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 "wnm_sta.h"
  27 #include "notify.h"
  28 #include "common/ieee802_11_defs.h"
  29 #include "common/ieee802_11_common.h"
  30 #include "crypto/random.h"
  31 #include "blacklist.h"
  32 #include "wpas_glue.h"
  33 #include "wps_supplicant.h"
  34 #include "ibss_rsn.h"
  35 #include "sme.h"
  36 #include "gas_query.h"
  37 #include "p2p_supplicant.h"
  38 #include "bgscan.h"
  39 #include "autoscan.h"
  40 #include "ap.h"
  41 #include "bss.h"
  42 #include "scan.h"
  43 #include "offchannel.h"
  44 #include "interworking.h"
  45 #include "mesh.h"
  46 #include "mesh_mpm.h"
  47 #include "wmm_ac.h"
  48
  49
  50 #ifndef CONFIG_NO_SCAN_PROCESSING
  51 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
  52                                               int new_scan, int own_request);
  53 #endif /* CONFIG_NO_SCAN_PROCESSING */
  54
  55
  56 static int wpas_temp_disabled(struct wpa_supplicant *wpa_s,
  57                               struct wpa_ssid *ssid)
  58 {
  59         struct os_reltime now;
  60
  61         if (ssid == NULL || ssid->disabled_until.sec == 0)
  62                 return 0;
  63
  64         os_get_reltime(&now);
  65         if (ssid->disabled_until.sec > now.sec)
  66                 return ssid->disabled_until.sec - now.sec;
  67
  68         wpas_clear_temp_disabled(wpa_s, ssid, 0);
  69
  70         return 0;
  71 }
  72
  73
  74 static struct wpa_bss * wpa_supplicant_get_new_bss(
  75         struct wpa_supplicant *wpa_s, const u8 *bssid)
  76 {
  77         struct wpa_bss *bss = NULL;
  78         struct wpa_ssid *ssid = wpa_s->current_ssid;
  79
  80         if (ssid->ssid_len > 0)
  81                 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
  82         if (!bss)
  83                 bss = wpa_bss_get_bssid(wpa_s, bssid);
  84
  85         return bss;
  86 }
  87
  88
  89 static void wpa_supplicant_update_current_bss(struct wpa_supplicant *wpa_s)
  90 {
  91         struct wpa_bss *bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
  92
  93         if (!bss) {
  94                 wpa_supplicant_update_scan_results(wpa_s);
  95
  96                 /* Get the BSS from the new scan results */
  97                 bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
  98         }
  99
 100         if (bss)
 101                 wpa_s->current_bss = bss;
 102 }
 103
 104
 105 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
 106 {
 107         struct wpa_ssid *ssid, *old_ssid;
 108         int res;
 109
 110         if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid) {
 111                 wpa_supplicant_update_current_bss(wpa_s);
 112                 return 0;
 113         }
 114
 115         wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
 116                 "information");
 117         ssid = wpa_supplicant_get_ssid(wpa_s);
 118         if (ssid == NULL) {
 119                 wpa_msg(wpa_s, MSG_INFO,
 120                         "No network configuration found for the current AP");
 121                 return -1;
 122         }
 123
 124         if (wpas_network_disabled(wpa_s, ssid)) {
 125                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
 126                 return -1;
 127         }
 128
 129         if (disallowed_bssid(wpa_s, wpa_s->bssid) ||
 130             disallowed_ssid(wpa_s, ssid->ssid, ssid->ssid_len)) {
 131                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS is disallowed");
 132                 return -1;
 133         }
 134
 135         res = wpas_temp_disabled(wpa_s, ssid);
 136         if (res > 0) {
 137                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is temporarily "
 138                         "disabled for %d second(s)", res);
 139                 return -1;
 140         }
 141
 142         wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
 143                 "current AP");
 144         if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
 145                 u8 wpa_ie[80];
 146                 size_t wpa_ie_len = sizeof(wpa_ie);
 147                 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
 148                                               wpa_ie, &wpa_ie_len) < 0)
 149                         wpa_dbg(wpa_s, MSG_DEBUG, "Could not set WPA suites");
 150         } else {
 151                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
 152         }
 153
 154         if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
 155                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
 156         old_ssid = wpa_s->current_ssid;
 157         wpa_s->current_ssid = ssid;
 158
 159         wpa_supplicant_update_current_bss(wpa_s);
 160
 161         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
 162         wpa_supplicant_initiate_eapol(wpa_s);
 163         if (old_ssid != wpa_s->current_ssid)
 164                 wpas_notify_network_changed(wpa_s);
 165
 166         return 0;
 167 }
 168
 169
 170 void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx)
 171 {
 172         struct wpa_supplicant *wpa_s = eloop_ctx;
 173
 174         if (wpa_s->countermeasures) {
 175                 wpa_s->countermeasures = 0;
 176                 wpa_drv_set_countermeasures(wpa_s, 0);
 177                 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
 178
 179                 /*
 180                  * It is possible that the device is sched scanning, which means
 181                  * that a connection attempt will be done only when we receive
 182                  * scan results. However, in this case, it would be preferable
 183                  * to scan and connect immediately, so cancel the sched_scan and
 184                  * issue a regular scan flow.
 185                  */
 186                 wpa_supplicant_cancel_sched_scan(wpa_s);
 187                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 188         }
 189 }
 190
 191
 192 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
 193 {
 194         int bssid_changed;
 195
 196         wnm_bss_keep_alive_deinit(wpa_s);
 197
 198 #ifdef CONFIG_IBSS_RSN
 199         ibss_rsn_deinit(wpa_s->ibss_rsn);
 200         wpa_s->ibss_rsn = NULL;
 201 #endif /* CONFIG_IBSS_RSN */
 202
 203 #ifdef CONFIG_AP
 204         wpa_supplicant_ap_deinit(wpa_s);
 205 #endif /* CONFIG_AP */
 206
 207         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
 208                 return;
 209
 210         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 211         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 212         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 213         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 214         sme_clear_on_disassoc(wpa_s);
 215 #ifdef CONFIG_P2P
 216         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
 217 #endif /* CONFIG_P2P */
 218         wpa_s->current_bss = NULL;
 219         wpa_s->assoc_freq = 0;
 220
 221         if (bssid_changed)
 222                 wpas_notify_bssid_changed(wpa_s);
 223
 224         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
 225         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 226         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
 227                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 228         wpa_s->ap_ies_from_associnfo = 0;
 229         wpa_s->current_ssid = NULL;
 230         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 231         wpa_s->key_mgmt = 0;
 232
 233         wpas_rrm_reset(wpa_s);
 234 }
 235
 236
 237 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
 238 {
 239         struct wpa_ie_data ie;
 240         int pmksa_set = -1;
 241         size_t i;
 242
 243         if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
 244             ie.pmkid == NULL)
 245                 return;
 246
 247         for (i = 0; i < ie.num_pmkid; i++) {
 248                 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
 249                                                     ie.pmkid + i * PMKID_LEN,
 250                                                     NULL, NULL, 0);
 251                 if (pmksa_set == 0) {
 252                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol);
 253                         break;
 254                 }
 255         }
 256
 257         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
 258                 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
 259 }
 260
 261
 262 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
 263                                                  union wpa_event_data *data)
 264 {
 265         if (data == NULL) {
 266                 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
 267                         "event");
 268                 return;
 269         }
 270         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
 271                 " index=%d preauth=%d",
 272                 MAC2STR(data->pmkid_candidate.bssid),
 273                 data->pmkid_candidate.index,
 274                 data->pmkid_candidate.preauth);
 275
 276         pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
 277                             data->pmkid_candidate.index,
 278                             data->pmkid_candidate.preauth);
 279 }
 280
 281
 282 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
 283 {
 284         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 285             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
 286                 return 0;
 287
 288 #ifdef IEEE8021X_EAPOL
 289         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
 290             wpa_s->current_ssid &&
 291             !(wpa_s->current_ssid->eapol_flags &
 292               (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 293                EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
 294                 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
 295                  * plaintext or static WEP keys). */
 296                 return 0;
 297         }
 298 #endif /* IEEE8021X_EAPOL */
 299
 300         return 1;
 301 }
 302
 303
 304 /**
 305  * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
 306  * @wpa_s: pointer to wpa_supplicant data
 307  * @ssid: Configuration data for the network
 308  * Returns: 0 on success, -1 on failure
 309  *
 310  * This function is called when starting authentication with a network that is
 311  * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
 312  */
 313 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 314                               struct wpa_ssid *ssid)
 315 {
 316 #ifdef IEEE8021X_EAPOL
 317 #ifdef PCSC_FUNCS
 318         int aka = 0, sim = 0;
 319
 320         if ((ssid != NULL && ssid->eap.pcsc == NULL) ||
 321             wpa_s->scard != NULL || wpa_s->conf->external_sim)
 322                 return 0;
 323
 324         if (ssid == NULL || ssid->eap.eap_methods == NULL) {
 325                 sim = 1;
 326                 aka = 1;
 327         } else {
 328                 struct eap_method_type *eap = ssid->eap.eap_methods;
 329                 while (eap->vendor != EAP_VENDOR_IETF ||
 330                        eap->method != EAP_TYPE_NONE) {
 331                         if (eap->vendor == EAP_VENDOR_IETF) {
 332                                 if (eap->method == EAP_TYPE_SIM)
 333                                         sim = 1;
 334                                 else if (eap->method == EAP_TYPE_AKA ||
 335                                          eap->method == EAP_TYPE_AKA_PRIME)
 336                                         aka = 1;
 337                         }
 338                         eap++;
 339                 }
 340         }
 341
 342         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
 343                 sim = 0;
 344         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL &&
 345             eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME) ==
 346             NULL)
 347                 aka = 0;
 348
 349         if (!sim && !aka) {
 350                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
 351                         "use SIM, but neither EAP-SIM nor EAP-AKA are "
 352                         "enabled");
 353                 return 0;
 354         }
 355
 356         wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
 357                 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
 358
 359         wpa_s->scard = scard_init(wpa_s->conf->pcsc_reader);
 360         if (wpa_s->scard == NULL) {
 361                 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
 362                         "(pcsc-lite)");
 363                 return -1;
 364         }
 365         wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
 366         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
 367 #endif /* PCSC_FUNCS */
 368 #endif /* IEEE8021X_EAPOL */
 369
 370         return 0;
 371 }
 372
 373
 374 #ifndef CONFIG_NO_SCAN_PROCESSING
 375
 376 static int has_wep_key(struct wpa_ssid *ssid)
 377 {
 378         int i;
 379
 380         for (i = 0; i < NUM_WEP_KEYS; i++) {
 381                 if (ssid->wep_key_len[i])
 382                         return 1;
 383         }
 384
 385         return 0;
 386 }
 387
 388
 389 static int wpa_supplicant_match_privacy(struct wpa_bss *bss,
 390                                         struct wpa_ssid *ssid)
 391 {
 392         int privacy = 0;
 393
 394         if (ssid->mixed_cell)
 395                 return 1;
 396
 397 #ifdef CONFIG_WPS
 398         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
 399                 return 1;
 400 #endif /* CONFIG_WPS */
 401
 402         if (has_wep_key(ssid))
 403                 privacy = 1;
 404
 405 #ifdef IEEE8021X_EAPOL
 406         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
 407             ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 408                                  EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
 409                 privacy = 1;
 410 #endif /* IEEE8021X_EAPOL */
 411
 412         if (wpa_key_mgmt_wpa(ssid->key_mgmt))
 413                 privacy = 1;
 414
 415         if (ssid->key_mgmt & WPA_KEY_MGMT_OSEN)
 416                 privacy = 1;
 417
 418         if (bss->caps & IEEE80211_CAP_PRIVACY)
 419                 return privacy;
 420         return !privacy;
 421 }
 422
 423
 424 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
 425                                          struct wpa_ssid *ssid,
 426                                          struct wpa_bss *bss)
 427 {
 428         struct wpa_ie_data ie;
 429         int proto_match = 0;
 430         const u8 *rsn_ie, *wpa_ie;
 431         int ret;
 432         int wep_ok;
 433
 434         ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
 435         if (ret >= 0)
 436                 return ret;
 437
 438         /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
 439         wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 440                 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 441                   ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
 442                  (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
 443
 444         rsn_ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 445         while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
 446                 proto_match++;
 447
 448                 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
 449                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - parse "
 450                                 "failed");
 451                         break;
 452                 }
 453
 454                 if (wep_ok &&
 455                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 456                 {
 457                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 458                                 "in RSN IE");
 459                         return 1;
 460                 }
 461
 462                 if (!(ie.proto & ssid->proto)) {
 463                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - proto "
 464                                 "mismatch");
 465                         break;
 466                 }
 467
 468                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 469                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - PTK "
 470                                 "cipher mismatch");
 471                         break;
 472                 }
 473
 474                 if (!(ie.group_cipher & ssid->group_cipher)) {
 475                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - GTK "
 476                                 "cipher mismatch");
 477                         break;
 478                 }
 479
 480                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 481                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - key mgmt "
 482                                 "mismatch");
 483                         break;
 484                 }
 485
 486 #ifdef CONFIG_IEEE80211W
 487                 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
 488                     wpas_get_ssid_pmf(wpa_s, ssid) ==
 489                     MGMT_FRAME_PROTECTION_REQUIRED) {
 490                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - no mgmt "
 491                                 "frame protection");
 492                         break;
 493                 }
 494 #endif /* CONFIG_IEEE80211W */
 495
 496                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on RSN IE");
 497                 return 1;
 498         }
 499
 500         wpa_ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 501         while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
 502                 proto_match++;
 503
 504                 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
 505                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - parse "
 506                                 "failed");
 507                         break;
 508                 }
 509
 510                 if (wep_ok &&
 511                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 512                 {
 513                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 514                                 "in WPA IE");
 515                         return 1;
 516                 }
 517
 518                 if (!(ie.proto & ssid->proto)) {
 519                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - proto "
 520                                 "mismatch");
 521                         break;
 522                 }
 523
 524                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 525                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - PTK "
 526                                 "cipher mismatch");
 527                         break;
 528                 }
 529
 530                 if (!(ie.group_cipher & ssid->group_cipher)) {
 531                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - GTK "
 532                                 "cipher mismatch");
 533                         break;
 534                 }
 535
 536                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 537                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - key mgmt "
 538                                 "mismatch");
 539                         break;
 540                 }
 541
 542                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on WPA IE");
 543                 return 1;
 544         }
 545
 546         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && !wpa_ie &&
 547             !rsn_ie) {
 548                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow for non-WPA IEEE 802.1X");
 549                 return 1;
 550         }
 551
 552         if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
 553             wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
 554                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no WPA/RSN proto match");
 555                 return 0;
 556         }
 557
 558         if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) &&
 559             wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE)) {
 560                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in OSEN");
 561                 return 1;
 562         }
 563
 564         if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
 565                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in non-WPA/WPA2");
 566                 return 1;
 567         }
 568
 569         wpa_dbg(wpa_s, MSG_DEBUG, "   reject due to mismatch with "
 570                 "WPA/WPA2");
 571
 572         return 0;
 573 }
 574
 575
 576 static int freq_allowed(int *freqs, int freq)
 577 {
 578         int i;
 579
 580         if (freqs == NULL)
 581                 return 1;
 582
 583         for (i = 0; freqs[i]; i++)
 584                 if (freqs[i] == freq)
 585                         return 1;
 586         return 0;
 587 }
 588
 589
 590 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
 591 {
 592         const struct hostapd_hw_modes *mode = NULL, *modes;
 593         const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES };
 594         const u8 *rate_ie;
 595         int i, j, k;
 596
 597         if (bss->freq == 0)
 598                 return 1; /* Cannot do matching without knowing band */
 599
 600         modes = wpa_s->hw.modes;
 601         if (modes == NULL) {
 602                 /*
 603                  * The driver does not provide any additional information
 604                  * about the utilized hardware, so allow the connection attempt
 605                  * to continue.
 606                  */
 607                 return 1;
 608         }
 609
 610         for (i = 0; i < wpa_s->hw.num_modes; i++) {
 611                 for (j = 0; j < modes[i].num_channels; j++) {
 612                         int freq = modes[i].channels[j].freq;
 613                         if (freq == bss->freq) {
 614                                 if (mode &&
 615                                     mode->mode == HOSTAPD_MODE_IEEE80211G)
 616                                         break; /* do not allow 802.11b replace
 617                                                 * 802.11g */
 618                                 mode = &modes[i];
 619                                 break;
 620                         }
 621                 }
 622         }
 623
 624         if (mode == NULL)
 625                 return 0;
 626
 627         for (i = 0; i < (int) sizeof(scan_ie); i++) {
 628                 rate_ie = wpa_bss_get_ie(bss, scan_ie[i]);
 629                 if (rate_ie == NULL)
 630                         continue;
 631
 632                 for (j = 2; j < rate_ie[1] + 2; j++) {
 633                         int flagged = !!(rate_ie[j] & 0x80);
 634                         int r = (rate_ie[j] & 0x7f) * 5;
 635
 636                         /*
 637                          * IEEE Std 802.11n-2009 7.3.2.2:
 638                          * The new BSS Membership selector value is encoded
 639                          * like a legacy basic rate, but it is not a rate and
 640                          * only indicates if the BSS members are required to
 641                          * support the mandatory features of Clause 20 [HT PHY]
 642                          * in order to join the BSS.
 643                          */
 644                         if (flagged && ((rate_ie[j] & 0x7f) ==
 645                                         BSS_MEMBERSHIP_SELECTOR_HT_PHY)) {
 646                                 if (!ht_supported(mode)) {
 647                                         wpa_dbg(wpa_s, MSG_DEBUG,
 648                                                 "   hardware does not support "
 649                                                 "HT PHY");
 650                                         return 0;
 651                                 }
 652                                 continue;
 653                         }
 654
 655                         /* There's also a VHT selector for 802.11ac */
 656                         if (flagged && ((rate_ie[j] & 0x7f) ==
 657                                         BSS_MEMBERSHIP_SELECTOR_VHT_PHY)) {
 658                                 if (!vht_supported(mode)) {
 659                                         wpa_dbg(wpa_s, MSG_DEBUG,
 660                                                 "   hardware does not support "
 661                                                 "VHT PHY");
 662                                         return 0;
 663                                 }
 664                                 continue;
 665                         }
 666
 667                         if (!flagged)
 668                                 continue;
 669
 670                         /* check for legacy basic rates */
 671                         for (k = 0; k < mode->num_rates; k++) {
 672                                 if (mode->rates[k] == r)
 673                                         break;
 674                         }
 675                         if (k == mode->num_rates) {
 676                                 /*
 677                                  * IEEE Std 802.11-2007 7.3.2.2 demands that in
 678                                  * order to join a BSS all required rates
 679                                  * have to be supported by the hardware.
 680                                  */
 681                                 wpa_dbg(wpa_s, MSG_DEBUG, "   hardware does "
 682                                         "not support required rate %d.%d Mbps",
 683                                         r / 10, r % 10);
 684                                 return 0;
 685                         }
 686                 }
 687         }
 688
 689         return 1;
 690 }
 691
 692
 693 /*
 694  * Test whether BSS is in an ESS.
 695  * This is done differently in DMG (60 GHz) and non-DMG bands
 696  */
 697 static int bss_is_ess(struct wpa_bss *bss)
 698 {
 699         if (bss_is_dmg(bss)) {
 700                 return (bss->caps & IEEE80211_CAP_DMG_MASK) ==
 701                         IEEE80211_CAP_DMG_AP;
 702         }
 703
 704         return ((bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) ==
 705                 IEEE80211_CAP_ESS);
 706 }
 707
 708
 709 static int match_mac_mask(const u8 *addr_a, const u8 *addr_b, const u8 *mask)
 710 {
 711         size_t i;
 712
 713         for (i = 0; i < ETH_ALEN; i++) {
 714                 if ((addr_a[i] & mask[i]) != (addr_b[i] & mask[i]))
 715                         return 0;
 716         }
 717         return 1;
 718 }
 719
 720
 721 static int addr_in_list(const u8 *addr, const u8 *list, size_t num)
 722 {
 723         size_t i;
 724
 725         for (i = 0; i < num; i++) {
 726                 const u8 *a = list + i * ETH_ALEN * 2;
 727                 const u8 *m = a + ETH_ALEN;
 728
 729                 if (match_mac_mask(a, addr, m))
 730                         return 1;
 731         }
 732         return 0;
 733 }
 734
 735
 736 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
 737                                             int i, struct wpa_bss *bss,
 738                                             struct wpa_ssid *group,
 739                                             int only_first_ssid)
 740 {
 741         u8 wpa_ie_len, rsn_ie_len;
 742         int wpa;
 743         struct wpa_blacklist *e;
 744         const u8 *ie;
 745         struct wpa_ssid *ssid;
 746         int osen;
 747
 748         ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 749         wpa_ie_len = ie ? ie[1] : 0;
 750
 751         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 752         rsn_ie_len = ie ? ie[1] : 0;
 753
 754         ie = wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE);
 755         osen = ie != NULL;
 756
 757         wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
 758                 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s%s%s",
 759                 i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len),
 760                 wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
 761                 wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "",
 762                 (wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) ||
 763                  wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) ?
 764                 " p2p" : "",
 765                 osen ? " osen=1" : "");
 766
 767         e = wpa_blacklist_get(wpa_s, bss->bssid);
 768         if (e) {
 769                 int limit = 1;
 770                 if (wpa_supplicant_enabled_networks(wpa_s) == 1) {
 771                         /*
 772                          * When only a single network is enabled, we can
 773                          * trigger blacklisting on the first failure. This
 774                          * should not be done with multiple enabled networks to
 775                          * avoid getting forced to move into a worse ESS on
 776                          * single error if there are no other BSSes of the
 777                          * current ESS.
 778                          */
 779                         limit = 0;
 780                 }
 781                 if (e->count > limit) {
 782                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 783                                 "(count=%d limit=%d)", e->count, limit);
 784                         return NULL;
 785                 }
 786         }
 787
 788         if (bss->ssid_len == 0) {
 789                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID not known");
 790                 return NULL;
 791         }
 792
 793         if (disallowed_bssid(wpa_s, bss->bssid)) {
 794                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID disallowed");
 795                 return NULL;
 796         }
 797
 798         if (disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
 799                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID disallowed");
 800                 return NULL;
 801         }
 802
 803         wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
 804
 805         for (ssid = group; ssid; ssid = only_first_ssid ? NULL : ssid->pnext) {
 806                 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
 807                 int res;
 808
 809                 if (wpas_network_disabled(wpa_s, ssid)) {
 810                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled");
 811                         continue;
 812                 }
 813
 814                 res = wpas_temp_disabled(wpa_s, ssid);
 815                 if (res > 0) {
 816                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled "
 817                                 "temporarily for %d second(s)", res);
 818                         continue;
 819                 }
 820
 821 #ifdef CONFIG_WPS
 822                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
 823                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 824                                 "(WPS)");
 825                         continue;
 826                 }
 827
 828                 if (wpa && ssid->ssid_len == 0 &&
 829                     wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 830                         check_ssid = 0;
 831
 832                 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 833                         /* Only allow wildcard SSID match if an AP
 834                          * advertises active WPS operation that matches
 835                          * with our mode. */
 836                         check_ssid = 1;
 837                         if (ssid->ssid_len == 0 &&
 838                             wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 839                                 check_ssid = 0;
 840                 }
 841 #endif /* CONFIG_WPS */
 842
 843                 if (ssid->bssid_set && ssid->ssid_len == 0 &&
 844                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
 845                         check_ssid = 0;
 846
 847                 if (check_ssid &&
 848                     (bss->ssid_len != ssid->ssid_len ||
 849                      os_memcmp(bss->ssid, ssid->ssid, bss->ssid_len) != 0)) {
 850                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID mismatch");
 851                         continue;
 852                 }
 853
 854                 if (ssid->bssid_set &&
 855                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
 856                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID mismatch");
 857                         continue;
 858                 }
 859
 860                 /* check blacklist */
 861                 if (ssid->num_bssid_blacklist &&
 862                     addr_in_list(bss->bssid, ssid->bssid_blacklist,
 863                                  ssid->num_bssid_blacklist)) {
 864                         wpa_dbg(wpa_s, MSG_DEBUG,
 865                                 "   skip - BSSID blacklisted");
 866                         continue;
 867                 }
 868
 869                 /* if there is a whitelist, only accept those APs */
 870                 if (ssid->num_bssid_whitelist &&
 871                     !addr_in_list(bss->bssid, ssid->bssid_whitelist,
 872                                   ssid->num_bssid_whitelist)) {
 873                         wpa_dbg(wpa_s, MSG_DEBUG,
 874                                 "   skip - BSSID not in whitelist");
 875                         continue;
 876                 }
 877
 878                 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
 879                         continue;
 880
 881                 if (!osen && !wpa &&
 882                     !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 883                     !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
 884                     !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
 885                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-WPA network "
 886                                 "not allowed");
 887                         continue;
 888                 }
 889
 890                 if (wpa && !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 891                     has_wep_key(ssid)) {
 892                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - ignore WPA/WPA2 AP for WEP network block");
 893                         continue;
 894                 }
 895
 896                 if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) && !osen) {
 897                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-OSEN network "
 898                                 "not allowed");
 899                         continue;
 900                 }
 901
 902                 if (!wpa_supplicant_match_privacy(bss, ssid)) {
 903                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - privacy "
 904                                 "mismatch");
 905                         continue;
 906                 }
 907
 908                 if (!bss_is_ess(bss)) {
 909                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - not ESS network");
 910                         continue;
 911                 }
 912
 913                 if (!freq_allowed(ssid->freq_list, bss->freq)) {
 914                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - frequency not "
 915                                 "allowed");
 916                         continue;
 917                 }
 918
 919                 if (!rate_match(wpa_s, bss)) {
 920                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - rate sets do "
 921                                 "not match");
 922                         continue;
 923                 }
 924
 925 #ifdef CONFIG_P2P
 926                 if (ssid->p2p_group &&
 927                     !wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 928                     !wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 929                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P IE seen");
 930                         continue;
 931                 }
 932
 933                 if (!is_zero_ether_addr(ssid->go_p2p_dev_addr)) {
 934                         struct wpabuf *p2p_ie;
 935                         u8 dev_addr[ETH_ALEN];
 936
 937                         ie = wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE);
 938                         if (ie == NULL) {
 939                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P element");
 940                                 continue;
 941                         }
 942                         p2p_ie = wpa_bss_get_vendor_ie_multi(
 943                                 bss, P2P_IE_VENDOR_TYPE);
 944                         if (p2p_ie == NULL) {
 945                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - could not fetch P2P element");
 946                                 continue;
 947                         }
 948
 949                         if (p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr) < 0
 950                             || os_memcmp(dev_addr, ssid->go_p2p_dev_addr,
 951                                          ETH_ALEN) != 0) {
 952                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no matching GO P2P Device Address in P2P element");
 953                                 wpabuf_free(p2p_ie);
 954                                 continue;
 955                         }
 956                         wpabuf_free(p2p_ie);
 957                 }
 958
 959                 /*
 960                  * TODO: skip the AP if its P2P IE has Group Formation
 961                  * bit set in the P2P Group Capability Bitmap and we
 962                  * are not in Group Formation with that device.
 963                  */
 964 #endif /* CONFIG_P2P */
 965
 966                 /* Matching configuration found */
 967                 return ssid;
 968         }
 969
 970         /* No matching configuration found */
 971         return NULL;
 972 }
 973
 974
 975 static struct wpa_bss *
 976 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
 977                           struct wpa_ssid *group,
 978                           struct wpa_ssid **selected_ssid,
 979                           int only_first_ssid)
 980 {
 981         unsigned int i;
 982
 983         if (only_first_ssid)
 984                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to find BSS matching pre-selected network id=%d",
 985                         group->id);
 986         else
 987                 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
 988                         group->priority);
 989
 990         for (i = 0; i < wpa_s->last_scan_res_used; i++) {
 991                 struct wpa_bss *bss = wpa_s->last_scan_res[i];
 992                 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group,
 993                                                     only_first_ssid);
 994                 if (!*selected_ssid)
 995                         continue;
 996                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected BSS " MACSTR
 997                         " ssid='%s'",
 998                         MAC2STR(bss->bssid),
 999                         wpa_ssid_txt(bss->ssid, bss->ssid_len));
1000                 return bss;
1001         }
1002
1003         return NULL;
1004 }
1005
1006
1007 struct wpa_bss * wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
1008                                              struct wpa_ssid **selected_ssid)
1009 {
1010         struct wpa_bss *selected = NULL;
1011         int prio;
1012         struct wpa_ssid *next_ssid = NULL;
1013
1014         if (wpa_s->last_scan_res == NULL ||
1015             wpa_s->last_scan_res_used == 0)
1016                 return NULL; /* no scan results from last update */
1017
1018         if (wpa_s->next_ssid) {
1019                 struct wpa_ssid *ssid;
1020
1021                 /* check that next_ssid is still valid */
1022                 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1023                         if (ssid == wpa_s->next_ssid)
1024                                 break;
1025                 }
1026                 next_ssid = ssid;
1027                 wpa_s->next_ssid = NULL;
1028         }
1029
1030         while (selected == NULL) {
1031                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1032                         if (next_ssid && next_ssid->priority ==
1033                             wpa_s->conf->pssid[prio]->priority) {
1034                                 selected = wpa_supplicant_select_bss(
1035                                         wpa_s, next_ssid, selected_ssid, 1);
1036                                 if (selected)
1037                                         break;
1038                         }
1039                         selected = wpa_supplicant_select_bss(
1040                                 wpa_s, wpa_s->conf->pssid[prio],
1041                                 selected_ssid, 0);
1042                         if (selected)
1043                                 break;
1044                 }
1045
1046                 if (selected == NULL && wpa_s->blacklist &&
1047                     !wpa_s->countermeasures) {
1048                         wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
1049                                 "blacklist and try again");
1050                         wpa_blacklist_clear(wpa_s);
1051                         wpa_s->blacklist_cleared++;
1052                 } else if (selected == NULL)
1053                         break;
1054         }
1055
1056         return selected;
1057 }
1058
1059
1060 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
1061                                         int timeout_sec, int timeout_usec)
1062 {
1063         if (!wpa_supplicant_enabled_networks(wpa_s)) {
1064                 /*
1065                  * No networks are enabled; short-circuit request so
1066                  * we don't wait timeout seconds before transitioning
1067                  * to INACTIVE state.
1068                  */
1069                 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request "
1070                         "since there are no enabled networks");
1071                 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
1072                 return;
1073         }
1074
1075         wpa_s->scan_for_connection = 1;
1076         wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
1077 }
1078
1079
1080 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
1081                            struct wpa_bss *selected,
1082                            struct wpa_ssid *ssid)
1083 {
1084         if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
1085                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
1086                         "PBC session overlap");
1087 #ifdef CONFIG_P2P
1088                 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
1089                     wpa_s->p2p_in_provisioning) {
1090                         eloop_register_timeout(0, 0, wpas_p2p_pbc_overlap_cb,
1091                                                wpa_s, NULL);
1092                         return -1;
1093                 }
1094 #endif /* CONFIG_P2P */
1095
1096 #ifdef CONFIG_WPS
1097                 wpas_wps_cancel(wpa_s);
1098 #endif /* CONFIG_WPS */
1099                 return -1;
1100         }
1101
1102         wpa_msg(wpa_s, MSG_DEBUG,
1103                 "Considering connect request: reassociate: %d  selected: "
1104                 MACSTR "  bssid: " MACSTR "  pending: " MACSTR
1105                 "  wpa_state: %s  ssid=%p  current_ssid=%p",
1106                 wpa_s->reassociate, MAC2STR(selected->bssid),
1107                 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
1108                 wpa_supplicant_state_txt(wpa_s->wpa_state),
1109                 ssid, wpa_s->current_ssid);
1110
1111         /*
1112          * Do not trigger new association unless the BSSID has changed or if
1113          * reassociation is requested. If we are in process of associating with
1114          * the selected BSSID, do not trigger new attempt.
1115          */
1116         if (wpa_s->reassociate ||
1117             (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
1118              ((wpa_s->wpa_state != WPA_ASSOCIATING &&
1119                wpa_s->wpa_state != WPA_AUTHENTICATING) ||
1120               (!is_zero_ether_addr(wpa_s->pending_bssid) &&
1121                os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
1122                0) ||
1123               (is_zero_ether_addr(wpa_s->pending_bssid) &&
1124                ssid != wpa_s->current_ssid)))) {
1125                 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
1126                         wpa_supplicant_req_new_scan(wpa_s, 10, 0);
1127                         return 0;
1128                 }
1129                 wpa_msg(wpa_s, MSG_DEBUG, "Request association with " MACSTR,
1130                         MAC2STR(selected->bssid));
1131                 wpa_supplicant_associate(wpa_s, selected, ssid);
1132         } else {
1133                 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated or trying to "
1134                         "connect with the selected AP");
1135         }
1136
1137         return 0;
1138 }
1139
1140
1141 static struct wpa_ssid *
1142 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
1143 {
1144         int prio;
1145         struct wpa_ssid *ssid;
1146
1147         for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1148                 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
1149                 {
1150                         if (wpas_network_disabled(wpa_s, ssid))
1151                                 continue;
1152                         if (ssid->mode == IEEE80211_MODE_IBSS ||
1153                             ssid->mode == IEEE80211_MODE_AP ||
1154                             ssid->mode == IEEE80211_MODE_MESH)
1155                                 return ssid;
1156                 }
1157         }
1158         return NULL;
1159 }
1160
1161
1162 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
1163  * on BSS added and BSS changed events */
1164 static void wpa_supplicant_rsn_preauth_scan_results(
1165         struct wpa_supplicant *wpa_s)
1166 {
1167         struct wpa_bss *bss;
1168
1169         if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
1170                 return;
1171
1172         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1173                 const u8 *ssid, *rsn;
1174
1175                 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
1176                 if (ssid == NULL)
1177                         continue;
1178
1179                 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1180                 if (rsn == NULL)
1181                         continue;
1182
1183                 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
1184         }
1185
1186 }
1187
1188
1189 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
1190                                        struct wpa_bss *selected,
1191                                        struct wpa_ssid *ssid)
1192 {
1193         struct wpa_bss *current_bss = NULL;
1194         int min_diff;
1195
1196         if (wpa_s->reassociate)
1197                 return 1; /* explicit request to reassociate */
1198         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1199                 return 1; /* we are not associated; continue */
1200         if (wpa_s->current_ssid == NULL)
1201                 return 1; /* unknown current SSID */
1202         if (wpa_s->current_ssid != ssid)
1203                 return 1; /* different network block */
1204
1205         if (wpas_driver_bss_selection(wpa_s))
1206                 return 0; /* Driver-based roaming */
1207
1208         if (wpa_s->current_ssid->ssid)
1209                 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid,
1210                                           wpa_s->current_ssid->ssid,
1211                                           wpa_s->current_ssid->ssid_len);
1212         if (!current_bss)
1213                 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
1214
1215         if (!current_bss)
1216                 return 1; /* current BSS not seen in scan results */
1217
1218         if (current_bss == selected)
1219                 return 0;
1220
1221         if (selected->last_update_idx > current_bss->last_update_idx)
1222                 return 1; /* current BSS not seen in the last scan */
1223
1224 #ifndef CONFIG_NO_ROAMING
1225         wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
1226         wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
1227                 MAC2STR(current_bss->bssid), current_bss->level);
1228         wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
1229                 MAC2STR(selected->bssid), selected->level);
1230
1231         if (wpa_s->current_ssid->bssid_set &&
1232             os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
1233             0) {
1234                 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
1235                         "has preferred BSSID");
1236                 return 1;
1237         }
1238
1239         if (current_bss->level < 0 && current_bss->level > selected->level) {
1240                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better "
1241                         "signal level");
1242                 return 0;
1243         }
1244
1245         min_diff = 2;
1246         if (current_bss->level < 0) {
1247                 if (current_bss->level < -85)
1248                         min_diff = 1;
1249                 else if (current_bss->level < -80)
1250                         min_diff = 2;
1251                 else if (current_bss->level < -75)
1252                         min_diff = 3;
1253                 else if (current_bss->level < -70)
1254                         min_diff = 4;
1255                 else
1256                         min_diff = 5;
1257         }
1258         if (abs(current_bss->level - selected->level) < min_diff) {
1259                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
1260                         "in signal level");
1261                 return 0;
1262         }
1263
1264         return 1;
1265 #else /* CONFIG_NO_ROAMING */
1266         return 0;
1267 #endif /* CONFIG_NO_ROAMING */
1268 }
1269
1270
1271 /* Return != 0 if no scan results could be fetched or if scan results should not
1272  * be shared with other virtual interfaces. */
1273 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1274                                               union wpa_event_data *data,
1275                                               int own_request)
1276 {
1277         struct wpa_scan_results *scan_res = NULL;
1278         int ret = 0;
1279         int ap = 0;
1280 #ifndef CONFIG_NO_RANDOM_POOL
1281         size_t i, num;
1282 #endif /* CONFIG_NO_RANDOM_POOL */
1283
1284 #ifdef CONFIG_AP
1285         if (wpa_s->ap_iface)
1286                 ap = 1;
1287 #endif /* CONFIG_AP */
1288
1289         wpa_supplicant_notify_scanning(wpa_s, 0);
1290
1291         scan_res = wpa_supplicant_get_scan_results(wpa_s,
1292                                                    data ? &data->scan_info :
1293                                                    NULL, 1);
1294         if (scan_res == NULL) {
1295                 if (wpa_s->conf->ap_scan == 2 || ap ||
1296                     wpa_s->scan_res_handler == scan_only_handler)
1297                         return -1;
1298                 if (!own_request)
1299                         return -1;
1300                 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1301                         "scanning again");
1302                 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1303                 ret = -1;
1304                 goto scan_work_done;
1305         }
1306
1307 #ifndef CONFIG_NO_RANDOM_POOL
1308         num = scan_res->num;
1309         if (num > 10)
1310                 num = 10;
1311         for (i = 0; i < num; i++) {
1312                 u8 buf[5];
1313                 struct wpa_scan_res *res = scan_res->res[i];
1314                 buf[0] = res->bssid[5];
1315                 buf[1] = res->qual & 0xff;
1316                 buf[2] = res->noise & 0xff;
1317                 buf[3] = res->level & 0xff;
1318                 buf[4] = res->tsf & 0xff;
1319                 random_add_randomness(buf, sizeof(buf));
1320         }
1321 #endif /* CONFIG_NO_RANDOM_POOL */
1322
1323         if (own_request && wpa_s->scan_res_handler &&
1324             (wpa_s->own_scan_running || !wpa_s->radio->external_scan_running)) {
1325                 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1326                                          struct wpa_scan_results *scan_res);
1327
1328                 scan_res_handler = wpa_s->scan_res_handler;
1329                 wpa_s->scan_res_handler = NULL;
1330                 scan_res_handler(wpa_s, scan_res);
1331                 ret = -2;
1332                 goto scan_work_done;
1333         }
1334
1335         if (ap) {
1336                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1337 #ifdef CONFIG_AP
1338                 if (wpa_s->ap_iface->scan_cb)
1339                         wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1340 #endif /* CONFIG_AP */
1341                 goto scan_work_done;
1342         }
1343
1344         wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available (own=%u ext=%u)",
1345                 wpa_s->own_scan_running, wpa_s->radio->external_scan_running);
1346         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
1347             wpa_s->manual_scan_use_id && wpa_s->own_scan_running) {
1348                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS "id=%u",
1349                              wpa_s->manual_scan_id);
1350                 wpa_s->manual_scan_use_id = 0;
1351         } else {
1352                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1353         }
1354         wpas_notify_scan_results(wpa_s);
1355
1356         wpas_notify_scan_done(wpa_s, 1);
1357
1358         if (!wpa_s->own_scan_running && wpa_s->radio->external_scan_running) {
1359                 wpa_dbg(wpa_s, MSG_DEBUG, "Do not use results from externally requested scan operation for network selection");
1360                 wpa_scan_results_free(scan_res);
1361                 return 0;
1362         }
1363
1364         if (wnm_scan_process(wpa_s, 1) > 0)
1365                 goto scan_work_done;
1366
1367         if (sme_proc_obss_scan(wpa_s) > 0)
1368                 goto scan_work_done;
1369
1370         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s)))
1371                 goto scan_work_done;
1372
1373         if (autoscan_notify_scan(wpa_s, scan_res))
1374                 goto scan_work_done;
1375
1376         if (wpa_s->disconnected) {
1377                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1378                 goto scan_work_done;
1379         }
1380
1381         if (!wpas_driver_bss_selection(wpa_s) &&
1382             bgscan_notify_scan(wpa_s, scan_res) == 1)
1383                 goto scan_work_done;
1384
1385         wpas_wps_update_ap_info(wpa_s, scan_res);
1386
1387         wpa_scan_results_free(scan_res);
1388
1389         if (wpa_s->scan_work) {
1390                 struct wpa_radio_work *work = wpa_s->scan_work;
1391                 wpa_s->scan_work = NULL;
1392                 radio_work_done(work);
1393         }
1394
1395         return wpas_select_network_from_last_scan(wpa_s, 1, own_request);
1396
1397 scan_work_done:
1398         wpa_scan_results_free(scan_res);
1399         if (wpa_s->scan_work) {
1400                 struct wpa_radio_work *work = wpa_s->scan_work;
1401                 wpa_s->scan_work = NULL;
1402                 radio_work_done(work);
1403         }
1404         return ret;
1405 }
1406
1407
1408 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
1409                                               int new_scan, int own_request)
1410 {
1411         struct wpa_bss *selected;
1412         struct wpa_ssid *ssid = NULL;
1413
1414         selected = wpa_supplicant_pick_network(wpa_s, &ssid);
1415
1416         if (selected) {
1417                 int skip;
1418                 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid);
1419                 if (skip) {
1420                         if (new_scan)
1421                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1422                         return 0;
1423                 }
1424
1425                 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1426                         wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1427                         return -1;
1428                 }
1429                 if (new_scan)
1430                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1431                 /*
1432                  * Do not notify other virtual radios of scan results since we do not
1433                  * want them to start other associations at the same time.
1434                  */
1435                 return 1;
1436         } else {
1437 #ifdef CONFIG_MESH
1438                 if (wpa_s->ifmsh) {
1439                         wpa_msg(wpa_s, MSG_INFO,
1440                                 "Avoiding join because we already joined a mesh group");
1441                         return 0;
1442                 }
1443 #endif /* CONFIG_MESH */
1444                 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1445                 ssid = wpa_supplicant_pick_new_network(wpa_s);
1446                 if (ssid) {
1447                         wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1448                         wpa_supplicant_associate(wpa_s, NULL, ssid);
1449                         if (new_scan)
1450                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1451                 } else if (own_request) {
1452                         /*
1453                          * No SSID found. If SCAN results are as a result of
1454                          * own scan request and not due to a scan request on
1455                          * another shared interface, try another scan.
1456                          */
1457                         int timeout_sec = wpa_s->scan_interval;
1458                         int timeout_usec = 0;
1459 #ifdef CONFIG_P2P
1460                         int res;
1461
1462                         res = wpas_p2p_scan_no_go_seen(wpa_s);
1463                         if (res == 2)
1464                                 return 2;
1465                         if (res == 1)
1466                                 return 0;
1467
1468                         if (wpa_s->p2p_in_provisioning ||
1469                             wpa_s->show_group_started ||
1470                             wpa_s->p2p_in_invitation) {
1471                                 /*
1472                                  * Use shorter wait during P2P Provisioning
1473                                  * state and during P2P join-a-group operation
1474                                  * to speed up group formation.
1475                                  */
1476                                 timeout_sec = 0;
1477                                 timeout_usec = 250000;
1478                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1479                                                             timeout_usec);
1480                                 return 0;
1481                         }
1482 #endif /* CONFIG_P2P */
1483 #ifdef CONFIG_INTERWORKING
1484                         if (wpa_s->conf->auto_interworking &&
1485                             wpa_s->conf->interworking &&
1486                             wpa_s->conf->cred) {
1487                                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: "
1488                                         "start ANQP fetch since no matching "
1489                                         "networks found");
1490                                 wpa_s->network_select = 1;
1491                                 wpa_s->auto_network_select = 1;
1492                                 interworking_start_fetch_anqp(wpa_s);
1493                                 return 1;
1494                         }
1495 #endif /* CONFIG_INTERWORKING */
1496 #ifdef CONFIG_WPS
1497                         if (wpa_s->after_wps > 0 || wpas_wps_searching(wpa_s)) {
1498                                 wpa_dbg(wpa_s, MSG_DEBUG, "Use shorter wait during WPS processing");
1499                                 timeout_sec = 0;
1500                                 timeout_usec = 500000;
1501                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1502                                                             timeout_usec);
1503                                 return 0;
1504                         }
1505 #endif /* CONFIG_WPS */
1506                         if (wpa_supplicant_req_sched_scan(wpa_s))
1507                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1508                                                             timeout_usec);
1509                 }
1510         }
1511         return 0;
1512 }
1513
1514
1515 static int wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1516                                              union wpa_event_data *data)
1517 {
1518         struct wpa_supplicant *ifs;
1519         int res;
1520
1521         res = _wpa_supplicant_event_scan_results(wpa_s, data, 1);
1522         if (res == 2) {
1523                 /*
1524                  * Interface may have been removed, so must not dereference
1525                  * wpa_s after this.
1526                  */
1527                 return 1;
1528         }
1529         if (res != 0) {
1530                 /*
1531                  * If no scan results could be fetched, then no need to
1532                  * notify those interfaces that did not actually request
1533                  * this scan. Similarly, if scan results started a new operation on this
1534                  * interface, do not notify other interfaces to avoid concurrent
1535                  * operations during a connection attempt.
1536                  */
1537                 return 0;
1538         }
1539
1540         /*
1541          * Check other interfaces to see if they share the same radio. If
1542          * so, they get updated with this same scan info.
1543          */
1544         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
1545                          radio_list) {
1546                 if (ifs != wpa_s) {
1547                         wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1548                                    "sibling", ifs->ifname);
1549                         _wpa_supplicant_event_scan_results(ifs, data, 0);
1550                 }
1551         }
1552
1553         return 0;
1554 }
1555
1556 #endif /* CONFIG_NO_SCAN_PROCESSING */
1557
1558
1559 int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s)
1560 {
1561 #ifdef CONFIG_NO_SCAN_PROCESSING
1562         return -1;
1563 #else /* CONFIG_NO_SCAN_PROCESSING */
1564         struct os_reltime now;
1565
1566         if (wpa_s->last_scan_res_used <= 0)
1567                 return -1;
1568
1569         os_get_reltime(&now);
1570         if (os_reltime_expired(&now, &wpa_s->last_scan, 5)) {
1571                 wpa_printf(MSG_DEBUG, "Fast associate: Old scan results");
1572                 return -1;
1573         }
1574
1575         return wpas_select_network_from_last_scan(wpa_s, 0, 1);
1576 #endif /* CONFIG_NO_SCAN_PROCESSING */
1577 }
1578
1579 #ifdef CONFIG_WNM
1580
1581 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx)
1582 {
1583         struct wpa_supplicant *wpa_s = eloop_ctx;
1584
1585         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1586                 return;
1587
1588         if (!wpa_s->no_keep_alive) {
1589                 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR,
1590                            MAC2STR(wpa_s->bssid));
1591                 /* TODO: could skip this if normal data traffic has been sent */
1592                 /* TODO: Consider using some more appropriate data frame for
1593                  * this */
1594                 if (wpa_s->l2)
1595                         l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800,
1596                                        (u8 *) "", 0);
1597         }
1598
1599 #ifdef CONFIG_SME
1600         if (wpa_s->sme.bss_max_idle_period) {
1601                 unsigned int msec;
1602                 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */
1603                 if (msec > 100)
1604                         msec -= 100;
1605                 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1606                                        wnm_bss_keep_alive, wpa_s, NULL);
1607         }
1608 #endif /* CONFIG_SME */
1609 }
1610
1611
1612 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s,
1613                                    const u8 *ies, size_t ies_len)
1614 {
1615         struct ieee802_11_elems elems;
1616
1617         if (ies == NULL)
1618                 return;
1619
1620         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1621                 return;
1622
1623 #ifdef CONFIG_SME
1624         if (elems.bss_max_idle_period) {
1625                 unsigned int msec;
1626                 wpa_s->sme.bss_max_idle_period =
1627                         WPA_GET_LE16(elems.bss_max_idle_period);
1628                 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 "
1629                            "TU)%s", wpa_s->sme.bss_max_idle_period,
1630                            (elems.bss_max_idle_period[2] & 0x01) ?
1631                            " (protected keep-live required)" : "");
1632                 if (wpa_s->sme.bss_max_idle_period == 0)
1633                         wpa_s->sme.bss_max_idle_period = 1;
1634                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
1635                         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1636                          /* msec times 1000 */
1637                         msec = wpa_s->sme.bss_max_idle_period * 1024;
1638                         if (msec > 100)
1639                                 msec -= 100;
1640                         eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1641                                                wnm_bss_keep_alive, wpa_s,
1642                                                NULL);
1643                 }
1644         }
1645 #endif /* CONFIG_SME */
1646 }
1647
1648 #endif /* CONFIG_WNM */
1649
1650
1651 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s)
1652 {
1653 #ifdef CONFIG_WNM
1654         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1655 #endif /* CONFIG_WNM */
1656 }
1657
1658
1659 #ifdef CONFIG_INTERWORKING
1660
1661 static int wpas_qos_map_set(struct wpa_supplicant *wpa_s, const u8 *qos_map,
1662                             size_t len)
1663 {
1664         int res;
1665
1666         wpa_hexdump(MSG_DEBUG, "Interworking: QoS Map Set", qos_map, len);
1667         res = wpa_drv_set_qos_map(wpa_s, qos_map, len);
1668         if (res) {
1669                 wpa_printf(MSG_DEBUG, "Interworking: Failed to configure QoS Map Set to the driver");
1670         }
1671
1672         return res;
1673 }
1674
1675
1676 static void interworking_process_assoc_resp(struct wpa_supplicant *wpa_s,
1677                                             const u8 *ies, size_t ies_len)
1678 {
1679         struct ieee802_11_elems elems;
1680
1681         if (ies == NULL)
1682                 return;
1683
1684         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1685                 return;
1686
1687         if (elems.qos_map_set) {
1688                 wpas_qos_map_set(wpa_s, elems.qos_map_set,
1689                                  elems.qos_map_set_len);
1690         }
1691 }
1692
1693 #endif /* CONFIG_INTERWORKING */
1694
1695
1696 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1697                                           union wpa_event_data *data)
1698 {
1699         int l, len, found = 0, wpa_found, rsn_found;
1700         const u8 *p;
1701 #ifdef CONFIG_IEEE80211R
1702         u8 bssid[ETH_ALEN];
1703 #endif /* CONFIG_IEEE80211R */
1704
1705         wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1706         if (data->assoc_info.req_ies)
1707                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1708                             data->assoc_info.req_ies_len);
1709         if (data->assoc_info.resp_ies) {
1710                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1711                             data->assoc_info.resp_ies_len);
1712 #ifdef CONFIG_TDLS
1713                 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1714                                         data->assoc_info.resp_ies_len);
1715 #endif /* CONFIG_TDLS */
1716 #ifdef CONFIG_WNM
1717                 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1718                                        data->assoc_info.resp_ies_len);
1719 #endif /* CONFIG_WNM */
1720 #ifdef CONFIG_INTERWORKING
1721                 interworking_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1722                                                 data->assoc_info.resp_ies_len);
1723 #endif /* CONFIG_INTERWORKING */
1724         }
1725         if (data->assoc_info.beacon_ies)
1726                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1727                             data->assoc_info.beacon_ies,
1728                             data->assoc_info.beacon_ies_len);
1729         if (data->assoc_info.freq)
1730                 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1731                         data->assoc_info.freq);
1732
1733         p = data->assoc_info.req_ies;
1734         l = data->assoc_info.req_ies_len;
1735
1736         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1737         while (p && l >= 2) {
1738                 len = p[1] + 2;
1739                 if (len > l) {
1740                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1741                                     p, l);
1742                         break;
1743                 }
1744                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1745                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1746                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1747                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1748                                 break;
1749                         found = 1;
1750                         wpa_find_assoc_pmkid(wpa_s);
1751                         break;
1752                 }
1753                 l -= len;
1754                 p += len;
1755         }
1756         if (!found && data->assoc_info.req_ies)
1757                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1758
1759 #ifdef CONFIG_IEEE80211R
1760 #ifdef CONFIG_SME
1761         if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1762                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1763                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1764                                                  data->assoc_info.resp_ies,
1765                                                  data->assoc_info.resp_ies_len,
1766                                                  bssid) < 0) {
1767                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1768                                 "Reassociation Response failed");
1769                         wpa_supplicant_deauthenticate(
1770                                 wpa_s, WLAN_REASON_INVALID_IE);
1771                         return -1;
1772                 }
1773         }
1774
1775         p = data->assoc_info.resp_ies;
1776         l = data->assoc_info.resp_ies_len;
1777
1778 #ifdef CONFIG_WPS_STRICT
1779         if (p && wpa_s->current_ssid &&
1780             wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1781                 struct wpabuf *wps;
1782                 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1783                 if (wps == NULL) {
1784                         wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1785                                 "include WPS IE in (Re)Association Response");
1786                         return -1;
1787                 }
1788
1789                 if (wps_validate_assoc_resp(wps) < 0) {
1790                         wpabuf_free(wps);
1791                         wpa_supplicant_deauthenticate(
1792                                 wpa_s, WLAN_REASON_INVALID_IE);
1793                         return -1;
1794                 }
1795                 wpabuf_free(wps);
1796         }
1797 #endif /* CONFIG_WPS_STRICT */
1798
1799         /* Go through the IEs and make a copy of the MDIE, if present. */
1800         while (p && l >= 2) {
1801                 len = p[1] + 2;
1802                 if (len > l) {
1803                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1804                                     p, l);
1805                         break;
1806                 }
1807                 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1808                     p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1809                         wpa_s->sme.ft_used = 1;
1810                         os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1811                                   MOBILITY_DOMAIN_ID_LEN);
1812                         break;
1813                 }
1814                 l -= len;
1815                 p += len;
1816         }
1817 #endif /* CONFIG_SME */
1818
1819         /* Process FT when SME is in the driver */
1820         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
1821             wpa_ft_is_completed(wpa_s->wpa)) {
1822                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1823                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1824                                                  data->assoc_info.resp_ies,
1825                                                  data->assoc_info.resp_ies_len,
1826                                                  bssid) < 0) {
1827                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1828                                 "Reassociation Response failed");
1829                         wpa_supplicant_deauthenticate(
1830                                 wpa_s, WLAN_REASON_INVALID_IE);
1831                         return -1;
1832                 }
1833                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Reassociation Response done");
1834         }
1835
1836         wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1837                              data->assoc_info.resp_ies_len);
1838 #endif /* CONFIG_IEEE80211R */
1839
1840         /* WPA/RSN IE from Beacon/ProbeResp */
1841         p = data->assoc_info.beacon_ies;
1842         l = data->assoc_info.beacon_ies_len;
1843
1844         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1845          */
1846         wpa_found = rsn_found = 0;
1847         while (p && l >= 2) {
1848                 len = p[1] + 2;
1849                 if (len > l) {
1850                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1851                                     p, l);
1852                         break;
1853                 }
1854                 if (!wpa_found &&
1855                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1856                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1857                         wpa_found = 1;
1858                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1859                 }
1860
1861                 if (!rsn_found &&
1862                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
1863                         rsn_found = 1;
1864                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1865                 }
1866
1867                 l -= len;
1868                 p += len;
1869         }
1870
1871         if (!wpa_found && data->assoc_info.beacon_ies)
1872                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1873         if (!rsn_found && data->assoc_info.beacon_ies)
1874                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1875         if (wpa_found || rsn_found)
1876                 wpa_s->ap_ies_from_associnfo = 1;
1877
1878         if (wpa_s->assoc_freq && data->assoc_info.freq &&
1879             wpa_s->assoc_freq != data->assoc_info.freq) {
1880                 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
1881                            "%u to %u MHz",
1882                            wpa_s->assoc_freq, data->assoc_info.freq);
1883                 wpa_supplicant_update_scan_results(wpa_s);
1884         }
1885
1886         wpa_s->assoc_freq = data->assoc_info.freq;
1887
1888         return 0;
1889 }
1890
1891
1892 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
1893 {
1894         const u8 *bss_wpa = NULL, *bss_rsn = NULL;
1895
1896         if (!wpa_s->current_bss || !wpa_s->current_ssid)
1897                 return -1;
1898
1899         if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
1900                 return 0;
1901
1902         bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
1903                                         WPA_IE_VENDOR_TYPE);
1904         bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
1905
1906         if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
1907                                  bss_wpa ? 2 + bss_wpa[1] : 0) ||
1908             wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
1909                                  bss_rsn ? 2 + bss_rsn[1] : 0))
1910                 return -1;
1911
1912         return 0;
1913 }
1914
1915
1916 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1917                                        union wpa_event_data *data)
1918 {
1919         u8 bssid[ETH_ALEN];
1920         int ft_completed;
1921
1922 #ifdef CONFIG_AP
1923         if (wpa_s->ap_iface) {
1924                 if (!data)
1925                         return;
1926                 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1927                                     data->assoc_info.addr,
1928                                     data->assoc_info.req_ies,
1929                                     data->assoc_info.req_ies_len,
1930                                     data->assoc_info.reassoc);
1931                 return;
1932         }
1933 #endif /* CONFIG_AP */
1934
1935         ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1936         if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1937                 return;
1938
1939         if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
1940                 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID");
1941                 wpa_supplicant_deauthenticate(
1942                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1943                 return;
1944         }
1945
1946         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1947         if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
1948                 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1949                         MACSTR, MAC2STR(bssid));
1950                 random_add_randomness(bssid, ETH_ALEN);
1951                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1952                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1953                 wpas_notify_bssid_changed(wpa_s);
1954
1955                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1956                         wpa_clear_keys(wpa_s, bssid);
1957                 }
1958                 if (wpa_supplicant_select_config(wpa_s) < 0) {
1959                         wpa_supplicant_deauthenticate(
1960                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1961                         return;
1962                 }
1963
1964                 if (wpa_s->conf->ap_scan == 1 &&
1965                     wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
1966                         if (wpa_supplicant_assoc_update_ie(wpa_s) < 0)
1967                                 wpa_msg(wpa_s, MSG_WARNING,
1968                                         "WPA/RSN IEs not updated");
1969                 }
1970         }
1971
1972 #ifdef CONFIG_SME
1973         os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1974         wpa_s->sme.prev_bssid_set = 1;
1975         wpa_s->sme.last_unprot_disconnect.sec = 0;
1976 #endif /* CONFIG_SME */
1977
1978         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1979         if (wpa_s->current_ssid) {
1980                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1981                  * initialized before association, but for other modes,
1982                  * initialize PC/SC here, if the current configuration needs
1983                  * smartcard or SIM/USIM. */
1984                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1985         }
1986         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1987         if (wpa_s->l2)
1988                 l2_packet_notify_auth_start(wpa_s->l2);
1989
1990         /*
1991          * Set portEnabled first to FALSE in order to get EAP state machine out
1992          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1993          * state machine may transit to AUTHENTICATING state based on obsolete
1994          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1995          * AUTHENTICATED without ever giving chance to EAP state machine to
1996          * reset the state.
1997          */
1998         if (!ft_completed) {
1999                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
2000                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
2001         }
2002         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
2003                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
2004         /* 802.1X::portControl = Auto */
2005         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
2006         wpa_s->eapol_received = 0;
2007         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2008             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
2009             (wpa_s->current_ssid &&
2010              wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
2011                 if (wpa_s->current_ssid &&
2012                     wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE &&
2013                     (wpa_s->drv_flags &
2014                      WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2015                         /*
2016                          * Set the key after having received joined-IBSS event
2017                          * from the driver.
2018                          */
2019                         wpa_supplicant_set_wpa_none_key(wpa_s,
2020                                                         wpa_s->current_ssid);
2021                 }
2022                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2023                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2024         } else if (!ft_completed) {
2025                 /* Timeout for receiving the first EAPOL packet */
2026                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
2027         }
2028         wpa_supplicant_cancel_scan(wpa_s);
2029
2030         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
2031             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
2032                 /*
2033                  * We are done; the driver will take care of RSN 4-way
2034                  * handshake.
2035                  */
2036                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2037                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2038                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2039                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2040         } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
2041                    wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
2042                 /*
2043                  * The driver will take care of RSN 4-way handshake, so we need
2044                  * to allow EAPOL supplicant to complete its work without
2045                  * waiting for WPA supplicant.
2046                  */
2047                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2048         } else if (ft_completed) {
2049                 /*
2050                  * FT protocol completed - make sure EAPOL state machine ends
2051                  * up in authenticated.
2052                  */
2053                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2054                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2055                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2056                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2057         }
2058
2059         wpa_s->last_eapol_matches_bssid = 0;
2060
2061         if (wpa_s->pending_eapol_rx) {
2062                 struct os_reltime now, age;
2063                 os_get_reltime(&now);
2064                 os_reltime_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
2065                 if (age.sec == 0 && age.usec < 100000 &&
2066                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
2067                     0) {
2068                         wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
2069                                 "frame that was received just before "
2070                                 "association notification");
2071                         wpa_supplicant_rx_eapol(
2072                                 wpa_s, wpa_s->pending_eapol_rx_src,
2073                                 wpabuf_head(wpa_s->pending_eapol_rx),
2074                                 wpabuf_len(wpa_s->pending_eapol_rx));
2075                 }
2076                 wpabuf_free(wpa_s->pending_eapol_rx);
2077                 wpa_s->pending_eapol_rx = NULL;
2078         }
2079
2080         if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2081              wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
2082             wpa_s->current_ssid &&
2083             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2084                 /* Set static WEP keys again */
2085                 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
2086         }
2087
2088 #ifdef CONFIG_IBSS_RSN
2089         if (wpa_s->current_ssid &&
2090             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
2091             wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
2092             wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
2093             wpa_s->ibss_rsn == NULL) {
2094                 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
2095                 if (!wpa_s->ibss_rsn) {
2096                         wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
2097                         wpa_supplicant_deauthenticate(
2098                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2099                         return;
2100                 }
2101
2102                 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
2103         }
2104 #endif /* CONFIG_IBSS_RSN */
2105
2106         wpas_wps_notify_assoc(wpa_s, bssid);
2107
2108         if (data) {
2109                 wmm_ac_notify_assoc(wpa_s, data->assoc_info.resp_ies,
2110                                     data->assoc_info.resp_ies_len,
2111                                     &data->assoc_info.wmm_params);
2112
2113                 if (wpa_s->reassoc_same_bss)
2114                         wmm_ac_restore_tspecs(wpa_s);
2115         }
2116 }
2117
2118
2119 static int disconnect_reason_recoverable(u16 reason_code)
2120 {
2121         return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
2122                 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
2123                 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
2124 }
2125
2126
2127 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
2128                                           u16 reason_code,
2129                                           int locally_generated)
2130 {
2131         const u8 *bssid;
2132
2133         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2134                 /*
2135                  * At least Host AP driver and a Prism3 card seemed to be
2136                  * generating streams of disconnected events when configuring
2137                  * IBSS for WPA-None. Ignore them for now.
2138                  */
2139                 return;
2140         }
2141
2142         bssid = wpa_s->bssid;
2143         if (is_zero_ether_addr(bssid))
2144                 bssid = wpa_s->pending_bssid;
2145
2146         if (!is_zero_ether_addr(bssid) ||
2147             wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2148                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
2149                         " reason=%d%s",
2150                         MAC2STR(bssid), reason_code,
2151                         locally_generated ? " locally_generated=1" : "");
2152         }
2153 }
2154
2155
2156 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code,
2157                                  int locally_generated)
2158 {
2159         if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE ||
2160             !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
2161                 return 0; /* Not in 4-way handshake with PSK */
2162
2163         /*
2164          * It looks like connection was lost while trying to go through PSK
2165          * 4-way handshake. Filter out known disconnection cases that are caused
2166          * by something else than PSK mismatch to avoid confusing reports.
2167          */
2168
2169         if (locally_generated) {
2170                 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS)
2171                         return 0;
2172         }
2173
2174         return 1;
2175 }
2176
2177
2178 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s,
2179                                                  u16 reason_code,
2180                                                  int locally_generated)
2181 {
2182         const u8 *bssid;
2183         int authenticating;
2184         u8 prev_pending_bssid[ETH_ALEN];
2185         struct wpa_bss *fast_reconnect = NULL;
2186         struct wpa_ssid *fast_reconnect_ssid = NULL;
2187         struct wpa_ssid *last_ssid;
2188
2189         authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
2190         os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
2191
2192         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2193                 /*
2194                  * At least Host AP driver and a Prism3 card seemed to be
2195                  * generating streams of disconnected events when configuring
2196                  * IBSS for WPA-None. Ignore them for now.
2197                  */
2198                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
2199                         "IBSS/WPA-None mode");
2200                 return;
2201         }
2202
2203         if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) {
2204                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
2205                         "pre-shared key may be incorrect");
2206                 if (wpas_p2p_4way_hs_failed(wpa_s) > 0)
2207                         return; /* P2P group removed */
2208                 wpas_auth_failed(wpa_s, "WRONG_KEY");
2209         }
2210         if (!wpa_s->disconnected &&
2211             (!wpa_s->auto_reconnect_disabled ||
2212              wpa_s->key_mgmt == WPA_KEY_MGMT_WPS ||
2213              wpas_wps_searching(wpa_s))) {
2214                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
2215                         "reconnect (wps=%d/%d wpa_state=%d)",
2216                         wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
2217                         wpas_wps_searching(wpa_s),
2218                         wpa_s->wpa_state);
2219                 if (wpa_s->wpa_state == WPA_COMPLETED &&
2220                     wpa_s->current_ssid &&
2221                     wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
2222                     !locally_generated &&
2223                     disconnect_reason_recoverable(reason_code)) {
2224                         /*
2225                          * It looks like the AP has dropped association with
2226                          * us, but could allow us to get back in. Try to
2227                          * reconnect to the same BSS without full scan to save
2228                          * time for some common cases.
2229                          */
2230                         fast_reconnect = wpa_s->current_bss;
2231                         fast_reconnect_ssid = wpa_s->current_ssid;
2232                 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
2233                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2234                 else
2235                         wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
2236                                 "immediate scan");
2237         } else {
2238                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
2239                         "try to re-connect");
2240                 wpa_s->reassociate = 0;
2241                 wpa_s->disconnected = 1;
2242                 wpa_supplicant_cancel_sched_scan(wpa_s);
2243         }
2244         bssid = wpa_s->bssid;
2245         if (is_zero_ether_addr(bssid))
2246                 bssid = wpa_s->pending_bssid;
2247         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2248                 wpas_connection_failed(wpa_s, bssid);
2249         wpa_sm_notify_disassoc(wpa_s->wpa);
2250         if (locally_generated)
2251                 wpa_s->disconnect_reason = -reason_code;
2252         else
2253                 wpa_s->disconnect_reason = reason_code;
2254         wpas_notify_disconnect_reason(wpa_s);
2255         if (wpa_supplicant_dynamic_keys(wpa_s)) {
2256                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
2257                 wpa_clear_keys(wpa_s, wpa_s->bssid);
2258         }
2259         last_ssid = wpa_s->current_ssid;
2260         wpa_supplicant_mark_disassoc(wpa_s);
2261
2262         if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
2263                 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
2264                 wpa_s->current_ssid = last_ssid;
2265         }
2266
2267         if (fast_reconnect &&
2268             !wpas_network_disabled(wpa_s, fast_reconnect_ssid) &&
2269             !disallowed_bssid(wpa_s, fast_reconnect->bssid) &&
2270             !disallowed_ssid(wpa_s, fast_reconnect->ssid,
2271                              fast_reconnect->ssid_len) &&
2272             !wpas_temp_disabled(wpa_s, fast_reconnect_ssid)) {
2273 #ifndef CONFIG_NO_SCAN_PROCESSING
2274                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
2275                 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
2276                                            fast_reconnect_ssid) < 0) {
2277                         /* Recover through full scan */
2278                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2279                 }
2280 #endif /* CONFIG_NO_SCAN_PROCESSING */
2281         } else if (fast_reconnect) {
2282                 /*
2283                  * Could not reconnect to the same BSS due to network being
2284                  * disabled. Use a new scan to match the alternative behavior
2285                  * above, i.e., to continue automatic reconnection attempt in a
2286                  * way that enforces disabled network rules.
2287                  */
2288                 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2289         }
2290 }
2291
2292
2293 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2294 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
2295 {
2296         struct wpa_supplicant *wpa_s = eloop_ctx;
2297
2298         if (!wpa_s->pending_mic_error_report)
2299                 return;
2300
2301         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
2302         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
2303         wpa_s->pending_mic_error_report = 0;
2304 }
2305 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2306
2307
2308 static void
2309 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
2310                                          union wpa_event_data *data)
2311 {
2312         int pairwise;
2313         struct os_reltime t;
2314
2315         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
2316         pairwise = (data && data->michael_mic_failure.unicast);
2317         os_get_reltime(&t);
2318         if ((wpa_s->last_michael_mic_error.sec &&
2319              !os_reltime_expired(&t, &wpa_s->last_michael_mic_error, 60)) ||
2320             wpa_s->pending_mic_error_report) {
2321                 if (wpa_s->pending_mic_error_report) {
2322                         /*
2323                          * Send the pending MIC error report immediately since
2324                          * we are going to start countermeasures and AP better
2325                          * do the same.
2326                          */
2327                         wpa_sm_key_request(wpa_s->wpa, 1,
2328                                            wpa_s->pending_mic_error_pairwise);
2329                 }
2330
2331                 /* Send the new MIC error report immediately since we are going
2332                  * to start countermeasures and AP better do the same.
2333                  */
2334                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2335
2336                 /* initialize countermeasures */
2337                 wpa_s->countermeasures = 1;
2338
2339                 wpa_blacklist_add(wpa_s, wpa_s->bssid);
2340
2341                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
2342
2343                 /*
2344                  * Need to wait for completion of request frame. We do not get
2345                  * any callback for the message completion, so just wait a
2346                  * short while and hope for the best. */
2347                 os_sleep(0, 10000);
2348
2349                 wpa_drv_set_countermeasures(wpa_s, 1);
2350                 wpa_supplicant_deauthenticate(wpa_s,
2351                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
2352                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
2353                                      wpa_s, NULL);
2354                 eloop_register_timeout(60, 0,
2355                                        wpa_supplicant_stop_countermeasures,
2356                                        wpa_s, NULL);
2357                 /* TODO: mark the AP rejected for 60 second. STA is
2358                  * allowed to associate with another AP.. */
2359         } else {
2360 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2361                 if (wpa_s->mic_errors_seen) {
2362                         /*
2363                          * Reduce the effectiveness of Michael MIC error
2364                          * reports as a means for attacking against TKIP if
2365                          * more than one MIC failure is noticed with the same
2366                          * PTK. We delay the transmission of the reports by a
2367                          * random time between 0 and 60 seconds in order to
2368                          * force the attacker wait 60 seconds before getting
2369                          * the information on whether a frame resulted in a MIC
2370                          * failure.
2371                          */
2372                         u8 rval[4];
2373                         int sec;
2374
2375                         if (os_get_random(rval, sizeof(rval)) < 0)
2376                                 sec = os_random() % 60;
2377                         else
2378                                 sec = WPA_GET_BE32(rval) % 60;
2379                         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
2380                                 "report %d seconds", sec);
2381                         wpa_s->pending_mic_error_report = 1;
2382                         wpa_s->pending_mic_error_pairwise = pairwise;
2383                         eloop_cancel_timeout(
2384                                 wpa_supplicant_delayed_mic_error_report,
2385                                 wpa_s, NULL);
2386                         eloop_register_timeout(
2387                                 sec, os_random() % 1000000,
2388                                 wpa_supplicant_delayed_mic_error_report,
2389                                 wpa_s, NULL);
2390                 } else {
2391                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2392                 }
2393 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2394                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2395 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2396         }
2397         wpa_s->last_michael_mic_error = t;
2398         wpa_s->mic_errors_seen++;
2399 }
2400
2401
2402 #ifdef CONFIG_TERMINATE_ONLASTIF
2403 static int any_interfaces(struct wpa_supplicant *head)
2404 {
2405         struct wpa_supplicant *wpa_s;
2406
2407         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
2408                 if (!wpa_s->interface_removed)
2409                         return 1;
2410         return 0;
2411 }
2412 #endif /* CONFIG_TERMINATE_ONLASTIF */
2413
2414
2415 static void
2416 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
2417                                       union wpa_event_data *data)
2418 {
2419         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
2420                 return;
2421
2422         switch (data->interface_status.ievent) {
2423         case EVENT_INTERFACE_ADDED:
2424                 if (!wpa_s->interface_removed)
2425                         break;
2426                 wpa_s->interface_removed = 0;
2427                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
2428                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
2429                         wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
2430                                 "driver after interface was added");
2431                 }
2432                 break;
2433         case EVENT_INTERFACE_REMOVED:
2434                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
2435                 wpa_s->interface_removed = 1;
2436                 wpa_supplicant_mark_disassoc(wpa_s);
2437                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2438                 l2_packet_deinit(wpa_s->l2);
2439                 wpa_s->l2 = NULL;
2440 #ifdef CONFIG_TERMINATE_ONLASTIF
2441                 /* check if last interface */
2442                 if (!any_interfaces(wpa_s->global->ifaces))
2443                         eloop_terminate();
2444 #endif /* CONFIG_TERMINATE_ONLASTIF */
2445                 break;
2446         }
2447 }
2448
2449
2450 #ifdef CONFIG_PEERKEY
2451 static void
2452 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
2453                               union wpa_event_data *data)
2454 {
2455         if (data == NULL)
2456                 return;
2457         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
2458 }
2459 #endif /* CONFIG_PEERKEY */
2460
2461
2462 #ifdef CONFIG_TDLS
2463 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
2464                                       union wpa_event_data *data)
2465 {
2466         if (data == NULL)
2467                 return;
2468         switch (data->tdls.oper) {
2469         case TDLS_REQUEST_SETUP:
2470                 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer);
2471                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2472                         wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
2473                 else
2474                         wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer);
2475                 break;
2476         case TDLS_REQUEST_TEARDOWN:
2477                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2478                         wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer,
2479                                                data->tdls.reason_code);
2480                 else
2481                         wpa_drv_tdls_oper(wpa_s, TDLS_TEARDOWN,
2482                                           data->tdls.peer);
2483                 break;
2484         }
2485 }
2486 #endif /* CONFIG_TDLS */
2487
2488
2489 #ifdef CONFIG_WNM
2490 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
2491                                      union wpa_event_data *data)
2492 {
2493         if (data == NULL)
2494                 return;
2495         switch (data->wnm.oper) {
2496         case WNM_OPER_SLEEP:
2497                 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
2498                            "(action=%d, intval=%d)",
2499                            data->wnm.sleep_action, data->wnm.sleep_intval);
2500                 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
2501                                              data->wnm.sleep_intval, NULL);
2502                 break;
2503         }
2504 }
2505 #endif /* CONFIG_WNM */
2506
2507
2508 #ifdef CONFIG_IEEE80211R
2509 static void
2510 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
2511                                  union wpa_event_data *data)
2512 {
2513         if (data == NULL)
2514                 return;
2515
2516         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
2517                                     data->ft_ies.ies_len,
2518                                     data->ft_ies.ft_action,
2519                                     data->ft_ies.target_ap,
2520                                     data->ft_ies.ric_ies,
2521                                     data->ft_ies.ric_ies_len) < 0) {
2522                 /* TODO: prevent MLME/driver from trying to associate? */
2523         }
2524 }
2525 #endif /* CONFIG_IEEE80211R */
2526
2527
2528 #ifdef CONFIG_IBSS_RSN
2529 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
2530                                                 union wpa_event_data *data)
2531 {
2532         struct wpa_ssid *ssid;
2533         if (wpa_s->wpa_state < WPA_ASSOCIATED)
2534                 return;
2535         if (data == NULL)
2536                 return;
2537         ssid = wpa_s->current_ssid;
2538         if (ssid == NULL)
2539                 return;
2540         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2541                 return;
2542
2543         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
2544 }
2545
2546
2547 static void wpa_supplicant_event_ibss_auth(struct wpa_supplicant *wpa_s,
2548                                            union wpa_event_data *data)
2549 {
2550         struct wpa_ssid *ssid = wpa_s->current_ssid;
2551
2552         if (ssid == NULL)
2553                 return;
2554
2555         /* check if the ssid is correctly configured as IBSS/RSN */
2556         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2557                 return;
2558
2559         ibss_rsn_handle_auth(wpa_s->ibss_rsn, data->rx_mgmt.frame,
2560                              data->rx_mgmt.frame_len);
2561 }
2562 #endif /* CONFIG_IBSS_RSN */
2563
2564
2565 #ifdef CONFIG_IEEE80211R
2566 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
2567                          size_t len)
2568 {
2569         const u8 *sta_addr, *target_ap_addr;
2570         u16 status;
2571
2572         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
2573         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
2574                 return; /* only SME case supported for now */
2575         if (len < 1 + 2 * ETH_ALEN + 2)
2576                 return;
2577         if (data[0] != 2)
2578                 return; /* Only FT Action Response is supported for now */
2579         sta_addr = data + 1;
2580         target_ap_addr = data + 1 + ETH_ALEN;
2581         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
2582         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
2583                 MACSTR " TargetAP " MACSTR " status %u",
2584                 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
2585
2586         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
2587                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
2588                         " in FT Action Response", MAC2STR(sta_addr));
2589                 return;
2590         }
2591
2592         if (status) {
2593                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
2594                         "failure (status code %d)", status);
2595                 /* TODO: report error to FT code(?) */
2596                 return;
2597         }
2598
2599         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
2600                                     len - (1 + 2 * ETH_ALEN + 2), 1,
2601                                     target_ap_addr, NULL, 0) < 0)
2602                 return;
2603
2604 #ifdef CONFIG_SME
2605         {
2606                 struct wpa_bss *bss;
2607                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
2608                 if (bss)
2609                         wpa_s->sme.freq = bss->freq;
2610                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
2611                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
2612                               WLAN_AUTH_FT);
2613         }
2614 #endif /* CONFIG_SME */
2615 }
2616 #endif /* CONFIG_IEEE80211R */
2617
2618
2619 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
2620                                                struct unprot_deauth *e)
2621 {
2622 #ifdef CONFIG_IEEE80211W
2623         wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
2624                    "dropped: " MACSTR " -> " MACSTR
2625                    " (reason code %u)",
2626                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2627         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2628 #endif /* CONFIG_IEEE80211W */
2629 }
2630
2631
2632 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
2633                                                  struct unprot_disassoc *e)
2634 {
2635 #ifdef CONFIG_IEEE80211W
2636         wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
2637                    "dropped: " MACSTR " -> " MACSTR
2638                    " (reason code %u)",
2639                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2640         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2641 #endif /* CONFIG_IEEE80211W */
2642 }
2643
2644
2645 static void wpas_event_disconnect(struct wpa_supplicant *wpa_s, const u8 *addr,
2646                                   u16 reason_code, int locally_generated,
2647                                   const u8 *ie, size_t ie_len, int deauth)
2648 {
2649 #ifdef CONFIG_AP
2650         if (wpa_s->ap_iface && addr) {
2651                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], addr);
2652                 return;
2653         }
2654
2655         if (wpa_s->ap_iface) {
2656                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in AP mode");
2657                 return;
2658         }
2659 #endif /* CONFIG_AP */
2660
2661         wpa_supplicant_event_disassoc(wpa_s, reason_code, locally_generated);
2662
2663         if (((reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
2664               ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
2665                 (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
2666                eapol_sm_failed(wpa_s->eapol))) &&
2667              !wpa_s->eap_expected_failure))
2668                 wpas_auth_failed(wpa_s, "AUTH_FAILED");
2669
2670 #ifdef CONFIG_P2P
2671         if (deauth && reason_code > 0) {
2672                 if (wpas_p2p_deauth_notif(wpa_s, addr, reason_code, ie, ie_len,
2673                                           locally_generated) > 0) {
2674                         /*
2675                          * The interface was removed, so cannot continue
2676                          * processing any additional operations after this.
2677                          */
2678                         return;
2679                 }
2680         }
2681 #endif /* CONFIG_P2P */
2682
2683         wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
2684                                              locally_generated);
2685 }
2686
2687
2688 static void wpas_event_disassoc(struct wpa_supplicant *wpa_s,
2689                                 struct disassoc_info *info)
2690 {
2691         u16 reason_code = 0;
2692         int locally_generated = 0;
2693         const u8 *addr = NULL;
2694         const u8 *ie = NULL;
2695         size_t ie_len = 0;
2696
2697         wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
2698
2699         if (info) {
2700                 addr = info->addr;
2701                 ie = info->ie;
2702                 ie_len = info->ie_len;
2703                 reason_code = info->reason_code;
2704                 locally_generated = info->locally_generated;
2705                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", reason_code,
2706                         locally_generated ? " (locally generated)" : "");
2707                 if (addr)
2708                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2709                                 MAC2STR(addr));
2710                 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
2711                             ie, ie_len);
2712         }
2713
2714 #ifdef CONFIG_AP
2715         if (wpa_s->ap_iface && info && info->addr) {
2716                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], info->addr);
2717                 return;
2718         }
2719
2720         if (wpa_s->ap_iface) {
2721                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in AP mode");
2722                 return;
2723         }
2724 #endif /* CONFIG_AP */
2725
2726 #ifdef CONFIG_P2P
2727         if (info) {
2728                 wpas_p2p_disassoc_notif(
2729                         wpa_s, info->addr, reason_code, info->ie, info->ie_len,
2730                         locally_generated);
2731         }
2732 #endif /* CONFIG_P2P */
2733
2734         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2735                 sme_event_disassoc(wpa_s, info);
2736
2737         wpas_event_disconnect(wpa_s, addr, reason_code, locally_generated,
2738                               ie, ie_len, 0);
2739 }
2740
2741
2742 static void wpas_event_deauth(struct wpa_supplicant *wpa_s,
2743                               struct deauth_info *info)
2744 {
2745         u16 reason_code = 0;
2746         int locally_generated = 0;
2747         const u8 *addr = NULL;
2748         const u8 *ie = NULL;
2749         size_t ie_len = 0;
2750
2751         wpa_dbg(wpa_s, MSG_DEBUG, "Deauthentication notification");
2752
2753         if (info) {
2754                 addr = info->addr;
2755                 ie = info->ie;
2756                 ie_len = info->ie_len;
2757                 reason_code = info->reason_code;
2758                 locally_generated = info->locally_generated;
2759                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2760                         reason_code,
2761                         locally_generated ? " (locally generated)" : "");
2762                 if (addr) {
2763                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2764                                 MAC2STR(addr));
2765                 }
2766                 wpa_hexdump(MSG_DEBUG, "Deauthentication frame IE(s)",
2767                             ie, ie_len);
2768         }
2769
2770         wpa_reset_ft_completed(wpa_s->wpa);
2771
2772         wpas_event_disconnect(wpa_s, addr, reason_code,
2773                               locally_generated, ie, ie_len, 1);
2774 }
2775
2776
2777 static const char * reg_init_str(enum reg_change_initiator init)
2778 {
2779         switch (init) {
2780         case REGDOM_SET_BY_CORE:
2781                 return "CORE";
2782         case REGDOM_SET_BY_USER:
2783                 return "USER";
2784         case REGDOM_SET_BY_DRIVER:
2785                 return "DRIVER";
2786         case REGDOM_SET_BY_COUNTRY_IE:
2787                 return "COUNTRY_IE";
2788         case REGDOM_BEACON_HINT:
2789                 return "BEACON_HINT";
2790         }
2791         return "?";
2792 }
2793
2794
2795 static const char * reg_type_str(enum reg_type type)
2796 {
2797         switch (type) {
2798         case REGDOM_TYPE_UNKNOWN:
2799                 return "UNKNOWN";
2800         case REGDOM_TYPE_COUNTRY:
2801                 return "COUNTRY";
2802         case REGDOM_TYPE_WORLD:
2803                 return "WORLD";
2804         case REGDOM_TYPE_CUSTOM_WORLD:
2805                 return "CUSTOM_WORLD";
2806         case REGDOM_TYPE_INTERSECTION:
2807                 return "INTERSECTION";
2808         }
2809         return "?";
2810 }
2811
2812
2813 static void wpa_supplicant_update_channel_list(
2814         struct wpa_supplicant *wpa_s, struct channel_list_changed *info)
2815 {
2816         struct wpa_supplicant *ifs;
2817
2818         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_REGDOM_CHANGE "init=%s type=%s%s%s",
2819                 reg_init_str(info->initiator), reg_type_str(info->type),
2820                 info->alpha2[0] ? " alpha2=" : "",
2821                 info->alpha2[0] ? info->alpha2 : "");
2822
2823         if (wpa_s->drv_priv == NULL)
2824                 return; /* Ignore event during drv initialization */
2825
2826         free_hw_features(wpa_s);
2827         wpa_s->hw.modes = wpa_drv_get_hw_feature_data(
2828                 wpa_s, &wpa_s->hw.num_modes, &wpa_s->hw.flags);
2829
2830         wpas_p2p_update_channel_list(wpa_s);
2831
2832         /*
2833          * Check other interfaces to see if they share the same radio. If
2834          * so, they get updated with this same hw mode info.
2835          */
2836         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
2837                          radio_list) {
2838                 if (ifs != wpa_s) {
2839                         wpa_printf(MSG_DEBUG, "%s: Updating hw mode",
2840                                    ifs->ifname);
2841                         free_hw_features(ifs);
2842                         ifs->hw.modes = wpa_drv_get_hw_feature_data(
2843                                 ifs, &ifs->hw.num_modes, &ifs->hw.flags);
2844                 }
2845         }
2846 }
2847
2848
2849 static void wpas_event_rx_mgmt_action(struct wpa_supplicant *wpa_s,
2850                                       const u8 *frame, size_t len, int freq,
2851                                       int rssi)
2852 {
2853         const struct ieee80211_mgmt *mgmt;
2854         const u8 *payload;
2855         size_t plen;
2856         u8 category;
2857
2858         if (len < IEEE80211_HDRLEN + 2)
2859                 return;
2860
2861         mgmt = (const struct ieee80211_mgmt *) frame;
2862         payload = frame + IEEE80211_HDRLEN;
2863         category = *payload++;
2864         plen = len - IEEE80211_HDRLEN - 1;
2865
2866         wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
2867                 " Category=%u DataLen=%d freq=%d MHz",
2868                 MAC2STR(mgmt->sa), category, (int) plen, freq);
2869
2870         if (category == WLAN_ACTION_WMM) {
2871                 wmm_ac_rx_action(wpa_s, mgmt->da, mgmt->sa, payload, plen);
2872                 return;
2873         }
2874
2875 #ifdef CONFIG_IEEE80211R
2876         if (category == WLAN_ACTION_FT) {
2877                 ft_rx_action(wpa_s, payload, plen);
2878                 return;
2879         }
2880 #endif /* CONFIG_IEEE80211R */
2881
2882 #ifdef CONFIG_IEEE80211W
2883 #ifdef CONFIG_SME
2884         if (category == WLAN_ACTION_SA_QUERY) {
2885                 sme_sa_query_rx(wpa_s, mgmt->sa, payload, plen);
2886                 return;
2887         }
2888 #endif /* CONFIG_SME */
2889 #endif /* CONFIG_IEEE80211W */
2890
2891 #ifdef CONFIG_WNM
2892         if (mgmt->u.action.category == WLAN_ACTION_WNM) {
2893                 ieee802_11_rx_wnm_action(wpa_s, mgmt, len);
2894                 return;
2895         }
2896 #endif /* CONFIG_WNM */
2897
2898 #ifdef CONFIG_GAS
2899         if ((mgmt->u.action.category == WLAN_ACTION_PUBLIC ||
2900              mgmt->u.action.category == WLAN_ACTION_PROTECTED_DUAL) &&
2901             gas_query_rx(wpa_s->gas, mgmt->da, mgmt->sa, mgmt->bssid,
2902                          mgmt->u.action.category,
2903                          payload, plen, freq) == 0)
2904                 return;
2905 #endif /* CONFIG_GAS */
2906
2907 #ifdef CONFIG_TDLS
2908         if (category == WLAN_ACTION_PUBLIC && plen >= 4 &&
2909             payload[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
2910                 wpa_dbg(wpa_s, MSG_DEBUG,
2911                         "TDLS: Received Discovery Response from " MACSTR,
2912                         MAC2STR(mgmt->sa));
2913                 return;
2914         }
2915 #endif /* CONFIG_TDLS */
2916
2917 #ifdef CONFIG_INTERWORKING
2918         if (category == WLAN_ACTION_QOS && plen >= 1 &&
2919             payload[0] == QOS_QOS_MAP_CONFIG) {
2920                 const u8 *pos = payload + 1;
2921                 size_t qlen = plen - 1;
2922                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: Received QoS Map Configure frame from "
2923                         MACSTR, MAC2STR(mgmt->sa));
2924                 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) == 0 &&
2925                     qlen > 2 && pos[0] == WLAN_EID_QOS_MAP_SET &&
2926                     pos[1] <= qlen - 2 && pos[1] >= 16)
2927                         wpas_qos_map_set(wpa_s, pos + 2, pos[1]);
2928                 return;
2929         }
2930 #endif /* CONFIG_INTERWORKING */
2931
2932         if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
2933             payload[0] == WLAN_RRM_NEIGHBOR_REPORT_RESPONSE) {
2934                 wpas_rrm_process_neighbor_rep(wpa_s, payload + 1, plen - 1);
2935                 return;
2936         }
2937
2938         if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
2939             payload[0] == WLAN_RRM_LINK_MEASUREMENT_REQUEST) {
2940                 wpas_rrm_handle_link_measurement_request(wpa_s, mgmt->sa,
2941                                                          payload + 1, plen - 1,
2942                                                          rssi);
2943                 return;
2944         }
2945
2946         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
2947                            category, payload, plen, freq);
2948         if (wpa_s->ifmsh)
2949                 mesh_mpm_action_rx(wpa_s, mgmt, len);
2950 }
2951
2952
2953 static void wpa_supplicant_notify_avoid_freq(struct wpa_supplicant *wpa_s,
2954                                              union wpa_event_data *event)
2955 {
2956 #ifdef CONFIG_P2P
2957         struct wpa_supplicant *ifs;
2958 #endif /* CONFIG_P2P */
2959         struct wpa_freq_range_list *list;
2960         char *str = NULL;
2961
2962         list = &event->freq_range;
2963
2964         if (list->num)
2965                 str = freq_range_list_str(list);
2966         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AVOID_FREQ "ranges=%s",
2967                 str ? str : "");
2968
2969 #ifdef CONFIG_P2P
2970         if (freq_range_list_parse(&wpa_s->global->p2p_go_avoid_freq, str)) {
2971                 wpa_dbg(wpa_s, MSG_ERROR, "%s: Failed to parse freq range",
2972                         __func__);
2973         } else {
2974                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Update channel list based on frequency avoid event");
2975                 wpas_p2p_update_channel_list(wpa_s);
2976         }
2977
2978         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
2979                 int freq;
2980                 if (!ifs->current_ssid ||
2981                     !ifs->current_ssid->p2p_group ||
2982                     (ifs->current_ssid->mode != WPAS_MODE_P2P_GO &&
2983                      ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION))
2984                         continue;
2985
2986                 freq = ifs->current_ssid->frequency;
2987                 if (!freq_range_list_includes(list, freq)) {
2988                         wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating frequency %d MHz in safe range",
2989                                 freq);
2990                         continue;
2991                 }
2992
2993                 wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating in unsafe frequency %d MHz",
2994                         freq);
2995                 /* TODO: Consider using CSA or removing the group within
2996                  * wpa_supplicant */
2997                 wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
2998         }
2999 #endif /* CONFIG_P2P */
3000
3001         os_free(str);
3002 }
3003
3004
3005 static void wpa_supplicant_event_assoc_auth(struct wpa_supplicant *wpa_s,
3006                                             union wpa_event_data *data)
3007 {
3008         wpa_dbg(wpa_s, MSG_DEBUG,
3009                 "Connection authorized by device, previous state %d",
3010                 wpa_s->wpa_state);
3011         if (wpa_s->wpa_state == WPA_ASSOCIATED) {
3012                 wpa_supplicant_cancel_auth_timeout(wpa_s);
3013                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
3014                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
3015                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
3016         }
3017         wpa_sm_set_rx_replay_ctr(wpa_s->wpa, data->assoc_info.key_replay_ctr);
3018         wpa_sm_set_ptk_kck_kek(wpa_s->wpa, data->assoc_info.ptk_kck,
3019                                data->assoc_info.ptk_kck_len,
3020                                data->assoc_info.ptk_kek,
3021                                data->assoc_info.ptk_kek_len);
3022 }
3023
3024
3025 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
3026                           union wpa_event_data *data)
3027 {
3028         struct wpa_supplicant *wpa_s = ctx;
3029
3030         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
3031             event != EVENT_INTERFACE_ENABLED &&
3032             event != EVENT_INTERFACE_STATUS &&
3033             event != EVENT_SCHED_SCAN_STOPPED) {
3034                 wpa_dbg(wpa_s, MSG_DEBUG,
3035                         "Ignore event %s (%d) while interface is disabled",
3036                         event_to_string(event), event);
3037                 return;
3038         }
3039
3040 #ifndef CONFIG_NO_STDOUT_DEBUG
3041 {
3042         int level = MSG_DEBUG;
3043
3044         if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
3045                 const struct ieee80211_hdr *hdr;
3046                 u16 fc;
3047                 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
3048                 fc = le_to_host16(hdr->frame_control);
3049                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
3050                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
3051                         level = MSG_EXCESSIVE;
3052         }
3053
3054         wpa_dbg(wpa_s, level, "Event %s (%d) received",
3055                 event_to_string(event), event);
3056 }
3057 #endif /* CONFIG_NO_STDOUT_DEBUG */
3058
3059         switch (event) {
3060         case EVENT_AUTH:
3061                 sme_event_auth(wpa_s, data);
3062                 break;
3063         case EVENT_ASSOC:
3064                 wpa_supplicant_event_assoc(wpa_s, data);
3065                 if (data && data->assoc_info.authorized)
3066                         wpa_supplicant_event_assoc_auth(wpa_s, data);
3067                 break;
3068         case EVENT_DISASSOC:
3069                 wpas_event_disassoc(wpa_s,
3070                                     data ? &data->disassoc_info : NULL);
3071                 break;
3072         case EVENT_DEAUTH:
3073                 wpas_event_deauth(wpa_s,
3074                                   data ? &data->deauth_info : NULL);
3075                 break;
3076         case EVENT_MICHAEL_MIC_FAILURE:
3077                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
3078                 break;
3079 #ifndef CONFIG_NO_SCAN_PROCESSING
3080         case EVENT_SCAN_STARTED:
3081                 os_get_reltime(&wpa_s->scan_start_time);
3082                 if (wpa_s->own_scan_requested) {
3083                         struct os_reltime diff;
3084
3085                         os_reltime_sub(&wpa_s->scan_start_time,
3086                                        &wpa_s->scan_trigger_time, &diff);
3087                         wpa_dbg(wpa_s, MSG_DEBUG, "Own scan request started a scan in %ld.%06ld seconds",
3088                                 diff.sec, diff.usec);
3089                         wpa_s->own_scan_requested = 0;
3090                         wpa_s->own_scan_running = 1;
3091                         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
3092                             wpa_s->manual_scan_use_id) {
3093                                 wpa_msg_ctrl(wpa_s, MSG_INFO,
3094                                              WPA_EVENT_SCAN_STARTED "id=%u",
3095                                              wpa_s->manual_scan_id);
3096                         } else {
3097                                 wpa_msg_ctrl(wpa_s, MSG_INFO,
3098                                              WPA_EVENT_SCAN_STARTED);
3099                         }
3100                 } else {
3101                         wpa_dbg(wpa_s, MSG_DEBUG, "External program started a scan");
3102                         wpa_s->radio->external_scan_running = 1;
3103                         wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
3104                 }
3105                 break;
3106         case EVENT_SCAN_RESULTS:
3107                 if (os_reltime_initialized(&wpa_s->scan_start_time)) {
3108                         struct os_reltime now, diff;
3109                         os_get_reltime(&now);
3110                         os_reltime_sub(&now, &wpa_s->scan_start_time, &diff);
3111                         wpa_s->scan_start_time.sec = 0;
3112                         wpa_s->scan_start_time.usec = 0;
3113                         wpa_dbg(wpa_s, MSG_DEBUG, "Scan completed in %ld.%06ld seconds",
3114                                 diff.sec, diff.usec);
3115                 }
3116                 if (wpa_supplicant_event_scan_results(wpa_s, data))
3117                         break; /* interface may have been removed */
3118                 wpa_s->own_scan_running = 0;
3119                 wpa_s->radio->external_scan_running = 0;
3120                 radio_work_check_next(wpa_s);
3121                 break;
3122 #endif /* CONFIG_NO_SCAN_PROCESSING */
3123         case EVENT_ASSOCINFO:
3124                 wpa_supplicant_event_associnfo(wpa_s, data);
3125                 break;
3126         case EVENT_INTERFACE_STATUS:
3127                 wpa_supplicant_event_interface_status(wpa_s, data);
3128                 break;
3129         case EVENT_PMKID_CANDIDATE:
3130                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
3131                 break;
3132 #ifdef CONFIG_PEERKEY
3133         case EVENT_STKSTART:
3134                 wpa_supplicant_event_stkstart(wpa_s, data);
3135                 break;
3136 #endif /* CONFIG_PEERKEY */
3137 #ifdef CONFIG_TDLS
3138         case EVENT_TDLS:
3139                 wpa_supplicant_event_tdls(wpa_s, data);
3140                 break;
3141 #endif /* CONFIG_TDLS */
3142 #ifdef CONFIG_WNM
3143         case EVENT_WNM:
3144                 wpa_supplicant_event_wnm(wpa_s, data);
3145                 break;
3146 #endif /* CONFIG_WNM */
3147 #ifdef CONFIG_IEEE80211R
3148         case EVENT_FT_RESPONSE:
3149                 wpa_supplicant_event_ft_response(wpa_s, data);
3150                 break;
3151 #endif /* CONFIG_IEEE80211R */
3152 #ifdef CONFIG_IBSS_RSN
3153         case EVENT_IBSS_RSN_START:
3154                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
3155                 break;
3156 #endif /* CONFIG_IBSS_RSN */
3157         case EVENT_ASSOC_REJECT:
3158                 if (data->assoc_reject.bssid)
3159                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3160                                 "bssid=" MACSTR " status_code=%u",
3161                                 MAC2STR(data->assoc_reject.bssid),
3162                                 data->assoc_reject.status_code);
3163                 else
3164                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3165                                 "status_code=%u",
3166                                 data->assoc_reject.status_code);
3167                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3168                         sme_event_assoc_reject(wpa_s, data);
3169                 else {
3170                         const u8 *bssid = data->assoc_reject.bssid;
3171                         if (bssid == NULL || is_zero_ether_addr(bssid))
3172                                 bssid = wpa_s->pending_bssid;
3173                         wpas_connection_failed(wpa_s, bssid);
3174                         wpa_supplicant_mark_disassoc(wpa_s);
3175                 }
3176                 break;
3177         case EVENT_AUTH_TIMED_OUT:
3178                 /* It is possible to get this event from earlier connection */
3179                 if (wpa_s->current_ssid &&
3180                     wpa_s->current_ssid->mode == WPAS_MODE_MESH) {
3181                         wpa_dbg(wpa_s, MSG_DEBUG,
3182                                 "Ignore AUTH_TIMED_OUT in mesh configuration");
3183                         break;
3184                 }
3185                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3186                         sme_event_auth_timed_out(wpa_s, data);
3187                 break;
3188         case EVENT_ASSOC_TIMED_OUT:
3189                 /* It is possible to get this event from earlier connection */
3190                 if (wpa_s->current_ssid &&
3191                     wpa_s->current_ssid->mode == WPAS_MODE_MESH) {
3192                         wpa_dbg(wpa_s, MSG_DEBUG,
3193                                 "Ignore ASSOC_TIMED_OUT in mesh configuration");
3194                         break;
3195                 }
3196                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3197                         sme_event_assoc_timed_out(wpa_s, data);
3198                 break;
3199         case EVENT_TX_STATUS:
3200                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
3201                         " type=%d stype=%d",
3202                         MAC2STR(data->tx_status.dst),
3203                         data->tx_status.type, data->tx_status.stype);
3204 #ifdef CONFIG_AP
3205                 if (wpa_s->ap_iface == NULL) {
3206 #ifdef CONFIG_OFFCHANNEL
3207                         if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3208                             data->tx_status.stype == WLAN_FC_STYPE_ACTION)
3209                                 offchannel_send_action_tx_status(
3210                                         wpa_s, data->tx_status.dst,
3211                                         data->tx_status.data,
3212                                         data->tx_status.data_len,
3213                                         data->tx_status.ack ?
3214                                         OFFCHANNEL_SEND_ACTION_SUCCESS :
3215                                         OFFCHANNEL_SEND_ACTION_NO_ACK);
3216 #endif /* CONFIG_OFFCHANNEL */
3217                         break;
3218                 }
3219 #endif /* CONFIG_AP */
3220 #ifdef CONFIG_OFFCHANNEL
3221                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
3222                         MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
3223                 /*
3224                  * Catch TX status events for Action frames we sent via group
3225                  * interface in GO mode.
3226                  */
3227                 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3228                     data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
3229                     os_memcmp(wpa_s->parent->pending_action_dst,
3230                               data->tx_status.dst, ETH_ALEN) == 0) {
3231                         offchannel_send_action_tx_status(
3232                                 wpa_s->parent, data->tx_status.dst,
3233                                 data->tx_status.data,
3234                                 data->tx_status.data_len,
3235                                 data->tx_status.ack ?
3236                                 OFFCHANNEL_SEND_ACTION_SUCCESS :
3237                                 OFFCHANNEL_SEND_ACTION_NO_ACK);
3238                         break;
3239                 }
3240 #endif /* CONFIG_OFFCHANNEL */
3241 #ifdef CONFIG_AP
3242                 switch (data->tx_status.type) {
3243                 case WLAN_FC_TYPE_MGMT:
3244                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
3245                                       data->tx_status.data_len,
3246                                       data->tx_status.stype,
3247                                       data->tx_status.ack);
3248                         break;
3249                 case WLAN_FC_TYPE_DATA:
3250                         ap_tx_status(wpa_s, data->tx_status.dst,
3251                                      data->tx_status.data,
3252                                      data->tx_status.data_len,
3253                                      data->tx_status.ack);
3254                         break;
3255                 }
3256 #endif /* CONFIG_AP */
3257                 break;
3258 #ifdef CONFIG_AP
3259         case EVENT_EAPOL_TX_STATUS:
3260                 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
3261                                    data->eapol_tx_status.data,
3262                                    data->eapol_tx_status.data_len,
3263                                    data->eapol_tx_status.ack);
3264                 break;
3265         case EVENT_DRIVER_CLIENT_POLL_OK:
3266                 ap_client_poll_ok(wpa_s, data->client_poll.addr);
3267                 break;
3268         case EVENT_RX_FROM_UNKNOWN:
3269                 if (wpa_s->ap_iface == NULL)
3270                         break;
3271                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
3272                                        data->rx_from_unknown.wds);
3273                 break;
3274         case EVENT_CH_SWITCH:
3275                 if (!data)
3276                         break;
3277                 if (!wpa_s->ap_iface) {
3278                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: Ignore channel switch "
3279                                 "event in non-AP mode");
3280                         break;
3281                 }
3282
3283                 wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
3284                                   data->ch_switch.ht_enabled,
3285                                   data->ch_switch.ch_offset,
3286                                   data->ch_switch.ch_width,
3287                                   data->ch_switch.cf1,
3288                                   data->ch_switch.cf2);
3289                 break;
3290 #endif /* CONFIG_AP */
3291         case EVENT_RX_MGMT: {
3292                 u16 fc, stype;
3293                 const struct ieee80211_mgmt *mgmt;
3294
3295 #ifdef CONFIG_TESTING_OPTIONS
3296                 if (wpa_s->ext_mgmt_frame_handling) {
3297                         struct rx_mgmt *rx = &data->rx_mgmt;
3298                         size_t hex_len = 2 * rx->frame_len + 1;
3299                         char *hex = os_malloc(hex_len);
3300                         if (hex) {
3301                                 wpa_snprintf_hex(hex, hex_len,
3302                                                  rx->frame, rx->frame_len);
3303                                 wpa_msg(wpa_s, MSG_INFO, "MGMT-RX freq=%d datarate=%u ssi_signal=%d %s",
3304                                         rx->freq, rx->datarate, rx->ssi_signal,
3305                                         hex);
3306                                 os_free(hex);
3307                         }
3308                         break;
3309                 }
3310 #endif /* CONFIG_TESTING_OPTIONS */
3311
3312                 mgmt = (const struct ieee80211_mgmt *)
3313                         data->rx_mgmt.frame;
3314                 fc = le_to_host16(mgmt->frame_control);
3315                 stype = WLAN_FC_GET_STYPE(fc);
3316
3317 #ifdef CONFIG_AP
3318                 if (wpa_s->ap_iface == NULL) {
3319 #endif /* CONFIG_AP */
3320 #ifdef CONFIG_P2P
3321                         if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3322                             data->rx_mgmt.frame_len > 24) {
3323                                 const u8 *src = mgmt->sa;
3324                                 const u8 *ie = mgmt->u.probe_req.variable;
3325                                 size_t ie_len = data->rx_mgmt.frame_len -
3326                                         (mgmt->u.probe_req.variable -
3327                                          data->rx_mgmt.frame);
3328                                 wpas_p2p_probe_req_rx(
3329                                         wpa_s, src, mgmt->da,
3330                                         mgmt->bssid, ie, ie_len,
3331                                         data->rx_mgmt.ssi_signal);
3332                                 break;
3333                         }
3334 #endif /* CONFIG_P2P */
3335 #ifdef CONFIG_IBSS_RSN
3336                         if (wpa_s->current_ssid &&
3337                             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
3338                             stype == WLAN_FC_STYPE_AUTH &&
3339                             data->rx_mgmt.frame_len >= 30) {
3340                                 wpa_supplicant_event_ibss_auth(wpa_s, data);
3341                                 break;
3342                         }
3343 #endif /* CONFIG_IBSS_RSN */
3344
3345                         if (stype == WLAN_FC_STYPE_ACTION) {
3346                                 wpas_event_rx_mgmt_action(
3347                                         wpa_s, data->rx_mgmt.frame,
3348                                         data->rx_mgmt.frame_len,
3349                                         data->rx_mgmt.freq,
3350                                         data->rx_mgmt.ssi_signal);
3351                                 break;
3352                         }
3353
3354                         if (wpa_s->ifmsh) {
3355                                 mesh_mpm_mgmt_rx(wpa_s, &data->rx_mgmt);
3356                                 break;
3357                         }
3358
3359                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
3360                                 "management frame in non-AP mode");
3361                         break;
3362 #ifdef CONFIG_AP
3363                 }
3364
3365                 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3366                     data->rx_mgmt.frame_len > 24) {
3367                         const u8 *ie = mgmt->u.probe_req.variable;
3368                         size_t ie_len = data->rx_mgmt.frame_len -
3369                                 (mgmt->u.probe_req.variable -
3370                                  data->rx_mgmt.frame);
3371
3372                         wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
3373                                          mgmt->bssid, ie, ie_len,
3374                                          data->rx_mgmt.ssi_signal);
3375                 }
3376
3377                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
3378 #endif /* CONFIG_AP */
3379                 break;
3380                 }
3381         case EVENT_RX_PROBE_REQ:
3382                 if (data->rx_probe_req.sa == NULL ||
3383                     data->rx_probe_req.ie == NULL)
3384                         break;
3385 #ifdef CONFIG_AP
3386                 if (wpa_s->ap_iface) {
3387                         hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
3388                                              data->rx_probe_req.sa,
3389                                              data->rx_probe_req.da,
3390                                              data->rx_probe_req.bssid,
3391                                              data->rx_probe_req.ie,
3392                                              data->rx_probe_req.ie_len,
3393                                              data->rx_probe_req.ssi_signal);
3394                         break;
3395                 }
3396 #endif /* CONFIG_AP */
3397                 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
3398                                       data->rx_probe_req.da,
3399                                       data->rx_probe_req.bssid,
3400                                       data->rx_probe_req.ie,
3401                                       data->rx_probe_req.ie_len,
3402                                       data->rx_probe_req.ssi_signal);
3403                 break;
3404         case EVENT_REMAIN_ON_CHANNEL:
3405 #ifdef CONFIG_OFFCHANNEL
3406                 offchannel_remain_on_channel_cb(
3407                         wpa_s, data->remain_on_channel.freq,
3408                         data->remain_on_channel.duration);
3409 #endif /* CONFIG_OFFCHANNEL */
3410                 wpas_p2p_remain_on_channel_cb(
3411                         wpa_s, data->remain_on_channel.freq,
3412                         data->remain_on_channel.duration);
3413                 break;
3414         case EVENT_CANCEL_REMAIN_ON_CHANNEL:
3415 #ifdef CONFIG_OFFCHANNEL
3416                 offchannel_cancel_remain_on_channel_cb(
3417                         wpa_s, data->remain_on_channel.freq);
3418 #endif /* CONFIG_OFFCHANNEL */
3419                 wpas_p2p_cancel_remain_on_channel_cb(
3420                         wpa_s, data->remain_on_channel.freq);
3421                 break;
3422         case EVENT_EAPOL_RX:
3423                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
3424                                         data->eapol_rx.data,
3425                                         data->eapol_rx.data_len);
3426                 break;
3427         case EVENT_SIGNAL_CHANGE:
3428                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SIGNAL_CHANGE
3429                         "above=%d signal=%d noise=%d txrate=%d",
3430                         data->signal_change.above_threshold,
3431                         data->signal_change.current_signal,
3432                         data->signal_change.current_noise,
3433                         data->signal_change.current_txrate);
3434                 bgscan_notify_signal_change(
3435                         wpa_s, data->signal_change.above_threshold,
3436                         data->signal_change.current_signal,
3437                         data->signal_change.current_noise,
3438                         data->signal_change.current_txrate);
3439                 break;
3440         case EVENT_INTERFACE_ENABLED:
3441                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
3442                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
3443                         wpa_supplicant_update_mac_addr(wpa_s);
3444                         if (wpa_s->p2p_mgmt) {
3445                                 wpa_supplicant_set_state(wpa_s,
3446                                                          WPA_DISCONNECTED);
3447                                 break;
3448                         }
3449
3450 #ifdef CONFIG_AP
3451                         if (!wpa_s->ap_iface) {
3452                                 wpa_supplicant_set_state(wpa_s,
3453                                                          WPA_DISCONNECTED);
3454                                 wpa_s->scan_req = NORMAL_SCAN_REQ;
3455                                 wpa_supplicant_req_scan(wpa_s, 0, 0);
3456                         } else
3457                                 wpa_supplicant_set_state(wpa_s,
3458                                                          WPA_COMPLETED);
3459 #else /* CONFIG_AP */
3460                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
3461                         wpa_supplicant_req_scan(wpa_s, 0, 0);
3462 #endif /* CONFIG_AP */
3463                 }
3464                 break;
3465         case EVENT_INTERFACE_DISABLED:
3466                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
3467 #ifdef CONFIG_P2P
3468                 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
3469                     (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group &&
3470                      wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)) {
3471                         /*
3472                          * Mark interface disabled if this happens to end up not
3473                          * being removed as a separate P2P group interface.
3474                          */
3475                         wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3476                         /*
3477                          * The interface was externally disabled. Remove
3478                          * it assuming an external entity will start a
3479                          * new session if needed.
3480                          */
3481                         if (wpa_s->current_ssid &&
3482                             wpa_s->current_ssid->p2p_group)
3483                                 wpas_p2p_interface_unavailable(wpa_s);
3484                         else
3485                                 wpas_p2p_disconnect(wpa_s);
3486                         /*
3487                          * wpa_s instance may have been freed, so must not use
3488                          * it here anymore.
3489                          */
3490                         break;
3491                 }
3492                 if (wpa_s->p2p_scan_work && wpa_s->global->p2p &&
3493                     p2p_in_progress(wpa_s->global->p2p) > 1) {
3494                         /* This radio work will be cancelled, so clear P2P
3495                          * state as well.
3496                          */
3497                         p2p_stop_find(wpa_s->global->p2p);
3498                 }
3499 #endif /* CONFIG_P2P */
3500
3501                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
3502                         /*
3503                          * Indicate disconnection to keep ctrl_iface events
3504                          * consistent.
3505                          */
3506                         wpa_supplicant_event_disassoc(
3507                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING, 1);
3508                 }
3509                 wpa_supplicant_mark_disassoc(wpa_s);
3510                 radio_remove_works(wpa_s, NULL, 0);
3511
3512                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3513                 break;
3514         case EVENT_CHANNEL_LIST_CHANGED:
3515                 wpa_supplicant_update_channel_list(
3516                         wpa_s, &data->channel_list_changed);
3517                 break;
3518         case EVENT_INTERFACE_UNAVAILABLE:
3519                 wpas_p2p_interface_unavailable(wpa_s);
3520                 break;
3521         case EVENT_BEST_CHANNEL:
3522                 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
3523                         "(%d %d %d)",
3524                         data->best_chan.freq_24, data->best_chan.freq_5,
3525                         data->best_chan.freq_overall);
3526                 wpa_s->best_24_freq = data->best_chan.freq_24;
3527                 wpa_s->best_5_freq = data->best_chan.freq_5;
3528                 wpa_s->best_overall_freq = data->best_chan.freq_overall;
3529                 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
3530                                               data->best_chan.freq_5,
3531                                               data->best_chan.freq_overall);
3532                 break;
3533         case EVENT_UNPROT_DEAUTH:
3534                 wpa_supplicant_event_unprot_deauth(wpa_s,
3535                                                    &data->unprot_deauth);
3536                 break;
3537         case EVENT_UNPROT_DISASSOC:
3538                 wpa_supplicant_event_unprot_disassoc(wpa_s,
3539                                                      &data->unprot_disassoc);
3540                 break;
3541         case EVENT_STATION_LOW_ACK:
3542 #ifdef CONFIG_AP
3543                 if (wpa_s->ap_iface && data)
3544                         hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
3545                                                   data->low_ack.addr);
3546 #endif /* CONFIG_AP */
3547 #ifdef CONFIG_TDLS
3548                 if (data)
3549                         wpa_tdls_disable_unreachable_link(wpa_s->wpa,
3550                                                           data->low_ack.addr);
3551 #endif /* CONFIG_TDLS */
3552                 break;
3553         case EVENT_IBSS_PEER_LOST:
3554 #ifdef CONFIG_IBSS_RSN
3555                 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
3556 #endif /* CONFIG_IBSS_RSN */
3557                 break;
3558         case EVENT_DRIVER_GTK_REKEY:
3559                 if (os_memcmp(data->driver_gtk_rekey.bssid,
3560                               wpa_s->bssid, ETH_ALEN))
3561                         break;
3562                 if (!wpa_s->wpa)
3563                         break;
3564                 wpa_sm_update_replay_ctr(wpa_s->wpa,
3565                                          data->driver_gtk_rekey.replay_ctr);
3566                 break;
3567         case EVENT_SCHED_SCAN_STOPPED:
3568                 wpa_s->pno = 0;
3569                 wpa_s->sched_scanning = 0;
3570                 wpa_supplicant_notify_scanning(wpa_s, 0);
3571
3572                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
3573                         break;
3574
3575                 /*
3576                  * Start a new sched scan to continue searching for more SSIDs
3577                  * either if timed out or PNO schedule scan is pending.
3578                  */
3579                 if (wpa_s->sched_scan_timed_out) {
3580                         wpa_supplicant_req_sched_scan(wpa_s);
3581                 } else if (wpa_s->pno_sched_pending) {
3582                         wpa_s->pno_sched_pending = 0;
3583                         wpas_start_pno(wpa_s);
3584                 }
3585
3586                 break;
3587         case EVENT_WPS_BUTTON_PUSHED:
3588 #ifdef CONFIG_WPS
3589                 wpas_wps_start_pbc(wpa_s, NULL, 0);
3590 #endif /* CONFIG_WPS */
3591                 break;
3592         case EVENT_AVOID_FREQUENCIES:
3593                 wpa_supplicant_notify_avoid_freq(wpa_s, data);
3594                 break;
3595         case EVENT_CONNECT_FAILED_REASON:
3596 #ifdef CONFIG_AP
3597                 if (!wpa_s->ap_iface || !data)
3598                         break;
3599                 hostapd_event_connect_failed_reason(
3600                         wpa_s->ap_iface->bss[0],
3601                         data->connect_failed_reason.addr,
3602                         data->connect_failed_reason.code);
3603 #endif /* CONFIG_AP */
3604                 break;
3605         case EVENT_NEW_PEER_CANDIDATE:
3606 #ifdef CONFIG_MESH
3607                 if (!wpa_s->ifmsh || !data)
3608                         break;
3609                 wpa_mesh_notify_peer(wpa_s, data->mesh_peer.peer,
3610                                      data->mesh_peer.ies,
3611                                      data->mesh_peer.ie_len);
3612 #endif /* CONFIG_MESH */
3613                 break;
3614         default:
3615                 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
3616                 break;
3617         }
3618 }