src/drivers/driver_madwifi.c

   1 /*
   2  * WPA Supplicant - driver interaction with MADWIFI 802.11 driver
   3  * Copyright (c) 2004, Sam Leffler <sam@errno.com>
   4  * Copyright (c) 2004, Video54 Technologies
   5  * Copyright (c) 2004-2007, Jouni Malinen <j@w1.fi>
   6  *
   7  * This software may be distributed under the terms of the BSD license.
   8  * See README for more details.
   9  *
  10  * While this driver wrapper supports both AP (hostapd) and station
  11  * (wpa_supplicant) operations, the station side is deprecated and
  12  * driver_wext.c should be used instead. This driver wrapper should only be
  13  * used with hostapd for AP mode functionality.
  14  */
  15
  16 #include "includes.h"
  17 #include <sys/ioctl.h>
  18
  19 #include "common.h"
  20 #include "driver.h"
  21 #include "driver_wext.h"
  22 #include "eloop.h"
  23 #include "common/ieee802_11_defs.h"
  24 #include "linux_wext.h"
  25
  26 /*
  27  * Avoid conflicts with wpa_supplicant definitions by undefining a definition.
  28  */
  29 #undef WME_OUI_TYPE
  30
  31 #include <include/compat.h>
  32 #include <net80211/ieee80211.h>
  33 #ifdef WME_NUM_AC
  34 /* Assume this is built against BSD branch of madwifi driver. */
  35 #define MADWIFI_BSD
  36 #include <net80211/_ieee80211.h>
  37 #endif /* WME_NUM_AC */
  38 #include <net80211/ieee80211_crypto.h>
  39 #include <net80211/ieee80211_ioctl.h>
  40
  41 #ifdef CONFIG_WPS
  42 #ifdef IEEE80211_IOCTL_FILTERFRAME
  43 #include <netpacket/packet.h>
  44
  45 #ifndef ETH_P_80211_RAW
  46 #define ETH_P_80211_RAW 0x0019
  47 #endif
  48 #endif /* IEEE80211_IOCTL_FILTERFRAME */
  49 #endif /* CONFIG_WPS */
  50
  51 /*
  52  * Avoid conflicts with hostapd definitions by undefining couple of defines
  53  * from madwifi header files.
  54  */
  55 #undef RSN_VERSION
  56 #undef WPA_VERSION
  57 #undef WPA_OUI_TYPE
  58 #undef WME_OUI_TYPE
  59
  60
  61 #ifdef IEEE80211_IOCTL_SETWMMPARAMS
  62 /* Assume this is built against madwifi-ng */
  63 #define MADWIFI_NG
  64 #endif /* IEEE80211_IOCTL_SETWMMPARAMS */
  65
  66 #define WPA_KEY_RSC_LEN 8
  67
  68 #include "priv_netlink.h"
  69 #include "netlink.h"
  70 #include "linux_ioctl.h"
  71 #include "l2_packet/l2_packet.h"
  72
  73
  74 struct madwifi_driver_data {
  75         struct hostapd_data *hapd;              /* back pointer */
  76
  77         char    iface[IFNAMSIZ + 1];
  78         int     ifindex;
  79         struct l2_packet_data *sock_xmit;       /* raw packet xmit socket */
  80         struct l2_packet_data *sock_recv;       /* raw packet recv socket */
  81         int     ioctl_sock;                     /* socket for ioctl() use */
  82         struct netlink_data *netlink;
  83         int     we_version;
  84         u8      acct_mac[ETH_ALEN];
  85         struct hostap_sta_driver_data acct_data;
  86
  87         struct l2_packet_data *sock_raw; /* raw 802.11 management frames */
  88 };
  89
  90 static int madwifi_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
  91                               int reason_code);
  92
  93 static int
  94 set80211priv(struct madwifi_driver_data *drv, int op, void *data, int len)
  95 {
  96         struct iwreq iwr;
  97         int do_inline = len < IFNAMSIZ;
  98
  99         memset(&iwr, 0, sizeof(iwr));
 100         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
 101 #ifdef IEEE80211_IOCTL_FILTERFRAME
 102         /* FILTERFRAME must be NOT inline, regardless of size. */
 103         if (op == IEEE80211_IOCTL_FILTERFRAME)
 104                 do_inline = 0;
 105 #endif /* IEEE80211_IOCTL_FILTERFRAME */
 106         if (op == IEEE80211_IOCTL_SET_APPIEBUF)
 107                 do_inline = 0;
 108         if (do_inline) {
 109                 /*
 110                  * Argument data fits inline; put it there.
 111                  */
 112                 memcpy(iwr.u.name, data, len);
 113         } else {
 114                 /*
 115                  * Argument data too big for inline transfer; setup a
 116                  * parameter block instead; the kernel will transfer
 117                  * the data for the driver.
 118                  */
 119                 iwr.u.data.pointer = data;
 120                 iwr.u.data.length = len;
 121         }
 122
 123         if (ioctl(drv->ioctl_sock, op, &iwr) < 0) {
 124 #ifdef MADWIFI_NG
 125                 int first = IEEE80211_IOCTL_SETPARAM;
 126                 static const char *opnames[] = {
 127                         "ioctl[IEEE80211_IOCTL_SETPARAM]",
 128                         "ioctl[IEEE80211_IOCTL_GETPARAM]",
 129                         "ioctl[IEEE80211_IOCTL_SETMODE]",
 130                         "ioctl[IEEE80211_IOCTL_GETMODE]",
 131                         "ioctl[IEEE80211_IOCTL_SETWMMPARAMS]",
 132                         "ioctl[IEEE80211_IOCTL_GETWMMPARAMS]",
 133                         "ioctl[IEEE80211_IOCTL_SETCHANLIST]",
 134                         "ioctl[IEEE80211_IOCTL_GETCHANLIST]",
 135                         "ioctl[IEEE80211_IOCTL_CHANSWITCH]",
 136                         "ioctl[IEEE80211_IOCTL_GET_APPIEBUF]",
 137                         "ioctl[IEEE80211_IOCTL_SET_APPIEBUF]",
 138                         "ioctl[IEEE80211_IOCTL_GETSCANRESULTS]",
 139                         "ioctl[IEEE80211_IOCTL_FILTERFRAME]",
 140                         "ioctl[IEEE80211_IOCTL_GETCHANINFO]",
 141                         "ioctl[IEEE80211_IOCTL_SETOPTIE]",
 142                         "ioctl[IEEE80211_IOCTL_GETOPTIE]",
 143                         "ioctl[IEEE80211_IOCTL_SETMLME]",
 144                         NULL,
 145                         "ioctl[IEEE80211_IOCTL_SETKEY]",
 146                         NULL,
 147                         "ioctl[IEEE80211_IOCTL_DELKEY]",
 148                         NULL,
 149                         "ioctl[IEEE80211_IOCTL_ADDMAC]",
 150                         NULL,
 151                         "ioctl[IEEE80211_IOCTL_DELMAC]",
 152                         NULL,
 153                         "ioctl[IEEE80211_IOCTL_WDSMAC]",
 154                         NULL,
 155                         "ioctl[IEEE80211_IOCTL_WDSDELMAC]",
 156                         NULL,
 157                         "ioctl[IEEE80211_IOCTL_KICKMAC]",
 158                 };
 159 #else /* MADWIFI_NG */
 160                 int first = IEEE80211_IOCTL_SETPARAM;
 161                 static const char *opnames[] = {
 162                         "ioctl[IEEE80211_IOCTL_SETPARAM]",
 163                         "ioctl[IEEE80211_IOCTL_GETPARAM]",
 164                         "ioctl[IEEE80211_IOCTL_SETKEY]",
 165                         "ioctl[SIOCIWFIRSTPRIV+3]",
 166                         "ioctl[IEEE80211_IOCTL_DELKEY]",
 167                         "ioctl[SIOCIWFIRSTPRIV+5]",
 168                         "ioctl[IEEE80211_IOCTL_SETMLME]",
 169                         "ioctl[SIOCIWFIRSTPRIV+7]",
 170                         "ioctl[IEEE80211_IOCTL_SETOPTIE]",
 171                         "ioctl[IEEE80211_IOCTL_GETOPTIE]",
 172                         "ioctl[IEEE80211_IOCTL_ADDMAC]",
 173                         "ioctl[SIOCIWFIRSTPRIV+11]",
 174                         "ioctl[IEEE80211_IOCTL_DELMAC]",
 175                         "ioctl[SIOCIWFIRSTPRIV+13]",
 176                         "ioctl[IEEE80211_IOCTL_CHANLIST]",
 177                         "ioctl[SIOCIWFIRSTPRIV+15]",
 178                         "ioctl[IEEE80211_IOCTL_GETRSN]",
 179                         "ioctl[SIOCIWFIRSTPRIV+17]",
 180                         "ioctl[IEEE80211_IOCTL_GETKEY]",
 181                 };
 182 #endif /* MADWIFI_NG */
 183                 int idx = op - first;
 184                 if (first <= op &&
 185                     idx < (int) (sizeof(opnames) / sizeof(opnames[0])) &&
 186                     opnames[idx])
 187                         perror(opnames[idx]);
 188                 else
 189                         perror("ioctl[unknown???]");
 190                 return -1;
 191         }
 192         return 0;
 193 }
 194
 195 static int
 196 set80211param(struct madwifi_driver_data *drv, int op, int arg)
 197 {
 198         struct iwreq iwr;
 199
 200         memset(&iwr, 0, sizeof(iwr));
 201         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
 202         iwr.u.mode = op;
 203         memcpy(iwr.u.name+sizeof(__u32), &arg, sizeof(arg));
 204
 205         if (ioctl(drv->ioctl_sock, IEEE80211_IOCTL_SETPARAM, &iwr) < 0) {
 206                 perror("ioctl[IEEE80211_IOCTL_SETPARAM]");
 207                 wpa_printf(MSG_DEBUG, "%s: Failed to set parameter (op %d "
 208                            "arg %d)", __func__, op, arg);
 209                 return -1;
 210         }
 211         return 0;
 212 }
 213
 214 #ifndef CONFIG_NO_STDOUT_DEBUG
 215 static const char *
 216 ether_sprintf(const u8 *addr)
 217 {
 218         static char buf[sizeof(MACSTR)];
 219
 220         if (addr != NULL)
 221                 snprintf(buf, sizeof(buf), MACSTR, MAC2STR(addr));
 222         else
 223                 snprintf(buf, sizeof(buf), MACSTR, 0,0,0,0,0,0);
 224         return buf;
 225 }
 226 #endif /* CONFIG_NO_STDOUT_DEBUG */
 227
 228 /*
 229  * Configure WPA parameters.
 230  */
 231 static int
 232 madwifi_configure_wpa(struct madwifi_driver_data *drv,
 233                       struct wpa_bss_params *params)
 234 {
 235         int v;
 236
 237         switch (params->wpa_group) {
 238         case WPA_CIPHER_CCMP:
 239                 v = IEEE80211_CIPHER_AES_CCM;
 240                 break;
 241         case WPA_CIPHER_TKIP:
 242                 v = IEEE80211_CIPHER_TKIP;
 243                 break;
 244         case WPA_CIPHER_WEP104:
 245                 v = IEEE80211_CIPHER_WEP;
 246                 break;
 247         case WPA_CIPHER_WEP40:
 248                 v = IEEE80211_CIPHER_WEP;
 249                 break;
 250         case WPA_CIPHER_NONE:
 251                 v = IEEE80211_CIPHER_NONE;
 252                 break;
 253         default:
 254                 wpa_printf(MSG_ERROR, "Unknown group key cipher %u",
 255                            params->wpa_group);
 256                 return -1;
 257         }
 258         wpa_printf(MSG_DEBUG, "%s: group key cipher=%d", __func__, v);
 259         if (set80211param(drv, IEEE80211_PARAM_MCASTCIPHER, v)) {
 260                 printf("Unable to set group key cipher to %u\n", v);
 261                 return -1;
 262         }
 263         if (v == IEEE80211_CIPHER_WEP) {
 264                 /* key length is done only for specific ciphers */
 265                 v = (params->wpa_group == WPA_CIPHER_WEP104 ? 13 : 5);
 266                 if (set80211param(drv, IEEE80211_PARAM_MCASTKEYLEN, v)) {
 267                         printf("Unable to set group key length to %u\n", v);
 268                         return -1;
 269                 }
 270         }
 271
 272         v = 0;
 273         if (params->wpa_pairwise & WPA_CIPHER_CCMP)
 274                 v |= 1<<IEEE80211_CIPHER_AES_CCM;
 275         if (params->wpa_pairwise & WPA_CIPHER_TKIP)
 276                 v |= 1<<IEEE80211_CIPHER_TKIP;
 277         if (params->wpa_pairwise & WPA_CIPHER_NONE)
 278                 v |= 1<<IEEE80211_CIPHER_NONE;
 279         wpa_printf(MSG_DEBUG, "%s: pairwise key ciphers=0x%x", __func__, v);
 280         if (set80211param(drv, IEEE80211_PARAM_UCASTCIPHERS, v)) {
 281                 printf("Unable to set pairwise key ciphers to 0x%x\n", v);
 282                 return -1;
 283         }
 284
 285         wpa_printf(MSG_DEBUG, "%s: key management algorithms=0x%x",
 286                    __func__, params->wpa_key_mgmt);
 287         if (set80211param(drv, IEEE80211_PARAM_KEYMGTALGS,
 288                           params->wpa_key_mgmt)) {
 289                 printf("Unable to set key management algorithms to 0x%x\n",
 290                         params->wpa_key_mgmt);
 291                 return -1;
 292         }
 293
 294         v = 0;
 295         if (params->rsn_preauth)
 296                 v |= BIT(0);
 297         wpa_printf(MSG_DEBUG, "%s: rsn capabilities=0x%x",
 298                    __func__, params->rsn_preauth);
 299         if (set80211param(drv, IEEE80211_PARAM_RSNCAPS, v)) {
 300                 printf("Unable to set RSN capabilities to 0x%x\n", v);
 301                 return -1;
 302         }
 303
 304         wpa_printf(MSG_DEBUG, "%s: enable WPA=0x%x", __func__, params->wpa);
 305         if (set80211param(drv, IEEE80211_PARAM_WPA, params->wpa)) {
 306                 printf("Unable to set WPA to %u\n", params->wpa);
 307                 return -1;
 308         }
 309         return 0;
 310 }
 311
 312 static int
 313 madwifi_set_ieee8021x(void *priv, struct wpa_bss_params *params)
 314 {
 315         struct madwifi_driver_data *drv = priv;
 316
 317         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, params->enabled);
 318
 319         if (!params->enabled) {
 320                 /* XXX restore state */
 321                 return set80211param(priv, IEEE80211_PARAM_AUTHMODE,
 322                         IEEE80211_AUTH_AUTO);
 323         }
 324         if (!params->wpa && !params->ieee802_1x) {
 325                 hostapd_logger(drv->hapd, NULL, HOSTAPD_MODULE_DRIVER,
 326                         HOSTAPD_LEVEL_WARNING, "No 802.1X or WPA enabled!");
 327                 return -1;
 328         }
 329         if (params->wpa && madwifi_configure_wpa(drv, params) != 0) {
 330                 hostapd_logger(drv->hapd, NULL, HOSTAPD_MODULE_DRIVER,
 331                         HOSTAPD_LEVEL_WARNING, "Error configuring WPA state!");
 332                 return -1;
 333         }
 334         if (set80211param(priv, IEEE80211_PARAM_AUTHMODE,
 335                 (params->wpa ? IEEE80211_AUTH_WPA : IEEE80211_AUTH_8021X))) {
 336                 hostapd_logger(drv->hapd, NULL, HOSTAPD_MODULE_DRIVER,
 337                         HOSTAPD_LEVEL_WARNING, "Error enabling WPA/802.1X!");
 338                 return -1;
 339         }
 340
 341         return 0;
 342 }
 343
 344 static int
 345 madwifi_set_privacy(void *priv, int enabled)
 346 {
 347         struct madwifi_driver_data *drv = priv;
 348
 349         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
 350
 351         return set80211param(drv, IEEE80211_PARAM_PRIVACY, enabled);
 352 }
 353
 354 static int
 355 madwifi_set_sta_authorized(void *priv, const u8 *addr, int authorized)
 356 {
 357         struct madwifi_driver_data *drv = priv;
 358         struct ieee80211req_mlme mlme;
 359         int ret;
 360
 361         wpa_printf(MSG_DEBUG, "%s: addr=%s authorized=%d",
 362                    __func__, ether_sprintf(addr), authorized);
 363
 364         if (authorized)
 365                 mlme.im_op = IEEE80211_MLME_AUTHORIZE;
 366         else
 367                 mlme.im_op = IEEE80211_MLME_UNAUTHORIZE;
 368         mlme.im_reason = 0;
 369         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 370         ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme));
 371         if (ret < 0) {
 372                 wpa_printf(MSG_DEBUG, "%s: Failed to %sauthorize STA " MACSTR,
 373                            __func__, authorized ? "" : "un", MAC2STR(addr));
 374         }
 375
 376         return ret;
 377 }
 378
 379 static int
 380 madwifi_sta_set_flags(void *priv, const u8 *addr,
 381                       int total_flags, int flags_or, int flags_and)
 382 {
 383         /* For now, only support setting Authorized flag */
 384         if (flags_or & WPA_STA_AUTHORIZED)
 385                 return madwifi_set_sta_authorized(priv, addr, 1);
 386         if (!(flags_and & WPA_STA_AUTHORIZED))
 387                 return madwifi_set_sta_authorized(priv, addr, 0);
 388         return 0;
 389 }
 390
 391 static int
 392 madwifi_del_key(void *priv, const u8 *addr, int key_idx)
 393 {
 394         struct madwifi_driver_data *drv = priv;
 395         struct ieee80211req_del_key wk;
 396         int ret;
 397
 398         wpa_printf(MSG_DEBUG, "%s: addr=%s key_idx=%d",
 399                    __func__, ether_sprintf(addr), key_idx);
 400
 401         memset(&wk, 0, sizeof(wk));
 402         if (addr != NULL) {
 403                 memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
 404                 wk.idk_keyix = (u8) IEEE80211_KEYIX_NONE;
 405         } else {
 406                 wk.idk_keyix = key_idx;
 407         }
 408
 409         ret = set80211priv(drv, IEEE80211_IOCTL_DELKEY, &wk, sizeof(wk));
 410         if (ret < 0) {
 411                 wpa_printf(MSG_DEBUG, "%s: Failed to delete key (addr %s"
 412                            " key_idx %d)", __func__, ether_sprintf(addr),
 413                            key_idx);
 414         }
 415
 416         return ret;
 417 }
 418
 419 static int
 420 wpa_driver_madwifi_set_key(const char *ifname, void *priv, enum wpa_alg alg,
 421                            const u8 *addr, int key_idx, int set_tx,
 422                            const u8 *seq, size_t seq_len,
 423                            const u8 *key, size_t key_len)
 424 {
 425         struct madwifi_driver_data *drv = priv;
 426         struct ieee80211req_key wk;
 427         u_int8_t cipher;
 428         int ret;
 429
 430         if (alg == WPA_ALG_NONE)
 431                 return madwifi_del_key(drv, addr, key_idx);
 432
 433         wpa_printf(MSG_DEBUG, "%s: alg=%d addr=%s key_idx=%d",
 434                    __func__, alg, ether_sprintf(addr), key_idx);
 435
 436         if (alg == WPA_ALG_WEP)
 437                 cipher = IEEE80211_CIPHER_WEP;
 438         else if (alg == WPA_ALG_TKIP)
 439                 cipher = IEEE80211_CIPHER_TKIP;
 440         else if (alg == WPA_ALG_CCMP)
 441                 cipher = IEEE80211_CIPHER_AES_CCM;
 442         else {
 443                 printf("%s: unknown/unsupported algorithm %d\n",
 444                         __func__, alg);
 445                 return -1;
 446         }
 447
 448         if (key_len > sizeof(wk.ik_keydata)) {
 449                 printf("%s: key length %lu too big\n", __func__,
 450                        (unsigned long) key_len);
 451                 return -3;
 452         }
 453
 454         memset(&wk, 0, sizeof(wk));
 455         wk.ik_type = cipher;
 456         wk.ik_flags = IEEE80211_KEY_RECV | IEEE80211_KEY_XMIT;
 457         if (addr == NULL || is_broadcast_ether_addr(addr)) {
 458                 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
 459                 wk.ik_keyix = key_idx;
 460                 wk.ik_flags |= IEEE80211_KEY_DEFAULT;
 461         } else {
 462                 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
 463                 wk.ik_keyix = IEEE80211_KEYIX_NONE;
 464         }
 465         wk.ik_keylen = key_len;
 466         memcpy(wk.ik_keydata, key, key_len);
 467
 468         ret = set80211priv(drv, IEEE80211_IOCTL_SETKEY, &wk, sizeof(wk));
 469         if (ret < 0) {
 470                 wpa_printf(MSG_DEBUG, "%s: Failed to set key (addr %s"
 471                            " key_idx %d alg %d key_len %lu set_tx %d)",
 472                            __func__, ether_sprintf(wk.ik_macaddr), key_idx,
 473                            alg, (unsigned long) key_len, set_tx);
 474         }
 475
 476         return ret;
 477 }
 478
 479
 480 static int
 481 madwifi_get_seqnum(const char *ifname, void *priv, const u8 *addr, int idx,
 482                    u8 *seq)
 483 {
 484         struct madwifi_driver_data *drv = priv;
 485         struct ieee80211req_key wk;
 486
 487         wpa_printf(MSG_DEBUG, "%s: addr=%s idx=%d",
 488                    __func__, ether_sprintf(addr), idx);
 489
 490         memset(&wk, 0, sizeof(wk));
 491         if (addr == NULL)
 492                 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
 493         else
 494                 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
 495         wk.ik_keyix = idx;
 496
 497         if (set80211priv(drv, IEEE80211_IOCTL_GETKEY, &wk, sizeof(wk))) {
 498                 wpa_printf(MSG_DEBUG, "%s: Failed to get encryption data "
 499                            "(addr " MACSTR " key_idx %d)",
 500                            __func__, MAC2STR(wk.ik_macaddr), idx);
 501                 return -1;
 502         }
 503
 504 #ifdef WORDS_BIGENDIAN
 505         {
 506                 /*
 507                  * wk.ik_keytsc is in host byte order (big endian), need to
 508                  * swap it to match with the byte order used in WPA.
 509                  */
 510                 int i;
 511                 u8 tmp[WPA_KEY_RSC_LEN];
 512                 memcpy(tmp, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
 513                 for (i = 0; i < WPA_KEY_RSC_LEN; i++) {
 514                         seq[i] = tmp[WPA_KEY_RSC_LEN - i - 1];
 515                 }
 516         }
 517 #else /* WORDS_BIGENDIAN */
 518         memcpy(seq, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
 519 #endif /* WORDS_BIGENDIAN */
 520         return 0;
 521 }
 522
 523
 524 static int
 525 madwifi_flush(void *priv)
 526 {
 527 #ifdef MADWIFI_BSD
 528         u8 allsta[IEEE80211_ADDR_LEN];
 529         memset(allsta, 0xff, IEEE80211_ADDR_LEN);
 530         return madwifi_sta_deauth(priv, NULL, allsta,
 531                                   IEEE80211_REASON_AUTH_LEAVE);
 532 #else /* MADWIFI_BSD */
 533         return 0;               /* XXX */
 534 #endif /* MADWIFI_BSD */
 535 }
 536
 537
 538 static int
 539 madwifi_read_sta_driver_data(void *priv, struct hostap_sta_driver_data *data,
 540                              const u8 *addr)
 541 {
 542         struct madwifi_driver_data *drv = priv;
 543
 544 #ifdef MADWIFI_BSD
 545         struct ieee80211req_sta_stats stats;
 546
 547         memset(data, 0, sizeof(*data));
 548
 549         /*
 550          * Fetch statistics for station from the system.
 551          */
 552         memset(&stats, 0, sizeof(stats));
 553         memcpy(stats.is_u.macaddr, addr, IEEE80211_ADDR_LEN);
 554         if (set80211priv(drv,
 555 #ifdef MADWIFI_NG
 556                          IEEE80211_IOCTL_STA_STATS,
 557 #else /* MADWIFI_NG */
 558                          IEEE80211_IOCTL_GETSTASTATS,
 559 #endif /* MADWIFI_NG */
 560                          &stats, sizeof(stats))) {
 561                 wpa_printf(MSG_DEBUG, "%s: Failed to fetch STA stats (addr "
 562                            MACSTR ")", __func__, MAC2STR(addr));
 563                 if (memcmp(addr, drv->acct_mac, ETH_ALEN) == 0) {
 564                         memcpy(data, &drv->acct_data, sizeof(*data));
 565                         return 0;
 566                 }
 567
 568                 printf("Failed to get station stats information element.\n");
 569                 return -1;
 570         }
 571
 572         data->rx_packets = stats.is_stats.ns_rx_data;
 573         data->rx_bytes = stats.is_stats.ns_rx_bytes;
 574         data->tx_packets = stats.is_stats.ns_tx_data;
 575         data->tx_bytes = stats.is_stats.ns_tx_bytes;
 576         return 0;
 577
 578 #else /* MADWIFI_BSD */
 579
 580         char buf[1024], line[128], *pos;
 581         FILE *f;
 582         unsigned long val;
 583
 584         memset(data, 0, sizeof(*data));
 585         snprintf(buf, sizeof(buf), "/proc/net/madwifi/%s/" MACSTR,
 586                  drv->iface, MAC2STR(addr));
 587
 588         f = fopen(buf, "r");
 589         if (!f) {
 590                 if (memcmp(addr, drv->acct_mac, ETH_ALEN) != 0)
 591                         return -1;
 592                 memcpy(data, &drv->acct_data, sizeof(*data));
 593                 return 0;
 594         }
 595         /* Need to read proc file with in one piece, so use large enough
 596          * buffer. */
 597         setbuffer(f, buf, sizeof(buf));
 598
 599         while (fgets(line, sizeof(line), f)) {
 600                 pos = strchr(line, '=');
 601                 if (!pos)
 602                         continue;
 603                 *pos++ = '\0';
 604                 val = strtoul(pos, NULL, 10);
 605                 if (strcmp(line, "rx_packets") == 0)
 606                         data->rx_packets = val;
 607                 else if (strcmp(line, "tx_packets") == 0)
 608                         data->tx_packets = val;
 609                 else if (strcmp(line, "rx_bytes") == 0)
 610                         data->rx_bytes = val;
 611                 else if (strcmp(line, "tx_bytes") == 0)
 612                         data->tx_bytes = val;
 613         }
 614
 615         fclose(f);
 616
 617         return 0;
 618 #endif /* MADWIFI_BSD */
 619 }
 620
 621
 622 static int
 623 madwifi_sta_clear_stats(void *priv, const u8 *addr)
 624 {
 625 #if defined(MADWIFI_BSD) && defined(IEEE80211_MLME_CLEAR_STATS)
 626         struct madwifi_driver_data *drv = priv;
 627         struct ieee80211req_mlme mlme;
 628         int ret;
 629
 630         wpa_printf(MSG_DEBUG, "%s: addr=%s", __func__, ether_sprintf(addr));
 631
 632         mlme.im_op = IEEE80211_MLME_CLEAR_STATS;
 633         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 634         ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme,
 635                            sizeof(mlme));
 636         if (ret < 0) {
 637                 wpa_printf(MSG_DEBUG, "%s: Failed to clear STA stats (addr "
 638                            MACSTR ")", __func__, MAC2STR(addr));
 639         }
 640
 641         return ret;
 642 #else /* MADWIFI_BSD && IEEE80211_MLME_CLEAR_STATS */
 643         return 0; /* FIX */
 644 #endif /* MADWIFI_BSD && IEEE80211_MLME_CLEAR_STATS */
 645 }
 646
 647
 648 static int
 649 madwifi_set_opt_ie(void *priv, const u8 *ie, size_t ie_len)
 650 {
 651         /*
 652          * Do nothing; we setup parameters at startup that define the
 653          * contents of the beacon information element.
 654          */
 655         return 0;
 656 }
 657
 658 static int
 659 madwifi_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
 660                    int reason_code)
 661 {
 662         struct madwifi_driver_data *drv = priv;
 663         struct ieee80211req_mlme mlme;
 664         int ret;
 665
 666         wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
 667                    __func__, ether_sprintf(addr), reason_code);
 668
 669         mlme.im_op = IEEE80211_MLME_DEAUTH;
 670         mlme.im_reason = reason_code;
 671         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 672         ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme));
 673         if (ret < 0) {
 674                 wpa_printf(MSG_DEBUG, "%s: Failed to deauth STA (addr " MACSTR
 675                            " reason %d)",
 676                            __func__, MAC2STR(addr), reason_code);
 677         }
 678
 679         return ret;
 680 }
 681
 682 static int
 683 madwifi_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
 684                      int reason_code)
 685 {
 686         struct madwifi_driver_data *drv = priv;
 687         struct ieee80211req_mlme mlme;
 688         int ret;
 689
 690         wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
 691                    __func__, ether_sprintf(addr), reason_code);
 692
 693         mlme.im_op = IEEE80211_MLME_DISASSOC;
 694         mlme.im_reason = reason_code;
 695         memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
 696         ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme));
 697         if (ret < 0) {
 698                 wpa_printf(MSG_DEBUG, "%s: Failed to disassoc STA (addr "
 699                            MACSTR " reason %d)",
 700                            __func__, MAC2STR(addr), reason_code);
 701         }
 702
 703         return ret;
 704 }
 705
 706 #ifdef CONFIG_WPS
 707 #ifdef IEEE80211_IOCTL_FILTERFRAME
 708 static void madwifi_raw_receive(void *ctx, const u8 *src_addr, const u8 *buf,
 709                                 size_t len)
 710 {
 711         struct madwifi_driver_data *drv = ctx;
 712         const struct ieee80211_mgmt *mgmt;
 713         u16 fc;
 714         union wpa_event_data event;
 715
 716         /* Send Probe Request information to WPS processing */
 717
 718         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req))
 719                 return;
 720         mgmt = (const struct ieee80211_mgmt *) buf;
 721
 722         fc = le_to_host16(mgmt->frame_control);
 723         if (WLAN_FC_GET_TYPE(fc) != WLAN_FC_TYPE_MGMT ||
 724             WLAN_FC_GET_STYPE(fc) != WLAN_FC_STYPE_PROBE_REQ)
 725                 return;
 726
 727         os_memset(&event, 0, sizeof(event));
 728         event.rx_probe_req.sa = mgmt->sa;
 729         event.rx_probe_req.da = mgmt->da;
 730         event.rx_probe_req.bssid = mgmt->bssid;
 731         event.rx_probe_req.ie = mgmt->u.probe_req.variable;
 732         event.rx_probe_req.ie_len =
 733                 len - (IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req));
 734         wpa_supplicant_event(drv->hapd, EVENT_RX_PROBE_REQ, &event);
 735 }
 736 #endif /* IEEE80211_IOCTL_FILTERFRAME */
 737 #endif /* CONFIG_WPS */
 738
 739 static int madwifi_receive_probe_req(struct madwifi_driver_data *drv)
 740 {
 741         int ret = 0;
 742 #ifdef CONFIG_WPS
 743 #ifdef IEEE80211_IOCTL_FILTERFRAME
 744         struct ieee80211req_set_filter filt;
 745
 746         wpa_printf(MSG_DEBUG, "%s Enter", __func__);
 747         filt.app_filterype = IEEE80211_FILTER_TYPE_PROBE_REQ;
 748
 749         ret = set80211priv(drv, IEEE80211_IOCTL_FILTERFRAME, &filt,
 750                            sizeof(struct ieee80211req_set_filter));
 751         if (ret)
 752                 return ret;
 753
 754         drv->sock_raw = l2_packet_init(drv->iface, NULL, ETH_P_80211_RAW,
 755                                        madwifi_raw_receive, drv, 1);
 756         if (drv->sock_raw == NULL)
 757                 return -1;
 758 #endif /* IEEE80211_IOCTL_FILTERFRAME */
 759 #endif /* CONFIG_WPS */
 760         return ret;
 761 }
 762
 763 #ifdef CONFIG_WPS
 764 static int
 765 madwifi_set_wps_ie(void *priv, const u8 *ie, size_t len, u32 frametype)
 766 {
 767         struct madwifi_driver_data *drv = priv;
 768         u8 buf[256];
 769         struct ieee80211req_getset_appiebuf *beac_ie;
 770
 771         wpa_printf(MSG_DEBUG, "%s buflen = %lu", __func__,
 772                    (unsigned long) len);
 773
 774         beac_ie = (struct ieee80211req_getset_appiebuf *) buf;
 775         beac_ie->app_frmtype = frametype;
 776         beac_ie->app_buflen = len;
 777         memcpy(&(beac_ie->app_buf[0]), ie, len);
 778
 779         return set80211priv(drv, IEEE80211_IOCTL_SET_APPIEBUF, beac_ie,
 780                             sizeof(struct ieee80211req_getset_appiebuf) + len);
 781 }
 782
 783 static int
 784 madwifi_set_ap_wps_ie(void *priv, const struct wpabuf *beacon,
 785                       const struct wpabuf *proberesp,
 786                       const struct wpabuf *assocresp)
 787 {
 788         if (madwifi_set_wps_ie(priv, beacon ? wpabuf_head(beacon) : NULL,
 789                                beacon ? wpabuf_len(beacon) : 0,
 790                                IEEE80211_APPIE_FRAME_BEACON) < 0)
 791                 return -1;
 792         return madwifi_set_wps_ie(priv,
 793                                   proberesp ? wpabuf_head(proberesp) : NULL,
 794                                   proberesp ? wpabuf_len(proberesp) : 0,
 795                                   IEEE80211_APPIE_FRAME_PROBE_RESP);
 796 }
 797 #else /* CONFIG_WPS */
 798 #define madwifi_set_ap_wps_ie NULL
 799 #endif /* CONFIG_WPS */
 800
 801 static int madwifi_set_freq(void *priv, struct hostapd_freq_params *freq)
 802 {
 803         struct madwifi_driver_data *drv = priv;
 804         struct iwreq iwr;
 805
 806         os_memset(&iwr, 0, sizeof(iwr));
 807         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
 808         iwr.u.freq.m = freq->channel;
 809         iwr.u.freq.e = 0;
 810
 811         if (ioctl(drv->ioctl_sock, SIOCSIWFREQ, &iwr) < 0) {
 812                 perror("ioctl[SIOCSIWFREQ]");
 813                 return -1;
 814         }
 815
 816         return 0;
 817 }
 818
 819 static void
 820 madwifi_new_sta(struct madwifi_driver_data *drv, u8 addr[IEEE80211_ADDR_LEN])
 821 {
 822         struct hostapd_data *hapd = drv->hapd;
 823         struct ieee80211req_wpaie ie;
 824         int ielen = 0;
 825         u8 *iebuf = NULL;
 826
 827         /*
 828          * Fetch negotiated WPA/RSN parameters from the system.
 829          */
 830         memset(&ie, 0, sizeof(ie));
 831         memcpy(ie.wpa_macaddr, addr, IEEE80211_ADDR_LEN);
 832         if (set80211priv(drv, IEEE80211_IOCTL_GETWPAIE, &ie, sizeof(ie))) {
 833                 wpa_printf(MSG_DEBUG, "%s: Failed to get WPA/RSN IE",
 834                            __func__);
 835                 goto no_ie;
 836         }
 837         wpa_hexdump(MSG_MSGDUMP, "madwifi req WPA IE",
 838                     ie.wpa_ie, IEEE80211_MAX_OPT_IE);
 839         iebuf = ie.wpa_ie;
 840         /* madwifi seems to return some random data if WPA/RSN IE is not set.
 841          * Assume the IE was not included if the IE type is unknown. */
 842         if (iebuf[0] != WLAN_EID_VENDOR_SPECIFIC)
 843                 iebuf[1] = 0;
 844 #ifdef MADWIFI_NG
 845         wpa_hexdump(MSG_MSGDUMP, "madwifi req RSN IE",
 846                     ie.rsn_ie, IEEE80211_MAX_OPT_IE);
 847         if (iebuf[1] == 0 && ie.rsn_ie[1] > 0) {
 848                 /* madwifi-ng svn #1453 added rsn_ie. Use it, if wpa_ie was not
 849                  * set. This is needed for WPA2. */
 850                 iebuf = ie.rsn_ie;
 851                 if (iebuf[0] != WLAN_EID_RSN)
 852                         iebuf[1] = 0;
 853         }
 854 #endif /* MADWIFI_NG */
 855
 856         ielen = iebuf[1];
 857         if (ielen == 0)
 858                 iebuf = NULL;
 859         else
 860                 ielen += 2;
 861
 862 no_ie:
 863         drv_event_assoc(hapd, addr, iebuf, ielen, 0);
 864
 865         if (memcmp(addr, drv->acct_mac, ETH_ALEN) == 0) {
 866                 /* Cached accounting data is not valid anymore. */
 867                 memset(drv->acct_mac, 0, ETH_ALEN);
 868                 memset(&drv->acct_data, 0, sizeof(drv->acct_data));
 869         }
 870 }
 871
 872 static void
 873 madwifi_wireless_event_wireless_custom(struct madwifi_driver_data *drv,
 874                                        char *custom)
 875 {
 876         wpa_printf(MSG_DEBUG, "Custom wireless event: '%s'", custom);
 877
 878         if (strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
 879                 char *pos;
 880                 u8 addr[ETH_ALEN];
 881                 pos = strstr(custom, "addr=");
 882                 if (pos == NULL) {
 883                         wpa_printf(MSG_DEBUG,
 884                                    "MLME-MICHAELMICFAILURE.indication "
 885                                    "without sender address ignored");
 886                         return;
 887                 }
 888                 pos += 5;
 889                 if (hwaddr_aton(pos, addr) == 0) {
 890                         union wpa_event_data data;
 891                         os_memset(&data, 0, sizeof(data));
 892                         data.michael_mic_failure.unicast = 1;
 893                         data.michael_mic_failure.src = addr;
 894                         wpa_supplicant_event(drv->hapd,
 895                                              EVENT_MICHAEL_MIC_FAILURE, &data);
 896                 } else {
 897                         wpa_printf(MSG_DEBUG,
 898                                    "MLME-MICHAELMICFAILURE.indication "
 899                                    "with invalid MAC address");
 900                 }
 901         } else if (strncmp(custom, "STA-TRAFFIC-STAT", 16) == 0) {
 902                 char *key, *value;
 903                 u32 val;
 904                 key = custom;
 905                 while ((key = strchr(key, '\n')) != NULL) {
 906                         key++;
 907                         value = strchr(key, '=');
 908                         if (value == NULL)
 909                                 continue;
 910                         *value++ = '\0';
 911                         val = strtoul(value, NULL, 10);
 912                         if (strcmp(key, "mac") == 0)
 913                                 hwaddr_aton(value, drv->acct_mac);
 914                         else if (strcmp(key, "rx_packets") == 0)
 915                                 drv->acct_data.rx_packets = val;
 916                         else if (strcmp(key, "tx_packets") == 0)
 917                                 drv->acct_data.tx_packets = val;
 918                         else if (strcmp(key, "rx_bytes") == 0)
 919                                 drv->acct_data.rx_bytes = val;
 920                         else if (strcmp(key, "tx_bytes") == 0)
 921                                 drv->acct_data.tx_bytes = val;
 922                         key = value;
 923                 }
 924         }
 925 }
 926
 927 static void
 928 madwifi_wireless_event_wireless(struct madwifi_driver_data *drv,
 929                                             char *data, int len)
 930 {
 931         struct iw_event iwe_buf, *iwe = &iwe_buf;
 932         char *pos, *end, *custom, *buf;
 933
 934         pos = data;
 935         end = data + len;
 936
 937         while (pos + IW_EV_LCP_LEN <= end) {
 938                 /* Event data may be unaligned, so make a local, aligned copy
 939                  * before processing. */
 940                 memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
 941                 wpa_printf(MSG_MSGDUMP, "Wireless event: cmd=0x%x len=%d",
 942                            iwe->cmd, iwe->len);
 943                 if (iwe->len <= IW_EV_LCP_LEN)
 944                         return;
 945
 946                 custom = pos + IW_EV_POINT_LEN;
 947                 if (drv->we_version > 18 &&
 948                     (iwe->cmd == IWEVMICHAELMICFAILURE ||
 949                      iwe->cmd == IWEVCUSTOM)) {
 950                         /* WE-19 removed the pointer from struct iw_point */
 951                         char *dpos = (char *) &iwe_buf.u.data.length;
 952                         int dlen = dpos - (char *) &iwe_buf;
 953                         memcpy(dpos, pos + IW_EV_LCP_LEN,
 954                                sizeof(struct iw_event) - dlen);
 955                 } else {
 956                         memcpy(&iwe_buf, pos, sizeof(struct iw_event));
 957                         custom += IW_EV_POINT_OFF;
 958                 }
 959
 960                 switch (iwe->cmd) {
 961                 case IWEVEXPIRED:
 962                         drv_event_disassoc(drv->hapd,
 963                                            (u8 *) iwe->u.addr.sa_data);
 964                         break;
 965                 case IWEVREGISTERED:
 966                         madwifi_new_sta(drv, (u8 *) iwe->u.addr.sa_data);
 967                         break;
 968                 case IWEVCUSTOM:
 969                         if (custom + iwe->u.data.length > end)
 970                                 return;
 971                         buf = malloc(iwe->u.data.length + 1);
 972                         if (buf == NULL)
 973                                 return;         /* XXX */
 974                         memcpy(buf, custom, iwe->u.data.length);
 975                         buf[iwe->u.data.length] = '\0';
 976                         madwifi_wireless_event_wireless_custom(drv, buf);
 977                         free(buf);
 978                         break;
 979                 }
 980
 981                 pos += iwe->len;
 982         }
 983 }
 984
 985
 986 static void
 987 madwifi_wireless_event_rtm_newlink(void *ctx, struct ifinfomsg *ifi,
 988                                    u8 *buf, size_t len)
 989 {
 990         struct madwifi_driver_data *drv = ctx;
 991         int attrlen, rta_len;
 992         struct rtattr *attr;
 993
 994         if (ifi->ifi_index != drv->ifindex)
 995                 return;
 996
 997         attrlen = len;
 998         attr = (struct rtattr *) buf;
 999
1000         rta_len = RTA_ALIGN(sizeof(struct rtattr));
1001         while (RTA_OK(attr, attrlen)) {
1002                 if (attr->rta_type == IFLA_WIRELESS) {
1003                         madwifi_wireless_event_wireless(
1004                                 drv, ((char *) attr) + rta_len,
1005                                 attr->rta_len - rta_len);
1006                 }
1007                 attr = RTA_NEXT(attr, attrlen);
1008         }
1009 }
1010
1011
1012 static int
1013 madwifi_get_we_version(struct madwifi_driver_data *drv)
1014 {
1015         struct iw_range *range;
1016         struct iwreq iwr;
1017         int minlen;
1018         size_t buflen;
1019
1020         drv->we_version = 0;
1021
1022         /*
1023          * Use larger buffer than struct iw_range in order to allow the
1024          * structure to grow in the future.
1025          */
1026         buflen = sizeof(struct iw_range) + 500;
1027         range = os_zalloc(buflen);
1028         if (range == NULL)
1029                 return -1;
1030
1031         memset(&iwr, 0, sizeof(iwr));
1032         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1033         iwr.u.data.pointer = (caddr_t) range;
1034         iwr.u.data.length = buflen;
1035
1036         minlen = ((char *) &range->enc_capa) - (char *) range +
1037                 sizeof(range->enc_capa);
1038
1039         if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
1040                 perror("ioctl[SIOCGIWRANGE]");
1041                 free(range);
1042                 return -1;
1043         } else if (iwr.u.data.length >= minlen &&
1044                    range->we_version_compiled >= 18) {
1045                 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
1046                            "WE(source)=%d enc_capa=0x%x",
1047                            range->we_version_compiled,
1048                            range->we_version_source,
1049                            range->enc_capa);
1050                 drv->we_version = range->we_version_compiled;
1051         }
1052
1053         free(range);
1054         return 0;
1055 }
1056
1057
1058 static int
1059 madwifi_wireless_event_init(struct madwifi_driver_data *drv)
1060 {
1061         struct netlink_config *cfg;
1062
1063         madwifi_get_we_version(drv);
1064
1065         cfg = os_zalloc(sizeof(*cfg));
1066         if (cfg == NULL)
1067                 return -1;
1068         cfg->ctx = drv;
1069         cfg->newlink_cb = madwifi_wireless_event_rtm_newlink;
1070         drv->netlink = netlink_init(cfg);
1071         if (drv->netlink == NULL) {
1072                 os_free(cfg);
1073                 return -1;
1074         }
1075
1076         return 0;
1077 }
1078
1079
1080 static int
1081 madwifi_send_eapol(void *priv, const u8 *addr, const u8 *data, size_t data_len,
1082                    int encrypt, const u8 *own_addr, u32 flags)
1083 {
1084         struct madwifi_driver_data *drv = priv;
1085         unsigned char buf[3000];
1086         unsigned char *bp = buf;
1087         struct l2_ethhdr *eth;
1088         size_t len;
1089         int status;
1090
1091         /*
1092          * Prepend the Ethernet header.  If the caller left us
1093          * space at the front we could just insert it but since
1094          * we don't know we copy to a local buffer.  Given the frequency
1095          * and size of frames this probably doesn't matter.
1096          */
1097         len = data_len + sizeof(struct l2_ethhdr);
1098         if (len > sizeof(buf)) {
1099                 bp = malloc(len);
1100                 if (bp == NULL) {
1101                         printf("EAPOL frame discarded, cannot malloc temp "
1102                                "buffer of size %lu!\n", (unsigned long) len);
1103                         return -1;
1104                 }
1105         }
1106         eth = (struct l2_ethhdr *) bp;
1107         memcpy(eth->h_dest, addr, ETH_ALEN);
1108         memcpy(eth->h_source, own_addr, ETH_ALEN);
1109         eth->h_proto = host_to_be16(ETH_P_EAPOL);
1110         memcpy(eth+1, data, data_len);
1111
1112         wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", bp, len);
1113
1114         status = l2_packet_send(drv->sock_xmit, addr, ETH_P_EAPOL, bp, len);
1115
1116         if (bp != buf)
1117                 free(bp);
1118         return status;
1119 }
1120
1121 static void
1122 handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
1123 {
1124         struct madwifi_driver_data *drv = ctx;
1125         drv_event_eapol_rx(drv->hapd, src_addr, buf + sizeof(struct l2_ethhdr),
1126                            len - sizeof(struct l2_ethhdr));
1127 }
1128
1129 static void *
1130 madwifi_init(struct hostapd_data *hapd, struct wpa_init_params *params)
1131 {
1132         struct madwifi_driver_data *drv;
1133         struct ifreq ifr;
1134         struct iwreq iwr;
1135         char brname[IFNAMSIZ];
1136
1137         drv = os_zalloc(sizeof(struct madwifi_driver_data));
1138         if (drv == NULL) {
1139                 printf("Could not allocate memory for madwifi driver data\n");
1140                 return NULL;
1141         }
1142
1143         drv->hapd = hapd;
1144         drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1145         if (drv->ioctl_sock < 0) {
1146                 perror("socket[PF_INET,SOCK_DGRAM]");
1147                 goto bad;
1148         }
1149         memcpy(drv->iface, params->ifname, sizeof(drv->iface));
1150
1151         memset(&ifr, 0, sizeof(ifr));
1152         os_strlcpy(ifr.ifr_name, drv->iface, sizeof(ifr.ifr_name));
1153         if (ioctl(drv->ioctl_sock, SIOCGIFINDEX, &ifr) != 0) {
1154                 perror("ioctl(SIOCGIFINDEX)");
1155                 goto bad;
1156         }
1157         drv->ifindex = ifr.ifr_ifindex;
1158
1159         drv->sock_xmit = l2_packet_init(drv->iface, NULL, ETH_P_EAPOL,
1160                                         handle_read, drv, 1);
1161         if (drv->sock_xmit == NULL)
1162                 goto bad;
1163         if (l2_packet_get_own_addr(drv->sock_xmit, params->own_addr))
1164                 goto bad;
1165         if (params->bridge[0]) {
1166                 wpa_printf(MSG_DEBUG, "Configure bridge %s for EAPOL traffic.",
1167                            params->bridge[0]);
1168                 drv->sock_recv = l2_packet_init(params->bridge[0], NULL,
1169                                                 ETH_P_EAPOL, handle_read, drv,
1170                                                 1);
1171                 if (drv->sock_recv == NULL)
1172                         goto bad;
1173         } else if (linux_br_get(brname, drv->iface) == 0) {
1174                 wpa_printf(MSG_DEBUG, "Interface in bridge %s; configure for "
1175                            "EAPOL receive", brname);
1176                 drv->sock_recv = l2_packet_init(brname, NULL, ETH_P_EAPOL,
1177                                                 handle_read, drv, 1);
1178                 if (drv->sock_recv == NULL)
1179                         goto bad;
1180         } else
1181                 drv->sock_recv = drv->sock_xmit;
1182
1183         memset(&iwr, 0, sizeof(iwr));
1184         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1185
1186         iwr.u.mode = IW_MODE_MASTER;
1187
1188         if (ioctl(drv->ioctl_sock, SIOCSIWMODE, &iwr) < 0) {
1189                 perror("ioctl[SIOCSIWMODE]");
1190                 printf("Could not set interface to master mode!\n");
1191                 goto bad;
1192         }
1193
1194         /* mark down during setup */
1195         linux_set_iface_flags(drv->ioctl_sock, drv->iface, 0);
1196         madwifi_set_privacy(drv, 0); /* default to no privacy */
1197
1198         madwifi_receive_probe_req(drv);
1199
1200         if (madwifi_wireless_event_init(drv))
1201                 goto bad;
1202
1203         return drv;
1204 bad:
1205         if (drv->sock_xmit != NULL)
1206                 l2_packet_deinit(drv->sock_xmit);
1207         if (drv->ioctl_sock >= 0)
1208                 close(drv->ioctl_sock);
1209         if (drv != NULL)
1210                 free(drv);
1211         return NULL;
1212 }
1213
1214
1215 static void
1216 madwifi_deinit(void *priv)
1217 {
1218         struct madwifi_driver_data *drv = priv;
1219
1220         netlink_deinit(drv->netlink);
1221         (void) linux_set_iface_flags(drv->ioctl_sock, drv->iface, 0);
1222         if (drv->ioctl_sock >= 0)
1223                 close(drv->ioctl_sock);
1224         if (drv->sock_recv != NULL && drv->sock_recv != drv->sock_xmit)
1225                 l2_packet_deinit(drv->sock_recv);
1226         if (drv->sock_xmit != NULL)
1227                 l2_packet_deinit(drv->sock_xmit);
1228         if (drv->sock_raw)
1229                 l2_packet_deinit(drv->sock_raw);
1230         free(drv);
1231 }
1232
1233 static int
1234 madwifi_set_ssid(void *priv, const u8 *buf, int len)
1235 {
1236         struct madwifi_driver_data *drv = priv;
1237         struct iwreq iwr;
1238
1239         memset(&iwr, 0, sizeof(iwr));
1240         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1241         iwr.u.essid.flags = 1; /* SSID active */
1242         iwr.u.essid.pointer = (caddr_t) buf;
1243         iwr.u.essid.length = len + 1;
1244
1245         if (ioctl(drv->ioctl_sock, SIOCSIWESSID, &iwr) < 0) {
1246                 perror("ioctl[SIOCSIWESSID]");
1247                 printf("len=%d\n", len);
1248                 return -1;
1249         }
1250         return 0;
1251 }
1252
1253 static int
1254 madwifi_get_ssid(void *priv, u8 *buf, int len)
1255 {
1256         struct madwifi_driver_data *drv = priv;
1257         struct iwreq iwr;
1258         int ret = 0;
1259
1260         memset(&iwr, 0, sizeof(iwr));
1261         os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1262         iwr.u.essid.pointer = (caddr_t) buf;
1263         iwr.u.essid.length = len;
1264
1265         if (ioctl(drv->ioctl_sock, SIOCGIWESSID, &iwr) < 0) {
1266                 perror("ioctl[SIOCGIWESSID]");
1267                 ret = -1;
1268         } else
1269                 ret = iwr.u.essid.length;
1270
1271         return ret;
1272 }
1273
1274 static int
1275 madwifi_set_countermeasures(void *priv, int enabled)
1276 {
1277         struct madwifi_driver_data *drv = priv;
1278         wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
1279         return set80211param(drv, IEEE80211_PARAM_COUNTERMEASURES, enabled);
1280 }
1281
1282 static int
1283 madwifi_commit(void *priv)
1284 {
1285         struct madwifi_driver_data *drv = priv;
1286         return linux_set_iface_flags(drv->ioctl_sock, drv->iface, 1);
1287 }
1288
1289
1290 const struct wpa_driver_ops wpa_driver_madwifi_ops = {
1291         .name                   = "madwifi",
1292         .desc                   = "MADWIFI 802.11 support (Atheros, etc.)",
1293         .set_key                = wpa_driver_madwifi_set_key,
1294         .hapd_init              = madwifi_init,
1295         .hapd_deinit            = madwifi_deinit,
1296         .set_ieee8021x          = madwifi_set_ieee8021x,
1297         .set_privacy            = madwifi_set_privacy,
1298         .get_seqnum             = madwifi_get_seqnum,
1299         .flush                  = madwifi_flush,
1300         .set_generic_elem       = madwifi_set_opt_ie,
1301         .sta_set_flags          = madwifi_sta_set_flags,
1302         .read_sta_data          = madwifi_read_sta_driver_data,
1303         .hapd_send_eapol        = madwifi_send_eapol,
1304         .sta_disassoc           = madwifi_sta_disassoc,
1305         .sta_deauth             = madwifi_sta_deauth,
1306         .hapd_set_ssid          = madwifi_set_ssid,
1307         .hapd_get_ssid          = madwifi_get_ssid,
1308         .hapd_set_countermeasures       = madwifi_set_countermeasures,
1309         .sta_clear_stats        = madwifi_sta_clear_stats,
1310         .commit                 = madwifi_commit,
1311         .set_ap_wps_ie          = madwifi_set_ap_wps_ie,
1312         .set_freq               = madwifi_set_freq,
1313 };