www.project-moonshot.org Git - mech_eap.orig/blob - 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 "notify.h"
  24 #include "driver_i.h"
  25 #include "rsn_supp/wpa.h"
  26 #include "common/ieee802_11_defs.h"
  27 #include "common/ieee802_11_common.h"
  28 #include "mlme.h"
  29
  30
  31 /* Timeouts and intervals in milliseconds */
  32 #define IEEE80211_AUTH_TIMEOUT (200)
  33 #define IEEE80211_AUTH_MAX_TRIES 3
  34 #define IEEE80211_ASSOC_TIMEOUT (200)
  35 #define IEEE80211_ASSOC_MAX_TRIES 3
  36 #define IEEE80211_MONITORING_INTERVAL (2000)
  37 #define IEEE80211_PROBE_INTERVAL (60000)
  38 #define IEEE80211_RETRY_AUTH_INTERVAL (1000)
  39 #define IEEE80211_SCAN_INTERVAL (2000)
  40 #define IEEE80211_SCAN_INTERVAL_SLOW (15000)
  41 #define IEEE80211_IBSS_JOIN_TIMEOUT (20000)
  42
  43 #define IEEE80211_PROBE_DELAY (33)
  44 #define IEEE80211_CHANNEL_TIME (33)
  45 #define IEEE80211_PASSIVE_CHANNEL_TIME (200)
  46 #define IEEE80211_SCAN_RESULT_EXPIRE (10000)
  47 #define IEEE80211_IBSS_MERGE_INTERVAL (30000)
  48 #define IEEE80211_IBSS_INACTIVITY_LIMIT (60000)
  49
  50 #define IEEE80211_IBSS_MAX_STA_ENTRIES 128
  51
  52
  53 #define IEEE80211_FC(type, stype) host_to_le16((type << 2) | (stype << 4))
  54
  55
  56 struct ieee80211_sta_bss {
  57         struct ieee80211_sta_bss *next;
  58         struct ieee80211_sta_bss *hnext;
  59
  60         u8 bssid[ETH_ALEN];
  61         u8 ssid[MAX_SSID_LEN];
  62         size_t ssid_len;
  63         u16 capability; /* host byte order */
  64         int hw_mode;
  65         int channel;
  66         int freq;
  67         int rssi;
  68         u8 *ie;
  69         size_t ie_len;
  70         u8 *wpa_ie;
  71         size_t wpa_ie_len;
  72         u8 *rsn_ie;
  73         size_t rsn_ie_len;
  74         u8 *wmm_ie;
  75         size_t wmm_ie_len;
  76         u8 *mdie;
  77         size_t mdie_len;
  78 #define IEEE80211_MAX_SUPP_RATES 32
  79         u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
  80         size_t supp_rates_len;
  81         int beacon_int;
  82         u64 timestamp;
  83
  84         int probe_resp;
  85         struct os_time last_update;
  86 };
  87
  88
  89 static void ieee80211_send_probe_req(struct wpa_supplicant *wpa_s,
  90                                      const u8 *dst,
  91                                      const u8 *ssid, size_t ssid_len);
  92 static struct ieee80211_sta_bss *
  93 ieee80211_bss_get(struct wpa_supplicant *wpa_s, const u8 *bssid);
  94 static int ieee80211_sta_find_ibss(struct wpa_supplicant *wpa_s);
  95 static int ieee80211_sta_wep_configured(struct wpa_supplicant *wpa_s);
  96 static void ieee80211_sta_timer(void *eloop_ctx, void *timeout_ctx);
  97 static void ieee80211_sta_scan_timer(void *eloop_ctx, void *timeout_ctx);
  98 static void ieee80211_build_tspec(struct wpabuf *buf);
  99 static int ieee80211_sta_set_probe_req_ie(struct wpa_supplicant *wpa_s,
 100                                           const u8 *ies, size_t ies_len);
 101
 102
 103 static int ieee80211_sta_set_channel(struct wpa_supplicant *wpa_s,
 104                                      enum hostapd_hw_mode phymode, int chan,
 105                                      int freq)
 106 {
 107         size_t i;
 108         struct hostapd_hw_modes *mode;
 109
 110         for (i = 0; i < wpa_s->mlme.num_modes; i++) {
 111                 mode = &wpa_s->mlme.modes[i];
 112                 if (mode->mode == phymode) {
 113                         wpa_s->mlme.curr_rates = mode->rates;
 114                         wpa_s->mlme.num_curr_rates = mode->num_rates;
 115                         break;
 116                 }
 117         }
 118
 119         return wpa_drv_set_channel(wpa_s, phymode, chan, freq);
 120 }
 121
 122
 123 static int ecw2cw(int ecw)
 124 {
 125         int cw = 1;
 126         while (ecw > 0) {
 127                 cw <<= 1;
 128                 ecw--;
 129         }
 130         return cw - 1;
 131 }
 132
 133
 134 static void ieee80211_sta_wmm_params(struct wpa_supplicant *wpa_s,
 135                                      const u8 *wmm_param, size_t wmm_param_len)
 136 {
 137         size_t left;
 138         int count;
 139         const u8 *pos;
 140         u8 wmm_acm;
 141
 142         if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
 143                 return;
 144         count = wmm_param[6] & 0x0f;
 145         if (count == wpa_s->mlme.wmm_last_param_set)
 146                 return;
 147         wpa_s->mlme.wmm_last_param_set = count;
 148
 149         pos = wmm_param + 8;
 150         left = wmm_param_len - 8;
 151
 152         wmm_acm = 0;
 153         for (; left >= 4; left -= 4, pos += 4) {
 154                 int aci = (pos[0] >> 5) & 0x03;
 155                 int acm = (pos[0] >> 4) & 0x01;
 156                 int aifs, cw_max, cw_min, burst_time;
 157
 158                 switch (aci) {
 159                 case 1: /* AC_BK */
 160                         if (acm)
 161                                 wmm_acm |= BIT(1) | BIT(2); /* BK/- */
 162                         break;
 163                 case 2: /* AC_VI */
 164                         if (acm)
 165                                 wmm_acm |= BIT(4) | BIT(5); /* CL/VI */
 166                         break;
 167                 case 3: /* AC_VO */
 168                         if (acm)
 169                                 wmm_acm |= BIT(6) | BIT(7); /* VO/NC */
 170                         break;
 171                 case 0: /* AC_BE */
 172                 default:
 173                         if (acm)
 174                                 wmm_acm |= BIT(0) | BIT(3); /* BE/EE */
 175                         break;
 176                 }
 177
 178                 aifs = pos[0] & 0x0f;
 179                 cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
 180                 cw_min = ecw2cw(pos[1] & 0x0f);
 181                 /* TXOP is in units of 32 usec; burst_time in 0.1 ms */
 182                 burst_time = (pos[2] | (pos[3] << 8)) * 32 / 100;
 183                 wpa_printf(MSG_DEBUG, "MLME: WMM aci=%d acm=%d aifs=%d "
 184                            "cWmin=%d cWmax=%d burst=%d",
 185                            aci, acm, aifs, cw_min, cw_max, burst_time);
 186                 /* TODO: driver configuration */
 187         }
 188 }
 189
 190
 191 static void ieee80211_set_associated(struct wpa_supplicant *wpa_s, int assoc)
 192 {
 193         if (wpa_s->mlme.associated == assoc && !assoc)
 194                 return;
 195
 196         wpa_s->mlme.associated = assoc;
 197
 198         if (assoc) {
 199                 union wpa_event_data data;
 200                 os_memset(&data, 0, sizeof(data));
 201                 wpa_s->mlme.prev_bssid_set = 1;
 202                 os_memcpy(wpa_s->mlme.prev_bssid, wpa_s->bssid, ETH_ALEN);
 203                 data.assoc_info.req_ies = wpa_s->mlme.assocreq_ies;
 204                 data.assoc_info.req_ies_len = wpa_s->mlme.assocreq_ies_len;
 205                 data.assoc_info.resp_ies = wpa_s->mlme.assocresp_ies;
 206                 data.assoc_info.resp_ies_len = wpa_s->mlme.assocresp_ies_len;
 207                 data.assoc_info.freq = wpa_s->mlme.freq;
 208                 wpa_supplicant_event(wpa_s, EVENT_ASSOC, &data);
 209         } else {
 210                 wpa_supplicant_event(wpa_s, EVENT_DISASSOC, NULL);
 211         }
 212         os_get_time(&wpa_s->mlme.last_probe);
 213 }
 214
 215
 216 static int ieee80211_sta_tx(struct wpa_supplicant *wpa_s, const u8 *buf,
 217                             size_t len)
 218 {
 219         return wpa_drv_send_mlme(wpa_s, buf, len);
 220 }
 221
 222
 223 static void ieee80211_send_auth(struct wpa_supplicant *wpa_s,
 224                                 int transaction, const u8 *extra,
 225                                 size_t extra_len, int encrypt)
 226 {
 227         u8 *buf;
 228         size_t len;
 229         struct ieee80211_mgmt *mgmt;
 230
 231         buf = os_malloc(sizeof(*mgmt) + 6 + extra_len);
 232         if (buf == NULL) {
 233                 wpa_printf(MSG_DEBUG, "MLME: failed to allocate buffer for "
 234                            "auth frame");
 235                 return;
 236         }
 237
 238         mgmt = (struct ieee80211_mgmt *) buf;
 239         len = 24 + 6;
 240         os_memset(mgmt, 0, 24 + 6);
 241         mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 242                                            WLAN_FC_STYPE_AUTH);
 243         if (encrypt)
 244                 mgmt->frame_control |= host_to_le16(WLAN_FC_ISWEP);
 245         os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
 246         os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
 247         os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
 248         mgmt->u.auth.auth_alg = host_to_le16(wpa_s->mlme.auth_alg);
 249         mgmt->u.auth.auth_transaction = host_to_le16(transaction);
 250         wpa_s->mlme.auth_transaction = transaction + 1;
 251         mgmt->u.auth.status_code = host_to_le16(0);
 252         if (extra) {
 253                 os_memcpy(buf + len, extra, extra_len);
 254                 len += extra_len;
 255         }
 256
 257         ieee80211_sta_tx(wpa_s, buf, len);
 258         os_free(buf);
 259 }
 260
 261
 262 static void ieee80211_reschedule_timer(struct wpa_supplicant *wpa_s, int ms)
 263 {
 264         eloop_cancel_timeout(ieee80211_sta_timer, wpa_s, NULL);
 265         eloop_register_timeout(ms / 1000, 1000 * (ms % 1000),
 266                                ieee80211_sta_timer, wpa_s, NULL);
 267 }
 268
 269
 270 static void ieee80211_authenticate(struct wpa_supplicant *wpa_s)
 271 {
 272         u8 *extra;
 273         size_t extra_len;
 274
 275         wpa_s->mlme.auth_tries++;
 276         if (wpa_s->mlme.auth_tries > IEEE80211_AUTH_MAX_TRIES) {
 277                 wpa_printf(MSG_DEBUG, "MLME: authentication with AP " MACSTR
 278                            " timed out", MAC2STR(wpa_s->bssid));
 279                 return;
 280         }
 281
 282         wpa_s->mlme.state = IEEE80211_AUTHENTICATE;
 283         wpa_printf(MSG_DEBUG, "MLME: authenticate with AP " MACSTR,
 284                    MAC2STR(wpa_s->bssid));
 285
 286         extra = NULL;
 287         extra_len = 0;
 288
 289 #ifdef CONFIG_IEEE80211R
 290         if ((wpa_s->mlme.key_mgmt == KEY_MGMT_FT_802_1X ||
 291              wpa_s->mlme.key_mgmt == KEY_MGMT_FT_PSK) &&
 292             wpa_s->mlme.ft_ies) {
 293                 struct ieee80211_sta_bss *bss;
 294                 struct rsn_mdie *mdie = NULL;
 295                 bss = ieee80211_bss_get(wpa_s, wpa_s->bssid);
 296                 if (bss && bss->mdie_len >= 2 + sizeof(*mdie))
 297                         mdie = (struct rsn_mdie *) (bss->mdie + 2);
 298                 if (mdie &&
 299                     os_memcmp(mdie->mobility_domain, wpa_s->mlme.current_md,
 300                               MOBILITY_DOMAIN_ID_LEN) == 0) {
 301                         wpa_printf(MSG_DEBUG, "MLME: Trying to use FT "
 302                                    "over-the-air");
 303                         wpa_s->mlme.auth_alg = WLAN_AUTH_FT;
 304                         extra = wpa_s->mlme.ft_ies;
 305                         extra_len = wpa_s->mlme.ft_ies_len;
 306                 }
 307         }
 308 #endif /* CONFIG_IEEE80211R */
 309
 310         ieee80211_send_auth(wpa_s, 1, extra, extra_len, 0);
 311
 312         ieee80211_reschedule_timer(wpa_s, IEEE80211_AUTH_TIMEOUT);
 313 }
 314
 315
 316 static void ieee80211_send_assoc(struct wpa_supplicant *wpa_s)
 317 {
 318         struct ieee80211_mgmt *mgmt;
 319         u8 *pos, *ies, *buf;
 320         int i, len;
 321         u16 capab;
 322         struct ieee80211_sta_bss *bss;
 323         int wmm = 0;
 324         size_t blen, buflen;
 325
 326         if (wpa_s->mlme.curr_rates == NULL) {
 327                 wpa_printf(MSG_DEBUG, "MLME: curr_rates not set for assoc");
 328                 return;
 329         }
 330
 331         buflen = sizeof(*mgmt) + 200 + wpa_s->mlme.extra_ie_len +
 332                 wpa_s->mlme.ssid_len;
 333 #ifdef CONFIG_IEEE80211R
 334         if (wpa_s->mlme.ft_ies)
 335                 buflen += wpa_s->mlme.ft_ies_len;
 336 #endif /* CONFIG_IEEE80211R */
 337         buf = os_malloc(buflen);
 338         if (buf == NULL) {
 339                 wpa_printf(MSG_DEBUG, "MLME: failed to allocate buffer for "
 340                            "assoc frame");
 341                 return;
 342         }
 343         blen = 0;
 344
 345         capab = wpa_s->mlme.capab;
 346         if (wpa_s->mlme.phymode == HOSTAPD_MODE_IEEE80211G) {
 347                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME |
 348                         WLAN_CAPABILITY_SHORT_PREAMBLE;
 349         }
 350         bss = ieee80211_bss_get(wpa_s, wpa_s->bssid);
 351         if (bss) {
 352                 if (bss->capability & WLAN_CAPABILITY_PRIVACY)
 353                         capab |= WLAN_CAPABILITY_PRIVACY;
 354                 if (bss->wmm_ie) {
 355                         wmm = 1;
 356                 }
 357         }
 358
 359         mgmt = (struct ieee80211_mgmt *) buf;
 360         blen += 24;
 361         os_memset(mgmt, 0, 24);
 362         os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
 363         os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
 364         os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
 365
 366         if (wpa_s->mlme.prev_bssid_set) {
 367                 blen += 10;
 368                 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 369                                                    WLAN_FC_STYPE_REASSOC_REQ);
 370                 mgmt->u.reassoc_req.capab_info = host_to_le16(capab);
 371                 mgmt->u.reassoc_req.listen_interval = host_to_le16(1);
 372                 os_memcpy(mgmt->u.reassoc_req.current_ap,
 373                           wpa_s->mlme.prev_bssid,
 374                           ETH_ALEN);
 375         } else {
 376                 blen += 4;
 377                 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 378                                                    WLAN_FC_STYPE_ASSOC_REQ);
 379                 mgmt->u.assoc_req.capab_info = host_to_le16(capab);
 380                 mgmt->u.assoc_req.listen_interval = host_to_le16(1);
 381         }
 382
 383         /* SSID */
 384         ies = pos = buf + blen;
 385         blen += 2 + wpa_s->mlme.ssid_len;
 386         *pos++ = WLAN_EID_SSID;
 387         *pos++ = wpa_s->mlme.ssid_len;
 388         os_memcpy(pos, wpa_s->mlme.ssid, wpa_s->mlme.ssid_len);
 389
 390         len = wpa_s->mlme.num_curr_rates;
 391         if (len > 8)
 392                 len = 8;
 393         pos = buf + blen;
 394         blen += len + 2;
 395         *pos++ = WLAN_EID_SUPP_RATES;
 396         *pos++ = len;
 397         for (i = 0; i < len; i++)
 398                 *pos++ = (u8) (wpa_s->mlme.curr_rates[i] / 5);
 399
 400         if (wpa_s->mlme.num_curr_rates > len) {
 401                 pos = buf + blen;
 402                 blen += wpa_s->mlme.num_curr_rates - len + 2;
 403                 *pos++ = WLAN_EID_EXT_SUPP_RATES;
 404                 *pos++ = wpa_s->mlme.num_curr_rates - len;
 405                 for (i = len; i < wpa_s->mlme.num_curr_rates; i++)
 406                         *pos++ = (u8) (wpa_s->mlme.curr_rates[i] / 5);
 407         }
 408
 409         if (wpa_s->mlme.extra_ie && wpa_s->mlme.auth_alg != WLAN_AUTH_FT) {
 410                 pos = buf + blen;
 411                 blen += wpa_s->mlme.extra_ie_len;
 412                 os_memcpy(pos, wpa_s->mlme.extra_ie, wpa_s->mlme.extra_ie_len);
 413         }
 414
 415 #ifdef CONFIG_IEEE80211R
 416         if ((wpa_s->mlme.key_mgmt == KEY_MGMT_FT_802_1X ||
 417              wpa_s->mlme.key_mgmt == KEY_MGMT_FT_PSK) &&
 418             wpa_s->mlme.auth_alg != WLAN_AUTH_FT &&
 419             bss && bss->mdie &&
 420             bss->mdie_len >= 2 + sizeof(struct rsn_mdie) &&
 421             bss->mdie[1] >= sizeof(struct rsn_mdie)) {
 422                 pos = buf + blen;
 423                 blen += 2 + sizeof(struct rsn_mdie);
 424                 *pos++ = WLAN_EID_MOBILITY_DOMAIN;
 425                 *pos++ = sizeof(struct rsn_mdie);
 426                 os_memcpy(pos, bss->mdie + 2, MOBILITY_DOMAIN_ID_LEN);
 427                 pos += MOBILITY_DOMAIN_ID_LEN;
 428                 *pos++ = 0; /* FIX: copy from the target AP's MDIE */
 429         }
 430
 431         if ((wpa_s->mlme.key_mgmt == KEY_MGMT_FT_802_1X ||
 432              wpa_s->mlme.key_mgmt == KEY_MGMT_FT_PSK) &&
 433             wpa_s->mlme.auth_alg == WLAN_AUTH_FT && wpa_s->mlme.ft_ies) {
 434                 pos = buf + blen;
 435                 os_memcpy(pos, wpa_s->mlme.ft_ies, wpa_s->mlme.ft_ies_len);
 436                 pos += wpa_s->mlme.ft_ies_len;
 437                 blen += wpa_s->mlme.ft_ies_len;
 438         }
 439 #endif /* CONFIG_IEEE80211R */
 440
 441         if (wmm && wpa_s->mlme.wmm_enabled) {
 442                 pos = buf + blen;
 443                 blen += 9;
 444                 *pos++ = WLAN_EID_VENDOR_SPECIFIC;
 445                 *pos++ = 7; /* len */
 446                 *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */
 447                 *pos++ = 0x50;
 448                 *pos++ = 0xf2;
 449                 *pos++ = 2; /* WMM */
 450                 *pos++ = 0; /* WMM info */
 451                 *pos++ = 1; /* WMM ver */
 452                 *pos++ = 0;
 453         }
 454
 455         os_free(wpa_s->mlme.assocreq_ies);
 456         wpa_s->mlme.assocreq_ies_len = (buf + blen) - ies;
 457         wpa_s->mlme.assocreq_ies = os_malloc(wpa_s->mlme.assocreq_ies_len);
 458         if (wpa_s->mlme.assocreq_ies) {
 459                 os_memcpy(wpa_s->mlme.assocreq_ies, ies,
 460                           wpa_s->mlme.assocreq_ies_len);
 461         }
 462
 463         ieee80211_sta_tx(wpa_s, buf, blen);
 464         os_free(buf);
 465 }
 466
 467
 468 static void ieee80211_send_deauth(struct wpa_supplicant *wpa_s, u16 reason)
 469 {
 470         u8 *buf;
 471         size_t len;
 472         struct ieee80211_mgmt *mgmt;
 473
 474         buf = os_zalloc(sizeof(*mgmt));
 475         if (buf == NULL) {
 476                 wpa_printf(MSG_DEBUG, "MLME: failed to allocate buffer for "
 477                            "deauth frame");
 478                 return;
 479         }
 480
 481         mgmt = (struct ieee80211_mgmt *) buf;
 482         len = 24;
 483         os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
 484         os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
 485         os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
 486         mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 487                                            WLAN_FC_STYPE_DEAUTH);
 488         len += 2;
 489         mgmt->u.deauth.reason_code = host_to_le16(reason);
 490
 491         ieee80211_sta_tx(wpa_s, buf, len);
 492         os_free(buf);
 493 }
 494
 495
 496 static void ieee80211_send_disassoc(struct wpa_supplicant *wpa_s, u16 reason)
 497 {
 498         u8 *buf;
 499         size_t len;
 500         struct ieee80211_mgmt *mgmt;
 501
 502         buf = os_zalloc(sizeof(*mgmt));
 503         if (buf == NULL) {
 504                 wpa_printf(MSG_DEBUG, "MLME: failed to allocate buffer for "
 505                            "disassoc frame");
 506                 return;
 507         }
 508
 509         mgmt = (struct ieee80211_mgmt *) buf;
 510         len = 24;
 511         os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
 512         os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
 513         os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
 514         mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 515                                            WLAN_FC_STYPE_DISASSOC);
 516         len += 2;
 517         mgmt->u.disassoc.reason_code = host_to_le16(reason);
 518
 519         ieee80211_sta_tx(wpa_s, buf, len);
 520         os_free(buf);
 521 }
 522
 523
 524 static int ieee80211_privacy_mismatch(struct wpa_supplicant *wpa_s)
 525 {
 526         struct ieee80211_sta_bss *bss;
 527         int res = 0;
 528
 529         if (wpa_s->mlme.mixed_cell ||
 530             wpa_s->mlme.key_mgmt != KEY_MGMT_NONE)
 531                 return 0;
 532
 533         bss = ieee80211_bss_get(wpa_s, wpa_s->bssid);
 534         if (bss == NULL)
 535                 return 0;
 536
 537         if (ieee80211_sta_wep_configured(wpa_s) !=
 538             !!(bss->capability & WLAN_CAPABILITY_PRIVACY))
 539                 res = 1;
 540
 541         return res;
 542 }
 543
 544
 545 static void ieee80211_associate(struct wpa_supplicant *wpa_s)
 546 {
 547         wpa_s->mlme.assoc_tries++;
 548         if (wpa_s->mlme.assoc_tries > IEEE80211_ASSOC_MAX_TRIES) {
 549                 wpa_printf(MSG_DEBUG, "MLME: association with AP " MACSTR
 550                            " timed out", MAC2STR(wpa_s->bssid));
 551                 return;
 552         }
 553
 554         wpa_s->mlme.state = IEEE80211_ASSOCIATE;
 555         wpa_printf(MSG_DEBUG, "MLME: associate with AP " MACSTR,
 556                    MAC2STR(wpa_s->bssid));
 557         if (ieee80211_privacy_mismatch(wpa_s)) {
 558                 wpa_printf(MSG_DEBUG, "MLME: mismatch in privacy "
 559                            "configuration and mixed-cell disabled - abort "
 560                            "association");
 561                 return;
 562         }
 563
 564         ieee80211_send_assoc(wpa_s);
 565
 566         ieee80211_reschedule_timer(wpa_s, IEEE80211_ASSOC_TIMEOUT);
 567 }
 568
 569
 570 static void ieee80211_associated(struct wpa_supplicant *wpa_s)
 571 {
 572         int disassoc;
 573
 574         /* TODO: start monitoring current AP signal quality and number of
 575          * missed beacons. Scan other channels every now and then and search
 576          * for better APs. */
 577         /* TODO: remove expired BSSes */
 578
 579         wpa_s->mlme.state = IEEE80211_ASSOCIATED;
 580
 581 #if 0 /* FIX */
 582         sta = sta_info_get(local, wpa_s->bssid);
 583         if (sta == NULL) {
 584                 wpa_printf(MSG_DEBUG "MLME: No STA entry for own AP " MACSTR,
 585                            MAC2STR(wpa_s->bssid));
 586                 disassoc = 1;
 587         } else {
 588                 disassoc = 0;
 589                 if (time_after(jiffies,
 590                                sta->last_rx + IEEE80211_MONITORING_INTERVAL)) {
 591                         if (wpa_s->mlme.probereq_poll) {
 592                                 wpa_printf(MSG_DEBUG "MLME: No ProbeResp from "
 593                                            "current AP " MACSTR " - assume "
 594                                            "out of range",
 595                                            MAC2STR(wpa_s->bssid));
 596                                 disassoc = 1;
 597                         } else {
 598                                 ieee80211_send_probe_req(
 599                                         wpa_s->bssid,
 600                                         wpa_s->mlme.scan_ssid,
 601                                         wpa_s->mlme.scan_ssid_len);
 602                                 wpa_s->mlme.probereq_poll = 1;
 603                         }
 604                 } else {
 605                         wpa_s->mlme.probereq_poll = 0;
 606                         if (time_after(jiffies, wpa_s->mlme.last_probe +
 607                                        IEEE80211_PROBE_INTERVAL)) {
 608                                 wpa_s->mlme.last_probe = jiffies;
 609                                 ieee80211_send_probe_req(wpa_s->bssid,
 610                                                          wpa_s->mlme.ssid,
 611                                                          wpa_s->mlme.ssid_len);
 612                         }
 613                 }
 614                 sta_info_release(local, sta);
 615         }
 616 #else
 617         disassoc = 0;
 618 #endif
 619         if (disassoc) {
 620                 wpa_supplicant_event(wpa_s, EVENT_DISASSOC, NULL);
 621                 ieee80211_reschedule_timer(wpa_s,
 622                                            IEEE80211_MONITORING_INTERVAL +
 623                                            30000);
 624         } else {
 625                 ieee80211_reschedule_timer(wpa_s,
 626                                            IEEE80211_MONITORING_INTERVAL);
 627         }
 628 }
 629
 630
 631 static void ieee80211_send_probe_req(struct wpa_supplicant *wpa_s,
 632                                      const u8 *dst,
 633                                      const u8 *ssid, size_t ssid_len)
 634 {
 635         u8 *buf;
 636         size_t len;
 637         struct ieee80211_mgmt *mgmt;
 638         u8 *pos, *supp_rates;
 639         u8 *esupp_rates = NULL;
 640         int i;
 641
 642         buf = os_malloc(sizeof(*mgmt) + 200 + wpa_s->mlme.extra_probe_ie_len);
 643         if (buf == NULL) {
 644                 wpa_printf(MSG_DEBUG, "MLME: failed to allocate buffer for "
 645                            "probe request");
 646                 return;
 647         }
 648
 649         mgmt = (struct ieee80211_mgmt *) buf;
 650         len = 24;
 651         os_memset(mgmt, 0, 24);
 652         mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 653                                            WLAN_FC_STYPE_PROBE_REQ);
 654         os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
 655         if (dst) {
 656                 os_memcpy(mgmt->da, dst, ETH_ALEN);
 657                 os_memcpy(mgmt->bssid, dst, ETH_ALEN);
 658         } else {
 659                 os_memset(mgmt->da, 0xff, ETH_ALEN);
 660                 os_memset(mgmt->bssid, 0xff, ETH_ALEN);
 661         }
 662         pos = buf + len;
 663         len += 2 + ssid_len;
 664         *pos++ = WLAN_EID_SSID;
 665         *pos++ = ssid_len;
 666         os_memcpy(pos, ssid, ssid_len);
 667
 668         supp_rates = buf + len;
 669         len += 2;
 670         supp_rates[0] = WLAN_EID_SUPP_RATES;
 671         supp_rates[1] = 0;
 672         for (i = 0; i < wpa_s->mlme.num_curr_rates; i++) {
 673                 if (esupp_rates) {
 674                         pos = buf + len;
 675                         len++;
 676                         esupp_rates[1]++;
 677                 } else if (supp_rates[1] == 8) {
 678                         esupp_rates = pos;
 679                         esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES;
 680                         esupp_rates[1] = 1;
 681                         pos = &esupp_rates[2];
 682                         len += 3;
 683                 } else {
 684                         pos = buf + len;
 685                         len++;
 686                         supp_rates[1]++;
 687                 }
 688                 *pos++ = wpa_s->mlme.curr_rates[i] / 5;
 689         }
 690
 691         if (wpa_s->mlme.extra_probe_ie) {
 692                 os_memcpy(pos, wpa_s->mlme.extra_probe_ie,
 693                           wpa_s->mlme.extra_probe_ie_len);
 694                 len += wpa_s->mlme.extra_probe_ie_len;
 695         }
 696
 697         ieee80211_sta_tx(wpa_s, buf, len);
 698         os_free(buf);
 699 }
 700
 701
 702 static int ieee80211_sta_wep_configured(struct wpa_supplicant *wpa_s)
 703 {
 704 #if 0 /* FIX */
 705         if (sdata == NULL || sdata->default_key == NULL ||
 706             sdata->default_key->alg != ALG_WEP)
 707                 return 0;
 708         return 1;
 709 #else
 710         return 0;
 711 #endif
 712 }
 713
 714
 715 static void ieee80211_auth_completed(struct wpa_supplicant *wpa_s)
 716 {
 717         wpa_printf(MSG_DEBUG, "MLME: authenticated");
 718         wpa_s->mlme.authenticated = 1;
 719         ieee80211_associate(wpa_s);
 720 }
 721
 722
 723 static void ieee80211_auth_challenge(struct wpa_supplicant *wpa_s,
 724                                      struct ieee80211_mgmt *mgmt,
 725                                      size_t len,
 726                                      struct ieee80211_rx_status *rx_status)
 727 {
 728         u8 *pos;
 729         struct ieee802_11_elems elems;
 730
 731         wpa_printf(MSG_DEBUG, "MLME: replying to auth challenge");
 732         pos = mgmt->u.auth.variable;
 733         if (ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems, 0)
 734             == ParseFailed) {
 735                 wpa_printf(MSG_DEBUG, "MLME: failed to parse Auth(challenge)");
 736                 return;
 737         }
 738         if (elems.challenge == NULL) {
 739                 wpa_printf(MSG_DEBUG, "MLME: no challenge IE in shared key "
 740                            "auth frame");
 741                 return;
 742         }
 743         ieee80211_send_auth(wpa_s, 3, elems.challenge - 2,
 744                             elems.challenge_len + 2, 1);
 745 }
 746
 747
 748 static void ieee80211_rx_mgmt_auth(struct wpa_supplicant *wpa_s,
 749                                    struct ieee80211_mgmt *mgmt,
 750                                    size_t len,
 751                                    struct ieee80211_rx_status *rx_status)
 752 {
 753         struct wpa_ssid *ssid = wpa_s->current_ssid;
 754         u16 auth_alg, auth_transaction, status_code;
 755         int adhoc;
 756
 757         adhoc = ssid && ssid->mode == WPAS_MODE_IBSS;
 758
 759         if (wpa_s->mlme.state != IEEE80211_AUTHENTICATE && !adhoc) {
 760                 wpa_printf(MSG_DEBUG, "MLME: authentication frame received "
 761                            "from " MACSTR ", but not in authenticate state - "
 762                            "ignored", MAC2STR(mgmt->sa));
 763                 return;
 764         }
 765
 766         if (len < 24 + 6) {
 767                 wpa_printf(MSG_DEBUG, "MLME: too short (%lu) authentication "
 768                            "frame received from " MACSTR " - ignored",
 769                            (unsigned long) len, MAC2STR(mgmt->sa));
 770                 return;
 771         }
 772
 773         if (!adhoc && os_memcmp(wpa_s->bssid, mgmt->sa, ETH_ALEN) != 0) {
 774                 wpa_printf(MSG_DEBUG, "MLME: authentication frame received "
 775                            "from unknown AP (SA=" MACSTR " BSSID=" MACSTR
 776                            ") - ignored",
 777                            MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid));
 778                 return;
 779         }
 780
 781         if (adhoc && os_memcmp(wpa_s->bssid, mgmt->bssid, ETH_ALEN) != 0) {
 782                 wpa_printf(MSG_DEBUG, "MLME: authentication frame received "
 783                            "from unknown BSSID (SA=" MACSTR " BSSID=" MACSTR
 784                            ") - ignored",
 785                            MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid));
 786                 return;
 787         }
 788
 789         auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
 790         auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
 791         status_code = le_to_host16(mgmt->u.auth.status_code);
 792
 793         wpa_printf(MSG_DEBUG, "MLME: RX authentication from " MACSTR
 794                    " (alg=%d transaction=%d status=%d)",
 795                    MAC2STR(mgmt->sa), auth_alg, auth_transaction, status_code);
 796
 797         if (adhoc) {
 798                 /* IEEE 802.11 standard does not require authentication in IBSS
 799                  * networks and most implementations do not seem to use it.
 800                  * However, try to reply to authentication attempts if someone
 801                  * has actually implemented this.
 802                  * TODO: Could implement shared key authentication. */
 803                 if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1) {
 804                         wpa_printf(MSG_DEBUG, "MLME: unexpected IBSS "
 805                                    "authentication frame (alg=%d "
 806                                    "transaction=%d)",
 807                                    auth_alg, auth_transaction);
 808                         return;
 809                 }
 810                 ieee80211_send_auth(wpa_s, 2, NULL, 0, 0);
 811         }
 812
 813         if (auth_alg != wpa_s->mlme.auth_alg ||
 814             auth_transaction != wpa_s->mlme.auth_transaction) {
 815                 wpa_printf(MSG_DEBUG, "MLME: unexpected authentication frame "
 816                            "(alg=%d transaction=%d)",
 817                            auth_alg, auth_transaction);
 818                 return;
 819         }
 820
 821         if (status_code != WLAN_STATUS_SUCCESS) {
 822                 wpa_printf(MSG_DEBUG, "MLME: AP denied authentication "
 823                            "(auth_alg=%d code=%d)", wpa_s->mlme.auth_alg,
 824                            status_code);
 825                 if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
 826                         const int num_algs = 3;
 827                         u8 algs[num_algs];
 828                         int i, pos;
 829                         algs[0] = algs[1] = algs[2] = 0xff;
 830                         if (wpa_s->mlme.auth_algs & WPA_AUTH_ALG_OPEN)
 831                                 algs[0] = WLAN_AUTH_OPEN;
 832                         if (wpa_s->mlme.auth_algs & WPA_AUTH_ALG_SHARED)
 833                                 algs[1] = WLAN_AUTH_SHARED_KEY;
 834                         if (wpa_s->mlme.auth_algs & WPA_AUTH_ALG_LEAP)
 835                                 algs[2] = WLAN_AUTH_LEAP;
 836                         if (wpa_s->mlme.auth_alg == WLAN_AUTH_OPEN)
 837                                 pos = 0;
 838                         else if (wpa_s->mlme.auth_alg == WLAN_AUTH_SHARED_KEY)
 839                                 pos = 1;
 840                         else
 841                                 pos = 2;
 842                         for (i = 0; i < num_algs; i++) {
 843                                 pos++;
 844                                 if (pos >= num_algs)
 845                                         pos = 0;
 846                                 if (algs[pos] == wpa_s->mlme.auth_alg ||
 847                                     algs[pos] == 0xff)
 848                                         continue;
 849                                 if (algs[pos] == WLAN_AUTH_SHARED_KEY &&
 850                                     !ieee80211_sta_wep_configured(wpa_s))
 851                                         continue;
 852                                 wpa_s->mlme.auth_alg = algs[pos];
 853                                 wpa_printf(MSG_DEBUG, "MLME: set auth_alg=%d "
 854                                            "for next try",
 855                                            wpa_s->mlme.auth_alg);
 856                                 break;
 857                         }
 858                 }
 859                 return;
 860         }
 861
 862         switch (wpa_s->mlme.auth_alg) {
 863         case WLAN_AUTH_OPEN:
 864         case WLAN_AUTH_LEAP:
 865                 ieee80211_auth_completed(wpa_s);
 866                 break;
 867         case WLAN_AUTH_SHARED_KEY:
 868                 if (wpa_s->mlme.auth_transaction == 4)
 869                         ieee80211_auth_completed(wpa_s);
 870                 else
 871                         ieee80211_auth_challenge(wpa_s, mgmt, len,
 872                                                  rx_status);
 873                 break;
 874 #ifdef CONFIG_IEEE80211R
 875         case WLAN_AUTH_FT:
 876         {
 877                 union wpa_event_data data;
 878                 struct wpabuf *ric = NULL;
 879                 os_memset(&data, 0, sizeof(data));
 880                 data.ft_ies.ies = mgmt->u.auth.variable;
 881                 data.ft_ies.ies_len = len -
 882                         (mgmt->u.auth.variable - (u8 *) mgmt);
 883                 os_memcpy(data.ft_ies.target_ap, wpa_s->bssid, ETH_ALEN);
 884                 if (os_strcmp(wpa_s->driver->name, "test") == 0 &&
 885                     wpa_s->mlme.wmm_enabled) {
 886                         ric = wpabuf_alloc(200);
 887                         if (ric) {
 888                                 /* Build simple RIC-Request: RDIE | TSPEC */
 889
 890                                 /* RIC Data (RDIE) */
 891                                 wpabuf_put_u8(ric, WLAN_EID_RIC_DATA);
 892                                 wpabuf_put_u8(ric, 4);
 893                                 wpabuf_put_u8(ric, 0); /* RDIE Identifier */
 894                                 wpabuf_put_u8(ric, 1); /* Resource Descriptor
 895                                                         * Count */
 896                                 wpabuf_put_le16(ric, 0); /* Status Code */
 897
 898                                 /* WMM TSPEC */
 899                                 ieee80211_build_tspec(ric);
 900
 901                                 data.ft_ies.ric_ies = wpabuf_head(ric);
 902                                 data.ft_ies.ric_ies_len = wpabuf_len(ric);
 903                         }
 904                 }
 905
 906                 wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &data);
 907                 wpabuf_free(ric);
 908                 ieee80211_auth_completed(wpa_s);
 909                 break;
 910         }
 911 #endif /* CONFIG_IEEE80211R */
 912         }
 913 }
 914
 915
 916 static void ieee80211_rx_mgmt_deauth(struct wpa_supplicant *wpa_s,
 917                                      struct ieee80211_mgmt *mgmt,
 918                                      size_t len,
 919                                      struct ieee80211_rx_status *rx_status)
 920 {
 921         u16 reason_code;
 922
 923         if (len < 24 + 2) {
 924                 wpa_printf(MSG_DEBUG, "MLME: too short (%lu) deauthentication "
 925                            "frame received from " MACSTR " - ignored",
 926                            (unsigned long) len, MAC2STR(mgmt->sa));
 927                 return;
 928         }
 929
 930         if (os_memcmp(wpa_s->bssid, mgmt->sa, ETH_ALEN) != 0) {
 931                 wpa_printf(MSG_DEBUG, "MLME: deauthentication frame received "
 932                            "from unknown AP (SA=" MACSTR " BSSID=" MACSTR
 933                            ") - ignored",
 934                            MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid));
 935                 return;
 936         }
 937
 938         reason_code = le_to_host16(mgmt->u.deauth.reason_code);
 939
 940         wpa_printf(MSG_DEBUG, "MLME: RX deauthentication from " MACSTR
 941                    " (reason=%d)", MAC2STR(mgmt->sa), reason_code);
 942
 943         if (wpa_s->mlme.authenticated)
 944                 wpa_printf(MSG_DEBUG, "MLME: deauthenticated");
 945
 946         if (wpa_s->mlme.state == IEEE80211_AUTHENTICATE ||
 947             wpa_s->mlme.state == IEEE80211_ASSOCIATE ||
 948             wpa_s->mlme.state == IEEE80211_ASSOCIATED) {
 949                 wpa_s->mlme.state = IEEE80211_AUTHENTICATE;
 950                 ieee80211_reschedule_timer(wpa_s,
 951                                            IEEE80211_RETRY_AUTH_INTERVAL);
 952         }
 953
 954         ieee80211_set_associated(wpa_s, 0);
 955         wpa_s->mlme.authenticated = 0;
 956 }
 957
 958
 959 static void ieee80211_rx_mgmt_disassoc(struct wpa_supplicant *wpa_s,
 960                                        struct ieee80211_mgmt *mgmt,
 961                                        size_t len,
 962                                        struct ieee80211_rx_status *rx_status)
 963 {
 964         u16 reason_code;
 965
 966         if (len < 24 + 2) {
 967                 wpa_printf(MSG_DEBUG, "MLME: too short (%lu) disassociation "
 968                            "frame received from " MACSTR " - ignored",
 969                            (unsigned long) len, MAC2STR(mgmt->sa));
 970                 return;
 971         }
 972
 973         if (os_memcmp(wpa_s->bssid, mgmt->sa, ETH_ALEN) != 0) {
 974                 wpa_printf(MSG_DEBUG, "MLME: disassociation frame received "
 975                            "from unknown AP (SA=" MACSTR " BSSID=" MACSTR
 976                            ") - ignored",
 977                            MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid));
 978                 return;
 979         }
 980
 981         reason_code = le_to_host16(mgmt->u.disassoc.reason_code);
 982
 983         wpa_printf(MSG_DEBUG, "MLME: RX disassociation from " MACSTR
 984                    " (reason=%d)", MAC2STR(mgmt->sa), reason_code);
 985
 986         if (wpa_s->mlme.associated)
 987                 wpa_printf(MSG_DEBUG, "MLME: disassociated");
 988
 989         if (wpa_s->mlme.state == IEEE80211_ASSOCIATED) {
 990                 wpa_s->mlme.state = IEEE80211_ASSOCIATE;
 991                 ieee80211_reschedule_timer(wpa_s,
 992                                            IEEE80211_RETRY_AUTH_INTERVAL);
 993         }
 994
 995         ieee80211_set_associated(wpa_s, 0);
 996 }
 997
 998
 999 static void ieee80211_build_tspec(struct wpabuf *buf)
1000 {
1001         struct wmm_tspec_element *tspec;
1002         int tid, up;
1003
1004         tspec = wpabuf_put(buf, sizeof(*tspec));
1005         tspec->eid = WLAN_EID_VENDOR_SPECIFIC;
1006         tspec->length = sizeof(*tspec) - 2;
1007         tspec->oui[0] = 0x00;
1008         tspec->oui[1] = 0x50;
1009         tspec->oui[2] = 0xf2;
1010         tspec->oui_type = 2;
1011         tspec->oui_subtype = 2;
1012         tspec->version = 1;
1013
1014         tid = 1;
1015         up = 6; /* Voice */
1016         tspec->ts_info[0] = (tid << 1) |
1017                 (WMM_TSPEC_DIRECTION_BI_DIRECTIONAL << 5) |
1018                 BIT(7);
1019         tspec->ts_info[1] = up << 3;
1020         tspec->nominal_msdu_size = host_to_le16(1530);
1021         tspec->mean_data_rate = host_to_le32(128000); /* bits per second */
1022         tspec->minimum_phy_rate = host_to_le32(6000000);
1023         tspec->surplus_bandwidth_allowance = host_to_le16(0x3000); /* 150% */
1024 }
1025
1026
1027 static void ieee80211_tx_addts(struct wpa_supplicant *wpa_s)
1028 {
1029         struct wpabuf *buf;
1030         struct ieee80211_mgmt *mgmt;
1031         size_t alen;
1032
1033         wpa_printf(MSG_DEBUG, "MLME: Send ADDTS Request for Voice TSPEC");
1034         mgmt = NULL;
1035         alen = mgmt->u.action.u.wmm_action.variable - (u8 *) mgmt;
1036
1037         buf = wpabuf_alloc(alen + sizeof(struct wmm_tspec_element));
1038         if (buf == NULL)
1039                 return;
1040
1041         mgmt = wpabuf_put(buf, alen);
1042         os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
1043         os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
1044         os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
1045         mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1046                                            WLAN_FC_STYPE_ACTION);
1047         mgmt->u.action.category = WLAN_ACTION_WMM;
1048         mgmt->u.action.u.wmm_action.action_code = WMM_ACTION_CODE_ADDTS_REQ;
1049         mgmt->u.action.u.wmm_action.dialog_token = 1;
1050         mgmt->u.action.u.wmm_action.status_code = 0;
1051
1052         ieee80211_build_tspec(buf);
1053
1054         ieee80211_sta_tx(wpa_s, wpabuf_head(buf), wpabuf_len(buf));
1055         wpabuf_free(buf);
1056 }
1057
1058
1059 static void ieee80211_rx_mgmt_assoc_resp(struct wpa_supplicant *wpa_s,
1060                                          struct ieee80211_mgmt *mgmt,
1061                                          size_t len,
1062                                          struct ieee80211_rx_status *rx_status,
1063                                          int reassoc)
1064 {
1065         u8 rates[32];
1066         size_t rates_len;
1067         u16 capab_info, status_code, aid;
1068         struct ieee802_11_elems elems;
1069         u8 *pos;
1070
1071         /* AssocResp and ReassocResp have identical structure, so process both
1072          * of them in this function. */
1073
1074         if (wpa_s->mlme.state != IEEE80211_ASSOCIATE) {
1075                 wpa_printf(MSG_DEBUG, "MLME: association frame received from "
1076                            MACSTR ", but not in associate state - ignored",
1077                            MAC2STR(mgmt->sa));
1078                 return;
1079         }
1080
1081         if (len < 24 + 6) {
1082                 wpa_printf(MSG_DEBUG, "MLME: too short (%lu) association "
1083                            "frame received from " MACSTR " - ignored",
1084                            (unsigned long) len, MAC2STR(mgmt->sa));
1085                 return;
1086         }
1087
1088         if (os_memcmp(wpa_s->bssid, mgmt->sa, ETH_ALEN) != 0) {
1089                 wpa_printf(MSG_DEBUG, "MLME: association frame received from "
1090                            "unknown AP (SA=" MACSTR " BSSID=" MACSTR ") - "
1091                            "ignored", MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid));
1092                 return;
1093         }
1094
1095         capab_info = le_to_host16(mgmt->u.assoc_resp.capab_info);
1096         status_code = le_to_host16(mgmt->u.assoc_resp.status_code);
1097         aid = le_to_host16(mgmt->u.assoc_resp.aid);
1098         if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
1099                 wpa_printf(MSG_DEBUG, "MLME: invalid aid value %d; bits 15:14 "
1100                            "not set", aid);
1101         aid &= ~(BIT(15) | BIT(14));
1102
1103         wpa_printf(MSG_DEBUG, "MLME: RX %sssocResp from " MACSTR
1104                    " (capab=0x%x status=%d aid=%d)",
1105                    reassoc ? "Rea" : "A", MAC2STR(mgmt->sa),
1106                    capab_info, status_code, aid);
1107
1108         pos = mgmt->u.assoc_resp.variable;
1109         if (ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems, 0)
1110             == ParseFailed) {
1111                 wpa_printf(MSG_DEBUG, "MLME: failed to parse AssocResp");
1112                 return;
1113         }
1114
1115         if (status_code != WLAN_STATUS_SUCCESS) {
1116                 wpa_printf(MSG_DEBUG, "MLME: AP denied association (code=%d)",
1117                            status_code);
1118 #ifdef CONFIG_IEEE80211W
1119                 if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY &&
1120                     elems.timeout_int && elems.timeout_int_len == 5 &&
1121                     elems.timeout_int[0] == WLAN_TIMEOUT_ASSOC_COMEBACK) {
1122                         u32 tu, ms;
1123                         tu = WPA_GET_LE32(elems.timeout_int + 1);
1124                         ms = tu * 1024 / 1000;
1125                         wpa_printf(MSG_DEBUG, "MLME: AP rejected association "
1126                                    "temporarily; comeback duration %u TU "
1127                                    "(%u ms)", tu, ms);
1128                         if (ms > IEEE80211_ASSOC_TIMEOUT) {
1129                                 wpa_printf(MSG_DEBUG, "MLME: Update timer "
1130                                            "based on comeback duration");
1131                                 ieee80211_reschedule_timer(wpa_s, ms);
1132                         }
1133                 }
1134 #endif /* CONFIG_IEEE80211W */
1135                 return;
1136         }
1137
1138         if (elems.supp_rates == NULL) {
1139                 wpa_printf(MSG_DEBUG, "MLME: no SuppRates element in "
1140                            "AssocResp");
1141                 return;
1142         }
1143
1144         if (wpa_s->mlme.auth_alg == WLAN_AUTH_FT) {
1145                 if (!reassoc) {
1146                         wpa_printf(MSG_DEBUG, "MLME: AP tried to use "
1147                                    "association, not reassociation, response "
1148                                    "with FT");
1149                         return;
1150                 }
1151                 if (wpa_ft_validate_reassoc_resp(
1152                             wpa_s->wpa, pos, len - (pos - (u8 *) mgmt),
1153                             mgmt->sa) < 0) {
1154                         wpa_printf(MSG_DEBUG, "MLME: FT validation of Reassoc"
1155                                    "Resp failed");
1156                         return;
1157                 }
1158         } else if (wpa_sm_set_ft_params(wpa_s->wpa, pos,
1159                                         len - (pos - (u8 *) mgmt)) < 0)
1160                 return;
1161
1162         wpa_printf(MSG_DEBUG, "MLME: associated");
1163         wpa_s->mlme.aid = aid;
1164         wpa_s->mlme.ap_capab = capab_info;
1165
1166         os_free(wpa_s->mlme.assocresp_ies);
1167         wpa_s->mlme.assocresp_ies_len = len - (pos - (u8 *) mgmt);
1168         wpa_s->mlme.assocresp_ies = os_malloc(wpa_s->mlme.assocresp_ies_len);
1169         if (wpa_s->mlme.assocresp_ies) {
1170                 os_memcpy(wpa_s->mlme.assocresp_ies, pos,
1171                           wpa_s->mlme.assocresp_ies_len);
1172         }
1173
1174         ieee80211_set_associated(wpa_s, 1);
1175
1176         rates_len = elems.supp_rates_len;
1177         if (rates_len > sizeof(rates))
1178                 rates_len = sizeof(rates);
1179         os_memcpy(rates, elems.supp_rates, rates_len);
1180         if (elems.ext_supp_rates) {
1181                 size_t _len = elems.ext_supp_rates_len;
1182                 if (_len > sizeof(rates) - rates_len)
1183                         _len = sizeof(rates) - rates_len;
1184                 os_memcpy(rates + rates_len, elems.ext_supp_rates, _len);
1185                 rates_len += _len;
1186         }
1187
1188         if (wpa_drv_set_bssid(wpa_s, wpa_s->bssid) < 0) {
1189                 wpa_printf(MSG_DEBUG, "MLME: failed to set BSSID for the "
1190                            "netstack");
1191         }
1192         if (wpa_drv_set_ssid(wpa_s, wpa_s->mlme.ssid, wpa_s->mlme.ssid_len) <
1193             0) {
1194                 wpa_printf(MSG_DEBUG, "MLME: failed to set SSID for the "
1195                            "netstack");
1196         }
1197
1198         /* Remove STA entry before adding a new one just in case to avoid
1199          * problems with existing configuration (e.g., keys). */
1200         wpa_drv_mlme_remove_sta(wpa_s, wpa_s->bssid);
1201         if (wpa_drv_mlme_add_sta(wpa_s, wpa_s->bssid, rates, rates_len) < 0) {
1202                 wpa_printf(MSG_DEBUG, "MLME: failed to add STA entry to the "
1203                            "netstack");
1204         }
1205
1206         if (elems.wmm && wpa_s->mlme.wmm_enabled)
1207                 ieee80211_sta_wmm_params(wpa_s, elems.wmm, elems.wmm_len);
1208
1209         ieee80211_associated(wpa_s);
1210
1211         if (wpa_s->mlme.auth_alg != WLAN_AUTH_FT &&
1212             os_strcmp(wpa_s->driver->name, "test") == 0 &&
1213             elems.wmm && wpa_s->mlme.wmm_enabled) {
1214                 /* Test WMM-AC - send ADDTS for WMM TSPEC */
1215                 ieee80211_tx_addts(wpa_s);
1216         }
1217 }
1218
1219
1220 /* Caller must hold local->sta_bss_lock */
1221 static void __ieee80211_bss_hash_add(struct wpa_supplicant *wpa_s,
1222                                      struct ieee80211_sta_bss *bss)
1223 {
1224         bss->hnext = wpa_s->mlme.sta_bss_hash[STA_HASH(bss->bssid)];
1225         wpa_s->mlme.sta_bss_hash[STA_HASH(bss->bssid)] = bss;
1226 }
1227
1228
1229 /* Caller must hold local->sta_bss_lock */
1230 static void __ieee80211_bss_hash_del(struct wpa_supplicant *wpa_s,
1231                                      struct ieee80211_sta_bss *bss)
1232 {
1233         struct ieee80211_sta_bss *b, *prev = NULL;
1234         b = wpa_s->mlme.sta_bss_hash[STA_HASH(bss->bssid)];
1235         while (b) {
1236                 if (b == bss) {
1237                         if (prev == NULL) {
1238                                 wpa_s->mlme.sta_bss_hash[STA_HASH(bss->bssid)]
1239                                         = bss->hnext;
1240                         } else {
1241                                 prev->hnext = bss->hnext;
1242                         }
1243                         break;
1244                 }
1245                 prev = b;
1246                 b = b->hnext;
1247         }
1248 }
1249
1250
1251 static struct ieee80211_sta_bss *
1252 ieee80211_bss_add(struct wpa_supplicant *wpa_s, const u8 *bssid)
1253 {
1254         struct ieee80211_sta_bss *bss;
1255
1256         bss = os_zalloc(sizeof(*bss));
1257         if (bss == NULL)
1258                 return NULL;
1259         os_memcpy(bss->bssid, bssid, ETH_ALEN);
1260
1261         /* TODO: order by RSSI? */
1262         bss->next = wpa_s->mlme.sta_bss_list;
1263         wpa_s->mlme.sta_bss_list = bss;
1264         __ieee80211_bss_hash_add(wpa_s, bss);
1265         return bss;
1266 }
1267
1268
1269 static struct ieee80211_sta_bss *
1270 ieee80211_bss_get(struct wpa_supplicant *wpa_s, const u8 *bssid)
1271 {
1272         struct ieee80211_sta_bss *bss;
1273
1274         bss = wpa_s->mlme.sta_bss_hash[STA_HASH(bssid)];
1275         while (bss) {
1276                 if (os_memcmp(bss->bssid, bssid, ETH_ALEN) == 0)
1277                         break;
1278                 bss = bss->hnext;
1279         }
1280         return bss;
1281 }
1282
1283
1284 static void ieee80211_bss_free(struct wpa_supplicant *wpa_s,
1285                                struct ieee80211_sta_bss *bss)
1286 {
1287         __ieee80211_bss_hash_del(wpa_s, bss);
1288         os_free(bss->ie);
1289         os_free(bss->wpa_ie);
1290         os_free(bss->rsn_ie);
1291         os_free(bss->wmm_ie);
1292         os_free(bss->mdie);
1293         os_free(bss);
1294 }
1295
1296
1297 static void ieee80211_bss_list_deinit(struct wpa_supplicant *wpa_s)
1298 {
1299         struct ieee80211_sta_bss *bss, *prev;
1300
1301         bss = wpa_s->mlme.sta_bss_list;
1302         wpa_s->mlme.sta_bss_list = NULL;
1303         while (bss) {
1304                 prev = bss;
1305                 bss = bss->next;
1306                 ieee80211_bss_free(wpa_s, prev);
1307         }
1308 }
1309
1310
1311 static void ieee80211_bss_info(struct wpa_supplicant *wpa_s,
1312                                struct ieee80211_mgmt *mgmt,
1313                                size_t len,
1314                                struct ieee80211_rx_status *rx_status,
1315                                int beacon)
1316 {
1317         struct ieee802_11_elems elems;
1318         size_t baselen;
1319         int channel, invalid = 0, clen;
1320         struct ieee80211_sta_bss *bss;
1321         u64 timestamp;
1322         u8 *pos, *ie_pos;
1323         size_t ie_len;
1324
1325         if (!beacon && os_memcmp(mgmt->da, wpa_s->own_addr, ETH_ALEN))
1326                 return; /* ignore ProbeResp to foreign address */
1327
1328 #if 0
1329         wpa_printf(MSG_MSGDUMP, "MLME: RX %s from " MACSTR " to " MACSTR,
1330                    beacon ? "Beacon" : "Probe Response",
1331                    MAC2STR(mgmt->sa), MAC2STR(mgmt->da));
1332 #endif
1333
1334         baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
1335         if (baselen > len)
1336                 return;
1337
1338         pos = mgmt->u.beacon.timestamp;
1339         timestamp = WPA_GET_LE64(pos);
1340
1341 #if 0 /* FIX */
1342         if (local->conf.mode == IW_MODE_ADHOC && beacon &&
1343             os_memcmp(mgmt->bssid, local->bssid, ETH_ALEN) == 0) {
1344 #ifdef IEEE80211_IBSS_DEBUG
1345                 static unsigned long last_tsf_debug = 0;
1346                 u64 tsf;
1347                 if (local->hw->get_tsf)
1348                         tsf = local->hw->get_tsf(local->mdev);
1349                 else
1350                         tsf = -1LLU;
1351                 if (time_after(jiffies, last_tsf_debug + 5 * HZ)) {
1352                         wpa_printf(MSG_DEBUG, "RX beacon SA=" MACSTR " BSSID="
1353                                    MACSTR " TSF=0x%llx BCN=0x%llx diff=%lld "
1354                                    "@%ld",
1355                                    MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid),
1356                                    tsf, timestamp, tsf - timestamp, jiffies);
1357                         last_tsf_debug = jiffies;
1358                 }
1359 #endif /* IEEE80211_IBSS_DEBUG */
1360         }
1361 #endif
1362
1363         ie_pos = mgmt->u.beacon.variable;
1364         ie_len = len - baselen;
1365         if (ieee802_11_parse_elems(ie_pos, ie_len, &elems, 0) == ParseFailed)
1366                 invalid = 1;
1367
1368 #if 0 /* FIX */
1369         if (local->conf.mode == IW_MODE_ADHOC && elems.supp_rates &&
1370             os_memcmp(mgmt->bssid, local->bssid, ETH_ALEN) == 0 &&
1371             (sta = sta_info_get(local, mgmt->sa))) {
1372                 struct ieee80211_rate *rates;
1373                 size_t num_rates;
1374                 u32 supp_rates, prev_rates;
1375                 int i, j, oper_mode;
1376
1377                 rates = local->curr_rates;
1378                 num_rates = local->num_curr_rates;
1379                 oper_mode = wpa_s->mlme.sta_scanning ?
1380                         local->scan_oper_phymode : local->conf.phymode;
1381                 for (i = 0; i < local->hw->num_modes; i++) {
1382                         struct ieee80211_hw_modes *mode = &local->hw->modes[i];
1383                         if (oper_mode == mode->mode) {
1384                                 rates = mode->rates;
1385                                 num_rates = mode->num_rates;
1386                                 break;
1387                         }
1388                 }
1389
1390                 supp_rates = 0;
1391                 for (i = 0; i < elems.supp_rates_len +
1392                              elems.ext_supp_rates_len; i++) {
1393                         u8 rate = 0;
1394                         int own_rate;
1395                         if (i < elems.supp_rates_len)
1396                                 rate = elems.supp_rates[i];
1397                         else if (elems.ext_supp_rates)
1398                                 rate = elems.ext_supp_rates
1399                                         [i - elems.supp_rates_len];
1400                         own_rate = 5 * (rate & 0x7f);
1401                         if (oper_mode == MODE_ATHEROS_TURBO)
1402                                 own_rate *= 2;
1403                         for (j = 0; j < num_rates; j++)
1404                                 if (rates[j].rate == own_rate)
1405                                         supp_rates |= BIT(j);
1406                 }
1407
1408                 prev_rates = sta->supp_rates;
1409                 sta->supp_rates &= supp_rates;
1410                 if (sta->supp_rates == 0) {
1411                         /* No matching rates - this should not really happen.
1412                          * Make sure that at least one rate is marked
1413                          * supported to avoid issues with TX rate ctrl. */
1414                         sta->supp_rates = wpa_s->mlme.supp_rates_bits;
1415                 }
1416                 if (sta->supp_rates != prev_rates) {
1417                         wpa_printf(MSG_DEBUG, "MLME: updated supp_rates set "
1418                                    "for " MACSTR " based on beacon info "
1419                                    "(0x%x & 0x%x -> 0x%x)",
1420                                    MAC2STR(sta->addr), prev_rates,
1421                                    supp_rates, sta->supp_rates);
1422                 }
1423                 sta_info_release(local, sta);
1424         }
1425 #endif
1426
1427         if (elems.ssid == NULL)
1428                 return;
1429
1430         if (elems.ds_params && elems.ds_params_len == 1)
1431                 channel = elems.ds_params[0];
1432         else
1433                 channel = rx_status->channel;
1434
1435         bss = ieee80211_bss_get(wpa_s, mgmt->bssid);
1436         if (bss == NULL) {
1437                 bss = ieee80211_bss_add(wpa_s, mgmt->bssid);
1438                 if (bss == NULL)
1439                         return;
1440         } else {
1441 #if 0
1442                 /* TODO: order by RSSI? */
1443                 spin_lock_bh(&local->sta_bss_lock);
1444                 list_move_tail(&bss->list, &local->sta_bss_list);
1445                 spin_unlock_bh(&local->sta_bss_lock);
1446 #endif
1447         }
1448
1449         if (bss->probe_resp && beacon) {
1450                 /* Do not allow beacon to override data from Probe Response. */
1451                 return;
1452         }
1453
1454         bss->beacon_int = le_to_host16(mgmt->u.beacon.beacon_int);
1455         bss->capability = le_to_host16(mgmt->u.beacon.capab_info);
1456
1457         if (bss->ie == NULL || bss->ie_len < ie_len) {
1458                 os_free(bss->ie);
1459                 bss->ie = os_malloc(ie_len);
1460         }
1461         if (bss->ie) {
1462                 os_memcpy(bss->ie, ie_pos, ie_len);
1463                 bss->ie_len = ie_len;
1464         }
1465
1466         if (elems.ssid && elems.ssid_len <= MAX_SSID_LEN) {
1467                 os_memcpy(bss->ssid, elems.ssid, elems.ssid_len);
1468                 bss->ssid_len = elems.ssid_len;
1469         }
1470
1471         bss->supp_rates_len = 0;
1472         if (elems.supp_rates) {
1473                 clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
1474                 if (clen > elems.supp_rates_len)
1475                         clen = elems.supp_rates_len;
1476                 os_memcpy(&bss->supp_rates[bss->supp_rates_len],
1477                           elems.supp_rates, clen);
1478                 bss->supp_rates_len += clen;
1479         }
1480         if (elems.ext_supp_rates) {
1481                 clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
1482                 if (clen > elems.ext_supp_rates_len)
1483                         clen = elems.ext_supp_rates_len;
1484                 os_memcpy(&bss->supp_rates[bss->supp_rates_len],
1485                           elems.ext_supp_rates, clen);
1486                 bss->supp_rates_len += clen;
1487         }
1488
1489         if (elems.wpa_ie &&
1490             (bss->wpa_ie == NULL || bss->wpa_ie_len != elems.wpa_ie_len ||
1491              os_memcmp(bss->wpa_ie, elems.wpa_ie, elems.wpa_ie_len))) {
1492                 os_free(bss->wpa_ie);
1493                 bss->wpa_ie = os_malloc(elems.wpa_ie_len + 2);
1494                 if (bss->wpa_ie) {
1495                         os_memcpy(bss->wpa_ie, elems.wpa_ie - 2,
1496                                   elems.wpa_ie_len + 2);
1497                         bss->wpa_ie_len = elems.wpa_ie_len + 2;
1498                 } else
1499                         bss->wpa_ie_len = 0;
1500         } else if (!elems.wpa_ie && bss->wpa_ie) {
1501                 os_free(bss->wpa_ie);
1502                 bss->wpa_ie = NULL;
1503                 bss->wpa_ie_len = 0;
1504         }
1505
1506         if (elems.rsn_ie &&
1507             (bss->rsn_ie == NULL || bss->rsn_ie_len != elems.rsn_ie_len ||
1508              os_memcmp(bss->rsn_ie, elems.rsn_ie, elems.rsn_ie_len))) {
1509                 os_free(bss->rsn_ie);
1510                 bss->rsn_ie = os_malloc(elems.rsn_ie_len + 2);
1511                 if (bss->rsn_ie) {
1512                         os_memcpy(bss->rsn_ie, elems.rsn_ie - 2,
1513                                   elems.rsn_ie_len + 2);
1514                         bss->rsn_ie_len = elems.rsn_ie_len + 2;
1515                 } else
1516                         bss->rsn_ie_len = 0;
1517         } else if (!elems.rsn_ie && bss->rsn_ie) {
1518                 os_free(bss->rsn_ie);
1519                 bss->rsn_ie = NULL;
1520                 bss->rsn_ie_len = 0;
1521         }
1522
1523         if (elems.wmm &&
1524             (bss->wmm_ie == NULL || bss->wmm_ie_len != elems.wmm_len ||
1525              os_memcmp(bss->wmm_ie, elems.wmm, elems.wmm_len))) {
1526                 os_free(bss->wmm_ie);
1527                 bss->wmm_ie = os_malloc(elems.wmm_len + 2);
1528                 if (bss->wmm_ie) {
1529                         os_memcpy(bss->wmm_ie, elems.wmm - 2,
1530                                   elems.wmm_len + 2);
1531                         bss->wmm_ie_len = elems.wmm_len + 2;
1532                 } else
1533                         bss->wmm_ie_len = 0;
1534         } else if (!elems.wmm && bss->wmm_ie) {
1535                 os_free(bss->wmm_ie);
1536                 bss->wmm_ie = NULL;
1537                 bss->wmm_ie_len = 0;
1538         }
1539
1540 #ifdef CONFIG_IEEE80211R
1541         if (elems.mdie &&
1542             (bss->mdie == NULL || bss->mdie_len != elems.mdie_len ||
1543              os_memcmp(bss->mdie, elems.mdie, elems.mdie_len))) {
1544                 os_free(bss->mdie);
1545                 bss->mdie = os_malloc(elems.mdie_len + 2);
1546                 if (bss->mdie) {
1547                         os_memcpy(bss->mdie, elems.mdie - 2,
1548                                   elems.mdie_len + 2);
1549                         bss->mdie_len = elems.mdie_len + 2;
1550                 } else
1551                         bss->mdie_len = 0;
1552         } else if (!elems.mdie && bss->mdie) {
1553                 os_free(bss->mdie);
1554                 bss->mdie = NULL;
1555                 bss->mdie_len = 0;
1556         }
1557 #endif /* CONFIG_IEEE80211R */
1558
1559         bss->hw_mode = wpa_s->mlme.phymode;
1560         bss->channel = channel;
1561         bss->freq = wpa_s->mlme.freq;
1562         if (channel != wpa_s->mlme.channel &&
1563             (wpa_s->mlme.phymode == HOSTAPD_MODE_IEEE80211G ||
1564              wpa_s->mlme.phymode == HOSTAPD_MODE_IEEE80211B) &&
1565             channel >= 1 && channel <= 14) {
1566                 static const int freq_list[] = {
1567                         2412, 2417, 2422, 2427, 2432, 2437, 2442,
1568                         2447, 2452, 2457, 2462, 2467, 2472, 2484
1569                 };
1570                 /* IEEE 802.11g/b mode can receive packets from neighboring
1571                  * channels, so map the channel into frequency. */
1572                 bss->freq = freq_list[channel - 1];
1573         }
1574         bss->timestamp = timestamp;
1575         os_get_time(&bss->last_update);
1576         bss->rssi = rx_status->ssi;
1577         if (!beacon)
1578                 bss->probe_resp++;
1579 }
1580
1581
1582 static void ieee80211_rx_mgmt_probe_resp(struct wpa_supplicant *wpa_s,
1583                                          struct ieee80211_mgmt *mgmt,
1584                                          size_t len,
1585                                          struct ieee80211_rx_status *rx_status)
1586 {
1587         ieee80211_bss_info(wpa_s, mgmt, len, rx_status, 0);
1588 }
1589
1590
1591 static void ieee80211_rx_mgmt_beacon(struct wpa_supplicant *wpa_s,
1592                                      struct ieee80211_mgmt *mgmt,
1593                                      size_t len,
1594                                      struct ieee80211_rx_status *rx_status)
1595 {
1596         int use_protection;
1597         size_t baselen;
1598         struct ieee802_11_elems elems;
1599
1600         ieee80211_bss_info(wpa_s, mgmt, len, rx_status, 1);
1601
1602         if (!wpa_s->mlme.associated ||
1603             os_memcmp(wpa_s->bssid, mgmt->bssid, ETH_ALEN) != 0)
1604                 return;
1605
1606         /* Process beacon from the current BSS */
1607         baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
1608         if (baselen > len)
1609                 return;
1610
1611         if (ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen,
1612                                    &elems, 0) == ParseFailed)
1613                 return;
1614
1615         use_protection = 0;
1616         if (elems.erp_info && elems.erp_info_len >= 1) {
1617                 use_protection =
1618                         (elems.erp_info[0] & ERP_INFO_USE_PROTECTION) != 0;
1619         }
1620
1621         if (use_protection != !!wpa_s->mlme.use_protection) {
1622                 wpa_printf(MSG_DEBUG, "MLME: CTS protection %s (BSSID=" MACSTR
1623                            ")",
1624                            use_protection ? "enabled" : "disabled",
1625                            MAC2STR(wpa_s->bssid));
1626                 wpa_s->mlme.use_protection = use_protection ? 1 : 0;
1627                 wpa_s->mlme.cts_protect_erp_frames = use_protection;
1628         }
1629
1630         if (elems.wmm && wpa_s->mlme.wmm_enabled) {
1631                 ieee80211_sta_wmm_params(wpa_s, elems.wmm,
1632                                          elems.wmm_len);
1633         }
1634 }
1635
1636
1637 static void ieee80211_rx_mgmt_probe_req(struct wpa_supplicant *wpa_s,
1638                                         struct ieee80211_mgmt *mgmt,
1639                                         size_t len,
1640                                         struct ieee80211_rx_status *rx_status)
1641 {
1642         int tx_last_beacon, adhoc;
1643 #if 0 /* FIX */
1644         struct ieee80211_mgmt *resp;
1645 #endif
1646         u8 *pos, *end;
1647         struct wpa_ssid *ssid = wpa_s->current_ssid;
1648
1649         adhoc = ssid && ssid->mode == WPAS_MODE_IBSS;
1650
1651         if (!adhoc || wpa_s->mlme.state != IEEE80211_IBSS_JOINED ||
1652             len < 24 + 2 || wpa_s->mlme.probe_resp == NULL)
1653                 return;
1654
1655 #if 0 /* FIX */
1656         if (local->hw->tx_last_beacon)
1657                 tx_last_beacon = local->hw->tx_last_beacon(local->mdev);
1658         else
1659 #endif
1660                 tx_last_beacon = 1;
1661
1662 #ifdef IEEE80211_IBSS_DEBUG
1663         wpa_printf(MSG_DEBUG, "MLME: RX ProbeReq SA=" MACSTR " DA=" MACSTR
1664                    " BSSID=" MACSTR " (tx_last_beacon=%d)",
1665                    MAC2STR(mgmt->sa), MAC2STR(mgmt->da),
1666                    MAC2STR(mgmt->bssid), tx_last_beacon);
1667 #endif /* IEEE80211_IBSS_DEBUG */
1668
1669         if (!tx_last_beacon)
1670                 return;
1671
1672         if (os_memcmp(mgmt->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
1673             os_memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
1674                 return;
1675
1676         end = ((u8 *) mgmt) + len;
1677         pos = mgmt->u.probe_req.variable;
1678         if (pos[0] != WLAN_EID_SSID ||
1679             pos + 2 + pos[1] > end) {
1680                 wpa_printf(MSG_DEBUG, "MLME: Invalid SSID IE in ProbeReq from "
1681                            MACSTR, MAC2STR(mgmt->sa));
1682                 return;
1683         }
1684         if (pos[1] != 0 &&
1685             (pos[1] != wpa_s->mlme.ssid_len ||
1686              os_memcmp(pos + 2, wpa_s->mlme.ssid, wpa_s->mlme.ssid_len) != 0))
1687         {
1688                 /* Ignore ProbeReq for foreign SSID */
1689                 return;
1690         }
1691
1692 #if 0 /* FIX */
1693         /* Reply with ProbeResp */
1694         skb = skb_copy(wpa_s->mlme.probe_resp, GFP_ATOMIC);
1695         if (skb == NULL)
1696                 return;
1697
1698         resp = (struct ieee80211_mgmt *) skb->data;
1699         os_memcpy(resp->da, mgmt->sa, ETH_ALEN);
1700 #ifdef IEEE80211_IBSS_DEBUG
1701         wpa_printf(MSG_DEBUG, "MLME: Sending ProbeResp to " MACSTR,
1702                    MAC2STR(resp->da));
1703 #endif /* IEEE80211_IBSS_DEBUG */
1704         ieee80211_sta_tx(wpa_s, skb, 0, 1);
1705 #endif
1706 }
1707
1708
1709 #ifdef CONFIG_IEEE80211R
1710 static void ieee80211_rx_mgmt_ft_action(struct wpa_supplicant *wpa_s,
1711                                         struct ieee80211_mgmt *mgmt,
1712                                         size_t len,
1713                                         struct ieee80211_rx_status *rx_status)
1714 {
1715         union wpa_event_data data;
1716         u16 status;
1717         u8 *sta_addr, *target_ap_addr;
1718
1719         if (len < 24 + 1 + sizeof(mgmt->u.action.u.ft_action_resp)) {
1720                 wpa_printf(MSG_DEBUG, "MLME: Too short FT Action frame");
1721                 return;
1722         }
1723
1724         /*
1725          * Only FT Action Response is needed for now since reservation
1726          * protocol is not supported.
1727          */
1728         if (mgmt->u.action.u.ft_action_resp.action != 2) {
1729                 wpa_printf(MSG_DEBUG, "MLME: Unexpected FT Action %d",
1730                            mgmt->u.action.u.ft_action_resp.action);
1731                 return;
1732         }
1733
1734         status = le_to_host16(mgmt->u.action.u.ft_action_resp.status_code);
1735         sta_addr = mgmt->u.action.u.ft_action_resp.sta_addr;
1736         target_ap_addr = mgmt->u.action.u.ft_action_resp.target_ap_addr;
1737         wpa_printf(MSG_DEBUG, "MLME: Received FT Action Response: STA " MACSTR
1738                    " TargetAP " MACSTR " Status Code %d",
1739                    MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
1740         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
1741                 wpa_printf(MSG_DEBUG, "MLME: Foreign STA Address " MACSTR
1742                            " in FT Action Response", MAC2STR(sta_addr));
1743                 return;
1744         }
1745
1746         if (status) {
1747                 wpa_printf(MSG_DEBUG, "MLME: FT Action Response indicates "
1748                            "failure (status code %d)", status);
1749                 /* TODO: report error to FT code(?) */
1750                 return;
1751         }
1752
1753         os_memset(&data, 0, sizeof(data));
1754         data.ft_ies.ies = mgmt->u.action.u.ft_action_resp.variable;
1755         data.ft_ies.ies_len = len - (mgmt->u.action.u.ft_action_resp.variable -
1756                                      (u8 *) mgmt);
1757         data.ft_ies.ft_action = 1;
1758         os_memcpy(data.ft_ies.target_ap, target_ap_addr, ETH_ALEN);
1759         wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &data);
1760         /* TODO: should only re-associate, if EVENT_FT_RESPONSE was processed
1761          * successfully */
1762         wpa_s->mlme.prev_bssid_set = 1;
1763         wpa_s->mlme.auth_alg = WLAN_AUTH_FT;
1764         os_memcpy(wpa_s->mlme.prev_bssid, wpa_s->bssid, ETH_ALEN);
1765         os_memcpy(wpa_s->bssid, target_ap_addr, ETH_ALEN);
1766         ieee80211_associate(wpa_s);
1767 }
1768 #endif /* CONFIG_IEEE80211R */
1769
1770
1771 #ifdef CONFIG_IEEE80211W
1772
1773 /* MLME-SAQuery.response */
1774 static int ieee80211_sta_send_sa_query_resp(struct wpa_supplicant *wpa_s,
1775                                             const u8 *addr, const u8 *trans_id)
1776 {
1777         struct ieee80211_mgmt *mgmt;
1778         int res;
1779         size_t len;
1780
1781         mgmt = os_zalloc(sizeof(*mgmt));
1782         if (mgmt == NULL) {
1783                 wpa_printf(MSG_DEBUG, "MLME: Failed to allocate buffer for "
1784                            "SA Query action frame");
1785                 return -1;
1786         }
1787
1788         len = 24;
1789         os_memcpy(mgmt->da, addr, ETH_ALEN);
1790         os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
1791         os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
1792         mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1793                                            WLAN_FC_STYPE_ACTION);
1794         mgmt->u.action.category = WLAN_ACTION_SA_QUERY;
1795         mgmt->u.action.u.sa_query_resp.action = WLAN_SA_QUERY_RESPONSE;
1796         os_memcpy(mgmt->u.action.u.sa_query_resp.trans_id, trans_id,
1797                   WLAN_SA_QUERY_TR_ID_LEN);
1798         len += 1 + sizeof(mgmt->u.action.u.sa_query_resp);
1799
1800         res = ieee80211_sta_tx(wpa_s, (u8 *) mgmt, len);
1801         os_free(mgmt);
1802
1803         return res;
1804 }
1805
1806
1807 static void ieee80211_rx_mgmt_sa_query_action(
1808         struct wpa_supplicant *wpa_s, struct ieee80211_mgmt *mgmt, size_t len,
1809         struct ieee80211_rx_status *rx_status)
1810 {
1811         if (len < 24 + 1 + sizeof(mgmt->u.action.u.sa_query_req)) {
1812                 wpa_printf(MSG_DEBUG, "MLME: Too short SA Query Action frame");
1813                 return;
1814         }
1815
1816         if (mgmt->u.action.u.sa_query_req.action != WLAN_SA_QUERY_REQUEST) {
1817                 wpa_printf(MSG_DEBUG, "MLME: Unexpected SA Query Action %d",
1818                            mgmt->u.action.u.sa_query_req.action);
1819                 return;
1820         }
1821
1822         if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) != 0) {
1823                 wpa_printf(MSG_DEBUG, "MLME: Ignore SA Query from unknown "
1824                            "source " MACSTR, MAC2STR(mgmt->sa));
1825                 return;
1826         }
1827
1828         if (wpa_s->mlme.state == IEEE80211_ASSOCIATE) {
1829                 wpa_printf(MSG_DEBUG, "MLME: Ignore SA query request during "
1830                            "association process");
1831                 return;
1832         }
1833
1834         wpa_printf(MSG_DEBUG, "MLME: Replying to SA Query request");
1835         ieee80211_sta_send_sa_query_resp(wpa_s, mgmt->sa, mgmt->u.action.u.
1836                                          sa_query_req.trans_id);
1837 }
1838
1839 #endif /* CONFIG_IEEE80211W */
1840
1841
1842 static void dump_tspec(struct wmm_tspec_element *tspec)
1843 {
1844         int up, psb, dir, tid;
1845         u16 val;
1846
1847         up = (tspec->ts_info[1] >> 3) & 0x07;
1848         psb = (tspec->ts_info[1] >> 2) & 0x01;
1849         dir = (tspec->ts_info[0] >> 5) & 0x03;
1850         tid = (tspec->ts_info[0] >> 1) & 0x0f;
1851         wpa_printf(MSG_DEBUG, "WMM: TS Info: UP=%d PSB=%d Direction=%d TID=%d",
1852                    up, psb, dir, tid);
1853         val = le_to_host16(tspec->nominal_msdu_size);
1854         wpa_printf(MSG_DEBUG, "WMM: Nominal MSDU Size: %d%s",
1855                    val & 0x7fff, val & 0x8000 ? " (fixed)" : "");
1856         wpa_printf(MSG_DEBUG, "WMM: Mean Data Rate: %u bps",
1857                    le_to_host32(tspec->mean_data_rate));
1858         wpa_printf(MSG_DEBUG, "WMM: Minimum PHY Rate: %u bps",
1859                    le_to_host32(tspec->minimum_phy_rate));
1860         val = le_to_host16(tspec->surplus_bandwidth_allowance);
1861         wpa_printf(MSG_DEBUG, "WMM: Surplus Bandwidth Allowance: %u.%04u",
1862                    val >> 13, 10000 * (val & 0x1fff) / 0x2000);
1863         val = le_to_host16(tspec->medium_time);
1864         wpa_printf(MSG_DEBUG, "WMM: Medium Time: %u (= %u usec/sec)",
1865                    val, 32 * val);
1866 }
1867
1868
1869 static int is_wmm_tspec(const u8 *ie, size_t len)
1870 {
1871         const struct wmm_tspec_element *tspec;
1872
1873         if (len < sizeof(*tspec))
1874                 return 0;
1875
1876         tspec = (const struct wmm_tspec_element *) ie;
1877         if (tspec->eid != WLAN_EID_VENDOR_SPECIFIC ||
1878             tspec->length < sizeof(*tspec) - 2 ||
1879             tspec->oui[0] != 0x00 || tspec->oui[1] != 0x50 ||
1880             tspec->oui[2] != 0xf2 || tspec->oui_type != 2 ||
1881             tspec->oui_subtype != 2 || tspec->version != 1)
1882                 return 0;
1883
1884         return 1;
1885 }
1886
1887
1888 static void ieee80211_rx_addts_resp(
1889         struct wpa_supplicant *wpa_s, struct ieee80211_mgmt *mgmt, size_t len,
1890         size_t var_len)
1891 {
1892         struct wmm_tspec_element *tspec;
1893
1894         wpa_printf(MSG_DEBUG, "WMM: Received ADDTS Response");
1895         wpa_hexdump(MSG_MSGDUMP, "WMM: ADDTS Response IE(s)",
1896                     mgmt->u.action.u.wmm_action.variable, var_len);
1897         if (!is_wmm_tspec(mgmt->u.action.u.wmm_action.variable, var_len))
1898                 return;
1899         tspec = (struct wmm_tspec_element *)
1900                 mgmt->u.action.u.wmm_action.variable;
1901         dump_tspec(tspec);
1902 }
1903
1904
1905 static void ieee80211_rx_delts(
1906         struct wpa_supplicant *wpa_s, struct ieee80211_mgmt *mgmt, size_t len,
1907         size_t var_len)
1908 {
1909         struct wmm_tspec_element *tspec;
1910
1911         wpa_printf(MSG_DEBUG, "WMM: Received DELTS");
1912         wpa_hexdump(MSG_MSGDUMP, "WMM: DELTS IE(s)",
1913                     mgmt->u.action.u.wmm_action.variable, var_len);
1914         if (!is_wmm_tspec(mgmt->u.action.u.wmm_action.variable, var_len))
1915                 return;
1916         tspec = (struct wmm_tspec_element *)
1917                 mgmt->u.action.u.wmm_action.variable;
1918         dump_tspec(tspec);
1919 }
1920
1921
1922 static void ieee80211_rx_mgmt_wmm_action(
1923         struct wpa_supplicant *wpa_s, struct ieee80211_mgmt *mgmt, size_t len,
1924         struct ieee80211_rx_status *rx_status)
1925 {
1926         size_t alen;
1927
1928         alen = mgmt->u.action.u.wmm_action.variable - (u8 *) mgmt;
1929         if (len < alen) {
1930                 wpa_printf(MSG_DEBUG, "WMM: Received Action frame too short");
1931                 return;
1932         }
1933
1934         wpa_printf(MSG_DEBUG, "WMM: Received Action frame: Action Code %d, "
1935                    "Dialog Token %d, Status Code %d",
1936                    mgmt->u.action.u.wmm_action.action_code,
1937                    mgmt->u.action.u.wmm_action.dialog_token,
1938                    mgmt->u.action.u.wmm_action.status_code);
1939
1940         switch (mgmt->u.action.u.wmm_action.action_code) {
1941         case WMM_ACTION_CODE_ADDTS_RESP:
1942                 ieee80211_rx_addts_resp(wpa_s, mgmt, len, len - alen);
1943                 break;
1944         case WMM_ACTION_CODE_DELTS:
1945                 ieee80211_rx_delts(wpa_s, mgmt, len, len - alen);
1946                 break;
1947         default:
1948                 wpa_printf(MSG_DEBUG, "WMM: Unsupported Action Code %d",
1949                            mgmt->u.action.u.wmm_action.action_code);
1950                 break;
1951         }
1952 }
1953
1954
1955 static void ieee80211_rx_mgmt_action(struct wpa_supplicant *wpa_s,
1956                                      struct ieee80211_mgmt *mgmt,
1957                                      size_t len,
1958                                      struct ieee80211_rx_status *rx_status)
1959 {
1960         wpa_printf(MSG_DEBUG, "MLME: received Action frame");
1961
1962         if (len < 25)
1963                 return;
1964
1965         switch (mgmt->u.action.category) {
1966 #ifdef CONFIG_IEEE80211R
1967         case WLAN_ACTION_FT:
1968                 ieee80211_rx_mgmt_ft_action(wpa_s, mgmt, len, rx_status);
1969                 break;
1970 #endif /* CONFIG_IEEE80211R */
1971 #ifdef CONFIG_IEEE80211W
1972         case WLAN_ACTION_SA_QUERY:
1973                 ieee80211_rx_mgmt_sa_query_action(wpa_s, mgmt, len, rx_status);
1974                 break;
1975 #endif /* CONFIG_IEEE80211W */
1976         case WLAN_ACTION_WMM:
1977                 ieee80211_rx_mgmt_wmm_action(wpa_s, mgmt, len, rx_status);
1978                 break;
1979         case WLAN_ACTION_PUBLIC:
1980                 if (wpa_s->mlme.public_action_cb) {
1981                         wpa_s->mlme.public_action_cb(
1982                                 wpa_s->mlme.public_action_cb_ctx,
1983                                 (u8 *) mgmt, len, rx_status->freq);
1984                         return;
1985                 }
1986                 break;
1987         default:
1988                 wpa_printf(MSG_DEBUG, "MLME: unknown Action Category %d",
1989                            mgmt->u.action.category);
1990                 break;
1991         }
1992 }
1993
1994
1995 static void ieee80211_sta_rx_mgmt(struct wpa_supplicant *wpa_s,
1996                                   const u8 *buf, size_t len,
1997                                   struct ieee80211_rx_status *rx_status)
1998 {
1999         struct ieee80211_mgmt *mgmt;
2000         u16 fc;
2001
2002         if (len < 24)
2003                 return;
2004
2005         mgmt = (struct ieee80211_mgmt *) buf;
2006         fc = le_to_host16(mgmt->frame_control);
2007
2008         switch (WLAN_FC_GET_STYPE(fc)) {
2009         case WLAN_FC_STYPE_PROBE_REQ:
2010                 ieee80211_rx_mgmt_probe_req(wpa_s, mgmt, len, rx_status);
2011                 break;
2012         case WLAN_FC_STYPE_PROBE_RESP:
2013                 ieee80211_rx_mgmt_probe_resp(wpa_s, mgmt, len, rx_status);
2014                 break;
2015         case WLAN_FC_STYPE_BEACON:
2016                 ieee80211_rx_mgmt_beacon(wpa_s, mgmt, len, rx_status);
2017                 break;
2018         case WLAN_FC_STYPE_AUTH:
2019                 ieee80211_rx_mgmt_auth(wpa_s, mgmt, len, rx_status);
2020                 break;
2021         case WLAN_FC_STYPE_ASSOC_RESP:
2022                 ieee80211_rx_mgmt_assoc_resp(wpa_s, mgmt, len, rx_status, 0);
2023                 break;
2024         case WLAN_FC_STYPE_REASSOC_RESP:
2025                 ieee80211_rx_mgmt_assoc_resp(wpa_s, mgmt, len, rx_status, 1);
2026                 break;
2027         case WLAN_FC_STYPE_DEAUTH:
2028                 ieee80211_rx_mgmt_deauth(wpa_s, mgmt, len, rx_status);
2029                 break;
2030         case WLAN_FC_STYPE_DISASSOC:
2031                 ieee80211_rx_mgmt_disassoc(wpa_s, mgmt, len, rx_status);
2032                 break;
2033         case WLAN_FC_STYPE_ACTION:
2034                 ieee80211_rx_mgmt_action(wpa_s, mgmt, len, rx_status);
2035                 break;
2036         default:
2037                 wpa_printf(MSG_DEBUG, "MLME: received unknown management "
2038                            "frame - stype=%d", WLAN_FC_GET_STYPE(fc));
2039                 break;
2040         }
2041 }
2042
2043
2044 static void ieee80211_sta_rx_scan(struct wpa_supplicant *wpa_s,
2045                                   const u8 *buf, size_t len,
2046                                   struct ieee80211_rx_status *rx_status)
2047 {
2048         struct ieee80211_mgmt *mgmt;
2049         u16 fc;
2050
2051         if (len < 24)
2052                 return;
2053
2054         mgmt = (struct ieee80211_mgmt *) buf;
2055         fc = le_to_host16(mgmt->frame_control);
2056
2057         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT) {
2058                 if (WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
2059                         ieee80211_rx_mgmt_probe_resp(wpa_s, mgmt,
2060                                                      len, rx_status);
2061                 } else if (WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON) {
2062                         ieee80211_rx_mgmt_beacon(wpa_s, mgmt, len, rx_status);
2063                 }
2064         }
2065 }
2066
2067
2068 static int ieee80211_sta_active_ibss(struct wpa_supplicant *wpa_s)
2069 {
2070         int active = 0;
2071
2072 #if 0 /* FIX */
2073         list_for_each(ptr, &local->sta_list) {
2074                 sta = list_entry(ptr, struct sta_info, list);
2075                 if (sta->dev == dev &&
2076                     time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL,
2077                                jiffies)) {
2078                         active++;
2079                         break;
2080                 }
2081         }
2082 #endif
2083
2084         return active;
2085 }
2086
2087
2088 static void ieee80211_sta_expire(struct wpa_supplicant *wpa_s)
2089 {
2090 #if 0 /* FIX */
2091         list_for_each_safe(ptr, n, &local->sta_list) {
2092                 sta = list_entry(ptr, struct sta_info, list);
2093                 if (time_after(jiffies, sta->last_rx +
2094                                IEEE80211_IBSS_INACTIVITY_LIMIT)) {
2095                         wpa_printf(MSG_DEBUG, "MLME: expiring inactive STA "
2096                                    MACSTR, MAC2STR(sta->addr));
2097                         sta_info_free(local, sta, 1);
2098                 }
2099         }
2100 #endif
2101 }
2102
2103
2104 static void ieee80211_sta_merge_ibss(struct wpa_supplicant *wpa_s)
2105 {
2106         struct wpa_driver_scan_params params;
2107
2108         ieee80211_reschedule_timer(wpa_s, IEEE80211_IBSS_MERGE_INTERVAL);
2109
2110         ieee80211_sta_expire(wpa_s);
2111         if (ieee80211_sta_active_ibss(wpa_s))
2112                 return;
2113
2114         wpa_printf(MSG_DEBUG, "MLME: No active IBSS STAs - trying to scan for "
2115                    "other IBSS networks with same SSID (merge)");
2116         os_memset(&params, 0, sizeof(params));
2117         params.ssids[0].ssid = wpa_s->mlme.ssid;
2118         params.ssids[0].ssid_len = wpa_s->mlme.ssid_len;
2119         params.num_ssids = wpa_s->mlme.ssid_len ? 1 : 0;
2120         ieee80211_sta_req_scan(wpa_s, &params);
2121 }
2122
2123
2124 static void ieee80211_sta_timer(void *eloop_ctx, void *timeout_ctx)
2125 {
2126         struct wpa_supplicant *wpa_s = eloop_ctx;
2127
2128         switch (wpa_s->mlme.state) {
2129         case IEEE80211_DISABLED:
2130                 break;
2131         case IEEE80211_AUTHENTICATE:
2132                 ieee80211_authenticate(wpa_s);
2133                 break;
2134         case IEEE80211_ASSOCIATE:
2135                 ieee80211_associate(wpa_s);
2136                 break;
2137         case IEEE80211_ASSOCIATED:
2138                 ieee80211_associated(wpa_s);
2139                 break;
2140         case IEEE80211_IBSS_SEARCH:
2141                 ieee80211_sta_find_ibss(wpa_s);
2142                 break;
2143         case IEEE80211_IBSS_JOINED:
2144                 ieee80211_sta_merge_ibss(wpa_s);
2145                 break;
2146         default:
2147                 wpa_printf(MSG_DEBUG, "ieee80211_sta_timer: Unknown state %d",
2148                            wpa_s->mlme.state);
2149                 break;
2150         }
2151
2152         if (ieee80211_privacy_mismatch(wpa_s)) {
2153                 wpa_printf(MSG_DEBUG, "MLME: privacy configuration mismatch "
2154                            "and mixed-cell disabled - disassociate");
2155
2156                 ieee80211_send_disassoc(wpa_s, WLAN_REASON_UNSPECIFIED);
2157                 ieee80211_set_associated(wpa_s, 0);
2158         }
2159 }
2160
2161
2162 static void ieee80211_sta_new_auth(struct wpa_supplicant *wpa_s)
2163 {
2164         struct wpa_ssid *ssid = wpa_s->current_ssid;
2165         if (ssid && ssid->mode != WPAS_MODE_INFRA)
2166                 return;
2167
2168 #if 0 /* FIX */
2169         if (local->hw->reset_tsf) {
2170                 /* Reset own TSF to allow time synchronization work. */
2171                 local->hw->reset_tsf(local->mdev);
2172         }
2173 #endif
2174
2175         wpa_s->mlme.wmm_last_param_set = -1; /* allow any WMM update */
2176
2177
2178         if (wpa_s->mlme.auth_algs & WPA_AUTH_ALG_OPEN)
2179                 wpa_s->mlme.auth_alg = WLAN_AUTH_OPEN;
2180         else if (wpa_s->mlme.auth_algs & WPA_AUTH_ALG_SHARED)
2181                 wpa_s->mlme.auth_alg = WLAN_AUTH_SHARED_KEY;
2182         else if (wpa_s->mlme.auth_algs & WPA_AUTH_ALG_LEAP)
2183                 wpa_s->mlme.auth_alg = WLAN_AUTH_LEAP;
2184         else
2185                 wpa_s->mlme.auth_alg = WLAN_AUTH_OPEN;
2186         wpa_printf(MSG_DEBUG, "MLME: Initial auth_alg=%d",
2187                    wpa_s->mlme.auth_alg);
2188         wpa_s->mlme.auth_transaction = -1;
2189         wpa_s->mlme.auth_tries = wpa_s->mlme.assoc_tries = 0;
2190         ieee80211_authenticate(wpa_s);
2191 }
2192
2193
2194 static int ieee80211_ibss_allowed(struct wpa_supplicant *wpa_s)
2195 {
2196 #if 0 /* FIX */
2197         int m, c;
2198
2199         for (m = 0; m < local->hw->num_modes; m++) {
2200                 struct ieee80211_hw_modes *mode = &local->hw->modes[m];
2201                 if (mode->mode != local->conf.phymode)
2202                         continue;
2203                 for (c = 0; c < mode->num_channels; c++) {
2204                         struct ieee80211_channel *chan = &mode->channels[c];
2205                         if (chan->flag & IEEE80211_CHAN_W_SCAN &&
2206                             chan->chan == local->conf.channel) {
2207                                 if (chan->flag & IEEE80211_CHAN_W_IBSS)
2208                                         return 1;
2209                                 break;
2210                         }
2211                 }
2212         }
2213 #endif
2214
2215         return 0;
2216 }
2217
2218
2219 static int ieee80211_sta_join_ibss(struct wpa_supplicant *wpa_s,
2220                                    struct ieee80211_sta_bss *bss)
2221 {
2222         int res = 0, rates, done = 0, bssid_changed;
2223         struct ieee80211_mgmt *mgmt;
2224 #if 0 /* FIX */
2225         struct ieee80211_tx_control control;
2226         struct ieee80211_rate *rate;
2227         struct rate_control_extra extra;
2228 #endif
2229         u8 *pos, *buf;
2230         size_t len;
2231
2232         /* Remove possible STA entries from other IBSS networks. */
2233 #if 0 /* FIX */
2234         sta_info_flush(local, NULL);
2235
2236         if (local->hw->reset_tsf) {
2237                 /* Reset own TSF to allow time synchronization work. */
2238                 local->hw->reset_tsf(local->mdev);
2239         }
2240 #endif
2241         bssid_changed = os_memcmp(wpa_s->bssid, bss->bssid, ETH_ALEN);
2242         os_memcpy(wpa_s->bssid, bss->bssid, ETH_ALEN);
2243         if (bssid_changed)
2244                 wpas_notify_bssid_changed(wpa_s);
2245
2246 #if 0 /* FIX */
2247         local->conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10;
2248
2249         sdata->drop_unencrypted = bss->capability &
2250                 host_to_le16(WLAN_CAPABILITY_PRIVACY) ? 1 : 0;
2251 #endif
2252
2253 #if 0 /* FIX */
2254         os_memset(&rq, 0, sizeof(rq));
2255         rq.m = bss->freq * 100000;
2256         rq.e = 1;
2257         res = ieee80211_ioctl_siwfreq(wpa_s, NULL, &rq, NULL);
2258 #endif
2259
2260         if (!ieee80211_ibss_allowed(wpa_s)) {
2261 #if 0 /* FIX */
2262                 wpa_printf(MSG_DEBUG, "MLME: IBSS not allowed on channel %d "
2263                            "(%d MHz)", local->conf.channel,
2264                            local->conf.freq);
2265 #endif
2266                 return -1;
2267         }
2268
2269         /* Set beacon template based on scan results */
2270         buf = os_malloc(400);
2271         len = 0;
2272         do {
2273                 if (buf == NULL)
2274                         break;
2275
2276                 mgmt = (struct ieee80211_mgmt *) buf;
2277                 len += 24 + sizeof(mgmt->u.beacon);
2278                 os_memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon));
2279                 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
2280                                                    WLAN_FC_STYPE_BEACON);
2281                 os_memset(mgmt->da, 0xff, ETH_ALEN);
2282                 os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
2283                 os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
2284 #if 0 /* FIX */
2285                 mgmt->u.beacon.beacon_int =
2286                         host_to_le16(local->conf.beacon_int);
2287 #endif
2288                 mgmt->u.beacon.capab_info = host_to_le16(bss->capability);
2289
2290                 pos = buf + len;
2291                 len += 2 + wpa_s->mlme.ssid_len;
2292                 *pos++ = WLAN_EID_SSID;
2293                 *pos++ = wpa_s->mlme.ssid_len;
2294                 os_memcpy(pos, wpa_s->mlme.ssid, wpa_s->mlme.ssid_len);
2295
2296                 rates = bss->supp_rates_len;
2297                 if (rates > 8)
2298                         rates = 8;
2299                 pos = buf + len;
2300                 len += 2 + rates;
2301                 *pos++ = WLAN_EID_SUPP_RATES;
2302                 *pos++ = rates;
2303                 os_memcpy(pos, bss->supp_rates, rates);
2304
2305                 pos = buf + len;
2306                 len += 2 + 1;
2307                 *pos++ = WLAN_EID_DS_PARAMS;
2308                 *pos++ = 1;
2309                 *pos++ = bss->channel;
2310
2311                 pos = buf + len;
2312                 len += 2 + 2;
2313                 *pos++ = WLAN_EID_IBSS_PARAMS;
2314                 *pos++ = 2;
2315                 /* FIX: set ATIM window based on scan results */
2316                 *pos++ = 0;
2317                 *pos++ = 0;
2318
2319                 if (bss->supp_rates_len > 8) {
2320                         rates = bss->supp_rates_len - 8;
2321                         pos = buf + len;
2322                         len += 2 + rates;
2323                         *pos++ = WLAN_EID_EXT_SUPP_RATES;
2324                         *pos++ = rates;
2325                         os_memcpy(pos, &bss->supp_rates[8], rates);
2326                 }
2327
2328 #if 0 /* FIX */
2329                 os_memset(&control, 0, sizeof(control));
2330                 control.pkt_type = PKT_PROBE_RESP;
2331                 os_memset(&extra, 0, sizeof(extra));
2332                 extra.endidx = local->num_curr_rates;
2333                 rate = rate_control_get_rate(wpa_s, skb, &extra);
2334                 if (rate == NULL) {
2335                         wpa_printf(MSG_DEBUG, "MLME: Failed to determine TX "
2336                                    "rate for IBSS beacon");
2337                         break;
2338                 }
2339                 control.tx_rate = (wpa_s->mlme.short_preamble &&
2340                                    (rate->flags & IEEE80211_RATE_PREAMBLE2)) ?
2341                         rate->val2 : rate->val;
2342                 control.antenna_sel = local->conf.antenna_sel;
2343                 control.power_level = local->conf.power_level;
2344                 control.no_ack = 1;
2345                 control.retry_limit = 1;
2346                 control.rts_cts_duration = 0;
2347 #endif
2348
2349 #if 0 /* FIX */
2350                 wpa_s->mlme.probe_resp = skb_copy(skb, GFP_ATOMIC);
2351                 if (wpa_s->mlme.probe_resp) {
2352                         mgmt = (struct ieee80211_mgmt *)
2353                                 wpa_s->mlme.probe_resp->data;
2354                         mgmt->frame_control =
2355                                 IEEE80211_FC(WLAN_FC_TYPE_MGMT,
2356                                              WLAN_FC_STYPE_PROBE_RESP);
2357                 } else {
2358                         wpa_printf(MSG_DEBUG, "MLME: Could not allocate "
2359                                    "ProbeResp template for IBSS");
2360                 }
2361
2362                 if (local->hw->beacon_update &&
2363                     local->hw->beacon_update(wpa_s, skb, &control) == 0) {
2364                         wpa_printf(MSG_DEBUG, "MLME: Configured IBSS beacon "
2365                                    "template based on scan results");
2366                         skb = NULL;
2367                 }
2368
2369                 rates = 0;
2370                 for (i = 0; i < bss->supp_rates_len; i++) {
2371                         int rate = (bss->supp_rates[i] & 0x7f) * 5;
2372                         if (local->conf.phymode == MODE_ATHEROS_TURBO)
2373                                 rate *= 2;
2374                         for (j = 0; j < local->num_curr_rates; j++)
2375                                 if (local->curr_rates[j] == rate)
2376                                         rates |= BIT(j);
2377                 }
2378                 wpa_s->mlme.supp_rates_bits = rates;
2379 #endif
2380                 done = 1;
2381         } while (0);
2382
2383         os_free(buf);
2384         if (!done) {
2385                 wpa_printf(MSG_DEBUG, "MLME: Failed to configure IBSS beacon "
2386                            "template");
2387         }
2388
2389         wpa_s->mlme.state = IEEE80211_IBSS_JOINED;
2390         ieee80211_reschedule_timer(wpa_s, IEEE80211_IBSS_MERGE_INTERVAL);
2391
2392         return res;
2393 }
2394
2395
2396 #if 0 /* FIX */
2397 static int ieee80211_sta_create_ibss(struct wpa_supplicant *wpa_s)
2398 {
2399         struct ieee80211_sta_bss *bss;
2400         u8 bssid[ETH_ALEN], *pos;
2401         int i;
2402
2403 #if 0
2404         /* Easier testing, use fixed BSSID. */
2405         os_memset(bssid, 0xfe, ETH_ALEN);
2406 #else
2407         /* Generate random, not broadcast, locally administered BSSID. Mix in
2408          * own MAC address to make sure that devices that do not have proper
2409          * random number generator get different BSSID. */
2410         os_get_random(bssid, ETH_ALEN);
2411         for (i = 0; i < ETH_ALEN; i++)
2412                 bssid[i] ^= wpa_s->own_addr[i];
2413         bssid[0] &= ~0x01;
2414         bssid[0] |= 0x02;
2415 #endif
2416
2417         wpa_printf(MSG_DEBUG, "MLME: Creating new IBSS network, BSSID "
2418                    MACSTR "", MAC2STR(bssid));
2419
2420         bss = ieee80211_bss_add(wpa_s, bssid);
2421         if (bss == NULL)
2422                 return -ENOMEM;
2423
2424 #if 0 /* FIX */
2425         if (local->conf.beacon_int == 0)
2426                 local->conf.beacon_int = 100;
2427         bss->beacon_int = local->conf.beacon_int;
2428         bss->hw_mode = local->conf.phymode;
2429         bss->channel = local->conf.channel;
2430         bss->freq = local->conf.freq;
2431 #endif
2432         os_get_time(&bss->last_update);
2433         bss->capability = host_to_le16(WLAN_CAPABILITY_IBSS);
2434 #if 0 /* FIX */
2435         if (sdata->default_key) {
2436                 bss->capability |= host_to_le16(WLAN_CAPABILITY_PRIVACY);
2437         } else
2438                 sdata->drop_unencrypted = 0;
2439         bss->supp_rates_len = local->num_curr_rates;
2440 #endif
2441         pos = bss->supp_rates;
2442 #if 0 /* FIX */
2443         for (i = 0; i < local->num_curr_rates; i++) {
2444                 int rate = local->curr_rates[i];
2445                 if (local->conf.phymode == MODE_ATHEROS_TURBO)
2446                         rate /= 2;
2447                 *pos++ = (u8) (rate / 5);
2448         }
2449 #endif
2450
2451         return ieee80211_sta_join_ibss(wpa_s, bss);
2452 }
2453 #endif
2454
2455
2456 static int ieee80211_sta_find_ibss(struct wpa_supplicant *wpa_s)
2457 {
2458         struct ieee80211_sta_bss *bss;
2459         int found = 0;
2460         u8 bssid[ETH_ALEN];
2461         int active_ibss;
2462         struct os_time now;
2463
2464         if (wpa_s->mlme.ssid_len == 0)
2465                 return -EINVAL;
2466
2467         active_ibss = ieee80211_sta_active_ibss(wpa_s);
2468 #ifdef IEEE80211_IBSS_DEBUG
2469         wpa_printf(MSG_DEBUG, "MLME: sta_find_ibss (active_ibss=%d)",
2470                    active_ibss);
2471 #endif /* IEEE80211_IBSS_DEBUG */
2472         for (bss = wpa_s->mlme.sta_bss_list; bss; bss = bss->next) {
2473                 if (wpa_s->mlme.ssid_len != bss->ssid_len ||
2474                     os_memcmp(wpa_s->mlme.ssid, bss->ssid, bss->ssid_len) != 0
2475                     || !(bss->capability & WLAN_CAPABILITY_IBSS))
2476                         continue;
2477 #ifdef IEEE80211_IBSS_DEBUG
2478                 wpa_printf(MSG_DEBUG, "   bssid=" MACSTR " found",
2479                            MAC2STR(bss->bssid));
2480 #endif /* IEEE80211_IBSS_DEBUG */
2481                 os_memcpy(bssid, bss->bssid, ETH_ALEN);
2482                 found = 1;
2483                 if (active_ibss ||
2484                     os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0)
2485                         break;
2486         }
2487
2488 #ifdef IEEE80211_IBSS_DEBUG
2489         wpa_printf(MSG_DEBUG, "   sta_find_ibss: selected " MACSTR " current "
2490                    MACSTR, MAC2STR(bssid), MAC2STR(wpa_s->bssid));
2491 #endif /* IEEE80211_IBSS_DEBUG */
2492         if (found && os_memcmp(wpa_s->bssid, bssid, ETH_ALEN) != 0 &&
2493             (bss = ieee80211_bss_get(wpa_s, bssid))) {
2494                 wpa_printf(MSG_DEBUG, "MLME: Selected IBSS BSSID " MACSTR
2495                            " based on configured SSID",
2496                            MAC2STR(bssid));
2497                 return ieee80211_sta_join_ibss(wpa_s, bss);
2498         }
2499 #ifdef IEEE80211_IBSS_DEBUG
2500         wpa_printf(MSG_DEBUG, "   did not try to join ibss");
2501 #endif /* IEEE80211_IBSS_DEBUG */
2502
2503         /* Selected IBSS not found in current scan results - try to scan */
2504         os_get_time(&now);
2505 #if 0 /* FIX */
2506         if (wpa_s->mlme.state == IEEE80211_IBSS_JOINED &&
2507             !ieee80211_sta_active_ibss(wpa_s)) {
2508                 ieee80211_reschedule_timer(wpa_s,
2509                                            IEEE80211_IBSS_MERGE_INTERVAL);
2510         } else if (time_after(jiffies, wpa_s->mlme.last_scan_completed +
2511                               IEEE80211_SCAN_INTERVAL)) {
2512                 wpa_printf(MSG_DEBUG, "MLME: Trigger new scan to find an IBSS "
2513                            "to join");
2514                 return ieee80211_sta_req_scan(wpa_s->mlme.ssid,
2515                                               wpa_s->mlme.ssid_len);
2516         } else if (wpa_s->mlme.state != IEEE80211_IBSS_JOINED) {
2517                 int interval = IEEE80211_SCAN_INTERVAL;
2518
2519                 if (time_after(jiffies, wpa_s->mlme.ibss_join_req +
2520                                IEEE80211_IBSS_JOIN_TIMEOUT)) {
2521                         if (wpa_s->mlme.create_ibss &&
2522                             ieee80211_ibss_allowed(wpa_s))
2523                                 return ieee80211_sta_create_ibss(wpa_s);
2524                         if (wpa_s->mlme.create_ibss) {
2525                                 wpa_printf(MSG_DEBUG, "MLME: IBSS not allowed "
2526                                            "on the configured channel %d "
2527                                            "(%d MHz)",
2528                                            local->conf.channel,
2529                                            local->conf.freq);
2530                         }
2531
2532                         /* No IBSS found - decrease scan interval and continue
2533                          * scanning. */
2534                         interval = IEEE80211_SCAN_INTERVAL_SLOW;
2535                 }
2536
2537                 wpa_s->mlme.state = IEEE80211_IBSS_SEARCH;
2538                 ieee80211_reschedule_timer(wpa_s, interval);
2539                 return 0;
2540         }
2541 #endif
2542
2543         return 0;
2544 }
2545
2546
2547 int ieee80211_sta_get_ssid(struct wpa_supplicant *wpa_s, u8 *ssid,
2548                            size_t *len)
2549 {
2550         os_memcpy(ssid, wpa_s->mlme.ssid, wpa_s->mlme.ssid_len);
2551         *len = wpa_s->mlme.ssid_len;
2552         return 0;
2553 }
2554
2555
2556 int ieee80211_sta_associate(struct wpa_supplicant *wpa_s,
2557                             struct wpa_driver_associate_params *params)
2558 {
2559         struct ieee80211_sta_bss *bss;
2560         int bssid_changed;
2561
2562         wpa_s->mlme.bssid_set = 0;
2563         wpa_s->mlme.freq = params->freq;
2564         if (params->bssid) {
2565                 bssid_changed = os_memcmp(wpa_s->bssid, params->bssid,
2566                                           ETH_ALEN);
2567                 os_memcpy(wpa_s->bssid, params->bssid, ETH_ALEN);
2568                 if (bssid_changed)
2569                         wpas_notify_bssid_changed(wpa_s);
2570
2571                 if (!is_zero_ether_addr(params->bssid))
2572                         wpa_s->mlme.bssid_set = 1;
2573                 bss = ieee80211_bss_get(wpa_s, wpa_s->bssid);
2574                 if (bss) {
2575                         wpa_s->mlme.phymode = bss->hw_mode;
2576                         wpa_s->mlme.channel = bss->channel;
2577                         wpa_s->mlme.freq = bss->freq;
2578                 }
2579         }
2580
2581 #if 0 /* FIX */
2582         /* TODO: This should always be done for IBSS, even if IEEE80211_QOS is
2583          * not defined. */
2584         if (local->hw->conf_tx) {
2585                 struct ieee80211_tx_queue_params qparam;
2586                 int i;
2587
2588                 os_memset(&qparam, 0, sizeof(qparam));
2589                 /* TODO: are these ok defaults for all hw_modes? */
2590                 qparam.aifs = 2;
2591                 qparam.cw_min =
2592                         local->conf.phymode == MODE_IEEE80211B ? 31 : 15;
2593                 qparam.cw_max = 1023;
2594                 qparam.burst_time = 0;
2595                 for (i = IEEE80211_TX_QUEUE_DATA0; i < NUM_TX_DATA_QUEUES; i++)
2596                 {
2597                         local->hw->conf_tx(wpa_s, i + IEEE80211_TX_QUEUE_DATA0,
2598                                            &qparam);
2599                 }
2600                 /* IBSS uses different parameters for Beacon sending */
2601                 qparam.cw_min++;
2602                 qparam.cw_min *= 2;
2603                 qparam.cw_min--;
2604                 local->hw->conf_tx(wpa_s, IEEE80211_TX_QUEUE_BEACON, &qparam);
2605         }
2606 #endif
2607
2608         if (wpa_s->mlme.ssid_len != params->ssid_len ||
2609             os_memcmp(wpa_s->mlme.ssid, params->ssid, params->ssid_len) != 0)
2610                 wpa_s->mlme.prev_bssid_set = 0;
2611         os_memcpy(wpa_s->mlme.ssid, params->ssid, params->ssid_len);
2612         os_memset(wpa_s->mlme.ssid + params->ssid_len, 0,
2613                   MAX_SSID_LEN - params->ssid_len);
2614         wpa_s->mlme.ssid_len = params->ssid_len;
2615         wpa_s->mlme.ssid_set = 1;
2616
2617         os_free(wpa_s->mlme.extra_ie);
2618         if (params->wpa_ie == NULL || params->wpa_ie_len == 0) {
2619                 wpa_s->mlme.extra_ie = NULL;
2620                 wpa_s->mlme.extra_ie_len = 0;
2621         } else {
2622                 wpa_s->mlme.extra_ie = os_malloc(params->wpa_ie_len);
2623                 if (wpa_s->mlme.extra_ie == NULL) {
2624                         wpa_s->mlme.extra_ie_len = 0;
2625                         return -1;
2626                 }
2627                 os_memcpy(wpa_s->mlme.extra_ie, params->wpa_ie,
2628                           params->wpa_ie_len);
2629                 wpa_s->mlme.extra_ie_len = params->wpa_ie_len;
2630         }
2631
2632         wpa_s->mlme.key_mgmt = params->key_mgmt_suite;
2633
2634         ieee80211_sta_set_channel(wpa_s, wpa_s->mlme.phymode,
2635                                   wpa_s->mlme.channel, wpa_s->mlme.freq);
2636
2637         if (params->mode == WPAS_MODE_IBSS && !wpa_s->mlme.bssid_set) {
2638                 os_get_time(&wpa_s->mlme.ibss_join_req);
2639                 wpa_s->mlme.state = IEEE80211_IBSS_SEARCH;
2640                 return ieee80211_sta_find_ibss(wpa_s);
2641         }
2642
2643         if (wpa_s->mlme.bssid_set)
2644                 ieee80211_sta_new_auth(wpa_s);
2645
2646         return 0;
2647 }
2648
2649
2650 static void ieee80211_sta_save_oper_chan(struct wpa_supplicant *wpa_s)
2651 {
2652         wpa_s->mlme.scan_oper_channel = wpa_s->mlme.channel;
2653         wpa_s->mlme.scan_oper_freq = wpa_s->mlme.freq;
2654         wpa_s->mlme.scan_oper_phymode = wpa_s->mlme.phymode;
2655 }
2656
2657
2658 static int ieee80211_sta_restore_oper_chan(struct wpa_supplicant *wpa_s)
2659 {
2660         wpa_s->mlme.channel = wpa_s->mlme.scan_oper_channel;
2661         wpa_s->mlme.freq = wpa_s->mlme.scan_oper_freq;
2662         wpa_s->mlme.phymode = wpa_s->mlme.scan_oper_phymode;
2663         if (wpa_s->mlme.freq == 0)
2664                 return 0;
2665         return ieee80211_sta_set_channel(wpa_s, wpa_s->mlme.phymode,
2666                                          wpa_s->mlme.channel,
2667                                          wpa_s->mlme.freq);
2668 }
2669
2670
2671 static int ieee80211_active_scan(struct wpa_supplicant *wpa_s)
2672 {
2673         size_t m;
2674         int c;
2675
2676         for (m = 0; m < wpa_s->mlme.num_modes; m++) {
2677                 struct hostapd_hw_modes *mode = &wpa_s->mlme.modes[m];
2678                 if ((int) mode->mode != (int) wpa_s->mlme.phymode)
2679                         continue;
2680                 for (c = 0; c < mode->num_channels; c++) {
2681                         struct hostapd_channel_data *chan = &mode->channels[c];
2682                         if (!(chan->flag & HOSTAPD_CHAN_DISABLED) &&
2683                             chan->chan == wpa_s->mlme.channel) {
2684                                 if (!(chan->flag & HOSTAPD_CHAN_PASSIVE_SCAN))
2685                                         return 1;
2686                                 break;
2687                         }
2688                 }
2689         }
2690
2691         return 0;
2692 }
2693
2694
2695 static void ieee80211_sta_scan_timer(void *eloop_ctx, void *timeout_ctx)
2696 {
2697         struct wpa_supplicant *wpa_s = eloop_ctx;
2698         struct hostapd_hw_modes *mode;
2699         struct hostapd_channel_data *chan;
2700         int skip = 0;
2701         int timeout = 0;
2702         struct wpa_ssid *ssid = wpa_s->current_ssid;
2703         int adhoc;
2704
2705         if (!wpa_s->mlme.sta_scanning || wpa_s->mlme.modes == NULL)
2706                 return;
2707
2708         adhoc = ssid && ssid->mode == 1;
2709
2710         switch (wpa_s->mlme.scan_state) {
2711         case SCAN_SET_CHANNEL:
2712                 mode = &wpa_s->mlme.modes[wpa_s->mlme.scan_hw_mode_idx];
2713                 if (wpa_s->mlme.scan_hw_mode_idx >=
2714                     (int) wpa_s->mlme.num_modes ||
2715                     (wpa_s->mlme.scan_hw_mode_idx + 1 ==
2716                      (int) wpa_s->mlme.num_modes
2717                      && wpa_s->mlme.scan_channel_idx >= mode->num_channels)) {
2718                         if (ieee80211_sta_restore_oper_chan(wpa_s)) {
2719                                 wpa_printf(MSG_DEBUG, "MLME: failed to "
2720                                            "restore operational channel after "
2721                                            "scan");
2722                         }
2723                         wpa_printf(MSG_DEBUG, "MLME: scan completed");
2724                         wpa_s->mlme.sta_scanning = 0;
2725                         os_get_time(&wpa_s->mlme.last_scan_completed);
2726                         wpa_supplicant_event(wpa_s, EVENT_SCAN_RESULTS, NULL);
2727                         if (adhoc) {
2728                                 if (!wpa_s->mlme.bssid_set ||
2729                                     (wpa_s->mlme.state ==
2730                                      IEEE80211_IBSS_JOINED &&
2731                                      !ieee80211_sta_active_ibss(wpa_s)))
2732                                         ieee80211_sta_find_ibss(wpa_s);
2733                         }
2734                         return;
2735                 }
2736                 skip = !(wpa_s->mlme.hw_modes & (1 << mode->mode));
2737                 chan = &mode->channels[wpa_s->mlme.scan_channel_idx];
2738                 if ((chan->flag & HOSTAPD_CHAN_DISABLED) ||
2739                     (adhoc && (chan->flag & HOSTAPD_CHAN_NO_IBSS)) ||
2740                     (wpa_s->mlme.hw_modes & (1 << HOSTAPD_MODE_IEEE80211G) &&
2741                      mode->mode == HOSTAPD_MODE_IEEE80211B &&
2742                      wpa_s->mlme.scan_skip_11b))
2743                         skip = 1;
2744                 if (!skip && wpa_s->mlme.scan_freqs) {
2745                         int i, found = 0;
2746                         for (i = 0; wpa_s->mlme.scan_freqs[i]; i++) {
2747                                 if (wpa_s->mlme.scan_freqs[i] == chan->freq) {
2748                                         found = 1;
2749                                         break;
2750                                 }
2751                         }
2752                         if (!found)
2753                                 skip = 1;
2754                 }
2755
2756                 if (!skip) {
2757                         wpa_printf(MSG_MSGDUMP,
2758                                    "MLME: scan channel %d (%d MHz)",
2759                                    chan->chan, chan->freq);
2760
2761                         wpa_s->mlme.channel = chan->chan;
2762                         wpa_s->mlme.freq = chan->freq;
2763                         wpa_s->mlme.phymode = mode->mode;
2764                         if (ieee80211_sta_set_channel(wpa_s, mode->mode,
2765                                                       chan->chan, chan->freq))
2766                         {
2767                                 wpa_printf(MSG_DEBUG, "MLME: failed to set "
2768                                            "channel %d (%d MHz) for scan",
2769                                            chan->chan, chan->freq);
2770                                 skip = 1;
2771                         }
2772                 }
2773
2774                 wpa_s->mlme.scan_channel_idx++;
2775                 if (wpa_s->mlme.scan_channel_idx >=
2776                     wpa_s->mlme.modes[wpa_s->mlme.scan_hw_mode_idx].
2777                     num_channels) {
2778                         wpa_s->mlme.scan_hw_mode_idx++;
2779                         wpa_s->mlme.scan_channel_idx = 0;
2780                 }
2781
2782                 if (skip) {
2783                         timeout = 0;
2784                         break;
2785                 }
2786
2787                 timeout = IEEE80211_PROBE_DELAY;
2788                 wpa_s->mlme.scan_state = SCAN_SEND_PROBE;
2789                 break;
2790         case SCAN_SEND_PROBE:
2791                 if (ieee80211_active_scan(wpa_s)) {
2792                         ieee80211_send_probe_req(wpa_s, NULL,
2793                                                  wpa_s->mlme.scan_ssid,
2794                                                  wpa_s->mlme.scan_ssid_len);
2795                         timeout = IEEE80211_CHANNEL_TIME;
2796                 } else {
2797                         timeout = IEEE80211_PASSIVE_CHANNEL_TIME;
2798                 }
2799                 wpa_s->mlme.scan_state = SCAN_SET_CHANNEL;
2800                 break;
2801         }
2802
2803         eloop_register_timeout(timeout / 1000, 1000 * (timeout % 1000),
2804                                ieee80211_sta_scan_timer, wpa_s, NULL);
2805 }
2806
2807
2808 int ieee80211_sta_req_scan(struct wpa_supplicant *wpa_s,
2809                            struct wpa_driver_scan_params *params)
2810 {
2811         const u8 *ssid = params->ssids[0].ssid;
2812         size_t ssid_len = params->ssids[0].ssid_len;
2813
2814         if (ssid_len > MAX_SSID_LEN)
2815                 return -1;
2816
2817         /* MLME-SCAN.request (page 118)  page 144 (11.1.3.1)
2818          * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS
2819          * BSSID: MACAddress
2820          * SSID
2821          * ScanType: ACTIVE, PASSIVE
2822          * ProbeDelay: delay (in microseconds) to be used prior to transmitting
2823          *    a Probe frame during active scanning
2824          * ChannelList
2825          * MinChannelTime (>= ProbeDelay), in TU
2826          * MaxChannelTime: (>= MinChannelTime), in TU
2827          */
2828
2829          /* MLME-SCAN.confirm
2830           * BSSDescriptionSet
2831           * ResultCode: SUCCESS, INVALID_PARAMETERS
2832          */
2833
2834         /* TODO: if assoc, move to power save mode for the duration of the
2835          * scan */
2836
2837         if (wpa_s->mlme.sta_scanning)
2838                 return -1;
2839
2840         wpa_printf(MSG_DEBUG, "MLME: starting scan");
2841
2842         ieee80211_sta_set_probe_req_ie(wpa_s, params->extra_ies,
2843                                        params->extra_ies_len);
2844
2845         os_free(wpa_s->mlme.scan_freqs);
2846         if (params->freqs) {
2847                 int i;
2848                 for (i = 0; params->freqs[i]; i++)
2849                         ;
2850                 wpa_s->mlme.scan_freqs = os_malloc((i + 1) * sizeof(int));
2851                 if (wpa_s->mlme.scan_freqs)
2852                         os_memcpy(wpa_s->mlme.scan_freqs, params->freqs,
2853                                   (i + 1) * sizeof(int));
2854         } else
2855                 wpa_s->mlme.scan_freqs = NULL;
2856
2857         ieee80211_sta_save_oper_chan(wpa_s);
2858
2859         wpa_s->mlme.sta_scanning = 1;
2860         /* TODO: stop TX queue? */
2861
2862         if (ssid) {
2863                 wpa_s->mlme.scan_ssid_len = ssid_len;
2864                 os_memcpy(wpa_s->mlme.scan_ssid, ssid, ssid_len);
2865         } else
2866                 wpa_s->mlme.scan_ssid_len = 0;
2867         wpa_s->mlme.scan_skip_11b = 1; /* FIX: clear this is 11g is not
2868                                         * supported */
2869         wpa_s->mlme.scan_state = SCAN_SET_CHANNEL;
2870         wpa_s->mlme.scan_hw_mode_idx = 0;
2871         wpa_s->mlme.scan_channel_idx = 0;
2872         eloop_register_timeout(0, 1, ieee80211_sta_scan_timer, wpa_s, NULL);
2873
2874         return 0;
2875 }
2876
2877
2878 struct wpa_scan_results *
2879 ieee80211_sta_get_scan_results(struct wpa_supplicant *wpa_s)
2880 {
2881         size_t ap_num = 0;
2882         struct wpa_scan_results *res;
2883         struct wpa_scan_res *r;
2884         struct ieee80211_sta_bss *bss;
2885
2886         res = os_zalloc(sizeof(*res));
2887         for (bss = wpa_s->mlme.sta_bss_list; bss; bss = bss->next)
2888                 ap_num++;
2889         res->res = os_zalloc(ap_num * sizeof(struct wpa_scan_res *));
2890         if (res->res == NULL) {
2891                 os_free(res);
2892                 return NULL;
2893         }
2894
2895         for (bss = wpa_s->mlme.sta_bss_list; bss; bss = bss->next) {
2896                 r = os_zalloc(sizeof(*r) + bss->ie_len);
2897                 if (r == NULL)
2898                         break;
2899                 os_memcpy(r->bssid, bss->bssid, ETH_ALEN);
2900                 r->freq = bss->freq;
2901                 r->beacon_int = bss->beacon_int;
2902                 r->caps = bss->capability;
2903                 r->level = bss->rssi;
2904                 r->tsf = bss->timestamp;
2905                 if (bss->ie) {
2906                         r->ie_len = bss->ie_len;
2907                         os_memcpy(r + 1, bss->ie, bss->ie_len);
2908                 }
2909
2910                 res->res[res->num++] = r;
2911         }
2912
2913         return res;
2914 }
2915
2916
2917 #if 0 /* FIX */
2918 struct sta_info * ieee80211_ibss_add_sta(struct wpa_supplicant *wpa_s,
2919                                          struct sk_buff *skb, u8 *bssid,
2920                                          u8 *addr)
2921 {
2922         struct ieee80211_local *local = dev->priv;
2923         struct list_head *ptr;
2924         struct sta_info *sta;
2925         struct wpa_supplicant *sta_dev = NULL;
2926
2927         /* TODO: Could consider removing the least recently used entry and
2928          * allow new one to be added. */
2929         if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) {
2930                 if (net_ratelimit()) {
2931                         wpa_printf(MSG_DEBUG, "MLME: No room for a new IBSS "
2932                                    "STA entry " MACSTR, MAC2STR(addr));
2933                 }
2934                 return NULL;
2935         }
2936
2937         spin_lock_bh(&local->sub_if_lock);
2938         list_for_each(ptr, &local->sub_if_list) {
2939                 sdata = list_entry(ptr, struct ieee80211_sub_if_data, list);
2940                 if (sdata->type == IEEE80211_SUB_IF_TYPE_STA &&
2941                     os_memcmp(bssid, sdata->u.sta.bssid, ETH_ALEN) == 0) {
2942                         sta_dev = sdata->dev;
2943                         break;
2944                 }
2945         }
2946         spin_unlock_bh(&local->sub_if_lock);
2947
2948         if (sta_dev == NULL)
2949                 return NULL;
2950
2951         wpa_printf(MSG_DEBUG, "MLME: Adding new IBSS station " MACSTR
2952                    " (dev=%s)", MAC2STR(addr), sta_dev->name);
2953
2954         sta = sta_info_add(wpa_s, addr);
2955         if (sta == NULL) {
2956                 return NULL;
2957         }
2958
2959         sta->dev = sta_dev;
2960         sta->supp_rates = wpa_s->mlme.supp_rates_bits;
2961
2962         rate_control_rate_init(local, sta);
2963
2964         return sta; /* caller will call sta_info_release() */
2965 }
2966 #endif
2967
2968
2969 int ieee80211_sta_deauthenticate(struct wpa_supplicant *wpa_s, u16 reason)
2970 {
2971         wpa_printf(MSG_DEBUG, "MLME: deauthenticate(reason=%d)", reason);
2972
2973         ieee80211_send_deauth(wpa_s, reason);
2974         ieee80211_set_associated(wpa_s, 0);
2975         return 0;
2976 }
2977
2978
2979 int ieee80211_sta_disassociate(struct wpa_supplicant *wpa_s, u16 reason)
2980 {
2981         wpa_printf(MSG_DEBUG, "MLME: disassociate(reason=%d)", reason);
2982
2983         if (!wpa_s->mlme.associated)
2984                 return -1;
2985
2986         ieee80211_send_disassoc(wpa_s, reason);
2987         ieee80211_set_associated(wpa_s, 0);
2988         return 0;
2989 }
2990
2991
2992 void ieee80211_sta_rx(struct wpa_supplicant *wpa_s, const u8 *buf, size_t len,
2993                       struct ieee80211_rx_status *rx_status)
2994 {
2995         struct ieee80211_mgmt *mgmt;
2996         u16 fc;
2997         const u8 *pos;
2998
2999         /* wpa_hexdump(MSG_MSGDUMP, "MLME: Received frame", buf, len); */
3000
3001         if (wpa_s->mlme.sta_scanning) {
3002                 ieee80211_sta_rx_scan(wpa_s, buf, len, rx_status);
3003                 return;
3004         }
3005
3006         if (len < 24)
3007                 return;
3008
3009         mgmt = (struct ieee80211_mgmt *) buf;
3010         fc = le_to_host16(mgmt->frame_control);
3011
3012         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT)
3013                 ieee80211_sta_rx_mgmt(wpa_s, buf, len, rx_status);
3014         else if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_DATA) {
3015                 if ((fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) !=
3016                     WLAN_FC_FROMDS)
3017                         return;
3018                 /* mgmt->sa is actually BSSID for FromDS data frames */
3019                 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) != 0)
3020                         return;
3021                 /* Skip IEEE 802.11 and LLC headers */
3022                 pos = buf + 24 + 6;
3023                 if (WPA_GET_BE16(pos) != ETH_P_EAPOL)
3024                         return;
3025                 pos += 2;
3026                 /* mgmt->bssid is actually BSSID for SA data frames */
3027                 wpa_supplicant_rx_eapol(wpa_s, mgmt->bssid,
3028                                         pos, buf + len - pos);
3029         }
3030 }
3031
3032
3033 void ieee80211_sta_free_hw_features(struct hostapd_hw_modes *hw_features,
3034                                     size_t num_hw_features)
3035 {
3036         size_t i;
3037
3038         if (hw_features == NULL)
3039                 return;
3040
3041         for (i = 0; i < num_hw_features; i++) {
3042                 os_free(hw_features[i].channels);
3043                 os_free(hw_features[i].rates);
3044         }
3045
3046         os_free(hw_features);
3047 }
3048
3049
3050 int ieee80211_sta_init(struct wpa_supplicant *wpa_s)
3051 {
3052         u16 num_modes, flags;
3053
3054         wpa_s->mlme.modes = wpa_drv_get_hw_feature_data(wpa_s, &num_modes,
3055                                                         &flags);
3056         if (wpa_s->mlme.modes == NULL) {
3057                 wpa_printf(MSG_ERROR, "MLME: Failed to read supported "
3058                            "channels and rates from the driver");
3059                 return -1;
3060         }
3061
3062         wpa_s->mlme.num_modes = num_modes;
3063
3064         wpa_s->mlme.hw_modes = 1 << HOSTAPD_MODE_IEEE80211A;
3065         wpa_s->mlme.hw_modes |= 1 << HOSTAPD_MODE_IEEE80211B;
3066         wpa_s->mlme.hw_modes |= 1 << HOSTAPD_MODE_IEEE80211G;
3067
3068         wpa_s->mlme.wmm_enabled = 1;
3069
3070         return 0;
3071 }
3072
3073
3074 void ieee80211_sta_deinit(struct wpa_supplicant *wpa_s)
3075 {
3076         eloop_cancel_timeout(ieee80211_sta_timer, wpa_s, NULL);
3077         eloop_cancel_timeout(ieee80211_sta_scan_timer, wpa_s, NULL);
3078         os_free(wpa_s->mlme.extra_ie);
3079         wpa_s->mlme.extra_ie = NULL;
3080         os_free(wpa_s->mlme.extra_probe_ie);
3081         wpa_s->mlme.extra_probe_ie = NULL;
3082         os_free(wpa_s->mlme.assocreq_ies);
3083         wpa_s->mlme.assocreq_ies = NULL;
3084         os_free(wpa_s->mlme.assocresp_ies);
3085         wpa_s->mlme.assocresp_ies = NULL;
3086         ieee80211_bss_list_deinit(wpa_s);
3087         ieee80211_sta_free_hw_features(wpa_s->mlme.modes,
3088                                        wpa_s->mlme.num_modes);
3089 #ifdef CONFIG_IEEE80211R
3090         os_free(wpa_s->mlme.ft_ies);
3091         wpa_s->mlme.ft_ies = NULL;
3092         wpa_s->mlme.ft_ies_len = 0;
3093 #endif /* CONFIG_IEEE80211R */
3094
3095         os_free(wpa_s->mlme.scan_freqs);
3096         wpa_s->mlme.scan_freqs = NULL;
3097 }
3098
3099
3100 #ifdef CONFIG_IEEE80211R
3101
3102 int ieee80211_sta_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
3103                                 const u8 *ies, size_t ies_len)
3104 {
3105         if (md == NULL) {
3106                 wpa_printf(MSG_DEBUG, "MLME: Clear FT mobility domain");
3107                 os_memset(wpa_s->mlme.current_md, 0, MOBILITY_DOMAIN_ID_LEN);
3108         } else {
3109                 wpa_printf(MSG_DEBUG, "MLME: Update FT IEs for MD " MACSTR,
3110                            MAC2STR(md));
3111                 os_memcpy(wpa_s->mlme.current_md, md, MOBILITY_DOMAIN_ID_LEN);
3112         }
3113
3114         wpa_hexdump(MSG_DEBUG, "MLME: FT IEs", ies, ies_len);
3115         os_free(wpa_s->mlme.ft_ies);
3116         wpa_s->mlme.ft_ies = os_malloc(ies_len);
3117         if (wpa_s->mlme.ft_ies == NULL)
3118                 return -1;
3119         os_memcpy(wpa_s->mlme.ft_ies, ies, ies_len);
3120         wpa_s->mlme.ft_ies_len = ies_len;
3121
3122         return 0;
3123 }
3124
3125
3126 int ieee80211_sta_send_ft_action(struct wpa_supplicant *wpa_s, u8 action,
3127                                  const u8 *target_ap,
3128                                  const u8 *ies, size_t ies_len)
3129 {
3130         u8 *buf;
3131         size_t len;
3132         struct ieee80211_mgmt *mgmt;
3133         int res;
3134
3135         /*
3136          * Action frame payload:
3137          * Category[1] = 6 (Fast BSS Transition)
3138          * Action[1] = 1 (Fast BSS Transition Request)
3139          * STA Address
3140          * Target AP Address
3141          * FT IEs
3142          */
3143
3144         buf = os_zalloc(sizeof(*mgmt) + ies_len);
3145         if (buf == NULL) {
3146                 wpa_printf(MSG_DEBUG, "MLME: Failed to allocate buffer for "
3147                            "FT action frame");
3148                 return -1;
3149         }
3150
3151         mgmt = (struct ieee80211_mgmt *) buf;
3152         len = 24;
3153         os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
3154         os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
3155         os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
3156         mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
3157                                            WLAN_FC_STYPE_ACTION);
3158         mgmt->u.action.category = WLAN_ACTION_FT;
3159         mgmt->u.action.u.ft_action_req.action = action;
3160         os_memcpy(mgmt->u.action.u.ft_action_req.sta_addr, wpa_s->own_addr,
3161                   ETH_ALEN);
3162         os_memcpy(mgmt->u.action.u.ft_action_req.target_ap_addr, target_ap,
3163                   ETH_ALEN);
3164         os_memcpy(mgmt->u.action.u.ft_action_req.variable, ies, ies_len);
3165         len += 1 + sizeof(mgmt->u.action.u.ft_action_req) + ies_len;
3166
3167         wpa_printf(MSG_DEBUG, "MLME: Send FT Action Frame: Action=%d "
3168                    "Target AP=" MACSTR " body_len=%lu",
3169                    action, MAC2STR(target_ap), (unsigned long) ies_len);
3170
3171         res = ieee80211_sta_tx(wpa_s, buf, len);
3172         os_free(buf);
3173
3174         return res;
3175 }
3176
3177 #endif /* CONFIG_IEEE80211R */
3178
3179
3180 static int ieee80211_sta_set_probe_req_ie(struct wpa_supplicant *wpa_s,
3181                                           const u8 *ies, size_t ies_len)
3182 {
3183         os_free(wpa_s->mlme.extra_probe_ie);
3184         wpa_s->mlme.extra_probe_ie = NULL;
3185         wpa_s->mlme.extra_probe_ie_len = 0;
3186
3187         if (ies == NULL)
3188                 return 0;
3189
3190         wpa_s->mlme.extra_probe_ie = os_malloc(ies_len);
3191         if (wpa_s->mlme.extra_probe_ie == NULL)
3192                 return -1;
3193
3194         os_memcpy(wpa_s->mlme.extra_probe_ie, ies, ies_len);
3195         wpa_s->mlme.extra_probe_ie_len = ies_len;
3196
3197         return 0;
3198 }