wpa_supplicant/sme.c

   1 /*
   2  * wpa_supplicant - SME
   3  * Copyright (c) 2009-2010, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  */
  14
  15 #include "includes.h"
  16
  17 #include "common.h"
  18 #include "common/ieee802_11_defs.h"
  19 #include "common/ieee802_11_common.h"
  20 #include "eapol_supp/eapol_supp_sm.h"
  21 #include "common/wpa_common.h"
  22 #include "rsn_supp/wpa.h"
  23 #include "rsn_supp/pmksa_cache.h"
  24 #include "config.h"
  25 #include "wpa_supplicant_i.h"
  26 #include "driver_i.h"
  27 #include "wpas_glue.h"
  28 #include "wps_supplicant.h"
  29 #include "p2p_supplicant.h"
  30 #include "notify.h"
  31 #include "blacklist.h"
  32 #include "bss.h"
  33 #include "scan.h"
  34 #include "sme.h"
  35
  36 static void add_freq(int *freqs, int *num_freqs, int freq)
  37 {
  38         int i;
  39
  40         for (i = 0; i < *num_freqs; i++) {
  41                 if (freqs[i] == freq)
  42                         return;
  43         }
  44
  45         freqs[*num_freqs] = freq;
  46         (*num_freqs)++;
  47 }
  48
  49
  50 static int * sme_another_bss_in_ess(struct wpa_supplicant *wpa_s)
  51 {
  52         struct wpa_bss *bss, *cbss;
  53         const int max_freqs = 10;
  54         int *freqs;
  55         int num_freqs = 0;
  56
  57         freqs = os_zalloc(sizeof(int) * (max_freqs + 1));
  58         if (freqs == NULL)
  59                 return NULL;
  60
  61         cbss = wpa_s->current_bss;
  62
  63         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
  64                 if (bss == cbss)
  65                         continue;
  66                 if (bss->ssid_len == cbss->ssid_len &&
  67                     os_memcmp(bss->ssid, cbss->ssid, bss->ssid_len) == 0 &&
  68                     wpa_blacklist_get(wpa_s, bss->bssid) == NULL) {
  69                         add_freq(freqs, &num_freqs, bss->freq);
  70                         if (num_freqs == max_freqs)
  71                                 break;
  72                 }
  73         }
  74
  75         if (num_freqs == 0) {
  76                 os_free(freqs);
  77                 freqs = NULL;
  78         }
  79
  80         return freqs;
  81 }
  82
  83
  84 static void sme_connection_failed(struct wpa_supplicant *wpa_s,
  85                                   const u8 *bssid)
  86 {
  87         int timeout;
  88         int count;
  89         int *freqs = NULL;
  90
  91         /*
  92          * Add the failed BSSID into the blacklist and speed up next scan
  93          * attempt if there could be other APs that could accept association.
  94          * The current blacklist count indicates how many times we have tried
  95          * connecting to this AP and multiple attempts mean that other APs are
  96          * either not available or has already been tried, so that we can start
  97          * increasing the delay here to avoid constant scanning.
  98          */
  99         count = wpa_blacklist_add(wpa_s, bssid);
 100         if (count == 1 && wpa_s->current_bss) {
 101                 /*
 102                  * This BSS was not in the blacklist before. If there is
 103                  * another BSS available for the same ESS, we should try that
 104                  * next. Otherwise, we may as well try this one once more
 105                  * before allowing other, likely worse, ESSes to be considered.
 106                  */
 107                 freqs = sme_another_bss_in_ess(wpa_s);
 108                 if (freqs) {
 109                         wpa_printf(MSG_DEBUG, "SME: Another BSS in this ESS "
 110                                    "has been seen; try it next");
 111                         wpa_blacklist_add(wpa_s, bssid);
 112                         /*
 113                          * On the next scan, go through only the known channels
 114                          * used in this ESS based on previous scans to speed up
 115                          * common load balancing use case.
 116                          */
 117                         os_free(wpa_s->next_scan_freqs);
 118                         wpa_s->next_scan_freqs = freqs;
 119                 }
 120         }
 121
 122         switch (count) {
 123         case 1:
 124                 timeout = 100;
 125                 break;
 126         case 2:
 127                 timeout = 500;
 128                 break;
 129         case 3:
 130                 timeout = 1000;
 131                 break;
 132         default:
 133                 timeout = 5000;
 134         }
 135
 136         /*
 137          * TODO: if more than one possible AP is available in scan results,
 138          * could try the other ones before requesting a new scan.
 139          */
 140         wpa_supplicant_req_scan(wpa_s, timeout / 1000,
 141                                 1000 * (timeout % 1000));
 142 }
 143
 144
 145 void sme_authenticate(struct wpa_supplicant *wpa_s,
 146                       struct wpa_bss *bss, struct wpa_ssid *ssid)
 147 {
 148         struct wpa_driver_auth_params params;
 149         struct wpa_ssid *old_ssid;
 150 #ifdef CONFIG_IEEE80211R
 151         const u8 *ie;
 152 #endif /* CONFIG_IEEE80211R */
 153 #ifdef CONFIG_IEEE80211R
 154         const u8 *md = NULL;
 155 #endif /* CONFIG_IEEE80211R */
 156         int i, bssid_changed;
 157
 158         if (bss == NULL) {
 159                 wpa_printf(MSG_ERROR, "SME: No scan result available for the "
 160                            "network");
 161                 return;
 162         }
 163
 164         wpa_s->current_bss = bss;
 165
 166         os_memset(&params, 0, sizeof(params));
 167         wpa_s->reassociate = 0;
 168
 169         params.freq = bss->freq;
 170         params.bssid = bss->bssid;
 171         params.ssid = bss->ssid;
 172         params.ssid_len = bss->ssid_len;
 173
 174         if (wpa_s->sme.ssid_len != params.ssid_len ||
 175             os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0)
 176                 wpa_s->sme.prev_bssid_set = 0;
 177
 178         wpa_s->sme.freq = params.freq;
 179         os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len);
 180         wpa_s->sme.ssid_len = params.ssid_len;
 181
 182         params.auth_alg = WPA_AUTH_ALG_OPEN;
 183 #ifdef IEEE8021X_EAPOL
 184         if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
 185                 if (ssid->leap) {
 186                         if (ssid->non_leap == 0)
 187                                 params.auth_alg = WPA_AUTH_ALG_LEAP;
 188                         else
 189                                 params.auth_alg |= WPA_AUTH_ALG_LEAP;
 190                 }
 191         }
 192 #endif /* IEEE8021X_EAPOL */
 193         wpa_printf(MSG_DEBUG, "Automatic auth_alg selection: 0x%x",
 194                    params.auth_alg);
 195         if (ssid->auth_alg) {
 196                 params.auth_alg = ssid->auth_alg;
 197                 wpa_printf(MSG_DEBUG, "Overriding auth_alg selection: 0x%x",
 198                            params.auth_alg);
 199         }
 200
 201         for (i = 0; i < NUM_WEP_KEYS; i++) {
 202                 if (ssid->wep_key_len[i])
 203                         params.wep_key[i] = ssid->wep_key[i];
 204                 params.wep_key_len[i] = ssid->wep_key_len[i];
 205         }
 206         params.wep_tx_keyidx = ssid->wep_tx_keyidx;
 207
 208         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 209         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 210         os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
 211         if (bssid_changed)
 212                 wpas_notify_bssid_changed(wpa_s);
 213
 214         if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
 215              wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
 216             (ssid->key_mgmt & (WPA_KEY_MGMT_IEEE8021X | WPA_KEY_MGMT_PSK |
 217                                WPA_KEY_MGMT_FT_IEEE8021X |
 218                                WPA_KEY_MGMT_FT_PSK |
 219                                WPA_KEY_MGMT_IEEE8021X_SHA256 |
 220                                WPA_KEY_MGMT_PSK_SHA256))) {
 221                 int try_opportunistic;
 222                 try_opportunistic = ssid->proactive_key_caching &&
 223                         (ssid->proto & WPA_PROTO_RSN);
 224                 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
 225                                             wpa_s->current_ssid,
 226                                             try_opportunistic) == 0)
 227                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
 228                 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
 229                 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
 230                                               wpa_s->sme.assoc_req_ie,
 231                                               &wpa_s->sme.assoc_req_ie_len)) {
 232                         wpa_printf(MSG_WARNING, "SME: Failed to set WPA key "
 233                                    "management and encryption suites");
 234                         return;
 235                 }
 236         } else if (ssid->key_mgmt &
 237                    (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X |
 238                     WPA_KEY_MGMT_WPA_NONE | WPA_KEY_MGMT_FT_PSK |
 239                     WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_PSK_SHA256 |
 240                     WPA_KEY_MGMT_IEEE8021X_SHA256)) {
 241                 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
 242                 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
 243                                               wpa_s->sme.assoc_req_ie,
 244                                               &wpa_s->sme.assoc_req_ie_len)) {
 245                         wpa_printf(MSG_WARNING, "SME: Failed to set WPA key "
 246                                    "management and encryption suites (no scan "
 247                                    "results)");
 248                         return;
 249                 }
 250 #ifdef CONFIG_WPS
 251         } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 252                 struct wpabuf *wps_ie;
 253                 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
 254                 if (wps_ie && wpabuf_len(wps_ie) <=
 255                     sizeof(wpa_s->sme.assoc_req_ie)) {
 256                         wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie);
 257                         os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie),
 258                                   wpa_s->sme.assoc_req_ie_len);
 259                 } else
 260                         wpa_s->sme.assoc_req_ie_len = 0;
 261                 wpabuf_free(wps_ie);
 262                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
 263 #endif /* CONFIG_WPS */
 264         } else {
 265                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
 266                 wpa_s->sme.assoc_req_ie_len = 0;
 267         }
 268
 269 #ifdef CONFIG_IEEE80211R
 270         ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
 271         if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
 272                 md = ie + 2;
 273         wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
 274         if (md) {
 275                 /* Prepare for the next transition */
 276                 wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
 277         }
 278
 279         if (md && ssid->key_mgmt & (WPA_KEY_MGMT_FT_PSK |
 280                                     WPA_KEY_MGMT_FT_IEEE8021X)) {
 281                 if (wpa_s->sme.assoc_req_ie_len + 5 <
 282                     sizeof(wpa_s->sme.assoc_req_ie)) {
 283                         struct rsn_mdie *mdie;
 284                         u8 *pos = wpa_s->sme.assoc_req_ie +
 285                                 wpa_s->sme.assoc_req_ie_len;
 286                         *pos++ = WLAN_EID_MOBILITY_DOMAIN;
 287                         *pos++ = sizeof(*mdie);
 288                         mdie = (struct rsn_mdie *) pos;
 289                         os_memcpy(mdie->mobility_domain, md,
 290                                   MOBILITY_DOMAIN_ID_LEN);
 291                         mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN];
 292                         wpa_s->sme.assoc_req_ie_len += 5;
 293                 }
 294
 295                 if (wpa_s->sme.ft_used &&
 296                     os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 &&
 297                     wpa_sm_has_ptk(wpa_s->wpa)) {
 298                         wpa_printf(MSG_DEBUG, "SME: Trying to use FT "
 299                                    "over-the-air");
 300                         params.auth_alg = WPA_AUTH_ALG_FT;
 301                         params.ie = wpa_s->sme.ft_ies;
 302                         params.ie_len = wpa_s->sme.ft_ies_len;
 303                 }
 304         }
 305 #endif /* CONFIG_IEEE80211R */
 306
 307 #ifdef CONFIG_IEEE80211W
 308         wpa_s->sme.mfp = ssid->ieee80211w;
 309         if (ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION) {
 310                 const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 311                 struct wpa_ie_data _ie;
 312                 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 &&
 313                     _ie.capabilities &
 314                     (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
 315                         wpa_printf(MSG_DEBUG, "WPA: Selected AP supports MFP: "
 316                                    "require MFP");
 317                         wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED;
 318                 }
 319         }
 320 #endif /* CONFIG_IEEE80211W */
 321
 322 #ifdef CONFIG_P2P
 323         if (wpa_s->global->p2p) {
 324                 u8 *pos;
 325                 size_t len;
 326                 int res;
 327                 int p2p_group;
 328                 p2p_group = wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE;
 329                 pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
 330                 len = sizeof(wpa_s->sme.assoc_req_ie) -
 331                         wpa_s->sme.assoc_req_ie_len;
 332                 res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len, p2p_group);
 333                 if (res >= 0)
 334                         wpa_s->sme.assoc_req_ie_len += res;
 335         }
 336 #endif /* CONFIG_P2P */
 337
 338         wpa_supplicant_cancel_scan(wpa_s);
 339
 340         wpa_msg(wpa_s, MSG_INFO, "Trying to authenticate with " MACSTR
 341                 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
 342                 wpa_ssid_txt(params.ssid, params.ssid_len), params.freq);
 343
 344         wpa_clear_keys(wpa_s, bss->bssid);
 345         wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
 346         old_ssid = wpa_s->current_ssid;
 347         wpa_s->current_ssid = ssid;
 348         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
 349         wpa_supplicant_initiate_eapol(wpa_s);
 350         if (old_ssid != wpa_s->current_ssid)
 351                 wpas_notify_network_changed(wpa_s);
 352
 353         wpa_s->sme.auth_alg = params.auth_alg;
 354         if (wpa_drv_authenticate(wpa_s, &params) < 0) {
 355                 wpa_msg(wpa_s, MSG_INFO, "Authentication request to the "
 356                         "driver failed");
 357                 wpa_supplicant_req_scan(wpa_s, 1, 0);
 358                 return;
 359         }
 360
 361         /* TODO: add timeout on authentication */
 362
 363         /*
 364          * Association will be started based on the authentication event from
 365          * the driver.
 366          */
 367 }
 368
 369
 370 void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
 371 {
 372         struct wpa_ssid *ssid = wpa_s->current_ssid;
 373
 374         if (ssid == NULL) {
 375                 wpa_printf(MSG_DEBUG, "SME: Ignore authentication event when "
 376                            "network is not selected");
 377                 return;
 378         }
 379
 380         if (wpa_s->wpa_state != WPA_AUTHENTICATING) {
 381                 wpa_printf(MSG_DEBUG, "SME: Ignore authentication event when "
 382                            "not in authenticating state");
 383                 return;
 384         }
 385
 386         if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) {
 387                 wpa_printf(MSG_DEBUG, "SME: Ignore authentication with "
 388                            "unexpected peer " MACSTR,
 389                            MAC2STR(data->auth.peer));
 390                 return;
 391         }
 392
 393         wpa_printf(MSG_DEBUG, "SME: Authentication response: peer=" MACSTR
 394                    " auth_type=%d status_code=%d",
 395                    MAC2STR(data->auth.peer), data->auth.auth_type,
 396                    data->auth.status_code);
 397         wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs",
 398                     data->auth.ies, data->auth.ies_len);
 399
 400         if (data->auth.status_code != WLAN_STATUS_SUCCESS) {
 401                 wpa_printf(MSG_DEBUG, "SME: Authentication failed (status "
 402                            "code %d)", data->auth.status_code);
 403
 404                 if (data->auth.status_code !=
 405                     WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG ||
 406                     wpa_s->sme.auth_alg == data->auth.auth_type ||
 407                     wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) {
 408                         sme_connection_failed(wpa_s, wpa_s->pending_bssid);
 409                         return;
 410                 }
 411
 412                 switch (data->auth.auth_type) {
 413                 case WLAN_AUTH_OPEN:
 414                         wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED;
 415
 416                         wpa_printf(MSG_DEBUG, "SME: Trying SHARED auth");
 417                         wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
 418                                                  wpa_s->current_ssid);
 419                         return;
 420
 421                 case WLAN_AUTH_SHARED_KEY:
 422                         wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP;
 423
 424                         wpa_printf(MSG_DEBUG, "SME: Trying LEAP auth");
 425                         wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
 426                                                  wpa_s->current_ssid);
 427                         return;
 428
 429                 default:
 430                         return;
 431                 }
 432         }
 433
 434 #ifdef CONFIG_IEEE80211R
 435         if (data->auth.auth_type == WLAN_AUTH_FT) {
 436                 union wpa_event_data edata;
 437                 os_memset(&edata, 0, sizeof(edata));
 438                 edata.ft_ies.ies = data->auth.ies;
 439                 edata.ft_ies.ies_len = data->auth.ies_len;
 440                 os_memcpy(edata.ft_ies.target_ap, data->auth.peer, ETH_ALEN);
 441                 wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &edata);
 442         }
 443 #endif /* CONFIG_IEEE80211R */
 444
 445         sme_associate(wpa_s, ssid->mode, data->auth.peer,
 446                       data->auth.auth_type);
 447 }
 448
 449
 450 void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
 451                    const u8 *bssid, u16 auth_type)
 452 {
 453         struct wpa_driver_associate_params params;
 454         struct ieee802_11_elems elems;
 455
 456         os_memset(&params, 0, sizeof(params));
 457         params.bssid = bssid;
 458         params.ssid = wpa_s->sme.ssid;
 459         params.ssid_len = wpa_s->sme.ssid_len;
 460         params.freq = wpa_s->sme.freq;
 461         params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
 462                 wpa_s->sme.assoc_req_ie : NULL;
 463         params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
 464 #ifdef CONFIG_IEEE80211R
 465         if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
 466                 params.wpa_ie = wpa_s->sme.ft_ies;
 467                 params.wpa_ie_len = wpa_s->sme.ft_ies_len;
 468         }
 469 #endif /* CONFIG_IEEE80211R */
 470         params.mode = mode;
 471         params.mgmt_frame_protection = wpa_s->sme.mfp;
 472         if (wpa_s->sme.prev_bssid_set)
 473                 params.prev_bssid = wpa_s->sme.prev_bssid;
 474
 475         wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
 476                 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
 477                 params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "",
 478                 params.freq);
 479
 480         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
 481
 482         if (params.wpa_ie == NULL ||
 483             ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0)
 484             < 0) {
 485                 wpa_printf(MSG_DEBUG, "SME: Could not parse own IEs?!");
 486                 os_memset(&elems, 0, sizeof(elems));
 487         }
 488         if (elems.rsn_ie)
 489                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2,
 490                                         elems.rsn_ie_len + 2);
 491         else if (elems.wpa_ie)
 492                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
 493                                         elems.wpa_ie_len + 2);
 494         else
 495                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
 496         if (elems.p2p &&
 497             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
 498                 params.p2p = 1;
 499
 500         if (wpa_s->parent->set_sta_uapsd)
 501                 params.uapsd = wpa_s->parent->sta_uapsd;
 502         else
 503                 params.uapsd = -1;
 504
 505         if (wpa_drv_associate(wpa_s, &params) < 0) {
 506                 wpa_msg(wpa_s, MSG_INFO, "Association request to the driver "
 507                         "failed");
 508                 wpa_supplicant_req_scan(wpa_s, 5, 0);
 509                 return;
 510         }
 511
 512         /* TODO: add timeout on association */
 513 }
 514
 515
 516 int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
 517                       const u8 *ies, size_t ies_len)
 518 {
 519         if (md == NULL || ies == NULL) {
 520                 wpa_printf(MSG_DEBUG, "SME: Remove mobility domain");
 521                 os_free(wpa_s->sme.ft_ies);
 522                 wpa_s->sme.ft_ies = NULL;
 523                 wpa_s->sme.ft_ies_len = 0;
 524                 wpa_s->sme.ft_used = 0;
 525                 return 0;
 526         }
 527
 528         os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN);
 529         wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len);
 530         os_free(wpa_s->sme.ft_ies);
 531         wpa_s->sme.ft_ies = os_malloc(ies_len);
 532         if (wpa_s->sme.ft_ies == NULL)
 533                 return -1;
 534         os_memcpy(wpa_s->sme.ft_ies, ies, ies_len);
 535         wpa_s->sme.ft_ies_len = ies_len;
 536         return 0;
 537 }
 538
 539
 540 void sme_event_assoc_reject(struct wpa_supplicant *wpa_s,
 541                             union wpa_event_data *data)
 542 {
 543         int bssid_changed;
 544
 545         wpa_printf(MSG_DEBUG, "SME: Association with " MACSTR " failed: "
 546                    "status code %d", MAC2STR(wpa_s->pending_bssid),
 547                    data->assoc_reject.status_code);
 548
 549         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 550
 551         /*
 552          * For now, unconditionally terminate the previous authentication. In
 553          * theory, this should not be needed, but mac80211 gets quite confused
 554          * if the authentication is left pending.. Some roaming cases might
 555          * benefit from using the previous authentication, so this could be
 556          * optimized in the future.
 557          */
 558         if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
 559                                    WLAN_REASON_DEAUTH_LEAVING) < 0) {
 560                 wpa_msg(wpa_s, MSG_INFO,
 561                         "Deauth request to the driver failed");
 562         }
 563         wpa_s->sme.prev_bssid_set = 0;
 564
 565         sme_connection_failed(wpa_s, wpa_s->pending_bssid);
 566         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 567         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 568         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 569         if (bssid_changed)
 570                 wpas_notify_bssid_changed(wpa_s);
 571 }
 572
 573
 574 void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s,
 575                               union wpa_event_data *data)
 576 {
 577         wpa_printf(MSG_DEBUG, "SME: Authentication timed out");
 578         sme_connection_failed(wpa_s, wpa_s->pending_bssid);
 579 }
 580
 581
 582 void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s,
 583                                union wpa_event_data *data)
 584 {
 585         wpa_printf(MSG_DEBUG, "SME: Association timed out");
 586         sme_connection_failed(wpa_s, wpa_s->pending_bssid);
 587         wpa_supplicant_mark_disassoc(wpa_s);
 588 }
 589
 590
 591 void sme_event_disassoc(struct wpa_supplicant *wpa_s,
 592                         union wpa_event_data *data)
 593 {
 594         wpa_printf(MSG_DEBUG, "SME: Disassociation event received");
 595         if (wpa_s->sme.prev_bssid_set &&
 596             !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)) {
 597                 /*
 598                  * cfg80211/mac80211 can get into somewhat confused state if
 599                  * the AP only disassociates us and leaves us in authenticated
 600                  * state. For now, force the state to be cleared to avoid
 601                  * confusing errors if we try to associate with the AP again.
 602                  */
 603                 wpa_printf(MSG_DEBUG, "SME: Deauthenticate to clear driver "
 604                            "state");
 605                 wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid,
 606                                        WLAN_REASON_DEAUTH_LEAVING);
 607         }
 608 }