wpa_supplicant/wpa_supplicant.c

   1 /*
   2  * WPA Supplicant
   3  * Copyright (c) 2003-2016, 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  * This file implements functions for registering and unregistering
   9  * %wpa_supplicant interfaces. In addition, this file contains number of
  10  * functions for managing network connections.
  11  */
  12
  13 #include "includes.h"
  14 #ifdef CONFIG_MATCH_IFACE
  15 #include <net/if.h>
  16 #include <fnmatch.h>
  17 #endif /* CONFIG_MATCH_IFACE */
  18
  19 #include "common.h"
  20 #include "crypto/random.h"
  21 #include "crypto/sha1.h"
  22 #include "eapol_supp/eapol_supp_sm.h"
  23 #include "eap_peer/eap.h"
  24 #include "eap_peer/eap_proxy.h"
  25 #include "eap_server/eap_methods.h"
  26 #include "rsn_supp/wpa.h"
  27 #include "eloop.h"
  28 #include "config.h"
  29 #include "utils/ext_password.h"
  30 #include "l2_packet/l2_packet.h"
  31 #include "wpa_supplicant_i.h"
  32 #include "driver_i.h"
  33 #include "ctrl_iface.h"
  34 #include "pcsc_funcs.h"
  35 #include "common/version.h"
  36 #include "rsn_supp/preauth.h"
  37 #include "rsn_supp/pmksa_cache.h"
  38 #include "common/wpa_ctrl.h"
  39 #include "common/ieee802_11_defs.h"
  40 #include "common/hw_features_common.h"
  41 #include "p2p/p2p.h"
  42 #include "fst/fst.h"
  43 #include "blacklist.h"
  44 #include "wpas_glue.h"
  45 #include "wps_supplicant.h"
  46 #include "ibss_rsn.h"
  47 #include "sme.h"
  48 #include "gas_query.h"
  49 #include "ap.h"
  50 #include "p2p_supplicant.h"
  51 #include "wifi_display.h"
  52 #include "notify.h"
  53 #include "bgscan.h"
  54 #include "autoscan.h"
  55 #include "bss.h"
  56 #include "scan.h"
  57 #include "offchannel.h"
  58 #include "hs20_supplicant.h"
  59 #include "wnm_sta.h"
  60 #include "wpas_kay.h"
  61 #include "mesh.h"
  62
  63 const char *const wpa_supplicant_version =
  64 "wpa_supplicant v" VERSION_STR "\n"
  65 "Copyright (c) 2003-2016, Jouni Malinen <j@w1.fi> and contributors";
  66
  67 const char *const wpa_supplicant_license =
  68 "This software may be distributed under the terms of the BSD license.\n"
  69 "See README for more details.\n"
  70 #ifdef EAP_TLS_OPENSSL
  71 "\nThis product includes software developed by the OpenSSL Project\n"
  72 "for use in the OpenSSL Toolkit (http://www.openssl.org/)\n"
  73 #endif /* EAP_TLS_OPENSSL */
  74 ;
  75
  76 #ifndef CONFIG_NO_STDOUT_DEBUG
  77 /* Long text divided into parts in order to fit in C89 strings size limits. */
  78 const char *const wpa_supplicant_full_license1 =
  79 "";
  80 const char *const wpa_supplicant_full_license2 =
  81 "This software may be distributed under the terms of the BSD license.\n"
  82 "\n"
  83 "Redistribution and use in source and binary forms, with or without\n"
  84 "modification, are permitted provided that the following conditions are\n"
  85 "met:\n"
  86 "\n";
  87 const char *const wpa_supplicant_full_license3 =
  88 "1. Redistributions of source code must retain the above copyright\n"
  89 "   notice, this list of conditions and the following disclaimer.\n"
  90 "\n"
  91 "2. Redistributions in binary form must reproduce the above copyright\n"
  92 "   notice, this list of conditions and the following disclaimer in the\n"
  93 "   documentation and/or other materials provided with the distribution.\n"
  94 "\n";
  95 const char *const wpa_supplicant_full_license4 =
  96 "3. Neither the name(s) of the above-listed copyright holder(s) nor the\n"
  97 "   names of its contributors may be used to endorse or promote products\n"
  98 "   derived from this software without specific prior written permission.\n"
  99 "\n"
 100 "THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS\n"
 101 "\"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT\n"
 102 "LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\n"
 103 "A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT\n";
 104 const char *const wpa_supplicant_full_license5 =
 105 "OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\n"
 106 "SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\n"
 107 "LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n"
 108 "DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n"
 109 "THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n"
 110 "(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n"
 111 "OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n"
 112 "\n";
 113 #endif /* CONFIG_NO_STDOUT_DEBUG */
 114
 115 /* Configure default/group WEP keys for static WEP */
 116 int wpa_set_wep_keys(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid)
 117 {
 118         int i, set = 0;
 119
 120         for (i = 0; i < NUM_WEP_KEYS; i++) {
 121                 if (ssid->wep_key_len[i] == 0)
 122                         continue;
 123
 124                 set = 1;
 125                 wpa_drv_set_key(wpa_s, WPA_ALG_WEP, NULL,
 126                                 i, i == ssid->wep_tx_keyidx, NULL, 0,
 127                                 ssid->wep_key[i], ssid->wep_key_len[i]);
 128         }
 129
 130         return set;
 131 }
 132
 133
 134 int wpa_supplicant_set_wpa_none_key(struct wpa_supplicant *wpa_s,
 135                                     struct wpa_ssid *ssid)
 136 {
 137         u8 key[32];
 138         size_t keylen;
 139         enum wpa_alg alg;
 140         u8 seq[6] = { 0 };
 141         int ret;
 142
 143         /* IBSS/WPA-None uses only one key (Group) for both receiving and
 144          * sending unicast and multicast packets. */
 145
 146         if (ssid->mode != WPAS_MODE_IBSS) {
 147                 wpa_msg(wpa_s, MSG_INFO, "WPA: Invalid mode %d (not "
 148                         "IBSS/ad-hoc) for WPA-None", ssid->mode);
 149                 return -1;
 150         }
 151
 152         if (!ssid->psk_set) {
 153                 wpa_msg(wpa_s, MSG_INFO, "WPA: No PSK configured for "
 154                         "WPA-None");
 155                 return -1;
 156         }
 157
 158         switch (wpa_s->group_cipher) {
 159         case WPA_CIPHER_CCMP:
 160                 os_memcpy(key, ssid->psk, 16);
 161                 keylen = 16;
 162                 alg = WPA_ALG_CCMP;
 163                 break;
 164         case WPA_CIPHER_GCMP:
 165                 os_memcpy(key, ssid->psk, 16);
 166                 keylen = 16;
 167                 alg = WPA_ALG_GCMP;
 168                 break;
 169         case WPA_CIPHER_TKIP:
 170                 /* WPA-None uses the same Michael MIC key for both TX and RX */
 171                 os_memcpy(key, ssid->psk, 16 + 8);
 172                 os_memcpy(key + 16 + 8, ssid->psk + 16, 8);
 173                 keylen = 32;
 174                 alg = WPA_ALG_TKIP;
 175                 break;
 176         default:
 177                 wpa_msg(wpa_s, MSG_INFO, "WPA: Invalid group cipher %d for "
 178                         "WPA-None", wpa_s->group_cipher);
 179                 return -1;
 180         }
 181
 182         /* TODO: should actually remember the previously used seq#, both for TX
 183          * and RX from each STA.. */
 184
 185         ret = wpa_drv_set_key(wpa_s, alg, NULL, 0, 1, seq, 6, key, keylen);
 186         os_memset(key, 0, sizeof(key));
 187         return ret;
 188 }
 189
 190
 191 static void wpa_supplicant_timeout(void *eloop_ctx, void *timeout_ctx)
 192 {
 193         struct wpa_supplicant *wpa_s = eloop_ctx;
 194         const u8 *bssid = wpa_s->bssid;
 195         if (is_zero_ether_addr(bssid))
 196                 bssid = wpa_s->pending_bssid;
 197         wpa_msg(wpa_s, MSG_INFO, "Authentication with " MACSTR " timed out.",
 198                 MAC2STR(bssid));
 199         wpa_blacklist_add(wpa_s, bssid);
 200         wpa_sm_notify_disassoc(wpa_s->wpa);
 201         wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 202         wpa_s->reassociate = 1;
 203
 204         /*
 205          * If we timed out, the AP or the local radio may be busy.
 206          * So, wait a second until scanning again.
 207          */
 208         wpa_supplicant_req_scan(wpa_s, 1, 0);
 209 }
 210
 211
 212 /**
 213  * wpa_supplicant_req_auth_timeout - Schedule a timeout for authentication
 214  * @wpa_s: Pointer to wpa_supplicant data
 215  * @sec: Number of seconds after which to time out authentication
 216  * @usec: Number of microseconds after which to time out authentication
 217  *
 218  * This function is used to schedule a timeout for the current authentication
 219  * attempt.
 220  */
 221 void wpa_supplicant_req_auth_timeout(struct wpa_supplicant *wpa_s,
 222                                      int sec, int usec)
 223 {
 224         if (wpa_s->conf->ap_scan == 0 &&
 225             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED))
 226                 return;
 227
 228         wpa_dbg(wpa_s, MSG_DEBUG, "Setting authentication timeout: %d sec "
 229                 "%d usec", sec, usec);
 230         eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
 231         eloop_register_timeout(sec, usec, wpa_supplicant_timeout, wpa_s, NULL);
 232 }
 233
 234
 235 /**
 236  * wpa_supplicant_cancel_auth_timeout - Cancel authentication timeout
 237  * @wpa_s: Pointer to wpa_supplicant data
 238  *
 239  * This function is used to cancel authentication timeout scheduled with
 240  * wpa_supplicant_req_auth_timeout() and it is called when authentication has
 241  * been completed.
 242  */
 243 void wpa_supplicant_cancel_auth_timeout(struct wpa_supplicant *wpa_s)
 244 {
 245         wpa_dbg(wpa_s, MSG_DEBUG, "Cancelling authentication timeout");
 246         eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
 247         wpa_blacklist_del(wpa_s, wpa_s->bssid);
 248 }
 249
 250
 251 /**
 252  * wpa_supplicant_initiate_eapol - Configure EAPOL state machine
 253  * @wpa_s: Pointer to wpa_supplicant data
 254  *
 255  * This function is used to configure EAPOL state machine based on the selected
 256  * authentication mode.
 257  */
 258 void wpa_supplicant_initiate_eapol(struct wpa_supplicant *wpa_s)
 259 {
 260 #ifdef IEEE8021X_EAPOL
 261         struct eapol_config eapol_conf;
 262         struct wpa_ssid *ssid = wpa_s->current_ssid;
 263
 264 #ifdef CONFIG_IBSS_RSN
 265         if (ssid->mode == WPAS_MODE_IBSS &&
 266             wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
 267             wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) {
 268                 /*
 269                  * RSN IBSS authentication is per-STA and we can disable the
 270                  * per-BSSID EAPOL authentication.
 271                  */
 272                 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized);
 273                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
 274                 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE);
 275                 return;
 276         }
 277 #endif /* CONFIG_IBSS_RSN */
 278
 279         eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 280         eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE);
 281
 282         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 283             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
 284                 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized);
 285         else
 286                 eapol_sm_notify_portControl(wpa_s->eapol, Auto);
 287
 288         os_memset(&eapol_conf, 0, sizeof(eapol_conf));
 289         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
 290                 eapol_conf.accept_802_1x_keys = 1;
 291                 eapol_conf.required_keys = 0;
 292                 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_UNICAST) {
 293                         eapol_conf.required_keys |= EAPOL_REQUIRE_KEY_UNICAST;
 294                 }
 295                 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_BROADCAST) {
 296                         eapol_conf.required_keys |=
 297                                 EAPOL_REQUIRE_KEY_BROADCAST;
 298                 }
 299
 300                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED)
 301                         eapol_conf.required_keys = 0;
 302         }
 303         eapol_conf.fast_reauth = wpa_s->conf->fast_reauth;
 304         eapol_conf.workaround = ssid->eap_workaround;
 305         eapol_conf.eap_disabled =
 306                 !wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) &&
 307                 wpa_s->key_mgmt != WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
 308                 wpa_s->key_mgmt != WPA_KEY_MGMT_WPS;
 309         eapol_conf.external_sim = wpa_s->conf->external_sim;
 310
 311 #ifdef CONFIG_WPS
 312         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) {
 313                 eapol_conf.wps |= EAPOL_LOCAL_WPS_IN_USE;
 314                 if (wpa_s->current_bss) {
 315                         struct wpabuf *ie;
 316                         ie = wpa_bss_get_vendor_ie_multi(wpa_s->current_bss,
 317                                                          WPS_IE_VENDOR_TYPE);
 318                         if (ie) {
 319                                 if (wps_is_20(ie))
 320                                         eapol_conf.wps |=
 321                                                 EAPOL_PEER_IS_WPS20_AP;
 322                                 wpabuf_free(ie);
 323                         }
 324                 }
 325         }
 326 #endif /* CONFIG_WPS */
 327
 328         eapol_sm_notify_config(wpa_s->eapol, &ssid->eap, &eapol_conf);
 329
 330         ieee802_1x_alloc_kay_sm(wpa_s, ssid);
 331 #endif /* IEEE8021X_EAPOL */
 332 }
 333
 334
 335 /**
 336  * wpa_supplicant_set_non_wpa_policy - Set WPA parameters to non-WPA mode
 337  * @wpa_s: Pointer to wpa_supplicant data
 338  * @ssid: Configuration data for the network
 339  *
 340  * This function is used to configure WPA state machine and related parameters
 341  * to a mode where WPA is not enabled. This is called as part of the
 342  * authentication configuration when the selected network does not use WPA.
 343  */
 344 void wpa_supplicant_set_non_wpa_policy(struct wpa_supplicant *wpa_s,
 345                                        struct wpa_ssid *ssid)
 346 {
 347         int i;
 348
 349         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
 350                 wpa_s->key_mgmt = WPA_KEY_MGMT_WPS;
 351         else if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)
 352                 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA;
 353         else
 354                 wpa_s->key_mgmt = WPA_KEY_MGMT_NONE;
 355         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
 356         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
 357         wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
 358         wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
 359         wpa_s->group_cipher = WPA_CIPHER_NONE;
 360         wpa_s->mgmt_group_cipher = 0;
 361
 362         for (i = 0; i < NUM_WEP_KEYS; i++) {
 363                 if (ssid->wep_key_len[i] > 5) {
 364                         wpa_s->pairwise_cipher = WPA_CIPHER_WEP104;
 365                         wpa_s->group_cipher = WPA_CIPHER_WEP104;
 366                         break;
 367                 } else if (ssid->wep_key_len[i] > 0) {
 368                         wpa_s->pairwise_cipher = WPA_CIPHER_WEP40;
 369                         wpa_s->group_cipher = WPA_CIPHER_WEP40;
 370                         break;
 371                 }
 372         }
 373
 374         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED, 0);
 375         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt);
 376         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE,
 377                          wpa_s->pairwise_cipher);
 378         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher);
 379 #ifdef CONFIG_IEEE80211W
 380         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP,
 381                          wpa_s->mgmt_group_cipher);
 382 #endif /* CONFIG_IEEE80211W */
 383
 384         pmksa_cache_clear_current(wpa_s->wpa);
 385 }
 386
 387
 388 void free_hw_features(struct wpa_supplicant *wpa_s)
 389 {
 390         int i;
 391         if (wpa_s->hw.modes == NULL)
 392                 return;
 393
 394         for (i = 0; i < wpa_s->hw.num_modes; i++) {
 395                 os_free(wpa_s->hw.modes[i].channels);
 396                 os_free(wpa_s->hw.modes[i].rates);
 397         }
 398
 399         os_free(wpa_s->hw.modes);
 400         wpa_s->hw.modes = NULL;
 401 }
 402
 403
 404 static void free_bss_tmp_disallowed(struct wpa_supplicant *wpa_s)
 405 {
 406         struct wpa_bss_tmp_disallowed *bss, *prev;
 407
 408         dl_list_for_each_safe(bss, prev, &wpa_s->bss_tmp_disallowed,
 409                               struct wpa_bss_tmp_disallowed, list) {
 410                 dl_list_del(&bss->list);
 411                 os_free(bss);
 412         }
 413 }
 414
 415
 416 static void wpa_supplicant_cleanup(struct wpa_supplicant *wpa_s)
 417 {
 418         int i;
 419
 420         bgscan_deinit(wpa_s);
 421         autoscan_deinit(wpa_s);
 422         scard_deinit(wpa_s->scard);
 423         wpa_s->scard = NULL;
 424         wpa_sm_set_scard_ctx(wpa_s->wpa, NULL);
 425         eapol_sm_register_scard_ctx(wpa_s->eapol, NULL);
 426         l2_packet_deinit(wpa_s->l2);
 427         wpa_s->l2 = NULL;
 428         if (wpa_s->l2_br) {
 429                 l2_packet_deinit(wpa_s->l2_br);
 430                 wpa_s->l2_br = NULL;
 431         }
 432 #ifdef CONFIG_TESTING_OPTIONS
 433         l2_packet_deinit(wpa_s->l2_test);
 434         wpa_s->l2_test = NULL;
 435 #endif /* CONFIG_TESTING_OPTIONS */
 436
 437         if (wpa_s->conf != NULL) {
 438                 struct wpa_ssid *ssid;
 439                 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next)
 440                         wpas_notify_network_removed(wpa_s, ssid);
 441         }
 442
 443         os_free(wpa_s->confname);
 444         wpa_s->confname = NULL;
 445
 446         os_free(wpa_s->confanother);
 447         wpa_s->confanother = NULL;
 448
 449         wpa_sm_set_eapol(wpa_s->wpa, NULL);
 450         eapol_sm_deinit(wpa_s->eapol);
 451         wpa_s->eapol = NULL;
 452
 453         rsn_preauth_deinit(wpa_s->wpa);
 454
 455 #ifdef CONFIG_TDLS
 456         wpa_tdls_deinit(wpa_s->wpa);
 457 #endif /* CONFIG_TDLS */
 458
 459         wmm_ac_clear_saved_tspecs(wpa_s);
 460         pmksa_candidate_free(wpa_s->wpa);
 461         wpa_sm_deinit(wpa_s->wpa);
 462         wpa_s->wpa = NULL;
 463         wpa_blacklist_clear(wpa_s);
 464
 465         wpa_bss_deinit(wpa_s);
 466
 467         wpa_supplicant_cancel_delayed_sched_scan(wpa_s);
 468         wpa_supplicant_cancel_scan(wpa_s);
 469         wpa_supplicant_cancel_auth_timeout(wpa_s);
 470         eloop_cancel_timeout(wpa_supplicant_stop_countermeasures, wpa_s, NULL);
 471 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
 472         eloop_cancel_timeout(wpa_supplicant_delayed_mic_error_report,
 473                              wpa_s, NULL);
 474 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
 475
 476         eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL);
 477
 478         wpas_wps_deinit(wpa_s);
 479
 480         wpabuf_free(wpa_s->pending_eapol_rx);
 481         wpa_s->pending_eapol_rx = NULL;
 482
 483 #ifdef CONFIG_IBSS_RSN
 484         ibss_rsn_deinit(wpa_s->ibss_rsn);
 485         wpa_s->ibss_rsn = NULL;
 486 #endif /* CONFIG_IBSS_RSN */
 487
 488         sme_deinit(wpa_s);
 489
 490 #ifdef CONFIG_AP
 491         wpa_supplicant_ap_deinit(wpa_s);
 492 #endif /* CONFIG_AP */
 493
 494         wpas_p2p_deinit(wpa_s);
 495
 496 #ifdef CONFIG_OFFCHANNEL
 497         offchannel_deinit(wpa_s);
 498 #endif /* CONFIG_OFFCHANNEL */
 499
 500         wpa_supplicant_cancel_sched_scan(wpa_s);
 501
 502         os_free(wpa_s->next_scan_freqs);
 503         wpa_s->next_scan_freqs = NULL;
 504
 505         os_free(wpa_s->manual_scan_freqs);
 506         wpa_s->manual_scan_freqs = NULL;
 507
 508         os_free(wpa_s->manual_sched_scan_freqs);
 509         wpa_s->manual_sched_scan_freqs = NULL;
 510
 511         wpas_mac_addr_rand_scan_clear(wpa_s, MAC_ADDR_RAND_ALL);
 512
 513         /*
 514          * Need to remove any pending gas-query radio work before the
 515          * gas_query_deinit() call because gas_query::work has not yet been set
 516          * for works that have not been started. gas_query_free() will be unable
 517          * to cancel such pending radio works and once the pending gas-query
 518          * radio work eventually gets removed, the deinit notification call to
 519          * gas_query_start_cb() would result in dereferencing freed memory.
 520          */
 521         if (wpa_s->radio)
 522                 radio_remove_works(wpa_s, "gas-query", 0);
 523         gas_query_deinit(wpa_s->gas);
 524         wpa_s->gas = NULL;
 525
 526         free_hw_features(wpa_s);
 527
 528         ieee802_1x_dealloc_kay_sm(wpa_s);
 529
 530         os_free(wpa_s->bssid_filter);
 531         wpa_s->bssid_filter = NULL;
 532
 533         os_free(wpa_s->disallow_aps_bssid);
 534         wpa_s->disallow_aps_bssid = NULL;
 535         os_free(wpa_s->disallow_aps_ssid);
 536         wpa_s->disallow_aps_ssid = NULL;
 537
 538         wnm_bss_keep_alive_deinit(wpa_s);
 539 #ifdef CONFIG_WNM
 540         wnm_deallocate_memory(wpa_s);
 541 #endif /* CONFIG_WNM */
 542
 543         ext_password_deinit(wpa_s->ext_pw);
 544         wpa_s->ext_pw = NULL;
 545
 546         wpabuf_free(wpa_s->last_gas_resp);
 547         wpa_s->last_gas_resp = NULL;
 548         wpabuf_free(wpa_s->prev_gas_resp);
 549         wpa_s->prev_gas_resp = NULL;
 550
 551         os_free(wpa_s->last_scan_res);
 552         wpa_s->last_scan_res = NULL;
 553
 554 #ifdef CONFIG_HS20
 555         if (wpa_s->drv_priv)
 556                 wpa_drv_configure_frame_filters(wpa_s, 0);
 557         hs20_deinit(wpa_s);
 558 #endif /* CONFIG_HS20 */
 559
 560         for (i = 0; i < NUM_VENDOR_ELEM_FRAMES; i++) {
 561                 wpabuf_free(wpa_s->vendor_elem[i]);
 562                 wpa_s->vendor_elem[i] = NULL;
 563         }
 564
 565         wmm_ac_notify_disassoc(wpa_s);
 566
 567         wpa_s->sched_scan_plans_num = 0;
 568         os_free(wpa_s->sched_scan_plans);
 569         wpa_s->sched_scan_plans = NULL;
 570
 571 #ifdef CONFIG_MBO
 572         wpa_s->non_pref_chan_num = 0;
 573         os_free(wpa_s->non_pref_chan);
 574         wpa_s->non_pref_chan = NULL;
 575 #endif /* CONFIG_MBO */
 576
 577         free_bss_tmp_disallowed(wpa_s);
 578
 579         wpabuf_free(wpa_s->lci);
 580         wpa_s->lci = NULL;
 581 }
 582
 583
 584 /**
 585  * wpa_clear_keys - Clear keys configured for the driver
 586  * @wpa_s: Pointer to wpa_supplicant data
 587  * @addr: Previously used BSSID or %NULL if not available
 588  *
 589  * This function clears the encryption keys that has been previously configured
 590  * for the driver.
 591  */
 592 void wpa_clear_keys(struct wpa_supplicant *wpa_s, const u8 *addr)
 593 {
 594         int i, max;
 595
 596 #ifdef CONFIG_IEEE80211W
 597         max = 6;
 598 #else /* CONFIG_IEEE80211W */
 599         max = 4;
 600 #endif /* CONFIG_IEEE80211W */
 601
 602         /* MLME-DELETEKEYS.request */
 603         for (i = 0; i < max; i++) {
 604                 if (wpa_s->keys_cleared & BIT(i))
 605                         continue;
 606                 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, i, 0, NULL, 0,
 607                                 NULL, 0);
 608         }
 609         if (!(wpa_s->keys_cleared & BIT(0)) && addr &&
 610             !is_zero_ether_addr(addr)) {
 611                 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, addr, 0, 0, NULL, 0, NULL,
 612                                 0);
 613                 /* MLME-SETPROTECTION.request(None) */
 614                 wpa_drv_mlme_setprotection(
 615                         wpa_s, addr,
 616                         MLME_SETPROTECTION_PROTECT_TYPE_NONE,
 617                         MLME_SETPROTECTION_KEY_TYPE_PAIRWISE);
 618         }
 619         wpa_s->keys_cleared = (u32) -1;
 620 }
 621
 622
 623 /**
 624  * wpa_supplicant_state_txt - Get the connection state name as a text string
 625  * @state: State (wpa_state; WPA_*)
 626  * Returns: The state name as a printable text string
 627  */
 628 const char * wpa_supplicant_state_txt(enum wpa_states state)
 629 {
 630         switch (state) {
 631         case WPA_DISCONNECTED:
 632                 return "DISCONNECTED";
 633         case WPA_INACTIVE:
 634                 return "INACTIVE";
 635         case WPA_INTERFACE_DISABLED:
 636                 return "INTERFACE_DISABLED";
 637         case WPA_SCANNING:
 638                 return "SCANNING";
 639         case WPA_AUTHENTICATING:
 640                 return "AUTHENTICATING";
 641         case WPA_ASSOCIATING:
 642                 return "ASSOCIATING";
 643         case WPA_ASSOCIATED:
 644                 return "ASSOCIATED";
 645         case WPA_4WAY_HANDSHAKE:
 646                 return "4WAY_HANDSHAKE";
 647         case WPA_GROUP_HANDSHAKE:
 648                 return "GROUP_HANDSHAKE";
 649         case WPA_COMPLETED:
 650                 return "COMPLETED";
 651         default:
 652                 return "UNKNOWN";
 653         }
 654 }
 655
 656
 657 #ifdef CONFIG_BGSCAN
 658
 659 static void wpa_supplicant_start_bgscan(struct wpa_supplicant *wpa_s)
 660 {
 661         const char *name;
 662
 663         if (wpa_s->current_ssid && wpa_s->current_ssid->bgscan)
 664                 name = wpa_s->current_ssid->bgscan;
 665         else
 666                 name = wpa_s->conf->bgscan;
 667         if (name == NULL || name[0] == '\0')
 668                 return;
 669         if (wpas_driver_bss_selection(wpa_s))
 670                 return;
 671         if (wpa_s->current_ssid == wpa_s->bgscan_ssid)
 672                 return;
 673 #ifdef CONFIG_P2P
 674         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
 675                 return;
 676 #endif /* CONFIG_P2P */
 677
 678         bgscan_deinit(wpa_s);
 679         if (wpa_s->current_ssid) {
 680                 if (bgscan_init(wpa_s, wpa_s->current_ssid, name)) {
 681                         wpa_dbg(wpa_s, MSG_DEBUG, "Failed to initialize "
 682                                 "bgscan");
 683                         /*
 684                          * Live without bgscan; it is only used as a roaming
 685                          * optimization, so the initial connection is not
 686                          * affected.
 687                          */
 688                 } else {
 689                         struct wpa_scan_results *scan_res;
 690                         wpa_s->bgscan_ssid = wpa_s->current_ssid;
 691                         scan_res = wpa_supplicant_get_scan_results(wpa_s, NULL,
 692                                                                    0);
 693                         if (scan_res) {
 694                                 bgscan_notify_scan(wpa_s, scan_res);
 695                                 wpa_scan_results_free(scan_res);
 696                         }
 697                 }
 698         } else
 699                 wpa_s->bgscan_ssid = NULL;
 700 }
 701
 702
 703 static void wpa_supplicant_stop_bgscan(struct wpa_supplicant *wpa_s)
 704 {
 705         if (wpa_s->bgscan_ssid != NULL) {
 706                 bgscan_deinit(wpa_s);
 707                 wpa_s->bgscan_ssid = NULL;
 708         }
 709 }
 710
 711 #endif /* CONFIG_BGSCAN */
 712
 713
 714 static void wpa_supplicant_start_autoscan(struct wpa_supplicant *wpa_s)
 715 {
 716         if (autoscan_init(wpa_s, 0))
 717                 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to initialize autoscan");
 718 }
 719
 720
 721 static void wpa_supplicant_stop_autoscan(struct wpa_supplicant *wpa_s)
 722 {
 723         autoscan_deinit(wpa_s);
 724 }
 725
 726
 727 void wpa_supplicant_reinit_autoscan(struct wpa_supplicant *wpa_s)
 728 {
 729         if (wpa_s->wpa_state == WPA_DISCONNECTED ||
 730             wpa_s->wpa_state == WPA_SCANNING) {
 731                 autoscan_deinit(wpa_s);
 732                 wpa_supplicant_start_autoscan(wpa_s);
 733         }
 734 }
 735
 736
 737 /**
 738  * wpa_supplicant_set_state - Set current connection state
 739  * @wpa_s: Pointer to wpa_supplicant data
 740  * @state: The new connection state
 741  *
 742  * This function is called whenever the connection state changes, e.g.,
 743  * association is completed for WPA/WPA2 4-Way Handshake is started.
 744  */
 745 void wpa_supplicant_set_state(struct wpa_supplicant *wpa_s,
 746                               enum wpa_states state)
 747 {
 748         enum wpa_states old_state = wpa_s->wpa_state;
 749
 750         wpa_dbg(wpa_s, MSG_DEBUG, "State: %s -> %s",
 751                 wpa_supplicant_state_txt(wpa_s->wpa_state),
 752                 wpa_supplicant_state_txt(state));
 753
 754         if (state == WPA_INTERFACE_DISABLED) {
 755                 /* Assure normal scan when interface is restored */
 756                 wpa_s->normal_scans = 0;
 757         }
 758
 759         if (state == WPA_COMPLETED) {
 760                 wpas_connect_work_done(wpa_s);
 761                 /* Reinitialize normal_scan counter */
 762                 wpa_s->normal_scans = 0;
 763         }
 764
 765 #ifdef CONFIG_P2P
 766         /*
 767          * P2PS client has to reply to Probe Request frames received on the
 768          * group operating channel. Enable Probe Request frame reporting for
 769          * P2P connected client in case p2p_cli_probe configuration property is
 770          * set to 1.
 771          */
 772         if (wpa_s->conf->p2p_cli_probe && wpa_s->current_ssid &&
 773             wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
 774             wpa_s->current_ssid->p2p_group) {
 775                 if (state == WPA_COMPLETED && !wpa_s->p2p_cli_probe) {
 776                         wpa_dbg(wpa_s, MSG_DEBUG,
 777                                 "P2P: Enable CLI Probe Request RX reporting");
 778                         wpa_s->p2p_cli_probe =
 779                                 wpa_drv_probe_req_report(wpa_s, 1) >= 0;
 780                 } else if (state != WPA_COMPLETED && wpa_s->p2p_cli_probe) {
 781                         wpa_dbg(wpa_s, MSG_DEBUG,
 782                                 "P2P: Disable CLI Probe Request RX reporting");
 783                         wpa_s->p2p_cli_probe = 0;
 784                         wpa_drv_probe_req_report(wpa_s, 0);
 785                 }
 786         }
 787 #endif /* CONFIG_P2P */
 788
 789         if (state != WPA_SCANNING)
 790                 wpa_supplicant_notify_scanning(wpa_s, 0);
 791
 792         if (state == WPA_COMPLETED && wpa_s->new_connection) {
 793                 struct wpa_ssid *ssid = wpa_s->current_ssid;
 794 #if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG)
 795                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_CONNECTED "- Connection to "
 796                         MACSTR " completed [id=%d id_str=%s]",
 797                         MAC2STR(wpa_s->bssid),
 798                         ssid ? ssid->id : -1,
 799                         ssid && ssid->id_str ? ssid->id_str : "");
 800 #endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
 801                 wpas_clear_temp_disabled(wpa_s, ssid, 1);
 802                 wpa_blacklist_clear(wpa_s);
 803                 wpa_s->extra_blacklist_count = 0;
 804                 wpa_s->new_connection = 0;
 805                 wpa_drv_set_operstate(wpa_s, 1);
 806 #ifndef IEEE8021X_EAPOL
 807                 wpa_drv_set_supp_port(wpa_s, 1);
 808 #endif /* IEEE8021X_EAPOL */
 809                 wpa_s->after_wps = 0;
 810                 wpa_s->known_wps_freq = 0;
 811                 wpas_p2p_completed(wpa_s);
 812
 813                 sme_sched_obss_scan(wpa_s, 1);
 814         } else if (state == WPA_DISCONNECTED || state == WPA_ASSOCIATING ||
 815                    state == WPA_ASSOCIATED) {
 816                 wpa_s->new_connection = 1;
 817                 wpa_drv_set_operstate(wpa_s, 0);
 818 #ifndef IEEE8021X_EAPOL
 819                 wpa_drv_set_supp_port(wpa_s, 0);
 820 #endif /* IEEE8021X_EAPOL */
 821                 sme_sched_obss_scan(wpa_s, 0);
 822         }
 823         wpa_s->wpa_state = state;
 824
 825 #ifdef CONFIG_BGSCAN
 826         if (state == WPA_COMPLETED)
 827                 wpa_supplicant_start_bgscan(wpa_s);
 828         else if (state < WPA_ASSOCIATED)
 829                 wpa_supplicant_stop_bgscan(wpa_s);
 830 #endif /* CONFIG_BGSCAN */
 831
 832         if (state == WPA_AUTHENTICATING)
 833                 wpa_supplicant_stop_autoscan(wpa_s);
 834
 835         if (state == WPA_DISCONNECTED || state == WPA_INACTIVE)
 836                 wpa_supplicant_start_autoscan(wpa_s);
 837
 838         if (old_state >= WPA_ASSOCIATED && wpa_s->wpa_state < WPA_ASSOCIATED)
 839                 wmm_ac_notify_disassoc(wpa_s);
 840
 841         if (wpa_s->wpa_state != old_state) {
 842                 wpas_notify_state_changed(wpa_s, wpa_s->wpa_state, old_state);
 843
 844                 /*
 845                  * Notify the P2P Device interface about a state change in one
 846                  * of the interfaces.
 847                  */
 848                 wpas_p2p_indicate_state_change(wpa_s);
 849
 850                 if (wpa_s->wpa_state == WPA_COMPLETED ||
 851                     old_state == WPA_COMPLETED)
 852                         wpas_notify_auth_changed(wpa_s);
 853         }
 854 }
 855
 856
 857 void wpa_supplicant_terminate_proc(struct wpa_global *global)
 858 {
 859         int pending = 0;
 860 #ifdef CONFIG_WPS
 861         struct wpa_supplicant *wpa_s = global->ifaces;
 862         while (wpa_s) {
 863                 struct wpa_supplicant *next = wpa_s->next;
 864                 if (wpas_wps_terminate_pending(wpa_s) == 1)
 865                         pending = 1;
 866 #ifdef CONFIG_P2P
 867                 if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE ||
 868                     (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group))
 869                         wpas_p2p_disconnect(wpa_s);
 870 #endif /* CONFIG_P2P */
 871                 wpa_s = next;
 872         }
 873 #endif /* CONFIG_WPS */
 874         if (pending)
 875                 return;
 876         eloop_terminate();
 877 }
 878
 879
 880 static void wpa_supplicant_terminate(int sig, void *signal_ctx)
 881 {
 882         struct wpa_global *global = signal_ctx;
 883         wpa_supplicant_terminate_proc(global);
 884 }
 885
 886
 887 void wpa_supplicant_clear_status(struct wpa_supplicant *wpa_s)
 888 {
 889         enum wpa_states old_state = wpa_s->wpa_state;
 890
 891         wpa_s->pairwise_cipher = 0;
 892         wpa_s->group_cipher = 0;
 893         wpa_s->mgmt_group_cipher = 0;
 894         wpa_s->key_mgmt = 0;
 895         if (wpa_s->wpa_state != WPA_INTERFACE_DISABLED)
 896                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 897
 898         if (wpa_s->wpa_state != old_state)
 899                 wpas_notify_state_changed(wpa_s, wpa_s->wpa_state, old_state);
 900 }
 901
 902
 903 /**
 904  * wpa_supplicant_reload_configuration - Reload configuration data
 905  * @wpa_s: Pointer to wpa_supplicant data
 906  * Returns: 0 on success or -1 if configuration parsing failed
 907  *
 908  * This function can be used to request that the configuration data is reloaded
 909  * (e.g., after configuration file change). This function is reloading
 910  * configuration only for one interface, so this may need to be called multiple
 911  * times if %wpa_supplicant is controlling multiple interfaces and all
 912  * interfaces need reconfiguration.
 913  */
 914 int wpa_supplicant_reload_configuration(struct wpa_supplicant *wpa_s)
 915 {
 916         struct wpa_config *conf;
 917         int reconf_ctrl;
 918         int old_ap_scan;
 919
 920         if (wpa_s->confname == NULL)
 921                 return -1;
 922         conf = wpa_config_read(wpa_s->confname, NULL);
 923         if (conf == NULL) {
 924                 wpa_msg(wpa_s, MSG_ERROR, "Failed to parse the configuration "
 925                         "file '%s' - exiting", wpa_s->confname);
 926                 return -1;
 927         }
 928         wpa_config_read(wpa_s->confanother, conf);
 929
 930         conf->changed_parameters = (unsigned int) -1;
 931
 932         reconf_ctrl = !!conf->ctrl_interface != !!wpa_s->conf->ctrl_interface
 933                 || (conf->ctrl_interface && wpa_s->conf->ctrl_interface &&
 934                     os_strcmp(conf->ctrl_interface,
 935                               wpa_s->conf->ctrl_interface) != 0);
 936
 937         if (reconf_ctrl && wpa_s->ctrl_iface) {
 938                 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
 939                 wpa_s->ctrl_iface = NULL;
 940         }
 941
 942         eapol_sm_invalidate_cached_session(wpa_s->eapol);
 943         if (wpa_s->current_ssid) {
 944                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
 945                         wpa_s->own_disconnect_req = 1;
 946                 wpa_supplicant_deauthenticate(wpa_s,
 947                                               WLAN_REASON_DEAUTH_LEAVING);
 948         }
 949
 950         /*
 951          * TODO: should notify EAPOL SM about changes in opensc_engine_path,
 952          * pkcs11_engine_path, pkcs11_module_path, openssl_ciphers.
 953          */
 954         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
 955                 /*
 956                  * Clear forced success to clear EAP state for next
 957                  * authentication.
 958                  */
 959                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 960         }
 961         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 962         wpa_sm_set_config(wpa_s->wpa, NULL);
 963         wpa_sm_pmksa_cache_flush(wpa_s->wpa, NULL);
 964         wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth);
 965         rsn_preauth_deinit(wpa_s->wpa);
 966
 967         old_ap_scan = wpa_s->conf->ap_scan;
 968         wpa_config_free(wpa_s->conf);
 969         wpa_s->conf = conf;
 970         if (old_ap_scan != wpa_s->conf->ap_scan)
 971                 wpas_notify_ap_scan_changed(wpa_s);
 972
 973         if (reconf_ctrl)
 974                 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s);
 975
 976         wpa_supplicant_update_config(wpa_s);
 977
 978         wpa_supplicant_clear_status(wpa_s);
 979         if (wpa_supplicant_enabled_networks(wpa_s)) {
 980                 wpa_s->reassociate = 1;
 981                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 982         }
 983         wpa_dbg(wpa_s, MSG_DEBUG, "Reconfiguration completed");
 984         return 0;
 985 }
 986
 987
 988 static void wpa_supplicant_reconfig(int sig, void *signal_ctx)
 989 {
 990         struct wpa_global *global = signal_ctx;
 991         struct wpa_supplicant *wpa_s;
 992         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 993                 wpa_dbg(wpa_s, MSG_DEBUG, "Signal %d received - reconfiguring",
 994                         sig);
 995                 if (wpa_supplicant_reload_configuration(wpa_s) < 0) {
 996                         wpa_supplicant_terminate_proc(global);
 997                 }
 998         }
 999
1000         if (wpa_debug_reopen_file() < 0) {
1001                 /* Ignore errors since we cannot really do much to fix this */
1002                 wpa_printf(MSG_DEBUG, "Could not reopen debug log file");
1003         }
1004 }
1005
1006
1007 static int wpa_supplicant_suites_from_ai(struct wpa_supplicant *wpa_s,
1008                                          struct wpa_ssid *ssid,
1009                                          struct wpa_ie_data *ie)
1010 {
1011         int ret = wpa_sm_parse_own_wpa_ie(wpa_s->wpa, ie);
1012         if (ret) {
1013                 if (ret == -2) {
1014                         wpa_msg(wpa_s, MSG_INFO, "WPA: Failed to parse WPA IE "
1015                                 "from association info");
1016                 }
1017                 return -1;
1018         }
1019
1020         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Using WPA IE from AssocReq to set "
1021                 "cipher suites");
1022         if (!(ie->group_cipher & ssid->group_cipher)) {
1023                 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled group "
1024                         "cipher 0x%x (mask 0x%x) - reject",
1025                         ie->group_cipher, ssid->group_cipher);
1026                 return -1;
1027         }
1028         if (!(ie->pairwise_cipher & ssid->pairwise_cipher)) {
1029                 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled pairwise "
1030                         "cipher 0x%x (mask 0x%x) - reject",
1031                         ie->pairwise_cipher, ssid->pairwise_cipher);
1032                 return -1;
1033         }
1034         if (!(ie->key_mgmt & ssid->key_mgmt)) {
1035                 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled key "
1036                         "management 0x%x (mask 0x%x) - reject",
1037                         ie->key_mgmt, ssid->key_mgmt);
1038                 return -1;
1039         }
1040
1041 #ifdef CONFIG_IEEE80211W
1042         if (!(ie->capabilities & WPA_CAPABILITY_MFPC) &&
1043             wpas_get_ssid_pmf(wpa_s, ssid) == MGMT_FRAME_PROTECTION_REQUIRED) {
1044                 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver associated with an AP "
1045                         "that does not support management frame protection - "
1046                         "reject");
1047                 return -1;
1048         }
1049 #endif /* CONFIG_IEEE80211W */
1050
1051         return 0;
1052 }
1053
1054
1055 /**
1056  * wpa_supplicant_set_suites - Set authentication and encryption parameters
1057  * @wpa_s: Pointer to wpa_supplicant data
1058  * @bss: Scan results for the selected BSS, or %NULL if not available
1059  * @ssid: Configuration data for the selected network
1060  * @wpa_ie: Buffer for the WPA/RSN IE
1061  * @wpa_ie_len: Maximum wpa_ie buffer size on input. This is changed to be the
1062  * used buffer length in case the functions returns success.
1063  * Returns: 0 on success or -1 on failure
1064  *
1065  * This function is used to configure authentication and encryption parameters
1066  * based on the network configuration and scan result for the selected BSS (if
1067  * available).
1068  */
1069 int wpa_supplicant_set_suites(struct wpa_supplicant *wpa_s,
1070                               struct wpa_bss *bss, struct wpa_ssid *ssid,
1071                               u8 *wpa_ie, size_t *wpa_ie_len)
1072 {
1073         struct wpa_ie_data ie;
1074         int sel, proto;
1075         const u8 *bss_wpa, *bss_rsn, *bss_osen;
1076
1077         if (bss) {
1078                 bss_wpa = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
1079                 bss_rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1080                 bss_osen = wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE);
1081         } else
1082                 bss_wpa = bss_rsn = bss_osen = NULL;
1083
1084         if (bss_rsn && (ssid->proto & WPA_PROTO_RSN) &&
1085             wpa_parse_wpa_ie(bss_rsn, 2 + bss_rsn[1], &ie) == 0 &&
1086             (ie.group_cipher & ssid->group_cipher) &&
1087             (ie.pairwise_cipher & ssid->pairwise_cipher) &&
1088             (ie.key_mgmt & ssid->key_mgmt)) {
1089                 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: using IEEE 802.11i/D9.0");
1090                 proto = WPA_PROTO_RSN;
1091         } else if (bss_wpa && (ssid->proto & WPA_PROTO_WPA) &&
1092                    wpa_parse_wpa_ie(bss_wpa, 2 + bss_wpa[1], &ie) == 0 &&
1093                    (ie.group_cipher & ssid->group_cipher) &&
1094                    (ie.pairwise_cipher & ssid->pairwise_cipher) &&
1095                    (ie.key_mgmt & ssid->key_mgmt)) {
1096                 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using IEEE 802.11i/D3.0");
1097                 proto = WPA_PROTO_WPA;
1098 #ifdef CONFIG_HS20
1099         } else if (bss_osen && (ssid->proto & WPA_PROTO_OSEN)) {
1100                 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: using OSEN");
1101                 /* TODO: parse OSEN element */
1102                 os_memset(&ie, 0, sizeof(ie));
1103                 ie.group_cipher = WPA_CIPHER_CCMP;
1104                 ie.pairwise_cipher = WPA_CIPHER_CCMP;
1105                 ie.key_mgmt = WPA_KEY_MGMT_OSEN;
1106                 proto = WPA_PROTO_OSEN;
1107 #endif /* CONFIG_HS20 */
1108         } else if (bss) {
1109                 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select WPA/RSN");
1110                 wpa_dbg(wpa_s, MSG_DEBUG,
1111                         "WPA: ssid proto=0x%x pairwise_cipher=0x%x group_cipher=0x%x key_mgmt=0x%x",
1112                         ssid->proto, ssid->pairwise_cipher, ssid->group_cipher,
1113                         ssid->key_mgmt);
1114                 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: BSS " MACSTR " ssid='%s'%s%s%s",
1115                         MAC2STR(bss->bssid),
1116                         wpa_ssid_txt(bss->ssid, bss->ssid_len),
1117                         bss_wpa ? " WPA" : "",
1118                         bss_rsn ? " RSN" : "",
1119                         bss_osen ? " OSEN" : "");
1120                 if (bss_rsn) {
1121                         wpa_hexdump(MSG_DEBUG, "RSN", bss_rsn, 2 + bss_rsn[1]);
1122                         if (wpa_parse_wpa_ie(bss_rsn, 2 + bss_rsn[1], &ie)) {
1123                                 wpa_dbg(wpa_s, MSG_DEBUG,
1124                                         "Could not parse RSN element");
1125                         } else {
1126                                 wpa_dbg(wpa_s, MSG_DEBUG,
1127                                         "RSN: pairwise_cipher=0x%x group_cipher=0x%x key_mgmt=0x%x",
1128                                         ie.pairwise_cipher, ie.group_cipher,
1129                                         ie.key_mgmt);
1130                         }
1131                 }
1132                 if (bss_wpa) {
1133                         wpa_hexdump(MSG_DEBUG, "WPA", bss_wpa, 2 + bss_wpa[1]);
1134                         if (wpa_parse_wpa_ie(bss_wpa, 2 + bss_wpa[1], &ie)) {
1135                                 wpa_dbg(wpa_s, MSG_DEBUG,
1136                                         "Could not parse WPA element");
1137                         } else {
1138                                 wpa_dbg(wpa_s, MSG_DEBUG,
1139                                         "WPA: pairwise_cipher=0x%x group_cipher=0x%x key_mgmt=0x%x",
1140                                         ie.pairwise_cipher, ie.group_cipher,
1141                                         ie.key_mgmt);
1142                         }
1143                 }
1144                 return -1;
1145         } else {
1146                 if (ssid->proto & WPA_PROTO_OSEN)
1147                         proto = WPA_PROTO_OSEN;
1148                 else if (ssid->proto & WPA_PROTO_RSN)
1149                         proto = WPA_PROTO_RSN;
1150                 else
1151                         proto = WPA_PROTO_WPA;
1152                 if (wpa_supplicant_suites_from_ai(wpa_s, ssid, &ie) < 0) {
1153                         os_memset(&ie, 0, sizeof(ie));
1154                         ie.group_cipher = ssid->group_cipher;
1155                         ie.pairwise_cipher = ssid->pairwise_cipher;
1156                         ie.key_mgmt = ssid->key_mgmt;
1157 #ifdef CONFIG_IEEE80211W
1158                         ie.mgmt_group_cipher =
1159                                 ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION ?
1160                                 WPA_CIPHER_AES_128_CMAC : 0;
1161 #endif /* CONFIG_IEEE80211W */
1162                         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Set cipher suites "
1163                                 "based on configuration");
1164                 } else
1165                         proto = ie.proto;
1166         }
1167
1168         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Selected cipher suites: group %d "
1169                 "pairwise %d key_mgmt %d proto %d",
1170                 ie.group_cipher, ie.pairwise_cipher, ie.key_mgmt, proto);
1171 #ifdef CONFIG_IEEE80211W
1172         if (ssid->ieee80211w) {
1173                 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Selected mgmt group cipher %d",
1174                         ie.mgmt_group_cipher);
1175         }
1176 #endif /* CONFIG_IEEE80211W */
1177
1178         wpa_s->wpa_proto = proto;
1179         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PROTO, proto);
1180         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED,
1181                          !!(ssid->proto & (WPA_PROTO_RSN | WPA_PROTO_OSEN)));
1182
1183         if (bss || !wpa_s->ap_ies_from_associnfo) {
1184                 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
1185                                          bss_wpa ? 2 + bss_wpa[1] : 0) ||
1186                     wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
1187                                          bss_rsn ? 2 + bss_rsn[1] : 0))
1188                         return -1;
1189         }
1190
1191 #ifdef CONFIG_NO_WPA
1192         wpa_s->group_cipher = WPA_CIPHER_NONE;
1193         wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
1194 #else /* CONFIG_NO_WPA */
1195         sel = ie.group_cipher & ssid->group_cipher;
1196         wpa_s->group_cipher = wpa_pick_group_cipher(sel);
1197         if (wpa_s->group_cipher < 0) {
1198                 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select group "
1199                         "cipher");
1200                 return -1;
1201         }
1202         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK %s",
1203                 wpa_cipher_txt(wpa_s->group_cipher));
1204
1205         sel = ie.pairwise_cipher & ssid->pairwise_cipher;
1206         wpa_s->pairwise_cipher = wpa_pick_pairwise_cipher(sel, 1);
1207         if (wpa_s->pairwise_cipher < 0) {
1208                 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select pairwise "
1209                         "cipher");
1210                 return -1;
1211         }
1212         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using PTK %s",
1213                 wpa_cipher_txt(wpa_s->pairwise_cipher));
1214 #endif /* CONFIG_NO_WPA */
1215
1216         sel = ie.key_mgmt & ssid->key_mgmt;
1217 #ifdef CONFIG_SAE
1218         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SAE))
1219                 sel &= ~(WPA_KEY_MGMT_SAE | WPA_KEY_MGMT_FT_SAE);
1220 #endif /* CONFIG_SAE */
1221         if (0) {
1222 #ifdef CONFIG_SUITEB192
1223         } else if (sel & WPA_KEY_MGMT_IEEE8021X_SUITE_B_192) {
1224                 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_SUITE_B_192;
1225                 wpa_dbg(wpa_s, MSG_DEBUG,
1226                         "WPA: using KEY_MGMT 802.1X with Suite B (192-bit)");
1227 #endif /* CONFIG_SUITEB192 */
1228 #ifdef CONFIG_SUITEB
1229         } else if (sel & WPA_KEY_MGMT_IEEE8021X_SUITE_B) {
1230                 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_SUITE_B;
1231                 wpa_dbg(wpa_s, MSG_DEBUG,
1232                         "WPA: using KEY_MGMT 802.1X with Suite B");
1233 #endif /* CONFIG_SUITEB */
1234 #ifdef CONFIG_IEEE80211R
1235         } else if (sel & WPA_KEY_MGMT_FT_IEEE8021X) {
1236                 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_IEEE8021X;
1237                 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/802.1X");
1238         } else if (sel & WPA_KEY_MGMT_FT_PSK) {
1239                 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_PSK;
1240                 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/PSK");
1241 #endif /* CONFIG_IEEE80211R */
1242 #ifdef CONFIG_SAE
1243         } else if (sel & WPA_KEY_MGMT_SAE) {
1244                 wpa_s->key_mgmt = WPA_KEY_MGMT_SAE;
1245                 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: using KEY_MGMT SAE");
1246         } else if (sel & WPA_KEY_MGMT_FT_SAE) {
1247                 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_SAE;
1248                 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: using KEY_MGMT FT/SAE");
1249 #endif /* CONFIG_SAE */
1250 #ifdef CONFIG_IEEE80211W
1251         } else if (sel & WPA_KEY_MGMT_IEEE8021X_SHA256) {
1252                 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_SHA256;
1253                 wpa_dbg(wpa_s, MSG_DEBUG,
1254                         "WPA: using KEY_MGMT 802.1X with SHA256");
1255         } else if (sel & WPA_KEY_MGMT_PSK_SHA256) {
1256                 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK_SHA256;
1257                 wpa_dbg(wpa_s, MSG_DEBUG,
1258                         "WPA: using KEY_MGMT PSK with SHA256");
1259 #endif /* CONFIG_IEEE80211W */
1260         } else if (sel & WPA_KEY_MGMT_IEEE8021X) {
1261                 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
1262                 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT 802.1X");
1263         } else if (sel & WPA_KEY_MGMT_PSK) {
1264                 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK;
1265                 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-PSK");
1266         } else if (sel & WPA_KEY_MGMT_WPA_NONE) {
1267                 wpa_s->key_mgmt = WPA_KEY_MGMT_WPA_NONE;
1268                 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-NONE");
1269 #ifdef CONFIG_HS20
1270         } else if (sel & WPA_KEY_MGMT_OSEN) {
1271                 wpa_s->key_mgmt = WPA_KEY_MGMT_OSEN;
1272                 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: using KEY_MGMT OSEN");
1273 #endif /* CONFIG_HS20 */
1274         } else {
1275                 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select "
1276                         "authenticated key management type");
1277                 return -1;
1278         }
1279
1280         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt);
1281         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE,
1282                          wpa_s->pairwise_cipher);
1283         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher);
1284
1285 #ifdef CONFIG_IEEE80211W
1286         sel = ie.mgmt_group_cipher;
1287         if (wpas_get_ssid_pmf(wpa_s, ssid) == NO_MGMT_FRAME_PROTECTION ||
1288             !(ie.capabilities & WPA_CAPABILITY_MFPC))
1289                 sel = 0;
1290         if (sel & WPA_CIPHER_AES_128_CMAC) {
1291                 wpa_s->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC;
1292                 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using MGMT group cipher "
1293                         "AES-128-CMAC");
1294         } else if (sel & WPA_CIPHER_BIP_GMAC_128) {
1295                 wpa_s->mgmt_group_cipher = WPA_CIPHER_BIP_GMAC_128;
1296                 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using MGMT group cipher "
1297                         "BIP-GMAC-128");
1298         } else if (sel & WPA_CIPHER_BIP_GMAC_256) {
1299                 wpa_s->mgmt_group_cipher = WPA_CIPHER_BIP_GMAC_256;
1300                 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using MGMT group cipher "
1301                         "BIP-GMAC-256");
1302         } else if (sel & WPA_CIPHER_BIP_CMAC_256) {
1303                 wpa_s->mgmt_group_cipher = WPA_CIPHER_BIP_CMAC_256;
1304                 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using MGMT group cipher "
1305                         "BIP-CMAC-256");
1306         } else {
1307                 wpa_s->mgmt_group_cipher = 0;
1308                 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: not using MGMT group cipher");
1309         }
1310         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP,
1311                          wpa_s->mgmt_group_cipher);
1312         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MFP,
1313                          wpas_get_ssid_pmf(wpa_s, ssid));
1314 #endif /* CONFIG_IEEE80211W */
1315
1316         if (wpa_sm_set_assoc_wpa_ie_default(wpa_s->wpa, wpa_ie, wpa_ie_len)) {
1317                 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to generate WPA IE");
1318                 return -1;
1319         }
1320
1321         if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt)) {
1322                 int psk_set = 0;
1323
1324                 if (ssid->psk_set) {
1325                         wpa_sm_set_pmk(wpa_s->wpa, ssid->psk, PMK_LEN, NULL,
1326                                        NULL);
1327                         psk_set = 1;
1328                 }
1329 #ifndef CONFIG_NO_PBKDF2
1330                 if (bss && ssid->bssid_set && ssid->ssid_len == 0 &&
1331                     ssid->passphrase) {
1332                         u8 psk[PMK_LEN];
1333                         pbkdf2_sha1(ssid->passphrase, bss->ssid, bss->ssid_len,
1334                                     4096, psk, PMK_LEN);
1335                         wpa_hexdump_key(MSG_MSGDUMP, "PSK (from passphrase)",
1336                                         psk, PMK_LEN);
1337                         wpa_sm_set_pmk(wpa_s->wpa, psk, PMK_LEN, NULL, NULL);
1338                         psk_set = 1;
1339                         os_memset(psk, 0, sizeof(psk));
1340                 }
1341 #endif /* CONFIG_NO_PBKDF2 */
1342 #ifdef CONFIG_EXT_PASSWORD
1343                 if (ssid->ext_psk) {
1344                         struct wpabuf *pw = ext_password_get(wpa_s->ext_pw,
1345                                                              ssid->ext_psk);
1346                         char pw_str[64 + 1];
1347                         u8 psk[PMK_LEN];
1348
1349                         if (pw == NULL) {
1350                                 wpa_msg(wpa_s, MSG_INFO, "EXT PW: No PSK "
1351                                         "found from external storage");
1352                                 return -1;
1353                         }
1354
1355                         if (wpabuf_len(pw) < 8 || wpabuf_len(pw) > 64) {
1356                                 wpa_msg(wpa_s, MSG_INFO, "EXT PW: Unexpected "
1357                                         "PSK length %d in external storage",
1358                                         (int) wpabuf_len(pw));
1359                                 ext_password_free(pw);
1360                                 return -1;
1361                         }
1362
1363                         os_memcpy(pw_str, wpabuf_head(pw), wpabuf_len(pw));
1364                         pw_str[wpabuf_len(pw)] = '\0';
1365
1366 #ifndef CONFIG_NO_PBKDF2
1367                         if (wpabuf_len(pw) >= 8 && wpabuf_len(pw) < 64 && bss)
1368                         {
1369                                 pbkdf2_sha1(pw_str, bss->ssid, bss->ssid_len,
1370                                             4096, psk, PMK_LEN);
1371                                 os_memset(pw_str, 0, sizeof(pw_str));
1372                                 wpa_hexdump_key(MSG_MSGDUMP, "PSK (from "
1373                                                 "external passphrase)",
1374                                                 psk, PMK_LEN);
1375                                 wpa_sm_set_pmk(wpa_s->wpa, psk, PMK_LEN, NULL,
1376                                                NULL);
1377                                 psk_set = 1;
1378                                 os_memset(psk, 0, sizeof(psk));
1379                         } else
1380 #endif /* CONFIG_NO_PBKDF2 */
1381                         if (wpabuf_len(pw) == 2 * PMK_LEN) {
1382                                 if (hexstr2bin(pw_str, psk, PMK_LEN) < 0) {
1383                                         wpa_msg(wpa_s, MSG_INFO, "EXT PW: "
1384                                                 "Invalid PSK hex string");
1385                                         os_memset(pw_str, 0, sizeof(pw_str));
1386                                         ext_password_free(pw);
1387                                         return -1;
1388                                 }
1389                                 wpa_sm_set_pmk(wpa_s->wpa, psk, PMK_LEN, NULL,
1390                                                NULL);
1391                                 psk_set = 1;
1392                                 os_memset(psk, 0, sizeof(psk));
1393                         } else {
1394                                 wpa_msg(wpa_s, MSG_INFO, "EXT PW: No suitable "
1395                                         "PSK available");
1396                                 os_memset(pw_str, 0, sizeof(pw_str));
1397                                 ext_password_free(pw);
1398                                 return -1;
1399                         }
1400
1401                         os_memset(pw_str, 0, sizeof(pw_str));
1402                         ext_password_free(pw);
1403                 }
1404 #endif /* CONFIG_EXT_PASSWORD */
1405
1406                 if (!psk_set) {
1407                         wpa_msg(wpa_s, MSG_INFO,
1408                                 "No PSK available for association");
1409                         return -1;
1410                 }
1411         } else
1412                 wpa_sm_set_pmk_from_pmksa(wpa_s->wpa);
1413
1414         return 0;
1415 }
1416
1417
1418 static void wpas_ext_capab_byte(struct wpa_supplicant *wpa_s, u8 *pos, int idx)
1419 {
1420         *pos = 0x00;
1421
1422         switch (idx) {
1423         case 0: /* Bits 0-7 */
1424                 break;
1425         case 1: /* Bits 8-15 */
1426                 break;
1427         case 2: /* Bits 16-23 */
1428 #ifdef CONFIG_WNM
1429                 *pos |= 0x02; /* Bit 17 - WNM-Sleep Mode */
1430                 *pos |= 0x08; /* Bit 19 - BSS Transition */
1431 #endif /* CONFIG_WNM */
1432                 break;
1433         case 3: /* Bits 24-31 */
1434 #ifdef CONFIG_WNM
1435                 *pos |= 0x02; /* Bit 25 - SSID List */
1436 #endif /* CONFIG_WNM */
1437 #ifdef CONFIG_INTERWORKING
1438                 if (wpa_s->conf->interworking)
1439                         *pos |= 0x80; /* Bit 31 - Interworking */
1440 #endif /* CONFIG_INTERWORKING */
1441                 break;
1442         case 4: /* Bits 32-39 */
1443 #ifdef CONFIG_INTERWORKING
1444                 if (wpa_s->drv_flags / WPA_DRIVER_FLAGS_QOS_MAPPING)
1445                         *pos |= 0x01; /* Bit 32 - QoS Map */
1446 #endif /* CONFIG_INTERWORKING */
1447                 break;
1448         case 5: /* Bits 40-47 */
1449 #ifdef CONFIG_HS20
1450                 if (wpa_s->conf->hs20)
1451                         *pos |= 0x40; /* Bit 46 - WNM-Notification */
1452 #endif /* CONFIG_HS20 */
1453 #ifdef CONFIG_MBO
1454                 *pos |= 0x40; /* Bit 46 - WNM-Notification */
1455 #endif /* CONFIG_MBO */
1456                 break;
1457         case 6: /* Bits 48-55 */
1458                 break;
1459         }
1460 }
1461
1462
1463 int wpas_build_ext_capab(struct wpa_supplicant *wpa_s, u8 *buf, size_t buflen)
1464 {
1465         u8 *pos = buf;
1466         u8 len = 6, i;
1467
1468         if (len < wpa_s->extended_capa_len)
1469                 len = wpa_s->extended_capa_len;
1470         if (buflen < (size_t) len + 2) {
1471                 wpa_printf(MSG_INFO,
1472                            "Not enough room for building extended capabilities element");
1473                 return -1;
1474         }
1475
1476         *pos++ = WLAN_EID_EXT_CAPAB;
1477         *pos++ = len;
1478         for (i = 0; i < len; i++, pos++) {
1479                 wpas_ext_capab_byte(wpa_s, pos, i);
1480
1481                 if (i < wpa_s->extended_capa_len) {
1482                         *pos &= ~wpa_s->extended_capa_mask[i];
1483                         *pos |= wpa_s->extended_capa[i];
1484                 }
1485         }
1486
1487         while (len > 0 && buf[1 + len] == 0) {
1488                 len--;
1489                 buf[1] = len;
1490         }
1491         if (len == 0)
1492                 return 0;
1493
1494         return 2 + len;
1495 }
1496
1497
1498 static int wpas_valid_bss(struct wpa_supplicant *wpa_s,
1499                           struct wpa_bss *test_bss)
1500 {
1501         struct wpa_bss *bss;
1502
1503         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1504                 if (bss == test_bss)
1505                         return 1;
1506         }
1507
1508         return 0;
1509 }
1510
1511
1512 static int wpas_valid_ssid(struct wpa_supplicant *wpa_s,
1513                            struct wpa_ssid *test_ssid)
1514 {
1515         struct wpa_ssid *ssid;
1516
1517         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1518                 if (ssid == test_ssid)
1519                         return 1;
1520         }
1521
1522         return 0;
1523 }
1524
1525
1526 int wpas_valid_bss_ssid(struct wpa_supplicant *wpa_s, struct wpa_bss *test_bss,
1527                         struct wpa_ssid *test_ssid)
1528 {
1529         if (test_bss && !wpas_valid_bss(wpa_s, test_bss))
1530                 return 0;
1531
1532         return test_ssid == NULL || wpas_valid_ssid(wpa_s, test_ssid);
1533 }
1534
1535
1536 void wpas_connect_work_free(struct wpa_connect_work *cwork)
1537 {
1538         if (cwork == NULL)
1539                 return;
1540         os_free(cwork);
1541 }
1542
1543
1544 void wpas_connect_work_done(struct wpa_supplicant *wpa_s)
1545 {
1546         struct wpa_connect_work *cwork;
1547         struct wpa_radio_work *work = wpa_s->connect_work;
1548
1549         if (!work)
1550                 return;
1551
1552         wpa_s->connect_work = NULL;
1553         cwork = work->ctx;
1554         work->ctx = NULL;
1555         wpas_connect_work_free(cwork);
1556         radio_work_done(work);
1557 }
1558
1559
1560 int wpas_update_random_addr(struct wpa_supplicant *wpa_s, int style)
1561 {
1562         struct os_reltime now;
1563         u8 addr[ETH_ALEN];
1564
1565         os_get_reltime(&now);
1566         if (wpa_s->last_mac_addr_style == style &&
1567             wpa_s->last_mac_addr_change.sec != 0 &&
1568             !os_reltime_expired(&now, &wpa_s->last_mac_addr_change,
1569                                 wpa_s->conf->rand_addr_lifetime)) {
1570                 wpa_msg(wpa_s, MSG_DEBUG,
1571                         "Previously selected random MAC address has not yet expired");
1572                 return 0;
1573         }
1574
1575         switch (style) {
1576         case 1:
1577                 if (random_mac_addr(addr) < 0)
1578                         return -1;
1579                 break;
1580         case 2:
1581                 os_memcpy(addr, wpa_s->perm_addr, ETH_ALEN);
1582                 if (random_mac_addr_keep_oui(addr) < 0)
1583                         return -1;
1584                 break;
1585         default:
1586                 return -1;
1587         }
1588
1589         if (wpa_drv_set_mac_addr(wpa_s, addr) < 0) {
1590                 wpa_msg(wpa_s, MSG_INFO,
1591                         "Failed to set random MAC address");
1592                 return -1;
1593         }
1594
1595         os_get_reltime(&wpa_s->last_mac_addr_change);
1596         wpa_s->mac_addr_changed = 1;
1597         wpa_s->last_mac_addr_style = style;
1598
1599         if (wpa_supplicant_update_mac_addr(wpa_s) < 0) {
1600                 wpa_msg(wpa_s, MSG_INFO,
1601                         "Could not update MAC address information");
1602                 return -1;
1603         }
1604
1605         wpa_msg(wpa_s, MSG_DEBUG, "Using random MAC address " MACSTR,
1606                 MAC2STR(addr));
1607
1608         return 0;
1609 }
1610
1611
1612 int wpas_update_random_addr_disassoc(struct wpa_supplicant *wpa_s)
1613 {
1614         if (wpa_s->wpa_state >= WPA_AUTHENTICATING ||
1615             !wpa_s->conf->preassoc_mac_addr)
1616                 return 0;
1617
1618         return wpas_update_random_addr(wpa_s, wpa_s->conf->preassoc_mac_addr);
1619 }
1620
1621
1622 static void wpas_start_assoc_cb(struct wpa_radio_work *work, int deinit);
1623
1624 /**
1625  * wpa_supplicant_associate - Request association
1626  * @wpa_s: Pointer to wpa_supplicant data
1627  * @bss: Scan results for the selected BSS, or %NULL if not available
1628  * @ssid: Configuration data for the selected network
1629  *
1630  * This function is used to request %wpa_supplicant to associate with a BSS.
1631  */
1632 void wpa_supplicant_associate(struct wpa_supplicant *wpa_s,
1633                               struct wpa_bss *bss, struct wpa_ssid *ssid)
1634 {
1635         struct wpa_connect_work *cwork;
1636         int rand_style;
1637
1638         wpa_s->own_disconnect_req = 0;
1639
1640         /*
1641          * If we are starting a new connection, any previously pending EAPOL
1642          * RX cannot be valid anymore.
1643          */
1644         wpabuf_free(wpa_s->pending_eapol_rx);
1645         wpa_s->pending_eapol_rx = NULL;
1646
1647         if (ssid->mac_addr == -1)
1648                 rand_style = wpa_s->conf->mac_addr;
1649         else
1650                 rand_style = ssid->mac_addr;
1651
1652         wmm_ac_clear_saved_tspecs(wpa_s);
1653         wpa_s->reassoc_same_bss = 0;
1654         wpa_s->reassoc_same_ess = 0;
1655
1656         if (wpa_s->last_ssid == ssid) {
1657                 wpa_dbg(wpa_s, MSG_DEBUG, "Re-association to the same ESS");
1658                 wpa_s->reassoc_same_ess = 1;
1659                 if (wpa_s->current_bss && wpa_s->current_bss == bss) {
1660                         wmm_ac_save_tspecs(wpa_s);
1661                         wpa_s->reassoc_same_bss = 1;
1662                 }
1663         } else if (rand_style > 0) {
1664                 if (wpas_update_random_addr(wpa_s, rand_style) < 0)
1665                         return;
1666                 wpa_sm_pmksa_cache_flush(wpa_s->wpa, ssid);
1667         } else if (wpa_s->mac_addr_changed) {
1668                 if (wpa_drv_set_mac_addr(wpa_s, NULL) < 0) {
1669                         wpa_msg(wpa_s, MSG_INFO,
1670                                 "Could not restore permanent MAC address");
1671                         return;
1672                 }
1673                 wpa_s->mac_addr_changed = 0;
1674                 if (wpa_supplicant_update_mac_addr(wpa_s) < 0) {
1675                         wpa_msg(wpa_s, MSG_INFO,
1676                                 "Could not update MAC address information");
1677                         return;
1678                 }
1679                 wpa_msg(wpa_s, MSG_DEBUG, "Using permanent MAC address");
1680         }
1681         wpa_s->last_ssid = ssid;
1682
1683 #ifdef CONFIG_IBSS_RSN
1684         ibss_rsn_deinit(wpa_s->ibss_rsn);
1685         wpa_s->ibss_rsn = NULL;
1686 #endif /* CONFIG_IBSS_RSN */
1687
1688         if (ssid->mode == WPAS_MODE_AP || ssid->mode == WPAS_MODE_P2P_GO ||
1689             ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1690 #ifdef CONFIG_AP
1691                 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP)) {
1692                         wpa_msg(wpa_s, MSG_INFO, "Driver does not support AP "
1693                                 "mode");
1694                         return;
1695                 }
1696                 if (wpa_supplicant_create_ap(wpa_s, ssid) < 0) {
1697                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1698                         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION)
1699                                 wpas_p2p_ap_setup_failed(wpa_s);
1700                         return;
1701                 }
1702                 wpa_s->current_bss = bss;
1703 #else /* CONFIG_AP */
1704                 wpa_msg(wpa_s, MSG_ERROR, "AP mode support not included in "
1705                         "the build");
1706 #endif /* CONFIG_AP */
1707                 return;
1708         }
1709
1710         if (ssid->mode == WPAS_MODE_MESH) {
1711 #ifdef CONFIG_MESH
1712                 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_MESH)) {
1713                         wpa_msg(wpa_s, MSG_INFO,
1714                                 "Driver does not support mesh mode");
1715                         return;
1716                 }
1717                 if (bss)
1718                         ssid->frequency = bss->freq;
1719                 if (wpa_supplicant_join_mesh(wpa_s, ssid) < 0) {
1720                         wpa_msg(wpa_s, MSG_ERROR, "Could not join mesh");
1721                         return;
1722                 }
1723                 wpa_s->current_bss = bss;
1724                 wpa_msg(wpa_s, MSG_INFO, MESH_GROUP_STARTED "ssid=\"%s\" id=%d",
1725                         wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
1726                         ssid->id);
1727 #else /* CONFIG_MESH */
1728                 wpa_msg(wpa_s, MSG_ERROR,
1729                         "mesh mode support not included in the build");
1730 #endif /* CONFIG_MESH */
1731                 return;
1732         }
1733
1734 #ifdef CONFIG_TDLS
1735         if (bss)
1736                 wpa_tdls_ap_ies(wpa_s->wpa, (const u8 *) (bss + 1),
1737                                 bss->ie_len);
1738 #endif /* CONFIG_TDLS */
1739
1740         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
1741             ssid->mode == IEEE80211_MODE_INFRA) {
1742                 sme_authenticate(wpa_s, bss, ssid);
1743                 return;
1744         }
1745
1746         if (wpa_s->connect_work) {
1747                 wpa_dbg(wpa_s, MSG_DEBUG, "Reject wpa_supplicant_associate() call since connect_work exist");
1748                 return;
1749         }
1750
1751         if (radio_work_pending(wpa_s, "connect")) {
1752                 wpa_dbg(wpa_s, MSG_DEBUG, "Reject wpa_supplicant_associate() call since pending work exist");
1753                 return;
1754         }
1755
1756         wpas_abort_ongoing_scan(wpa_s);
1757
1758         cwork = os_zalloc(sizeof(*cwork));
1759         if (cwork == NULL)
1760                 return;
1761
1762         cwork->bss = bss;
1763         cwork->ssid = ssid;
1764
1765         if (radio_add_work(wpa_s, bss ? bss->freq : 0, "connect", 1,
1766                            wpas_start_assoc_cb, cwork) < 0) {
1767                 os_free(cwork);
1768         }
1769 }
1770
1771
1772 static int bss_is_ibss(struct wpa_bss *bss)
1773 {
1774         return (bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) ==
1775                 IEEE80211_CAP_IBSS;
1776 }
1777
1778
1779 static int drv_supports_vht(struct wpa_supplicant *wpa_s,
1780                             const struct wpa_ssid *ssid)
1781 {
1782         enum hostapd_hw_mode hw_mode;
1783         struct hostapd_hw_modes *mode = NULL;
1784         u8 channel;
1785         int i;
1786
1787 #ifdef CONFIG_HT_OVERRIDES
1788         if (ssid->disable_ht)
1789                 return 0;
1790 #endif /* CONFIG_HT_OVERRIDES */
1791
1792         hw_mode = ieee80211_freq_to_chan(ssid->frequency, &channel);
1793         if (hw_mode == NUM_HOSTAPD_MODES)
1794                 return 0;
1795         for (i = 0; wpa_s->hw.modes && i < wpa_s->hw.num_modes; i++) {
1796                 if (wpa_s->hw.modes[i].mode == hw_mode) {
1797                         mode = &wpa_s->hw.modes[i];
1798                         break;
1799                 }
1800         }
1801
1802         if (!mode)
1803                 return 0;
1804
1805         return mode->vht_capab != 0;
1806 }
1807
1808
1809 void ibss_mesh_setup_freq(struct wpa_supplicant *wpa_s,
1810                           const struct wpa_ssid *ssid,
1811                           struct hostapd_freq_params *freq)
1812 {
1813         enum hostapd_hw_mode hw_mode;
1814         struct hostapd_hw_modes *mode = NULL;
1815         int ht40plus[] = { 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157,
1816                            184, 192 };
1817         int vht80[] = { 36, 52, 100, 116, 132, 149 };
1818         struct hostapd_channel_data *pri_chan = NULL, *sec_chan = NULL;
1819         u8 channel;
1820         int i, chan_idx, ht40 = -1, res, obss_scan = 1;
1821         unsigned int j, k;
1822         struct hostapd_freq_params vht_freq;
1823         int chwidth, seg0, seg1;
1824         u32 vht_caps = 0;
1825
1826         freq->freq = ssid->frequency;
1827
1828         for (j = 0; j < wpa_s->last_scan_res_used; j++) {
1829                 struct wpa_bss *bss = wpa_s->last_scan_res[j];
1830
1831                 if (ssid->mode != WPAS_MODE_IBSS)
1832                         break;
1833
1834                 /* Don't adjust control freq in case of fixed_freq */
1835                 if (ssid->fixed_freq)
1836                         break;
1837
1838                 if (!bss_is_ibss(bss))
1839                         continue;
1840
1841                 if (ssid->ssid_len == bss->ssid_len &&
1842                     os_memcmp(ssid->ssid, bss->ssid, bss->ssid_len) == 0) {
1843                         wpa_printf(MSG_DEBUG,
1844                                    "IBSS already found in scan results, adjust control freq: %d",
1845                                    bss->freq);
1846                         freq->freq = bss->freq;
1847                         obss_scan = 0;
1848                         break;
1849                 }
1850         }
1851
1852         /* For IBSS check HT_IBSS flag */
1853         if (ssid->mode == WPAS_MODE_IBSS &&
1854             !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_HT_IBSS))
1855                 return;
1856
1857         if (wpa_s->group_cipher == WPA_CIPHER_WEP40 ||
1858             wpa_s->group_cipher == WPA_CIPHER_WEP104 ||
1859             wpa_s->pairwise_cipher == WPA_CIPHER_TKIP) {
1860                 wpa_printf(MSG_DEBUG,
1861                            "IBSS: WEP/TKIP detected, do not try to enable HT");
1862                 return;
1863         }
1864
1865         hw_mode = ieee80211_freq_to_chan(freq->freq, &channel);
1866         for (i = 0; wpa_s->hw.modes && i < wpa_s->hw.num_modes; i++) {
1867                 if (wpa_s->hw.modes[i].mode == hw_mode) {
1868                         mode = &wpa_s->hw.modes[i];
1869                         break;
1870                 }
1871         }
1872
1873         if (!mode)
1874                 return;
1875
1876         freq->ht_enabled = ht_supported(mode);
1877         if (!freq->ht_enabled)
1878                 return;
1879
1880         /* Setup higher BW only for 5 GHz */
1881         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
1882                 return;
1883
1884         for (chan_idx = 0; chan_idx < mode->num_channels; chan_idx++) {
1885                 pri_chan = &mode->channels[chan_idx];
1886                 if (pri_chan->chan == channel)
1887                         break;
1888                 pri_chan = NULL;
1889         }
1890         if (!pri_chan)
1891                 return;
1892
1893         /* Check primary channel flags */
1894         if (pri_chan->flag & (HOSTAPD_CHAN_DISABLED | HOSTAPD_CHAN_NO_IR))
1895                 return;
1896
1897         /* Check/setup HT40+/HT40- */
1898         for (j = 0; j < ARRAY_SIZE(ht40plus); j++) {
1899                 if (ht40plus[j] == channel) {
1900                         ht40 = 1;
1901                         break;
1902                 }
1903         }
1904
1905         /* Find secondary channel */
1906         for (i = 0; i < mode->num_channels; i++) {
1907                 sec_chan = &mode->channels[i];
1908                 if (sec_chan->chan == channel + ht40 * 4)
1909                         break;
1910                 sec_chan = NULL;
1911         }
1912         if (!sec_chan)
1913                 return;
1914
1915         /* Check secondary channel flags */
1916         if (sec_chan->flag & (HOSTAPD_CHAN_DISABLED | HOSTAPD_CHAN_NO_IR))
1917                 return;
1918
1919         freq->channel = pri_chan->chan;
1920
1921         switch (ht40) {
1922         case -1:
1923                 if (!(pri_chan->flag & HOSTAPD_CHAN_HT40MINUS))
1924                         return;
1925                 freq->sec_channel_offset = -1;
1926                 break;
1927         case 1:
1928                 if (!(pri_chan->flag & HOSTAPD_CHAN_HT40PLUS))
1929                         return;
1930                 freq->sec_channel_offset = 1;
1931                 break;
1932         default:
1933                 break;
1934         }
1935
1936         if (freq->sec_channel_offset && obss_scan) {
1937                 struct wpa_scan_results *scan_res;
1938
1939                 scan_res = wpa_supplicant_get_scan_results(wpa_s, NULL, 0);
1940                 if (scan_res == NULL) {
1941                         /* Back to HT20 */
1942                         freq->sec_channel_offset = 0;
1943                         return;
1944                 }
1945
1946                 res = check_40mhz_5g(mode, scan_res, pri_chan->chan,
1947                                      sec_chan->chan);
1948                 switch (res) {
1949                 case 0:
1950                         /* Back to HT20 */
1951                         freq->sec_channel_offset = 0;
1952                         break;
1953                 case 1:
1954                         /* Configuration allowed */
1955                         break;
1956                 case 2:
1957                         /* Switch pri/sec channels */
1958                         freq->freq = hw_get_freq(mode, sec_chan->chan);
1959                         freq->sec_channel_offset = -freq->sec_channel_offset;
1960                         freq->channel = sec_chan->chan;
1961                         break;
1962                 default:
1963                         freq->sec_channel_offset = 0;
1964                         break;
1965                 }
1966
1967                 wpa_scan_results_free(scan_res);
1968         }
1969
1970         wpa_printf(MSG_DEBUG,
1971                    "IBSS/mesh: setup freq channel %d, sec_channel_offset %d",
1972                    freq->channel, freq->sec_channel_offset);
1973
1974         if (!drv_supports_vht(wpa_s, ssid))
1975                 return;
1976
1977         /* For IBSS check VHT_IBSS flag */
1978         if (ssid->mode == WPAS_MODE_IBSS &&
1979             !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_VHT_IBSS))
1980                 return;
1981
1982         vht_freq = *freq;
1983
1984         vht_freq.vht_enabled = vht_supported(mode);
1985         if (!vht_freq.vht_enabled)
1986                 return;
1987
1988         /* setup center_freq1, bandwidth */
1989         for (j = 0; j < ARRAY_SIZE(vht80); j++) {
1990                 if (freq->channel >= vht80[j] &&
1991                     freq->channel < vht80[j] + 16)
1992                         break;
1993         }
1994
1995         if (j == ARRAY_SIZE(vht80))
1996                 return;
1997
1998         for (i = vht80[j]; i < vht80[j] + 16; i += 4) {
1999                 struct hostapd_channel_data *chan;
2000
2001                 chan = hw_get_channel_chan(mode, i, NULL);
2002                 if (!chan)
2003                         return;
2004
2005                 /* Back to HT configuration if channel not usable */
2006                 if (chan->flag & (HOSTAPD_CHAN_DISABLED | HOSTAPD_CHAN_NO_IR))
2007                         return;
2008         }
2009
2010         chwidth = VHT_CHANWIDTH_80MHZ;
2011         seg0 = vht80[j] + 6;
2012         seg1 = 0;
2013
2014         if (ssid->max_oper_chwidth == VHT_CHANWIDTH_80P80MHZ) {
2015                 /* setup center_freq2, bandwidth */
2016                 for (k = 0; k < ARRAY_SIZE(vht80); k++) {
2017                         /* Only accept 80 MHz segments separated by a gap */
2018                         if (j == k || abs(vht80[j] - vht80[k]) == 16)
2019                                 continue;
2020                         for (i = vht80[k]; i < vht80[k] + 16; i += 4) {
2021                                 struct hostapd_channel_data *chan;
2022
2023                                 chan = hw_get_channel_chan(mode, i, NULL);
2024                                 if (!chan)
2025                                         continue;
2026
2027                                 if (chan->flag & (HOSTAPD_CHAN_DISABLED |
2028                                                   HOSTAPD_CHAN_NO_IR |
2029                                                   HOSTAPD_CHAN_RADAR))
2030                                         continue;
2031
2032                                 /* Found a suitable second segment for 80+80 */
2033                                 chwidth = VHT_CHANWIDTH_80P80MHZ;
2034                                 vht_caps |=
2035                                         VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ;
2036                                 seg1 = vht80[k] + 6;
2037                         }
2038
2039                         if (chwidth == VHT_CHANWIDTH_80P80MHZ)
2040                                 break;
2041                 }
2042         } else if (ssid->max_oper_chwidth == VHT_CHANWIDTH_160MHZ) {
2043                 if (freq->freq == 5180) {
2044                         chwidth = VHT_CHANWIDTH_160MHZ;
2045                         vht_caps |= VHT_CAP_SUPP_CHAN_WIDTH_160MHZ;
2046                         seg0 = 50;
2047                 } else if (freq->freq == 5520) {
2048                         chwidth = VHT_CHANWIDTH_160MHZ;
2049                         vht_caps |= VHT_CAP_SUPP_CHAN_WIDTH_160MHZ;
2050                         seg0 = 114;
2051                 }
2052         }
2053
2054         if (hostapd_set_freq_params(&vht_freq, mode->mode, freq->freq,
2055                                     freq->channel, freq->ht_enabled,
2056                                     vht_freq.vht_enabled,
2057                                     freq->sec_channel_offset,
2058                                     chwidth, seg0, seg1, vht_caps) != 0)
2059                 return;
2060
2061         *freq = vht_freq;
2062
2063         wpa_printf(MSG_DEBUG, "IBSS: VHT setup freq cf1 %d, cf2 %d, bw %d",
2064                    freq->center_freq1, freq->center_freq2, freq->bandwidth);
2065 }
2066
2067
2068 static void wpas_start_assoc_cb(struct wpa_radio_work *work, int deinit)
2069 {
2070         struct wpa_connect_work *cwork = work->ctx;
2071         struct wpa_bss *bss = cwork->bss;
2072         struct wpa_ssid *ssid = cwork->ssid;
2073         struct wpa_supplicant *wpa_s = work->wpa_s;
2074         u8 wpa_ie[200];
2075         size_t wpa_ie_len;
2076         int use_crypt, ret, i, bssid_changed;
2077         int algs = WPA_AUTH_ALG_OPEN;
2078         unsigned int cipher_pairwise, cipher_group;
2079         struct wpa_driver_associate_params params;
2080         int wep_keys_set = 0;
2081         int assoc_failed = 0;
2082         struct wpa_ssid *old_ssid;
2083         u8 prev_bssid[ETH_ALEN];
2084 #ifdef CONFIG_HT_OVERRIDES
2085         struct ieee80211_ht_capabilities htcaps;
2086         struct ieee80211_ht_capabilities htcaps_mask;
2087 #endif /* CONFIG_HT_OVERRIDES */
2088 #ifdef CONFIG_VHT_OVERRIDES
2089        struct ieee80211_vht_capabilities vhtcaps;
2090        struct ieee80211_vht_capabilities vhtcaps_mask;
2091 #endif /* CONFIG_VHT_OVERRIDES */
2092 #ifdef CONFIG_MBO
2093         const u8 *mbo = NULL;
2094 #endif /* CONFIG_MBO */
2095
2096         if (deinit) {
2097                 if (work->started) {
2098                         wpa_s->connect_work = NULL;
2099
2100                         /* cancel possible auth. timeout */
2101                         eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s,
2102                                              NULL);
2103                 }
2104                 wpas_connect_work_free(cwork);
2105                 return;
2106         }
2107
2108         wpa_s->connect_work = work;
2109
2110         if (cwork->bss_removed || !wpas_valid_bss_ssid(wpa_s, bss, ssid) ||
2111             wpas_network_disabled(wpa_s, ssid)) {
2112                 wpa_dbg(wpa_s, MSG_DEBUG, "BSS/SSID entry for association not valid anymore - drop connection attempt");
2113                 wpas_connect_work_done(wpa_s);
2114                 return;
2115         }
2116
2117         os_memcpy(prev_bssid, wpa_s->bssid, ETH_ALEN);
2118         os_memset(&params, 0, sizeof(params));
2119         wpa_s->reassociate = 0;
2120         wpa_s->eap_expected_failure = 0;
2121         if (bss &&
2122             (!wpas_driver_bss_selection(wpa_s) || wpas_wps_searching(wpa_s))) {
2123 #ifdef CONFIG_IEEE80211R
2124                 const u8 *ie, *md = NULL;
2125 #endif /* CONFIG_IEEE80211R */
2126                 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
2127                         " (SSID='%s' freq=%d MHz)", MAC2STR(bss->bssid),
2128                         wpa_ssid_txt(bss->ssid, bss->ssid_len), bss->freq);
2129                 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
2130                 os_memset(wpa_s->bssid, 0, ETH_ALEN);
2131                 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
2132                 if (bssid_changed)
2133                         wpas_notify_bssid_changed(wpa_s);
2134 #ifdef CONFIG_IEEE80211R
2135                 ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
2136                 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
2137                         md = ie + 2;
2138                 wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
2139                 if (md) {
2140                         /* Prepare for the next transition */
2141                         wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
2142                 }
2143 #endif /* CONFIG_IEEE80211R */
2144 #ifdef CONFIG_WPS
2145         } else if ((ssid->ssid == NULL || ssid->ssid_len == 0) &&
2146                    wpa_s->conf->ap_scan == 2 &&
2147                    (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
2148                 /* Use ap_scan==1 style network selection to find the network
2149                  */
2150                 wpas_connect_work_done(wpa_s);
2151                 wpa_s->scan_req = MANUAL_SCAN_REQ;
2152                 wpa_s->reassociate = 1;
2153                 wpa_supplicant_req_scan(wpa_s, 0, 0);
2154                 return;
2155 #endif /* CONFIG_WPS */
2156         } else {
2157                 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with SSID '%s'",
2158                         wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
2159                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
2160         }
2161         if (!wpa_s->pno)
2162                 wpa_supplicant_cancel_sched_scan(wpa_s);
2163
2164         wpa_supplicant_cancel_scan(wpa_s);
2165
2166         /* Starting new association, so clear the possibly used WPA IE from the
2167          * previous association. */
2168         wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
2169
2170 #ifdef IEEE8021X_EAPOL
2171         if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
2172                 if (ssid->leap) {
2173                         if (ssid->non_leap == 0)
2174                                 algs = WPA_AUTH_ALG_LEAP;
2175                         else
2176                                 algs |= WPA_AUTH_ALG_LEAP;
2177                 }
2178         }
2179 #endif /* IEEE8021X_EAPOL */
2180         wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x", algs);
2181         if (ssid->auth_alg) {
2182                 algs = ssid->auth_alg;
2183                 wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: "
2184                         "0x%x", algs);
2185         }
2186
2187         if (bss && (wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
2188                     wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
2189             wpa_key_mgmt_wpa(ssid->key_mgmt)) {
2190                 int try_opportunistic;
2191                 try_opportunistic = (ssid->proactive_key_caching < 0 ?
2192                                      wpa_s->conf->okc :
2193                                      ssid->proactive_key_caching) &&
2194                         (ssid->proto & WPA_PROTO_RSN);
2195                 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
2196                                             ssid, try_opportunistic) == 0)
2197                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol);
2198                 wpa_ie_len = sizeof(wpa_ie);
2199                 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
2200                                               wpa_ie, &wpa_ie_len)) {
2201                         wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to set WPA "
2202                                 "key management and encryption suites");
2203                         wpas_connect_work_done(wpa_s);
2204                         return;
2205                 }
2206         } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && bss &&
2207                    wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) {
2208                 /*
2209                  * Both WPA and non-WPA IEEE 802.1X enabled in configuration -
2210                  * use non-WPA since the scan results did not indicate that the
2211                  * AP is using WPA or WPA2.
2212                  */
2213                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
2214                 wpa_ie_len = 0;
2215                 wpa_s->wpa_proto = 0;
2216         } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
2217                 wpa_ie_len = sizeof(wpa_ie);
2218                 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
2219                                               wpa_ie, &wpa_ie_len)) {
2220                         wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to set WPA "
2221                                 "key management and encryption suites (no "
2222                                 "scan results)");
2223                         wpas_connect_work_done(wpa_s);
2224                         return;
2225                 }
2226 #ifdef CONFIG_WPS
2227         } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
2228                 struct wpabuf *wps_ie;
2229                 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
2230                 if (wps_ie && wpabuf_len(wps_ie) <= sizeof(wpa_ie)) {
2231                         wpa_ie_len = wpabuf_len(wps_ie);
2232                         os_memcpy(wpa_ie, wpabuf_head(wps_ie), wpa_ie_len);
2233                 } else
2234                         wpa_ie_len = 0;
2235                 wpabuf_free(wps_ie);
2236                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
2237                 if (!bss || (bss->caps & IEEE80211_CAP_PRIVACY))
2238                         params.wps = WPS_MODE_PRIVACY;
2239                 else
2240                         params.wps = WPS_MODE_OPEN;
2241                 wpa_s->wpa_proto = 0;
2242 #endif /* CONFIG_WPS */
2243         } else {
2244                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
2245                 wpa_ie_len = 0;
2246                 wpa_s->wpa_proto = 0;
2247         }
2248
2249 #ifdef CONFIG_P2P
2250         if (wpa_s->global->p2p) {
2251                 u8 *pos;
2252                 size_t len;
2253                 int res;
2254                 pos = wpa_ie + wpa_ie_len;
2255                 len = sizeof(wpa_ie) - wpa_ie_len;
2256                 res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len,
2257                                             ssid->p2p_group);
2258                 if (res >= 0)
2259                         wpa_ie_len += res;
2260         }
2261
2262         wpa_s->cross_connect_disallowed = 0;
2263         if (bss) {
2264                 struct wpabuf *p2p;
2265                 p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
2266                 if (p2p) {
2267                         wpa_s->cross_connect_disallowed =
2268                                 p2p_get_cross_connect_disallowed(p2p);
2269                         wpabuf_free(p2p);
2270                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: WLAN AP %s cross "
2271                                 "connection",
2272                                 wpa_s->cross_connect_disallowed ?
2273                                 "disallows" : "allows");
2274                 }
2275         }
2276
2277         os_memset(wpa_s->p2p_ip_addr_info, 0, sizeof(wpa_s->p2p_ip_addr_info));
2278 #endif /* CONFIG_P2P */
2279
2280 #ifdef CONFIG_MBO
2281         if (bss) {
2282                 mbo = wpa_bss_get_vendor_ie(bss, MBO_IE_VENDOR_TYPE);
2283                 if (mbo) {
2284                         int len;
2285
2286                         len = wpas_mbo_supp_op_class_ie(wpa_s, bss->freq,
2287                                                         wpa_ie + wpa_ie_len,
2288                                                         sizeof(wpa_ie) -
2289                                                         wpa_ie_len);
2290                         if (len > 0)
2291                                 wpa_ie_len += len;
2292                 }
2293         }
2294 #endif /* CONFIG_MBO */
2295
2296         /*
2297          * Workaround: Add Extended Capabilities element only if the AP
2298          * included this element in Beacon/Probe Response frames. Some older
2299          * APs seem to have interoperability issues if this element is
2300          * included, so while the standard may require us to include the
2301          * element in all cases, it is justifiable to skip it to avoid
2302          * interoperability issues.
2303          */
2304         if (ssid->p2p_group)
2305                 wpa_drv_get_ext_capa(wpa_s, WPA_IF_P2P_CLIENT);
2306         else
2307                 wpa_drv_get_ext_capa(wpa_s, WPA_IF_STATION);
2308
2309         if (!bss || wpa_bss_get_ie(bss, WLAN_EID_EXT_CAPAB)) {
2310                 u8 ext_capab[18];
2311                 int ext_capab_len;
2312                 ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab,
2313                                                      sizeof(ext_capab));
2314                 if (ext_capab_len > 0) {
2315                         u8 *pos = wpa_ie;
2316                         if (wpa_ie_len > 0 && pos[0] == WLAN_EID_RSN)
2317                                 pos += 2 + pos[1];
2318                         os_memmove(pos + ext_capab_len, pos,
2319                                    wpa_ie_len - (pos - wpa_ie));
2320                         wpa_ie_len += ext_capab_len;
2321                         os_memcpy(pos, ext_capab, ext_capab_len);
2322                 }
2323         }
2324
2325 #ifdef CONFIG_HS20
2326         if (is_hs20_network(wpa_s, ssid, bss)) {
2327                 struct wpabuf *hs20;
2328
2329                 hs20 = wpabuf_alloc(20);
2330                 if (hs20) {
2331                         int pps_mo_id = hs20_get_pps_mo_id(wpa_s, ssid);
2332                         size_t len;
2333
2334                         wpas_hs20_add_indication(hs20, pps_mo_id);
2335                         len = sizeof(wpa_ie) - wpa_ie_len;
2336                         if (wpabuf_len(hs20) <= len) {
2337                                 os_memcpy(wpa_ie + wpa_ie_len,
2338                                           wpabuf_head(hs20), wpabuf_len(hs20));
2339                                 wpa_ie_len += wpabuf_len(hs20);
2340                         }
2341                         wpabuf_free(hs20);
2342
2343                         hs20_configure_frame_filters(wpa_s);
2344                 }
2345         }
2346 #endif /* CONFIG_HS20 */
2347
2348         if (wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ]) {
2349                 struct wpabuf *buf = wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ];
2350                 size_t len;
2351
2352                 len = sizeof(wpa_ie) - wpa_ie_len;
2353                 if (wpabuf_len(buf) <= len) {
2354                         os_memcpy(wpa_ie + wpa_ie_len,
2355                                   wpabuf_head(buf), wpabuf_len(buf));
2356                         wpa_ie_len += wpabuf_len(buf);
2357                 }
2358         }
2359
2360 #ifdef CONFIG_FST
2361         if (wpa_s->fst_ies) {
2362                 int fst_ies_len = wpabuf_len(wpa_s->fst_ies);
2363
2364                 if (wpa_ie_len + fst_ies_len <= sizeof(wpa_ie)) {
2365                         os_memcpy(wpa_ie + wpa_ie_len,
2366                                   wpabuf_head(wpa_s->fst_ies), fst_ies_len);
2367                         wpa_ie_len += fst_ies_len;
2368                 }
2369         }
2370 #endif /* CONFIG_FST */
2371
2372 #ifdef CONFIG_MBO
2373         if (mbo) {
2374                 int len;
2375
2376                 len = wpas_mbo_ie(wpa_s, wpa_ie + wpa_ie_len,
2377                                   sizeof(wpa_ie) - wpa_ie_len);
2378                 if (len >= 0)
2379                         wpa_ie_len += len;
2380         }
2381 #endif /* CONFIG_MBO */
2382
2383         wpa_clear_keys(wpa_s, bss ? bss->bssid : NULL);
2384         use_crypt = 1;
2385         cipher_pairwise = wpa_s->pairwise_cipher;
2386         cipher_group = wpa_s->group_cipher;
2387         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2388             wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
2389                 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE)
2390                         use_crypt = 0;
2391                 if (wpa_set_wep_keys(wpa_s, ssid)) {
2392                         use_crypt = 1;
2393                         wep_keys_set = 1;
2394                 }
2395         }
2396         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS)
2397                 use_crypt = 0;
2398
2399 #ifdef IEEE8021X_EAPOL
2400         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
2401                 if ((ssid->eapol_flags &
2402                      (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
2403                       EAPOL_FLAG_REQUIRE_KEY_BROADCAST)) == 0 &&
2404                     !wep_keys_set) {
2405                         use_crypt = 0;
2406                 } else {
2407                         /* Assume that dynamic WEP-104 keys will be used and
2408                          * set cipher suites in order for drivers to expect
2409                          * encryption. */
2410                         cipher_pairwise = cipher_group = WPA_CIPHER_WEP104;
2411                 }
2412         }
2413 #endif /* IEEE8021X_EAPOL */
2414
2415         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2416                 /* Set the key before (and later after) association */
2417                 wpa_supplicant_set_wpa_none_key(wpa_s, ssid);
2418         }
2419
2420         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
2421         if (bss) {
2422                 params.ssid = bss->ssid;
2423                 params.ssid_len = bss->ssid_len;
2424                 if (!wpas_driver_bss_selection(wpa_s) || ssid->bssid_set) {
2425                         wpa_printf(MSG_DEBUG, "Limit connection to BSSID "
2426                                    MACSTR " freq=%u MHz based on scan results "
2427                                    "(bssid_set=%d)",
2428                                    MAC2STR(bss->bssid), bss->freq,
2429                                    ssid->bssid_set);
2430                         params.bssid = bss->bssid;
2431                         params.freq.freq = bss->freq;
2432                 }
2433                 params.bssid_hint = bss->bssid;
2434                 params.freq_hint = bss->freq;
2435                 params.pbss = bss_is_pbss(bss);
2436         } else {
2437                 params.ssid = ssid->ssid;
2438                 params.ssid_len = ssid->ssid_len;
2439                 params.pbss = (ssid->pbss != 2) ? ssid->pbss : 0;
2440         }
2441
2442         if (ssid->mode == WPAS_MODE_IBSS && ssid->bssid_set &&
2443             wpa_s->conf->ap_scan == 2) {
2444                 params.bssid = ssid->bssid;
2445                 params.fixed_bssid = 1;
2446         }
2447
2448         /* Initial frequency for IBSS/mesh */
2449         if ((ssid->mode == WPAS_MODE_IBSS || ssid->mode == WPAS_MODE_MESH) &&
2450             ssid->frequency > 0 && params.freq.freq == 0)
2451                 ibss_mesh_setup_freq(wpa_s, ssid, &params.freq);
2452
2453         if (ssid->mode == WPAS_MODE_IBSS) {
2454                 params.fixed_freq = ssid->fixed_freq;
2455                 if (ssid->beacon_int)
2456                         params.beacon_int = ssid->beacon_int;
2457                 else
2458                         params.beacon_int = wpa_s->conf->beacon_int;
2459         }
2460
2461         params.wpa_ie = wpa_ie;
2462         params.wpa_ie_len = wpa_ie_len;
2463         params.pairwise_suite = cipher_pairwise;
2464         params.group_suite = cipher_group;
2465         params.key_mgmt_suite = wpa_s->key_mgmt;
2466         params.wpa_proto = wpa_s->wpa_proto;
2467         params.auth_alg = algs;
2468         params.mode = ssid->mode;
2469         params.bg_scan_period = ssid->bg_scan_period;
2470         for (i = 0; i < NUM_WEP_KEYS; i++) {
2471                 if (ssid->wep_key_len[i])
2472                         params.wep_key[i] = ssid->wep_key[i];
2473                 params.wep_key_len[i] = ssid->wep_key_len[i];
2474         }
2475         params.wep_tx_keyidx = ssid->wep_tx_keyidx;
2476
2477         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
2478             (params.key_mgmt_suite == WPA_KEY_MGMT_PSK ||
2479              params.key_mgmt_suite == WPA_KEY_MGMT_FT_PSK)) {
2480                 params.passphrase = ssid->passphrase;
2481                 if (ssid->psk_set)
2482                         params.psk = ssid->psk;
2483         }
2484
2485         if (wpa_s->conf->key_mgmt_offload) {
2486                 if (params.key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X ||
2487                     params.key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 ||
2488                     params.key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B ||
2489                     params.key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B_192)
2490                         params.req_key_mgmt_offload =
2491                                 ssid->proactive_key_caching < 0 ?
2492                                 wpa_s->conf->okc : ssid->proactive_key_caching;
2493                 else
2494                         params.req_key_mgmt_offload = 1;
2495
2496                 if ((params.key_mgmt_suite == WPA_KEY_MGMT_PSK ||
2497                      params.key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 ||
2498                      params.key_mgmt_suite == WPA_KEY_MGMT_FT_PSK) &&
2499                     ssid->psk_set)
2500                         params.psk = ssid->psk;
2501         }
2502
2503         params.drop_unencrypted = use_crypt;
2504
2505 #ifdef CONFIG_IEEE80211W
2506         params.mgmt_frame_protection = wpas_get_ssid_pmf(wpa_s, ssid);
2507         if (params.mgmt_frame_protection != NO_MGMT_FRAME_PROTECTION && bss) {
2508                 const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
2509                 struct wpa_ie_data ie;
2510                 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ie) == 0 &&
2511                     ie.capabilities &
2512                     (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
2513                         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Selected AP supports "
2514                                 "MFP: require MFP");
2515                         params.mgmt_frame_protection =
2516                                 MGMT_FRAME_PROTECTION_REQUIRED;
2517                 }
2518         }
2519 #endif /* CONFIG_IEEE80211W */
2520
2521         params.p2p = ssid->p2p_group;
2522
2523         if (wpa_s->p2pdev->set_sta_uapsd)
2524                 params.uapsd = wpa_s->p2pdev->sta_uapsd;
2525         else
2526                 params.uapsd = -1;
2527
2528 #ifdef CONFIG_HT_OVERRIDES
2529         os_memset(&htcaps, 0, sizeof(htcaps));
2530         os_memset(&htcaps_mask, 0, sizeof(htcaps_mask));
2531         params.htcaps = (u8 *) &htcaps;
2532         params.htcaps_mask = (u8 *) &htcaps_mask;
2533         wpa_supplicant_apply_ht_overrides(wpa_s, ssid, &params);
2534 #endif /* CONFIG_HT_OVERRIDES */
2535 #ifdef CONFIG_VHT_OVERRIDES
2536         os_memset(&vhtcaps, 0, sizeof(vhtcaps));
2537         os_memset(&vhtcaps_mask, 0, sizeof(vhtcaps_mask));
2538         params.vhtcaps = &vhtcaps;
2539         params.vhtcaps_mask = &vhtcaps_mask;
2540         wpa_supplicant_apply_vht_overrides(wpa_s, ssid, &params);
2541 #endif /* CONFIG_VHT_OVERRIDES */
2542
2543 #ifdef CONFIG_P2P
2544         /*
2545          * If multi-channel concurrency is not supported, check for any
2546          * frequency conflict. In case of any frequency conflict, remove the
2547          * least prioritized connection.
2548          */
2549         if (wpa_s->num_multichan_concurrent < 2) {
2550                 int freq, num;
2551                 num = get_shared_radio_freqs(wpa_s, &freq, 1);
2552                 if (num > 0 && freq > 0 && freq != params.freq.freq) {
2553                         wpa_printf(MSG_DEBUG,
2554                                    "Assoc conflicting freq found (%d != %d)",
2555                                    freq, params.freq.freq);
2556                         if (wpas_p2p_handle_frequency_conflicts(
2557                                     wpa_s, params.freq.freq, ssid) < 0) {
2558                                 wpas_connect_work_done(wpa_s);
2559                                 return;
2560                         }
2561                 }
2562         }
2563 #endif /* CONFIG_P2P */
2564
2565         if (wpa_s->reassoc_same_ess && !is_zero_ether_addr(prev_bssid) &&
2566             wpa_s->current_ssid)
2567                 params.prev_bssid = prev_bssid;
2568
2569         ret = wpa_drv_associate(wpa_s, &params);
2570         if (ret < 0) {
2571                 wpa_msg(wpa_s, MSG_INFO, "Association request to the driver "
2572                         "failed");
2573                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SANE_ERROR_CODES) {
2574                         /*
2575                          * The driver is known to mean what is saying, so we
2576                          * can stop right here; the association will not
2577                          * succeed.
2578                          */
2579                         wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
2580                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2581                         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
2582                         return;
2583                 }
2584                 /* try to continue anyway; new association will be tried again
2585                  * after timeout */
2586                 assoc_failed = 1;
2587         }
2588
2589         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2590                 /* Set the key after the association just in case association
2591                  * cleared the previously configured key. */
2592                 wpa_supplicant_set_wpa_none_key(wpa_s, ssid);
2593                 /* No need to timeout authentication since there is no key
2594                  * management. */
2595                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2596                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2597 #ifdef CONFIG_IBSS_RSN
2598         } else if (ssid->mode == WPAS_MODE_IBSS &&
2599                    wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
2600                    wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) {
2601                 /*
2602                  * RSN IBSS authentication is per-STA and we can disable the
2603                  * per-BSSID authentication.
2604                  */
2605                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2606 #endif /* CONFIG_IBSS_RSN */
2607         } else {
2608                 /* Timeout for IEEE 802.11 authentication and association */
2609                 int timeout = 60;
2610
2611                 if (assoc_failed) {
2612                         /* give IBSS a bit more time */
2613                         timeout = ssid->mode == WPAS_MODE_IBSS ? 10 : 5;
2614                 } else if (wpa_s->conf->ap_scan == 1) {
2615                         /* give IBSS a bit more time */
2616                         timeout = ssid->mode == WPAS_MODE_IBSS ? 20 : 10;
2617                 }
2618                 wpa_supplicant_req_auth_timeout(wpa_s, timeout, 0);
2619         }
2620
2621         if (wep_keys_set &&
2622             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC)) {
2623                 /* Set static WEP keys again */
2624                 wpa_set_wep_keys(wpa_s, ssid);
2625         }
2626
2627         if (wpa_s->current_ssid && wpa_s->current_ssid != ssid) {
2628                 /*
2629                  * Do not allow EAP session resumption between different
2630                  * network configurations.
2631                  */
2632                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
2633         }
2634         old_ssid = wpa_s->current_ssid;
2635         wpa_s->current_ssid = ssid;
2636
2637         if (!wpas_driver_bss_selection(wpa_s) || ssid->bssid_set) {
2638                 wpa_s->current_bss = bss;
2639 #ifdef CONFIG_HS20
2640                 hs20_configure_frame_filters(wpa_s);
2641 #endif /* CONFIG_HS20 */
2642         }
2643
2644         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
2645         wpa_supplicant_initiate_eapol(wpa_s);
2646         if (old_ssid != wpa_s->current_ssid)
2647                 wpas_notify_network_changed(wpa_s);
2648 }
2649
2650
2651 static void wpa_supplicant_clear_connection(struct wpa_supplicant *wpa_s,
2652                                             const u8 *addr)
2653 {
2654         struct wpa_ssid *old_ssid;
2655
2656         wpas_connect_work_done(wpa_s);
2657         wpa_clear_keys(wpa_s, addr);
2658         old_ssid = wpa_s->current_ssid;
2659         wpa_supplicant_mark_disassoc(wpa_s);
2660         wpa_sm_set_config(wpa_s->wpa, NULL);
2661         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
2662         if (old_ssid != wpa_s->current_ssid)
2663                 wpas_notify_network_changed(wpa_s);
2664         eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
2665 }
2666
2667
2668 /**
2669  * wpa_supplicant_deauthenticate - Deauthenticate the current connection
2670  * @wpa_s: Pointer to wpa_supplicant data
2671  * @reason_code: IEEE 802.11 reason code for the deauthenticate frame
2672  *
2673  * This function is used to request %wpa_supplicant to deauthenticate from the
2674  * current AP.
2675  */
2676 void wpa_supplicant_deauthenticate(struct wpa_supplicant *wpa_s,
2677                                    int reason_code)
2678 {
2679         u8 *addr = NULL;
2680         union wpa_event_data event;
2681         int zero_addr = 0;
2682
2683         wpa_dbg(wpa_s, MSG_DEBUG, "Request to deauthenticate - bssid=" MACSTR
2684                 " pending_bssid=" MACSTR " reason=%d state=%s",
2685                 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
2686                 reason_code, wpa_supplicant_state_txt(wpa_s->wpa_state));
2687
2688         if (!is_zero_ether_addr(wpa_s->bssid))
2689                 addr = wpa_s->bssid;
2690         else if (!is_zero_ether_addr(wpa_s->pending_bssid) &&
2691                  (wpa_s->wpa_state == WPA_AUTHENTICATING ||
2692                   wpa_s->wpa_state == WPA_ASSOCIATING))
2693                 addr = wpa_s->pending_bssid;
2694         else if (wpa_s->wpa_state == WPA_ASSOCIATING) {
2695                 /*
2696                  * When using driver-based BSS selection, we may not know the
2697                  * BSSID with which we are currently trying to associate. We
2698                  * need to notify the driver of this disconnection even in such
2699                  * a case, so use the all zeros address here.
2700                  */
2701                 addr = wpa_s->bssid;
2702                 zero_addr = 1;
2703         }
2704
2705 #ifdef CONFIG_TDLS
2706         wpa_tdls_teardown_peers(wpa_s->wpa);
2707 #endif /* CONFIG_TDLS */
2708
2709 #ifdef CONFIG_MESH
2710         if (wpa_s->ifmsh) {
2711                 wpa_msg(wpa_s, MSG_INFO, MESH_GROUP_REMOVED "%s",
2712                         wpa_s->ifname);
2713                 wpa_supplicant_leave_mesh(wpa_s);
2714         }
2715 #endif /* CONFIG_MESH */
2716
2717         if (addr) {
2718                 wpa_drv_deauthenticate(wpa_s, addr, reason_code);
2719                 os_memset(&event, 0, sizeof(event));
2720                 event.deauth_info.reason_code = (u16) reason_code;
2721                 event.deauth_info.locally_generated = 1;
2722                 wpa_supplicant_event(wpa_s, EVENT_DEAUTH, &event);
2723                 if (zero_addr)
2724                         addr = NULL;
2725         }
2726
2727         wpa_supplicant_clear_connection(wpa_s, addr);
2728 }
2729
2730 static void wpa_supplicant_enable_one_network(struct wpa_supplicant *wpa_s,
2731                                               struct wpa_ssid *ssid)
2732 {
2733         if (!ssid || !ssid->disabled || ssid->disabled == 2)
2734                 return;
2735
2736         ssid->disabled = 0;
2737         wpas_clear_temp_disabled(wpa_s, ssid, 1);
2738         wpas_notify_network_enabled_changed(wpa_s, ssid);
2739
2740         /*
2741          * Try to reassociate since there is no current configuration and a new
2742          * network was made available.
2743          */
2744         if (!wpa_s->current_ssid && !wpa_s->disconnected)
2745                 wpa_s->reassociate = 1;
2746 }
2747
2748
2749 /**
2750  * wpa_supplicant_enable_network - Mark a configured network as enabled
2751  * @wpa_s: wpa_supplicant structure for a network interface
2752  * @ssid: wpa_ssid structure for a configured network or %NULL
2753  *
2754  * Enables the specified network or all networks if no network specified.
2755  */
2756 void wpa_supplicant_enable_network(struct wpa_supplicant *wpa_s,
2757                                    struct wpa_ssid *ssid)
2758 {
2759         if (ssid == NULL) {
2760                 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next)
2761                         wpa_supplicant_enable_one_network(wpa_s, ssid);
2762         } else
2763                 wpa_supplicant_enable_one_network(wpa_s, ssid);
2764
2765         if (wpa_s->reassociate && !wpa_s->disconnected &&
2766             (!wpa_s->current_ssid ||
2767              wpa_s->wpa_state == WPA_DISCONNECTED ||
2768              wpa_s->wpa_state == WPA_SCANNING)) {
2769                 if (wpa_s->sched_scanning) {
2770                         wpa_printf(MSG_DEBUG, "Stop ongoing sched_scan to add "
2771                                    "new network to scan filters");
2772                         wpa_supplicant_cancel_sched_scan(wpa_s);
2773                 }
2774
2775                 if (wpa_supplicant_fast_associate(wpa_s) != 1) {
2776                         wpa_s->scan_req = NORMAL_SCAN_REQ;
2777                         wpa_supplicant_req_scan(wpa_s, 0, 0);
2778                 }
2779         }
2780 }
2781
2782
2783 /**
2784  * wpa_supplicant_disable_network - Mark a configured network as disabled
2785  * @wpa_s: wpa_supplicant structure for a network interface
2786  * @ssid: wpa_ssid structure for a configured network or %NULL
2787  *
2788  * Disables the specified network or all networks if no network specified.
2789  */
2790 void wpa_supplicant_disable_network(struct wpa_supplicant *wpa_s,
2791                                     struct wpa_ssid *ssid)
2792 {
2793         struct wpa_ssid *other_ssid;
2794         int was_disabled;
2795
2796         if (ssid == NULL) {
2797                 if (wpa_s->sched_scanning)
2798                         wpa_supplicant_cancel_sched_scan(wpa_s);
2799
2800                 for (other_ssid = wpa_s->conf->ssid; other_ssid;
2801                      other_ssid = other_ssid->next) {
2802                         was_disabled = other_ssid->disabled;
2803                         if (was_disabled == 2)
2804                                 continue; /* do not change persistent P2P group
2805                                            * data */
2806
2807                         other_ssid->disabled = 1;
2808
2809                         if (was_disabled != other_ssid->disabled)
2810                                 wpas_notify_network_enabled_changed(
2811                                         wpa_s, other_ssid);
2812                 }
2813                 if (wpa_s->current_ssid)
2814                         wpa_supplicant_deauthenticate(
2815                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2816         } else if (ssid->disabled != 2) {
2817                 if (ssid == wpa_s->current_ssid)
2818                         wpa_supplicant_deauthenticate(
2819                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2820
2821                 was_disabled = ssid->disabled;
2822
2823                 ssid->disabled = 1;
2824
2825                 if (was_disabled != ssid->disabled) {
2826                         wpas_notify_network_enabled_changed(wpa_s, ssid);
2827                         if (wpa_s->sched_scanning) {
2828                                 wpa_printf(MSG_DEBUG, "Stop ongoing sched_scan "
2829                                            "to remove network from filters");
2830                                 wpa_supplicant_cancel_sched_scan(wpa_s);
2831                                 wpa_supplicant_req_scan(wpa_s, 0, 0);
2832                         }
2833                 }
2834         }
2835 }
2836
2837
2838 /**
2839  * wpa_supplicant_select_network - Attempt association with a network
2840  * @wpa_s: wpa_supplicant structure for a network interface
2841  * @ssid: wpa_ssid structure for a configured network or %NULL for any network
2842  */
2843 void wpa_supplicant_select_network(struct wpa_supplicant *wpa_s,
2844                                    struct wpa_ssid *ssid)
2845 {
2846
2847         struct wpa_ssid *other_ssid;
2848         int disconnected = 0;
2849
2850         if (ssid && ssid != wpa_s->current_ssid && wpa_s->current_ssid) {
2851                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2852                         wpa_s->own_disconnect_req = 1;
2853                 wpa_supplicant_deauthenticate(
2854                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2855                 disconnected = 1;
2856         }
2857
2858         if (ssid)
2859                 wpas_clear_temp_disabled(wpa_s, ssid, 1);
2860
2861         /*
2862          * Mark all other networks disabled or mark all networks enabled if no
2863          * network specified.
2864          */
2865         for (other_ssid = wpa_s->conf->ssid; other_ssid;
2866              other_ssid = other_ssid->next) {
2867                 int was_disabled = other_ssid->disabled;
2868                 if (was_disabled == 2)
2869                         continue; /* do not change persistent P2P group data */
2870
2871                 other_ssid->disabled = ssid ? (ssid->id != other_ssid->id) : 0;
2872                 if (was_disabled && !other_ssid->disabled)
2873                         wpas_clear_temp_disabled(wpa_s, other_ssid, 0);
2874
2875                 if (was_disabled != other_ssid->disabled)
2876                         wpas_notify_network_enabled_changed(wpa_s, other_ssid);
2877         }
2878
2879         if (ssid && ssid == wpa_s->current_ssid && wpa_s->current_ssid &&
2880             wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2881                 /* We are already associated with the selected network */
2882                 wpa_printf(MSG_DEBUG, "Already associated with the "
2883                            "selected network - do nothing");
2884                 return;
2885         }
2886
2887         if (ssid) {
2888                 wpa_s->current_ssid = ssid;
2889                 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
2890                 wpa_s->connect_without_scan =
2891                         (ssid->mode == WPAS_MODE_MESH) ? ssid : NULL;
2892
2893                 /*
2894                  * Don't optimize next scan freqs since a new ESS has been
2895                  * selected.
2896                  */
2897                 os_free(wpa_s->next_scan_freqs);
2898                 wpa_s->next_scan_freqs = NULL;
2899         } else {
2900                 wpa_s->connect_without_scan = NULL;
2901         }
2902
2903         wpa_s->disconnected = 0;
2904         wpa_s->reassociate = 1;
2905
2906         if (wpa_s->connect_without_scan ||
2907             wpa_supplicant_fast_associate(wpa_s) != 1) {
2908                 wpa_s->scan_req = NORMAL_SCAN_REQ;
2909                 wpa_supplicant_req_scan(wpa_s, 0, disconnected ? 100000 : 0);
2910         }
2911
2912         if (ssid)
2913                 wpas_notify_network_selected(wpa_s, ssid);
2914 }
2915
2916
2917 /**
2918  * wpas_set_pkcs11_engine_and_module_path - Set PKCS #11 engine and module path
2919  * @wpa_s: wpa_supplicant structure for a network interface
2920  * @pkcs11_engine_path: PKCS #11 engine path or NULL
2921  * @pkcs11_module_path: PKCS #11 module path or NULL
2922  * Returns: 0 on success; -1 on failure
2923  *
2924  * Sets the PKCS #11 engine and module path. Both have to be NULL or a valid
2925  * path. If resetting the EAPOL state machine with the new PKCS #11 engine and
2926  * module path fails the paths will be reset to the default value (NULL).
2927  */
2928 int wpas_set_pkcs11_engine_and_module_path(struct wpa_supplicant *wpa_s,
2929                                            const char *pkcs11_engine_path,
2930                                            const char *pkcs11_module_path)
2931 {
2932         char *pkcs11_engine_path_copy = NULL;
2933         char *pkcs11_module_path_copy = NULL;
2934
2935         if (pkcs11_engine_path != NULL) {
2936                 pkcs11_engine_path_copy = os_strdup(pkcs11_engine_path);
2937                 if (pkcs11_engine_path_copy == NULL)
2938                         return -1;
2939         }
2940         if (pkcs11_module_path != NULL) {
2941                 pkcs11_module_path_copy = os_strdup(pkcs11_module_path);
2942                 if (pkcs11_module_path_copy == NULL) {
2943                         os_free(pkcs11_engine_path_copy);
2944                         return -1;
2945                 }
2946         }
2947
2948         os_free(wpa_s->conf->pkcs11_engine_path);
2949         os_free(wpa_s->conf->pkcs11_module_path);
2950         wpa_s->conf->pkcs11_engine_path = pkcs11_engine_path_copy;
2951         wpa_s->conf->pkcs11_module_path = pkcs11_module_path_copy;
2952
2953         wpa_sm_set_eapol(wpa_s->wpa, NULL);
2954         eapol_sm_deinit(wpa_s->eapol);
2955         wpa_s->eapol = NULL;
2956         if (wpa_supplicant_init_eapol(wpa_s)) {
2957                 /* Error -> Reset paths to the default value (NULL) once. */
2958                 if (pkcs11_engine_path != NULL && pkcs11_module_path != NULL)
2959                         wpas_set_pkcs11_engine_and_module_path(wpa_s, NULL,
2960                                                                NULL);
2961
2962                 return -1;
2963         }
2964         wpa_sm_set_eapol(wpa_s->wpa, wpa_s->eapol);
2965
2966         return 0;
2967 }
2968
2969
2970 /**
2971  * wpa_supplicant_set_ap_scan - Set AP scan mode for interface
2972  * @wpa_s: wpa_supplicant structure for a network interface
2973  * @ap_scan: AP scan mode
2974  * Returns: 0 if succeed or -1 if ap_scan has an invalid value
2975  *
2976  */
2977 int wpa_supplicant_set_ap_scan(struct wpa_supplicant *wpa_s, int ap_scan)
2978 {
2979
2980         int old_ap_scan;
2981
2982         if (ap_scan < 0 || ap_scan > 2)
2983                 return -1;
2984
2985         if (ap_scan == 2 && os_strcmp(wpa_s->driver->name, "nl80211") == 0) {
2986                 wpa_printf(MSG_INFO,
2987                            "Note: nl80211 driver interface is not designed to be used with ap_scan=2; this can result in connection failures");
2988         }
2989
2990 #ifdef ANDROID
2991         if (ap_scan == 2 && ap_scan != wpa_s->conf->ap_scan &&
2992             wpa_s->wpa_state >= WPA_ASSOCIATING &&
2993             wpa_s->wpa_state < WPA_COMPLETED) {
2994                 wpa_printf(MSG_ERROR, "ap_scan = %d (%d) rejected while "
2995                            "associating", wpa_s->conf->ap_scan, ap_scan);
2996                 return 0;
2997         }
2998 #endif /* ANDROID */
2999
3000         old_ap_scan = wpa_s->conf->ap_scan;
3001         wpa_s->conf->ap_scan = ap_scan;
3002
3003         if (old_ap_scan != wpa_s->conf->ap_scan)
3004                 wpas_notify_ap_scan_changed(wpa_s);
3005
3006         return 0;
3007 }
3008
3009
3010 /**
3011  * wpa_supplicant_set_bss_expiration_age - Set BSS entry expiration age
3012  * @wpa_s: wpa_supplicant structure for a network interface
3013  * @expire_age: Expiration age in seconds
3014  * Returns: 0 if succeed or -1 if expire_age has an invalid value
3015  *
3016  */
3017 int wpa_supplicant_set_bss_expiration_age(struct wpa_supplicant *wpa_s,
3018                                           unsigned int bss_expire_age)
3019 {
3020         if (bss_expire_age < 10) {
3021                 wpa_msg(wpa_s, MSG_ERROR, "Invalid bss expiration age %u",
3022                         bss_expire_age);
3023                 return -1;
3024         }
3025         wpa_msg(wpa_s, MSG_DEBUG, "Setting bss expiration age: %d sec",
3026                 bss_expire_age);
3027         wpa_s->conf->bss_expiration_age = bss_expire_age;
3028
3029         return 0;
3030 }
3031
3032
3033 /**
3034  * wpa_supplicant_set_bss_expiration_count - Set BSS entry expiration scan count
3035  * @wpa_s: wpa_supplicant structure for a network interface
3036  * @expire_count: number of scans after which an unseen BSS is reclaimed
3037  * Returns: 0 if succeed or -1 if expire_count has an invalid value
3038  *
3039  */
3040 int wpa_supplicant_set_bss_expiration_count(struct wpa_supplicant *wpa_s,
3041                                             unsigned int bss_expire_count)
3042 {
3043         if (bss_expire_count < 1) {
3044                 wpa_msg(wpa_s, MSG_ERROR, "Invalid bss expiration count %u",
3045                         bss_expire_count);
3046                 return -1;
3047         }
3048         wpa_msg(wpa_s, MSG_DEBUG, "Setting bss expiration scan count: %u",
3049                 bss_expire_count);
3050         wpa_s->conf->bss_expiration_scan_count = bss_expire_count;
3051
3052         return 0;
3053 }
3054
3055
3056 /**
3057  * wpa_supplicant_set_scan_interval - Set scan interval
3058  * @wpa_s: wpa_supplicant structure for a network interface
3059  * @scan_interval: scan interval in seconds
3060  * Returns: 0 if succeed or -1 if scan_interval has an invalid value
3061  *
3062  */
3063 int wpa_supplicant_set_scan_interval(struct wpa_supplicant *wpa_s,
3064                                      int scan_interval)
3065 {
3066         if (scan_interval < 0) {
3067                 wpa_msg(wpa_s, MSG_ERROR, "Invalid scan interval %d",
3068                         scan_interval);
3069                 return -1;
3070         }
3071         wpa_msg(wpa_s, MSG_DEBUG, "Setting scan interval: %d sec",
3072                 scan_interval);
3073         wpa_supplicant_update_scan_int(wpa_s, scan_interval);
3074
3075         return 0;
3076 }
3077
3078
3079 /**
3080  * wpa_supplicant_set_debug_params - Set global debug params
3081  * @global: wpa_global structure
3082  * @debug_level: debug level
3083  * @debug_timestamp: determines if show timestamp in debug data
3084  * @debug_show_keys: determines if show keys in debug data
3085  * Returns: 0 if succeed or -1 if debug_level has wrong value
3086  */
3087 int wpa_supplicant_set_debug_params(struct wpa_global *global, int debug_level,
3088                                     int debug_timestamp, int debug_show_keys)
3089 {
3090
3091         int old_level, old_timestamp, old_show_keys;
3092
3093         /* check for allowed debuglevels */
3094         if (debug_level != MSG_EXCESSIVE &&
3095             debug_level != MSG_MSGDUMP &&
3096             debug_level != MSG_DEBUG &&
3097             debug_level != MSG_INFO &&
3098             debug_level != MSG_WARNING &&
3099             debug_level != MSG_ERROR)
3100                 return -1;
3101
3102         old_level = wpa_debug_level;
3103         old_timestamp = wpa_debug_timestamp;
3104         old_show_keys = wpa_debug_show_keys;
3105
3106         wpa_debug_level = debug_level;
3107         wpa_debug_timestamp = debug_timestamp ? 1 : 0;
3108         wpa_debug_show_keys = debug_show_keys ? 1 : 0;
3109
3110         if (wpa_debug_level != old_level)
3111                 wpas_notify_debug_level_changed(global);
3112         if (wpa_debug_timestamp != old_timestamp)
3113                 wpas_notify_debug_timestamp_changed(global);
3114         if (wpa_debug_show_keys != old_show_keys)
3115                 wpas_notify_debug_show_keys_changed(global);
3116
3117         return 0;
3118 }
3119
3120
3121 /**
3122  * wpa_supplicant_get_ssid - Get a pointer to the current network structure
3123  * @wpa_s: Pointer to wpa_supplicant data
3124  * Returns: A pointer to the current network structure or %NULL on failure
3125  */
3126 struct wpa_ssid * wpa_supplicant_get_ssid(struct wpa_supplicant *wpa_s)
3127 {
3128         struct wpa_ssid *entry;
3129         u8 ssid[SSID_MAX_LEN];
3130         int res;
3131         size_t ssid_len;
3132         u8 bssid[ETH_ALEN];
3133         int wired;
3134
3135         res = wpa_drv_get_ssid(wpa_s, ssid);
3136         if (res < 0) {
3137                 wpa_msg(wpa_s, MSG_WARNING, "Could not read SSID from "
3138                         "driver");
3139                 return NULL;
3140         }
3141         ssid_len = res;
3142
3143         if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
3144                 wpa_msg(wpa_s, MSG_WARNING, "Could not read BSSID from "
3145                         "driver");
3146                 return NULL;
3147         }
3148
3149         wired = wpa_s->conf->ap_scan == 0 &&
3150                 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED);
3151
3152         entry = wpa_s->conf->ssid;
3153         while (entry) {
3154                 if (!wpas_network_disabled(wpa_s, entry) &&
3155                     ((ssid_len == entry->ssid_len &&
3156                       os_memcmp(ssid, entry->ssid, ssid_len) == 0) || wired) &&
3157                     (!entry->bssid_set ||
3158                      os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0))
3159                         return entry;
3160 #ifdef CONFIG_WPS
3161                 if (!wpas_network_disabled(wpa_s, entry) &&
3162                     (entry->key_mgmt & WPA_KEY_MGMT_WPS) &&
3163                     (entry->ssid == NULL || entry->ssid_len == 0) &&
3164                     (!entry->bssid_set ||
3165                      os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0))
3166                         return entry;
3167 #endif /* CONFIG_WPS */
3168
3169                 if (!wpas_network_disabled(wpa_s, entry) && entry->bssid_set &&
3170                     entry->ssid_len == 0 &&
3171                     os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0)
3172                         return entry;
3173
3174                 entry = entry->next;
3175         }
3176
3177         return NULL;
3178 }
3179
3180
3181 static int select_driver(struct wpa_supplicant *wpa_s, int i)
3182 {
3183         struct wpa_global *global = wpa_s->global;
3184
3185         if (wpa_drivers[i]->global_init && global->drv_priv[i] == NULL) {
3186                 global->drv_priv[i] = wpa_drivers[i]->global_init(global);
3187                 if (global->drv_priv[i] == NULL) {
3188                         wpa_printf(MSG_ERROR, "Failed to initialize driver "
3189                                    "'%s'", wpa_drivers[i]->name);
3190                         return -1;
3191                 }
3192         }
3193
3194         wpa_s->driver = wpa_drivers[i];
3195         wpa_s->global_drv_priv = global->drv_priv[i];
3196
3197         return 0;
3198 }
3199
3200
3201 static int wpa_supplicant_set_driver(struct wpa_supplicant *wpa_s,
3202                                      const char *name)
3203 {
3204         int i;
3205         size_t len;
3206         const char *pos, *driver = name;
3207
3208         if (wpa_s == NULL)
3209                 return -1;
3210
3211         if (wpa_drivers[0] == NULL) {
3212                 wpa_msg(wpa_s, MSG_ERROR, "No driver interfaces build into "
3213                         "wpa_supplicant");
3214                 return -1;
3215         }
3216
3217         if (name == NULL) {
3218                 /* default to first driver in the list */
3219                 return select_driver(wpa_s, 0);
3220         }
3221
3222         do {
3223                 pos = os_strchr(driver, ',');
3224                 if (pos)
3225                         len = pos - driver;
3226                 else
3227                         len = os_strlen(driver);
3228
3229                 for (i = 0; wpa_drivers[i]; i++) {
3230                         if (os_strlen(wpa_drivers[i]->name) == len &&
3231                             os_strncmp(driver, wpa_drivers[i]->name, len) ==
3232                             0) {
3233                                 /* First driver that succeeds wins */
3234                                 if (select_driver(wpa_s, i) == 0)
3235                                         return 0;
3236                         }
3237                 }
3238
3239                 driver = pos + 1;
3240         } while (pos);
3241
3242         wpa_msg(wpa_s, MSG_ERROR, "Unsupported driver '%s'", name);
3243         return -1;
3244 }
3245
3246
3247 /**
3248  * wpa_supplicant_rx_eapol - Deliver a received EAPOL frame to wpa_supplicant
3249  * @ctx: Context pointer (wpa_s); this is the ctx variable registered
3250  *      with struct wpa_driver_ops::init()
3251  * @src_addr: Source address of the EAPOL frame
3252  * @buf: EAPOL data starting from the EAPOL header (i.e., no Ethernet header)
3253  * @len: Length of the EAPOL data
3254  *
3255  * This function is called for each received EAPOL frame. Most driver
3256  * interfaces rely on more generic OS mechanism for receiving frames through
3257  * l2_packet, but if such a mechanism is not available, the driver wrapper may
3258  * take care of received EAPOL frames and deliver them to the core supplicant
3259  * code by calling this function.
3260  */
3261 void wpa_supplicant_rx_eapol(void *ctx, const u8 *src_addr,
3262                              const u8 *buf, size_t len)
3263 {
3264         struct wpa_supplicant *wpa_s = ctx;
3265
3266         wpa_dbg(wpa_s, MSG_DEBUG, "RX EAPOL from " MACSTR, MAC2STR(src_addr));
3267         wpa_hexdump(MSG_MSGDUMP, "RX EAPOL", buf, len);
3268
3269 #ifdef CONFIG_PEERKEY
3270         if (wpa_s->wpa_state > WPA_ASSOCIATED && wpa_s->current_ssid &&
3271             wpa_s->current_ssid->peerkey &&
3272             !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
3273             wpa_sm_rx_eapol_peerkey(wpa_s->wpa, src_addr, buf, len) == 1) {
3274                 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: Processed PeerKey EAPOL-Key");
3275                 return;
3276         }
3277 #endif /* CONFIG_PEERKEY */
3278
3279         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
3280             (wpa_s->last_eapol_matches_bssid &&
3281 #ifdef CONFIG_AP
3282              !wpa_s->ap_iface &&
3283 #endif /* CONFIG_AP */
3284              os_memcmp(src_addr, wpa_s->bssid, ETH_ALEN) != 0)) {
3285                 /*
3286                  * There is possible race condition between receiving the
3287                  * association event and the EAPOL frame since they are coming
3288                  * through different paths from the driver. In order to avoid
3289                  * issues in trying to process the EAPOL frame before receiving
3290                  * association information, lets queue it for processing until
3291                  * the association event is received. This may also be needed in
3292                  * driver-based roaming case, so also use src_addr != BSSID as a
3293                  * trigger if we have previously confirmed that the
3294                  * Authenticator uses BSSID as the src_addr (which is not the
3295                  * case with wired IEEE 802.1X).
3296                  */
3297                 wpa_dbg(wpa_s, MSG_DEBUG, "Not associated - Delay processing "
3298                         "of received EAPOL frame (state=%s bssid=" MACSTR ")",
3299                         wpa_supplicant_state_txt(wpa_s->wpa_state),
3300                         MAC2STR(wpa_s->bssid));
3301                 wpabuf_free(wpa_s->pending_eapol_rx);
3302                 wpa_s->pending_eapol_rx = wpabuf_alloc_copy(buf, len);
3303                 if (wpa_s->pending_eapol_rx) {
3304                         os_get_reltime(&wpa_s->pending_eapol_rx_time);
3305                         os_memcpy(wpa_s->pending_eapol_rx_src, src_addr,
3306                                   ETH_ALEN);
3307                 }
3308                 return;
3309         }
3310
3311         wpa_s->last_eapol_matches_bssid =
3312                 os_memcmp(src_addr, wpa_s->bssid, ETH_ALEN) == 0;
3313
3314 #ifdef CONFIG_AP
3315         if (wpa_s->ap_iface) {
3316                 wpa_supplicant_ap_rx_eapol(wpa_s, src_addr, buf, len);
3317                 return;
3318         }
3319 #endif /* CONFIG_AP */
3320
3321         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) {
3322                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignored received EAPOL frame since "
3323                         "no key management is configured");
3324                 return;
3325         }
3326
3327         if (wpa_s->eapol_received == 0 &&
3328             (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) ||
3329              !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) ||
3330              wpa_s->wpa_state != WPA_COMPLETED) &&
3331             (wpa_s->current_ssid == NULL ||
3332              wpa_s->current_ssid->mode != IEEE80211_MODE_IBSS)) {
3333                 /* Timeout for completing IEEE 802.1X and WPA authentication */
3334                 int timeout = 10;
3335
3336                 if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
3337                     wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA ||
3338                     wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) {
3339                         /* Use longer timeout for IEEE 802.1X/EAP */
3340                         timeout = 70;
3341                 }
3342
3343 #ifdef CONFIG_WPS
3344                 if (wpa_s->current_ssid && wpa_s->current_bss &&
3345                     (wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
3346                     eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) {
3347                         /*
3348                          * Use shorter timeout if going through WPS AP iteration
3349                          * for PIN config method with an AP that does not
3350                          * advertise Selected Registrar.
3351                          */
3352                         struct wpabuf *wps_ie;
3353
3354                         wps_ie = wpa_bss_get_vendor_ie_multi(
3355                                 wpa_s->current_bss, WPS_IE_VENDOR_TYPE);
3356                         if (wps_ie &&
3357                             !wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1))
3358                                 timeout = 10;
3359                         wpabuf_free(wps_ie);
3360                 }
3361 #endif /* CONFIG_WPS */
3362
3363                 wpa_supplicant_req_auth_timeout(wpa_s, timeout, 0);
3364         }
3365         wpa_s->eapol_received++;
3366
3367         if (wpa_s->countermeasures) {
3368                 wpa_msg(wpa_s, MSG_INFO, "WPA: Countermeasures - dropped "
3369                         "EAPOL packet");
3370                 return;
3371         }
3372
3373 #ifdef CONFIG_IBSS_RSN
3374         if (wpa_s->current_ssid &&
3375             wpa_s->current_ssid->mode == WPAS_MODE_IBSS) {
3376                 ibss_rsn_rx_eapol(wpa_s->ibss_rsn, src_addr, buf, len);
3377                 return;
3378         }
3379 #endif /* CONFIG_IBSS_RSN */
3380
3381         /* Source address of the incoming EAPOL frame could be compared to the
3382          * current BSSID. However, it is possible that a centralized
3383          * Authenticator could be using another MAC address than the BSSID of
3384          * an AP, so just allow any address to be used for now. The replies are
3385          * still sent to the current BSSID (if available), though. */
3386
3387         os_memcpy(wpa_s->last_eapol_src, src_addr, ETH_ALEN);
3388         if (!wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) &&
3389             eapol_sm_rx_eapol(wpa_s->eapol, src_addr, buf, len) > 0)
3390                 return;
3391         wpa_drv_poll(wpa_s);
3392         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE))
3393                 wpa_sm_rx_eapol(wpa_s->wpa, src_addr, buf, len);
3394         else if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
3395                 /*
3396                  * Set portValid = TRUE here since we are going to skip 4-way
3397                  * handshake processing which would normally set portValid. We
3398                  * need this to allow the EAPOL state machines to be completed
3399                  * without going through EAPOL-Key handshake.
3400                  */
3401                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
3402         }
3403 }
3404
3405
3406 int wpa_supplicant_update_mac_addr(struct wpa_supplicant *wpa_s)
3407 {
3408         if ((!wpa_s->p2p_mgmt ||
3409              !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)) &&
3410             !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)) {
3411                 l2_packet_deinit(wpa_s->l2);
3412                 wpa_s->l2 = l2_packet_init(wpa_s->ifname,
3413                                            wpa_drv_get_mac_addr(wpa_s),
3414                                            ETH_P_EAPOL,
3415                                            wpa_supplicant_rx_eapol, wpa_s, 0);
3416                 if (wpa_s->l2 == NULL)
3417                         return -1;
3418         } else {
3419                 const u8 *addr = wpa_drv_get_mac_addr(wpa_s);
3420                 if (addr)
3421                         os_memcpy(wpa_s->own_addr, addr, ETH_ALEN);
3422         }
3423
3424         if (wpa_s->l2 && l2_packet_get_own_addr(wpa_s->l2, wpa_s->own_addr)) {
3425                 wpa_msg(wpa_s, MSG_ERROR, "Failed to get own L2 address");
3426                 return -1;
3427         }
3428
3429         wpa_sm_set_own_addr(wpa_s->wpa, wpa_s->own_addr);
3430
3431         return 0;
3432 }
3433
3434
3435 static void wpa_supplicant_rx_eapol_bridge(void *ctx, const u8 *src_addr,
3436                                            const u8 *buf, size_t len)
3437 {
3438         struct wpa_supplicant *wpa_s = ctx;
3439         const struct l2_ethhdr *eth;
3440
3441         if (len < sizeof(*eth))
3442                 return;
3443         eth = (const struct l2_ethhdr *) buf;
3444
3445         if (os_memcmp(eth->h_dest, wpa_s->own_addr, ETH_ALEN) != 0 &&
3446             !(eth->h_dest[0] & 0x01)) {
3447                 wpa_dbg(wpa_s, MSG_DEBUG, "RX EAPOL from " MACSTR " to " MACSTR
3448                         " (bridge - not for this interface - ignore)",
3449                         MAC2STR(src_addr), MAC2STR(eth->h_dest));
3450                 return;
3451         }
3452
3453         wpa_dbg(wpa_s, MSG_DEBUG, "RX EAPOL from " MACSTR " to " MACSTR
3454                 " (bridge)", MAC2STR(src_addr), MAC2STR(eth->h_dest));
3455         wpa_supplicant_rx_eapol(wpa_s, src_addr, buf + sizeof(*eth),
3456                                 len - sizeof(*eth));
3457 }
3458
3459
3460 /**
3461  * wpa_supplicant_driver_init - Initialize driver interface parameters
3462  * @wpa_s: Pointer to wpa_supplicant data
3463  * Returns: 0 on success, -1 on failure
3464  *
3465  * This function is called to initialize driver interface parameters.
3466  * wpa_drv_init() must have been called before this function to initialize the
3467  * driver interface.
3468  */
3469 int wpa_supplicant_driver_init(struct wpa_supplicant *wpa_s)
3470 {
3471         static int interface_count = 0;
3472
3473         if (wpa_supplicant_update_mac_addr(wpa_s) < 0)
3474                 return -1;
3475
3476         wpa_dbg(wpa_s, MSG_DEBUG, "Own MAC address: " MACSTR,
3477                 MAC2STR(wpa_s->own_addr));
3478         os_memcpy(wpa_s->perm_addr, wpa_s->own_addr, ETH_ALEN);
3479         wpa_sm_set_own_addr(wpa_s->wpa, wpa_s->own_addr);
3480
3481         if (wpa_s->bridge_ifname[0]) {
3482                 wpa_dbg(wpa_s, MSG_DEBUG, "Receiving packets from bridge "
3483                         "interface '%s'", wpa_s->bridge_ifname);
3484                 wpa_s->l2_br = l2_packet_init_bridge(
3485                         wpa_s->bridge_ifname, wpa_s->ifname, wpa_s->own_addr,
3486                         ETH_P_EAPOL, wpa_supplicant_rx_eapol_bridge, wpa_s, 1);
3487                 if (wpa_s->l2_br == NULL) {
3488                         wpa_msg(wpa_s, MSG_ERROR, "Failed to open l2_packet "
3489                                 "connection for the bridge interface '%s'",
3490                                 wpa_s->bridge_ifname);
3491                         return -1;
3492                 }
3493         }
3494
3495         if (wpa_s->conf->ap_scan == 2 &&
3496             os_strcmp(wpa_s->driver->name, "nl80211") == 0) {
3497                 wpa_printf(MSG_INFO,
3498                            "Note: nl80211 driver interface is not designed to be used with ap_scan=2; this can result in connection failures");
3499         }
3500
3501         wpa_clear_keys(wpa_s, NULL);
3502
3503         /* Make sure that TKIP countermeasures are not left enabled (could
3504          * happen if wpa_supplicant is killed during countermeasures. */
3505         wpa_drv_set_countermeasures(wpa_s, 0);
3506
3507         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: flushing PMKID list in the driver");
3508         wpa_drv_flush_pmkid(wpa_s);
3509
3510         wpa_s->prev_scan_ssid = WILDCARD_SSID_SCAN;
3511         wpa_s->prev_scan_wildcard = 0;
3512
3513         if (wpa_supplicant_enabled_networks(wpa_s)) {
3514                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
3515                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
3516                         interface_count = 0;
3517                 }
3518 #ifndef ANDROID
3519                 if (!wpa_s->p2p_mgmt &&
3520                     wpa_supplicant_delayed_sched_scan(wpa_s,
3521                                                       interface_count % 3,
3522                                                       100000))
3523                         wpa_supplicant_req_scan(wpa_s, interface_count % 3,
3524                                                 100000);
3525 #endif /* ANDROID */
3526                 interface_count++;
3527         } else
3528                 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
3529
3530         return 0;
3531 }
3532
3533
3534 static int wpa_supplicant_daemon(const char *pid_file)
3535 {
3536         wpa_printf(MSG_DEBUG, "Daemonize..");
3537         return os_daemonize(pid_file);
3538 }
3539
3540
3541 static struct wpa_supplicant *
3542 wpa_supplicant_alloc(struct wpa_supplicant *parent)
3543 {
3544         struct wpa_supplicant *wpa_s;
3545
3546         wpa_s = os_zalloc(sizeof(*wpa_s));
3547         if (wpa_s == NULL)
3548                 return NULL;
3549         wpa_s->scan_req = INITIAL_SCAN_REQ;
3550         wpa_s->scan_interval = 5;
3551         wpa_s->new_connection = 1;
3552         wpa_s->parent = parent ? parent : wpa_s;
3553         wpa_s->p2pdev = wpa_s->parent;
3554         wpa_s->sched_scanning = 0;
3555
3556         dl_list_init(&wpa_s->bss_tmp_disallowed);
3557
3558         return wpa_s;
3559 }
3560
3561
3562 #ifdef CONFIG_HT_OVERRIDES
3563
3564 static int wpa_set_htcap_mcs(struct wpa_supplicant *wpa_s,
3565                              struct ieee80211_ht_capabilities *htcaps,
3566                              struct ieee80211_ht_capabilities *htcaps_mask,
3567                              const char *ht_mcs)
3568 {
3569         /* parse ht_mcs into hex array */
3570         int i;
3571         const char *tmp = ht_mcs;
3572         char *end = NULL;
3573
3574         /* If ht_mcs is null, do not set anything */
3575         if (!ht_mcs)
3576                 return 0;
3577
3578         /* This is what we are setting in the kernel */
3579         os_memset(&htcaps->supported_mcs_set, 0, IEEE80211_HT_MCS_MASK_LEN);
3580
3581         wpa_msg(wpa_s, MSG_DEBUG, "set_htcap, ht_mcs -:%s:-", ht_mcs);
3582
3583         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
3584                 errno = 0;
3585                 long v = strtol(tmp, &end, 16);
3586                 if (errno == 0) {
3587                         wpa_msg(wpa_s, MSG_DEBUG,
3588                                 "htcap value[%i]: %ld end: %p  tmp: %p",
3589                                 i, v, end, tmp);
3590                         if (end == tmp)
3591                                 break;
3592
3593                         htcaps->supported_mcs_set[i] = v;
3594                         tmp = end;
3595                 } else {
3596                         wpa_msg(wpa_s, MSG_ERROR,
3597                                 "Failed to parse ht-mcs: %s, error: %s\n",
3598                                 ht_mcs, strerror(errno));
3599                         return -1;
3600                 }
3601         }
3602
3603         /*
3604          * If we were able to parse any values, then set mask for the MCS set.
3605          */
3606         if (i) {
3607                 os_memset(&htcaps_mask->supported_mcs_set, 0xff,
3608                           IEEE80211_HT_MCS_MASK_LEN - 1);
3609                 /* skip the 3 reserved bits */
3610                 htcaps_mask->supported_mcs_set[IEEE80211_HT_MCS_MASK_LEN - 1] =
3611                         0x1f;
3612         }
3613
3614         return 0;
3615 }
3616
3617
3618 static int wpa_disable_max_amsdu(struct wpa_supplicant *wpa_s,
3619                                  struct ieee80211_ht_capabilities *htcaps,
3620                                  struct ieee80211_ht_capabilities *htcaps_mask,
3621                                  int disabled)
3622 {
3623         le16 msk;
3624
3625         wpa_msg(wpa_s, MSG_DEBUG, "set_disable_max_amsdu: %d", disabled);
3626
3627         if (disabled == -1)
3628                 return 0;
3629
3630         msk = host_to_le16(HT_CAP_INFO_MAX_AMSDU_SIZE);
3631         htcaps_mask->ht_capabilities_info |= msk;
3632         if (disabled)
3633                 htcaps->ht_capabilities_info &= msk;
3634         else
3635                 htcaps->ht_capabilities_info |= msk;
3636
3637         return 0;
3638 }
3639
3640
3641 static int wpa_set_ampdu_factor(struct wpa_supplicant *wpa_s,
3642                                 struct ieee80211_ht_capabilities *htcaps,
3643                                 struct ieee80211_ht_capabilities *htcaps_mask,
3644                                 int factor)
3645 {
3646         wpa_msg(wpa_s, MSG_DEBUG, "set_ampdu_factor: %d", factor);
3647
3648         if (factor == -1)
3649                 return 0;
3650
3651         if (factor < 0 || factor > 3) {
3652                 wpa_msg(wpa_s, MSG_ERROR, "ampdu_factor: %d out of range. "
3653                         "Must be 0-3 or -1", factor);
3654                 return -EINVAL;
3655         }
3656
3657         htcaps_mask->a_mpdu_params |= 0x3; /* 2 bits for factor */
3658         htcaps->a_mpdu_params &= ~0x3;
3659         htcaps->a_mpdu_params |= factor & 0x3;
3660
3661         return 0;
3662 }
3663
3664
3665 static int wpa_set_ampdu_density(struct wpa_supplicant *wpa_s,
3666                                  struct ieee80211_ht_capabilities *htcaps,
3667                                  struct ieee80211_ht_capabilities *htcaps_mask,
3668                                  int density)
3669 {
3670         wpa_msg(wpa_s, MSG_DEBUG, "set_ampdu_density: %d", density);
3671
3672         if (density == -1)
3673                 return 0;
3674
3675         if (density < 0 || density > 7) {
3676                 wpa_msg(wpa_s, MSG_ERROR,
3677                         "ampdu_density: %d out of range. Must be 0-7 or -1.",
3678                         density);
3679                 return -EINVAL;
3680         }
3681
3682         htcaps_mask->a_mpdu_params |= 0x1C;
3683         htcaps->a_mpdu_params &= ~(0x1C);
3684         htcaps->a_mpdu_params |= (density << 2) & 0x1C;
3685
3686         return 0;
3687 }
3688
3689
3690 static int wpa_set_disable_ht40(struct wpa_supplicant *wpa_s,
3691                                 struct ieee80211_ht_capabilities *htcaps,
3692                                 struct ieee80211_ht_capabilities *htcaps_mask,
3693                                 int disabled)
3694 {
3695         /* Masking these out disables HT40 */
3696         le16 msk = host_to_le16(HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET |
3697                                 HT_CAP_INFO_SHORT_GI40MHZ);
3698
3699         wpa_msg(wpa_s, MSG_DEBUG, "set_disable_ht40: %d", disabled);
3700
3701         if (disabled)
3702                 htcaps->ht_capabilities_info &= ~msk;
3703         else
3704                 htcaps->ht_capabilities_info |= msk;
3705
3706         htcaps_mask->ht_capabilities_info |= msk;
3707
3708         return 0;
3709 }
3710
3711
3712 static int wpa_set_disable_sgi(struct wpa_supplicant *wpa_s,
3713                                struct ieee80211_ht_capabilities *htcaps,
3714                                struct ieee80211_ht_capabilities *htcaps_mask,
3715                                int disabled)
3716 {
3717         /* Masking these out disables SGI */
3718         le16 msk = host_to_le16(HT_CAP_INFO_SHORT_GI20MHZ |
3719                                 HT_CAP_INFO_SHORT_GI40MHZ);
3720
3721         wpa_msg(wpa_s, MSG_DEBUG, "set_disable_sgi: %d", disabled);
3722
3723         if (disabled)
3724                 htcaps->ht_capabilities_info &= ~msk;
3725         else
3726                 htcaps->ht_capabilities_info |= msk;
3727
3728         htcaps_mask->ht_capabilities_info |= msk;
3729
3730         return 0;
3731 }
3732
3733
3734 static int wpa_set_disable_ldpc(struct wpa_supplicant *wpa_s,
3735                                struct ieee80211_ht_capabilities *htcaps,
3736                                struct ieee80211_ht_capabilities *htcaps_mask,
3737                                int disabled)
3738 {
3739         /* Masking these out disables LDPC */
3740         le16 msk = host_to_le16(HT_CAP_INFO_LDPC_CODING_CAP);
3741
3742         wpa_msg(wpa_s, MSG_DEBUG, "set_disable_ldpc: %d", disabled);
3743
3744         if (disabled)
3745                 htcaps->ht_capabilities_info &= ~msk;
3746         else
3747                 htcaps->ht_capabilities_info |= msk;
3748
3749         htcaps_mask->ht_capabilities_info |= msk;
3750
3751         return 0;
3752 }
3753
3754
3755 void wpa_supplicant_apply_ht_overrides(
3756         struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid,
3757         struct wpa_driver_associate_params *params)
3758 {
3759         struct ieee80211_ht_capabilities *htcaps;
3760         struct ieee80211_ht_capabilities *htcaps_mask;
3761
3762         if (!ssid)
3763                 return;
3764
3765         params->disable_ht = ssid->disable_ht;
3766         if (!params->htcaps || !params->htcaps_mask)
3767                 return;
3768
3769         htcaps = (struct ieee80211_ht_capabilities *) params->htcaps;
3770         htcaps_mask = (struct ieee80211_ht_capabilities *) params->htcaps_mask;
3771         wpa_set_htcap_mcs(wpa_s, htcaps, htcaps_mask, ssid->ht_mcs);
3772         wpa_disable_max_amsdu(wpa_s, htcaps, htcaps_mask,
3773                               ssid->disable_max_amsdu);
3774         wpa_set_ampdu_factor(wpa_s, htcaps, htcaps_mask, ssid->ampdu_factor);
3775         wpa_set_ampdu_density(wpa_s, htcaps, htcaps_mask, ssid->ampdu_density);
3776         wpa_set_disable_ht40(wpa_s, htcaps, htcaps_mask, ssid->disable_ht40);
3777         wpa_set_disable_sgi(wpa_s, htcaps, htcaps_mask, ssid->disable_sgi);
3778         wpa_set_disable_ldpc(wpa_s, htcaps, htcaps_mask, ssid->disable_ldpc);
3779
3780         if (ssid->ht40_intolerant) {
3781                 le16 bit = host_to_le16(HT_CAP_INFO_40MHZ_INTOLERANT);
3782                 htcaps->ht_capabilities_info |= bit;
3783                 htcaps_mask->ht_capabilities_info |= bit;
3784         }
3785 }
3786
3787 #endif /* CONFIG_HT_OVERRIDES */
3788
3789
3790 #ifdef CONFIG_VHT_OVERRIDES
3791 void wpa_supplicant_apply_vht_overrides(
3792         struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid,
3793         struct wpa_driver_associate_params *params)
3794 {
3795         struct ieee80211_vht_capabilities *vhtcaps;
3796         struct ieee80211_vht_capabilities *vhtcaps_mask;
3797
3798         if (!ssid)
3799                 return;
3800
3801         params->disable_vht = ssid->disable_vht;
3802
3803         vhtcaps = (void *) params->vhtcaps;
3804         vhtcaps_mask = (void *) params->vhtcaps_mask;
3805
3806         if (!vhtcaps || !vhtcaps_mask)
3807                 return;
3808
3809         vhtcaps->vht_capabilities_info = ssid->vht_capa;
3810         vhtcaps_mask->vht_capabilities_info = ssid->vht_capa_mask;
3811
3812 #ifdef CONFIG_HT_OVERRIDES
3813         /* if max ampdu is <= 3, we have to make the HT cap the same */
3814         if (ssid->vht_capa_mask & VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MAX) {
3815                 int max_ampdu;
3816
3817                 max_ampdu = (ssid->vht_capa &
3818                              VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MAX) >>
3819                         VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MAX_SHIFT;
3820
3821                 max_ampdu = max_ampdu < 3 ? max_ampdu : 3;
3822                 wpa_set_ampdu_factor(wpa_s,
3823                                      (void *) params->htcaps,
3824                                      (void *) params->htcaps_mask,
3825                                      max_ampdu);
3826         }
3827 #endif /* CONFIG_HT_OVERRIDES */
3828
3829 #define OVERRIDE_MCS(i)                                                 \
3830         if (ssid->vht_tx_mcs_nss_ ##i >= 0) {                           \
3831                 vhtcaps_mask->vht_supported_mcs_set.tx_map |=           \
3832                         3 << 2 * (i - 1);                               \
3833                 vhtcaps->vht_supported_mcs_set.tx_map |=                \
3834                         ssid->vht_tx_mcs_nss_ ##i << 2 * (i - 1);       \
3835         }                                                               \
3836         if (ssid->vht_rx_mcs_nss_ ##i >= 0) {                           \
3837                 vhtcaps_mask->vht_supported_mcs_set.rx_map |=           \
3838                         3 << 2 * (i - 1);                               \
3839                 vhtcaps->vht_supported_mcs_set.rx_map |=                \
3840                         ssid->vht_rx_mcs_nss_ ##i << 2 * (i - 1);       \
3841         }
3842
3843         OVERRIDE_MCS(1);
3844         OVERRIDE_MCS(2);
3845         OVERRIDE_MCS(3);
3846         OVERRIDE_MCS(4);
3847         OVERRIDE_MCS(5);
3848         OVERRIDE_MCS(6);
3849         OVERRIDE_MCS(7);
3850         OVERRIDE_MCS(8);
3851 }
3852 #endif /* CONFIG_VHT_OVERRIDES */
3853
3854
3855 static int pcsc_reader_init(struct wpa_supplicant *wpa_s)
3856 {
3857 #ifdef PCSC_FUNCS
3858         size_t len;
3859
3860         if (!wpa_s->conf->pcsc_reader)
3861                 return 0;
3862
3863         wpa_s->scard = scard_init(wpa_s->conf->pcsc_reader);
3864         if (!wpa_s->scard)
3865                 return 1;
3866
3867         if (wpa_s->conf->pcsc_pin &&
3868             scard_set_pin(wpa_s->scard, wpa_s->conf->pcsc_pin) < 0) {
3869                 scard_deinit(wpa_s->scard);
3870                 wpa_s->scard = NULL;
3871                 wpa_msg(wpa_s, MSG_ERROR, "PC/SC PIN validation failed");
3872                 return -1;
3873         }
3874
3875         len = sizeof(wpa_s->imsi) - 1;
3876         if (scard_get_imsi(wpa_s->scard, wpa_s->imsi, &len)) {
3877                 scard_deinit(wpa_s->scard);
3878                 wpa_s->scard = NULL;
3879                 wpa_msg(wpa_s, MSG_ERROR, "Could not read IMSI");
3880                 return -1;
3881         }
3882         wpa_s->imsi[len] = '\0';
3883
3884         wpa_s->mnc_len = scard_get_mnc_len(wpa_s->scard);
3885
3886         wpa_printf(MSG_DEBUG, "SCARD: IMSI %s (MNC length %d)",
3887                    wpa_s->imsi, wpa_s->mnc_len);
3888
3889         wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
3890         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
3891 #endif /* PCSC_FUNCS */
3892
3893         return 0;
3894 }
3895
3896
3897 int wpas_init_ext_pw(struct wpa_supplicant *wpa_s)
3898 {
3899         char *val, *pos;
3900
3901         ext_password_deinit(wpa_s->ext_pw);
3902         wpa_s->ext_pw = NULL;
3903         eapol_sm_set_ext_pw_ctx(wpa_s->eapol, NULL);
3904
3905         if (!wpa_s->conf->ext_password_backend)
3906                 return 0;
3907
3908         val = os_strdup(wpa_s->conf->ext_password_backend);
3909         if (val == NULL)
3910                 return -1;
3911         pos = os_strchr(val, ':');
3912         if (pos)
3913                 *pos++ = '\0';
3914
3915         wpa_printf(MSG_DEBUG, "EXT PW: Initialize backend '%s'", val);
3916
3917         wpa_s->ext_pw = ext_password_init(val, pos);
3918         os_free(val);
3919         if (wpa_s->ext_pw == NULL) {
3920                 wpa_printf(MSG_DEBUG, "EXT PW: Failed to initialize backend");
3921                 return -1;
3922         }
3923         eapol_sm_set_ext_pw_ctx(wpa_s->eapol, wpa_s->ext_pw);
3924
3925         return 0;
3926 }
3927
3928
3929 #ifdef CONFIG_FST
3930
3931 static const u8 * wpas_fst_get_bssid_cb(void *ctx)
3932 {
3933         struct wpa_supplicant *wpa_s = ctx;
3934
3935         return (is_zero_ether_addr(wpa_s->bssid) ||
3936                 wpa_s->wpa_state != WPA_COMPLETED) ? NULL : wpa_s->bssid;
3937 }
3938
3939
3940 static void wpas_fst_get_channel_info_cb(void *ctx,
3941                                          enum hostapd_hw_mode *hw_mode,
3942                                          u8 *channel)
3943 {
3944         struct wpa_supplicant *wpa_s = ctx;
3945
3946         if (wpa_s->current_bss) {
3947                 *hw_mode = ieee80211_freq_to_chan(wpa_s->current_bss->freq,
3948                                                   channel);
3949         } else if (wpa_s->hw.num_modes) {
3950                 *hw_mode = wpa_s->hw.modes[0].mode;
3951         } else {
3952                 WPA_ASSERT(0);
3953                 *hw_mode = 0;
3954         }
3955 }
3956
3957
3958 static int wpas_fst_get_hw_modes(void *ctx, struct hostapd_hw_modes **modes)
3959 {
3960         struct wpa_supplicant *wpa_s = ctx;
3961
3962         *modes = wpa_s->hw.modes;
3963         return wpa_s->hw.num_modes;
3964 }
3965
3966
3967 static void wpas_fst_set_ies_cb(void *ctx, const struct wpabuf *fst_ies)
3968 {
3969         struct wpa_supplicant *wpa_s = ctx;
3970
3971         wpa_hexdump_buf(MSG_DEBUG, "FST: Set IEs", fst_ies);
3972         wpa_s->fst_ies = fst_ies;
3973 }
3974
3975
3976 static int wpas_fst_send_action_cb(void *ctx, const u8 *da, struct wpabuf *data)
3977 {
3978         struct wpa_supplicant *wpa_s = ctx;
3979
3980         WPA_ASSERT(os_memcmp(wpa_s->bssid, da, ETH_ALEN) == 0);
3981         return wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
3982                                           wpa_s->own_addr, wpa_s->bssid,
3983                                           wpabuf_head(data), wpabuf_len(data),
3984                                    0);
3985 }
3986
3987
3988 static const struct wpabuf * wpas_fst_get_mb_ie_cb(void *ctx, const u8 *addr)
3989 {
3990         struct wpa_supplicant *wpa_s = ctx;
3991
3992         WPA_ASSERT(os_memcmp(wpa_s->bssid, addr, ETH_ALEN) == 0);
3993         return wpa_s->received_mb_ies;
3994 }
3995
3996
3997 static void wpas_fst_update_mb_ie_cb(void *ctx, const u8 *addr,
3998                                      const u8 *buf, size_t size)
3999 {
4000         struct wpa_supplicant *wpa_s = ctx;
4001         struct mb_ies_info info;
4002
4003         WPA_ASSERT(os_memcmp(wpa_s->bssid, addr, ETH_ALEN) == 0);
4004
4005         if (!mb_ies_info_by_ies(&info, buf, size)) {
4006                 wpabuf_free(wpa_s->received_mb_ies);
4007                 wpa_s->received_mb_ies = mb_ies_by_info(&info);
4008         }
4009 }
4010
4011
4012 const u8 * wpas_fst_get_peer_first(void *ctx, struct fst_get_peer_ctx **get_ctx,
4013                                    Boolean mb_only)
4014 {
4015         struct wpa_supplicant *wpa_s = ctx;
4016
4017         *get_ctx = NULL;
4018         if (!is_zero_ether_addr(wpa_s->bssid))
4019                 return (wpa_s->received_mb_ies || !mb_only) ?
4020                         wpa_s->bssid : NULL;
4021         return NULL;
4022 }
4023
4024
4025 const u8 * wpas_fst_get_peer_next(void *ctx, struct fst_get_peer_ctx **get_ctx,
4026                                   Boolean mb_only)
4027 {
4028         return NULL;
4029 }
4030
4031 void fst_wpa_supplicant_fill_iface_obj(struct wpa_supplicant *wpa_s,
4032                                        struct fst_wpa_obj *iface_obj)
4033 {
4034         iface_obj->ctx              = wpa_s;
4035         iface_obj->get_bssid        = wpas_fst_get_bssid_cb;
4036         iface_obj->get_channel_info = wpas_fst_get_channel_info_cb;
4037         iface_obj->get_hw_modes     = wpas_fst_get_hw_modes;
4038         iface_obj->set_ies          = wpas_fst_set_ies_cb;
4039         iface_obj->send_action      = wpas_fst_send_action_cb;
4040         iface_obj->get_mb_ie        = wpas_fst_get_mb_ie_cb;
4041         iface_obj->update_mb_ie     = wpas_fst_update_mb_ie_cb;
4042         iface_obj->get_peer_first   = wpas_fst_get_peer_first;
4043         iface_obj->get_peer_next    = wpas_fst_get_peer_next;
4044 }
4045 #endif /* CONFIG_FST */
4046
4047 static int wpas_set_wowlan_triggers(struct wpa_supplicant *wpa_s,
4048                                     const struct wpa_driver_capa *capa)
4049 {
4050         struct wowlan_triggers *triggers;
4051         int ret = 0;
4052
4053         if (!wpa_s->conf->wowlan_triggers)
4054                 return 0;
4055
4056         triggers = wpa_get_wowlan_triggers(wpa_s->conf->wowlan_triggers, capa);
4057         if (triggers) {
4058                 ret = wpa_drv_wowlan(wpa_s, triggers);
4059                 os_free(triggers);
4060         }
4061         return ret;
4062 }
4063
4064
4065 enum wpa_radio_work_band wpas_freq_to_band(int freq)
4066 {
4067         if (freq < 3000)
4068                 return BAND_2_4_GHZ;
4069         if (freq > 50000)
4070                 return BAND_60_GHZ;
4071         return BAND_5_GHZ;
4072 }
4073
4074
4075 unsigned int wpas_get_bands(struct wpa_supplicant *wpa_s, const int *freqs)
4076 {
4077         int i;
4078         unsigned int band = 0;
4079
4080         if (freqs) {
4081                 /* freqs are specified for the radio work */
4082                 for (i = 0; freqs[i]; i++)
4083                         band |= wpas_freq_to_band(freqs[i]);
4084         } else {
4085                 /*
4086                  * freqs are not specified, implies all
4087                  * the supported freqs by HW
4088                  */
4089                 for (i = 0; i < wpa_s->hw.num_modes; i++) {
4090                         if (wpa_s->hw.modes[i].num_channels != 0) {
4091                                 if (wpa_s->hw.modes[i].mode ==
4092                                     HOSTAPD_MODE_IEEE80211B ||
4093                                     wpa_s->hw.modes[i].mode ==
4094                                     HOSTAPD_MODE_IEEE80211G)
4095                                         band |= BAND_2_4_GHZ;
4096                                 else if (wpa_s->hw.modes[i].mode ==
4097                                          HOSTAPD_MODE_IEEE80211A)
4098                                         band |= BAND_5_GHZ;
4099                                 else if (wpa_s->hw.modes[i].mode ==
4100                                          HOSTAPD_MODE_IEEE80211AD)
4101                                         band |= BAND_60_GHZ;
4102                                 else if (wpa_s->hw.modes[i].mode ==
4103                                          HOSTAPD_MODE_IEEE80211ANY)
4104                                         band = BAND_2_4_GHZ | BAND_5_GHZ |
4105                                                 BAND_60_GHZ;
4106                         }
4107                 }
4108         }
4109
4110         return band;
4111 }
4112
4113
4114 static struct wpa_radio * radio_add_interface(struct wpa_supplicant *wpa_s,
4115                                               const char *rn)
4116 {
4117         struct wpa_supplicant *iface = wpa_s->global->ifaces;
4118         struct wpa_radio *radio;
4119
4120         while (rn && iface) {
4121                 radio = iface->radio;
4122                 if (radio && os_strcmp(rn, radio->name) == 0) {
4123                         wpa_printf(MSG_DEBUG, "Add interface %s to existing radio %s",
4124                                    wpa_s->ifname, rn);
4125                         dl_list_add(&radio->ifaces, &wpa_s->radio_list);
4126                         return radio;
4127                 }
4128
4129                 iface = iface->next;
4130         }
4131
4132         wpa_printf(MSG_DEBUG, "Add interface %s to a new radio %s",
4133                    wpa_s->ifname, rn ? rn : "N/A");
4134         radio = os_zalloc(sizeof(*radio));
4135         if (radio == NULL)
4136                 return NULL;
4137
4138         if (rn)
4139                 os_strlcpy(radio->name, rn, sizeof(radio->name));
4140         dl_list_init(&radio->ifaces);
4141         dl_list_init(&radio->work);
4142         dl_list_add(&radio->ifaces, &wpa_s->radio_list);
4143
4144         return radio;
4145 }
4146
4147
4148 static void radio_work_free(struct wpa_radio_work *work)
4149 {
4150         if (work->wpa_s->scan_work == work) {
4151                 /* This should not really happen. */
4152                 wpa_dbg(work->wpa_s, MSG_INFO, "Freeing radio work '%s'@%p (started=%d) that is marked as scan_work",
4153                         work->type, work, work->started);
4154                 work->wpa_s->scan_work = NULL;
4155         }
4156
4157 #ifdef CONFIG_P2P
4158         if (work->wpa_s->p2p_scan_work == work) {
4159                 /* This should not really happen. */
4160                 wpa_dbg(work->wpa_s, MSG_INFO, "Freeing radio work '%s'@%p (started=%d) that is marked as p2p_scan_work",
4161                         work->type, work, work->started);
4162                 work->wpa_s->p2p_scan_work = NULL;
4163         }
4164 #endif /* CONFIG_P2P */
4165
4166         if (work->started) {
4167                 work->wpa_s->radio->num_active_works--;
4168                 wpa_dbg(work->wpa_s, MSG_DEBUG,
4169                         "radio_work_free('%s'@%p: num_active_works --> %u",
4170                         work->type, work,
4171                         work->wpa_s->radio->num_active_works);
4172         }
4173
4174         dl_list_del(&work->list);
4175         os_free(work);
4176 }
4177
4178
4179 static struct wpa_radio_work * radio_work_get_next_work(struct wpa_radio *radio)
4180 {
4181         struct wpa_radio_work *active_work = NULL;
4182         struct wpa_radio_work *tmp;
4183
4184         /* Get the active work to know the type and band. */
4185         dl_list_for_each(tmp, &radio->work, struct wpa_radio_work, list) {
4186                 if (tmp->started) {
4187                         active_work = tmp;
4188                         break;
4189                 }
4190         }
4191
4192         if (!active_work) {
4193                 /* No active work, start one */
4194                 radio->num_active_works = 0;
4195                 dl_list_for_each(tmp, &radio->work, struct wpa_radio_work,
4196                                  list) {
4197                         if (os_strcmp(tmp->type, "scan") == 0 &&
4198                             radio->external_scan_running &&
4199                             (((struct wpa_driver_scan_params *)
4200                               tmp->ctx)->only_new_results ||
4201                              tmp->wpa_s->clear_driver_scan_cache))
4202                                 continue;
4203                         return tmp;
4204                 }
4205                 return NULL;
4206         }
4207
4208         if (os_strcmp(active_work->type, "sme-connect") == 0 ||
4209             os_strcmp(active_work->type, "connect") == 0) {
4210                 /*
4211                  * If the active work is either connect or sme-connect,
4212                  * do not parallelize them with other radio works.
4213                  */
4214                 wpa_dbg(active_work->wpa_s, MSG_DEBUG,
4215                         "Do not parallelize radio work with %s",
4216                         active_work->type);
4217                 return NULL;
4218         }
4219
4220         dl_list_for_each(tmp, &radio->work, struct wpa_radio_work, list) {
4221                 if (tmp->started)
4222                         continue;
4223
4224                 /*
4225                  * If connect or sme-connect are enqueued, parallelize only
4226                  * those operations ahead of them in the queue.
4227                  */
4228                 if (os_strcmp(tmp->type, "connect") == 0 ||
4229                     os_strcmp(tmp->type, "sme-connect") == 0)
4230                         break;
4231
4232                 /*
4233                  * Check that the radio works are distinct and
4234                  * on different bands.
4235                  */
4236                 if (os_strcmp(active_work->type, tmp->type) != 0 &&
4237                     (active_work->bands != tmp->bands)) {
4238                         /*
4239                          * If a scan has to be scheduled through nl80211 scan
4240                          * interface and if an external scan is already running,
4241                          * do not schedule the scan since it is likely to get
4242                          * rejected by kernel.
4243                          */
4244                         if (os_strcmp(tmp->type, "scan") == 0 &&
4245                             radio->external_scan_running &&
4246                             (((struct wpa_driver_scan_params *)
4247                               tmp->ctx)->only_new_results ||
4248                              tmp->wpa_s->clear_driver_scan_cache))
4249                                 continue;
4250
4251                         wpa_dbg(active_work->wpa_s, MSG_DEBUG,
4252                                 "active_work:%s new_work:%s",
4253                                 active_work->type, tmp->type);
4254                         return tmp;
4255                 }
4256         }
4257
4258         /* Did not find a radio work to schedule in parallel. */
4259         return NULL;
4260 }
4261
4262
4263 static void radio_start_next_work(void *eloop_ctx, void *timeout_ctx)
4264 {
4265         struct wpa_radio *radio = eloop_ctx;
4266         struct wpa_radio_work *work;
4267         struct os_reltime now, diff;
4268         struct wpa_supplicant *wpa_s;
4269
4270         work = dl_list_first(&radio->work, struct wpa_radio_work, list);
4271         if (work == NULL) {
4272                 radio->num_active_works = 0;
4273                 return;
4274         }
4275
4276         wpa_s = dl_list_first(&radio->ifaces, struct wpa_supplicant,
4277                               radio_list);
4278
4279         if (!(wpa_s &&
4280               wpa_s->drv_flags & WPA_DRIVER_FLAGS_OFFCHANNEL_SIMULTANEOUS)) {
4281                 if (work->started)
4282                         return; /* already started and still in progress */
4283
4284                 if (wpa_s && wpa_s->radio->external_scan_running) {
4285                         wpa_printf(MSG_DEBUG, "Delay radio work start until externally triggered scan completes");
4286                         return;
4287                 }
4288         } else {
4289                 work = NULL;
4290                 if (radio->num_active_works < MAX_ACTIVE_WORKS) {
4291                         /* get the work to schedule next */
4292                         work = radio_work_get_next_work(radio);
4293                 }
4294                 if (!work)
4295                         return;
4296         }
4297
4298         wpa_s = work->wpa_s;
4299         os_get_reltime(&now);
4300         os_reltime_sub(&now, &work->time, &diff);
4301         wpa_dbg(wpa_s, MSG_DEBUG,
4302                 "Starting radio work '%s'@%p after %ld.%06ld second wait",
4303                 work->type, work, diff.sec, diff.usec);
4304         work->started = 1;
4305         work->time = now;
4306         radio->num_active_works++;
4307
4308         work->cb(work, 0);
4309
4310         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_OFFCHANNEL_SIMULTANEOUS) &&
4311             radio->num_active_works < MAX_ACTIVE_WORKS)
4312                 radio_work_check_next(wpa_s);
4313 }
4314
4315
4316 /*
4317  * This function removes both started and pending radio works running on
4318  * the provided interface's radio.
4319  * Prior to the removal of the radio work, its callback (cb) is called with
4320  * deinit set to be 1. Each work's callback is responsible for clearing its
4321  * internal data and restoring to a correct state.
4322  * @wpa_s: wpa_supplicant data
4323  * @type: type of works to be removed
4324  * @remove_all: 1 to remove all the works on this radio, 0 to remove only
4325  * this interface's works.
4326  */
4327 void radio_remove_works(struct wpa_supplicant *wpa_s,
4328                         const char *type, int remove_all)
4329 {
4330         struct wpa_radio_work *work, *tmp;
4331         struct wpa_radio *radio = wpa_s->radio;
4332
4333         dl_list_for_each_safe(work, tmp, &radio->work, struct wpa_radio_work,
4334                               list) {
4335                 if (type && os_strcmp(type, work->type) != 0)
4336                         continue;
4337
4338                 /* skip other ifaces' works */
4339                 if (!remove_all && work->wpa_s != wpa_s)
4340                         continue;
4341
4342                 wpa_dbg(wpa_s, MSG_DEBUG, "Remove radio work '%s'@%p%s",
4343                         work->type, work, work->started ? " (started)" : "");
4344                 work->cb(work, 1);
4345                 radio_work_free(work);
4346         }
4347
4348         /* in case we removed the started work */
4349         radio_work_check_next(wpa_s);
4350 }
4351
4352
4353 static void radio_remove_interface(struct wpa_supplicant *wpa_s)
4354 {
4355         struct wpa_radio *radio = wpa_s->radio;
4356
4357         if (!radio)
4358                 return;
4359
4360         wpa_printf(MSG_DEBUG, "Remove interface %s from radio %s",
4361                    wpa_s->ifname, radio->name);
4362         dl_list_del(&wpa_s->radio_list);
4363         radio_remove_works(wpa_s, NULL, 0);
4364         wpa_s->radio = NULL;
4365         if (!dl_list_empty(&radio->ifaces))
4366                 return; /* Interfaces remain for this radio */
4367
4368         wpa_printf(MSG_DEBUG, "Remove radio %s", radio->name);
4369         eloop_cancel_timeout(radio_start_next_work, radio, NULL);
4370         os_free(radio);
4371 }
4372
4373
4374 void radio_work_check_next(struct wpa_supplicant *wpa_s)
4375 {
4376         struct wpa_radio *radio = wpa_s->radio;
4377
4378         if (dl_list_empty(&radio->work))
4379                 return;
4380         if (wpa_s->ext_work_in_progress) {
4381                 wpa_printf(MSG_DEBUG,
4382                            "External radio work in progress - delay start of pending item");
4383                 return;
4384         }
4385         eloop_cancel_timeout(radio_start_next_work, radio, NULL);
4386         eloop_register_timeout(0, 0, radio_start_next_work, radio, NULL);
4387 }
4388
4389
4390 /**
4391  * radio_add_work - Add a radio work item
4392  * @wpa_s: Pointer to wpa_supplicant data
4393  * @freq: Frequency of the offchannel operation in MHz or 0
4394  * @type: Unique identifier for each type of work
4395  * @next: Force as the next work to be executed
4396  * @cb: Callback function for indicating when radio is available
4397  * @ctx: Context pointer for the work (work->ctx in cb())
4398  * Returns: 0 on success, -1 on failure
4399  *
4400  * This function is used to request time for an operation that requires
4401  * exclusive radio control. Once the radio is available, the registered callback
4402  * function will be called. radio_work_done() must be called once the exclusive
4403  * radio operation has been completed, so that the radio is freed for other
4404  * operations. The special case of deinit=1 is used to free the context data
4405  * during interface removal. That does not allow the callback function to start
4406  * the radio operation, i.e., it must free any resources allocated for the radio
4407  * work and return.
4408  *
4409  * The @freq parameter can be used to indicate a single channel on which the
4410  * offchannel operation will occur. This may allow multiple radio work
4411  * operations to be performed in parallel if they apply for the same channel.
4412  * Setting this to 0 indicates that the work item may use multiple channels or
4413  * requires exclusive control of the radio.
4414  */
4415 int radio_add_work(struct wpa_supplicant *wpa_s, unsigned int freq,
4416                    const char *type, int next,
4417                    void (*cb)(struct wpa_radio_work *work, int deinit),
4418                    void *ctx)
4419 {
4420         struct wpa_radio *radio = wpa_s->radio;
4421         struct wpa_radio_work *work;
4422         int was_empty;
4423
4424         work = os_zalloc(sizeof(*work));
4425         if (work == NULL)
4426                 return -1;
4427         wpa_dbg(wpa_s, MSG_DEBUG, "Add radio work '%s'@%p", type, work);
4428         os_get_reltime(&work->time);
4429         work->freq = freq;
4430         work->type = type;
4431         work->wpa_s = wpa_s;
4432         work->cb = cb;
4433         work->ctx = ctx;
4434
4435         if (freq)
4436                 work->bands = wpas_freq_to_band(freq);
4437         else if (os_strcmp(type, "scan") == 0 ||
4438                  os_strcmp(type, "p2p-scan") == 0)
4439                 work->bands = wpas_get_bands(wpa_s,
4440                                              ((struct wpa_driver_scan_params *)
4441                                               ctx)->freqs);
4442         else
4443                 work->bands = wpas_get_bands(wpa_s, NULL);
4444
4445         was_empty = dl_list_empty(&wpa_s->radio->work);
4446         if (next)
4447                 dl_list_add(&wpa_s->radio->work, &work->list);
4448         else
4449                 dl_list_add_tail(&wpa_s->radio->work, &work->list);
4450         if (was_empty) {
4451                 wpa_dbg(wpa_s, MSG_DEBUG, "First radio work item in the queue - schedule start immediately");
4452                 radio_work_check_next(wpa_s);
4453         } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_OFFCHANNEL_SIMULTANEOUS)
4454                    && radio->num_active_works < MAX_ACTIVE_WORKS) {
4455                 wpa_dbg(wpa_s, MSG_DEBUG,
4456                         "Try to schedule a radio work (num_active_works=%u)",
4457                         radio->num_active_works);
4458                 radio_work_check_next(wpa_s);
4459         }
4460
4461         return 0;
4462 }
4463
4464
4465 /**
4466  * radio_work_done - Indicate that a radio work item has been completed
4467  * @work: Completed work
4468  *
4469  * This function is called once the callback function registered with
4470  * radio_add_work() has completed its work.
4471  */
4472 void radio_work_done(struct wpa_radio_work *work)
4473 {
4474         struct wpa_supplicant *wpa_s = work->wpa_s;
4475         struct os_reltime now, diff;
4476         unsigned int started = work->started;
4477
4478         os_get_reltime(&now);
4479         os_reltime_sub(&now, &work->time, &diff);
4480         wpa_dbg(wpa_s, MSG_DEBUG, "Radio work '%s'@%p %s in %ld.%06ld seconds",
4481                 work->type, work, started ? "done" : "canceled",
4482                 diff.sec, diff.usec);
4483         radio_work_free(work);
4484         if (started)
4485                 radio_work_check_next(wpa_s);
4486 }
4487
4488
4489 struct wpa_radio_work *
4490 radio_work_pending(struct wpa_supplicant *wpa_s, const char *type)
4491 {
4492         struct wpa_radio_work *work;
4493         struct wpa_radio *radio = wpa_s->radio;
4494
4495         dl_list_for_each(work, &radio->work, struct wpa_radio_work, list) {
4496                 if (work->wpa_s == wpa_s && os_strcmp(work->type, type) == 0)
4497                         return work;
4498         }
4499
4500         return NULL;
4501 }
4502
4503
4504 static int wpas_init_driver(struct wpa_supplicant *wpa_s,
4505                             struct wpa_interface *iface)
4506 {
4507         const char *ifname, *driver, *rn;
4508
4509         driver = iface->driver;
4510 next_driver:
4511         if (wpa_supplicant_set_driver(wpa_s, driver) < 0)
4512                 return -1;
4513
4514         wpa_s->drv_priv = wpa_drv_init(wpa_s, wpa_s->ifname);
4515         if (wpa_s->drv_priv == NULL) {
4516                 const char *pos;
4517                 pos = driver ? os_strchr(driver, ',') : NULL;
4518                 if (pos) {
4519                         wpa_dbg(wpa_s, MSG_DEBUG, "Failed to initialize "
4520                                 "driver interface - try next driver wrapper");
4521                         driver = pos + 1;
4522                         goto next_driver;
4523                 }
4524                 wpa_msg(wpa_s, MSG_ERROR, "Failed to initialize driver "
4525                         "interface");
4526                 return -1;
4527         }
4528         if (wpa_drv_set_param(wpa_s, wpa_s->conf->driver_param) < 0) {
4529                 wpa_msg(wpa_s, MSG_ERROR, "Driver interface rejected "
4530                         "driver_param '%s'", wpa_s->conf->driver_param);
4531                 return -1;
4532         }
4533
4534         ifname = wpa_drv_get_ifname(wpa_s);
4535         if (ifname && os_strcmp(ifname, wpa_s->ifname) != 0) {
4536                 wpa_dbg(wpa_s, MSG_DEBUG, "Driver interface replaced "
4537                         "interface name with '%s'", ifname);
4538                 os_strlcpy(wpa_s->ifname, ifname, sizeof(wpa_s->ifname));
4539         }
4540
4541         rn = wpa_driver_get_radio_name(wpa_s);
4542         if (rn && rn[0] == '\0')
4543                 rn = NULL;
4544
4545         wpa_s->radio = radio_add_interface(wpa_s, rn);
4546         if (wpa_s->radio == NULL)
4547                 return -1;
4548
4549         return 0;
4550 }
4551
4552
4553 static int wpa_supplicant_init_iface(struct wpa_supplicant *wpa_s,
4554                                      struct wpa_interface *iface)
4555 {
4556         struct wpa_driver_capa capa;
4557         int capa_res;
4558
4559         wpa_printf(MSG_DEBUG, "Initializing interface '%s' conf '%s' driver "
4560                    "'%s' ctrl_interface '%s' bridge '%s'", iface->ifname,
4561                    iface->confname ? iface->confname : "N/A",
4562                    iface->driver ? iface->driver : "default",
4563                    iface->ctrl_interface ? iface->ctrl_interface : "N/A",
4564                    iface->bridge_ifname ? iface->bridge_ifname : "N/A");
4565
4566         if (iface->confname) {
4567 #ifdef CONFIG_BACKEND_FILE
4568                 wpa_s->confname = os_rel2abs_path(iface->confname);
4569                 if (wpa_s->confname == NULL) {
4570                         wpa_printf(MSG_ERROR, "Failed to get absolute path "
4571                                    "for configuration file '%s'.",
4572                                    iface->confname);
4573                         return -1;
4574                 }
4575                 wpa_printf(MSG_DEBUG, "Configuration file '%s' -> '%s'",
4576                            iface->confname, wpa_s->confname);
4577 #else /* CONFIG_BACKEND_FILE */
4578                 wpa_s->confname = os_strdup(iface->confname);
4579 #endif /* CONFIG_BACKEND_FILE */
4580                 wpa_s->conf = wpa_config_read(wpa_s->confname, NULL);
4581                 if (wpa_s->conf == NULL) {
4582                         wpa_printf(MSG_ERROR, "Failed to read or parse "
4583                                    "configuration '%s'.", wpa_s->confname);
4584                         return -1;
4585                 }
4586                 wpa_s->confanother = os_rel2abs_path(iface->confanother);
4587                 wpa_config_read(wpa_s->confanother, wpa_s->conf);
4588
4589                 /*
4590                  * Override ctrl_interface and driver_param if set on command
4591                  * line.
4592                  */
4593                 if (iface->ctrl_interface) {
4594                         os_free(wpa_s->conf->ctrl_interface);
4595                         wpa_s->conf->ctrl_interface =
4596                                 os_strdup(iface->ctrl_interface);
4597                 }
4598
4599                 if (iface->driver_param) {
4600                         os_free(wpa_s->conf->driver_param);
4601                         wpa_s->conf->driver_param =
4602                                 os_strdup(iface->driver_param);
4603                 }
4604
4605                 if (iface->p2p_mgmt && !iface->ctrl_interface) {
4606                         os_free(wpa_s->conf->ctrl_interface);
4607                         wpa_s->conf->ctrl_interface = NULL;
4608                 }
4609         } else
4610                 wpa_s->conf = wpa_config_alloc_empty(iface->ctrl_interface,
4611                                                      iface->driver_param);
4612
4613         if (wpa_s->conf == NULL) {
4614                 wpa_printf(MSG_ERROR, "\nNo configuration found.");
4615                 return -1;
4616         }
4617
4618         if (iface->ifname == NULL) {
4619                 wpa_printf(MSG_ERROR, "\nInterface name is required.");
4620                 return -1;
4621         }
4622         if (os_strlen(iface->ifname) >= sizeof(wpa_s->ifname)) {
4623                 wpa_printf(MSG_ERROR, "\nToo long interface name '%s'.",
4624                            iface->ifname);
4625                 return -1;
4626         }
4627         os_strlcpy(wpa_s->ifname, iface->ifname, sizeof(wpa_s->ifname));
4628
4629         if (iface->bridge_ifname) {
4630                 if (os_strlen(iface->bridge_ifname) >=
4631                     sizeof(wpa_s->bridge_ifname)) {
4632                         wpa_printf(MSG_ERROR, "\nToo long bridge interface "
4633                                    "name '%s'.", iface->bridge_ifname);
4634                         return -1;
4635                 }
4636                 os_strlcpy(wpa_s->bridge_ifname, iface->bridge_ifname,
4637                            sizeof(wpa_s->bridge_ifname));
4638         }
4639
4640         /* RSNA Supplicant Key Management - INITIALIZE */
4641         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
4642         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
4643
4644         /* Initialize driver interface and register driver event handler before
4645          * L2 receive handler so that association events are processed before
4646          * EAPOL-Key packets if both become available for the same select()
4647          * call. */
4648         if (wpas_init_driver(wpa_s, iface) < 0)
4649                 return -1;
4650
4651         if (wpa_supplicant_init_wpa(wpa_s) < 0)
4652                 return -1;
4653
4654         wpa_sm_set_ifname(wpa_s->wpa, wpa_s->ifname,
4655                           wpa_s->bridge_ifname[0] ? wpa_s->bridge_ifname :
4656                           NULL);
4657         wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth);
4658
4659         if (wpa_s->conf->dot11RSNAConfigPMKLifetime &&
4660             wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_LIFETIME,
4661                              wpa_s->conf->dot11RSNAConfigPMKLifetime)) {
4662                 wpa_msg(wpa_s, MSG_ERROR, "Invalid WPA parameter value for "
4663                         "dot11RSNAConfigPMKLifetime");
4664                 return -1;
4665         }
4666
4667         if (wpa_s->conf->dot11RSNAConfigPMKReauthThreshold &&
4668             wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_REAUTH_THRESHOLD,
4669                              wpa_s->conf->dot11RSNAConfigPMKReauthThreshold)) {
4670                 wpa_msg(wpa_s, MSG_ERROR, "Invalid WPA parameter value for "
4671                         "dot11RSNAConfigPMKReauthThreshold");
4672                 return -1;
4673         }
4674
4675         if (wpa_s->conf->dot11RSNAConfigSATimeout &&
4676             wpa_sm_set_param(wpa_s->wpa, RSNA_SA_TIMEOUT,
4677                              wpa_s->conf->dot11RSNAConfigSATimeout)) {
4678                 wpa_msg(wpa_s, MSG_ERROR, "Invalid WPA parameter value for "
4679                         "dot11RSNAConfigSATimeout");
4680                 return -1;
4681         }
4682
4683         wpa_s->hw.modes = wpa_drv_get_hw_feature_data(wpa_s,
4684                                                       &wpa_s->hw.num_modes,
4685                                                       &wpa_s->hw.flags);
4686         if (wpa_s->hw.modes) {
4687                 u16 i;
4688
4689                 for (i = 0; i < wpa_s->hw.num_modes; i++) {
4690                         if (wpa_s->hw.modes[i].vht_capab) {
4691                                 wpa_s->hw_capab = CAPAB_VHT;
4692                                 break;
4693                         }
4694
4695                         if (wpa_s->hw.modes[i].ht_capab &
4696                             HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)
4697                                 wpa_s->hw_capab = CAPAB_HT40;
4698                         else if (wpa_s->hw.modes[i].ht_capab &&
4699                                  wpa_s->hw_capab == CAPAB_NO_HT_VHT)
4700                                 wpa_s->hw_capab = CAPAB_HT;
4701                 }
4702         }
4703
4704         capa_res = wpa_drv_get_capa(wpa_s, &capa);
4705         if (capa_res == 0) {
4706                 wpa_s->drv_capa_known = 1;
4707                 wpa_s->drv_flags = capa.flags;
4708                 wpa_s->drv_enc = capa.enc;
4709                 wpa_s->drv_smps_modes = capa.smps_modes;
4710                 wpa_s->drv_rrm_flags = capa.rrm_flags;
4711                 wpa_s->probe_resp_offloads = capa.probe_resp_offloads;
4712                 wpa_s->max_scan_ssids = capa.max_scan_ssids;
4713                 wpa_s->max_sched_scan_ssids = capa.max_sched_scan_ssids;
4714                 wpa_s->max_sched_scan_plans = capa.max_sched_scan_plans;
4715                 wpa_s->max_sched_scan_plan_interval =
4716                         capa.max_sched_scan_plan_interval;
4717                 wpa_s->max_sched_scan_plan_iterations =
4718                         capa.max_sched_scan_plan_iterations;
4719                 wpa_s->sched_scan_supported = capa.sched_scan_supported;
4720                 wpa_s->max_match_sets = capa.max_match_sets;
4721                 wpa_s->max_remain_on_chan = capa.max_remain_on_chan;
4722                 wpa_s->max_stations = capa.max_stations;
4723                 wpa_s->extended_capa = capa.extended_capa;
4724                 wpa_s->extended_capa_mask = capa.extended_capa_mask;
4725                 wpa_s->extended_capa_len = capa.extended_capa_len;
4726                 wpa_s->num_multichan_concurrent =
4727                         capa.num_multichan_concurrent;
4728                 wpa_s->wmm_ac_supported = capa.wmm_ac_supported;
4729
4730                 if (capa.mac_addr_rand_scan_supported)
4731                         wpa_s->mac_addr_rand_supported |= MAC_ADDR_RAND_SCAN;
4732                 if (wpa_s->sched_scan_supported &&
4733                     capa.mac_addr_rand_sched_scan_supported)
4734                         wpa_s->mac_addr_rand_supported |=
4735                                 (MAC_ADDR_RAND_SCHED_SCAN | MAC_ADDR_RAND_PNO);
4736         }
4737         if (wpa_s->max_remain_on_chan == 0)
4738                 wpa_s->max_remain_on_chan = 1000;
4739
4740         /*
4741          * Only take p2p_mgmt parameters when P2P Device is supported.
4742          * Doing it here as it determines whether l2_packet_init() will be done
4743          * during wpa_supplicant_driver_init().
4744          */
4745         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)
4746                 wpa_s->p2p_mgmt = iface->p2p_mgmt;
4747         else
4748                 iface->p2p_mgmt = 1;
4749
4750         if (wpa_s->num_multichan_concurrent == 0)
4751                 wpa_s->num_multichan_concurrent = 1;
4752
4753         if (wpa_supplicant_driver_init(wpa_s) < 0)
4754                 return -1;
4755
4756 #ifdef CONFIG_TDLS
4757         if ((!iface->p2p_mgmt ||
4758              !(wpa_s->drv_flags &
4759                WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)) &&
4760             wpa_tdls_init(wpa_s->wpa))
4761                 return -1;
4762 #endif /* CONFIG_TDLS */
4763
4764         if (wpa_s->conf->country[0] && wpa_s->conf->country[1] &&
4765             wpa_drv_set_country(wpa_s, wpa_s->conf->country)) {
4766                 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to set country");
4767                 return -1;
4768         }
4769
4770 #ifdef CONFIG_FST
4771         if (wpa_s->conf->fst_group_id) {
4772                 struct fst_iface_cfg cfg;
4773                 struct fst_wpa_obj iface_obj;
4774
4775                 fst_wpa_supplicant_fill_iface_obj(wpa_s, &iface_obj);
4776                 os_strlcpy(cfg.group_id, wpa_s->conf->fst_group_id,
4777                            sizeof(cfg.group_id));
4778                 cfg.priority = wpa_s->conf->fst_priority;
4779                 cfg.llt = wpa_s->conf->fst_llt;
4780
4781                 wpa_s->fst = fst_attach(wpa_s->ifname, wpa_s->own_addr,
4782                                         &iface_obj, &cfg);
4783                 if (!wpa_s->fst) {
4784                         wpa_msg(wpa_s, MSG_ERROR,
4785                                 "FST: Cannot attach iface %s to group %s",
4786                                 wpa_s->ifname, cfg.group_id);
4787                         return -1;
4788                 }
4789         }
4790 #endif /* CONFIG_FST */
4791
4792         if (wpas_wps_init(wpa_s))
4793                 return -1;
4794
4795         if (wpa_supplicant_init_eapol(wpa_s) < 0)
4796                 return -1;
4797         wpa_sm_set_eapol(wpa_s->wpa, wpa_s->eapol);
4798
4799         wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s);
4800         if (wpa_s->ctrl_iface == NULL) {
4801                 wpa_printf(MSG_ERROR,
4802                            "Failed to initialize control interface '%s'.\n"
4803                            "You may have another wpa_supplicant process "
4804                            "already running or the file was\n"
4805                            "left by an unclean termination of wpa_supplicant "
4806                            "in which case you will need\n"
4807                            "to manually remove this file before starting "
4808                            "wpa_supplicant again.\n",
4809                            wpa_s->conf->ctrl_interface);
4810                 return -1;
4811         }
4812
4813         wpa_s->gas = gas_query_init(wpa_s);
4814         if (wpa_s->gas == NULL) {
4815                 wpa_printf(MSG_ERROR, "Failed to initialize GAS query");
4816                 return -1;
4817         }
4818
4819         if (iface->p2p_mgmt && wpas_p2p_init(wpa_s->global, wpa_s) < 0) {
4820                 wpa_msg(wpa_s, MSG_ERROR, "Failed to init P2P");
4821                 return -1;
4822         }
4823
4824         if (wpa_bss_init(wpa_s) < 0)
4825                 return -1;
4826
4827         /*
4828          * Set Wake-on-WLAN triggers, if configured.
4829          * Note: We don't restore/remove the triggers on shutdown (it doesn't
4830          * have effect anyway when the interface is down).
4831          */
4832         if (capa_res == 0 && wpas_set_wowlan_triggers(wpa_s, &capa) < 0)
4833                 return -1;
4834
4835 #ifdef CONFIG_EAP_PROXY
4836 {
4837         size_t len;
4838         wpa_s->mnc_len = eapol_sm_get_eap_proxy_imsi(wpa_s->eapol, wpa_s->imsi,
4839                                                      &len);
4840         if (wpa_s->mnc_len > 0) {
4841                 wpa_s->imsi[len] = '\0';
4842                 wpa_printf(MSG_DEBUG, "eap_proxy: IMSI %s (MNC length %d)",
4843                            wpa_s->imsi, wpa_s->mnc_len);
4844         } else {
4845                 wpa_printf(MSG_DEBUG, "eap_proxy: IMSI not available");
4846         }
4847 }
4848 #endif /* CONFIG_EAP_PROXY */
4849
4850         if (pcsc_reader_init(wpa_s) < 0)
4851                 return -1;
4852
4853         if (wpas_init_ext_pw(wpa_s) < 0)
4854                 return -1;
4855
4856         wpas_rrm_reset(wpa_s);
4857
4858         wpas_sched_scan_plans_set(wpa_s, wpa_s->conf->sched_scan_plans);
4859
4860 #ifdef CONFIG_HS20
4861         hs20_init(wpa_s);
4862 #endif /* CONFIG_HS20 */
4863 #ifdef CONFIG_MBO
4864         wpas_mbo_update_non_pref_chan(wpa_s, wpa_s->conf->non_pref_chan);
4865 #endif /* CONFIG_MBO */
4866
4867         return 0;
4868 }
4869
4870
4871 static void wpa_supplicant_deinit_iface(struct wpa_supplicant *wpa_s,
4872                                         int notify, int terminate)
4873 {
4874         struct wpa_global *global = wpa_s->global;
4875         struct wpa_supplicant *iface, *prev;
4876
4877         if (wpa_s == wpa_s->parent)
4878                 wpas_p2p_group_remove(wpa_s, "*");
4879
4880         iface = global->ifaces;
4881         while (iface) {
4882                 if (iface->p2pdev == wpa_s)
4883                         iface->p2pdev = iface->parent;
4884                 if (iface == wpa_s || iface->parent != wpa_s) {
4885                         iface = iface->next;
4886                         continue;
4887                 }
4888                 wpa_printf(MSG_DEBUG,
4889                            "Remove remaining child interface %s from parent %s",
4890                            iface->ifname, wpa_s->ifname);
4891                 prev = iface;
4892                 iface = iface->next;
4893                 wpa_supplicant_remove_iface(global, prev, terminate);
4894         }
4895
4896         wpa_s->disconnected = 1;
4897         if (wpa_s->drv_priv) {
4898                 wpa_supplicant_deauthenticate(wpa_s,
4899                                               WLAN_REASON_DEAUTH_LEAVING);
4900
4901                 wpa_drv_set_countermeasures(wpa_s, 0);
4902                 wpa_clear_keys(wpa_s, NULL);
4903         }
4904
4905         wpa_supplicant_cleanup(wpa_s);
4906         wpas_p2p_deinit_iface(wpa_s);
4907
4908         wpas_ctrl_radio_work_flush(wpa_s);
4909         radio_remove_interface(wpa_s);
4910
4911 #ifdef CONFIG_FST
4912         if (wpa_s->fst) {
4913                 fst_detach(wpa_s->fst);
4914                 wpa_s->fst = NULL;
4915         }
4916         if (wpa_s->received_mb_ies) {
4917                 wpabuf_free(wpa_s->received_mb_ies);
4918                 wpa_s->received_mb_ies = NULL;
4919         }
4920 #endif /* CONFIG_FST */
4921
4922         if (wpa_s->drv_priv)
4923                 wpa_drv_deinit(wpa_s);
4924
4925         if (notify)
4926                 wpas_notify_iface_removed(wpa_s);
4927
4928         if (terminate)
4929                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_TERMINATING);
4930
4931         if (wpa_s->ctrl_iface) {
4932                 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
4933                 wpa_s->ctrl_iface = NULL;
4934         }
4935
4936 #ifdef CONFIG_MESH
4937         if (wpa_s->ifmsh) {
4938                 wpa_supplicant_mesh_iface_deinit(wpa_s, wpa_s->ifmsh);
4939                 wpa_s->ifmsh = NULL;
4940         }
4941 #endif /* CONFIG_MESH */
4942
4943         if (wpa_s->conf != NULL) {
4944                 wpa_config_free(wpa_s->conf);
4945                 wpa_s->conf = NULL;
4946         }
4947
4948         os_free(wpa_s->ssids_from_scan_req);
4949
4950         os_free(wpa_s);
4951 }
4952
4953
4954 #ifdef CONFIG_MATCH_IFACE
4955
4956 /**
4957  * wpa_supplicant_match_iface - Match an interface description to a name
4958  * @global: Pointer to global data from wpa_supplicant_init()
4959  * @ifname: Name of the interface to match
4960  * Returns: Pointer to the created interface description or %NULL on failure
4961  */
4962 struct wpa_interface * wpa_supplicant_match_iface(struct wpa_global *global,
4963                                                   const char *ifname)
4964 {
4965         int i;
4966         struct wpa_interface *iface, *miface;
4967
4968         for (i = 0; i < global->params.match_iface_count; i++) {
4969                 miface = &global->params.match_ifaces[i];
4970                 if (!miface->ifname ||
4971                     fnmatch(miface->ifname, ifname, 0) == 0) {
4972                         iface = os_zalloc(sizeof(*iface));
4973                         if (!iface)
4974                                 return NULL;
4975                         *iface = *miface;
4976                         iface->ifname = ifname;
4977                         return iface;
4978                 }
4979         }
4980
4981         return NULL;
4982 }
4983
4984
4985 /**
4986  * wpa_supplicant_match_existing - Match existing interfaces
4987  * @global: Pointer to global data from wpa_supplicant_init()
4988  * Returns: 0 on success, -1 on failure
4989  */
4990 static int wpa_supplicant_match_existing(struct wpa_global *global)
4991 {
4992         struct if_nameindex *ifi, *ifp;
4993         struct wpa_supplicant *wpa_s;
4994         struct wpa_interface *iface;
4995
4996         ifp = if_nameindex();
4997         if (!ifp) {
4998                 wpa_printf(MSG_ERROR, "if_nameindex: %s", strerror(errno));
4999                 return -1;
5000         }
5001
5002         for (ifi = ifp; ifi->if_name; ifi++) {
5003                 wpa_s = wpa_supplicant_get_iface(global, ifi->if_name);
5004                 if (wpa_s)
5005                         continue;
5006                 iface = wpa_supplicant_match_iface(global, ifi->if_name);
5007                 if (iface) {
5008                         wpa_s = wpa_supplicant_add_iface(global, iface, NULL);
5009                         os_free(iface);
5010                         if (wpa_s)
5011                                 wpa_s->matched = 1;
5012                 }
5013         }
5014
5015         if_freenameindex(ifp);
5016         return 0;
5017 }
5018
5019 #endif /* CONFIG_MATCH_IFACE */
5020
5021
5022 /**
5023  * wpa_supplicant_add_iface - Add a new network interface
5024  * @global: Pointer to global data from wpa_supplicant_init()
5025  * @iface: Interface configuration options
5026  * @parent: Parent interface or %NULL to assign new interface as parent
5027  * Returns: Pointer to the created interface or %NULL on failure
5028  *
5029  * This function is used to add new network interfaces for %wpa_supplicant.
5030  * This can be called before wpa_supplicant_run() to add interfaces before the
5031  * main event loop has been started. In addition, new interfaces can be added
5032  * dynamically while %wpa_supplicant is already running. This could happen,
5033  * e.g., when a hotplug network adapter is inserted.
5034  */
5035 struct wpa_supplicant * wpa_supplicant_add_iface(struct wpa_global *global,
5036                                                  struct wpa_interface *iface,
5037                                                  struct wpa_supplicant *parent)
5038 {
5039         struct wpa_supplicant *wpa_s;
5040         struct wpa_interface t_iface;
5041         struct wpa_ssid *ssid;
5042
5043         if (global == NULL || iface == NULL)
5044                 return NULL;
5045
5046         wpa_s = wpa_supplicant_alloc(parent);
5047         if (wpa_s == NULL)
5048                 return NULL;
5049
5050         wpa_s->global = global;
5051
5052         t_iface = *iface;
5053         if (global->params.override_driver) {
5054                 wpa_printf(MSG_DEBUG, "Override interface parameter: driver "
5055                            "('%s' -> '%s')",
5056                            iface->driver, global->params.override_driver);
5057                 t_iface.driver = global->params.override_driver;
5058         }
5059         if (global->params.override_ctrl_interface) {
5060                 wpa_printf(MSG_DEBUG, "Override interface parameter: "
5061                            "ctrl_interface ('%s' -> '%s')",
5062                            iface->ctrl_interface,
5063                            global->params.override_ctrl_interface);
5064                 t_iface.ctrl_interface =
5065                         global->params.override_ctrl_interface;
5066         }
5067         if (wpa_supplicant_init_iface(wpa_s, &t_iface)) {
5068                 wpa_printf(MSG_DEBUG, "Failed to add interface %s",
5069                            iface->ifname);
5070                 wpa_supplicant_deinit_iface(wpa_s, 0, 0);
5071                 return NULL;
5072         }
5073
5074         if (iface->p2p_mgmt == 0) {
5075                 /* Notify the control interfaces about new iface */
5076                 if (wpas_notify_iface_added(wpa_s)) {
5077                         wpa_supplicant_deinit_iface(wpa_s, 1, 0);
5078                         return NULL;
5079                 }
5080
5081                 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next)
5082                         wpas_notify_network_added(wpa_s, ssid);
5083         }
5084
5085         wpa_s->next = global->ifaces;
5086         global->ifaces = wpa_s;
5087
5088         wpa_dbg(wpa_s, MSG_DEBUG, "Added interface %s", wpa_s->ifname);
5089         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
5090
5091 #ifdef CONFIG_P2P
5092         if (wpa_s->global->p2p == NULL &&
5093             !wpa_s->global->p2p_disabled && !wpa_s->conf->p2p_disabled &&
5094             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
5095             wpas_p2p_add_p2pdev_interface(
5096                     wpa_s, wpa_s->global->params.conf_p2p_dev) < 0) {
5097                 wpa_printf(MSG_INFO,
5098                            "P2P: Failed to enable P2P Device interface");
5099                 /* Try to continue without. P2P will be disabled. */
5100         }
5101 #endif /* CONFIG_P2P */
5102
5103         return wpa_s;
5104 }
5105
5106
5107 /**
5108  * wpa_supplicant_remove_iface - Remove a network interface
5109  * @global: Pointer to global data from wpa_supplicant_init()
5110  * @wpa_s: Pointer to the network interface to be removed
5111  * Returns: 0 if interface was removed, -1 if interface was not found
5112  *
5113  * This function can be used to dynamically remove network interfaces from
5114  * %wpa_supplicant, e.g., when a hotplug network adapter is ejected. In
5115  * addition, this function is used to remove all remaining interfaces when
5116  * %wpa_supplicant is terminated.
5117  */
5118 int wpa_supplicant_remove_iface(struct wpa_global *global,
5119                                 struct wpa_supplicant *wpa_s,
5120                                 int terminate)
5121 {
5122         struct wpa_supplicant *prev;
5123 #ifdef CONFIG_MESH
5124         unsigned int mesh_if_created = wpa_s->mesh_if_created;
5125         char *ifname = NULL;
5126 #endif /* CONFIG_MESH */
5127
5128         /* Remove interface from the global list of interfaces */
5129         prev = global->ifaces;
5130         if (prev == wpa_s) {
5131                 global->ifaces = wpa_s->next;
5132         } else {
5133                 while (prev && prev->next != wpa_s)
5134                         prev = prev->next;
5135                 if (prev == NULL)
5136                         return -1;
5137                 prev->next = wpa_s->next;
5138         }
5139
5140         wpa_dbg(wpa_s, MSG_DEBUG, "Removing interface %s", wpa_s->ifname);
5141
5142 #ifdef CONFIG_MESH
5143         if (mesh_if_created) {
5144                 ifname = os_strdup(wpa_s->ifname);
5145                 if (ifname == NULL) {
5146                         wpa_dbg(wpa_s, MSG_ERROR,
5147                                 "mesh: Failed to malloc ifname");
5148                         return -1;
5149                 }
5150         }
5151 #endif /* CONFIG_MESH */
5152
5153         if (global->p2p_group_formation == wpa_s)
5154                 global->p2p_group_formation = NULL;
5155         if (global->p2p_invite_group == wpa_s)
5156                 global->p2p_invite_group = NULL;
5157         wpa_supplicant_deinit_iface(wpa_s, 1, terminate);
5158
5159 #ifdef CONFIG_MESH
5160         if (mesh_if_created) {
5161                 wpa_drv_if_remove(global->ifaces, WPA_IF_MESH, ifname);
5162                 os_free(ifname);
5163         }
5164 #endif /* CONFIG_MESH */
5165
5166         return 0;
5167 }
5168
5169
5170 /**
5171  * wpa_supplicant_get_eap_mode - Get the current EAP mode
5172  * @wpa_s: Pointer to the network interface
5173  * Returns: Pointer to the eap mode or the string "UNKNOWN" if not found
5174  */
5175 const char * wpa_supplicant_get_eap_mode(struct wpa_supplicant *wpa_s)
5176 {
5177         const char *eapol_method;
5178
5179         if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) == 0 &&
5180             wpa_s->key_mgmt != WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
5181                 return "NO-EAP";
5182         }
5183
5184         eapol_method = eapol_sm_get_method_name(wpa_s->eapol);
5185         if (eapol_method == NULL)
5186                 return "UNKNOWN-EAP";
5187
5188         return eapol_method;
5189 }
5190
5191
5192 /**
5193  * wpa_supplicant_get_iface - Get a new network interface
5194  * @global: Pointer to global data from wpa_supplicant_init()
5195  * @ifname: Interface name
5196  * Returns: Pointer to the interface or %NULL if not found
5197  */
5198 struct wpa_supplicant * wpa_supplicant_get_iface(struct wpa_global *global,
5199                                                  const char *ifname)
5200 {
5201         struct wpa_supplicant *wpa_s;
5202
5203         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5204                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5205                         return wpa_s;
5206         }
5207         return NULL;
5208 }
5209
5210
5211 #ifndef CONFIG_NO_WPA_MSG
5212 static const char * wpa_supplicant_msg_ifname_cb(void *ctx)
5213 {
5214         struct wpa_supplicant *wpa_s = ctx;
5215         if (wpa_s == NULL)
5216                 return NULL;
5217         return wpa_s->ifname;
5218 }
5219 #endif /* CONFIG_NO_WPA_MSG */
5220
5221
5222 #ifndef WPA_SUPPLICANT_CLEANUP_INTERVAL
5223 #define WPA_SUPPLICANT_CLEANUP_INTERVAL 10
5224 #endif /* WPA_SUPPLICANT_CLEANUP_INTERVAL */
5225
5226 /* Periodic cleanup tasks */
5227 static void wpas_periodic(void *eloop_ctx, void *timeout_ctx)
5228 {
5229         struct wpa_global *global = eloop_ctx;
5230         struct wpa_supplicant *wpa_s;
5231
5232         eloop_register_timeout(WPA_SUPPLICANT_CLEANUP_INTERVAL, 0,
5233                                wpas_periodic, global, NULL);
5234
5235 #ifdef CONFIG_P2P
5236         if (global->p2p)
5237                 p2p_expire_peers(global->p2p);
5238 #endif /* CONFIG_P2P */
5239
5240         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5241                 wpa_bss_flush_by_age(wpa_s, wpa_s->conf->bss_expiration_age);
5242 #ifdef CONFIG_AP
5243                 ap_periodic(wpa_s);
5244 #endif /* CONFIG_AP */
5245         }
5246 }
5247
5248
5249 /**
5250  * wpa_supplicant_init - Initialize %wpa_supplicant
5251  * @params: Parameters for %wpa_supplicant
5252  * Returns: Pointer to global %wpa_supplicant data, or %NULL on failure
5253  *
5254  * This function is used to initialize %wpa_supplicant. After successful
5255  * initialization, the returned data pointer can be used to add and remove
5256  * network interfaces, and eventually, to deinitialize %wpa_supplicant.
5257  */
5258 struct wpa_global * wpa_supplicant_init(struct wpa_params *params)
5259 {
5260         struct wpa_global *global;
5261         int ret, i;
5262
5263         if (params == NULL)
5264                 return NULL;
5265
5266 #ifdef CONFIG_DRIVER_NDIS
5267         {
5268                 void driver_ndis_init_ops(void);
5269                 driver_ndis_init_ops();
5270         }
5271 #endif /* CONFIG_DRIVER_NDIS */
5272
5273 #ifndef CONFIG_NO_WPA_MSG
5274         wpa_msg_register_ifname_cb(wpa_supplicant_msg_ifname_cb);
5275 #endif /* CONFIG_NO_WPA_MSG */
5276
5277         if (params->wpa_debug_file_path)
5278                 wpa_debug_open_file(params->wpa_debug_file_path);
5279         else
5280                 wpa_debug_setup_stdout();
5281         if (params->wpa_debug_syslog)
5282                 wpa_debug_open_syslog();
5283         if (params->wpa_debug_tracing) {
5284                 ret = wpa_debug_open_linux_tracing();
5285                 if (ret) {
5286                         wpa_printf(MSG_ERROR,
5287                                    "Failed to enable trace logging");
5288                         return NULL;
5289                 }
5290         }
5291
5292         ret = eap_register_methods();
5293         if (ret) {
5294                 wpa_printf(MSG_ERROR, "Failed to register EAP methods");
5295                 if (ret == -2)
5296                         wpa_printf(MSG_ERROR, "Two or more EAP methods used "
5297                                    "the same EAP type.");
5298                 return NULL;
5299         }
5300
5301         global = os_zalloc(sizeof(*global));
5302         if (global == NULL)
5303                 return NULL;
5304         dl_list_init(&global->p2p_srv_bonjour);
5305         dl_list_init(&global->p2p_srv_upnp);
5306         global->params.daemonize = params->daemonize;
5307         global->params.wait_for_monitor = params->wait_for_monitor;
5308         global->params.dbus_ctrl_interface = params->dbus_ctrl_interface;
5309         if (params->pid_file)
5310                 global->params.pid_file = os_strdup(params->pid_file);
5311         if (params->ctrl_interface)
5312                 global->params.ctrl_interface =
5313                         os_strdup(params->ctrl_interface);
5314         if (params->ctrl_interface_group)
5315                 global->params.ctrl_interface_group =
5316                         os_strdup(params->ctrl_interface_group);
5317         if (params->override_driver)
5318                 global->params.override_driver =
5319                         os_strdup(params->override_driver);
5320         if (params->override_ctrl_interface)
5321                 global->params.override_ctrl_interface =
5322                         os_strdup(params->override_ctrl_interface);
5323 #ifdef CONFIG_MATCH_IFACE
5324         global->params.match_iface_count = params->match_iface_count;
5325         if (params->match_iface_count) {
5326                 global->params.match_ifaces =
5327                         os_calloc(params->match_iface_count,
5328                                   sizeof(struct wpa_interface));
5329                 os_memcpy(global->params.match_ifaces,
5330                           params->match_ifaces,
5331                           params->match_iface_count *
5332                           sizeof(struct wpa_interface));
5333         }
5334 #endif /* CONFIG_MATCH_IFACE */
5335 #ifdef CONFIG_P2P
5336         if (params->conf_p2p_dev)
5337                 global->params.conf_p2p_dev =
5338                         os_strdup(params->conf_p2p_dev);
5339 #endif /* CONFIG_P2P */
5340         wpa_debug_level = global->params.wpa_debug_level =
5341                 params->wpa_debug_level;
5342         wpa_debug_show_keys = global->params.wpa_debug_show_keys =
5343                 params->wpa_debug_show_keys;
5344         wpa_debug_timestamp = global->params.wpa_debug_timestamp =
5345                 params->wpa_debug_timestamp;
5346
5347         wpa_printf(MSG_DEBUG, "wpa_supplicant v" VERSION_STR);
5348
5349         if (eloop_init()) {
5350                 wpa_printf(MSG_ERROR, "Failed to initialize event loop");
5351                 wpa_supplicant_deinit(global);
5352                 return NULL;
5353         }
5354
5355         random_init(params->entropy_file);
5356
5357         global->ctrl_iface = wpa_supplicant_global_ctrl_iface_init(global);
5358         if (global->ctrl_iface == NULL) {
5359                 wpa_supplicant_deinit(global);
5360                 return NULL;
5361         }
5362
5363         if (wpas_notify_supplicant_initialized(global)) {
5364                 wpa_supplicant_deinit(global);
5365                 return NULL;
5366         }
5367
5368         for (i = 0; wpa_drivers[i]; i++)
5369                 global->drv_count++;
5370         if (global->drv_count == 0) {
5371                 wpa_printf(MSG_ERROR, "No drivers enabled");
5372                 wpa_supplicant_deinit(global);
5373                 return NULL;
5374         }
5375         global->drv_priv = os_calloc(global->drv_count, sizeof(void *));
5376         if (global->drv_priv == NULL) {
5377                 wpa_supplicant_deinit(global);
5378                 return NULL;
5379         }
5380
5381 #ifdef CONFIG_WIFI_DISPLAY
5382         if (wifi_display_init(global) < 0) {
5383                 wpa_printf(MSG_ERROR, "Failed to initialize Wi-Fi Display");
5384                 wpa_supplicant_deinit(global);
5385                 return NULL;
5386         }
5387 #endif /* CONFIG_WIFI_DISPLAY */
5388
5389         eloop_register_timeout(WPA_SUPPLICANT_CLEANUP_INTERVAL, 0,
5390                                wpas_periodic, global, NULL);
5391
5392         return global;
5393 }
5394
5395
5396 /**
5397  * wpa_supplicant_run - Run the %wpa_supplicant main event loop
5398  * @global: Pointer to global data from wpa_supplicant_init()
5399  * Returns: 0 after successful event loop run, -1 on failure
5400  *
5401  * This function starts the main event loop and continues running as long as
5402  * there are any remaining events. In most cases, this function is running as
5403  * long as the %wpa_supplicant process in still in use.
5404  */
5405 int wpa_supplicant_run(struct wpa_global *global)
5406 {
5407         struct wpa_supplicant *wpa_s;
5408
5409         if (global->params.daemonize &&
5410             (wpa_supplicant_daemon(global->params.pid_file) ||
5411              eloop_sock_requeue()))
5412                 return -1;
5413
5414 #ifdef CONFIG_MATCH_IFACE
5415         if (wpa_supplicant_match_existing(global))
5416                 return -1;
5417 #endif
5418
5419         if (global->params.wait_for_monitor) {
5420                 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next)
5421                         if (wpa_s->ctrl_iface && !wpa_s->p2p_mgmt)
5422                                 wpa_supplicant_ctrl_iface_wait(
5423                                         wpa_s->ctrl_iface);
5424         }
5425
5426         eloop_register_signal_terminate(wpa_supplicant_terminate, global);
5427         eloop_register_signal_reconfig(wpa_supplicant_reconfig, global);
5428
5429         eloop_run();
5430
5431         return 0;
5432 }
5433
5434
5435 /**
5436  * wpa_supplicant_deinit - Deinitialize %wpa_supplicant
5437  * @global: Pointer to global data from wpa_supplicant_init()
5438  *
5439  * This function is called to deinitialize %wpa_supplicant and to free all
5440  * allocated resources. Remaining network interfaces will also be removed.
5441  */
5442 void wpa_supplicant_deinit(struct wpa_global *global)
5443 {
5444         int i;
5445
5446         if (global == NULL)
5447                 return;
5448
5449         eloop_cancel_timeout(wpas_periodic, global, NULL);
5450
5451 #ifdef CONFIG_WIFI_DISPLAY
5452         wifi_display_deinit(global);
5453 #endif /* CONFIG_WIFI_DISPLAY */
5454
5455         while (global->ifaces)
5456                 wpa_supplicant_remove_iface(global, global->ifaces, 1);
5457
5458         if (global->ctrl_iface)
5459                 wpa_supplicant_global_ctrl_iface_deinit(global->ctrl_iface);
5460
5461         wpas_notify_supplicant_deinitialized(global);
5462
5463         eap_peer_unregister_methods();
5464 #ifdef CONFIG_AP
5465         eap_server_unregister_methods();
5466 #endif /* CONFIG_AP */
5467
5468         for (i = 0; wpa_drivers[i] && global->drv_priv; i++) {
5469                 if (!global->drv_priv[i])
5470                         continue;
5471                 wpa_drivers[i]->global_deinit(global->drv_priv[i]);
5472         }
5473         os_free(global->drv_priv);
5474
5475         random_deinit();
5476
5477         eloop_destroy();
5478
5479         if (global->params.pid_file) {
5480                 os_daemonize_terminate(global->params.pid_file);
5481                 os_free(global->params.pid_file);
5482         }
5483         os_free(global->params.ctrl_interface);
5484         os_free(global->params.ctrl_interface_group);
5485         os_free(global->params.override_driver);
5486         os_free(global->params.override_ctrl_interface);
5487 #ifdef CONFIG_MATCH_IFACE
5488         os_free(global->params.match_ifaces);
5489 #endif /* CONFIG_MATCH_IFACE */
5490 #ifdef CONFIG_P2P
5491         os_free(global->params.conf_p2p_dev);
5492 #endif /* CONFIG_P2P */
5493
5494         os_free(global->p2p_disallow_freq.range);
5495         os_free(global->p2p_go_avoid_freq.range);
5496         os_free(global->add_psk);
5497
5498         os_free(global);
5499         wpa_debug_close_syslog();
5500         wpa_debug_close_file();
5501         wpa_debug_close_linux_tracing();
5502 }
5503
5504
5505 void wpa_supplicant_update_config(struct wpa_supplicant *wpa_s)
5506 {
5507         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
5508             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
5509                 char country[3];
5510                 country[0] = wpa_s->conf->country[0];
5511                 country[1] = wpa_s->conf->country[1];
5512                 country[2] = '\0';
5513                 if (wpa_drv_set_country(wpa_s, country) < 0) {
5514                         wpa_printf(MSG_ERROR, "Failed to set country code "
5515                                    "'%s'", country);
5516                 }
5517         }
5518
5519         if (wpa_s->conf->changed_parameters & CFG_CHANGED_EXT_PW_BACKEND)
5520                 wpas_init_ext_pw(wpa_s);
5521
5522         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SCHED_SCAN_PLANS)
5523                 wpas_sched_scan_plans_set(wpa_s, wpa_s->conf->sched_scan_plans);
5524
5525 #ifdef CONFIG_WPS
5526         wpas_wps_update_config(wpa_s);
5527 #endif /* CONFIG_WPS */
5528         wpas_p2p_update_config(wpa_s);
5529         wpa_s->conf->changed_parameters = 0;
5530 }
5531
5532
5533 void add_freq(int *freqs, int *num_freqs, int freq)
5534 {
5535         int i;
5536
5537         for (i = 0; i < *num_freqs; i++) {
5538                 if (freqs[i] == freq)
5539                         return;
5540         }
5541
5542         freqs[*num_freqs] = freq;
5543         (*num_freqs)++;
5544 }
5545
5546
5547 static int * get_bss_freqs_in_ess(struct wpa_supplicant *wpa_s)
5548 {
5549         struct wpa_bss *bss, *cbss;
5550         const int max_freqs = 10;
5551         int *freqs;
5552         int num_freqs = 0;
5553
5554         freqs = os_calloc(max_freqs + 1, sizeof(int));
5555         if (freqs == NULL)
5556                 return NULL;
5557
5558         cbss = wpa_s->current_bss;
5559
5560         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
5561                 if (bss == cbss)
5562                         continue;
5563                 if (bss->ssid_len == cbss->ssid_len &&
5564                     os_memcmp(bss->ssid, cbss->ssid, bss->ssid_len) == 0 &&
5565                     wpa_blacklist_get(wpa_s, bss->bssid) == NULL) {
5566                         add_freq(freqs, &num_freqs, bss->freq);
5567                         if (num_freqs == max_freqs)
5568                                 break;
5569                 }
5570         }
5571
5572         if (num_freqs == 0) {
5573                 os_free(freqs);
5574                 freqs = NULL;
5575         }
5576
5577         return freqs;
5578 }
5579
5580
5581 void wpas_connection_failed(struct wpa_supplicant *wpa_s, const u8 *bssid)
5582 {
5583         int timeout;
5584         int count;
5585         int *freqs = NULL;
5586
5587         wpas_connect_work_done(wpa_s);
5588
5589         /*
5590          * Remove possible authentication timeout since the connection failed.
5591          */
5592         eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
5593
5594         /*
5595          * There is no point in blacklisting the AP if this event is
5596          * generated based on local request to disconnect.
5597          */
5598         if (wpa_s->own_disconnect_req) {
5599                 wpa_s->own_disconnect_req = 0;
5600                 wpa_dbg(wpa_s, MSG_DEBUG,
5601                         "Ignore connection failure due to local request to disconnect");
5602                 return;
5603         }
5604         if (wpa_s->disconnected) {
5605                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore connection failure "
5606                         "indication since interface has been put into "
5607                         "disconnected state");
5608                 return;
5609         }
5610
5611         /*
5612          * Add the failed BSSID into the blacklist and speed up next scan
5613          * attempt if there could be other APs that could accept association.
5614          * The current blacklist count indicates how many times we have tried
5615          * connecting to this AP and multiple attempts mean that other APs are
5616          * either not available or has already been tried, so that we can start
5617          * increasing the delay here to avoid constant scanning.
5618          */
5619         count = wpa_blacklist_add(wpa_s, bssid);
5620         if (count == 1 && wpa_s->current_bss) {
5621                 /*
5622                  * This BSS was not in the blacklist before. If there is
5623                  * another BSS available for the same ESS, we should try that
5624                  * next. Otherwise, we may as well try this one once more
5625                  * before allowing other, likely worse, ESSes to be considered.
5626                  */
5627                 freqs = get_bss_freqs_in_ess(wpa_s);
5628                 if (freqs) {
5629                         wpa_dbg(wpa_s, MSG_DEBUG, "Another BSS in this ESS "
5630                                 "has been seen; try it next");
5631                         wpa_blacklist_add(wpa_s, bssid);
5632                         /*
5633                          * On the next scan, go through only the known channels
5634                          * used in this ESS based on previous scans to speed up
5635                          * common load balancing use case.
5636                          */
5637                         os_free(wpa_s->next_scan_freqs);
5638                         wpa_s->next_scan_freqs = freqs;
5639                 }
5640         }
5641
5642         /*
5643          * Add previous failure count in case the temporary blacklist was
5644          * cleared due to no other BSSes being available.
5645          */
5646         count += wpa_s->extra_blacklist_count;
5647
5648         if (count > 3 && wpa_s->current_ssid) {
5649                 wpa_printf(MSG_DEBUG, "Continuous association failures - "
5650                            "consider temporary network disabling");
5651                 wpas_auth_failed(wpa_s, "CONN_FAILED");
5652         }
5653
5654         switch (count) {
5655         case 1:
5656                 timeout = 100;
5657                 break;
5658         case 2:
5659                 timeout = 500;
5660                 break;
5661         case 3:
5662                 timeout = 1000;
5663                 break;
5664         case 4:
5665                 timeout = 5000;
5666                 break;
5667         default:
5668                 timeout = 10000;
5669                 break;
5670         }
5671
5672         wpa_dbg(wpa_s, MSG_DEBUG, "Blacklist count %d --> request scan in %d "
5673                 "ms", count, timeout);
5674
5675         /*
5676          * TODO: if more than one possible AP is available in scan results,
5677          * could try the other ones before requesting a new scan.
5678          */
5679         wpa_supplicant_req_scan(wpa_s, timeout / 1000,
5680                                 1000 * (timeout % 1000));
5681 }
5682
5683
5684 int wpas_driver_bss_selection(struct wpa_supplicant *wpa_s)
5685 {
5686         return wpa_s->conf->ap_scan == 2 ||
5687                 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION);
5688 }
5689
5690
5691 #if defined(CONFIG_CTRL_IFACE) || defined(CONFIG_CTRL_IFACE_DBUS_NEW)
5692 int wpa_supplicant_ctrl_iface_ctrl_rsp_handle(struct wpa_supplicant *wpa_s,
5693                                               struct wpa_ssid *ssid,
5694                                               const char *field,
5695                                               const char *value)
5696 {
5697 #ifdef IEEE8021X_EAPOL
5698         struct eap_peer_config *eap = &ssid->eap;
5699
5700         wpa_printf(MSG_DEBUG, "CTRL_IFACE: response handle field=%s", field);
5701         wpa_hexdump_ascii_key(MSG_DEBUG, "CTRL_IFACE: response value",
5702                               (const u8 *) value, os_strlen(value));
5703
5704         switch (wpa_supplicant_ctrl_req_from_string(field)) {
5705         case WPA_CTRL_REQ_EAP_IDENTITY:
5706                 os_free(eap->identity);
5707                 eap->identity = (u8 *) os_strdup(value);
5708                 eap->identity_len = os_strlen(value);
5709                 eap->pending_req_identity = 0;
5710                 if (ssid == wpa_s->current_ssid)
5711                         wpa_s->reassociate = 1;
5712                 break;
5713         case WPA_CTRL_REQ_EAP_PASSWORD:
5714                 bin_clear_free(eap->password, eap->password_len);
5715                 eap->password = (u8 *) os_strdup(value);
5716                 eap->password_len = os_strlen(value);
5717                 eap->pending_req_password = 0;
5718                 if (ssid == wpa_s->current_ssid)
5719                         wpa_s->reassociate = 1;
5720                 break;
5721         case WPA_CTRL_REQ_EAP_NEW_PASSWORD:
5722                 bin_clear_free(eap->new_password, eap->new_password_len);
5723                 eap->new_password = (u8 *) os_strdup(value);
5724                 eap->new_password_len = os_strlen(value);
5725                 eap->pending_req_new_password = 0;
5726                 if (ssid == wpa_s->current_ssid)
5727                         wpa_s->reassociate = 1;
5728                 break;
5729         case WPA_CTRL_REQ_EAP_PIN:
5730                 str_clear_free(eap->pin);
5731                 eap->pin = os_strdup(value);
5732                 eap->pending_req_pin = 0;
5733                 if (ssid == wpa_s->current_ssid)
5734                         wpa_s->reassociate = 1;
5735                 break;
5736         case WPA_CTRL_REQ_EAP_OTP:
5737                 bin_clear_free(eap->otp, eap->otp_len);
5738                 eap->otp = (u8 *) os_strdup(value);
5739                 eap->otp_len = os_strlen(value);
5740                 os_free(eap->pending_req_otp);
5741                 eap->pending_req_otp = NULL;
5742                 eap->pending_req_otp_len = 0;
5743                 break;
5744         case WPA_CTRL_REQ_EAP_PASSPHRASE:
5745                 str_clear_free(eap->private_key_passwd);
5746                 eap->private_key_passwd = os_strdup(value);
5747                 eap->pending_req_passphrase = 0;
5748                 if (ssid == wpa_s->current_ssid)
5749                         wpa_s->reassociate = 1;
5750                 break;
5751         case WPA_CTRL_REQ_SIM:
5752                 str_clear_free(eap->external_sim_resp);
5753                 eap->external_sim_resp = os_strdup(value);
5754                 break;
5755         case WPA_CTRL_REQ_PSK_PASSPHRASE:
5756                 if (wpa_config_set(ssid, "psk", value, 0) < 0)
5757                         return -1;
5758                 ssid->mem_only_psk = 1;
5759                 if (ssid->passphrase)
5760                         wpa_config_update_psk(ssid);
5761                 if (wpa_s->wpa_state == WPA_SCANNING && !wpa_s->scanning)
5762                         wpa_supplicant_req_scan(wpa_s, 0, 0);
5763                 break;
5764         case WPA_CTRL_REQ_EXT_CERT_CHECK:
5765                 if (eap->pending_ext_cert_check != PENDING_CHECK)
5766                         return -1;
5767                 if (os_strcmp(value, "good") == 0)
5768                         eap->pending_ext_cert_check = EXT_CERT_CHECK_GOOD;
5769                 else if (os_strcmp(value, "bad") == 0)
5770                         eap->pending_ext_cert_check = EXT_CERT_CHECK_BAD;
5771                 else
5772                         return -1;
5773                 break;
5774         default:
5775                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Unknown field '%s'", field);
5776                 return -1;
5777         }
5778
5779         return 0;
5780 #else /* IEEE8021X_EAPOL */
5781         wpa_printf(MSG_DEBUG, "CTRL_IFACE: IEEE 802.1X not included");
5782         return -1;
5783 #endif /* IEEE8021X_EAPOL */
5784 }
5785 #endif /* CONFIG_CTRL_IFACE || CONFIG_CTRL_IFACE_DBUS_NEW */
5786
5787
5788 int wpas_network_disabled(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid)
5789 {
5790         int i;
5791         unsigned int drv_enc;
5792
5793         if (wpa_s->p2p_mgmt)
5794                 return 1; /* no normal network profiles on p2p_mgmt interface */
5795
5796         if (ssid == NULL)
5797                 return 1;
5798
5799         if (ssid->disabled)
5800                 return 1;
5801
5802         if (wpa_s->drv_capa_known)
5803                 drv_enc = wpa_s->drv_enc;
5804         else
5805                 drv_enc = (unsigned int) -1;
5806
5807         for (i = 0; i < NUM_WEP_KEYS; i++) {
5808                 size_t len = ssid->wep_key_len[i];
5809                 if (len == 0)
5810                         continue;
5811                 if (len == 5 && (drv_enc & WPA_DRIVER_CAPA_ENC_WEP40))
5812                         continue;
5813                 if (len == 13 && (drv_enc & WPA_DRIVER_CAPA_ENC_WEP104))
5814                         continue;
5815                 if (len == 16 && (drv_enc & WPA_DRIVER_CAPA_ENC_WEP128))
5816                         continue;
5817                 return 1; /* invalid WEP key */
5818         }
5819
5820         if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt) && !ssid->psk_set &&
5821             (!ssid->passphrase || ssid->ssid_len != 0) && !ssid->ext_psk &&
5822             !ssid->mem_only_psk)
5823                 return 1;
5824
5825         return 0;
5826 }
5827
5828
5829 int wpas_get_ssid_pmf(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid)
5830 {
5831 #ifdef CONFIG_IEEE80211W
5832         if (ssid == NULL || ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT) {
5833                 if (wpa_s->conf->pmf == MGMT_FRAME_PROTECTION_OPTIONAL &&
5834                     !(wpa_s->drv_enc & WPA_DRIVER_CAPA_ENC_BIP)) {
5835                         /*
5836                          * Driver does not support BIP -- ignore pmf=1 default
5837                          * since the connection with PMF would fail and the
5838                          * configuration does not require PMF to be enabled.
5839                          */
5840                         return NO_MGMT_FRAME_PROTECTION;
5841                 }
5842
5843                 if (ssid &&
5844                     (ssid->key_mgmt &
5845                      ~(WPA_KEY_MGMT_NONE | WPA_KEY_MGMT_WPS |
5846                        WPA_KEY_MGMT_IEEE8021X_NO_WPA)) == 0) {
5847                         /*
5848                          * Do not use the default PMF value for non-RSN networks
5849                          * since PMF is available only with RSN and pmf=2
5850                          * configuration would otherwise prevent connections to
5851                          * all open networks.
5852                          */
5853                         return NO_MGMT_FRAME_PROTECTION;
5854                 }
5855
5856                 return wpa_s->conf->pmf;
5857         }
5858
5859         return ssid->ieee80211w;
5860 #else /* CONFIG_IEEE80211W */
5861         return NO_MGMT_FRAME_PROTECTION;
5862 #endif /* CONFIG_IEEE80211W */
5863 }
5864
5865
5866 int wpas_is_p2p_prioritized(struct wpa_supplicant *wpa_s)
5867 {
5868         if (wpa_s->global->conc_pref == WPA_CONC_PREF_P2P)
5869                 return 1;
5870         if (wpa_s->global->conc_pref == WPA_CONC_PREF_STA)
5871                 return 0;
5872         return -1;
5873 }
5874
5875
5876 void wpas_auth_failed(struct wpa_supplicant *wpa_s, char *reason)
5877 {
5878         struct wpa_ssid *ssid = wpa_s->current_ssid;
5879         int dur;
5880         struct os_reltime now;
5881
5882         if (ssid == NULL) {
5883                 wpa_printf(MSG_DEBUG, "Authentication failure but no known "
5884                            "SSID block");
5885                 return;
5886         }
5887
5888         if (ssid->key_mgmt == WPA_KEY_MGMT_WPS)
5889                 return;
5890
5891         ssid->auth_failures++;
5892
5893 #ifdef CONFIG_P2P
5894         if (ssid->p2p_group &&
5895             (wpa_s->p2p_in_provisioning || wpa_s->show_group_started)) {
5896                 /*
5897                  * Skip the wait time since there is a short timeout on the
5898                  * connection to a P2P group.
5899                  */
5900                 return;
5901         }
5902 #endif /* CONFIG_P2P */
5903
5904         if (ssid->auth_failures > 50)
5905                 dur = 300;
5906         else if (ssid->auth_failures > 10)
5907                 dur = 120;
5908         else if (ssid->auth_failures > 5)
5909                 dur = 90;
5910         else if (ssid->auth_failures > 3)
5911                 dur = 60;
5912         else if (ssid->auth_failures > 2)
5913                 dur = 30;
5914         else if (ssid->auth_failures > 1)
5915                 dur = 20;
5916         else
5917                 dur = 10;
5918
5919         if (ssid->auth_failures > 1 &&
5920             wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt))
5921                 dur += os_random() % (ssid->auth_failures * 10);
5922
5923         os_get_reltime(&now);
5924         if (now.sec + dur <= ssid->disabled_until.sec)
5925                 return;
5926
5927         ssid->disabled_until.sec = now.sec + dur;
5928
5929         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_TEMP_DISABLED
5930                 "id=%d ssid=\"%s\" auth_failures=%u duration=%d reason=%s",
5931                 ssid->id, wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
5932                 ssid->auth_failures, dur, reason);
5933 }
5934
5935
5936 void wpas_clear_temp_disabled(struct wpa_supplicant *wpa_s,
5937                               struct wpa_ssid *ssid, int clear_failures)
5938 {
5939         if (ssid == NULL)
5940                 return;
5941
5942         if (ssid->disabled_until.sec) {
5943                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_REENABLED
5944                         "id=%d ssid=\"%s\"",
5945                         ssid->id, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
5946         }
5947         ssid->disabled_until.sec = 0;
5948         ssid->disabled_until.usec = 0;
5949         if (clear_failures)
5950                 ssid->auth_failures = 0;
5951 }
5952
5953
5954 int disallowed_bssid(struct wpa_supplicant *wpa_s, const u8 *bssid)
5955 {
5956         size_t i;
5957
5958         if (wpa_s->disallow_aps_bssid == NULL)
5959                 return 0;
5960
5961         for (i = 0; i < wpa_s->disallow_aps_bssid_count; i++) {
5962                 if (os_memcmp(wpa_s->disallow_aps_bssid + i * ETH_ALEN,
5963                               bssid, ETH_ALEN) == 0)
5964                         return 1;
5965         }
5966
5967         return 0;
5968 }
5969
5970
5971 int disallowed_ssid(struct wpa_supplicant *wpa_s, const u8 *ssid,
5972                     size_t ssid_len)
5973 {
5974         size_t i;
5975
5976         if (wpa_s->disallow_aps_ssid == NULL || ssid == NULL)
5977                 return 0;
5978
5979         for (i = 0; i < wpa_s->disallow_aps_ssid_count; i++) {
5980                 struct wpa_ssid_value *s = &wpa_s->disallow_aps_ssid[i];
5981                 if (ssid_len == s->ssid_len &&
5982                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
5983                         return 1;
5984         }
5985
5986         return 0;
5987 }
5988
5989
5990 /**
5991  * wpas_request_connection - Request a new connection
5992  * @wpa_s: Pointer to the network interface
5993  *
5994  * This function is used to request a new connection to be found. It will mark
5995  * the interface to allow reassociation and request a new scan to find a
5996  * suitable network to connect to.
5997  */
5998 void wpas_request_connection(struct wpa_supplicant *wpa_s)
5999 {
6000         wpa_s->normal_scans = 0;
6001         wpa_s->scan_req = NORMAL_SCAN_REQ;
6002         wpa_supplicant_reinit_autoscan(wpa_s);
6003         wpa_s->extra_blacklist_count = 0;
6004         wpa_s->disconnected = 0;
6005         wpa_s->reassociate = 1;
6006
6007         if (wpa_supplicant_fast_associate(wpa_s) != 1)
6008                 wpa_supplicant_req_scan(wpa_s, 0, 0);
6009         else
6010                 wpa_s->reattach = 0;
6011 }
6012
6013
6014 void dump_freq_data(struct wpa_supplicant *wpa_s, const char *title,
6015                     struct wpa_used_freq_data *freqs_data,
6016                     unsigned int len)
6017 {
6018         unsigned int i;
6019
6020         wpa_dbg(wpa_s, MSG_DEBUG, "Shared frequencies (len=%u): %s",
6021                 len, title);
6022         for (i = 0; i < len; i++) {
6023                 struct wpa_used_freq_data *cur = &freqs_data[i];
6024                 wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d, flags=0x%X",
6025                         i, cur->freq, cur->flags);
6026         }
6027 }
6028
6029
6030 /*
6031  * Find the operating frequencies of any of the virtual interfaces that
6032  * are using the same radio as the current interface, and in addition, get
6033  * information about the interface types that are using the frequency.
6034  */
6035 int get_shared_radio_freqs_data(struct wpa_supplicant *wpa_s,
6036                                 struct wpa_used_freq_data *freqs_data,
6037                                 unsigned int len)
6038 {
6039         struct wpa_supplicant *ifs;
6040         u8 bssid[ETH_ALEN];
6041         int freq;
6042         unsigned int idx = 0, i;
6043
6044         wpa_dbg(wpa_s, MSG_DEBUG,
6045                 "Determining shared radio frequencies (max len %u)", len);
6046         os_memset(freqs_data, 0, sizeof(struct wpa_used_freq_data) * len);
6047
6048         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
6049                          radio_list) {
6050                 if (idx == len)
6051                         break;
6052
6053                 if (ifs->current_ssid == NULL || ifs->assoc_freq == 0)
6054                         continue;
6055
6056                 if (ifs->current_ssid->mode == WPAS_MODE_AP ||
6057                     ifs->current_ssid->mode == WPAS_MODE_P2P_GO ||
6058                     ifs->current_ssid->mode == WPAS_MODE_MESH)
6059                         freq = ifs->current_ssid->frequency;
6060                 else if (wpa_drv_get_bssid(ifs, bssid) == 0)
6061                         freq = ifs->assoc_freq;
6062                 else
6063                         continue;
6064
6065                 /* Hold only distinct freqs */
6066                 for (i = 0; i < idx; i++)
6067                         if (freqs_data[i].freq == freq)
6068                                 break;
6069
6070                 if (i == idx)
6071                         freqs_data[idx++].freq = freq;
6072
6073                 if (ifs->current_ssid->mode == WPAS_MODE_INFRA) {
6074                         freqs_data[i].flags |= ifs->current_ssid->p2p_group ?
6075                                 WPA_FREQ_USED_BY_P2P_CLIENT :
6076                                 WPA_FREQ_USED_BY_INFRA_STATION;
6077                 }
6078         }
6079
6080         dump_freq_data(wpa_s, "completed iteration", freqs_data, idx);
6081         return idx;
6082 }
6083
6084
6085 /*
6086  * Find the operating frequencies of any of the virtual interfaces that
6087  * are using the same radio as the current interface.
6088  */
6089 int get_shared_radio_freqs(struct wpa_supplicant *wpa_s,
6090                            int *freq_array, unsigned int len)
6091 {
6092         struct wpa_used_freq_data *freqs_data;
6093         int num, i;
6094
6095         os_memset(freq_array, 0, sizeof(int) * len);
6096
6097         freqs_data = os_calloc(len, sizeof(struct wpa_used_freq_data));
6098         if (!freqs_data)
6099                 return -1;
6100
6101         num = get_shared_radio_freqs_data(wpa_s, freqs_data, len);
6102         for (i = 0; i < num; i++)
6103                 freq_array[i] = freqs_data[i].freq;
6104
6105         os_free(freqs_data);
6106
6107         return num;
6108 }
6109
6110
6111 static void wpas_rrm_neighbor_rep_timeout_handler(void *data, void *user_ctx)
6112 {
6113         struct rrm_data *rrm = data;
6114
6115         if (!rrm->notify_neighbor_rep) {
6116                 wpa_printf(MSG_ERROR,
6117                            "RRM: Unexpected neighbor report timeout");
6118                 return;
6119         }
6120
6121         wpa_printf(MSG_DEBUG, "RRM: Notifying neighbor report - NONE");
6122         rrm->notify_neighbor_rep(rrm->neighbor_rep_cb_ctx, NULL);
6123
6124         rrm->notify_neighbor_rep = NULL;
6125         rrm->neighbor_rep_cb_ctx = NULL;
6126 }
6127
6128
6129 /*
6130  * wpas_rrm_reset - Clear and reset all RRM data in wpa_supplicant
6131  * @wpa_s: Pointer to wpa_supplicant
6132  */
6133 void wpas_rrm_reset(struct wpa_supplicant *wpa_s)
6134 {
6135         wpa_s->rrm.rrm_used = 0;
6136
6137         eloop_cancel_timeout(wpas_rrm_neighbor_rep_timeout_handler, &wpa_s->rrm,
6138                              NULL);
6139         if (wpa_s->rrm.notify_neighbor_rep)
6140                 wpas_rrm_neighbor_rep_timeout_handler(&wpa_s->rrm, NULL);
6141         wpa_s->rrm.next_neighbor_rep_token = 1;
6142 }
6143
6144
6145 /*
6146  * wpas_rrm_process_neighbor_rep - Handle incoming neighbor report
6147  * @wpa_s: Pointer to wpa_supplicant
6148  * @report: Neighbor report buffer, prefixed by a 1-byte dialog token
6149  * @report_len: Length of neighbor report buffer
6150  */
6151 void wpas_rrm_process_neighbor_rep(struct wpa_supplicant *wpa_s,
6152                                    const u8 *report, size_t report_len)
6153 {
6154         struct wpabuf *neighbor_rep;
6155
6156         wpa_hexdump(MSG_DEBUG, "RRM: New Neighbor Report", report, report_len);
6157         if (report_len < 1)
6158                 return;
6159
6160         if (report[0] != wpa_s->rrm.next_neighbor_rep_token - 1) {
6161                 wpa_printf(MSG_DEBUG,
6162                            "RRM: Discarding neighbor report with token %d (expected %d)",
6163                            report[0], wpa_s->rrm.next_neighbor_rep_token - 1);
6164                 return;
6165         }
6166
6167         eloop_cancel_timeout(wpas_rrm_neighbor_rep_timeout_handler, &wpa_s->rrm,
6168                              NULL);
6169
6170         if (!wpa_s->rrm.notify_neighbor_rep) {
6171                 wpa_printf(MSG_ERROR, "RRM: Unexpected neighbor report");
6172                 return;
6173         }
6174
6175         /* skipping the first byte, which is only an id (dialog token) */
6176         neighbor_rep = wpabuf_alloc(report_len - 1);
6177         if (neighbor_rep == NULL)
6178                 return;
6179         wpabuf_put_data(neighbor_rep, report + 1, report_len - 1);
6180         wpa_printf(MSG_DEBUG, "RRM: Notifying neighbor report (token = %d)",
6181                    report[0]);
6182         wpa_s->rrm.notify_neighbor_rep(wpa_s->rrm.neighbor_rep_cb_ctx,
6183                                        neighbor_rep);
6184         wpa_s->rrm.notify_neighbor_rep = NULL;
6185         wpa_s->rrm.neighbor_rep_cb_ctx = NULL;
6186 }
6187
6188
6189 #if defined(__CYGWIN__) || defined(CONFIG_NATIVE_WINDOWS)
6190 /* Workaround different, undefined for Windows, error codes used here */
6191 #define ENOTCONN -1
6192 #define EOPNOTSUPP -1
6193 #define ECANCELED -1
6194 #endif
6195
6196 /* Measurement Request element + Location Subject + Maximum Age subelement */
6197 #define MEASURE_REQUEST_LCI_LEN (3 + 1 + 4)
6198 /* Measurement Request element + Location Civic Request */
6199 #define MEASURE_REQUEST_CIVIC_LEN (3 + 5)
6200
6201
6202 /**
6203  * wpas_rrm_send_neighbor_rep_request - Request a neighbor report from our AP
6204  * @wpa_s: Pointer to wpa_supplicant
6205  * @ssid: if not null, this is sent in the request. Otherwise, no SSID IE
6206  *        is sent in the request.
6207  * @lci: if set, neighbor request will include LCI request
6208  * @civic: if set, neighbor request will include civic location request
6209  * @cb: Callback function to be called once the requested report arrives, or
6210  *      timed out after RRM_NEIGHBOR_REPORT_TIMEOUT seconds.
6211  *      In the former case, 'neighbor_rep' is a newly allocated wpabuf, and it's
6212  *      the requester's responsibility to free it.
6213  *      In the latter case NULL will be sent in 'neighbor_rep'.
6214  * @cb_ctx: Context value to send the callback function
6215  * Returns: 0 in case of success, negative error code otherwise
6216  *
6217  * In case there is a previous request which has not been answered yet, the
6218  * new request fails. The caller may retry after RRM_NEIGHBOR_REPORT_TIMEOUT.
6219  * Request must contain a callback function.
6220  */
6221 int wpas_rrm_send_neighbor_rep_request(struct wpa_supplicant *wpa_s,
6222                                        const struct wpa_ssid_value *ssid,
6223                                        int lci, int civic,
6224                                        void (*cb)(void *ctx,
6225                                                   struct wpabuf *neighbor_rep),
6226                                        void *cb_ctx)
6227 {
6228         struct wpabuf *buf;
6229         const u8 *rrm_ie;
6230
6231         if (wpa_s->wpa_state != WPA_COMPLETED || wpa_s->current_ssid == NULL) {
6232                 wpa_printf(MSG_DEBUG, "RRM: No connection, no RRM.");
6233                 return -ENOTCONN;
6234         }
6235
6236         if (!wpa_s->rrm.rrm_used) {
6237                 wpa_printf(MSG_DEBUG, "RRM: No RRM in current connection.");
6238                 return -EOPNOTSUPP;
6239         }
6240
6241         rrm_ie = wpa_bss_get_ie(wpa_s->current_bss,
6242                                 WLAN_EID_RRM_ENABLED_CAPABILITIES);
6243         if (!rrm_ie || !(wpa_s->current_bss->caps & IEEE80211_CAP_RRM) ||
6244             !(rrm_ie[2] & WLAN_RRM_CAPS_NEIGHBOR_REPORT)) {
6245                 wpa_printf(MSG_DEBUG,
6246                            "RRM: No network support for Neighbor Report.");
6247                 return -EOPNOTSUPP;
6248         }
6249
6250         if (!cb) {
6251                 wpa_printf(MSG_DEBUG,
6252                            "RRM: Neighbor Report request must provide a callback.");
6253                 return -EINVAL;
6254         }
6255
6256         /* Refuse if there's a live request */
6257         if (wpa_s->rrm.notify_neighbor_rep) {
6258                 wpa_printf(MSG_DEBUG,
6259                            "RRM: Currently handling previous Neighbor Report.");
6260                 return -EBUSY;
6261         }
6262
6263         /* 3 = action category + action code + dialog token */
6264         buf = wpabuf_alloc(3 + (ssid ? 2 + ssid->ssid_len : 0) +
6265                            (lci ? 2 + MEASURE_REQUEST_LCI_LEN : 0) +
6266                            (civic ? 2 + MEASURE_REQUEST_CIVIC_LEN : 0));
6267         if (buf == NULL) {
6268                 wpa_printf(MSG_DEBUG,
6269                            "RRM: Failed to allocate Neighbor Report Request");
6270                 return -ENOMEM;
6271         }
6272
6273         wpa_printf(MSG_DEBUG, "RRM: Neighbor report request (for %s), token=%d",
6274                    (ssid ? wpa_ssid_txt(ssid->ssid, ssid->ssid_len) : ""),
6275                    wpa_s->rrm.next_neighbor_rep_token);
6276
6277         wpabuf_put_u8(buf, WLAN_ACTION_RADIO_MEASUREMENT);
6278         wpabuf_put_u8(buf, WLAN_RRM_NEIGHBOR_REPORT_REQUEST);
6279         wpabuf_put_u8(buf, wpa_s->rrm.next_neighbor_rep_token);
6280         if (ssid) {
6281                 wpabuf_put_u8(buf, WLAN_EID_SSID);
6282                 wpabuf_put_u8(buf, ssid->ssid_len);
6283                 wpabuf_put_data(buf, ssid->ssid, ssid->ssid_len);
6284         }
6285
6286         if (lci) {
6287                 /* IEEE P802.11-REVmc/D5.0 9.4.2.21 */
6288                 wpabuf_put_u8(buf, WLAN_EID_MEASURE_REQUEST);
6289                 wpabuf_put_u8(buf, MEASURE_REQUEST_LCI_LEN);
6290
6291                 /*
6292                  * Measurement token; nonzero number that is unique among the
6293                  * Measurement Request elements in a particular frame.
6294                  */
6295                 wpabuf_put_u8(buf, 1); /* Measurement Token */
6296
6297                 /*
6298                  * Parallel, Enable, Request, and Report bits are 0, Duration is
6299                  * reserved.
6300                  */
6301                 wpabuf_put_u8(buf, 0); /* Measurement Request Mode */
6302                 wpabuf_put_u8(buf, MEASURE_TYPE_LCI); /* Measurement Type */
6303
6304                 /* IEEE P802.11-REVmc/D5.0 9.4.2.21.10 - LCI request */
6305                 /* Location Subject */
6306                 wpabuf_put_u8(buf, LOCATION_SUBJECT_REMOTE);
6307
6308                 /* Optional Subelements */
6309                 /*
6310                  * IEEE P802.11-REVmc/D5.0 Figure 9-170
6311                  * The Maximum Age subelement is required, otherwise the AP can
6312                  * send only data that was determined after receiving the
6313                  * request. Setting it here to unlimited age.
6314                  */
6315                 wpabuf_put_u8(buf, LCI_REQ_SUBELEM_MAX_AGE);
6316                 wpabuf_put_u8(buf, 2);
6317                 wpabuf_put_le16(buf, 0xffff);
6318         }
6319
6320         if (civic) {
6321                 /* IEEE P802.11-REVmc/D5.0 9.4.2.21 */
6322                 wpabuf_put_u8(buf, WLAN_EID_MEASURE_REQUEST);
6323                 wpabuf_put_u8(buf, MEASURE_REQUEST_CIVIC_LEN);
6324
6325                 /*
6326                  * Measurement token; nonzero number that is unique among the
6327                  * Measurement Request elements in a particular frame.
6328                  */
6329                 wpabuf_put_u8(buf, 2); /* Measurement Token */
6330
6331                 /*
6332                  * Parallel, Enable, Request, and Report bits are 0, Duration is
6333                  * reserved.
6334                  */
6335                 wpabuf_put_u8(buf, 0); /* Measurement Request Mode */
6336                 /* Measurement Type */
6337                 wpabuf_put_u8(buf, MEASURE_TYPE_LOCATION_CIVIC);
6338
6339                 /* IEEE P802.11-REVmc/D5.0 9.4.2.21.14:
6340                  * Location Civic request */
6341                 /* Location Subject */
6342                 wpabuf_put_u8(buf, LOCATION_SUBJECT_REMOTE);
6343                 wpabuf_put_u8(buf, 0); /* Civic Location Type: IETF RFC 4776 */
6344                 /* Location Service Interval Units: Seconds */
6345                 wpabuf_put_u8(buf, 0);
6346                 /* Location Service Interval: 0 - Only one report is requested
6347                  */
6348                 wpabuf_put_le16(buf, 0);
6349                 /* No optional subelements */
6350         }
6351
6352         wpa_s->rrm.next_neighbor_rep_token++;
6353
6354         if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
6355                                 wpa_s->own_addr, wpa_s->bssid,
6356                                 wpabuf_head(buf), wpabuf_len(buf), 0) < 0) {
6357                 wpa_printf(MSG_DEBUG,
6358                            "RRM: Failed to send Neighbor Report Request");
6359                 wpabuf_free(buf);
6360                 return -ECANCELED;
6361         }
6362
6363         wpa_s->rrm.neighbor_rep_cb_ctx = cb_ctx;
6364         wpa_s->rrm.notify_neighbor_rep = cb;
6365         eloop_register_timeout(RRM_NEIGHBOR_REPORT_TIMEOUT, 0,
6366                                wpas_rrm_neighbor_rep_timeout_handler,
6367                                &wpa_s->rrm, NULL);
6368
6369         wpabuf_free(buf);
6370         return 0;
6371 }
6372
6373
6374 static struct wpabuf * wpas_rrm_build_lci_report(struct wpa_supplicant *wpa_s,
6375                                                  const u8 *request, size_t len,
6376                                                  struct wpabuf *report)
6377 {
6378         u8 token, type, subject;
6379         u16 max_age = 0;
6380         struct os_reltime t, diff;
6381         unsigned long diff_l;
6382         u8 *ptoken;
6383         const u8 *subelem;
6384
6385         if (!wpa_s->lci || len < 3 + 4)
6386                 return report;
6387
6388         token = *request++;
6389         /* Measurement request mode isn't used */
6390         request++;
6391         type = *request++;
6392         subject = *request++;
6393
6394         wpa_printf(MSG_DEBUG,
6395                    "Measurement request token %u type %u location subject %u",
6396                    token, type, subject);
6397
6398         if (type != MEASURE_TYPE_LCI || subject != LOCATION_SUBJECT_REMOTE) {
6399                 wpa_printf(MSG_INFO,
6400                            "Not building LCI report - bad type or location subject");
6401                 return report;
6402         }
6403
6404         /* Subelements are formatted exactly like elements */
6405         subelem = get_ie(request, len, LCI_REQ_SUBELEM_MAX_AGE);
6406         if (subelem && subelem[1] == 2)
6407                 max_age = WPA_GET_LE16(subelem + 2);
6408
6409         if (os_get_reltime(&t))
6410                 return report;
6411
6412         os_reltime_sub(&t, &wpa_s->lci_time, &diff);
6413         /* LCI age is calculated in 10th of a second units. */
6414         diff_l = diff.sec * 10 + diff.usec / 100000;
6415
6416         if (max_age != 0xffff && max_age < diff_l)
6417                 return report;
6418
6419         if (wpabuf_resize(&report, 2 + wpabuf_len(wpa_s->lci)))
6420                 return report;
6421
6422         wpabuf_put_u8(report, WLAN_EID_MEASURE_REPORT);
6423         wpabuf_put_u8(report, wpabuf_len(wpa_s->lci));
6424         /* We'll override user's measurement token */
6425         ptoken = wpabuf_put(report, 0);
6426         wpabuf_put_buf(report, wpa_s->lci);
6427         *ptoken = token;
6428
6429         return report;
6430 }
6431
6432
6433 void wpas_rrm_handle_radio_measurement_request(struct wpa_supplicant *wpa_s,
6434                                                const u8 *src,
6435                                                const u8 *frame, size_t len)
6436 {
6437         struct wpabuf *buf, *report;
6438         u8 token;
6439         const u8 *ie, *end;
6440
6441         if (wpa_s->wpa_state != WPA_COMPLETED) {
6442                 wpa_printf(MSG_INFO,
6443                            "RRM: Ignoring radio measurement request: Not associated");
6444                 return;
6445         }
6446
6447         if (!wpa_s->rrm.rrm_used) {
6448                 wpa_printf(MSG_INFO,
6449                            "RRM: Ignoring radio measurement request: Not RRM network");
6450                 return;
6451         }
6452
6453         if (len < 3) {
6454                 wpa_printf(MSG_INFO,
6455                            "RRM: Ignoring too short radio measurement request");
6456                 return;
6457         }
6458
6459         end = frame + len;
6460
6461         token = *frame++;
6462
6463         /* Ignore number of repetitions because it's not used in LCI request */
6464         frame += 2;
6465
6466         report = NULL;
6467         while ((ie = get_ie(frame, end - frame, WLAN_EID_MEASURE_REQUEST)) &&
6468                ie[1] >= 3) {
6469                 u8 msmt_type;
6470
6471                 msmt_type = ie[4];
6472                 wpa_printf(MSG_DEBUG, "RRM request %d", msmt_type);
6473
6474                 switch (msmt_type) {
6475                 case MEASURE_TYPE_LCI:
6476                         report = wpas_rrm_build_lci_report(wpa_s, ie + 2, ie[1],
6477                                                            report);
6478                         break;
6479                 default:
6480                         wpa_printf(MSG_INFO,
6481                                    "RRM: Unsupported radio measurement request %d",
6482                                    msmt_type);
6483                         break;
6484                 }
6485
6486                 frame = ie + ie[1] + 2;
6487         }
6488
6489         if (!report)
6490                 return;
6491
6492         buf = wpabuf_alloc(3 + wpabuf_len(report));
6493         if (!buf) {
6494                 wpabuf_free(report);
6495                 return;
6496         }
6497
6498         wpabuf_put_u8(buf, WLAN_ACTION_RADIO_MEASUREMENT);
6499         wpabuf_put_u8(buf, WLAN_RRM_RADIO_MEASUREMENT_REPORT);
6500         wpabuf_put_u8(buf, token);
6501
6502         wpabuf_put_buf(buf, report);
6503         wpabuf_free(report);
6504
6505         if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, src,
6506                                 wpa_s->own_addr, wpa_s->bssid,
6507                                 wpabuf_head(buf), wpabuf_len(buf), 0)) {
6508                 wpa_printf(MSG_ERROR,
6509                            "RRM: Radio measurement report failed: Sending Action frame failed");
6510         }
6511         wpabuf_free(buf);
6512 }
6513
6514
6515 void wpas_rrm_handle_link_measurement_request(struct wpa_supplicant *wpa_s,
6516                                               const u8 *src,
6517                                               const u8 *frame, size_t len,
6518                                               int rssi)
6519 {
6520         struct wpabuf *buf;
6521         const struct rrm_link_measurement_request *req;
6522         struct rrm_link_measurement_report report;
6523
6524         if (wpa_s->wpa_state != WPA_COMPLETED) {
6525                 wpa_printf(MSG_INFO,
6526                            "RRM: Ignoring link measurement request. Not associated");
6527                 return;
6528         }
6529
6530         if (!wpa_s->rrm.rrm_used) {
6531                 wpa_printf(MSG_INFO,
6532                            "RRM: Ignoring link measurement request. Not RRM network");
6533                 return;
6534         }
6535
6536         if (!(wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION)) {
6537                 wpa_printf(MSG_INFO,
6538                            "RRM: Measurement report failed. TX power insertion not supported");
6539                 return;
6540         }
6541
6542         req = (const struct rrm_link_measurement_request *) frame;
6543         if (len < sizeof(*req)) {
6544                 wpa_printf(MSG_INFO,
6545                            "RRM: Link measurement report failed. Request too short");
6546                 return;
6547         }
6548
6549         os_memset(&report, 0, sizeof(report));
6550         report.tpc.eid = WLAN_EID_TPC_REPORT;
6551         report.tpc.len = 2;
6552         report.rsni = 255; /* 255 indicates that RSNI is not available */
6553         report.dialog_token = req->dialog_token;
6554
6555         /*
6556          * It's possible to estimate RCPI based on RSSI in dBm. This
6557          * calculation will not reflect the correct value for high rates,
6558          * but it's good enough for Action frames which are transmitted
6559          * with up to 24 Mbps rates.
6560          */
6561         if (!rssi)
6562                 report.rcpi = 255; /* not available */
6563         else if (rssi < -110)
6564                 report.rcpi = 0;
6565         else if (rssi > 0)
6566                 report.rcpi = 220;
6567         else
6568                 report.rcpi = (rssi + 110) * 2;
6569
6570         /* action_category + action_code */
6571         buf = wpabuf_alloc(2 + sizeof(report));
6572         if (buf == NULL) {
6573                 wpa_printf(MSG_ERROR,
6574                            "RRM: Link measurement report failed. Buffer allocation failed");
6575                 return;
6576         }
6577
6578         wpabuf_put_u8(buf, WLAN_ACTION_RADIO_MEASUREMENT);
6579         wpabuf_put_u8(buf, WLAN_RRM_LINK_MEASUREMENT_REPORT);
6580         wpabuf_put_data(buf, &report, sizeof(report));
6581         wpa_hexdump(MSG_DEBUG, "RRM: Link measurement report:",
6582                     wpabuf_head(buf), wpabuf_len(buf));
6583
6584         if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, src,
6585                                 wpa_s->own_addr, wpa_s->bssid,
6586                                 wpabuf_head(buf), wpabuf_len(buf), 0)) {
6587                 wpa_printf(MSG_ERROR,
6588                            "RRM: Link measurement report failed. Send action failed");
6589         }
6590         wpabuf_free(buf);
6591 }
6592
6593
6594 struct wpa_supplicant *
6595 wpas_vendor_elem(struct wpa_supplicant *wpa_s, enum wpa_vendor_elem_frame frame)
6596 {
6597         switch (frame) {
6598 #ifdef CONFIG_P2P
6599         case VENDOR_ELEM_PROBE_REQ_P2P:
6600         case VENDOR_ELEM_PROBE_RESP_P2P:
6601         case VENDOR_ELEM_PROBE_RESP_P2P_GO:
6602         case VENDOR_ELEM_BEACON_P2P_GO:
6603         case VENDOR_ELEM_P2P_PD_REQ:
6604         case VENDOR_ELEM_P2P_PD_RESP:
6605         case VENDOR_ELEM_P2P_GO_NEG_REQ:
6606         case VENDOR_ELEM_P2P_GO_NEG_RESP:
6607         case VENDOR_ELEM_P2P_GO_NEG_CONF:
6608         case VENDOR_ELEM_P2P_INV_REQ:
6609         case VENDOR_ELEM_P2P_INV_RESP:
6610         case VENDOR_ELEM_P2P_ASSOC_REQ:
6611         case VENDOR_ELEM_P2P_ASSOC_RESP:
6612                 return wpa_s->p2pdev;
6613 #endif /* CONFIG_P2P */
6614         default:
6615                 return wpa_s;
6616         }
6617 }
6618
6619
6620 void wpas_vendor_elem_update(struct wpa_supplicant *wpa_s)
6621 {
6622         unsigned int i;
6623         char buf[30];
6624
6625         wpa_printf(MSG_DEBUG, "Update vendor elements");
6626
6627         for (i = 0; i < NUM_VENDOR_ELEM_FRAMES; i++) {
6628                 if (wpa_s->vendor_elem[i]) {
6629                         int res;
6630
6631                         res = os_snprintf(buf, sizeof(buf), "frame[%u]", i);
6632                         if (!os_snprintf_error(sizeof(buf), res)) {
6633                                 wpa_hexdump_buf(MSG_DEBUG, buf,
6634                                                 wpa_s->vendor_elem[i]);
6635                         }
6636                 }
6637         }
6638
6639 #ifdef CONFIG_P2P
6640         if (wpa_s->parent == wpa_s &&
6641             wpa_s->global->p2p &&
6642             !wpa_s->global->p2p_disabled)
6643                 p2p_set_vendor_elems(wpa_s->global->p2p, wpa_s->vendor_elem);
6644 #endif /* CONFIG_P2P */
6645 }
6646
6647
6648 int wpas_vendor_elem_remove(struct wpa_supplicant *wpa_s, int frame,
6649                             const u8 *elem, size_t len)
6650 {
6651         u8 *ie, *end;
6652
6653         ie = wpabuf_mhead_u8(wpa_s->vendor_elem[frame]);
6654         end = ie + wpabuf_len(wpa_s->vendor_elem[frame]);
6655
6656         for (; ie + 1 < end; ie += 2 + ie[1]) {
6657                 if (ie + len > end)
6658                         break;
6659                 if (os_memcmp(ie, elem, len) != 0)
6660                         continue;
6661
6662                 if (wpabuf_len(wpa_s->vendor_elem[frame]) == len) {
6663                         wpabuf_free(wpa_s->vendor_elem[frame]);
6664                         wpa_s->vendor_elem[frame] = NULL;
6665                 } else {
6666                         os_memmove(ie, ie + len, end - (ie + len));
6667                         wpa_s->vendor_elem[frame]->used -= len;
6668                 }
6669                 wpas_vendor_elem_update(wpa_s);
6670                 return 0;
6671         }
6672
6673         return -1;
6674 }
6675
6676
6677 struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
6678                                    u16 num_modes, enum hostapd_hw_mode mode)
6679 {
6680         u16 i;
6681
6682         for (i = 0; i < num_modes; i++) {
6683                 if (modes[i].mode == mode)
6684                         return &modes[i];
6685         }
6686
6687         return NULL;
6688 }
6689
6690
6691 static struct
6692 wpa_bss_tmp_disallowed * wpas_get_disallowed_bss(struct wpa_supplicant *wpa_s,
6693                                                  const u8 *bssid)
6694 {
6695         struct wpa_bss_tmp_disallowed *bss;
6696
6697         dl_list_for_each(bss, &wpa_s->bss_tmp_disallowed,
6698                          struct wpa_bss_tmp_disallowed, list) {
6699                 if (os_memcmp(bssid, bss->bssid, ETH_ALEN) == 0)
6700                         return bss;
6701         }
6702
6703         return NULL;
6704 }
6705
6706
6707 void wpa_bss_tmp_disallow(struct wpa_supplicant *wpa_s, const u8 *bssid,
6708                           unsigned int sec)
6709 {
6710         struct wpa_bss_tmp_disallowed *bss;
6711         struct os_reltime until;
6712
6713         os_get_reltime(&until);
6714         until.sec += sec;
6715
6716         bss = wpas_get_disallowed_bss(wpa_s, bssid);
6717         if (bss) {
6718                 bss->disallowed_until = until;
6719                 return;
6720         }
6721
6722         bss = os_malloc(sizeof(*bss));
6723         if (!bss) {
6724                 wpa_printf(MSG_DEBUG,
6725                            "Failed to allocate memory for temp disallow BSS");
6726                 return;
6727         }
6728
6729         bss->disallowed_until = until;
6730         os_memcpy(bss->bssid, bssid, ETH_ALEN);
6731         dl_list_add(&wpa_s->bss_tmp_disallowed, &bss->list);
6732 }
6733
6734
6735 int wpa_is_bss_tmp_disallowed(struct wpa_supplicant *wpa_s, const u8 *bssid)
6736 {
6737         struct wpa_bss_tmp_disallowed *bss = NULL, *tmp, *prev;
6738         struct os_reltime now, age;
6739
6740         os_get_reltime(&now);
6741
6742         dl_list_for_each_safe(tmp, prev, &wpa_s->bss_tmp_disallowed,
6743                          struct wpa_bss_tmp_disallowed, list) {
6744                 if (!os_reltime_before(&now, &tmp->disallowed_until)) {
6745                         /* This BSS is not disallowed anymore */
6746                         dl_list_del(&tmp->list);
6747                         os_free(tmp);
6748                         continue;
6749                 }
6750                 if (os_memcmp(bssid, tmp->bssid, ETH_ALEN) == 0) {
6751                         bss = tmp;
6752                         break;
6753                 }
6754         }
6755         if (!bss)
6756                 return 0;
6757
6758         os_reltime_sub(&bss->disallowed_until, &now, &age);
6759         wpa_printf(MSG_DEBUG,
6760                    "BSS " MACSTR " disabled for %ld.%0ld seconds",
6761                    MAC2STR(bss->bssid), age.sec, age.usec);
6762         return 1;
6763 }