wpa_supplicant/events.c

   1 /*
   2  * WPA Supplicant - Driver event processing
   3  * Copyright (c) 2003-2014, 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 #ifndef CONFIG_NO_SCAN_PROCESSING
  48 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
  49                                               int new_scan, int own_request);
  50 #endif /* CONFIG_NO_SCAN_PROCESSING */
  51
  52
  53 static int wpas_temp_disabled(struct wpa_supplicant *wpa_s,
  54                               struct wpa_ssid *ssid)
  55 {
  56         struct os_reltime now;
  57
  58         if (ssid == NULL || ssid->disabled_until.sec == 0)
  59                 return 0;
  60
  61         os_get_reltime(&now);
  62         if (ssid->disabled_until.sec > now.sec)
  63                 return ssid->disabled_until.sec - now.sec;
  64
  65         wpas_clear_temp_disabled(wpa_s, ssid, 0);
  66
  67         return 0;
  68 }
  69
  70
  71 static struct wpa_bss * wpa_supplicant_get_new_bss(
  72         struct wpa_supplicant *wpa_s, const u8 *bssid)
  73 {
  74         struct wpa_bss *bss = NULL;
  75         struct wpa_ssid *ssid = wpa_s->current_ssid;
  76
  77         if (ssid->ssid_len > 0)
  78                 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
  79         if (!bss)
  80                 bss = wpa_bss_get_bssid(wpa_s, bssid);
  81
  82         return bss;
  83 }
  84
  85
  86 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
  87 {
  88         struct wpa_ssid *ssid, *old_ssid;
  89         struct wpa_bss *bss;
  90         int res;
  91
  92         if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid)
  93                 return 0;
  94
  95         wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
  96                 "information");
  97         ssid = wpa_supplicant_get_ssid(wpa_s);
  98         if (ssid == NULL) {
  99                 wpa_msg(wpa_s, MSG_INFO,
 100                         "No network configuration found for the current AP");
 101                 return -1;
 102         }
 103
 104         if (wpas_network_disabled(wpa_s, ssid)) {
 105                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
 106                 return -1;
 107         }
 108
 109         if (disallowed_bssid(wpa_s, wpa_s->bssid) ||
 110             disallowed_ssid(wpa_s, ssid->ssid, ssid->ssid_len)) {
 111                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS is disallowed");
 112                 return -1;
 113         }
 114
 115         res = wpas_temp_disabled(wpa_s, ssid);
 116         if (res > 0) {
 117                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is temporarily "
 118                         "disabled for %d second(s)", res);
 119                 return -1;
 120         }
 121
 122         wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
 123                 "current AP");
 124         if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
 125                 u8 wpa_ie[80];
 126                 size_t wpa_ie_len = sizeof(wpa_ie);
 127                 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
 128                                               wpa_ie, &wpa_ie_len) < 0)
 129                         wpa_dbg(wpa_s, MSG_DEBUG, "Could not set WPA suites");
 130         } else {
 131                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
 132         }
 133
 134         if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
 135                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
 136         old_ssid = wpa_s->current_ssid;
 137         wpa_s->current_ssid = ssid;
 138
 139         bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
 140         if (!bss) {
 141                 wpa_supplicant_update_scan_results(wpa_s);
 142
 143                 /* Get the BSS from the new scan results */
 144                 bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
 145         }
 146
 147         if (bss)
 148                 wpa_s->current_bss = bss;
 149
 150         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
 151         wpa_supplicant_initiate_eapol(wpa_s);
 152         if (old_ssid != wpa_s->current_ssid)
 153                 wpas_notify_network_changed(wpa_s);
 154
 155         return 0;
 156 }
 157
 158
 159 void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx)
 160 {
 161         struct wpa_supplicant *wpa_s = eloop_ctx;
 162
 163         if (wpa_s->countermeasures) {
 164                 wpa_s->countermeasures = 0;
 165                 wpa_drv_set_countermeasures(wpa_s, 0);
 166                 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
 167                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 168         }
 169 }
 170
 171
 172 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
 173 {
 174         int bssid_changed;
 175
 176         wnm_bss_keep_alive_deinit(wpa_s);
 177
 178 #ifdef CONFIG_IBSS_RSN
 179         ibss_rsn_deinit(wpa_s->ibss_rsn);
 180         wpa_s->ibss_rsn = NULL;
 181 #endif /* CONFIG_IBSS_RSN */
 182
 183 #ifdef CONFIG_AP
 184         wpa_supplicant_ap_deinit(wpa_s);
 185 #endif /* CONFIG_AP */
 186
 187         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
 188                 return;
 189
 190         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 191         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 192         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 193         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 194 #ifdef CONFIG_SME
 195         wpa_s->sme.prev_bssid_set = 0;
 196 #endif /* CONFIG_SME */
 197 #ifdef CONFIG_P2P
 198         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
 199 #endif /* CONFIG_P2P */
 200         wpa_s->current_bss = NULL;
 201         wpa_s->assoc_freq = 0;
 202 #ifdef CONFIG_IEEE80211R
 203 #ifdef CONFIG_SME
 204         if (wpa_s->sme.ft_ies)
 205                 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
 206 #endif /* CONFIG_SME */
 207 #endif /* CONFIG_IEEE80211R */
 208
 209         if (bssid_changed)
 210                 wpas_notify_bssid_changed(wpa_s);
 211
 212         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
 213         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 214         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
 215                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 216         wpa_s->ap_ies_from_associnfo = 0;
 217         wpa_s->current_ssid = NULL;
 218         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 219         wpa_s->key_mgmt = 0;
 220 }
 221
 222
 223 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
 224 {
 225         struct wpa_ie_data ie;
 226         int pmksa_set = -1;
 227         size_t i;
 228
 229         if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
 230             ie.pmkid == NULL)
 231                 return;
 232
 233         for (i = 0; i < ie.num_pmkid; i++) {
 234                 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
 235                                                     ie.pmkid + i * PMKID_LEN,
 236                                                     NULL, NULL, 0);
 237                 if (pmksa_set == 0) {
 238                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
 239                         break;
 240                 }
 241         }
 242
 243         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
 244                 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
 245 }
 246
 247
 248 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
 249                                                  union wpa_event_data *data)
 250 {
 251         if (data == NULL) {
 252                 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
 253                         "event");
 254                 return;
 255         }
 256         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
 257                 " index=%d preauth=%d",
 258                 MAC2STR(data->pmkid_candidate.bssid),
 259                 data->pmkid_candidate.index,
 260                 data->pmkid_candidate.preauth);
 261
 262         pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
 263                             data->pmkid_candidate.index,
 264                             data->pmkid_candidate.preauth);
 265 }
 266
 267
 268 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
 269 {
 270         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 271             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
 272                 return 0;
 273
 274 #ifdef IEEE8021X_EAPOL
 275         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
 276             wpa_s->current_ssid &&
 277             !(wpa_s->current_ssid->eapol_flags &
 278               (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 279                EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
 280                 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
 281                  * plaintext or static WEP keys). */
 282                 return 0;
 283         }
 284 #endif /* IEEE8021X_EAPOL */
 285
 286         return 1;
 287 }
 288
 289
 290 /**
 291  * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
 292  * @wpa_s: pointer to wpa_supplicant data
 293  * @ssid: Configuration data for the network
 294  * Returns: 0 on success, -1 on failure
 295  *
 296  * This function is called when starting authentication with a network that is
 297  * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
 298  */
 299 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 300                               struct wpa_ssid *ssid)
 301 {
 302 #ifdef IEEE8021X_EAPOL
 303 #ifdef PCSC_FUNCS
 304         int aka = 0, sim = 0;
 305
 306         if (ssid->eap.pcsc == NULL || wpa_s->scard != NULL ||
 307             wpa_s->conf->external_sim)
 308                 return 0;
 309
 310         if (ssid->eap.eap_methods == NULL) {
 311                 sim = 1;
 312                 aka = 1;
 313         } else {
 314                 struct eap_method_type *eap = ssid->eap.eap_methods;
 315                 while (eap->vendor != EAP_VENDOR_IETF ||
 316                        eap->method != EAP_TYPE_NONE) {
 317                         if (eap->vendor == EAP_VENDOR_IETF) {
 318                                 if (eap->method == EAP_TYPE_SIM)
 319                                         sim = 1;
 320                                 else if (eap->method == EAP_TYPE_AKA ||
 321                                          eap->method == EAP_TYPE_AKA_PRIME)
 322                                         aka = 1;
 323                         }
 324                         eap++;
 325                 }
 326         }
 327
 328         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
 329                 sim = 0;
 330         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL &&
 331             eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME) ==
 332             NULL)
 333                 aka = 0;
 334
 335         if (!sim && !aka) {
 336                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
 337                         "use SIM, but neither EAP-SIM nor EAP-AKA are "
 338                         "enabled");
 339                 return 0;
 340         }
 341
 342         wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
 343                 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
 344
 345         wpa_s->scard = scard_init(NULL);
 346         if (wpa_s->scard == NULL) {
 347                 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
 348                         "(pcsc-lite)");
 349                 return -1;
 350         }
 351         wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
 352         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
 353 #endif /* PCSC_FUNCS */
 354 #endif /* IEEE8021X_EAPOL */
 355
 356         return 0;
 357 }
 358
 359
 360 #ifndef CONFIG_NO_SCAN_PROCESSING
 361
 362 static int has_wep_key(struct wpa_ssid *ssid)
 363 {
 364         int i;
 365
 366         for (i = 0; i < NUM_WEP_KEYS; i++) {
 367                 if (ssid->wep_key_len[i])
 368                         return 1;
 369         }
 370
 371         return 0;
 372 }
 373
 374
 375 static int wpa_supplicant_match_privacy(struct wpa_bss *bss,
 376                                         struct wpa_ssid *ssid)
 377 {
 378         int privacy = 0;
 379
 380         if (ssid->mixed_cell)
 381                 return 1;
 382
 383 #ifdef CONFIG_WPS
 384         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
 385                 return 1;
 386 #endif /* CONFIG_WPS */
 387
 388         if (has_wep_key(ssid))
 389                 privacy = 1;
 390
 391 #ifdef IEEE8021X_EAPOL
 392         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
 393             ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 394                                  EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
 395                 privacy = 1;
 396 #endif /* IEEE8021X_EAPOL */
 397
 398         if (wpa_key_mgmt_wpa(ssid->key_mgmt))
 399                 privacy = 1;
 400
 401         if (ssid->key_mgmt & WPA_KEY_MGMT_OSEN)
 402                 privacy = 1;
 403
 404         if (bss->caps & IEEE80211_CAP_PRIVACY)
 405                 return privacy;
 406         return !privacy;
 407 }
 408
 409
 410 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
 411                                          struct wpa_ssid *ssid,
 412                                          struct wpa_bss *bss)
 413 {
 414         struct wpa_ie_data ie;
 415         int proto_match = 0;
 416         const u8 *rsn_ie, *wpa_ie;
 417         int ret;
 418         int wep_ok;
 419
 420         ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
 421         if (ret >= 0)
 422                 return ret;
 423
 424         /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
 425         wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 426                 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 427                   ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
 428                  (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
 429
 430         rsn_ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 431         while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
 432                 proto_match++;
 433
 434                 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
 435                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - parse "
 436                                 "failed");
 437                         break;
 438                 }
 439
 440                 if (wep_ok &&
 441                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 442                 {
 443                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 444                                 "in RSN IE");
 445                         return 1;
 446                 }
 447
 448                 if (!(ie.proto & ssid->proto)) {
 449                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - proto "
 450                                 "mismatch");
 451                         break;
 452                 }
 453
 454                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 455                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - PTK "
 456                                 "cipher mismatch");
 457                         break;
 458                 }
 459
 460                 if (!(ie.group_cipher & ssid->group_cipher)) {
 461                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - GTK "
 462                                 "cipher mismatch");
 463                         break;
 464                 }
 465
 466                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 467                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - key mgmt "
 468                                 "mismatch");
 469                         break;
 470                 }
 471
 472 #ifdef CONFIG_IEEE80211W
 473                 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
 474                     (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
 475                      wpa_s->conf->pmf : ssid->ieee80211w) ==
 476                     MGMT_FRAME_PROTECTION_REQUIRED) {
 477                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - no mgmt "
 478                                 "frame protection");
 479                         break;
 480                 }
 481 #endif /* CONFIG_IEEE80211W */
 482
 483                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on RSN IE");
 484                 return 1;
 485         }
 486
 487         wpa_ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 488         while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
 489                 proto_match++;
 490
 491                 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
 492                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - parse "
 493                                 "failed");
 494                         break;
 495                 }
 496
 497                 if (wep_ok &&
 498                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 499                 {
 500                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 501                                 "in WPA IE");
 502                         return 1;
 503                 }
 504
 505                 if (!(ie.proto & ssid->proto)) {
 506                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - proto "
 507                                 "mismatch");
 508                         break;
 509                 }
 510
 511                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 512                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - PTK "
 513                                 "cipher mismatch");
 514                         break;
 515                 }
 516
 517                 if (!(ie.group_cipher & ssid->group_cipher)) {
 518                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - GTK "
 519                                 "cipher mismatch");
 520                         break;
 521                 }
 522
 523                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 524                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - key mgmt "
 525                                 "mismatch");
 526                         break;
 527                 }
 528
 529                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on WPA IE");
 530                 return 1;
 531         }
 532
 533         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && !wpa_ie &&
 534             !rsn_ie) {
 535                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow for non-WPA IEEE 802.1X");
 536                 return 1;
 537         }
 538
 539         if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
 540             wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
 541                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no WPA/RSN proto match");
 542                 return 0;
 543         }
 544
 545         if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) &&
 546             wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE)) {
 547                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in OSEN");
 548                 return 1;
 549         }
 550
 551         if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
 552                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in non-WPA/WPA2");
 553                 return 1;
 554         }
 555
 556         wpa_dbg(wpa_s, MSG_DEBUG, "   reject due to mismatch with "
 557                 "WPA/WPA2");
 558
 559         return 0;
 560 }
 561
 562
 563 static int freq_allowed(int *freqs, int freq)
 564 {
 565         int i;
 566
 567         if (freqs == NULL)
 568                 return 1;
 569
 570         for (i = 0; freqs[i]; i++)
 571                 if (freqs[i] == freq)
 572                         return 1;
 573         return 0;
 574 }
 575
 576
 577 static int ht_supported(const struct hostapd_hw_modes *mode)
 578 {
 579         if (!(mode->flags & HOSTAPD_MODE_FLAG_HT_INFO_KNOWN)) {
 580                 /*
 581                  * The driver did not indicate whether it supports HT. Assume
 582                  * it does to avoid connection issues.
 583                  */
 584                 return 1;
 585         }
 586
 587         /*
 588          * IEEE Std 802.11n-2009 20.1.1:
 589          * An HT non-AP STA shall support all EQM rates for one spatial stream.
 590          */
 591         return mode->mcs_set[0] == 0xff;
 592 }
 593
 594
 595 static int vht_supported(const struct hostapd_hw_modes *mode)
 596 {
 597         if (!(mode->flags & HOSTAPD_MODE_FLAG_VHT_INFO_KNOWN)) {
 598                 /*
 599                  * The driver did not indicate whether it supports VHT. Assume
 600                  * it does to avoid connection issues.
 601                  */
 602                 return 1;
 603         }
 604
 605         /*
 606          * A VHT non-AP STA shall support MCS 0-7 for one spatial stream.
 607          * TODO: Verify if this complies with the standard
 608          */
 609         return (mode->vht_mcs_set[0] & 0x3) != 3;
 610 }
 611
 612
 613 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
 614 {
 615         const struct hostapd_hw_modes *mode = NULL, *modes;
 616         const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES };
 617         const u8 *rate_ie;
 618         int i, j, k;
 619
 620         if (bss->freq == 0)
 621                 return 1; /* Cannot do matching without knowing band */
 622
 623         modes = wpa_s->hw.modes;
 624         if (modes == NULL) {
 625                 /*
 626                  * The driver does not provide any additional information
 627                  * about the utilized hardware, so allow the connection attempt
 628                  * to continue.
 629                  */
 630                 return 1;
 631         }
 632
 633         for (i = 0; i < wpa_s->hw.num_modes; i++) {
 634                 for (j = 0; j < modes[i].num_channels; j++) {
 635                         int freq = modes[i].channels[j].freq;
 636                         if (freq == bss->freq) {
 637                                 if (mode &&
 638                                     mode->mode == HOSTAPD_MODE_IEEE80211G)
 639                                         break; /* do not allow 802.11b replace
 640                                                 * 802.11g */
 641                                 mode = &modes[i];
 642                                 break;
 643                         }
 644                 }
 645         }
 646
 647         if (mode == NULL)
 648                 return 0;
 649
 650         for (i = 0; i < (int) sizeof(scan_ie); i++) {
 651                 rate_ie = wpa_bss_get_ie(bss, scan_ie[i]);
 652                 if (rate_ie == NULL)
 653                         continue;
 654
 655                 for (j = 2; j < rate_ie[1] + 2; j++) {
 656                         int flagged = !!(rate_ie[j] & 0x80);
 657                         int r = (rate_ie[j] & 0x7f) * 5;
 658
 659                         /*
 660                          * IEEE Std 802.11n-2009 7.3.2.2:
 661                          * The new BSS Membership selector value is encoded
 662                          * like a legacy basic rate, but it is not a rate and
 663                          * only indicates if the BSS members are required to
 664                          * support the mandatory features of Clause 20 [HT PHY]
 665                          * in order to join the BSS.
 666                          */
 667                         if (flagged && ((rate_ie[j] & 0x7f) ==
 668                                         BSS_MEMBERSHIP_SELECTOR_HT_PHY)) {
 669                                 if (!ht_supported(mode)) {
 670                                         wpa_dbg(wpa_s, MSG_DEBUG,
 671                                                 "   hardware does not support "
 672                                                 "HT PHY");
 673                                         return 0;
 674                                 }
 675                                 continue;
 676                         }
 677
 678                         /* There's also a VHT selector for 802.11ac */
 679                         if (flagged && ((rate_ie[j] & 0x7f) ==
 680                                         BSS_MEMBERSHIP_SELECTOR_VHT_PHY)) {
 681                                 if (!vht_supported(mode)) {
 682                                         wpa_dbg(wpa_s, MSG_DEBUG,
 683                                                 "   hardware does not support "
 684                                                 "VHT PHY");
 685                                         return 0;
 686                                 }
 687                                 continue;
 688                         }
 689
 690                         if (!flagged)
 691                                 continue;
 692
 693                         /* check for legacy basic rates */
 694                         for (k = 0; k < mode->num_rates; k++) {
 695                                 if (mode->rates[k] == r)
 696                                         break;
 697                         }
 698                         if (k == mode->num_rates) {
 699                                 /*
 700                                  * IEEE Std 802.11-2007 7.3.2.2 demands that in
 701                                  * order to join a BSS all required rates
 702                                  * have to be supported by the hardware.
 703                                  */
 704                                 wpa_dbg(wpa_s, MSG_DEBUG, "   hardware does "
 705                                         "not support required rate %d.%d Mbps",
 706                                         r / 10, r % 10);
 707                                 return 0;
 708                         }
 709                 }
 710         }
 711
 712         return 1;
 713 }
 714
 715
 716 static int bss_is_dmg(struct wpa_bss *bss)
 717 {
 718         return bss->freq > 45000;
 719 }
 720
 721
 722 /*
 723  * Test whether BSS is in an ESS.
 724  * This is done differently in DMG (60 GHz) and non-DMG bands
 725  */
 726 static int bss_is_ess(struct wpa_bss *bss)
 727 {
 728         if (bss_is_dmg(bss)) {
 729                 return (bss->caps & IEEE80211_CAP_DMG_MASK) ==
 730                         IEEE80211_CAP_DMG_AP;
 731         }
 732
 733         return ((bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) ==
 734                 IEEE80211_CAP_ESS);
 735 }
 736
 737
 738 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
 739                                             int i, struct wpa_bss *bss,
 740                                             struct wpa_ssid *group,
 741                                             int only_first_ssid)
 742 {
 743         u8 wpa_ie_len, rsn_ie_len;
 744         int wpa;
 745         struct wpa_blacklist *e;
 746         const u8 *ie;
 747         struct wpa_ssid *ssid;
 748         int osen;
 749
 750         ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 751         wpa_ie_len = ie ? ie[1] : 0;
 752
 753         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 754         rsn_ie_len = ie ? ie[1] : 0;
 755
 756         ie = wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE);
 757         osen = ie != NULL;
 758
 759         wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
 760                 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s%s%s",
 761                 i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len),
 762                 wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
 763                 wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "",
 764                 (wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) ||
 765                  wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) ?
 766                 " p2p" : "",
 767                 osen ? " osen=1" : "");
 768
 769         e = wpa_blacklist_get(wpa_s, bss->bssid);
 770         if (e) {
 771                 int limit = 1;
 772                 if (wpa_supplicant_enabled_networks(wpa_s) == 1) {
 773                         /*
 774                          * When only a single network is enabled, we can
 775                          * trigger blacklisting on the first failure. This
 776                          * should not be done with multiple enabled networks to
 777                          * avoid getting forced to move into a worse ESS on
 778                          * single error if there are no other BSSes of the
 779                          * current ESS.
 780                          */
 781                         limit = 0;
 782                 }
 783                 if (e->count > limit) {
 784                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 785                                 "(count=%d limit=%d)", e->count, limit);
 786                         return NULL;
 787                 }
 788         }
 789
 790         if (bss->ssid_len == 0) {
 791                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID not known");
 792                 return NULL;
 793         }
 794
 795         if (disallowed_bssid(wpa_s, bss->bssid)) {
 796                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID disallowed");
 797                 return NULL;
 798         }
 799
 800         if (disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
 801                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID disallowed");
 802                 return NULL;
 803         }
 804
 805         wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
 806
 807         for (ssid = group; ssid; ssid = only_first_ssid ? NULL : ssid->pnext) {
 808                 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
 809                 int res;
 810
 811                 if (wpas_network_disabled(wpa_s, ssid)) {
 812                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled");
 813                         continue;
 814                 }
 815
 816                 res = wpas_temp_disabled(wpa_s, ssid);
 817                 if (res > 0) {
 818                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled "
 819                                 "temporarily for %d second(s)", res);
 820                         continue;
 821                 }
 822
 823 #ifdef CONFIG_WPS
 824                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
 825                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 826                                 "(WPS)");
 827                         continue;
 828                 }
 829
 830                 if (wpa && ssid->ssid_len == 0 &&
 831                     wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 832                         check_ssid = 0;
 833
 834                 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 835                         /* Only allow wildcard SSID match if an AP
 836                          * advertises active WPS operation that matches
 837                          * with our mode. */
 838                         check_ssid = 1;
 839                         if (ssid->ssid_len == 0 &&
 840                             wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 841                                 check_ssid = 0;
 842                 }
 843 #endif /* CONFIG_WPS */
 844
 845                 if (ssid->bssid_set && ssid->ssid_len == 0 &&
 846                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
 847                         check_ssid = 0;
 848
 849                 if (check_ssid &&
 850                     (bss->ssid_len != ssid->ssid_len ||
 851                      os_memcmp(bss->ssid, ssid->ssid, bss->ssid_len) != 0)) {
 852                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID mismatch");
 853                         continue;
 854                 }
 855
 856                 if (ssid->bssid_set &&
 857                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
 858                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID mismatch");
 859                         continue;
 860                 }
 861
 862                 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
 863                         continue;
 864
 865                 if (!osen && !wpa &&
 866                     !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 867                     !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
 868                     !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
 869                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-WPA network "
 870                                 "not allowed");
 871                         continue;
 872                 }
 873
 874                 if (wpa && !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 875                     has_wep_key(ssid)) {
 876                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - ignore WPA/WPA2 AP for WEP network block");
 877                         continue;
 878                 }
 879
 880                 if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) && !osen) {
 881                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-OSEN network "
 882                                 "not allowed");
 883                         continue;
 884                 }
 885
 886                 if (!wpa_supplicant_match_privacy(bss, ssid)) {
 887                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - privacy "
 888                                 "mismatch");
 889                         continue;
 890                 }
 891
 892                 if (!bss_is_ess(bss)) {
 893                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - not ESS network");
 894                         continue;
 895                 }
 896
 897                 if (!freq_allowed(ssid->freq_list, bss->freq)) {
 898                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - frequency not "
 899                                 "allowed");
 900                         continue;
 901                 }
 902
 903                 if (!rate_match(wpa_s, bss)) {
 904                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - rate sets do "
 905                                 "not match");
 906                         continue;
 907                 }
 908
 909 #ifdef CONFIG_P2P
 910                 if (ssid->p2p_group &&
 911                     !wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 912                     !wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 913                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P IE seen");
 914                         continue;
 915                 }
 916
 917                 if (!is_zero_ether_addr(ssid->go_p2p_dev_addr)) {
 918                         struct wpabuf *p2p_ie;
 919                         u8 dev_addr[ETH_ALEN];
 920
 921                         ie = wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE);
 922                         if (ie == NULL) {
 923                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P element");
 924                                 continue;
 925                         }
 926                         p2p_ie = wpa_bss_get_vendor_ie_multi(
 927                                 bss, P2P_IE_VENDOR_TYPE);
 928                         if (p2p_ie == NULL) {
 929                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - could not fetch P2P element");
 930                                 continue;
 931                         }
 932
 933                         if (p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr) < 0
 934                             || os_memcmp(dev_addr, ssid->go_p2p_dev_addr,
 935                                          ETH_ALEN) != 0) {
 936                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no matching GO P2P Device Address in P2P element");
 937                                 wpabuf_free(p2p_ie);
 938                                 continue;
 939                         }
 940                         wpabuf_free(p2p_ie);
 941                 }
 942
 943                 /*
 944                  * TODO: skip the AP if its P2P IE has Group Formation
 945                  * bit set in the P2P Group Capability Bitmap and we
 946                  * are not in Group Formation with that device.
 947                  */
 948 #endif /* CONFIG_P2P */
 949
 950                 /* Matching configuration found */
 951                 return ssid;
 952         }
 953
 954         /* No matching configuration found */
 955         return NULL;
 956 }
 957
 958
 959 static struct wpa_bss *
 960 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
 961                           struct wpa_ssid *group,
 962                           struct wpa_ssid **selected_ssid,
 963                           int only_first_ssid)
 964 {
 965         unsigned int i;
 966
 967         if (only_first_ssid)
 968                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to find BSS matching pre-selected network id=%d",
 969                         group->id);
 970         else
 971                 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
 972                         group->priority);
 973
 974         for (i = 0; i < wpa_s->last_scan_res_used; i++) {
 975                 struct wpa_bss *bss = wpa_s->last_scan_res[i];
 976                 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group,
 977                                                     only_first_ssid);
 978                 if (!*selected_ssid)
 979                         continue;
 980                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected BSS " MACSTR
 981                         " ssid='%s'",
 982                         MAC2STR(bss->bssid),
 983                         wpa_ssid_txt(bss->ssid, bss->ssid_len));
 984                 return bss;
 985         }
 986
 987         return NULL;
 988 }
 989
 990
 991 struct wpa_bss * wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
 992                                              struct wpa_ssid **selected_ssid)
 993 {
 994         struct wpa_bss *selected = NULL;
 995         int prio;
 996         struct wpa_ssid *next_ssid = NULL;
 997
 998         if (wpa_s->last_scan_res == NULL ||
 999             wpa_s->last_scan_res_used == 0)
1000                 return NULL; /* no scan results from last update */
1001
1002         if (wpa_s->next_ssid) {
1003                 struct wpa_ssid *ssid;
1004
1005                 /* check that next_ssid is still valid */
1006                 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1007                         if (ssid == wpa_s->next_ssid)
1008                                 break;
1009                 }
1010                 next_ssid = ssid;
1011                 wpa_s->next_ssid = NULL;
1012         }
1013
1014         while (selected == NULL) {
1015                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1016                         if (next_ssid && next_ssid->priority ==
1017                             wpa_s->conf->pssid[prio]->priority) {
1018                                 selected = wpa_supplicant_select_bss(
1019                                         wpa_s, next_ssid, selected_ssid, 1);
1020                                 if (selected)
1021                                         break;
1022                         }
1023                         selected = wpa_supplicant_select_bss(
1024                                 wpa_s, wpa_s->conf->pssid[prio],
1025                                 selected_ssid, 0);
1026                         if (selected)
1027                                 break;
1028                 }
1029
1030                 if (selected == NULL && wpa_s->blacklist &&
1031                     !wpa_s->countermeasures) {
1032                         wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
1033                                 "blacklist and try again");
1034                         wpa_blacklist_clear(wpa_s);
1035                         wpa_s->blacklist_cleared++;
1036                 } else if (selected == NULL)
1037                         break;
1038         }
1039
1040         return selected;
1041 }
1042
1043
1044 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
1045                                         int timeout_sec, int timeout_usec)
1046 {
1047         if (!wpa_supplicant_enabled_networks(wpa_s)) {
1048                 /*
1049                  * No networks are enabled; short-circuit request so
1050                  * we don't wait timeout seconds before transitioning
1051                  * to INACTIVE state.
1052                  */
1053                 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request "
1054                         "since there are no enabled networks");
1055                 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
1056                 return;
1057         }
1058
1059         wpa_s->scan_for_connection = 1;
1060         wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
1061 }
1062
1063
1064 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
1065                            struct wpa_bss *selected,
1066                            struct wpa_ssid *ssid)
1067 {
1068         if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
1069                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
1070                         "PBC session overlap");
1071 #ifdef CONFIG_P2P
1072                 if (wpas_p2p_notif_pbc_overlap(wpa_s) == 1)
1073                         return -1;
1074 #endif /* CONFIG_P2P */
1075
1076 #ifdef CONFIG_WPS
1077                 wpas_wps_cancel(wpa_s);
1078 #endif /* CONFIG_WPS */
1079                 return -1;
1080         }
1081
1082         wpa_msg(wpa_s, MSG_DEBUG,
1083                 "Considering connect request: reassociate: %d  selected: "
1084                 MACSTR "  bssid: " MACSTR "  pending: " MACSTR
1085                 "  wpa_state: %s  ssid=%p  current_ssid=%p",
1086                 wpa_s->reassociate, MAC2STR(selected->bssid),
1087                 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
1088                 wpa_supplicant_state_txt(wpa_s->wpa_state),
1089                 ssid, wpa_s->current_ssid);
1090
1091         /*
1092          * Do not trigger new association unless the BSSID has changed or if
1093          * reassociation is requested. If we are in process of associating with
1094          * the selected BSSID, do not trigger new attempt.
1095          */
1096         if (wpa_s->reassociate ||
1097             (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
1098              ((wpa_s->wpa_state != WPA_ASSOCIATING &&
1099                wpa_s->wpa_state != WPA_AUTHENTICATING) ||
1100               (!is_zero_ether_addr(wpa_s->pending_bssid) &&
1101                os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
1102                0) ||
1103               (is_zero_ether_addr(wpa_s->pending_bssid) &&
1104                ssid != wpa_s->current_ssid)))) {
1105                 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
1106                         wpa_supplicant_req_new_scan(wpa_s, 10, 0);
1107                         return 0;
1108                 }
1109                 wpa_msg(wpa_s, MSG_DEBUG, "Request association with " MACSTR,
1110                         MAC2STR(selected->bssid));
1111                 wpa_supplicant_associate(wpa_s, selected, ssid);
1112         } else {
1113                 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated or trying to "
1114                         "connect with the selected AP");
1115         }
1116
1117         return 0;
1118 }
1119
1120
1121 static struct wpa_ssid *
1122 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
1123 {
1124         int prio;
1125         struct wpa_ssid *ssid;
1126
1127         for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1128                 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
1129                 {
1130                         if (wpas_network_disabled(wpa_s, ssid))
1131                                 continue;
1132                         if (ssid->mode == IEEE80211_MODE_IBSS ||
1133                             ssid->mode == IEEE80211_MODE_AP)
1134                                 return ssid;
1135                 }
1136         }
1137         return NULL;
1138 }
1139
1140
1141 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
1142  * on BSS added and BSS changed events */
1143 static void wpa_supplicant_rsn_preauth_scan_results(
1144         struct wpa_supplicant *wpa_s)
1145 {
1146         struct wpa_bss *bss;
1147
1148         if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
1149                 return;
1150
1151         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1152                 const u8 *ssid, *rsn;
1153
1154                 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
1155                 if (ssid == NULL)
1156                         continue;
1157
1158                 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1159                 if (rsn == NULL)
1160                         continue;
1161
1162                 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
1163         }
1164
1165 }
1166
1167
1168 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
1169                                        struct wpa_bss *selected,
1170                                        struct wpa_ssid *ssid)
1171 {
1172         struct wpa_bss *current_bss = NULL;
1173         int min_diff;
1174
1175         if (wpa_s->reassociate)
1176                 return 1; /* explicit request to reassociate */
1177         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1178                 return 1; /* we are not associated; continue */
1179         if (wpa_s->current_ssid == NULL)
1180                 return 1; /* unknown current SSID */
1181         if (wpa_s->current_ssid != ssid)
1182                 return 1; /* different network block */
1183
1184         if (wpas_driver_bss_selection(wpa_s))
1185                 return 0; /* Driver-based roaming */
1186
1187         if (wpa_s->current_ssid->ssid)
1188                 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid,
1189                                           wpa_s->current_ssid->ssid,
1190                                           wpa_s->current_ssid->ssid_len);
1191         if (!current_bss)
1192                 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
1193
1194         if (!current_bss)
1195                 return 1; /* current BSS not seen in scan results */
1196
1197         if (current_bss == selected)
1198                 return 0;
1199
1200         if (selected->last_update_idx > current_bss->last_update_idx)
1201                 return 1; /* current BSS not seen in the last scan */
1202
1203 #ifndef CONFIG_NO_ROAMING
1204         wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
1205         wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
1206                 MAC2STR(current_bss->bssid), current_bss->level);
1207         wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
1208                 MAC2STR(selected->bssid), selected->level);
1209
1210         if (wpa_s->current_ssid->bssid_set &&
1211             os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
1212             0) {
1213                 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
1214                         "has preferred BSSID");
1215                 return 1;
1216         }
1217
1218         if (current_bss->level < 0 && current_bss->level > selected->level) {
1219                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better "
1220                         "signal level");
1221                 return 0;
1222         }
1223
1224         min_diff = 2;
1225         if (current_bss->level < 0) {
1226                 if (current_bss->level < -85)
1227                         min_diff = 1;
1228                 else if (current_bss->level < -80)
1229                         min_diff = 2;
1230                 else if (current_bss->level < -75)
1231                         min_diff = 3;
1232                 else if (current_bss->level < -70)
1233                         min_diff = 4;
1234                 else
1235                         min_diff = 5;
1236         }
1237         if (abs(current_bss->level - selected->level) < min_diff) {
1238                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
1239                         "in signal level");
1240                 return 0;
1241         }
1242
1243         return 1;
1244 #else /* CONFIG_NO_ROAMING */
1245         return 0;
1246 #endif /* CONFIG_NO_ROAMING */
1247 }
1248
1249
1250 /* Return != 0 if no scan results could be fetched or if scan results should not
1251  * be shared with other virtual interfaces. */
1252 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1253                                               union wpa_event_data *data,
1254                                               int own_request)
1255 {
1256         struct wpa_scan_results *scan_res = NULL;
1257         int ret = 0;
1258         int ap = 0;
1259 #ifndef CONFIG_NO_RANDOM_POOL
1260         size_t i, num;
1261 #endif /* CONFIG_NO_RANDOM_POOL */
1262
1263 #ifdef CONFIG_AP
1264         if (wpa_s->ap_iface)
1265                 ap = 1;
1266 #endif /* CONFIG_AP */
1267
1268         wpa_supplicant_notify_scanning(wpa_s, 0);
1269
1270         scan_res = wpa_supplicant_get_scan_results(wpa_s,
1271                                                    data ? &data->scan_info :
1272                                                    NULL, 1);
1273         if (scan_res == NULL) {
1274                 if (wpa_s->conf->ap_scan == 2 || ap ||
1275                     wpa_s->scan_res_handler == scan_only_handler)
1276                         return -1;
1277                 if (!own_request)
1278                         return -1;
1279                 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1280                         "scanning again");
1281                 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1282                 ret = -1;
1283                 goto scan_work_done;
1284         }
1285
1286 #ifndef CONFIG_NO_RANDOM_POOL
1287         num = scan_res->num;
1288         if (num > 10)
1289                 num = 10;
1290         for (i = 0; i < num; i++) {
1291                 u8 buf[5];
1292                 struct wpa_scan_res *res = scan_res->res[i];
1293                 buf[0] = res->bssid[5];
1294                 buf[1] = res->qual & 0xff;
1295                 buf[2] = res->noise & 0xff;
1296                 buf[3] = res->level & 0xff;
1297                 buf[4] = res->tsf & 0xff;
1298                 random_add_randomness(buf, sizeof(buf));
1299         }
1300 #endif /* CONFIG_NO_RANDOM_POOL */
1301
1302         if (own_request && wpa_s->scan_res_handler &&
1303             (wpa_s->own_scan_running || !wpa_s->external_scan_running)) {
1304                 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1305                                          struct wpa_scan_results *scan_res);
1306
1307                 scan_res_handler = wpa_s->scan_res_handler;
1308                 wpa_s->scan_res_handler = NULL;
1309                 scan_res_handler(wpa_s, scan_res);
1310                 ret = -2;
1311                 goto scan_work_done;
1312         }
1313
1314         if (ap) {
1315                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1316 #ifdef CONFIG_AP
1317                 if (wpa_s->ap_iface->scan_cb)
1318                         wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1319 #endif /* CONFIG_AP */
1320                 goto scan_work_done;
1321         }
1322
1323         wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available (own=%u ext=%u)",
1324                 wpa_s->own_scan_running, wpa_s->external_scan_running);
1325         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
1326             wpa_s->manual_scan_use_id && wpa_s->own_scan_running) {
1327                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS "id=%u",
1328                              wpa_s->manual_scan_id);
1329                 wpa_s->manual_scan_use_id = 0;
1330         } else {
1331                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1332         }
1333         wpas_notify_scan_results(wpa_s);
1334
1335         wpas_notify_scan_done(wpa_s, 1);
1336
1337         if (!wpa_s->own_scan_running && wpa_s->external_scan_running) {
1338                 wpa_dbg(wpa_s, MSG_DEBUG, "Do not use results from externally requested scan operation for network selection");
1339                 wpa_scan_results_free(scan_res);
1340                 return 0;
1341         }
1342
1343         if (sme_proc_obss_scan(wpa_s) > 0)
1344                 goto scan_work_done;
1345
1346         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s)))
1347                 goto scan_work_done;
1348
1349         if (autoscan_notify_scan(wpa_s, scan_res))
1350                 goto scan_work_done;
1351
1352         if (wpa_s->disconnected) {
1353                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1354                 goto scan_work_done;
1355         }
1356
1357         if (!wpas_driver_bss_selection(wpa_s) &&
1358             bgscan_notify_scan(wpa_s, scan_res) == 1)
1359                 goto scan_work_done;
1360
1361         wpas_wps_update_ap_info(wpa_s, scan_res);
1362
1363         wpa_scan_results_free(scan_res);
1364
1365         if (wpa_s->scan_work) {
1366                 struct wpa_radio_work *work = wpa_s->scan_work;
1367                 wpa_s->scan_work = NULL;
1368                 radio_work_done(work);
1369         }
1370
1371         return wpas_select_network_from_last_scan(wpa_s, 1, own_request);
1372
1373 scan_work_done:
1374         wpa_scan_results_free(scan_res);
1375         if (wpa_s->scan_work) {
1376                 struct wpa_radio_work *work = wpa_s->scan_work;
1377                 wpa_s->scan_work = NULL;
1378                 radio_work_done(work);
1379         }
1380         return ret;
1381 }
1382
1383
1384 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
1385                                               int new_scan, int own_request)
1386 {
1387         struct wpa_bss *selected;
1388         struct wpa_ssid *ssid = NULL;
1389
1390         selected = wpa_supplicant_pick_network(wpa_s, &ssid);
1391
1392         if (selected) {
1393                 int skip;
1394                 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid);
1395                 if (skip) {
1396                         if (new_scan)
1397                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1398                         return 0;
1399                 }
1400
1401                 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1402                         wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1403                         return -1;
1404                 }
1405                 if (new_scan)
1406                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1407                 /*
1408                  * Do not notify other virtual radios of scan results since we do not
1409                  * want them to start other associations at the same time.
1410                  */
1411                 return 1;
1412         } else {
1413                 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1414                 ssid = wpa_supplicant_pick_new_network(wpa_s);
1415                 if (ssid) {
1416                         wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1417                         wpa_supplicant_associate(wpa_s, NULL, ssid);
1418                         if (new_scan)
1419                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1420                 } else if (own_request) {
1421                         /*
1422                          * No SSID found. If SCAN results are as a result of
1423                          * own scan request and not due to a scan request on
1424                          * another shared interface, try another scan.
1425                          */
1426                         int timeout_sec = wpa_s->scan_interval;
1427                         int timeout_usec = 0;
1428 #ifdef CONFIG_P2P
1429                         if (wpas_p2p_scan_no_go_seen(wpa_s) == 1)
1430                                 return 0;
1431
1432                         if (wpa_s->p2p_in_provisioning ||
1433                             wpa_s->show_group_started) {
1434                                 /*
1435                                  * Use shorter wait during P2P Provisioning
1436                                  * state and during P2P join-a-group operation
1437                                  * to speed up group formation.
1438                                  */
1439                                 timeout_sec = 0;
1440                                 timeout_usec = 250000;
1441                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1442                                                             timeout_usec);
1443                                 return 0;
1444                         }
1445 #endif /* CONFIG_P2P */
1446 #ifdef CONFIG_INTERWORKING
1447                         if (wpa_s->conf->auto_interworking &&
1448                             wpa_s->conf->interworking &&
1449                             wpa_s->conf->cred) {
1450                                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: "
1451                                         "start ANQP fetch since no matching "
1452                                         "networks found");
1453                                 wpa_s->network_select = 1;
1454                                 wpa_s->auto_network_select = 1;
1455                                 interworking_start_fetch_anqp(wpa_s);
1456                                 return 1;
1457                         }
1458 #endif /* CONFIG_INTERWORKING */
1459 #ifdef CONFIG_WPS
1460                         if (wpa_s->after_wps > 0 || wpas_wps_searching(wpa_s)) {
1461                                 wpa_dbg(wpa_s, MSG_DEBUG, "Use shorter wait during WPS processing");
1462                                 timeout_sec = 0;
1463                                 timeout_usec = 500000;
1464                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1465                                                             timeout_usec);
1466                                 return 0;
1467                         }
1468 #endif /* CONFIG_WPS */
1469                         if (wpa_supplicant_req_sched_scan(wpa_s))
1470                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1471                                                             timeout_usec);
1472                 }
1473         }
1474         return 0;
1475 }
1476
1477
1478 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1479                                               union wpa_event_data *data)
1480 {
1481         struct wpa_supplicant *ifs;
1482
1483         if (_wpa_supplicant_event_scan_results(wpa_s, data, 1) != 0) {
1484                 /*
1485                  * If no scan results could be fetched, then no need to
1486                  * notify those interfaces that did not actually request
1487                  * this scan. Similarly, if scan results started a new operation on this
1488                  * interface, do not notify other interfaces to avoid concurrent
1489                  * operations during a connection attempt.
1490                  */
1491                 return;
1492         }
1493
1494         /*
1495          * Check other interfaces to see if they share the same radio. If
1496          * so, they get updated with this same scan info.
1497          */
1498         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
1499                          radio_list) {
1500                 if (ifs != wpa_s) {
1501                         wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1502                                    "sibling", ifs->ifname);
1503                         _wpa_supplicant_event_scan_results(ifs, data, 0);
1504                 }
1505         }
1506 }
1507
1508 #endif /* CONFIG_NO_SCAN_PROCESSING */
1509
1510
1511 int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s)
1512 {
1513 #ifdef CONFIG_NO_SCAN_PROCESSING
1514         return -1;
1515 #else /* CONFIG_NO_SCAN_PROCESSING */
1516         struct os_reltime now;
1517
1518         if (wpa_s->last_scan_res_used <= 0)
1519                 return -1;
1520
1521         os_get_reltime(&now);
1522         if (os_reltime_expired(&now, &wpa_s->last_scan, 5)) {
1523                 wpa_printf(MSG_DEBUG, "Fast associate: Old scan results");
1524                 return -1;
1525         }
1526
1527         return wpas_select_network_from_last_scan(wpa_s, 0, 1);
1528 #endif /* CONFIG_NO_SCAN_PROCESSING */
1529 }
1530
1531 #ifdef CONFIG_WNM
1532
1533 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx)
1534 {
1535         struct wpa_supplicant *wpa_s = eloop_ctx;
1536
1537         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1538                 return;
1539
1540         if (!wpa_s->no_keep_alive) {
1541                 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR,
1542                            MAC2STR(wpa_s->bssid));
1543                 /* TODO: could skip this if normal data traffic has been sent */
1544                 /* TODO: Consider using some more appropriate data frame for
1545                  * this */
1546                 if (wpa_s->l2)
1547                         l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800,
1548                                        (u8 *) "", 0);
1549         }
1550
1551 #ifdef CONFIG_SME
1552         if (wpa_s->sme.bss_max_idle_period) {
1553                 unsigned int msec;
1554                 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */
1555                 if (msec > 100)
1556                         msec -= 100;
1557                 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1558                                        wnm_bss_keep_alive, wpa_s, NULL);
1559         }
1560 #endif /* CONFIG_SME */
1561 }
1562
1563
1564 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s,
1565                                    const u8 *ies, size_t ies_len)
1566 {
1567         struct ieee802_11_elems elems;
1568
1569         if (ies == NULL)
1570                 return;
1571
1572         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1573                 return;
1574
1575 #ifdef CONFIG_SME
1576         if (elems.bss_max_idle_period) {
1577                 unsigned int msec;
1578                 wpa_s->sme.bss_max_idle_period =
1579                         WPA_GET_LE16(elems.bss_max_idle_period);
1580                 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 "
1581                            "TU)%s", wpa_s->sme.bss_max_idle_period,
1582                            (elems.bss_max_idle_period[2] & 0x01) ?
1583                            " (protected keep-live required)" : "");
1584                 if (wpa_s->sme.bss_max_idle_period == 0)
1585                         wpa_s->sme.bss_max_idle_period = 1;
1586                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
1587                         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1588                          /* msec times 1000 */
1589                         msec = wpa_s->sme.bss_max_idle_period * 1024;
1590                         if (msec > 100)
1591                                 msec -= 100;
1592                         eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1593                                                wnm_bss_keep_alive, wpa_s,
1594                                                NULL);
1595                 }
1596         }
1597 #endif /* CONFIG_SME */
1598 }
1599
1600 #endif /* CONFIG_WNM */
1601
1602
1603 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s)
1604 {
1605 #ifdef CONFIG_WNM
1606         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1607 #endif /* CONFIG_WNM */
1608 }
1609
1610
1611 #ifdef CONFIG_INTERWORKING
1612
1613 static int wpas_qos_map_set(struct wpa_supplicant *wpa_s, const u8 *qos_map,
1614                             size_t len)
1615 {
1616         int res;
1617
1618         wpa_hexdump(MSG_DEBUG, "Interworking: QoS Map Set", qos_map, len);
1619         res = wpa_drv_set_qos_map(wpa_s, qos_map, len);
1620         if (res) {
1621                 wpa_printf(MSG_DEBUG, "Interworking: Failed to configure QoS Map Set to the driver");
1622         }
1623
1624         return res;
1625 }
1626
1627
1628 static void interworking_process_assoc_resp(struct wpa_supplicant *wpa_s,
1629                                             const u8 *ies, size_t ies_len)
1630 {
1631         struct ieee802_11_elems elems;
1632
1633         if (ies == NULL)
1634                 return;
1635
1636         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1637                 return;
1638
1639         if (elems.qos_map_set) {
1640                 wpas_qos_map_set(wpa_s, elems.qos_map_set,
1641                                  elems.qos_map_set_len);
1642         }
1643 }
1644
1645 #endif /* CONFIG_INTERWORKING */
1646
1647
1648 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1649                                           union wpa_event_data *data)
1650 {
1651         int l, len, found = 0, wpa_found, rsn_found;
1652         const u8 *p;
1653 #ifdef CONFIG_IEEE80211R
1654         u8 bssid[ETH_ALEN];
1655 #endif /* CONFIG_IEEE80211R */
1656
1657         wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1658         if (data->assoc_info.req_ies)
1659                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1660                             data->assoc_info.req_ies_len);
1661         if (data->assoc_info.resp_ies) {
1662                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1663                             data->assoc_info.resp_ies_len);
1664 #ifdef CONFIG_TDLS
1665                 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1666                                         data->assoc_info.resp_ies_len);
1667 #endif /* CONFIG_TDLS */
1668 #ifdef CONFIG_WNM
1669                 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1670                                        data->assoc_info.resp_ies_len);
1671 #endif /* CONFIG_WNM */
1672 #ifdef CONFIG_INTERWORKING
1673                 interworking_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1674                                                 data->assoc_info.resp_ies_len);
1675 #endif /* CONFIG_INTERWORKING */
1676         }
1677         if (data->assoc_info.beacon_ies)
1678                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1679                             data->assoc_info.beacon_ies,
1680                             data->assoc_info.beacon_ies_len);
1681         if (data->assoc_info.freq)
1682                 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1683                         data->assoc_info.freq);
1684
1685         p = data->assoc_info.req_ies;
1686         l = data->assoc_info.req_ies_len;
1687
1688         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1689         while (p && l >= 2) {
1690                 len = p[1] + 2;
1691                 if (len > l) {
1692                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1693                                     p, l);
1694                         break;
1695                 }
1696                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1697                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1698                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1699                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1700                                 break;
1701                         found = 1;
1702                         wpa_find_assoc_pmkid(wpa_s);
1703                         break;
1704                 }
1705                 l -= len;
1706                 p += len;
1707         }
1708         if (!found && data->assoc_info.req_ies)
1709                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1710
1711 #ifdef CONFIG_IEEE80211R
1712 #ifdef CONFIG_SME
1713         if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1714                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1715                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1716                                                  data->assoc_info.resp_ies,
1717                                                  data->assoc_info.resp_ies_len,
1718                                                  bssid) < 0) {
1719                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1720                                 "Reassociation Response failed");
1721                         wpa_supplicant_deauthenticate(
1722                                 wpa_s, WLAN_REASON_INVALID_IE);
1723                         return -1;
1724                 }
1725         }
1726
1727         p = data->assoc_info.resp_ies;
1728         l = data->assoc_info.resp_ies_len;
1729
1730 #ifdef CONFIG_WPS_STRICT
1731         if (p && wpa_s->current_ssid &&
1732             wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1733                 struct wpabuf *wps;
1734                 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1735                 if (wps == NULL) {
1736                         wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1737                                 "include WPS IE in (Re)Association Response");
1738                         return -1;
1739                 }
1740
1741                 if (wps_validate_assoc_resp(wps) < 0) {
1742                         wpabuf_free(wps);
1743                         wpa_supplicant_deauthenticate(
1744                                 wpa_s, WLAN_REASON_INVALID_IE);
1745                         return -1;
1746                 }
1747                 wpabuf_free(wps);
1748         }
1749 #endif /* CONFIG_WPS_STRICT */
1750
1751         /* Go through the IEs and make a copy of the MDIE, if present. */
1752         while (p && l >= 2) {
1753                 len = p[1] + 2;
1754                 if (len > l) {
1755                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1756                                     p, l);
1757                         break;
1758                 }
1759                 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1760                     p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1761                         wpa_s->sme.ft_used = 1;
1762                         os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1763                                   MOBILITY_DOMAIN_ID_LEN);
1764                         break;
1765                 }
1766                 l -= len;
1767                 p += len;
1768         }
1769 #endif /* CONFIG_SME */
1770
1771         /* Process FT when SME is in the driver */
1772         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
1773             wpa_ft_is_completed(wpa_s->wpa)) {
1774                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1775                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1776                                                  data->assoc_info.resp_ies,
1777                                                  data->assoc_info.resp_ies_len,
1778                                                  bssid) < 0) {
1779                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1780                                 "Reassociation Response failed");
1781                         wpa_supplicant_deauthenticate(
1782                                 wpa_s, WLAN_REASON_INVALID_IE);
1783                         return -1;
1784                 }
1785                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Reassociation Response done");
1786         }
1787
1788         wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1789                              data->assoc_info.resp_ies_len);
1790 #endif /* CONFIG_IEEE80211R */
1791
1792         /* WPA/RSN IE from Beacon/ProbeResp */
1793         p = data->assoc_info.beacon_ies;
1794         l = data->assoc_info.beacon_ies_len;
1795
1796         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1797          */
1798         wpa_found = rsn_found = 0;
1799         while (p && l >= 2) {
1800                 len = p[1] + 2;
1801                 if (len > l) {
1802                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1803                                     p, l);
1804                         break;
1805                 }
1806                 if (!wpa_found &&
1807                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1808                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1809                         wpa_found = 1;
1810                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1811                 }
1812
1813                 if (!rsn_found &&
1814                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
1815                         rsn_found = 1;
1816                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1817                 }
1818
1819                 l -= len;
1820                 p += len;
1821         }
1822
1823         if (!wpa_found && data->assoc_info.beacon_ies)
1824                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1825         if (!rsn_found && data->assoc_info.beacon_ies)
1826                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1827         if (wpa_found || rsn_found)
1828                 wpa_s->ap_ies_from_associnfo = 1;
1829
1830         if (wpa_s->assoc_freq && data->assoc_info.freq &&
1831             wpa_s->assoc_freq != data->assoc_info.freq) {
1832                 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
1833                            "%u to %u MHz",
1834                            wpa_s->assoc_freq, data->assoc_info.freq);
1835                 wpa_supplicant_update_scan_results(wpa_s);
1836         }
1837
1838         wpa_s->assoc_freq = data->assoc_info.freq;
1839
1840         return 0;
1841 }
1842
1843
1844 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
1845 {
1846         const u8 *bss_wpa = NULL, *bss_rsn = NULL;
1847
1848         if (!wpa_s->current_bss || !wpa_s->current_ssid)
1849                 return -1;
1850
1851         if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
1852                 return 0;
1853
1854         bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
1855                                         WPA_IE_VENDOR_TYPE);
1856         bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
1857
1858         if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
1859                                  bss_wpa ? 2 + bss_wpa[1] : 0) ||
1860             wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
1861                                  bss_rsn ? 2 + bss_rsn[1] : 0))
1862                 return -1;
1863
1864         return 0;
1865 }
1866
1867
1868 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1869                                        union wpa_event_data *data)
1870 {
1871         u8 bssid[ETH_ALEN];
1872         int ft_completed;
1873
1874 #ifdef CONFIG_AP
1875         if (wpa_s->ap_iface) {
1876                 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1877                                     data->assoc_info.addr,
1878                                     data->assoc_info.req_ies,
1879                                     data->assoc_info.req_ies_len,
1880                                     data->assoc_info.reassoc);
1881                 return;
1882         }
1883 #endif /* CONFIG_AP */
1884
1885         ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1886         if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1887                 return;
1888
1889         if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
1890                 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID");
1891                 wpa_supplicant_deauthenticate(
1892                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1893                 return;
1894         }
1895
1896         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1897         if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
1898                 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1899                         MACSTR, MAC2STR(bssid));
1900                 random_add_randomness(bssid, ETH_ALEN);
1901                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1902                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1903                 wpas_notify_bssid_changed(wpa_s);
1904
1905                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1906                         wpa_clear_keys(wpa_s, bssid);
1907                 }
1908                 if (wpa_supplicant_select_config(wpa_s) < 0) {
1909                         wpa_supplicant_deauthenticate(
1910                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1911                         return;
1912                 }
1913
1914                 if (wpa_s->conf->ap_scan == 1 &&
1915                     wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
1916                         if (wpa_supplicant_assoc_update_ie(wpa_s) < 0)
1917                                 wpa_msg(wpa_s, MSG_WARNING,
1918                                         "WPA/RSN IEs not updated");
1919                 }
1920         }
1921
1922 #ifdef CONFIG_SME
1923         os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1924         wpa_s->sme.prev_bssid_set = 1;
1925 #endif /* CONFIG_SME */
1926
1927         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1928         if (wpa_s->current_ssid) {
1929                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1930                  * initialized before association, but for other modes,
1931                  * initialize PC/SC here, if the current configuration needs
1932                  * smartcard or SIM/USIM. */
1933                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1934         }
1935         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1936         if (wpa_s->l2)
1937                 l2_packet_notify_auth_start(wpa_s->l2);
1938
1939         /*
1940          * Set portEnabled first to FALSE in order to get EAP state machine out
1941          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1942          * state machine may transit to AUTHENTICATING state based on obsolete
1943          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1944          * AUTHENTICATED without ever giving chance to EAP state machine to
1945          * reset the state.
1946          */
1947         if (!ft_completed) {
1948                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1949                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1950         }
1951         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1952                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1953         /* 802.1X::portControl = Auto */
1954         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1955         wpa_s->eapol_received = 0;
1956         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1957             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1958             (wpa_s->current_ssid &&
1959              wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1960                 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE &&
1961                     (wpa_s->drv_flags &
1962                      WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
1963                         /*
1964                          * Set the key after having received joined-IBSS event
1965                          * from the driver.
1966                          */
1967                         wpa_supplicant_set_wpa_none_key(wpa_s,
1968                                                         wpa_s->current_ssid);
1969                 }
1970                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1971                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1972         } else if (!ft_completed) {
1973                 /* Timeout for receiving the first EAPOL packet */
1974                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1975         }
1976         wpa_supplicant_cancel_scan(wpa_s);
1977
1978         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1979             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1980                 /*
1981                  * We are done; the driver will take care of RSN 4-way
1982                  * handshake.
1983                  */
1984                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1985                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1986                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1987                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1988         } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1989                    wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1990                 /*
1991                  * The driver will take care of RSN 4-way handshake, so we need
1992                  * to allow EAPOL supplicant to complete its work without
1993                  * waiting for WPA supplicant.
1994                  */
1995                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1996         } else if (ft_completed) {
1997                 /*
1998                  * FT protocol completed - make sure EAPOL state machine ends
1999                  * up in authenticated.
2000                  */
2001                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2002                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2003                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2004                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2005         }
2006
2007         wpa_s->last_eapol_matches_bssid = 0;
2008
2009         if (wpa_s->pending_eapol_rx) {
2010                 struct os_reltime now, age;
2011                 os_get_reltime(&now);
2012                 os_reltime_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
2013                 if (age.sec == 0 && age.usec < 100000 &&
2014                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
2015                     0) {
2016                         wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
2017                                 "frame that was received just before "
2018                                 "association notification");
2019                         wpa_supplicant_rx_eapol(
2020                                 wpa_s, wpa_s->pending_eapol_rx_src,
2021                                 wpabuf_head(wpa_s->pending_eapol_rx),
2022                                 wpabuf_len(wpa_s->pending_eapol_rx));
2023                 }
2024                 wpabuf_free(wpa_s->pending_eapol_rx);
2025                 wpa_s->pending_eapol_rx = NULL;
2026         }
2027
2028         if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2029              wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
2030             wpa_s->current_ssid &&
2031             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2032                 /* Set static WEP keys again */
2033                 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
2034         }
2035
2036 #ifdef CONFIG_IBSS_RSN
2037         if (wpa_s->current_ssid &&
2038             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
2039             wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
2040             wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
2041             wpa_s->ibss_rsn == NULL) {
2042                 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
2043                 if (!wpa_s->ibss_rsn) {
2044                         wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
2045                         wpa_supplicant_deauthenticate(
2046                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2047                         return;
2048                 }
2049
2050                 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
2051         }
2052 #endif /* CONFIG_IBSS_RSN */
2053
2054         wpas_wps_notify_assoc(wpa_s, bssid);
2055 }
2056
2057
2058 static int disconnect_reason_recoverable(u16 reason_code)
2059 {
2060         return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
2061                 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
2062                 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
2063 }
2064
2065
2066 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
2067                                           u16 reason_code,
2068                                           int locally_generated)
2069 {
2070         const u8 *bssid;
2071
2072         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2073                 /*
2074                  * At least Host AP driver and a Prism3 card seemed to be
2075                  * generating streams of disconnected events when configuring
2076                  * IBSS for WPA-None. Ignore them for now.
2077                  */
2078                 return;
2079         }
2080
2081         bssid = wpa_s->bssid;
2082         if (is_zero_ether_addr(bssid))
2083                 bssid = wpa_s->pending_bssid;
2084
2085         if (!is_zero_ether_addr(bssid) ||
2086             wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2087                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
2088                         " reason=%d%s",
2089                         MAC2STR(bssid), reason_code,
2090                         locally_generated ? " locally_generated=1" : "");
2091         }
2092 }
2093
2094
2095 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code,
2096                                  int locally_generated)
2097 {
2098         if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE ||
2099             !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
2100                 return 0; /* Not in 4-way handshake with PSK */
2101
2102         /*
2103          * It looks like connection was lost while trying to go through PSK
2104          * 4-way handshake. Filter out known disconnection cases that are caused
2105          * by something else than PSK mismatch to avoid confusing reports.
2106          */
2107
2108         if (locally_generated) {
2109                 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS)
2110                         return 0;
2111         }
2112
2113         return 1;
2114 }
2115
2116
2117 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s,
2118                                                  u16 reason_code,
2119                                                  int locally_generated)
2120 {
2121         const u8 *bssid;
2122         int authenticating;
2123         u8 prev_pending_bssid[ETH_ALEN];
2124         struct wpa_bss *fast_reconnect = NULL;
2125         struct wpa_ssid *fast_reconnect_ssid = NULL;
2126         struct wpa_ssid *last_ssid;
2127
2128         authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
2129         os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
2130
2131         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2132                 /*
2133                  * At least Host AP driver and a Prism3 card seemed to be
2134                  * generating streams of disconnected events when configuring
2135                  * IBSS for WPA-None. Ignore them for now.
2136                  */
2137                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
2138                         "IBSS/WPA-None mode");
2139                 return;
2140         }
2141
2142         if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) {
2143                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
2144                         "pre-shared key may be incorrect");
2145                 if (wpas_p2p_4way_hs_failed(wpa_s) > 0)
2146                         return; /* P2P group removed */
2147                 wpas_auth_failed(wpa_s);
2148         }
2149         if (!wpa_s->disconnected &&
2150             (!wpa_s->auto_reconnect_disabled ||
2151              wpa_s->key_mgmt == WPA_KEY_MGMT_WPS)) {
2152                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
2153                         "reconnect (wps=%d wpa_state=%d)",
2154                         wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
2155                         wpa_s->wpa_state);
2156                 if (wpa_s->wpa_state == WPA_COMPLETED &&
2157                     wpa_s->current_ssid &&
2158                     wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
2159                     !locally_generated &&
2160                     disconnect_reason_recoverable(reason_code)) {
2161                         /*
2162                          * It looks like the AP has dropped association with
2163                          * us, but could allow us to get back in. Try to
2164                          * reconnect to the same BSS without full scan to save
2165                          * time for some common cases.
2166                          */
2167                         fast_reconnect = wpa_s->current_bss;
2168                         fast_reconnect_ssid = wpa_s->current_ssid;
2169                 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
2170                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2171                 else
2172                         wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
2173                                 "immediate scan");
2174         } else {
2175                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
2176                         "try to re-connect");
2177                 wpa_s->reassociate = 0;
2178                 wpa_s->disconnected = 1;
2179                 wpa_supplicant_cancel_sched_scan(wpa_s);
2180         }
2181         bssid = wpa_s->bssid;
2182         if (is_zero_ether_addr(bssid))
2183                 bssid = wpa_s->pending_bssid;
2184         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2185                 wpas_connection_failed(wpa_s, bssid);
2186         wpa_sm_notify_disassoc(wpa_s->wpa);
2187         if (locally_generated)
2188                 wpa_s->disconnect_reason = -reason_code;
2189         else
2190                 wpa_s->disconnect_reason = reason_code;
2191         wpas_notify_disconnect_reason(wpa_s);
2192         if (wpa_supplicant_dynamic_keys(wpa_s)) {
2193                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
2194                 wpa_clear_keys(wpa_s, wpa_s->bssid);
2195         }
2196         last_ssid = wpa_s->current_ssid;
2197         wpa_supplicant_mark_disassoc(wpa_s);
2198
2199         if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
2200                 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
2201                 wpa_s->current_ssid = last_ssid;
2202         }
2203
2204         if (fast_reconnect &&
2205             !wpas_network_disabled(wpa_s, fast_reconnect_ssid) &&
2206             !disallowed_bssid(wpa_s, fast_reconnect->bssid) &&
2207             !disallowed_ssid(wpa_s, fast_reconnect->ssid,
2208                              fast_reconnect->ssid_len) &&
2209             !wpas_temp_disabled(wpa_s, fast_reconnect_ssid)) {
2210 #ifndef CONFIG_NO_SCAN_PROCESSING
2211                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
2212                 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
2213                                            fast_reconnect_ssid) < 0) {
2214                         /* Recover through full scan */
2215                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2216                 }
2217 #endif /* CONFIG_NO_SCAN_PROCESSING */
2218         } else if (fast_reconnect) {
2219                 /*
2220                  * Could not reconnect to the same BSS due to network being
2221                  * disabled. Use a new scan to match the alternative behavior
2222                  * above, i.e., to continue automatic reconnection attempt in a
2223                  * way that enforces disabled network rules.
2224                  */
2225                 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2226         }
2227 }
2228
2229
2230 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2231 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
2232 {
2233         struct wpa_supplicant *wpa_s = eloop_ctx;
2234
2235         if (!wpa_s->pending_mic_error_report)
2236                 return;
2237
2238         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
2239         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
2240         wpa_s->pending_mic_error_report = 0;
2241 }
2242 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2243
2244
2245 static void
2246 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
2247                                          union wpa_event_data *data)
2248 {
2249         int pairwise;
2250         struct os_reltime t;
2251
2252         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
2253         pairwise = (data && data->michael_mic_failure.unicast);
2254         os_get_reltime(&t);
2255         if ((wpa_s->last_michael_mic_error.sec &&
2256              !os_reltime_expired(&t, &wpa_s->last_michael_mic_error, 60)) ||
2257             wpa_s->pending_mic_error_report) {
2258                 if (wpa_s->pending_mic_error_report) {
2259                         /*
2260                          * Send the pending MIC error report immediately since
2261                          * we are going to start countermeasures and AP better
2262                          * do the same.
2263                          */
2264                         wpa_sm_key_request(wpa_s->wpa, 1,
2265                                            wpa_s->pending_mic_error_pairwise);
2266                 }
2267
2268                 /* Send the new MIC error report immediately since we are going
2269                  * to start countermeasures and AP better do the same.
2270                  */
2271                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2272
2273                 /* initialize countermeasures */
2274                 wpa_s->countermeasures = 1;
2275
2276                 wpa_blacklist_add(wpa_s, wpa_s->bssid);
2277
2278                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
2279
2280                 /*
2281                  * Need to wait for completion of request frame. We do not get
2282                  * any callback for the message completion, so just wait a
2283                  * short while and hope for the best. */
2284                 os_sleep(0, 10000);
2285
2286                 wpa_drv_set_countermeasures(wpa_s, 1);
2287                 wpa_supplicant_deauthenticate(wpa_s,
2288                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
2289                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
2290                                      wpa_s, NULL);
2291                 eloop_register_timeout(60, 0,
2292                                        wpa_supplicant_stop_countermeasures,
2293                                        wpa_s, NULL);
2294                 /* TODO: mark the AP rejected for 60 second. STA is
2295                  * allowed to associate with another AP.. */
2296         } else {
2297 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2298                 if (wpa_s->mic_errors_seen) {
2299                         /*
2300                          * Reduce the effectiveness of Michael MIC error
2301                          * reports as a means for attacking against TKIP if
2302                          * more than one MIC failure is noticed with the same
2303                          * PTK. We delay the transmission of the reports by a
2304                          * random time between 0 and 60 seconds in order to
2305                          * force the attacker wait 60 seconds before getting
2306                          * the information on whether a frame resulted in a MIC
2307                          * failure.
2308                          */
2309                         u8 rval[4];
2310                         int sec;
2311
2312                         if (os_get_random(rval, sizeof(rval)) < 0)
2313                                 sec = os_random() % 60;
2314                         else
2315                                 sec = WPA_GET_BE32(rval) % 60;
2316                         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
2317                                 "report %d seconds", sec);
2318                         wpa_s->pending_mic_error_report = 1;
2319                         wpa_s->pending_mic_error_pairwise = pairwise;
2320                         eloop_cancel_timeout(
2321                                 wpa_supplicant_delayed_mic_error_report,
2322                                 wpa_s, NULL);
2323                         eloop_register_timeout(
2324                                 sec, os_random() % 1000000,
2325                                 wpa_supplicant_delayed_mic_error_report,
2326                                 wpa_s, NULL);
2327                 } else {
2328                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2329                 }
2330 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2331                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2332 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2333         }
2334         wpa_s->last_michael_mic_error = t;
2335         wpa_s->mic_errors_seen++;
2336 }
2337
2338
2339 #ifdef CONFIG_TERMINATE_ONLASTIF
2340 static int any_interfaces(struct wpa_supplicant *head)
2341 {
2342         struct wpa_supplicant *wpa_s;
2343
2344         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
2345                 if (!wpa_s->interface_removed)
2346                         return 1;
2347         return 0;
2348 }
2349 #endif /* CONFIG_TERMINATE_ONLASTIF */
2350
2351
2352 static void
2353 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
2354                                       union wpa_event_data *data)
2355 {
2356         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
2357                 return;
2358
2359         switch (data->interface_status.ievent) {
2360         case EVENT_INTERFACE_ADDED:
2361                 if (!wpa_s->interface_removed)
2362                         break;
2363                 wpa_s->interface_removed = 0;
2364                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
2365                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
2366                         wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
2367                                 "driver after interface was added");
2368                 }
2369                 break;
2370         case EVENT_INTERFACE_REMOVED:
2371                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
2372                 wpa_s->interface_removed = 1;
2373                 wpa_supplicant_mark_disassoc(wpa_s);
2374                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2375                 l2_packet_deinit(wpa_s->l2);
2376                 wpa_s->l2 = NULL;
2377 #ifdef CONFIG_IBSS_RSN
2378                 ibss_rsn_deinit(wpa_s->ibss_rsn);
2379                 wpa_s->ibss_rsn = NULL;
2380 #endif /* CONFIG_IBSS_RSN */
2381 #ifdef CONFIG_TERMINATE_ONLASTIF
2382                 /* check if last interface */
2383                 if (!any_interfaces(wpa_s->global->ifaces))
2384                         eloop_terminate();
2385 #endif /* CONFIG_TERMINATE_ONLASTIF */
2386                 break;
2387         }
2388 }
2389
2390
2391 #ifdef CONFIG_PEERKEY
2392 static void
2393 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
2394                               union wpa_event_data *data)
2395 {
2396         if (data == NULL)
2397                 return;
2398         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
2399 }
2400 #endif /* CONFIG_PEERKEY */
2401
2402
2403 #ifdef CONFIG_TDLS
2404 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
2405                                       union wpa_event_data *data)
2406 {
2407         if (data == NULL)
2408                 return;
2409         switch (data->tdls.oper) {
2410         case TDLS_REQUEST_SETUP:
2411                 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer);
2412                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2413                         wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
2414                 else
2415                         wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer);
2416                 break;
2417         case TDLS_REQUEST_TEARDOWN:
2418                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2419                         wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer,
2420                                                data->tdls.reason_code);
2421                 else
2422                         wpa_drv_tdls_oper(wpa_s, TDLS_TEARDOWN,
2423                                           data->tdls.peer);
2424                 break;
2425         }
2426 }
2427 #endif /* CONFIG_TDLS */
2428
2429
2430 #ifdef CONFIG_WNM
2431 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
2432                                      union wpa_event_data *data)
2433 {
2434         if (data == NULL)
2435                 return;
2436         switch (data->wnm.oper) {
2437         case WNM_OPER_SLEEP:
2438                 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
2439                            "(action=%d, intval=%d)",
2440                            data->wnm.sleep_action, data->wnm.sleep_intval);
2441                 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
2442                                              data->wnm.sleep_intval, NULL);
2443                 break;
2444         }
2445 }
2446 #endif /* CONFIG_WNM */
2447
2448
2449 #ifdef CONFIG_IEEE80211R
2450 static void
2451 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
2452                                  union wpa_event_data *data)
2453 {
2454         if (data == NULL)
2455                 return;
2456
2457         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
2458                                     data->ft_ies.ies_len,
2459                                     data->ft_ies.ft_action,
2460                                     data->ft_ies.target_ap,
2461                                     data->ft_ies.ric_ies,
2462                                     data->ft_ies.ric_ies_len) < 0) {
2463                 /* TODO: prevent MLME/driver from trying to associate? */
2464         }
2465 }
2466 #endif /* CONFIG_IEEE80211R */
2467
2468
2469 #ifdef CONFIG_IBSS_RSN
2470 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
2471                                                 union wpa_event_data *data)
2472 {
2473         struct wpa_ssid *ssid;
2474         if (wpa_s->wpa_state < WPA_ASSOCIATED)
2475                 return;
2476         if (data == NULL)
2477                 return;
2478         ssid = wpa_s->current_ssid;
2479         if (ssid == NULL)
2480                 return;
2481         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2482                 return;
2483
2484         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
2485 }
2486
2487
2488 static void wpa_supplicant_event_ibss_auth(struct wpa_supplicant *wpa_s,
2489                                            union wpa_event_data *data)
2490 {
2491         struct wpa_ssid *ssid = wpa_s->current_ssid;
2492
2493         if (ssid == NULL)
2494                 return;
2495
2496         /* check if the ssid is correctly configured as IBSS/RSN */
2497         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2498                 return;
2499
2500         ibss_rsn_handle_auth(wpa_s->ibss_rsn, data->rx_mgmt.frame,
2501                              data->rx_mgmt.frame_len);
2502 }
2503 #endif /* CONFIG_IBSS_RSN */
2504
2505
2506 #ifdef CONFIG_IEEE80211R
2507 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
2508                          size_t len)
2509 {
2510         const u8 *sta_addr, *target_ap_addr;
2511         u16 status;
2512
2513         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
2514         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
2515                 return; /* only SME case supported for now */
2516         if (len < 1 + 2 * ETH_ALEN + 2)
2517                 return;
2518         if (data[0] != 2)
2519                 return; /* Only FT Action Response is supported for now */
2520         sta_addr = data + 1;
2521         target_ap_addr = data + 1 + ETH_ALEN;
2522         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
2523         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
2524                 MACSTR " TargetAP " MACSTR " status %u",
2525                 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
2526
2527         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
2528                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
2529                         " in FT Action Response", MAC2STR(sta_addr));
2530                 return;
2531         }
2532
2533         if (status) {
2534                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
2535                         "failure (status code %d)", status);
2536                 /* TODO: report error to FT code(?) */
2537                 return;
2538         }
2539
2540         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
2541                                     len - (1 + 2 * ETH_ALEN + 2), 1,
2542                                     target_ap_addr, NULL, 0) < 0)
2543                 return;
2544
2545 #ifdef CONFIG_SME
2546         {
2547                 struct wpa_bss *bss;
2548                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
2549                 if (bss)
2550                         wpa_s->sme.freq = bss->freq;
2551                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
2552                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
2553                               WLAN_AUTH_FT);
2554         }
2555 #endif /* CONFIG_SME */
2556 }
2557 #endif /* CONFIG_IEEE80211R */
2558
2559
2560 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
2561                                                struct unprot_deauth *e)
2562 {
2563 #ifdef CONFIG_IEEE80211W
2564         wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
2565                    "dropped: " MACSTR " -> " MACSTR
2566                    " (reason code %u)",
2567                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2568         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2569 #endif /* CONFIG_IEEE80211W */
2570 }
2571
2572
2573 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
2574                                                  struct unprot_disassoc *e)
2575 {
2576 #ifdef CONFIG_IEEE80211W
2577         wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
2578                    "dropped: " MACSTR " -> " MACSTR
2579                    " (reason code %u)",
2580                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2581         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2582 #endif /* CONFIG_IEEE80211W */
2583 }
2584
2585
2586 static void wpas_event_disconnect(struct wpa_supplicant *wpa_s, const u8 *addr,
2587                                   u16 reason_code, int locally_generated,
2588                                   const u8 *ie, size_t ie_len, int deauth)
2589 {
2590 #ifdef CONFIG_AP
2591         if (wpa_s->ap_iface && addr) {
2592                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], addr);
2593                 return;
2594         }
2595
2596         if (wpa_s->ap_iface) {
2597                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in AP mode");
2598                 return;
2599         }
2600 #endif /* CONFIG_AP */
2601
2602         wpa_supplicant_event_disassoc(wpa_s, reason_code, locally_generated);
2603
2604         if (((reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
2605               ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
2606                 (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
2607                eapol_sm_failed(wpa_s->eapol))) &&
2608              !wpa_s->eap_expected_failure))
2609                 wpas_auth_failed(wpa_s);
2610
2611 #ifdef CONFIG_P2P
2612         if (deauth && reason_code > 0) {
2613                 if (wpas_p2p_deauth_notif(wpa_s, addr, reason_code, ie, ie_len,
2614                                           locally_generated) > 0) {
2615                         /*
2616                          * The interface was removed, so cannot continue
2617                          * processing any additional operations after this.
2618                          */
2619                         return;
2620                 }
2621         }
2622 #endif /* CONFIG_P2P */
2623
2624         wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
2625                                              locally_generated);
2626 }
2627
2628
2629 static void wpas_event_disassoc(struct wpa_supplicant *wpa_s,
2630                                 struct disassoc_info *info)
2631 {
2632         u16 reason_code = 0;
2633         int locally_generated = 0;
2634         const u8 *addr = NULL;
2635         const u8 *ie = NULL;
2636         size_t ie_len = 0;
2637
2638         wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
2639
2640         if (info) {
2641                 addr = info->addr;
2642                 ie = info->ie;
2643                 ie_len = info->ie_len;
2644                 reason_code = info->reason_code;
2645                 locally_generated = info->locally_generated;
2646                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", reason_code,
2647                         locally_generated ? " (locally generated)" : "");
2648                 if (addr)
2649                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2650                                 MAC2STR(addr));
2651                 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
2652                             ie, ie_len);
2653         }
2654
2655 #ifdef CONFIG_AP
2656         if (wpa_s->ap_iface && info && info->addr) {
2657                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], info->addr);
2658                 return;
2659         }
2660
2661         if (wpa_s->ap_iface) {
2662                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in AP mode");
2663                 return;
2664         }
2665 #endif /* CONFIG_AP */
2666
2667 #ifdef CONFIG_P2P
2668         if (info) {
2669                 wpas_p2p_disassoc_notif(
2670                         wpa_s, info->addr, reason_code, info->ie, info->ie_len,
2671                         locally_generated);
2672         }
2673 #endif /* CONFIG_P2P */
2674
2675         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2676                 sme_event_disassoc(wpa_s, info);
2677
2678         wpas_event_disconnect(wpa_s, addr, reason_code, locally_generated,
2679                               ie, ie_len, 0);
2680 }
2681
2682
2683 static void wpas_event_deauth(struct wpa_supplicant *wpa_s,
2684                               struct deauth_info *info)
2685 {
2686         u16 reason_code = 0;
2687         int locally_generated = 0;
2688         const u8 *addr = NULL;
2689         const u8 *ie = NULL;
2690         size_t ie_len = 0;
2691
2692         wpa_dbg(wpa_s, MSG_DEBUG, "Deauthentication notification");
2693
2694         if (info) {
2695                 addr = info->addr;
2696                 ie = info->ie;
2697                 ie_len = info->ie_len;
2698                 reason_code = info->reason_code;
2699                 locally_generated = info->locally_generated;
2700                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2701                         reason_code,
2702                         locally_generated ? " (locally generated)" : "");
2703                 if (addr) {
2704                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2705                                 MAC2STR(addr));
2706                 }
2707                 wpa_hexdump(MSG_DEBUG, "Deauthentication frame IE(s)",
2708                             ie, ie_len);
2709         }
2710
2711         wpa_reset_ft_completed(wpa_s->wpa);
2712
2713         wpas_event_disconnect(wpa_s, addr, reason_code,
2714                               locally_generated, ie, ie_len, 1);
2715 }
2716
2717
2718 static void wpa_supplicant_update_channel_list(struct wpa_supplicant *wpa_s)
2719 {
2720         struct wpa_supplicant *ifs;
2721
2722         if (wpa_s->drv_priv == NULL)
2723                 return; /* Ignore event during drv initialization */
2724
2725         free_hw_features(wpa_s);
2726         wpa_s->hw.modes = wpa_drv_get_hw_feature_data(
2727                 wpa_s, &wpa_s->hw.num_modes, &wpa_s->hw.flags);
2728
2729 #ifdef CONFIG_P2P
2730         wpas_p2p_update_channel_list(wpa_s);
2731 #endif /* CONFIG_P2P */
2732
2733         /*
2734          * Check other interfaces to see if they share the same radio. If
2735          * so, they get updated with this same hw mode info.
2736          */
2737         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
2738                          radio_list) {
2739                 if (ifs != wpa_s) {
2740                         wpa_printf(MSG_DEBUG, "%s: Updating hw mode",
2741                                    ifs->ifname);
2742                         free_hw_features(ifs);
2743                         ifs->hw.modes = wpa_drv_get_hw_feature_data(
2744                                 ifs, &ifs->hw.num_modes, &ifs->hw.flags);
2745                 }
2746         }
2747 }
2748
2749
2750 static void wpas_event_rx_mgmt_action(struct wpa_supplicant *wpa_s,
2751                                       const struct ieee80211_mgmt *mgmt,
2752                                       size_t len, int freq)
2753 {
2754         const u8 *payload;
2755         size_t plen;
2756         u8 category;
2757
2758         if (len < IEEE80211_HDRLEN + 2)
2759                 return;
2760
2761         payload = &mgmt->u.action.category;
2762         category = *payload++;
2763         plen = (((const u8 *) mgmt) + len) - payload;
2764
2765         wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
2766                 " Category=%u DataLen=%d freq=%d MHz",
2767                 MAC2STR(mgmt->sa), category, (int) plen, freq);
2768
2769 #ifdef CONFIG_IEEE80211R
2770         if (category == WLAN_ACTION_FT) {
2771                 ft_rx_action(wpa_s, payload, plen);
2772                 return;
2773         }
2774 #endif /* CONFIG_IEEE80211R */
2775
2776 #ifdef CONFIG_IEEE80211W
2777 #ifdef CONFIG_SME
2778         if (category == WLAN_ACTION_SA_QUERY) {
2779                 sme_sa_query_rx(wpa_s, mgmt->sa, payload, plen);
2780                 return;
2781         }
2782 #endif /* CONFIG_SME */
2783 #endif /* CONFIG_IEEE80211W */
2784
2785 #ifdef CONFIG_WNM
2786         if (mgmt->u.action.category == WLAN_ACTION_WNM) {
2787                 ieee802_11_rx_wnm_action(wpa_s, mgmt, len);
2788                 return;
2789         }
2790 #endif /* CONFIG_WNM */
2791
2792 #ifdef CONFIG_GAS
2793         if ((mgmt->u.action.category == WLAN_ACTION_PUBLIC ||
2794              mgmt->u.action.category == WLAN_ACTION_PROTECTED_DUAL) &&
2795             gas_query_rx(wpa_s->gas, mgmt->da, mgmt->sa, mgmt->bssid,
2796                          mgmt->u.action.category,
2797                          payload, plen, freq) == 0)
2798                 return;
2799 #endif /* CONFIG_GAS */
2800
2801 #ifdef CONFIG_TDLS
2802         if (category == WLAN_ACTION_PUBLIC && plen >= 4 &&
2803             payload[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
2804                 wpa_dbg(wpa_s, MSG_DEBUG,
2805                         "TDLS: Received Discovery Response from " MACSTR,
2806                         MAC2STR(mgmt->sa));
2807                 return;
2808         }
2809 #endif /* CONFIG_TDLS */
2810
2811 #ifdef CONFIG_INTERWORKING
2812         if (category == WLAN_ACTION_QOS && plen >= 1 &&
2813             payload[0] == QOS_QOS_MAP_CONFIG) {
2814                 const u8 *pos = payload + 1;
2815                 size_t qlen = plen - 1;
2816                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: Received QoS Map Configure frame from "
2817                         MACSTR, MAC2STR(mgmt->sa));
2818                 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) == 0 &&
2819                     qlen > 2 && pos[0] == WLAN_EID_QOS_MAP_SET &&
2820                     pos[1] <= qlen - 2 && pos[1] >= 16)
2821                         wpas_qos_map_set(wpa_s, pos + 2, pos[1]);
2822                 return;
2823         }
2824 #endif /* CONFIG_INTERWORKING */
2825
2826 #ifdef CONFIG_P2P
2827         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
2828                            category, payload, plen, freq);
2829 #endif /* CONFIG_P2P */
2830 }
2831
2832
2833 static void wpa_supplicant_notify_avoid_freq(struct wpa_supplicant *wpa_s,
2834                                              union wpa_event_data *event)
2835 {
2836 #ifdef CONFIG_P2P
2837         struct wpa_supplicant *ifs;
2838 #endif /* CONFIG_P2P */
2839         struct wpa_freq_range_list *list;
2840         char *str = NULL;
2841
2842         list = &event->freq_range;
2843
2844         if (list->num)
2845                 str = freq_range_list_str(list);
2846         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AVOID_FREQ "ranges=%s",
2847                 str ? str : "");
2848
2849 #ifdef CONFIG_P2P
2850         if (freq_range_list_parse(&wpa_s->global->p2p_go_avoid_freq, str)) {
2851                 wpa_dbg(wpa_s, MSG_ERROR, "%s: Failed to parse freq range",
2852                         __func__);
2853         } else {
2854                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Update channel list based on frequency avoid event");
2855                 wpas_p2p_update_channel_list(wpa_s);
2856         }
2857
2858         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
2859                 int freq;
2860                 if (!ifs->current_ssid ||
2861                     !ifs->current_ssid->p2p_group ||
2862                     (ifs->current_ssid->mode != WPAS_MODE_P2P_GO &&
2863                      ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION))
2864                         continue;
2865
2866                 freq = ifs->current_ssid->frequency;
2867                 if (!freq_range_list_includes(list, freq)) {
2868                         wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating frequency %d MHz in safe range",
2869                                 freq);
2870                         continue;
2871                 }
2872
2873                 wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating in unsafe frequency %d MHz",
2874                         freq);
2875                 /* TODO: Consider using CSA or removing the group within
2876                  * wpa_supplicant */
2877                 wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
2878         }
2879 #endif /* CONFIG_P2P */
2880
2881         os_free(str);
2882 }
2883
2884
2885 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
2886                           union wpa_event_data *data)
2887 {
2888         struct wpa_supplicant *wpa_s = ctx;
2889
2890         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
2891             event != EVENT_INTERFACE_ENABLED &&
2892             event != EVENT_INTERFACE_STATUS &&
2893             event != EVENT_SCHED_SCAN_STOPPED) {
2894                 wpa_dbg(wpa_s, MSG_DEBUG,
2895                         "Ignore event %s (%d) while interface is disabled",
2896                         event_to_string(event), event);
2897                 return;
2898         }
2899
2900 #ifndef CONFIG_NO_STDOUT_DEBUG
2901 {
2902         int level = MSG_DEBUG;
2903
2904         if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
2905                 const struct ieee80211_hdr *hdr;
2906                 u16 fc;
2907                 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
2908                 fc = le_to_host16(hdr->frame_control);
2909                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2910                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
2911                         level = MSG_EXCESSIVE;
2912         }
2913
2914         wpa_dbg(wpa_s, level, "Event %s (%d) received",
2915                 event_to_string(event), event);
2916 }
2917 #endif /* CONFIG_NO_STDOUT_DEBUG */
2918
2919         switch (event) {
2920         case EVENT_AUTH:
2921                 sme_event_auth(wpa_s, data);
2922                 break;
2923         case EVENT_ASSOC:
2924                 wpa_supplicant_event_assoc(wpa_s, data);
2925                 break;
2926         case EVENT_DISASSOC:
2927                 wpas_event_disassoc(wpa_s,
2928                                     data ? &data->disassoc_info : NULL);
2929                 break;
2930         case EVENT_DEAUTH:
2931                 wpas_event_deauth(wpa_s,
2932                                   data ? &data->deauth_info : NULL);
2933                 break;
2934         case EVENT_MICHAEL_MIC_FAILURE:
2935                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
2936                 break;
2937 #ifndef CONFIG_NO_SCAN_PROCESSING
2938         case EVENT_SCAN_STARTED:
2939                 os_get_reltime(&wpa_s->scan_start_time);
2940                 if (wpa_s->own_scan_requested) {
2941                         struct os_reltime diff;
2942
2943                         os_reltime_sub(&wpa_s->scan_start_time,
2944                                        &wpa_s->scan_trigger_time, &diff);
2945                         wpa_dbg(wpa_s, MSG_DEBUG, "Own scan request started a scan in %ld.%06ld seconds",
2946                                 diff.sec, diff.usec);
2947                         wpa_s->own_scan_requested = 0;
2948                         wpa_s->own_scan_running = 1;
2949                         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
2950                             wpa_s->manual_scan_use_id) {
2951                                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED "id=%u",
2952                                         wpa_s->manual_scan_id);
2953                         } else {
2954                                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
2955                         }
2956                 } else {
2957                         wpa_dbg(wpa_s, MSG_DEBUG, "External program started a scan");
2958                         wpa_s->external_scan_running = 1;
2959                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
2960                 }
2961                 break;
2962         case EVENT_SCAN_RESULTS:
2963                 if (os_reltime_initialized(&wpa_s->scan_start_time)) {
2964                         struct os_reltime now, diff;
2965                         os_get_reltime(&now);
2966                         os_reltime_sub(&now, &wpa_s->scan_start_time, &diff);
2967                         wpa_s->scan_start_time.sec = 0;
2968                         wpa_s->scan_start_time.usec = 0;
2969                         wpa_dbg(wpa_s, MSG_DEBUG, "Scan completed in %ld.%06ld seconds",
2970                                 diff.sec, diff.usec);
2971                 }
2972                 wpa_supplicant_event_scan_results(wpa_s, data);
2973                 wpa_s->own_scan_running = 0;
2974                 wpa_s->external_scan_running = 0;
2975                 radio_work_check_next(wpa_s);
2976                 break;
2977 #endif /* CONFIG_NO_SCAN_PROCESSING */
2978         case EVENT_ASSOCINFO:
2979                 wpa_supplicant_event_associnfo(wpa_s, data);
2980                 break;
2981         case EVENT_INTERFACE_STATUS:
2982                 wpa_supplicant_event_interface_status(wpa_s, data);
2983                 break;
2984         case EVENT_PMKID_CANDIDATE:
2985                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
2986                 break;
2987 #ifdef CONFIG_PEERKEY
2988         case EVENT_STKSTART:
2989                 wpa_supplicant_event_stkstart(wpa_s, data);
2990                 break;
2991 #endif /* CONFIG_PEERKEY */
2992 #ifdef CONFIG_TDLS
2993         case EVENT_TDLS:
2994                 wpa_supplicant_event_tdls(wpa_s, data);
2995                 break;
2996 #endif /* CONFIG_TDLS */
2997 #ifdef CONFIG_WNM
2998         case EVENT_WNM:
2999                 wpa_supplicant_event_wnm(wpa_s, data);
3000                 break;
3001 #endif /* CONFIG_WNM */
3002 #ifdef CONFIG_IEEE80211R
3003         case EVENT_FT_RESPONSE:
3004                 wpa_supplicant_event_ft_response(wpa_s, data);
3005                 break;
3006 #endif /* CONFIG_IEEE80211R */
3007 #ifdef CONFIG_IBSS_RSN
3008         case EVENT_IBSS_RSN_START:
3009                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
3010                 break;
3011 #endif /* CONFIG_IBSS_RSN */
3012         case EVENT_ASSOC_REJECT:
3013                 if (data->assoc_reject.bssid)
3014                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3015                                 "bssid=" MACSTR " status_code=%u",
3016                                 MAC2STR(data->assoc_reject.bssid),
3017                                 data->assoc_reject.status_code);
3018                 else
3019                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3020                                 "status_code=%u",
3021                                 data->assoc_reject.status_code);
3022                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3023                         sme_event_assoc_reject(wpa_s, data);
3024                 else {
3025                         const u8 *bssid = data->assoc_reject.bssid;
3026                         if (bssid == NULL || is_zero_ether_addr(bssid))
3027                                 bssid = wpa_s->pending_bssid;
3028                         wpas_connection_failed(wpa_s, bssid);
3029                         wpa_supplicant_mark_disassoc(wpa_s);
3030                 }
3031                 break;
3032         case EVENT_AUTH_TIMED_OUT:
3033                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3034                         sme_event_auth_timed_out(wpa_s, data);
3035                 break;
3036         case EVENT_ASSOC_TIMED_OUT:
3037                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3038                         sme_event_assoc_timed_out(wpa_s, data);
3039                 break;
3040         case EVENT_TX_STATUS:
3041                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
3042                         " type=%d stype=%d",
3043                         MAC2STR(data->tx_status.dst),
3044                         data->tx_status.type, data->tx_status.stype);
3045 #ifdef CONFIG_AP
3046                 if (wpa_s->ap_iface == NULL) {
3047 #ifdef CONFIG_OFFCHANNEL
3048                         if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3049                             data->tx_status.stype == WLAN_FC_STYPE_ACTION)
3050                                 offchannel_send_action_tx_status(
3051                                         wpa_s, data->tx_status.dst,
3052                                         data->tx_status.data,
3053                                         data->tx_status.data_len,
3054                                         data->tx_status.ack ?
3055                                         OFFCHANNEL_SEND_ACTION_SUCCESS :
3056                                         OFFCHANNEL_SEND_ACTION_NO_ACK);
3057 #endif /* CONFIG_OFFCHANNEL */
3058                         break;
3059                 }
3060 #endif /* CONFIG_AP */
3061 #ifdef CONFIG_OFFCHANNEL
3062                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
3063                         MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
3064                 /*
3065                  * Catch TX status events for Action frames we sent via group
3066                  * interface in GO mode.
3067                  */
3068                 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3069                     data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
3070                     os_memcmp(wpa_s->parent->pending_action_dst,
3071                               data->tx_status.dst, ETH_ALEN) == 0) {
3072                         offchannel_send_action_tx_status(
3073                                 wpa_s->parent, data->tx_status.dst,
3074                                 data->tx_status.data,
3075                                 data->tx_status.data_len,
3076                                 data->tx_status.ack ?
3077                                 OFFCHANNEL_SEND_ACTION_SUCCESS :
3078                                 OFFCHANNEL_SEND_ACTION_NO_ACK);
3079                         break;
3080                 }
3081 #endif /* CONFIG_OFFCHANNEL */
3082 #ifdef CONFIG_AP
3083                 switch (data->tx_status.type) {
3084                 case WLAN_FC_TYPE_MGMT:
3085                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
3086                                       data->tx_status.data_len,
3087                                       data->tx_status.stype,
3088                                       data->tx_status.ack);
3089                         break;
3090                 case WLAN_FC_TYPE_DATA:
3091                         ap_tx_status(wpa_s, data->tx_status.dst,
3092                                      data->tx_status.data,
3093                                      data->tx_status.data_len,
3094                                      data->tx_status.ack);
3095                         break;
3096                 }
3097 #endif /* CONFIG_AP */
3098                 break;
3099 #ifdef CONFIG_AP
3100         case EVENT_EAPOL_TX_STATUS:
3101                 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
3102                                    data->eapol_tx_status.data,
3103                                    data->eapol_tx_status.data_len,
3104                                    data->eapol_tx_status.ack);
3105                 break;
3106         case EVENT_DRIVER_CLIENT_POLL_OK:
3107                 ap_client_poll_ok(wpa_s, data->client_poll.addr);
3108                 break;
3109         case EVENT_RX_FROM_UNKNOWN:
3110                 if (wpa_s->ap_iface == NULL)
3111                         break;
3112                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
3113                                        data->rx_from_unknown.wds);
3114                 break;
3115         case EVENT_CH_SWITCH:
3116                 if (!data)
3117                         break;
3118                 if (!wpa_s->ap_iface) {
3119                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: Ignore channel switch "
3120                                 "event in non-AP mode");
3121                         break;
3122                 }
3123
3124                 wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
3125                                   data->ch_switch.ht_enabled,
3126                                   data->ch_switch.ch_offset,
3127                                   data->ch_switch.ch_width,
3128                                   data->ch_switch.cf1,
3129                                   data->ch_switch.cf2);
3130                 break;
3131 #endif /* CONFIG_AP */
3132         case EVENT_RX_MGMT: {
3133                 u16 fc, stype;
3134                 const struct ieee80211_mgmt *mgmt;
3135
3136 #ifdef CONFIG_TESTING_OPTIONS
3137                 if (wpa_s->ext_mgmt_frame_handling) {
3138                         struct rx_mgmt *rx = &data->rx_mgmt;
3139                         size_t hex_len = 2 * rx->frame_len + 1;
3140                         char *hex = os_malloc(hex_len);
3141                         if (hex) {
3142                                 wpa_snprintf_hex(hex, hex_len,
3143                                                  rx->frame, rx->frame_len);
3144                                 wpa_msg(wpa_s, MSG_INFO, "MGMT-RX freq=%d datarate=%u ssi_signal=%d %s",
3145                                         rx->freq, rx->datarate, rx->ssi_signal,
3146                                         hex);
3147                                 os_free(hex);
3148                         }
3149                         break;
3150                 }
3151 #endif /* CONFIG_TESTING_OPTIONS */
3152
3153                 mgmt = (const struct ieee80211_mgmt *)
3154                         data->rx_mgmt.frame;
3155                 fc = le_to_host16(mgmt->frame_control);
3156                 stype = WLAN_FC_GET_STYPE(fc);
3157
3158 #ifdef CONFIG_AP
3159                 if (wpa_s->ap_iface == NULL) {
3160 #endif /* CONFIG_AP */
3161 #ifdef CONFIG_P2P
3162                         if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3163                             data->rx_mgmt.frame_len > 24) {
3164                                 const u8 *src = mgmt->sa;
3165                                 const u8 *ie = mgmt->u.probe_req.variable;
3166                                 size_t ie_len = data->rx_mgmt.frame_len -
3167                                         (mgmt->u.probe_req.variable -
3168                                          data->rx_mgmt.frame);
3169                                 wpas_p2p_probe_req_rx(
3170                                         wpa_s, src, mgmt->da,
3171                                         mgmt->bssid, ie, ie_len,
3172                                         data->rx_mgmt.ssi_signal);
3173                                 break;
3174                         }
3175 #endif /* CONFIG_P2P */
3176 #ifdef CONFIG_IBSS_RSN
3177                         if (stype == WLAN_FC_STYPE_AUTH &&
3178                             data->rx_mgmt.frame_len >= 30) {
3179                                 wpa_supplicant_event_ibss_auth(wpa_s, data);
3180                                 break;
3181                         }
3182 #endif /* CONFIG_IBSS_RSN */
3183
3184                         if (stype == WLAN_FC_STYPE_ACTION) {
3185                                 wpas_event_rx_mgmt_action(
3186                                         wpa_s, mgmt, data->rx_mgmt.frame_len,
3187                                         data->rx_mgmt.freq);
3188                                 break;
3189                         }
3190
3191                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
3192                                 "management frame in non-AP mode");
3193                         break;
3194 #ifdef CONFIG_AP
3195                 }
3196
3197                 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3198                     data->rx_mgmt.frame_len > 24) {
3199                         const u8 *ie = mgmt->u.probe_req.variable;
3200                         size_t ie_len = data->rx_mgmt.frame_len -
3201                                 (mgmt->u.probe_req.variable -
3202                                  data->rx_mgmt.frame);
3203
3204                         wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
3205                                          mgmt->bssid, ie, ie_len,
3206                                          data->rx_mgmt.ssi_signal);
3207                 }
3208
3209                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
3210 #endif /* CONFIG_AP */
3211                 break;
3212                 }
3213         case EVENT_RX_PROBE_REQ:
3214                 if (data->rx_probe_req.sa == NULL ||
3215                     data->rx_probe_req.ie == NULL)
3216                         break;
3217 #ifdef CONFIG_AP
3218                 if (wpa_s->ap_iface) {
3219                         hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
3220                                              data->rx_probe_req.sa,
3221                                              data->rx_probe_req.da,
3222                                              data->rx_probe_req.bssid,
3223                                              data->rx_probe_req.ie,
3224                                              data->rx_probe_req.ie_len,
3225                                              data->rx_probe_req.ssi_signal);
3226                         break;
3227                 }
3228 #endif /* CONFIG_AP */
3229 #ifdef CONFIG_P2P
3230                 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
3231                                       data->rx_probe_req.da,
3232                                       data->rx_probe_req.bssid,
3233                                       data->rx_probe_req.ie,
3234                                       data->rx_probe_req.ie_len,
3235                                       data->rx_probe_req.ssi_signal);
3236 #endif /* CONFIG_P2P */
3237                 break;
3238         case EVENT_REMAIN_ON_CHANNEL:
3239 #ifdef CONFIG_OFFCHANNEL
3240                 offchannel_remain_on_channel_cb(
3241                         wpa_s, data->remain_on_channel.freq,
3242                         data->remain_on_channel.duration);
3243 #endif /* CONFIG_OFFCHANNEL */
3244 #ifdef CONFIG_P2P
3245                 wpas_p2p_remain_on_channel_cb(
3246                         wpa_s, data->remain_on_channel.freq,
3247                         data->remain_on_channel.duration);
3248 #endif /* CONFIG_P2P */
3249                 break;
3250         case EVENT_CANCEL_REMAIN_ON_CHANNEL:
3251 #ifdef CONFIG_OFFCHANNEL
3252                 offchannel_cancel_remain_on_channel_cb(
3253                         wpa_s, data->remain_on_channel.freq);
3254 #endif /* CONFIG_OFFCHANNEL */
3255 #ifdef CONFIG_P2P
3256                 wpas_p2p_cancel_remain_on_channel_cb(
3257                         wpa_s, data->remain_on_channel.freq);
3258 #endif /* CONFIG_P2P */
3259                 break;
3260         case EVENT_EAPOL_RX:
3261                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
3262                                         data->eapol_rx.data,
3263                                         data->eapol_rx.data_len);
3264                 break;
3265         case EVENT_SIGNAL_CHANGE:
3266                 bgscan_notify_signal_change(
3267                         wpa_s, data->signal_change.above_threshold,
3268                         data->signal_change.current_signal,
3269                         data->signal_change.current_noise,
3270                         data->signal_change.current_txrate);
3271                 break;
3272         case EVENT_INTERFACE_ENABLED:
3273                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
3274                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
3275                         wpa_supplicant_update_mac_addr(wpa_s);
3276 #ifdef CONFIG_AP
3277                         if (!wpa_s->ap_iface) {
3278                                 wpa_supplicant_set_state(wpa_s,
3279                                                          WPA_DISCONNECTED);
3280                                 wpa_supplicant_req_scan(wpa_s, 0, 0);
3281                         } else
3282                                 wpa_supplicant_set_state(wpa_s,
3283                                                          WPA_COMPLETED);
3284 #else /* CONFIG_AP */
3285                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
3286                         wpa_supplicant_req_scan(wpa_s, 0, 0);
3287 #endif /* CONFIG_AP */
3288                 }
3289                 break;
3290         case EVENT_INTERFACE_DISABLED:
3291                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
3292 #ifdef CONFIG_P2P
3293                 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
3294                     (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group &&
3295                      wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)) {
3296                         /*
3297                          * The interface was externally disabled. Remove
3298                          * it assuming an external entity will start a
3299                          * new session if needed.
3300                          */
3301                         wpas_p2p_disconnect(wpa_s);
3302                         break;
3303                 }
3304 #endif /* CONFIG_P2P */
3305
3306                 wpa_supplicant_mark_disassoc(wpa_s);
3307                 radio_remove_works(wpa_s, NULL, 0);
3308
3309                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3310                 break;
3311         case EVENT_CHANNEL_LIST_CHANGED:
3312                 wpa_supplicant_update_channel_list(wpa_s);
3313                 break;
3314         case EVENT_INTERFACE_UNAVAILABLE:
3315 #ifdef CONFIG_P2P
3316                 wpas_p2p_interface_unavailable(wpa_s);
3317 #endif /* CONFIG_P2P */
3318                 break;
3319         case EVENT_BEST_CHANNEL:
3320                 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
3321                         "(%d %d %d)",
3322                         data->best_chan.freq_24, data->best_chan.freq_5,
3323                         data->best_chan.freq_overall);
3324                 wpa_s->best_24_freq = data->best_chan.freq_24;
3325                 wpa_s->best_5_freq = data->best_chan.freq_5;
3326                 wpa_s->best_overall_freq = data->best_chan.freq_overall;
3327 #ifdef CONFIG_P2P
3328                 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
3329                                               data->best_chan.freq_5,
3330                                               data->best_chan.freq_overall);
3331 #endif /* CONFIG_P2P */
3332                 break;
3333         case EVENT_UNPROT_DEAUTH:
3334                 wpa_supplicant_event_unprot_deauth(wpa_s,
3335                                                    &data->unprot_deauth);
3336                 break;
3337         case EVENT_UNPROT_DISASSOC:
3338                 wpa_supplicant_event_unprot_disassoc(wpa_s,
3339                                                      &data->unprot_disassoc);
3340                 break;
3341         case EVENT_STATION_LOW_ACK:
3342 #ifdef CONFIG_AP
3343                 if (wpa_s->ap_iface && data)
3344                         hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
3345                                                   data->low_ack.addr);
3346 #endif /* CONFIG_AP */
3347 #ifdef CONFIG_TDLS
3348                 if (data)
3349                         wpa_tdls_disable_link(wpa_s->wpa, data->low_ack.addr);
3350 #endif /* CONFIG_TDLS */
3351                 break;
3352         case EVENT_IBSS_PEER_LOST:
3353 #ifdef CONFIG_IBSS_RSN
3354                 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
3355 #endif /* CONFIG_IBSS_RSN */
3356                 break;
3357         case EVENT_DRIVER_GTK_REKEY:
3358                 if (os_memcmp(data->driver_gtk_rekey.bssid,
3359                               wpa_s->bssid, ETH_ALEN))
3360                         break;
3361                 if (!wpa_s->wpa)
3362                         break;
3363                 wpa_sm_update_replay_ctr(wpa_s->wpa,
3364                                          data->driver_gtk_rekey.replay_ctr);
3365                 break;
3366         case EVENT_SCHED_SCAN_STOPPED:
3367                 wpa_s->pno = 0;
3368                 wpa_s->sched_scanning = 0;
3369                 wpa_supplicant_notify_scanning(wpa_s, 0);
3370
3371                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
3372                         break;
3373
3374                 /*
3375                  * Start a new sched scan to continue searching for more SSIDs
3376                  * either if timed out or PNO schedule scan is pending.
3377                  */
3378                 if (wpa_s->sched_scan_timed_out) {
3379                         wpa_supplicant_req_sched_scan(wpa_s);
3380                 } else if (wpa_s->pno_sched_pending) {
3381                         wpa_s->pno_sched_pending = 0;
3382                         wpas_start_pno(wpa_s);
3383                 }
3384
3385                 break;
3386         case EVENT_WPS_BUTTON_PUSHED:
3387 #ifdef CONFIG_WPS
3388                 wpas_wps_start_pbc(wpa_s, NULL, 0);
3389 #endif /* CONFIG_WPS */
3390                 break;
3391         case EVENT_AVOID_FREQUENCIES:
3392                 wpa_supplicant_notify_avoid_freq(wpa_s, data);
3393                 break;
3394         case EVENT_CONNECT_FAILED_REASON:
3395 #ifdef CONFIG_AP
3396                 if (!wpa_s->ap_iface || !data)
3397                         break;
3398                 hostapd_event_connect_failed_reason(
3399                         wpa_s->ap_iface->bss[0],
3400                         data->connect_failed_reason.addr,
3401                         data->connect_failed_reason.code);
3402 #endif /* CONFIG_AP */
3403                 break;
3404         default:
3405                 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
3406                 break;
3407         }
3408 }