wpa_supplicant/events.c

   1 /*
   2  * WPA Supplicant - Driver event processing
   3  * Copyright (c) 2003-2015, 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 "fst/fst.h"
  27 #include "wnm_sta.h"
  28 #include "notify.h"
  29 #include "common/ieee802_11_defs.h"
  30 #include "common/ieee802_11_common.h"
  31 #include "crypto/random.h"
  32 #include "blacklist.h"
  33 #include "wpas_glue.h"
  34 #include "wps_supplicant.h"
  35 #include "ibss_rsn.h"
  36 #include "sme.h"
  37 #include "gas_query.h"
  38 #include "p2p_supplicant.h"
  39 #include "bgscan.h"
  40 #include "autoscan.h"
  41 #include "ap.h"
  42 #include "bss.h"
  43 #include "scan.h"
  44 #include "offchannel.h"
  45 #include "interworking.h"
  46 #include "mesh.h"
  47 #include "mesh_mpm.h"
  48 #include "wmm_ac.h"
  49
  50
  51 #ifndef CONFIG_NO_SCAN_PROCESSING
  52 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
  53                                               int new_scan, int own_request);
  54 #endif /* CONFIG_NO_SCAN_PROCESSING */
  55
  56
  57 static int wpas_temp_disabled(struct wpa_supplicant *wpa_s,
  58                               struct wpa_ssid *ssid)
  59 {
  60         struct os_reltime now;
  61
  62         if (ssid == NULL || ssid->disabled_until.sec == 0)
  63                 return 0;
  64
  65         os_get_reltime(&now);
  66         if (ssid->disabled_until.sec > now.sec)
  67                 return ssid->disabled_until.sec - now.sec;
  68
  69         wpas_clear_temp_disabled(wpa_s, ssid, 0);
  70
  71         return 0;
  72 }
  73
  74
  75 #ifndef CONFIG_NO_SCAN_PROCESSING
  76 /**
  77  * wpas_reenabled_network_time - Time until first network is re-enabled
  78  * @wpa_s: Pointer to wpa_supplicant data
  79  * Returns: If all enabled networks are temporarily disabled, returns the time
  80  *      (in sec) until the first network is re-enabled. Otherwise returns 0.
  81  *
  82  * This function is used in case all enabled networks are temporarily disabled,
  83  * in which case it returns the time (in sec) that the first network will be
  84  * re-enabled. The function assumes that at least one network is enabled.
  85  */
  86 static int wpas_reenabled_network_time(struct wpa_supplicant *wpa_s)
  87 {
  88         struct wpa_ssid *ssid;
  89         int disabled_for, res = 0;
  90
  91 #ifdef CONFIG_INTERWORKING
  92         if (wpa_s->conf->auto_interworking && wpa_s->conf->interworking &&
  93             wpa_s->conf->cred)
  94                 return 0;
  95 #endif /* CONFIG_INTERWORKING */
  96
  97         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
  98                 if (ssid->disabled)
  99                         continue;
 100
 101                 disabled_for = wpas_temp_disabled(wpa_s, ssid);
 102                 if (!disabled_for)
 103                         return 0;
 104
 105                 if (!res || disabled_for < res)
 106                         res = disabled_for;
 107         }
 108
 109         return res;
 110 }
 111 #endif /* CONFIG_NO_SCAN_PROCESSING */
 112
 113
 114 void wpas_network_reenabled(void *eloop_ctx, void *timeout_ctx)
 115 {
 116         struct wpa_supplicant *wpa_s = eloop_ctx;
 117
 118         if (wpa_s->disconnected || wpa_s->wpa_state != WPA_SCANNING)
 119                 return;
 120
 121         wpa_dbg(wpa_s, MSG_DEBUG,
 122                 "Try to associate due to network getting re-enabled");
 123         if (wpa_supplicant_fast_associate(wpa_s) != 1) {
 124                 wpa_supplicant_cancel_sched_scan(wpa_s);
 125                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 126         }
 127 }
 128
 129
 130 static struct wpa_bss * wpa_supplicant_get_new_bss(
 131         struct wpa_supplicant *wpa_s, const u8 *bssid)
 132 {
 133         struct wpa_bss *bss = NULL;
 134         struct wpa_ssid *ssid = wpa_s->current_ssid;
 135
 136         if (ssid->ssid_len > 0)
 137                 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
 138         if (!bss)
 139                 bss = wpa_bss_get_bssid(wpa_s, bssid);
 140
 141         return bss;
 142 }
 143
 144
 145 static void wpa_supplicant_update_current_bss(struct wpa_supplicant *wpa_s)
 146 {
 147         struct wpa_bss *bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
 148
 149         if (!bss) {
 150                 wpa_supplicant_update_scan_results(wpa_s);
 151
 152                 /* Get the BSS from the new scan results */
 153                 bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
 154         }
 155
 156         if (bss)
 157                 wpa_s->current_bss = bss;
 158 }
 159
 160
 161 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
 162 {
 163         struct wpa_ssid *ssid, *old_ssid;
 164         u8 drv_ssid[SSID_MAX_LEN];
 165         size_t drv_ssid_len;
 166         int res;
 167
 168         if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid) {
 169                 wpa_supplicant_update_current_bss(wpa_s);
 170
 171                 if (wpa_s->current_ssid->ssid_len == 0)
 172                         return 0; /* current profile still in use */
 173                 res = wpa_drv_get_ssid(wpa_s, drv_ssid);
 174                 if (res < 0) {
 175                         wpa_msg(wpa_s, MSG_INFO,
 176                                 "Failed to read SSID from driver");
 177                         return 0; /* try to use current profile */
 178                 }
 179                 drv_ssid_len = res;
 180
 181                 if (drv_ssid_len == wpa_s->current_ssid->ssid_len &&
 182                     os_memcmp(drv_ssid, wpa_s->current_ssid->ssid,
 183                               drv_ssid_len) == 0)
 184                         return 0; /* current profile still in use */
 185
 186                 wpa_msg(wpa_s, MSG_DEBUG,
 187                         "Driver-initiated BSS selection changed the SSID to %s",
 188                         wpa_ssid_txt(drv_ssid, drv_ssid_len));
 189                 /* continue selecting a new network profile */
 190         }
 191
 192         wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
 193                 "information");
 194         ssid = wpa_supplicant_get_ssid(wpa_s);
 195         if (ssid == NULL) {
 196                 wpa_msg(wpa_s, MSG_INFO,
 197                         "No network configuration found for the current AP");
 198                 return -1;
 199         }
 200
 201         if (wpas_network_disabled(wpa_s, ssid)) {
 202                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
 203                 return -1;
 204         }
 205
 206         if (disallowed_bssid(wpa_s, wpa_s->bssid) ||
 207             disallowed_ssid(wpa_s, ssid->ssid, ssid->ssid_len)) {
 208                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS is disallowed");
 209                 return -1;
 210         }
 211
 212         res = wpas_temp_disabled(wpa_s, ssid);
 213         if (res > 0) {
 214                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is temporarily "
 215                         "disabled for %d second(s)", res);
 216                 return -1;
 217         }
 218
 219         wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
 220                 "current AP");
 221         if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
 222                 u8 wpa_ie[80];
 223                 size_t wpa_ie_len = sizeof(wpa_ie);
 224                 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
 225                                               wpa_ie, &wpa_ie_len) < 0)
 226                         wpa_dbg(wpa_s, MSG_DEBUG, "Could not set WPA suites");
 227         } else {
 228                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
 229         }
 230
 231         if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
 232                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
 233         old_ssid = wpa_s->current_ssid;
 234         wpa_s->current_ssid = ssid;
 235
 236         wpa_supplicant_update_current_bss(wpa_s);
 237
 238         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
 239         wpa_supplicant_initiate_eapol(wpa_s);
 240         if (old_ssid != wpa_s->current_ssid)
 241                 wpas_notify_network_changed(wpa_s);
 242
 243         return 0;
 244 }
 245
 246
 247 void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx)
 248 {
 249         struct wpa_supplicant *wpa_s = eloop_ctx;
 250
 251         if (wpa_s->countermeasures) {
 252                 wpa_s->countermeasures = 0;
 253                 wpa_drv_set_countermeasures(wpa_s, 0);
 254                 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
 255
 256                 /*
 257                  * It is possible that the device is sched scanning, which means
 258                  * that a connection attempt will be done only when we receive
 259                  * scan results. However, in this case, it would be preferable
 260                  * to scan and connect immediately, so cancel the sched_scan and
 261                  * issue a regular scan flow.
 262                  */
 263                 wpa_supplicant_cancel_sched_scan(wpa_s);
 264                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 265         }
 266 }
 267
 268
 269 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
 270 {
 271         int bssid_changed;
 272
 273         wnm_bss_keep_alive_deinit(wpa_s);
 274
 275 #ifdef CONFIG_IBSS_RSN
 276         ibss_rsn_deinit(wpa_s->ibss_rsn);
 277         wpa_s->ibss_rsn = NULL;
 278 #endif /* CONFIG_IBSS_RSN */
 279
 280 #ifdef CONFIG_AP
 281         wpa_supplicant_ap_deinit(wpa_s);
 282 #endif /* CONFIG_AP */
 283
 284         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
 285                 return;
 286
 287         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 288         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 289         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 290         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 291         sme_clear_on_disassoc(wpa_s);
 292         wpa_s->current_bss = NULL;
 293         wpa_s->assoc_freq = 0;
 294
 295         if (bssid_changed)
 296                 wpas_notify_bssid_changed(wpa_s);
 297
 298         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
 299         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 300         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
 301                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 302         wpa_s->ap_ies_from_associnfo = 0;
 303         wpa_s->current_ssid = NULL;
 304         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 305         wpa_s->key_mgmt = 0;
 306
 307         wpas_rrm_reset(wpa_s);
 308         wpa_s->wnmsleep_used = 0;
 309 }
 310
 311
 312 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
 313 {
 314         struct wpa_ie_data ie;
 315         int pmksa_set = -1;
 316         size_t i;
 317
 318         if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
 319             ie.pmkid == NULL)
 320                 return;
 321
 322         for (i = 0; i < ie.num_pmkid; i++) {
 323                 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
 324                                                     ie.pmkid + i * PMKID_LEN,
 325                                                     NULL, NULL, 0);
 326                 if (pmksa_set == 0) {
 327                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol);
 328                         break;
 329                 }
 330         }
 331
 332         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
 333                 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
 334 }
 335
 336
 337 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
 338                                                  union wpa_event_data *data)
 339 {
 340         if (data == NULL) {
 341                 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
 342                         "event");
 343                 return;
 344         }
 345         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
 346                 " index=%d preauth=%d",
 347                 MAC2STR(data->pmkid_candidate.bssid),
 348                 data->pmkid_candidate.index,
 349                 data->pmkid_candidate.preauth);
 350
 351         pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
 352                             data->pmkid_candidate.index,
 353                             data->pmkid_candidate.preauth);
 354 }
 355
 356
 357 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
 358 {
 359         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 360             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
 361                 return 0;
 362
 363 #ifdef IEEE8021X_EAPOL
 364         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
 365             wpa_s->current_ssid &&
 366             !(wpa_s->current_ssid->eapol_flags &
 367               (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 368                EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
 369                 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
 370                  * plaintext or static WEP keys). */
 371                 return 0;
 372         }
 373 #endif /* IEEE8021X_EAPOL */
 374
 375         return 1;
 376 }
 377
 378
 379 /**
 380  * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
 381  * @wpa_s: pointer to wpa_supplicant data
 382  * @ssid: Configuration data for the network
 383  * Returns: 0 on success, -1 on failure
 384  *
 385  * This function is called when starting authentication with a network that is
 386  * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
 387  */
 388 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 389                               struct wpa_ssid *ssid)
 390 {
 391 #ifdef IEEE8021X_EAPOL
 392 #ifdef PCSC_FUNCS
 393         int aka = 0, sim = 0;
 394
 395         if ((ssid != NULL && ssid->eap.pcsc == NULL) ||
 396             wpa_s->scard != NULL || wpa_s->conf->external_sim)
 397                 return 0;
 398
 399         if (ssid == NULL || ssid->eap.eap_methods == NULL) {
 400                 sim = 1;
 401                 aka = 1;
 402         } else {
 403                 struct eap_method_type *eap = ssid->eap.eap_methods;
 404                 while (eap->vendor != EAP_VENDOR_IETF ||
 405                        eap->method != EAP_TYPE_NONE) {
 406                         if (eap->vendor == EAP_VENDOR_IETF) {
 407                                 if (eap->method == EAP_TYPE_SIM)
 408                                         sim = 1;
 409                                 else if (eap->method == EAP_TYPE_AKA ||
 410                                          eap->method == EAP_TYPE_AKA_PRIME)
 411                                         aka = 1;
 412                         }
 413                         eap++;
 414                 }
 415         }
 416
 417         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
 418                 sim = 0;
 419         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL &&
 420             eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME) ==
 421             NULL)
 422                 aka = 0;
 423
 424         if (!sim && !aka) {
 425                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
 426                         "use SIM, but neither EAP-SIM nor EAP-AKA are "
 427                         "enabled");
 428                 return 0;
 429         }
 430
 431         wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
 432                 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
 433
 434         wpa_s->scard = scard_init(wpa_s->conf->pcsc_reader);
 435         if (wpa_s->scard == NULL) {
 436                 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
 437                         "(pcsc-lite)");
 438                 return -1;
 439         }
 440         wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
 441         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
 442 #endif /* PCSC_FUNCS */
 443 #endif /* IEEE8021X_EAPOL */
 444
 445         return 0;
 446 }
 447
 448
 449 #ifndef CONFIG_NO_SCAN_PROCESSING
 450
 451 static int has_wep_key(struct wpa_ssid *ssid)
 452 {
 453         int i;
 454
 455         for (i = 0; i < NUM_WEP_KEYS; i++) {
 456                 if (ssid->wep_key_len[i])
 457                         return 1;
 458         }
 459
 460         return 0;
 461 }
 462
 463
 464 static int wpa_supplicant_match_privacy(struct wpa_bss *bss,
 465                                         struct wpa_ssid *ssid)
 466 {
 467         int privacy = 0;
 468
 469         if (ssid->mixed_cell)
 470                 return 1;
 471
 472 #ifdef CONFIG_WPS
 473         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
 474                 return 1;
 475 #endif /* CONFIG_WPS */
 476
 477         if (has_wep_key(ssid))
 478                 privacy = 1;
 479
 480 #ifdef IEEE8021X_EAPOL
 481         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
 482             ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 483                                  EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
 484                 privacy = 1;
 485 #endif /* IEEE8021X_EAPOL */
 486
 487         if (wpa_key_mgmt_wpa(ssid->key_mgmt))
 488                 privacy = 1;
 489
 490         if (ssid->key_mgmt & WPA_KEY_MGMT_OSEN)
 491                 privacy = 1;
 492
 493         if (bss->caps & IEEE80211_CAP_PRIVACY)
 494                 return privacy;
 495         return !privacy;
 496 }
 497
 498
 499 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
 500                                          struct wpa_ssid *ssid,
 501                                          struct wpa_bss *bss)
 502 {
 503         struct wpa_ie_data ie;
 504         int proto_match = 0;
 505         const u8 *rsn_ie, *wpa_ie;
 506         int ret;
 507         int wep_ok;
 508
 509         ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
 510         if (ret >= 0)
 511                 return ret;
 512
 513         /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
 514         wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 515                 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 516                   ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
 517                  (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
 518
 519         rsn_ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 520         while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
 521                 proto_match++;
 522
 523                 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
 524                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - parse "
 525                                 "failed");
 526                         break;
 527                 }
 528
 529                 if (wep_ok &&
 530                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 531                 {
 532                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 533                                 "in RSN IE");
 534                         return 1;
 535                 }
 536
 537                 if (!(ie.proto & ssid->proto)) {
 538                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - proto "
 539                                 "mismatch");
 540                         break;
 541                 }
 542
 543                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 544                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - PTK "
 545                                 "cipher mismatch");
 546                         break;
 547                 }
 548
 549                 if (!(ie.group_cipher & ssid->group_cipher)) {
 550                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - GTK "
 551                                 "cipher mismatch");
 552                         break;
 553                 }
 554
 555                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 556                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - key mgmt "
 557                                 "mismatch");
 558                         break;
 559                 }
 560
 561 #ifdef CONFIG_IEEE80211W
 562                 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
 563                     wpas_get_ssid_pmf(wpa_s, ssid) ==
 564                     MGMT_FRAME_PROTECTION_REQUIRED) {
 565                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - no mgmt "
 566                                 "frame protection");
 567                         break;
 568                 }
 569 #endif /* CONFIG_IEEE80211W */
 570                 if ((ie.capabilities & WPA_CAPABILITY_MFPR) &&
 571                     wpas_get_ssid_pmf(wpa_s, ssid) ==
 572                     NO_MGMT_FRAME_PROTECTION) {
 573                         wpa_dbg(wpa_s, MSG_DEBUG,
 574                                 "   skip RSN IE - no mgmt frame protection enabled but AP requires it");
 575                         break;
 576                 }
 577
 578                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on RSN IE");
 579                 return 1;
 580         }
 581
 582         wpa_ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 583         while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
 584                 proto_match++;
 585
 586                 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
 587                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - parse "
 588                                 "failed");
 589                         break;
 590                 }
 591
 592                 if (wep_ok &&
 593                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 594                 {
 595                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 596                                 "in WPA IE");
 597                         return 1;
 598                 }
 599
 600                 if (!(ie.proto & ssid->proto)) {
 601                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - proto "
 602                                 "mismatch");
 603                         break;
 604                 }
 605
 606                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 607                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - PTK "
 608                                 "cipher mismatch");
 609                         break;
 610                 }
 611
 612                 if (!(ie.group_cipher & ssid->group_cipher)) {
 613                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - GTK "
 614                                 "cipher mismatch");
 615                         break;
 616                 }
 617
 618                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 619                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - key mgmt "
 620                                 "mismatch");
 621                         break;
 622                 }
 623
 624                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on WPA IE");
 625                 return 1;
 626         }
 627
 628         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && !wpa_ie &&
 629             !rsn_ie) {
 630                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow for non-WPA IEEE 802.1X");
 631                 return 1;
 632         }
 633
 634         if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
 635             wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
 636                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no WPA/RSN proto match");
 637                 return 0;
 638         }
 639
 640         if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) &&
 641             wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE)) {
 642                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in OSEN");
 643                 return 1;
 644         }
 645
 646         if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
 647                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in non-WPA/WPA2");
 648                 return 1;
 649         }
 650
 651         wpa_dbg(wpa_s, MSG_DEBUG, "   reject due to mismatch with "
 652                 "WPA/WPA2");
 653
 654         return 0;
 655 }
 656
 657
 658 static int freq_allowed(int *freqs, int freq)
 659 {
 660         int i;
 661
 662         if (freqs == NULL)
 663                 return 1;
 664
 665         for (i = 0; freqs[i]; i++)
 666                 if (freqs[i] == freq)
 667                         return 1;
 668         return 0;
 669 }
 670
 671
 672 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
 673 {
 674         const struct hostapd_hw_modes *mode = NULL, *modes;
 675         const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES };
 676         const u8 *rate_ie;
 677         int i, j, k;
 678
 679         if (bss->freq == 0)
 680                 return 1; /* Cannot do matching without knowing band */
 681
 682         modes = wpa_s->hw.modes;
 683         if (modes == NULL) {
 684                 /*
 685                  * The driver does not provide any additional information
 686                  * about the utilized hardware, so allow the connection attempt
 687                  * to continue.
 688                  */
 689                 return 1;
 690         }
 691
 692         for (i = 0; i < wpa_s->hw.num_modes; i++) {
 693                 for (j = 0; j < modes[i].num_channels; j++) {
 694                         int freq = modes[i].channels[j].freq;
 695                         if (freq == bss->freq) {
 696                                 if (mode &&
 697                                     mode->mode == HOSTAPD_MODE_IEEE80211G)
 698                                         break; /* do not allow 802.11b replace
 699                                                 * 802.11g */
 700                                 mode = &modes[i];
 701                                 break;
 702                         }
 703                 }
 704         }
 705
 706         if (mode == NULL)
 707                 return 0;
 708
 709         for (i = 0; i < (int) sizeof(scan_ie); i++) {
 710                 rate_ie = wpa_bss_get_ie(bss, scan_ie[i]);
 711                 if (rate_ie == NULL)
 712                         continue;
 713
 714                 for (j = 2; j < rate_ie[1] + 2; j++) {
 715                         int flagged = !!(rate_ie[j] & 0x80);
 716                         int r = (rate_ie[j] & 0x7f) * 5;
 717
 718                         /*
 719                          * IEEE Std 802.11n-2009 7.3.2.2:
 720                          * The new BSS Membership selector value is encoded
 721                          * like a legacy basic rate, but it is not a rate and
 722                          * only indicates if the BSS members are required to
 723                          * support the mandatory features of Clause 20 [HT PHY]
 724                          * in order to join the BSS.
 725                          */
 726                         if (flagged && ((rate_ie[j] & 0x7f) ==
 727                                         BSS_MEMBERSHIP_SELECTOR_HT_PHY)) {
 728                                 if (!ht_supported(mode)) {
 729                                         wpa_dbg(wpa_s, MSG_DEBUG,
 730                                                 "   hardware does not support "
 731                                                 "HT PHY");
 732                                         return 0;
 733                                 }
 734                                 continue;
 735                         }
 736
 737                         /* There's also a VHT selector for 802.11ac */
 738                         if (flagged && ((rate_ie[j] & 0x7f) ==
 739                                         BSS_MEMBERSHIP_SELECTOR_VHT_PHY)) {
 740                                 if (!vht_supported(mode)) {
 741                                         wpa_dbg(wpa_s, MSG_DEBUG,
 742                                                 "   hardware does not support "
 743                                                 "VHT PHY");
 744                                         return 0;
 745                                 }
 746                                 continue;
 747                         }
 748
 749                         if (!flagged)
 750                                 continue;
 751
 752                         /* check for legacy basic rates */
 753                         for (k = 0; k < mode->num_rates; k++) {
 754                                 if (mode->rates[k] == r)
 755                                         break;
 756                         }
 757                         if (k == mode->num_rates) {
 758                                 /*
 759                                  * IEEE Std 802.11-2007 7.3.2.2 demands that in
 760                                  * order to join a BSS all required rates
 761                                  * have to be supported by the hardware.
 762                                  */
 763                                 wpa_dbg(wpa_s, MSG_DEBUG,
 764                                         "   hardware does not support required rate %d.%d Mbps (freq=%d mode==%d num_rates=%d)",
 765                                         r / 10, r % 10,
 766                                         bss->freq, mode->mode, mode->num_rates);
 767                                 return 0;
 768                         }
 769                 }
 770         }
 771
 772         return 1;
 773 }
 774
 775
 776 /*
 777  * Test whether BSS is in an ESS.
 778  * This is done differently in DMG (60 GHz) and non-DMG bands
 779  */
 780 static int bss_is_ess(struct wpa_bss *bss)
 781 {
 782         if (bss_is_dmg(bss)) {
 783                 return (bss->caps & IEEE80211_CAP_DMG_MASK) ==
 784                         IEEE80211_CAP_DMG_AP;
 785         }
 786
 787         return ((bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) ==
 788                 IEEE80211_CAP_ESS);
 789 }
 790
 791
 792 static int match_mac_mask(const u8 *addr_a, const u8 *addr_b, const u8 *mask)
 793 {
 794         size_t i;
 795
 796         for (i = 0; i < ETH_ALEN; i++) {
 797                 if ((addr_a[i] & mask[i]) != (addr_b[i] & mask[i]))
 798                         return 0;
 799         }
 800         return 1;
 801 }
 802
 803
 804 static int addr_in_list(const u8 *addr, const u8 *list, size_t num)
 805 {
 806         size_t i;
 807
 808         for (i = 0; i < num; i++) {
 809                 const u8 *a = list + i * ETH_ALEN * 2;
 810                 const u8 *m = a + ETH_ALEN;
 811
 812                 if (match_mac_mask(a, addr, m))
 813                         return 1;
 814         }
 815         return 0;
 816 }
 817
 818
 819 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
 820                                             int i, struct wpa_bss *bss,
 821                                             struct wpa_ssid *group,
 822                                             int only_first_ssid)
 823 {
 824         u8 wpa_ie_len, rsn_ie_len;
 825         int wpa;
 826         struct wpa_blacklist *e;
 827         const u8 *ie;
 828         struct wpa_ssid *ssid;
 829         int osen;
 830
 831         ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 832         wpa_ie_len = ie ? ie[1] : 0;
 833
 834         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 835         rsn_ie_len = ie ? ie[1] : 0;
 836
 837         ie = wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE);
 838         osen = ie != NULL;
 839
 840         wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
 841                 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d freq=%d %s%s%s",
 842                 i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len),
 843                 wpa_ie_len, rsn_ie_len, bss->caps, bss->level, bss->freq,
 844                 wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "",
 845                 (wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) ||
 846                  wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) ?
 847                 " p2p" : "",
 848                 osen ? " osen=1" : "");
 849
 850         e = wpa_blacklist_get(wpa_s, bss->bssid);
 851         if (e) {
 852                 int limit = 1;
 853                 if (wpa_supplicant_enabled_networks(wpa_s) == 1) {
 854                         /*
 855                          * When only a single network is enabled, we can
 856                          * trigger blacklisting on the first failure. This
 857                          * should not be done with multiple enabled networks to
 858                          * avoid getting forced to move into a worse ESS on
 859                          * single error if there are no other BSSes of the
 860                          * current ESS.
 861                          */
 862                         limit = 0;
 863                 }
 864                 if (e->count > limit) {
 865                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 866                                 "(count=%d limit=%d)", e->count, limit);
 867                         return NULL;
 868                 }
 869         }
 870
 871         if (bss->ssid_len == 0) {
 872                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID not known");
 873                 return NULL;
 874         }
 875
 876         if (disallowed_bssid(wpa_s, bss->bssid)) {
 877                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID disallowed");
 878                 return NULL;
 879         }
 880
 881         if (disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
 882                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID disallowed");
 883                 return NULL;
 884         }
 885
 886         wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
 887
 888         for (ssid = group; ssid; ssid = only_first_ssid ? NULL : ssid->pnext) {
 889                 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
 890                 int res;
 891
 892                 if (wpas_network_disabled(wpa_s, ssid)) {
 893                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled");
 894                         continue;
 895                 }
 896
 897                 res = wpas_temp_disabled(wpa_s, ssid);
 898                 if (res > 0) {
 899                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled "
 900                                 "temporarily for %d second(s)", res);
 901                         continue;
 902                 }
 903
 904 #ifdef CONFIG_WPS
 905                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
 906                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 907                                 "(WPS)");
 908                         continue;
 909                 }
 910
 911                 if (wpa && ssid->ssid_len == 0 &&
 912                     wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 913                         check_ssid = 0;
 914
 915                 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 916                         /* Only allow wildcard SSID match if an AP
 917                          * advertises active WPS operation that matches
 918                          * with our mode. */
 919                         check_ssid = 1;
 920                         if (ssid->ssid_len == 0 &&
 921                             wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 922                                 check_ssid = 0;
 923                 }
 924 #endif /* CONFIG_WPS */
 925
 926                 if (ssid->bssid_set && ssid->ssid_len == 0 &&
 927                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
 928                         check_ssid = 0;
 929
 930                 if (check_ssid &&
 931                     (bss->ssid_len != ssid->ssid_len ||
 932                      os_memcmp(bss->ssid, ssid->ssid, bss->ssid_len) != 0)) {
 933                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID mismatch");
 934                         continue;
 935                 }
 936
 937                 if (ssid->bssid_set &&
 938                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
 939                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID mismatch");
 940                         continue;
 941                 }
 942
 943                 /* check blacklist */
 944                 if (ssid->num_bssid_blacklist &&
 945                     addr_in_list(bss->bssid, ssid->bssid_blacklist,
 946                                  ssid->num_bssid_blacklist)) {
 947                         wpa_dbg(wpa_s, MSG_DEBUG,
 948                                 "   skip - BSSID blacklisted");
 949                         continue;
 950                 }
 951
 952                 /* if there is a whitelist, only accept those APs */
 953                 if (ssid->num_bssid_whitelist &&
 954                     !addr_in_list(bss->bssid, ssid->bssid_whitelist,
 955                                   ssid->num_bssid_whitelist)) {
 956                         wpa_dbg(wpa_s, MSG_DEBUG,
 957                                 "   skip - BSSID not in whitelist");
 958                         continue;
 959                 }
 960
 961                 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
 962                         continue;
 963
 964                 if (!osen && !wpa &&
 965                     !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 966                     !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
 967                     !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
 968                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-WPA network "
 969                                 "not allowed");
 970                         continue;
 971                 }
 972
 973                 if (wpa && !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 974                     has_wep_key(ssid)) {
 975                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - ignore WPA/WPA2 AP for WEP network block");
 976                         continue;
 977                 }
 978
 979                 if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) && !osen) {
 980                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-OSEN network "
 981                                 "not allowed");
 982                         continue;
 983                 }
 984
 985                 if (!wpa_supplicant_match_privacy(bss, ssid)) {
 986                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - privacy "
 987                                 "mismatch");
 988                         continue;
 989                 }
 990
 991                 if (!bss_is_ess(bss)) {
 992                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - not ESS network");
 993                         continue;
 994                 }
 995
 996                 if (!freq_allowed(ssid->freq_list, bss->freq)) {
 997                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - frequency not "
 998                                 "allowed");
 999                         continue;
1000                 }
1001
1002                 if (!rate_match(wpa_s, bss)) {
1003                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - rate sets do "
1004                                 "not match");
1005                         continue;
1006                 }
1007
1008 #ifdef CONFIG_P2P
1009                 if (ssid->p2p_group &&
1010                     !wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
1011                     !wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
1012                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P IE seen");
1013                         continue;
1014                 }
1015
1016                 if (!is_zero_ether_addr(ssid->go_p2p_dev_addr)) {
1017                         struct wpabuf *p2p_ie;
1018                         u8 dev_addr[ETH_ALEN];
1019
1020                         ie = wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE);
1021                         if (ie == NULL) {
1022                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P element");
1023                                 continue;
1024                         }
1025                         p2p_ie = wpa_bss_get_vendor_ie_multi(
1026                                 bss, P2P_IE_VENDOR_TYPE);
1027                         if (p2p_ie == NULL) {
1028                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - could not fetch P2P element");
1029                                 continue;
1030                         }
1031
1032                         if (p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr) < 0
1033                             || os_memcmp(dev_addr, ssid->go_p2p_dev_addr,
1034                                          ETH_ALEN) != 0) {
1035                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no matching GO P2P Device Address in P2P element");
1036                                 wpabuf_free(p2p_ie);
1037                                 continue;
1038                         }
1039                         wpabuf_free(p2p_ie);
1040                 }
1041
1042                 /*
1043                  * TODO: skip the AP if its P2P IE has Group Formation
1044                  * bit set in the P2P Group Capability Bitmap and we
1045                  * are not in Group Formation with that device.
1046                  */
1047 #endif /* CONFIG_P2P */
1048
1049                 if (os_reltime_before(&bss->last_update, &wpa_s->scan_min_time))
1050                 {
1051                         struct os_reltime diff;
1052
1053                         os_reltime_sub(&wpa_s->scan_min_time,
1054                                        &bss->last_update, &diff);
1055                         wpa_dbg(wpa_s, MSG_DEBUG,
1056                                 "   skip - scan result not recent enough (%u.%06u seconds too old)",
1057                                 (unsigned int) diff.sec,
1058                                 (unsigned int) diff.usec);
1059                         continue;
1060                 }
1061
1062                 /* Matching configuration found */
1063                 return ssid;
1064         }
1065
1066         /* No matching configuration found */
1067         return NULL;
1068 }
1069
1070
1071 static struct wpa_bss *
1072 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
1073                           struct wpa_ssid *group,
1074                           struct wpa_ssid **selected_ssid,
1075                           int only_first_ssid)
1076 {
1077         unsigned int i;
1078
1079         if (only_first_ssid)
1080                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to find BSS matching pre-selected network id=%d",
1081                         group->id);
1082         else
1083                 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
1084                         group->priority);
1085
1086         for (i = 0; i < wpa_s->last_scan_res_used; i++) {
1087                 struct wpa_bss *bss = wpa_s->last_scan_res[i];
1088                 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group,
1089                                                     only_first_ssid);
1090                 if (!*selected_ssid)
1091                         continue;
1092                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected BSS " MACSTR
1093                         " ssid='%s'",
1094                         MAC2STR(bss->bssid),
1095                         wpa_ssid_txt(bss->ssid, bss->ssid_len));
1096                 return bss;
1097         }
1098
1099         return NULL;
1100 }
1101
1102
1103 struct wpa_bss * wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
1104                                              struct wpa_ssid **selected_ssid)
1105 {
1106         struct wpa_bss *selected = NULL;
1107         int prio;
1108         struct wpa_ssid *next_ssid = NULL;
1109         struct wpa_ssid *ssid;
1110
1111         if (wpa_s->last_scan_res == NULL ||
1112             wpa_s->last_scan_res_used == 0)
1113                 return NULL; /* no scan results from last update */
1114
1115         if (wpa_s->next_ssid) {
1116                 /* check that next_ssid is still valid */
1117                 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1118                         if (ssid == wpa_s->next_ssid)
1119                                 break;
1120                 }
1121                 next_ssid = ssid;
1122                 wpa_s->next_ssid = NULL;
1123         }
1124
1125         while (selected == NULL) {
1126                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1127                         if (next_ssid && next_ssid->priority ==
1128                             wpa_s->conf->pssid[prio]->priority) {
1129                                 selected = wpa_supplicant_select_bss(
1130                                         wpa_s, next_ssid, selected_ssid, 1);
1131                                 if (selected)
1132                                         break;
1133                         }
1134                         selected = wpa_supplicant_select_bss(
1135                                 wpa_s, wpa_s->conf->pssid[prio],
1136                                 selected_ssid, 0);
1137                         if (selected)
1138                                 break;
1139                 }
1140
1141                 if (selected == NULL && wpa_s->blacklist &&
1142                     !wpa_s->countermeasures) {
1143                         wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
1144                                 "blacklist and try again");
1145                         wpa_blacklist_clear(wpa_s);
1146                         wpa_s->blacklist_cleared++;
1147                 } else if (selected == NULL)
1148                         break;
1149         }
1150
1151         ssid = *selected_ssid;
1152         if (selected && ssid && ssid->mem_only_psk && !ssid->psk_set &&
1153             !ssid->passphrase && !ssid->ext_psk) {
1154                 const char *field_name, *txt = NULL;
1155
1156                 wpa_dbg(wpa_s, MSG_DEBUG,
1157                         "PSK/passphrase not yet available for the selected network");
1158
1159                 wpas_notify_network_request(wpa_s, ssid,
1160                                             WPA_CTRL_REQ_PSK_PASSPHRASE, NULL);
1161
1162                 field_name = wpa_supplicant_ctrl_req_to_string(
1163                         WPA_CTRL_REQ_PSK_PASSPHRASE, NULL, &txt);
1164                 if (field_name == NULL)
1165                         return NULL;
1166
1167                 wpas_send_ctrl_req(wpa_s, ssid, field_name, txt);
1168
1169                 selected = NULL;
1170         }
1171
1172         return selected;
1173 }
1174
1175
1176 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
1177                                         int timeout_sec, int timeout_usec)
1178 {
1179         if (!wpa_supplicant_enabled_networks(wpa_s)) {
1180                 /*
1181                  * No networks are enabled; short-circuit request so
1182                  * we don't wait timeout seconds before transitioning
1183                  * to INACTIVE state.
1184                  */
1185                 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request "
1186                         "since there are no enabled networks");
1187                 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
1188                 return;
1189         }
1190
1191         wpa_s->scan_for_connection = 1;
1192         wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
1193 }
1194
1195
1196 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
1197                            struct wpa_bss *selected,
1198                            struct wpa_ssid *ssid)
1199 {
1200         if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
1201                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
1202                         "PBC session overlap");
1203                 wpas_notify_wps_event_pbc_overlap(wpa_s);
1204 #ifdef CONFIG_P2P
1205                 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
1206                     wpa_s->p2p_in_provisioning) {
1207                         eloop_register_timeout(0, 0, wpas_p2p_pbc_overlap_cb,
1208                                                wpa_s, NULL);
1209                         return -1;
1210                 }
1211 #endif /* CONFIG_P2P */
1212
1213 #ifdef CONFIG_WPS
1214                 wpas_wps_pbc_overlap(wpa_s);
1215                 wpas_wps_cancel(wpa_s);
1216 #endif /* CONFIG_WPS */
1217                 return -1;
1218         }
1219
1220         wpa_msg(wpa_s, MSG_DEBUG,
1221                 "Considering connect request: reassociate: %d  selected: "
1222                 MACSTR "  bssid: " MACSTR "  pending: " MACSTR
1223                 "  wpa_state: %s  ssid=%p  current_ssid=%p",
1224                 wpa_s->reassociate, MAC2STR(selected->bssid),
1225                 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
1226                 wpa_supplicant_state_txt(wpa_s->wpa_state),
1227                 ssid, wpa_s->current_ssid);
1228
1229         /*
1230          * Do not trigger new association unless the BSSID has changed or if
1231          * reassociation is requested. If we are in process of associating with
1232          * the selected BSSID, do not trigger new attempt.
1233          */
1234         if (wpa_s->reassociate ||
1235             (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
1236              ((wpa_s->wpa_state != WPA_ASSOCIATING &&
1237                wpa_s->wpa_state != WPA_AUTHENTICATING) ||
1238               (!is_zero_ether_addr(wpa_s->pending_bssid) &&
1239                os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
1240                0) ||
1241               (is_zero_ether_addr(wpa_s->pending_bssid) &&
1242                ssid != wpa_s->current_ssid)))) {
1243                 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
1244                         wpa_supplicant_req_new_scan(wpa_s, 10, 0);
1245                         return 0;
1246                 }
1247                 wpa_msg(wpa_s, MSG_DEBUG, "Request association with " MACSTR,
1248                         MAC2STR(selected->bssid));
1249                 wpa_supplicant_associate(wpa_s, selected, ssid);
1250         } else {
1251                 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated or trying to "
1252                         "connect with the selected AP");
1253         }
1254
1255         return 0;
1256 }
1257
1258
1259 static struct wpa_ssid *
1260 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
1261 {
1262         int prio;
1263         struct wpa_ssid *ssid;
1264
1265         for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1266                 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
1267                 {
1268                         if (wpas_network_disabled(wpa_s, ssid))
1269                                 continue;
1270                         if (ssid->mode == IEEE80211_MODE_IBSS ||
1271                             ssid->mode == IEEE80211_MODE_AP ||
1272                             ssid->mode == IEEE80211_MODE_MESH)
1273                                 return ssid;
1274                 }
1275         }
1276         return NULL;
1277 }
1278
1279
1280 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
1281  * on BSS added and BSS changed events */
1282 static void wpa_supplicant_rsn_preauth_scan_results(
1283         struct wpa_supplicant *wpa_s)
1284 {
1285         struct wpa_bss *bss;
1286
1287         if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
1288                 return;
1289
1290         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1291                 const u8 *ssid, *rsn;
1292
1293                 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
1294                 if (ssid == NULL)
1295                         continue;
1296
1297                 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1298                 if (rsn == NULL)
1299                         continue;
1300
1301                 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
1302         }
1303
1304 }
1305
1306
1307 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
1308                                        struct wpa_bss *selected,
1309                                        struct wpa_ssid *ssid)
1310 {
1311         struct wpa_bss *current_bss = NULL;
1312 #ifndef CONFIG_NO_ROAMING
1313         int min_diff;
1314 #endif /* CONFIG_NO_ROAMING */
1315
1316         if (wpa_s->reassociate)
1317                 return 1; /* explicit request to reassociate */
1318         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1319                 return 1; /* we are not associated; continue */
1320         if (wpa_s->current_ssid == NULL)
1321                 return 1; /* unknown current SSID */
1322         if (wpa_s->current_ssid != ssid)
1323                 return 1; /* different network block */
1324
1325         if (wpas_driver_bss_selection(wpa_s))
1326                 return 0; /* Driver-based roaming */
1327
1328         if (wpa_s->current_ssid->ssid)
1329                 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid,
1330                                           wpa_s->current_ssid->ssid,
1331                                           wpa_s->current_ssid->ssid_len);
1332         if (!current_bss)
1333                 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
1334
1335         if (!current_bss)
1336                 return 1; /* current BSS not seen in scan results */
1337
1338         if (current_bss == selected)
1339                 return 0;
1340
1341         if (selected->last_update_idx > current_bss->last_update_idx)
1342                 return 1; /* current BSS not seen in the last scan */
1343
1344 #ifndef CONFIG_NO_ROAMING
1345         wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
1346         wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR
1347                 " level=%d snr=%d est_throughput=%u",
1348                 MAC2STR(current_bss->bssid), current_bss->level,
1349                 current_bss->snr, current_bss->est_throughput);
1350         wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR
1351                 " level=%d snr=%d est_throughput=%u",
1352                 MAC2STR(selected->bssid), selected->level,
1353                 selected->snr, selected->est_throughput);
1354
1355         if (wpa_s->current_ssid->bssid_set &&
1356             os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
1357             0) {
1358                 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
1359                         "has preferred BSSID");
1360                 return 1;
1361         }
1362
1363         if (selected->est_throughput > current_bss->est_throughput + 5000) {
1364                 wpa_dbg(wpa_s, MSG_DEBUG,
1365                         "Allow reassociation - selected BSS has better estimated throughput");
1366                 return 1;
1367         }
1368
1369         if (current_bss->level < 0 && current_bss->level > selected->level) {
1370                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better "
1371                         "signal level");
1372                 return 0;
1373         }
1374
1375         min_diff = 2;
1376         if (current_bss->level < 0) {
1377                 if (current_bss->level < -85)
1378                         min_diff = 1;
1379                 else if (current_bss->level < -80)
1380                         min_diff = 2;
1381                 else if (current_bss->level < -75)
1382                         min_diff = 3;
1383                 else if (current_bss->level < -70)
1384                         min_diff = 4;
1385                 else
1386                         min_diff = 5;
1387         }
1388         if (abs(current_bss->level - selected->level) < min_diff) {
1389                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
1390                         "in signal level");
1391                 return 0;
1392         }
1393
1394         return 1;
1395 #else /* CONFIG_NO_ROAMING */
1396         return 0;
1397 #endif /* CONFIG_NO_ROAMING */
1398 }
1399
1400
1401 /* Return != 0 if no scan results could be fetched or if scan results should not
1402  * be shared with other virtual interfaces. */
1403 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1404                                               union wpa_event_data *data,
1405                                               int own_request)
1406 {
1407         struct wpa_scan_results *scan_res = NULL;
1408         int ret = 0;
1409         int ap = 0;
1410 #ifndef CONFIG_NO_RANDOM_POOL
1411         size_t i, num;
1412 #endif /* CONFIG_NO_RANDOM_POOL */
1413
1414 #ifdef CONFIG_AP
1415         if (wpa_s->ap_iface)
1416                 ap = 1;
1417 #endif /* CONFIG_AP */
1418
1419         wpa_supplicant_notify_scanning(wpa_s, 0);
1420
1421         scan_res = wpa_supplicant_get_scan_results(wpa_s,
1422                                                    data ? &data->scan_info :
1423                                                    NULL, 1);
1424         if (scan_res == NULL) {
1425                 if (wpa_s->conf->ap_scan == 2 || ap ||
1426                     wpa_s->scan_res_handler == scan_only_handler)
1427                         return -1;
1428                 if (!own_request)
1429                         return -1;
1430                 if (data && data->scan_info.external_scan)
1431                         return -1;
1432                 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1433                         "scanning again");
1434                 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1435                 ret = -1;
1436                 goto scan_work_done;
1437         }
1438
1439 #ifndef CONFIG_NO_RANDOM_POOL
1440         num = scan_res->num;
1441         if (num > 10)
1442                 num = 10;
1443         for (i = 0; i < num; i++) {
1444                 u8 buf[5];
1445                 struct wpa_scan_res *res = scan_res->res[i];
1446                 buf[0] = res->bssid[5];
1447                 buf[1] = res->qual & 0xff;
1448                 buf[2] = res->noise & 0xff;
1449                 buf[3] = res->level & 0xff;
1450                 buf[4] = res->tsf & 0xff;
1451                 random_add_randomness(buf, sizeof(buf));
1452         }
1453 #endif /* CONFIG_NO_RANDOM_POOL */
1454
1455         if (own_request && wpa_s->scan_res_handler &&
1456             !(data && data->scan_info.external_scan)) {
1457                 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1458                                          struct wpa_scan_results *scan_res);
1459
1460                 scan_res_handler = wpa_s->scan_res_handler;
1461                 wpa_s->scan_res_handler = NULL;
1462                 scan_res_handler(wpa_s, scan_res);
1463                 ret = -2;
1464                 goto scan_work_done;
1465         }
1466
1467         if (ap) {
1468                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1469 #ifdef CONFIG_AP
1470                 if (wpa_s->ap_iface->scan_cb)
1471                         wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1472 #endif /* CONFIG_AP */
1473                 goto scan_work_done;
1474         }
1475
1476         wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available (own=%u ext=%u)",
1477                 wpa_s->own_scan_running,
1478                 data ? data->scan_info.external_scan : 0);
1479         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
1480             wpa_s->manual_scan_use_id && wpa_s->own_scan_running &&
1481             own_request && !(data && data->scan_info.external_scan)) {
1482                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS "id=%u",
1483                              wpa_s->manual_scan_id);
1484                 wpa_s->manual_scan_use_id = 0;
1485         } else {
1486                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1487         }
1488         wpas_notify_scan_results(wpa_s);
1489
1490         wpas_notify_scan_done(wpa_s, 1);
1491
1492         if (data && data->scan_info.external_scan) {
1493                 wpa_dbg(wpa_s, MSG_DEBUG, "Do not use results from externally requested scan operation for network selection");
1494                 wpa_scan_results_free(scan_res);
1495                 return 0;
1496         }
1497
1498         if (wnm_scan_process(wpa_s, 1) > 0)
1499                 goto scan_work_done;
1500
1501         if (sme_proc_obss_scan(wpa_s) > 0)
1502                 goto scan_work_done;
1503
1504         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s)))
1505                 goto scan_work_done;
1506
1507         if (autoscan_notify_scan(wpa_s, scan_res))
1508                 goto scan_work_done;
1509
1510         if (wpa_s->disconnected) {
1511                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1512                 goto scan_work_done;
1513         }
1514
1515         if (!wpas_driver_bss_selection(wpa_s) &&
1516             bgscan_notify_scan(wpa_s, scan_res) == 1)
1517                 goto scan_work_done;
1518
1519         wpas_wps_update_ap_info(wpa_s, scan_res);
1520
1521         if (wpa_s->wpa_state >= WPA_AUTHENTICATING &&
1522             wpa_s->wpa_state < WPA_COMPLETED)
1523                 goto scan_work_done;
1524
1525         wpa_scan_results_free(scan_res);
1526
1527         if (own_request && wpa_s->scan_work) {
1528                 struct wpa_radio_work *work = wpa_s->scan_work;
1529                 wpa_s->scan_work = NULL;
1530                 radio_work_done(work);
1531         }
1532
1533         return wpas_select_network_from_last_scan(wpa_s, 1, own_request);
1534
1535 scan_work_done:
1536         wpa_scan_results_free(scan_res);
1537         if (own_request && wpa_s->scan_work) {
1538                 struct wpa_radio_work *work = wpa_s->scan_work;
1539                 wpa_s->scan_work = NULL;
1540                 radio_work_done(work);
1541         }
1542         return ret;
1543 }
1544
1545
1546 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
1547                                               int new_scan, int own_request)
1548 {
1549         struct wpa_bss *selected;
1550         struct wpa_ssid *ssid = NULL;
1551         int time_to_reenable = wpas_reenabled_network_time(wpa_s);
1552
1553         if (time_to_reenable > 0) {
1554                 wpa_dbg(wpa_s, MSG_DEBUG,
1555                         "Postpone network selection by %d seconds since all networks are disabled",
1556                         time_to_reenable);
1557                 eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL);
1558                 eloop_register_timeout(time_to_reenable, 0,
1559                                        wpas_network_reenabled, wpa_s, NULL);
1560                 return 0;
1561         }
1562
1563         if (wpa_s->p2p_mgmt)
1564                 return 0; /* no normal connection on p2p_mgmt interface */
1565
1566         selected = wpa_supplicant_pick_network(wpa_s, &ssid);
1567
1568         if (selected) {
1569                 int skip;
1570                 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid);
1571                 if (skip) {
1572                         if (new_scan)
1573                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1574                         return 0;
1575                 }
1576
1577                 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1578                         wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1579                         return -1;
1580                 }
1581                 if (new_scan)
1582                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1583                 /*
1584                  * Do not notify other virtual radios of scan results since we do not
1585                  * want them to start other associations at the same time.
1586                  */
1587                 return 1;
1588         } else {
1589 #ifdef CONFIG_MESH
1590                 if (wpa_s->ifmsh) {
1591                         wpa_msg(wpa_s, MSG_INFO,
1592                                 "Avoiding join because we already joined a mesh group");
1593                         return 0;
1594                 }
1595 #endif /* CONFIG_MESH */
1596                 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1597                 ssid = wpa_supplicant_pick_new_network(wpa_s);
1598                 if (ssid) {
1599                         wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1600                         wpa_supplicant_associate(wpa_s, NULL, ssid);
1601                         if (new_scan)
1602                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1603                 } else if (own_request) {
1604                         /*
1605                          * No SSID found. If SCAN results are as a result of
1606                          * own scan request and not due to a scan request on
1607                          * another shared interface, try another scan.
1608                          */
1609                         int timeout_sec = wpa_s->scan_interval;
1610                         int timeout_usec = 0;
1611 #ifdef CONFIG_P2P
1612                         int res;
1613
1614                         res = wpas_p2p_scan_no_go_seen(wpa_s);
1615                         if (res == 2)
1616                                 return 2;
1617                         if (res == 1)
1618                                 return 0;
1619
1620                         if (wpa_s->p2p_in_provisioning ||
1621                             wpa_s->show_group_started ||
1622                             wpa_s->p2p_in_invitation) {
1623                                 /*
1624                                  * Use shorter wait during P2P Provisioning
1625                                  * state and during P2P join-a-group operation
1626                                  * to speed up group formation.
1627                                  */
1628                                 timeout_sec = 0;
1629                                 timeout_usec = 250000;
1630                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1631                                                             timeout_usec);
1632                                 return 0;
1633                         }
1634 #endif /* CONFIG_P2P */
1635 #ifdef CONFIG_INTERWORKING
1636                         if (wpa_s->conf->auto_interworking &&
1637                             wpa_s->conf->interworking &&
1638                             wpa_s->conf->cred) {
1639                                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: "
1640                                         "start ANQP fetch since no matching "
1641                                         "networks found");
1642                                 wpa_s->network_select = 1;
1643                                 wpa_s->auto_network_select = 1;
1644                                 interworking_start_fetch_anqp(wpa_s);
1645                                 return 1;
1646                         }
1647 #endif /* CONFIG_INTERWORKING */
1648 #ifdef CONFIG_WPS
1649                         if (wpa_s->after_wps > 0 || wpas_wps_searching(wpa_s)) {
1650                                 wpa_dbg(wpa_s, MSG_DEBUG, "Use shorter wait during WPS processing");
1651                                 timeout_sec = 0;
1652                                 timeout_usec = 500000;
1653                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1654                                                             timeout_usec);
1655                                 return 0;
1656                         }
1657 #endif /* CONFIG_WPS */
1658                         if (wpa_supplicant_req_sched_scan(wpa_s))
1659                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1660                                                             timeout_usec);
1661
1662                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1663                                      WPA_EVENT_NETWORK_NOT_FOUND);
1664                 }
1665         }
1666         return 0;
1667 }
1668
1669
1670 static int wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1671                                              union wpa_event_data *data)
1672 {
1673         struct wpa_supplicant *ifs;
1674         int res;
1675
1676         res = _wpa_supplicant_event_scan_results(wpa_s, data, 1);
1677         if (res == 2) {
1678                 /*
1679                  * Interface may have been removed, so must not dereference
1680                  * wpa_s after this.
1681                  */
1682                 return 1;
1683         }
1684         if (res != 0) {
1685                 /*
1686                  * If no scan results could be fetched, then no need to
1687                  * notify those interfaces that did not actually request
1688                  * this scan. Similarly, if scan results started a new operation on this
1689                  * interface, do not notify other interfaces to avoid concurrent
1690                  * operations during a connection attempt.
1691                  */
1692                 return 0;
1693         }
1694
1695         /*
1696          * Check other interfaces to see if they share the same radio. If
1697          * so, they get updated with this same scan info.
1698          */
1699         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
1700                          radio_list) {
1701                 if (ifs != wpa_s) {
1702                         wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1703                                    "sibling", ifs->ifname);
1704                         _wpa_supplicant_event_scan_results(ifs, data, 0);
1705                 }
1706         }
1707
1708         return 0;
1709 }
1710
1711 #endif /* CONFIG_NO_SCAN_PROCESSING */
1712
1713
1714 int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s)
1715 {
1716 #ifdef CONFIG_NO_SCAN_PROCESSING
1717         return -1;
1718 #else /* CONFIG_NO_SCAN_PROCESSING */
1719         struct os_reltime now;
1720
1721         if (wpa_s->last_scan_res_used == 0)
1722                 return -1;
1723
1724         os_get_reltime(&now);
1725         if (os_reltime_expired(&now, &wpa_s->last_scan, 5)) {
1726                 wpa_printf(MSG_DEBUG, "Fast associate: Old scan results");
1727                 return -1;
1728         }
1729
1730         return wpas_select_network_from_last_scan(wpa_s, 0, 1);
1731 #endif /* CONFIG_NO_SCAN_PROCESSING */
1732 }
1733
1734 #ifdef CONFIG_WNM
1735
1736 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx)
1737 {
1738         struct wpa_supplicant *wpa_s = eloop_ctx;
1739
1740         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1741                 return;
1742
1743         if (!wpa_s->no_keep_alive) {
1744                 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR,
1745                            MAC2STR(wpa_s->bssid));
1746                 /* TODO: could skip this if normal data traffic has been sent */
1747                 /* TODO: Consider using some more appropriate data frame for
1748                  * this */
1749                 if (wpa_s->l2)
1750                         l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800,
1751                                        (u8 *) "", 0);
1752         }
1753
1754 #ifdef CONFIG_SME
1755         if (wpa_s->sme.bss_max_idle_period) {
1756                 unsigned int msec;
1757                 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */
1758                 if (msec > 100)
1759                         msec -= 100;
1760                 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1761                                        wnm_bss_keep_alive, wpa_s, NULL);
1762         }
1763 #endif /* CONFIG_SME */
1764 }
1765
1766
1767 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s,
1768                                    const u8 *ies, size_t ies_len)
1769 {
1770         struct ieee802_11_elems elems;
1771
1772         if (ies == NULL)
1773                 return;
1774
1775         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1776                 return;
1777
1778 #ifdef CONFIG_SME
1779         if (elems.bss_max_idle_period) {
1780                 unsigned int msec;
1781                 wpa_s->sme.bss_max_idle_period =
1782                         WPA_GET_LE16(elems.bss_max_idle_period);
1783                 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 "
1784                            "TU)%s", wpa_s->sme.bss_max_idle_period,
1785                            (elems.bss_max_idle_period[2] & 0x01) ?
1786                            " (protected keep-live required)" : "");
1787                 if (wpa_s->sme.bss_max_idle_period == 0)
1788                         wpa_s->sme.bss_max_idle_period = 1;
1789                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
1790                         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1791                          /* msec times 1000 */
1792                         msec = wpa_s->sme.bss_max_idle_period * 1024;
1793                         if (msec > 100)
1794                                 msec -= 100;
1795                         eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1796                                                wnm_bss_keep_alive, wpa_s,
1797                                                NULL);
1798                 }
1799         }
1800 #endif /* CONFIG_SME */
1801 }
1802
1803 #endif /* CONFIG_WNM */
1804
1805
1806 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s)
1807 {
1808 #ifdef CONFIG_WNM
1809         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1810 #endif /* CONFIG_WNM */
1811 }
1812
1813
1814 #ifdef CONFIG_INTERWORKING
1815
1816 static int wpas_qos_map_set(struct wpa_supplicant *wpa_s, const u8 *qos_map,
1817                             size_t len)
1818 {
1819         int res;
1820
1821         wpa_hexdump(MSG_DEBUG, "Interworking: QoS Map Set", qos_map, len);
1822         res = wpa_drv_set_qos_map(wpa_s, qos_map, len);
1823         if (res) {
1824                 wpa_printf(MSG_DEBUG, "Interworking: Failed to configure QoS Map Set to the driver");
1825         }
1826
1827         return res;
1828 }
1829
1830
1831 static void interworking_process_assoc_resp(struct wpa_supplicant *wpa_s,
1832                                             const u8 *ies, size_t ies_len)
1833 {
1834         struct ieee802_11_elems elems;
1835
1836         if (ies == NULL)
1837                 return;
1838
1839         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1840                 return;
1841
1842         if (elems.qos_map_set) {
1843                 wpas_qos_map_set(wpa_s, elems.qos_map_set,
1844                                  elems.qos_map_set_len);
1845         }
1846 }
1847
1848 #endif /* CONFIG_INTERWORKING */
1849
1850
1851 #ifdef CONFIG_FST
1852 static int wpas_fst_update_mbie(struct wpa_supplicant *wpa_s,
1853                                 const u8 *ie, size_t ie_len)
1854 {
1855         struct mb_ies_info mb_ies;
1856
1857         if (!ie || !ie_len || !wpa_s->fst)
1858             return -ENOENT;
1859
1860         os_memset(&mb_ies, 0, sizeof(mb_ies));
1861
1862         while (ie_len >= 2 && mb_ies.nof_ies < MAX_NOF_MB_IES_SUPPORTED) {
1863                 size_t len;
1864
1865                 len = 2 + ie[1];
1866                 if (len > ie_len) {
1867                         wpa_hexdump(MSG_DEBUG, "FST: Truncated IE found",
1868                                     ie, ie_len);
1869                         break;
1870                 }
1871
1872                 if (ie[0] == WLAN_EID_MULTI_BAND) {
1873                         wpa_printf(MSG_DEBUG, "MB IE of %u bytes found",
1874                                    (unsigned int) len);
1875                         mb_ies.ies[mb_ies.nof_ies].ie = ie + 2;
1876                         mb_ies.ies[mb_ies.nof_ies].ie_len = len - 2;
1877                         mb_ies.nof_ies++;
1878                 }
1879
1880                 ie_len -= len;
1881                 ie += len;
1882         }
1883
1884         if (mb_ies.nof_ies > 0) {
1885                 wpabuf_free(wpa_s->received_mb_ies);
1886                 wpa_s->received_mb_ies = mb_ies_by_info(&mb_ies);
1887                 return 0;
1888         }
1889
1890         return -ENOENT;
1891 }
1892 #endif /* CONFIG_FST */
1893
1894
1895 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1896                                           union wpa_event_data *data)
1897 {
1898         int l, len, found = 0, wpa_found, rsn_found;
1899         const u8 *p;
1900 #ifdef CONFIG_IEEE80211R
1901         u8 bssid[ETH_ALEN];
1902 #endif /* CONFIG_IEEE80211R */
1903
1904         wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1905         if (data->assoc_info.req_ies)
1906                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1907                             data->assoc_info.req_ies_len);
1908         if (data->assoc_info.resp_ies) {
1909                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1910                             data->assoc_info.resp_ies_len);
1911 #ifdef CONFIG_TDLS
1912                 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1913                                         data->assoc_info.resp_ies_len);
1914 #endif /* CONFIG_TDLS */
1915 #ifdef CONFIG_WNM
1916                 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1917                                        data->assoc_info.resp_ies_len);
1918 #endif /* CONFIG_WNM */
1919 #ifdef CONFIG_INTERWORKING
1920                 interworking_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1921                                                 data->assoc_info.resp_ies_len);
1922 #endif /* CONFIG_INTERWORKING */
1923         }
1924         if (data->assoc_info.beacon_ies)
1925                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1926                             data->assoc_info.beacon_ies,
1927                             data->assoc_info.beacon_ies_len);
1928         if (data->assoc_info.freq)
1929                 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1930                         data->assoc_info.freq);
1931
1932         p = data->assoc_info.req_ies;
1933         l = data->assoc_info.req_ies_len;
1934
1935         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1936         while (p && l >= 2) {
1937                 len = p[1] + 2;
1938                 if (len > l) {
1939                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1940                                     p, l);
1941                         break;
1942                 }
1943                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1944                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1945                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1946                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1947                                 break;
1948                         found = 1;
1949                         wpa_find_assoc_pmkid(wpa_s);
1950                         break;
1951                 }
1952                 l -= len;
1953                 p += len;
1954         }
1955         if (!found && data->assoc_info.req_ies)
1956                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1957
1958 #ifdef CONFIG_IEEE80211R
1959 #ifdef CONFIG_SME
1960         if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1961                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1962                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1963                                                  data->assoc_info.resp_ies,
1964                                                  data->assoc_info.resp_ies_len,
1965                                                  bssid) < 0) {
1966                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1967                                 "Reassociation Response failed");
1968                         wpa_supplicant_deauthenticate(
1969                                 wpa_s, WLAN_REASON_INVALID_IE);
1970                         return -1;
1971                 }
1972         }
1973
1974         p = data->assoc_info.resp_ies;
1975         l = data->assoc_info.resp_ies_len;
1976
1977 #ifdef CONFIG_WPS_STRICT
1978         if (p && wpa_s->current_ssid &&
1979             wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1980                 struct wpabuf *wps;
1981                 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1982                 if (wps == NULL) {
1983                         wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1984                                 "include WPS IE in (Re)Association Response");
1985                         return -1;
1986                 }
1987
1988                 if (wps_validate_assoc_resp(wps) < 0) {
1989                         wpabuf_free(wps);
1990                         wpa_supplicant_deauthenticate(
1991                                 wpa_s, WLAN_REASON_INVALID_IE);
1992                         return -1;
1993                 }
1994                 wpabuf_free(wps);
1995         }
1996 #endif /* CONFIG_WPS_STRICT */
1997
1998         /* Go through the IEs and make a copy of the MDIE, if present. */
1999         while (p && l >= 2) {
2000                 len = p[1] + 2;
2001                 if (len > l) {
2002                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
2003                                     p, l);
2004                         break;
2005                 }
2006                 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
2007                     p[1] >= MOBILITY_DOMAIN_ID_LEN) {
2008                         wpa_s->sme.ft_used = 1;
2009                         os_memcpy(wpa_s->sme.mobility_domain, p + 2,
2010                                   MOBILITY_DOMAIN_ID_LEN);
2011                         break;
2012                 }
2013                 l -= len;
2014                 p += len;
2015         }
2016 #endif /* CONFIG_SME */
2017
2018         /* Process FT when SME is in the driver */
2019         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
2020             wpa_ft_is_completed(wpa_s->wpa)) {
2021                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
2022                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
2023                                                  data->assoc_info.resp_ies,
2024                                                  data->assoc_info.resp_ies_len,
2025                                                  bssid) < 0) {
2026                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
2027                                 "Reassociation Response failed");
2028                         wpa_supplicant_deauthenticate(
2029                                 wpa_s, WLAN_REASON_INVALID_IE);
2030                         return -1;
2031                 }
2032                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Reassociation Response done");
2033         }
2034
2035         wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
2036                              data->assoc_info.resp_ies_len);
2037 #endif /* CONFIG_IEEE80211R */
2038
2039         /* WPA/RSN IE from Beacon/ProbeResp */
2040         p = data->assoc_info.beacon_ies;
2041         l = data->assoc_info.beacon_ies_len;
2042
2043         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
2044          */
2045         wpa_found = rsn_found = 0;
2046         while (p && l >= 2) {
2047                 len = p[1] + 2;
2048                 if (len > l) {
2049                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
2050                                     p, l);
2051                         break;
2052                 }
2053                 if (!wpa_found &&
2054                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
2055                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
2056                         wpa_found = 1;
2057                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
2058                 }
2059
2060                 if (!rsn_found &&
2061                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
2062                         rsn_found = 1;
2063                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
2064                 }
2065
2066                 l -= len;
2067                 p += len;
2068         }
2069
2070         if (!wpa_found && data->assoc_info.beacon_ies)
2071                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
2072         if (!rsn_found && data->assoc_info.beacon_ies)
2073                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
2074         if (wpa_found || rsn_found)
2075                 wpa_s->ap_ies_from_associnfo = 1;
2076
2077         if (wpa_s->assoc_freq && data->assoc_info.freq &&
2078             wpa_s->assoc_freq != data->assoc_info.freq) {
2079                 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
2080                            "%u to %u MHz",
2081                            wpa_s->assoc_freq, data->assoc_info.freq);
2082                 wpa_supplicant_update_scan_results(wpa_s);
2083         }
2084
2085         wpa_s->assoc_freq = data->assoc_info.freq;
2086
2087         return 0;
2088 }
2089
2090
2091 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
2092 {
2093         const u8 *bss_wpa = NULL, *bss_rsn = NULL;
2094
2095         if (!wpa_s->current_bss || !wpa_s->current_ssid)
2096                 return -1;
2097
2098         if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
2099                 return 0;
2100
2101         bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
2102                                         WPA_IE_VENDOR_TYPE);
2103         bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
2104
2105         if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
2106                                  bss_wpa ? 2 + bss_wpa[1] : 0) ||
2107             wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
2108                                  bss_rsn ? 2 + bss_rsn[1] : 0))
2109                 return -1;
2110
2111         return 0;
2112 }
2113
2114
2115 static void wpas_fst_update_mb_assoc(struct wpa_supplicant *wpa_s,
2116                                      union wpa_event_data *data)
2117 {
2118 #ifdef CONFIG_FST
2119         struct assoc_info *ai = data ? &data->assoc_info : NULL;
2120         struct wpa_bss *bss = wpa_s->current_bss;
2121         const u8 *ieprb, *iebcn;
2122
2123         wpabuf_free(wpa_s->received_mb_ies);
2124         wpa_s->received_mb_ies = NULL;
2125
2126         if (ai &&
2127             !wpas_fst_update_mbie(wpa_s, ai->resp_ies, ai->resp_ies_len)) {
2128                 wpa_printf(MSG_DEBUG,
2129                            "FST: MB IEs updated from Association Response frame");
2130                 return;
2131         }
2132
2133         if (ai &&
2134             !wpas_fst_update_mbie(wpa_s, ai->beacon_ies, ai->beacon_ies_len)) {
2135                 wpa_printf(MSG_DEBUG,
2136                            "FST: MB IEs updated from association event Beacon IEs");
2137                 return;
2138         }
2139
2140         if (!bss)
2141                 return;
2142
2143         ieprb = (const u8 *) (bss + 1);
2144         iebcn = ieprb + bss->ie_len;
2145
2146         if (!wpas_fst_update_mbie(wpa_s, ieprb, bss->ie_len))
2147                 wpa_printf(MSG_DEBUG, "FST: MB IEs updated from bss IE");
2148         else if (!wpas_fst_update_mbie(wpa_s, iebcn, bss->beacon_ie_len))
2149                 wpa_printf(MSG_DEBUG, "FST: MB IEs updated from bss beacon IE");
2150 #endif /* CONFIG_FST */
2151 }
2152
2153
2154 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
2155                                        union wpa_event_data *data)
2156 {
2157         u8 bssid[ETH_ALEN];
2158         int ft_completed;
2159         int new_bss = 0;
2160
2161 #ifdef CONFIG_AP
2162         if (wpa_s->ap_iface) {
2163                 if (!data)
2164                         return;
2165                 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
2166                                     data->assoc_info.addr,
2167                                     data->assoc_info.req_ies,
2168                                     data->assoc_info.req_ies_len,
2169                                     data->assoc_info.reassoc);
2170                 return;
2171         }
2172 #endif /* CONFIG_AP */
2173
2174         eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL);
2175
2176         ft_completed = wpa_ft_is_completed(wpa_s->wpa);
2177         if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
2178                 return;
2179
2180         if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
2181                 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID");
2182                 wpa_supplicant_deauthenticate(
2183                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2184                 return;
2185         }
2186
2187         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
2188         if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
2189                 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
2190                         MACSTR, MAC2STR(bssid));
2191                 new_bss = 1;
2192                 random_add_randomness(bssid, ETH_ALEN);
2193                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
2194                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
2195                 wpas_notify_bssid_changed(wpa_s);
2196
2197                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
2198                         wpa_clear_keys(wpa_s, bssid);
2199                 }
2200                 if (wpa_supplicant_select_config(wpa_s) < 0) {
2201                         wpa_supplicant_deauthenticate(
2202                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2203                         return;
2204                 }
2205         }
2206
2207         if (wpa_s->conf->ap_scan == 1 &&
2208             wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
2209                 if (wpa_supplicant_assoc_update_ie(wpa_s) < 0 && new_bss)
2210                         wpa_msg(wpa_s, MSG_WARNING,
2211                                 "WPA/RSN IEs not updated");
2212         }
2213
2214         wpas_fst_update_mb_assoc(wpa_s, data);
2215
2216 #ifdef CONFIG_SME
2217         os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
2218         wpa_s->sme.prev_bssid_set = 1;
2219         wpa_s->sme.last_unprot_disconnect.sec = 0;
2220 #endif /* CONFIG_SME */
2221
2222         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
2223         if (wpa_s->current_ssid) {
2224                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
2225                  * initialized before association, but for other modes,
2226                  * initialize PC/SC here, if the current configuration needs
2227                  * smartcard or SIM/USIM. */
2228                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
2229         }
2230         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
2231         if (wpa_s->l2)
2232                 l2_packet_notify_auth_start(wpa_s->l2);
2233
2234         /*
2235          * Set portEnabled first to FALSE in order to get EAP state machine out
2236          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
2237          * state machine may transit to AUTHENTICATING state based on obsolete
2238          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
2239          * AUTHENTICATED without ever giving chance to EAP state machine to
2240          * reset the state.
2241          */
2242         if (!ft_completed) {
2243                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
2244                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
2245         }
2246         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
2247                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
2248         /* 802.1X::portControl = Auto */
2249         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
2250         wpa_s->eapol_received = 0;
2251         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2252             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
2253             (wpa_s->current_ssid &&
2254              wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
2255                 if (wpa_s->current_ssid &&
2256                     wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE &&
2257                     (wpa_s->drv_flags &
2258                      WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2259                         /*
2260                          * Set the key after having received joined-IBSS event
2261                          * from the driver.
2262                          */
2263                         wpa_supplicant_set_wpa_none_key(wpa_s,
2264                                                         wpa_s->current_ssid);
2265                 }
2266                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2267                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2268         } else if (!ft_completed) {
2269                 /* Timeout for receiving the first EAPOL packet */
2270                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
2271         }
2272         wpa_supplicant_cancel_scan(wpa_s);
2273
2274         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
2275             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
2276                 /*
2277                  * We are done; the driver will take care of RSN 4-way
2278                  * handshake.
2279                  */
2280                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2281                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2282                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2283                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2284         } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
2285                    wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
2286                 /*
2287                  * The driver will take care of RSN 4-way handshake, so we need
2288                  * to allow EAPOL supplicant to complete its work without
2289                  * waiting for WPA supplicant.
2290                  */
2291                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2292         } else if (ft_completed) {
2293                 /*
2294                  * FT protocol completed - make sure EAPOL state machine ends
2295                  * up in authenticated.
2296                  */
2297                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2298                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2299                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2300                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2301         }
2302
2303         wpa_s->last_eapol_matches_bssid = 0;
2304
2305         if (wpa_s->pending_eapol_rx) {
2306                 struct os_reltime now, age;
2307                 os_get_reltime(&now);
2308                 os_reltime_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
2309                 if (age.sec == 0 && age.usec < 100000 &&
2310                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
2311                     0) {
2312                         wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
2313                                 "frame that was received just before "
2314                                 "association notification");
2315                         wpa_supplicant_rx_eapol(
2316                                 wpa_s, wpa_s->pending_eapol_rx_src,
2317                                 wpabuf_head(wpa_s->pending_eapol_rx),
2318                                 wpabuf_len(wpa_s->pending_eapol_rx));
2319                 }
2320                 wpabuf_free(wpa_s->pending_eapol_rx);
2321                 wpa_s->pending_eapol_rx = NULL;
2322         }
2323
2324         if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2325              wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
2326             wpa_s->current_ssid &&
2327             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2328                 /* Set static WEP keys again */
2329                 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
2330         }
2331
2332 #ifdef CONFIG_IBSS_RSN
2333         if (wpa_s->current_ssid &&
2334             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
2335             wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
2336             wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
2337             wpa_s->ibss_rsn == NULL) {
2338                 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
2339                 if (!wpa_s->ibss_rsn) {
2340                         wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
2341                         wpa_supplicant_deauthenticate(
2342                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2343                         return;
2344                 }
2345
2346                 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
2347         }
2348 #endif /* CONFIG_IBSS_RSN */
2349
2350         wpas_wps_notify_assoc(wpa_s, bssid);
2351
2352         if (data) {
2353                 wmm_ac_notify_assoc(wpa_s, data->assoc_info.resp_ies,
2354                                     data->assoc_info.resp_ies_len,
2355                                     &data->assoc_info.wmm_params);
2356
2357                 if (wpa_s->reassoc_same_bss)
2358                         wmm_ac_restore_tspecs(wpa_s);
2359         }
2360 }
2361
2362
2363 static int disconnect_reason_recoverable(u16 reason_code)
2364 {
2365         return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
2366                 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
2367                 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
2368 }
2369
2370
2371 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
2372                                           u16 reason_code,
2373                                           int locally_generated)
2374 {
2375         const u8 *bssid;
2376
2377         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2378                 /*
2379                  * At least Host AP driver and a Prism3 card seemed to be
2380                  * generating streams of disconnected events when configuring
2381                  * IBSS for WPA-None. Ignore them for now.
2382                  */
2383                 return;
2384         }
2385
2386         bssid = wpa_s->bssid;
2387         if (is_zero_ether_addr(bssid))
2388                 bssid = wpa_s->pending_bssid;
2389
2390         if (!is_zero_ether_addr(bssid) ||
2391             wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2392                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
2393                         " reason=%d%s",
2394                         MAC2STR(bssid), reason_code,
2395                         locally_generated ? " locally_generated=1" : "");
2396         }
2397 }
2398
2399
2400 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code,
2401                                  int locally_generated)
2402 {
2403         if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE ||
2404             !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
2405                 return 0; /* Not in 4-way handshake with PSK */
2406
2407         /*
2408          * It looks like connection was lost while trying to go through PSK
2409          * 4-way handshake. Filter out known disconnection cases that are caused
2410          * by something else than PSK mismatch to avoid confusing reports.
2411          */
2412
2413         if (locally_generated) {
2414                 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS)
2415                         return 0;
2416         }
2417
2418         return 1;
2419 }
2420
2421
2422 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s,
2423                                                  u16 reason_code,
2424                                                  int locally_generated)
2425 {
2426         const u8 *bssid;
2427         int authenticating;
2428         u8 prev_pending_bssid[ETH_ALEN];
2429         struct wpa_bss *fast_reconnect = NULL;
2430         struct wpa_ssid *fast_reconnect_ssid = NULL;
2431         struct wpa_ssid *last_ssid;
2432
2433         authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
2434         os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
2435
2436         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2437                 /*
2438                  * At least Host AP driver and a Prism3 card seemed to be
2439                  * generating streams of disconnected events when configuring
2440                  * IBSS for WPA-None. Ignore them for now.
2441                  */
2442                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
2443                         "IBSS/WPA-None mode");
2444                 return;
2445         }
2446
2447         if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) {
2448                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
2449                         "pre-shared key may be incorrect");
2450                 if (wpas_p2p_4way_hs_failed(wpa_s) > 0)
2451                         return; /* P2P group removed */
2452                 wpas_auth_failed(wpa_s, "WRONG_KEY");
2453         }
2454         if (!wpa_s->disconnected &&
2455             (!wpa_s->auto_reconnect_disabled ||
2456              wpa_s->key_mgmt == WPA_KEY_MGMT_WPS ||
2457              wpas_wps_searching(wpa_s) ||
2458              wpas_wps_reenable_networks_pending(wpa_s))) {
2459                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
2460                         "reconnect (wps=%d/%d wpa_state=%d)",
2461                         wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
2462                         wpas_wps_searching(wpa_s),
2463                         wpa_s->wpa_state);
2464                 if (wpa_s->wpa_state == WPA_COMPLETED &&
2465                     wpa_s->current_ssid &&
2466                     wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
2467                     !locally_generated &&
2468                     disconnect_reason_recoverable(reason_code)) {
2469                         /*
2470                          * It looks like the AP has dropped association with
2471                          * us, but could allow us to get back in. Try to
2472                          * reconnect to the same BSS without full scan to save
2473                          * time for some common cases.
2474                          */
2475                         fast_reconnect = wpa_s->current_bss;
2476                         fast_reconnect_ssid = wpa_s->current_ssid;
2477                 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
2478                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2479                 else
2480                         wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
2481                                 "immediate scan");
2482         } else {
2483                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
2484                         "try to re-connect");
2485                 wpa_s->reassociate = 0;
2486                 wpa_s->disconnected = 1;
2487                 if (!wpa_s->pno)
2488                         wpa_supplicant_cancel_sched_scan(wpa_s);
2489         }
2490         bssid = wpa_s->bssid;
2491         if (is_zero_ether_addr(bssid))
2492                 bssid = wpa_s->pending_bssid;
2493         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2494                 wpas_connection_failed(wpa_s, bssid);
2495         wpa_sm_notify_disassoc(wpa_s->wpa);
2496         if (locally_generated)
2497                 wpa_s->disconnect_reason = -reason_code;
2498         else
2499                 wpa_s->disconnect_reason = reason_code;
2500         wpas_notify_disconnect_reason(wpa_s);
2501         if (wpa_supplicant_dynamic_keys(wpa_s)) {
2502                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
2503                 wpa_clear_keys(wpa_s, wpa_s->bssid);
2504         }
2505         last_ssid = wpa_s->current_ssid;
2506         wpa_supplicant_mark_disassoc(wpa_s);
2507
2508         if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
2509                 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
2510                 wpa_s->current_ssid = last_ssid;
2511         }
2512
2513         if (fast_reconnect &&
2514             !wpas_network_disabled(wpa_s, fast_reconnect_ssid) &&
2515             !disallowed_bssid(wpa_s, fast_reconnect->bssid) &&
2516             !disallowed_ssid(wpa_s, fast_reconnect->ssid,
2517                              fast_reconnect->ssid_len) &&
2518             !wpas_temp_disabled(wpa_s, fast_reconnect_ssid)) {
2519 #ifndef CONFIG_NO_SCAN_PROCESSING
2520                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
2521                 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
2522                                            fast_reconnect_ssid) < 0) {
2523                         /* Recover through full scan */
2524                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2525                 }
2526 #endif /* CONFIG_NO_SCAN_PROCESSING */
2527         } else if (fast_reconnect) {
2528                 /*
2529                  * Could not reconnect to the same BSS due to network being
2530                  * disabled. Use a new scan to match the alternative behavior
2531                  * above, i.e., to continue automatic reconnection attempt in a
2532                  * way that enforces disabled network rules.
2533                  */
2534                 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2535         }
2536 }
2537
2538
2539 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2540 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
2541 {
2542         struct wpa_supplicant *wpa_s = eloop_ctx;
2543
2544         if (!wpa_s->pending_mic_error_report)
2545                 return;
2546
2547         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
2548         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
2549         wpa_s->pending_mic_error_report = 0;
2550 }
2551 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2552
2553
2554 static void
2555 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
2556                                          union wpa_event_data *data)
2557 {
2558         int pairwise;
2559         struct os_reltime t;
2560
2561         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
2562         pairwise = (data && data->michael_mic_failure.unicast);
2563         os_get_reltime(&t);
2564         if ((wpa_s->last_michael_mic_error.sec &&
2565              !os_reltime_expired(&t, &wpa_s->last_michael_mic_error, 60)) ||
2566             wpa_s->pending_mic_error_report) {
2567                 if (wpa_s->pending_mic_error_report) {
2568                         /*
2569                          * Send the pending MIC error report immediately since
2570                          * we are going to start countermeasures and AP better
2571                          * do the same.
2572                          */
2573                         wpa_sm_key_request(wpa_s->wpa, 1,
2574                                            wpa_s->pending_mic_error_pairwise);
2575                 }
2576
2577                 /* Send the new MIC error report immediately since we are going
2578                  * to start countermeasures and AP better do the same.
2579                  */
2580                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2581
2582                 /* initialize countermeasures */
2583                 wpa_s->countermeasures = 1;
2584
2585                 wpa_blacklist_add(wpa_s, wpa_s->bssid);
2586
2587                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
2588
2589                 /*
2590                  * Need to wait for completion of request frame. We do not get
2591                  * any callback for the message completion, so just wait a
2592                  * short while and hope for the best. */
2593                 os_sleep(0, 10000);
2594
2595                 wpa_drv_set_countermeasures(wpa_s, 1);
2596                 wpa_supplicant_deauthenticate(wpa_s,
2597                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
2598                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
2599                                      wpa_s, NULL);
2600                 eloop_register_timeout(60, 0,
2601                                        wpa_supplicant_stop_countermeasures,
2602                                        wpa_s, NULL);
2603                 /* TODO: mark the AP rejected for 60 second. STA is
2604                  * allowed to associate with another AP.. */
2605         } else {
2606 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2607                 if (wpa_s->mic_errors_seen) {
2608                         /*
2609                          * Reduce the effectiveness of Michael MIC error
2610                          * reports as a means for attacking against TKIP if
2611                          * more than one MIC failure is noticed with the same
2612                          * PTK. We delay the transmission of the reports by a
2613                          * random time between 0 and 60 seconds in order to
2614                          * force the attacker wait 60 seconds before getting
2615                          * the information on whether a frame resulted in a MIC
2616                          * failure.
2617                          */
2618                         u8 rval[4];
2619                         int sec;
2620
2621                         if (os_get_random(rval, sizeof(rval)) < 0)
2622                                 sec = os_random() % 60;
2623                         else
2624                                 sec = WPA_GET_BE32(rval) % 60;
2625                         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
2626                                 "report %d seconds", sec);
2627                         wpa_s->pending_mic_error_report = 1;
2628                         wpa_s->pending_mic_error_pairwise = pairwise;
2629                         eloop_cancel_timeout(
2630                                 wpa_supplicant_delayed_mic_error_report,
2631                                 wpa_s, NULL);
2632                         eloop_register_timeout(
2633                                 sec, os_random() % 1000000,
2634                                 wpa_supplicant_delayed_mic_error_report,
2635                                 wpa_s, NULL);
2636                 } else {
2637                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2638                 }
2639 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2640                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2641 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2642         }
2643         wpa_s->last_michael_mic_error = t;
2644         wpa_s->mic_errors_seen++;
2645 }
2646
2647
2648 #ifdef CONFIG_TERMINATE_ONLASTIF
2649 static int any_interfaces(struct wpa_supplicant *head)
2650 {
2651         struct wpa_supplicant *wpa_s;
2652
2653         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
2654                 if (!wpa_s->interface_removed)
2655                         return 1;
2656         return 0;
2657 }
2658 #endif /* CONFIG_TERMINATE_ONLASTIF */
2659
2660
2661 static void
2662 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
2663                                       union wpa_event_data *data)
2664 {
2665         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
2666                 return;
2667
2668         switch (data->interface_status.ievent) {
2669         case EVENT_INTERFACE_ADDED:
2670                 if (!wpa_s->interface_removed)
2671                         break;
2672                 wpa_s->interface_removed = 0;
2673                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
2674                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
2675                         wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
2676                                 "driver after interface was added");
2677                 }
2678
2679 #ifdef CONFIG_P2P
2680                 if (!wpa_s->global->p2p &&
2681                     !wpa_s->global->p2p_disabled &&
2682                     !wpa_s->conf->p2p_disabled &&
2683                     (wpa_s->drv_flags &
2684                      WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
2685                     wpas_p2p_add_p2pdev_interface(
2686                             wpa_s, wpa_s->global->params.conf_p2p_dev) < 0) {
2687                         wpa_printf(MSG_INFO,
2688                                    "P2P: Failed to enable P2P Device interface");
2689                         /* Try to continue without. P2P will be disabled. */
2690                 }
2691 #endif /* CONFIG_P2P */
2692
2693                 break;
2694         case EVENT_INTERFACE_REMOVED:
2695                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
2696                 wpa_s->interface_removed = 1;
2697                 wpa_supplicant_mark_disassoc(wpa_s);
2698                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2699                 l2_packet_deinit(wpa_s->l2);
2700                 wpa_s->l2 = NULL;
2701
2702 #ifdef CONFIG_P2P
2703                 if (wpa_s->global->p2p &&
2704                     wpa_s->global->p2p_init_wpa_s->parent == wpa_s &&
2705                     (wpa_s->drv_flags &
2706                      WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)) {
2707                         wpa_dbg(wpa_s, MSG_DEBUG,
2708                                 "Removing P2P Device interface");
2709                         wpa_supplicant_remove_iface(
2710                                 wpa_s->global, wpa_s->global->p2p_init_wpa_s,
2711                                 0);
2712                         wpa_s->global->p2p_init_wpa_s = NULL;
2713                 }
2714 #endif /* CONFIG_P2P */
2715
2716 #ifdef CONFIG_TERMINATE_ONLASTIF
2717                 /* check if last interface */
2718                 if (!any_interfaces(wpa_s->global->ifaces))
2719                         eloop_terminate();
2720 #endif /* CONFIG_TERMINATE_ONLASTIF */
2721                 break;
2722         }
2723 }
2724
2725
2726 #ifdef CONFIG_PEERKEY
2727 static void
2728 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
2729                               union wpa_event_data *data)
2730 {
2731         if (data == NULL)
2732                 return;
2733         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
2734 }
2735 #endif /* CONFIG_PEERKEY */
2736
2737
2738 #ifdef CONFIG_TDLS
2739 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
2740                                       union wpa_event_data *data)
2741 {
2742         if (data == NULL)
2743                 return;
2744         switch (data->tdls.oper) {
2745         case TDLS_REQUEST_SETUP:
2746                 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer);
2747                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2748                         wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
2749                 else
2750                         wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer);
2751                 break;
2752         case TDLS_REQUEST_TEARDOWN:
2753                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2754                         wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer,
2755                                                data->tdls.reason_code);
2756                 else
2757                         wpa_drv_tdls_oper(wpa_s, TDLS_TEARDOWN,
2758                                           data->tdls.peer);
2759                 break;
2760         case TDLS_REQUEST_DISCOVER:
2761                         wpa_tdls_send_discovery_request(wpa_s->wpa,
2762                                                         data->tdls.peer);
2763                 break;
2764         }
2765 }
2766 #endif /* CONFIG_TDLS */
2767
2768
2769 #ifdef CONFIG_WNM
2770 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
2771                                      union wpa_event_data *data)
2772 {
2773         if (data == NULL)
2774                 return;
2775         switch (data->wnm.oper) {
2776         case WNM_OPER_SLEEP:
2777                 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
2778                            "(action=%d, intval=%d)",
2779                            data->wnm.sleep_action, data->wnm.sleep_intval);
2780                 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
2781                                              data->wnm.sleep_intval, NULL);
2782                 break;
2783         }
2784 }
2785 #endif /* CONFIG_WNM */
2786
2787
2788 #ifdef CONFIG_IEEE80211R
2789 static void
2790 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
2791                                  union wpa_event_data *data)
2792 {
2793         if (data == NULL)
2794                 return;
2795
2796         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
2797                                     data->ft_ies.ies_len,
2798                                     data->ft_ies.ft_action,
2799                                     data->ft_ies.target_ap,
2800                                     data->ft_ies.ric_ies,
2801                                     data->ft_ies.ric_ies_len) < 0) {
2802                 /* TODO: prevent MLME/driver from trying to associate? */
2803         }
2804 }
2805 #endif /* CONFIG_IEEE80211R */
2806
2807
2808 #ifdef CONFIG_IBSS_RSN
2809 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
2810                                                 union wpa_event_data *data)
2811 {
2812         struct wpa_ssid *ssid;
2813         if (wpa_s->wpa_state < WPA_ASSOCIATED)
2814                 return;
2815         if (data == NULL)
2816                 return;
2817         ssid = wpa_s->current_ssid;
2818         if (ssid == NULL)
2819                 return;
2820         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2821                 return;
2822
2823         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
2824 }
2825
2826
2827 static void wpa_supplicant_event_ibss_auth(struct wpa_supplicant *wpa_s,
2828                                            union wpa_event_data *data)
2829 {
2830         struct wpa_ssid *ssid = wpa_s->current_ssid;
2831
2832         if (ssid == NULL)
2833                 return;
2834
2835         /* check if the ssid is correctly configured as IBSS/RSN */
2836         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2837                 return;
2838
2839         ibss_rsn_handle_auth(wpa_s->ibss_rsn, data->rx_mgmt.frame,
2840                              data->rx_mgmt.frame_len);
2841 }
2842 #endif /* CONFIG_IBSS_RSN */
2843
2844
2845 #ifdef CONFIG_IEEE80211R
2846 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
2847                          size_t len)
2848 {
2849         const u8 *sta_addr, *target_ap_addr;
2850         u16 status;
2851
2852         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
2853         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
2854                 return; /* only SME case supported for now */
2855         if (len < 1 + 2 * ETH_ALEN + 2)
2856                 return;
2857         if (data[0] != 2)
2858                 return; /* Only FT Action Response is supported for now */
2859         sta_addr = data + 1;
2860         target_ap_addr = data + 1 + ETH_ALEN;
2861         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
2862         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
2863                 MACSTR " TargetAP " MACSTR " status %u",
2864                 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
2865
2866         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
2867                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
2868                         " in FT Action Response", MAC2STR(sta_addr));
2869                 return;
2870         }
2871
2872         if (status) {
2873                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
2874                         "failure (status code %d)", status);
2875                 /* TODO: report error to FT code(?) */
2876                 return;
2877         }
2878
2879         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
2880                                     len - (1 + 2 * ETH_ALEN + 2), 1,
2881                                     target_ap_addr, NULL, 0) < 0)
2882                 return;
2883
2884 #ifdef CONFIG_SME
2885         {
2886                 struct wpa_bss *bss;
2887                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
2888                 if (bss)
2889                         wpa_s->sme.freq = bss->freq;
2890                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
2891                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
2892                               WLAN_AUTH_FT);
2893         }
2894 #endif /* CONFIG_SME */
2895 }
2896 #endif /* CONFIG_IEEE80211R */
2897
2898
2899 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
2900                                                struct unprot_deauth *e)
2901 {
2902 #ifdef CONFIG_IEEE80211W
2903         wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
2904                    "dropped: " MACSTR " -> " MACSTR
2905                    " (reason code %u)",
2906                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2907         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2908 #endif /* CONFIG_IEEE80211W */
2909 }
2910
2911
2912 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
2913                                                  struct unprot_disassoc *e)
2914 {
2915 #ifdef CONFIG_IEEE80211W
2916         wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
2917                    "dropped: " MACSTR " -> " MACSTR
2918                    " (reason code %u)",
2919                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2920         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2921 #endif /* CONFIG_IEEE80211W */
2922 }
2923
2924
2925 static void wpas_event_disconnect(struct wpa_supplicant *wpa_s, const u8 *addr,
2926                                   u16 reason_code, int locally_generated,
2927                                   const u8 *ie, size_t ie_len, int deauth)
2928 {
2929 #ifdef CONFIG_AP
2930         if (wpa_s->ap_iface && addr) {
2931                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], addr);
2932                 return;
2933         }
2934
2935         if (wpa_s->ap_iface) {
2936                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in AP mode");
2937                 return;
2938         }
2939 #endif /* CONFIG_AP */
2940
2941         if (!locally_generated)
2942                 wpa_s->own_disconnect_req = 0;
2943
2944         wpa_supplicant_event_disassoc(wpa_s, reason_code, locally_generated);
2945
2946         if (((reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
2947               ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
2948                 (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
2949                eapol_sm_failed(wpa_s->eapol))) &&
2950              !wpa_s->eap_expected_failure))
2951                 wpas_auth_failed(wpa_s, "AUTH_FAILED");
2952
2953 #ifdef CONFIG_P2P
2954         if (deauth && reason_code > 0) {
2955                 if (wpas_p2p_deauth_notif(wpa_s, addr, reason_code, ie, ie_len,
2956                                           locally_generated) > 0) {
2957                         /*
2958                          * The interface was removed, so cannot continue
2959                          * processing any additional operations after this.
2960                          */
2961                         return;
2962                 }
2963         }
2964 #endif /* CONFIG_P2P */
2965
2966         wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
2967                                              locally_generated);
2968 }
2969
2970
2971 static void wpas_event_disassoc(struct wpa_supplicant *wpa_s,
2972                                 struct disassoc_info *info)
2973 {
2974         u16 reason_code = 0;
2975         int locally_generated = 0;
2976         const u8 *addr = NULL;
2977         const u8 *ie = NULL;
2978         size_t ie_len = 0;
2979
2980         wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
2981
2982         if (info) {
2983                 addr = info->addr;
2984                 ie = info->ie;
2985                 ie_len = info->ie_len;
2986                 reason_code = info->reason_code;
2987                 locally_generated = info->locally_generated;
2988                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", reason_code,
2989                         locally_generated ? " (locally generated)" : "");
2990                 if (addr)
2991                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2992                                 MAC2STR(addr));
2993                 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
2994                             ie, ie_len);
2995         }
2996
2997 #ifdef CONFIG_AP
2998         if (wpa_s->ap_iface && info && info->addr) {
2999                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], info->addr);
3000                 return;
3001         }
3002
3003         if (wpa_s->ap_iface) {
3004                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in AP mode");
3005                 return;
3006         }
3007 #endif /* CONFIG_AP */
3008
3009 #ifdef CONFIG_P2P
3010         if (info) {
3011                 wpas_p2p_disassoc_notif(
3012                         wpa_s, info->addr, reason_code, info->ie, info->ie_len,
3013                         locally_generated);
3014         }
3015 #endif /* CONFIG_P2P */
3016
3017         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3018                 sme_event_disassoc(wpa_s, info);
3019
3020         wpas_event_disconnect(wpa_s, addr, reason_code, locally_generated,
3021                               ie, ie_len, 0);
3022 }
3023
3024
3025 static void wpas_event_deauth(struct wpa_supplicant *wpa_s,
3026                               struct deauth_info *info)
3027 {
3028         u16 reason_code = 0;
3029         int locally_generated = 0;
3030         const u8 *addr = NULL;
3031         const u8 *ie = NULL;
3032         size_t ie_len = 0;
3033
3034         wpa_dbg(wpa_s, MSG_DEBUG, "Deauthentication notification");
3035
3036         if (info) {
3037                 addr = info->addr;
3038                 ie = info->ie;
3039                 ie_len = info->ie_len;
3040                 reason_code = info->reason_code;
3041                 locally_generated = info->locally_generated;
3042                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
3043                         reason_code,
3044                         locally_generated ? " (locally generated)" : "");
3045                 if (addr) {
3046                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
3047                                 MAC2STR(addr));
3048                 }
3049                 wpa_hexdump(MSG_DEBUG, "Deauthentication frame IE(s)",
3050                             ie, ie_len);
3051         }
3052
3053         wpa_reset_ft_completed(wpa_s->wpa);
3054
3055         wpas_event_disconnect(wpa_s, addr, reason_code,
3056                               locally_generated, ie, ie_len, 1);
3057 }
3058
3059
3060 static const char * reg_init_str(enum reg_change_initiator init)
3061 {
3062         switch (init) {
3063         case REGDOM_SET_BY_CORE:
3064                 return "CORE";
3065         case REGDOM_SET_BY_USER:
3066                 return "USER";
3067         case REGDOM_SET_BY_DRIVER:
3068                 return "DRIVER";
3069         case REGDOM_SET_BY_COUNTRY_IE:
3070                 return "COUNTRY_IE";
3071         case REGDOM_BEACON_HINT:
3072                 return "BEACON_HINT";
3073         }
3074         return "?";
3075 }
3076
3077
3078 static const char * reg_type_str(enum reg_type type)
3079 {
3080         switch (type) {
3081         case REGDOM_TYPE_UNKNOWN:
3082                 return "UNKNOWN";
3083         case REGDOM_TYPE_COUNTRY:
3084                 return "COUNTRY";
3085         case REGDOM_TYPE_WORLD:
3086                 return "WORLD";
3087         case REGDOM_TYPE_CUSTOM_WORLD:
3088                 return "CUSTOM_WORLD";
3089         case REGDOM_TYPE_INTERSECTION:
3090                 return "INTERSECTION";
3091         }
3092         return "?";
3093 }
3094
3095
3096 static void wpa_supplicant_update_channel_list(
3097         struct wpa_supplicant *wpa_s, struct channel_list_changed *info)
3098 {
3099         struct wpa_supplicant *ifs;
3100
3101         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_REGDOM_CHANGE "init=%s type=%s%s%s",
3102                 reg_init_str(info->initiator), reg_type_str(info->type),
3103                 info->alpha2[0] ? " alpha2=" : "",
3104                 info->alpha2[0] ? info->alpha2 : "");
3105
3106         if (wpa_s->drv_priv == NULL)
3107                 return; /* Ignore event during drv initialization */
3108
3109         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
3110                          radio_list) {
3111                 wpa_printf(MSG_DEBUG, "%s: Updating hw mode",
3112                            ifs->ifname);
3113                 free_hw_features(ifs);
3114                 ifs->hw.modes = wpa_drv_get_hw_feature_data(
3115                         ifs, &ifs->hw.num_modes, &ifs->hw.flags);
3116         }
3117
3118         /* Restart sched_scan with updated channel list */
3119         if (wpa_s->sched_scanning) {
3120                 wpa_dbg(wpa_s, MSG_DEBUG,
3121                         "Channel list changed restart sched scan.");
3122                 wpa_supplicant_cancel_sched_scan(wpa_s);
3123                 wpa_supplicant_req_scan(wpa_s, 0, 0);
3124         }
3125
3126         wpas_p2p_update_channel_list(wpa_s, WPAS_P2P_CHANNEL_UPDATE_DRIVER);
3127 }
3128
3129
3130 static void wpas_event_rx_mgmt_action(struct wpa_supplicant *wpa_s,
3131                                       const u8 *frame, size_t len, int freq,
3132                                       int rssi)
3133 {
3134         const struct ieee80211_mgmt *mgmt;
3135         const u8 *payload;
3136         size_t plen;
3137         u8 category;
3138
3139         if (len < IEEE80211_HDRLEN + 2)
3140                 return;
3141
3142         mgmt = (const struct ieee80211_mgmt *) frame;
3143         payload = frame + IEEE80211_HDRLEN;
3144         category = *payload++;
3145         plen = len - IEEE80211_HDRLEN - 1;
3146
3147         wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
3148                 " Category=%u DataLen=%d freq=%d MHz",
3149                 MAC2STR(mgmt->sa), category, (int) plen, freq);
3150
3151         if (category == WLAN_ACTION_WMM) {
3152                 wmm_ac_rx_action(wpa_s, mgmt->da, mgmt->sa, payload, plen);
3153                 return;
3154         }
3155
3156 #ifdef CONFIG_IEEE80211R
3157         if (category == WLAN_ACTION_FT) {
3158                 ft_rx_action(wpa_s, payload, plen);
3159                 return;
3160         }
3161 #endif /* CONFIG_IEEE80211R */
3162
3163 #ifdef CONFIG_IEEE80211W
3164 #ifdef CONFIG_SME
3165         if (category == WLAN_ACTION_SA_QUERY) {
3166                 sme_sa_query_rx(wpa_s, mgmt->sa, payload, plen);
3167                 return;
3168         }
3169 #endif /* CONFIG_SME */
3170 #endif /* CONFIG_IEEE80211W */
3171
3172 #ifdef CONFIG_WNM
3173         if (mgmt->u.action.category == WLAN_ACTION_WNM) {
3174                 ieee802_11_rx_wnm_action(wpa_s, mgmt, len);
3175                 return;
3176         }
3177 #endif /* CONFIG_WNM */
3178
3179 #ifdef CONFIG_GAS
3180         if ((mgmt->u.action.category == WLAN_ACTION_PUBLIC ||
3181              mgmt->u.action.category == WLAN_ACTION_PROTECTED_DUAL) &&
3182             gas_query_rx(wpa_s->gas, mgmt->da, mgmt->sa, mgmt->bssid,
3183                          mgmt->u.action.category,
3184                          payload, plen, freq) == 0)
3185                 return;
3186 #endif /* CONFIG_GAS */
3187
3188 #ifdef CONFIG_TDLS
3189         if (category == WLAN_ACTION_PUBLIC && plen >= 4 &&
3190             payload[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
3191                 wpa_dbg(wpa_s, MSG_DEBUG,
3192                         "TDLS: Received Discovery Response from " MACSTR,
3193                         MAC2STR(mgmt->sa));
3194                 return;
3195         }
3196 #endif /* CONFIG_TDLS */
3197
3198 #ifdef CONFIG_INTERWORKING
3199         if (category == WLAN_ACTION_QOS && plen >= 1 &&
3200             payload[0] == QOS_QOS_MAP_CONFIG) {
3201                 const u8 *pos = payload + 1;
3202                 size_t qlen = plen - 1;
3203                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: Received QoS Map Configure frame from "
3204                         MACSTR, MAC2STR(mgmt->sa));
3205                 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) == 0 &&
3206                     qlen > 2 && pos[0] == WLAN_EID_QOS_MAP_SET &&
3207                     pos[1] <= qlen - 2 && pos[1] >= 16)
3208                         wpas_qos_map_set(wpa_s, pos + 2, pos[1]);
3209                 return;
3210         }
3211 #endif /* CONFIG_INTERWORKING */
3212
3213         if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
3214             payload[0] == WLAN_RRM_NEIGHBOR_REPORT_RESPONSE) {
3215                 wpas_rrm_process_neighbor_rep(wpa_s, payload + 1, plen - 1);
3216                 return;
3217         }
3218
3219         if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
3220             payload[0] == WLAN_RRM_LINK_MEASUREMENT_REQUEST) {
3221                 wpas_rrm_handle_link_measurement_request(wpa_s, mgmt->sa,
3222                                                          payload + 1, plen - 1,
3223                                                          rssi);
3224                 return;
3225         }
3226
3227 #ifdef CONFIG_FST
3228         if (mgmt->u.action.category == WLAN_ACTION_FST && wpa_s->fst) {
3229                 fst_rx_action(wpa_s->fst, mgmt, len);
3230                 return;
3231         }
3232 #endif /* CONFIG_FST */
3233
3234         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
3235                            category, payload, plen, freq);
3236         if (wpa_s->ifmsh)
3237                 mesh_mpm_action_rx(wpa_s, mgmt, len);
3238 }
3239
3240
3241 static void wpa_supplicant_notify_avoid_freq(struct wpa_supplicant *wpa_s,
3242                                              union wpa_event_data *event)
3243 {
3244         struct wpa_freq_range_list *list;
3245         char *str = NULL;
3246
3247         list = &event->freq_range;
3248
3249         if (list->num)
3250                 str = freq_range_list_str(list);
3251         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AVOID_FREQ "ranges=%s",
3252                 str ? str : "");
3253
3254 #ifdef CONFIG_P2P
3255         if (freq_range_list_parse(&wpa_s->global->p2p_go_avoid_freq, str)) {
3256                 wpa_dbg(wpa_s, MSG_ERROR, "%s: Failed to parse freq range",
3257                         __func__);
3258         } else {
3259                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Update channel list based on frequency avoid event");
3260
3261                 /*
3262                  * The update channel flow will also take care of moving a GO
3263                  * from the unsafe frequency if needed.
3264                  */
3265                 wpas_p2p_update_channel_list(wpa_s,
3266                                              WPAS_P2P_CHANNEL_UPDATE_AVOID);
3267         }
3268 #endif /* CONFIG_P2P */
3269
3270         os_free(str);
3271 }
3272
3273
3274 static void wpa_supplicant_event_assoc_auth(struct wpa_supplicant *wpa_s,
3275                                             union wpa_event_data *data)
3276 {
3277         wpa_dbg(wpa_s, MSG_DEBUG,
3278                 "Connection authorized by device, previous state %d",
3279                 wpa_s->wpa_state);
3280         if (wpa_s->wpa_state == WPA_ASSOCIATED) {
3281                 wpa_supplicant_cancel_auth_timeout(wpa_s);
3282                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
3283                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
3284                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
3285         }
3286         wpa_sm_set_rx_replay_ctr(wpa_s->wpa, data->assoc_info.key_replay_ctr);
3287         wpa_sm_set_ptk_kck_kek(wpa_s->wpa, data->assoc_info.ptk_kck,
3288                                data->assoc_info.ptk_kck_len,
3289                                data->assoc_info.ptk_kek,
3290                                data->assoc_info.ptk_kek_len);
3291 }
3292
3293
3294 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
3295                           union wpa_event_data *data)
3296 {
3297         struct wpa_supplicant *wpa_s = ctx;
3298         int resched;
3299
3300         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
3301             event != EVENT_INTERFACE_ENABLED &&
3302             event != EVENT_INTERFACE_STATUS &&
3303             event != EVENT_SCHED_SCAN_STOPPED) {
3304                 wpa_dbg(wpa_s, MSG_DEBUG,
3305                         "Ignore event %s (%d) while interface is disabled",
3306                         event_to_string(event), event);
3307                 return;
3308         }
3309
3310 #ifndef CONFIG_NO_STDOUT_DEBUG
3311 {
3312         int level = MSG_DEBUG;
3313
3314         if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
3315                 const struct ieee80211_hdr *hdr;
3316                 u16 fc;
3317                 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
3318                 fc = le_to_host16(hdr->frame_control);
3319                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3320                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
3321                         level = MSG_EXCESSIVE;
3322         }
3323
3324         wpa_dbg(wpa_s, level, "Event %s (%d) received",
3325                 event_to_string(event), event);
3326 }
3327 #endif /* CONFIG_NO_STDOUT_DEBUG */
3328
3329         switch (event) {
3330         case EVENT_AUTH:
3331 #ifdef CONFIG_FST
3332                 if (!wpas_fst_update_mbie(wpa_s, data->auth.ies,
3333                                           data->auth.ies_len))
3334                         wpa_printf(MSG_DEBUG,
3335                                    "FST: MB IEs updated from auth IE");
3336 #endif /* CONFIG_FST */
3337                 sme_event_auth(wpa_s, data);
3338                 break;
3339         case EVENT_ASSOC:
3340                 wpa_supplicant_event_assoc(wpa_s, data);
3341                 if (data && data->assoc_info.authorized)
3342                         wpa_supplicant_event_assoc_auth(wpa_s, data);
3343                 if (data) {
3344                         wpa_msg(wpa_s, MSG_INFO,
3345                                 WPA_EVENT_SUBNET_STATUS_UPDATE "status=%u",
3346                                 data->assoc_info.subnet_status);
3347                 }
3348                 break;
3349         case EVENT_DISASSOC:
3350                 wpas_event_disassoc(wpa_s,
3351                                     data ? &data->disassoc_info : NULL);
3352                 break;
3353         case EVENT_DEAUTH:
3354                 wpas_event_deauth(wpa_s,
3355                                   data ? &data->deauth_info : NULL);
3356                 break;
3357         case EVENT_MICHAEL_MIC_FAILURE:
3358                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
3359                 break;
3360 #ifndef CONFIG_NO_SCAN_PROCESSING
3361         case EVENT_SCAN_STARTED:
3362                 if (wpa_s->own_scan_requested ||
3363                     (data && !data->scan_info.external_scan)) {
3364                         struct os_reltime diff;
3365
3366                         os_get_reltime(&wpa_s->scan_start_time);
3367                         os_reltime_sub(&wpa_s->scan_start_time,
3368                                        &wpa_s->scan_trigger_time, &diff);
3369                         wpa_dbg(wpa_s, MSG_DEBUG, "Own scan request started a scan in %ld.%06ld seconds",
3370                                 diff.sec, diff.usec);
3371                         wpa_s->own_scan_requested = 0;
3372                         wpa_s->own_scan_running = 1;
3373                         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
3374                             wpa_s->manual_scan_use_id) {
3375                                 wpa_msg_ctrl(wpa_s, MSG_INFO,
3376                                              WPA_EVENT_SCAN_STARTED "id=%u",
3377                                              wpa_s->manual_scan_id);
3378                         } else {
3379                                 wpa_msg_ctrl(wpa_s, MSG_INFO,
3380                                              WPA_EVENT_SCAN_STARTED);
3381                         }
3382                 } else {
3383                         wpa_dbg(wpa_s, MSG_DEBUG, "External program started a scan");
3384                         wpa_s->radio->external_scan_running = 1;
3385                         wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
3386                 }
3387                 break;
3388         case EVENT_SCAN_RESULTS:
3389                 if (!(data && data->scan_info.external_scan) &&
3390                     os_reltime_initialized(&wpa_s->scan_start_time)) {
3391                         struct os_reltime now, diff;
3392                         os_get_reltime(&now);
3393                         os_reltime_sub(&now, &wpa_s->scan_start_time, &diff);
3394                         wpa_s->scan_start_time.sec = 0;
3395                         wpa_s->scan_start_time.usec = 0;
3396                         wpa_dbg(wpa_s, MSG_DEBUG, "Scan completed in %ld.%06ld seconds",
3397                                 diff.sec, diff.usec);
3398                 }
3399                 if (wpa_supplicant_event_scan_results(wpa_s, data))
3400                         break; /* interface may have been removed */
3401                 if (!(data && data->scan_info.external_scan))
3402                         wpa_s->own_scan_running = 0;
3403                 if (data && data->scan_info.nl_scan_event)
3404                         wpa_s->radio->external_scan_running = 0;
3405                 radio_work_check_next(wpa_s);
3406                 break;
3407 #endif /* CONFIG_NO_SCAN_PROCESSING */
3408         case EVENT_ASSOCINFO:
3409                 wpa_supplicant_event_associnfo(wpa_s, data);
3410                 break;
3411         case EVENT_INTERFACE_STATUS:
3412                 wpa_supplicant_event_interface_status(wpa_s, data);
3413                 break;
3414         case EVENT_PMKID_CANDIDATE:
3415                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
3416                 break;
3417 #ifdef CONFIG_PEERKEY
3418         case EVENT_STKSTART:
3419                 wpa_supplicant_event_stkstart(wpa_s, data);
3420                 break;
3421 #endif /* CONFIG_PEERKEY */
3422 #ifdef CONFIG_TDLS
3423         case EVENT_TDLS:
3424                 wpa_supplicant_event_tdls(wpa_s, data);
3425                 break;
3426 #endif /* CONFIG_TDLS */
3427 #ifdef CONFIG_WNM
3428         case EVENT_WNM:
3429                 wpa_supplicant_event_wnm(wpa_s, data);
3430                 break;
3431 #endif /* CONFIG_WNM */
3432 #ifdef CONFIG_IEEE80211R
3433         case EVENT_FT_RESPONSE:
3434                 wpa_supplicant_event_ft_response(wpa_s, data);
3435                 break;
3436 #endif /* CONFIG_IEEE80211R */
3437 #ifdef CONFIG_IBSS_RSN
3438         case EVENT_IBSS_RSN_START:
3439                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
3440                 break;
3441 #endif /* CONFIG_IBSS_RSN */
3442         case EVENT_ASSOC_REJECT:
3443                 if (data->assoc_reject.bssid)
3444                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3445                                 "bssid=" MACSTR " status_code=%u",
3446                                 MAC2STR(data->assoc_reject.bssid),
3447                                 data->assoc_reject.status_code);
3448                 else
3449                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3450                                 "status_code=%u",
3451                                 data->assoc_reject.status_code);
3452                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3453                         sme_event_assoc_reject(wpa_s, data);
3454                 else {
3455                         const u8 *bssid = data->assoc_reject.bssid;
3456                         if (bssid == NULL || is_zero_ether_addr(bssid))
3457                                 bssid = wpa_s->pending_bssid;
3458                         wpas_connection_failed(wpa_s, bssid);
3459                         wpa_supplicant_mark_disassoc(wpa_s);
3460                 }
3461                 break;
3462         case EVENT_AUTH_TIMED_OUT:
3463                 /* It is possible to get this event from earlier connection */
3464                 if (wpa_s->current_ssid &&
3465                     wpa_s->current_ssid->mode == WPAS_MODE_MESH) {
3466                         wpa_dbg(wpa_s, MSG_DEBUG,
3467                                 "Ignore AUTH_TIMED_OUT in mesh configuration");
3468                         break;
3469                 }
3470                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3471                         sme_event_auth_timed_out(wpa_s, data);
3472                 break;
3473         case EVENT_ASSOC_TIMED_OUT:
3474                 /* It is possible to get this event from earlier connection */
3475                 if (wpa_s->current_ssid &&
3476                     wpa_s->current_ssid->mode == WPAS_MODE_MESH) {
3477                         wpa_dbg(wpa_s, MSG_DEBUG,
3478                                 "Ignore ASSOC_TIMED_OUT in mesh configuration");
3479                         break;
3480                 }
3481                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3482                         sme_event_assoc_timed_out(wpa_s, data);
3483                 break;
3484         case EVENT_TX_STATUS:
3485                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
3486                         " type=%d stype=%d",
3487                         MAC2STR(data->tx_status.dst),
3488                         data->tx_status.type, data->tx_status.stype);
3489 #ifdef CONFIG_AP
3490                 if (wpa_s->ap_iface == NULL) {
3491 #ifdef CONFIG_OFFCHANNEL
3492                         if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3493                             data->tx_status.stype == WLAN_FC_STYPE_ACTION)
3494                                 offchannel_send_action_tx_status(
3495                                         wpa_s, data->tx_status.dst,
3496                                         data->tx_status.data,
3497                                         data->tx_status.data_len,
3498                                         data->tx_status.ack ?
3499                                         OFFCHANNEL_SEND_ACTION_SUCCESS :
3500                                         OFFCHANNEL_SEND_ACTION_NO_ACK);
3501 #endif /* CONFIG_OFFCHANNEL */
3502                         break;
3503                 }
3504 #endif /* CONFIG_AP */
3505 #ifdef CONFIG_OFFCHANNEL
3506                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
3507                         MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
3508                 /*
3509                  * Catch TX status events for Action frames we sent via group
3510                  * interface in GO mode.
3511                  */
3512                 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3513                     data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
3514                     os_memcmp(wpa_s->parent->pending_action_dst,
3515                               data->tx_status.dst, ETH_ALEN) == 0) {
3516                         offchannel_send_action_tx_status(
3517                                 wpa_s->parent, data->tx_status.dst,
3518                                 data->tx_status.data,
3519                                 data->tx_status.data_len,
3520                                 data->tx_status.ack ?
3521                                 OFFCHANNEL_SEND_ACTION_SUCCESS :
3522                                 OFFCHANNEL_SEND_ACTION_NO_ACK);
3523                         break;
3524                 }
3525 #endif /* CONFIG_OFFCHANNEL */
3526 #ifdef CONFIG_AP
3527                 switch (data->tx_status.type) {
3528                 case WLAN_FC_TYPE_MGMT:
3529                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
3530                                       data->tx_status.data_len,
3531                                       data->tx_status.stype,
3532                                       data->tx_status.ack);
3533                         break;
3534                 case WLAN_FC_TYPE_DATA:
3535                         ap_tx_status(wpa_s, data->tx_status.dst,
3536                                      data->tx_status.data,
3537                                      data->tx_status.data_len,
3538                                      data->tx_status.ack);
3539                         break;
3540                 }
3541 #endif /* CONFIG_AP */
3542                 break;
3543 #ifdef CONFIG_AP
3544         case EVENT_EAPOL_TX_STATUS:
3545                 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
3546                                    data->eapol_tx_status.data,
3547                                    data->eapol_tx_status.data_len,
3548                                    data->eapol_tx_status.ack);
3549                 break;
3550         case EVENT_DRIVER_CLIENT_POLL_OK:
3551                 ap_client_poll_ok(wpa_s, data->client_poll.addr);
3552                 break;
3553         case EVENT_RX_FROM_UNKNOWN:
3554                 if (wpa_s->ap_iface == NULL)
3555                         break;
3556                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
3557                                        data->rx_from_unknown.wds);
3558                 break;
3559         case EVENT_CH_SWITCH:
3560                 if (!data || !wpa_s->current_ssid)
3561                         break;
3562
3563                 wpa_s->assoc_freq = data->ch_switch.freq;
3564                 wpa_s->current_ssid->frequency = data->ch_switch.freq;
3565
3566                 if (wpa_s->current_ssid->mode == WPAS_MODE_AP ||
3567                     wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO ||
3568                     wpa_s->current_ssid->mode ==
3569                     WPAS_MODE_P2P_GROUP_FORMATION) {
3570                         wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
3571                                           data->ch_switch.ht_enabled,
3572                                           data->ch_switch.ch_offset,
3573                                           data->ch_switch.ch_width,
3574                                           data->ch_switch.cf1,
3575                                           data->ch_switch.cf2);
3576                 }
3577
3578                 wpas_p2p_update_channel_list(wpa_s, WPAS_P2P_CHANNEL_UPDATE_CS);
3579                 break;
3580 #ifdef NEED_AP_MLME
3581         case EVENT_DFS_RADAR_DETECTED:
3582                 if (data)
3583                         wpas_event_dfs_radar_detected(wpa_s, &data->dfs_event);
3584                 break;
3585         case EVENT_DFS_CAC_STARTED:
3586                 if (data)
3587                         wpas_event_dfs_cac_started(wpa_s, &data->dfs_event);
3588                 break;
3589         case EVENT_DFS_CAC_FINISHED:
3590                 if (data)
3591                         wpas_event_dfs_cac_finished(wpa_s, &data->dfs_event);
3592                 break;
3593         case EVENT_DFS_CAC_ABORTED:
3594                 if (data)
3595                         wpas_event_dfs_cac_aborted(wpa_s, &data->dfs_event);
3596                 break;
3597         case EVENT_DFS_NOP_FINISHED:
3598                 if (data)
3599                         wpas_event_dfs_cac_nop_finished(wpa_s,
3600                                                         &data->dfs_event);
3601                 break;
3602 #endif /* NEED_AP_MLME */
3603 #endif /* CONFIG_AP */
3604         case EVENT_RX_MGMT: {
3605                 u16 fc, stype;
3606                 const struct ieee80211_mgmt *mgmt;
3607
3608 #ifdef CONFIG_TESTING_OPTIONS
3609                 if (wpa_s->ext_mgmt_frame_handling) {
3610                         struct rx_mgmt *rx = &data->rx_mgmt;
3611                         size_t hex_len = 2 * rx->frame_len + 1;
3612                         char *hex = os_malloc(hex_len);
3613                         if (hex) {
3614                                 wpa_snprintf_hex(hex, hex_len,
3615                                                  rx->frame, rx->frame_len);
3616                                 wpa_msg(wpa_s, MSG_INFO, "MGMT-RX freq=%d datarate=%u ssi_signal=%d %s",
3617                                         rx->freq, rx->datarate, rx->ssi_signal,
3618                                         hex);
3619                                 os_free(hex);
3620                         }
3621                         break;
3622                 }
3623 #endif /* CONFIG_TESTING_OPTIONS */
3624
3625                 mgmt = (const struct ieee80211_mgmt *)
3626                         data->rx_mgmt.frame;
3627                 fc = le_to_host16(mgmt->frame_control);
3628                 stype = WLAN_FC_GET_STYPE(fc);
3629
3630 #ifdef CONFIG_AP
3631                 if (wpa_s->ap_iface == NULL) {
3632 #endif /* CONFIG_AP */
3633 #ifdef CONFIG_P2P
3634                         if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3635                             data->rx_mgmt.frame_len > 24) {
3636                                 const u8 *src = mgmt->sa;
3637                                 const u8 *ie = mgmt->u.probe_req.variable;
3638                                 size_t ie_len = data->rx_mgmt.frame_len -
3639                                         (mgmt->u.probe_req.variable -
3640                                          data->rx_mgmt.frame);
3641                                 wpas_p2p_probe_req_rx(
3642                                         wpa_s, src, mgmt->da,
3643                                         mgmt->bssid, ie, ie_len,
3644                                         data->rx_mgmt.freq,
3645                                         data->rx_mgmt.ssi_signal);
3646                                 break;
3647                         }
3648 #endif /* CONFIG_P2P */
3649 #ifdef CONFIG_IBSS_RSN
3650                         if (wpa_s->current_ssid &&
3651                             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
3652                             stype == WLAN_FC_STYPE_AUTH &&
3653                             data->rx_mgmt.frame_len >= 30) {
3654                                 wpa_supplicant_event_ibss_auth(wpa_s, data);
3655                                 break;
3656                         }
3657 #endif /* CONFIG_IBSS_RSN */
3658
3659                         if (stype == WLAN_FC_STYPE_ACTION) {
3660                                 wpas_event_rx_mgmt_action(
3661                                         wpa_s, data->rx_mgmt.frame,
3662                                         data->rx_mgmt.frame_len,
3663                                         data->rx_mgmt.freq,
3664                                         data->rx_mgmt.ssi_signal);
3665                                 break;
3666                         }
3667
3668                         if (wpa_s->ifmsh) {
3669                                 mesh_mpm_mgmt_rx(wpa_s, &data->rx_mgmt);
3670                                 break;
3671                         }
3672
3673                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
3674                                 "management frame in non-AP mode");
3675                         break;
3676 #ifdef CONFIG_AP
3677                 }
3678
3679                 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3680                     data->rx_mgmt.frame_len > 24) {
3681                         const u8 *ie = mgmt->u.probe_req.variable;
3682                         size_t ie_len = data->rx_mgmt.frame_len -
3683                                 (mgmt->u.probe_req.variable -
3684                                  data->rx_mgmt.frame);
3685
3686                         wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
3687                                          mgmt->bssid, ie, ie_len,
3688                                          data->rx_mgmt.ssi_signal);
3689                 }
3690
3691                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
3692 #endif /* CONFIG_AP */
3693                 break;
3694                 }
3695         case EVENT_RX_PROBE_REQ:
3696                 if (data->rx_probe_req.sa == NULL ||
3697                     data->rx_probe_req.ie == NULL)
3698                         break;
3699 #ifdef CONFIG_AP
3700                 if (wpa_s->ap_iface) {
3701                         hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
3702                                              data->rx_probe_req.sa,
3703                                              data->rx_probe_req.da,
3704                                              data->rx_probe_req.bssid,
3705                                              data->rx_probe_req.ie,
3706                                              data->rx_probe_req.ie_len,
3707                                              data->rx_probe_req.ssi_signal);
3708                         break;
3709                 }
3710 #endif /* CONFIG_AP */
3711                 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
3712                                       data->rx_probe_req.da,
3713                                       data->rx_probe_req.bssid,
3714                                       data->rx_probe_req.ie,
3715                                       data->rx_probe_req.ie_len,
3716                                       0,
3717                                       data->rx_probe_req.ssi_signal);
3718                 break;
3719         case EVENT_REMAIN_ON_CHANNEL:
3720 #ifdef CONFIG_OFFCHANNEL
3721                 offchannel_remain_on_channel_cb(
3722                         wpa_s, data->remain_on_channel.freq,
3723                         data->remain_on_channel.duration);
3724 #endif /* CONFIG_OFFCHANNEL */
3725                 wpas_p2p_remain_on_channel_cb(
3726                         wpa_s, data->remain_on_channel.freq,
3727                         data->remain_on_channel.duration);
3728                 break;
3729         case EVENT_CANCEL_REMAIN_ON_CHANNEL:
3730 #ifdef CONFIG_OFFCHANNEL
3731                 offchannel_cancel_remain_on_channel_cb(
3732                         wpa_s, data->remain_on_channel.freq);
3733 #endif /* CONFIG_OFFCHANNEL */
3734                 wpas_p2p_cancel_remain_on_channel_cb(
3735                         wpa_s, data->remain_on_channel.freq);
3736                 break;
3737         case EVENT_EAPOL_RX:
3738                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
3739                                         data->eapol_rx.data,
3740                                         data->eapol_rx.data_len);
3741                 break;
3742         case EVENT_SIGNAL_CHANGE:
3743                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SIGNAL_CHANGE
3744                         "above=%d signal=%d noise=%d txrate=%d",
3745                         data->signal_change.above_threshold,
3746                         data->signal_change.current_signal,
3747                         data->signal_change.current_noise,
3748                         data->signal_change.current_txrate);
3749                 wpa_bss_update_level(wpa_s->current_bss,
3750                                      data->signal_change.current_signal);
3751                 bgscan_notify_signal_change(
3752                         wpa_s, data->signal_change.above_threshold,
3753                         data->signal_change.current_signal,
3754                         data->signal_change.current_noise,
3755                         data->signal_change.current_txrate);
3756                 break;
3757         case EVENT_INTERFACE_ENABLED:
3758                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
3759                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
3760                         wpa_supplicant_update_mac_addr(wpa_s);
3761                         if (wpa_s->p2p_mgmt) {
3762                                 wpa_supplicant_set_state(wpa_s,
3763                                                          WPA_DISCONNECTED);
3764                                 break;
3765                         }
3766
3767 #ifdef CONFIG_AP
3768                         if (!wpa_s->ap_iface) {
3769                                 wpa_supplicant_set_state(wpa_s,
3770                                                          WPA_DISCONNECTED);
3771                                 wpa_s->scan_req = NORMAL_SCAN_REQ;
3772                                 wpa_supplicant_req_scan(wpa_s, 0, 0);
3773                         } else
3774                                 wpa_supplicant_set_state(wpa_s,
3775                                                          WPA_COMPLETED);
3776 #else /* CONFIG_AP */
3777                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
3778                         wpa_supplicant_req_scan(wpa_s, 0, 0);
3779 #endif /* CONFIG_AP */
3780                 }
3781                 break;
3782         case EVENT_INTERFACE_DISABLED:
3783                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
3784 #ifdef CONFIG_P2P
3785                 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
3786                     (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group &&
3787                      wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)) {
3788                         /*
3789                          * Mark interface disabled if this happens to end up not
3790                          * being removed as a separate P2P group interface.
3791                          */
3792                         wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3793                         /*
3794                          * The interface was externally disabled. Remove
3795                          * it assuming an external entity will start a
3796                          * new session if needed.
3797                          */
3798                         if (wpa_s->current_ssid &&
3799                             wpa_s->current_ssid->p2p_group)
3800                                 wpas_p2p_interface_unavailable(wpa_s);
3801                         else
3802                                 wpas_p2p_disconnect(wpa_s);
3803                         /*
3804                          * wpa_s instance may have been freed, so must not use
3805                          * it here anymore.
3806                          */
3807                         break;
3808                 }
3809                 if (wpa_s->p2p_scan_work && wpa_s->global->p2p &&
3810                     p2p_in_progress(wpa_s->global->p2p) > 1) {
3811                         /* This radio work will be cancelled, so clear P2P
3812                          * state as well.
3813                          */
3814                         p2p_stop_find(wpa_s->global->p2p);
3815                 }
3816 #endif /* CONFIG_P2P */
3817
3818                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
3819                         /*
3820                          * Indicate disconnection to keep ctrl_iface events
3821                          * consistent.
3822                          */
3823                         wpa_supplicant_event_disassoc(
3824                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING, 1);
3825                 }
3826                 wpa_supplicant_mark_disassoc(wpa_s);
3827                 radio_remove_works(wpa_s, NULL, 0);
3828
3829                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3830                 break;
3831         case EVENT_CHANNEL_LIST_CHANGED:
3832                 wpa_supplicant_update_channel_list(
3833                         wpa_s, &data->channel_list_changed);
3834                 break;
3835         case EVENT_INTERFACE_UNAVAILABLE:
3836                 wpas_p2p_interface_unavailable(wpa_s);
3837                 break;
3838         case EVENT_BEST_CHANNEL:
3839                 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
3840                         "(%d %d %d)",
3841                         data->best_chan.freq_24, data->best_chan.freq_5,
3842                         data->best_chan.freq_overall);
3843                 wpa_s->best_24_freq = data->best_chan.freq_24;
3844                 wpa_s->best_5_freq = data->best_chan.freq_5;
3845                 wpa_s->best_overall_freq = data->best_chan.freq_overall;
3846                 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
3847                                               data->best_chan.freq_5,
3848                                               data->best_chan.freq_overall);
3849                 break;
3850         case EVENT_UNPROT_DEAUTH:
3851                 wpa_supplicant_event_unprot_deauth(wpa_s,
3852                                                    &data->unprot_deauth);
3853                 break;
3854         case EVENT_UNPROT_DISASSOC:
3855                 wpa_supplicant_event_unprot_disassoc(wpa_s,
3856                                                      &data->unprot_disassoc);
3857                 break;
3858         case EVENT_STATION_LOW_ACK:
3859 #ifdef CONFIG_AP
3860                 if (wpa_s->ap_iface && data)
3861                         hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
3862                                                   data->low_ack.addr);
3863 #endif /* CONFIG_AP */
3864 #ifdef CONFIG_TDLS
3865                 if (data)
3866                         wpa_tdls_disable_unreachable_link(wpa_s->wpa,
3867                                                           data->low_ack.addr);
3868 #endif /* CONFIG_TDLS */
3869                 break;
3870         case EVENT_IBSS_PEER_LOST:
3871 #ifdef CONFIG_IBSS_RSN
3872                 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
3873 #endif /* CONFIG_IBSS_RSN */
3874                 break;
3875         case EVENT_DRIVER_GTK_REKEY:
3876                 if (os_memcmp(data->driver_gtk_rekey.bssid,
3877                               wpa_s->bssid, ETH_ALEN))
3878                         break;
3879                 if (!wpa_s->wpa)
3880                         break;
3881                 wpa_sm_update_replay_ctr(wpa_s->wpa,
3882                                          data->driver_gtk_rekey.replay_ctr);
3883                 break;
3884         case EVENT_SCHED_SCAN_STOPPED:
3885                 wpa_s->pno = 0;
3886                 wpa_s->sched_scanning = 0;
3887                 resched = wpa_s->scanning;
3888                 wpa_supplicant_notify_scanning(wpa_s, 0);
3889
3890                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
3891                         break;
3892
3893                 /*
3894                  * Start a new sched scan to continue searching for more SSIDs
3895                  * either if timed out or PNO schedule scan is pending.
3896                  */
3897                 if (wpa_s->sched_scan_timed_out) {
3898                         wpa_supplicant_req_sched_scan(wpa_s);
3899                 } else if (wpa_s->pno_sched_pending) {
3900                         wpa_s->pno_sched_pending = 0;
3901                         wpas_start_pno(wpa_s);
3902                 } else if (resched) {
3903                         wpa_supplicant_req_scan(wpa_s, 0, 0);
3904                 }
3905
3906                 break;
3907         case EVENT_WPS_BUTTON_PUSHED:
3908 #ifdef CONFIG_WPS
3909                 wpas_wps_start_pbc(wpa_s, NULL, 0);
3910 #endif /* CONFIG_WPS */
3911                 break;
3912         case EVENT_AVOID_FREQUENCIES:
3913                 wpa_supplicant_notify_avoid_freq(wpa_s, data);
3914                 break;
3915         case EVENT_CONNECT_FAILED_REASON:
3916 #ifdef CONFIG_AP
3917                 if (!wpa_s->ap_iface || !data)
3918                         break;
3919                 hostapd_event_connect_failed_reason(
3920                         wpa_s->ap_iface->bss[0],
3921                         data->connect_failed_reason.addr,
3922                         data->connect_failed_reason.code);
3923 #endif /* CONFIG_AP */
3924                 break;
3925         case EVENT_NEW_PEER_CANDIDATE:
3926 #ifdef CONFIG_MESH
3927                 if (!wpa_s->ifmsh || !data)
3928                         break;
3929                 wpa_mesh_notify_peer(wpa_s, data->mesh_peer.peer,
3930                                      data->mesh_peer.ies,
3931                                      data->mesh_peer.ie_len);
3932 #endif /* CONFIG_MESH */
3933                 break;
3934         default:
3935                 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
3936                 break;
3937         }
3938 }