         nla_get_u32(stats[NL80211_STA_INFO_TX_FAILED]);
7380
7381         return NL_SKIP;
7382 }
7383
7384 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
7385                               const u8 *addr)
7386 {
7387         struct i802_bss *bss = priv;
7388         struct wpa_driver_nl80211_data *drv = bss->drv;
7389         struct nl_msg *msg;
7390
7391         os_memset(data, 0, sizeof(*data));
7392         msg = nlmsg_alloc();
7393         if (!msg)
7394                 return -ENOMEM;
7395
7396         nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION);
7397
7398         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7399         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
7400
7401         return send_and_recv_msgs(drv, msg, get_sta_handler, data);
7402  nla_put_failure:
7403         nlmsg_free(msg);
7404         return -ENOBUFS;
7405 }
7406
7407
7408 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
7409                                     int cw_min, int cw_max, int burst_time)
7410 {
7411         struct i802_bss *bss = priv;
7412         struct wpa_driver_nl80211_data *drv = bss->drv;
7413         struct nl_msg *msg;
7414         struct nlattr *txq, *params;
7415
7416         msg = nlmsg_alloc();
7417         if (!msg)
7418                 return -1;
7419
7420         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_WIPHY);
7421
7422         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
7423
7424         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
7425         if (!txq)
7426                 goto nla_put_failure;
7427
7428         /* We are only sending parameters for a single TXQ at a time */
7429         params = nla_nest_start(msg, 1);
7430         if (!params)
7431                 goto nla_put_failure;
7432
7433         switch (queue) {
7434         case 0:
7435                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VO);
7436                 break;
7437         case 1:
7438                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_VI);
7439                 break;
7440         case 2:
7441                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BE);
7442                 break;
7443         case 3:
7444                 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, NL80211_TXQ_Q_BK);
7445                 break;
7446         }
7447         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
7448          * 32 usec, so need to convert the value here. */
7449         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
7450         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
7451         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
7452         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
7453
7454         nla_nest_end(msg, params);
7455
7456         nla_nest_end(msg, txq);
7457
7458         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
7459                 return 0;
7460         msg = NULL;
7461  nla_put_failure:
7462         nlmsg_free(msg);
7463         return -1;
7464 }
7465
7466
7467 static int i802_set_sta_vlan(void *priv, const u8 *addr,
7468                              const char *ifname, int vlan_id)
7469 {
7470         struct i802_bss *bss = priv;
7471         struct wpa_driver_nl80211_data *drv = bss->drv;
7472         struct nl_msg *msg;
7473         int ret = -ENOBUFS;
7474
7475         msg = nlmsg_alloc();
7476         if (!msg)
7477                 return -ENOMEM;
7478
7479         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_STATION);
7480
7481         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
7482                     if_nametoindex(bss->ifname));
7483         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
7484         NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
7485                     if_nametoindex(ifname));
7486
7487         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
7488         msg = NULL;
7489         if (ret < 0) {
7490                 wpa_printf(MSG_ERROR, "nl80211: NL80211_ATTR_STA_VLAN (addr="
7491                            MACSTR " ifname=%s vlan_id=%d) failed: %d (%s)",
7492                            MAC2STR(addr), ifname, vlan_id, ret,
7493                            strerror(-ret));
7494         }
7495  nla_put_failure:
7496         nlmsg_free(msg);
7497         return ret;
7498 }
7499
7500
7501 static int i802_get_inact_sec(void *priv, const u8 *addr)
7502 {
7503         struct hostap_sta_driver_data data;
7504         int ret;
7505
7506         data.inactive_msec = (unsigned long) -1;
7507         ret = i802_read_sta_data(priv, &data, addr);
7508         if (ret || data.inactive_msec == (unsigned long) -1)
7509                 return -1;
7510         return data.inactive_msec / 1000;
7511 }
7512
7513
7514 static int i802_sta_clear_stats(void *priv, const u8 *addr)
7515 {
7516 #if 0
7517         /* TODO */
7518 #endif
7519         return 0;
7520 }
7521
7522
7523 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
7524                            int reason)
7525 {
7526         struct i802_bss *bss = priv;
7527         struct wpa_driver_nl80211_data *drv = bss->drv;
7528         struct ieee80211_mgmt mgmt;
7529
7530         if (drv->device_ap_sme)
7531                 return wpa_driver_nl80211_sta_remove(bss, addr);
7532
7533         memset(&mgmt, 0, sizeof(mgmt));
7534         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
7535                                           WLAN_FC_STYPE_DEAUTH);
7536         memcpy(mgmt.da, addr, ETH_ALEN);
7537         memcpy(mgmt.sa, own_addr, ETH_ALEN);
7538         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
7539         mgmt.u.deauth.reason_code = host_to_le16(reason);
7540         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
7541                                             IEEE80211_HDRLEN +
7542                                             sizeof(mgmt.u.deauth), 0);
7543 }
7544
7545
7546 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
7547                              int reason)
7548 {
7549         struct i802_bss *bss = priv;
7550         struct wpa_driver_nl80211_data *drv = bss->drv;
7551         struct ieee80211_mgmt mgmt;
7552
7553         if (drv->device_ap_sme)
7554                 return wpa_driver_nl80211_sta_remove(bss, addr);
7555
7556         memset(&mgmt, 0, sizeof(mgmt));
7557         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
7558                                           WLAN_FC_STYPE_DISASSOC);
7559         memcpy(mgmt.da, addr, ETH_ALEN);
7560         memcpy(mgmt.sa, own_addr, ETH_ALEN);
7561         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
7562         mgmt.u.disassoc.reason_code = host_to_le16(reason);
7563         return wpa_driver_nl80211_send_mlme(bss, (u8 *) &mgmt,
7564                                             IEEE80211_HDRLEN +
7565                                             sizeof(mgmt.u.disassoc), 0);
7566 }
7567
7568 #endif /* HOSTAPD || CONFIG_AP */
7569
7570 #ifdef HOSTAPD
7571
7572 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
7573 {
7574         int i;
7575         int *old;
7576
7577         wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
7578                    ifidx);
7579         for (i = 0; i < drv->num_if_indices; i++) {
7580                 if (drv->if_indices[i] == 0) {
7581                         drv->if_indices[i] = ifidx;
7582                         return;
7583                 }
7584         }
7585
7586         if (drv->if_indices != drv->default_if_indices)
7587                 old = drv->if_indices;
7588         else
7589                 old = NULL;
7590
7591         drv->if_indices = os_realloc(old,
7592                                      sizeof(int) * (drv->num_if_indices + 1));
7593         if (!drv->if_indices) {
7594                 if (!old)
7595                         drv->if_indices = drv->default_if_indices;
7596                 else
7597                         drv->if_indices = old;
7598                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
7599                            "interfaces");
7600                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
7601                 return;
7602         } else if (!old)
7603                 os_memcpy(drv->if_indices, drv->default_if_indices,
7604                           sizeof(drv->default_if_indices));
7605         drv->if_indices[drv->num_if_indices] = ifidx;
7606         drv->num_if_indices++;
7607 }
7608
7609
7610 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
7611 {
7612         int i;
7613
7614         for (i = 0; i < drv->num_if_indices; i++) {
7615                 if (drv->if_indices[i] == ifidx) {
7616                         drv->if_indices[i] = 0;
7617                         break;
7618                 }
7619         }
7620 }
7621
7622
7623 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
7624 {
7625         int i;
7626
7627         for (i = 0; i < drv->num_if_indices; i++)
7628                 if (drv->if_indices[i] == ifidx)
7629                         return 1;
7630
7631         return 0;
7632 }
7633
7634
7635 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val,
7636                             const char *bridge_ifname)
7637 {
7638         struct i802_bss *bss = priv;
7639         struct wpa_driver_nl80211_data *drv = bss->drv;
7640         char name[IFNAMSIZ + 1];
7641
7642         os_snprintf(name, sizeof(name), "%s.sta%d", bss->ifname, aid);
7643         wpa_printf(MSG_DEBUG, "nl80211: Set WDS STA addr=" MACSTR
7644                    " aid=%d val=%d name=%s", MAC2STR(addr), aid, val, name);
7645         if (val) {
7646                 if (!if_nametoindex(name)) {
7647                         if (nl80211_create_iface(drv, name,
7648                                                  NL80211_IFTYPE_AP_VLAN,
7649                                                  NULL, 1) < 0)
7650                                 return -1;
7651                         if (bridge_ifname &&
7652                             linux_br_add_if(drv->global->ioctl_sock,
7653                                             bridge_ifname, name) < 0)
7654                                 return -1;
7655                 }
7656                 linux_set_iface_flags(drv->global->ioctl_sock, name, 1);
7657                 return i802_set_sta_vlan(priv, addr, name, 0);
7658         } else {
7659                 i802_set_sta_vlan(priv, addr, bss->ifname, 0);
7660                 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
7661                                                     name);
7662         }
7663 }
7664
7665
7666 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
7667 {
7668         struct wpa_driver_nl80211_data *drv = eloop_ctx;
7669         struct sockaddr_ll lladdr;
7670         unsigned char buf[3000];
7671         int len;
7672         socklen_t fromlen = sizeof(lladdr);
7673
7674         len = recvfrom(sock, buf, sizeof(buf), 0,
7675                        (struct sockaddr *)&lladdr, &fromlen);
7676         if (len < 0) {
7677                 perror("recv");
7678                 return;
7679         }
7680
7681         if (have_ifidx(drv, lladdr.sll_ifindex))
7682                 drv_event_eapol_rx(drv->ctx, lladdr.sll_addr, buf, len);
7683 }
7684
7685
7686 static int i802_check_bridge(struct wpa_driver_nl80211_data *drv,
7687                              struct i802_bss *bss,
7688                              const char *brname, const char *ifname)
7689 {
7690         int ifindex;
7691         char in_br[IFNAMSIZ];
7692
7693         os_strlcpy(bss->brname, brname, IFNAMSIZ);
7694         ifindex = if_nametoindex(brname);
7695         if (ifindex == 0) {
7696                 /*
7697                  * Bridge was configured, but the bridge device does
7698                  * not exist. Try to add it now.
7699                  */
7700                 if (linux_br_add(drv->global->ioctl_sock, brname) < 0) {
7701                         wpa_printf(MSG_ERROR, "nl80211: Failed to add the "
7702                                    "bridge interface %s: %s",
7703                                    brname, strerror(errno));
7704                         return -1;
7705                 }
7706                 bss->added_bridge = 1;
7707                 add_ifidx(drv, if_nametoindex(brname));
7708         }
7709
7710         if (linux_br_get(in_br, ifname) == 0) {
7711                 if (os_strcmp(in_br, brname) == 0)
7712                         return 0; /* already in the bridge */
7713
7714                 wpa_printf(MSG_DEBUG, "nl80211: Removing interface %s from "
7715                            "bridge %s", ifname, in_br);
7716                 if (linux_br_del_if(drv->global->ioctl_sock, in_br, ifname) <
7717                     0) {
7718                         wpa_printf(MSG_ERROR, "nl80211: Failed to "
7719                                    "remove interface %s from bridge "
7720                                    "%s: %s",
7721                                    ifname, brname, strerror(errno));
7722                         return -1;
7723                 }
7724         }
7725
7726         wpa_printf(MSG_DEBUG, "nl80211: Adding interface %s into bridge %s",
7727                    ifname, brname);
7728         if (linux_br_add_if(drv->global->ioctl_sock, brname, ifname) < 0) {
7729                 wpa_printf(MSG_ERROR, "nl80211: Failed to add interface %s "
7730                            "into bridge %s: %s",
7731                            ifname, brname, strerror(errno));
7732                 return -1;
7733         }
7734         bss->added_if_into_bridge = 1;
7735
7736         return 0;
7737 }
7738
7739
7740 static void *i802_init(struct hostapd_data *hapd,
7741                        struct wpa_init_params *params)
7742 {
7743         struct wpa_driver_nl80211_data *drv;
7744         struct i802_bss *bss;
7745         size_t i;
7746         char brname[IFNAMSIZ];
7747         int ifindex, br_ifindex;
7748         int br_added = 0;
7749
7750         bss = wpa_driver_nl80211_init(hapd, params->ifname,
7751                                       params->global_priv);
7752         if (bss == NULL)
7753                 return NULL;
7754
7755         drv = bss->drv;
7756         drv->nlmode = NL80211_IFTYPE_AP;
7757         drv->eapol_sock = -1;
7758
7759         if (linux_br_get(brname, params->ifname) == 0) {
7760                 wpa_printf(MSG_DEBUG, "nl80211: Interface %s is in bridge %s",
7761                            params->ifname, brname);
7762                 br_ifindex = if_nametoindex(brname);
7763         } else {
7764                 brname[0] = '\0';
7765                 br_ifindex = 0;
7766         }
7767
7768         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
7769         drv->if_indices = drv->default_if_indices;
7770         for (i = 0; i < params->num_bridge; i++) {
7771                 if (params->bridge[i]) {
7772                         ifindex = if_nametoindex(params->bridge[i]);
7773                         if (ifindex)
7774                                 add_ifidx(drv, ifindex);
7775                         if (ifindex == br_ifindex)
7776                                 br_added = 1;
7777                 }
7778         }
7779         if (!br_added && br_ifindex &&
7780             (params->num_bridge == 0 || !params->bridge[0]))
7781                 add_ifidx(drv, br_ifindex);
7782
7783         /* start listening for EAPOL on the default AP interface */
7784         add_ifidx(drv, drv->ifindex);
7785
7786         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0))
7787                 goto failed;
7788
7789         if (params->bssid) {
7790                 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
7791                                        params->bssid))
7792                         goto failed;
7793         }
7794
7795         if (wpa_driver_nl80211_set_mode(bss, drv->nlmode)) {
7796                 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
7797                            "into AP mode", bss->ifname);
7798                 goto failed;
7799         }
7800
7801         if (params->num_bridge && params->bridge[0] &&
7802             i802_check_bridge(drv, bss, params->bridge[0], params->ifname) < 0)
7803                 goto failed;
7804
7805         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1))
7806                 goto failed;
7807
7808         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
7809         if (drv->eapol_sock < 0) {
7810                 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
7811                 goto failed;
7812         }
7813
7814         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
7815         {
7816                 printf("Could not register read socket for eapol\n");
7817                 goto failed;
7818         }
7819
7820         if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
7821                                params->own_addr))
7822                 goto failed;
7823
7824         memcpy(bss->addr, params->own_addr, ETH_ALEN);
7825
7826         return bss;
7827
7828 failed:
7829         wpa_driver_nl80211_deinit(bss);
7830         return NULL;
7831 }
7832
7833
7834 static void i802_deinit(void *priv)
7835 {
7836         wpa_driver_nl80211_deinit(priv);
7837 }
7838
7839 #endif /* HOSTAPD */
7840
7841
7842 static enum nl80211_iftype wpa_driver_nl80211_if_type(
7843         enum wpa_driver_if_type type)
7844 {
7845         switch (type) {
7846         case WPA_IF_STATION:
7847                 return NL80211_IFTYPE_STATION;
7848         case WPA_IF_P2P_CLIENT:
7849         case WPA_IF_P2P_GROUP:
7850                 return NL80211_IFTYPE_P2P_CLIENT;
7851         case WPA_IF_AP_VLAN:
7852                 return NL80211_IFTYPE_AP_VLAN;
7853         case WPA_IF_AP_BSS:
7854                 return NL80211_IFTYPE_AP;
7855         case WPA_IF_P2P_GO:
7856                 return NL80211_IFTYPE_P2P_GO;
7857         }
7858         return -1;
7859 }
7860
7861
7862 #ifdef CONFIG_P2P
7863
7864 static int nl80211_addr_in_use(struct nl80211_global *global, const u8 *addr)
7865 {
7866         struct wpa_driver_nl80211_data *drv;
7867         dl_list_for_each(drv, &global->interfaces,
7868                          struct wpa_driver_nl80211_data, list) {
7869                 if (os_memcmp(addr, drv->first_bss.addr, ETH_ALEN) == 0)
7870                         return 1;
7871         }
7872         return 0;
7873 }
7874
7875
7876 static int nl80211_p2p_interface_addr(struct wpa_driver_nl80211_data *drv,
7877                                       u8 *new_addr)
7878 {
7879         unsigned int idx;
7880
7881         if (!drv->global)
7882                 return -1;
7883
7884         os_memcpy(new_addr, drv->first_bss.addr, ETH_ALEN);
7885         for (idx = 0; idx < 64; idx++) {
7886                 new_addr[0] = drv->first_bss.addr[0] | 0x02;
7887                 new_addr[0] ^= idx << 2;
7888                 if (!nl80211_addr_in_use(drv->global, new_addr))
7889                         break;
7890         }
7891         if (idx == 64)
7892                 return -1;
7893
7894         wpa_printf(MSG_DEBUG, "nl80211: Assigned new P2P Interface Address "
7895                    MACSTR, MAC2STR(new_addr));
7896
7897         return 0;
7898 }
7899
7900 #endif /* CONFIG_P2P */
7901
7902
7903 static int wpa_driver_nl80211_if_add(void *priv, enum wpa_driver_if_type type,
7904                                      const char *ifname, const u8 *addr,
7905                                      void *bss_ctx, void **drv_priv,
7906                                      char *force_ifname, u8 *if_addr,
7907                                      const char *bridge)
7908 {
7909         struct i802_bss *bss = priv;
7910         struct wpa_driver_nl80211_data *drv = bss->drv;
7911         int ifidx;
7912 #ifdef HOSTAPD
7913         struct i802_bss *new_bss = NULL;
7914
7915         if (type == WPA_IF_AP_BSS) {
7916                 new_bss = os_zalloc(sizeof(*new_bss));
7917                 if (new_bss == NULL)
7918                         return -1;
7919         }
7920 #endif /* HOSTAPD */
7921
7922         if (addr)
7923                 os_memcpy(if_addr, addr, ETH_ALEN);
7924         ifidx = nl80211_create_iface(drv, ifname,
7925                                      wpa_driver_nl80211_if_type(type), addr,
7926                                      0);
7927         if (ifidx < 0) {
7928 #ifdef HOSTAPD
7929                 os_free(new_bss);
7930 #endif /* HOSTAPD */
7931                 return -1;
7932         }
7933
7934         if (!addr &&
7935             linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
7936                                if_addr) < 0) {
7937                 nl80211_remove_iface(drv, ifidx);
7938                 return -1;
7939         }
7940
7941 #ifdef CONFIG_P2P
7942         if (!addr &&
7943             (type == WPA_IF_P2P_CLIENT || type == WPA_IF_P2P_GROUP ||
7944              type == WPA_IF_P2P_GO)) {
7945                 /* Enforce unique P2P Interface Address */
7946                 u8 new_addr[ETH_ALEN], own_addr[ETH_ALEN];
7947
7948                 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname,
7949                                        own_addr) < 0 ||
7950                     linux_get_ifhwaddr(drv->global->ioctl_sock, ifname,
7951                                        new_addr) < 0) {
7952                         nl80211_remove_iface(drv, ifidx);
7953                         return -1;
7954                 }
7955                 if (os_memcmp(own_addr, new_addr, ETH_ALEN) == 0) {
7956                         wpa_printf(MSG_DEBUG, "nl80211: Allocate new address "
7957                                    "for P2P group interface");
7958                         if (nl80211_p2p_interface_addr(drv, new_addr) < 0) {
7959                                 nl80211_remove_iface(drv, ifidx);
7960                                 return -1;
7961                         }
7962                         if (linux_set_ifhwaddr(drv->global->ioctl_sock, ifname,
7963                                                new_addr) < 0) {
7964                                 nl80211_remove_iface(drv, ifidx);
7965                                 return -1;
7966                         }
7967                 }
7968                 os_memcpy(if_addr, new_addr, ETH_ALEN);
7969         }
7970 #endif /* CONFIG_P2P */
7971
7972 #ifdef HOSTAPD
7973         if (bridge &&
7974             i802_check_bridge(drv, new_bss, bridge, ifname) < 0) {
7975                 wpa_printf(MSG_ERROR, "nl80211: Failed to add the new "
7976                            "interface %s to a bridge %s", ifname, bridge);
7977                 nl80211_remove_iface(drv, ifidx);
7978                 os_free(new_bss);
7979                 return -1;
7980         }
7981
7982         if (type == WPA_IF_AP_BSS) {
7983                 if (linux_set_iface_flags(drv->global->ioctl_sock, ifname, 1))
7984                 {
7985                         nl80211_remove_iface(drv, ifidx);
7986                         os_free(new_bss);
7987                         return -1;
7988                 }
7989                 os_strlcpy(new_bss->ifname, ifname, IFNAMSIZ);
7990                 os_memcpy(new_bss->addr, if_addr, ETH_ALEN);
7991                 new_bss->ifindex = ifidx;
7992                 new_bss->drv = drv;
7993                 new_bss->next = drv->first_bss.next;
7994                 new_bss->freq = drv->first_bss.freq;
7995                 drv->first_bss.next = new_bss;
7996                 if (drv_priv)
7997                         *drv_priv = new_bss;
7998                 nl80211_init_bss(new_bss);
7999
8000                 /* Subscribe management frames for this WPA_IF_AP_BSS */
8001                 if (nl80211_setup_ap(new_bss))
8002                         return -1;
8003         }
8004 #endif /* HOSTAPD */
8005
8006         if (drv->global)
8007                 drv->global->if_add_ifindex = ifidx;
8008
8009         return 0;
8010 }
8011
8012
8013 static int wpa_driver_nl80211_if_remove(void *priv,
8014                                         enum wpa_driver_if_type type,
8015                                         const char *ifname)
8016 {
8017         struct i802_bss *bss = priv;
8018         struct wpa_driver_nl80211_data *drv = bss->drv;
8019         int ifindex = if_nametoindex(ifname);
8020
8021         wpa_printf(MSG_DEBUG, "nl80211: %s(type=%d ifname=%s) ifindex=%d",
8022                    __func__, type, ifname, ifindex);
8023         if (ifindex <= 0)
8024                 return -1;
8025
8026 #ifdef HOSTAPD
8027         if (bss->added_if_into_bridge) {
8028                 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname,
8029                                     bss->ifname) < 0)
8030                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
8031                                    "interface %s from bridge %s: %s",
8032                                    bss->ifname, bss->brname, strerror(errno));
8033         }
8034         if (bss->added_bridge) {
8035                 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0)
8036                         wpa_printf(MSG_INFO, "nl80211: Failed to remove "
8037                                    "bridge %s: %s",
8038                                    bss->brname, strerror(errno));
8039         }
8040 #endif /* HOSTAPD */
8041
8042         nl80211_remove_iface(drv, ifindex);
8043
8044 #ifdef HOSTAPD
8045         if (type != WPA_IF_AP_BSS)
8046                 return 0;
8047
8048         if (bss != &drv->first_bss) {
8049                 struct i802_bss *tbss;
8050
8051                 for (tbss = &drv->first_bss; tbss; tbss = tbss->next) {
8052                         if (tbss->next == bss) {
8053                                 tbss->next = bss->next;
8054                                 /* Unsubscribe management frames */
8055                                 nl80211_teardown_ap(bss);
8056                                 nl80211_destroy_bss(bss);
8057                                 os_free(bss);
8058                                 bss = NULL;
8059                                 break;
8060                         }
8061                 }
8062                 if (bss)
8063                         wpa_printf(MSG_INFO, "nl80211: %s - could not find "
8064                                    "BSS %p in the list", __func__, bss);
8065         }
8066 #endif /* HOSTAPD */
8067
8068         return 0;
8069 }
8070
8071
8072 static int cookie_handler(struct nl_msg *msg, void *arg)
8073 {
8074         struct nlattr *tb[NL80211_ATTR_MAX + 1];
8075         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
8076         u64 *cookie = arg;
8077         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
8078                   genlmsg_attrlen(gnlh, 0), NULL);
8079         if (tb[NL80211_ATTR_COOKIE])
8080                 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
8081         return NL_SKIP;
8082 }
8083
8084
8085 static int nl80211_send_frame_cmd(struct i802_bss *bss,
8086                                   unsigned int freq, unsigned int wait,
8087                                   const u8 *buf, size_t buf_len,
8088                                   u64 *cookie_out, int no_cck, int no_ack,
8089                                   int offchanok)
8090 {
8091         struct wpa_driver_nl80211_data *drv = bss->drv;
8092         struct nl_msg *msg;
8093         u64 cookie;
8094         int ret = -1;
8095
8096         msg = nlmsg_alloc();
8097         if (!msg)
8098                 return -1;
8099
8100         wpa_printf(MSG_DEBUG, "nl80211: CMD_FRAME freq=%u wait=%u no_cck=%d "
8101                    "no_ack=%d offchanok=%d",
8102                    freq, wait, no_cck, no_ack, offchanok);
8103         nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME);
8104
8105         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
8106         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
8107 #ifndef ANDROID_P2P
8108         if (wait)
8109                 NLA_PUT_U32(msg, NL80211_ATTR_DURATION, wait);
8110 #endif
8111         if (offchanok && (drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX))
8112                 NLA_PUT_FLAG(msg, NL80211_ATTR_OFFCHANNEL_TX_OK);
8113         if (no_cck)
8114                 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE);
8115         if (no_ack)
8116                 NLA_PUT_FLAG(msg, NL80211_ATTR_DONT_WAIT_FOR_ACK);
8117
8118         NLA_PUT(msg, NL80211_ATTR_FRAME, buf_len, buf);
8119
8120         cookie = 0;
8121         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
8122         msg = NULL;
8123         if (ret) {
8124                 wpa_printf(MSG_DEBUG, "nl80211: Frame command failed: ret=%d "
8125                            "(%s) (freq=%u wait=%u)", ret, strerror(-ret),
8126                            freq, wait);
8127                 goto nla_put_failure;
8128         }
8129         wpa_printf(MSG_DEBUG, "nl80211: Frame TX command accepted%s; "
8130                    "cookie 0x%llx", no_ack ? " (no ACK)" : "",
8131                    (long long unsigned int) cookie);
8132
8133         if (cookie_out)
8134                 *cookie_out = no_ack ? (u64) -1 : cookie;
8135
8136 nla_put_failure:
8137         nlmsg_free(msg);
8138         return ret;
8139 }
8140
8141
8142 static int wpa_driver_nl80211_send_action(void *priv, unsigned int freq,
8143                                           unsigned int wait_time,
8144                                           const u8 *dst, const u8 *src,
8145                                           const u8 *bssid,
8146                                           const u8 *data, size_t data_len,
8147                                           int no_cck)
8148 {
8149         struct i802_bss *bss = priv;
8150         struct wpa_driver_nl80211_data *drv = bss->drv;
8151         int ret = -1;
8152         u8 *buf;
8153         struct ieee80211_hdr *hdr;
8154
8155         wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, "
8156                    "freq=%u MHz wait=%d ms no_cck=%d)",
8157                    drv->ifindex, freq, wait_time, no_cck);
8158
8159         buf = os_zalloc(24 + data_len);
8160         if (buf == NULL)
8161                 return ret;
8162         os_memcpy(buf + 24, data, data_len);
8163         hdr = (struct ieee80211_hdr *) buf;
8164         hdr->frame_control =
8165                 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION);
8166         os_memcpy(hdr->addr1, dst, ETH_ALEN);
8167         os_memcpy(hdr->addr2, src, ETH_ALEN);
8168         os_memcpy(hdr->addr3, bssid, ETH_ALEN);
8169
8170         if (is_ap_interface(drv->nlmode))
8171                 ret = wpa_driver_nl80211_send_mlme_freq(priv, buf,
8172                                                         24 + data_len,
8173                                                         0, freq, no_cck, 1,
8174                                                         wait_time);
8175         else
8176                 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf,
8177                                              24 + data_len,
8178                                              &drv->send_action_cookie,
8179                                              no_cck, 0, 1);
8180
8181         os_free(buf);
8182         return ret;
8183 }
8184
8185
8186 static void wpa_driver_nl80211_send_action_cancel_wait(void *priv)
8187 {
8188         struct i802_bss *bss = priv;
8189         struct wpa_driver_nl80211_data *drv = bss->drv;
8190         struct nl_msg *msg;
8191         int ret;
8192
8193         msg = nlmsg_alloc();
8194         if (!msg)
8195                 return;
8196
8197         nl80211_cmd(drv, msg, 0, NL80211_CMD_FRAME_WAIT_CANCEL);
8198
8199         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8200         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->send_action_cookie);
8201
8202         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8203         msg = NULL;
8204         if (ret)
8205                 wpa_printf(MSG_DEBUG, "nl80211: wait cancel failed: ret=%d "
8206                            "(%s)", ret, strerror(-ret));
8207
8208  nla_put_failure:
8209         nlmsg_free(msg);
8210 }
8211
8212
8213 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
8214                                                 unsigned int duration)
8215 {
8216         struct i802_bss *bss = priv;
8217         struct wpa_driver_nl80211_data *drv = bss->drv;
8218         struct nl_msg *msg;
8219         int ret;
8220         u64 cookie;
8221
8222         msg = nlmsg_alloc();
8223         if (!msg)
8224                 return -1;
8225
8226         nl80211_cmd(drv, msg, 0, NL80211_CMD_REMAIN_ON_CHANNEL);
8227
8228         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8229         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
8230         NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
8231
8232         cookie = 0;
8233         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
8234         msg = NULL;
8235         if (ret == 0) {
8236                 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
8237                            "0x%llx for freq=%u MHz duration=%u",
8238                            (long long unsigned int) cookie, freq, duration);
8239                 drv->remain_on_chan_cookie = cookie;
8240                 drv->pending_remain_on_chan = 1;
8241                 return 0;
8242         }
8243         wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
8244                    "(freq=%d duration=%u): %d (%s)",
8245                    freq, duration, ret, strerror(-ret));
8246 nla_put_failure:
8247         nlmsg_free(msg);
8248         return -1;
8249 }
8250
8251
8252 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
8253 {
8254         struct i802_bss *bss = priv;
8255         struct wpa_driver_nl80211_data *drv = bss->drv;
8256         struct nl_msg *msg;
8257         int ret;
8258
8259         if (!drv->pending_remain_on_chan) {
8260                 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
8261                            "to cancel");
8262                 return -1;
8263         }
8264
8265         wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
8266                    "0x%llx",
8267                    (long long unsigned int) drv->remain_on_chan_cookie);
8268
8269         msg = nlmsg_alloc();
8270         if (!msg)
8271                 return -1;
8272
8273         nl80211_cmd(drv, msg, 0, NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL);
8274
8275         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8276         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
8277
8278         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8279         msg = NULL;
8280         if (ret == 0)
8281                 return 0;
8282         wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
8283                    "%d (%s)", ret, strerror(-ret));
8284 nla_put_failure:
8285         nlmsg_free(msg);
8286         return -1;
8287 }
8288
8289
8290 static int wpa_driver_nl80211_probe_req_report(void *priv, int report)
8291 {
8292         struct i802_bss *bss = priv;
8293         struct wpa_driver_nl80211_data *drv = bss->drv;
8294
8295         if (!report) {
8296                 if (bss->nl_preq && drv->device_ap_sme &&
8297                     is_ap_interface(drv->nlmode)) {
8298                         /*
8299                          * Do not disable Probe Request reporting that was
8300                          * enabled in nl80211_setup_ap().
8301                          */
8302                         wpa_printf(MSG_DEBUG, "nl80211: Skip disabling of "
8303                                    "Probe Request reporting nl_preq=%p while "
8304                                    "in AP mode", bss->nl_preq);
8305                 } else if (bss->nl_preq) {
8306                         wpa_printf(MSG_DEBUG, "nl80211: Disable Probe Request "
8307                                    "reporting nl_preq=%p", bss->nl_preq);
8308                         eloop_unregister_read_sock(
8309                                 nl_socket_get_fd(bss->nl_preq));
8310                         nl_destroy_handles(&bss->nl_preq);
8311                 }
8312                 return 0;
8313         }
8314
8315         if (bss->nl_preq) {
8316                 wpa_printf(MSG_DEBUG, "nl80211: Probe Request reporting "
8317                            "already on! nl_preq=%p", bss->nl_preq);
8318                 return 0;
8319         }
8320
8321         bss->nl_preq = nl_create_handle(drv->global->nl_cb, "preq");
8322         if (bss->nl_preq == NULL)
8323                 return -1;
8324         wpa_printf(MSG_DEBUG, "nl80211: Enable Probe Request "
8325                    "reporting nl_preq=%p", bss->nl_preq);
8326
8327         if (nl80211_register_frame(bss, bss->nl_preq,
8328                                    (WLAN_FC_TYPE_MGMT << 2) |
8329                                    (WLAN_FC_STYPE_PROBE_REQ << 4),
8330                                    NULL, 0) < 0)
8331                 goto out_err;
8332
8333         eloop_register_read_sock(nl_socket_get_fd(bss->nl_preq),
8334                                  wpa_driver_nl80211_event_receive, bss->nl_cb,
8335                                  bss->nl_preq);
8336
8337         return 0;
8338
8339  out_err:
8340         nl_destroy_handles(&bss->nl_preq);
8341         return -1;
8342 }
8343
8344
8345 static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv,
8346                                      int ifindex, int disabled)
8347 {
8348         struct nl_msg *msg;
8349         struct nlattr *bands, *band;
8350         int ret;
8351
8352         msg = nlmsg_alloc();
8353         if (!msg)
8354                 return -1;
8355
8356         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_TX_BITRATE_MASK);
8357         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
8358
8359         bands = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
8360         if (!bands)
8361                 goto nla_put_failure;
8362
8363         /*
8364          * Disable 2 GHz rates 1, 2, 5.5, 11 Mbps by masking out everything
8365          * else apart from 6, 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS
8366          * rates. All 5 GHz rates are left enabled.
8367          */
8368         band = nla_nest_start(msg, NL80211_BAND_2GHZ);
8369         if (!band)
8370                 goto nla_put_failure;
8371         if (disabled) {
8372                 NLA_PUT(msg, NL80211_TXRATE_LEGACY, 8,
8373                         "\x0c\x12\x18\x24\x30\x48\x60\x6c");
8374         }
8375         nla_nest_end(msg, band);
8376
8377         nla_nest_end(msg, bands);
8378
8379         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
8380         msg = NULL;
8381         if (ret) {
8382                 wpa_printf(MSG_DEBUG, "nl80211: Set TX rates failed: ret=%d "
8383                            "(%s)", ret, strerror(-ret));
8384         }
8385
8386         return ret;
8387
8388 nla_put_failure:
8389         nlmsg_free(msg);
8390         return -1;
8391 }
8392
8393
8394 static int wpa_driver_nl80211_deinit_ap(void *priv)
8395 {
8396         struct i802_bss *bss = priv;
8397         struct wpa_driver_nl80211_data *drv = bss->drv;
8398         if (!is_ap_interface(drv->nlmode))
8399                 return -1;
8400         wpa_driver_nl80211_del_beacon(drv);
8401         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
8402 }
8403
8404
8405 static int wpa_driver_nl80211_deinit_p2p_cli(void *priv)
8406 {
8407         struct i802_bss *bss = priv;
8408         struct wpa_driver_nl80211_data *drv = bss->drv;
8409         if (drv->nlmode != NL80211_IFTYPE_P2P_CLIENT)
8410                 return -1;
8411         return wpa_driver_nl80211_set_mode(priv, NL80211_IFTYPE_STATION);
8412 }
8413
8414
8415 static void wpa_driver_nl80211_resume(void *priv)
8416 {
8417         struct i802_bss *bss = priv;
8418         struct wpa_driver_nl80211_data *drv = bss->drv;
8419         if (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 1)) {
8420                 wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface up on "
8421                            "resume event");
8422         }
8423 }
8424
8425
8426 static int nl80211_send_ft_action(void *priv, u8 action, const u8 *target_ap,
8427                                   const u8 *ies, size_t ies_len)
8428 {
8429         struct i802_bss *bss = priv;
8430         struct wpa_driver_nl80211_data *drv = bss->drv;
8431         int ret;
8432         u8 *data, *pos;
8433         size_t data_len;
8434         const u8 *own_addr = bss->addr;
8435
8436         if (action != 1) {
8437                 wpa_printf(MSG_ERROR, "nl80211: Unsupported send_ft_action "
8438                            "action %d", action);
8439                 return -1;
8440         }
8441
8442         /*
8443          * Action frame payload:
8444          * Category[1] = 6 (Fast BSS Transition)
8445          * Action[1] = 1 (Fast BSS Transition Request)
8446          * STA Address
8447          * Target AP Address
8448          * FT IEs
8449          */
8450
8451         data_len = 2 + 2 * ETH_ALEN + ies_len;
8452         data = os_malloc(data_len);
8453         if (data == NULL)
8454                 return -1;
8455         pos = data;
8456         *pos++ = 0x06; /* FT Action category */
8457         *pos++ = action;
8458         os_memcpy(pos, own_addr, ETH_ALEN);
8459         pos += ETH_ALEN;
8460         os_memcpy(pos, target_ap, ETH_ALEN);
8461         pos += ETH_ALEN;
8462         os_memcpy(pos, ies, ies_len);
8463
8464         ret = wpa_driver_nl80211_send_action(bss, drv->assoc_freq, 0,
8465                                              drv->bssid, own_addr, drv->bssid,
8466                                              data, data_len, 0);
8467         os_free(data);
8468
8469         return ret;
8470 }
8471
8472
8473 static int nl80211_signal_monitor(void *priv, int threshold, int hysteresis)
8474 {
8475         struct i802_bss *bss = priv;
8476         struct wpa_driver_nl80211_data *drv = bss->drv;
8477         struct nl_msg *msg, *cqm = NULL;
8478
8479         wpa_printf(MSG_DEBUG, "nl80211: Signal monitor threshold=%d "
8480                    "hysteresis=%d", threshold, hysteresis);
8481
8482         msg = nlmsg_alloc();
8483         if (!msg)
8484                 return -1;
8485
8486         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_CQM);
8487
8488         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
8489
8490         cqm = nlmsg_alloc();
8491         if (cqm == NULL)
8492                 return -1;
8493
8494         NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_THOLD, threshold);
8495         NLA_PUT_U32(cqm, NL80211_ATTR_CQM_RSSI_HYST, hysteresis);
8496         nla_put_nested(msg, NL80211_ATTR_CQM, cqm);
8497
8498         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
8499                 return 0;
8500         msg = NULL;
8501
8502 nla_put_failure:
8503         nlmsg_free(cqm);
8504         nlmsg_free(msg);
8505         return -1;
8506 }
8507
8508
8509 static int nl80211_signal_poll(void *priv, struct wpa_signal_info *si)
8510 {
8511         struct i802_bss *bss = priv;
8512         struct wpa_driver_nl80211_data *drv = bss->drv;
8513         int res;
8514
8515         os_memset(si, 0, sizeof(*si));
8516         res = nl80211_get_link_signal(drv, si);
8517         if (res != 0)
8518                 return res;
8519
8520         return nl80211_get_link_noise(drv, si);
8521 }
8522
8523
8524 static int wpa_driver_nl80211_shared_freq(void *priv)
8525 {
8526         struct i802_bss *bss = priv;
8527         struct wpa_driver_nl80211_data *drv = bss->drv;
8528         struct wpa_driver_nl80211_data *driver;
8529         int freq = 0;
8530
8531         /*
8532          * If the same PHY is in connected state with some other interface,
8533          * then retrieve the assoc freq.
8534          */
8535         wpa_printf(MSG_DEBUG, "nl80211: Get shared freq for PHY %s",
8536                    drv->phyname);
8537
8538         dl_list_for_each(driver, &drv->global->interfaces,
8539                          struct wpa_driver_nl80211_data, list) {
8540                 if (drv == driver ||
8541                     os_strcmp(drv->phyname, driver->phyname) != 0 ||
8542 #ifdef ANDROID_P2P
8543                     (!driver->associated && !is_ap_interface(driver->nlmode)))
8544 #else
8545                     !driver->associated)
8546 #endif
8547                         continue;
8548
8549                 wpa_printf(MSG_DEBUG, "nl80211: Found a match for PHY %s - %s "
8550                            MACSTR,
8551                            driver->phyname, driver->first_bss.ifname,
8552                            MAC2STR(driver->first_bss.addr));
8553                 if (is_ap_interface(driver->nlmode))
8554                         freq = driver->first_bss.freq;
8555                 else
8556                         freq = nl80211_get_assoc_freq(driver);
8557                 wpa_printf(MSG_DEBUG, "nl80211: Shared freq for PHY %s: %d",
8558                            drv->phyname, freq);
8559         }
8560
8561         if (!freq)
8562                 wpa_printf(MSG_DEBUG, "nl80211: No shared interface for "
8563                            "PHY (%s) in associated state", drv->phyname);
8564
8565         return freq;
8566 }
8567
8568
8569 static int nl80211_send_frame(void *priv, const u8 *data, size_t data_len,
8570                               int encrypt)
8571 {
8572         struct i802_bss *bss = priv;
8573         return wpa_driver_nl80211_send_frame(bss, data, data_len, encrypt, 0,
8574                                              0, 0, 0, 0);
8575 }
8576
8577
8578 static int nl80211_set_param(void *priv, const char *param)
8579 {
8580         wpa_printf(MSG_DEBUG, "nl80211: driver param='%s'", param);
8581         if (param == NULL)
8582                 return 0;
8583
8584 #ifdef CONFIG_P2P
8585         if (os_strstr(param, "use_p2p_group_interface=1")) {
8586                 struct i802_bss *bss = priv;
8587                 struct wpa_driver_nl80211_data *drv = bss->drv;
8588
8589                 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group "
8590                            "interface");
8591                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT;
8592                 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P;
8593         }
8594 #ifdef ANDROID_P2P
8595         if(os_strstr(param, "use_multi_chan_concurrent=1")) {
8596                 struct i802_bss *bss = priv;
8597                 struct wpa_driver_nl80211_data *drv = bss->drv;
8598                 wpa_printf(MSG_DEBUG, "nl80211: Use Multi channel "
8599                            "concurrency");
8600                 drv->capa.flags |= WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT;
8601         }
8602 #endif
8603 #endif /* CONFIG_P2P */
8604
8605         return 0;
8606 }
8607
8608
8609 static void * nl80211_global_init(void)
8610 {
8611         struct nl80211_global *global;
8612         struct netlink_config *cfg;
8613
8614         global = os_zalloc(sizeof(*global));
8615         if (global == NULL)
8616                 return NULL;
8617         global->ioctl_sock = -1;
8618         dl_list_init(&global->interfaces);
8619         global->if_add_ifindex = -1;
8620
8621         cfg = os_zalloc(sizeof(*cfg));
8622         if (cfg == NULL)
8623                 goto err;
8624
8625         cfg->ctx = global;
8626         cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
8627         cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
8628         global->netlink = netlink_init(cfg);
8629         if (global->netlink == NULL) {
8630                 os_free(cfg);
8631                 goto err;
8632         }
8633
8634         if (wpa_driver_nl80211_init_nl_global(global) < 0)
8635                 goto err;
8636
8637         global->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
8638         if (global->ioctl_sock < 0) {
8639                 perror("socket(PF_INET,SOCK_DGRAM)");
8640                 goto err;
8641         }
8642
8643         return global;
8644
8645 err:
8646         nl80211_global_deinit(global);
8647         return NULL;
8648 }
8649
8650
8651 static void nl80211_global_deinit(void *priv)
8652 {
8653         struct nl80211_global *global = priv;
8654         if (global == NULL)
8655                 return;
8656         if (!dl_list_empty(&global->interfaces)) {
8657                 wpa_printf(MSG_ERROR, "nl80211: %u interface(s) remain at "
8658                            "nl80211_global_deinit",
8659                            dl_list_len(&global->interfaces));
8660         }
8661
8662         if (global->netlink)
8663                 netlink_deinit(global->netlink);
8664
8665         nl_destroy_handles(&global->nl);
8666
8667         if (global->nl_event) {
8668                 eloop_unregister_read_sock(
8669                         nl_socket_get_fd(global->nl_event));
8670                 nl_destroy_handles(&global->nl_event);
8671         }
8672
8673         nl_cb_put(global->nl_cb);
8674
8675         if (global->ioctl_sock >= 0)
8676                 close(global->ioctl_sock);
8677
8678         os_free(global);
8679 }
8680
8681
8682 static const char * nl80211_get_radio_name(void *priv)
8683 {
8684         struct i802_bss *bss = priv;
8685         struct wpa_driver_nl80211_data *drv = bss->drv;
8686         return drv->phyname;
8687 }
8688
8689
8690 static int nl80211_pmkid(struct i802_bss *bss, int cmd, const u8 *bssid,
8691                          const u8 *pmkid)
8692 {
8693         struct nl_msg *msg;
8694
8695         msg = nlmsg_alloc();
8696         if (!msg)
8697                 return -ENOMEM;
8698
8699         nl80211_cmd(bss->drv, msg, 0, cmd);
8700
8701         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));
8702         if (pmkid)
8703                 NLA_PUT(msg, NL80211_ATTR_PMKID, 16, pmkid);
8704         if (bssid)
8705                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid);
8706
8707         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
8708  nla_put_failure:
8709         nlmsg_free(msg);
8710         return -ENOBUFS;
8711 }
8712
8713
8714 static int nl80211_add_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
8715 {
8716         struct i802_bss *bss = priv;
8717         wpa_printf(MSG_DEBUG, "nl80211: Add PMKID for " MACSTR, MAC2STR(bssid));
8718         return nl80211_pmkid(bss, NL80211_CMD_SET_PMKSA, bssid, pmkid);
8719 }
8720
8721
8722 static int nl80211_remove_pmkid(void *priv, const u8 *bssid, const u8 *pmkid)
8723 {
8724         struct i802_bss *bss = priv;
8725         wpa_printf(MSG_DEBUG, "nl80211: Delete PMKID for " MACSTR,
8726                    MAC2STR(bssid));
8727         return nl80211_pmkid(bss, NL80211_CMD_DEL_PMKSA, bssid, pmkid);
8728 }
8729
8730
8731 static int nl80211_flush_pmkid(void *priv)
8732 {
8733         struct i802_bss *bss = priv;
8734         wpa_printf(MSG_DEBUG, "nl80211: Flush PMKIDs");
8735         return nl80211_pmkid(bss, NL80211_CMD_FLUSH_PMKSA, NULL, NULL);
8736 }
8737
8738
8739 static void nl80211_set_rekey_info(void *priv, const u8 *kek, const u8 *kck,
8740                                    const u8 *replay_ctr)
8741 {
8742         struct i802_bss *bss = priv;
8743         struct wpa_driver_nl80211_data *drv = bss->drv;
8744         struct nlattr *replay_nested;
8745         struct nl_msg *msg;
8746
8747         msg = nlmsg_alloc();
8748         if (!msg)
8749                 return;
8750
8751         nl80211_cmd(drv, msg, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
8752
8753         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
8754
8755         replay_nested = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
8756         if (!replay_nested)
8757                 goto nla_put_failure;
8758
8759         NLA_PUT(msg, NL80211_REKEY_DATA_KEK, NL80211_KEK_LEN, kek);
8760         NLA_PUT(msg, NL80211_REKEY_DATA_KCK, NL80211_KCK_LEN, kck);
8761         NLA_PUT(msg, NL80211_REKEY_DATA_REPLAY_CTR, NL80211_REPLAY_CTR_LEN,
8762                 replay_ctr);
8763
8764         nla_nest_end(msg, replay_nested);
8765
8766         send_and_recv_msgs(drv, msg, NULL, NULL);
8767         return;
8768  nla_put_failure:
8769         nlmsg_free(msg);
8770 }
8771
8772
8773 static void nl80211_send_null_frame(struct i802_bss *bss, const u8 *own_addr,
8774                                     const u8 *addr, int qos)
8775 {
8776         /* send data frame to poll STA and check whether
8777          * this frame is ACKed */
8778         struct {
8779                 struct ieee80211_hdr hdr;
8780                 u16 qos_ctl;
8781         } STRUCT_PACKED nulldata;
8782         size_t size;
8783
8784         /* Send data frame to poll STA and check whether this frame is ACKed */
8785
8786         os_memset(&nulldata, 0, sizeof(nulldata));
8787
8788         if (qos) {
8789                 nulldata.hdr.frame_control =
8790                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
8791                                      WLAN_FC_STYPE_QOS_NULL);
8792                 size = sizeof(nulldata);
8793         } else {
8794                 nulldata.hdr.frame_control =
8795                         IEEE80211_FC(WLAN_FC_TYPE_DATA,
8796                                      WLAN_FC_STYPE_NULLFUNC);
8797                 size = sizeof(struct ieee80211_hdr);
8798         }
8799
8800         nulldata.hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
8801         os_memcpy(nulldata.hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
8802         os_memcpy(nulldata.hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
8803         os_memcpy(nulldata.hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
8804
8805         if (wpa_driver_nl80211_send_mlme(bss, (u8 *) &nulldata, size, 0) < 0)
8806                 wpa_printf(MSG_DEBUG, "nl80211_send_null_frame: Failed to "
8807                            "send poll frame");
8808 }
8809
8810 static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
8811                                 int qos)
8812 {
8813         struct i802_bss *bss = priv;
8814         struct wpa_driver_nl80211_data *drv = bss->drv;
8815         struct nl_msg *msg;
8816
8817         if (!drv->poll_command_supported) {
8818                 nl80211_send_null_frame(bss, own_addr, addr, qos);
8819                 return;
8820         }
8821
8822         msg = nlmsg_alloc();
8823         if (!msg)
8824                 return;
8825
8826         nl80211_cmd(drv, msg, 0, NL80211_CMD_PROBE_CLIENT);
8827
8828         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
8829         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
8830
8831         send_and_recv_msgs(drv, msg, NULL, NULL);
8832         return;
8833  nla_put_failure:
8834         nlmsg_free(msg);
8835 }
8836
8837
8838 static int nl80211_set_power_save(struct i802_bss *bss, int enabled)
8839 {
8840         struct nl_msg *msg;
8841
8842         msg = nlmsg_alloc();
8843         if (!msg)
8844                 return -ENOMEM;
8845
8846         nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_SET_POWER_SAVE);
8847         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex);
8848         NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE,
8849                     enabled ? NL80211_PS_ENABLED : NL80211_PS_DISABLED);
8850         return send_and_recv_msgs(bss->drv, msg, NULL, NULL);
8851 nla_put_failure:
8852         nlmsg_free(msg);
8853         return -ENOBUFS;
8854 }
8855
8856
8857 static int nl80211_set_p2p_powersave(void *priv, int legacy_ps, int opp_ps,
8858                                      int ctwindow)
8859 {
8860         struct i802_bss *bss = priv;
8861
8862         wpa_printf(MSG_DEBUG, "nl80211: set_p2p_powersave (legacy_ps=%d "
8863                    "opp_ps=%d ctwindow=%d)", legacy_ps, opp_ps, ctwindow);
8864
8865         if (opp_ps != -1 || ctwindow != -1)
8866 #ifdef ANDROID_P2P
8867                 wpa_driver_set_p2p_ps(priv, legacy_ps, opp_ps, ctwindow);
8868 #else
8869                 return -1; /* Not yet supported */
8870 #endif
8871
8872         if (legacy_ps == -1)
8873                 return 0;
8874         if (legacy_ps != 0 && legacy_ps != 1)
8875                 return -1; /* Not yet supported */
8876
8877         return nl80211_set_power_save(bss, legacy_ps);
8878 }
8879
8880
8881 #ifdef CONFIG_TDLS
8882
8883 static int nl80211_send_tdls_mgmt(void *priv, const u8 *dst, u8 action_code,
8884                                   u8 dialog_token, u16 status_code,
8885                                   const u8 *buf, size_t len)
8886 {
8887         struct i802_bss *bss = priv;
8888         struct wpa_driver_nl80211_data *drv = bss->drv;
8889         struct nl_msg *msg;
8890
8891         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
8892                 return -EOPNOTSUPP;
8893
8894         if (!dst)
8895                 return -EINVAL;
8896
8897         msg = nlmsg_alloc();
8898         if (!msg)
8899                 return -ENOMEM;
8900
8901         nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_MGMT);
8902         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8903         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, dst);
8904         NLA_PUT_U8(msg, NL80211_ATTR_TDLS_ACTION, action_code);
8905         NLA_PUT_U8(msg, NL80211_ATTR_TDLS_DIALOG_TOKEN, dialog_token);
8906         NLA_PUT_U16(msg, NL80211_ATTR_STATUS_CODE, status_code);
8907         NLA_PUT(msg, NL80211_ATTR_IE, len, buf);
8908
8909         return send_and_recv_msgs(drv, msg, NULL, NULL);
8910
8911 nla_put_failure:
8912         nlmsg_free(msg);
8913         return -ENOBUFS;
8914 }
8915
8916
8917 static int nl80211_tdls_oper(void *priv, enum tdls_oper oper, const u8 *peer)
8918 {
8919         struct i802_bss *bss = priv;
8920         struct wpa_driver_nl80211_data *drv = bss->drv;
8921         struct nl_msg *msg;
8922         enum nl80211_tdls_operation nl80211_oper;
8923
8924         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT))
8925                 return -EOPNOTSUPP;
8926
8927         switch (oper) {
8928         case TDLS_DISCOVERY_REQ:
8929                 nl80211_oper = NL80211_TDLS_DISCOVERY_REQ;
8930                 break;
8931         case TDLS_SETUP:
8932                 nl80211_oper = NL80211_TDLS_SETUP;
8933                 break;
8934         case TDLS_TEARDOWN:
8935                 nl80211_oper = NL80211_TDLS_TEARDOWN;
8936                 break;
8937         case TDLS_ENABLE_LINK:
8938                 nl80211_oper = NL80211_TDLS_ENABLE_LINK;
8939                 break;
8940         case TDLS_DISABLE_LINK:
8941                 nl80211_oper = NL80211_TDLS_DISABLE_LINK;
8942                 break;
8943         case TDLS_ENABLE:
8944                 return 0;
8945         case TDLS_DISABLE:
8946                 return 0;
8947         default:
8948                 return -EINVAL;
8949         }
8950
8951         msg = nlmsg_alloc();
8952         if (!msg)
8953                 return -ENOMEM;
8954
8955         nl80211_cmd(drv, msg, 0, NL80211_CMD_TDLS_OPER);
8956         NLA_PUT_U8(msg, NL80211_ATTR_TDLS_OPERATION, nl80211_oper);
8957         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
8958         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, peer);
8959
8960         return send_and_recv_msgs(drv, msg, NULL, NULL);
8961
8962 nla_put_failure:
8963         nlmsg_free(msg);
8964         return -ENOBUFS;
8965 }
8966
8967 #endif /* CONFIG TDLS */
8968
8969
8970 #ifdef ANDROID
8971
8972 typedef struct android_wifi_priv_cmd {
8973         char *buf;
8974         int used_len;
8975         int total_len;
8976 } android_wifi_priv_cmd;
8977
8978 static int drv_errors = 0;
8979
8980 static void wpa_driver_send_hang_msg(struct wpa_driver_nl80211_data *drv)
8981 {
8982         drv_errors++;
8983         if (drv_errors > DRV_NUMBER_SEQUENTIAL_ERRORS) {
8984                 drv_errors = 0;
8985                 wpa_msg(drv->ctx, MSG_INFO, WPA_EVENT_DRIVER_STATE "HANGED");
8986         }
8987 }
8988
8989
8990 static int android_priv_cmd(struct i802_bss *bss, const char *cmd)
8991 {
8992         struct wpa_driver_nl80211_data *drv = bss->drv;
8993         struct ifreq ifr;
8994         android_wifi_priv_cmd priv_cmd;
8995         char buf[MAX_DRV_CMD_SIZE];
8996         int ret;
8997
8998         os_memset(&ifr, 0, sizeof(ifr));
8999         os_memset(&priv_cmd, 0, sizeof(priv_cmd));
9000         os_strlcpy(ifr.ifr_name, bss->ifname, IFNAMSIZ);
9001
9002         os_memset(buf, 0, sizeof(buf));
9003         os_strlcpy(buf, cmd, sizeof(buf));
9004
9005         priv_cmd.buf = buf;
9006         priv_cmd.used_len = sizeof(buf);
9007         priv_cmd.total_len = sizeof(buf);
9008         ifr.ifr_data = &priv_cmd;
9009
9010         ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr);
9011         if (ret < 0) {
9012                 wpa_printf(MSG_ERROR, "%s: failed to issue private commands",
9013                            __func__);
9014                 wpa_driver_send_hang_msg(drv);
9015                 return ret;
9016         }
9017
9018         drv_errors = 0;
9019         return 0;
9020 }
9021
9022
9023 static int android_pno_start(struct i802_bss *bss,
9024                              struct wpa_driver_scan_params *params)
9025 {
9026         struct wpa_driver_nl80211_data *drv = bss->drv;
9027         struct ifreq ifr;
9028         android_wifi_priv_cmd priv_cmd;
9029         int ret = 0, i = 0, bp;
9030         char buf[WEXT_PNO_MAX_COMMAND_SIZE];
9031
9032         bp = WEXT_PNOSETUP_HEADER_SIZE;
9033         os_memcpy(buf, WEXT_PNOSETUP_HEADER, bp);
9034         buf[bp++] = WEXT_PNO_TLV_PREFIX;
9035         buf[bp++] = WEXT_PNO_TLV_VERSION;
9036         buf[bp++] = WEXT_PNO_TLV_SUBVERSION;
9037         buf[bp++] = WEXT_PNO_TLV_RESERVED;
9038
9039         while (i < WEXT_PNO_AMOUNT && (size_t) i < params->num_ssids) {
9040                 /* Check that there is enough space needed for 1 more SSID, the
9041                  * other sections and null termination */
9042                 if ((bp + WEXT_PNO_SSID_HEADER_SIZE + MAX_SSID_LEN +
9043                      WEXT_PNO_NONSSID_SECTIONS_SIZE + 1) >= (int) sizeof(buf))
9044                         break;
9045                 wpa_hexdump_ascii(MSG_DEBUG, "For PNO Scan",
9046                                   params->ssids[i].ssid,
9047                                   params->ssids[i].ssid_len);
9048                 buf[bp++] = WEXT_PNO_SSID_SECTION;
9049                 buf[bp++] = params->ssids[i].ssid_len;
9050                 os_memcpy(&buf[bp], params->ssids[i].ssid,
9051                           params->ssids[i].ssid_len);
9052                 bp += params->ssids[i].ssid_len;
9053                 i++;
9054         }
9055
9056         buf[bp++] = WEXT_PNO_SCAN_INTERVAL_SECTION;
9057         os_snprintf(&buf[bp], WEXT_PNO_SCAN_INTERVAL_LENGTH + 1, "%x",
9058                     WEXT_PNO_SCAN_INTERVAL);
9059         bp += WEXT_PNO_SCAN_INTERVAL_LENGTH;
9060
9061         buf[bp++] = WEXT_PNO_REPEAT_SECTION;
9062         os_snprintf(&buf[bp], WEXT_PNO_REPEAT_LENGTH + 1, "%x",
9063                     WEXT_PNO_REPEAT);
9064         bp += WEXT_PNO_REPEAT_LENGTH;
9065
9066         buf[bp++] = WEXT_PNO_MAX_REPEAT_SECTION;
9067         os_snprintf(&buf[bp], WEXT_PNO_MAX_REPEAT_LENGTH + 1, "%x",
9068                     WEXT_PNO_MAX_REPEAT);
9069         bp += WEXT_PNO_MAX_REPEAT_LENGTH + 1;
9070
9071         memset(&ifr, 0, sizeof(ifr));
9072         memset(&priv_cmd, 0, sizeof(priv_cmd));
9073         os_strncpy(ifr.ifr_name, bss->ifname, IFNAMSIZ);
9074
9075         priv_cmd.buf = buf;
9076         priv_cmd.used_len = bp;
9077         priv_cmd.total_len = bp;
9078         ifr.ifr_data = &priv_cmd;
9079
9080         ret = ioctl(drv->global->ioctl_sock, SIOCDEVPRIVATE + 1, &ifr);
9081
9082         if (ret < 0) {
9083                 wpa_printf(MSG_ERROR, "ioctl[SIOCSIWPRIV] (pnosetup): %d",
9084                            ret);
9085                 wpa_driver_send_hang_msg(drv);
9086                 return ret;
9087         }
9088
9089         drv_errors = 0;
9090
9091         return android_priv_cmd(bss, "PNOFORCE 1");
9092 }
9093
9094
9095 static int android_pno_stop(struct i802_bss *bss)
9096 {
9097         return android_priv_cmd(bss, "PNOFORCE 0");
9098 }
9099
9100 #endif /* ANDROID */
9101
9102
9103 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
9104         .name = "nl80211",
9105         .desc = "Linux nl80211/cfg80211",
9106         .get_bssid = wpa_driver_nl80211_get_bssid,
9107         .get_ssid = wpa_driver_nl80211_get_ssid,
9108         .set_key = wpa_driver_nl80211_set_key,
9109         .scan2 = wpa_driver_nl80211_scan,
9110         .sched_scan = wpa_driver_nl80211_sched_scan,
9111         .stop_sched_scan = wpa_driver_nl80211_stop_sched_scan,
9112         .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
9113         .deauthenticate = wpa_driver_nl80211_deauthenticate,
9114         .disassociate = wpa_driver_nl80211_disassociate,
9115         .authenticate = wpa_driver_nl80211_authenticate,
9116         .associate = wpa_driver_nl80211_associate,
9117         .global_init = nl80211_global_init,
9118         .global_deinit = nl80211_global_deinit,
9119         .init2 = wpa_driver_nl80211_init,
9120         .deinit = wpa_driver_nl80211_deinit,
9121         .get_capa = wpa_driver_nl80211_get_capa,
9122         .set_operstate = wpa_driver_nl80211_set_operstate,
9123         .set_supp_port = wpa_driver_nl80211_set_supp_port,
9124         .set_country = wpa_driver_nl80211_set_country,
9125         .set_ap = wpa_driver_nl80211_set_ap,
9126         .if_add = wpa_driver_nl80211_if_add,
9127         .if_remove = wpa_driver_nl80211_if_remove,
9128         .send_mlme = wpa_driver_nl80211_send_mlme,
9129         .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
9130         .sta_add = wpa_driver_nl80211_sta_add,
9131         .sta_remove = wpa_driver_nl80211_sta_remove,
9132         .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
9133         .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
9134 #ifdef HOSTAPD
9135         .hapd_init = i802_init,
9136         .hapd_deinit = i802_deinit,
9137         .set_wds_sta = i802_set_wds_sta,
9138 #endif /* HOSTAPD */
9139 #if defined(HOSTAPD) || defined(CONFIG_AP)
9140         .get_seqnum = i802_get_seqnum,
9141         .flush = i802_flush,
9142         .read_sta_data = i802_read_sta_data,
9143         .get_inact_sec = i802_get_inact_sec,
9144         .sta_clear_stats = i802_sta_clear_stats,
9145         .set_rts = i802_set_rts,
9146         .set_frag = i802_set_frag,
9147         .set_tx_queue_params = i802_set_tx_queue_params,
9148         .set_sta_vlan = i802_set_sta_vlan,
9149         .sta_deauth = i802_sta_deauth,
9150         .sta_disassoc = i802_sta_disassoc,
9151 #endif /* HOSTAPD || CONFIG_AP */
9152         .set_freq = i802_set_freq,
9153         .send_action = wpa_driver_nl80211_send_action,
9154         .send_action_cancel_wait = wpa_driver_nl80211_send_action_cancel_wait,
9155         .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
9156         .cancel_remain_on_channel =
9157         wpa_driver_nl80211_cancel_remain_on_channel,
9158         .probe_req_report = wpa_driver_nl80211_probe_req_report,
9159         .deinit_ap = wpa_driver_nl80211_deinit_ap,
9160         .deinit_p2p_cli = wpa_driver_nl80211_deinit_p2p_cli,
9161         .resume = wpa_driver_nl80211_resume,
9162         .send_ft_action = nl80211_send_ft_action,
9163         .signal_monitor = nl80211_signal_monitor,
9164         .signal_poll = nl80211_signal_poll,
9165         .send_frame = nl80211_send_frame,
9166         .shared_freq = wpa_driver_nl80211_shared_freq,
9167         .set_param = nl80211_set_param,
9168         .get_radio_name = nl80211_get_radio_name,
9169         .add_pmkid = nl80211_add_pmkid,
9170         .remove_pmkid = nl80211_remove_pmkid,
9171         .flush_pmkid = nl80211_flush_pmkid,
9172         .set_rekey_info = nl80211_set_rekey_info,
9173         .poll_client = nl80211_poll_client,
9174         .set_p2p_powersave = nl80211_set_p2p_powersave,
9175 #ifdef CONFIG_TDLS
9176         .send_tdls_mgmt = nl80211_send_tdls_mgmt,
9177         .tdls_oper = nl80211_tdls_oper,
9178 #endif /* CONFIG_TDLS */
9179 #ifdef ANDROID_P2P
9180         .set_noa = wpa_driver_set_p2p_noa,
9181         .get_noa = wpa_driver_get_p2p_noa,
9182         .set_ap_wps_ie = wpa_driver_set_ap_wps_p2p_ie,
9183 #endif
9184 #ifdef ANDROID
9185         .driver_cmd = wpa_driver_nl80211_driver_cmd,
9186 #endif
9187 };