wpa_supplicant/mlme.c

   1 /*
   2  * WPA Supplicant - Client mode MLME
   3  * Copyright (c) 2003-2008, Jouni Malinen <j@w1.fi>
   4  * Copyright (c) 2004, Instant802 Networks, Inc.
   5  * Copyright (c) 2005-2006, Devicescape Software, Inc.
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  *
  11  * Alternatively, this software may be distributed under the terms of BSD
  12  * license.
  13  *
  14  * See README and COPYING for more details.
  15  */
  16
  17 #include "includes.h"
  18
  19 #include "common.h"
  20 #include "eloop.h"
  21 #include "config_ssid.h"
  22 #include "wpa_supplicant_i.h"
  23 #include "wpa.h"
  24 #include "drivers/driver.h"
  25 #include "ieee802_11_defs.h"
  26 #include "mlme.h"
  27
  28
  29 /* Timeouts and intervals in milliseconds */
  30 #define IEEE80211_AUTH_TIMEOUT (200)
  31 #define IEEE80211_AUTH_MAX_TRIES 3
  32 #define IEEE80211_ASSOC_TIMEOUT (200)
  33 #define IEEE80211_ASSOC_MAX_TRIES 3
  34 #define IEEE80211_MONITORING_INTERVAL (2000)
  35 #define IEEE80211_PROBE_INTERVAL (60000)
  36 #define IEEE80211_RETRY_AUTH_INTERVAL (1000)
  37 #define IEEE80211_SCAN_INTERVAL (2000)
  38 #define IEEE80211_SCAN_INTERVAL_SLOW (15000)
  39 #define IEEE80211_IBSS_JOIN_TIMEOUT (20000)
  40
  41 #define IEEE80211_PROBE_DELAY (33)
  42 #define IEEE80211_CHANNEL_TIME (33)
  43 #define IEEE80211_PASSIVE_CHANNEL_TIME (200)
  44 #define IEEE80211_SCAN_RESULT_EXPIRE (10000)
  45 #define IEEE80211_IBSS_MERGE_INTERVAL (30000)
  46 #define IEEE80211_IBSS_INACTIVITY_LIMIT (60000)
  47
  48 #define IEEE80211_IBSS_MAX_STA_ENTRIES 128
  49
  50
  51 #define IEEE80211_FC(type, stype) host_to_le16((type << 2) | (stype << 4))
  52
  53
  54 struct ieee80211_sta_bss {
  55         struct ieee80211_sta_bss *next;
  56         struct ieee80211_sta_bss *hnext;
  57
  58         u8 bssid[ETH_ALEN];
  59         u8 ssid[MAX_SSID_LEN];
  60         size_t ssid_len;
  61         u16 capability; /* host byte order */
  62         int hw_mode;
  63         int channel;
  64         int freq;
  65         int rssi;
  66         u8 *ie;
  67         size_t ie_len;
  68         u8 *wpa_ie;
  69         size_t wpa_ie_len;
  70         u8 *rsn_ie;
  71         size_t rsn_ie_len;
  72         u8 *wmm_ie;
  73         size_t wmm_ie_len;
  74         u8 *mdie;
  75         size_t mdie_len;
  76 #define IEEE80211_MAX_SUPP_RATES 32
  77         u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
  78         size_t supp_rates_len;
  79         int beacon_int;
  80         u64 timestamp;
  81
  82         int probe_resp;
  83         struct os_time last_update;
  84 };
  85
  86
  87 static void ieee80211_send_probe_req(struct wpa_supplicant *wpa_s,
  88                                      const u8 *dst,
  89                                      const u8 *ssid, size_t ssid_len);
  90 static struct ieee80211_sta_bss *
  91 ieee80211_bss_get(struct wpa_supplicant *wpa_s, const u8 *bssid);
  92 static int ieee80211_sta_find_ibss(struct wpa_supplicant *wpa_s);
  93 static int ieee80211_sta_wep_configured(struct wpa_supplicant *wpa_s);
  94 static void ieee80211_sta_timer(void *eloop_ctx, void *timeout_ctx);
  95 static void ieee80211_sta_scan_timer(void *eloop_ctx, void *timeout_ctx);
  96
  97
  98 /* Parsed Information Elements */
  99 struct ieee802_11_elems {
 100         u8 *ssid;
 101         u8 ssid_len;
 102         u8 *supp_rates;
 103         u8 supp_rates_len;
 104         u8 *fh_params;
 105         u8 fh_params_len;
 106         u8 *ds_params;
 107         u8 ds_params_len;
 108         u8 *cf_params;
 109         u8 cf_params_len;
 110         u8 *tim;
 111         u8 tim_len;
 112         u8 *ibss_params;
 113         u8 ibss_params_len;
 114         u8 *challenge;
 115         u8 challenge_len;
 116         u8 *wpa;
 117         u8 wpa_len;
 118         u8 *rsn;
 119         u8 rsn_len;
 120         u8 *erp_info;
 121         u8 erp_info_len;
 122         u8 *ext_supp_rates;
 123         u8 ext_supp_rates_len;
 124         u8 *wmm_info;
 125         u8 wmm_info_len;
 126         u8 *wmm_param;
 127         u8 wmm_param_len;
 128         u8 *mdie;
 129         u8 mdie_len;
 130         u8 *ftie;
 131         u8 ftie_len;
 132 };
 133
 134 typedef enum { ParseOK = 0, ParseUnknown = 1, ParseFailed = -1 } ParseRes;
 135
 136
 137 static ParseRes ieee802_11_parse_elems(u8 *start, size_t len,
 138                                        struct ieee802_11_elems *elems)
 139 {
 140         size_t left = len;
 141         u8 *pos = start;
 142         int unknown = 0;
 143
 144         os_memset(elems, 0, sizeof(*elems));
 145
 146         while (left >= 2) {
 147                 u8 id, elen;
 148
 149                 id = *pos++;
 150                 elen = *pos++;
 151                 left -= 2;
 152
 153                 if (elen > left) {
 154 #if 0
 155                         wpa_printf(MSG_MSGDUMP, "MLME: IEEE 802.11 element "
 156                                    "parse failed (id=%d elen=%d left=%d)",
 157                                    id, elen, left);
 158 #endif
 159                         return ParseFailed;
 160                 }
 161
 162                 switch (id) {
 163                 case WLAN_EID_SSID:
 164                         elems->ssid = pos;
 165                         elems->ssid_len = elen;
 166                         break;
 167                 case WLAN_EID_SUPP_RATES:
 168                         elems->supp_rates = pos;
 169                         elems->supp_rates_len = elen;
 170                         break;
 171                 case WLAN_EID_FH_PARAMS:
 172                         elems->fh_params = pos;
 173                         elems->fh_params_len = elen;
 174                         break;
 175                 case WLAN_EID_DS_PARAMS:
 176                         elems->ds_params = pos;
 177                         elems->ds_params_len = elen;
 178                         break;
 179                 case WLAN_EID_CF_PARAMS:
 180                         elems->cf_params = pos;
 181                         elems->cf_params_len = elen;
 182                         break;
 183                 case WLAN_EID_TIM:
 184                         elems->tim = pos;
 185                         elems->tim_len = elen;
 186                         break;
 187                 case WLAN_EID_IBSS_PARAMS:
 188                         elems->ibss_params = pos;
 189                         elems->ibss_params_len = elen;
 190                         break;
 191                 case WLAN_EID_CHALLENGE:
 192                         elems->challenge = pos;
 193                         elems->challenge_len = elen;
 194                         break;
 195                 case WLAN_EID_VENDOR_SPECIFIC:
 196                         if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
 197                             pos[2] == 0xf2) {
 198                                 /* Microsoft OUI (00:50:F2) */
 199                                 if (pos[3] == 1) {
 200                                         /* OUI Type 1 - WPA IE */
 201                                         elems->wpa = pos;
 202                                         elems->wpa_len = elen;
 203                                 } else if (elen >= 5 && pos[3] == 2) {
 204                                         if (pos[4] == 0) {
 205                                                 elems->wmm_info = pos;
 206                                                 elems->wmm_info_len = elen;
 207                                         } else if (pos[4] == 1) {
 208                                                 elems->wmm_param = pos;
 209                                                 elems->wmm_param_len = elen;
 210                                         }
 211                                 }
 212                         }
 213                         break;
 214                 case WLAN_EID_RSN:
 215                         elems->rsn = pos;
 216                         elems->rsn_len = elen;
 217                         break;
 218                 case WLAN_EID_ERP_INFO:
 219                         elems->erp_info = pos;
 220                         elems->erp_info_len = elen;
 221                         break;
 222                 case WLAN_EID_EXT_SUPP_RATES:
 223                         elems->ext_supp_rates = pos;
 224                         elems->ext_supp_rates_len = elen;
 225                         break;
 226                 case WLAN_EID_MOBILITY_DOMAIN:
 227                         elems->mdie = pos;
 228                         elems->mdie_len = elen;
 229                         break;
 230                 case WLAN_EID_FAST_BSS_TRANSITION:
 231                         elems->ftie = pos;
 232                         elems->ftie_len = elen;
 233                         break;
 234                 default:
 235 #if 0
 236                         wpa_printf(MSG_MSGDUMP "MLME: IEEE 802.11 element "
 237                                    "parse ignored unknown element (id=%d "
 238                                    "elen=%d)", id, elen);
 239 #endif
 240                         unknown++;
 241                         break;
 242                 }
 243
 244                 left -= elen;
 245                 pos += elen;
 246         }
 247
 248         if (left)
 249                 return ParseFailed;
 250
 251         return unknown ? ParseUnknown : ParseOK;
 252 }
 253
 254
 255 static int ieee80211_sta_set_channel(struct wpa_supplicant *wpa_s,
 256                                      wpa_hw_mode phymode, int chan,
 257                                      int freq)
 258 {
 259         size_t i;
 260         struct wpa_hw_modes *mode;
 261
 262         for (i = 0; i < wpa_s->mlme.num_modes; i++) {
 263                 mode = &wpa_s->mlme.modes[i];
 264                 if (mode->mode == phymode) {
 265                         wpa_s->mlme.curr_rates = mode->rates;
 266                         wpa_s->mlme.num_curr_rates = mode->num_rates;
 267                         break;
 268                 }
 269         }
 270
 271         return wpa_drv_set_channel(wpa_s, phymode, chan, freq);
 272 }
 273
 274
 275
 276 #if 0 /* FIX */
 277 static int ecw2cw(int ecw)
 278 {
 279         int cw = 1;
 280         while (ecw > 0) {
 281                 cw <<= 1;
 282                 ecw--;
 283         }
 284         return cw - 1;
 285 }
 286 #endif
 287
 288
 289 static void ieee80211_sta_wmm_params(struct wpa_supplicant *wpa_s,
 290                                      u8 *wmm_param, size_t wmm_param_len)
 291 {
 292         size_t left;
 293         int count;
 294         u8 *pos;
 295
 296         if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
 297                 return;
 298         count = wmm_param[6] & 0x0f;
 299         if (count == wpa_s->mlme.wmm_last_param_set)
 300                 return;
 301         wpa_s->mlme.wmm_last_param_set = count;
 302
 303         pos = wmm_param + 8;
 304         left = wmm_param_len - 8;
 305
 306 #if 0 /* FIX */
 307         wmm_acm = 0;
 308         for (; left >= 4; left -= 4, pos += 4) {
 309                 int aci = (pos[0] >> 5) & 0x03;
 310                 int acm = (pos[0] >> 4) & 0x01;
 311                 int queue;
 312
 313                 switch (aci) {
 314                 case 1:
 315                         queue = IEEE80211_TX_QUEUE_DATA3;
 316                         if (acm)
 317                                 wmm_acm |= BIT(1) | BIT(2);
 318                         break;
 319                 case 2:
 320                         queue = IEEE80211_TX_QUEUE_DATA1;
 321                         if (acm)
 322                                 wmm_acm |= BIT(4) | BIT(5);
 323                         break;
 324                 case 3:
 325                         queue = IEEE80211_TX_QUEUE_DATA0;
 326                         if (acm)
 327                                 wmm_acm |= BIT(6) | BIT(7);
 328                         break;
 329                 case 0:
 330                 default:
 331                         queue = IEEE80211_TX_QUEUE_DATA2;
 332                         if (acm)
 333                                 wpa_s->mlme.wmm_acm |= BIT(0) | BIT(3);
 334                         break;
 335                 }
 336
 337                 params.aifs = pos[0] & 0x0f;
 338                 params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
 339                 params.cw_min = ecw2cw(pos[1] & 0x0f);
 340                 /* TXOP is in units of 32 usec; burst_time in 0.1 ms */
 341                 params.burst_time = (pos[2] | (pos[3] << 8)) * 32 / 100;
 342                 wpa_printf(MSG_DEBUG, "MLME: WMM queue=%d aci=%d acm=%d "
 343                            "aifs=%d cWmin=%d cWmax=%d burst=%d",
 344                            queue, aci, acm, params.aifs, params.cw_min,
 345                            params.cw_max, params.burst_time);
 346                 /* TODO: handle ACM (block TX, fallback to next lowest allowed
 347                  * AC for now) */
 348                 if (local->hw->conf_tx(local->mdev, queue, &params)) {
 349                         wpa_printf(MSG_DEBUG, "MLME: failed to set TX queue "
 350                                    "parameters for queue %d", queue);
 351                 }
 352         }
 353 #endif
 354 }
 355
 356
 357 static void ieee80211_set_associated(struct wpa_supplicant *wpa_s, int assoc)
 358 {
 359         if (wpa_s->mlme.associated == assoc)
 360                 return;
 361
 362         wpa_s->mlme.associated = assoc;
 363
 364         if (assoc) {
 365                 union wpa_event_data data;
 366                 os_memset(&data, 0, sizeof(data));
 367                 wpa_s->mlme.prev_bssid_set = 1;
 368                 os_memcpy(wpa_s->mlme.prev_bssid, wpa_s->bssid, ETH_ALEN);
 369                 data.assoc_info.req_ies = wpa_s->mlme.assocreq_ies;
 370                 data.assoc_info.req_ies_len = wpa_s->mlme.assocreq_ies_len;
 371                 data.assoc_info.resp_ies = wpa_s->mlme.assocresp_ies;
 372                 data.assoc_info.resp_ies_len = wpa_s->mlme.assocresp_ies_len;
 373                 wpa_supplicant_event(wpa_s, EVENT_ASSOC, &data);
 374         } else {
 375                 wpa_supplicant_event(wpa_s, EVENT_DISASSOC, NULL);
 376         }
 377         os_get_time(&wpa_s->mlme.last_probe);
 378 }
 379
 380
 381 static int ieee80211_sta_tx(struct wpa_supplicant *wpa_s, const u8 *buf,
 382                             size_t len)
 383 {
 384         return wpa_drv_send_mlme(wpa_s, buf, len);
 385 }
 386
 387
 388 static void ieee80211_send_auth(struct wpa_supplicant *wpa_s,
 389                                 int transaction, u8 *extra, size_t extra_len,
 390                                 int encrypt)
 391 {
 392         u8 *buf;
 393         size_t len;
 394         struct ieee80211_mgmt *mgmt;
 395
 396         buf = os_malloc(sizeof(*mgmt) + 6 + extra_len);
 397         if (buf == NULL) {
 398                 wpa_printf(MSG_DEBUG, "MLME: failed to allocate buffer for "
 399                            "auth frame");
 400                 return;
 401         }
 402
 403         mgmt = (struct ieee80211_mgmt *) buf;
 404         len = 24 + 6;
 405         os_memset(mgmt, 0, 24 + 6);
 406         mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 407                                            WLAN_FC_STYPE_AUTH);
 408         if (encrypt)
 409                 mgmt->frame_control |= host_to_le16(WLAN_FC_ISWEP);
 410         os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
 411         os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
 412         os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
 413         mgmt->u.auth.auth_alg = host_to_le16(wpa_s->mlme.auth_alg);
 414         mgmt->u.auth.auth_transaction = host_to_le16(transaction);
 415         wpa_s->mlme.auth_transaction = transaction + 1;
 416         mgmt->u.auth.status_code = host_to_le16(0);
 417         if (extra) {
 418                 os_memcpy(buf + len, extra, extra_len);
 419                 len += extra_len;
 420         }
 421
 422         ieee80211_sta_tx(wpa_s, buf, len);
 423         os_free(buf);
 424 }
 425
 426
 427 static void ieee80211_reschedule_timer(struct wpa_supplicant *wpa_s, int ms)
 428 {
 429         eloop_cancel_timeout(ieee80211_sta_timer, wpa_s, NULL);
 430         eloop_register_timeout(ms / 1000, 1000 * (ms % 1000),
 431                                ieee80211_sta_timer, wpa_s, NULL);
 432 }
 433
 434
 435 static void ieee80211_authenticate(struct wpa_supplicant *wpa_s)
 436 {
 437         u8 *extra;
 438         size_t extra_len;
 439
 440         wpa_s->mlme.auth_tries++;
 441         if (wpa_s->mlme.auth_tries > IEEE80211_AUTH_MAX_TRIES) {
 442                 wpa_printf(MSG_DEBUG, "MLME: authentication with AP " MACSTR
 443                            " timed out", MAC2STR(wpa_s->bssid));
 444                 return;
 445         }
 446
 447         wpa_s->mlme.state = IEEE80211_AUTHENTICATE;
 448         wpa_printf(MSG_DEBUG, "MLME: authenticate with AP " MACSTR,
 449                    MAC2STR(wpa_s->bssid));
 450
 451         extra = NULL;
 452         extra_len = 0;
 453
 454 #ifdef CONFIG_IEEE80211R
 455         if ((wpa_s->mlme.key_mgmt == KEY_MGMT_FT_802_1X ||
 456              wpa_s->mlme.key_mgmt == KEY_MGMT_FT_PSK) &&
 457             wpa_s->mlme.ft_ies) {
 458                 struct ieee80211_sta_bss *bss;
 459                 struct rsn_mdie *mdie = NULL;
 460                 bss = ieee80211_bss_get(wpa_s, wpa_s->bssid);
 461                 if (bss && bss->mdie_len >= 2 + sizeof(*mdie))
 462                         mdie = (struct rsn_mdie *) (bss->mdie + 2);
 463                 if (mdie &&
 464                     os_memcmp(mdie->mobility_domain, wpa_s->mlme.current_md,
 465                               MOBILITY_DOMAIN_ID_LEN) == 0) {
 466                         wpa_printf(MSG_DEBUG, "MLME: Trying to use FT "
 467                                    "over-the-air");
 468                         wpa_s->mlme.auth_alg = WLAN_AUTH_FT;
 469                         extra = wpa_s->mlme.ft_ies;
 470                         extra_len = wpa_s->mlme.ft_ies_len;
 471                 }
 472         }
 473 #endif /* CONFIG_IEEE80211R */
 474
 475         ieee80211_send_auth(wpa_s, 1, extra, extra_len, 0);
 476
 477         ieee80211_reschedule_timer(wpa_s, IEEE80211_AUTH_TIMEOUT);
 478 }
 479
 480
 481 static void ieee80211_send_assoc(struct wpa_supplicant *wpa_s)
 482 {
 483         struct ieee80211_mgmt *mgmt;
 484         u8 *pos, *ies, *buf;
 485         int i, len;
 486         u16 capab;
 487         struct ieee80211_sta_bss *bss;
 488         int wmm = 0;
 489         size_t blen, buflen;
 490
 491         if (wpa_s->mlme.curr_rates == NULL) {
 492                 wpa_printf(MSG_DEBUG, "MLME: curr_rates not set for assoc");
 493                 return;
 494         }
 495
 496         buflen = sizeof(*mgmt) + 200 + wpa_s->mlme.extra_ie_len +
 497                 wpa_s->mlme.ssid_len;
 498 #ifdef CONFIG_IEEE80211R
 499         if (wpa_s->mlme.ft_ies)
 500                 buflen += wpa_s->mlme.ft_ies_len;
 501 #endif /* CONFIG_IEEE80211R */
 502         buf = os_malloc(buflen);
 503         if (buf == NULL) {
 504                 wpa_printf(MSG_DEBUG, "MLME: failed to allocate buffer for "
 505                            "assoc frame");
 506                 return;
 507         }
 508         blen = 0;
 509
 510         capab = wpa_s->mlme.capab;
 511         if (wpa_s->mlme.phymode == WPA_MODE_IEEE80211G) {
 512                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME |
 513                         WLAN_CAPABILITY_SHORT_PREAMBLE;
 514         }
 515         bss = ieee80211_bss_get(wpa_s, wpa_s->bssid);
 516         if (bss) {
 517                 if (bss->capability & WLAN_CAPABILITY_PRIVACY)
 518                         capab |= WLAN_CAPABILITY_PRIVACY;
 519                 if (bss->wmm_ie) {
 520                         wmm = 1;
 521                 }
 522         }
 523
 524         mgmt = (struct ieee80211_mgmt *) buf;
 525         blen += 24;
 526         os_memset(mgmt, 0, 24);
 527         os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
 528         os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
 529         os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
 530
 531         if (wpa_s->mlme.prev_bssid_set) {
 532                 blen += 10;
 533                 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 534                                                    WLAN_FC_STYPE_REASSOC_REQ);
 535                 mgmt->u.reassoc_req.capab_info = host_to_le16(capab);
 536                 mgmt->u.reassoc_req.listen_interval = host_to_le16(1);
 537                 os_memcpy(mgmt->u.reassoc_req.current_ap,
 538                           wpa_s->mlme.prev_bssid,
 539                           ETH_ALEN);
 540         } else {
 541                 blen += 4;
 542                 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 543                                                    WLAN_FC_STYPE_ASSOC_REQ);
 544                 mgmt->u.assoc_req.capab_info = host_to_le16(capab);
 545                 mgmt->u.assoc_req.listen_interval = host_to_le16(1);
 546         }
 547
 548         /* SSID */
 549         ies = pos = buf + blen;
 550         blen += 2 + wpa_s->mlme.ssid_len;
 551         *pos++ = WLAN_EID_SSID;
 552         *pos++ = wpa_s->mlme.ssid_len;
 553         os_memcpy(pos, wpa_s->mlme.ssid, wpa_s->mlme.ssid_len);
 554
 555         len = wpa_s->mlme.num_curr_rates;
 556         if (len > 8)
 557                 len = 8;
 558         pos = buf + blen;
 559         blen += len + 2;
 560         *pos++ = WLAN_EID_SUPP_RATES;
 561         *pos++ = len;
 562         for (i = 0; i < len; i++) {
 563                 int rate = wpa_s->mlme.curr_rates[i].rate;
 564                 *pos++ = (u8) (rate / 5);
 565         }
 566
 567         if (wpa_s->mlme.num_curr_rates > len) {
 568                 pos = buf + blen;
 569                 blen += wpa_s->mlme.num_curr_rates - len + 2;
 570                 *pos++ = WLAN_EID_EXT_SUPP_RATES;
 571                 *pos++ = wpa_s->mlme.num_curr_rates - len;
 572                 for (i = len; i < wpa_s->mlme.num_curr_rates; i++) {
 573                         int rate = wpa_s->mlme.curr_rates[i].rate;
 574                         *pos++ = (u8) (rate / 5);
 575                 }
 576         }
 577
 578         if (wpa_s->mlme.extra_ie && wpa_s->mlme.auth_alg != WLAN_AUTH_FT) {
 579                 pos = buf + blen;
 580                 blen += wpa_s->mlme.extra_ie_len;
 581                 os_memcpy(pos, wpa_s->mlme.extra_ie, wpa_s->mlme.extra_ie_len);
 582         }
 583
 584 #ifdef CONFIG_IEEE80211R
 585         if ((wpa_s->mlme.key_mgmt == KEY_MGMT_FT_802_1X ||
 586              wpa_s->mlme.key_mgmt == KEY_MGMT_FT_PSK) &&
 587             wpa_s->mlme.auth_alg != WLAN_AUTH_FT &&
 588             bss && bss->mdie &&
 589             bss->mdie_len >= 2 + sizeof(struct rsn_mdie) &&
 590             bss->mdie[1] >= sizeof(struct rsn_mdie)) {
 591                 pos = buf + blen;
 592                 blen += 2 + sizeof(struct rsn_mdie);
 593                 *pos++ = WLAN_EID_MOBILITY_DOMAIN;
 594                 *pos++ = sizeof(struct rsn_mdie);
 595                 os_memcpy(pos, bss->mdie + 2, MOBILITY_DOMAIN_ID_LEN);
 596                 pos += MOBILITY_DOMAIN_ID_LEN;
 597                 *pos++ = 0; /* FIX: copy from the target AP's MDIE */
 598         }
 599
 600         if ((wpa_s->mlme.key_mgmt == KEY_MGMT_FT_802_1X ||
 601              wpa_s->mlme.key_mgmt == KEY_MGMT_FT_PSK) &&
 602             wpa_s->mlme.auth_alg == WLAN_AUTH_FT && wpa_s->mlme.ft_ies) {
 603                 pos = buf + blen;
 604                 os_memcpy(pos, wpa_s->mlme.ft_ies, wpa_s->mlme.ft_ies_len);
 605                 pos += wpa_s->mlme.ft_ies_len;
 606                 blen += wpa_s->mlme.ft_ies_len;
 607         }
 608 #endif /* CONFIG_IEEE80211R */
 609
 610         if (wmm && wpa_s->mlme.wmm_enabled) {
 611                 pos = buf + blen;
 612                 blen += 9;
 613                 *pos++ = WLAN_EID_VENDOR_SPECIFIC;
 614                 *pos++ = 7; /* len */
 615                 *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */
 616                 *pos++ = 0x50;
 617                 *pos++ = 0xf2;
 618                 *pos++ = 2; /* WME */
 619                 *pos++ = 0; /* WME info */
 620                 *pos++ = 1; /* WME ver */
 621                 *pos++ = 0;
 622         }
 623
 624         os_free(wpa_s->mlme.assocreq_ies);
 625         wpa_s->mlme.assocreq_ies_len = (buf + blen) - ies;
 626         wpa_s->mlme.assocreq_ies = os_malloc(wpa_s->mlme.assocreq_ies_len);
 627         if (wpa_s->mlme.assocreq_ies) {
 628                 os_memcpy(wpa_s->mlme.assocreq_ies, ies,
 629                           wpa_s->mlme.assocreq_ies_len);
 630         }
 631
 632         ieee80211_sta_tx(wpa_s, buf, blen);
 633         os_free(buf);
 634 }
 635
 636
 637 static void ieee80211_send_deauth(struct wpa_supplicant *wpa_s, u16 reason)
 638 {
 639         u8 *buf;
 640         size_t len;
 641         struct ieee80211_mgmt *mgmt;
 642
 643         buf = os_zalloc(sizeof(*mgmt));
 644         if (buf == NULL) {
 645                 wpa_printf(MSG_DEBUG, "MLME: failed to allocate buffer for "
 646                            "deauth frame");
 647                 return;
 648         }
 649
 650         mgmt = (struct ieee80211_mgmt *) buf;
 651         len = 24;
 652         os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
 653         os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
 654         os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
 655         mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 656                                            WLAN_FC_STYPE_DEAUTH);
 657         len += 2;
 658         mgmt->u.deauth.reason_code = host_to_le16(reason);
 659
 660         ieee80211_sta_tx(wpa_s, buf, len);
 661         os_free(buf);
 662 }
 663
 664
 665 static void ieee80211_send_disassoc(struct wpa_supplicant *wpa_s, u16 reason)
 666 {
 667         u8 *buf;
 668         size_t len;
 669         struct ieee80211_mgmt *mgmt;
 670
 671         buf = os_zalloc(sizeof(*mgmt));
 672         if (buf == NULL) {
 673                 wpa_printf(MSG_DEBUG, "MLME: failed to allocate buffer for "
 674                            "disassoc frame");
 675                 return;
 676         }
 677
 678         mgmt = (struct ieee80211_mgmt *) buf;
 679         len = 24;
 680         os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
 681         os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
 682         os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
 683         mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 684                                            WLAN_FC_STYPE_DISASSOC);
 685         len += 2;
 686         mgmt->u.disassoc.reason_code = host_to_le16(reason);
 687
 688         ieee80211_sta_tx(wpa_s, buf, len);
 689         os_free(buf);
 690 }
 691
 692
 693 static int ieee80211_privacy_mismatch(struct wpa_supplicant *wpa_s)
 694 {
 695         struct ieee80211_sta_bss *bss;
 696         int res = 0;
 697
 698         if (wpa_s->mlme.mixed_cell ||
 699             wpa_s->mlme.key_mgmt != KEY_MGMT_NONE)
 700                 return 0;
 701
 702         bss = ieee80211_bss_get(wpa_s, wpa_s->bssid);
 703         if (bss == NULL)
 704                 return 0;
 705
 706         if (ieee80211_sta_wep_configured(wpa_s) !=
 707             !!(bss->capability & WLAN_CAPABILITY_PRIVACY))
 708                 res = 1;
 709
 710         return res;
 711 }
 712
 713
 714 static void ieee80211_associate(struct wpa_supplicant *wpa_s)
 715 {
 716         wpa_s->mlme.assoc_tries++;
 717         if (wpa_s->mlme.assoc_tries > IEEE80211_ASSOC_MAX_TRIES) {
 718                 wpa_printf(MSG_DEBUG, "MLME: association with AP " MACSTR
 719                            " timed out", MAC2STR(wpa_s->bssid));
 720                 return;
 721         }
 722
 723         wpa_s->mlme.state = IEEE80211_ASSOCIATE;
 724         wpa_printf(MSG_DEBUG, "MLME: associate with AP " MACSTR,
 725                    MAC2STR(wpa_s->bssid));
 726         if (ieee80211_privacy_mismatch(wpa_s)) {
 727                 wpa_printf(MSG_DEBUG, "MLME: mismatch in privacy "
 728                            "configuration and mixed-cell disabled - abort "
 729                            "association");
 730                 return;
 731         }
 732
 733         ieee80211_send_assoc(wpa_s);
 734
 735         ieee80211_reschedule_timer(wpa_s, IEEE80211_ASSOC_TIMEOUT);
 736 }
 737
 738
 739 static void ieee80211_associated(struct wpa_supplicant *wpa_s)
 740 {
 741         int disassoc;
 742
 743         /* TODO: start monitoring current AP signal quality and number of
 744          * missed beacons. Scan other channels every now and then and search
 745          * for better APs. */
 746         /* TODO: remove expired BSSes */
 747
 748         wpa_s->mlme.state = IEEE80211_ASSOCIATED;
 749
 750 #if 0 /* FIX */
 751         sta = sta_info_get(local, wpa_s->bssid);
 752         if (sta == NULL) {
 753                 wpa_printf(MSG_DEBUG "MLME: No STA entry for own AP " MACSTR,
 754                            MAC2STR(wpa_s->bssid));
 755                 disassoc = 1;
 756         } else {
 757                 disassoc = 0;
 758                 if (time_after(jiffies,
 759                                sta->last_rx + IEEE80211_MONITORING_INTERVAL)) {
 760                         if (wpa_s->mlme.probereq_poll) {
 761                                 wpa_printf(MSG_DEBUG "MLME: No ProbeResp from "
 762                                            "current AP " MACSTR " - assume "
 763                                            "out of range",
 764                                            MAC2STR(wpa_s->bssid));
 765                                 disassoc = 1;
 766                         } else {
 767                                 ieee80211_send_probe_req(
 768                                         wpa_s->bssid,
 769                                         wpa_s->mlme.scan_ssid,
 770                                         wpa_s->mlme.scan_ssid_len);
 771                                 wpa_s->mlme.probereq_poll = 1;
 772                         }
 773                 } else {
 774                         wpa_s->mlme.probereq_poll = 0;
 775                         if (time_after(jiffies, wpa_s->mlme.last_probe +
 776                                        IEEE80211_PROBE_INTERVAL)) {
 777                                 wpa_s->mlme.last_probe = jiffies;
 778                                 ieee80211_send_probe_req(wpa_s->bssid,
 779                                                          wpa_s->mlme.ssid,
 780                                                          wpa_s->mlme.ssid_len);
 781                         }
 782                 }
 783                 sta_info_release(local, sta);
 784         }
 785 #else
 786         disassoc = 0;
 787 #endif
 788         if (disassoc) {
 789                 wpa_supplicant_event(wpa_s, EVENT_DISASSOC, NULL);
 790                 ieee80211_reschedule_timer(wpa_s,
 791                                            IEEE80211_MONITORING_INTERVAL +
 792                                            30000);
 793         } else {
 794                 ieee80211_reschedule_timer(wpa_s,
 795                                            IEEE80211_MONITORING_INTERVAL);
 796         }
 797 }
 798
 799
 800 static void ieee80211_send_probe_req(struct wpa_supplicant *wpa_s,
 801                                      const u8 *dst,
 802                                      const u8 *ssid, size_t ssid_len)
 803 {
 804         u8 *buf;
 805         size_t len;
 806         struct ieee80211_mgmt *mgmt;
 807         u8 *pos, *supp_rates;
 808         u8 *esupp_rates = NULL;
 809         int i;
 810
 811         buf = os_malloc(sizeof(*mgmt) + 200 + wpa_s->mlme.extra_probe_ie_len);
 812         if (buf == NULL) {
 813                 wpa_printf(MSG_DEBUG, "MLME: failed to allocate buffer for "
 814                            "probe request");
 815                 return;
 816         }
 817
 818         mgmt = (struct ieee80211_mgmt *) buf;
 819         len = 24;
 820         os_memset(mgmt, 0, 24);
 821         mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 822                                            WLAN_FC_STYPE_PROBE_REQ);
 823         os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
 824         if (dst) {
 825                 os_memcpy(mgmt->da, dst, ETH_ALEN);
 826                 os_memcpy(mgmt->bssid, dst, ETH_ALEN);
 827         } else {
 828                 os_memset(mgmt->da, 0xff, ETH_ALEN);
 829                 os_memset(mgmt->bssid, 0xff, ETH_ALEN);
 830         }
 831         pos = buf + len;
 832         len += 2 + ssid_len;
 833         *pos++ = WLAN_EID_SSID;
 834         *pos++ = ssid_len;
 835         os_memcpy(pos, ssid, ssid_len);
 836
 837         supp_rates = buf + len;
 838         len += 2;
 839         supp_rates[0] = WLAN_EID_SUPP_RATES;
 840         supp_rates[1] = 0;
 841         for (i = 0; i < wpa_s->mlme.num_curr_rates; i++) {
 842                 struct wpa_rate_data *rate = &wpa_s->mlme.curr_rates[i];
 843                 if (!(rate->flags & WPA_RATE_SUPPORTED))
 844                         continue;
 845                 if (esupp_rates) {
 846                         pos = buf + len;
 847                         len++;
 848                         esupp_rates[1]++;
 849                 } else if (supp_rates[1] == 8) {
 850                         esupp_rates = pos;
 851                         esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES;
 852                         esupp_rates[1] = 1;
 853                         pos = &esupp_rates[2];
 854                 } else {
 855                         pos = buf + len;
 856                         len++;
 857                         supp_rates[1]++;
 858                 }
 859                 *pos++ = rate->rate / 5;
 860         }
 861
 862         if (wpa_s->mlme.extra_probe_ie) {
 863                 os_memcpy(pos, wpa_s->mlme.extra_probe_ie,
 864                           wpa_s->mlme.extra_probe_ie_len);
 865                 len += wpa_s->mlme.extra_probe_ie_len;
 866         }
 867
 868         ieee80211_sta_tx(wpa_s, buf, len);
 869         os_free(buf);
 870 }
 871
 872
 873 static int ieee80211_sta_wep_configured(struct wpa_supplicant *wpa_s)
 874 {
 875 #if 0 /* FIX */
 876         if (sdata == NULL || sdata->default_key == NULL ||
 877             sdata->default_key->alg != ALG_WEP)
 878                 return 0;
 879         return 1;
 880 #else
 881         return 0;
 882 #endif
 883 }
 884
 885
 886 static void ieee80211_auth_completed(struct wpa_supplicant *wpa_s)
 887 {
 888         wpa_printf(MSG_DEBUG, "MLME: authenticated");
 889         wpa_s->mlme.authenticated = 1;
 890         ieee80211_associate(wpa_s);
 891 }
 892
 893
 894 static void ieee80211_auth_challenge(struct wpa_supplicant *wpa_s,
 895                                      struct ieee80211_mgmt *mgmt,
 896                                      size_t len,
 897                                      struct ieee80211_rx_status *rx_status)
 898 {
 899         u8 *pos;
 900         struct ieee802_11_elems elems;
 901
 902         wpa_printf(MSG_DEBUG, "MLME: replying to auth challenge");
 903         pos = mgmt->u.auth.variable;
 904         if (ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems)
 905             == ParseFailed) {
 906                 wpa_printf(MSG_DEBUG, "MLME: failed to parse Auth(challenge)");
 907                 return;
 908         }
 909         if (elems.challenge == NULL) {
 910                 wpa_printf(MSG_DEBUG, "MLME: no challenge IE in shared key "
 911                            "auth frame");
 912                 return;
 913         }
 914         ieee80211_send_auth(wpa_s, 3, elems.challenge - 2,
 915                             elems.challenge_len + 2, 1);
 916 }
 917
 918
 919 static void ieee80211_rx_mgmt_auth(struct wpa_supplicant *wpa_s,
 920                                    struct ieee80211_mgmt *mgmt,
 921                                    size_t len,
 922                                    struct ieee80211_rx_status *rx_status)
 923 {
 924         struct wpa_ssid *ssid = wpa_s->current_ssid;
 925         u16 auth_alg, auth_transaction, status_code;
 926         int adhoc;
 927
 928         adhoc = ssid && ssid->mode == 1;
 929
 930         if (wpa_s->mlme.state != IEEE80211_AUTHENTICATE && !adhoc) {
 931                 wpa_printf(MSG_DEBUG, "MLME: authentication frame received "
 932                            "from " MACSTR ", but not in authenticate state - "
 933                            "ignored", MAC2STR(mgmt->sa));
 934                 return;
 935         }
 936
 937         if (len < 24 + 6) {
 938                 wpa_printf(MSG_DEBUG, "MLME: too short (%lu) authentication "
 939                            "frame received from " MACSTR " - ignored",
 940                            (unsigned long) len, MAC2STR(mgmt->sa));
 941                 return;
 942         }
 943
 944         if (!adhoc && os_memcmp(wpa_s->bssid, mgmt->sa, ETH_ALEN) != 0) {
 945                 wpa_printf(MSG_DEBUG, "MLME: authentication frame received "
 946                            "from unknown AP (SA=" MACSTR " BSSID=" MACSTR
 947                            ") - ignored",
 948                            MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid));
 949                 return;
 950         }
 951
 952         if (adhoc && os_memcmp(wpa_s->bssid, mgmt->bssid, ETH_ALEN) != 0) {
 953                 wpa_printf(MSG_DEBUG, "MLME: authentication frame received "
 954                            "from unknown BSSID (SA=" MACSTR " BSSID=" MACSTR
 955                            ") - ignored",
 956                            MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid));
 957                 return;
 958         }
 959
 960         auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
 961         auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
 962         status_code = le_to_host16(mgmt->u.auth.status_code);
 963
 964         wpa_printf(MSG_DEBUG, "MLME: RX authentication from " MACSTR
 965                    " (alg=%d transaction=%d status=%d)",
 966                    MAC2STR(mgmt->sa), auth_alg, auth_transaction, status_code);
 967
 968         if (adhoc) {
 969                 /* IEEE 802.11 standard does not require authentication in IBSS
 970                  * networks and most implementations do not seem to use it.
 971                  * However, try to reply to authentication attempts if someone
 972                  * has actually implemented this.
 973                  * TODO: Could implement shared key authentication. */
 974                 if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1) {
 975                         wpa_printf(MSG_DEBUG, "MLME: unexpected IBSS "
 976                                    "authentication frame (alg=%d "
 977                                    "transaction=%d)",
 978                                    auth_alg, auth_transaction);
 979                         return;
 980                 }
 981                 ieee80211_send_auth(wpa_s, 2, NULL, 0, 0);
 982         }
 983
 984         if (auth_alg != wpa_s->mlme.auth_alg ||
 985             auth_transaction != wpa_s->mlme.auth_transaction) {
 986                 wpa_printf(MSG_DEBUG, "MLME: unexpected authentication frame "
 987                            "(alg=%d transaction=%d)",
 988                            auth_alg, auth_transaction);
 989                 return;
 990         }
 991
 992         if (status_code != WLAN_STATUS_SUCCESS) {
 993                 wpa_printf(MSG_DEBUG, "MLME: AP denied authentication "
 994                            "(auth_alg=%d code=%d)", wpa_s->mlme.auth_alg,
 995                            status_code);
 996                 if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
 997                         const int num_algs = 3;
 998                         u8 algs[num_algs];
 999                         int i, pos;
1000                         algs[0] = algs[1] = algs[2] = 0xff;
1001                         if (wpa_s->mlme.auth_algs & IEEE80211_AUTH_ALG_OPEN)
1002                                 algs[0] = WLAN_AUTH_OPEN;
1003                         if (wpa_s->mlme.auth_algs &
1004                             IEEE80211_AUTH_ALG_SHARED_KEY)
1005                                 algs[1] = WLAN_AUTH_SHARED_KEY;
1006                         if (wpa_s->mlme.auth_algs & IEEE80211_AUTH_ALG_LEAP)
1007                                 algs[2] = WLAN_AUTH_LEAP;
1008                         if (wpa_s->mlme.auth_alg == WLAN_AUTH_OPEN)
1009                                 pos = 0;
1010                         else if (wpa_s->mlme.auth_alg == WLAN_AUTH_SHARED_KEY)
1011                                 pos = 1;
1012                         else
1013                                 pos = 2;
1014                         for (i = 0; i < num_algs; i++) {
1015                                 pos++;
1016                                 if (pos >= num_algs)
1017                                         pos = 0;
1018                                 if (algs[pos] == wpa_s->mlme.auth_alg ||
1019                                     algs[pos] == 0xff)
1020                                         continue;
1021                                 if (algs[pos] == WLAN_AUTH_SHARED_KEY &&
1022                                     !ieee80211_sta_wep_configured(wpa_s))
1023                                         continue;
1024                                 wpa_s->mlme.auth_alg = algs[pos];
1025                                 wpa_printf(MSG_DEBUG, "MLME: set auth_alg=%d "
1026                                            "for next try",
1027                                            wpa_s->mlme.auth_alg);
1028                                 break;
1029                         }
1030                 }
1031                 return;
1032         }
1033
1034         switch (wpa_s->mlme.auth_alg) {
1035         case WLAN_AUTH_OPEN:
1036         case WLAN_AUTH_LEAP:
1037                 ieee80211_auth_completed(wpa_s);
1038                 break;
1039         case WLAN_AUTH_SHARED_KEY:
1040                 if (wpa_s->mlme.auth_transaction == 4)
1041                         ieee80211_auth_completed(wpa_s);
1042                 else
1043                         ieee80211_auth_challenge(wpa_s, mgmt, len,
1044                                                  rx_status);
1045                 break;
1046 #ifdef CONFIG_IEEE80211R
1047         case WLAN_AUTH_FT:
1048         {
1049                 union wpa_event_data data;
1050                 os_memset(&data, 0, sizeof(data));
1051                 data.ft_ies.ies = mgmt->u.auth.variable;
1052                 data.ft_ies.ies_len = len -
1053                         (mgmt->u.auth.variable - (u8 *) mgmt);
1054                 wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &data);
1055                 ieee80211_auth_completed(wpa_s);
1056                 break;
1057         }
1058 #endif /* CONFIG_IEEE80211R */
1059         }
1060 }
1061
1062
1063 static void ieee80211_rx_mgmt_deauth(struct wpa_supplicant *wpa_s,
1064                                      struct ieee80211_mgmt *mgmt,
1065                                      size_t len,
1066                                      struct ieee80211_rx_status *rx_status)
1067 {
1068         u16 reason_code;
1069
1070         if (len < 24 + 2) {
1071                 wpa_printf(MSG_DEBUG, "MLME: too short (%lu) deauthentication "
1072                            "frame received from " MACSTR " - ignored",
1073                            (unsigned long) len, MAC2STR(mgmt->sa));
1074                 return;
1075         }
1076
1077         if (os_memcmp(wpa_s->bssid, mgmt->sa, ETH_ALEN) != 0) {
1078                 wpa_printf(MSG_DEBUG, "MLME: deauthentication frame received "
1079                            "from unknown AP (SA=" MACSTR " BSSID=" MACSTR
1080                            ") - ignored",
1081                            MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid));
1082                 return;
1083         }
1084
1085         reason_code = le_to_host16(mgmt->u.deauth.reason_code);
1086
1087         wpa_printf(MSG_DEBUG, "MLME: RX deauthentication from " MACSTR
1088                    " (reason=%d)", MAC2STR(mgmt->sa), reason_code);
1089
1090         if (wpa_s->mlme.authenticated)
1091                 wpa_printf(MSG_DEBUG, "MLME: deauthenticated");
1092
1093         if (wpa_s->mlme.state == IEEE80211_AUTHENTICATE ||
1094             wpa_s->mlme.state == IEEE80211_ASSOCIATE ||
1095             wpa_s->mlme.state == IEEE80211_ASSOCIATED) {
1096                 wpa_s->mlme.state = IEEE80211_AUTHENTICATE;
1097                 ieee80211_reschedule_timer(wpa_s,
1098                                            IEEE80211_RETRY_AUTH_INTERVAL);
1099         }
1100
1101         ieee80211_set_associated(wpa_s, 0);
1102         wpa_s->mlme.authenticated = 0;
1103 }
1104
1105
1106 static void ieee80211_rx_mgmt_disassoc(struct wpa_supplicant *wpa_s,
1107                                        struct ieee80211_mgmt *mgmt,
1108                                        size_t len,
1109                                        struct ieee80211_rx_status *rx_status)
1110 {
1111         u16 reason_code;
1112
1113         if (len < 24 + 2) {
1114                 wpa_printf(MSG_DEBUG, "MLME: too short (%lu) disassociation "
1115                            "frame received from " MACSTR " - ignored",
1116                            (unsigned long) len, MAC2STR(mgmt->sa));
1117                 return;
1118         }
1119
1120         if (os_memcmp(wpa_s->bssid, mgmt->sa, ETH_ALEN) != 0) {
1121                 wpa_printf(MSG_DEBUG, "MLME: disassociation frame received "
1122                            "from unknown AP (SA=" MACSTR " BSSID=" MACSTR
1123                            ") - ignored",
1124                            MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid));
1125                 return;
1126         }
1127
1128         reason_code = le_to_host16(mgmt->u.disassoc.reason_code);
1129
1130         wpa_printf(MSG_DEBUG, "MLME: RX disassociation from " MACSTR
1131                    " (reason=%d)", MAC2STR(mgmt->sa), reason_code);
1132
1133         if (wpa_s->mlme.associated)
1134                 wpa_printf(MSG_DEBUG, "MLME: disassociated");
1135
1136         if (wpa_s->mlme.state == IEEE80211_ASSOCIATED) {
1137                 wpa_s->mlme.state = IEEE80211_ASSOCIATE;
1138                 ieee80211_reschedule_timer(wpa_s,
1139                                            IEEE80211_RETRY_AUTH_INTERVAL);
1140         }
1141
1142         ieee80211_set_associated(wpa_s, 0);
1143 }
1144
1145
1146 static int ieee80211_ft_assoc_resp(struct wpa_supplicant *wpa_s,
1147                                    struct ieee802_11_elems *elems)
1148 {
1149 #ifdef CONFIG_IEEE80211R
1150         const u8 *mobility_domain = NULL;
1151         const u8 *r0kh_id = NULL;
1152         size_t r0kh_id_len = 0;
1153         const u8 *r1kh_id = NULL;
1154         struct rsn_ftie *hdr;
1155         const u8 *pos, *end;
1156
1157         if (elems->mdie && elems->mdie_len >= MOBILITY_DOMAIN_ID_LEN)
1158                 mobility_domain = elems->mdie;
1159         if (elems->ftie && elems->ftie_len >= sizeof(struct rsn_ftie)) {
1160                 end = elems->ftie + elems->ftie_len;
1161                 hdr = (struct rsn_ftie *) elems->ftie;
1162                 pos = (const u8 *) (hdr + 1);
1163                 while (pos + 1 < end) {
1164                         if (pos + 2 + pos[1] > end)
1165                                 break;
1166                         if (pos[0] == FTIE_SUBELEM_R1KH_ID &&
1167                             pos[1] == FT_R1KH_ID_LEN)
1168                                 r1kh_id = pos + 2;
1169                         else if (pos[0] == FTIE_SUBELEM_R0KH_ID &&
1170                                  pos[1] >= 1 && pos[1] <= FT_R0KH_ID_MAX_LEN) {
1171                                 r0kh_id = pos + 2;
1172                                 r0kh_id_len = pos[1];
1173                         }
1174                         pos += 2 + pos[1];
1175                 }
1176         }
1177         return wpa_sm_set_ft_params(wpa_s->wpa, mobility_domain, r0kh_id,
1178                                     r0kh_id_len, r1kh_id);
1179 #else /* CONFIG_IEEE80211R */
1180         return 0;
1181 #endif /* CONFIG_IEEE80211R */
1182 }
1183
1184
1185 static void ieee80211_rx_mgmt_assoc_resp(struct wpa_supplicant *wpa_s,
1186                                          struct ieee80211_mgmt *mgmt,
1187                                          size_t len,
1188                                          struct ieee80211_rx_status *rx_status,
1189                                          int reassoc)
1190 {
1191         u8 rates[32];
1192         size_t rates_len;
1193         u16 capab_info, status_code, aid;
1194         struct ieee802_11_elems elems;
1195         u8 *pos;
1196
1197         /* AssocResp and ReassocResp have identical structure, so process both
1198          * of them in this function. */
1199
1200         if (wpa_s->mlme.state != IEEE80211_ASSOCIATE) {
1201                 wpa_printf(MSG_DEBUG, "MLME: association frame received from "
1202                            MACSTR ", but not in associate state - ignored",
1203                            MAC2STR(mgmt->sa));
1204                 return;
1205         }
1206
1207         if (len < 24 + 6) {
1208                 wpa_printf(MSG_DEBUG, "MLME: too short (%lu) association "
1209                            "frame received from " MACSTR " - ignored",
1210                            (unsigned long) len, MAC2STR(mgmt->sa));
1211                 return;
1212         }
1213
1214         if (os_memcmp(wpa_s->bssid, mgmt->sa, ETH_ALEN) != 0) {
1215                 wpa_printf(MSG_DEBUG, "MLME: association frame received from "
1216                            "unknown AP (SA=" MACSTR " BSSID=" MACSTR ") - "
1217                            "ignored", MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid));
1218                 return;
1219         }
1220
1221         capab_info = le_to_host16(mgmt->u.assoc_resp.capab_info);
1222         status_code = le_to_host16(mgmt->u.assoc_resp.status_code);
1223         aid = le_to_host16(mgmt->u.assoc_resp.aid);
1224         if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
1225                 wpa_printf(MSG_DEBUG, "MLME: invalid aid value %d; bits 15:14 "
1226                            "not set", aid);
1227         aid &= ~(BIT(15) | BIT(14));
1228
1229         wpa_printf(MSG_DEBUG, "MLME: RX %sssocResp from " MACSTR
1230                    " (capab=0x%x status=%d aid=%d)",
1231                    reassoc ? "Rea" : "A", MAC2STR(mgmt->sa),
1232                    capab_info, status_code, aid);
1233
1234         if (status_code != WLAN_STATUS_SUCCESS) {
1235                 wpa_printf(MSG_DEBUG, "MLME: AP denied association (code=%d)",
1236                            status_code);
1237                 return;
1238         }
1239
1240         pos = mgmt->u.assoc_resp.variable;
1241         if (ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems)
1242             == ParseFailed) {
1243                 wpa_printf(MSG_DEBUG, "MLME: failed to parse AssocResp");
1244                 return;
1245         }
1246
1247         if (elems.supp_rates == NULL) {
1248                 wpa_printf(MSG_DEBUG, "MLME: no SuppRates element in "
1249                            "AssocResp");
1250                 return;
1251         }
1252
1253         if (wpa_s->mlme.auth_alg == WLAN_AUTH_FT) {
1254                 if (!reassoc) {
1255                         wpa_printf(MSG_DEBUG, "MLME: AP tried to use "
1256                                    "association, not reassociation, response "
1257                                    "with FT");
1258                         return;
1259                 }
1260                 if (wpa_ft_validate_reassoc_resp(
1261                             wpa_s->wpa, pos, len - (pos - (u8 *) mgmt)) < 0) {
1262                         wpa_printf(MSG_DEBUG, "MLME: FT validation of Reassoc"
1263                                    "Resp failed");
1264                         return;
1265                 }
1266         } else if (ieee80211_ft_assoc_resp(wpa_s, &elems) < 0)
1267                 return;
1268
1269         wpa_printf(MSG_DEBUG, "MLME: associated");
1270         wpa_s->mlme.aid = aid;
1271         wpa_s->mlme.ap_capab = capab_info;
1272
1273         os_free(wpa_s->mlme.assocresp_ies);
1274         wpa_s->mlme.assocresp_ies_len = len - (pos - (u8 *) mgmt);
1275         wpa_s->mlme.assocresp_ies = os_malloc(wpa_s->mlme.assocresp_ies_len);
1276         if (wpa_s->mlme.assocresp_ies) {
1277                 os_memcpy(wpa_s->mlme.assocresp_ies, pos,
1278                           wpa_s->mlme.assocresp_ies_len);
1279         }
1280
1281         ieee80211_set_associated(wpa_s, 1);
1282
1283         rates_len = elems.supp_rates_len;
1284         if (rates_len > sizeof(rates))
1285                 rates_len = sizeof(rates);
1286         os_memcpy(rates, elems.supp_rates, rates_len);
1287         if (elems.ext_supp_rates) {
1288                 size_t _len = elems.ext_supp_rates_len;
1289                 if (_len > sizeof(rates) - rates_len)
1290                         _len = sizeof(rates) - rates_len;
1291                 os_memcpy(rates + rates_len, elems.ext_supp_rates, _len);
1292                 rates_len += _len;
1293         }
1294
1295         if (wpa_drv_set_bssid(wpa_s, wpa_s->bssid) < 0) {
1296                 wpa_printf(MSG_DEBUG, "MLME: failed to set BSSID for the "
1297                            "netstack");
1298         }
1299         if (wpa_drv_set_ssid(wpa_s, wpa_s->mlme.ssid, wpa_s->mlme.ssid_len) <
1300             0) {
1301                 wpa_printf(MSG_DEBUG, "MLME: failed to set SSID for the "
1302                            "netstack");
1303         }
1304
1305         /* Remove STA entry before adding a new one just in case to avoid
1306          * problems with existing configuration (e.g., keys). */
1307         wpa_drv_mlme_remove_sta(wpa_s, wpa_s->bssid);
1308         if (wpa_drv_mlme_add_sta(wpa_s, wpa_s->bssid, rates, rates_len) < 0) {
1309                 wpa_printf(MSG_DEBUG, "MLME: failed to add STA entry to the "
1310                            "netstack");
1311         }
1312
1313 #if 0 /* FIX? */
1314         sta->assoc_ap = 1;
1315
1316         if (elems.wmm_param && wpa_s->mlme.wmm_enabled) {
1317                 sta->flags |= WLAN_STA_WME;
1318                 ieee80211_sta_wmm_params(wpa_s, elems.wmm_param,
1319                                          elems.wmm_param_len);
1320         }
1321 #endif
1322
1323         ieee80211_associated(wpa_s);
1324 }
1325
1326
1327 /* Caller must hold local->sta_bss_lock */
1328 static void __ieee80211_bss_hash_add(struct wpa_supplicant *wpa_s,
1329                                      struct ieee80211_sta_bss *bss)
1330 {
1331         bss->hnext = wpa_s->mlme.sta_bss_hash[STA_HASH(bss->bssid)];
1332         wpa_s->mlme.sta_bss_hash[STA_HASH(bss->bssid)] = bss;
1333 }
1334
1335
1336 /* Caller must hold local->sta_bss_lock */
1337 static void __ieee80211_bss_hash_del(struct wpa_supplicant *wpa_s,
1338                                      struct ieee80211_sta_bss *bss)
1339 {
1340         struct ieee80211_sta_bss *b, *prev = NULL;
1341         b = wpa_s->mlme.sta_bss_hash[STA_HASH(bss->bssid)];
1342         while (b) {
1343                 if (b == bss) {
1344                         if (prev == NULL) {
1345                                 wpa_s->mlme.sta_bss_hash[STA_HASH(bss->bssid)]
1346                                         = bss->hnext;
1347                         } else {
1348                                 prev->hnext = bss->hnext;
1349                         }
1350                         break;
1351                 }
1352                 prev = b;
1353                 b = b->hnext;
1354         }
1355 }
1356
1357
1358 static struct ieee80211_sta_bss *
1359 ieee80211_bss_add(struct wpa_supplicant *wpa_s, const u8 *bssid)
1360 {
1361         struct ieee80211_sta_bss *bss;
1362
1363         bss = os_zalloc(sizeof(*bss));
1364         if (bss == NULL)
1365                 return NULL;
1366         os_memcpy(bss->bssid, bssid, ETH_ALEN);
1367
1368         /* TODO: order by RSSI? */
1369         bss->next = wpa_s->mlme.sta_bss_list;
1370         wpa_s->mlme.sta_bss_list = bss;
1371         __ieee80211_bss_hash_add(wpa_s, bss);
1372         return bss;
1373 }
1374
1375
1376 static struct ieee80211_sta_bss *
1377 ieee80211_bss_get(struct wpa_supplicant *wpa_s, const u8 *bssid)
1378 {
1379         struct ieee80211_sta_bss *bss;
1380
1381         bss = wpa_s->mlme.sta_bss_hash[STA_HASH(bssid)];
1382         while (bss) {
1383                 if (os_memcmp(bss->bssid, bssid, ETH_ALEN) == 0)
1384                         break;
1385                 bss = bss->hnext;
1386         }
1387         return bss;
1388 }
1389
1390
1391 static void ieee80211_bss_free(struct wpa_supplicant *wpa_s,
1392                                struct ieee80211_sta_bss *bss)
1393 {
1394         __ieee80211_bss_hash_del(wpa_s, bss);
1395         os_free(bss->ie);
1396         os_free(bss->wpa_ie);
1397         os_free(bss->rsn_ie);
1398         os_free(bss->wmm_ie);
1399         os_free(bss->mdie);
1400         os_free(bss);
1401 }
1402
1403
1404 static void ieee80211_bss_list_deinit(struct wpa_supplicant *wpa_s)
1405 {
1406         struct ieee80211_sta_bss *bss, *prev;
1407
1408         bss = wpa_s->mlme.sta_bss_list;
1409         wpa_s->mlme.sta_bss_list = NULL;
1410         while (bss) {
1411                 prev = bss;
1412                 bss = bss->next;
1413                 ieee80211_bss_free(wpa_s, prev);
1414         }
1415 }
1416
1417
1418 static void ieee80211_bss_info(struct wpa_supplicant *wpa_s,
1419                                struct ieee80211_mgmt *mgmt,
1420                                size_t len,
1421                                struct ieee80211_rx_status *rx_status,
1422                                int beacon)
1423 {
1424         struct ieee802_11_elems elems;
1425         size_t baselen;
1426         int channel, invalid = 0, clen;
1427         struct ieee80211_sta_bss *bss;
1428         u64 timestamp;
1429         u8 *pos, *ie_pos;
1430         size_t ie_len;
1431
1432         if (!beacon && os_memcmp(mgmt->da, wpa_s->own_addr, ETH_ALEN))
1433                 return; /* ignore ProbeResp to foreign address */
1434
1435 #if 0
1436         wpa_printf(MSG_MSGDUMP, "MLME: RX %s from " MACSTR " to " MACSTR,
1437                    beacon ? "Beacon" : "Probe Response",
1438                    MAC2STR(mgmt->sa), MAC2STR(mgmt->da));
1439 #endif
1440
1441         baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
1442         if (baselen > len)
1443                 return;
1444
1445         pos = mgmt->u.beacon.timestamp;
1446         timestamp = WPA_GET_LE64(pos);
1447
1448 #if 0 /* FIX */
1449         if (local->conf.mode == IW_MODE_ADHOC && beacon &&
1450             os_memcmp(mgmt->bssid, local->bssid, ETH_ALEN) == 0) {
1451 #ifdef IEEE80211_IBSS_DEBUG
1452                 static unsigned long last_tsf_debug = 0;
1453                 u64 tsf;
1454                 if (local->hw->get_tsf)
1455                         tsf = local->hw->get_tsf(local->mdev);
1456                 else
1457                         tsf = -1LLU;
1458                 if (time_after(jiffies, last_tsf_debug + 5 * HZ)) {
1459                         wpa_printf(MSG_DEBUG, "RX beacon SA=" MACSTR " BSSID="
1460                                    MACSTR " TSF=0x%llx BCN=0x%llx diff=%lld "
1461                                    "@%ld",
1462                                    MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid),
1463                                    tsf, timestamp, tsf - timestamp, jiffies);
1464                         last_tsf_debug = jiffies;
1465                 }
1466 #endif /* IEEE80211_IBSS_DEBUG */
1467         }
1468 #endif
1469
1470         ie_pos = mgmt->u.beacon.variable;
1471         ie_len = len - baselen;
1472         if (ieee802_11_parse_elems(ie_pos, ie_len, &elems) == ParseFailed)
1473                 invalid = 1;
1474
1475 #if 0 /* FIX */
1476         if (local->conf.mode == IW_MODE_ADHOC && elems.supp_rates &&
1477             os_memcmp(mgmt->bssid, local->bssid, ETH_ALEN) == 0 &&
1478             (sta = sta_info_get(local, mgmt->sa))) {
1479                 struct ieee80211_rate *rates;
1480                 size_t num_rates;
1481                 u32 supp_rates, prev_rates;
1482                 int i, j, oper_mode;
1483
1484                 rates = local->curr_rates;
1485                 num_rates = local->num_curr_rates;
1486                 oper_mode = wpa_s->mlme.sta_scanning ?
1487                         local->scan_oper_phymode : local->conf.phymode;
1488                 for (i = 0; i < local->hw->num_modes; i++) {
1489                         struct ieee80211_hw_modes *mode = &local->hw->modes[i];
1490                         if (oper_mode == mode->mode) {
1491                                 rates = mode->rates;
1492                                 num_rates = mode->num_rates;
1493                                 break;
1494                         }
1495                 }
1496
1497                 supp_rates = 0;
1498                 for (i = 0; i < elems.supp_rates_len +
1499                              elems.ext_supp_rates_len; i++) {
1500                         u8 rate = 0;
1501                         int own_rate;
1502                         if (i < elems.supp_rates_len)
1503                                 rate = elems.supp_rates[i];
1504                         else if (elems.ext_supp_rates)
1505                                 rate = elems.ext_supp_rates
1506                                         [i - elems.supp_rates_len];
1507                         own_rate = 5 * (rate & 0x7f);
1508                         if (oper_mode == MODE_ATHEROS_TURBO)
1509                                 own_rate *= 2;
1510                         for (j = 0; j < num_rates; j++)
1511                                 if (rates[j].rate == own_rate)
1512                                         supp_rates |= BIT(j);
1513                 }
1514
1515                 prev_rates = sta->supp_rates;
1516                 sta->supp_rates &= supp_rates;
1517                 if (sta->supp_rates == 0) {
1518                         /* No matching rates - this should not really happen.
1519                          * Make sure that at least one rate is marked
1520                          * supported to avoid issues with TX rate ctrl. */
1521                         sta->supp_rates = wpa_s->mlme.supp_rates_bits;
1522                 }
1523                 if (sta->supp_rates != prev_rates) {
1524                         wpa_printf(MSG_DEBUG, "MLME: updated supp_rates set "
1525                                    "for " MACSTR " based on beacon info "
1526                                    "(0x%x & 0x%x -> 0x%x)",
1527                                    MAC2STR(sta->addr), prev_rates,
1528                                    supp_rates, sta->supp_rates);
1529                 }
1530                 sta_info_release(local, sta);
1531         }
1532 #endif
1533
1534         if (elems.ssid == NULL)
1535                 return;
1536
1537         if (elems.ds_params && elems.ds_params_len == 1)
1538                 channel = elems.ds_params[0];
1539         else
1540                 channel = rx_status->channel;
1541
1542         bss = ieee80211_bss_get(wpa_s, mgmt->bssid);
1543         if (bss == NULL) {
1544                 bss = ieee80211_bss_add(wpa_s, mgmt->bssid);
1545                 if (bss == NULL)
1546                         return;
1547         } else {
1548 #if 0
1549                 /* TODO: order by RSSI? */
1550                 spin_lock_bh(&local->sta_bss_lock);
1551                 list_move_tail(&bss->list, &local->sta_bss_list);
1552                 spin_unlock_bh(&local->sta_bss_lock);
1553 #endif
1554         }
1555
1556         if (bss->probe_resp && beacon) {
1557                 /* Do not allow beacon to override data from Probe Response. */
1558                 return;
1559         }
1560
1561         bss->beacon_int = le_to_host16(mgmt->u.beacon.beacon_int);
1562         bss->capability = le_to_host16(mgmt->u.beacon.capab_info);
1563
1564         if (bss->ie == NULL || bss->ie_len < ie_len) {
1565                 os_free(bss->ie);
1566                 bss->ie = os_malloc(ie_len);
1567         }
1568         if (bss->ie) {
1569                 os_memcpy(bss->ie, ie_pos, ie_len);
1570                 bss->ie_len = ie_len;
1571         }
1572
1573         if (elems.ssid && elems.ssid_len <= MAX_SSID_LEN) {
1574                 os_memcpy(bss->ssid, elems.ssid, elems.ssid_len);
1575                 bss->ssid_len = elems.ssid_len;
1576         }
1577
1578         bss->supp_rates_len = 0;
1579         if (elems.supp_rates) {
1580                 clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
1581                 if (clen > elems.supp_rates_len)
1582                         clen = elems.supp_rates_len;
1583                 os_memcpy(&bss->supp_rates[bss->supp_rates_len],
1584                           elems.supp_rates, clen);
1585                 bss->supp_rates_len += clen;
1586         }
1587         if (elems.ext_supp_rates) {
1588                 clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
1589                 if (clen > elems.ext_supp_rates_len)
1590                         clen = elems.ext_supp_rates_len;
1591                 os_memcpy(&bss->supp_rates[bss->supp_rates_len],
1592                           elems.ext_supp_rates, clen);
1593                 bss->supp_rates_len += clen;
1594         }
1595
1596         if (elems.wpa &&
1597             (bss->wpa_ie == NULL || bss->wpa_ie_len != elems.wpa_len ||
1598              os_memcmp(bss->wpa_ie, elems.wpa, elems.wpa_len))) {
1599                 os_free(bss->wpa_ie);
1600                 bss->wpa_ie = os_malloc(elems.wpa_len + 2);
1601                 if (bss->wpa_ie) {
1602                         os_memcpy(bss->wpa_ie, elems.wpa - 2,
1603                                   elems.wpa_len + 2);
1604                         bss->wpa_ie_len = elems.wpa_len + 2;
1605                 } else
1606                         bss->wpa_ie_len = 0;
1607         } else if (!elems.wpa && bss->wpa_ie) {
1608                 os_free(bss->wpa_ie);
1609                 bss->wpa_ie = NULL;
1610                 bss->wpa_ie_len = 0;
1611         }
1612
1613         if (elems.rsn &&
1614             (bss->rsn_ie == NULL || bss->rsn_ie_len != elems.rsn_len ||
1615              os_memcmp(bss->rsn_ie, elems.rsn, elems.rsn_len))) {
1616                 os_free(bss->rsn_ie);
1617                 bss->rsn_ie = os_malloc(elems.rsn_len + 2);
1618                 if (bss->rsn_ie) {
1619                         os_memcpy(bss->rsn_ie, elems.rsn - 2,
1620                                   elems.rsn_len + 2);
1621                         bss->rsn_ie_len = elems.rsn_len + 2;
1622                 } else
1623                         bss->rsn_ie_len = 0;
1624         } else if (!elems.rsn && bss->rsn_ie) {
1625                 os_free(bss->rsn_ie);
1626                 bss->rsn_ie = NULL;
1627                 bss->rsn_ie_len = 0;
1628         }
1629
1630         if (elems.wmm_param &&
1631             (bss->wmm_ie == NULL || bss->wmm_ie_len != elems.wmm_param_len ||
1632              os_memcmp(bss->wmm_ie, elems.wmm_param, elems.wmm_param_len))) {
1633                 os_free(bss->wmm_ie);
1634                 bss->wmm_ie = os_malloc(elems.wmm_param_len + 2);
1635                 if (bss->wmm_ie) {
1636                         os_memcpy(bss->wmm_ie, elems.wmm_param - 2,
1637                                   elems.wmm_param_len + 2);
1638                         bss->wmm_ie_len = elems.wmm_param_len + 2;
1639                 } else
1640                         bss->wmm_ie_len = 0;
1641         } else if (!elems.wmm_param && bss->wmm_ie) {
1642                 os_free(bss->wmm_ie);
1643                 bss->wmm_ie = NULL;
1644                 bss->wmm_ie_len = 0;
1645         }
1646
1647 #ifdef CONFIG_IEEE80211R
1648         if (elems.mdie &&
1649             (bss->mdie == NULL || bss->mdie_len != elems.mdie_len ||
1650              os_memcmp(bss->mdie, elems.mdie, elems.mdie_len))) {
1651                 os_free(bss->mdie);
1652                 bss->mdie = os_malloc(elems.mdie_len + 2);
1653                 if (bss->mdie) {
1654                         os_memcpy(bss->mdie, elems.mdie - 2,
1655                                   elems.mdie_len + 2);
1656                         bss->mdie_len = elems.mdie_len + 2;
1657                 } else
1658                         bss->mdie_len = 0;
1659         } else if (!elems.mdie && bss->mdie) {
1660                 os_free(bss->mdie);
1661                 bss->mdie = NULL;
1662                 bss->mdie_len = 0;
1663         }
1664 #endif /* CONFIG_IEEE80211R */
1665
1666         bss->hw_mode = wpa_s->mlme.phymode;
1667         bss->channel = channel;
1668         bss->freq = wpa_s->mlme.freq;
1669         if (channel != wpa_s->mlme.channel &&
1670             (wpa_s->mlme.phymode == WPA_MODE_IEEE80211G ||
1671              wpa_s->mlme.phymode == WPA_MODE_IEEE80211B) &&
1672             channel >= 1 && channel <= 14) {
1673                 static const int freq_list[] = {
1674                         2412, 2417, 2422, 2427, 2432, 2437, 2442,
1675                         2447, 2452, 2457, 2462, 2467, 2472, 2484
1676                 };
1677                 /* IEEE 802.11g/b mode can receive packets from neighboring
1678                  * channels, so map the channel into frequency. */
1679                 bss->freq = freq_list[channel - 1];
1680         }
1681         bss->timestamp = timestamp;
1682         os_get_time(&bss->last_update);
1683         bss->rssi = rx_status->ssi;
1684         if (!beacon)
1685                 bss->probe_resp++;
1686 }
1687
1688
1689 static void ieee80211_rx_mgmt_probe_resp(struct wpa_supplicant *wpa_s,
1690                                          struct ieee80211_mgmt *mgmt,
1691                                          size_t len,
1692                                          struct ieee80211_rx_status *rx_status)
1693 {
1694         ieee80211_bss_info(wpa_s, mgmt, len, rx_status, 0);
1695 }
1696
1697
1698 static void ieee80211_rx_mgmt_beacon(struct wpa_supplicant *wpa_s,
1699                                      struct ieee80211_mgmt *mgmt,
1700                                      size_t len,
1701                                      struct ieee80211_rx_status *rx_status)
1702 {
1703         int use_protection;
1704         size_t baselen;
1705         struct ieee802_11_elems elems;
1706
1707         ieee80211_bss_info(wpa_s, mgmt, len, rx_status, 1);
1708
1709         if (!wpa_s->mlme.associated ||
1710             os_memcmp(wpa_s->bssid, mgmt->bssid, ETH_ALEN) != 0)
1711                 return;
1712
1713         /* Process beacon from the current BSS */
1714         baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
1715         if (baselen > len)
1716                 return;
1717
1718         if (ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen,
1719                                    &elems) == ParseFailed)
1720                 return;
1721
1722         use_protection = 0;
1723         if (elems.erp_info && elems.erp_info_len >= 1) {
1724                 use_protection =
1725                         (elems.erp_info[0] & ERP_INFO_USE_PROTECTION) != 0;
1726         }
1727
1728         if (use_protection != !!wpa_s->mlme.use_protection) {
1729                 wpa_printf(MSG_DEBUG, "MLME: CTS protection %s (BSSID=" MACSTR
1730                            ")",
1731                            use_protection ? "enabled" : "disabled",
1732                            MAC2STR(wpa_s->bssid));
1733                 wpa_s->mlme.use_protection = use_protection ? 1 : 0;
1734                 wpa_s->mlme.cts_protect_erp_frames = use_protection;
1735         }
1736
1737         if (elems.wmm_param && wpa_s->mlme.wmm_enabled) {
1738                 ieee80211_sta_wmm_params(wpa_s, elems.wmm_param,
1739                                          elems.wmm_param_len);
1740         }
1741 }
1742
1743
1744 static void ieee80211_rx_mgmt_probe_req(struct wpa_supplicant *wpa_s,
1745                                         struct ieee80211_mgmt *mgmt,
1746                                         size_t len,
1747                                         struct ieee80211_rx_status *rx_status)
1748 {
1749         int tx_last_beacon, adhoc;
1750 #if 0 /* FIX */
1751         struct ieee80211_mgmt *resp;
1752 #endif
1753         u8 *pos, *end;
1754         struct wpa_ssid *ssid = wpa_s->current_ssid;
1755
1756         adhoc = ssid && ssid->mode == 1;
1757
1758         if (!adhoc || wpa_s->mlme.state != IEEE80211_IBSS_JOINED ||
1759             len < 24 + 2 || wpa_s->mlme.probe_resp == NULL)
1760                 return;
1761
1762 #if 0 /* FIX */
1763         if (local->hw->tx_last_beacon)
1764                 tx_last_beacon = local->hw->tx_last_beacon(local->mdev);
1765         else
1766 #endif
1767                 tx_last_beacon = 1;
1768
1769 #ifdef IEEE80211_IBSS_DEBUG
1770         wpa_printf(MSG_DEBUG, "MLME: RX ProbeReq SA=" MACSTR " DA=" MACSTR
1771                    " BSSID=" MACSTR " (tx_last_beacon=%d)",
1772                    MAC2STR(mgmt->sa), MAC2STR(mgmt->da),
1773                    MAC2STR(mgmt->bssid), tx_last_beacon);
1774 #endif /* IEEE80211_IBSS_DEBUG */
1775
1776         if (!tx_last_beacon)
1777                 return;
1778
1779         if (os_memcmp(mgmt->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
1780             os_memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
1781                 return;
1782
1783         end = ((u8 *) mgmt) + len;
1784         pos = mgmt->u.probe_req.variable;
1785         if (pos[0] != WLAN_EID_SSID ||
1786             pos + 2 + pos[1] > end) {
1787                 wpa_printf(MSG_DEBUG, "MLME: Invalid SSID IE in ProbeReq from "
1788                            MACSTR, MAC2STR(mgmt->sa));
1789                 return;
1790         }
1791         if (pos[1] != 0 &&
1792             (pos[1] != wpa_s->mlme.ssid_len ||
1793              os_memcmp(pos + 2, wpa_s->mlme.ssid, wpa_s->mlme.ssid_len) != 0))
1794         {
1795                 /* Ignore ProbeReq for foreign SSID */
1796                 return;
1797         }
1798
1799 #if 0 /* FIX */
1800         /* Reply with ProbeResp */
1801         skb = skb_copy(wpa_s->mlme.probe_resp, GFP_ATOMIC);
1802         if (skb == NULL)
1803                 return;
1804
1805         resp = (struct ieee80211_mgmt *) skb->data;
1806         os_memcpy(resp->da, mgmt->sa, ETH_ALEN);
1807 #ifdef IEEE80211_IBSS_DEBUG
1808         wpa_printf(MSG_DEBUG, "MLME: Sending ProbeResp to " MACSTR,
1809                    MAC2STR(resp->da));
1810 #endif /* IEEE80211_IBSS_DEBUG */
1811         ieee80211_sta_tx(wpa_s, skb, 0, 1);
1812 #endif
1813 }
1814
1815
1816 static void ieee80211_rx_mgmt_ft_action(struct wpa_supplicant *wpa_s,
1817                                         struct ieee80211_mgmt *mgmt,
1818                                         size_t len,
1819                                         struct ieee80211_rx_status *rx_status)
1820 {
1821         union wpa_event_data data;
1822         u16 status;
1823         u8 *sta_addr, *target_ap_addr;
1824
1825         if (len < 24 + 1 + sizeof(mgmt->u.action.u.ft_action_resp)) {
1826                 wpa_printf(MSG_DEBUG, "MLME: Too short FT Action frame");
1827                 return;
1828         }
1829
1830         /*
1831          * Only FT Action Response is needed for now since reservation
1832          * protocol is not supported.
1833          */
1834         if (mgmt->u.action.u.ft_action_resp.action != 2) {
1835                 wpa_printf(MSG_DEBUG, "MLME: Unexpected FT Action %d",
1836                            mgmt->u.action.u.ft_action_resp.action);
1837                 return;
1838         }
1839
1840         status = le_to_host16(mgmt->u.action.u.ft_action_resp.status_code);
1841         sta_addr = mgmt->u.action.u.ft_action_resp.sta_addr;
1842         target_ap_addr = mgmt->u.action.u.ft_action_resp.target_ap_addr;
1843         wpa_printf(MSG_DEBUG, "MLME: Received FT Action Response: STA " MACSTR
1844                    " TargetAP " MACSTR " Status Code %d",
1845                    MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
1846         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
1847                 wpa_printf(MSG_DEBUG, "MLME: Foreign STA Address " MACSTR
1848                            " in FT Action Response", MAC2STR(sta_addr));
1849                 return;
1850
1851         }
1852
1853         if (status) {
1854                 wpa_printf(MSG_DEBUG, "MLME: FT Action Response indicates "
1855                            "failure (status code %d)", status);
1856                 /* TODO: report error to FT code(?) */
1857                 return;
1858         }
1859
1860         os_memset(&data, 0, sizeof(data));
1861         data.ft_ies.ies = mgmt->u.action.u.ft_action_resp.variable;
1862         data.ft_ies.ies_len = len - (mgmt->u.action.u.ft_action_resp.variable -
1863                                      (u8 *) mgmt);
1864         data.ft_ies.ft_action = 1;
1865         os_memcpy(data.ft_ies.target_ap, target_ap_addr, ETH_ALEN);
1866         wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &data);
1867         /* TODO: should only re-associate, if EVENT_FT_RESPONSE was processed
1868          * successfully */
1869         wpa_s->mlme.prev_bssid_set = 1;
1870         wpa_s->mlme.auth_alg = WLAN_AUTH_FT;
1871         os_memcpy(wpa_s->mlme.prev_bssid, wpa_s->bssid, ETH_ALEN);
1872         os_memcpy(wpa_s->bssid, target_ap_addr, ETH_ALEN);
1873         ieee80211_associate(wpa_s);
1874 }
1875
1876
1877 static void ieee80211_rx_mgmt_action(struct wpa_supplicant *wpa_s,
1878                                      struct ieee80211_mgmt *mgmt,
1879                                      size_t len,
1880                                      struct ieee80211_rx_status *rx_status)
1881 {
1882         wpa_printf(MSG_DEBUG, "MLME: received Action frame");
1883
1884         if (len < 25)
1885                 return;
1886
1887         if (mgmt->u.action.category == WLAN_ACTION_FT)
1888                 ieee80211_rx_mgmt_ft_action(wpa_s, mgmt, len, rx_status);
1889         else
1890                 wpa_printf(MSG_DEBUG, "MLME: unknown Action Category %d",
1891                            mgmt->u.action.category);
1892 }
1893
1894
1895 static void ieee80211_sta_rx_mgmt(struct wpa_supplicant *wpa_s,
1896                                   const u8 *buf, size_t len,
1897                                   struct ieee80211_rx_status *rx_status)
1898 {
1899         struct ieee80211_mgmt *mgmt;
1900         u16 fc;
1901
1902         if (len < 24)
1903                 return;
1904
1905         mgmt = (struct ieee80211_mgmt *) buf;
1906         fc = le_to_host16(mgmt->frame_control);
1907
1908         switch (WLAN_FC_GET_STYPE(fc)) {
1909         case WLAN_FC_STYPE_PROBE_REQ:
1910                 ieee80211_rx_mgmt_probe_req(wpa_s, mgmt, len, rx_status);
1911                 break;
1912         case WLAN_FC_STYPE_PROBE_RESP:
1913                 ieee80211_rx_mgmt_probe_resp(wpa_s, mgmt, len, rx_status);
1914                 break;
1915         case WLAN_FC_STYPE_BEACON:
1916                 ieee80211_rx_mgmt_beacon(wpa_s, mgmt, len, rx_status);
1917                 break;
1918         case WLAN_FC_STYPE_AUTH:
1919                 ieee80211_rx_mgmt_auth(wpa_s, mgmt, len, rx_status);
1920                 break;
1921         case WLAN_FC_STYPE_ASSOC_RESP:
1922                 ieee80211_rx_mgmt_assoc_resp(wpa_s, mgmt, len, rx_status, 0);
1923                 break;
1924         case WLAN_FC_STYPE_REASSOC_RESP:
1925                 ieee80211_rx_mgmt_assoc_resp(wpa_s, mgmt, len, rx_status, 1);
1926                 break;
1927         case WLAN_FC_STYPE_DEAUTH:
1928                 ieee80211_rx_mgmt_deauth(wpa_s, mgmt, len, rx_status);
1929                 break;
1930         case WLAN_FC_STYPE_DISASSOC:
1931                 ieee80211_rx_mgmt_disassoc(wpa_s, mgmt, len, rx_status);
1932                 break;
1933         case WLAN_FC_STYPE_ACTION:
1934                 ieee80211_rx_mgmt_action(wpa_s, mgmt, len, rx_status);
1935                 break;
1936         default:
1937                 wpa_printf(MSG_DEBUG, "MLME: received unknown management "
1938                            "frame - stype=%d", WLAN_FC_GET_STYPE(fc));
1939                 break;
1940         }
1941 }
1942
1943
1944 static void ieee80211_sta_rx_scan(struct wpa_supplicant *wpa_s,
1945                                   const u8 *buf, size_t len,
1946                                   struct ieee80211_rx_status *rx_status)
1947 {
1948         struct ieee80211_mgmt *mgmt;
1949         u16 fc;
1950
1951         if (len < 24)
1952                 return;
1953
1954         mgmt = (struct ieee80211_mgmt *) buf;
1955         fc = le_to_host16(mgmt->frame_control);
1956
1957         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT) {
1958                 if (WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
1959                         ieee80211_rx_mgmt_probe_resp(wpa_s, mgmt,
1960                                                      len, rx_status);
1961                 } else if (WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON) {
1962                         ieee80211_rx_mgmt_beacon(wpa_s, mgmt, len, rx_status);
1963                 }
1964         }
1965 }
1966
1967
1968 static int ieee80211_sta_active_ibss(struct wpa_supplicant *wpa_s)
1969 {
1970         int active = 0;
1971
1972 #if 0 /* FIX */
1973         list_for_each(ptr, &local->sta_list) {
1974                 sta = list_entry(ptr, struct sta_info, list);
1975                 if (sta->dev == dev &&
1976                     time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL,
1977                                jiffies)) {
1978                         active++;
1979                         break;
1980                 }
1981         }
1982 #endif
1983
1984         return active;
1985 }
1986
1987
1988 static void ieee80211_sta_expire(struct wpa_supplicant *wpa_s)
1989 {
1990 #if 0 /* FIX */
1991         list_for_each_safe(ptr, n, &local->sta_list) {
1992                 sta = list_entry(ptr, struct sta_info, list);
1993                 if (time_after(jiffies, sta->last_rx +
1994                                IEEE80211_IBSS_INACTIVITY_LIMIT)) {
1995                         wpa_printf(MSG_DEBUG, "MLME: expiring inactive STA "
1996                                    MACSTR, MAC2STR(sta->addr));
1997                         sta_info_free(local, sta, 1);
1998                 }
1999         }
2000 #endif
2001 }
2002
2003
2004 static void ieee80211_sta_merge_ibss(struct wpa_supplicant *wpa_s)
2005 {
2006         ieee80211_reschedule_timer(wpa_s, IEEE80211_IBSS_MERGE_INTERVAL);
2007
2008         ieee80211_sta_expire(wpa_s);
2009         if (ieee80211_sta_active_ibss(wpa_s))
2010                 return;
2011
2012         wpa_printf(MSG_DEBUG, "MLME: No active IBSS STAs - trying to scan for "
2013                    "other IBSS networks with same SSID (merge)");
2014         ieee80211_sta_req_scan(wpa_s, wpa_s->mlme.ssid, wpa_s->mlme.ssid_len);
2015 }
2016
2017
2018 static void ieee80211_sta_timer(void *eloop_ctx, void *timeout_ctx)
2019 {
2020         struct wpa_supplicant *wpa_s = eloop_ctx;
2021
2022         switch (wpa_s->mlme.state) {
2023         case IEEE80211_DISABLED:
2024                 break;
2025         case IEEE80211_AUTHENTICATE:
2026                 ieee80211_authenticate(wpa_s);
2027                 break;
2028         case IEEE80211_ASSOCIATE:
2029                 ieee80211_associate(wpa_s);
2030                 break;
2031         case IEEE80211_ASSOCIATED:
2032                 ieee80211_associated(wpa_s);
2033                 break;
2034         case IEEE80211_IBSS_SEARCH:
2035                 ieee80211_sta_find_ibss(wpa_s);
2036                 break;
2037         case IEEE80211_IBSS_JOINED:
2038                 ieee80211_sta_merge_ibss(wpa_s);
2039                 break;
2040         default:
2041                 wpa_printf(MSG_DEBUG, "ieee80211_sta_timer: Unknown state %d",
2042                            wpa_s->mlme.state);
2043                 break;
2044         }
2045
2046         if (ieee80211_privacy_mismatch(wpa_s)) {
2047                 wpa_printf(MSG_DEBUG, "MLME: privacy configuration mismatch "
2048                            "and mixed-cell disabled - disassociate");
2049
2050                 ieee80211_send_disassoc(wpa_s, WLAN_REASON_UNSPECIFIED);
2051                 ieee80211_set_associated(wpa_s, 0);
2052         }
2053 }
2054
2055
2056 static void ieee80211_sta_new_auth(struct wpa_supplicant *wpa_s)
2057 {
2058         struct wpa_ssid *ssid = wpa_s->current_ssid;
2059         if (ssid && ssid->mode != 0)
2060                 return;
2061
2062 #if 0 /* FIX */
2063         if (local->hw->reset_tsf) {
2064                 /* Reset own TSF to allow time synchronization work. */
2065                 local->hw->reset_tsf(local->mdev);
2066         }
2067 #endif
2068
2069         wpa_s->mlme.wmm_last_param_set = -1; /* allow any WMM update */
2070
2071
2072         if (wpa_s->mlme.auth_algs & IEEE80211_AUTH_ALG_OPEN)
2073                 wpa_s->mlme.auth_alg = WLAN_AUTH_OPEN;
2074         else if (wpa_s->mlme.auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY)
2075                 wpa_s->mlme.auth_alg = WLAN_AUTH_SHARED_KEY;
2076         else if (wpa_s->mlme.auth_algs & IEEE80211_AUTH_ALG_LEAP)
2077                 wpa_s->mlme.auth_alg = WLAN_AUTH_LEAP;
2078         else
2079                 wpa_s->mlme.auth_alg = WLAN_AUTH_OPEN;
2080         wpa_printf(MSG_DEBUG, "MLME: Initial auth_alg=%d",
2081                    wpa_s->mlme.auth_alg);
2082         wpa_s->mlme.auth_transaction = -1;
2083         wpa_s->mlme.auth_tries = wpa_s->mlme.assoc_tries = 0;
2084         ieee80211_authenticate(wpa_s);
2085 }
2086
2087
2088 static int ieee80211_ibss_allowed(struct wpa_supplicant *wpa_s)
2089 {
2090 #if 0 /* FIX */
2091         int m, c;
2092
2093         for (m = 0; m < local->hw->num_modes; m++) {
2094                 struct ieee80211_hw_modes *mode = &local->hw->modes[m];
2095                 if (mode->mode != local->conf.phymode)
2096                         continue;
2097                 for (c = 0; c < mode->num_channels; c++) {
2098                         struct ieee80211_channel *chan = &mode->channels[c];
2099                         if (chan->flag & IEEE80211_CHAN_W_SCAN &&
2100                             chan->chan == local->conf.channel) {
2101                                 if (chan->flag & IEEE80211_CHAN_W_IBSS)
2102                                         return 1;
2103                                 break;
2104                         }
2105                 }
2106         }
2107 #endif
2108
2109         return 0;
2110 }
2111
2112
2113 static int ieee80211_sta_join_ibss(struct wpa_supplicant *wpa_s,
2114                                    struct ieee80211_sta_bss *bss)
2115 {
2116         int res = 0, rates, done = 0;
2117         struct ieee80211_mgmt *mgmt;
2118 #if 0 /* FIX */
2119         struct ieee80211_tx_control control;
2120         struct ieee80211_rate *rate;
2121         struct rate_control_extra extra;
2122 #endif
2123         u8 *pos, *buf;
2124         size_t len;
2125
2126         /* Remove possible STA entries from other IBSS networks. */
2127 #if 0 /* FIX */
2128         sta_info_flush(local, NULL);
2129
2130         if (local->hw->reset_tsf) {
2131                 /* Reset own TSF to allow time synchronization work. */
2132                 local->hw->reset_tsf(local->mdev);
2133         }
2134 #endif
2135         os_memcpy(wpa_s->bssid, bss->bssid, ETH_ALEN);
2136
2137 #if 0 /* FIX */
2138         local->conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10;
2139
2140         sdata->drop_unencrypted = bss->capability &
2141                 host_to_le16(WLAN_CAPABILITY_PRIVACY) ? 1 : 0;
2142 #endif
2143
2144 #if 0 /* FIX */
2145         os_memset(&rq, 0, sizeof(rq));
2146         rq.m = bss->freq * 100000;
2147         rq.e = 1;
2148         res = ieee80211_ioctl_siwfreq(wpa_s, NULL, &rq, NULL);
2149 #endif
2150
2151         if (!ieee80211_ibss_allowed(wpa_s)) {
2152 #if 0 /* FIX */
2153                 wpa_printf(MSG_DEBUG, "MLME: IBSS not allowed on channel %d "
2154                            "(%d MHz)", local->conf.channel,
2155                            local->conf.freq);
2156 #endif
2157                 return -1;
2158         }
2159
2160         /* Set beacon template based on scan results */
2161         buf = os_malloc(400);
2162         len = 0;
2163         do {
2164                 if (buf == NULL)
2165                         break;
2166
2167                 mgmt = (struct ieee80211_mgmt *) buf;
2168                 len += 24 + sizeof(mgmt->u.beacon);
2169                 os_memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon));
2170                 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
2171                                                    WLAN_FC_STYPE_BEACON);
2172                 os_memset(mgmt->da, 0xff, ETH_ALEN);
2173                 os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
2174                 os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
2175 #if 0 /* FIX */
2176                 mgmt->u.beacon.beacon_int =
2177                         host_to_le16(local->conf.beacon_int);
2178 #endif
2179                 mgmt->u.beacon.capab_info = host_to_le16(bss->capability);
2180
2181                 pos = buf + len;
2182                 len += 2 + wpa_s->mlme.ssid_len;
2183                 *pos++ = WLAN_EID_SSID;
2184                 *pos++ = wpa_s->mlme.ssid_len;
2185                 os_memcpy(pos, wpa_s->mlme.ssid, wpa_s->mlme.ssid_len);
2186
2187                 rates = bss->supp_rates_len;
2188                 if (rates > 8)
2189                         rates = 8;
2190                 pos = buf + len;
2191                 len += 2 + rates;
2192                 *pos++ = WLAN_EID_SUPP_RATES;
2193                 *pos++ = rates;
2194                 os_memcpy(pos, bss->supp_rates, rates);
2195
2196                 pos = buf + len;
2197                 len += 2 + 1;
2198                 *pos++ = WLAN_EID_DS_PARAMS;
2199                 *pos++ = 1;
2200                 *pos++ = bss->channel;
2201
2202                 pos = buf + len;
2203                 len += 2 + 2;
2204                 *pos++ = WLAN_EID_IBSS_PARAMS;
2205                 *pos++ = 2;
2206                 /* FIX: set ATIM window based on scan results */
2207                 *pos++ = 0;
2208                 *pos++ = 0;
2209
2210                 if (bss->supp_rates_len > 8) {
2211                         rates = bss->supp_rates_len - 8;
2212                         pos = buf + len;
2213                         len += 2 + rates;
2214                         *pos++ = WLAN_EID_EXT_SUPP_RATES;
2215                         *pos++ = rates;
2216                         os_memcpy(pos, &bss->supp_rates[8], rates);
2217                 }
2218
2219 #if 0 /* FIX */
2220                 os_memset(&control, 0, sizeof(control));
2221                 control.pkt_type = PKT_PROBE_RESP;
2222                 os_memset(&extra, 0, sizeof(extra));
2223                 extra.endidx = local->num_curr_rates;
2224                 rate = rate_control_get_rate(wpa_s, skb, &extra);
2225                 if (rate == NULL) {
2226                         wpa_printf(MSG_DEBUG, "MLME: Failed to determine TX "
2227                                    "rate for IBSS beacon");
2228                         break;
2229                 }
2230                 control.tx_rate = (wpa_s->mlme.short_preamble &&
2231                                    (rate->flags & IEEE80211_RATE_PREAMBLE2)) ?
2232                         rate->val2 : rate->val;
2233                 control.antenna_sel = local->conf.antenna_sel;
2234                 control.power_level = local->conf.power_level;
2235                 control.no_ack = 1;
2236                 control.retry_limit = 1;
2237                 control.rts_cts_duration = 0;
2238 #endif
2239
2240 #if 0 /* FIX */
2241                 wpa_s->mlme.probe_resp = skb_copy(skb, GFP_ATOMIC);
2242                 if (wpa_s->mlme.probe_resp) {
2243                         mgmt = (struct ieee80211_mgmt *)
2244                                 wpa_s->mlme.probe_resp->data;
2245                         mgmt->frame_control =
2246                                 IEEE80211_FC(WLAN_FC_TYPE_MGMT,
2247                                              WLAN_FC_STYPE_PROBE_RESP);
2248                 } else {
2249                         wpa_printf(MSG_DEBUG, "MLME: Could not allocate "
2250                                    "ProbeResp template for IBSS");
2251                 }
2252
2253                 if (local->hw->beacon_update &&
2254                     local->hw->beacon_update(wpa_s, skb, &control) == 0) {
2255                         wpa_printf(MSG_DEBUG, "MLME: Configured IBSS beacon "
2256                                    "template based on scan results");
2257                         skb = NULL;
2258                 }
2259
2260                 rates = 0;
2261                 for (i = 0; i < bss->supp_rates_len; i++) {
2262                         int rate = (bss->supp_rates[i] & 0x7f) * 5;
2263                         if (local->conf.phymode == MODE_ATHEROS_TURBO)
2264                                 rate *= 2;
2265                         for (j = 0; j < local->num_curr_rates; j++)
2266                                 if (local->curr_rates[j].rate == rate)
2267                                         rates |= BIT(j);
2268                 }
2269                 wpa_s->mlme.supp_rates_bits = rates;
2270 #endif
2271                 done = 1;
2272         } while (0);
2273
2274         os_free(buf);
2275         if (!done) {
2276                 wpa_printf(MSG_DEBUG, "MLME: Failed to configure IBSS beacon "
2277                            "template");
2278         }
2279
2280         wpa_s->mlme.state = IEEE80211_IBSS_JOINED;
2281         ieee80211_reschedule_timer(wpa_s, IEEE80211_IBSS_MERGE_INTERVAL);
2282
2283         return res;
2284 }
2285
2286
2287 #if 0 /* FIX */
2288 static int ieee80211_sta_create_ibss(struct wpa_supplicant *wpa_s)
2289 {
2290         struct ieee80211_sta_bss *bss;
2291         u8 bssid[ETH_ALEN], *pos;
2292         int i;
2293
2294 #if 0
2295         /* Easier testing, use fixed BSSID. */
2296         os_memset(bssid, 0xfe, ETH_ALEN);
2297 #else
2298         /* Generate random, not broadcast, locally administered BSSID. Mix in
2299          * own MAC address to make sure that devices that do not have proper
2300          * random number generator get different BSSID. */
2301         os_get_random(bssid, ETH_ALEN);
2302         for (i = 0; i < ETH_ALEN; i++)
2303                 bssid[i] ^= wpa_s->own_addr[i];
2304         bssid[0] &= ~0x01;
2305         bssid[0] |= 0x02;
2306 #endif
2307
2308         wpa_printf(MSG_DEBUG, "MLME: Creating new IBSS network, BSSID "
2309                    MACSTR "", MAC2STR(bssid));
2310
2311         bss = ieee80211_bss_add(wpa_s, bssid);
2312         if (bss == NULL)
2313                 return -ENOMEM;
2314
2315 #if 0 /* FIX */
2316         if (local->conf.beacon_int == 0)
2317                 local->conf.beacon_int = 100;
2318         bss->beacon_int = local->conf.beacon_int;
2319         bss->hw_mode = local->conf.phymode;
2320         bss->channel = local->conf.channel;
2321         bss->freq = local->conf.freq;
2322 #endif
2323         os_get_time(&bss->last_update);
2324         bss->capability = host_to_le16(WLAN_CAPABILITY_IBSS);
2325 #if 0 /* FIX */
2326         if (sdata->default_key) {
2327                 bss->capability |= host_to_le16(WLAN_CAPABILITY_PRIVACY);
2328         } else
2329                 sdata->drop_unencrypted = 0;
2330         bss->supp_rates_len = local->num_curr_rates;
2331 #endif
2332         pos = bss->supp_rates;
2333 #if 0 /* FIX */
2334         for (i = 0; i < local->num_curr_rates; i++) {
2335                 int rate = local->curr_rates[i].rate;
2336                 if (local->conf.phymode == MODE_ATHEROS_TURBO)
2337                         rate /= 2;
2338                 *pos++ = (u8) (rate / 5);
2339         }
2340 #endif
2341
2342         return ieee80211_sta_join_ibss(wpa_s, bss);
2343 }
2344 #endif
2345
2346
2347 static int ieee80211_sta_find_ibss(struct wpa_supplicant *wpa_s)
2348 {
2349         struct ieee80211_sta_bss *bss;
2350         int found = 0;
2351         u8 bssid[ETH_ALEN];
2352         int active_ibss;
2353         struct os_time now;
2354
2355         if (wpa_s->mlme.ssid_len == 0)
2356                 return -EINVAL;
2357
2358         active_ibss = ieee80211_sta_active_ibss(wpa_s);
2359 #ifdef IEEE80211_IBSS_DEBUG
2360         wpa_printf(MSG_DEBUG, "MLME: sta_find_ibss (active_ibss=%d)",
2361                    active_ibss);
2362 #endif /* IEEE80211_IBSS_DEBUG */
2363         for (bss = wpa_s->mlme.sta_bss_list; bss; bss = bss->next) {
2364                 if (wpa_s->mlme.ssid_len != bss->ssid_len ||
2365                     os_memcmp(wpa_s->mlme.ssid, bss->ssid, bss->ssid_len) != 0
2366                     || !(bss->capability & WLAN_CAPABILITY_IBSS))
2367                         continue;
2368 #ifdef IEEE80211_IBSS_DEBUG
2369                 wpa_printf(MSG_DEBUG, "   bssid=" MACSTR " found",
2370                            MAC2STR(bss->bssid));
2371 #endif /* IEEE80211_IBSS_DEBUG */
2372                 os_memcpy(bssid, bss->bssid, ETH_ALEN);
2373                 found = 1;
2374                 if (active_ibss ||
2375                     os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0)
2376                         break;
2377         }
2378
2379 #ifdef IEEE80211_IBSS_DEBUG
2380         wpa_printf(MSG_DEBUG, "   sta_find_ibss: selected " MACSTR " current "
2381                    MACSTR, MAC2STR(bssid), MAC2STR(wpa_s->bssid));
2382 #endif /* IEEE80211_IBSS_DEBUG */
2383         if (found && os_memcmp(wpa_s->bssid, bssid, ETH_ALEN) != 0 &&
2384             (bss = ieee80211_bss_get(wpa_s, bssid))) {
2385                 wpa_printf(MSG_DEBUG, "MLME: Selected IBSS BSSID " MACSTR
2386                            " based on configured SSID",
2387                            MAC2STR(bssid));
2388                 return ieee80211_sta_join_ibss(wpa_s, bss);
2389         }
2390 #ifdef IEEE80211_IBSS_DEBUG
2391         wpa_printf(MSG_DEBUG, "   did not try to join ibss");
2392 #endif /* IEEE80211_IBSS_DEBUG */
2393
2394         /* Selected IBSS not found in current scan results - try to scan */
2395         os_get_time(&now);
2396 #if 0 /* FIX */
2397         if (wpa_s->mlme.state == IEEE80211_IBSS_JOINED &&
2398             !ieee80211_sta_active_ibss(wpa_s)) {
2399                 ieee80211_reschedule_timer(wpa_s,
2400                                            IEEE80211_IBSS_MERGE_INTERVAL);
2401         } else if (time_after(jiffies, wpa_s->mlme.last_scan_completed +
2402                               IEEE80211_SCAN_INTERVAL)) {
2403                 wpa_printf(MSG_DEBUG, "MLME: Trigger new scan to find an IBSS "
2404                            "to join");
2405                 return ieee80211_sta_req_scan(wpa_s->mlme.ssid,
2406                                               wpa_s->mlme.ssid_len);
2407         } else if (wpa_s->mlme.state != IEEE80211_IBSS_JOINED) {
2408                 int interval = IEEE80211_SCAN_INTERVAL;
2409
2410                 if (time_after(jiffies, wpa_s->mlme.ibss_join_req +
2411                                IEEE80211_IBSS_JOIN_TIMEOUT)) {
2412                         if (wpa_s->mlme.create_ibss &&
2413                             ieee80211_ibss_allowed(wpa_s))
2414                                 return ieee80211_sta_create_ibss(wpa_s);
2415                         if (wpa_s->mlme.create_ibss) {
2416                                 wpa_printf(MSG_DEBUG, "MLME: IBSS not allowed "
2417                                            "on the configured channel %d "
2418                                            "(%d MHz)",
2419                                            local->conf.channel,
2420                                            local->conf.freq);
2421                         }
2422
2423                         /* No IBSS found - decrease scan interval and continue
2424                          * scanning. */
2425                         interval = IEEE80211_SCAN_INTERVAL_SLOW;
2426                 }
2427
2428                 wpa_s->mlme.state = IEEE80211_IBSS_SEARCH;
2429                 ieee80211_reschedule_timer(wpa_s, interval);
2430                 return 0;
2431         }
2432 #endif
2433
2434         return 0;
2435 }
2436
2437
2438 int ieee80211_sta_get_ssid(struct wpa_supplicant *wpa_s, u8 *ssid,
2439                            size_t *len)
2440 {
2441         os_memcpy(ssid, wpa_s->mlme.ssid, wpa_s->mlme.ssid_len);
2442         *len = wpa_s->mlme.ssid_len;
2443         return 0;
2444 }
2445
2446
2447 int ieee80211_sta_associate(struct wpa_supplicant *wpa_s,
2448                             struct wpa_driver_associate_params *params)
2449 {
2450         struct ieee80211_sta_bss *bss;
2451
2452         wpa_s->mlme.bssid_set = 0;
2453         wpa_s->mlme.freq = params->freq;
2454         if (params->bssid) {
2455                 os_memcpy(wpa_s->bssid, params->bssid, ETH_ALEN);
2456                 if (os_memcmp(params->bssid, "\x00\x00\x00\x00\x00\x00",
2457                               ETH_ALEN))
2458                         wpa_s->mlme.bssid_set = 1;
2459                 bss = ieee80211_bss_get(wpa_s, wpa_s->bssid);
2460                 if (bss) {
2461                         wpa_s->mlme.phymode = bss->hw_mode;
2462                         wpa_s->mlme.channel = bss->channel;
2463                         wpa_s->mlme.freq = bss->freq;
2464                 }
2465         }
2466
2467 #if 0 /* FIX */
2468         /* TODO: This should always be done for IBSS, even if IEEE80211_QOS is
2469          * not defined. */
2470         if (local->hw->conf_tx) {
2471                 struct ieee80211_tx_queue_params qparam;
2472                 int i;
2473
2474                 os_memset(&qparam, 0, sizeof(qparam));
2475                 /* TODO: are these ok defaults for all hw_modes? */
2476                 qparam.aifs = 2;
2477                 qparam.cw_min =
2478                         local->conf.phymode == MODE_IEEE80211B ? 31 : 15;
2479                 qparam.cw_max = 1023;
2480                 qparam.burst_time = 0;
2481                 for (i = IEEE80211_TX_QUEUE_DATA0; i < NUM_TX_DATA_QUEUES; i++)
2482                 {
2483                         local->hw->conf_tx(wpa_s, i + IEEE80211_TX_QUEUE_DATA0,
2484                                            &qparam);
2485                 }
2486                 /* IBSS uses different parameters for Beacon sending */
2487                 qparam.cw_min++;
2488                 qparam.cw_min *= 2;
2489                 qparam.cw_min--;
2490                 local->hw->conf_tx(wpa_s, IEEE80211_TX_QUEUE_BEACON, &qparam);
2491         }
2492 #endif
2493
2494         if (wpa_s->mlme.ssid_len != params->ssid_len ||
2495             os_memcmp(wpa_s->mlme.ssid, params->ssid, params->ssid_len) != 0)
2496                 wpa_s->mlme.prev_bssid_set = 0;
2497         os_memcpy(wpa_s->mlme.ssid, params->ssid, params->ssid_len);
2498         os_memset(wpa_s->mlme.ssid + params->ssid_len, 0,
2499                   MAX_SSID_LEN - params->ssid_len);
2500         wpa_s->mlme.ssid_len = params->ssid_len;
2501         wpa_s->mlme.ssid_set = 1;
2502
2503         os_free(wpa_s->mlme.extra_ie);
2504         if (params->wpa_ie == NULL || params->wpa_ie_len == 0) {
2505                 wpa_s->mlme.extra_ie = NULL;
2506                 wpa_s->mlme.extra_ie_len = 0;
2507         } else {
2508                 wpa_s->mlme.extra_ie = os_malloc(params->wpa_ie_len);
2509                 if (wpa_s->mlme.extra_ie == NULL) {
2510                         wpa_s->mlme.extra_ie_len = 0;
2511                         return -1;
2512                 }
2513                 os_memcpy(wpa_s->mlme.extra_ie, params->wpa_ie,
2514                           params->wpa_ie_len);
2515                 wpa_s->mlme.extra_ie_len = params->wpa_ie_len;
2516         }
2517
2518         wpa_s->mlme.key_mgmt = params->key_mgmt_suite;
2519
2520         ieee80211_sta_set_channel(wpa_s, wpa_s->mlme.phymode,
2521                                   wpa_s->mlme.channel, wpa_s->mlme.freq);
2522
2523         if (params->mode == 1 && !wpa_s->mlme.bssid_set) {
2524                 os_get_time(&wpa_s->mlme.ibss_join_req);
2525                 wpa_s->mlme.state = IEEE80211_IBSS_SEARCH;
2526                 return ieee80211_sta_find_ibss(wpa_s);
2527         }
2528
2529         if (wpa_s->mlme.bssid_set)
2530                 ieee80211_sta_new_auth(wpa_s);
2531
2532         return 0;
2533 }
2534
2535
2536 static void ieee80211_sta_save_oper_chan(struct wpa_supplicant *wpa_s)
2537 {
2538         wpa_s->mlme.scan_oper_channel = wpa_s->mlme.channel;
2539         wpa_s->mlme.scan_oper_freq = wpa_s->mlme.freq;
2540         wpa_s->mlme.scan_oper_phymode = wpa_s->mlme.phymode;
2541 }
2542
2543
2544 static int ieee80211_sta_restore_oper_chan(struct wpa_supplicant *wpa_s)
2545 {
2546         wpa_s->mlme.channel = wpa_s->mlme.scan_oper_channel;
2547         wpa_s->mlme.freq = wpa_s->mlme.scan_oper_freq;
2548         wpa_s->mlme.phymode = wpa_s->mlme.scan_oper_phymode;
2549         if (wpa_s->mlme.freq == 0)
2550                 return 0;
2551         return ieee80211_sta_set_channel(wpa_s, wpa_s->mlme.phymode,
2552                                          wpa_s->mlme.channel,
2553                                          wpa_s->mlme.freq);
2554 }
2555
2556
2557 static int ieee80211_active_scan(struct wpa_supplicant *wpa_s)
2558 {
2559         size_t m;
2560         int c;
2561
2562         for (m = 0; m < wpa_s->mlme.num_modes; m++) {
2563                 struct wpa_hw_modes *mode = &wpa_s->mlme.modes[m];
2564                 if ((int) mode->mode != (int) wpa_s->mlme.phymode)
2565                         continue;
2566                 for (c = 0; c < mode->num_channels; c++) {
2567                         struct wpa_channel_data *chan = &mode->channels[c];
2568                         if (chan->flag & WPA_CHAN_W_SCAN &&
2569                             chan->chan == wpa_s->mlme.channel) {
2570                                 if (chan->flag & WPA_CHAN_W_ACTIVE_SCAN)
2571                                         return 1;
2572                                 break;
2573                         }
2574                 }
2575         }
2576
2577         return 0;
2578 }
2579
2580
2581 static void ieee80211_sta_scan_timer(void *eloop_ctx, void *timeout_ctx)
2582 {
2583         struct wpa_supplicant *wpa_s = eloop_ctx;
2584         struct wpa_hw_modes *mode;
2585         struct wpa_channel_data *chan;
2586         int skip = 0;
2587         int timeout = 0;
2588         struct wpa_ssid *ssid = wpa_s->current_ssid;
2589         int adhoc;
2590
2591         if (!wpa_s->mlme.sta_scanning || wpa_s->mlme.modes == NULL)
2592                 return;
2593
2594         adhoc = ssid && ssid->mode == 1;
2595
2596         switch (wpa_s->mlme.scan_state) {
2597         case SCAN_SET_CHANNEL:
2598                 mode = &wpa_s->mlme.modes[wpa_s->mlme.scan_hw_mode_idx];
2599                 if (wpa_s->mlme.scan_hw_mode_idx >=
2600                     (int) wpa_s->mlme.num_modes ||
2601                     (wpa_s->mlme.scan_hw_mode_idx + 1 ==
2602                      (int) wpa_s->mlme.num_modes
2603                      && wpa_s->mlme.scan_channel_idx >= mode->num_channels)) {
2604                         if (ieee80211_sta_restore_oper_chan(wpa_s)) {
2605                                 wpa_printf(MSG_DEBUG, "MLME: failed to "
2606                                            "restore operational channel after "
2607                                            "scan");
2608                         }
2609                         wpa_printf(MSG_DEBUG, "MLME: scan completed");
2610                         wpa_s->mlme.sta_scanning = 0;
2611                         os_get_time(&wpa_s->mlme.last_scan_completed);
2612                         wpa_supplicant_event(wpa_s, EVENT_SCAN_RESULTS, NULL);
2613                         if (adhoc) {
2614                                 if (!wpa_s->mlme.bssid_set ||
2615                                     (wpa_s->mlme.state ==
2616                                      IEEE80211_IBSS_JOINED &&
2617                                      !ieee80211_sta_active_ibss(wpa_s)))
2618                                         ieee80211_sta_find_ibss(wpa_s);
2619                         }
2620                         return;
2621                 }
2622                 skip = !(wpa_s->mlme.hw_modes & (1 << mode->mode));
2623                 chan = &mode->channels[wpa_s->mlme.scan_channel_idx];
2624                 if (!(chan->flag & WPA_CHAN_W_SCAN) ||
2625                     (adhoc && !(chan->flag & WPA_CHAN_W_IBSS)) ||
2626                     (wpa_s->mlme.hw_modes & (1 << WPA_MODE_IEEE80211G) &&
2627                      mode->mode == WPA_MODE_IEEE80211B &&
2628                      wpa_s->mlme.scan_skip_11b))
2629                         skip = 1;
2630
2631                 if (!skip) {
2632                         wpa_printf(MSG_MSGDUMP,
2633                                    "MLME: scan channel %d (%d MHz)",
2634                                    chan->chan, chan->freq);
2635
2636                         wpa_s->mlme.channel = chan->chan;
2637                         wpa_s->mlme.freq = chan->freq;
2638                         wpa_s->mlme.phymode = mode->mode;
2639                         if (ieee80211_sta_set_channel(wpa_s, mode->mode,
2640                                                       chan->chan, chan->freq))
2641                         {
2642                                 wpa_printf(MSG_DEBUG, "MLME: failed to set "
2643                                            "channel %d (%d MHz) for scan",
2644                                            chan->chan, chan->freq);
2645                                 skip = 1;
2646                         }
2647                 }
2648
2649                 wpa_s->mlme.scan_channel_idx++;
2650                 if (wpa_s->mlme.scan_channel_idx >=
2651                     wpa_s->mlme.modes[wpa_s->mlme.scan_hw_mode_idx].
2652                     num_channels) {
2653                         wpa_s->mlme.scan_hw_mode_idx++;
2654                         wpa_s->mlme.scan_channel_idx = 0;
2655                 }
2656
2657                 if (skip) {
2658                         timeout = 0;
2659                         break;
2660                 }
2661
2662                 timeout = IEEE80211_PROBE_DELAY;
2663                 wpa_s->mlme.scan_state = SCAN_SEND_PROBE;
2664                 break;
2665         case SCAN_SEND_PROBE:
2666                 if (ieee80211_active_scan(wpa_s)) {
2667                         ieee80211_send_probe_req(wpa_s, NULL,
2668                                                  wpa_s->mlme.scan_ssid,
2669                                                  wpa_s->mlme.scan_ssid_len);
2670                         timeout = IEEE80211_CHANNEL_TIME;
2671                 } else {
2672                         timeout = IEEE80211_PASSIVE_CHANNEL_TIME;
2673                 }
2674                 wpa_s->mlme.scan_state = SCAN_SET_CHANNEL;
2675                 break;
2676         }
2677
2678         eloop_register_timeout(timeout / 1000, 1000 * (timeout % 1000),
2679                                ieee80211_sta_scan_timer, wpa_s, NULL);
2680 }
2681
2682
2683 int ieee80211_sta_req_scan(struct wpa_supplicant *wpa_s, const u8 *ssid,
2684                            size_t ssid_len)
2685 {
2686         if (ssid_len > MAX_SSID_LEN)
2687                 return -1;
2688
2689         /* MLME-SCAN.request (page 118)  page 144 (11.1.3.1)
2690          * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS
2691          * BSSID: MACAddress
2692          * SSID
2693          * ScanType: ACTIVE, PASSIVE
2694          * ProbeDelay: delay (in microseconds) to be used prior to transmitting
2695          *    a Probe frame during active scanning
2696          * ChannelList
2697          * MinChannelTime (>= ProbeDelay), in TU
2698          * MaxChannelTime: (>= MinChannelTime), in TU
2699          */
2700
2701          /* MLME-SCAN.confirm
2702           * BSSDescriptionSet
2703           * ResultCode: SUCCESS, INVALID_PARAMETERS
2704          */
2705
2706         /* TODO: if assoc, move to power save mode for the duration of the
2707          * scan */
2708
2709         if (wpa_s->mlme.sta_scanning)
2710                 return -1;
2711
2712         wpa_printf(MSG_DEBUG, "MLME: starting scan");
2713
2714         ieee80211_sta_save_oper_chan(wpa_s);
2715
2716         wpa_s->mlme.sta_scanning = 1;
2717         /* TODO: stop TX queue? */
2718
2719         if (ssid) {
2720                 wpa_s->mlme.scan_ssid_len = ssid_len;
2721                 os_memcpy(wpa_s->mlme.scan_ssid, ssid, ssid_len);
2722         } else
2723                 wpa_s->mlme.scan_ssid_len = 0;
2724         wpa_s->mlme.scan_skip_11b = 1; /* FIX: clear this is 11g is not
2725                                         * supported */
2726         wpa_s->mlme.scan_state = SCAN_SET_CHANNEL;
2727         wpa_s->mlme.scan_hw_mode_idx = 0;
2728         wpa_s->mlme.scan_channel_idx = 0;
2729         eloop_register_timeout(0, 1, ieee80211_sta_scan_timer, wpa_s, NULL);
2730
2731         return 0;
2732 }
2733
2734
2735 struct wpa_scan_results *
2736 ieee80211_sta_get_scan_results(struct wpa_supplicant *wpa_s)
2737 {
2738         size_t ap_num = 0;
2739         struct wpa_scan_results *res;
2740         struct wpa_scan_res *r;
2741         struct ieee80211_sta_bss *bss;
2742
2743         res = os_zalloc(sizeof(*res));
2744         for (bss = wpa_s->mlme.sta_bss_list; bss; bss = bss->next)
2745                 ap_num++;
2746         res->res = os_zalloc(ap_num * sizeof(struct wpa_scan_res *));
2747         if (res->res == NULL) {
2748                 os_free(res);
2749                 return NULL;
2750         }
2751
2752         for (bss = wpa_s->mlme.sta_bss_list; bss; bss = bss->next) {
2753                 r = os_zalloc(sizeof(*r) + bss->ie_len);
2754                 if (r == NULL)
2755                         break;
2756                 os_memcpy(r->bssid, bss->bssid, ETH_ALEN);
2757                 r->freq = bss->freq;
2758                 r->beacon_int = bss->beacon_int;
2759                 r->caps = bss->capability;
2760                 r->level = bss->rssi;
2761                 r->tsf = bss->timestamp;
2762                 if (bss->ie) {
2763                         r->ie_len = bss->ie_len;
2764                         os_memcpy(r + 1, bss->ie, bss->ie_len);
2765                 }
2766
2767                 res->res[res->num++] = r;
2768         }
2769
2770         return res;
2771 }
2772
2773
2774 #if 0 /* FIX */
2775 struct sta_info * ieee80211_ibss_add_sta(struct wpa_supplicant *wpa_s,
2776                                          struct sk_buff *skb, u8 *bssid,
2777                                          u8 *addr)
2778 {
2779         struct ieee80211_local *local = dev->priv;
2780         struct list_head *ptr;
2781         struct sta_info *sta;
2782         struct wpa_supplicant *sta_dev = NULL;
2783
2784         /* TODO: Could consider removing the least recently used entry and
2785          * allow new one to be added. */
2786         if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) {
2787                 if (net_ratelimit()) {
2788                         wpa_printf(MSG_DEBUG, "MLME: No room for a new IBSS "
2789                                    "STA entry " MACSTR, MAC2STR(addr));
2790                 }
2791                 return NULL;
2792         }
2793
2794         spin_lock_bh(&local->sub_if_lock);
2795         list_for_each(ptr, &local->sub_if_list) {
2796                 sdata = list_entry(ptr, struct ieee80211_sub_if_data, list);
2797                 if (sdata->type == IEEE80211_SUB_IF_TYPE_STA &&
2798                     os_memcmp(bssid, sdata->u.sta.bssid, ETH_ALEN) == 0) {
2799                         sta_dev = sdata->dev;
2800                         break;
2801                 }
2802         }
2803         spin_unlock_bh(&local->sub_if_lock);
2804
2805         if (sta_dev == NULL)
2806                 return NULL;
2807
2808         wpa_printf(MSG_DEBUG, "MLME: Adding new IBSS station " MACSTR
2809                    " (dev=%s)", MAC2STR(addr), sta_dev->name);
2810
2811         sta = sta_info_add(wpa_s, addr);
2812         if (sta == NULL) {
2813                 return NULL;
2814         }
2815
2816         sta->dev = sta_dev;
2817         sta->supp_rates = wpa_s->mlme.supp_rates_bits;
2818
2819         rate_control_rate_init(local, sta);
2820
2821         return sta; /* caller will call sta_info_release() */
2822 }
2823 #endif
2824
2825
2826 int ieee80211_sta_deauthenticate(struct wpa_supplicant *wpa_s, u16 reason)
2827 {
2828         wpa_printf(MSG_DEBUG, "MLME: deauthenticate(reason=%d)", reason);
2829
2830         ieee80211_send_deauth(wpa_s, reason);
2831         ieee80211_set_associated(wpa_s, 0);
2832         return 0;
2833 }
2834
2835
2836 int ieee80211_sta_disassociate(struct wpa_supplicant *wpa_s, u16 reason)
2837 {
2838         wpa_printf(MSG_DEBUG, "MLME: disassociate(reason=%d)", reason);
2839
2840         if (!wpa_s->mlme.associated)
2841                 return -1;
2842
2843         ieee80211_send_disassoc(wpa_s, reason);
2844         ieee80211_set_associated(wpa_s, 0);
2845         return 0;
2846 }
2847
2848
2849 void ieee80211_sta_rx(struct wpa_supplicant *wpa_s, const u8 *buf, size_t len,
2850                       struct ieee80211_rx_status *rx_status)
2851 {
2852         struct ieee80211_mgmt *mgmt;
2853         u16 fc;
2854         const u8 *pos;
2855
2856         /* wpa_hexdump(MSG_MSGDUMP, "MLME: Received frame", buf, len); */
2857
2858         if (wpa_s->mlme.sta_scanning) {
2859                 ieee80211_sta_rx_scan(wpa_s, buf, len, rx_status);
2860                 return;
2861         }
2862
2863         if (len < 24)
2864                 return;
2865
2866         mgmt = (struct ieee80211_mgmt *) buf;
2867         fc = le_to_host16(mgmt->frame_control);
2868
2869         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT)
2870                 ieee80211_sta_rx_mgmt(wpa_s, buf, len, rx_status);
2871         else if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_DATA) {
2872                 if ((fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) !=
2873                     WLAN_FC_FROMDS)
2874                         return;
2875                 /* mgmt->sa is actually BSSID for FromDS data frames */
2876                 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) != 0)
2877                         return;
2878                 /* Skip IEEE 802.11 and LLC headers */
2879                 pos = buf + 24 + 6;
2880                 if (WPA_GET_BE16(pos) != ETH_P_EAPOL)
2881                         return;
2882                 pos += 2;
2883                 /* mgmt->bssid is actually BSSID for SA data frames */
2884                 wpa_supplicant_rx_eapol(wpa_s, mgmt->bssid,
2885                                         pos, buf + len - pos);
2886         }
2887 }
2888
2889
2890 void ieee80211_sta_free_hw_features(struct wpa_hw_modes *hw_features,
2891                                     size_t num_hw_features)
2892 {
2893         size_t i;
2894
2895         if (hw_features == NULL)
2896                 return;
2897
2898         for (i = 0; i < num_hw_features; i++) {
2899                 os_free(hw_features[i].channels);
2900                 os_free(hw_features[i].rates);
2901         }
2902
2903         os_free(hw_features);
2904 }
2905
2906
2907 int ieee80211_sta_init(struct wpa_supplicant *wpa_s)
2908 {
2909         u16 num_modes, flags;
2910
2911         wpa_s->mlme.modes = wpa_drv_get_hw_feature_data(wpa_s, &num_modes,
2912                                                         &flags);
2913         if (wpa_s->mlme.modes == NULL) {
2914                 wpa_printf(MSG_ERROR, "MLME: Failed to read supported "
2915                            "channels and rates from the driver");
2916                 return -1;
2917         }
2918
2919         wpa_s->mlme.num_modes = num_modes;
2920
2921         wpa_s->mlme.hw_modes = 1 << WPA_MODE_IEEE80211A;
2922         wpa_s->mlme.hw_modes |= 1 << WPA_MODE_IEEE80211B;
2923         wpa_s->mlme.hw_modes |= 1 << WPA_MODE_IEEE80211G;
2924
2925         return 0;
2926 }
2927
2928
2929 void ieee80211_sta_deinit(struct wpa_supplicant *wpa_s)
2930 {
2931         eloop_cancel_timeout(ieee80211_sta_timer, wpa_s, NULL);
2932         eloop_cancel_timeout(ieee80211_sta_scan_timer, wpa_s, NULL);
2933         os_free(wpa_s->mlme.extra_ie);
2934         wpa_s->mlme.extra_ie = NULL;
2935         os_free(wpa_s->mlme.extra_probe_ie);
2936         wpa_s->mlme.extra_probe_ie = NULL;
2937         os_free(wpa_s->mlme.assocreq_ies);
2938         wpa_s->mlme.assocreq_ies = NULL;
2939         os_free(wpa_s->mlme.assocresp_ies);
2940         wpa_s->mlme.assocresp_ies = NULL;
2941         ieee80211_bss_list_deinit(wpa_s);
2942         ieee80211_sta_free_hw_features(wpa_s->mlme.modes,
2943                                        wpa_s->mlme.num_modes);
2944 #ifdef CONFIG_IEEE80211R
2945         os_free(wpa_s->mlme.ft_ies);
2946         wpa_s->mlme.ft_ies = NULL;
2947         wpa_s->mlme.ft_ies_len = 0;
2948 #endif /* CONFIG_IEEE80211R */
2949 }
2950
2951
2952 #ifdef CONFIG_IEEE80211R
2953
2954 int ieee80211_sta_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
2955                                 const u8 *ies, size_t ies_len)
2956 {
2957         if (md == NULL) {
2958                 wpa_printf(MSG_DEBUG, "MLME: Clear FT mobility domain");
2959                 os_memset(wpa_s->mlme.current_md, 0, MOBILITY_DOMAIN_ID_LEN);
2960         } else {
2961                 wpa_printf(MSG_DEBUG, "MLME: Update FT IEs for MD " MACSTR,
2962                            MAC2STR(md));
2963                 os_memcpy(wpa_s->mlme.current_md, md, MOBILITY_DOMAIN_ID_LEN);
2964         }
2965
2966         wpa_hexdump(MSG_DEBUG, "MLME: FT IEs", ies, ies_len);
2967         os_free(wpa_s->mlme.ft_ies);
2968         wpa_s->mlme.ft_ies = os_malloc(ies_len);
2969         if (wpa_s->mlme.ft_ies == NULL)
2970                 return -1;
2971         os_memcpy(wpa_s->mlme.ft_ies, ies, ies_len);
2972         wpa_s->mlme.ft_ies_len = ies_len;
2973
2974         return 0;
2975 }
2976
2977
2978 int ieee80211_sta_send_ft_action(struct wpa_supplicant *wpa_s, u8 action,
2979                                  const u8 *target_ap,
2980                                  const u8 *ies, size_t ies_len)
2981 {
2982         u8 *buf;
2983         size_t len;
2984         struct ieee80211_mgmt *mgmt;
2985         int res;
2986
2987         /*
2988          * Action frame payload:
2989          * Category[1] = 6 (Fast BSS Transition)
2990          * Action[1] = 1 (Fast BSS Transition Request)
2991          * STA Address
2992          * Target AP Address
2993          * FT IEs
2994          */
2995
2996         buf = os_zalloc(sizeof(*mgmt) + ies_len);
2997         if (buf == NULL) {
2998                 wpa_printf(MSG_DEBUG, "MLME: Failed to allocate buffer for "
2999                            "FT action frame");
3000                 return -1;
3001         }
3002
3003         mgmt = (struct ieee80211_mgmt *) buf;
3004         len = 24;
3005         os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
3006         os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
3007         os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
3008         mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
3009                                            WLAN_FC_STYPE_ACTION);
3010         mgmt->u.action.category = WLAN_ACTION_FT;
3011         mgmt->u.action.u.ft_action_req.action = action;
3012         os_memcpy(mgmt->u.action.u.ft_action_req.sta_addr, wpa_s->own_addr,
3013                   ETH_ALEN);
3014         os_memcpy(mgmt->u.action.u.ft_action_req.target_ap_addr, target_ap,
3015                   ETH_ALEN);
3016         os_memcpy(mgmt->u.action.u.ft_action_req.variable, ies, ies_len);
3017         len += 1 + sizeof(mgmt->u.action.u.ft_action_req) + ies_len;
3018
3019         wpa_printf(MSG_DEBUG, "MLME: Send FT Action Frame: Action=%d "
3020                    "Target AP=" MACSTR " body_len=%d",
3021                    action, MAC2STR(target_ap), ies_len);
3022
3023         res = ieee80211_sta_tx(wpa_s, buf, len);
3024         os_free(buf);
3025
3026         return res;
3027 }
3028
3029 #endif /* CONFIG_IEEE80211R */
3030
3031
3032 int ieee80211_sta_set_probe_req_ie(struct wpa_supplicant *wpa_s, const u8 *ies,
3033                                    size_t ies_len)
3034 {
3035         os_free(wpa_s->mlme.extra_probe_ie);
3036         wpa_s->mlme.extra_probe_ie = NULL;
3037         wpa_s->mlme.extra_probe_ie_len = 0;
3038
3039         if (ies == NULL)
3040                 return 0;
3041
3042         wpa_s->mlme.extra_probe_ie = os_malloc(ies_len);
3043         if (wpa_s->mlme.extra_probe_ie == NULL)
3044                 return -1;
3045
3046         os_memcpy(wpa_s->mlme.extra_probe_ie, ies, ies_len);
3047         wpa_s->mlme.extra_probe_ie_len = ies_len;
3048
3049         return 0;
3050 }