contrib/wpa/wpa_supplicant/events.c

   1 /*
   2  * WPA Supplicant - Driver event processing
   3  * Copyright (c) 2003-2012, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "eapol_supp/eapol_supp_sm.h"
  13 #include "rsn_supp/wpa.h"
  14 #include "eloop.h"
  15 #include "config.h"
  16 #include "l2_packet/l2_packet.h"
  17 #include "wpa_supplicant_i.h"
  18 #include "driver_i.h"
  19 #include "pcsc_funcs.h"
  20 #include "rsn_supp/preauth.h"
  21 #include "rsn_supp/pmksa_cache.h"
  22 #include "common/wpa_ctrl.h"
  23 #include "eap_peer/eap.h"
  24 #include "ap/hostapd.h"
  25 #include "p2p/p2p.h"
  26 #include "wnm_sta.h"
  27 #include "notify.h"
  28 #include "common/ieee802_11_defs.h"
  29 #include "common/ieee802_11_common.h"
  30 #include "crypto/random.h"
  31 #include "blacklist.h"
  32 #include "wpas_glue.h"
  33 #include "wps_supplicant.h"
  34 #include "ibss_rsn.h"
  35 #include "sme.h"
  36 #include "gas_query.h"
  37 #include "p2p_supplicant.h"
  38 #include "bgscan.h"
  39 #include "autoscan.h"
  40 #include "ap.h"
  41 #include "bss.h"
  42 #include "scan.h"
  43 #include "offchannel.h"
  44 #include "interworking.h"
  45
  46
  47 static int wpas_temp_disabled(struct wpa_supplicant *wpa_s,
  48                               struct wpa_ssid *ssid)
  49 {
  50         struct os_time now;
  51
  52         if (ssid == NULL || ssid->disabled_until.sec == 0)
  53                 return 0;
  54
  55         os_get_time(&now);
  56         if (ssid->disabled_until.sec > now.sec)
  57                 return ssid->disabled_until.sec - now.sec;
  58
  59         wpas_clear_temp_disabled(wpa_s, ssid, 0);
  60
  61         return 0;
  62 }
  63
  64
  65 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
  66 {
  67         struct wpa_ssid *ssid, *old_ssid;
  68         int res;
  69
  70         if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid)
  71                 return 0;
  72
  73         wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
  74                 "information");
  75         ssid = wpa_supplicant_get_ssid(wpa_s);
  76         if (ssid == NULL) {
  77                 wpa_msg(wpa_s, MSG_INFO,
  78                         "No network configuration found for the current AP");
  79                 return -1;
  80         }
  81
  82         if (wpas_network_disabled(wpa_s, ssid)) {
  83                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
  84                 return -1;
  85         }
  86
  87         if (disallowed_bssid(wpa_s, wpa_s->bssid) ||
  88             disallowed_ssid(wpa_s, ssid->ssid, ssid->ssid_len)) {
  89                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS is disallowed");
  90                 return -1;
  91         }
  92
  93         res = wpas_temp_disabled(wpa_s, ssid);
  94         if (res > 0) {
  95                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is temporarily "
  96                         "disabled for %d second(s)", res);
  97                 return -1;
  98         }
  99
 100         wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
 101                 "current AP");
 102         if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
 103                 u8 wpa_ie[80];
 104                 size_t wpa_ie_len = sizeof(wpa_ie);
 105                 wpa_supplicant_set_suites(wpa_s, NULL, ssid,
 106                                           wpa_ie, &wpa_ie_len);
 107         } else {
 108                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
 109         }
 110
 111         if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
 112                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
 113         old_ssid = wpa_s->current_ssid;
 114         wpa_s->current_ssid = ssid;
 115         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
 116         wpa_supplicant_initiate_eapol(wpa_s);
 117         if (old_ssid != wpa_s->current_ssid)
 118                 wpas_notify_network_changed(wpa_s);
 119
 120         return 0;
 121 }
 122
 123
 124 void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx)
 125 {
 126         struct wpa_supplicant *wpa_s = eloop_ctx;
 127
 128         if (wpa_s->countermeasures) {
 129                 wpa_s->countermeasures = 0;
 130                 wpa_drv_set_countermeasures(wpa_s, 0);
 131                 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
 132                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 133         }
 134 }
 135
 136
 137 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
 138 {
 139         int bssid_changed;
 140
 141         wnm_bss_keep_alive_deinit(wpa_s);
 142
 143 #ifdef CONFIG_IBSS_RSN
 144         ibss_rsn_deinit(wpa_s->ibss_rsn);
 145         wpa_s->ibss_rsn = NULL;
 146 #endif /* CONFIG_IBSS_RSN */
 147
 148 #ifdef CONFIG_AP
 149         wpa_supplicant_ap_deinit(wpa_s);
 150 #endif /* CONFIG_AP */
 151
 152         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
 153                 return;
 154
 155         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 156         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 157         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 158         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 159 #ifdef CONFIG_SME
 160         wpa_s->sme.prev_bssid_set = 0;
 161 #endif /* CONFIG_SME */
 162 #ifdef CONFIG_P2P
 163         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
 164 #endif /* CONFIG_P2P */
 165         wpa_s->current_bss = NULL;
 166         wpa_s->assoc_freq = 0;
 167 #ifdef CONFIG_IEEE80211R
 168 #ifdef CONFIG_SME
 169         if (wpa_s->sme.ft_ies)
 170                 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
 171 #endif /* CONFIG_SME */
 172 #endif /* CONFIG_IEEE80211R */
 173
 174         if (bssid_changed)
 175                 wpas_notify_bssid_changed(wpa_s);
 176
 177         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
 178         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 179         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
 180                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 181         wpa_s->ap_ies_from_associnfo = 0;
 182         wpa_s->current_ssid = NULL;
 183         wpa_s->key_mgmt = 0;
 184 }
 185
 186
 187 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
 188 {
 189         struct wpa_ie_data ie;
 190         int pmksa_set = -1;
 191         size_t i;
 192
 193         if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
 194             ie.pmkid == NULL)
 195                 return;
 196
 197         for (i = 0; i < ie.num_pmkid; i++) {
 198                 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
 199                                                     ie.pmkid + i * PMKID_LEN,
 200                                                     NULL, NULL, 0);
 201                 if (pmksa_set == 0) {
 202                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
 203                         break;
 204                 }
 205         }
 206
 207         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
 208                 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
 209 }
 210
 211
 212 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
 213                                                  union wpa_event_data *data)
 214 {
 215         if (data == NULL) {
 216                 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
 217                         "event");
 218                 return;
 219         }
 220         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
 221                 " index=%d preauth=%d",
 222                 MAC2STR(data->pmkid_candidate.bssid),
 223                 data->pmkid_candidate.index,
 224                 data->pmkid_candidate.preauth);
 225
 226         pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
 227                             data->pmkid_candidate.index,
 228                             data->pmkid_candidate.preauth);
 229 }
 230
 231
 232 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
 233 {
 234         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 235             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
 236                 return 0;
 237
 238 #ifdef IEEE8021X_EAPOL
 239         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
 240             wpa_s->current_ssid &&
 241             !(wpa_s->current_ssid->eapol_flags &
 242               (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 243                EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
 244                 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
 245                  * plaintext or static WEP keys). */
 246                 return 0;
 247         }
 248 #endif /* IEEE8021X_EAPOL */
 249
 250         return 1;
 251 }
 252
 253
 254 /**
 255  * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
 256  * @wpa_s: pointer to wpa_supplicant data
 257  * @ssid: Configuration data for the network
 258  * Returns: 0 on success, -1 on failure
 259  *
 260  * This function is called when starting authentication with a network that is
 261  * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
 262  */
 263 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 264                               struct wpa_ssid *ssid)
 265 {
 266 #ifdef IEEE8021X_EAPOL
 267 #ifdef PCSC_FUNCS
 268         int aka = 0, sim = 0, type;
 269
 270         if (ssid->eap.pcsc == NULL || wpa_s->scard != NULL)
 271                 return 0;
 272
 273         if (ssid->eap.eap_methods == NULL) {
 274                 sim = 1;
 275                 aka = 1;
 276         } else {
 277                 struct eap_method_type *eap = ssid->eap.eap_methods;
 278                 while (eap->vendor != EAP_VENDOR_IETF ||
 279                        eap->method != EAP_TYPE_NONE) {
 280                         if (eap->vendor == EAP_VENDOR_IETF) {
 281                                 if (eap->method == EAP_TYPE_SIM)
 282                                         sim = 1;
 283                                 else if (eap->method == EAP_TYPE_AKA ||
 284                                          eap->method == EAP_TYPE_AKA_PRIME)
 285                                         aka = 1;
 286                         }
 287                         eap++;
 288                 }
 289         }
 290
 291         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
 292                 sim = 0;
 293         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL &&
 294             eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME) ==
 295             NULL)
 296                 aka = 0;
 297
 298         if (!sim && !aka) {
 299                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
 300                         "use SIM, but neither EAP-SIM nor EAP-AKA are "
 301                         "enabled");
 302                 return 0;
 303         }
 304
 305         wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
 306                 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
 307         if (sim && aka)
 308                 type = SCARD_TRY_BOTH;
 309         else if (aka)
 310                 type = SCARD_USIM_ONLY;
 311         else
 312                 type = SCARD_GSM_SIM_ONLY;
 313
 314         wpa_s->scard = scard_init(type, NULL);
 315         if (wpa_s->scard == NULL) {
 316                 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
 317                         "(pcsc-lite)");
 318                 return -1;
 319         }
 320         wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
 321         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
 322 #endif /* PCSC_FUNCS */
 323 #endif /* IEEE8021X_EAPOL */
 324
 325         return 0;
 326 }
 327
 328
 329 #ifndef CONFIG_NO_SCAN_PROCESSING
 330 static int wpa_supplicant_match_privacy(struct wpa_bss *bss,
 331                                         struct wpa_ssid *ssid)
 332 {
 333         int i, privacy = 0;
 334
 335         if (ssid->mixed_cell)
 336                 return 1;
 337
 338 #ifdef CONFIG_WPS
 339         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
 340                 return 1;
 341 #endif /* CONFIG_WPS */
 342
 343         for (i = 0; i < NUM_WEP_KEYS; i++) {
 344                 if (ssid->wep_key_len[i]) {
 345                         privacy = 1;
 346                         break;
 347                 }
 348         }
 349 #ifdef IEEE8021X_EAPOL
 350         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
 351             ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 352                                  EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
 353                 privacy = 1;
 354 #endif /* IEEE8021X_EAPOL */
 355
 356         if (wpa_key_mgmt_wpa(ssid->key_mgmt))
 357                 privacy = 1;
 358
 359         if (bss->caps & IEEE80211_CAP_PRIVACY)
 360                 return privacy;
 361         return !privacy;
 362 }
 363
 364
 365 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
 366                                          struct wpa_ssid *ssid,
 367                                          struct wpa_bss *bss)
 368 {
 369         struct wpa_ie_data ie;
 370         int proto_match = 0;
 371         const u8 *rsn_ie, *wpa_ie;
 372         int ret;
 373         int wep_ok;
 374
 375         ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
 376         if (ret >= 0)
 377                 return ret;
 378
 379         /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
 380         wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 381                 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 382                   ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
 383                  (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
 384
 385         rsn_ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 386         while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
 387                 proto_match++;
 388
 389                 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
 390                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - parse "
 391                                 "failed");
 392                         break;
 393                 }
 394
 395                 if (wep_ok &&
 396                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 397                 {
 398                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 399                                 "in RSN IE");
 400                         return 1;
 401                 }
 402
 403                 if (!(ie.proto & ssid->proto)) {
 404                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - proto "
 405                                 "mismatch");
 406                         break;
 407                 }
 408
 409                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 410                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - PTK "
 411                                 "cipher mismatch");
 412                         break;
 413                 }
 414
 415                 if (!(ie.group_cipher & ssid->group_cipher)) {
 416                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - GTK "
 417                                 "cipher mismatch");
 418                         break;
 419                 }
 420
 421                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 422                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - key mgmt "
 423                                 "mismatch");
 424                         break;
 425                 }
 426
 427 #ifdef CONFIG_IEEE80211W
 428                 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
 429                     (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
 430                      wpa_s->conf->pmf : ssid->ieee80211w) ==
 431                     MGMT_FRAME_PROTECTION_REQUIRED) {
 432                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - no mgmt "
 433                                 "frame protection");
 434                         break;
 435                 }
 436 #endif /* CONFIG_IEEE80211W */
 437
 438                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on RSN IE");
 439                 return 1;
 440         }
 441
 442         wpa_ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 443         while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
 444                 proto_match++;
 445
 446                 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
 447                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - parse "
 448                                 "failed");
 449                         break;
 450                 }
 451
 452                 if (wep_ok &&
 453                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 454                 {
 455                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 456                                 "in WPA IE");
 457                         return 1;
 458                 }
 459
 460                 if (!(ie.proto & ssid->proto)) {
 461                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - proto "
 462                                 "mismatch");
 463                         break;
 464                 }
 465
 466                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 467                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - PTK "
 468                                 "cipher mismatch");
 469                         break;
 470                 }
 471
 472                 if (!(ie.group_cipher & ssid->group_cipher)) {
 473                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - GTK "
 474                                 "cipher mismatch");
 475                         break;
 476                 }
 477
 478                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 479                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - key mgmt "
 480                                 "mismatch");
 481                         break;
 482                 }
 483
 484                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on WPA IE");
 485                 return 1;
 486         }
 487
 488         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && !wpa_ie &&
 489             !rsn_ie) {
 490                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow for non-WPA IEEE 802.1X");
 491                 return 1;
 492         }
 493
 494         if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
 495             wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
 496                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no WPA/RSN proto match");
 497                 return 0;
 498         }
 499
 500         if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
 501                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in non-WPA/WPA2");
 502                 return 1;
 503         }
 504
 505         wpa_dbg(wpa_s, MSG_DEBUG, "   reject due to mismatch with "
 506                 "WPA/WPA2");
 507
 508         return 0;
 509 }
 510
 511
 512 static int freq_allowed(int *freqs, int freq)
 513 {
 514         int i;
 515
 516         if (freqs == NULL)
 517                 return 1;
 518
 519         for (i = 0; freqs[i]; i++)
 520                 if (freqs[i] == freq)
 521                         return 1;
 522         return 0;
 523 }
 524
 525
 526 static int ht_supported(const struct hostapd_hw_modes *mode)
 527 {
 528         if (!(mode->flags & HOSTAPD_MODE_FLAG_HT_INFO_KNOWN)) {
 529                 /*
 530                  * The driver did not indicate whether it supports HT. Assume
 531                  * it does to avoid connection issues.
 532                  */
 533                 return 1;
 534         }
 535
 536         /*
 537          * IEEE Std 802.11n-2009 20.1.1:
 538          * An HT non-AP STA shall support all EQM rates for one spatial stream.
 539          */
 540         return mode->mcs_set[0] == 0xff;
 541 }
 542
 543
 544 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
 545 {
 546         const struct hostapd_hw_modes *mode = NULL, *modes;
 547         const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES };
 548         const u8 *rate_ie;
 549         int i, j, k;
 550
 551         if (bss->freq == 0)
 552                 return 1; /* Cannot do matching without knowing band */
 553
 554         modes = wpa_s->hw.modes;
 555         if (modes == NULL) {
 556                 /*
 557                  * The driver does not provide any additional information
 558                  * about the utilized hardware, so allow the connection attempt
 559                  * to continue.
 560                  */
 561                 return 1;
 562         }
 563
 564         for (i = 0; i < wpa_s->hw.num_modes; i++) {
 565                 for (j = 0; j < modes[i].num_channels; j++) {
 566                         int freq = modes[i].channels[j].freq;
 567                         if (freq == bss->freq) {
 568                                 if (mode &&
 569                                     mode->mode == HOSTAPD_MODE_IEEE80211G)
 570                                         break; /* do not allow 802.11b replace
 571                                                 * 802.11g */
 572                                 mode = &modes[i];
 573                                 break;
 574                         }
 575                 }
 576         }
 577
 578         if (mode == NULL)
 579                 return 0;
 580
 581         for (i = 0; i < (int) sizeof(scan_ie); i++) {
 582                 rate_ie = wpa_bss_get_ie(bss, scan_ie[i]);
 583                 if (rate_ie == NULL)
 584                         continue;
 585
 586                 for (j = 2; j < rate_ie[1] + 2; j++) {
 587                         int flagged = !!(rate_ie[j] & 0x80);
 588                         int r = (rate_ie[j] & 0x7f) * 5;
 589
 590                         /*
 591                          * IEEE Std 802.11n-2009 7.3.2.2:
 592                          * The new BSS Membership selector value is encoded
 593                          * like a legacy basic rate, but it is not a rate and
 594                          * only indicates if the BSS members are required to
 595                          * support the mandatory features of Clause 20 [HT PHY]
 596                          * in order to join the BSS.
 597                          */
 598                         if (flagged && ((rate_ie[j] & 0x7f) ==
 599                                         BSS_MEMBERSHIP_SELECTOR_HT_PHY)) {
 600                                 if (!ht_supported(mode)) {
 601                                         wpa_dbg(wpa_s, MSG_DEBUG,
 602                                                 "   hardware does not support "
 603                                                 "HT PHY");
 604                                         return 0;
 605                                 }
 606                                 continue;
 607                         }
 608
 609                         if (!flagged)
 610                                 continue;
 611
 612                         /* check for legacy basic rates */
 613                         for (k = 0; k < mode->num_rates; k++) {
 614                                 if (mode->rates[k] == r)
 615                                         break;
 616                         }
 617                         if (k == mode->num_rates) {
 618                                 /*
 619                                  * IEEE Std 802.11-2007 7.3.2.2 demands that in
 620                                  * order to join a BSS all required rates
 621                                  * have to be supported by the hardware.
 622                                  */
 623                                 wpa_dbg(wpa_s, MSG_DEBUG, "   hardware does "
 624                                         "not support required rate %d.%d Mbps",
 625                                         r / 10, r % 10);
 626                                 return 0;
 627                         }
 628                 }
 629         }
 630
 631         return 1;
 632 }
 633
 634
 635 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
 636                                             int i, struct wpa_bss *bss,
 637                                             struct wpa_ssid *group)
 638 {
 639         u8 wpa_ie_len, rsn_ie_len;
 640         int wpa;
 641         struct wpa_blacklist *e;
 642         const u8 *ie;
 643         struct wpa_ssid *ssid;
 644
 645         ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 646         wpa_ie_len = ie ? ie[1] : 0;
 647
 648         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 649         rsn_ie_len = ie ? ie[1] : 0;
 650
 651         wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
 652                 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s",
 653                 i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len),
 654                 wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
 655                 wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "");
 656
 657         e = wpa_blacklist_get(wpa_s, bss->bssid);
 658         if (e) {
 659                 int limit = 1;
 660                 if (wpa_supplicant_enabled_networks(wpa_s) == 1) {
 661                         /*
 662                          * When only a single network is enabled, we can
 663                          * trigger blacklisting on the first failure. This
 664                          * should not be done with multiple enabled networks to
 665                          * avoid getting forced to move into a worse ESS on
 666                          * single error if there are no other BSSes of the
 667                          * current ESS.
 668                          */
 669                         limit = 0;
 670                 }
 671                 if (e->count > limit) {
 672                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 673                                 "(count=%d limit=%d)", e->count, limit);
 674                         return NULL;
 675                 }
 676         }
 677
 678         if (bss->ssid_len == 0) {
 679                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID not known");
 680                 return NULL;
 681         }
 682
 683         if (disallowed_bssid(wpa_s, bss->bssid)) {
 684                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID disallowed");
 685                 return NULL;
 686         }
 687
 688         if (disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
 689                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID disallowed");
 690                 return NULL;
 691         }
 692
 693         wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
 694
 695         for (ssid = group; ssid; ssid = ssid->pnext) {
 696                 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
 697                 int res;
 698
 699                 if (wpas_network_disabled(wpa_s, ssid)) {
 700                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled");
 701                         continue;
 702                 }
 703
 704                 res = wpas_temp_disabled(wpa_s, ssid);
 705                 if (res > 0) {
 706                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled "
 707                                 "temporarily for %d second(s)", res);
 708                         continue;
 709                 }
 710
 711 #ifdef CONFIG_WPS
 712                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
 713                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 714                                 "(WPS)");
 715                         continue;
 716                 }
 717
 718                 if (wpa && ssid->ssid_len == 0 &&
 719                     wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 720                         check_ssid = 0;
 721
 722                 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 723                         /* Only allow wildcard SSID match if an AP
 724                          * advertises active WPS operation that matches
 725                          * with our mode. */
 726                         check_ssid = 1;
 727                         if (ssid->ssid_len == 0 &&
 728                             wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 729                                 check_ssid = 0;
 730                 }
 731 #endif /* CONFIG_WPS */
 732
 733                 if (ssid->bssid_set && ssid->ssid_len == 0 &&
 734                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
 735                         check_ssid = 0;
 736
 737                 if (check_ssid &&
 738                     (bss->ssid_len != ssid->ssid_len ||
 739                      os_memcmp(bss->ssid, ssid->ssid, bss->ssid_len) != 0)) {
 740                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID mismatch");
 741                         continue;
 742                 }
 743
 744                 if (ssid->bssid_set &&
 745                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
 746                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID mismatch");
 747                         continue;
 748                 }
 749
 750                 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
 751                         continue;
 752
 753                 if (!wpa &&
 754                     !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 755                     !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
 756                     !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
 757                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-WPA network "
 758                                 "not allowed");
 759                         continue;
 760                 }
 761
 762                 if (!wpa_supplicant_match_privacy(bss, ssid)) {
 763                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - privacy "
 764                                 "mismatch");
 765                         continue;
 766                 }
 767
 768                 if (bss->caps & IEEE80211_CAP_IBSS) {
 769                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - IBSS (adhoc) "
 770                                 "network");
 771                         continue;
 772                 }
 773
 774                 if (!freq_allowed(ssid->freq_list, bss->freq)) {
 775                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - frequency not "
 776                                 "allowed");
 777                         continue;
 778                 }
 779
 780                 if (!rate_match(wpa_s, bss)) {
 781                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - rate sets do "
 782                                 "not match");
 783                         continue;
 784                 }
 785
 786 #ifdef CONFIG_P2P
 787                 /*
 788                  * TODO: skip the AP if its P2P IE has Group Formation
 789                  * bit set in the P2P Group Capability Bitmap and we
 790                  * are not in Group Formation with that device.
 791                  */
 792 #endif /* CONFIG_P2P */
 793
 794                 /* Matching configuration found */
 795                 return ssid;
 796         }
 797
 798         /* No matching configuration found */
 799         return NULL;
 800 }
 801
 802
 803 static struct wpa_bss *
 804 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
 805                           struct wpa_ssid *group,
 806                           struct wpa_ssid **selected_ssid)
 807 {
 808         unsigned int i;
 809
 810         wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
 811                 group->priority);
 812
 813         for (i = 0; i < wpa_s->last_scan_res_used; i++) {
 814                 struct wpa_bss *bss = wpa_s->last_scan_res[i];
 815                 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group);
 816                 if (!*selected_ssid)
 817                         continue;
 818                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected BSS " MACSTR
 819                         " ssid='%s'",
 820                         MAC2STR(bss->bssid),
 821                         wpa_ssid_txt(bss->ssid, bss->ssid_len));
 822                 return bss;
 823         }
 824
 825         return NULL;
 826 }
 827
 828
 829 static struct wpa_bss *
 830 wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
 831                             struct wpa_ssid **selected_ssid)
 832 {
 833         struct wpa_bss *selected = NULL;
 834         int prio;
 835
 836         if (wpa_s->last_scan_res == NULL ||
 837             wpa_s->last_scan_res_used == 0)
 838                 return NULL; /* no scan results from last update */
 839
 840         while (selected == NULL) {
 841                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 842                         selected = wpa_supplicant_select_bss(
 843                                 wpa_s, wpa_s->conf->pssid[prio],
 844                                 selected_ssid);
 845                         if (selected)
 846                                 break;
 847                 }
 848
 849                 if (selected == NULL && wpa_s->blacklist &&
 850                     !wpa_s->countermeasures) {
 851                         wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
 852                                 "blacklist and try again");
 853                         wpa_blacklist_clear(wpa_s);
 854                         wpa_s->blacklist_cleared++;
 855                 } else if (selected == NULL)
 856                         break;
 857         }
 858
 859         return selected;
 860 }
 861
 862
 863 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
 864                                         int timeout_sec, int timeout_usec)
 865 {
 866         if (!wpa_supplicant_enabled_networks(wpa_s)) {
 867                 /*
 868                  * No networks are enabled; short-circuit request so
 869                  * we don't wait timeout seconds before transitioning
 870                  * to INACTIVE state.
 871                  */
 872                 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request "
 873                         "since there are no enabled networks");
 874                 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
 875 #ifdef CONFIG_P2P
 876                 wpa_s->sta_scan_pending = 0;
 877 #endif /* CONFIG_P2P */
 878                 return;
 879         }
 880
 881         wpa_s->scan_for_connection = 1;
 882         wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
 883 }
 884
 885
 886 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
 887                            struct wpa_bss *selected,
 888                            struct wpa_ssid *ssid)
 889 {
 890         if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
 891                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
 892                         "PBC session overlap");
 893 #ifdef CONFIG_P2P
 894                 if (wpas_p2p_notif_pbc_overlap(wpa_s) == 1)
 895                         return -1;
 896 #endif /* CONFIG_P2P */
 897
 898 #ifdef CONFIG_WPS
 899                 wpas_wps_cancel(wpa_s);
 900 #endif /* CONFIG_WPS */
 901                 return -1;
 902         }
 903
 904         /*
 905          * Do not trigger new association unless the BSSID has changed or if
 906          * reassociation is requested. If we are in process of associating with
 907          * the selected BSSID, do not trigger new attempt.
 908          */
 909         if (wpa_s->reassociate ||
 910             (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
 911              ((wpa_s->wpa_state != WPA_ASSOCIATING &&
 912                wpa_s->wpa_state != WPA_AUTHENTICATING) ||
 913               os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
 914               0))) {
 915                 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
 916                         wpa_supplicant_req_new_scan(wpa_s, 10, 0);
 917                         return 0;
 918                 }
 919                 wpa_msg(wpa_s, MSG_DEBUG, "Request association: "
 920                         "reassociate: %d  selected: "MACSTR "  bssid: " MACSTR
 921                         "  pending: " MACSTR "  wpa_state: %s",
 922                         wpa_s->reassociate, MAC2STR(selected->bssid),
 923                         MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
 924                         wpa_supplicant_state_txt(wpa_s->wpa_state));
 925                 wpa_supplicant_associate(wpa_s, selected, ssid);
 926         } else {
 927                 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated with the "
 928                         "selected AP");
 929         }
 930
 931         return 0;
 932 }
 933
 934
 935 static struct wpa_ssid *
 936 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
 937 {
 938         int prio;
 939         struct wpa_ssid *ssid;
 940
 941         for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 942                 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
 943                 {
 944                         if (wpas_network_disabled(wpa_s, ssid))
 945                                 continue;
 946                         if (ssid->mode == IEEE80211_MODE_IBSS ||
 947                             ssid->mode == IEEE80211_MODE_AP)
 948                                 return ssid;
 949                 }
 950         }
 951         return NULL;
 952 }
 953
 954
 955 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
 956  * on BSS added and BSS changed events */
 957 static void wpa_supplicant_rsn_preauth_scan_results(
 958         struct wpa_supplicant *wpa_s)
 959 {
 960         struct wpa_bss *bss;
 961
 962         if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
 963                 return;
 964
 965         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 966                 const u8 *ssid, *rsn;
 967
 968                 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
 969                 if (ssid == NULL)
 970                         continue;
 971
 972                 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 973                 if (rsn == NULL)
 974                         continue;
 975
 976                 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
 977         }
 978
 979 }
 980
 981
 982 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
 983                                        struct wpa_bss *selected,
 984                                        struct wpa_ssid *ssid)
 985 {
 986         struct wpa_bss *current_bss = NULL;
 987         int min_diff;
 988
 989         if (wpa_s->reassociate)
 990                 return 1; /* explicit request to reassociate */
 991         if (wpa_s->wpa_state < WPA_ASSOCIATED)
 992                 return 1; /* we are not associated; continue */
 993         if (wpa_s->current_ssid == NULL)
 994                 return 1; /* unknown current SSID */
 995         if (wpa_s->current_ssid != ssid)
 996                 return 1; /* different network block */
 997
 998         if (wpas_driver_bss_selection(wpa_s))
 999                 return 0; /* Driver-based roaming */
1000
1001         if (wpa_s->current_ssid->ssid)
1002                 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid,
1003                                           wpa_s->current_ssid->ssid,
1004                                           wpa_s->current_ssid->ssid_len);
1005         if (!current_bss)
1006                 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
1007
1008         if (!current_bss)
1009                 return 1; /* current BSS not seen in scan results */
1010
1011         if (current_bss == selected)
1012                 return 0;
1013
1014         if (selected->last_update_idx > current_bss->last_update_idx)
1015                 return 1; /* current BSS not seen in the last scan */
1016
1017 #ifndef CONFIG_NO_ROAMING
1018         wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
1019         wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
1020                 MAC2STR(current_bss->bssid), current_bss->level);
1021         wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
1022                 MAC2STR(selected->bssid), selected->level);
1023
1024         if (wpa_s->current_ssid->bssid_set &&
1025             os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
1026             0) {
1027                 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
1028                         "has preferred BSSID");
1029                 return 1;
1030         }
1031
1032         if (current_bss->level < 0 && current_bss->level > selected->level) {
1033                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better "
1034                         "signal level");
1035                 return 0;
1036         }
1037
1038         min_diff = 2;
1039         if (current_bss->level < 0) {
1040                 if (current_bss->level < -85)
1041                         min_diff = 1;
1042                 else if (current_bss->level < -80)
1043                         min_diff = 2;
1044                 else if (current_bss->level < -75)
1045                         min_diff = 3;
1046                 else if (current_bss->level < -70)
1047                         min_diff = 4;
1048                 else
1049                         min_diff = 5;
1050         }
1051         if (abs(current_bss->level - selected->level) < min_diff) {
1052                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
1053                         "in signal level");
1054                 return 0;
1055         }
1056
1057         return 1;
1058 #else /* CONFIG_NO_ROAMING */
1059         return 0;
1060 #endif /* CONFIG_NO_ROAMING */
1061 }
1062
1063
1064 /* Return != 0 if no scan results could be fetched or if scan results should not
1065  * be shared with other virtual interfaces. */
1066 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1067                                               union wpa_event_data *data)
1068 {
1069         struct wpa_scan_results *scan_res;
1070         int ap = 0;
1071 #ifndef CONFIG_NO_RANDOM_POOL
1072         size_t i, num;
1073 #endif /* CONFIG_NO_RANDOM_POOL */
1074
1075 #ifdef CONFIG_AP
1076         if (wpa_s->ap_iface)
1077                 ap = 1;
1078 #endif /* CONFIG_AP */
1079
1080         wpa_supplicant_notify_scanning(wpa_s, 0);
1081
1082 #ifdef CONFIG_P2P
1083         if (wpa_s->global->p2p_cb_on_scan_complete &&
1084             !wpa_s->global->p2p_disabled &&
1085             wpa_s->global->p2p != NULL && !wpa_s->sta_scan_pending &&
1086             !wpa_s->scan_res_handler) {
1087                 wpa_s->global->p2p_cb_on_scan_complete = 0;
1088                 if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) {
1089                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation "
1090                                 "stopped scan processing");
1091                         wpa_s->sta_scan_pending = 1;
1092                         wpa_supplicant_req_scan(wpa_s, 5, 0);
1093                         return -1;
1094                 }
1095         }
1096         wpa_s->sta_scan_pending = 0;
1097 #endif /* CONFIG_P2P */
1098
1099         scan_res = wpa_supplicant_get_scan_results(wpa_s,
1100                                                    data ? &data->scan_info :
1101                                                    NULL, 1);
1102         if (scan_res == NULL) {
1103                 if (wpa_s->conf->ap_scan == 2 || ap)
1104                         return -1;
1105                 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1106                         "scanning again");
1107                 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1108                 return -1;
1109         }
1110
1111 #ifndef CONFIG_NO_RANDOM_POOL
1112         num = scan_res->num;
1113         if (num > 10)
1114                 num = 10;
1115         for (i = 0; i < num; i++) {
1116                 u8 buf[5];
1117                 struct wpa_scan_res *res = scan_res->res[i];
1118                 buf[0] = res->bssid[5];
1119                 buf[1] = res->qual & 0xff;
1120                 buf[2] = res->noise & 0xff;
1121                 buf[3] = res->level & 0xff;
1122                 buf[4] = res->tsf & 0xff;
1123                 random_add_randomness(buf, sizeof(buf));
1124         }
1125 #endif /* CONFIG_NO_RANDOM_POOL */
1126
1127         if (wpa_s->scan_res_handler) {
1128                 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1129                                          struct wpa_scan_results *scan_res);
1130
1131                 scan_res_handler = wpa_s->scan_res_handler;
1132                 wpa_s->scan_res_handler = NULL;
1133                 scan_res_handler(wpa_s, scan_res);
1134
1135                 wpa_scan_results_free(scan_res);
1136                 return -2;
1137         }
1138
1139         if (ap) {
1140                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1141 #ifdef CONFIG_AP
1142                 if (wpa_s->ap_iface->scan_cb)
1143                         wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1144 #endif /* CONFIG_AP */
1145                 wpa_scan_results_free(scan_res);
1146                 return 0;
1147         }
1148
1149         wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available");
1150         wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1151         wpas_notify_scan_results(wpa_s);
1152
1153         wpas_notify_scan_done(wpa_s, 1);
1154
1155         if (sme_proc_obss_scan(wpa_s) > 0) {
1156                 wpa_scan_results_free(scan_res);
1157                 return 0;
1158         }
1159
1160         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s))) {
1161                 wpa_scan_results_free(scan_res);
1162                 return 0;
1163         }
1164
1165         if (autoscan_notify_scan(wpa_s, scan_res)) {
1166                 wpa_scan_results_free(scan_res);
1167                 return 0;
1168         }
1169
1170         if (wpa_s->disconnected) {
1171                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1172                 wpa_scan_results_free(scan_res);
1173                 return 0;
1174         }
1175
1176         if (!wpas_driver_bss_selection(wpa_s) &&
1177             bgscan_notify_scan(wpa_s, scan_res) == 1) {
1178                 wpa_scan_results_free(scan_res);
1179                 return 0;
1180         }
1181
1182         wpas_wps_update_ap_info(wpa_s, scan_res);
1183
1184         wpa_scan_results_free(scan_res);
1185
1186         return wpas_select_network_from_last_scan(wpa_s);
1187 }
1188
1189
1190 int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s)
1191 {
1192         struct wpa_bss *selected;
1193         struct wpa_ssid *ssid = NULL;
1194
1195         selected = wpa_supplicant_pick_network(wpa_s, &ssid);
1196
1197         if (selected) {
1198                 int skip;
1199                 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid);
1200                 if (skip) {
1201                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1202                         return 0;
1203                 }
1204
1205                 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1206                         wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1207                         return -1;
1208                 }
1209                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1210                 /*
1211                  * Do not notify other virtual radios of scan results since we do not
1212                  * want them to start other associations at the same time.
1213                  */
1214                 return 1;
1215         } else {
1216                 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1217                 ssid = wpa_supplicant_pick_new_network(wpa_s);
1218                 if (ssid) {
1219                         wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1220                         wpa_supplicant_associate(wpa_s, NULL, ssid);
1221                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1222                 } else {
1223                         int timeout_sec = wpa_s->scan_interval;
1224                         int timeout_usec = 0;
1225 #ifdef CONFIG_P2P
1226                         if (wpas_p2p_scan_no_go_seen(wpa_s) == 1)
1227                                 return 0;
1228
1229                         if (wpa_s->p2p_in_provisioning) {
1230                                 /*
1231                                  * Use shorter wait during P2P Provisioning
1232                                  * state to speed up group formation.
1233                                  */
1234                                 timeout_sec = 0;
1235                                 timeout_usec = 250000;
1236                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1237                                                             timeout_usec);
1238                                 return 0;
1239                         }
1240 #endif /* CONFIG_P2P */
1241 #ifdef CONFIG_INTERWORKING
1242                         if (wpa_s->conf->auto_interworking &&
1243                             wpa_s->conf->interworking &&
1244                             wpa_s->conf->cred) {
1245                                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: "
1246                                         "start ANQP fetch since no matching "
1247                                         "networks found");
1248                                 wpa_s->network_select = 1;
1249                                 wpa_s->auto_network_select = 1;
1250                                 interworking_start_fetch_anqp(wpa_s);
1251                                 return 1;
1252                         }
1253 #endif /* CONFIG_INTERWORKING */
1254                         if (wpa_supplicant_req_sched_scan(wpa_s))
1255                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1256                                                             timeout_usec);
1257                 }
1258         }
1259         return 0;
1260 }
1261
1262
1263 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1264                                               union wpa_event_data *data)
1265 {
1266         const char *rn, *rn2;
1267         struct wpa_supplicant *ifs;
1268
1269         if (_wpa_supplicant_event_scan_results(wpa_s, data) != 0) {
1270                 /*
1271                  * If no scan results could be fetched, then no need to
1272                  * notify those interfaces that did not actually request
1273                  * this scan. Similarly, if scan results started a new operation on this
1274                  * interface, do not notify other interfaces to avoid concurrent
1275                  * operations during a connection attempt.
1276                  */
1277                 return;
1278         }
1279
1280         /*
1281          * Check other interfaces to see if they have the same radio-name. If
1282          * so, they get updated with this same scan info.
1283          */
1284         if (!wpa_s->driver->get_radio_name)
1285                 return;
1286
1287         rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
1288         if (rn == NULL || rn[0] == '\0')
1289                 return;
1290
1291         wpa_dbg(wpa_s, MSG_DEBUG, "Checking for other virtual interfaces "
1292                 "sharing same radio (%s) in event_scan_results", rn);
1293
1294         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
1295                 if (ifs == wpa_s || !ifs->driver->get_radio_name)
1296                         continue;
1297
1298                 rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
1299                 if (rn2 && os_strcmp(rn, rn2) == 0) {
1300                         wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1301                                    "sibling", ifs->ifname);
1302                         _wpa_supplicant_event_scan_results(ifs, data);
1303                 }
1304         }
1305 }
1306
1307 #endif /* CONFIG_NO_SCAN_PROCESSING */
1308
1309
1310 #ifdef CONFIG_WNM
1311
1312 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx)
1313 {
1314         struct wpa_supplicant *wpa_s = eloop_ctx;
1315
1316         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1317                 return;
1318
1319         if (!wpa_s->no_keep_alive) {
1320                 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR,
1321                            MAC2STR(wpa_s->bssid));
1322                 /* TODO: could skip this if normal data traffic has been sent */
1323                 /* TODO: Consider using some more appropriate data frame for
1324                  * this */
1325                 if (wpa_s->l2)
1326                         l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800,
1327                                        (u8 *) "", 0);
1328         }
1329
1330 #ifdef CONFIG_SME
1331         if (wpa_s->sme.bss_max_idle_period) {
1332                 unsigned int msec;
1333                 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */
1334                 if (msec > 100)
1335                         msec -= 100;
1336                 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1337                                        wnm_bss_keep_alive, wpa_s, NULL);
1338         }
1339 #endif /* CONFIG_SME */
1340 }
1341
1342
1343 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s,
1344                                    const u8 *ies, size_t ies_len)
1345 {
1346         struct ieee802_11_elems elems;
1347
1348         if (ies == NULL)
1349                 return;
1350
1351         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1352                 return;
1353
1354 #ifdef CONFIG_SME
1355         if (elems.bss_max_idle_period) {
1356                 unsigned int msec;
1357                 wpa_s->sme.bss_max_idle_period =
1358                         WPA_GET_LE16(elems.bss_max_idle_period);
1359                 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 "
1360                            "TU)%s", wpa_s->sme.bss_max_idle_period,
1361                            (elems.bss_max_idle_period[2] & 0x01) ?
1362                            " (protected keep-live required)" : "");
1363                 if (wpa_s->sme.bss_max_idle_period == 0)
1364                         wpa_s->sme.bss_max_idle_period = 1;
1365                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
1366                         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1367                          /* msec times 1000 */
1368                         msec = wpa_s->sme.bss_max_idle_period * 1024;
1369                         if (msec > 100)
1370                                 msec -= 100;
1371                         eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1372                                                wnm_bss_keep_alive, wpa_s,
1373                                                NULL);
1374                 }
1375         }
1376 #endif /* CONFIG_SME */
1377 }
1378
1379 #endif /* CONFIG_WNM */
1380
1381
1382 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s)
1383 {
1384 #ifdef CONFIG_WNM
1385         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1386 #endif /* CONFIG_WNM */
1387 }
1388
1389
1390 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1391                                           union wpa_event_data *data)
1392 {
1393         int l, len, found = 0, wpa_found, rsn_found;
1394         const u8 *p;
1395
1396         wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1397         if (data->assoc_info.req_ies)
1398                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1399                             data->assoc_info.req_ies_len);
1400         if (data->assoc_info.resp_ies) {
1401                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1402                             data->assoc_info.resp_ies_len);
1403 #ifdef CONFIG_TDLS
1404                 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1405                                         data->assoc_info.resp_ies_len);
1406 #endif /* CONFIG_TDLS */
1407 #ifdef CONFIG_WNM
1408                 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1409                                        data->assoc_info.resp_ies_len);
1410 #endif /* CONFIG_WNM */
1411         }
1412         if (data->assoc_info.beacon_ies)
1413                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1414                             data->assoc_info.beacon_ies,
1415                             data->assoc_info.beacon_ies_len);
1416         if (data->assoc_info.freq)
1417                 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1418                         data->assoc_info.freq);
1419
1420         p = data->assoc_info.req_ies;
1421         l = data->assoc_info.req_ies_len;
1422
1423         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1424         while (p && l >= 2) {
1425                 len = p[1] + 2;
1426                 if (len > l) {
1427                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1428                                     p, l);
1429                         break;
1430                 }
1431                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1432                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1433                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1434                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1435                                 break;
1436                         found = 1;
1437                         wpa_find_assoc_pmkid(wpa_s);
1438                         break;
1439                 }
1440                 l -= len;
1441                 p += len;
1442         }
1443         if (!found && data->assoc_info.req_ies)
1444                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1445
1446 #ifdef CONFIG_IEEE80211R
1447 #ifdef CONFIG_SME
1448         if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1449                 u8 bssid[ETH_ALEN];
1450                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1451                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1452                                                  data->assoc_info.resp_ies,
1453                                                  data->assoc_info.resp_ies_len,
1454                                                  bssid) < 0) {
1455                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1456                                 "Reassociation Response failed");
1457                         wpa_supplicant_deauthenticate(
1458                                 wpa_s, WLAN_REASON_INVALID_IE);
1459                         return -1;
1460                 }
1461         }
1462
1463         p = data->assoc_info.resp_ies;
1464         l = data->assoc_info.resp_ies_len;
1465
1466 #ifdef CONFIG_WPS_STRICT
1467         if (p && wpa_s->current_ssid &&
1468             wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1469                 struct wpabuf *wps;
1470                 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1471                 if (wps == NULL) {
1472                         wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1473                                 "include WPS IE in (Re)Association Response");
1474                         return -1;
1475                 }
1476
1477                 if (wps_validate_assoc_resp(wps) < 0) {
1478                         wpabuf_free(wps);
1479                         wpa_supplicant_deauthenticate(
1480                                 wpa_s, WLAN_REASON_INVALID_IE);
1481                         return -1;
1482                 }
1483                 wpabuf_free(wps);
1484         }
1485 #endif /* CONFIG_WPS_STRICT */
1486
1487         /* Go through the IEs and make a copy of the MDIE, if present. */
1488         while (p && l >= 2) {
1489                 len = p[1] + 2;
1490                 if (len > l) {
1491                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1492                                     p, l);
1493                         break;
1494                 }
1495                 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1496                     p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1497                         wpa_s->sme.ft_used = 1;
1498                         os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1499                                   MOBILITY_DOMAIN_ID_LEN);
1500                         break;
1501                 }
1502                 l -= len;
1503                 p += len;
1504         }
1505 #endif /* CONFIG_SME */
1506
1507         wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1508                              data->assoc_info.resp_ies_len);
1509 #endif /* CONFIG_IEEE80211R */
1510
1511         /* WPA/RSN IE from Beacon/ProbeResp */
1512         p = data->assoc_info.beacon_ies;
1513         l = data->assoc_info.beacon_ies_len;
1514
1515         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1516          */
1517         wpa_found = rsn_found = 0;
1518         while (p && l >= 2) {
1519                 len = p[1] + 2;
1520                 if (len > l) {
1521                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1522                                     p, l);
1523                         break;
1524                 }
1525                 if (!wpa_found &&
1526                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1527                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1528                         wpa_found = 1;
1529                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1530                 }
1531
1532                 if (!rsn_found &&
1533                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
1534                         rsn_found = 1;
1535                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1536                 }
1537
1538                 l -= len;
1539                 p += len;
1540         }
1541
1542         if (!wpa_found && data->assoc_info.beacon_ies)
1543                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1544         if (!rsn_found && data->assoc_info.beacon_ies)
1545                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1546         if (wpa_found || rsn_found)
1547                 wpa_s->ap_ies_from_associnfo = 1;
1548
1549         if (wpa_s->assoc_freq && data->assoc_info.freq &&
1550             wpa_s->assoc_freq != data->assoc_info.freq) {
1551                 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
1552                            "%u to %u MHz",
1553                            wpa_s->assoc_freq, data->assoc_info.freq);
1554                 wpa_supplicant_update_scan_results(wpa_s);
1555         }
1556
1557         wpa_s->assoc_freq = data->assoc_info.freq;
1558
1559         return 0;
1560 }
1561
1562
1563 static struct wpa_bss * wpa_supplicant_get_new_bss(
1564         struct wpa_supplicant *wpa_s, const u8 *bssid)
1565 {
1566         struct wpa_bss *bss = NULL;
1567         struct wpa_ssid *ssid = wpa_s->current_ssid;
1568
1569         if (ssid->ssid_len > 0)
1570                 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
1571         if (!bss)
1572                 bss = wpa_bss_get_bssid(wpa_s, bssid);
1573
1574         return bss;
1575 }
1576
1577
1578 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
1579 {
1580         const u8 *bss_wpa = NULL, *bss_rsn = NULL;
1581
1582         if (!wpa_s->current_bss || !wpa_s->current_ssid)
1583                 return -1;
1584
1585         if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
1586                 return 0;
1587
1588         bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
1589                                         WPA_IE_VENDOR_TYPE);
1590         bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
1591
1592         if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
1593                                  bss_wpa ? 2 + bss_wpa[1] : 0) ||
1594             wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
1595                                  bss_rsn ? 2 + bss_rsn[1] : 0))
1596                 return -1;
1597
1598         return 0;
1599 }
1600
1601
1602 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1603                                        union wpa_event_data *data)
1604 {
1605         u8 bssid[ETH_ALEN];
1606         int ft_completed;
1607         struct wpa_driver_capa capa;
1608
1609 #ifdef CONFIG_AP
1610         if (wpa_s->ap_iface) {
1611                 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1612                                     data->assoc_info.addr,
1613                                     data->assoc_info.req_ies,
1614                                     data->assoc_info.req_ies_len,
1615                                     data->assoc_info.reassoc);
1616                 return;
1617         }
1618 #endif /* CONFIG_AP */
1619
1620         ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1621         if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1622                 return;
1623
1624         if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
1625                 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID");
1626                 wpa_supplicant_deauthenticate(
1627                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1628                 return;
1629         }
1630
1631         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1632         if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
1633                 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1634                         MACSTR, MAC2STR(bssid));
1635                 random_add_randomness(bssid, ETH_ALEN);
1636                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1637                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1638                 wpas_notify_bssid_changed(wpa_s);
1639
1640                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1641                         wpa_clear_keys(wpa_s, bssid);
1642                 }
1643                 if (wpa_supplicant_select_config(wpa_s) < 0) {
1644                         wpa_supplicant_deauthenticate(
1645                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1646                         return;
1647                 }
1648                 if (wpa_s->current_ssid) {
1649                         struct wpa_bss *bss = NULL;
1650
1651                         bss = wpa_supplicant_get_new_bss(wpa_s, bssid);
1652                         if (!bss) {
1653                                 wpa_supplicant_update_scan_results(wpa_s);
1654
1655                                 /* Get the BSS from the new scan results */
1656                                 bss = wpa_supplicant_get_new_bss(wpa_s, bssid);
1657                         }
1658
1659                         if (bss)
1660                                 wpa_s->current_bss = bss;
1661                 }
1662
1663                 if (wpa_s->conf->ap_scan == 1 &&
1664                     wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
1665                         if (wpa_supplicant_assoc_update_ie(wpa_s) < 0)
1666                                 wpa_msg(wpa_s, MSG_WARNING,
1667                                         "WPA/RSN IEs not updated");
1668                 }
1669         }
1670
1671 #ifdef CONFIG_SME
1672         os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1673         wpa_s->sme.prev_bssid_set = 1;
1674 #endif /* CONFIG_SME */
1675
1676         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1677         if (wpa_s->current_ssid) {
1678                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1679                  * initialized before association, but for other modes,
1680                  * initialize PC/SC here, if the current configuration needs
1681                  * smartcard or SIM/USIM. */
1682                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1683         }
1684         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1685         if (wpa_s->l2)
1686                 l2_packet_notify_auth_start(wpa_s->l2);
1687
1688         /*
1689          * Set portEnabled first to FALSE in order to get EAP state machine out
1690          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1691          * state machine may transit to AUTHENTICATING state based on obsolete
1692          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1693          * AUTHENTICATED without ever giving chance to EAP state machine to
1694          * reset the state.
1695          */
1696         if (!ft_completed) {
1697                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1698                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1699         }
1700         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1701                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1702         /* 802.1X::portControl = Auto */
1703         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1704         wpa_s->eapol_received = 0;
1705         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1706             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1707             (wpa_s->current_ssid &&
1708              wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1709                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1710                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1711         } else if (!ft_completed) {
1712                 /* Timeout for receiving the first EAPOL packet */
1713                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1714         }
1715         wpa_supplicant_cancel_scan(wpa_s);
1716
1717         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1718             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1719                 /*
1720                  * We are done; the driver will take care of RSN 4-way
1721                  * handshake.
1722                  */
1723                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1724                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1725                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1726                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1727         } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1728                    wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1729                 /*
1730                  * The driver will take care of RSN 4-way handshake, so we need
1731                  * to allow EAPOL supplicant to complete its work without
1732                  * waiting for WPA supplicant.
1733                  */
1734                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1735         } else if (ft_completed) {
1736                 /*
1737                  * FT protocol completed - make sure EAPOL state machine ends
1738                  * up in authenticated.
1739                  */
1740                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1741                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1742                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1743                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1744         }
1745
1746         wpa_s->last_eapol_matches_bssid = 0;
1747
1748         if (wpa_s->pending_eapol_rx) {
1749                 struct os_time now, age;
1750                 os_get_time(&now);
1751                 os_time_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
1752                 if (age.sec == 0 && age.usec < 100000 &&
1753                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
1754                     0) {
1755                         wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
1756                                 "frame that was received just before "
1757                                 "association notification");
1758                         wpa_supplicant_rx_eapol(
1759                                 wpa_s, wpa_s->pending_eapol_rx_src,
1760                                 wpabuf_head(wpa_s->pending_eapol_rx),
1761                                 wpabuf_len(wpa_s->pending_eapol_rx));
1762                 }
1763                 wpabuf_free(wpa_s->pending_eapol_rx);
1764                 wpa_s->pending_eapol_rx = NULL;
1765         }
1766
1767         if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1768              wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
1769             wpa_s->current_ssid && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1770             capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE) {
1771                 /* Set static WEP keys again */
1772                 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
1773         }
1774
1775 #ifdef CONFIG_IBSS_RSN
1776         if (wpa_s->current_ssid &&
1777             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
1778             wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1779             wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
1780             wpa_s->ibss_rsn == NULL) {
1781                 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
1782                 if (!wpa_s->ibss_rsn) {
1783                         wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
1784                         wpa_supplicant_deauthenticate(
1785                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1786                         return;
1787                 }
1788
1789                 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
1790         }
1791 #endif /* CONFIG_IBSS_RSN */
1792
1793         wpas_wps_notify_assoc(wpa_s, bssid);
1794 }
1795
1796
1797 static int disconnect_reason_recoverable(u16 reason_code)
1798 {
1799         return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
1800                 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
1801                 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
1802 }
1803
1804
1805 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
1806                                           u16 reason_code,
1807                                           int locally_generated)
1808 {
1809         const u8 *bssid;
1810
1811         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1812                 /*
1813                  * At least Host AP driver and a Prism3 card seemed to be
1814                  * generating streams of disconnected events when configuring
1815                  * IBSS for WPA-None. Ignore them for now.
1816                  */
1817                 return;
1818         }
1819
1820         bssid = wpa_s->bssid;
1821         if (is_zero_ether_addr(bssid))
1822                 bssid = wpa_s->pending_bssid;
1823
1824         if (!is_zero_ether_addr(bssid) ||
1825             wpa_s->wpa_state >= WPA_AUTHENTICATING) {
1826                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
1827                         " reason=%d%s",
1828                         MAC2STR(bssid), reason_code,
1829                         locally_generated ? " locally_generated=1" : "");
1830         }
1831 }
1832
1833
1834 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code,
1835                                  int locally_generated)
1836 {
1837         if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE ||
1838             !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
1839                 return 0; /* Not in 4-way handshake with PSK */
1840
1841         /*
1842          * It looks like connection was lost while trying to go through PSK
1843          * 4-way handshake. Filter out known disconnection cases that are caused
1844          * by something else than PSK mismatch to avoid confusing reports.
1845          */
1846
1847         if (locally_generated) {
1848                 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS)
1849                         return 0;
1850         }
1851
1852         return 1;
1853 }
1854
1855
1856 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s,
1857                                                  u16 reason_code,
1858                                                  int locally_generated)
1859 {
1860         const u8 *bssid;
1861         int authenticating;
1862         u8 prev_pending_bssid[ETH_ALEN];
1863         struct wpa_bss *fast_reconnect = NULL;
1864         struct wpa_ssid *fast_reconnect_ssid = NULL;
1865         struct wpa_ssid *last_ssid;
1866
1867         authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
1868         os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
1869
1870         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1871                 /*
1872                  * At least Host AP driver and a Prism3 card seemed to be
1873                  * generating streams of disconnected events when configuring
1874                  * IBSS for WPA-None. Ignore them for now.
1875                  */
1876                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
1877                         "IBSS/WPA-None mode");
1878                 return;
1879         }
1880
1881         if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) {
1882                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
1883                         "pre-shared key may be incorrect");
1884                 wpas_auth_failed(wpa_s);
1885         }
1886         if (!wpa_s->auto_reconnect_disabled ||
1887             wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) {
1888                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
1889                         "reconnect (wps=%d wpa_state=%d)",
1890                         wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
1891                         wpa_s->wpa_state);
1892                 if (wpa_s->wpa_state == WPA_COMPLETED &&
1893                     wpa_s->current_ssid &&
1894                     wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
1895                     !locally_generated &&
1896                     disconnect_reason_recoverable(reason_code)) {
1897                         /*
1898                          * It looks like the AP has dropped association with
1899                          * us, but could allow us to get back in. Try to
1900                          * reconnect to the same BSS without full scan to save
1901                          * time for some common cases.
1902                          */
1903                         fast_reconnect = wpa_s->current_bss;
1904                         fast_reconnect_ssid = wpa_s->current_ssid;
1905                 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
1906                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
1907                 else
1908                         wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
1909                                 "immediate scan");
1910         } else {
1911                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
1912                         "try to re-connect");
1913                 wpa_s->reassociate = 0;
1914                 wpa_s->disconnected = 1;
1915                 wpa_supplicant_cancel_sched_scan(wpa_s);
1916         }
1917         bssid = wpa_s->bssid;
1918         if (is_zero_ether_addr(bssid))
1919                 bssid = wpa_s->pending_bssid;
1920         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
1921                 wpas_connection_failed(wpa_s, bssid);
1922         wpa_sm_notify_disassoc(wpa_s->wpa);
1923         if (locally_generated)
1924                 wpa_s->disconnect_reason = -reason_code;
1925         else
1926                 wpa_s->disconnect_reason = reason_code;
1927         wpas_notify_disconnect_reason(wpa_s);
1928         if (wpa_supplicant_dynamic_keys(wpa_s)) {
1929                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
1930                 wpa_s->keys_cleared = 0;
1931                 wpa_clear_keys(wpa_s, wpa_s->bssid);
1932         }
1933         last_ssid = wpa_s->current_ssid;
1934         wpa_supplicant_mark_disassoc(wpa_s);
1935
1936         if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
1937                 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
1938                 wpa_s->current_ssid = last_ssid;
1939         }
1940
1941         if (fast_reconnect) {
1942 #ifndef CONFIG_NO_SCAN_PROCESSING
1943                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
1944                 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
1945                                            fast_reconnect_ssid) < 0) {
1946                         /* Recover through full scan */
1947                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
1948                 }
1949 #endif /* CONFIG_NO_SCAN_PROCESSING */
1950         }
1951 }
1952
1953
1954 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1955 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
1956 {
1957         struct wpa_supplicant *wpa_s = eloop_ctx;
1958
1959         if (!wpa_s->pending_mic_error_report)
1960                 return;
1961
1962         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
1963         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
1964         wpa_s->pending_mic_error_report = 0;
1965 }
1966 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1967
1968
1969 static void
1970 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
1971                                          union wpa_event_data *data)
1972 {
1973         int pairwise;
1974         struct os_time t;
1975
1976         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
1977         pairwise = (data && data->michael_mic_failure.unicast);
1978         os_get_time(&t);
1979         if ((wpa_s->last_michael_mic_error &&
1980              t.sec - wpa_s->last_michael_mic_error <= 60) ||
1981             wpa_s->pending_mic_error_report) {
1982                 if (wpa_s->pending_mic_error_report) {
1983                         /*
1984                          * Send the pending MIC error report immediately since
1985                          * we are going to start countermeasures and AP better
1986                          * do the same.
1987                          */
1988                         wpa_sm_key_request(wpa_s->wpa, 1,
1989                                            wpa_s->pending_mic_error_pairwise);
1990                 }
1991
1992                 /* Send the new MIC error report immediately since we are going
1993                  * to start countermeasures and AP better do the same.
1994                  */
1995                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1996
1997                 /* initialize countermeasures */
1998                 wpa_s->countermeasures = 1;
1999
2000                 wpa_blacklist_add(wpa_s, wpa_s->bssid);
2001
2002                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
2003
2004                 /*
2005                  * Need to wait for completion of request frame. We do not get
2006                  * any callback for the message completion, so just wait a
2007                  * short while and hope for the best. */
2008                 os_sleep(0, 10000);
2009
2010                 wpa_drv_set_countermeasures(wpa_s, 1);
2011                 wpa_supplicant_deauthenticate(wpa_s,
2012                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
2013                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
2014                                      wpa_s, NULL);
2015                 eloop_register_timeout(60, 0,
2016                                        wpa_supplicant_stop_countermeasures,
2017                                        wpa_s, NULL);
2018                 /* TODO: mark the AP rejected for 60 second. STA is
2019                  * allowed to associate with another AP.. */
2020         } else {
2021 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2022                 if (wpa_s->mic_errors_seen) {
2023                         /*
2024                          * Reduce the effectiveness of Michael MIC error
2025                          * reports as a means for attacking against TKIP if
2026                          * more than one MIC failure is noticed with the same
2027                          * PTK. We delay the transmission of the reports by a
2028                          * random time between 0 and 60 seconds in order to
2029                          * force the attacker wait 60 seconds before getting
2030                          * the information on whether a frame resulted in a MIC
2031                          * failure.
2032                          */
2033                         u8 rval[4];
2034                         int sec;
2035
2036                         if (os_get_random(rval, sizeof(rval)) < 0)
2037                                 sec = os_random() % 60;
2038                         else
2039                                 sec = WPA_GET_BE32(rval) % 60;
2040                         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
2041                                 "report %d seconds", sec);
2042                         wpa_s->pending_mic_error_report = 1;
2043                         wpa_s->pending_mic_error_pairwise = pairwise;
2044                         eloop_cancel_timeout(
2045                                 wpa_supplicant_delayed_mic_error_report,
2046                                 wpa_s, NULL);
2047                         eloop_register_timeout(
2048                                 sec, os_random() % 1000000,
2049                                 wpa_supplicant_delayed_mic_error_report,
2050                                 wpa_s, NULL);
2051                 } else {
2052                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2053                 }
2054 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2055                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2056 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2057         }
2058         wpa_s->last_michael_mic_error = t.sec;
2059         wpa_s->mic_errors_seen++;
2060 }
2061
2062
2063 #ifdef CONFIG_TERMINATE_ONLASTIF
2064 static int any_interfaces(struct wpa_supplicant *head)
2065 {
2066         struct wpa_supplicant *wpa_s;
2067
2068         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
2069                 if (!wpa_s->interface_removed)
2070                         return 1;
2071         return 0;
2072 }
2073 #endif /* CONFIG_TERMINATE_ONLASTIF */
2074
2075
2076 static void
2077 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
2078                                       union wpa_event_data *data)
2079 {
2080         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
2081                 return;
2082
2083         switch (data->interface_status.ievent) {
2084         case EVENT_INTERFACE_ADDED:
2085                 if (!wpa_s->interface_removed)
2086                         break;
2087                 wpa_s->interface_removed = 0;
2088                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
2089                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
2090                         wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
2091                                 "driver after interface was added");
2092                 }
2093                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2094                 break;
2095         case EVENT_INTERFACE_REMOVED:
2096                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
2097                 wpa_s->interface_removed = 1;
2098                 wpa_supplicant_mark_disassoc(wpa_s);
2099                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2100                 l2_packet_deinit(wpa_s->l2);
2101                 wpa_s->l2 = NULL;
2102 #ifdef CONFIG_IBSS_RSN
2103                 ibss_rsn_deinit(wpa_s->ibss_rsn);
2104                 wpa_s->ibss_rsn = NULL;
2105 #endif /* CONFIG_IBSS_RSN */
2106 #ifdef CONFIG_TERMINATE_ONLASTIF
2107                 /* check if last interface */
2108                 if (!any_interfaces(wpa_s->global->ifaces))
2109                         eloop_terminate();
2110 #endif /* CONFIG_TERMINATE_ONLASTIF */
2111                 break;
2112         }
2113 }
2114
2115
2116 #ifdef CONFIG_PEERKEY
2117 static void
2118 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
2119                               union wpa_event_data *data)
2120 {
2121         if (data == NULL)
2122                 return;
2123         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
2124 }
2125 #endif /* CONFIG_PEERKEY */
2126
2127
2128 #ifdef CONFIG_TDLS
2129 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
2130                                       union wpa_event_data *data)
2131 {
2132         if (data == NULL)
2133                 return;
2134         switch (data->tdls.oper) {
2135         case TDLS_REQUEST_SETUP:
2136                 wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
2137                 break;
2138         case TDLS_REQUEST_TEARDOWN:
2139                 wpa_tdls_send_teardown(wpa_s->wpa, data->tdls.peer,
2140                                        data->tdls.reason_code);
2141                 break;
2142         }
2143 }
2144 #endif /* CONFIG_TDLS */
2145
2146
2147 #ifdef CONFIG_WNM
2148 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
2149                                      union wpa_event_data *data)
2150 {
2151         if (data == NULL)
2152                 return;
2153         switch (data->wnm.oper) {
2154         case WNM_OPER_SLEEP:
2155                 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
2156                            "(action=%d, intval=%d)",
2157                            data->wnm.sleep_action, data->wnm.sleep_intval);
2158                 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
2159                                              data->wnm.sleep_intval, NULL);
2160                 break;
2161         }
2162 }
2163 #endif /* CONFIG_WNM */
2164
2165
2166 #ifdef CONFIG_IEEE80211R
2167 static void
2168 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
2169                                  union wpa_event_data *data)
2170 {
2171         if (data == NULL)
2172                 return;
2173
2174         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
2175                                     data->ft_ies.ies_len,
2176                                     data->ft_ies.ft_action,
2177                                     data->ft_ies.target_ap,
2178                                     data->ft_ies.ric_ies,
2179                                     data->ft_ies.ric_ies_len) < 0) {
2180                 /* TODO: prevent MLME/driver from trying to associate? */
2181         }
2182 }
2183 #endif /* CONFIG_IEEE80211R */
2184
2185
2186 #ifdef CONFIG_IBSS_RSN
2187 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
2188                                                 union wpa_event_data *data)
2189 {
2190         struct wpa_ssid *ssid;
2191         if (wpa_s->wpa_state < WPA_ASSOCIATED)
2192                 return;
2193         if (data == NULL)
2194                 return;
2195         ssid = wpa_s->current_ssid;
2196         if (ssid == NULL)
2197                 return;
2198         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2199                 return;
2200
2201         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
2202 }
2203 #endif /* CONFIG_IBSS_RSN */
2204
2205
2206 #ifdef CONFIG_IEEE80211R
2207 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
2208                          size_t len)
2209 {
2210         const u8 *sta_addr, *target_ap_addr;
2211         u16 status;
2212
2213         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
2214         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
2215                 return; /* only SME case supported for now */
2216         if (len < 1 + 2 * ETH_ALEN + 2)
2217                 return;
2218         if (data[0] != 2)
2219                 return; /* Only FT Action Response is supported for now */
2220         sta_addr = data + 1;
2221         target_ap_addr = data + 1 + ETH_ALEN;
2222         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
2223         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
2224                 MACSTR " TargetAP " MACSTR " status %u",
2225                 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
2226
2227         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
2228                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
2229                         " in FT Action Response", MAC2STR(sta_addr));
2230                 return;
2231         }
2232
2233         if (status) {
2234                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
2235                         "failure (status code %d)", status);
2236                 /* TODO: report error to FT code(?) */
2237                 return;
2238         }
2239
2240         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
2241                                     len - (1 + 2 * ETH_ALEN + 2), 1,
2242                                     target_ap_addr, NULL, 0) < 0)
2243                 return;
2244
2245 #ifdef CONFIG_SME
2246         {
2247                 struct wpa_bss *bss;
2248                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
2249                 if (bss)
2250                         wpa_s->sme.freq = bss->freq;
2251                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
2252                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
2253                               WLAN_AUTH_FT);
2254         }
2255 #endif /* CONFIG_SME */
2256 }
2257 #endif /* CONFIG_IEEE80211R */
2258
2259
2260 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
2261                                                struct unprot_deauth *e)
2262 {
2263 #ifdef CONFIG_IEEE80211W
2264         wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
2265                    "dropped: " MACSTR " -> " MACSTR
2266                    " (reason code %u)",
2267                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2268         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2269 #endif /* CONFIG_IEEE80211W */
2270 }
2271
2272
2273 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
2274                                                  struct unprot_disassoc *e)
2275 {
2276 #ifdef CONFIG_IEEE80211W
2277         wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
2278                    "dropped: " MACSTR " -> " MACSTR
2279                    " (reason code %u)",
2280                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2281         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2282 #endif /* CONFIG_IEEE80211W */
2283 }
2284
2285
2286 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
2287                           union wpa_event_data *data)
2288 {
2289         struct wpa_supplicant *wpa_s = ctx;
2290         u16 reason_code = 0;
2291         int locally_generated = 0;
2292
2293         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
2294             event != EVENT_INTERFACE_ENABLED &&
2295             event != EVENT_INTERFACE_STATUS &&
2296             event != EVENT_SCHED_SCAN_STOPPED) {
2297                 wpa_dbg(wpa_s, MSG_DEBUG,
2298                         "Ignore event %s (%d) while interface is disabled",
2299                         event_to_string(event), event);
2300                 return;
2301         }
2302
2303 #ifndef CONFIG_NO_STDOUT_DEBUG
2304 {
2305         int level = MSG_DEBUG;
2306
2307         if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
2308                 const struct ieee80211_hdr *hdr;
2309                 u16 fc;
2310                 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
2311                 fc = le_to_host16(hdr->frame_control);
2312                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2313                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
2314                         level = MSG_EXCESSIVE;
2315         }
2316
2317         wpa_dbg(wpa_s, level, "Event %s (%d) received",
2318                 event_to_string(event), event);
2319 }
2320 #endif /* CONFIG_NO_STDOUT_DEBUG */
2321
2322         switch (event) {
2323         case EVENT_AUTH:
2324                 sme_event_auth(wpa_s, data);
2325                 break;
2326         case EVENT_ASSOC:
2327                 wpa_supplicant_event_assoc(wpa_s, data);
2328                 break;
2329         case EVENT_DISASSOC:
2330                 wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
2331                 if (data) {
2332                         wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2333                                 data->disassoc_info.reason_code,
2334                                 data->disassoc_info.locally_generated ?
2335                                 " (locally generated)" : "");
2336                         if (data->disassoc_info.addr)
2337                                 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2338                                         MAC2STR(data->disassoc_info.addr));
2339                 }
2340 #ifdef CONFIG_AP
2341                 if (wpa_s->ap_iface && data && data->disassoc_info.addr) {
2342                         hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
2343                                                data->disassoc_info.addr);
2344                         break;
2345                 }
2346                 if (wpa_s->ap_iface) {
2347                         wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in "
2348                                 "AP mode");
2349                         break;
2350                 }
2351 #endif /* CONFIG_AP */
2352                 if (data) {
2353                         reason_code = data->disassoc_info.reason_code;
2354                         locally_generated =
2355                                 data->disassoc_info.locally_generated;
2356                         wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
2357                                     data->disassoc_info.ie,
2358                                     data->disassoc_info.ie_len);
2359 #ifdef CONFIG_P2P
2360                         wpas_p2p_disassoc_notif(
2361                                 wpa_s, data->disassoc_info.addr, reason_code,
2362                                 data->disassoc_info.ie,
2363                                 data->disassoc_info.ie_len,
2364                                 locally_generated);
2365 #endif /* CONFIG_P2P */
2366                 }
2367                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2368                         sme_event_disassoc(wpa_s, data);
2369                 /* fall through */
2370         case EVENT_DEAUTH:
2371                 if (event == EVENT_DEAUTH) {
2372                         wpa_dbg(wpa_s, MSG_DEBUG,
2373                                 "Deauthentication notification");
2374                         if (data) {
2375                                 reason_code = data->deauth_info.reason_code;
2376                                 locally_generated =
2377                                         data->deauth_info.locally_generated;
2378                                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2379                                         data->deauth_info.reason_code,
2380                                         data->deauth_info.locally_generated ?
2381                                         " (locally generated)" : "");
2382                                 if (data->deauth_info.addr) {
2383                                         wpa_dbg(wpa_s, MSG_DEBUG, " * address "
2384                                                 MACSTR,
2385                                                 MAC2STR(data->deauth_info.
2386                                                         addr));
2387                                 }
2388                                 wpa_hexdump(MSG_DEBUG,
2389                                             "Deauthentication frame IE(s)",
2390                                             data->deauth_info.ie,
2391                                             data->deauth_info.ie_len);
2392                         }
2393                 }
2394 #ifdef CONFIG_AP
2395                 if (wpa_s->ap_iface && data && data->deauth_info.addr) {
2396                         hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
2397                                                data->deauth_info.addr);
2398                         break;
2399                 }
2400                 if (wpa_s->ap_iface) {
2401                         wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in "
2402                                 "AP mode");
2403                         break;
2404                 }
2405 #endif /* CONFIG_AP */
2406                 wpa_supplicant_event_disassoc(wpa_s, reason_code,
2407                                               locally_generated);
2408                 if (reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
2409                     ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
2410                       (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
2411                      eapol_sm_failed(wpa_s->eapol)))
2412                         wpas_auth_failed(wpa_s);
2413 #ifdef CONFIG_P2P
2414                 if (event == EVENT_DEAUTH && data) {
2415                         if (wpas_p2p_deauth_notif(wpa_s,
2416                                                   data->deauth_info.addr,
2417                                                   reason_code,
2418                                                   data->deauth_info.ie,
2419                                                   data->deauth_info.ie_len,
2420                                                   locally_generated) > 0) {
2421                                 /*
2422                                  * The interface was removed, so cannot
2423                                  * continue processing any additional
2424                                  * operations after this.
2425                                  */
2426                                 break;
2427                         }
2428                 }
2429 #endif /* CONFIG_P2P */
2430                 wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
2431                                                      locally_generated);
2432                 break;
2433         case EVENT_MICHAEL_MIC_FAILURE:
2434                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
2435                 break;
2436 #ifndef CONFIG_NO_SCAN_PROCESSING
2437         case EVENT_SCAN_RESULTS:
2438                 wpa_supplicant_event_scan_results(wpa_s, data);
2439 #ifdef CONFIG_P2P
2440         if (wpa_s->global->p2p_cb_on_scan_complete && !wpa_s->global->p2p_disabled &&
2441             wpa_s->global->p2p != NULL &&
2442             wpa_s->wpa_state != WPA_AUTHENTICATING &&
2443             wpa_s->wpa_state != WPA_ASSOCIATING) {
2444                 wpa_s->global->p2p_cb_on_scan_complete = 0;
2445                 if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) {
2446                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation "
2447                                 "continued after scan result processing");
2448                 }
2449         }
2450 #endif /* CONFIG_P2P */
2451                 break;
2452 #endif /* CONFIG_NO_SCAN_PROCESSING */
2453         case EVENT_ASSOCINFO:
2454                 wpa_supplicant_event_associnfo(wpa_s, data);
2455                 break;
2456         case EVENT_INTERFACE_STATUS:
2457                 wpa_supplicant_event_interface_status(wpa_s, data);
2458                 break;
2459         case EVENT_PMKID_CANDIDATE:
2460                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
2461                 break;
2462 #ifdef CONFIG_PEERKEY
2463         case EVENT_STKSTART:
2464                 wpa_supplicant_event_stkstart(wpa_s, data);
2465                 break;
2466 #endif /* CONFIG_PEERKEY */
2467 #ifdef CONFIG_TDLS
2468         case EVENT_TDLS:
2469                 wpa_supplicant_event_tdls(wpa_s, data);
2470                 break;
2471 #endif /* CONFIG_TDLS */
2472 #ifdef CONFIG_WNM
2473         case EVENT_WNM:
2474                 wpa_supplicant_event_wnm(wpa_s, data);
2475                 break;
2476 #endif /* CONFIG_WNM */
2477 #ifdef CONFIG_IEEE80211R
2478         case EVENT_FT_RESPONSE:
2479                 wpa_supplicant_event_ft_response(wpa_s, data);
2480                 break;
2481 #endif /* CONFIG_IEEE80211R */
2482 #ifdef CONFIG_IBSS_RSN
2483         case EVENT_IBSS_RSN_START:
2484                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
2485                 break;
2486 #endif /* CONFIG_IBSS_RSN */
2487         case EVENT_ASSOC_REJECT:
2488                 if (data->assoc_reject.bssid)
2489                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
2490                                 "bssid=" MACSTR " status_code=%u",
2491                                 MAC2STR(data->assoc_reject.bssid),
2492                                 data->assoc_reject.status_code);
2493                 else
2494                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
2495                                 "status_code=%u",
2496                                 data->assoc_reject.status_code);
2497                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2498                         sme_event_assoc_reject(wpa_s, data);
2499                 else {
2500                         const u8 *bssid = data->assoc_reject.bssid;
2501                         if (bssid == NULL || is_zero_ether_addr(bssid))
2502                                 bssid = wpa_s->pending_bssid;
2503                         wpas_connection_failed(wpa_s, bssid);
2504                         wpa_supplicant_mark_disassoc(wpa_s);
2505                 }
2506                 break;
2507         case EVENT_AUTH_TIMED_OUT:
2508                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2509                         sme_event_auth_timed_out(wpa_s, data);
2510                 break;
2511         case EVENT_ASSOC_TIMED_OUT:
2512                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2513                         sme_event_assoc_timed_out(wpa_s, data);
2514                 break;
2515         case EVENT_TX_STATUS:
2516                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
2517                         " type=%d stype=%d",
2518                         MAC2STR(data->tx_status.dst),
2519                         data->tx_status.type, data->tx_status.stype);
2520 #ifdef CONFIG_AP
2521                 if (wpa_s->ap_iface == NULL) {
2522 #ifdef CONFIG_OFFCHANNEL
2523                         if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
2524                             data->tx_status.stype == WLAN_FC_STYPE_ACTION)
2525                                 offchannel_send_action_tx_status(
2526                                         wpa_s, data->tx_status.dst,
2527                                         data->tx_status.data,
2528                                         data->tx_status.data_len,
2529                                         data->tx_status.ack ?
2530                                         OFFCHANNEL_SEND_ACTION_SUCCESS :
2531                                         OFFCHANNEL_SEND_ACTION_NO_ACK);
2532 #endif /* CONFIG_OFFCHANNEL */
2533                         break;
2534                 }
2535 #endif /* CONFIG_AP */
2536 #ifdef CONFIG_OFFCHANNEL
2537                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
2538                         MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
2539                 /*
2540                  * Catch TX status events for Action frames we sent via group
2541                  * interface in GO mode.
2542                  */
2543                 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
2544                     data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
2545                     os_memcmp(wpa_s->parent->pending_action_dst,
2546                               data->tx_status.dst, ETH_ALEN) == 0) {
2547                         offchannel_send_action_tx_status(
2548                                 wpa_s->parent, data->tx_status.dst,
2549                                 data->tx_status.data,
2550                                 data->tx_status.data_len,
2551                                 data->tx_status.ack ?
2552                                 OFFCHANNEL_SEND_ACTION_SUCCESS :
2553                                 OFFCHANNEL_SEND_ACTION_NO_ACK);
2554                         break;
2555                 }
2556 #endif /* CONFIG_OFFCHANNEL */
2557 #ifdef CONFIG_AP
2558                 switch (data->tx_status.type) {
2559                 case WLAN_FC_TYPE_MGMT:
2560                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
2561                                       data->tx_status.data_len,
2562                                       data->tx_status.stype,
2563                                       data->tx_status.ack);
2564                         break;
2565                 case WLAN_FC_TYPE_DATA:
2566                         ap_tx_status(wpa_s, data->tx_status.dst,
2567                                      data->tx_status.data,
2568                                      data->tx_status.data_len,
2569                                      data->tx_status.ack);
2570                         break;
2571                 }
2572 #endif /* CONFIG_AP */
2573                 break;
2574 #ifdef CONFIG_AP
2575         case EVENT_EAPOL_TX_STATUS:
2576                 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
2577                                    data->eapol_tx_status.data,
2578                                    data->eapol_tx_status.data_len,
2579                                    data->eapol_tx_status.ack);
2580                 break;
2581         case EVENT_DRIVER_CLIENT_POLL_OK:
2582                 ap_client_poll_ok(wpa_s, data->client_poll.addr);
2583                 break;
2584         case EVENT_RX_FROM_UNKNOWN:
2585                 if (wpa_s->ap_iface == NULL)
2586                         break;
2587                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
2588                                        data->rx_from_unknown.wds);
2589                 break;
2590         case EVENT_CH_SWITCH:
2591                 if (!data)
2592                         break;
2593                 if (!wpa_s->ap_iface) {
2594                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: Ignore channel switch "
2595                                 "event in non-AP mode");
2596                         break;
2597                 }
2598
2599 #ifdef CONFIG_AP
2600                 wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
2601                                   data->ch_switch.ht_enabled,
2602                                   data->ch_switch.ch_offset);
2603 #endif /* CONFIG_AP */
2604                 break;
2605         case EVENT_RX_MGMT: {
2606                 u16 fc, stype;
2607                 const struct ieee80211_mgmt *mgmt;
2608
2609                 mgmt = (const struct ieee80211_mgmt *)
2610                         data->rx_mgmt.frame;
2611                 fc = le_to_host16(mgmt->frame_control);
2612                 stype = WLAN_FC_GET_STYPE(fc);
2613
2614                 if (wpa_s->ap_iface == NULL) {
2615 #ifdef CONFIG_P2P
2616                         if (stype == WLAN_FC_STYPE_PROBE_REQ &&
2617                             data->rx_mgmt.frame_len > 24) {
2618                                 const u8 *src = mgmt->sa;
2619                                 const u8 *ie = mgmt->u.probe_req.variable;
2620                                 size_t ie_len = data->rx_mgmt.frame_len -
2621                                         (mgmt->u.probe_req.variable -
2622                                          data->rx_mgmt.frame);
2623                                 wpas_p2p_probe_req_rx(
2624                                         wpa_s, src, mgmt->da,
2625                                         mgmt->bssid, ie, ie_len,
2626                                         data->rx_mgmt.ssi_signal);
2627                                 break;
2628                         }
2629 #endif /* CONFIG_P2P */
2630                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
2631                                 "management frame in non-AP mode");
2632                         break;
2633                 }
2634
2635                 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
2636                     data->rx_mgmt.frame_len > 24) {
2637                         const u8 *ie = mgmt->u.probe_req.variable;
2638                         size_t ie_len = data->rx_mgmt.frame_len -
2639                                 (mgmt->u.probe_req.variable -
2640                                  data->rx_mgmt.frame);
2641
2642                         wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
2643                                          mgmt->bssid, ie, ie_len,
2644                                          data->rx_mgmt.ssi_signal);
2645                 }
2646
2647                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
2648                 break;
2649                 }
2650 #endif /* CONFIG_AP */
2651         case EVENT_RX_ACTION:
2652                 wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
2653                         " Category=%u DataLen=%d freq=%d MHz",
2654                         MAC2STR(data->rx_action.sa),
2655                         data->rx_action.category, (int) data->rx_action.len,
2656                         data->rx_action.freq);
2657 #ifdef CONFIG_IEEE80211R
2658                 if (data->rx_action.category == WLAN_ACTION_FT) {
2659                         ft_rx_action(wpa_s, data->rx_action.data,
2660                                      data->rx_action.len);
2661                         break;
2662                 }
2663 #endif /* CONFIG_IEEE80211R */
2664 #ifdef CONFIG_IEEE80211W
2665 #ifdef CONFIG_SME
2666                 if (data->rx_action.category == WLAN_ACTION_SA_QUERY) {
2667                         sme_sa_query_rx(wpa_s, data->rx_action.sa,
2668                                         data->rx_action.data,
2669                                         data->rx_action.len);
2670                         break;
2671                 }
2672 #endif /* CONFIG_SME */
2673 #endif /* CONFIG_IEEE80211W */
2674 #ifdef CONFIG_WNM
2675                 if (data->rx_action.category == WLAN_ACTION_WNM) {
2676                         ieee802_11_rx_wnm_action(wpa_s, &data->rx_action);
2677                         break;
2678                 }
2679 #endif /* CONFIG_WNM */
2680 #ifdef CONFIG_GAS
2681                 if (data->rx_action.category == WLAN_ACTION_PUBLIC &&
2682                     gas_query_rx(wpa_s->gas, data->rx_action.da,
2683                                  data->rx_action.sa, data->rx_action.bssid,
2684                                  data->rx_action.data, data->rx_action.len,
2685                                  data->rx_action.freq) == 0)
2686                         break;
2687 #endif /* CONFIG_GAS */
2688 #ifdef CONFIG_TDLS
2689                 if (data->rx_action.category == WLAN_ACTION_PUBLIC &&
2690                     data->rx_action.len >= 4 &&
2691                     data->rx_action.data[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
2692                         wpa_dbg(wpa_s, MSG_DEBUG, "TDLS: Received Discovery "
2693                                 "Response from " MACSTR,
2694                                 MAC2STR(data->rx_action.sa));
2695                         break;
2696                 }
2697 #endif /* CONFIG_TDLS */
2698 #ifdef CONFIG_P2P
2699                 wpas_p2p_rx_action(wpa_s, data->rx_action.da,
2700                                    data->rx_action.sa,
2701                                    data->rx_action.bssid,
2702                                    data->rx_action.category,
2703                                    data->rx_action.data,
2704                                    data->rx_action.len, data->rx_action.freq);
2705 #endif /* CONFIG_P2P */
2706                 break;
2707         case EVENT_RX_PROBE_REQ:
2708                 if (data->rx_probe_req.sa == NULL ||
2709                     data->rx_probe_req.ie == NULL)
2710                         break;
2711 #ifdef CONFIG_AP
2712                 if (wpa_s->ap_iface) {
2713                         hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
2714                                              data->rx_probe_req.sa,
2715                                              data->rx_probe_req.da,
2716                                              data->rx_probe_req.bssid,
2717                                              data->rx_probe_req.ie,
2718                                              data->rx_probe_req.ie_len,
2719                                              data->rx_probe_req.ssi_signal);
2720                         break;
2721                 }
2722 #endif /* CONFIG_AP */
2723 #ifdef CONFIG_P2P
2724                 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
2725                                       data->rx_probe_req.da,
2726                                       data->rx_probe_req.bssid,
2727                                       data->rx_probe_req.ie,
2728                                       data->rx_probe_req.ie_len,
2729                                       data->rx_probe_req.ssi_signal);
2730 #endif /* CONFIG_P2P */
2731                 break;
2732         case EVENT_REMAIN_ON_CHANNEL:
2733 #ifdef CONFIG_OFFCHANNEL
2734                 offchannel_remain_on_channel_cb(
2735                         wpa_s, data->remain_on_channel.freq,
2736                         data->remain_on_channel.duration);
2737 #endif /* CONFIG_OFFCHANNEL */
2738 #ifdef CONFIG_P2P
2739                 wpas_p2p_remain_on_channel_cb(
2740                         wpa_s, data->remain_on_channel.freq,
2741                         data->remain_on_channel.duration);
2742 #endif /* CONFIG_P2P */
2743                 break;
2744         case EVENT_CANCEL_REMAIN_ON_CHANNEL:
2745 #ifdef CONFIG_OFFCHANNEL
2746                 offchannel_cancel_remain_on_channel_cb(
2747                         wpa_s, data->remain_on_channel.freq);
2748 #endif /* CONFIG_OFFCHANNEL */
2749 #ifdef CONFIG_P2P
2750                 wpas_p2p_cancel_remain_on_channel_cb(
2751                         wpa_s, data->remain_on_channel.freq);
2752 #endif /* CONFIG_P2P */
2753                 break;
2754 #ifdef CONFIG_P2P
2755         case EVENT_P2P_DEV_FOUND: {
2756                 struct p2p_peer_info peer_info;
2757
2758                 os_memset(&peer_info, 0, sizeof(peer_info));
2759                 if (data->p2p_dev_found.dev_addr)
2760                         os_memcpy(peer_info.p2p_device_addr,
2761                                   data->p2p_dev_found.dev_addr, ETH_ALEN);
2762                 if (data->p2p_dev_found.pri_dev_type)
2763                         os_memcpy(peer_info.pri_dev_type,
2764                                   data->p2p_dev_found.pri_dev_type,
2765                                   sizeof(peer_info.pri_dev_type));
2766                 if (data->p2p_dev_found.dev_name)
2767                         os_strlcpy(peer_info.device_name,
2768                                    data->p2p_dev_found.dev_name,
2769                                    sizeof(peer_info.device_name));
2770                 peer_info.config_methods = data->p2p_dev_found.config_methods;
2771                 peer_info.dev_capab = data->p2p_dev_found.dev_capab;
2772                 peer_info.group_capab = data->p2p_dev_found.group_capab;
2773
2774                 /*
2775                  * FIX: new_device=1 is not necessarily correct. We should
2776                  * maintain a P2P peer database in wpa_supplicant and update
2777                  * this information based on whether the peer is truly new.
2778                  */
2779                 wpas_dev_found(wpa_s, data->p2p_dev_found.addr, &peer_info, 1);
2780                 break;
2781                 }
2782         case EVENT_P2P_GO_NEG_REQ_RX:
2783                 wpas_go_neg_req_rx(wpa_s, data->p2p_go_neg_req_rx.src,
2784                                    data->p2p_go_neg_req_rx.dev_passwd_id);
2785                 break;
2786         case EVENT_P2P_GO_NEG_COMPLETED:
2787                 wpas_go_neg_completed(wpa_s, data->p2p_go_neg_completed.res);
2788                 break;
2789         case EVENT_P2P_PROV_DISC_REQUEST:
2790                 wpas_prov_disc_req(wpa_s, data->p2p_prov_disc_req.peer,
2791                                    data->p2p_prov_disc_req.config_methods,
2792                                    data->p2p_prov_disc_req.dev_addr,
2793                                    data->p2p_prov_disc_req.pri_dev_type,
2794                                    data->p2p_prov_disc_req.dev_name,
2795                                    data->p2p_prov_disc_req.supp_config_methods,
2796                                    data->p2p_prov_disc_req.dev_capab,
2797                                    data->p2p_prov_disc_req.group_capab,
2798                                    NULL, 0);
2799                 break;
2800         case EVENT_P2P_PROV_DISC_RESPONSE:
2801                 wpas_prov_disc_resp(wpa_s, data->p2p_prov_disc_resp.peer,
2802                                     data->p2p_prov_disc_resp.config_methods);
2803                 break;
2804         case EVENT_P2P_SD_REQUEST:
2805                 wpas_sd_request(wpa_s, data->p2p_sd_req.freq,
2806                                 data->p2p_sd_req.sa,
2807                                 data->p2p_sd_req.dialog_token,
2808                                 data->p2p_sd_req.update_indic,
2809                                 data->p2p_sd_req.tlvs,
2810                                 data->p2p_sd_req.tlvs_len);
2811                 break;
2812         case EVENT_P2P_SD_RESPONSE:
2813                 wpas_sd_response(wpa_s, data->p2p_sd_resp.sa,
2814                                  data->p2p_sd_resp.update_indic,
2815                                  data->p2p_sd_resp.tlvs,
2816                                  data->p2p_sd_resp.tlvs_len);
2817                 break;
2818 #endif /* CONFIG_P2P */
2819         case EVENT_EAPOL_RX:
2820                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
2821                                         data->eapol_rx.data,
2822                                         data->eapol_rx.data_len);
2823                 break;
2824         case EVENT_SIGNAL_CHANGE:
2825                 bgscan_notify_signal_change(
2826                         wpa_s, data->signal_change.above_threshold,
2827                         data->signal_change.current_signal,
2828                         data->signal_change.current_noise,
2829                         data->signal_change.current_txrate);
2830                 break;
2831         case EVENT_INTERFACE_ENABLED:
2832                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
2833                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
2834                         wpa_supplicant_update_mac_addr(wpa_s);
2835 #ifdef CONFIG_AP
2836                         if (!wpa_s->ap_iface) {
2837                                 wpa_supplicant_set_state(wpa_s,
2838                                                          WPA_DISCONNECTED);
2839                                 wpa_supplicant_req_scan(wpa_s, 0, 0);
2840                         } else
2841                                 wpa_supplicant_set_state(wpa_s,
2842                                                          WPA_COMPLETED);
2843 #else /* CONFIG_AP */
2844                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2845                         wpa_supplicant_req_scan(wpa_s, 0, 0);
2846 #endif /* CONFIG_AP */
2847                 }
2848                 break;
2849         case EVENT_INTERFACE_DISABLED:
2850                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
2851                 wpa_supplicant_mark_disassoc(wpa_s);
2852                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2853                 break;
2854         case EVENT_CHANNEL_LIST_CHANGED:
2855                 if (wpa_s->drv_priv == NULL)
2856                         break; /* Ignore event during drv initialization */
2857
2858                 free_hw_features(wpa_s);
2859                 wpa_s->hw.modes = wpa_drv_get_hw_feature_data(
2860                         wpa_s, &wpa_s->hw.num_modes, &wpa_s->hw.flags);
2861
2862 #ifdef CONFIG_P2P
2863                 wpas_p2p_update_channel_list(wpa_s);
2864 #endif /* CONFIG_P2P */
2865                 break;
2866         case EVENT_INTERFACE_UNAVAILABLE:
2867 #ifdef CONFIG_P2P
2868                 wpas_p2p_interface_unavailable(wpa_s);
2869 #endif /* CONFIG_P2P */
2870                 break;
2871         case EVENT_BEST_CHANNEL:
2872                 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
2873                         "(%d %d %d)",
2874                         data->best_chan.freq_24, data->best_chan.freq_5,
2875                         data->best_chan.freq_overall);
2876                 wpa_s->best_24_freq = data->best_chan.freq_24;
2877                 wpa_s->best_5_freq = data->best_chan.freq_5;
2878                 wpa_s->best_overall_freq = data->best_chan.freq_overall;
2879 #ifdef CONFIG_P2P
2880                 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
2881                                               data->best_chan.freq_5,
2882                                               data->best_chan.freq_overall);
2883 #endif /* CONFIG_P2P */
2884                 break;
2885         case EVENT_UNPROT_DEAUTH:
2886                 wpa_supplicant_event_unprot_deauth(wpa_s,
2887                                                    &data->unprot_deauth);
2888                 break;
2889         case EVENT_UNPROT_DISASSOC:
2890                 wpa_supplicant_event_unprot_disassoc(wpa_s,
2891                                                      &data->unprot_disassoc);
2892                 break;
2893         case EVENT_STATION_LOW_ACK:
2894 #ifdef CONFIG_AP
2895                 if (wpa_s->ap_iface && data)
2896                         hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
2897                                                   data->low_ack.addr);
2898 #endif /* CONFIG_AP */
2899 #ifdef CONFIG_TDLS
2900                 if (data)
2901                         wpa_tdls_disable_link(wpa_s->wpa, data->low_ack.addr);
2902 #endif /* CONFIG_TDLS */
2903                 break;
2904         case EVENT_IBSS_PEER_LOST:
2905 #ifdef CONFIG_IBSS_RSN
2906                 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
2907 #endif /* CONFIG_IBSS_RSN */
2908                 break;
2909         case EVENT_DRIVER_GTK_REKEY:
2910                 if (os_memcmp(data->driver_gtk_rekey.bssid,
2911                               wpa_s->bssid, ETH_ALEN))
2912                         break;
2913                 if (!wpa_s->wpa)
2914                         break;
2915                 wpa_sm_update_replay_ctr(wpa_s->wpa,
2916                                          data->driver_gtk_rekey.replay_ctr);
2917                 break;
2918         case EVENT_SCHED_SCAN_STOPPED:
2919                 wpa_s->sched_scanning = 0;
2920                 wpa_supplicant_notify_scanning(wpa_s, 0);
2921
2922                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
2923                         break;
2924
2925                 /*
2926                  * If we timed out, start a new sched scan to continue
2927                  * searching for more SSIDs.
2928                  */
2929                 if (wpa_s->sched_scan_timed_out)
2930                         wpa_supplicant_req_sched_scan(wpa_s);
2931                 break;
2932         case EVENT_WPS_BUTTON_PUSHED:
2933 #ifdef CONFIG_WPS
2934                 wpas_wps_start_pbc(wpa_s, NULL, 0);
2935 #endif /* CONFIG_WPS */
2936                 break;
2937         default:
2938                 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
2939                 break;
2940         }
2941 }