wpa_supplicant/events.c

   1 /*
   2  * WPA Supplicant - Driver event processing
   3  * Copyright (c) 2003-2014, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "eapol_supp/eapol_supp_sm.h"
  13 #include "rsn_supp/wpa.h"
  14 #include "eloop.h"
  15 #include "config.h"
  16 #include "l2_packet/l2_packet.h"
  17 #include "wpa_supplicant_i.h"
  18 #include "driver_i.h"
  19 #include "pcsc_funcs.h"
  20 #include "rsn_supp/preauth.h"
  21 #include "rsn_supp/pmksa_cache.h"
  22 #include "common/wpa_ctrl.h"
  23 #include "eap_peer/eap.h"
  24 #include "ap/hostapd.h"
  25 #include "p2p/p2p.h"
  26 #include "wnm_sta.h"
  27 #include "notify.h"
  28 #include "common/ieee802_11_defs.h"
  29 #include "common/ieee802_11_common.h"
  30 #include "crypto/random.h"
  31 #include "blacklist.h"
  32 #include "wpas_glue.h"
  33 #include "wps_supplicant.h"
  34 #include "ibss_rsn.h"
  35 #include "sme.h"
  36 #include "gas_query.h"
  37 #include "p2p_supplicant.h"
  38 #include "bgscan.h"
  39 #include "autoscan.h"
  40 #include "ap.h"
  41 #include "bss.h"
  42 #include "scan.h"
  43 #include "offchannel.h"
  44 #include "interworking.h"
  45
  46
  47 #ifndef CONFIG_NO_SCAN_PROCESSING
  48 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
  49                                               int new_scan, int own_request);
  50 #endif /* CONFIG_NO_SCAN_PROCESSING */
  51
  52
  53 static int wpas_temp_disabled(struct wpa_supplicant *wpa_s,
  54                               struct wpa_ssid *ssid)
  55 {
  56         struct os_reltime now;
  57
  58         if (ssid == NULL || ssid->disabled_until.sec == 0)
  59                 return 0;
  60
  61         os_get_reltime(&now);
  62         if (ssid->disabled_until.sec > now.sec)
  63                 return ssid->disabled_until.sec - now.sec;
  64
  65         wpas_clear_temp_disabled(wpa_s, ssid, 0);
  66
  67         return 0;
  68 }
  69
  70
  71 static struct wpa_bss * wpa_supplicant_get_new_bss(
  72         struct wpa_supplicant *wpa_s, const u8 *bssid)
  73 {
  74         struct wpa_bss *bss = NULL;
  75         struct wpa_ssid *ssid = wpa_s->current_ssid;
  76
  77         if (ssid->ssid_len > 0)
  78                 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
  79         if (!bss)
  80                 bss = wpa_bss_get_bssid(wpa_s, bssid);
  81
  82         return bss;
  83 }
  84
  85
  86 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
  87 {
  88         struct wpa_ssid *ssid, *old_ssid;
  89         struct wpa_bss *bss;
  90         int res;
  91
  92         if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid)
  93                 return 0;
  94
  95         wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
  96                 "information");
  97         ssid = wpa_supplicant_get_ssid(wpa_s);
  98         if (ssid == NULL) {
  99                 wpa_msg(wpa_s, MSG_INFO,
 100                         "No network configuration found for the current AP");
 101                 return -1;
 102         }
 103
 104         if (wpas_network_disabled(wpa_s, ssid)) {
 105                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
 106                 return -1;
 107         }
 108
 109         if (disallowed_bssid(wpa_s, wpa_s->bssid) ||
 110             disallowed_ssid(wpa_s, ssid->ssid, ssid->ssid_len)) {
 111                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS is disallowed");
 112                 return -1;
 113         }
 114
 115         res = wpas_temp_disabled(wpa_s, ssid);
 116         if (res > 0) {
 117                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is temporarily "
 118                         "disabled for %d second(s)", res);
 119                 return -1;
 120         }
 121
 122         wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
 123                 "current AP");
 124         if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
 125                 u8 wpa_ie[80];
 126                 size_t wpa_ie_len = sizeof(wpa_ie);
 127                 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
 128                                               wpa_ie, &wpa_ie_len) < 0)
 129                         wpa_dbg(wpa_s, MSG_DEBUG, "Could not set WPA suites");
 130         } else {
 131                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
 132         }
 133
 134         if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
 135                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
 136         old_ssid = wpa_s->current_ssid;
 137         wpa_s->current_ssid = ssid;
 138
 139         bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
 140         if (!bss) {
 141                 wpa_supplicant_update_scan_results(wpa_s);
 142
 143                 /* Get the BSS from the new scan results */
 144                 bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
 145         }
 146
 147         if (bss)
 148                 wpa_s->current_bss = bss;
 149
 150         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
 151         wpa_supplicant_initiate_eapol(wpa_s);
 152         if (old_ssid != wpa_s->current_ssid)
 153                 wpas_notify_network_changed(wpa_s);
 154
 155         return 0;
 156 }
 157
 158
 159 void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx)
 160 {
 161         struct wpa_supplicant *wpa_s = eloop_ctx;
 162
 163         if (wpa_s->countermeasures) {
 164                 wpa_s->countermeasures = 0;
 165                 wpa_drv_set_countermeasures(wpa_s, 0);
 166                 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
 167                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 168         }
 169 }
 170
 171
 172 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
 173 {
 174         int bssid_changed;
 175
 176         wnm_bss_keep_alive_deinit(wpa_s);
 177
 178 #ifdef CONFIG_IBSS_RSN
 179         ibss_rsn_deinit(wpa_s->ibss_rsn);
 180         wpa_s->ibss_rsn = NULL;
 181 #endif /* CONFIG_IBSS_RSN */
 182
 183 #ifdef CONFIG_AP
 184         wpa_supplicant_ap_deinit(wpa_s);
 185 #endif /* CONFIG_AP */
 186
 187         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
 188                 return;
 189
 190         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 191         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 192         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 193         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 194 #ifdef CONFIG_SME
 195         wpa_s->sme.prev_bssid_set = 0;
 196 #endif /* CONFIG_SME */
 197 #ifdef CONFIG_P2P
 198         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
 199 #endif /* CONFIG_P2P */
 200         wpa_s->current_bss = NULL;
 201         wpa_s->assoc_freq = 0;
 202 #ifdef CONFIG_IEEE80211R
 203 #ifdef CONFIG_SME
 204         if (wpa_s->sme.ft_ies)
 205                 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
 206 #endif /* CONFIG_SME */
 207 #endif /* CONFIG_IEEE80211R */
 208
 209         if (bssid_changed)
 210                 wpas_notify_bssid_changed(wpa_s);
 211
 212         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
 213         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 214         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
 215                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 216         wpa_s->ap_ies_from_associnfo = 0;
 217         wpa_s->current_ssid = NULL;
 218         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 219         wpa_s->key_mgmt = 0;
 220 }
 221
 222
 223 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
 224 {
 225         struct wpa_ie_data ie;
 226         int pmksa_set = -1;
 227         size_t i;
 228
 229         if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
 230             ie.pmkid == NULL)
 231                 return;
 232
 233         for (i = 0; i < ie.num_pmkid; i++) {
 234                 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
 235                                                     ie.pmkid + i * PMKID_LEN,
 236                                                     NULL, NULL, 0);
 237                 if (pmksa_set == 0) {
 238                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
 239                         break;
 240                 }
 241         }
 242
 243         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
 244                 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
 245 }
 246
 247
 248 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
 249                                                  union wpa_event_data *data)
 250 {
 251         if (data == NULL) {
 252                 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
 253                         "event");
 254                 return;
 255         }
 256         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
 257                 " index=%d preauth=%d",
 258                 MAC2STR(data->pmkid_candidate.bssid),
 259                 data->pmkid_candidate.index,
 260                 data->pmkid_candidate.preauth);
 261
 262         pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
 263                             data->pmkid_candidate.index,
 264                             data->pmkid_candidate.preauth);
 265 }
 266
 267
 268 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
 269 {
 270         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 271             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
 272                 return 0;
 273
 274 #ifdef IEEE8021X_EAPOL
 275         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
 276             wpa_s->current_ssid &&
 277             !(wpa_s->current_ssid->eapol_flags &
 278               (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 279                EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
 280                 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
 281                  * plaintext or static WEP keys). */
 282                 return 0;
 283         }
 284 #endif /* IEEE8021X_EAPOL */
 285
 286         return 1;
 287 }
 288
 289
 290 /**
 291  * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
 292  * @wpa_s: pointer to wpa_supplicant data
 293  * @ssid: Configuration data for the network
 294  * Returns: 0 on success, -1 on failure
 295  *
 296  * This function is called when starting authentication with a network that is
 297  * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
 298  */
 299 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 300                               struct wpa_ssid *ssid)
 301 {
 302 #ifdef IEEE8021X_EAPOL
 303 #ifdef PCSC_FUNCS
 304         int aka = 0, sim = 0;
 305
 306         if (ssid->eap.pcsc == NULL || wpa_s->scard != NULL ||
 307             wpa_s->conf->external_sim)
 308                 return 0;
 309
 310         if (ssid->eap.eap_methods == NULL) {
 311                 sim = 1;
 312                 aka = 1;
 313         } else {
 314                 struct eap_method_type *eap = ssid->eap.eap_methods;
 315                 while (eap->vendor != EAP_VENDOR_IETF ||
 316                        eap->method != EAP_TYPE_NONE) {
 317                         if (eap->vendor == EAP_VENDOR_IETF) {
 318                                 if (eap->method == EAP_TYPE_SIM)
 319                                         sim = 1;
 320                                 else if (eap->method == EAP_TYPE_AKA ||
 321                                          eap->method == EAP_TYPE_AKA_PRIME)
 322                                         aka = 1;
 323                         }
 324                         eap++;
 325                 }
 326         }
 327
 328         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
 329                 sim = 0;
 330         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL &&
 331             eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME) ==
 332             NULL)
 333                 aka = 0;
 334
 335         if (!sim && !aka) {
 336                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
 337                         "use SIM, but neither EAP-SIM nor EAP-AKA are "
 338                         "enabled");
 339                 return 0;
 340         }
 341
 342         wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
 343                 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
 344
 345         wpa_s->scard = scard_init(NULL);
 346         if (wpa_s->scard == NULL) {
 347                 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
 348                         "(pcsc-lite)");
 349                 return -1;
 350         }
 351         wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
 352         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
 353 #endif /* PCSC_FUNCS */
 354 #endif /* IEEE8021X_EAPOL */
 355
 356         return 0;
 357 }
 358
 359
 360 #ifndef CONFIG_NO_SCAN_PROCESSING
 361
 362 static int has_wep_key(struct wpa_ssid *ssid)
 363 {
 364         int i;
 365
 366         for (i = 0; i < NUM_WEP_KEYS; i++) {
 367                 if (ssid->wep_key_len[i])
 368                         return 1;
 369         }
 370
 371         return 0;
 372 }
 373
 374
 375 static int wpa_supplicant_match_privacy(struct wpa_bss *bss,
 376                                         struct wpa_ssid *ssid)
 377 {
 378         int privacy = 0;
 379
 380         if (ssid->mixed_cell)
 381                 return 1;
 382
 383 #ifdef CONFIG_WPS
 384         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
 385                 return 1;
 386 #endif /* CONFIG_WPS */
 387
 388         if (has_wep_key(ssid))
 389                 privacy = 1;
 390
 391 #ifdef IEEE8021X_EAPOL
 392         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
 393             ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 394                                  EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
 395                 privacy = 1;
 396 #endif /* IEEE8021X_EAPOL */
 397
 398         if (wpa_key_mgmt_wpa(ssid->key_mgmt))
 399                 privacy = 1;
 400
 401         if (bss->caps & IEEE80211_CAP_PRIVACY)
 402                 return privacy;
 403         return !privacy;
 404 }
 405
 406
 407 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
 408                                          struct wpa_ssid *ssid,
 409                                          struct wpa_bss *bss)
 410 {
 411         struct wpa_ie_data ie;
 412         int proto_match = 0;
 413         const u8 *rsn_ie, *wpa_ie;
 414         int ret;
 415         int wep_ok;
 416
 417         ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
 418         if (ret >= 0)
 419                 return ret;
 420
 421         /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
 422         wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 423                 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 424                   ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
 425                  (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
 426
 427         rsn_ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 428         while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
 429                 proto_match++;
 430
 431                 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
 432                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - parse "
 433                                 "failed");
 434                         break;
 435                 }
 436
 437                 if (wep_ok &&
 438                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 439                 {
 440                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 441                                 "in RSN IE");
 442                         return 1;
 443                 }
 444
 445                 if (!(ie.proto & ssid->proto)) {
 446                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - proto "
 447                                 "mismatch");
 448                         break;
 449                 }
 450
 451                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 452                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - PTK "
 453                                 "cipher mismatch");
 454                         break;
 455                 }
 456
 457                 if (!(ie.group_cipher & ssid->group_cipher)) {
 458                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - GTK "
 459                                 "cipher mismatch");
 460                         break;
 461                 }
 462
 463                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 464                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - key mgmt "
 465                                 "mismatch");
 466                         break;
 467                 }
 468
 469 #ifdef CONFIG_IEEE80211W
 470                 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
 471                     (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
 472                      wpa_s->conf->pmf : ssid->ieee80211w) ==
 473                     MGMT_FRAME_PROTECTION_REQUIRED) {
 474                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - no mgmt "
 475                                 "frame protection");
 476                         break;
 477                 }
 478 #endif /* CONFIG_IEEE80211W */
 479
 480                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on RSN IE");
 481                 return 1;
 482         }
 483
 484         wpa_ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 485         while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
 486                 proto_match++;
 487
 488                 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
 489                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - parse "
 490                                 "failed");
 491                         break;
 492                 }
 493
 494                 if (wep_ok &&
 495                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 496                 {
 497                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 498                                 "in WPA IE");
 499                         return 1;
 500                 }
 501
 502                 if (!(ie.proto & ssid->proto)) {
 503                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - proto "
 504                                 "mismatch");
 505                         break;
 506                 }
 507
 508                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 509                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - PTK "
 510                                 "cipher mismatch");
 511                         break;
 512                 }
 513
 514                 if (!(ie.group_cipher & ssid->group_cipher)) {
 515                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - GTK "
 516                                 "cipher mismatch");
 517                         break;
 518                 }
 519
 520                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 521                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - key mgmt "
 522                                 "mismatch");
 523                         break;
 524                 }
 525
 526                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on WPA IE");
 527                 return 1;
 528         }
 529
 530         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && !wpa_ie &&
 531             !rsn_ie) {
 532                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow for non-WPA IEEE 802.1X");
 533                 return 1;
 534         }
 535
 536         if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
 537             wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
 538                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no WPA/RSN proto match");
 539                 return 0;
 540         }
 541
 542         if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
 543                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in non-WPA/WPA2");
 544                 return 1;
 545         }
 546
 547         wpa_dbg(wpa_s, MSG_DEBUG, "   reject due to mismatch with "
 548                 "WPA/WPA2");
 549
 550         return 0;
 551 }
 552
 553
 554 static int freq_allowed(int *freqs, int freq)
 555 {
 556         int i;
 557
 558         if (freqs == NULL)
 559                 return 1;
 560
 561         for (i = 0; freqs[i]; i++)
 562                 if (freqs[i] == freq)
 563                         return 1;
 564         return 0;
 565 }
 566
 567
 568 static int ht_supported(const struct hostapd_hw_modes *mode)
 569 {
 570         if (!(mode->flags & HOSTAPD_MODE_FLAG_HT_INFO_KNOWN)) {
 571                 /*
 572                  * The driver did not indicate whether it supports HT. Assume
 573                  * it does to avoid connection issues.
 574                  */
 575                 return 1;
 576         }
 577
 578         /*
 579          * IEEE Std 802.11n-2009 20.1.1:
 580          * An HT non-AP STA shall support all EQM rates for one spatial stream.
 581          */
 582         return mode->mcs_set[0] == 0xff;
 583 }
 584
 585
 586 static int vht_supported(const struct hostapd_hw_modes *mode)
 587 {
 588         if (!(mode->flags & HOSTAPD_MODE_FLAG_VHT_INFO_KNOWN)) {
 589                 /*
 590                  * The driver did not indicate whether it supports VHT. Assume
 591                  * it does to avoid connection issues.
 592                  */
 593                 return 1;
 594         }
 595
 596         /*
 597          * A VHT non-AP STA shall support MCS 0-7 for one spatial stream.
 598          * TODO: Verify if this complies with the standard
 599          */
 600         return (mode->vht_mcs_set[0] & 0x3) != 3;
 601 }
 602
 603
 604 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
 605 {
 606         const struct hostapd_hw_modes *mode = NULL, *modes;
 607         const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES };
 608         const u8 *rate_ie;
 609         int i, j, k;
 610
 611         if (bss->freq == 0)
 612                 return 1; /* Cannot do matching without knowing band */
 613
 614         modes = wpa_s->hw.modes;
 615         if (modes == NULL) {
 616                 /*
 617                  * The driver does not provide any additional information
 618                  * about the utilized hardware, so allow the connection attempt
 619                  * to continue.
 620                  */
 621                 return 1;
 622         }
 623
 624         for (i = 0; i < wpa_s->hw.num_modes; i++) {
 625                 for (j = 0; j < modes[i].num_channels; j++) {
 626                         int freq = modes[i].channels[j].freq;
 627                         if (freq == bss->freq) {
 628                                 if (mode &&
 629                                     mode->mode == HOSTAPD_MODE_IEEE80211G)
 630                                         break; /* do not allow 802.11b replace
 631                                                 * 802.11g */
 632                                 mode = &modes[i];
 633                                 break;
 634                         }
 635                 }
 636         }
 637
 638         if (mode == NULL)
 639                 return 0;
 640
 641         for (i = 0; i < (int) sizeof(scan_ie); i++) {
 642                 rate_ie = wpa_bss_get_ie(bss, scan_ie[i]);
 643                 if (rate_ie == NULL)
 644                         continue;
 645
 646                 for (j = 2; j < rate_ie[1] + 2; j++) {
 647                         int flagged = !!(rate_ie[j] & 0x80);
 648                         int r = (rate_ie[j] & 0x7f) * 5;
 649
 650                         /*
 651                          * IEEE Std 802.11n-2009 7.3.2.2:
 652                          * The new BSS Membership selector value is encoded
 653                          * like a legacy basic rate, but it is not a rate and
 654                          * only indicates if the BSS members are required to
 655                          * support the mandatory features of Clause 20 [HT PHY]
 656                          * in order to join the BSS.
 657                          */
 658                         if (flagged && ((rate_ie[j] & 0x7f) ==
 659                                         BSS_MEMBERSHIP_SELECTOR_HT_PHY)) {
 660                                 if (!ht_supported(mode)) {
 661                                         wpa_dbg(wpa_s, MSG_DEBUG,
 662                                                 "   hardware does not support "
 663                                                 "HT PHY");
 664                                         return 0;
 665                                 }
 666                                 continue;
 667                         }
 668
 669                         /* There's also a VHT selector for 802.11ac */
 670                         if (flagged && ((rate_ie[j] & 0x7f) ==
 671                                         BSS_MEMBERSHIP_SELECTOR_VHT_PHY)) {
 672                                 if (!vht_supported(mode)) {
 673                                         wpa_dbg(wpa_s, MSG_DEBUG,
 674                                                 "   hardware does not support "
 675                                                 "VHT PHY");
 676                                         return 0;
 677                                 }
 678                                 continue;
 679                         }
 680
 681                         if (!flagged)
 682                                 continue;
 683
 684                         /* check for legacy basic rates */
 685                         for (k = 0; k < mode->num_rates; k++) {
 686                                 if (mode->rates[k] == r)
 687                                         break;
 688                         }
 689                         if (k == mode->num_rates) {
 690                                 /*
 691                                  * IEEE Std 802.11-2007 7.3.2.2 demands that in
 692                                  * order to join a BSS all required rates
 693                                  * have to be supported by the hardware.
 694                                  */
 695                                 wpa_dbg(wpa_s, MSG_DEBUG, "   hardware does "
 696                                         "not support required rate %d.%d Mbps",
 697                                         r / 10, r % 10);
 698                                 return 0;
 699                         }
 700                 }
 701         }
 702
 703         return 1;
 704 }
 705
 706
 707 static int bss_is_dmg(struct wpa_bss *bss)
 708 {
 709         return bss->freq > 45000;
 710 }
 711
 712
 713 /*
 714  * Test whether BSS is in an ESS.
 715  * This is done differently in DMG (60 GHz) and non-DMG bands
 716  */
 717 static int bss_is_ess(struct wpa_bss *bss)
 718 {
 719         if (bss_is_dmg(bss)) {
 720                 return (bss->caps & IEEE80211_CAP_DMG_MASK) ==
 721                         IEEE80211_CAP_DMG_AP;
 722         }
 723
 724         return ((bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) ==
 725                 IEEE80211_CAP_ESS);
 726 }
 727
 728
 729 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
 730                                             int i, struct wpa_bss *bss,
 731                                             struct wpa_ssid *group)
 732 {
 733         u8 wpa_ie_len, rsn_ie_len;
 734         int wpa;
 735         struct wpa_blacklist *e;
 736         const u8 *ie;
 737         struct wpa_ssid *ssid;
 738
 739         ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 740         wpa_ie_len = ie ? ie[1] : 0;
 741
 742         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 743         rsn_ie_len = ie ? ie[1] : 0;
 744
 745         wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
 746                 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s%s",
 747                 i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len),
 748                 wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
 749                 wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "",
 750                 (wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) ||
 751                  wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) ?
 752                 " p2p" : "");
 753
 754         e = wpa_blacklist_get(wpa_s, bss->bssid);
 755         if (e) {
 756                 int limit = 1;
 757                 if (wpa_supplicant_enabled_networks(wpa_s) == 1) {
 758                         /*
 759                          * When only a single network is enabled, we can
 760                          * trigger blacklisting on the first failure. This
 761                          * should not be done with multiple enabled networks to
 762                          * avoid getting forced to move into a worse ESS on
 763                          * single error if there are no other BSSes of the
 764                          * current ESS.
 765                          */
 766                         limit = 0;
 767                 }
 768                 if (e->count > limit) {
 769                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 770                                 "(count=%d limit=%d)", e->count, limit);
 771                         return NULL;
 772                 }
 773         }
 774
 775         if (bss->ssid_len == 0) {
 776                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID not known");
 777                 return NULL;
 778         }
 779
 780         if (disallowed_bssid(wpa_s, bss->bssid)) {
 781                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID disallowed");
 782                 return NULL;
 783         }
 784
 785         if (disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
 786                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID disallowed");
 787                 return NULL;
 788         }
 789
 790         wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
 791
 792         for (ssid = group; ssid; ssid = ssid->pnext) {
 793                 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
 794                 int res;
 795
 796                 if (wpas_network_disabled(wpa_s, ssid)) {
 797                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled");
 798                         continue;
 799                 }
 800
 801                 res = wpas_temp_disabled(wpa_s, ssid);
 802                 if (res > 0) {
 803                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled "
 804                                 "temporarily for %d second(s)", res);
 805                         continue;
 806                 }
 807
 808 #ifdef CONFIG_WPS
 809                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
 810                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 811                                 "(WPS)");
 812                         continue;
 813                 }
 814
 815                 if (wpa && ssid->ssid_len == 0 &&
 816                     wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 817                         check_ssid = 0;
 818
 819                 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 820                         /* Only allow wildcard SSID match if an AP
 821                          * advertises active WPS operation that matches
 822                          * with our mode. */
 823                         check_ssid = 1;
 824                         if (ssid->ssid_len == 0 &&
 825                             wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 826                                 check_ssid = 0;
 827                 }
 828 #endif /* CONFIG_WPS */
 829
 830                 if (ssid->bssid_set && ssid->ssid_len == 0 &&
 831                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
 832                         check_ssid = 0;
 833
 834                 if (check_ssid &&
 835                     (bss->ssid_len != ssid->ssid_len ||
 836                      os_memcmp(bss->ssid, ssid->ssid, bss->ssid_len) != 0)) {
 837                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID mismatch");
 838                         continue;
 839                 }
 840
 841                 if (ssid->bssid_set &&
 842                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
 843                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID mismatch");
 844                         continue;
 845                 }
 846
 847                 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
 848                         continue;
 849
 850                 if (!wpa &&
 851                     !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 852                     !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
 853                     !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
 854                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-WPA network "
 855                                 "not allowed");
 856                         continue;
 857                 }
 858
 859                 if (wpa && !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 860                     has_wep_key(ssid)) {
 861                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - ignore WPA/WPA2 AP for WEP network block");
 862                         continue;
 863                 }
 864
 865                 if (!wpa_supplicant_match_privacy(bss, ssid)) {
 866                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - privacy "
 867                                 "mismatch");
 868                         continue;
 869                 }
 870
 871                 if (!bss_is_ess(bss)) {
 872                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - not ESS network");
 873                         continue;
 874                 }
 875
 876                 if (!freq_allowed(ssid->freq_list, bss->freq)) {
 877                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - frequency not "
 878                                 "allowed");
 879                         continue;
 880                 }
 881
 882                 if (!rate_match(wpa_s, bss)) {
 883                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - rate sets do "
 884                                 "not match");
 885                         continue;
 886                 }
 887
 888 #ifdef CONFIG_P2P
 889                 if (ssid->p2p_group &&
 890                     !wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 891                     !wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 892                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P IE seen");
 893                         continue;
 894                 }
 895
 896                 if (!is_zero_ether_addr(ssid->go_p2p_dev_addr)) {
 897                         struct wpabuf *p2p_ie;
 898                         u8 dev_addr[ETH_ALEN];
 899
 900                         ie = wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE);
 901                         if (ie == NULL) {
 902                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P element");
 903                                 continue;
 904                         }
 905                         p2p_ie = wpa_bss_get_vendor_ie_multi(
 906                                 bss, P2P_IE_VENDOR_TYPE);
 907                         if (p2p_ie == NULL) {
 908                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - could not fetch P2P element");
 909                                 continue;
 910                         }
 911
 912                         if (p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr) < 0
 913                             || os_memcmp(dev_addr, ssid->go_p2p_dev_addr,
 914                                          ETH_ALEN) != 0) {
 915                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no matching GO P2P Device Address in P2P element");
 916                                 wpabuf_free(p2p_ie);
 917                                 continue;
 918                         }
 919                         wpabuf_free(p2p_ie);
 920                 }
 921
 922                 /*
 923                  * TODO: skip the AP if its P2P IE has Group Formation
 924                  * bit set in the P2P Group Capability Bitmap and we
 925                  * are not in Group Formation with that device.
 926                  */
 927 #endif /* CONFIG_P2P */
 928
 929                 /* Matching configuration found */
 930                 return ssid;
 931         }
 932
 933         /* No matching configuration found */
 934         return NULL;
 935 }
 936
 937
 938 static struct wpa_bss *
 939 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
 940                           struct wpa_ssid *group,
 941                           struct wpa_ssid **selected_ssid)
 942 {
 943         unsigned int i;
 944
 945         wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
 946                 group->priority);
 947
 948         for (i = 0; i < wpa_s->last_scan_res_used; i++) {
 949                 struct wpa_bss *bss = wpa_s->last_scan_res[i];
 950                 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group);
 951                 if (!*selected_ssid)
 952                         continue;
 953                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected BSS " MACSTR
 954                         " ssid='%s'",
 955                         MAC2STR(bss->bssid),
 956                         wpa_ssid_txt(bss->ssid, bss->ssid_len));
 957                 return bss;
 958         }
 959
 960         return NULL;
 961 }
 962
 963
 964 struct wpa_bss * wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
 965                                              struct wpa_ssid **selected_ssid)
 966 {
 967         struct wpa_bss *selected = NULL;
 968         int prio;
 969
 970         if (wpa_s->last_scan_res == NULL ||
 971             wpa_s->last_scan_res_used == 0)
 972                 return NULL; /* no scan results from last update */
 973
 974         while (selected == NULL) {
 975                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 976                         selected = wpa_supplicant_select_bss(
 977                                 wpa_s, wpa_s->conf->pssid[prio],
 978                                 selected_ssid);
 979                         if (selected)
 980                                 break;
 981                 }
 982
 983                 if (selected == NULL && wpa_s->blacklist &&
 984                     !wpa_s->countermeasures) {
 985                         wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
 986                                 "blacklist and try again");
 987                         wpa_blacklist_clear(wpa_s);
 988                         wpa_s->blacklist_cleared++;
 989                 } else if (selected == NULL)
 990                         break;
 991         }
 992
 993         return selected;
 994 }
 995
 996
 997 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
 998                                         int timeout_sec, int timeout_usec)
 999 {
1000         if (!wpa_supplicant_enabled_networks(wpa_s)) {
1001                 /*
1002                  * No networks are enabled; short-circuit request so
1003                  * we don't wait timeout seconds before transitioning
1004                  * to INACTIVE state.
1005                  */
1006                 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request "
1007                         "since there are no enabled networks");
1008                 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
1009                 return;
1010         }
1011
1012         wpa_s->scan_for_connection = 1;
1013         wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
1014 }
1015
1016
1017 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
1018                            struct wpa_bss *selected,
1019                            struct wpa_ssid *ssid)
1020 {
1021         if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
1022                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
1023                         "PBC session overlap");
1024 #ifdef CONFIG_P2P
1025                 if (wpas_p2p_notif_pbc_overlap(wpa_s) == 1)
1026                         return -1;
1027 #endif /* CONFIG_P2P */
1028
1029 #ifdef CONFIG_WPS
1030                 wpas_wps_cancel(wpa_s);
1031 #endif /* CONFIG_WPS */
1032                 return -1;
1033         }
1034
1035         wpa_msg(wpa_s, MSG_DEBUG,
1036                 "Considering connect request: reassociate: %d  selected: "
1037                 MACSTR "  bssid: " MACSTR "  pending: " MACSTR
1038                 "  wpa_state: %s  ssid=%p  current_ssid=%p",
1039                 wpa_s->reassociate, MAC2STR(selected->bssid),
1040                 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
1041                 wpa_supplicant_state_txt(wpa_s->wpa_state),
1042                 ssid, wpa_s->current_ssid);
1043
1044         /*
1045          * Do not trigger new association unless the BSSID has changed or if
1046          * reassociation is requested. If we are in process of associating with
1047          * the selected BSSID, do not trigger new attempt.
1048          */
1049         if (wpa_s->reassociate ||
1050             (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
1051              ((wpa_s->wpa_state != WPA_ASSOCIATING &&
1052                wpa_s->wpa_state != WPA_AUTHENTICATING) ||
1053               (!is_zero_ether_addr(wpa_s->pending_bssid) &&
1054                os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
1055                0) ||
1056               (is_zero_ether_addr(wpa_s->pending_bssid) &&
1057                ssid != wpa_s->current_ssid)))) {
1058                 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
1059                         wpa_supplicant_req_new_scan(wpa_s, 10, 0);
1060                         return 0;
1061                 }
1062                 wpa_msg(wpa_s, MSG_DEBUG, "Request association with " MACSTR,
1063                         MAC2STR(selected->bssid));
1064                 wpa_supplicant_associate(wpa_s, selected, ssid);
1065         } else {
1066                 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated or trying to "
1067                         "connect with the selected AP");
1068         }
1069
1070         return 0;
1071 }
1072
1073
1074 static struct wpa_ssid *
1075 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
1076 {
1077         int prio;
1078         struct wpa_ssid *ssid;
1079
1080         for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1081                 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
1082                 {
1083                         if (wpas_network_disabled(wpa_s, ssid))
1084                                 continue;
1085                         if (ssid->mode == IEEE80211_MODE_IBSS ||
1086                             ssid->mode == IEEE80211_MODE_AP)
1087                                 return ssid;
1088                 }
1089         }
1090         return NULL;
1091 }
1092
1093
1094 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
1095  * on BSS added and BSS changed events */
1096 static void wpa_supplicant_rsn_preauth_scan_results(
1097         struct wpa_supplicant *wpa_s)
1098 {
1099         struct wpa_bss *bss;
1100
1101         if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
1102                 return;
1103
1104         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1105                 const u8 *ssid, *rsn;
1106
1107                 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
1108                 if (ssid == NULL)
1109                         continue;
1110
1111                 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1112                 if (rsn == NULL)
1113                         continue;
1114
1115                 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
1116         }
1117
1118 }
1119
1120
1121 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
1122                                        struct wpa_bss *selected,
1123                                        struct wpa_ssid *ssid)
1124 {
1125         struct wpa_bss *current_bss = NULL;
1126         int min_diff;
1127
1128         if (wpa_s->reassociate)
1129                 return 1; /* explicit request to reassociate */
1130         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1131                 return 1; /* we are not associated; continue */
1132         if (wpa_s->current_ssid == NULL)
1133                 return 1; /* unknown current SSID */
1134         if (wpa_s->current_ssid != ssid)
1135                 return 1; /* different network block */
1136
1137         if (wpas_driver_bss_selection(wpa_s))
1138                 return 0; /* Driver-based roaming */
1139
1140         if (wpa_s->current_ssid->ssid)
1141                 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid,
1142                                           wpa_s->current_ssid->ssid,
1143                                           wpa_s->current_ssid->ssid_len);
1144         if (!current_bss)
1145                 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
1146
1147         if (!current_bss)
1148                 return 1; /* current BSS not seen in scan results */
1149
1150         if (current_bss == selected)
1151                 return 0;
1152
1153         if (selected->last_update_idx > current_bss->last_update_idx)
1154                 return 1; /* current BSS not seen in the last scan */
1155
1156 #ifndef CONFIG_NO_ROAMING
1157         wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
1158         wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
1159                 MAC2STR(current_bss->bssid), current_bss->level);
1160         wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
1161                 MAC2STR(selected->bssid), selected->level);
1162
1163         if (wpa_s->current_ssid->bssid_set &&
1164             os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
1165             0) {
1166                 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
1167                         "has preferred BSSID");
1168                 return 1;
1169         }
1170
1171         if (current_bss->level < 0 && current_bss->level > selected->level) {
1172                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better "
1173                         "signal level");
1174                 return 0;
1175         }
1176
1177         min_diff = 2;
1178         if (current_bss->level < 0) {
1179                 if (current_bss->level < -85)
1180                         min_diff = 1;
1181                 else if (current_bss->level < -80)
1182                         min_diff = 2;
1183                 else if (current_bss->level < -75)
1184                         min_diff = 3;
1185                 else if (current_bss->level < -70)
1186                         min_diff = 4;
1187                 else
1188                         min_diff = 5;
1189         }
1190         if (abs(current_bss->level - selected->level) < min_diff) {
1191                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
1192                         "in signal level");
1193                 return 0;
1194         }
1195
1196         return 1;
1197 #else /* CONFIG_NO_ROAMING */
1198         return 0;
1199 #endif /* CONFIG_NO_ROAMING */
1200 }
1201
1202
1203 /* Return != 0 if no scan results could be fetched or if scan results should not
1204  * be shared with other virtual interfaces. */
1205 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1206                                               union wpa_event_data *data,
1207                                               int own_request)
1208 {
1209         struct wpa_scan_results *scan_res = NULL;
1210         int ret = 0;
1211         int ap = 0;
1212 #ifndef CONFIG_NO_RANDOM_POOL
1213         size_t i, num;
1214 #endif /* CONFIG_NO_RANDOM_POOL */
1215
1216 #ifdef CONFIG_AP
1217         if (wpa_s->ap_iface)
1218                 ap = 1;
1219 #endif /* CONFIG_AP */
1220
1221         wpa_supplicant_notify_scanning(wpa_s, 0);
1222
1223         scan_res = wpa_supplicant_get_scan_results(wpa_s,
1224                                                    data ? &data->scan_info :
1225                                                    NULL, 1);
1226         if (scan_res == NULL) {
1227                 if (wpa_s->conf->ap_scan == 2 || ap ||
1228                     wpa_s->scan_res_handler == scan_only_handler)
1229                         return -1;
1230                 if (!own_request)
1231                         return -1;
1232                 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1233                         "scanning again");
1234                 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1235                 ret = -1;
1236                 goto scan_work_done;
1237         }
1238
1239 #ifndef CONFIG_NO_RANDOM_POOL
1240         num = scan_res->num;
1241         if (num > 10)
1242                 num = 10;
1243         for (i = 0; i < num; i++) {
1244                 u8 buf[5];
1245                 struct wpa_scan_res *res = scan_res->res[i];
1246                 buf[0] = res->bssid[5];
1247                 buf[1] = res->qual & 0xff;
1248                 buf[2] = res->noise & 0xff;
1249                 buf[3] = res->level & 0xff;
1250                 buf[4] = res->tsf & 0xff;
1251                 random_add_randomness(buf, sizeof(buf));
1252         }
1253 #endif /* CONFIG_NO_RANDOM_POOL */
1254
1255         if (own_request && wpa_s->scan_res_handler &&
1256             (wpa_s->own_scan_running || !wpa_s->external_scan_running)) {
1257                 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1258                                          struct wpa_scan_results *scan_res);
1259
1260                 scan_res_handler = wpa_s->scan_res_handler;
1261                 wpa_s->scan_res_handler = NULL;
1262                 scan_res_handler(wpa_s, scan_res);
1263                 ret = -2;
1264                 goto scan_work_done;
1265         }
1266
1267         if (ap) {
1268                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1269 #ifdef CONFIG_AP
1270                 if (wpa_s->ap_iface->scan_cb)
1271                         wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1272 #endif /* CONFIG_AP */
1273                 goto scan_work_done;
1274         }
1275
1276         wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available (own=%u ext=%u)",
1277                 wpa_s->own_scan_running, wpa_s->external_scan_running);
1278         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
1279             wpa_s->manual_scan_use_id && wpa_s->own_scan_running) {
1280                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS "id=%u",
1281                              wpa_s->manual_scan_id);
1282                 wpa_s->manual_scan_use_id = 0;
1283         } else {
1284                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1285         }
1286         wpas_notify_scan_results(wpa_s);
1287
1288         wpas_notify_scan_done(wpa_s, 1);
1289
1290         if (!wpa_s->own_scan_running && wpa_s->external_scan_running) {
1291                 wpa_dbg(wpa_s, MSG_DEBUG, "Do not use results from externally requested scan operation for network selection");
1292                 wpa_scan_results_free(scan_res);
1293                 return 0;
1294         }
1295
1296         if (sme_proc_obss_scan(wpa_s) > 0)
1297                 goto scan_work_done;
1298
1299         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s)))
1300                 goto scan_work_done;
1301
1302         if (autoscan_notify_scan(wpa_s, scan_res))
1303                 goto scan_work_done;
1304
1305         if (wpa_s->disconnected) {
1306                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1307                 goto scan_work_done;
1308         }
1309
1310         if (!wpas_driver_bss_selection(wpa_s) &&
1311             bgscan_notify_scan(wpa_s, scan_res) == 1)
1312                 goto scan_work_done;
1313
1314         wpas_wps_update_ap_info(wpa_s, scan_res);
1315
1316         wpa_scan_results_free(scan_res);
1317
1318         if (wpa_s->scan_work) {
1319                 struct wpa_radio_work *work = wpa_s->scan_work;
1320                 wpa_s->scan_work = NULL;
1321                 radio_work_done(work);
1322         }
1323
1324         return wpas_select_network_from_last_scan(wpa_s, 1, own_request);
1325
1326 scan_work_done:
1327         wpa_scan_results_free(scan_res);
1328         if (wpa_s->scan_work) {
1329                 struct wpa_radio_work *work = wpa_s->scan_work;
1330                 wpa_s->scan_work = NULL;
1331                 radio_work_done(work);
1332         }
1333         return ret;
1334 }
1335
1336
1337 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
1338                                               int new_scan, int own_request)
1339 {
1340         struct wpa_bss *selected;
1341         struct wpa_ssid *ssid = NULL;
1342
1343         selected = wpa_supplicant_pick_network(wpa_s, &ssid);
1344
1345         if (selected) {
1346                 int skip;
1347                 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid);
1348                 if (skip) {
1349                         if (new_scan)
1350                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1351                         return 0;
1352                 }
1353
1354                 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1355                         wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1356                         return -1;
1357                 }
1358                 if (new_scan)
1359                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1360                 /*
1361                  * Do not notify other virtual radios of scan results since we do not
1362                  * want them to start other associations at the same time.
1363                  */
1364                 return 1;
1365         } else {
1366                 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1367                 ssid = wpa_supplicant_pick_new_network(wpa_s);
1368                 if (ssid) {
1369                         wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1370                         wpa_supplicant_associate(wpa_s, NULL, ssid);
1371                         if (new_scan)
1372                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1373                 } else if (own_request) {
1374                         /*
1375                          * No SSID found. If SCAN results are as a result of
1376                          * own scan request and not due to a scan request on
1377                          * another shared interface, try another scan.
1378                          */
1379                         int timeout_sec = wpa_s->scan_interval;
1380                         int timeout_usec = 0;
1381 #ifdef CONFIG_P2P
1382                         if (wpas_p2p_scan_no_go_seen(wpa_s) == 1)
1383                                 return 0;
1384
1385                         if (wpa_s->p2p_in_provisioning ||
1386                             wpa_s->show_group_started) {
1387                                 /*
1388                                  * Use shorter wait during P2P Provisioning
1389                                  * state and during P2P join-a-group operation
1390                                  * to speed up group formation.
1391                                  */
1392                                 timeout_sec = 0;
1393                                 timeout_usec = 250000;
1394                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1395                                                             timeout_usec);
1396                                 return 0;
1397                         }
1398 #endif /* CONFIG_P2P */
1399 #ifdef CONFIG_INTERWORKING
1400                         if (wpa_s->conf->auto_interworking &&
1401                             wpa_s->conf->interworking &&
1402                             wpa_s->conf->cred) {
1403                                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: "
1404                                         "start ANQP fetch since no matching "
1405                                         "networks found");
1406                                 wpa_s->network_select = 1;
1407                                 wpa_s->auto_network_select = 1;
1408                                 interworking_start_fetch_anqp(wpa_s);
1409                                 return 1;
1410                         }
1411 #endif /* CONFIG_INTERWORKING */
1412 #ifdef CONFIG_WPS
1413                         if (wpa_s->after_wps > 0 || wpas_wps_searching(wpa_s)) {
1414                                 wpa_dbg(wpa_s, MSG_DEBUG, "Use shorter wait during WPS processing");
1415                                 timeout_sec = 0;
1416                                 timeout_usec = 500000;
1417                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1418                                                             timeout_usec);
1419                                 return 0;
1420                         }
1421 #endif /* CONFIG_WPS */
1422                         if (wpa_supplicant_req_sched_scan(wpa_s))
1423                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1424                                                             timeout_usec);
1425                 }
1426         }
1427         return 0;
1428 }
1429
1430
1431 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1432                                               union wpa_event_data *data)
1433 {
1434         struct wpa_supplicant *ifs;
1435
1436         if (_wpa_supplicant_event_scan_results(wpa_s, data, 1) != 0) {
1437                 /*
1438                  * If no scan results could be fetched, then no need to
1439                  * notify those interfaces that did not actually request
1440                  * this scan. Similarly, if scan results started a new operation on this
1441                  * interface, do not notify other interfaces to avoid concurrent
1442                  * operations during a connection attempt.
1443                  */
1444                 return;
1445         }
1446
1447         /*
1448          * Check other interfaces to see if they share the same radio. If
1449          * so, they get updated with this same scan info.
1450          */
1451         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
1452                          radio_list) {
1453                 if (ifs != wpa_s) {
1454                         wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1455                                    "sibling", ifs->ifname);
1456                         _wpa_supplicant_event_scan_results(ifs, data, 0);
1457                 }
1458         }
1459 }
1460
1461 #endif /* CONFIG_NO_SCAN_PROCESSING */
1462
1463
1464 int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s)
1465 {
1466 #ifdef CONFIG_NO_SCAN_PROCESSING
1467         return -1;
1468 #else /* CONFIG_NO_SCAN_PROCESSING */
1469         struct os_reltime now;
1470
1471         if (wpa_s->last_scan_res_used <= 0)
1472                 return -1;
1473
1474         os_get_reltime(&now);
1475         if (os_reltime_expired(&now, &wpa_s->last_scan, 5)) {
1476                 wpa_printf(MSG_DEBUG, "Fast associate: Old scan results");
1477                 return -1;
1478         }
1479
1480         return wpas_select_network_from_last_scan(wpa_s, 0, 1);
1481 #endif /* CONFIG_NO_SCAN_PROCESSING */
1482 }
1483
1484 #ifdef CONFIG_WNM
1485
1486 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx)
1487 {
1488         struct wpa_supplicant *wpa_s = eloop_ctx;
1489
1490         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1491                 return;
1492
1493         if (!wpa_s->no_keep_alive) {
1494                 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR,
1495                            MAC2STR(wpa_s->bssid));
1496                 /* TODO: could skip this if normal data traffic has been sent */
1497                 /* TODO: Consider using some more appropriate data frame for
1498                  * this */
1499                 if (wpa_s->l2)
1500                         l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800,
1501                                        (u8 *) "", 0);
1502         }
1503
1504 #ifdef CONFIG_SME
1505         if (wpa_s->sme.bss_max_idle_period) {
1506                 unsigned int msec;
1507                 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */
1508                 if (msec > 100)
1509                         msec -= 100;
1510                 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1511                                        wnm_bss_keep_alive, wpa_s, NULL);
1512         }
1513 #endif /* CONFIG_SME */
1514 }
1515
1516
1517 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s,
1518                                    const u8 *ies, size_t ies_len)
1519 {
1520         struct ieee802_11_elems elems;
1521
1522         if (ies == NULL)
1523                 return;
1524
1525         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1526                 return;
1527
1528 #ifdef CONFIG_SME
1529         if (elems.bss_max_idle_period) {
1530                 unsigned int msec;
1531                 wpa_s->sme.bss_max_idle_period =
1532                         WPA_GET_LE16(elems.bss_max_idle_period);
1533                 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 "
1534                            "TU)%s", wpa_s->sme.bss_max_idle_period,
1535                            (elems.bss_max_idle_period[2] & 0x01) ?
1536                            " (protected keep-live required)" : "");
1537                 if (wpa_s->sme.bss_max_idle_period == 0)
1538                         wpa_s->sme.bss_max_idle_period = 1;
1539                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
1540                         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1541                          /* msec times 1000 */
1542                         msec = wpa_s->sme.bss_max_idle_period * 1024;
1543                         if (msec > 100)
1544                                 msec -= 100;
1545                         eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1546                                                wnm_bss_keep_alive, wpa_s,
1547                                                NULL);
1548                 }
1549         }
1550 #endif /* CONFIG_SME */
1551 }
1552
1553 #endif /* CONFIG_WNM */
1554
1555
1556 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s)
1557 {
1558 #ifdef CONFIG_WNM
1559         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1560 #endif /* CONFIG_WNM */
1561 }
1562
1563
1564 #ifdef CONFIG_INTERWORKING
1565
1566 static int wpas_qos_map_set(struct wpa_supplicant *wpa_s, const u8 *qos_map,
1567                             size_t len)
1568 {
1569         int res;
1570
1571         wpa_hexdump(MSG_DEBUG, "Interworking: QoS Map Set", qos_map, len);
1572         res = wpa_drv_set_qos_map(wpa_s, qos_map, len);
1573         if (res) {
1574                 wpa_printf(MSG_DEBUG, "Interworking: Failed to configure QoS Map Set to the driver");
1575         }
1576
1577         return res;
1578 }
1579
1580
1581 static void interworking_process_assoc_resp(struct wpa_supplicant *wpa_s,
1582                                             const u8 *ies, size_t ies_len)
1583 {
1584         struct ieee802_11_elems elems;
1585
1586         if (ies == NULL)
1587                 return;
1588
1589         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1590                 return;
1591
1592         if (elems.qos_map_set) {
1593                 wpas_qos_map_set(wpa_s, elems.qos_map_set,
1594                                  elems.qos_map_set_len);
1595         }
1596 }
1597
1598 #endif /* CONFIG_INTERWORKING */
1599
1600
1601 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1602                                           union wpa_event_data *data)
1603 {
1604         int l, len, found = 0, wpa_found, rsn_found;
1605         const u8 *p;
1606 #ifdef CONFIG_IEEE80211R
1607         u8 bssid[ETH_ALEN];
1608 #endif /* CONFIG_IEEE80211R */
1609
1610         wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1611         if (data->assoc_info.req_ies)
1612                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1613                             data->assoc_info.req_ies_len);
1614         if (data->assoc_info.resp_ies) {
1615                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1616                             data->assoc_info.resp_ies_len);
1617 #ifdef CONFIG_TDLS
1618                 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1619                                         data->assoc_info.resp_ies_len);
1620 #endif /* CONFIG_TDLS */
1621 #ifdef CONFIG_WNM
1622                 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1623                                        data->assoc_info.resp_ies_len);
1624 #endif /* CONFIG_WNM */
1625 #ifdef CONFIG_INTERWORKING
1626                 interworking_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1627                                                 data->assoc_info.resp_ies_len);
1628 #endif /* CONFIG_INTERWORKING */
1629         }
1630         if (data->assoc_info.beacon_ies)
1631                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1632                             data->assoc_info.beacon_ies,
1633                             data->assoc_info.beacon_ies_len);
1634         if (data->assoc_info.freq)
1635                 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1636                         data->assoc_info.freq);
1637
1638         p = data->assoc_info.req_ies;
1639         l = data->assoc_info.req_ies_len;
1640
1641         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1642         while (p && l >= 2) {
1643                 len = p[1] + 2;
1644                 if (len > l) {
1645                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1646                                     p, l);
1647                         break;
1648                 }
1649                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1650                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1651                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1652                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1653                                 break;
1654                         found = 1;
1655                         wpa_find_assoc_pmkid(wpa_s);
1656                         break;
1657                 }
1658                 l -= len;
1659                 p += len;
1660         }
1661         if (!found && data->assoc_info.req_ies)
1662                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1663
1664 #ifdef CONFIG_IEEE80211R
1665 #ifdef CONFIG_SME
1666         if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1667                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1668                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1669                                                  data->assoc_info.resp_ies,
1670                                                  data->assoc_info.resp_ies_len,
1671                                                  bssid) < 0) {
1672                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1673                                 "Reassociation Response failed");
1674                         wpa_supplicant_deauthenticate(
1675                                 wpa_s, WLAN_REASON_INVALID_IE);
1676                         return -1;
1677                 }
1678         }
1679
1680         p = data->assoc_info.resp_ies;
1681         l = data->assoc_info.resp_ies_len;
1682
1683 #ifdef CONFIG_WPS_STRICT
1684         if (p && wpa_s->current_ssid &&
1685             wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1686                 struct wpabuf *wps;
1687                 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1688                 if (wps == NULL) {
1689                         wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1690                                 "include WPS IE in (Re)Association Response");
1691                         return -1;
1692                 }
1693
1694                 if (wps_validate_assoc_resp(wps) < 0) {
1695                         wpabuf_free(wps);
1696                         wpa_supplicant_deauthenticate(
1697                                 wpa_s, WLAN_REASON_INVALID_IE);
1698                         return -1;
1699                 }
1700                 wpabuf_free(wps);
1701         }
1702 #endif /* CONFIG_WPS_STRICT */
1703
1704         /* Go through the IEs and make a copy of the MDIE, if present. */
1705         while (p && l >= 2) {
1706                 len = p[1] + 2;
1707                 if (len > l) {
1708                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1709                                     p, l);
1710                         break;
1711                 }
1712                 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1713                     p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1714                         wpa_s->sme.ft_used = 1;
1715                         os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1716                                   MOBILITY_DOMAIN_ID_LEN);
1717                         break;
1718                 }
1719                 l -= len;
1720                 p += len;
1721         }
1722 #endif /* CONFIG_SME */
1723
1724         /* Process FT when SME is in the driver */
1725         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
1726             wpa_ft_is_completed(wpa_s->wpa)) {
1727                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1728                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1729                                                  data->assoc_info.resp_ies,
1730                                                  data->assoc_info.resp_ies_len,
1731                                                  bssid) < 0) {
1732                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1733                                 "Reassociation Response failed");
1734                         wpa_supplicant_deauthenticate(
1735                                 wpa_s, WLAN_REASON_INVALID_IE);
1736                         return -1;
1737                 }
1738                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Reassociation Response done");
1739         }
1740
1741         wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1742                              data->assoc_info.resp_ies_len);
1743 #endif /* CONFIG_IEEE80211R */
1744
1745         /* WPA/RSN IE from Beacon/ProbeResp */
1746         p = data->assoc_info.beacon_ies;
1747         l = data->assoc_info.beacon_ies_len;
1748
1749         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1750          */
1751         wpa_found = rsn_found = 0;
1752         while (p && l >= 2) {
1753                 len = p[1] + 2;
1754                 if (len > l) {
1755                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1756                                     p, l);
1757                         break;
1758                 }
1759                 if (!wpa_found &&
1760                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1761                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1762                         wpa_found = 1;
1763                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1764                 }
1765
1766                 if (!rsn_found &&
1767                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
1768                         rsn_found = 1;
1769                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1770                 }
1771
1772                 l -= len;
1773                 p += len;
1774         }
1775
1776         if (!wpa_found && data->assoc_info.beacon_ies)
1777                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1778         if (!rsn_found && data->assoc_info.beacon_ies)
1779                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1780         if (wpa_found || rsn_found)
1781                 wpa_s->ap_ies_from_associnfo = 1;
1782
1783         if (wpa_s->assoc_freq && data->assoc_info.freq &&
1784             wpa_s->assoc_freq != data->assoc_info.freq) {
1785                 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
1786                            "%u to %u MHz",
1787                            wpa_s->assoc_freq, data->assoc_info.freq);
1788                 wpa_supplicant_update_scan_results(wpa_s);
1789         }
1790
1791         wpa_s->assoc_freq = data->assoc_info.freq;
1792
1793         return 0;
1794 }
1795
1796
1797 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
1798 {
1799         const u8 *bss_wpa = NULL, *bss_rsn = NULL;
1800
1801         if (!wpa_s->current_bss || !wpa_s->current_ssid)
1802                 return -1;
1803
1804         if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
1805                 return 0;
1806
1807         bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
1808                                         WPA_IE_VENDOR_TYPE);
1809         bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
1810
1811         if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
1812                                  bss_wpa ? 2 + bss_wpa[1] : 0) ||
1813             wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
1814                                  bss_rsn ? 2 + bss_rsn[1] : 0))
1815                 return -1;
1816
1817         return 0;
1818 }
1819
1820
1821 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1822                                        union wpa_event_data *data)
1823 {
1824         u8 bssid[ETH_ALEN];
1825         int ft_completed;
1826
1827 #ifdef CONFIG_AP
1828         if (wpa_s->ap_iface) {
1829                 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1830                                     data->assoc_info.addr,
1831                                     data->assoc_info.req_ies,
1832                                     data->assoc_info.req_ies_len,
1833                                     data->assoc_info.reassoc);
1834                 return;
1835         }
1836 #endif /* CONFIG_AP */
1837
1838         ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1839         if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1840                 return;
1841
1842         if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
1843                 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID");
1844                 wpa_supplicant_deauthenticate(
1845                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1846                 return;
1847         }
1848
1849         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1850         if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
1851                 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1852                         MACSTR, MAC2STR(bssid));
1853                 random_add_randomness(bssid, ETH_ALEN);
1854                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1855                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1856                 wpas_notify_bssid_changed(wpa_s);
1857
1858                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1859                         wpa_clear_keys(wpa_s, bssid);
1860                 }
1861                 if (wpa_supplicant_select_config(wpa_s) < 0) {
1862                         wpa_supplicant_deauthenticate(
1863                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1864                         return;
1865                 }
1866
1867                 if (wpa_s->conf->ap_scan == 1 &&
1868                     wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
1869                         if (wpa_supplicant_assoc_update_ie(wpa_s) < 0)
1870                                 wpa_msg(wpa_s, MSG_WARNING,
1871                                         "WPA/RSN IEs not updated");
1872                 }
1873         }
1874
1875 #ifdef CONFIG_SME
1876         os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1877         wpa_s->sme.prev_bssid_set = 1;
1878 #endif /* CONFIG_SME */
1879
1880         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1881         if (wpa_s->current_ssid) {
1882                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1883                  * initialized before association, but for other modes,
1884                  * initialize PC/SC here, if the current configuration needs
1885                  * smartcard or SIM/USIM. */
1886                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1887         }
1888         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1889         if (wpa_s->l2)
1890                 l2_packet_notify_auth_start(wpa_s->l2);
1891
1892         /*
1893          * Set portEnabled first to FALSE in order to get EAP state machine out
1894          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1895          * state machine may transit to AUTHENTICATING state based on obsolete
1896          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1897          * AUTHENTICATED without ever giving chance to EAP state machine to
1898          * reset the state.
1899          */
1900         if (!ft_completed) {
1901                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1902                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1903         }
1904         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1905                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1906         /* 802.1X::portControl = Auto */
1907         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1908         wpa_s->eapol_received = 0;
1909         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1910             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1911             (wpa_s->current_ssid &&
1912              wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1913                 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE &&
1914                     (wpa_s->drv_flags &
1915                      WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
1916                         /*
1917                          * Set the key after having received joined-IBSS event
1918                          * from the driver.
1919                          */
1920                         wpa_supplicant_set_wpa_none_key(wpa_s,
1921                                                         wpa_s->current_ssid);
1922                 }
1923                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1924                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1925         } else if (!ft_completed) {
1926                 /* Timeout for receiving the first EAPOL packet */
1927                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1928         }
1929         wpa_supplicant_cancel_scan(wpa_s);
1930
1931         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1932             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1933                 /*
1934                  * We are done; the driver will take care of RSN 4-way
1935                  * handshake.
1936                  */
1937                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1938                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1939                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1940                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1941         } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1942                    wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1943                 /*
1944                  * The driver will take care of RSN 4-way handshake, so we need
1945                  * to allow EAPOL supplicant to complete its work without
1946                  * waiting for WPA supplicant.
1947                  */
1948                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1949         } else if (ft_completed) {
1950                 /*
1951                  * FT protocol completed - make sure EAPOL state machine ends
1952                  * up in authenticated.
1953                  */
1954                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1955                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1956                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1957                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1958         }
1959
1960         wpa_s->last_eapol_matches_bssid = 0;
1961
1962         if (wpa_s->pending_eapol_rx) {
1963                 struct os_reltime now, age;
1964                 os_get_reltime(&now);
1965                 os_reltime_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
1966                 if (age.sec == 0 && age.usec < 100000 &&
1967                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
1968                     0) {
1969                         wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
1970                                 "frame that was received just before "
1971                                 "association notification");
1972                         wpa_supplicant_rx_eapol(
1973                                 wpa_s, wpa_s->pending_eapol_rx_src,
1974                                 wpabuf_head(wpa_s->pending_eapol_rx),
1975                                 wpabuf_len(wpa_s->pending_eapol_rx));
1976                 }
1977                 wpabuf_free(wpa_s->pending_eapol_rx);
1978                 wpa_s->pending_eapol_rx = NULL;
1979         }
1980
1981         if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1982              wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
1983             wpa_s->current_ssid &&
1984             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
1985                 /* Set static WEP keys again */
1986                 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
1987         }
1988
1989 #ifdef CONFIG_IBSS_RSN
1990         if (wpa_s->current_ssid &&
1991             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
1992             wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1993             wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
1994             wpa_s->ibss_rsn == NULL) {
1995                 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
1996                 if (!wpa_s->ibss_rsn) {
1997                         wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
1998                         wpa_supplicant_deauthenticate(
1999                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2000                         return;
2001                 }
2002
2003                 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
2004         }
2005 #endif /* CONFIG_IBSS_RSN */
2006
2007         wpas_wps_notify_assoc(wpa_s, bssid);
2008 }
2009
2010
2011 static int disconnect_reason_recoverable(u16 reason_code)
2012 {
2013         return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
2014                 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
2015                 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
2016 }
2017
2018
2019 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
2020                                           u16 reason_code,
2021                                           int locally_generated)
2022 {
2023         const u8 *bssid;
2024
2025         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2026                 /*
2027                  * At least Host AP driver and a Prism3 card seemed to be
2028                  * generating streams of disconnected events when configuring
2029                  * IBSS for WPA-None. Ignore them for now.
2030                  */
2031                 return;
2032         }
2033
2034         bssid = wpa_s->bssid;
2035         if (is_zero_ether_addr(bssid))
2036                 bssid = wpa_s->pending_bssid;
2037
2038         if (!is_zero_ether_addr(bssid) ||
2039             wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2040                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
2041                         " reason=%d%s",
2042                         MAC2STR(bssid), reason_code,
2043                         locally_generated ? " locally_generated=1" : "");
2044         }
2045 }
2046
2047
2048 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code,
2049                                  int locally_generated)
2050 {
2051         if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE ||
2052             !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
2053                 return 0; /* Not in 4-way handshake with PSK */
2054
2055         /*
2056          * It looks like connection was lost while trying to go through PSK
2057          * 4-way handshake. Filter out known disconnection cases that are caused
2058          * by something else than PSK mismatch to avoid confusing reports.
2059          */
2060
2061         if (locally_generated) {
2062                 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS)
2063                         return 0;
2064         }
2065
2066         return 1;
2067 }
2068
2069
2070 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s,
2071                                                  u16 reason_code,
2072                                                  int locally_generated)
2073 {
2074         const u8 *bssid;
2075         int authenticating;
2076         u8 prev_pending_bssid[ETH_ALEN];
2077         struct wpa_bss *fast_reconnect = NULL;
2078 #ifndef CONFIG_NO_SCAN_PROCESSING
2079         struct wpa_ssid *fast_reconnect_ssid = NULL;
2080 #endif /* CONFIG_NO_SCAN_PROCESSING */
2081         struct wpa_ssid *last_ssid;
2082
2083         authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
2084         os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
2085
2086         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2087                 /*
2088                  * At least Host AP driver and a Prism3 card seemed to be
2089                  * generating streams of disconnected events when configuring
2090                  * IBSS for WPA-None. Ignore them for now.
2091                  */
2092                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
2093                         "IBSS/WPA-None mode");
2094                 return;
2095         }
2096
2097         if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) {
2098                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
2099                         "pre-shared key may be incorrect");
2100                 if (wpas_p2p_4way_hs_failed(wpa_s) > 0)
2101                         return; /* P2P group removed */
2102                 wpas_auth_failed(wpa_s);
2103         }
2104         if (!wpa_s->disconnected &&
2105             (!wpa_s->auto_reconnect_disabled ||
2106              wpa_s->key_mgmt == WPA_KEY_MGMT_WPS)) {
2107                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
2108                         "reconnect (wps=%d wpa_state=%d)",
2109                         wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
2110                         wpa_s->wpa_state);
2111                 if (wpa_s->wpa_state == WPA_COMPLETED &&
2112                     wpa_s->current_ssid &&
2113                     wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
2114                     !locally_generated &&
2115                     disconnect_reason_recoverable(reason_code)) {
2116                         /*
2117                          * It looks like the AP has dropped association with
2118                          * us, but could allow us to get back in. Try to
2119                          * reconnect to the same BSS without full scan to save
2120                          * time for some common cases.
2121                          */
2122                         fast_reconnect = wpa_s->current_bss;
2123 #ifndef CONFIG_NO_SCAN_PROCESSING
2124                         fast_reconnect_ssid = wpa_s->current_ssid;
2125 #endif /* CONFIG_NO_SCAN_PROCESSING */
2126                 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
2127                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2128                 else
2129                         wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
2130                                 "immediate scan");
2131         } else {
2132                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
2133                         "try to re-connect");
2134                 wpa_s->reassociate = 0;
2135                 wpa_s->disconnected = 1;
2136                 wpa_supplicant_cancel_sched_scan(wpa_s);
2137         }
2138         bssid = wpa_s->bssid;
2139         if (is_zero_ether_addr(bssid))
2140                 bssid = wpa_s->pending_bssid;
2141         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2142                 wpas_connection_failed(wpa_s, bssid);
2143         wpa_sm_notify_disassoc(wpa_s->wpa);
2144         if (locally_generated)
2145                 wpa_s->disconnect_reason = -reason_code;
2146         else
2147                 wpa_s->disconnect_reason = reason_code;
2148         wpas_notify_disconnect_reason(wpa_s);
2149         if (wpa_supplicant_dynamic_keys(wpa_s)) {
2150                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
2151                 wpa_clear_keys(wpa_s, wpa_s->bssid);
2152         }
2153         last_ssid = wpa_s->current_ssid;
2154         wpa_supplicant_mark_disassoc(wpa_s);
2155
2156         if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
2157                 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
2158                 wpa_s->current_ssid = last_ssid;
2159         }
2160
2161         if (fast_reconnect) {
2162 #ifndef CONFIG_NO_SCAN_PROCESSING
2163                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
2164                 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
2165                                            fast_reconnect_ssid) < 0) {
2166                         /* Recover through full scan */
2167                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2168                 }
2169 #endif /* CONFIG_NO_SCAN_PROCESSING */
2170         }
2171 }
2172
2173
2174 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2175 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
2176 {
2177         struct wpa_supplicant *wpa_s = eloop_ctx;
2178
2179         if (!wpa_s->pending_mic_error_report)
2180                 return;
2181
2182         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
2183         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
2184         wpa_s->pending_mic_error_report = 0;
2185 }
2186 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2187
2188
2189 static void
2190 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
2191                                          union wpa_event_data *data)
2192 {
2193         int pairwise;
2194         struct os_reltime t;
2195
2196         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
2197         pairwise = (data && data->michael_mic_failure.unicast);
2198         os_get_reltime(&t);
2199         if ((wpa_s->last_michael_mic_error.sec &&
2200              !os_reltime_expired(&t, &wpa_s->last_michael_mic_error, 60)) ||
2201             wpa_s->pending_mic_error_report) {
2202                 if (wpa_s->pending_mic_error_report) {
2203                         /*
2204                          * Send the pending MIC error report immediately since
2205                          * we are going to start countermeasures and AP better
2206                          * do the same.
2207                          */
2208                         wpa_sm_key_request(wpa_s->wpa, 1,
2209                                            wpa_s->pending_mic_error_pairwise);
2210                 }
2211
2212                 /* Send the new MIC error report immediately since we are going
2213                  * to start countermeasures and AP better do the same.
2214                  */
2215                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2216
2217                 /* initialize countermeasures */
2218                 wpa_s->countermeasures = 1;
2219
2220                 wpa_blacklist_add(wpa_s, wpa_s->bssid);
2221
2222                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
2223
2224                 /*
2225                  * Need to wait for completion of request frame. We do not get
2226                  * any callback for the message completion, so just wait a
2227                  * short while and hope for the best. */
2228                 os_sleep(0, 10000);
2229
2230                 wpa_drv_set_countermeasures(wpa_s, 1);
2231                 wpa_supplicant_deauthenticate(wpa_s,
2232                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
2233                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
2234                                      wpa_s, NULL);
2235                 eloop_register_timeout(60, 0,
2236                                        wpa_supplicant_stop_countermeasures,
2237                                        wpa_s, NULL);
2238                 /* TODO: mark the AP rejected for 60 second. STA is
2239                  * allowed to associate with another AP.. */
2240         } else {
2241 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2242                 if (wpa_s->mic_errors_seen) {
2243                         /*
2244                          * Reduce the effectiveness of Michael MIC error
2245                          * reports as a means for attacking against TKIP if
2246                          * more than one MIC failure is noticed with the same
2247                          * PTK. We delay the transmission of the reports by a
2248                          * random time between 0 and 60 seconds in order to
2249                          * force the attacker wait 60 seconds before getting
2250                          * the information on whether a frame resulted in a MIC
2251                          * failure.
2252                          */
2253                         u8 rval[4];
2254                         int sec;
2255
2256                         if (os_get_random(rval, sizeof(rval)) < 0)
2257                                 sec = os_random() % 60;
2258                         else
2259                                 sec = WPA_GET_BE32(rval) % 60;
2260                         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
2261                                 "report %d seconds", sec);
2262                         wpa_s->pending_mic_error_report = 1;
2263                         wpa_s->pending_mic_error_pairwise = pairwise;
2264                         eloop_cancel_timeout(
2265                                 wpa_supplicant_delayed_mic_error_report,
2266                                 wpa_s, NULL);
2267                         eloop_register_timeout(
2268                                 sec, os_random() % 1000000,
2269                                 wpa_supplicant_delayed_mic_error_report,
2270                                 wpa_s, NULL);
2271                 } else {
2272                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2273                 }
2274 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2275                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2276 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2277         }
2278         wpa_s->last_michael_mic_error = t;
2279         wpa_s->mic_errors_seen++;
2280 }
2281
2282
2283 #ifdef CONFIG_TERMINATE_ONLASTIF
2284 static int any_interfaces(struct wpa_supplicant *head)
2285 {
2286         struct wpa_supplicant *wpa_s;
2287
2288         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
2289                 if (!wpa_s->interface_removed)
2290                         return 1;
2291         return 0;
2292 }
2293 #endif /* CONFIG_TERMINATE_ONLASTIF */
2294
2295
2296 static void
2297 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
2298                                       union wpa_event_data *data)
2299 {
2300         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
2301                 return;
2302
2303         switch (data->interface_status.ievent) {
2304         case EVENT_INTERFACE_ADDED:
2305                 if (!wpa_s->interface_removed)
2306                         break;
2307                 wpa_s->interface_removed = 0;
2308                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
2309                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
2310                         wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
2311                                 "driver after interface was added");
2312                 }
2313                 break;
2314         case EVENT_INTERFACE_REMOVED:
2315                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
2316                 wpa_s->interface_removed = 1;
2317                 wpa_supplicant_mark_disassoc(wpa_s);
2318                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2319                 l2_packet_deinit(wpa_s->l2);
2320                 wpa_s->l2 = NULL;
2321 #ifdef CONFIG_IBSS_RSN
2322                 ibss_rsn_deinit(wpa_s->ibss_rsn);
2323                 wpa_s->ibss_rsn = NULL;
2324 #endif /* CONFIG_IBSS_RSN */
2325 #ifdef CONFIG_TERMINATE_ONLASTIF
2326                 /* check if last interface */
2327                 if (!any_interfaces(wpa_s->global->ifaces))
2328                         eloop_terminate();
2329 #endif /* CONFIG_TERMINATE_ONLASTIF */
2330                 break;
2331         }
2332 }
2333
2334
2335 #ifdef CONFIG_PEERKEY
2336 static void
2337 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
2338                               union wpa_event_data *data)
2339 {
2340         if (data == NULL)
2341                 return;
2342         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
2343 }
2344 #endif /* CONFIG_PEERKEY */
2345
2346
2347 #ifdef CONFIG_TDLS
2348 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
2349                                       union wpa_event_data *data)
2350 {
2351         if (data == NULL)
2352                 return;
2353         switch (data->tdls.oper) {
2354         case TDLS_REQUEST_SETUP:
2355                 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer);
2356                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2357                         wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
2358                 else
2359                         wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer);
2360                 break;
2361         case TDLS_REQUEST_TEARDOWN:
2362                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2363                         wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer,
2364                                                data->tdls.reason_code);
2365                 else
2366                         wpa_drv_tdls_oper(wpa_s, TDLS_TEARDOWN,
2367                                           data->tdls.peer);
2368                 break;
2369         }
2370 }
2371 #endif /* CONFIG_TDLS */
2372
2373
2374 #ifdef CONFIG_WNM
2375 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
2376                                      union wpa_event_data *data)
2377 {
2378         if (data == NULL)
2379                 return;
2380         switch (data->wnm.oper) {
2381         case WNM_OPER_SLEEP:
2382                 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
2383                            "(action=%d, intval=%d)",
2384                            data->wnm.sleep_action, data->wnm.sleep_intval);
2385                 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
2386                                              data->wnm.sleep_intval, NULL);
2387                 break;
2388         }
2389 }
2390 #endif /* CONFIG_WNM */
2391
2392
2393 #ifdef CONFIG_IEEE80211R
2394 static void
2395 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
2396                                  union wpa_event_data *data)
2397 {
2398         if (data == NULL)
2399                 return;
2400
2401         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
2402                                     data->ft_ies.ies_len,
2403                                     data->ft_ies.ft_action,
2404                                     data->ft_ies.target_ap,
2405                                     data->ft_ies.ric_ies,
2406                                     data->ft_ies.ric_ies_len) < 0) {
2407                 /* TODO: prevent MLME/driver from trying to associate? */
2408         }
2409 }
2410 #endif /* CONFIG_IEEE80211R */
2411
2412
2413 #ifdef CONFIG_IBSS_RSN
2414 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
2415                                                 union wpa_event_data *data)
2416 {
2417         struct wpa_ssid *ssid;
2418         if (wpa_s->wpa_state < WPA_ASSOCIATED)
2419                 return;
2420         if (data == NULL)
2421                 return;
2422         ssid = wpa_s->current_ssid;
2423         if (ssid == NULL)
2424                 return;
2425         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2426                 return;
2427
2428         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
2429 }
2430
2431
2432 static void wpa_supplicant_event_ibss_auth(struct wpa_supplicant *wpa_s,
2433                                            union wpa_event_data *data)
2434 {
2435         struct wpa_ssid *ssid = wpa_s->current_ssid;
2436
2437         if (ssid == NULL)
2438                 return;
2439
2440         /* check if the ssid is correctly configured as IBSS/RSN */
2441         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2442                 return;
2443
2444         ibss_rsn_handle_auth(wpa_s->ibss_rsn, data->rx_mgmt.frame,
2445                              data->rx_mgmt.frame_len);
2446 }
2447 #endif /* CONFIG_IBSS_RSN */
2448
2449
2450 #ifdef CONFIG_IEEE80211R
2451 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
2452                          size_t len)
2453 {
2454         const u8 *sta_addr, *target_ap_addr;
2455         u16 status;
2456
2457         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
2458         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
2459                 return; /* only SME case supported for now */
2460         if (len < 1 + 2 * ETH_ALEN + 2)
2461                 return;
2462         if (data[0] != 2)
2463                 return; /* Only FT Action Response is supported for now */
2464         sta_addr = data + 1;
2465         target_ap_addr = data + 1 + ETH_ALEN;
2466         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
2467         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
2468                 MACSTR " TargetAP " MACSTR " status %u",
2469                 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
2470
2471         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
2472                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
2473                         " in FT Action Response", MAC2STR(sta_addr));
2474                 return;
2475         }
2476
2477         if (status) {
2478                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
2479                         "failure (status code %d)", status);
2480                 /* TODO: report error to FT code(?) */
2481                 return;
2482         }
2483
2484         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
2485                                     len - (1 + 2 * ETH_ALEN + 2), 1,
2486                                     target_ap_addr, NULL, 0) < 0)
2487                 return;
2488
2489 #ifdef CONFIG_SME
2490         {
2491                 struct wpa_bss *bss;
2492                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
2493                 if (bss)
2494                         wpa_s->sme.freq = bss->freq;
2495                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
2496                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
2497                               WLAN_AUTH_FT);
2498         }
2499 #endif /* CONFIG_SME */
2500 }
2501 #endif /* CONFIG_IEEE80211R */
2502
2503
2504 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
2505                                                struct unprot_deauth *e)
2506 {
2507 #ifdef CONFIG_IEEE80211W
2508         wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
2509                    "dropped: " MACSTR " -> " MACSTR
2510                    " (reason code %u)",
2511                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2512         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2513 #endif /* CONFIG_IEEE80211W */
2514 }
2515
2516
2517 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
2518                                                  struct unprot_disassoc *e)
2519 {
2520 #ifdef CONFIG_IEEE80211W
2521         wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
2522                    "dropped: " MACSTR " -> " MACSTR
2523                    " (reason code %u)",
2524                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2525         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2526 #endif /* CONFIG_IEEE80211W */
2527 }
2528
2529
2530 static void wpas_event_disconnect(struct wpa_supplicant *wpa_s, const u8 *addr,
2531                                   u16 reason_code, int locally_generated,
2532                                   const u8 *ie, size_t ie_len, int deauth)
2533 {
2534 #ifdef CONFIG_AP
2535         if (wpa_s->ap_iface && addr) {
2536                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], addr);
2537                 return;
2538         }
2539
2540         if (wpa_s->ap_iface) {
2541                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in AP mode");
2542                 return;
2543         }
2544 #endif /* CONFIG_AP */
2545
2546         wpa_supplicant_event_disassoc(wpa_s, reason_code, locally_generated);
2547
2548         if (((reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
2549               ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
2550                 (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
2551                eapol_sm_failed(wpa_s->eapol))) &&
2552              !wpa_s->eap_expected_failure))
2553                 wpas_auth_failed(wpa_s);
2554
2555 #ifdef CONFIG_P2P
2556         if (deauth && reason_code > 0) {
2557                 if (wpas_p2p_deauth_notif(wpa_s, addr, reason_code, ie, ie_len,
2558                                           locally_generated) > 0) {
2559                         /*
2560                          * The interface was removed, so cannot continue
2561                          * processing any additional operations after this.
2562                          */
2563                         return;
2564                 }
2565         }
2566 #endif /* CONFIG_P2P */
2567
2568         wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
2569                                              locally_generated);
2570 }
2571
2572
2573 static void wpas_event_disassoc(struct wpa_supplicant *wpa_s,
2574                                 struct disassoc_info *info)
2575 {
2576         u16 reason_code = 0;
2577         int locally_generated = 0;
2578         const u8 *addr = NULL;
2579         const u8 *ie = NULL;
2580         size_t ie_len = 0;
2581
2582         wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
2583
2584         if (info) {
2585                 addr = info->addr;
2586                 ie = info->ie;
2587                 ie_len = info->ie_len;
2588                 reason_code = info->reason_code;
2589                 locally_generated = info->locally_generated;
2590                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", reason_code,
2591                         locally_generated ? " (locally generated)" : "");
2592                 if (addr)
2593                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2594                                 MAC2STR(addr));
2595                 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
2596                             ie, ie_len);
2597         }
2598
2599 #ifdef CONFIG_AP
2600         if (wpa_s->ap_iface && info && info->addr) {
2601                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], info->addr);
2602                 return;
2603         }
2604
2605         if (wpa_s->ap_iface) {
2606                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in AP mode");
2607                 return;
2608         }
2609 #endif /* CONFIG_AP */
2610
2611 #ifdef CONFIG_P2P
2612         if (info) {
2613                 wpas_p2p_disassoc_notif(
2614                         wpa_s, info->addr, reason_code, info->ie, info->ie_len,
2615                         locally_generated);
2616         }
2617 #endif /* CONFIG_P2P */
2618
2619         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2620                 sme_event_disassoc(wpa_s, info);
2621
2622         wpas_event_disconnect(wpa_s, addr, reason_code, locally_generated,
2623                               ie, ie_len, 0);
2624 }
2625
2626
2627 static void wpas_event_deauth(struct wpa_supplicant *wpa_s,
2628                               struct deauth_info *info)
2629 {
2630         u16 reason_code = 0;
2631         int locally_generated = 0;
2632         const u8 *addr = NULL;
2633         const u8 *ie = NULL;
2634         size_t ie_len = 0;
2635
2636         wpa_dbg(wpa_s, MSG_DEBUG, "Deauthentication notification");
2637
2638         if (info) {
2639                 addr = info->addr;
2640                 ie = info->ie;
2641                 ie_len = info->ie_len;
2642                 reason_code = info->reason_code;
2643                 locally_generated = info->locally_generated;
2644                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2645                         reason_code,
2646                         locally_generated ? " (locally generated)" : "");
2647                 if (addr) {
2648                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2649                                 MAC2STR(addr));
2650                 }
2651                 wpa_hexdump(MSG_DEBUG, "Deauthentication frame IE(s)",
2652                             ie, ie_len);
2653         }
2654
2655         wpa_reset_ft_completed(wpa_s->wpa);
2656
2657         wpas_event_disconnect(wpa_s, addr, reason_code,
2658                               locally_generated, ie, ie_len, 1);
2659 }
2660
2661
2662 static void wpa_supplicant_update_channel_list(struct wpa_supplicant *wpa_s)
2663 {
2664         struct wpa_supplicant *ifs;
2665
2666         if (wpa_s->drv_priv == NULL)
2667                 return; /* Ignore event during drv initialization */
2668
2669         free_hw_features(wpa_s);
2670         wpa_s->hw.modes = wpa_drv_get_hw_feature_data(
2671                 wpa_s, &wpa_s->hw.num_modes, &wpa_s->hw.flags);
2672
2673 #ifdef CONFIG_P2P
2674         wpas_p2p_update_channel_list(wpa_s);
2675 #endif /* CONFIG_P2P */
2676
2677         /*
2678          * Check other interfaces to see if they share the same radio. If
2679          * so, they get updated with this same hw mode info.
2680          */
2681         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
2682                          radio_list) {
2683                 if (ifs != wpa_s) {
2684                         wpa_printf(MSG_DEBUG, "%s: Updating hw mode",
2685                                    ifs->ifname);
2686                         free_hw_features(ifs);
2687                         ifs->hw.modes = wpa_drv_get_hw_feature_data(
2688                                 ifs, &ifs->hw.num_modes, &ifs->hw.flags);
2689                 }
2690         }
2691 }
2692
2693
2694 static void wpas_event_rx_mgmt_action(struct wpa_supplicant *wpa_s,
2695                                       const struct ieee80211_mgmt *mgmt,
2696                                       size_t len, int freq)
2697 {
2698         const u8 *payload;
2699         size_t plen;
2700         u8 category;
2701
2702         if (len < IEEE80211_HDRLEN + 2)
2703                 return;
2704
2705         payload = &mgmt->u.action.category;
2706         category = *payload++;
2707         plen = (((const u8 *) mgmt) + len) - payload;
2708
2709         wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
2710                 " Category=%u DataLen=%d freq=%d MHz",
2711                 MAC2STR(mgmt->sa), category, (int) plen, freq);
2712
2713 #ifdef CONFIG_IEEE80211R
2714         if (category == WLAN_ACTION_FT) {
2715                 ft_rx_action(wpa_s, payload, plen);
2716                 return;
2717         }
2718 #endif /* CONFIG_IEEE80211R */
2719
2720 #ifdef CONFIG_IEEE80211W
2721 #ifdef CONFIG_SME
2722         if (category == WLAN_ACTION_SA_QUERY) {
2723                 sme_sa_query_rx(wpa_s, mgmt->sa, payload, plen);
2724                 return;
2725         }
2726 #endif /* CONFIG_SME */
2727 #endif /* CONFIG_IEEE80211W */
2728
2729 #ifdef CONFIG_WNM
2730         if (mgmt->u.action.category == WLAN_ACTION_WNM) {
2731                 ieee802_11_rx_wnm_action(wpa_s, mgmt, len);
2732                 return;
2733         }
2734 #endif /* CONFIG_WNM */
2735
2736 #ifdef CONFIG_GAS
2737         if ((mgmt->u.action.category == WLAN_ACTION_PUBLIC ||
2738              mgmt->u.action.category == WLAN_ACTION_PROTECTED_DUAL) &&
2739             gas_query_rx(wpa_s->gas, mgmt->da, mgmt->sa, mgmt->bssid,
2740                          mgmt->u.action.category,
2741                          payload, plen, freq) == 0)
2742                 return;
2743 #endif /* CONFIG_GAS */
2744
2745 #ifdef CONFIG_TDLS
2746         if (category == WLAN_ACTION_PUBLIC && plen >= 4 &&
2747             payload[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
2748                 wpa_dbg(wpa_s, MSG_DEBUG,
2749                         "TDLS: Received Discovery Response from " MACSTR,
2750                         MAC2STR(mgmt->sa));
2751                 return;
2752         }
2753 #endif /* CONFIG_TDLS */
2754
2755 #ifdef CONFIG_INTERWORKING
2756         if (category == WLAN_ACTION_QOS && plen >= 1 &&
2757             payload[0] == QOS_QOS_MAP_CONFIG) {
2758                 const u8 *pos = payload + 1;
2759                 size_t qlen = plen - 1;
2760                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: Received QoS Map Configure frame from "
2761                         MACSTR, MAC2STR(mgmt->sa));
2762                 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) == 0 &&
2763                     qlen > 2 && pos[0] == WLAN_EID_QOS_MAP_SET &&
2764                     pos[1] <= qlen - 2 && pos[1] >= 16)
2765                         wpas_qos_map_set(wpa_s, pos + 2, pos[1]);
2766                 return;
2767         }
2768 #endif /* CONFIG_INTERWORKING */
2769
2770 #ifdef CONFIG_P2P
2771         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
2772                            category, payload, plen, freq);
2773 #endif /* CONFIG_P2P */
2774 }
2775
2776
2777 static void wpa_supplicant_notify_avoid_freq(struct wpa_supplicant *wpa_s,
2778                                              union wpa_event_data *event)
2779 {
2780 #ifdef CONFIG_P2P
2781         struct wpa_supplicant *ifs;
2782 #endif /* CONFIG_P2P */
2783         struct wpa_freq_range_list *list;
2784         char *str = NULL;
2785
2786         list = &event->freq_range;
2787
2788         if (list->num)
2789                 str = freq_range_list_str(list);
2790         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AVOID_FREQ "ranges=%s",
2791                 str ? str : "");
2792
2793 #ifdef CONFIG_P2P
2794         if (freq_range_list_parse(&wpa_s->global->p2p_go_avoid_freq, str)) {
2795                 wpa_dbg(wpa_s, MSG_ERROR, "%s: Failed to parse freq range",
2796                         __func__);
2797         } else {
2798                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Update channel list based on frequency avoid event");
2799                 wpas_p2p_update_channel_list(wpa_s);
2800         }
2801
2802         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
2803                 int freq;
2804                 if (!ifs->current_ssid ||
2805                     !ifs->current_ssid->p2p_group ||
2806                     (ifs->current_ssid->mode != WPAS_MODE_P2P_GO &&
2807                      ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION))
2808                         continue;
2809
2810                 freq = ifs->current_ssid->frequency;
2811                 if (!freq_range_list_includes(list, freq)) {
2812                         wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating frequency %d MHz in safe range",
2813                                 freq);
2814                         continue;
2815                 }
2816
2817                 wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating in unsafe frequency %d MHz",
2818                         freq);
2819                 /* TODO: Consider using CSA or removing the group within
2820                  * wpa_supplicant */
2821                 wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
2822         }
2823 #endif /* CONFIG_P2P */
2824
2825         os_free(str);
2826 }
2827
2828
2829 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
2830                           union wpa_event_data *data)
2831 {
2832         struct wpa_supplicant *wpa_s = ctx;
2833
2834         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
2835             event != EVENT_INTERFACE_ENABLED &&
2836             event != EVENT_INTERFACE_STATUS &&
2837             event != EVENT_SCHED_SCAN_STOPPED) {
2838                 wpa_dbg(wpa_s, MSG_DEBUG,
2839                         "Ignore event %s (%d) while interface is disabled",
2840                         event_to_string(event), event);
2841                 return;
2842         }
2843
2844 #ifndef CONFIG_NO_STDOUT_DEBUG
2845 {
2846         int level = MSG_DEBUG;
2847
2848         if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
2849                 const struct ieee80211_hdr *hdr;
2850                 u16 fc;
2851                 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
2852                 fc = le_to_host16(hdr->frame_control);
2853                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2854                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
2855                         level = MSG_EXCESSIVE;
2856         }
2857
2858         wpa_dbg(wpa_s, level, "Event %s (%d) received",
2859                 event_to_string(event), event);
2860 }
2861 #endif /* CONFIG_NO_STDOUT_DEBUG */
2862
2863         switch (event) {
2864         case EVENT_AUTH:
2865                 sme_event_auth(wpa_s, data);
2866                 break;
2867         case EVENT_ASSOC:
2868                 wpa_supplicant_event_assoc(wpa_s, data);
2869                 break;
2870         case EVENT_DISASSOC:
2871                 wpas_event_disassoc(wpa_s,
2872                                     data ? &data->disassoc_info : NULL);
2873                 break;
2874         case EVENT_DEAUTH:
2875                 wpas_event_deauth(wpa_s,
2876                                   data ? &data->deauth_info : NULL);
2877                 break;
2878         case EVENT_MICHAEL_MIC_FAILURE:
2879                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
2880                 break;
2881 #ifndef CONFIG_NO_SCAN_PROCESSING
2882         case EVENT_SCAN_STARTED:
2883                 os_get_reltime(&wpa_s->scan_start_time);
2884                 if (wpa_s->own_scan_requested) {
2885                         struct os_reltime diff;
2886
2887                         os_reltime_sub(&wpa_s->scan_start_time,
2888                                        &wpa_s->scan_trigger_time, &diff);
2889                         wpa_dbg(wpa_s, MSG_DEBUG, "Own scan request started a scan in %ld.%06ld seconds",
2890                                 diff.sec, diff.usec);
2891                         wpa_s->own_scan_requested = 0;
2892                         wpa_s->own_scan_running = 1;
2893                         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
2894                             wpa_s->manual_scan_use_id) {
2895                                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED "id=%u",
2896                                         wpa_s->manual_scan_id);
2897                         } else {
2898                                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
2899                         }
2900                 } else {
2901                         wpa_dbg(wpa_s, MSG_DEBUG, "External program started a scan");
2902                         wpa_s->external_scan_running = 1;
2903                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
2904                 }
2905                 break;
2906         case EVENT_SCAN_RESULTS:
2907                 if (os_reltime_initialized(&wpa_s->scan_start_time)) {
2908                         struct os_reltime now, diff;
2909                         os_get_reltime(&now);
2910                         os_reltime_sub(&now, &wpa_s->scan_start_time, &diff);
2911                         wpa_s->scan_start_time.sec = 0;
2912                         wpa_s->scan_start_time.usec = 0;
2913                         wpa_dbg(wpa_s, MSG_DEBUG, "Scan completed in %ld.%06ld seconds",
2914                                 diff.sec, diff.usec);
2915                 }
2916                 wpa_supplicant_event_scan_results(wpa_s, data);
2917                 wpa_s->own_scan_running = 0;
2918                 wpa_s->external_scan_running = 0;
2919                 radio_work_check_next(wpa_s);
2920                 break;
2921 #endif /* CONFIG_NO_SCAN_PROCESSING */
2922         case EVENT_ASSOCINFO:
2923                 wpa_supplicant_event_associnfo(wpa_s, data);
2924                 break;
2925         case EVENT_INTERFACE_STATUS:
2926                 wpa_supplicant_event_interface_status(wpa_s, data);
2927                 break;
2928         case EVENT_PMKID_CANDIDATE:
2929                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
2930                 break;
2931 #ifdef CONFIG_PEERKEY
2932         case EVENT_STKSTART:
2933                 wpa_supplicant_event_stkstart(wpa_s, data);
2934                 break;
2935 #endif /* CONFIG_PEERKEY */
2936 #ifdef CONFIG_TDLS
2937         case EVENT_TDLS:
2938                 wpa_supplicant_event_tdls(wpa_s, data);
2939                 break;
2940 #endif /* CONFIG_TDLS */
2941 #ifdef CONFIG_WNM
2942         case EVENT_WNM:
2943                 wpa_supplicant_event_wnm(wpa_s, data);
2944                 break;
2945 #endif /* CONFIG_WNM */
2946 #ifdef CONFIG_IEEE80211R
2947         case EVENT_FT_RESPONSE:
2948                 wpa_supplicant_event_ft_response(wpa_s, data);
2949                 break;
2950 #endif /* CONFIG_IEEE80211R */
2951 #ifdef CONFIG_IBSS_RSN
2952         case EVENT_IBSS_RSN_START:
2953                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
2954                 break;
2955 #endif /* CONFIG_IBSS_RSN */
2956         case EVENT_ASSOC_REJECT:
2957                 if (data->assoc_reject.bssid)
2958                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
2959                                 "bssid=" MACSTR " status_code=%u",
2960                                 MAC2STR(data->assoc_reject.bssid),
2961                                 data->assoc_reject.status_code);
2962                 else
2963                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
2964                                 "status_code=%u",
2965                                 data->assoc_reject.status_code);
2966                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2967                         sme_event_assoc_reject(wpa_s, data);
2968                 else {
2969                         const u8 *bssid = data->assoc_reject.bssid;
2970                         if (bssid == NULL || is_zero_ether_addr(bssid))
2971                                 bssid = wpa_s->pending_bssid;
2972                         wpas_connection_failed(wpa_s, bssid);
2973                         wpa_supplicant_mark_disassoc(wpa_s);
2974                 }
2975                 break;
2976         case EVENT_AUTH_TIMED_OUT:
2977                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2978                         sme_event_auth_timed_out(wpa_s, data);
2979                 break;
2980         case EVENT_ASSOC_TIMED_OUT:
2981                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2982                         sme_event_assoc_timed_out(wpa_s, data);
2983                 break;
2984         case EVENT_TX_STATUS:
2985                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
2986                         " type=%d stype=%d",
2987                         MAC2STR(data->tx_status.dst),
2988                         data->tx_status.type, data->tx_status.stype);
2989 #ifdef CONFIG_AP
2990                 if (wpa_s->ap_iface == NULL) {
2991 #ifdef CONFIG_OFFCHANNEL
2992                         if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
2993                             data->tx_status.stype == WLAN_FC_STYPE_ACTION)
2994                                 offchannel_send_action_tx_status(
2995                                         wpa_s, data->tx_status.dst,
2996                                         data->tx_status.data,
2997                                         data->tx_status.data_len,
2998                                         data->tx_status.ack ?
2999                                         OFFCHANNEL_SEND_ACTION_SUCCESS :
3000                                         OFFCHANNEL_SEND_ACTION_NO_ACK);
3001 #endif /* CONFIG_OFFCHANNEL */
3002                         break;
3003                 }
3004 #endif /* CONFIG_AP */
3005 #ifdef CONFIG_OFFCHANNEL
3006                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
3007                         MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
3008                 /*
3009                  * Catch TX status events for Action frames we sent via group
3010                  * interface in GO mode.
3011                  */
3012                 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3013                     data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
3014                     os_memcmp(wpa_s->parent->pending_action_dst,
3015                               data->tx_status.dst, ETH_ALEN) == 0) {
3016                         offchannel_send_action_tx_status(
3017                                 wpa_s->parent, data->tx_status.dst,
3018                                 data->tx_status.data,
3019                                 data->tx_status.data_len,
3020                                 data->tx_status.ack ?
3021                                 OFFCHANNEL_SEND_ACTION_SUCCESS :
3022                                 OFFCHANNEL_SEND_ACTION_NO_ACK);
3023                         break;
3024                 }
3025 #endif /* CONFIG_OFFCHANNEL */
3026 #ifdef CONFIG_AP
3027                 switch (data->tx_status.type) {
3028                 case WLAN_FC_TYPE_MGMT:
3029                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
3030                                       data->tx_status.data_len,
3031                                       data->tx_status.stype,
3032                                       data->tx_status.ack);
3033                         break;
3034                 case WLAN_FC_TYPE_DATA:
3035                         ap_tx_status(wpa_s, data->tx_status.dst,
3036                                      data->tx_status.data,
3037                                      data->tx_status.data_len,
3038                                      data->tx_status.ack);
3039                         break;
3040                 }
3041 #endif /* CONFIG_AP */
3042                 break;
3043 #ifdef CONFIG_AP
3044         case EVENT_EAPOL_TX_STATUS:
3045                 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
3046                                    data->eapol_tx_status.data,
3047                                    data->eapol_tx_status.data_len,
3048                                    data->eapol_tx_status.ack);
3049                 break;
3050         case EVENT_DRIVER_CLIENT_POLL_OK:
3051                 ap_client_poll_ok(wpa_s, data->client_poll.addr);
3052                 break;
3053         case EVENT_RX_FROM_UNKNOWN:
3054                 if (wpa_s->ap_iface == NULL)
3055                         break;
3056                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
3057                                        data->rx_from_unknown.wds);
3058                 break;
3059         case EVENT_CH_SWITCH:
3060                 if (!data)
3061                         break;
3062                 if (!wpa_s->ap_iface) {
3063                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: Ignore channel switch "
3064                                 "event in non-AP mode");
3065                         break;
3066                 }
3067
3068                 wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
3069                                   data->ch_switch.ht_enabled,
3070                                   data->ch_switch.ch_offset,
3071                                   data->ch_switch.ch_width,
3072                                   data->ch_switch.cf1,
3073                                   data->ch_switch.cf2);
3074                 break;
3075 #endif /* CONFIG_AP */
3076         case EVENT_RX_MGMT: {
3077                 u16 fc, stype;
3078                 const struct ieee80211_mgmt *mgmt;
3079
3080                 mgmt = (const struct ieee80211_mgmt *)
3081                         data->rx_mgmt.frame;
3082                 fc = le_to_host16(mgmt->frame_control);
3083                 stype = WLAN_FC_GET_STYPE(fc);
3084
3085 #ifdef CONFIG_AP
3086                 if (wpa_s->ap_iface == NULL) {
3087 #endif /* CONFIG_AP */
3088 #ifdef CONFIG_P2P
3089                         if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3090                             data->rx_mgmt.frame_len > 24) {
3091                                 const u8 *src = mgmt->sa;
3092                                 const u8 *ie = mgmt->u.probe_req.variable;
3093                                 size_t ie_len = data->rx_mgmt.frame_len -
3094                                         (mgmt->u.probe_req.variable -
3095                                          data->rx_mgmt.frame);
3096                                 wpas_p2p_probe_req_rx(
3097                                         wpa_s, src, mgmt->da,
3098                                         mgmt->bssid, ie, ie_len,
3099                                         data->rx_mgmt.ssi_signal);
3100                                 break;
3101                         }
3102 #endif /* CONFIG_P2P */
3103 #ifdef CONFIG_IBSS_RSN
3104                         if (stype == WLAN_FC_STYPE_AUTH &&
3105                             data->rx_mgmt.frame_len >= 30) {
3106                                 wpa_supplicant_event_ibss_auth(wpa_s, data);
3107                                 break;
3108                         }
3109 #endif /* CONFIG_IBSS_RSN */
3110
3111                         if (stype == WLAN_FC_STYPE_ACTION) {
3112                                 wpas_event_rx_mgmt_action(
3113                                         wpa_s, mgmt, data->rx_mgmt.frame_len,
3114                                         data->rx_mgmt.freq);
3115                                 break;
3116                         }
3117
3118                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
3119                                 "management frame in non-AP mode");
3120                         break;
3121 #ifdef CONFIG_AP
3122                 }
3123
3124                 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3125                     data->rx_mgmt.frame_len > 24) {
3126                         const u8 *ie = mgmt->u.probe_req.variable;
3127                         size_t ie_len = data->rx_mgmt.frame_len -
3128                                 (mgmt->u.probe_req.variable -
3129                                  data->rx_mgmt.frame);
3130
3131                         wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
3132                                          mgmt->bssid, ie, ie_len,
3133                                          data->rx_mgmt.ssi_signal);
3134                 }
3135
3136                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
3137 #endif /* CONFIG_AP */
3138                 break;
3139                 }
3140         case EVENT_RX_PROBE_REQ:
3141                 if (data->rx_probe_req.sa == NULL ||
3142                     data->rx_probe_req.ie == NULL)
3143                         break;
3144 #ifdef CONFIG_AP
3145                 if (wpa_s->ap_iface) {
3146                         hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
3147                                              data->rx_probe_req.sa,
3148                                              data->rx_probe_req.da,
3149                                              data->rx_probe_req.bssid,
3150                                              data->rx_probe_req.ie,
3151                                              data->rx_probe_req.ie_len,
3152                                              data->rx_probe_req.ssi_signal);
3153                         break;
3154                 }
3155 #endif /* CONFIG_AP */
3156 #ifdef CONFIG_P2P
3157                 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
3158                                       data->rx_probe_req.da,
3159                                       data->rx_probe_req.bssid,
3160                                       data->rx_probe_req.ie,
3161                                       data->rx_probe_req.ie_len,
3162                                       data->rx_probe_req.ssi_signal);
3163 #endif /* CONFIG_P2P */
3164                 break;
3165         case EVENT_REMAIN_ON_CHANNEL:
3166 #ifdef CONFIG_OFFCHANNEL
3167                 offchannel_remain_on_channel_cb(
3168                         wpa_s, data->remain_on_channel.freq,
3169                         data->remain_on_channel.duration);
3170 #endif /* CONFIG_OFFCHANNEL */
3171 #ifdef CONFIG_P2P
3172                 wpas_p2p_remain_on_channel_cb(
3173                         wpa_s, data->remain_on_channel.freq,
3174                         data->remain_on_channel.duration);
3175 #endif /* CONFIG_P2P */
3176                 break;
3177         case EVENT_CANCEL_REMAIN_ON_CHANNEL:
3178 #ifdef CONFIG_OFFCHANNEL
3179                 offchannel_cancel_remain_on_channel_cb(
3180                         wpa_s, data->remain_on_channel.freq);
3181 #endif /* CONFIG_OFFCHANNEL */
3182 #ifdef CONFIG_P2P
3183                 wpas_p2p_cancel_remain_on_channel_cb(
3184                         wpa_s, data->remain_on_channel.freq);
3185 #endif /* CONFIG_P2P */
3186                 break;
3187         case EVENT_EAPOL_RX:
3188                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
3189                                         data->eapol_rx.data,
3190                                         data->eapol_rx.data_len);
3191                 break;
3192         case EVENT_SIGNAL_CHANGE:
3193                 bgscan_notify_signal_change(
3194                         wpa_s, data->signal_change.above_threshold,
3195                         data->signal_change.current_signal,
3196                         data->signal_change.current_noise,
3197                         data->signal_change.current_txrate);
3198                 break;
3199         case EVENT_INTERFACE_ENABLED:
3200                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
3201                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
3202                         wpa_supplicant_update_mac_addr(wpa_s);
3203 #ifdef CONFIG_AP
3204                         if (!wpa_s->ap_iface) {
3205                                 wpa_supplicant_set_state(wpa_s,
3206                                                          WPA_DISCONNECTED);
3207                                 wpa_supplicant_req_scan(wpa_s, 0, 0);
3208                         } else
3209                                 wpa_supplicant_set_state(wpa_s,
3210                                                          WPA_COMPLETED);
3211 #else /* CONFIG_AP */
3212                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
3213                         wpa_supplicant_req_scan(wpa_s, 0, 0);
3214 #endif /* CONFIG_AP */
3215                 }
3216                 break;
3217         case EVENT_INTERFACE_DISABLED:
3218                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
3219 #ifdef CONFIG_P2P
3220                 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
3221                     (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group &&
3222                      wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)) {
3223                         /*
3224                          * The interface was externally disabled. Remove
3225                          * it assuming an external entity will start a
3226                          * new session if needed.
3227                          */
3228                         wpas_p2p_disconnect(wpa_s);
3229                         break;
3230                 }
3231 #endif /* CONFIG_P2P */
3232
3233                 wpa_supplicant_mark_disassoc(wpa_s);
3234                 radio_remove_works(wpa_s, NULL, 0);
3235
3236                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3237                 break;
3238         case EVENT_CHANNEL_LIST_CHANGED:
3239                 wpa_supplicant_update_channel_list(wpa_s);
3240                 break;
3241         case EVENT_INTERFACE_UNAVAILABLE:
3242 #ifdef CONFIG_P2P
3243                 wpas_p2p_interface_unavailable(wpa_s);
3244 #endif /* CONFIG_P2P */
3245                 break;
3246         case EVENT_BEST_CHANNEL:
3247                 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
3248                         "(%d %d %d)",
3249                         data->best_chan.freq_24, data->best_chan.freq_5,
3250                         data->best_chan.freq_overall);
3251                 wpa_s->best_24_freq = data->best_chan.freq_24;
3252                 wpa_s->best_5_freq = data->best_chan.freq_5;
3253                 wpa_s->best_overall_freq = data->best_chan.freq_overall;
3254 #ifdef CONFIG_P2P
3255                 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
3256                                               data->best_chan.freq_5,
3257                                               data->best_chan.freq_overall);
3258 #endif /* CONFIG_P2P */
3259                 break;
3260         case EVENT_UNPROT_DEAUTH:
3261                 wpa_supplicant_event_unprot_deauth(wpa_s,
3262                                                    &data->unprot_deauth);
3263                 break;
3264         case EVENT_UNPROT_DISASSOC:
3265                 wpa_supplicant_event_unprot_disassoc(wpa_s,
3266                                                      &data->unprot_disassoc);
3267                 break;
3268         case EVENT_STATION_LOW_ACK:
3269 #ifdef CONFIG_AP
3270                 if (wpa_s->ap_iface && data)
3271                         hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
3272                                                   data->low_ack.addr);
3273 #endif /* CONFIG_AP */
3274 #ifdef CONFIG_TDLS
3275                 if (data)
3276                         wpa_tdls_disable_link(wpa_s->wpa, data->low_ack.addr);
3277 #endif /* CONFIG_TDLS */
3278                 break;
3279         case EVENT_IBSS_PEER_LOST:
3280 #ifdef CONFIG_IBSS_RSN
3281                 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
3282 #endif /* CONFIG_IBSS_RSN */
3283                 break;
3284         case EVENT_DRIVER_GTK_REKEY:
3285                 if (os_memcmp(data->driver_gtk_rekey.bssid,
3286                               wpa_s->bssid, ETH_ALEN))
3287                         break;
3288                 if (!wpa_s->wpa)
3289                         break;
3290                 wpa_sm_update_replay_ctr(wpa_s->wpa,
3291                                          data->driver_gtk_rekey.replay_ctr);
3292                 break;
3293         case EVENT_SCHED_SCAN_STOPPED:
3294                 wpa_s->pno = 0;
3295                 wpa_s->sched_scanning = 0;
3296                 wpa_supplicant_notify_scanning(wpa_s, 0);
3297
3298                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
3299                         break;
3300
3301                 /*
3302                  * Start a new sched scan to continue searching for more SSIDs
3303                  * either if timed out or PNO schedule scan is pending.
3304                  */
3305                 if (wpa_s->sched_scan_timed_out || wpa_s->pno_sched_pending) {
3306
3307                         if (wpa_supplicant_req_sched_scan(wpa_s) < 0 &&
3308                             wpa_s->pno_sched_pending) {
3309                                 wpa_msg(wpa_s, MSG_ERROR, "Failed to schedule PNO");
3310                         } else if (wpa_s->pno_sched_pending) {
3311                                 wpa_s->pno_sched_pending = 0;
3312                                 wpa_s->pno = 1;
3313                         }
3314                 }
3315
3316                 break;
3317         case EVENT_WPS_BUTTON_PUSHED:
3318 #ifdef CONFIG_WPS
3319                 wpas_wps_start_pbc(wpa_s, NULL, 0);
3320 #endif /* CONFIG_WPS */
3321                 break;
3322         case EVENT_AVOID_FREQUENCIES:
3323                 wpa_supplicant_notify_avoid_freq(wpa_s, data);
3324                 break;
3325         case EVENT_CONNECT_FAILED_REASON:
3326 #ifdef CONFIG_AP
3327                 if (!wpa_s->ap_iface || !data)
3328                         break;
3329                 hostapd_event_connect_failed_reason(
3330                         wpa_s->ap_iface->bss[0],
3331                         data->connect_failed_reason.addr,
3332                         data->connect_failed_reason.code);
3333 #endif /* CONFIG_AP */
3334                 break;
3335         default:
3336                 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
3337                 break;
3338         }
3339 }