wpa_supplicant/events.c

   1 /*
   2  * WPA Supplicant - Driver event processing
   3  * Copyright (c) 2003-2014, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "eapol_supp/eapol_supp_sm.h"
  13 #include "rsn_supp/wpa.h"
  14 #include "eloop.h"
  15 #include "config.h"
  16 #include "l2_packet/l2_packet.h"
  17 #include "wpa_supplicant_i.h"
  18 #include "driver_i.h"
  19 #include "pcsc_funcs.h"
  20 #include "rsn_supp/preauth.h"
  21 #include "rsn_supp/pmksa_cache.h"
  22 #include "common/wpa_ctrl.h"
  23 #include "eap_peer/eap.h"
  24 #include "ap/hostapd.h"
  25 #include "p2p/p2p.h"
  26 #include "wnm_sta.h"
  27 #include "notify.h"
  28 #include "common/ieee802_11_defs.h"
  29 #include "common/ieee802_11_common.h"
  30 #include "crypto/random.h"
  31 #include "blacklist.h"
  32 #include "wpas_glue.h"
  33 #include "wps_supplicant.h"
  34 #include "ibss_rsn.h"
  35 #include "sme.h"
  36 #include "gas_query.h"
  37 #include "p2p_supplicant.h"
  38 #include "bgscan.h"
  39 #include "autoscan.h"
  40 #include "ap.h"
  41 #include "bss.h"
  42 #include "scan.h"
  43 #include "offchannel.h"
  44 #include "interworking.h"
  45
  46
  47 #ifndef CONFIG_NO_SCAN_PROCESSING
  48 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
  49                                               int new_scan, int own_request);
  50 #endif /* CONFIG_NO_SCAN_PROCESSING */
  51
  52
  53 static int wpas_temp_disabled(struct wpa_supplicant *wpa_s,
  54                               struct wpa_ssid *ssid)
  55 {
  56         struct os_reltime now;
  57
  58         if (ssid == NULL || ssid->disabled_until.sec == 0)
  59                 return 0;
  60
  61         os_get_reltime(&now);
  62         if (ssid->disabled_until.sec > now.sec)
  63                 return ssid->disabled_until.sec - now.sec;
  64
  65         wpas_clear_temp_disabled(wpa_s, ssid, 0);
  66
  67         return 0;
  68 }
  69
  70
  71 static struct wpa_bss * wpa_supplicant_get_new_bss(
  72         struct wpa_supplicant *wpa_s, const u8 *bssid)
  73 {
  74         struct wpa_bss *bss = NULL;
  75         struct wpa_ssid *ssid = wpa_s->current_ssid;
  76
  77         if (ssid->ssid_len > 0)
  78                 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
  79         if (!bss)
  80                 bss = wpa_bss_get_bssid(wpa_s, bssid);
  81
  82         return bss;
  83 }
  84
  85
  86 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
  87 {
  88         struct wpa_ssid *ssid, *old_ssid;
  89         struct wpa_bss *bss;
  90         int res;
  91
  92         if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid)
  93                 return 0;
  94
  95         wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
  96                 "information");
  97         ssid = wpa_supplicant_get_ssid(wpa_s);
  98         if (ssid == NULL) {
  99                 wpa_msg(wpa_s, MSG_INFO,
 100                         "No network configuration found for the current AP");
 101                 return -1;
 102         }
 103
 104         if (wpas_network_disabled(wpa_s, ssid)) {
 105                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
 106                 return -1;
 107         }
 108
 109         if (disallowed_bssid(wpa_s, wpa_s->bssid) ||
 110             disallowed_ssid(wpa_s, ssid->ssid, ssid->ssid_len)) {
 111                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS is disallowed");
 112                 return -1;
 113         }
 114
 115         res = wpas_temp_disabled(wpa_s, ssid);
 116         if (res > 0) {
 117                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is temporarily "
 118                         "disabled for %d second(s)", res);
 119                 return -1;
 120         }
 121
 122         wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
 123                 "current AP");
 124         if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
 125                 u8 wpa_ie[80];
 126                 size_t wpa_ie_len = sizeof(wpa_ie);
 127                 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
 128                                               wpa_ie, &wpa_ie_len) < 0)
 129                         wpa_dbg(wpa_s, MSG_DEBUG, "Could not set WPA suites");
 130         } else {
 131                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
 132         }
 133
 134         if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
 135                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
 136         old_ssid = wpa_s->current_ssid;
 137         wpa_s->current_ssid = ssid;
 138
 139         bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
 140         if (!bss) {
 141                 wpa_supplicant_update_scan_results(wpa_s);
 142
 143                 /* Get the BSS from the new scan results */
 144                 bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
 145         }
 146
 147         if (bss)
 148                 wpa_s->current_bss = bss;
 149
 150         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
 151         wpa_supplicant_initiate_eapol(wpa_s);
 152         if (old_ssid != wpa_s->current_ssid)
 153                 wpas_notify_network_changed(wpa_s);
 154
 155         return 0;
 156 }
 157
 158
 159 void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx)
 160 {
 161         struct wpa_supplicant *wpa_s = eloop_ctx;
 162
 163         if (wpa_s->countermeasures) {
 164                 wpa_s->countermeasures = 0;
 165                 wpa_drv_set_countermeasures(wpa_s, 0);
 166                 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
 167                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 168         }
 169 }
 170
 171
 172 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
 173 {
 174         int bssid_changed;
 175
 176         wnm_bss_keep_alive_deinit(wpa_s);
 177
 178 #ifdef CONFIG_IBSS_RSN
 179         ibss_rsn_deinit(wpa_s->ibss_rsn);
 180         wpa_s->ibss_rsn = NULL;
 181 #endif /* CONFIG_IBSS_RSN */
 182
 183 #ifdef CONFIG_AP
 184         wpa_supplicant_ap_deinit(wpa_s);
 185 #endif /* CONFIG_AP */
 186
 187         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
 188                 return;
 189
 190         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 191         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 192         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 193         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 194 #ifdef CONFIG_SME
 195         wpa_s->sme.prev_bssid_set = 0;
 196 #endif /* CONFIG_SME */
 197 #ifdef CONFIG_P2P
 198         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
 199 #endif /* CONFIG_P2P */
 200         wpa_s->current_bss = NULL;
 201         wpa_s->assoc_freq = 0;
 202 #ifdef CONFIG_IEEE80211R
 203 #ifdef CONFIG_SME
 204         if (wpa_s->sme.ft_ies)
 205                 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
 206 #endif /* CONFIG_SME */
 207 #endif /* CONFIG_IEEE80211R */
 208
 209         if (bssid_changed)
 210                 wpas_notify_bssid_changed(wpa_s);
 211
 212         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
 213         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 214         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
 215                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 216         wpa_s->ap_ies_from_associnfo = 0;
 217         wpa_s->current_ssid = NULL;
 218         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 219         wpa_s->key_mgmt = 0;
 220 }
 221
 222
 223 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
 224 {
 225         struct wpa_ie_data ie;
 226         int pmksa_set = -1;
 227         size_t i;
 228
 229         if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
 230             ie.pmkid == NULL)
 231                 return;
 232
 233         for (i = 0; i < ie.num_pmkid; i++) {
 234                 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
 235                                                     ie.pmkid + i * PMKID_LEN,
 236                                                     NULL, NULL, 0);
 237                 if (pmksa_set == 0) {
 238                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
 239                         break;
 240                 }
 241         }
 242
 243         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
 244                 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
 245 }
 246
 247
 248 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
 249                                                  union wpa_event_data *data)
 250 {
 251         if (data == NULL) {
 252                 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
 253                         "event");
 254                 return;
 255         }
 256         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
 257                 " index=%d preauth=%d",
 258                 MAC2STR(data->pmkid_candidate.bssid),
 259                 data->pmkid_candidate.index,
 260                 data->pmkid_candidate.preauth);
 261
 262         pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
 263                             data->pmkid_candidate.index,
 264                             data->pmkid_candidate.preauth);
 265 }
 266
 267
 268 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
 269 {
 270         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 271             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
 272                 return 0;
 273
 274 #ifdef IEEE8021X_EAPOL
 275         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
 276             wpa_s->current_ssid &&
 277             !(wpa_s->current_ssid->eapol_flags &
 278               (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 279                EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
 280                 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
 281                  * plaintext or static WEP keys). */
 282                 return 0;
 283         }
 284 #endif /* IEEE8021X_EAPOL */
 285
 286         return 1;
 287 }
 288
 289
 290 /**
 291  * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
 292  * @wpa_s: pointer to wpa_supplicant data
 293  * @ssid: Configuration data for the network
 294  * Returns: 0 on success, -1 on failure
 295  *
 296  * This function is called when starting authentication with a network that is
 297  * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
 298  */
 299 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 300                               struct wpa_ssid *ssid)
 301 {
 302 #ifdef IEEE8021X_EAPOL
 303 #ifdef PCSC_FUNCS
 304         int aka = 0, sim = 0;
 305
 306         if (ssid->eap.pcsc == NULL || wpa_s->scard != NULL ||
 307             wpa_s->conf->external_sim)
 308                 return 0;
 309
 310         if (ssid->eap.eap_methods == NULL) {
 311                 sim = 1;
 312                 aka = 1;
 313         } else {
 314                 struct eap_method_type *eap = ssid->eap.eap_methods;
 315                 while (eap->vendor != EAP_VENDOR_IETF ||
 316                        eap->method != EAP_TYPE_NONE) {
 317                         if (eap->vendor == EAP_VENDOR_IETF) {
 318                                 if (eap->method == EAP_TYPE_SIM)
 319                                         sim = 1;
 320                                 else if (eap->method == EAP_TYPE_AKA ||
 321                                          eap->method == EAP_TYPE_AKA_PRIME)
 322                                         aka = 1;
 323                         }
 324                         eap++;
 325                 }
 326         }
 327
 328         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
 329                 sim = 0;
 330         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL &&
 331             eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME) ==
 332             NULL)
 333                 aka = 0;
 334
 335         if (!sim && !aka) {
 336                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
 337                         "use SIM, but neither EAP-SIM nor EAP-AKA are "
 338                         "enabled");
 339                 return 0;
 340         }
 341
 342         wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
 343                 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
 344
 345         wpa_s->scard = scard_init(NULL);
 346         if (wpa_s->scard == NULL) {
 347                 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
 348                         "(pcsc-lite)");
 349                 return -1;
 350         }
 351         wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
 352         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
 353 #endif /* PCSC_FUNCS */
 354 #endif /* IEEE8021X_EAPOL */
 355
 356         return 0;
 357 }
 358
 359
 360 #ifndef CONFIG_NO_SCAN_PROCESSING
 361
 362 static int has_wep_key(struct wpa_ssid *ssid)
 363 {
 364         int i;
 365
 366         for (i = 0; i < NUM_WEP_KEYS; i++) {
 367                 if (ssid->wep_key_len[i])
 368                         return 1;
 369         }
 370
 371         return 0;
 372 }
 373
 374
 375 static int wpa_supplicant_match_privacy(struct wpa_bss *bss,
 376                                         struct wpa_ssid *ssid)
 377 {
 378         int privacy = 0;
 379
 380         if (ssid->mixed_cell)
 381                 return 1;
 382
 383 #ifdef CONFIG_WPS
 384         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
 385                 return 1;
 386 #endif /* CONFIG_WPS */
 387
 388         if (has_wep_key(ssid))
 389                 privacy = 1;
 390
 391 #ifdef IEEE8021X_EAPOL
 392         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
 393             ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 394                                  EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
 395                 privacy = 1;
 396 #endif /* IEEE8021X_EAPOL */
 397
 398         if (wpa_key_mgmt_wpa(ssid->key_mgmt))
 399                 privacy = 1;
 400
 401         if (ssid->key_mgmt & WPA_KEY_MGMT_OSEN)
 402                 privacy = 1;
 403
 404         if (bss->caps & IEEE80211_CAP_PRIVACY)
 405                 return privacy;
 406         return !privacy;
 407 }
 408
 409
 410 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
 411                                          struct wpa_ssid *ssid,
 412                                          struct wpa_bss *bss)
 413 {
 414         struct wpa_ie_data ie;
 415         int proto_match = 0;
 416         const u8 *rsn_ie, *wpa_ie;
 417         int ret;
 418         int wep_ok;
 419
 420         ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
 421         if (ret >= 0)
 422                 return ret;
 423
 424         /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
 425         wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 426                 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 427                   ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
 428                  (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
 429
 430         rsn_ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 431         while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
 432                 proto_match++;
 433
 434                 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
 435                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - parse "
 436                                 "failed");
 437                         break;
 438                 }
 439
 440                 if (wep_ok &&
 441                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 442                 {
 443                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 444                                 "in RSN IE");
 445                         return 1;
 446                 }
 447
 448                 if (!(ie.proto & ssid->proto)) {
 449                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - proto "
 450                                 "mismatch");
 451                         break;
 452                 }
 453
 454                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 455                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - PTK "
 456                                 "cipher mismatch");
 457                         break;
 458                 }
 459
 460                 if (!(ie.group_cipher & ssid->group_cipher)) {
 461                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - GTK "
 462                                 "cipher mismatch");
 463                         break;
 464                 }
 465
 466                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 467                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - key mgmt "
 468                                 "mismatch");
 469                         break;
 470                 }
 471
 472 #ifdef CONFIG_IEEE80211W
 473                 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
 474                     (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
 475                      wpa_s->conf->pmf : ssid->ieee80211w) ==
 476                     MGMT_FRAME_PROTECTION_REQUIRED) {
 477                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - no mgmt "
 478                                 "frame protection");
 479                         break;
 480                 }
 481 #endif /* CONFIG_IEEE80211W */
 482
 483                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on RSN IE");
 484                 return 1;
 485         }
 486
 487         wpa_ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 488         while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
 489                 proto_match++;
 490
 491                 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
 492                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - parse "
 493                                 "failed");
 494                         break;
 495                 }
 496
 497                 if (wep_ok &&
 498                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 499                 {
 500                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 501                                 "in WPA IE");
 502                         return 1;
 503                 }
 504
 505                 if (!(ie.proto & ssid->proto)) {
 506                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - proto "
 507                                 "mismatch");
 508                         break;
 509                 }
 510
 511                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 512                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - PTK "
 513                                 "cipher mismatch");
 514                         break;
 515                 }
 516
 517                 if (!(ie.group_cipher & ssid->group_cipher)) {
 518                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - GTK "
 519                                 "cipher mismatch");
 520                         break;
 521                 }
 522
 523                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 524                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - key mgmt "
 525                                 "mismatch");
 526                         break;
 527                 }
 528
 529                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on WPA IE");
 530                 return 1;
 531         }
 532
 533         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && !wpa_ie &&
 534             !rsn_ie) {
 535                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow for non-WPA IEEE 802.1X");
 536                 return 1;
 537         }
 538
 539         if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
 540             wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
 541                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no WPA/RSN proto match");
 542                 return 0;
 543         }
 544
 545         if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) &&
 546             wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE)) {
 547                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in OSEN");
 548                 return 1;
 549         }
 550
 551         if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
 552                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in non-WPA/WPA2");
 553                 return 1;
 554         }
 555
 556         wpa_dbg(wpa_s, MSG_DEBUG, "   reject due to mismatch with "
 557                 "WPA/WPA2");
 558
 559         return 0;
 560 }
 561
 562
 563 static int freq_allowed(int *freqs, int freq)
 564 {
 565         int i;
 566
 567         if (freqs == NULL)
 568                 return 1;
 569
 570         for (i = 0; freqs[i]; i++)
 571                 if (freqs[i] == freq)
 572                         return 1;
 573         return 0;
 574 }
 575
 576
 577 static int ht_supported(const struct hostapd_hw_modes *mode)
 578 {
 579         if (!(mode->flags & HOSTAPD_MODE_FLAG_HT_INFO_KNOWN)) {
 580                 /*
 581                  * The driver did not indicate whether it supports HT. Assume
 582                  * it does to avoid connection issues.
 583                  */
 584                 return 1;
 585         }
 586
 587         /*
 588          * IEEE Std 802.11n-2009 20.1.1:
 589          * An HT non-AP STA shall support all EQM rates for one spatial stream.
 590          */
 591         return mode->mcs_set[0] == 0xff;
 592 }
 593
 594
 595 static int vht_supported(const struct hostapd_hw_modes *mode)
 596 {
 597         if (!(mode->flags & HOSTAPD_MODE_FLAG_VHT_INFO_KNOWN)) {
 598                 /*
 599                  * The driver did not indicate whether it supports VHT. Assume
 600                  * it does to avoid connection issues.
 601                  */
 602                 return 1;
 603         }
 604
 605         /*
 606          * A VHT non-AP STA shall support MCS 0-7 for one spatial stream.
 607          * TODO: Verify if this complies with the standard
 608          */
 609         return (mode->vht_mcs_set[0] & 0x3) != 3;
 610 }
 611
 612
 613 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
 614 {
 615         const struct hostapd_hw_modes *mode = NULL, *modes;
 616         const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES };
 617         const u8 *rate_ie;
 618         int i, j, k;
 619
 620         if (bss->freq == 0)
 621                 return 1; /* Cannot do matching without knowing band */
 622
 623         modes = wpa_s->hw.modes;
 624         if (modes == NULL) {
 625                 /*
 626                  * The driver does not provide any additional information
 627                  * about the utilized hardware, so allow the connection attempt
 628                  * to continue.
 629                  */
 630                 return 1;
 631         }
 632
 633         for (i = 0; i < wpa_s->hw.num_modes; i++) {
 634                 for (j = 0; j < modes[i].num_channels; j++) {
 635                         int freq = modes[i].channels[j].freq;
 636                         if (freq == bss->freq) {
 637                                 if (mode &&
 638                                     mode->mode == HOSTAPD_MODE_IEEE80211G)
 639                                         break; /* do not allow 802.11b replace
 640                                                 * 802.11g */
 641                                 mode = &modes[i];
 642                                 break;
 643                         }
 644                 }
 645         }
 646
 647         if (mode == NULL)
 648                 return 0;
 649
 650         for (i = 0; i < (int) sizeof(scan_ie); i++) {
 651                 rate_ie = wpa_bss_get_ie(bss, scan_ie[i]);
 652                 if (rate_ie == NULL)
 653                         continue;
 654
 655                 for (j = 2; j < rate_ie[1] + 2; j++) {
 656                         int flagged = !!(rate_ie[j] & 0x80);
 657                         int r = (rate_ie[j] & 0x7f) * 5;
 658
 659                         /*
 660                          * IEEE Std 802.11n-2009 7.3.2.2:
 661                          * The new BSS Membership selector value is encoded
 662                          * like a legacy basic rate, but it is not a rate and
 663                          * only indicates if the BSS members are required to
 664                          * support the mandatory features of Clause 20 [HT PHY]
 665                          * in order to join the BSS.
 666                          */
 667                         if (flagged && ((rate_ie[j] & 0x7f) ==
 668                                         BSS_MEMBERSHIP_SELECTOR_HT_PHY)) {
 669                                 if (!ht_supported(mode)) {
 670                                         wpa_dbg(wpa_s, MSG_DEBUG,
 671                                                 "   hardware does not support "
 672                                                 "HT PHY");
 673                                         return 0;
 674                                 }
 675                                 continue;
 676                         }
 677
 678                         /* There's also a VHT selector for 802.11ac */
 679                         if (flagged && ((rate_ie[j] & 0x7f) ==
 680                                         BSS_MEMBERSHIP_SELECTOR_VHT_PHY)) {
 681                                 if (!vht_supported(mode)) {
 682                                         wpa_dbg(wpa_s, MSG_DEBUG,
 683                                                 "   hardware does not support "
 684                                                 "VHT PHY");
 685                                         return 0;
 686                                 }
 687                                 continue;
 688                         }
 689
 690                         if (!flagged)
 691                                 continue;
 692
 693                         /* check for legacy basic rates */
 694                         for (k = 0; k < mode->num_rates; k++) {
 695                                 if (mode->rates[k] == r)
 696                                         break;
 697                         }
 698                         if (k == mode->num_rates) {
 699                                 /*
 700                                  * IEEE Std 802.11-2007 7.3.2.2 demands that in
 701                                  * order to join a BSS all required rates
 702                                  * have to be supported by the hardware.
 703                                  */
 704                                 wpa_dbg(wpa_s, MSG_DEBUG, "   hardware does "
 705                                         "not support required rate %d.%d Mbps",
 706                                         r / 10, r % 10);
 707                                 return 0;
 708                         }
 709                 }
 710         }
 711
 712         return 1;
 713 }
 714
 715
 716 static int bss_is_dmg(struct wpa_bss *bss)
 717 {
 718         return bss->freq > 45000;
 719 }
 720
 721
 722 /*
 723  * Test whether BSS is in an ESS.
 724  * This is done differently in DMG (60 GHz) and non-DMG bands
 725  */
 726 static int bss_is_ess(struct wpa_bss *bss)
 727 {
 728         if (bss_is_dmg(bss)) {
 729                 return (bss->caps & IEEE80211_CAP_DMG_MASK) ==
 730                         IEEE80211_CAP_DMG_AP;
 731         }
 732
 733         return ((bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) ==
 734                 IEEE80211_CAP_ESS);
 735 }
 736
 737
 738 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
 739                                             int i, struct wpa_bss *bss,
 740                                             struct wpa_ssid *group,
 741                                             int only_first_ssid)
 742 {
 743         u8 wpa_ie_len, rsn_ie_len;
 744         int wpa;
 745         struct wpa_blacklist *e;
 746         const u8 *ie;
 747         struct wpa_ssid *ssid;
 748         int osen;
 749
 750         ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 751         wpa_ie_len = ie ? ie[1] : 0;
 752
 753         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 754         rsn_ie_len = ie ? ie[1] : 0;
 755
 756         ie = wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE);
 757         osen = ie != NULL;
 758
 759         wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
 760                 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s%s%s",
 761                 i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len),
 762                 wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
 763                 wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "",
 764                 (wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) ||
 765                  wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) ?
 766                 " p2p" : "",
 767                 osen ? " osen=1" : "");
 768
 769         e = wpa_blacklist_get(wpa_s, bss->bssid);
 770         if (e) {
 771                 int limit = 1;
 772                 if (wpa_supplicant_enabled_networks(wpa_s) == 1) {
 773                         /*
 774                          * When only a single network is enabled, we can
 775                          * trigger blacklisting on the first failure. This
 776                          * should not be done with multiple enabled networks to
 777                          * avoid getting forced to move into a worse ESS on
 778                          * single error if there are no other BSSes of the
 779                          * current ESS.
 780                          */
 781                         limit = 0;
 782                 }
 783                 if (e->count > limit) {
 784                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 785                                 "(count=%d limit=%d)", e->count, limit);
 786                         return NULL;
 787                 }
 788         }
 789
 790         if (bss->ssid_len == 0) {
 791                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID not known");
 792                 return NULL;
 793         }
 794
 795         if (disallowed_bssid(wpa_s, bss->bssid)) {
 796                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID disallowed");
 797                 return NULL;
 798         }
 799
 800         if (disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
 801                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID disallowed");
 802                 return NULL;
 803         }
 804
 805         wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
 806
 807         for (ssid = group; ssid; ssid = only_first_ssid ? NULL : ssid->pnext) {
 808                 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
 809                 int res;
 810
 811                 if (wpas_network_disabled(wpa_s, ssid)) {
 812                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled");
 813                         continue;
 814                 }
 815
 816                 res = wpas_temp_disabled(wpa_s, ssid);
 817                 if (res > 0) {
 818                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled "
 819                                 "temporarily for %d second(s)", res);
 820                         continue;
 821                 }
 822
 823 #ifdef CONFIG_WPS
 824                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
 825                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 826                                 "(WPS)");
 827                         continue;
 828                 }
 829
 830                 if (wpa && ssid->ssid_len == 0 &&
 831                     wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 832                         check_ssid = 0;
 833
 834                 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 835                         /* Only allow wildcard SSID match if an AP
 836                          * advertises active WPS operation that matches
 837                          * with our mode. */
 838                         check_ssid = 1;
 839                         if (ssid->ssid_len == 0 &&
 840                             wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 841                                 check_ssid = 0;
 842                 }
 843 #endif /* CONFIG_WPS */
 844
 845                 if (ssid->bssid_set && ssid->ssid_len == 0 &&
 846                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
 847                         check_ssid = 0;
 848
 849                 if (check_ssid &&
 850                     (bss->ssid_len != ssid->ssid_len ||
 851                      os_memcmp(bss->ssid, ssid->ssid, bss->ssid_len) != 0)) {
 852                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID mismatch");
 853                         continue;
 854                 }
 855
 856                 if (ssid->bssid_set &&
 857                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
 858                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID mismatch");
 859                         continue;
 860                 }
 861
 862                 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
 863                         continue;
 864
 865                 if (!osen && !wpa &&
 866                     !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 867                     !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
 868                     !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
 869                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-WPA network "
 870                                 "not allowed");
 871                         continue;
 872                 }
 873
 874                 if (wpa && !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 875                     has_wep_key(ssid)) {
 876                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - ignore WPA/WPA2 AP for WEP network block");
 877                         continue;
 878                 }
 879
 880                 if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) && !osen) {
 881                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-OSEN network "
 882                                 "not allowed");
 883                         continue;
 884                 }
 885
 886                 if (!wpa_supplicant_match_privacy(bss, ssid)) {
 887                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - privacy "
 888                                 "mismatch");
 889                         continue;
 890                 }
 891
 892                 if (!bss_is_ess(bss)) {
 893                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - not ESS network");
 894                         continue;
 895                 }
 896
 897                 if (!freq_allowed(ssid->freq_list, bss->freq)) {
 898                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - frequency not "
 899                                 "allowed");
 900                         continue;
 901                 }
 902
 903                 if (!rate_match(wpa_s, bss)) {
 904                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - rate sets do "
 905                                 "not match");
 906                         continue;
 907                 }
 908
 909 #ifdef CONFIG_P2P
 910                 if (ssid->p2p_group &&
 911                     !wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 912                     !wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 913                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P IE seen");
 914                         continue;
 915                 }
 916
 917                 if (!is_zero_ether_addr(ssid->go_p2p_dev_addr)) {
 918                         struct wpabuf *p2p_ie;
 919                         u8 dev_addr[ETH_ALEN];
 920
 921                         ie = wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE);
 922                         if (ie == NULL) {
 923                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P element");
 924                                 continue;
 925                         }
 926                         p2p_ie = wpa_bss_get_vendor_ie_multi(
 927                                 bss, P2P_IE_VENDOR_TYPE);
 928                         if (p2p_ie == NULL) {
 929                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - could not fetch P2P element");
 930                                 continue;
 931                         }
 932
 933                         if (p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr) < 0
 934                             || os_memcmp(dev_addr, ssid->go_p2p_dev_addr,
 935                                          ETH_ALEN) != 0) {
 936                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no matching GO P2P Device Address in P2P element");
 937                                 wpabuf_free(p2p_ie);
 938                                 continue;
 939                         }
 940                         wpabuf_free(p2p_ie);
 941                 }
 942
 943                 /*
 944                  * TODO: skip the AP if its P2P IE has Group Formation
 945                  * bit set in the P2P Group Capability Bitmap and we
 946                  * are not in Group Formation with that device.
 947                  */
 948 #endif /* CONFIG_P2P */
 949
 950                 /* Matching configuration found */
 951                 return ssid;
 952         }
 953
 954         /* No matching configuration found */
 955         return NULL;
 956 }
 957
 958
 959 static struct wpa_bss *
 960 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
 961                           struct wpa_ssid *group,
 962                           struct wpa_ssid **selected_ssid,
 963                           int only_first_ssid)
 964 {
 965         unsigned int i;
 966
 967         if (only_first_ssid)
 968                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to find BSS matching pre-selected network id=%d",
 969                         group->id);
 970         else
 971                 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
 972                         group->priority);
 973
 974         for (i = 0; i < wpa_s->last_scan_res_used; i++) {
 975                 struct wpa_bss *bss = wpa_s->last_scan_res[i];
 976                 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group,
 977                                                     only_first_ssid);
 978                 if (!*selected_ssid)
 979                         continue;
 980                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected BSS " MACSTR
 981                         " ssid='%s'",
 982                         MAC2STR(bss->bssid),
 983                         wpa_ssid_txt(bss->ssid, bss->ssid_len));
 984                 return bss;
 985         }
 986
 987         return NULL;
 988 }
 989
 990
 991 struct wpa_bss * wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
 992                                              struct wpa_ssid **selected_ssid)
 993 {
 994         struct wpa_bss *selected = NULL;
 995         int prio;
 996         struct wpa_ssid *next_ssid = NULL;
 997
 998         if (wpa_s->last_scan_res == NULL ||
 999             wpa_s->last_scan_res_used == 0)
1000                 return NULL; /* no scan results from last update */
1001
1002         if (wpa_s->next_ssid) {
1003                 struct wpa_ssid *ssid;
1004
1005                 /* check that next_ssid is still valid */
1006                 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1007                         if (ssid == wpa_s->next_ssid)
1008                                 break;
1009                 }
1010                 next_ssid = ssid;
1011                 wpa_s->next_ssid = NULL;
1012         }
1013
1014         while (selected == NULL) {
1015                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1016                         if (next_ssid && next_ssid->priority ==
1017                             wpa_s->conf->pssid[prio]->priority) {
1018                                 selected = wpa_supplicant_select_bss(
1019                                         wpa_s, next_ssid, selected_ssid, 1);
1020                                 if (selected)
1021                                         break;
1022                         }
1023                         selected = wpa_supplicant_select_bss(
1024                                 wpa_s, wpa_s->conf->pssid[prio],
1025                                 selected_ssid, 0);
1026                         if (selected)
1027                                 break;
1028                 }
1029
1030                 if (selected == NULL && wpa_s->blacklist &&
1031                     !wpa_s->countermeasures) {
1032                         wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
1033                                 "blacklist and try again");
1034                         wpa_blacklist_clear(wpa_s);
1035                         wpa_s->blacklist_cleared++;
1036                 } else if (selected == NULL)
1037                         break;
1038         }
1039
1040         return selected;
1041 }
1042
1043
1044 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
1045                                         int timeout_sec, int timeout_usec)
1046 {
1047         if (!wpa_supplicant_enabled_networks(wpa_s)) {
1048                 /*
1049                  * No networks are enabled; short-circuit request so
1050                  * we don't wait timeout seconds before transitioning
1051                  * to INACTIVE state.
1052                  */
1053                 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request "
1054                         "since there are no enabled networks");
1055                 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
1056                 return;
1057         }
1058
1059         wpa_s->scan_for_connection = 1;
1060         wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
1061 }
1062
1063
1064 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
1065                            struct wpa_bss *selected,
1066                            struct wpa_ssid *ssid)
1067 {
1068         if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
1069                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
1070                         "PBC session overlap");
1071 #ifdef CONFIG_P2P
1072                 if (wpas_p2p_notif_pbc_overlap(wpa_s) == 1)
1073                         return -1;
1074 #endif /* CONFIG_P2P */
1075
1076 #ifdef CONFIG_WPS
1077                 wpas_wps_cancel(wpa_s);
1078 #endif /* CONFIG_WPS */
1079                 return -1;
1080         }
1081
1082         wpa_msg(wpa_s, MSG_DEBUG,
1083                 "Considering connect request: reassociate: %d  selected: "
1084                 MACSTR "  bssid: " MACSTR "  pending: " MACSTR
1085                 "  wpa_state: %s  ssid=%p  current_ssid=%p",
1086                 wpa_s->reassociate, MAC2STR(selected->bssid),
1087                 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
1088                 wpa_supplicant_state_txt(wpa_s->wpa_state),
1089                 ssid, wpa_s->current_ssid);
1090
1091         /*
1092          * Do not trigger new association unless the BSSID has changed or if
1093          * reassociation is requested. If we are in process of associating with
1094          * the selected BSSID, do not trigger new attempt.
1095          */
1096         if (wpa_s->reassociate ||
1097             (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
1098              ((wpa_s->wpa_state != WPA_ASSOCIATING &&
1099                wpa_s->wpa_state != WPA_AUTHENTICATING) ||
1100               (!is_zero_ether_addr(wpa_s->pending_bssid) &&
1101                os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
1102                0) ||
1103               (is_zero_ether_addr(wpa_s->pending_bssid) &&
1104                ssid != wpa_s->current_ssid)))) {
1105                 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
1106                         wpa_supplicant_req_new_scan(wpa_s, 10, 0);
1107                         return 0;
1108                 }
1109                 wpa_msg(wpa_s, MSG_DEBUG, "Request association with " MACSTR,
1110                         MAC2STR(selected->bssid));
1111                 wpa_supplicant_associate(wpa_s, selected, ssid);
1112         } else {
1113                 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated or trying to "
1114                         "connect with the selected AP");
1115         }
1116
1117         return 0;
1118 }
1119
1120
1121 static struct wpa_ssid *
1122 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
1123 {
1124         int prio;
1125         struct wpa_ssid *ssid;
1126
1127         for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1128                 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
1129                 {
1130                         if (wpas_network_disabled(wpa_s, ssid))
1131                                 continue;
1132                         if (ssid->mode == IEEE80211_MODE_IBSS ||
1133                             ssid->mode == IEEE80211_MODE_AP)
1134                                 return ssid;
1135                 }
1136         }
1137         return NULL;
1138 }
1139
1140
1141 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
1142  * on BSS added and BSS changed events */
1143 static void wpa_supplicant_rsn_preauth_scan_results(
1144         struct wpa_supplicant *wpa_s)
1145 {
1146         struct wpa_bss *bss;
1147
1148         if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
1149                 return;
1150
1151         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1152                 const u8 *ssid, *rsn;
1153
1154                 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
1155                 if (ssid == NULL)
1156                         continue;
1157
1158                 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1159                 if (rsn == NULL)
1160                         continue;
1161
1162                 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
1163         }
1164
1165 }
1166
1167
1168 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
1169                                        struct wpa_bss *selected,
1170                                        struct wpa_ssid *ssid)
1171 {
1172         struct wpa_bss *current_bss = NULL;
1173         int min_diff;
1174
1175         if (wpa_s->reassociate)
1176                 return 1; /* explicit request to reassociate */
1177         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1178                 return 1; /* we are not associated; continue */
1179         if (wpa_s->current_ssid == NULL)
1180                 return 1; /* unknown current SSID */
1181         if (wpa_s->current_ssid != ssid)
1182                 return 1; /* different network block */
1183
1184         if (wpas_driver_bss_selection(wpa_s))
1185                 return 0; /* Driver-based roaming */
1186
1187         if (wpa_s->current_ssid->ssid)
1188                 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid,
1189                                           wpa_s->current_ssid->ssid,
1190                                           wpa_s->current_ssid->ssid_len);
1191         if (!current_bss)
1192                 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
1193
1194         if (!current_bss)
1195                 return 1; /* current BSS not seen in scan results */
1196
1197         if (current_bss == selected)
1198                 return 0;
1199
1200         if (selected->last_update_idx > current_bss->last_update_idx)
1201                 return 1; /* current BSS not seen in the last scan */
1202
1203 #ifndef CONFIG_NO_ROAMING
1204         wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
1205         wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
1206                 MAC2STR(current_bss->bssid), current_bss->level);
1207         wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
1208                 MAC2STR(selected->bssid), selected->level);
1209
1210         if (wpa_s->current_ssid->bssid_set &&
1211             os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
1212             0) {
1213                 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
1214                         "has preferred BSSID");
1215                 return 1;
1216         }
1217
1218         if (current_bss->level < 0 && current_bss->level > selected->level) {
1219                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better "
1220                         "signal level");
1221                 return 0;
1222         }
1223
1224         min_diff = 2;
1225         if (current_bss->level < 0) {
1226                 if (current_bss->level < -85)
1227                         min_diff = 1;
1228                 else if (current_bss->level < -80)
1229                         min_diff = 2;
1230                 else if (current_bss->level < -75)
1231                         min_diff = 3;
1232                 else if (current_bss->level < -70)
1233                         min_diff = 4;
1234                 else
1235                         min_diff = 5;
1236         }
1237         if (abs(current_bss->level - selected->level) < min_diff) {
1238                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
1239                         "in signal level");
1240                 return 0;
1241         }
1242
1243         return 1;
1244 #else /* CONFIG_NO_ROAMING */
1245         return 0;
1246 #endif /* CONFIG_NO_ROAMING */
1247 }
1248
1249
1250 /* Return != 0 if no scan results could be fetched or if scan results should not
1251  * be shared with other virtual interfaces. */
1252 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1253                                               union wpa_event_data *data,
1254                                               int own_request)
1255 {
1256         struct wpa_scan_results *scan_res = NULL;
1257         int ret = 0;
1258         int ap = 0;
1259 #ifndef CONFIG_NO_RANDOM_POOL
1260         size_t i, num;
1261 #endif /* CONFIG_NO_RANDOM_POOL */
1262
1263 #ifdef CONFIG_AP
1264         if (wpa_s->ap_iface)
1265                 ap = 1;
1266 #endif /* CONFIG_AP */
1267
1268         wpa_supplicant_notify_scanning(wpa_s, 0);
1269
1270         scan_res = wpa_supplicant_get_scan_results(wpa_s,
1271                                                    data ? &data->scan_info :
1272                                                    NULL, 1);
1273         if (scan_res == NULL) {
1274                 if (wpa_s->conf->ap_scan == 2 || ap ||
1275                     wpa_s->scan_res_handler == scan_only_handler)
1276                         return -1;
1277                 if (!own_request)
1278                         return -1;
1279                 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1280                         "scanning again");
1281                 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1282                 ret = -1;
1283                 goto scan_work_done;
1284         }
1285
1286 #ifndef CONFIG_NO_RANDOM_POOL
1287         num = scan_res->num;
1288         if (num > 10)
1289                 num = 10;
1290         for (i = 0; i < num; i++) {
1291                 u8 buf[5];
1292                 struct wpa_scan_res *res = scan_res->res[i];
1293                 buf[0] = res->bssid[5];
1294                 buf[1] = res->qual & 0xff;
1295                 buf[2] = res->noise & 0xff;
1296                 buf[3] = res->level & 0xff;
1297                 buf[4] = res->tsf & 0xff;
1298                 random_add_randomness(buf, sizeof(buf));
1299         }
1300 #endif /* CONFIG_NO_RANDOM_POOL */
1301
1302         if (own_request && wpa_s->scan_res_handler &&
1303             (wpa_s->own_scan_running || !wpa_s->external_scan_running)) {
1304                 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1305                                          struct wpa_scan_results *scan_res);
1306
1307                 scan_res_handler = wpa_s->scan_res_handler;
1308                 wpa_s->scan_res_handler = NULL;
1309                 scan_res_handler(wpa_s, scan_res);
1310                 ret = -2;
1311                 goto scan_work_done;
1312         }
1313
1314         if (ap) {
1315                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1316 #ifdef CONFIG_AP
1317                 if (wpa_s->ap_iface->scan_cb)
1318                         wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1319 #endif /* CONFIG_AP */
1320                 goto scan_work_done;
1321         }
1322
1323         wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available (own=%u ext=%u)",
1324                 wpa_s->own_scan_running, wpa_s->external_scan_running);
1325         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
1326             wpa_s->manual_scan_use_id && wpa_s->own_scan_running) {
1327                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS "id=%u",
1328                              wpa_s->manual_scan_id);
1329                 wpa_s->manual_scan_use_id = 0;
1330         } else {
1331                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1332         }
1333         wpas_notify_scan_results(wpa_s);
1334
1335         wpas_notify_scan_done(wpa_s, 1);
1336
1337         if (!wpa_s->own_scan_running && wpa_s->external_scan_running) {
1338                 wpa_dbg(wpa_s, MSG_DEBUG, "Do not use results from externally requested scan operation for network selection");
1339                 wpa_scan_results_free(scan_res);
1340                 return 0;
1341         }
1342
1343         if (sme_proc_obss_scan(wpa_s) > 0)
1344                 goto scan_work_done;
1345
1346         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s)))
1347                 goto scan_work_done;
1348
1349         if (autoscan_notify_scan(wpa_s, scan_res))
1350                 goto scan_work_done;
1351
1352         if (wpa_s->disconnected) {
1353                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1354                 goto scan_work_done;
1355         }
1356
1357         if (!wpas_driver_bss_selection(wpa_s) &&
1358             bgscan_notify_scan(wpa_s, scan_res) == 1)
1359                 goto scan_work_done;
1360
1361         wpas_wps_update_ap_info(wpa_s, scan_res);
1362
1363         wpa_scan_results_free(scan_res);
1364
1365         if (wpa_s->scan_work) {
1366                 struct wpa_radio_work *work = wpa_s->scan_work;
1367                 wpa_s->scan_work = NULL;
1368                 radio_work_done(work);
1369         }
1370
1371         return wpas_select_network_from_last_scan(wpa_s, 1, own_request);
1372
1373 scan_work_done:
1374         wpa_scan_results_free(scan_res);
1375         if (wpa_s->scan_work) {
1376                 struct wpa_radio_work *work = wpa_s->scan_work;
1377                 wpa_s->scan_work = NULL;
1378                 radio_work_done(work);
1379         }
1380         return ret;
1381 }
1382
1383
1384 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
1385                                               int new_scan, int own_request)
1386 {
1387         struct wpa_bss *selected;
1388         struct wpa_ssid *ssid = NULL;
1389
1390         selected = wpa_supplicant_pick_network(wpa_s, &ssid);
1391
1392         if (selected) {
1393                 int skip;
1394                 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid);
1395                 if (skip) {
1396                         if (new_scan)
1397                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1398                         return 0;
1399                 }
1400
1401                 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1402                         wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1403                         return -1;
1404                 }
1405                 if (new_scan)
1406                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1407                 /*
1408                  * Do not notify other virtual radios of scan results since we do not
1409                  * want them to start other associations at the same time.
1410                  */
1411                 return 1;
1412         } else {
1413                 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1414                 ssid = wpa_supplicant_pick_new_network(wpa_s);
1415                 if (ssid) {
1416                         wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1417                         wpa_supplicant_associate(wpa_s, NULL, ssid);
1418                         if (new_scan)
1419                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1420                 } else if (own_request) {
1421                         /*
1422                          * No SSID found. If SCAN results are as a result of
1423                          * own scan request and not due to a scan request on
1424                          * another shared interface, try another scan.
1425                          */
1426                         int timeout_sec = wpa_s->scan_interval;
1427                         int timeout_usec = 0;
1428 #ifdef CONFIG_P2P
1429                         if (wpas_p2p_scan_no_go_seen(wpa_s) == 1)
1430                                 return 0;
1431
1432                         if (wpa_s->p2p_in_provisioning ||
1433                             wpa_s->show_group_started ||
1434                             wpa_s->p2p_in_invitation) {
1435                                 /*
1436                                  * Use shorter wait during P2P Provisioning
1437                                  * state and during P2P join-a-group operation
1438                                  * to speed up group formation.
1439                                  */
1440                                 timeout_sec = 0;
1441                                 timeout_usec = 250000;
1442                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1443                                                             timeout_usec);
1444                                 return 0;
1445                         }
1446 #endif /* CONFIG_P2P */
1447 #ifdef CONFIG_INTERWORKING
1448                         if (wpa_s->conf->auto_interworking &&
1449                             wpa_s->conf->interworking &&
1450                             wpa_s->conf->cred) {
1451                                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: "
1452                                         "start ANQP fetch since no matching "
1453                                         "networks found");
1454                                 wpa_s->network_select = 1;
1455                                 wpa_s->auto_network_select = 1;
1456                                 interworking_start_fetch_anqp(wpa_s);
1457                                 return 1;
1458                         }
1459 #endif /* CONFIG_INTERWORKING */
1460 #ifdef CONFIG_WPS
1461                         if (wpa_s->after_wps > 0 || wpas_wps_searching(wpa_s)) {
1462                                 wpa_dbg(wpa_s, MSG_DEBUG, "Use shorter wait during WPS processing");
1463                                 timeout_sec = 0;
1464                                 timeout_usec = 500000;
1465                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1466                                                             timeout_usec);
1467                                 return 0;
1468                         }
1469 #endif /* CONFIG_WPS */
1470                         if (wpa_supplicant_req_sched_scan(wpa_s))
1471                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1472                                                             timeout_usec);
1473                 }
1474         }
1475         return 0;
1476 }
1477
1478
1479 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1480                                               union wpa_event_data *data)
1481 {
1482         struct wpa_supplicant *ifs;
1483
1484         if (_wpa_supplicant_event_scan_results(wpa_s, data, 1) != 0) {
1485                 /*
1486                  * If no scan results could be fetched, then no need to
1487                  * notify those interfaces that did not actually request
1488                  * this scan. Similarly, if scan results started a new operation on this
1489                  * interface, do not notify other interfaces to avoid concurrent
1490                  * operations during a connection attempt.
1491                  */
1492                 return;
1493         }
1494
1495         /*
1496          * Check other interfaces to see if they share the same radio. If
1497          * so, they get updated with this same scan info.
1498          */
1499         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
1500                          radio_list) {
1501                 if (ifs != wpa_s) {
1502                         wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1503                                    "sibling", ifs->ifname);
1504                         _wpa_supplicant_event_scan_results(ifs, data, 0);
1505                 }
1506         }
1507 }
1508
1509 #endif /* CONFIG_NO_SCAN_PROCESSING */
1510
1511
1512 int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s)
1513 {
1514 #ifdef CONFIG_NO_SCAN_PROCESSING
1515         return -1;
1516 #else /* CONFIG_NO_SCAN_PROCESSING */
1517         struct os_reltime now;
1518
1519         if (wpa_s->last_scan_res_used <= 0)
1520                 return -1;
1521
1522         os_get_reltime(&now);
1523         if (os_reltime_expired(&now, &wpa_s->last_scan, 5)) {
1524                 wpa_printf(MSG_DEBUG, "Fast associate: Old scan results");
1525                 return -1;
1526         }
1527
1528         return wpas_select_network_from_last_scan(wpa_s, 0, 1);
1529 #endif /* CONFIG_NO_SCAN_PROCESSING */
1530 }
1531
1532 #ifdef CONFIG_WNM
1533
1534 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx)
1535 {
1536         struct wpa_supplicant *wpa_s = eloop_ctx;
1537
1538         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1539                 return;
1540
1541         if (!wpa_s->no_keep_alive) {
1542                 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR,
1543                            MAC2STR(wpa_s->bssid));
1544                 /* TODO: could skip this if normal data traffic has been sent */
1545                 /* TODO: Consider using some more appropriate data frame for
1546                  * this */
1547                 if (wpa_s->l2)
1548                         l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800,
1549                                        (u8 *) "", 0);
1550         }
1551
1552 #ifdef CONFIG_SME
1553         if (wpa_s->sme.bss_max_idle_period) {
1554                 unsigned int msec;
1555                 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */
1556                 if (msec > 100)
1557                         msec -= 100;
1558                 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1559                                        wnm_bss_keep_alive, wpa_s, NULL);
1560         }
1561 #endif /* CONFIG_SME */
1562 }
1563
1564
1565 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s,
1566                                    const u8 *ies, size_t ies_len)
1567 {
1568         struct ieee802_11_elems elems;
1569
1570         if (ies == NULL)
1571                 return;
1572
1573         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1574                 return;
1575
1576 #ifdef CONFIG_SME
1577         if (elems.bss_max_idle_period) {
1578                 unsigned int msec;
1579                 wpa_s->sme.bss_max_idle_period =
1580                         WPA_GET_LE16(elems.bss_max_idle_period);
1581                 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 "
1582                            "TU)%s", wpa_s->sme.bss_max_idle_period,
1583                            (elems.bss_max_idle_period[2] & 0x01) ?
1584                            " (protected keep-live required)" : "");
1585                 if (wpa_s->sme.bss_max_idle_period == 0)
1586                         wpa_s->sme.bss_max_idle_period = 1;
1587                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
1588                         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1589                          /* msec times 1000 */
1590                         msec = wpa_s->sme.bss_max_idle_period * 1024;
1591                         if (msec > 100)
1592                                 msec -= 100;
1593                         eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1594                                                wnm_bss_keep_alive, wpa_s,
1595                                                NULL);
1596                 }
1597         }
1598 #endif /* CONFIG_SME */
1599 }
1600
1601 #endif /* CONFIG_WNM */
1602
1603
1604 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s)
1605 {
1606 #ifdef CONFIG_WNM
1607         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1608 #endif /* CONFIG_WNM */
1609 }
1610
1611
1612 #ifdef CONFIG_INTERWORKING
1613
1614 static int wpas_qos_map_set(struct wpa_supplicant *wpa_s, const u8 *qos_map,
1615                             size_t len)
1616 {
1617         int res;
1618
1619         wpa_hexdump(MSG_DEBUG, "Interworking: QoS Map Set", qos_map, len);
1620         res = wpa_drv_set_qos_map(wpa_s, qos_map, len);
1621         if (res) {
1622                 wpa_printf(MSG_DEBUG, "Interworking: Failed to configure QoS Map Set to the driver");
1623         }
1624
1625         return res;
1626 }
1627
1628
1629 static void interworking_process_assoc_resp(struct wpa_supplicant *wpa_s,
1630                                             const u8 *ies, size_t ies_len)
1631 {
1632         struct ieee802_11_elems elems;
1633
1634         if (ies == NULL)
1635                 return;
1636
1637         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1638                 return;
1639
1640         if (elems.qos_map_set) {
1641                 wpas_qos_map_set(wpa_s, elems.qos_map_set,
1642                                  elems.qos_map_set_len);
1643         }
1644 }
1645
1646 #endif /* CONFIG_INTERWORKING */
1647
1648
1649 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1650                                           union wpa_event_data *data)
1651 {
1652         int l, len, found = 0, wpa_found, rsn_found;
1653         const u8 *p;
1654 #ifdef CONFIG_IEEE80211R
1655         u8 bssid[ETH_ALEN];
1656 #endif /* CONFIG_IEEE80211R */
1657
1658         wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1659         if (data->assoc_info.req_ies)
1660                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1661                             data->assoc_info.req_ies_len);
1662         if (data->assoc_info.resp_ies) {
1663                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1664                             data->assoc_info.resp_ies_len);
1665 #ifdef CONFIG_TDLS
1666                 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1667                                         data->assoc_info.resp_ies_len);
1668 #endif /* CONFIG_TDLS */
1669 #ifdef CONFIG_WNM
1670                 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1671                                        data->assoc_info.resp_ies_len);
1672 #endif /* CONFIG_WNM */
1673 #ifdef CONFIG_INTERWORKING
1674                 interworking_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1675                                                 data->assoc_info.resp_ies_len);
1676 #endif /* CONFIG_INTERWORKING */
1677         }
1678         if (data->assoc_info.beacon_ies)
1679                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1680                             data->assoc_info.beacon_ies,
1681                             data->assoc_info.beacon_ies_len);
1682         if (data->assoc_info.freq)
1683                 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1684                         data->assoc_info.freq);
1685
1686         p = data->assoc_info.req_ies;
1687         l = data->assoc_info.req_ies_len;
1688
1689         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1690         while (p && l >= 2) {
1691                 len = p[1] + 2;
1692                 if (len > l) {
1693                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1694                                     p, l);
1695                         break;
1696                 }
1697                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1698                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1699                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1700                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1701                                 break;
1702                         found = 1;
1703                         wpa_find_assoc_pmkid(wpa_s);
1704                         break;
1705                 }
1706                 l -= len;
1707                 p += len;
1708         }
1709         if (!found && data->assoc_info.req_ies)
1710                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1711
1712 #ifdef CONFIG_IEEE80211R
1713 #ifdef CONFIG_SME
1714         if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1715                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1716                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1717                                                  data->assoc_info.resp_ies,
1718                                                  data->assoc_info.resp_ies_len,
1719                                                  bssid) < 0) {
1720                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1721                                 "Reassociation Response failed");
1722                         wpa_supplicant_deauthenticate(
1723                                 wpa_s, WLAN_REASON_INVALID_IE);
1724                         return -1;
1725                 }
1726         }
1727
1728         p = data->assoc_info.resp_ies;
1729         l = data->assoc_info.resp_ies_len;
1730
1731 #ifdef CONFIG_WPS_STRICT
1732         if (p && wpa_s->current_ssid &&
1733             wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1734                 struct wpabuf *wps;
1735                 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1736                 if (wps == NULL) {
1737                         wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1738                                 "include WPS IE in (Re)Association Response");
1739                         return -1;
1740                 }
1741
1742                 if (wps_validate_assoc_resp(wps) < 0) {
1743                         wpabuf_free(wps);
1744                         wpa_supplicant_deauthenticate(
1745                                 wpa_s, WLAN_REASON_INVALID_IE);
1746                         return -1;
1747                 }
1748                 wpabuf_free(wps);
1749         }
1750 #endif /* CONFIG_WPS_STRICT */
1751
1752         /* Go through the IEs and make a copy of the MDIE, if present. */
1753         while (p && l >= 2) {
1754                 len = p[1] + 2;
1755                 if (len > l) {
1756                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1757                                     p, l);
1758                         break;
1759                 }
1760                 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1761                     p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1762                         wpa_s->sme.ft_used = 1;
1763                         os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1764                                   MOBILITY_DOMAIN_ID_LEN);
1765                         break;
1766                 }
1767                 l -= len;
1768                 p += len;
1769         }
1770 #endif /* CONFIG_SME */
1771
1772         /* Process FT when SME is in the driver */
1773         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
1774             wpa_ft_is_completed(wpa_s->wpa)) {
1775                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1776                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1777                                                  data->assoc_info.resp_ies,
1778                                                  data->assoc_info.resp_ies_len,
1779                                                  bssid) < 0) {
1780                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1781                                 "Reassociation Response failed");
1782                         wpa_supplicant_deauthenticate(
1783                                 wpa_s, WLAN_REASON_INVALID_IE);
1784                         return -1;
1785                 }
1786                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Reassociation Response done");
1787         }
1788
1789         wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1790                              data->assoc_info.resp_ies_len);
1791 #endif /* CONFIG_IEEE80211R */
1792
1793         /* WPA/RSN IE from Beacon/ProbeResp */
1794         p = data->assoc_info.beacon_ies;
1795         l = data->assoc_info.beacon_ies_len;
1796
1797         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1798          */
1799         wpa_found = rsn_found = 0;
1800         while (p && l >= 2) {
1801                 len = p[1] + 2;
1802                 if (len > l) {
1803                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1804                                     p, l);
1805                         break;
1806                 }
1807                 if (!wpa_found &&
1808                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1809                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1810                         wpa_found = 1;
1811                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1812                 }
1813
1814                 if (!rsn_found &&
1815                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
1816                         rsn_found = 1;
1817                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1818                 }
1819
1820                 l -= len;
1821                 p += len;
1822         }
1823
1824         if (!wpa_found && data->assoc_info.beacon_ies)
1825                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1826         if (!rsn_found && data->assoc_info.beacon_ies)
1827                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1828         if (wpa_found || rsn_found)
1829                 wpa_s->ap_ies_from_associnfo = 1;
1830
1831         if (wpa_s->assoc_freq && data->assoc_info.freq &&
1832             wpa_s->assoc_freq != data->assoc_info.freq) {
1833                 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
1834                            "%u to %u MHz",
1835                            wpa_s->assoc_freq, data->assoc_info.freq);
1836                 wpa_supplicant_update_scan_results(wpa_s);
1837         }
1838
1839         wpa_s->assoc_freq = data->assoc_info.freq;
1840
1841         return 0;
1842 }
1843
1844
1845 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
1846 {
1847         const u8 *bss_wpa = NULL, *bss_rsn = NULL;
1848
1849         if (!wpa_s->current_bss || !wpa_s->current_ssid)
1850                 return -1;
1851
1852         if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
1853                 return 0;
1854
1855         bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
1856                                         WPA_IE_VENDOR_TYPE);
1857         bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
1858
1859         if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
1860                                  bss_wpa ? 2 + bss_wpa[1] : 0) ||
1861             wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
1862                                  bss_rsn ? 2 + bss_rsn[1] : 0))
1863                 return -1;
1864
1865         return 0;
1866 }
1867
1868
1869 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1870                                        union wpa_event_data *data)
1871 {
1872         u8 bssid[ETH_ALEN];
1873         int ft_completed;
1874
1875 #ifdef CONFIG_AP
1876         if (wpa_s->ap_iface) {
1877                 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1878                                     data->assoc_info.addr,
1879                                     data->assoc_info.req_ies,
1880                                     data->assoc_info.req_ies_len,
1881                                     data->assoc_info.reassoc);
1882                 return;
1883         }
1884 #endif /* CONFIG_AP */
1885
1886         ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1887         if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1888                 return;
1889
1890         if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
1891                 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID");
1892                 wpa_supplicant_deauthenticate(
1893                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1894                 return;
1895         }
1896
1897         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1898         if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
1899                 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1900                         MACSTR, MAC2STR(bssid));
1901                 random_add_randomness(bssid, ETH_ALEN);
1902                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1903                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1904                 wpas_notify_bssid_changed(wpa_s);
1905
1906                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1907                         wpa_clear_keys(wpa_s, bssid);
1908                 }
1909                 if (wpa_supplicant_select_config(wpa_s) < 0) {
1910                         wpa_supplicant_deauthenticate(
1911                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1912                         return;
1913                 }
1914
1915                 if (wpa_s->conf->ap_scan == 1 &&
1916                     wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
1917                         if (wpa_supplicant_assoc_update_ie(wpa_s) < 0)
1918                                 wpa_msg(wpa_s, MSG_WARNING,
1919                                         "WPA/RSN IEs not updated");
1920                 }
1921         }
1922
1923 #ifdef CONFIG_SME
1924         os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1925         wpa_s->sme.prev_bssid_set = 1;
1926 #endif /* CONFIG_SME */
1927
1928         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1929         if (wpa_s->current_ssid) {
1930                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1931                  * initialized before association, but for other modes,
1932                  * initialize PC/SC here, if the current configuration needs
1933                  * smartcard or SIM/USIM. */
1934                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1935         }
1936         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1937         if (wpa_s->l2)
1938                 l2_packet_notify_auth_start(wpa_s->l2);
1939
1940         /*
1941          * Set portEnabled first to FALSE in order to get EAP state machine out
1942          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1943          * state machine may transit to AUTHENTICATING state based on obsolete
1944          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1945          * AUTHENTICATED without ever giving chance to EAP state machine to
1946          * reset the state.
1947          */
1948         if (!ft_completed) {
1949                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1950                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1951         }
1952         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1953                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1954         /* 802.1X::portControl = Auto */
1955         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1956         wpa_s->eapol_received = 0;
1957         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1958             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1959             (wpa_s->current_ssid &&
1960              wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1961                 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE &&
1962                     (wpa_s->drv_flags &
1963                      WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
1964                         /*
1965                          * Set the key after having received joined-IBSS event
1966                          * from the driver.
1967                          */
1968                         wpa_supplicant_set_wpa_none_key(wpa_s,
1969                                                         wpa_s->current_ssid);
1970                 }
1971                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1972                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1973         } else if (!ft_completed) {
1974                 /* Timeout for receiving the first EAPOL packet */
1975                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1976         }
1977         wpa_supplicant_cancel_scan(wpa_s);
1978
1979         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1980             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1981                 /*
1982                  * We are done; the driver will take care of RSN 4-way
1983                  * handshake.
1984                  */
1985                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1986                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1987                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1988                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1989         } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1990                    wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1991                 /*
1992                  * The driver will take care of RSN 4-way handshake, so we need
1993                  * to allow EAPOL supplicant to complete its work without
1994                  * waiting for WPA supplicant.
1995                  */
1996                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1997         } else if (ft_completed) {
1998                 /*
1999                  * FT protocol completed - make sure EAPOL state machine ends
2000                  * up in authenticated.
2001                  */
2002                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2003                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2004                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2005                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2006         }
2007
2008         wpa_s->last_eapol_matches_bssid = 0;
2009
2010         if (wpa_s->pending_eapol_rx) {
2011                 struct os_reltime now, age;
2012                 os_get_reltime(&now);
2013                 os_reltime_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
2014                 if (age.sec == 0 && age.usec < 100000 &&
2015                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
2016                     0) {
2017                         wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
2018                                 "frame that was received just before "
2019                                 "association notification");
2020                         wpa_supplicant_rx_eapol(
2021                                 wpa_s, wpa_s->pending_eapol_rx_src,
2022                                 wpabuf_head(wpa_s->pending_eapol_rx),
2023                                 wpabuf_len(wpa_s->pending_eapol_rx));
2024                 }
2025                 wpabuf_free(wpa_s->pending_eapol_rx);
2026                 wpa_s->pending_eapol_rx = NULL;
2027         }
2028
2029         if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2030              wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
2031             wpa_s->current_ssid &&
2032             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2033                 /* Set static WEP keys again */
2034                 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
2035         }
2036
2037 #ifdef CONFIG_IBSS_RSN
2038         if (wpa_s->current_ssid &&
2039             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
2040             wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
2041             wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
2042             wpa_s->ibss_rsn == NULL) {
2043                 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
2044                 if (!wpa_s->ibss_rsn) {
2045                         wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
2046                         wpa_supplicant_deauthenticate(
2047                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2048                         return;
2049                 }
2050
2051                 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
2052         }
2053 #endif /* CONFIG_IBSS_RSN */
2054
2055         wpas_wps_notify_assoc(wpa_s, bssid);
2056 }
2057
2058
2059 static int disconnect_reason_recoverable(u16 reason_code)
2060 {
2061         return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
2062                 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
2063                 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
2064 }
2065
2066
2067 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
2068                                           u16 reason_code,
2069                                           int locally_generated)
2070 {
2071         const u8 *bssid;
2072
2073         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2074                 /*
2075                  * At least Host AP driver and a Prism3 card seemed to be
2076                  * generating streams of disconnected events when configuring
2077                  * IBSS for WPA-None. Ignore them for now.
2078                  */
2079                 return;
2080         }
2081
2082         bssid = wpa_s->bssid;
2083         if (is_zero_ether_addr(bssid))
2084                 bssid = wpa_s->pending_bssid;
2085
2086         if (!is_zero_ether_addr(bssid) ||
2087             wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2088                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
2089                         " reason=%d%s",
2090                         MAC2STR(bssid), reason_code,
2091                         locally_generated ? " locally_generated=1" : "");
2092         }
2093 }
2094
2095
2096 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code,
2097                                  int locally_generated)
2098 {
2099         if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE ||
2100             !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
2101                 return 0; /* Not in 4-way handshake with PSK */
2102
2103         /*
2104          * It looks like connection was lost while trying to go through PSK
2105          * 4-way handshake. Filter out known disconnection cases that are caused
2106          * by something else than PSK mismatch to avoid confusing reports.
2107          */
2108
2109         if (locally_generated) {
2110                 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS)
2111                         return 0;
2112         }
2113
2114         return 1;
2115 }
2116
2117
2118 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s,
2119                                                  u16 reason_code,
2120                                                  int locally_generated)
2121 {
2122         const u8 *bssid;
2123         int authenticating;
2124         u8 prev_pending_bssid[ETH_ALEN];
2125         struct wpa_bss *fast_reconnect = NULL;
2126         struct wpa_ssid *fast_reconnect_ssid = NULL;
2127         struct wpa_ssid *last_ssid;
2128
2129         authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
2130         os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
2131
2132         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2133                 /*
2134                  * At least Host AP driver and a Prism3 card seemed to be
2135                  * generating streams of disconnected events when configuring
2136                  * IBSS for WPA-None. Ignore them for now.
2137                  */
2138                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
2139                         "IBSS/WPA-None mode");
2140                 return;
2141         }
2142
2143         if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) {
2144                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
2145                         "pre-shared key may be incorrect");
2146                 if (wpas_p2p_4way_hs_failed(wpa_s) > 0)
2147                         return; /* P2P group removed */
2148                 wpas_auth_failed(wpa_s);
2149         }
2150         if (!wpa_s->disconnected &&
2151             (!wpa_s->auto_reconnect_disabled ||
2152              wpa_s->key_mgmt == WPA_KEY_MGMT_WPS)) {
2153                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
2154                         "reconnect (wps=%d wpa_state=%d)",
2155                         wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
2156                         wpa_s->wpa_state);
2157                 if (wpa_s->wpa_state == WPA_COMPLETED &&
2158                     wpa_s->current_ssid &&
2159                     wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
2160                     !locally_generated &&
2161                     disconnect_reason_recoverable(reason_code)) {
2162                         /*
2163                          * It looks like the AP has dropped association with
2164                          * us, but could allow us to get back in. Try to
2165                          * reconnect to the same BSS without full scan to save
2166                          * time for some common cases.
2167                          */
2168                         fast_reconnect = wpa_s->current_bss;
2169                         fast_reconnect_ssid = wpa_s->current_ssid;
2170                 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
2171                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2172                 else
2173                         wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
2174                                 "immediate scan");
2175         } else {
2176                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
2177                         "try to re-connect");
2178                 wpa_s->reassociate = 0;
2179                 wpa_s->disconnected = 1;
2180                 wpa_supplicant_cancel_sched_scan(wpa_s);
2181         }
2182         bssid = wpa_s->bssid;
2183         if (is_zero_ether_addr(bssid))
2184                 bssid = wpa_s->pending_bssid;
2185         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2186                 wpas_connection_failed(wpa_s, bssid);
2187         wpa_sm_notify_disassoc(wpa_s->wpa);
2188         if (locally_generated)
2189                 wpa_s->disconnect_reason = -reason_code;
2190         else
2191                 wpa_s->disconnect_reason = reason_code;
2192         wpas_notify_disconnect_reason(wpa_s);
2193         if (wpa_supplicant_dynamic_keys(wpa_s)) {
2194                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
2195                 wpa_clear_keys(wpa_s, wpa_s->bssid);
2196         }
2197         last_ssid = wpa_s->current_ssid;
2198         wpa_supplicant_mark_disassoc(wpa_s);
2199
2200         if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
2201                 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
2202                 wpa_s->current_ssid = last_ssid;
2203         }
2204
2205         if (fast_reconnect &&
2206             !wpas_network_disabled(wpa_s, fast_reconnect_ssid) &&
2207             !disallowed_bssid(wpa_s, fast_reconnect->bssid) &&
2208             !disallowed_ssid(wpa_s, fast_reconnect->ssid,
2209                              fast_reconnect->ssid_len) &&
2210             !wpas_temp_disabled(wpa_s, fast_reconnect_ssid)) {
2211 #ifndef CONFIG_NO_SCAN_PROCESSING
2212                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
2213                 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
2214                                            fast_reconnect_ssid) < 0) {
2215                         /* Recover through full scan */
2216                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2217                 }
2218 #endif /* CONFIG_NO_SCAN_PROCESSING */
2219         } else if (fast_reconnect) {
2220                 /*
2221                  * Could not reconnect to the same BSS due to network being
2222                  * disabled. Use a new scan to match the alternative behavior
2223                  * above, i.e., to continue automatic reconnection attempt in a
2224                  * way that enforces disabled network rules.
2225                  */
2226                 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2227         }
2228 }
2229
2230
2231 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2232 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
2233 {
2234         struct wpa_supplicant *wpa_s = eloop_ctx;
2235
2236         if (!wpa_s->pending_mic_error_report)
2237                 return;
2238
2239         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
2240         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
2241         wpa_s->pending_mic_error_report = 0;
2242 }
2243 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2244
2245
2246 static void
2247 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
2248                                          union wpa_event_data *data)
2249 {
2250         int pairwise;
2251         struct os_reltime t;
2252
2253         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
2254         pairwise = (data && data->michael_mic_failure.unicast);
2255         os_get_reltime(&t);
2256         if ((wpa_s->last_michael_mic_error.sec &&
2257              !os_reltime_expired(&t, &wpa_s->last_michael_mic_error, 60)) ||
2258             wpa_s->pending_mic_error_report) {
2259                 if (wpa_s->pending_mic_error_report) {
2260                         /*
2261                          * Send the pending MIC error report immediately since
2262                          * we are going to start countermeasures and AP better
2263                          * do the same.
2264                          */
2265                         wpa_sm_key_request(wpa_s->wpa, 1,
2266                                            wpa_s->pending_mic_error_pairwise);
2267                 }
2268
2269                 /* Send the new MIC error report immediately since we are going
2270                  * to start countermeasures and AP better do the same.
2271                  */
2272                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2273
2274                 /* initialize countermeasures */
2275                 wpa_s->countermeasures = 1;
2276
2277                 wpa_blacklist_add(wpa_s, wpa_s->bssid);
2278
2279                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
2280
2281                 /*
2282                  * Need to wait for completion of request frame. We do not get
2283                  * any callback for the message completion, so just wait a
2284                  * short while and hope for the best. */
2285                 os_sleep(0, 10000);
2286
2287                 wpa_drv_set_countermeasures(wpa_s, 1);
2288                 wpa_supplicant_deauthenticate(wpa_s,
2289                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
2290                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
2291                                      wpa_s, NULL);
2292                 eloop_register_timeout(60, 0,
2293                                        wpa_supplicant_stop_countermeasures,
2294                                        wpa_s, NULL);
2295                 /* TODO: mark the AP rejected for 60 second. STA is
2296                  * allowed to associate with another AP.. */
2297         } else {
2298 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2299                 if (wpa_s->mic_errors_seen) {
2300                         /*
2301                          * Reduce the effectiveness of Michael MIC error
2302                          * reports as a means for attacking against TKIP if
2303                          * more than one MIC failure is noticed with the same
2304                          * PTK. We delay the transmission of the reports by a
2305                          * random time between 0 and 60 seconds in order to
2306                          * force the attacker wait 60 seconds before getting
2307                          * the information on whether a frame resulted in a MIC
2308                          * failure.
2309                          */
2310                         u8 rval[4];
2311                         int sec;
2312
2313                         if (os_get_random(rval, sizeof(rval)) < 0)
2314                                 sec = os_random() % 60;
2315                         else
2316                                 sec = WPA_GET_BE32(rval) % 60;
2317                         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
2318                                 "report %d seconds", sec);
2319                         wpa_s->pending_mic_error_report = 1;
2320                         wpa_s->pending_mic_error_pairwise = pairwise;
2321                         eloop_cancel_timeout(
2322                                 wpa_supplicant_delayed_mic_error_report,
2323                                 wpa_s, NULL);
2324                         eloop_register_timeout(
2325                                 sec, os_random() % 1000000,
2326                                 wpa_supplicant_delayed_mic_error_report,
2327                                 wpa_s, NULL);
2328                 } else {
2329                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2330                 }
2331 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2332                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2333 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2334         }
2335         wpa_s->last_michael_mic_error = t;
2336         wpa_s->mic_errors_seen++;
2337 }
2338
2339
2340 #ifdef CONFIG_TERMINATE_ONLASTIF
2341 static int any_interfaces(struct wpa_supplicant *head)
2342 {
2343         struct wpa_supplicant *wpa_s;
2344
2345         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
2346                 if (!wpa_s->interface_removed)
2347                         return 1;
2348         return 0;
2349 }
2350 #endif /* CONFIG_TERMINATE_ONLASTIF */
2351
2352
2353 static void
2354 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
2355                                       union wpa_event_data *data)
2356 {
2357         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
2358                 return;
2359
2360         switch (data->interface_status.ievent) {
2361         case EVENT_INTERFACE_ADDED:
2362                 if (!wpa_s->interface_removed)
2363                         break;
2364                 wpa_s->interface_removed = 0;
2365                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
2366                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
2367                         wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
2368                                 "driver after interface was added");
2369                 }
2370                 break;
2371         case EVENT_INTERFACE_REMOVED:
2372                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
2373                 wpa_s->interface_removed = 1;
2374                 wpa_supplicant_mark_disassoc(wpa_s);
2375                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2376                 l2_packet_deinit(wpa_s->l2);
2377                 wpa_s->l2 = NULL;
2378 #ifdef CONFIG_IBSS_RSN
2379                 ibss_rsn_deinit(wpa_s->ibss_rsn);
2380                 wpa_s->ibss_rsn = NULL;
2381 #endif /* CONFIG_IBSS_RSN */
2382 #ifdef CONFIG_TERMINATE_ONLASTIF
2383                 /* check if last interface */
2384                 if (!any_interfaces(wpa_s->global->ifaces))
2385                         eloop_terminate();
2386 #endif /* CONFIG_TERMINATE_ONLASTIF */
2387                 break;
2388         }
2389 }
2390
2391
2392 #ifdef CONFIG_PEERKEY
2393 static void
2394 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
2395                               union wpa_event_data *data)
2396 {
2397         if (data == NULL)
2398                 return;
2399         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
2400 }
2401 #endif /* CONFIG_PEERKEY */
2402
2403
2404 #ifdef CONFIG_TDLS
2405 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
2406                                       union wpa_event_data *data)
2407 {
2408         if (data == NULL)
2409                 return;
2410         switch (data->tdls.oper) {
2411         case TDLS_REQUEST_SETUP:
2412                 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer);
2413                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2414                         wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
2415                 else
2416                         wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer);
2417                 break;
2418         case TDLS_REQUEST_TEARDOWN:
2419                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2420                         wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer,
2421                                                data->tdls.reason_code);
2422                 else
2423                         wpa_drv_tdls_oper(wpa_s, TDLS_TEARDOWN,
2424                                           data->tdls.peer);
2425                 break;
2426         }
2427 }
2428 #endif /* CONFIG_TDLS */
2429
2430
2431 #ifdef CONFIG_WNM
2432 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
2433                                      union wpa_event_data *data)
2434 {
2435         if (data == NULL)
2436                 return;
2437         switch (data->wnm.oper) {
2438         case WNM_OPER_SLEEP:
2439                 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
2440                            "(action=%d, intval=%d)",
2441                            data->wnm.sleep_action, data->wnm.sleep_intval);
2442                 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
2443                                              data->wnm.sleep_intval, NULL);
2444                 break;
2445         }
2446 }
2447 #endif /* CONFIG_WNM */
2448
2449
2450 #ifdef CONFIG_IEEE80211R
2451 static void
2452 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
2453                                  union wpa_event_data *data)
2454 {
2455         if (data == NULL)
2456                 return;
2457
2458         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
2459                                     data->ft_ies.ies_len,
2460                                     data->ft_ies.ft_action,
2461                                     data->ft_ies.target_ap,
2462                                     data->ft_ies.ric_ies,
2463                                     data->ft_ies.ric_ies_len) < 0) {
2464                 /* TODO: prevent MLME/driver from trying to associate? */
2465         }
2466 }
2467 #endif /* CONFIG_IEEE80211R */
2468
2469
2470 #ifdef CONFIG_IBSS_RSN
2471 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
2472                                                 union wpa_event_data *data)
2473 {
2474         struct wpa_ssid *ssid;
2475         if (wpa_s->wpa_state < WPA_ASSOCIATED)
2476                 return;
2477         if (data == NULL)
2478                 return;
2479         ssid = wpa_s->current_ssid;
2480         if (ssid == NULL)
2481                 return;
2482         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2483                 return;
2484
2485         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
2486 }
2487
2488
2489 static void wpa_supplicant_event_ibss_auth(struct wpa_supplicant *wpa_s,
2490                                            union wpa_event_data *data)
2491 {
2492         struct wpa_ssid *ssid = wpa_s->current_ssid;
2493
2494         if (ssid == NULL)
2495                 return;
2496
2497         /* check if the ssid is correctly configured as IBSS/RSN */
2498         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2499                 return;
2500
2501         ibss_rsn_handle_auth(wpa_s->ibss_rsn, data->rx_mgmt.frame,
2502                              data->rx_mgmt.frame_len);
2503 }
2504 #endif /* CONFIG_IBSS_RSN */
2505
2506
2507 #ifdef CONFIG_IEEE80211R
2508 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
2509                          size_t len)
2510 {
2511         const u8 *sta_addr, *target_ap_addr;
2512         u16 status;
2513
2514         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
2515         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
2516                 return; /* only SME case supported for now */
2517         if (len < 1 + 2 * ETH_ALEN + 2)
2518                 return;
2519         if (data[0] != 2)
2520                 return; /* Only FT Action Response is supported for now */
2521         sta_addr = data + 1;
2522         target_ap_addr = data + 1 + ETH_ALEN;
2523         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
2524         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
2525                 MACSTR " TargetAP " MACSTR " status %u",
2526                 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
2527
2528         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
2529                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
2530                         " in FT Action Response", MAC2STR(sta_addr));
2531                 return;
2532         }
2533
2534         if (status) {
2535                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
2536                         "failure (status code %d)", status);
2537                 /* TODO: report error to FT code(?) */
2538                 return;
2539         }
2540
2541         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
2542                                     len - (1 + 2 * ETH_ALEN + 2), 1,
2543                                     target_ap_addr, NULL, 0) < 0)
2544                 return;
2545
2546 #ifdef CONFIG_SME
2547         {
2548                 struct wpa_bss *bss;
2549                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
2550                 if (bss)
2551                         wpa_s->sme.freq = bss->freq;
2552                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
2553                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
2554                               WLAN_AUTH_FT);
2555         }
2556 #endif /* CONFIG_SME */
2557 }
2558 #endif /* CONFIG_IEEE80211R */
2559
2560
2561 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
2562                                                struct unprot_deauth *e)
2563 {
2564 #ifdef CONFIG_IEEE80211W
2565         wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
2566                    "dropped: " MACSTR " -> " MACSTR
2567                    " (reason code %u)",
2568                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2569         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2570 #endif /* CONFIG_IEEE80211W */
2571 }
2572
2573
2574 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
2575                                                  struct unprot_disassoc *e)
2576 {
2577 #ifdef CONFIG_IEEE80211W
2578         wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
2579                    "dropped: " MACSTR " -> " MACSTR
2580                    " (reason code %u)",
2581                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2582         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2583 #endif /* CONFIG_IEEE80211W */
2584 }
2585
2586
2587 static void wpas_event_disconnect(struct wpa_supplicant *wpa_s, const u8 *addr,
2588                                   u16 reason_code, int locally_generated,
2589                                   const u8 *ie, size_t ie_len, int deauth)
2590 {
2591 #ifdef CONFIG_AP
2592         if (wpa_s->ap_iface && addr) {
2593                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], addr);
2594                 return;
2595         }
2596
2597         if (wpa_s->ap_iface) {
2598                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in AP mode");
2599                 return;
2600         }
2601 #endif /* CONFIG_AP */
2602
2603         wpa_supplicant_event_disassoc(wpa_s, reason_code, locally_generated);
2604
2605         if (((reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
2606               ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
2607                 (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
2608                eapol_sm_failed(wpa_s->eapol))) &&
2609              !wpa_s->eap_expected_failure))
2610                 wpas_auth_failed(wpa_s);
2611
2612 #ifdef CONFIG_P2P
2613         if (deauth && reason_code > 0) {
2614                 if (wpas_p2p_deauth_notif(wpa_s, addr, reason_code, ie, ie_len,
2615                                           locally_generated) > 0) {
2616                         /*
2617                          * The interface was removed, so cannot continue
2618                          * processing any additional operations after this.
2619                          */
2620                         return;
2621                 }
2622         }
2623 #endif /* CONFIG_P2P */
2624
2625         wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
2626                                              locally_generated);
2627 }
2628
2629
2630 static void wpas_event_disassoc(struct wpa_supplicant *wpa_s,
2631                                 struct disassoc_info *info)
2632 {
2633         u16 reason_code = 0;
2634         int locally_generated = 0;
2635         const u8 *addr = NULL;
2636         const u8 *ie = NULL;
2637         size_t ie_len = 0;
2638
2639         wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
2640
2641         if (info) {
2642                 addr = info->addr;
2643                 ie = info->ie;
2644                 ie_len = info->ie_len;
2645                 reason_code = info->reason_code;
2646                 locally_generated = info->locally_generated;
2647                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", reason_code,
2648                         locally_generated ? " (locally generated)" : "");
2649                 if (addr)
2650                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2651                                 MAC2STR(addr));
2652                 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
2653                             ie, ie_len);
2654         }
2655
2656 #ifdef CONFIG_AP
2657         if (wpa_s->ap_iface && info && info->addr) {
2658                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], info->addr);
2659                 return;
2660         }
2661
2662         if (wpa_s->ap_iface) {
2663                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in AP mode");
2664                 return;
2665         }
2666 #endif /* CONFIG_AP */
2667
2668 #ifdef CONFIG_P2P
2669         if (info) {
2670                 wpas_p2p_disassoc_notif(
2671                         wpa_s, info->addr, reason_code, info->ie, info->ie_len,
2672                         locally_generated);
2673         }
2674 #endif /* CONFIG_P2P */
2675
2676         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2677                 sme_event_disassoc(wpa_s, info);
2678
2679         wpas_event_disconnect(wpa_s, addr, reason_code, locally_generated,
2680                               ie, ie_len, 0);
2681 }
2682
2683
2684 static void wpas_event_deauth(struct wpa_supplicant *wpa_s,
2685                               struct deauth_info *info)
2686 {
2687         u16 reason_code = 0;
2688         int locally_generated = 0;
2689         const u8 *addr = NULL;
2690         const u8 *ie = NULL;
2691         size_t ie_len = 0;
2692
2693         wpa_dbg(wpa_s, MSG_DEBUG, "Deauthentication notification");
2694
2695         if (info) {
2696                 addr = info->addr;
2697                 ie = info->ie;
2698                 ie_len = info->ie_len;
2699                 reason_code = info->reason_code;
2700                 locally_generated = info->locally_generated;
2701                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2702                         reason_code,
2703                         locally_generated ? " (locally generated)" : "");
2704                 if (addr) {
2705                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2706                                 MAC2STR(addr));
2707                 }
2708                 wpa_hexdump(MSG_DEBUG, "Deauthentication frame IE(s)",
2709                             ie, ie_len);
2710         }
2711
2712         wpa_reset_ft_completed(wpa_s->wpa);
2713
2714         wpas_event_disconnect(wpa_s, addr, reason_code,
2715                               locally_generated, ie, ie_len, 1);
2716 }
2717
2718
2719 static void wpa_supplicant_update_channel_list(struct wpa_supplicant *wpa_s)
2720 {
2721         struct wpa_supplicant *ifs;
2722
2723         if (wpa_s->drv_priv == NULL)
2724                 return; /* Ignore event during drv initialization */
2725
2726         free_hw_features(wpa_s);
2727         wpa_s->hw.modes = wpa_drv_get_hw_feature_data(
2728                 wpa_s, &wpa_s->hw.num_modes, &wpa_s->hw.flags);
2729
2730 #ifdef CONFIG_P2P
2731         wpas_p2p_update_channel_list(wpa_s);
2732 #endif /* CONFIG_P2P */
2733
2734         /*
2735          * Check other interfaces to see if they share the same radio. If
2736          * so, they get updated with this same hw mode info.
2737          */
2738         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
2739                          radio_list) {
2740                 if (ifs != wpa_s) {
2741                         wpa_printf(MSG_DEBUG, "%s: Updating hw mode",
2742                                    ifs->ifname);
2743                         free_hw_features(ifs);
2744                         ifs->hw.modes = wpa_drv_get_hw_feature_data(
2745                                 ifs, &ifs->hw.num_modes, &ifs->hw.flags);
2746                 }
2747         }
2748 }
2749
2750
2751 static void wpas_event_rx_mgmt_action(struct wpa_supplicant *wpa_s,
2752                                       const struct ieee80211_mgmt *mgmt,
2753                                       size_t len, int freq)
2754 {
2755         const u8 *payload;
2756         size_t plen;
2757         u8 category;
2758
2759         if (len < IEEE80211_HDRLEN + 2)
2760                 return;
2761
2762         payload = &mgmt->u.action.category;
2763         category = *payload++;
2764         plen = (((const u8 *) mgmt) + len) - payload;
2765
2766         wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
2767                 " Category=%u DataLen=%d freq=%d MHz",
2768                 MAC2STR(mgmt->sa), category, (int) plen, freq);
2769
2770 #ifdef CONFIG_IEEE80211R
2771         if (category == WLAN_ACTION_FT) {
2772                 ft_rx_action(wpa_s, payload, plen);
2773                 return;
2774         }
2775 #endif /* CONFIG_IEEE80211R */
2776
2777 #ifdef CONFIG_IEEE80211W
2778 #ifdef CONFIG_SME
2779         if (category == WLAN_ACTION_SA_QUERY) {
2780                 sme_sa_query_rx(wpa_s, mgmt->sa, payload, plen);
2781                 return;
2782         }
2783 #endif /* CONFIG_SME */
2784 #endif /* CONFIG_IEEE80211W */
2785
2786 #ifdef CONFIG_WNM
2787         if (mgmt->u.action.category == WLAN_ACTION_WNM) {
2788                 ieee802_11_rx_wnm_action(wpa_s, mgmt, len);
2789                 return;
2790         }
2791 #endif /* CONFIG_WNM */
2792
2793 #ifdef CONFIG_GAS
2794         if ((mgmt->u.action.category == WLAN_ACTION_PUBLIC ||
2795              mgmt->u.action.category == WLAN_ACTION_PROTECTED_DUAL) &&
2796             gas_query_rx(wpa_s->gas, mgmt->da, mgmt->sa, mgmt->bssid,
2797                          mgmt->u.action.category,
2798                          payload, plen, freq) == 0)
2799                 return;
2800 #endif /* CONFIG_GAS */
2801
2802 #ifdef CONFIG_TDLS
2803         if (category == WLAN_ACTION_PUBLIC && plen >= 4 &&
2804             payload[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
2805                 wpa_dbg(wpa_s, MSG_DEBUG,
2806                         "TDLS: Received Discovery Response from " MACSTR,
2807                         MAC2STR(mgmt->sa));
2808                 return;
2809         }
2810 #endif /* CONFIG_TDLS */
2811
2812 #ifdef CONFIG_INTERWORKING
2813         if (category == WLAN_ACTION_QOS && plen >= 1 &&
2814             payload[0] == QOS_QOS_MAP_CONFIG) {
2815                 const u8 *pos = payload + 1;
2816                 size_t qlen = plen - 1;
2817                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: Received QoS Map Configure frame from "
2818                         MACSTR, MAC2STR(mgmt->sa));
2819                 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) == 0 &&
2820                     qlen > 2 && pos[0] == WLAN_EID_QOS_MAP_SET &&
2821                     pos[1] <= qlen - 2 && pos[1] >= 16)
2822                         wpas_qos_map_set(wpa_s, pos + 2, pos[1]);
2823                 return;
2824         }
2825 #endif /* CONFIG_INTERWORKING */
2826
2827 #ifdef CONFIG_P2P
2828         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
2829                            category, payload, plen, freq);
2830 #endif /* CONFIG_P2P */
2831 }
2832
2833
2834 static void wpa_supplicant_notify_avoid_freq(struct wpa_supplicant *wpa_s,
2835                                              union wpa_event_data *event)
2836 {
2837 #ifdef CONFIG_P2P
2838         struct wpa_supplicant *ifs;
2839 #endif /* CONFIG_P2P */
2840         struct wpa_freq_range_list *list;
2841         char *str = NULL;
2842
2843         list = &event->freq_range;
2844
2845         if (list->num)
2846                 str = freq_range_list_str(list);
2847         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AVOID_FREQ "ranges=%s",
2848                 str ? str : "");
2849
2850 #ifdef CONFIG_P2P
2851         if (freq_range_list_parse(&wpa_s->global->p2p_go_avoid_freq, str)) {
2852                 wpa_dbg(wpa_s, MSG_ERROR, "%s: Failed to parse freq range",
2853                         __func__);
2854         } else {
2855                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Update channel list based on frequency avoid event");
2856                 wpas_p2p_update_channel_list(wpa_s);
2857         }
2858
2859         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
2860                 int freq;
2861                 if (!ifs->current_ssid ||
2862                     !ifs->current_ssid->p2p_group ||
2863                     (ifs->current_ssid->mode != WPAS_MODE_P2P_GO &&
2864                      ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION))
2865                         continue;
2866
2867                 freq = ifs->current_ssid->frequency;
2868                 if (!freq_range_list_includes(list, freq)) {
2869                         wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating frequency %d MHz in safe range",
2870                                 freq);
2871                         continue;
2872                 }
2873
2874                 wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating in unsafe frequency %d MHz",
2875                         freq);
2876                 /* TODO: Consider using CSA or removing the group within
2877                  * wpa_supplicant */
2878                 wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
2879         }
2880 #endif /* CONFIG_P2P */
2881
2882         os_free(str);
2883 }
2884
2885
2886 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
2887                           union wpa_event_data *data)
2888 {
2889         struct wpa_supplicant *wpa_s = ctx;
2890
2891         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
2892             event != EVENT_INTERFACE_ENABLED &&
2893             event != EVENT_INTERFACE_STATUS &&
2894             event != EVENT_SCHED_SCAN_STOPPED) {
2895                 wpa_dbg(wpa_s, MSG_DEBUG,
2896                         "Ignore event %s (%d) while interface is disabled",
2897                         event_to_string(event), event);
2898                 return;
2899         }
2900
2901 #ifndef CONFIG_NO_STDOUT_DEBUG
2902 {
2903         int level = MSG_DEBUG;
2904
2905         if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
2906                 const struct ieee80211_hdr *hdr;
2907                 u16 fc;
2908                 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
2909                 fc = le_to_host16(hdr->frame_control);
2910                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2911                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
2912                         level = MSG_EXCESSIVE;
2913         }
2914
2915         wpa_dbg(wpa_s, level, "Event %s (%d) received",
2916                 event_to_string(event), event);
2917 }
2918 #endif /* CONFIG_NO_STDOUT_DEBUG */
2919
2920         switch (event) {
2921         case EVENT_AUTH:
2922                 sme_event_auth(wpa_s, data);
2923                 break;
2924         case EVENT_ASSOC:
2925                 wpa_supplicant_event_assoc(wpa_s, data);
2926                 break;
2927         case EVENT_DISASSOC:
2928                 wpas_event_disassoc(wpa_s,
2929                                     data ? &data->disassoc_info : NULL);
2930                 break;
2931         case EVENT_DEAUTH:
2932                 wpas_event_deauth(wpa_s,
2933                                   data ? &data->deauth_info : NULL);
2934                 break;
2935         case EVENT_MICHAEL_MIC_FAILURE:
2936                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
2937                 break;
2938 #ifndef CONFIG_NO_SCAN_PROCESSING
2939         case EVENT_SCAN_STARTED:
2940                 os_get_reltime(&wpa_s->scan_start_time);
2941                 if (wpa_s->own_scan_requested) {
2942                         struct os_reltime diff;
2943
2944                         os_reltime_sub(&wpa_s->scan_start_time,
2945                                        &wpa_s->scan_trigger_time, &diff);
2946                         wpa_dbg(wpa_s, MSG_DEBUG, "Own scan request started a scan in %ld.%06ld seconds",
2947                                 diff.sec, diff.usec);
2948                         wpa_s->own_scan_requested = 0;
2949                         wpa_s->own_scan_running = 1;
2950                         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
2951                             wpa_s->manual_scan_use_id) {
2952                                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED "id=%u",
2953                                         wpa_s->manual_scan_id);
2954                         } else {
2955                                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
2956                         }
2957                 } else {
2958                         wpa_dbg(wpa_s, MSG_DEBUG, "External program started a scan");
2959                         wpa_s->external_scan_running = 1;
2960                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
2961                 }
2962                 break;
2963         case EVENT_SCAN_RESULTS:
2964                 if (os_reltime_initialized(&wpa_s->scan_start_time)) {
2965                         struct os_reltime now, diff;
2966                         os_get_reltime(&now);
2967                         os_reltime_sub(&now, &wpa_s->scan_start_time, &diff);
2968                         wpa_s->scan_start_time.sec = 0;
2969                         wpa_s->scan_start_time.usec = 0;
2970                         wpa_dbg(wpa_s, MSG_DEBUG, "Scan completed in %ld.%06ld seconds",
2971                                 diff.sec, diff.usec);
2972                 }
2973                 wpa_supplicant_event_scan_results(wpa_s, data);
2974                 wpa_s->own_scan_running = 0;
2975                 wpa_s->external_scan_running = 0;
2976                 radio_work_check_next(wpa_s);
2977                 break;
2978 #endif /* CONFIG_NO_SCAN_PROCESSING */
2979         case EVENT_ASSOCINFO:
2980                 wpa_supplicant_event_associnfo(wpa_s, data);
2981                 break;
2982         case EVENT_INTERFACE_STATUS:
2983                 wpa_supplicant_event_interface_status(wpa_s, data);
2984                 break;
2985         case EVENT_PMKID_CANDIDATE:
2986                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
2987                 break;
2988 #ifdef CONFIG_PEERKEY
2989         case EVENT_STKSTART:
2990                 wpa_supplicant_event_stkstart(wpa_s, data);
2991                 break;
2992 #endif /* CONFIG_PEERKEY */
2993 #ifdef CONFIG_TDLS
2994         case EVENT_TDLS:
2995                 wpa_supplicant_event_tdls(wpa_s, data);
2996                 break;
2997 #endif /* CONFIG_TDLS */
2998 #ifdef CONFIG_WNM
2999         case EVENT_WNM:
3000                 wpa_supplicant_event_wnm(wpa_s, data);
3001                 break;
3002 #endif /* CONFIG_WNM */
3003 #ifdef CONFIG_IEEE80211R
3004         case EVENT_FT_RESPONSE:
3005                 wpa_supplicant_event_ft_response(wpa_s, data);
3006                 break;
3007 #endif /* CONFIG_IEEE80211R */
3008 #ifdef CONFIG_IBSS_RSN
3009         case EVENT_IBSS_RSN_START:
3010                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
3011                 break;
3012 #endif /* CONFIG_IBSS_RSN */
3013         case EVENT_ASSOC_REJECT:
3014                 if (data->assoc_reject.bssid)
3015                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3016                                 "bssid=" MACSTR " status_code=%u",
3017                                 MAC2STR(data->assoc_reject.bssid),
3018                                 data->assoc_reject.status_code);
3019                 else
3020                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3021                                 "status_code=%u",
3022                                 data->assoc_reject.status_code);
3023                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3024                         sme_event_assoc_reject(wpa_s, data);
3025                 else {
3026                         const u8 *bssid = data->assoc_reject.bssid;
3027                         if (bssid == NULL || is_zero_ether_addr(bssid))
3028                                 bssid = wpa_s->pending_bssid;
3029                         wpas_connection_failed(wpa_s, bssid);
3030                         wpa_supplicant_mark_disassoc(wpa_s);
3031                 }
3032                 break;
3033         case EVENT_AUTH_TIMED_OUT:
3034                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3035                         sme_event_auth_timed_out(wpa_s, data);
3036                 break;
3037         case EVENT_ASSOC_TIMED_OUT:
3038                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3039                         sme_event_assoc_timed_out(wpa_s, data);
3040                 break;
3041         case EVENT_TX_STATUS:
3042                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
3043                         " type=%d stype=%d",
3044                         MAC2STR(data->tx_status.dst),
3045                         data->tx_status.type, data->tx_status.stype);
3046 #ifdef CONFIG_AP
3047                 if (wpa_s->ap_iface == NULL) {
3048 #ifdef CONFIG_OFFCHANNEL
3049                         if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3050                             data->tx_status.stype == WLAN_FC_STYPE_ACTION)
3051                                 offchannel_send_action_tx_status(
3052                                         wpa_s, data->tx_status.dst,
3053                                         data->tx_status.data,
3054                                         data->tx_status.data_len,
3055                                         data->tx_status.ack ?
3056                                         OFFCHANNEL_SEND_ACTION_SUCCESS :
3057                                         OFFCHANNEL_SEND_ACTION_NO_ACK);
3058 #endif /* CONFIG_OFFCHANNEL */
3059                         break;
3060                 }
3061 #endif /* CONFIG_AP */
3062 #ifdef CONFIG_OFFCHANNEL
3063                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
3064                         MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
3065                 /*
3066                  * Catch TX status events for Action frames we sent via group
3067                  * interface in GO mode.
3068                  */
3069                 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3070                     data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
3071                     os_memcmp(wpa_s->parent->pending_action_dst,
3072                               data->tx_status.dst, ETH_ALEN) == 0) {
3073                         offchannel_send_action_tx_status(
3074                                 wpa_s->parent, data->tx_status.dst,
3075                                 data->tx_status.data,
3076                                 data->tx_status.data_len,
3077                                 data->tx_status.ack ?
3078                                 OFFCHANNEL_SEND_ACTION_SUCCESS :
3079                                 OFFCHANNEL_SEND_ACTION_NO_ACK);
3080                         break;
3081                 }
3082 #endif /* CONFIG_OFFCHANNEL */
3083 #ifdef CONFIG_AP
3084                 switch (data->tx_status.type) {
3085                 case WLAN_FC_TYPE_MGMT:
3086                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
3087                                       data->tx_status.data_len,
3088                                       data->tx_status.stype,
3089                                       data->tx_status.ack);
3090                         break;
3091                 case WLAN_FC_TYPE_DATA:
3092                         ap_tx_status(wpa_s, data->tx_status.dst,
3093                                      data->tx_status.data,
3094                                      data->tx_status.data_len,
3095                                      data->tx_status.ack);
3096                         break;
3097                 }
3098 #endif /* CONFIG_AP */
3099                 break;
3100 #ifdef CONFIG_AP
3101         case EVENT_EAPOL_TX_STATUS:
3102                 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
3103                                    data->eapol_tx_status.data,
3104                                    data->eapol_tx_status.data_len,
3105                                    data->eapol_tx_status.ack);
3106                 break;
3107         case EVENT_DRIVER_CLIENT_POLL_OK:
3108                 ap_client_poll_ok(wpa_s, data->client_poll.addr);
3109                 break;
3110         case EVENT_RX_FROM_UNKNOWN:
3111                 if (wpa_s->ap_iface == NULL)
3112                         break;
3113                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
3114                                        data->rx_from_unknown.wds);
3115                 break;
3116         case EVENT_CH_SWITCH:
3117                 if (!data)
3118                         break;
3119                 if (!wpa_s->ap_iface) {
3120                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: Ignore channel switch "
3121                                 "event in non-AP mode");
3122                         break;
3123                 }
3124
3125                 wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
3126                                   data->ch_switch.ht_enabled,
3127                                   data->ch_switch.ch_offset,
3128                                   data->ch_switch.ch_width,
3129                                   data->ch_switch.cf1,
3130                                   data->ch_switch.cf2);
3131                 break;
3132 #endif /* CONFIG_AP */
3133         case EVENT_RX_MGMT: {
3134                 u16 fc, stype;
3135                 const struct ieee80211_mgmt *mgmt;
3136
3137 #ifdef CONFIG_TESTING_OPTIONS
3138                 if (wpa_s->ext_mgmt_frame_handling) {
3139                         struct rx_mgmt *rx = &data->rx_mgmt;
3140                         size_t hex_len = 2 * rx->frame_len + 1;
3141                         char *hex = os_malloc(hex_len);
3142                         if (hex) {
3143                                 wpa_snprintf_hex(hex, hex_len,
3144                                                  rx->frame, rx->frame_len);
3145                                 wpa_msg(wpa_s, MSG_INFO, "MGMT-RX freq=%d datarate=%u ssi_signal=%d %s",
3146                                         rx->freq, rx->datarate, rx->ssi_signal,
3147                                         hex);
3148                                 os_free(hex);
3149                         }
3150                         break;
3151                 }
3152 #endif /* CONFIG_TESTING_OPTIONS */
3153
3154                 mgmt = (const struct ieee80211_mgmt *)
3155                         data->rx_mgmt.frame;
3156                 fc = le_to_host16(mgmt->frame_control);
3157                 stype = WLAN_FC_GET_STYPE(fc);
3158
3159 #ifdef CONFIG_AP
3160                 if (wpa_s->ap_iface == NULL) {
3161 #endif /* CONFIG_AP */
3162 #ifdef CONFIG_P2P
3163                         if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3164                             data->rx_mgmt.frame_len > 24) {
3165                                 const u8 *src = mgmt->sa;
3166                                 const u8 *ie = mgmt->u.probe_req.variable;
3167                                 size_t ie_len = data->rx_mgmt.frame_len -
3168                                         (mgmt->u.probe_req.variable -
3169                                          data->rx_mgmt.frame);
3170                                 wpas_p2p_probe_req_rx(
3171                                         wpa_s, src, mgmt->da,
3172                                         mgmt->bssid, ie, ie_len,
3173                                         data->rx_mgmt.ssi_signal);
3174                                 break;
3175                         }
3176 #endif /* CONFIG_P2P */
3177 #ifdef CONFIG_IBSS_RSN
3178                         if (stype == WLAN_FC_STYPE_AUTH &&
3179                             data->rx_mgmt.frame_len >= 30) {
3180                                 wpa_supplicant_event_ibss_auth(wpa_s, data);
3181                                 break;
3182                         }
3183 #endif /* CONFIG_IBSS_RSN */
3184
3185                         if (stype == WLAN_FC_STYPE_ACTION) {
3186                                 wpas_event_rx_mgmt_action(
3187                                         wpa_s, mgmt, data->rx_mgmt.frame_len,
3188                                         data->rx_mgmt.freq);
3189                                 break;
3190                         }
3191
3192                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
3193                                 "management frame in non-AP mode");
3194                         break;
3195 #ifdef CONFIG_AP
3196                 }
3197
3198                 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3199                     data->rx_mgmt.frame_len > 24) {
3200                         const u8 *ie = mgmt->u.probe_req.variable;
3201                         size_t ie_len = data->rx_mgmt.frame_len -
3202                                 (mgmt->u.probe_req.variable -
3203                                  data->rx_mgmt.frame);
3204
3205                         wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
3206                                          mgmt->bssid, ie, ie_len,
3207                                          data->rx_mgmt.ssi_signal);
3208                 }
3209
3210                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
3211 #endif /* CONFIG_AP */
3212                 break;
3213                 }
3214         case EVENT_RX_PROBE_REQ:
3215                 if (data->rx_probe_req.sa == NULL ||
3216                     data->rx_probe_req.ie == NULL)
3217                         break;
3218 #ifdef CONFIG_AP
3219                 if (wpa_s->ap_iface) {
3220                         hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
3221                                              data->rx_probe_req.sa,
3222                                              data->rx_probe_req.da,
3223                                              data->rx_probe_req.bssid,
3224                                              data->rx_probe_req.ie,
3225                                              data->rx_probe_req.ie_len,
3226                                              data->rx_probe_req.ssi_signal);
3227                         break;
3228                 }
3229 #endif /* CONFIG_AP */
3230 #ifdef CONFIG_P2P
3231                 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
3232                                       data->rx_probe_req.da,
3233                                       data->rx_probe_req.bssid,
3234                                       data->rx_probe_req.ie,
3235                                       data->rx_probe_req.ie_len,
3236                                       data->rx_probe_req.ssi_signal);
3237 #endif /* CONFIG_P2P */
3238                 break;
3239         case EVENT_REMAIN_ON_CHANNEL:
3240 #ifdef CONFIG_OFFCHANNEL
3241                 offchannel_remain_on_channel_cb(
3242                         wpa_s, data->remain_on_channel.freq,
3243                         data->remain_on_channel.duration);
3244 #endif /* CONFIG_OFFCHANNEL */
3245 #ifdef CONFIG_P2P
3246                 wpas_p2p_remain_on_channel_cb(
3247                         wpa_s, data->remain_on_channel.freq,
3248                         data->remain_on_channel.duration);
3249 #endif /* CONFIG_P2P */
3250                 break;
3251         case EVENT_CANCEL_REMAIN_ON_CHANNEL:
3252 #ifdef CONFIG_OFFCHANNEL
3253                 offchannel_cancel_remain_on_channel_cb(
3254                         wpa_s, data->remain_on_channel.freq);
3255 #endif /* CONFIG_OFFCHANNEL */
3256 #ifdef CONFIG_P2P
3257                 wpas_p2p_cancel_remain_on_channel_cb(
3258                         wpa_s, data->remain_on_channel.freq);
3259 #endif /* CONFIG_P2P */
3260                 break;
3261         case EVENT_EAPOL_RX:
3262                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
3263                                         data->eapol_rx.data,
3264                                         data->eapol_rx.data_len);
3265                 break;
3266         case EVENT_SIGNAL_CHANGE:
3267                 bgscan_notify_signal_change(
3268                         wpa_s, data->signal_change.above_threshold,
3269                         data->signal_change.current_signal,
3270                         data->signal_change.current_noise,
3271                         data->signal_change.current_txrate);
3272                 break;
3273         case EVENT_INTERFACE_ENABLED:
3274                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
3275                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
3276                         wpa_supplicant_update_mac_addr(wpa_s);
3277 #ifdef CONFIG_AP
3278                         if (!wpa_s->ap_iface) {
3279                                 wpa_supplicant_set_state(wpa_s,
3280                                                          WPA_DISCONNECTED);
3281                                 wpa_supplicant_req_scan(wpa_s, 0, 0);
3282                         } else
3283                                 wpa_supplicant_set_state(wpa_s,
3284                                                          WPA_COMPLETED);
3285 #else /* CONFIG_AP */
3286                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
3287                         wpa_supplicant_req_scan(wpa_s, 0, 0);
3288 #endif /* CONFIG_AP */
3289                 }
3290                 break;
3291         case EVENT_INTERFACE_DISABLED:
3292                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
3293 #ifdef CONFIG_P2P
3294                 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
3295                     (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group &&
3296                      wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)) {
3297                         /*
3298                          * The interface was externally disabled. Remove
3299                          * it assuming an external entity will start a
3300                          * new session if needed.
3301                          */
3302                         wpas_p2p_disconnect(wpa_s);
3303                         break;
3304                 }
3305 #endif /* CONFIG_P2P */
3306
3307                 wpa_supplicant_mark_disassoc(wpa_s);
3308                 radio_remove_works(wpa_s, NULL, 0);
3309
3310                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3311                 break;
3312         case EVENT_CHANNEL_LIST_CHANGED:
3313                 wpa_supplicant_update_channel_list(wpa_s);
3314                 break;
3315         case EVENT_INTERFACE_UNAVAILABLE:
3316 #ifdef CONFIG_P2P
3317                 wpas_p2p_interface_unavailable(wpa_s);
3318 #endif /* CONFIG_P2P */
3319                 break;
3320         case EVENT_BEST_CHANNEL:
3321                 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
3322                         "(%d %d %d)",
3323                         data->best_chan.freq_24, data->best_chan.freq_5,
3324                         data->best_chan.freq_overall);
3325                 wpa_s->best_24_freq = data->best_chan.freq_24;
3326                 wpa_s->best_5_freq = data->best_chan.freq_5;
3327                 wpa_s->best_overall_freq = data->best_chan.freq_overall;
3328 #ifdef CONFIG_P2P
3329                 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
3330                                               data->best_chan.freq_5,
3331                                               data->best_chan.freq_overall);
3332 #endif /* CONFIG_P2P */
3333                 break;
3334         case EVENT_UNPROT_DEAUTH:
3335                 wpa_supplicant_event_unprot_deauth(wpa_s,
3336                                                    &data->unprot_deauth);
3337                 break;
3338         case EVENT_UNPROT_DISASSOC:
3339                 wpa_supplicant_event_unprot_disassoc(wpa_s,
3340                                                      &data->unprot_disassoc);
3341                 break;
3342         case EVENT_STATION_LOW_ACK:
3343 #ifdef CONFIG_AP
3344                 if (wpa_s->ap_iface && data)
3345                         hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
3346                                                   data->low_ack.addr);
3347 #endif /* CONFIG_AP */
3348 #ifdef CONFIG_TDLS
3349                 if (data)
3350                         wpa_tdls_disable_link(wpa_s->wpa, data->low_ack.addr);
3351 #endif /* CONFIG_TDLS */
3352                 break;
3353         case EVENT_IBSS_PEER_LOST:
3354 #ifdef CONFIG_IBSS_RSN
3355                 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
3356 #endif /* CONFIG_IBSS_RSN */
3357                 break;
3358         case EVENT_DRIVER_GTK_REKEY:
3359                 if (os_memcmp(data->driver_gtk_rekey.bssid,
3360                               wpa_s->bssid, ETH_ALEN))
3361                         break;
3362                 if (!wpa_s->wpa)
3363                         break;
3364                 wpa_sm_update_replay_ctr(wpa_s->wpa,
3365                                          data->driver_gtk_rekey.replay_ctr);
3366                 break;
3367         case EVENT_SCHED_SCAN_STOPPED:
3368                 wpa_s->pno = 0;
3369                 wpa_s->sched_scanning = 0;
3370                 wpa_supplicant_notify_scanning(wpa_s, 0);
3371
3372                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
3373                         break;
3374
3375                 /*
3376                  * Start a new sched scan to continue searching for more SSIDs
3377                  * either if timed out or PNO schedule scan is pending.
3378                  */
3379                 if (wpa_s->sched_scan_timed_out) {
3380                         wpa_supplicant_req_sched_scan(wpa_s);
3381                 } else if (wpa_s->pno_sched_pending) {
3382                         wpa_s->pno_sched_pending = 0;
3383                         wpas_start_pno(wpa_s);
3384                 }
3385
3386                 break;
3387         case EVENT_WPS_BUTTON_PUSHED:
3388 #ifdef CONFIG_WPS
3389                 wpas_wps_start_pbc(wpa_s, NULL, 0);
3390 #endif /* CONFIG_WPS */
3391                 break;
3392         case EVENT_AVOID_FREQUENCIES:
3393                 wpa_supplicant_notify_avoid_freq(wpa_s, data);
3394                 break;
3395         case EVENT_CONNECT_FAILED_REASON:
3396 #ifdef CONFIG_AP
3397                 if (!wpa_s->ap_iface || !data)
3398                         break;
3399                 hostapd_event_connect_failed_reason(
3400                         wpa_s->ap_iface->bss[0],
3401                         data->connect_failed_reason.addr,
3402                         data->connect_failed_reason.code);
3403 #endif /* CONFIG_AP */
3404                 break;
3405         default:
3406                 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
3407                 break;
3408         }
3409 }