contrib/wpa/src/ap/hostapd.c

   1 /*
   2  * hostapd / Initialization and configuration
   3  * Copyright (c) 2002-2014, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "utils/includes.h"
  10
  11 #include "utils/common.h"
  12 #include "utils/eloop.h"
  13 #include "common/ieee802_11_defs.h"
  14 #include "common/wpa_ctrl.h"
  15 #include "common/hw_features_common.h"
  16 #include "radius/radius_client.h"
  17 #include "radius/radius_das.h"
  18 #include "eap_server/tncs.h"
  19 #include "eapol_auth/eapol_auth_sm.h"
  20 #include "eapol_auth/eapol_auth_sm_i.h"
  21 #include "fst/fst.h"
  22 #include "hostapd.h"
  23 #include "authsrv.h"
  24 #include "sta_info.h"
  25 #include "accounting.h"
  26 #include "ap_list.h"
  27 #include "beacon.h"
  28 #include "iapp.h"
  29 #include "ieee802_1x.h"
  30 #include "ieee802_11_auth.h"
  31 #include "vlan_init.h"
  32 #include "wpa_auth.h"
  33 #include "wps_hostapd.h"
  34 #include "dpp_hostapd.h"
  35 #include "gas_query_ap.h"
  36 #include "hw_features.h"
  37 #include "wpa_auth_glue.h"
  38 #include "ap_drv_ops.h"
  39 #include "ap_config.h"
  40 #include "p2p_hostapd.h"
  41 #include "gas_serv.h"
  42 #include "dfs.h"
  43 #include "ieee802_11.h"
  44 #include "bss_load.h"
  45 #include "x_snoop.h"
  46 #include "dhcp_snoop.h"
  47 #include "ndisc_snoop.h"
  48 #include "neighbor_db.h"
  49 #include "rrm.h"
  50 #include "fils_hlp.h"
  51 #include "acs.h"
  52 #include "hs20.h"
  53
  54
  55 static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason);
  56 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd);
  57 static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd);
  58 static int setup_interface2(struct hostapd_iface *iface);
  59 static void channel_list_update_timeout(void *eloop_ctx, void *timeout_ctx);
  60 static void hostapd_interface_setup_failure_handler(void *eloop_ctx,
  61                                                     void *timeout_ctx);
  62
  63
  64 int hostapd_for_each_interface(struct hapd_interfaces *interfaces,
  65                                int (*cb)(struct hostapd_iface *iface,
  66                                          void *ctx), void *ctx)
  67 {
  68         size_t i;
  69         int ret;
  70
  71         for (i = 0; i < interfaces->count; i++) {
  72                 ret = cb(interfaces->iface[i], ctx);
  73                 if (ret)
  74                         return ret;
  75         }
  76
  77         return 0;
  78 }
  79
  80
  81 void hostapd_reconfig_encryption(struct hostapd_data *hapd)
  82 {
  83         if (hapd->wpa_auth)
  84                 return;
  85
  86         hostapd_set_privacy(hapd, 0);
  87         hostapd_setup_encryption(hapd->conf->iface, hapd);
  88 }
  89
  90
  91 static void hostapd_reload_bss(struct hostapd_data *hapd)
  92 {
  93         struct hostapd_ssid *ssid;
  94
  95         if (!hapd->started)
  96                 return;
  97
  98         if (hapd->conf->wmm_enabled < 0)
  99                 hapd->conf->wmm_enabled = hapd->iconf->ieee80211n;
 100
 101 #ifndef CONFIG_NO_RADIUS
 102         radius_client_reconfig(hapd->radius, hapd->conf->radius);
 103 #endif /* CONFIG_NO_RADIUS */
 104
 105         ssid = &hapd->conf->ssid;
 106         if (!ssid->wpa_psk_set && ssid->wpa_psk && !ssid->wpa_psk->next &&
 107             ssid->wpa_passphrase_set && ssid->wpa_passphrase) {
 108                 /*
 109                  * Force PSK to be derived again since SSID or passphrase may
 110                  * have changed.
 111                  */
 112                 hostapd_config_clear_wpa_psk(&hapd->conf->ssid.wpa_psk);
 113         }
 114         if (hostapd_setup_wpa_psk(hapd->conf)) {
 115                 wpa_printf(MSG_ERROR, "Failed to re-configure WPA PSK "
 116                            "after reloading configuration");
 117         }
 118
 119         if (hapd->conf->ieee802_1x || hapd->conf->wpa)
 120                 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 1);
 121         else
 122                 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 0);
 123
 124         if ((hapd->conf->wpa || hapd->conf->osen) && hapd->wpa_auth == NULL) {
 125                 hostapd_setup_wpa(hapd);
 126                 if (hapd->wpa_auth)
 127                         wpa_init_keys(hapd->wpa_auth);
 128         } else if (hapd->conf->wpa) {
 129                 const u8 *wpa_ie;
 130                 size_t wpa_ie_len;
 131                 hostapd_reconfig_wpa(hapd);
 132                 wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len);
 133                 if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len))
 134                         wpa_printf(MSG_ERROR, "Failed to configure WPA IE for "
 135                                    "the kernel driver.");
 136         } else if (hapd->wpa_auth) {
 137                 wpa_deinit(hapd->wpa_auth);
 138                 hapd->wpa_auth = NULL;
 139                 hostapd_set_privacy(hapd, 0);
 140                 hostapd_setup_encryption(hapd->conf->iface, hapd);
 141                 hostapd_set_generic_elem(hapd, (u8 *) "", 0);
 142         }
 143
 144         ieee802_11_set_beacon(hapd);
 145         hostapd_update_wps(hapd);
 146
 147         if (hapd->conf->ssid.ssid_set &&
 148             hostapd_set_ssid(hapd, hapd->conf->ssid.ssid,
 149                              hapd->conf->ssid.ssid_len)) {
 150                 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
 151                 /* try to continue */
 152         }
 153         wpa_printf(MSG_DEBUG, "Reconfigured interface %s", hapd->conf->iface);
 154 }
 155
 156
 157 static void hostapd_clear_old(struct hostapd_iface *iface)
 158 {
 159         size_t j;
 160
 161         /*
 162          * Deauthenticate all stations since the new configuration may not
 163          * allow them to use the BSS anymore.
 164          */
 165         for (j = 0; j < iface->num_bss; j++) {
 166                 hostapd_flush_old_stations(iface->bss[j],
 167                                            WLAN_REASON_PREV_AUTH_NOT_VALID);
 168                 hostapd_broadcast_wep_clear(iface->bss[j]);
 169
 170 #ifndef CONFIG_NO_RADIUS
 171                 /* TODO: update dynamic data based on changed configuration
 172                  * items (e.g., open/close sockets, etc.) */
 173                 radius_client_flush(iface->bss[j]->radius, 0);
 174 #endif /* CONFIG_NO_RADIUS */
 175         }
 176 }
 177
 178
 179 static int hostapd_iface_conf_changed(struct hostapd_config *newconf,
 180                                       struct hostapd_config *oldconf)
 181 {
 182         size_t i;
 183
 184         if (newconf->num_bss != oldconf->num_bss)
 185                 return 1;
 186
 187         for (i = 0; i < newconf->num_bss; i++) {
 188                 if (os_strcmp(newconf->bss[i]->iface,
 189                               oldconf->bss[i]->iface) != 0)
 190                         return 1;
 191         }
 192
 193         return 0;
 194 }
 195
 196
 197 int hostapd_reload_config(struct hostapd_iface *iface)
 198 {
 199         struct hapd_interfaces *interfaces = iface->interfaces;
 200         struct hostapd_data *hapd = iface->bss[0];
 201         struct hostapd_config *newconf, *oldconf;
 202         size_t j;
 203
 204         if (iface->config_fname == NULL) {
 205                 /* Only in-memory config in use - assume it has been updated */
 206                 hostapd_clear_old(iface);
 207                 for (j = 0; j < iface->num_bss; j++)
 208                         hostapd_reload_bss(iface->bss[j]);
 209                 return 0;
 210         }
 211
 212         if (iface->interfaces == NULL ||
 213             iface->interfaces->config_read_cb == NULL)
 214                 return -1;
 215         newconf = iface->interfaces->config_read_cb(iface->config_fname);
 216         if (newconf == NULL)
 217                 return -1;
 218
 219         hostapd_clear_old(iface);
 220
 221         oldconf = hapd->iconf;
 222         if (hostapd_iface_conf_changed(newconf, oldconf)) {
 223                 char *fname;
 224                 int res;
 225
 226                 wpa_printf(MSG_DEBUG,
 227                            "Configuration changes include interface/BSS modification - force full disable+enable sequence");
 228                 fname = os_strdup(iface->config_fname);
 229                 if (!fname) {
 230                         hostapd_config_free(newconf);
 231                         return -1;
 232                 }
 233                 hostapd_remove_iface(interfaces, hapd->conf->iface);
 234                 iface = hostapd_init(interfaces, fname);
 235                 os_free(fname);
 236                 hostapd_config_free(newconf);
 237                 if (!iface) {
 238                         wpa_printf(MSG_ERROR,
 239                                    "Failed to initialize interface on config reload");
 240                         return -1;
 241                 }
 242                 iface->interfaces = interfaces;
 243                 interfaces->iface[interfaces->count] = iface;
 244                 interfaces->count++;
 245                 res = hostapd_enable_iface(iface);
 246                 if (res < 0)
 247                         wpa_printf(MSG_ERROR,
 248                                    "Failed to enable interface on config reload");
 249                 return res;
 250         }
 251         iface->conf = newconf;
 252
 253         for (j = 0; j < iface->num_bss; j++) {
 254                 hapd = iface->bss[j];
 255                 hapd->iconf = newconf;
 256                 hapd->iconf->channel = oldconf->channel;
 257                 hapd->iconf->acs = oldconf->acs;
 258                 hapd->iconf->secondary_channel = oldconf->secondary_channel;
 259                 hapd->iconf->ieee80211n = oldconf->ieee80211n;
 260                 hapd->iconf->ieee80211ac = oldconf->ieee80211ac;
 261                 hapd->iconf->ht_capab = oldconf->ht_capab;
 262                 hapd->iconf->vht_capab = oldconf->vht_capab;
 263                 hapd->iconf->vht_oper_chwidth = oldconf->vht_oper_chwidth;
 264                 hapd->iconf->vht_oper_centr_freq_seg0_idx =
 265                         oldconf->vht_oper_centr_freq_seg0_idx;
 266                 hapd->iconf->vht_oper_centr_freq_seg1_idx =
 267                         oldconf->vht_oper_centr_freq_seg1_idx;
 268                 hapd->conf = newconf->bss[j];
 269                 hostapd_reload_bss(hapd);
 270         }
 271
 272         hostapd_config_free(oldconf);
 273
 274
 275         return 0;
 276 }
 277
 278
 279 static void hostapd_broadcast_key_clear_iface(struct hostapd_data *hapd,
 280                                               const char *ifname)
 281 {
 282         int i;
 283
 284         if (!ifname || !hapd->drv_priv)
 285                 return;
 286         for (i = 0; i < NUM_WEP_KEYS; i++) {
 287                 if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE, NULL, i,
 288                                         0, NULL, 0, NULL, 0)) {
 289                         wpa_printf(MSG_DEBUG, "Failed to clear default "
 290                                    "encryption keys (ifname=%s keyidx=%d)",
 291                                    ifname, i);
 292                 }
 293         }
 294 #ifdef CONFIG_IEEE80211W
 295         if (hapd->conf->ieee80211w) {
 296                 for (i = NUM_WEP_KEYS; i < NUM_WEP_KEYS + 2; i++) {
 297                         if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE,
 298                                                 NULL, i, 0, NULL,
 299                                                 0, NULL, 0)) {
 300                                 wpa_printf(MSG_DEBUG, "Failed to clear "
 301                                            "default mgmt encryption keys "
 302                                            "(ifname=%s keyidx=%d)", ifname, i);
 303                         }
 304                 }
 305         }
 306 #endif /* CONFIG_IEEE80211W */
 307 }
 308
 309
 310 static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd)
 311 {
 312         hostapd_broadcast_key_clear_iface(hapd, hapd->conf->iface);
 313         return 0;
 314 }
 315
 316
 317 static int hostapd_broadcast_wep_set(struct hostapd_data *hapd)
 318 {
 319         int errors = 0, idx;
 320         struct hostapd_ssid *ssid = &hapd->conf->ssid;
 321
 322         idx = ssid->wep.idx;
 323         if (ssid->wep.default_len &&
 324             hostapd_drv_set_key(hapd->conf->iface,
 325                                 hapd, WPA_ALG_WEP, broadcast_ether_addr, idx,
 326                                 1, NULL, 0, ssid->wep.key[idx],
 327                                 ssid->wep.len[idx])) {
 328                 wpa_printf(MSG_WARNING, "Could not set WEP encryption.");
 329                 errors++;
 330         }
 331
 332         return errors;
 333 }
 334
 335
 336 static void hostapd_free_hapd_data(struct hostapd_data *hapd)
 337 {
 338         os_free(hapd->probereq_cb);
 339         hapd->probereq_cb = NULL;
 340         hapd->num_probereq_cb = 0;
 341
 342 #ifdef CONFIG_P2P
 343         wpabuf_free(hapd->p2p_beacon_ie);
 344         hapd->p2p_beacon_ie = NULL;
 345         wpabuf_free(hapd->p2p_probe_resp_ie);
 346         hapd->p2p_probe_resp_ie = NULL;
 347 #endif /* CONFIG_P2P */
 348
 349         if (!hapd->started) {
 350                 wpa_printf(MSG_ERROR, "%s: Interface %s wasn't started",
 351                            __func__, hapd->conf->iface);
 352                 return;
 353         }
 354         hapd->started = 0;
 355
 356         wpa_printf(MSG_DEBUG, "%s(%s)", __func__, hapd->conf->iface);
 357         iapp_deinit(hapd->iapp);
 358         hapd->iapp = NULL;
 359         accounting_deinit(hapd);
 360         hostapd_deinit_wpa(hapd);
 361         vlan_deinit(hapd);
 362         hostapd_acl_deinit(hapd);
 363 #ifndef CONFIG_NO_RADIUS
 364         radius_client_deinit(hapd->radius);
 365         hapd->radius = NULL;
 366         radius_das_deinit(hapd->radius_das);
 367         hapd->radius_das = NULL;
 368 #endif /* CONFIG_NO_RADIUS */
 369
 370         hostapd_deinit_wps(hapd);
 371 #ifdef CONFIG_DPP
 372         hostapd_dpp_deinit(hapd);
 373         gas_query_ap_deinit(hapd->gas);
 374 #endif /* CONFIG_DPP */
 375
 376         authsrv_deinit(hapd);
 377
 378         if (hapd->interface_added) {
 379                 hapd->interface_added = 0;
 380                 if (hostapd_if_remove(hapd, WPA_IF_AP_BSS, hapd->conf->iface)) {
 381                         wpa_printf(MSG_WARNING,
 382                                    "Failed to remove BSS interface %s",
 383                                    hapd->conf->iface);
 384                         hapd->interface_added = 1;
 385                 } else {
 386                         /*
 387                          * Since this was a dynamically added interface, the
 388                          * driver wrapper may have removed its internal instance
 389                          * and hapd->drv_priv is not valid anymore.
 390                          */
 391                         hapd->drv_priv = NULL;
 392                 }
 393         }
 394
 395         wpabuf_free(hapd->time_adv);
 396
 397 #ifdef CONFIG_INTERWORKING
 398         gas_serv_deinit(hapd);
 399 #endif /* CONFIG_INTERWORKING */
 400
 401         bss_load_update_deinit(hapd);
 402         ndisc_snoop_deinit(hapd);
 403         dhcp_snoop_deinit(hapd);
 404         x_snoop_deinit(hapd);
 405
 406 #ifdef CONFIG_SQLITE
 407         bin_clear_free(hapd->tmp_eap_user.identity,
 408                        hapd->tmp_eap_user.identity_len);
 409         bin_clear_free(hapd->tmp_eap_user.password,
 410                        hapd->tmp_eap_user.password_len);
 411 #endif /* CONFIG_SQLITE */
 412
 413 #ifdef CONFIG_MESH
 414         wpabuf_free(hapd->mesh_pending_auth);
 415         hapd->mesh_pending_auth = NULL;
 416 #endif /* CONFIG_MESH */
 417
 418         hostapd_clean_rrm(hapd);
 419         fils_hlp_deinit(hapd);
 420 }
 421
 422
 423 /**
 424  * hostapd_cleanup - Per-BSS cleanup (deinitialization)
 425  * @hapd: Pointer to BSS data
 426  *
 427  * This function is used to free all per-BSS data structures and resources.
 428  * Most of the modules that are initialized in hostapd_setup_bss() are
 429  * deinitialized here.
 430  */
 431 static void hostapd_cleanup(struct hostapd_data *hapd)
 432 {
 433         wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s))", __func__, hapd,
 434                    hapd->conf->iface);
 435         if (hapd->iface->interfaces &&
 436             hapd->iface->interfaces->ctrl_iface_deinit) {
 437                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPA_EVENT_TERMINATING);
 438                 hapd->iface->interfaces->ctrl_iface_deinit(hapd);
 439         }
 440         hostapd_free_hapd_data(hapd);
 441 }
 442
 443
 444 static void sta_track_deinit(struct hostapd_iface *iface)
 445 {
 446         struct hostapd_sta_info *info;
 447
 448         if (!iface->num_sta_seen)
 449                 return;
 450
 451         while ((info = dl_list_first(&iface->sta_seen, struct hostapd_sta_info,
 452                                      list))) {
 453                 dl_list_del(&info->list);
 454                 iface->num_sta_seen--;
 455                 sta_track_del(info);
 456         }
 457 }
 458
 459
 460 static void hostapd_cleanup_iface_partial(struct hostapd_iface *iface)
 461 {
 462         wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
 463 #ifdef CONFIG_IEEE80211N
 464 #ifdef NEED_AP_MLME
 465         hostapd_stop_setup_timers(iface);
 466 #endif /* NEED_AP_MLME */
 467 #endif /* CONFIG_IEEE80211N */
 468         if (iface->current_mode)
 469                 acs_cleanup(iface);
 470         hostapd_free_hw_features(iface->hw_features, iface->num_hw_features);
 471         iface->hw_features = NULL;
 472         iface->current_mode = NULL;
 473         os_free(iface->current_rates);
 474         iface->current_rates = NULL;
 475         os_free(iface->basic_rates);
 476         iface->basic_rates = NULL;
 477         ap_list_deinit(iface);
 478         sta_track_deinit(iface);
 479 }
 480
 481
 482 /**
 483  * hostapd_cleanup_iface - Complete per-interface cleanup
 484  * @iface: Pointer to interface data
 485  *
 486  * This function is called after per-BSS data structures are deinitialized
 487  * with hostapd_cleanup().
 488  */
 489 static void hostapd_cleanup_iface(struct hostapd_iface *iface)
 490 {
 491         wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
 492         eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
 493         eloop_cancel_timeout(hostapd_interface_setup_failure_handler, iface,
 494                              NULL);
 495
 496         hostapd_cleanup_iface_partial(iface);
 497         hostapd_config_free(iface->conf);
 498         iface->conf = NULL;
 499
 500         os_free(iface->config_fname);
 501         os_free(iface->bss);
 502         wpa_printf(MSG_DEBUG, "%s: free iface=%p", __func__, iface);
 503         os_free(iface);
 504 }
 505
 506
 507 static void hostapd_clear_wep(struct hostapd_data *hapd)
 508 {
 509         if (hapd->drv_priv && !hapd->iface->driver_ap_teardown) {
 510                 hostapd_set_privacy(hapd, 0);
 511                 hostapd_broadcast_wep_clear(hapd);
 512         }
 513 }
 514
 515
 516 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd)
 517 {
 518         int i;
 519
 520         hostapd_broadcast_wep_set(hapd);
 521
 522         if (hapd->conf->ssid.wep.default_len) {
 523                 hostapd_set_privacy(hapd, 1);
 524                 return 0;
 525         }
 526
 527         /*
 528          * When IEEE 802.1X is not enabled, the driver may need to know how to
 529          * set authentication algorithms for static WEP.
 530          */
 531         hostapd_drv_set_authmode(hapd, hapd->conf->auth_algs);
 532
 533         for (i = 0; i < 4; i++) {
 534                 if (hapd->conf->ssid.wep.key[i] &&
 535                     hostapd_drv_set_key(iface, hapd, WPA_ALG_WEP, NULL, i,
 536                                         i == hapd->conf->ssid.wep.idx, NULL, 0,
 537                                         hapd->conf->ssid.wep.key[i],
 538                                         hapd->conf->ssid.wep.len[i])) {
 539                         wpa_printf(MSG_WARNING, "Could not set WEP "
 540                                    "encryption.");
 541                         return -1;
 542                 }
 543                 if (hapd->conf->ssid.wep.key[i] &&
 544                     i == hapd->conf->ssid.wep.idx)
 545                         hostapd_set_privacy(hapd, 1);
 546         }
 547
 548         return 0;
 549 }
 550
 551
 552 static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason)
 553 {
 554         int ret = 0;
 555         u8 addr[ETH_ALEN];
 556
 557         if (hostapd_drv_none(hapd) || hapd->drv_priv == NULL)
 558                 return 0;
 559
 560         if (!hapd->iface->driver_ap_teardown) {
 561                 wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
 562                         "Flushing old station entries");
 563
 564                 if (hostapd_flush(hapd)) {
 565                         wpa_msg(hapd->msg_ctx, MSG_WARNING,
 566                                 "Could not connect to kernel driver");
 567                         ret = -1;
 568                 }
 569         }
 570         if (hapd->conf && hapd->conf->broadcast_deauth) {
 571                 wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
 572                         "Deauthenticate all stations");
 573                 os_memset(addr, 0xff, ETH_ALEN);
 574                 hostapd_drv_sta_deauth(hapd, addr, reason);
 575         }
 576         hostapd_free_stas(hapd);
 577
 578         return ret;
 579 }
 580
 581
 582 static void hostapd_bss_deinit_no_free(struct hostapd_data *hapd)
 583 {
 584         hostapd_free_stas(hapd);
 585         hostapd_flush_old_stations(hapd, WLAN_REASON_DEAUTH_LEAVING);
 586         hostapd_clear_wep(hapd);
 587 }
 588
 589
 590 /**
 591  * hostapd_validate_bssid_configuration - Validate BSSID configuration
 592  * @iface: Pointer to interface data
 593  * Returns: 0 on success, -1 on failure
 594  *
 595  * This function is used to validate that the configured BSSIDs are valid.
 596  */
 597 static int hostapd_validate_bssid_configuration(struct hostapd_iface *iface)
 598 {
 599         u8 mask[ETH_ALEN] = { 0 };
 600         struct hostapd_data *hapd = iface->bss[0];
 601         unsigned int i = iface->conf->num_bss, bits = 0, j;
 602         int auto_addr = 0;
 603
 604         if (hostapd_drv_none(hapd))
 605                 return 0;
 606
 607         if (iface->conf->use_driver_iface_addr)
 608                 return 0;
 609
 610         /* Generate BSSID mask that is large enough to cover the BSSIDs. */
 611
 612         /* Determine the bits necessary to cover the number of BSSIDs. */
 613         for (i--; i; i >>= 1)
 614                 bits++;
 615
 616         /* Determine the bits necessary to any configured BSSIDs,
 617            if they are higher than the number of BSSIDs. */
 618         for (j = 0; j < iface->conf->num_bss; j++) {
 619                 if (is_zero_ether_addr(iface->conf->bss[j]->bssid)) {
 620                         if (j)
 621                                 auto_addr++;
 622                         continue;
 623                 }
 624
 625                 for (i = 0; i < ETH_ALEN; i++) {
 626                         mask[i] |=
 627                                 iface->conf->bss[j]->bssid[i] ^
 628                                 hapd->own_addr[i];
 629                 }
 630         }
 631
 632         if (!auto_addr)
 633                 goto skip_mask_ext;
 634
 635         for (i = 0; i < ETH_ALEN && mask[i] == 0; i++)
 636                 ;
 637         j = 0;
 638         if (i < ETH_ALEN) {
 639                 j = (5 - i) * 8;
 640
 641                 while (mask[i] != 0) {
 642                         mask[i] >>= 1;
 643                         j++;
 644                 }
 645         }
 646
 647         if (bits < j)
 648                 bits = j;
 649
 650         if (bits > 40) {
 651                 wpa_printf(MSG_ERROR, "Too many bits in the BSSID mask (%u)",
 652                            bits);
 653                 return -1;
 654         }
 655
 656         os_memset(mask, 0xff, ETH_ALEN);
 657         j = bits / 8;
 658         for (i = 5; i > 5 - j; i--)
 659                 mask[i] = 0;
 660         j = bits % 8;
 661         while (j--)
 662                 mask[i] <<= 1;
 663
 664 skip_mask_ext:
 665         wpa_printf(MSG_DEBUG, "BSS count %lu, BSSID mask " MACSTR " (%d bits)",
 666                    (unsigned long) iface->conf->num_bss, MAC2STR(mask), bits);
 667
 668         if (!auto_addr)
 669                 return 0;
 670
 671         for (i = 0; i < ETH_ALEN; i++) {
 672                 if ((hapd->own_addr[i] & mask[i]) != hapd->own_addr[i]) {
 673                         wpa_printf(MSG_ERROR, "Invalid BSSID mask " MACSTR
 674                                    " for start address " MACSTR ".",
 675                                    MAC2STR(mask), MAC2STR(hapd->own_addr));
 676                         wpa_printf(MSG_ERROR, "Start address must be the "
 677                                    "first address in the block (i.e., addr "
 678                                    "AND mask == addr).");
 679                         return -1;
 680                 }
 681         }
 682
 683         return 0;
 684 }
 685
 686
 687 static int mac_in_conf(struct hostapd_config *conf, const void *a)
 688 {
 689         size_t i;
 690
 691         for (i = 0; i < conf->num_bss; i++) {
 692                 if (hostapd_mac_comp(conf->bss[i]->bssid, a) == 0) {
 693                         return 1;
 694                 }
 695         }
 696
 697         return 0;
 698 }
 699
 700
 701 #ifndef CONFIG_NO_RADIUS
 702
 703 static int hostapd_das_nas_mismatch(struct hostapd_data *hapd,
 704                                     struct radius_das_attrs *attr)
 705 {
 706         if (attr->nas_identifier &&
 707             (!hapd->conf->nas_identifier ||
 708              os_strlen(hapd->conf->nas_identifier) !=
 709              attr->nas_identifier_len ||
 710              os_memcmp(hapd->conf->nas_identifier, attr->nas_identifier,
 711                        attr->nas_identifier_len) != 0)) {
 712                 wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-Identifier mismatch");
 713                 return 1;
 714         }
 715
 716         if (attr->nas_ip_addr &&
 717             (hapd->conf->own_ip_addr.af != AF_INET ||
 718              os_memcmp(&hapd->conf->own_ip_addr.u.v4, attr->nas_ip_addr, 4) !=
 719              0)) {
 720                 wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-IP-Address mismatch");
 721                 return 1;
 722         }
 723
 724 #ifdef CONFIG_IPV6
 725         if (attr->nas_ipv6_addr &&
 726             (hapd->conf->own_ip_addr.af != AF_INET6 ||
 727              os_memcmp(&hapd->conf->own_ip_addr.u.v6, attr->nas_ipv6_addr, 16)
 728              != 0)) {
 729                 wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-IPv6-Address mismatch");
 730                 return 1;
 731         }
 732 #endif /* CONFIG_IPV6 */
 733
 734         return 0;
 735 }
 736
 737
 738 static struct sta_info * hostapd_das_find_sta(struct hostapd_data *hapd,
 739                                               struct radius_das_attrs *attr,
 740                                               int *multi)
 741 {
 742         struct sta_info *selected, *sta;
 743         char buf[128];
 744         int num_attr = 0;
 745         int count;
 746
 747         *multi = 0;
 748
 749         for (sta = hapd->sta_list; sta; sta = sta->next)
 750                 sta->radius_das_match = 1;
 751
 752         if (attr->sta_addr) {
 753                 num_attr++;
 754                 sta = ap_get_sta(hapd, attr->sta_addr);
 755                 if (!sta) {
 756                         wpa_printf(MSG_DEBUG,
 757                                    "RADIUS DAS: No Calling-Station-Id match");
 758                         return NULL;
 759                 }
 760
 761                 selected = sta;
 762                 for (sta = hapd->sta_list; sta; sta = sta->next) {
 763                         if (sta != selected)
 764                                 sta->radius_das_match = 0;
 765                 }
 766                 wpa_printf(MSG_DEBUG, "RADIUS DAS: Calling-Station-Id match");
 767         }
 768
 769         if (attr->acct_session_id) {
 770                 num_attr++;
 771                 if (attr->acct_session_id_len != 16) {
 772                         wpa_printf(MSG_DEBUG,
 773                                    "RADIUS DAS: Acct-Session-Id cannot match");
 774                         return NULL;
 775                 }
 776                 count = 0;
 777
 778                 for (sta = hapd->sta_list; sta; sta = sta->next) {
 779                         if (!sta->radius_das_match)
 780                                 continue;
 781                         os_snprintf(buf, sizeof(buf), "%016llX",
 782                                     (unsigned long long) sta->acct_session_id);
 783                         if (os_memcmp(attr->acct_session_id, buf, 16) != 0)
 784                                 sta->radius_das_match = 0;
 785                         else
 786                                 count++;
 787                 }
 788
 789                 if (count == 0) {
 790                         wpa_printf(MSG_DEBUG,
 791                                    "RADIUS DAS: No matches remaining after Acct-Session-Id check");
 792                         return NULL;
 793                 }
 794                 wpa_printf(MSG_DEBUG, "RADIUS DAS: Acct-Session-Id match");
 795         }
 796
 797         if (attr->acct_multi_session_id) {
 798                 num_attr++;
 799                 if (attr->acct_multi_session_id_len != 16) {
 800                         wpa_printf(MSG_DEBUG,
 801                                    "RADIUS DAS: Acct-Multi-Session-Id cannot match");
 802                         return NULL;
 803                 }
 804                 count = 0;
 805
 806                 for (sta = hapd->sta_list; sta; sta = sta->next) {
 807                         if (!sta->radius_das_match)
 808                                 continue;
 809                         if (!sta->eapol_sm ||
 810                             !sta->eapol_sm->acct_multi_session_id) {
 811                                 sta->radius_das_match = 0;
 812                                 continue;
 813                         }
 814                         os_snprintf(buf, sizeof(buf), "%016llX",
 815                                     (unsigned long long)
 816                                     sta->eapol_sm->acct_multi_session_id);
 817                         if (os_memcmp(attr->acct_multi_session_id, buf, 16) !=
 818                             0)
 819                                 sta->radius_das_match = 0;
 820                         else
 821                                 count++;
 822                 }
 823
 824                 if (count == 0) {
 825                         wpa_printf(MSG_DEBUG,
 826                                    "RADIUS DAS: No matches remaining after Acct-Multi-Session-Id check");
 827                         return NULL;
 828                 }
 829                 wpa_printf(MSG_DEBUG,
 830                            "RADIUS DAS: Acct-Multi-Session-Id match");
 831         }
 832
 833         if (attr->cui) {
 834                 num_attr++;
 835                 count = 0;
 836
 837                 for (sta = hapd->sta_list; sta; sta = sta->next) {
 838                         struct wpabuf *cui;
 839
 840                         if (!sta->radius_das_match)
 841                                 continue;
 842                         cui = ieee802_1x_get_radius_cui(sta->eapol_sm);
 843                         if (!cui || wpabuf_len(cui) != attr->cui_len ||
 844                             os_memcmp(wpabuf_head(cui), attr->cui,
 845                                       attr->cui_len) != 0)
 846                                 sta->radius_das_match = 0;
 847                         else
 848                                 count++;
 849                 }
 850
 851                 if (count == 0) {
 852                         wpa_printf(MSG_DEBUG,
 853                                    "RADIUS DAS: No matches remaining after Chargeable-User-Identity check");
 854                         return NULL;
 855                 }
 856                 wpa_printf(MSG_DEBUG,
 857                            "RADIUS DAS: Chargeable-User-Identity match");
 858         }
 859
 860         if (attr->user_name) {
 861                 num_attr++;
 862                 count = 0;
 863
 864                 for (sta = hapd->sta_list; sta; sta = sta->next) {
 865                         u8 *identity;
 866                         size_t identity_len;
 867
 868                         if (!sta->radius_das_match)
 869                                 continue;
 870                         identity = ieee802_1x_get_identity(sta->eapol_sm,
 871                                                            &identity_len);
 872                         if (!identity ||
 873                             identity_len != attr->user_name_len ||
 874                             os_memcmp(identity, attr->user_name, identity_len)
 875                             != 0)
 876                                 sta->radius_das_match = 0;
 877                         else
 878                                 count++;
 879                 }
 880
 881                 if (count == 0) {
 882                         wpa_printf(MSG_DEBUG,
 883                                    "RADIUS DAS: No matches remaining after User-Name check");
 884                         return NULL;
 885                 }
 886                 wpa_printf(MSG_DEBUG,
 887                            "RADIUS DAS: User-Name match");
 888         }
 889
 890         if (num_attr == 0) {
 891                 /*
 892                  * In theory, we could match all current associations, but it
 893                  * seems safer to just reject requests that do not include any
 894                  * session identification attributes.
 895                  */
 896                 wpa_printf(MSG_DEBUG,
 897                            "RADIUS DAS: No session identification attributes included");
 898                 return NULL;
 899         }
 900
 901         selected = NULL;
 902         for (sta = hapd->sta_list; sta; sta = sta->next) {
 903                 if (sta->radius_das_match) {
 904                         if (selected) {
 905                                 *multi = 1;
 906                                 return NULL;
 907                         }
 908                         selected = sta;
 909                 }
 910         }
 911
 912         return selected;
 913 }
 914
 915
 916 static int hostapd_das_disconnect_pmksa(struct hostapd_data *hapd,
 917                                         struct radius_das_attrs *attr)
 918 {
 919         if (!hapd->wpa_auth)
 920                 return -1;
 921         return wpa_auth_radius_das_disconnect_pmksa(hapd->wpa_auth, attr);
 922 }
 923
 924
 925 static enum radius_das_res
 926 hostapd_das_disconnect(void *ctx, struct radius_das_attrs *attr)
 927 {
 928         struct hostapd_data *hapd = ctx;
 929         struct sta_info *sta;
 930         int multi;
 931
 932         if (hostapd_das_nas_mismatch(hapd, attr))
 933                 return RADIUS_DAS_NAS_MISMATCH;
 934
 935         sta = hostapd_das_find_sta(hapd, attr, &multi);
 936         if (sta == NULL) {
 937                 if (multi) {
 938                         wpa_printf(MSG_DEBUG,
 939                                    "RADIUS DAS: Multiple sessions match - not supported");
 940                         return RADIUS_DAS_MULTI_SESSION_MATCH;
 941                 }
 942                 if (hostapd_das_disconnect_pmksa(hapd, attr) == 0) {
 943                         wpa_printf(MSG_DEBUG,
 944                                    "RADIUS DAS: PMKSA cache entry matched");
 945                         return RADIUS_DAS_SUCCESS;
 946                 }
 947                 wpa_printf(MSG_DEBUG, "RADIUS DAS: No matching session found");
 948                 return RADIUS_DAS_SESSION_NOT_FOUND;
 949         }
 950
 951         wpa_printf(MSG_DEBUG, "RADIUS DAS: Found a matching session " MACSTR
 952                    " - disconnecting", MAC2STR(sta->addr));
 953         wpa_auth_pmksa_remove(hapd->wpa_auth, sta->addr);
 954
 955         hostapd_drv_sta_deauth(hapd, sta->addr,
 956                                WLAN_REASON_PREV_AUTH_NOT_VALID);
 957         ap_sta_deauthenticate(hapd, sta, WLAN_REASON_PREV_AUTH_NOT_VALID);
 958
 959         return RADIUS_DAS_SUCCESS;
 960 }
 961
 962
 963 #ifdef CONFIG_HS20
 964 static enum radius_das_res
 965 hostapd_das_coa(void *ctx, struct radius_das_attrs *attr)
 966 {
 967         struct hostapd_data *hapd = ctx;
 968         struct sta_info *sta;
 969         int multi;
 970
 971         if (hostapd_das_nas_mismatch(hapd, attr))
 972                 return RADIUS_DAS_NAS_MISMATCH;
 973
 974         sta = hostapd_das_find_sta(hapd, attr, &multi);
 975         if (!sta) {
 976                 if (multi) {
 977                         wpa_printf(MSG_DEBUG,
 978                                    "RADIUS DAS: Multiple sessions match - not supported");
 979                         return RADIUS_DAS_MULTI_SESSION_MATCH;
 980                 }
 981                 wpa_printf(MSG_DEBUG, "RADIUS DAS: No matching session found");
 982                 return RADIUS_DAS_SESSION_NOT_FOUND;
 983         }
 984
 985         wpa_printf(MSG_DEBUG, "RADIUS DAS: Found a matching session " MACSTR
 986                    " - CoA", MAC2STR(sta->addr));
 987
 988         if (attr->hs20_t_c_filtering) {
 989                 if (attr->hs20_t_c_filtering[0] & BIT(0)) {
 990                         wpa_printf(MSG_DEBUG,
 991                                    "HS 2.0: Unexpected Terms and Conditions filtering required in CoA-Request");
 992                         return RADIUS_DAS_COA_FAILED;
 993                 }
 994
 995                 hs20_t_c_filtering(hapd, sta, 0);
 996         }
 997
 998         return RADIUS_DAS_SUCCESS;
 999 }
1000 #else /* CONFIG_HS20 */
1001 #define hostapd_das_coa NULL
1002 #endif /* CONFIG_HS20 */
1003
1004 #endif /* CONFIG_NO_RADIUS */
1005
1006
1007 /**
1008  * hostapd_setup_bss - Per-BSS setup (initialization)
1009  * @hapd: Pointer to BSS data
1010  * @first: Whether this BSS is the first BSS of an interface; -1 = not first,
1011  *      but interface may exist
1012  *
1013  * This function is used to initialize all per-BSS data structures and
1014  * resources. This gets called in a loop for each BSS when an interface is
1015  * initialized. Most of the modules that are initialized here will be
1016  * deinitialized in hostapd_cleanup().
1017  */
1018 static int hostapd_setup_bss(struct hostapd_data *hapd, int first)
1019 {
1020         struct hostapd_bss_config *conf = hapd->conf;
1021         u8 ssid[SSID_MAX_LEN + 1];
1022         int ssid_len, set_ssid;
1023         char force_ifname[IFNAMSIZ];
1024         u8 if_addr[ETH_ALEN];
1025         int flush_old_stations = 1;
1026
1027         wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s), first=%d)",
1028                    __func__, hapd, conf->iface, first);
1029
1030 #ifdef EAP_SERVER_TNC
1031         if (conf->tnc && tncs_global_init() < 0) {
1032                 wpa_printf(MSG_ERROR, "Failed to initialize TNCS");
1033                 return -1;
1034         }
1035 #endif /* EAP_SERVER_TNC */
1036
1037         if (hapd->started) {
1038                 wpa_printf(MSG_ERROR, "%s: Interface %s was already started",
1039                            __func__, conf->iface);
1040                 return -1;
1041         }
1042         hapd->started = 1;
1043
1044         if (!first || first == -1) {
1045                 u8 *addr = hapd->own_addr;
1046
1047                 if (!is_zero_ether_addr(conf->bssid)) {
1048                         /* Allocate the configured BSSID. */
1049                         os_memcpy(hapd->own_addr, conf->bssid, ETH_ALEN);
1050
1051                         if (hostapd_mac_comp(hapd->own_addr,
1052                                              hapd->iface->bss[0]->own_addr) ==
1053                             0) {
1054                                 wpa_printf(MSG_ERROR, "BSS '%s' may not have "
1055                                            "BSSID set to the MAC address of "
1056                                            "the radio", conf->iface);
1057                                 return -1;
1058                         }
1059                 } else if (hapd->iconf->use_driver_iface_addr) {
1060                         addr = NULL;
1061                 } else {
1062                         /* Allocate the next available BSSID. */
1063                         do {
1064                                 inc_byte_array(hapd->own_addr, ETH_ALEN);
1065                         } while (mac_in_conf(hapd->iconf, hapd->own_addr));
1066                 }
1067
1068                 hapd->interface_added = 1;
1069                 if (hostapd_if_add(hapd->iface->bss[0], WPA_IF_AP_BSS,
1070                                    conf->iface, addr, hapd,
1071                                    &hapd->drv_priv, force_ifname, if_addr,
1072                                    conf->bridge[0] ? conf->bridge : NULL,
1073                                    first == -1)) {
1074                         wpa_printf(MSG_ERROR, "Failed to add BSS (BSSID="
1075                                    MACSTR ")", MAC2STR(hapd->own_addr));
1076                         hapd->interface_added = 0;
1077                         return -1;
1078                 }
1079
1080                 if (!addr)
1081                         os_memcpy(hapd->own_addr, if_addr, ETH_ALEN);
1082         }
1083
1084         if (conf->wmm_enabled < 0)
1085                 conf->wmm_enabled = hapd->iconf->ieee80211n;
1086
1087 #ifdef CONFIG_IEEE80211R_AP
1088         if (is_zero_ether_addr(conf->r1_key_holder))
1089                 os_memcpy(conf->r1_key_holder, hapd->own_addr, ETH_ALEN);
1090 #endif /* CONFIG_IEEE80211R_AP */
1091
1092 #ifdef CONFIG_MESH
1093         if ((hapd->conf->mesh & MESH_ENABLED) && hapd->iface->mconf == NULL)
1094                 flush_old_stations = 0;
1095 #endif /* CONFIG_MESH */
1096
1097         if (flush_old_stations)
1098                 hostapd_flush_old_stations(hapd,
1099                                            WLAN_REASON_PREV_AUTH_NOT_VALID);
1100         hostapd_set_privacy(hapd, 0);
1101
1102         hostapd_broadcast_wep_clear(hapd);
1103         if (hostapd_setup_encryption(conf->iface, hapd))
1104                 return -1;
1105
1106         /*
1107          * Fetch the SSID from the system and use it or,
1108          * if one was specified in the config file, verify they
1109          * match.
1110          */
1111         ssid_len = hostapd_get_ssid(hapd, ssid, sizeof(ssid));
1112         if (ssid_len < 0) {
1113                 wpa_printf(MSG_ERROR, "Could not read SSID from system");
1114                 return -1;
1115         }
1116         if (conf->ssid.ssid_set) {
1117                 /*
1118                  * If SSID is specified in the config file and it differs
1119                  * from what is being used then force installation of the
1120                  * new SSID.
1121                  */
1122                 set_ssid = (conf->ssid.ssid_len != (size_t) ssid_len ||
1123                             os_memcmp(conf->ssid.ssid, ssid, ssid_len) != 0);
1124         } else {
1125                 /*
1126                  * No SSID in the config file; just use the one we got
1127                  * from the system.
1128                  */
1129                 set_ssid = 0;
1130                 conf->ssid.ssid_len = ssid_len;
1131                 os_memcpy(conf->ssid.ssid, ssid, conf->ssid.ssid_len);
1132         }
1133
1134         if (!hostapd_drv_none(hapd)) {
1135                 wpa_printf(MSG_ERROR, "Using interface %s with hwaddr " MACSTR
1136                            " and ssid \"%s\"",
1137                            conf->iface, MAC2STR(hapd->own_addr),
1138                            wpa_ssid_txt(conf->ssid.ssid, conf->ssid.ssid_len));
1139         }
1140
1141         if (hostapd_setup_wpa_psk(conf)) {
1142                 wpa_printf(MSG_ERROR, "WPA-PSK setup failed.");
1143                 return -1;
1144         }
1145
1146         /* Set SSID for the kernel driver (to be used in beacon and probe
1147          * response frames) */
1148         if (set_ssid && hostapd_set_ssid(hapd, conf->ssid.ssid,
1149                                          conf->ssid.ssid_len)) {
1150                 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
1151                 return -1;
1152         }
1153
1154         if (wpa_debug_level <= MSG_MSGDUMP)
1155                 conf->radius->msg_dumps = 1;
1156 #ifndef CONFIG_NO_RADIUS
1157         hapd->radius = radius_client_init(hapd, conf->radius);
1158         if (hapd->radius == NULL) {
1159                 wpa_printf(MSG_ERROR, "RADIUS client initialization failed.");
1160                 return -1;
1161         }
1162
1163         if (conf->radius_das_port) {
1164                 struct radius_das_conf das_conf;
1165                 os_memset(&das_conf, 0, sizeof(das_conf));
1166                 das_conf.port = conf->radius_das_port;
1167                 das_conf.shared_secret = conf->radius_das_shared_secret;
1168                 das_conf.shared_secret_len =
1169                         conf->radius_das_shared_secret_len;
1170                 das_conf.client_addr = &conf->radius_das_client_addr;
1171                 das_conf.time_window = conf->radius_das_time_window;
1172                 das_conf.require_event_timestamp =
1173                         conf->radius_das_require_event_timestamp;
1174                 das_conf.require_message_authenticator =
1175                         conf->radius_das_require_message_authenticator;
1176                 das_conf.ctx = hapd;
1177                 das_conf.disconnect = hostapd_das_disconnect;
1178                 das_conf.coa = hostapd_das_coa;
1179                 hapd->radius_das = radius_das_init(&das_conf);
1180                 if (hapd->radius_das == NULL) {
1181                         wpa_printf(MSG_ERROR, "RADIUS DAS initialization "
1182                                    "failed.");
1183                         return -1;
1184                 }
1185         }
1186 #endif /* CONFIG_NO_RADIUS */
1187
1188         if (hostapd_acl_init(hapd)) {
1189                 wpa_printf(MSG_ERROR, "ACL initialization failed.");
1190                 return -1;
1191         }
1192         if (hostapd_init_wps(hapd, conf))
1193                 return -1;
1194
1195 #ifdef CONFIG_DPP
1196         hapd->gas = gas_query_ap_init(hapd, hapd->msg_ctx);
1197         if (!hapd->gas)
1198                 return -1;
1199         if (hostapd_dpp_init(hapd))
1200                 return -1;
1201 #endif /* CONFIG_DPP */
1202
1203         if (authsrv_init(hapd) < 0)
1204                 return -1;
1205
1206         if (ieee802_1x_init(hapd)) {
1207                 wpa_printf(MSG_ERROR, "IEEE 802.1X initialization failed.");
1208                 return -1;
1209         }
1210
1211         if ((conf->wpa || conf->osen) && hostapd_setup_wpa(hapd))
1212                 return -1;
1213
1214         if (accounting_init(hapd)) {
1215                 wpa_printf(MSG_ERROR, "Accounting initialization failed.");
1216                 return -1;
1217         }
1218
1219         if (conf->ieee802_11f &&
1220             (hapd->iapp = iapp_init(hapd, conf->iapp_iface)) == NULL) {
1221                 wpa_printf(MSG_ERROR, "IEEE 802.11F (IAPP) initialization "
1222                            "failed.");
1223                 return -1;
1224         }
1225
1226 #ifdef CONFIG_INTERWORKING
1227         if (gas_serv_init(hapd)) {
1228                 wpa_printf(MSG_ERROR, "GAS server initialization failed");
1229                 return -1;
1230         }
1231
1232         if (conf->qos_map_set_len &&
1233             hostapd_drv_set_qos_map(hapd, conf->qos_map_set,
1234                                     conf->qos_map_set_len)) {
1235                 wpa_printf(MSG_ERROR, "Failed to initialize QoS Map");
1236                 return -1;
1237         }
1238 #endif /* CONFIG_INTERWORKING */
1239
1240         if (conf->bss_load_update_period && bss_load_update_init(hapd)) {
1241                 wpa_printf(MSG_ERROR, "BSS Load initialization failed");
1242                 return -1;
1243         }
1244
1245         if (conf->proxy_arp) {
1246                 if (x_snoop_init(hapd)) {
1247                         wpa_printf(MSG_ERROR,
1248                                    "Generic snooping infrastructure initialization failed");
1249                         return -1;
1250                 }
1251
1252                 if (dhcp_snoop_init(hapd)) {
1253                         wpa_printf(MSG_ERROR,
1254                                    "DHCP snooping initialization failed");
1255                         return -1;
1256                 }
1257
1258                 if (ndisc_snoop_init(hapd)) {
1259                         wpa_printf(MSG_ERROR,
1260                                    "Neighbor Discovery snooping initialization failed");
1261                         return -1;
1262                 }
1263         }
1264
1265         if (!hostapd_drv_none(hapd) && vlan_init(hapd)) {
1266                 wpa_printf(MSG_ERROR, "VLAN initialization failed.");
1267                 return -1;
1268         }
1269
1270         if (!conf->start_disabled && ieee802_11_set_beacon(hapd) < 0)
1271                 return -1;
1272
1273         if (hapd->wpa_auth && wpa_init_keys(hapd->wpa_auth) < 0)
1274                 return -1;
1275
1276         if (hapd->driver && hapd->driver->set_operstate)
1277                 hapd->driver->set_operstate(hapd->drv_priv, 1);
1278
1279         return 0;
1280 }
1281
1282
1283 static void hostapd_tx_queue_params(struct hostapd_iface *iface)
1284 {
1285         struct hostapd_data *hapd = iface->bss[0];
1286         int i;
1287         struct hostapd_tx_queue_params *p;
1288
1289 #ifdef CONFIG_MESH
1290         if ((hapd->conf->mesh & MESH_ENABLED) && iface->mconf == NULL)
1291                 return;
1292 #endif /* CONFIG_MESH */
1293
1294         for (i = 0; i < NUM_TX_QUEUES; i++) {
1295                 p = &iface->conf->tx_queue[i];
1296
1297                 if (hostapd_set_tx_queue_params(hapd, i, p->aifs, p->cwmin,
1298                                                 p->cwmax, p->burst)) {
1299                         wpa_printf(MSG_DEBUG, "Failed to set TX queue "
1300                                    "parameters for queue %d.", i);
1301                         /* Continue anyway */
1302                 }
1303         }
1304 }
1305
1306
1307 static int hostapd_set_acl_list(struct hostapd_data *hapd,
1308                                 struct mac_acl_entry *mac_acl,
1309                                 int n_entries, u8 accept_acl)
1310 {
1311         struct hostapd_acl_params *acl_params;
1312         int i, err;
1313
1314         acl_params = os_zalloc(sizeof(*acl_params) +
1315                                (n_entries * sizeof(acl_params->mac_acl[0])));
1316         if (!acl_params)
1317                 return -ENOMEM;
1318
1319         for (i = 0; i < n_entries; i++)
1320                 os_memcpy(acl_params->mac_acl[i].addr, mac_acl[i].addr,
1321                           ETH_ALEN);
1322
1323         acl_params->acl_policy = accept_acl;
1324         acl_params->num_mac_acl = n_entries;
1325
1326         err = hostapd_drv_set_acl(hapd, acl_params);
1327
1328         os_free(acl_params);
1329
1330         return err;
1331 }
1332
1333
1334 static void hostapd_set_acl(struct hostapd_data *hapd)
1335 {
1336         struct hostapd_config *conf = hapd->iconf;
1337         int err;
1338         u8 accept_acl;
1339
1340         if (hapd->iface->drv_max_acl_mac_addrs == 0)
1341                 return;
1342
1343         if (conf->bss[0]->macaddr_acl == DENY_UNLESS_ACCEPTED) {
1344                 accept_acl = 1;
1345                 err = hostapd_set_acl_list(hapd, conf->bss[0]->accept_mac,
1346                                            conf->bss[0]->num_accept_mac,
1347                                            accept_acl);
1348                 if (err) {
1349                         wpa_printf(MSG_DEBUG, "Failed to set accept acl");
1350                         return;
1351                 }
1352         } else if (conf->bss[0]->macaddr_acl == ACCEPT_UNLESS_DENIED) {
1353                 accept_acl = 0;
1354                 err = hostapd_set_acl_list(hapd, conf->bss[0]->deny_mac,
1355                                            conf->bss[0]->num_deny_mac,
1356                                            accept_acl);
1357                 if (err) {
1358                         wpa_printf(MSG_DEBUG, "Failed to set deny acl");
1359                         return;
1360                 }
1361         }
1362 }
1363
1364
1365 static int start_ctrl_iface_bss(struct hostapd_data *hapd)
1366 {
1367         if (!hapd->iface->interfaces ||
1368             !hapd->iface->interfaces->ctrl_iface_init)
1369                 return 0;
1370
1371         if (hapd->iface->interfaces->ctrl_iface_init(hapd)) {
1372                 wpa_printf(MSG_ERROR,
1373                            "Failed to setup control interface for %s",
1374                            hapd->conf->iface);
1375                 return -1;
1376         }
1377
1378         return 0;
1379 }
1380
1381
1382 static int start_ctrl_iface(struct hostapd_iface *iface)
1383 {
1384         size_t i;
1385
1386         if (!iface->interfaces || !iface->interfaces->ctrl_iface_init)
1387                 return 0;
1388
1389         for (i = 0; i < iface->num_bss; i++) {
1390                 struct hostapd_data *hapd = iface->bss[i];
1391                 if (iface->interfaces->ctrl_iface_init(hapd)) {
1392                         wpa_printf(MSG_ERROR,
1393                                    "Failed to setup control interface for %s",
1394                                    hapd->conf->iface);
1395                         return -1;
1396                 }
1397         }
1398
1399         return 0;
1400 }
1401
1402
1403 static void channel_list_update_timeout(void *eloop_ctx, void *timeout_ctx)
1404 {
1405         struct hostapd_iface *iface = eloop_ctx;
1406
1407         if (!iface->wait_channel_update) {
1408                 wpa_printf(MSG_INFO, "Channel list update timeout, but interface was not waiting for it");
1409                 return;
1410         }
1411
1412         /*
1413          * It is possible that the existing channel list is acceptable, so try
1414          * to proceed.
1415          */
1416         wpa_printf(MSG_DEBUG, "Channel list update timeout - try to continue anyway");
1417         setup_interface2(iface);
1418 }
1419
1420
1421 void hostapd_channel_list_updated(struct hostapd_iface *iface, int initiator)
1422 {
1423         if (!iface->wait_channel_update || initiator != REGDOM_SET_BY_USER)
1424                 return;
1425
1426         wpa_printf(MSG_DEBUG, "Channel list updated - continue setup");
1427         eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
1428         setup_interface2(iface);
1429 }
1430
1431
1432 static int setup_interface(struct hostapd_iface *iface)
1433 {
1434         struct hostapd_data *hapd = iface->bss[0];
1435         size_t i;
1436
1437         /*
1438          * It is possible that setup_interface() is called after the interface
1439          * was disabled etc., in which case driver_ap_teardown is possibly set
1440          * to 1. Clear it here so any other key/station deletion, which is not
1441          * part of a teardown flow, would also call the relevant driver
1442          * callbacks.
1443          */
1444         iface->driver_ap_teardown = 0;
1445
1446         if (!iface->phy[0]) {
1447                 const char *phy = hostapd_drv_get_radio_name(hapd);
1448                 if (phy) {
1449                         wpa_printf(MSG_DEBUG, "phy: %s", phy);
1450                         os_strlcpy(iface->phy, phy, sizeof(iface->phy));
1451                 }
1452         }
1453
1454         /*
1455          * Make sure that all BSSes get configured with a pointer to the same
1456          * driver interface.
1457          */
1458         for (i = 1; i < iface->num_bss; i++) {
1459                 iface->bss[i]->driver = hapd->driver;
1460                 iface->bss[i]->drv_priv = hapd->drv_priv;
1461         }
1462
1463         if (hostapd_validate_bssid_configuration(iface))
1464                 return -1;
1465
1466         /*
1467          * Initialize control interfaces early to allow external monitoring of
1468          * channel setup operations that may take considerable amount of time
1469          * especially for DFS cases.
1470          */
1471         if (start_ctrl_iface(iface))
1472                 return -1;
1473
1474         if (hapd->iconf->country[0] && hapd->iconf->country[1]) {
1475                 char country[4], previous_country[4];
1476
1477                 hostapd_set_state(iface, HAPD_IFACE_COUNTRY_UPDATE);
1478                 if (hostapd_get_country(hapd, previous_country) < 0)
1479                         previous_country[0] = '\0';
1480
1481                 os_memcpy(country, hapd->iconf->country, 3);
1482                 country[3] = '\0';
1483                 if (hostapd_set_country(hapd, country) < 0) {
1484                         wpa_printf(MSG_ERROR, "Failed to set country code");
1485                         return -1;
1486                 }
1487
1488                 wpa_printf(MSG_DEBUG, "Previous country code %s, new country code %s",
1489                            previous_country, country);
1490
1491                 if (os_strncmp(previous_country, country, 2) != 0) {
1492                         wpa_printf(MSG_DEBUG, "Continue interface setup after channel list update");
1493                         iface->wait_channel_update = 1;
1494                         eloop_register_timeout(5, 0,
1495                                                channel_list_update_timeout,
1496                                                iface, NULL);
1497                         return 0;
1498                 }
1499         }
1500
1501         return setup_interface2(iface);
1502 }
1503
1504
1505 static int setup_interface2(struct hostapd_iface *iface)
1506 {
1507         iface->wait_channel_update = 0;
1508
1509         if (hostapd_get_hw_features(iface)) {
1510                 /* Not all drivers support this yet, so continue without hw
1511                  * feature data. */
1512         } else {
1513                 int ret = hostapd_select_hw_mode(iface);
1514                 if (ret < 0) {
1515                         wpa_printf(MSG_ERROR, "Could not select hw_mode and "
1516                                    "channel. (%d)", ret);
1517                         goto fail;
1518                 }
1519                 if (ret == 1) {
1520                         wpa_printf(MSG_DEBUG, "Interface initialization will be completed in a callback (ACS)");
1521                         return 0;
1522                 }
1523                 ret = hostapd_check_ht_capab(iface);
1524                 if (ret < 0)
1525                         goto fail;
1526                 if (ret == 1) {
1527                         wpa_printf(MSG_DEBUG, "Interface initialization will "
1528                                    "be completed in a callback");
1529                         return 0;
1530                 }
1531
1532                 if (iface->conf->ieee80211h)
1533                         wpa_printf(MSG_DEBUG, "DFS support is enabled");
1534         }
1535         return hostapd_setup_interface_complete(iface, 0);
1536
1537 fail:
1538         hostapd_set_state(iface, HAPD_IFACE_DISABLED);
1539         wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
1540         if (iface->interfaces && iface->interfaces->terminate_on_error)
1541                 eloop_terminate();
1542         return -1;
1543 }
1544
1545
1546 #ifdef CONFIG_FST
1547
1548 static const u8 * fst_hostapd_get_bssid_cb(void *ctx)
1549 {
1550         struct hostapd_data *hapd = ctx;
1551
1552         return hapd->own_addr;
1553 }
1554
1555
1556 static void fst_hostapd_get_channel_info_cb(void *ctx,
1557                                             enum hostapd_hw_mode *hw_mode,
1558                                             u8 *channel)
1559 {
1560         struct hostapd_data *hapd = ctx;
1561
1562         *hw_mode = ieee80211_freq_to_chan(hapd->iface->freq, channel);
1563 }
1564
1565
1566 static void fst_hostapd_set_ies_cb(void *ctx, const struct wpabuf *fst_ies)
1567 {
1568         struct hostapd_data *hapd = ctx;
1569
1570         if (hapd->iface->fst_ies != fst_ies) {
1571                 hapd->iface->fst_ies = fst_ies;
1572                 if (ieee802_11_set_beacon(hapd))
1573                         wpa_printf(MSG_WARNING, "FST: Cannot set beacon");
1574         }
1575 }
1576
1577
1578 static int fst_hostapd_send_action_cb(void *ctx, const u8 *da,
1579                                       struct wpabuf *buf)
1580 {
1581         struct hostapd_data *hapd = ctx;
1582
1583         return hostapd_drv_send_action(hapd, hapd->iface->freq, 0, da,
1584                                        wpabuf_head(buf), wpabuf_len(buf));
1585 }
1586
1587
1588 static const struct wpabuf * fst_hostapd_get_mb_ie_cb(void *ctx, const u8 *addr)
1589 {
1590         struct hostapd_data *hapd = ctx;
1591         struct sta_info *sta = ap_get_sta(hapd, addr);
1592
1593         return sta ? sta->mb_ies : NULL;
1594 }
1595
1596
1597 static void fst_hostapd_update_mb_ie_cb(void *ctx, const u8 *addr,
1598                                         const u8 *buf, size_t size)
1599 {
1600         struct hostapd_data *hapd = ctx;
1601         struct sta_info *sta = ap_get_sta(hapd, addr);
1602
1603         if (sta) {
1604                 struct mb_ies_info info;
1605
1606                 if (!mb_ies_info_by_ies(&info, buf, size)) {
1607                         wpabuf_free(sta->mb_ies);
1608                         sta->mb_ies = mb_ies_by_info(&info);
1609                 }
1610         }
1611 }
1612
1613
1614 static const u8 * fst_hostapd_get_sta(struct fst_get_peer_ctx **get_ctx,
1615                                       Boolean mb_only)
1616 {
1617         struct sta_info *s = (struct sta_info *) *get_ctx;
1618
1619         if (mb_only) {
1620                 for (; s && !s->mb_ies; s = s->next)
1621                         ;
1622         }
1623
1624         if (s) {
1625                 *get_ctx = (struct fst_get_peer_ctx *) s->next;
1626
1627                 return s->addr;
1628         }
1629
1630         *get_ctx = NULL;
1631         return NULL;
1632 }
1633
1634
1635 static const u8 * fst_hostapd_get_peer_first(void *ctx,
1636                                              struct fst_get_peer_ctx **get_ctx,
1637                                              Boolean mb_only)
1638 {
1639         struct hostapd_data *hapd = ctx;
1640
1641         *get_ctx = (struct fst_get_peer_ctx *) hapd->sta_list;
1642
1643         return fst_hostapd_get_sta(get_ctx, mb_only);
1644 }
1645
1646
1647 static const u8 * fst_hostapd_get_peer_next(void *ctx,
1648                                             struct fst_get_peer_ctx **get_ctx,
1649                                             Boolean mb_only)
1650 {
1651         return fst_hostapd_get_sta(get_ctx, mb_only);
1652 }
1653
1654
1655 void fst_hostapd_fill_iface_obj(struct hostapd_data *hapd,
1656                                 struct fst_wpa_obj *iface_obj)
1657 {
1658         iface_obj->ctx = hapd;
1659         iface_obj->get_bssid = fst_hostapd_get_bssid_cb;
1660         iface_obj->get_channel_info = fst_hostapd_get_channel_info_cb;
1661         iface_obj->set_ies = fst_hostapd_set_ies_cb;
1662         iface_obj->send_action = fst_hostapd_send_action_cb;
1663         iface_obj->get_mb_ie = fst_hostapd_get_mb_ie_cb;
1664         iface_obj->update_mb_ie = fst_hostapd_update_mb_ie_cb;
1665         iface_obj->get_peer_first = fst_hostapd_get_peer_first;
1666         iface_obj->get_peer_next = fst_hostapd_get_peer_next;
1667 }
1668
1669 #endif /* CONFIG_FST */
1670
1671
1672 #ifdef NEED_AP_MLME
1673 static enum nr_chan_width hostapd_get_nr_chan_width(struct hostapd_data *hapd,
1674                                                     int ht, int vht)
1675 {
1676         if (!ht && !vht)
1677                 return NR_CHAN_WIDTH_20;
1678         if (!hapd->iconf->secondary_channel)
1679                 return NR_CHAN_WIDTH_20;
1680         if (!vht || hapd->iconf->vht_oper_chwidth == VHT_CHANWIDTH_USE_HT)
1681                 return NR_CHAN_WIDTH_40;
1682         if (hapd->iconf->vht_oper_chwidth == VHT_CHANWIDTH_80MHZ)
1683                 return NR_CHAN_WIDTH_80;
1684         if (hapd->iconf->vht_oper_chwidth == VHT_CHANWIDTH_160MHZ)
1685                 return NR_CHAN_WIDTH_160;
1686         if (hapd->iconf->vht_oper_chwidth == VHT_CHANWIDTH_80P80MHZ)
1687                 return NR_CHAN_WIDTH_80P80;
1688         return NR_CHAN_WIDTH_20;
1689 }
1690 #endif /* NEED_AP_MLME */
1691
1692
1693 static void hostapd_set_own_neighbor_report(struct hostapd_data *hapd)
1694 {
1695 #ifdef NEED_AP_MLME
1696         u16 capab = hostapd_own_capab_info(hapd);
1697         int ht = hapd->iconf->ieee80211n && !hapd->conf->disable_11n;
1698         int vht = hapd->iconf->ieee80211ac && !hapd->conf->disable_11ac;
1699         struct wpa_ssid_value ssid;
1700         u8 channel, op_class;
1701         u8 center_freq1_idx = 0, center_freq2_idx = 0;
1702         enum nr_chan_width width;
1703         u32 bssid_info;
1704         struct wpabuf *nr;
1705
1706         if (!(hapd->conf->radio_measurements[0] &
1707               WLAN_RRM_CAPS_NEIGHBOR_REPORT))
1708                 return;
1709
1710         bssid_info = 3; /* AP is reachable */
1711         bssid_info |= NEI_REP_BSSID_INFO_SECURITY; /* "same as the AP" */
1712         bssid_info |= NEI_REP_BSSID_INFO_KEY_SCOPE; /* "same as the AP" */
1713
1714         if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT)
1715                 bssid_info |= NEI_REP_BSSID_INFO_SPECTRUM_MGMT;
1716
1717         bssid_info |= NEI_REP_BSSID_INFO_RM; /* RRM is supported */
1718
1719         if (hapd->conf->wmm_enabled) {
1720                 bssid_info |= NEI_REP_BSSID_INFO_QOS;
1721
1722                 if (hapd->conf->wmm_uapsd &&
1723                     (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_AP_UAPSD))
1724                         bssid_info |= NEI_REP_BSSID_INFO_APSD;
1725         }
1726
1727         if (ht) {
1728                 bssid_info |= NEI_REP_BSSID_INFO_HT |
1729                         NEI_REP_BSSID_INFO_DELAYED_BA;
1730
1731                 /* VHT bit added in IEEE P802.11-REVmc/D4.3 */
1732                 if (vht)
1733                         bssid_info |= NEI_REP_BSSID_INFO_VHT;
1734         }
1735
1736         /* TODO: Set NEI_REP_BSSID_INFO_MOBILITY_DOMAIN if MDE is set */
1737
1738         if (ieee80211_freq_to_channel_ext(hapd->iface->freq,
1739                                           hapd->iconf->secondary_channel,
1740                                           hapd->iconf->vht_oper_chwidth,
1741                                           &op_class, &channel) ==
1742             NUM_HOSTAPD_MODES)
1743                 return;
1744         width = hostapd_get_nr_chan_width(hapd, ht, vht);
1745         if (vht) {
1746                 center_freq1_idx = hapd->iconf->vht_oper_centr_freq_seg0_idx;
1747                 if (width == NR_CHAN_WIDTH_80P80)
1748                         center_freq2_idx =
1749                                 hapd->iconf->vht_oper_centr_freq_seg1_idx;
1750         } else if (ht) {
1751                 ieee80211_freq_to_chan(hapd->iface->freq +
1752                                        10 * hapd->iconf->secondary_channel,
1753                                        &center_freq1_idx);
1754         }
1755
1756         ssid.ssid_len = hapd->conf->ssid.ssid_len;
1757         os_memcpy(ssid.ssid, hapd->conf->ssid.ssid, ssid.ssid_len);
1758
1759         /*
1760          * Neighbor Report element size = BSSID + BSSID info + op_class + chan +
1761          * phy type + wide bandwidth channel subelement.
1762          */
1763         nr = wpabuf_alloc(ETH_ALEN + 4 + 1 + 1 + 1 + 5);
1764         if (!nr)
1765                 return;
1766
1767         wpabuf_put_data(nr, hapd->own_addr, ETH_ALEN);
1768         wpabuf_put_le32(nr, bssid_info);
1769         wpabuf_put_u8(nr, op_class);
1770         wpabuf_put_u8(nr, channel);
1771         wpabuf_put_u8(nr, ieee80211_get_phy_type(hapd->iface->freq, ht, vht));
1772
1773         /*
1774          * Wide Bandwidth Channel subelement may be needed to allow the
1775          * receiving STA to send packets to the AP. See IEEE P802.11-REVmc/D5.0
1776          * Figure 9-301.
1777          */
1778         wpabuf_put_u8(nr, WNM_NEIGHBOR_WIDE_BW_CHAN);
1779         wpabuf_put_u8(nr, 3);
1780         wpabuf_put_u8(nr, width);
1781         wpabuf_put_u8(nr, center_freq1_idx);
1782         wpabuf_put_u8(nr, center_freq2_idx);
1783
1784         hostapd_neighbor_set(hapd, hapd->own_addr, &ssid, nr, hapd->iconf->lci,
1785                              hapd->iconf->civic, hapd->iconf->stationary_ap);
1786
1787         wpabuf_free(nr);
1788 #endif /* NEED_AP_MLME */
1789 }
1790
1791
1792 #ifdef CONFIG_OWE
1793
1794 static int hostapd_owe_iface_iter(struct hostapd_iface *iface, void *ctx)
1795 {
1796         struct hostapd_data *hapd = ctx;
1797         size_t i;
1798
1799         for (i = 0; i < iface->num_bss; i++) {
1800                 struct hostapd_data *bss = iface->bss[i];
1801
1802                 if (os_strcmp(hapd->conf->owe_transition_ifname,
1803                               bss->conf->iface) != 0)
1804                         continue;
1805
1806                 wpa_printf(MSG_DEBUG,
1807                            "OWE: ifname=%s found transition mode ifname=%s BSSID "
1808                            MACSTR " SSID %s",
1809                            hapd->conf->iface, bss->conf->iface,
1810                            MAC2STR(bss->own_addr),
1811                            wpa_ssid_txt(bss->conf->ssid.ssid,
1812                                         bss->conf->ssid.ssid_len));
1813                 if (!bss->conf->ssid.ssid_set || !bss->conf->ssid.ssid_len ||
1814                     is_zero_ether_addr(bss->own_addr))
1815                         continue;
1816
1817                 os_memcpy(hapd->conf->owe_transition_bssid, bss->own_addr,
1818                           ETH_ALEN);
1819                 os_memcpy(hapd->conf->owe_transition_ssid,
1820                           bss->conf->ssid.ssid, bss->conf->ssid.ssid_len);
1821                 hapd->conf->owe_transition_ssid_len = bss->conf->ssid.ssid_len;
1822                 wpa_printf(MSG_DEBUG,
1823                            "OWE: Copied transition mode information");
1824                 return 1;
1825         }
1826
1827         return 0;
1828 }
1829
1830
1831 int hostapd_owe_trans_get_info(struct hostapd_data *hapd)
1832 {
1833         if (hapd->conf->owe_transition_ssid_len > 0 &&
1834             !is_zero_ether_addr(hapd->conf->owe_transition_bssid))
1835                 return 0;
1836
1837         /* Find transition mode SSID/BSSID information from a BSS operated by
1838          * this hostapd instance. */
1839         if (!hapd->iface->interfaces ||
1840             !hapd->iface->interfaces->for_each_interface)
1841                 return hostapd_owe_iface_iter(hapd->iface, hapd);
1842         else
1843                 return hapd->iface->interfaces->for_each_interface(
1844                         hapd->iface->interfaces, hostapd_owe_iface_iter, hapd);
1845 }
1846
1847
1848 static int hostapd_owe_iface_iter2(struct hostapd_iface *iface, void *ctx)
1849 {
1850         size_t i;
1851
1852         for (i = 0; i < iface->num_bss; i++) {
1853                 struct hostapd_data *bss = iface->bss[i];
1854                 int res;
1855
1856                 if (!bss->conf->owe_transition_ifname[0])
1857                         continue;
1858                 res = hostapd_owe_trans_get_info(bss);
1859                 if (res == 0)
1860                         continue;
1861                 wpa_printf(MSG_DEBUG,
1862                            "OWE: Matching transition mode interface enabled - update beacon data for %s",
1863                            bss->conf->iface);
1864                 ieee802_11_set_beacon(bss);
1865         }
1866
1867         return 0;
1868 }
1869
1870 #endif /* CONFIG_OWE */
1871
1872
1873 static void hostapd_owe_update_trans(struct hostapd_iface *iface)
1874 {
1875 #ifdef CONFIG_OWE
1876         /* Check whether the enabled BSS can complete OWE transition mode
1877          * configuration for any pending interface. */
1878         if (!iface->interfaces ||
1879             !iface->interfaces->for_each_interface)
1880                 hostapd_owe_iface_iter2(iface, NULL);
1881         else
1882                 iface->interfaces->for_each_interface(
1883                         iface->interfaces, hostapd_owe_iface_iter2, NULL);
1884 #endif /* CONFIG_OWE */
1885 }
1886
1887
1888 static void hostapd_interface_setup_failure_handler(void *eloop_ctx,
1889                                                     void *timeout_ctx)
1890 {
1891         struct hostapd_iface *iface = eloop_ctx;
1892         struct hostapd_data *hapd;
1893
1894         if (iface->num_bss < 1 || !iface->bss || !iface->bss[0])
1895                 return;
1896         hapd = iface->bss[0];
1897         if (hapd->setup_complete_cb)
1898                 hapd->setup_complete_cb(hapd->setup_complete_cb_ctx);
1899 }
1900
1901
1902 static int hostapd_setup_interface_complete_sync(struct hostapd_iface *iface,
1903                                                  int err)
1904 {
1905         struct hostapd_data *hapd = iface->bss[0];
1906         size_t j;
1907         u8 *prev_addr;
1908         int delay_apply_cfg = 0;
1909         int res_dfs_offload = 0;
1910
1911         if (err)
1912                 goto fail;
1913
1914         wpa_printf(MSG_DEBUG, "Completing interface initialization");
1915         if (iface->conf->channel) {
1916 #ifdef NEED_AP_MLME
1917                 int res;
1918 #endif /* NEED_AP_MLME */
1919
1920                 iface->freq = hostapd_hw_get_freq(hapd, iface->conf->channel);
1921                 wpa_printf(MSG_DEBUG, "Mode: %s  Channel: %d  "
1922                            "Frequency: %d MHz",
1923                            hostapd_hw_mode_txt(iface->conf->hw_mode),
1924                            iface->conf->channel, iface->freq);
1925
1926 #ifdef NEED_AP_MLME
1927                 /* Handle DFS only if it is not offloaded to the driver */
1928                 if (!(iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD)) {
1929                         /* Check DFS */
1930                         res = hostapd_handle_dfs(iface);
1931                         if (res <= 0) {
1932                                 if (res < 0)
1933                                         goto fail;
1934                                 return res;
1935                         }
1936                 } else {
1937                         /* If DFS is offloaded to the driver */
1938                         res_dfs_offload = hostapd_handle_dfs_offload(iface);
1939                         if (res_dfs_offload <= 0) {
1940                                 if (res_dfs_offload < 0)
1941                                         goto fail;
1942                         } else {
1943                                 wpa_printf(MSG_DEBUG,
1944                                            "Proceed with AP/channel setup");
1945                                 /*
1946                                  * If this is a DFS channel, move to completing
1947                                  * AP setup.
1948                                  */
1949                                 if (res_dfs_offload == 1)
1950                                         goto dfs_offload;
1951                                 /* Otherwise fall through. */
1952                         }
1953                 }
1954 #endif /* NEED_AP_MLME */
1955
1956 #ifdef CONFIG_MESH
1957                 if (iface->mconf != NULL) {
1958                         wpa_printf(MSG_DEBUG,
1959                                    "%s: Mesh configuration will be applied while joining the mesh network",
1960                                    iface->bss[0]->conf->iface);
1961                         delay_apply_cfg = 1;
1962                 }
1963 #endif /* CONFIG_MESH */
1964
1965                 if (!delay_apply_cfg &&
1966                     hostapd_set_freq(hapd, hapd->iconf->hw_mode, iface->freq,
1967                                      hapd->iconf->channel,
1968                                      hapd->iconf->ieee80211n,
1969                                      hapd->iconf->ieee80211ac,
1970                                      hapd->iconf->secondary_channel,
1971                                      hapd->iconf->vht_oper_chwidth,
1972                                      hapd->iconf->vht_oper_centr_freq_seg0_idx,
1973                                      hapd->iconf->vht_oper_centr_freq_seg1_idx)) {
1974                         wpa_printf(MSG_ERROR, "Could not set channel for "
1975                                    "kernel driver");
1976                         goto fail;
1977                 }
1978         }
1979
1980         if (iface->current_mode) {
1981                 if (hostapd_prepare_rates(iface, iface->current_mode)) {
1982                         wpa_printf(MSG_ERROR, "Failed to prepare rates "
1983                                    "table.");
1984                         hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
1985                                        HOSTAPD_LEVEL_WARNING,
1986                                        "Failed to prepare rates table.");
1987                         goto fail;
1988                 }
1989         }
1990
1991         if (hapd->iconf->rts_threshold > -1 &&
1992             hostapd_set_rts(hapd, hapd->iconf->rts_threshold)) {
1993                 wpa_printf(MSG_ERROR, "Could not set RTS threshold for "
1994                            "kernel driver");
1995                 goto fail;
1996         }
1997
1998         if (hapd->iconf->fragm_threshold > -1 &&
1999             hostapd_set_frag(hapd, hapd->iconf->fragm_threshold)) {
2000                 wpa_printf(MSG_ERROR, "Could not set fragmentation threshold "
2001                            "for kernel driver");
2002                 goto fail;
2003         }
2004
2005         prev_addr = hapd->own_addr;
2006
2007         for (j = 0; j < iface->num_bss; j++) {
2008                 hapd = iface->bss[j];
2009                 if (j)
2010                         os_memcpy(hapd->own_addr, prev_addr, ETH_ALEN);
2011                 if (hostapd_setup_bss(hapd, j == 0)) {
2012                         do {
2013                                 hapd = iface->bss[j];
2014                                 hostapd_bss_deinit_no_free(hapd);
2015                                 hostapd_free_hapd_data(hapd);
2016                         } while (j-- > 0);
2017                         goto fail;
2018                 }
2019                 if (is_zero_ether_addr(hapd->conf->bssid))
2020                         prev_addr = hapd->own_addr;
2021         }
2022         hapd = iface->bss[0];
2023
2024         hostapd_tx_queue_params(iface);
2025
2026         ap_list_init(iface);
2027
2028         hostapd_set_acl(hapd);
2029
2030         if (hostapd_driver_commit(hapd) < 0) {
2031                 wpa_printf(MSG_ERROR, "%s: Failed to commit driver "
2032                            "configuration", __func__);
2033                 goto fail;
2034         }
2035
2036         /*
2037          * WPS UPnP module can be initialized only when the "upnp_iface" is up.
2038          * If "interface" and "upnp_iface" are the same (e.g., non-bridge
2039          * mode), the interface is up only after driver_commit, so initialize
2040          * WPS after driver_commit.
2041          */
2042         for (j = 0; j < iface->num_bss; j++) {
2043                 if (hostapd_init_wps_complete(iface->bss[j]))
2044                         goto fail;
2045         }
2046
2047         if ((iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
2048             !res_dfs_offload) {
2049                 /*
2050                  * If freq is DFS, and DFS is offloaded to the driver, then wait
2051                  * for CAC to complete.
2052                  */
2053                 wpa_printf(MSG_DEBUG, "%s: Wait for CAC to complete", __func__);
2054                 return res_dfs_offload;
2055         }
2056
2057 #ifdef NEED_AP_MLME
2058 dfs_offload:
2059 #endif /* NEED_AP_MLME */
2060
2061 #ifdef CONFIG_FST
2062         if (hapd->iconf->fst_cfg.group_id[0]) {
2063                 struct fst_wpa_obj iface_obj;
2064
2065                 fst_hostapd_fill_iface_obj(hapd, &iface_obj);
2066                 iface->fst = fst_attach(hapd->conf->iface, hapd->own_addr,
2067                                         &iface_obj, &hapd->iconf->fst_cfg);
2068                 if (!iface->fst) {
2069                         wpa_printf(MSG_ERROR, "Could not attach to FST %s",
2070                                    hapd->iconf->fst_cfg.group_id);
2071                         goto fail;
2072                 }
2073         }
2074 #endif /* CONFIG_FST */
2075
2076         hostapd_set_state(iface, HAPD_IFACE_ENABLED);
2077         hostapd_owe_update_trans(iface);
2078         wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_ENABLED);
2079         if (hapd->setup_complete_cb)
2080                 hapd->setup_complete_cb(hapd->setup_complete_cb_ctx);
2081
2082         wpa_printf(MSG_DEBUG, "%s: Setup of interface done.",
2083                    iface->bss[0]->conf->iface);
2084         if (iface->interfaces && iface->interfaces->terminate_on_error > 0)
2085                 iface->interfaces->terminate_on_error--;
2086
2087         for (j = 0; j < iface->num_bss; j++)
2088                 hostapd_set_own_neighbor_report(iface->bss[j]);
2089
2090         return 0;
2091
2092 fail:
2093         wpa_printf(MSG_ERROR, "Interface initialization failed");
2094         hostapd_set_state(iface, HAPD_IFACE_DISABLED);
2095         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
2096 #ifdef CONFIG_FST
2097         if (iface->fst) {
2098                 fst_detach(iface->fst);
2099                 iface->fst = NULL;
2100         }
2101 #endif /* CONFIG_FST */
2102
2103         if (iface->interfaces && iface->interfaces->terminate_on_error) {
2104                 eloop_terminate();
2105         } else if (hapd->setup_complete_cb) {
2106                 /*
2107                  * Calling hapd->setup_complete_cb directly may cause iface
2108                  * deinitialization which may be accessed later by the caller.
2109                  */
2110                 eloop_register_timeout(0, 0,
2111                                        hostapd_interface_setup_failure_handler,
2112                                        iface, NULL);
2113         }
2114
2115         return -1;
2116 }
2117
2118
2119 /**
2120  * hostapd_setup_interface_complete - Complete interface setup
2121  *
2122  * This function is called when previous steps in the interface setup has been
2123  * completed. This can also start operations, e.g., DFS, that will require
2124  * additional processing before interface is ready to be enabled. Such
2125  * operations will call this function from eloop callbacks when finished.
2126  */
2127 int hostapd_setup_interface_complete(struct hostapd_iface *iface, int err)
2128 {
2129         struct hapd_interfaces *interfaces = iface->interfaces;
2130         struct hostapd_data *hapd = iface->bss[0];
2131         unsigned int i;
2132         int not_ready_in_sync_ifaces = 0;
2133
2134         if (!iface->need_to_start_in_sync)
2135                 return hostapd_setup_interface_complete_sync(iface, err);
2136
2137         if (err) {
2138                 wpa_printf(MSG_ERROR, "Interface initialization failed");
2139                 hostapd_set_state(iface, HAPD_IFACE_DISABLED);
2140                 iface->need_to_start_in_sync = 0;
2141                 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
2142                 if (interfaces && interfaces->terminate_on_error)
2143                         eloop_terminate();
2144                 return -1;
2145         }
2146
2147         if (iface->ready_to_start_in_sync) {
2148                 /* Already in ready and waiting. should never happpen */
2149                 return 0;
2150         }
2151
2152         for (i = 0; i < interfaces->count; i++) {
2153                 if (interfaces->iface[i]->need_to_start_in_sync &&
2154                     !interfaces->iface[i]->ready_to_start_in_sync)
2155                         not_ready_in_sync_ifaces++;
2156         }
2157
2158         /*
2159          * Check if this is the last interface, if yes then start all the other
2160          * waiting interfaces. If not, add this interface to the waiting list.
2161          */
2162         if (not_ready_in_sync_ifaces > 1 && iface->state == HAPD_IFACE_DFS) {
2163                 /*
2164                  * If this interface went through CAC, do not synchronize, just
2165                  * start immediately.
2166                  */
2167                 iface->need_to_start_in_sync = 0;
2168                 wpa_printf(MSG_INFO,
2169                            "%s: Finished CAC - bypass sync and start interface",
2170                            iface->bss[0]->conf->iface);
2171                 return hostapd_setup_interface_complete_sync(iface, err);
2172         }
2173
2174         if (not_ready_in_sync_ifaces > 1) {
2175                 /* need to wait as there are other interfaces still coming up */
2176                 iface->ready_to_start_in_sync = 1;
2177                 wpa_printf(MSG_INFO,
2178                            "%s: Interface waiting to sync with other interfaces",
2179                            iface->bss[0]->conf->iface);
2180                 return 0;
2181         }
2182
2183         wpa_printf(MSG_INFO,
2184                    "%s: Last interface to sync - starting all interfaces",
2185                    iface->bss[0]->conf->iface);
2186         iface->need_to_start_in_sync = 0;
2187         hostapd_setup_interface_complete_sync(iface, err);
2188         for (i = 0; i < interfaces->count; i++) {
2189                 if (interfaces->iface[i]->need_to_start_in_sync &&
2190                     interfaces->iface[i]->ready_to_start_in_sync) {
2191                         hostapd_setup_interface_complete_sync(
2192                                 interfaces->iface[i], 0);
2193                         /* Only once the interfaces are sync started */
2194                         interfaces->iface[i]->need_to_start_in_sync = 0;
2195                 }
2196         }
2197
2198         return 0;
2199 }
2200
2201
2202 /**
2203  * hostapd_setup_interface - Setup of an interface
2204  * @iface: Pointer to interface data.
2205  * Returns: 0 on success, -1 on failure
2206  *
2207  * Initializes the driver interface, validates the configuration,
2208  * and sets driver parameters based on the configuration.
2209  * Flushes old stations, sets the channel, encryption,
2210  * beacons, and WDS links based on the configuration.
2211  *
2212  * If interface setup requires more time, e.g., to perform HT co-ex scans, ACS,
2213  * or DFS operations, this function returns 0 before such operations have been
2214  * completed. The pending operations are registered into eloop and will be
2215  * completed from eloop callbacks. Those callbacks end up calling
2216  * hostapd_setup_interface_complete() once setup has been completed.
2217  */
2218 int hostapd_setup_interface(struct hostapd_iface *iface)
2219 {
2220         int ret;
2221
2222         ret = setup_interface(iface);
2223         if (ret) {
2224                 wpa_printf(MSG_ERROR, "%s: Unable to setup interface.",
2225                            iface->bss[0]->conf->iface);
2226                 return -1;
2227         }
2228
2229         return 0;
2230 }
2231
2232
2233 /**
2234  * hostapd_alloc_bss_data - Allocate and initialize per-BSS data
2235  * @hapd_iface: Pointer to interface data
2236  * @conf: Pointer to per-interface configuration
2237  * @bss: Pointer to per-BSS configuration for this BSS
2238  * Returns: Pointer to allocated BSS data
2239  *
2240  * This function is used to allocate per-BSS data structure. This data will be
2241  * freed after hostapd_cleanup() is called for it during interface
2242  * deinitialization.
2243  */
2244 struct hostapd_data *
2245 hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface,
2246                        struct hostapd_config *conf,
2247                        struct hostapd_bss_config *bss)
2248 {
2249         struct hostapd_data *hapd;
2250
2251         hapd = os_zalloc(sizeof(*hapd));
2252         if (hapd == NULL)
2253                 return NULL;
2254
2255         hapd->new_assoc_sta_cb = hostapd_new_assoc_sta;
2256         hapd->iconf = conf;
2257         hapd->conf = bss;
2258         hapd->iface = hapd_iface;
2259         if (conf)
2260                 hapd->driver = conf->driver;
2261         hapd->ctrl_sock = -1;
2262         dl_list_init(&hapd->ctrl_dst);
2263         dl_list_init(&hapd->nr_db);
2264         hapd->dhcp_sock = -1;
2265 #ifdef CONFIG_IEEE80211R_AP
2266         dl_list_init(&hapd->l2_queue);
2267         dl_list_init(&hapd->l2_oui_queue);
2268 #endif /* CONFIG_IEEE80211R_AP */
2269
2270         return hapd;
2271 }
2272
2273
2274 static void hostapd_bss_deinit(struct hostapd_data *hapd)
2275 {
2276         if (!hapd)
2277                 return;
2278         wpa_printf(MSG_DEBUG, "%s: deinit bss %s", __func__,
2279                    hapd->conf->iface);
2280         hostapd_bss_deinit_no_free(hapd);
2281         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
2282         hostapd_cleanup(hapd);
2283 }
2284
2285
2286 void hostapd_interface_deinit(struct hostapd_iface *iface)
2287 {
2288         int j;
2289
2290         wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
2291         if (iface == NULL)
2292                 return;
2293
2294         hostapd_set_state(iface, HAPD_IFACE_DISABLED);
2295
2296         eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
2297         iface->wait_channel_update = 0;
2298
2299 #ifdef CONFIG_FST
2300         if (iface->fst) {
2301                 fst_detach(iface->fst);
2302                 iface->fst = NULL;
2303         }
2304 #endif /* CONFIG_FST */
2305
2306         for (j = iface->num_bss - 1; j >= 0; j--) {
2307                 if (!iface->bss)
2308                         break;
2309                 hostapd_bss_deinit(iface->bss[j]);
2310         }
2311
2312 #ifdef CONFIG_IEEE80211N
2313 #ifdef NEED_AP_MLME
2314         hostapd_stop_setup_timers(iface);
2315         eloop_cancel_timeout(ap_ht2040_timeout, iface, NULL);
2316 #endif /* NEED_AP_MLME */
2317 #endif /* CONFIG_IEEE80211N */
2318 }
2319
2320
2321 void hostapd_interface_free(struct hostapd_iface *iface)
2322 {
2323         size_t j;
2324         wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
2325         for (j = 0; j < iface->num_bss; j++) {
2326                 if (!iface->bss)
2327                         break;
2328                 wpa_printf(MSG_DEBUG, "%s: free hapd %p",
2329                            __func__, iface->bss[j]);
2330                 os_free(iface->bss[j]);
2331         }
2332         hostapd_cleanup_iface(iface);
2333 }
2334
2335
2336 struct hostapd_iface * hostapd_alloc_iface(void)
2337 {
2338         struct hostapd_iface *hapd_iface;
2339
2340         hapd_iface = os_zalloc(sizeof(*hapd_iface));
2341         if (!hapd_iface)
2342                 return NULL;
2343
2344         dl_list_init(&hapd_iface->sta_seen);
2345
2346         return hapd_iface;
2347 }
2348
2349
2350 /**
2351  * hostapd_init - Allocate and initialize per-interface data
2352  * @config_file: Path to the configuration file
2353  * Returns: Pointer to the allocated interface data or %NULL on failure
2354  *
2355  * This function is used to allocate main data structures for per-interface
2356  * data. The allocated data buffer will be freed by calling
2357  * hostapd_cleanup_iface().
2358  */
2359 struct hostapd_iface * hostapd_init(struct hapd_interfaces *interfaces,
2360                                     const char *config_file)
2361 {
2362         struct hostapd_iface *hapd_iface = NULL;
2363         struct hostapd_config *conf = NULL;
2364         struct hostapd_data *hapd;
2365         size_t i;
2366
2367         hapd_iface = hostapd_alloc_iface();
2368         if (hapd_iface == NULL)
2369                 goto fail;
2370
2371         hapd_iface->config_fname = os_strdup(config_file);
2372         if (hapd_iface->config_fname == NULL)
2373                 goto fail;
2374
2375         conf = interfaces->config_read_cb(hapd_iface->config_fname);
2376         if (conf == NULL)
2377                 goto fail;
2378         hapd_iface->conf = conf;
2379
2380         hapd_iface->num_bss = conf->num_bss;
2381         hapd_iface->bss = os_calloc(conf->num_bss,
2382                                     sizeof(struct hostapd_data *));
2383         if (hapd_iface->bss == NULL)
2384                 goto fail;
2385
2386         for (i = 0; i < conf->num_bss; i++) {
2387                 hapd = hapd_iface->bss[i] =
2388                         hostapd_alloc_bss_data(hapd_iface, conf,
2389                                                conf->bss[i]);
2390                 if (hapd == NULL)
2391                         goto fail;
2392                 hapd->msg_ctx = hapd;
2393         }
2394
2395         return hapd_iface;
2396
2397 fail:
2398         wpa_printf(MSG_ERROR, "Failed to set up interface with %s",
2399                    config_file);
2400         if (conf)
2401                 hostapd_config_free(conf);
2402         if (hapd_iface) {
2403                 os_free(hapd_iface->config_fname);
2404                 os_free(hapd_iface->bss);
2405                 wpa_printf(MSG_DEBUG, "%s: free iface %p",
2406                            __func__, hapd_iface);
2407                 os_free(hapd_iface);
2408         }
2409         return NULL;
2410 }
2411
2412
2413 static int ifname_in_use(struct hapd_interfaces *interfaces, const char *ifname)
2414 {
2415         size_t i, j;
2416
2417         for (i = 0; i < interfaces->count; i++) {
2418                 struct hostapd_iface *iface = interfaces->iface[i];
2419                 for (j = 0; j < iface->num_bss; j++) {
2420                         struct hostapd_data *hapd = iface->bss[j];
2421                         if (os_strcmp(ifname, hapd->conf->iface) == 0)
2422                                 return 1;
2423                 }
2424         }
2425
2426         return 0;
2427 }
2428
2429
2430 /**
2431  * hostapd_interface_init_bss - Read configuration file and init BSS data
2432  *
2433  * This function is used to parse configuration file for a BSS. This BSS is
2434  * added to an existing interface sharing the same radio (if any) or a new
2435  * interface is created if this is the first interface on a radio. This
2436  * allocate memory for the BSS. No actual driver operations are started.
2437  *
2438  * This is similar to hostapd_interface_init(), but for a case where the
2439  * configuration is used to add a single BSS instead of all BSSes for a radio.
2440  */
2441 struct hostapd_iface *
2442 hostapd_interface_init_bss(struct hapd_interfaces *interfaces, const char *phy,
2443                            const char *config_fname, int debug)
2444 {
2445         struct hostapd_iface *new_iface = NULL, *iface = NULL;
2446         struct hostapd_data *hapd;
2447         int k;
2448         size_t i, bss_idx;
2449
2450         if (!phy || !*phy)
2451                 return NULL;
2452
2453         for (i = 0; i < interfaces->count; i++) {
2454                 if (os_strcmp(interfaces->iface[i]->phy, phy) == 0) {
2455                         iface = interfaces->iface[i];
2456                         break;
2457                 }
2458         }
2459
2460         wpa_printf(MSG_INFO, "Configuration file: %s (phy %s)%s",
2461                    config_fname, phy, iface ? "" : " --> new PHY");
2462         if (iface) {
2463                 struct hostapd_config *conf;
2464                 struct hostapd_bss_config **tmp_conf;
2465                 struct hostapd_data **tmp_bss;
2466                 struct hostapd_bss_config *bss;
2467                 const char *ifname;
2468
2469                 /* Add new BSS to existing iface */
2470                 conf = interfaces->config_read_cb(config_fname);
2471                 if (conf == NULL)
2472                         return NULL;
2473                 if (conf->num_bss > 1) {
2474                         wpa_printf(MSG_ERROR, "Multiple BSSes specified in BSS-config");
2475                         hostapd_config_free(conf);
2476                         return NULL;
2477                 }
2478
2479                 ifname = conf->bss[0]->iface;
2480                 if (ifname[0] != '\0' && ifname_in_use(interfaces, ifname)) {
2481                         wpa_printf(MSG_ERROR,
2482                                    "Interface name %s already in use", ifname);
2483                         hostapd_config_free(conf);
2484                         return NULL;
2485                 }
2486
2487                 tmp_conf = os_realloc_array(
2488                         iface->conf->bss, iface->conf->num_bss + 1,
2489                         sizeof(struct hostapd_bss_config *));
2490                 tmp_bss = os_realloc_array(iface->bss, iface->num_bss + 1,
2491                                            sizeof(struct hostapd_data *));
2492                 if (tmp_bss)
2493                         iface->bss = tmp_bss;
2494                 if (tmp_conf) {
2495                         iface->conf->bss = tmp_conf;
2496                         iface->conf->last_bss = tmp_conf[0];
2497                 }
2498                 if (tmp_bss == NULL || tmp_conf == NULL) {
2499                         hostapd_config_free(conf);
2500                         return NULL;
2501                 }
2502                 bss = iface->conf->bss[iface->conf->num_bss] = conf->bss[0];
2503                 iface->conf->num_bss++;
2504
2505                 hapd = hostapd_alloc_bss_data(iface, iface->conf, bss);
2506                 if (hapd == NULL) {
2507                         iface->conf->num_bss--;
2508                         hostapd_config_free(conf);
2509                         return NULL;
2510                 }
2511                 iface->conf->last_bss = bss;
2512                 iface->bss[iface->num_bss] = hapd;
2513                 hapd->msg_ctx = hapd;
2514
2515                 bss_idx = iface->num_bss++;
2516                 conf->num_bss--;
2517                 conf->bss[0] = NULL;
2518                 hostapd_config_free(conf);
2519         } else {
2520                 /* Add a new iface with the first BSS */
2521                 new_iface = iface = hostapd_init(interfaces, config_fname);
2522                 if (!iface)
2523                         return NULL;
2524                 os_strlcpy(iface->phy, phy, sizeof(iface->phy));
2525                 iface->interfaces = interfaces;
2526                 bss_idx = 0;
2527         }
2528
2529         for (k = 0; k < debug; k++) {
2530                 if (iface->bss[bss_idx]->conf->logger_stdout_level > 0)
2531                         iface->bss[bss_idx]->conf->logger_stdout_level--;
2532         }
2533
2534         if (iface->conf->bss[bss_idx]->iface[0] == '\0' &&
2535             !hostapd_drv_none(iface->bss[bss_idx])) {
2536                 wpa_printf(MSG_ERROR, "Interface name not specified in %s",
2537                            config_fname);
2538                 if (new_iface)
2539                         hostapd_interface_deinit_free(new_iface);
2540                 return NULL;
2541         }
2542
2543         return iface;
2544 }
2545
2546
2547 void hostapd_interface_deinit_free(struct hostapd_iface *iface)
2548 {
2549         const struct wpa_driver_ops *driver;
2550         void *drv_priv;
2551
2552         wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
2553         if (iface == NULL)
2554                 return;
2555         wpa_printf(MSG_DEBUG, "%s: num_bss=%u conf->num_bss=%u",
2556                    __func__, (unsigned int) iface->num_bss,
2557                    (unsigned int) iface->conf->num_bss);
2558         driver = iface->bss[0]->driver;
2559         drv_priv = iface->bss[0]->drv_priv;
2560         hostapd_interface_deinit(iface);
2561         wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit",
2562                    __func__, driver, drv_priv);
2563         if (driver && driver->hapd_deinit && drv_priv) {
2564                 driver->hapd_deinit(drv_priv);
2565                 iface->bss[0]->drv_priv = NULL;
2566         }
2567         hostapd_interface_free(iface);
2568 }
2569
2570
2571 static void hostapd_deinit_driver(const struct wpa_driver_ops *driver,
2572                                   void *drv_priv,
2573                                   struct hostapd_iface *hapd_iface)
2574 {
2575         size_t j;
2576
2577         wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit",
2578                    __func__, driver, drv_priv);
2579         if (driver && driver->hapd_deinit && drv_priv) {
2580                 driver->hapd_deinit(drv_priv);
2581                 for (j = 0; j < hapd_iface->num_bss; j++) {
2582                         wpa_printf(MSG_DEBUG, "%s:bss[%d]->drv_priv=%p",
2583                                    __func__, (int) j,
2584                                    hapd_iface->bss[j]->drv_priv);
2585                         if (hapd_iface->bss[j]->drv_priv == drv_priv)
2586                                 hapd_iface->bss[j]->drv_priv = NULL;
2587                 }
2588         }
2589 }
2590
2591
2592 int hostapd_enable_iface(struct hostapd_iface *hapd_iface)
2593 {
2594         size_t j;
2595
2596         if (hapd_iface->bss[0]->drv_priv != NULL) {
2597                 wpa_printf(MSG_ERROR, "Interface %s already enabled",
2598                            hapd_iface->conf->bss[0]->iface);
2599                 return -1;
2600         }
2601
2602         wpa_printf(MSG_DEBUG, "Enable interface %s",
2603                    hapd_iface->conf->bss[0]->iface);
2604
2605         for (j = 0; j < hapd_iface->num_bss; j++)
2606                 hostapd_set_security_params(hapd_iface->conf->bss[j], 1);
2607         if (hostapd_config_check(hapd_iface->conf, 1) < 0) {
2608                 wpa_printf(MSG_INFO, "Invalid configuration - cannot enable");
2609                 return -1;
2610         }
2611
2612         if (hapd_iface->interfaces == NULL ||
2613             hapd_iface->interfaces->driver_init == NULL ||
2614             hapd_iface->interfaces->driver_init(hapd_iface))
2615                 return -1;
2616
2617         if (hostapd_setup_interface(hapd_iface)) {
2618                 hostapd_deinit_driver(hapd_iface->bss[0]->driver,
2619                                       hapd_iface->bss[0]->drv_priv,
2620                                       hapd_iface);
2621                 return -1;
2622         }
2623
2624         return 0;
2625 }
2626
2627
2628 int hostapd_reload_iface(struct hostapd_iface *hapd_iface)
2629 {
2630         size_t j;
2631
2632         wpa_printf(MSG_DEBUG, "Reload interface %s",
2633                    hapd_iface->conf->bss[0]->iface);
2634         for (j = 0; j < hapd_iface->num_bss; j++)
2635                 hostapd_set_security_params(hapd_iface->conf->bss[j], 1);
2636         if (hostapd_config_check(hapd_iface->conf, 1) < 0) {
2637                 wpa_printf(MSG_ERROR, "Updated configuration is invalid");
2638                 return -1;
2639         }
2640         hostapd_clear_old(hapd_iface);
2641         for (j = 0; j < hapd_iface->num_bss; j++)
2642                 hostapd_reload_bss(hapd_iface->bss[j]);
2643
2644         return 0;
2645 }
2646
2647
2648 int hostapd_disable_iface(struct hostapd_iface *hapd_iface)
2649 {
2650         size_t j;
2651         const struct wpa_driver_ops *driver;
2652         void *drv_priv;
2653
2654         if (hapd_iface == NULL)
2655                 return -1;
2656
2657         if (hapd_iface->bss[0]->drv_priv == NULL) {
2658                 wpa_printf(MSG_INFO, "Interface %s already disabled",
2659                            hapd_iface->conf->bss[0]->iface);
2660                 return -1;
2661         }
2662
2663         wpa_msg(hapd_iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
2664         driver = hapd_iface->bss[0]->driver;
2665         drv_priv = hapd_iface->bss[0]->drv_priv;
2666
2667         hapd_iface->driver_ap_teardown =
2668                 !!(hapd_iface->drv_flags &
2669                    WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
2670
2671 #ifdef NEED_AP_MLME
2672         for (j = 0; j < hapd_iface->num_bss; j++)
2673                 hostapd_cleanup_cs_params(hapd_iface->bss[j]);
2674 #endif /* NEED_AP_MLME */
2675
2676         /* same as hostapd_interface_deinit without deinitializing ctrl-iface */
2677         for (j = 0; j < hapd_iface->num_bss; j++) {
2678                 struct hostapd_data *hapd = hapd_iface->bss[j];
2679                 hostapd_bss_deinit_no_free(hapd);
2680                 hostapd_free_hapd_data(hapd);
2681         }
2682
2683         hostapd_deinit_driver(driver, drv_priv, hapd_iface);
2684
2685         /* From hostapd_cleanup_iface: These were initialized in
2686          * hostapd_setup_interface and hostapd_setup_interface_complete
2687          */
2688         hostapd_cleanup_iface_partial(hapd_iface);
2689
2690         wpa_printf(MSG_DEBUG, "Interface %s disabled",
2691                    hapd_iface->bss[0]->conf->iface);
2692         hostapd_set_state(hapd_iface, HAPD_IFACE_DISABLED);
2693         return 0;
2694 }
2695
2696
2697 static struct hostapd_iface *
2698 hostapd_iface_alloc(struct hapd_interfaces *interfaces)
2699 {
2700         struct hostapd_iface **iface, *hapd_iface;
2701
2702         iface = os_realloc_array(interfaces->iface, interfaces->count + 1,
2703                                  sizeof(struct hostapd_iface *));
2704         if (iface == NULL)
2705                 return NULL;
2706         interfaces->iface = iface;
2707         hapd_iface = interfaces->iface[interfaces->count] =
2708                 hostapd_alloc_iface();
2709         if (hapd_iface == NULL) {
2710                 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for "
2711                            "the interface", __func__);
2712                 return NULL;
2713         }
2714         interfaces->count++;
2715         hapd_iface->interfaces = interfaces;
2716
2717         return hapd_iface;
2718 }
2719
2720
2721 static struct hostapd_config *
2722 hostapd_config_alloc(struct hapd_interfaces *interfaces, const char *ifname,
2723                      const char *ctrl_iface, const char *driver)
2724 {
2725         struct hostapd_bss_config *bss;
2726         struct hostapd_config *conf;
2727
2728         /* Allocates memory for bss and conf */
2729         conf = hostapd_config_defaults();
2730         if (conf == NULL) {
2731                  wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for "
2732                                 "configuration", __func__);
2733                  return NULL;
2734         }
2735
2736         if (driver) {
2737                 int j;
2738
2739                 for (j = 0; wpa_drivers[j]; j++) {
2740                         if (os_strcmp(driver, wpa_drivers[j]->name) == 0) {
2741                                 conf->driver = wpa_drivers[j];
2742                                 goto skip;
2743                         }
2744                 }
2745
2746                 wpa_printf(MSG_ERROR,
2747                            "Invalid/unknown driver '%s' - registering the default driver",
2748                            driver);
2749         }
2750
2751         conf->driver = wpa_drivers[0];
2752         if (conf->driver == NULL) {
2753                 wpa_printf(MSG_ERROR, "No driver wrappers registered!");
2754                 hostapd_config_free(conf);
2755                 return NULL;
2756         }
2757
2758 skip:
2759         bss = conf->last_bss = conf->bss[0];
2760
2761         os_strlcpy(bss->iface, ifname, sizeof(bss->iface));
2762         bss->ctrl_interface = os_strdup(ctrl_iface);
2763         if (bss->ctrl_interface == NULL) {
2764                 hostapd_config_free(conf);
2765                 return NULL;
2766         }
2767
2768         /* Reading configuration file skipped, will be done in SET!
2769          * From reading the configuration till the end has to be done in
2770          * SET
2771          */
2772         return conf;
2773 }
2774
2775
2776 static int hostapd_data_alloc(struct hostapd_iface *hapd_iface,
2777                               struct hostapd_config *conf)
2778 {
2779         size_t i;
2780         struct hostapd_data *hapd;
2781
2782         hapd_iface->bss = os_calloc(conf->num_bss,
2783                                     sizeof(struct hostapd_data *));
2784         if (hapd_iface->bss == NULL)
2785                 return -1;
2786
2787         for (i = 0; i < conf->num_bss; i++) {
2788                 hapd = hapd_iface->bss[i] =
2789                         hostapd_alloc_bss_data(hapd_iface, conf, conf->bss[i]);
2790                 if (hapd == NULL) {
2791                         while (i > 0) {
2792                                 i--;
2793                                 os_free(hapd_iface->bss[i]);
2794                                 hapd_iface->bss[i] = NULL;
2795                         }
2796                         os_free(hapd_iface->bss);
2797                         hapd_iface->bss = NULL;
2798                         return -1;
2799                 }
2800                 hapd->msg_ctx = hapd;
2801         }
2802
2803         hapd_iface->conf = conf;
2804         hapd_iface->num_bss = conf->num_bss;
2805
2806         return 0;
2807 }
2808
2809
2810 int hostapd_add_iface(struct hapd_interfaces *interfaces, char *buf)
2811 {
2812         struct hostapd_config *conf = NULL;
2813         struct hostapd_iface *hapd_iface = NULL, *new_iface = NULL;
2814         struct hostapd_data *hapd;
2815         char *ptr;
2816         size_t i, j;
2817         const char *conf_file = NULL, *phy_name = NULL;
2818
2819         if (os_strncmp(buf, "bss_config=", 11) == 0) {
2820                 char *pos;
2821                 phy_name = buf + 11;
2822                 pos = os_strchr(phy_name, ':');
2823                 if (!pos)
2824                         return -1;
2825                 *pos++ = '\0';
2826                 conf_file = pos;
2827                 if (!os_strlen(conf_file))
2828                         return -1;
2829
2830                 hapd_iface = hostapd_interface_init_bss(interfaces, phy_name,
2831                                                         conf_file, 0);
2832                 if (!hapd_iface)
2833                         return -1;
2834                 for (j = 0; j < interfaces->count; j++) {
2835                         if (interfaces->iface[j] == hapd_iface)
2836                                 break;
2837                 }
2838                 if (j == interfaces->count) {
2839                         struct hostapd_iface **tmp;
2840                         tmp = os_realloc_array(interfaces->iface,
2841                                                interfaces->count + 1,
2842                                                sizeof(struct hostapd_iface *));
2843                         if (!tmp) {
2844                                 hostapd_interface_deinit_free(hapd_iface);
2845                                 return -1;
2846                         }
2847                         interfaces->iface = tmp;
2848                         interfaces->iface[interfaces->count++] = hapd_iface;
2849                         new_iface = hapd_iface;
2850                 }
2851
2852                 if (new_iface) {
2853                         if (interfaces->driver_init(hapd_iface))
2854                                 goto fail;
2855
2856                         if (hostapd_setup_interface(hapd_iface)) {
2857                                 hostapd_deinit_driver(
2858                                         hapd_iface->bss[0]->driver,
2859                                         hapd_iface->bss[0]->drv_priv,
2860                                         hapd_iface);
2861                                 goto fail;
2862                         }
2863                 } else {
2864                         /* Assign new BSS with bss[0]'s driver info */
2865                         hapd = hapd_iface->bss[hapd_iface->num_bss - 1];
2866                         hapd->driver = hapd_iface->bss[0]->driver;
2867                         hapd->drv_priv = hapd_iface->bss[0]->drv_priv;
2868                         os_memcpy(hapd->own_addr, hapd_iface->bss[0]->own_addr,
2869                                   ETH_ALEN);
2870
2871                         if (start_ctrl_iface_bss(hapd) < 0 ||
2872                             (hapd_iface->state == HAPD_IFACE_ENABLED &&
2873                              hostapd_setup_bss(hapd, -1))) {
2874                                 hostapd_cleanup(hapd);
2875                                 hapd_iface->bss[hapd_iface->num_bss - 1] = NULL;
2876                                 hapd_iface->conf->num_bss--;
2877                                 hapd_iface->num_bss--;
2878                                 wpa_printf(MSG_DEBUG, "%s: free hapd %p %s",
2879                                            __func__, hapd, hapd->conf->iface);
2880                                 hostapd_config_free_bss(hapd->conf);
2881                                 hapd->conf = NULL;
2882                                 os_free(hapd);
2883                                 return -1;
2884                         }
2885                 }
2886                 hostapd_owe_update_trans(hapd_iface);
2887                 return 0;
2888         }
2889
2890         ptr = os_strchr(buf, ' ');
2891         if (ptr == NULL)
2892                 return -1;
2893         *ptr++ = '\0';
2894
2895         if (os_strncmp(ptr, "config=", 7) == 0)
2896                 conf_file = ptr + 7;
2897
2898         for (i = 0; i < interfaces->count; i++) {
2899                 if (!os_strcmp(interfaces->iface[i]->conf->bss[0]->iface,
2900                                buf)) {
2901                         wpa_printf(MSG_INFO, "Cannot add interface - it "
2902                                    "already exists");
2903                         return -1;
2904                 }
2905         }
2906
2907         hapd_iface = hostapd_iface_alloc(interfaces);
2908         if (hapd_iface == NULL) {
2909                 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
2910                            "for interface", __func__);
2911                 goto fail;
2912         }
2913         new_iface = hapd_iface;
2914
2915         if (conf_file && interfaces->config_read_cb) {
2916                 conf = interfaces->config_read_cb(conf_file);
2917                 if (conf && conf->bss)
2918                         os_strlcpy(conf->bss[0]->iface, buf,
2919                                    sizeof(conf->bss[0]->iface));
2920         } else {
2921                 char *driver = os_strchr(ptr, ' ');
2922
2923                 if (driver)
2924                         *driver++ = '\0';
2925                 conf = hostapd_config_alloc(interfaces, buf, ptr, driver);
2926         }
2927
2928         if (conf == NULL || conf->bss == NULL) {
2929                 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
2930                            "for configuration", __func__);
2931                 goto fail;
2932         }
2933
2934         if (hostapd_data_alloc(hapd_iface, conf) < 0) {
2935                 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
2936                            "for hostapd", __func__);
2937                 goto fail;
2938         }
2939         conf = NULL;
2940
2941         if (start_ctrl_iface(hapd_iface) < 0)
2942                 goto fail;
2943
2944         wpa_printf(MSG_INFO, "Add interface '%s'",
2945                    hapd_iface->conf->bss[0]->iface);
2946
2947         return 0;
2948
2949 fail:
2950         if (conf)
2951                 hostapd_config_free(conf);
2952         if (hapd_iface) {
2953                 if (hapd_iface->bss) {
2954                         for (i = 0; i < hapd_iface->num_bss; i++) {
2955                                 hapd = hapd_iface->bss[i];
2956                                 if (!hapd)
2957                                         continue;
2958                                 if (hapd_iface->interfaces &&
2959                                     hapd_iface->interfaces->ctrl_iface_deinit)
2960                                         hapd_iface->interfaces->
2961                                                 ctrl_iface_deinit(hapd);
2962                                 wpa_printf(MSG_DEBUG, "%s: free hapd %p (%s)",
2963                                            __func__, hapd_iface->bss[i],
2964                                            hapd->conf->iface);
2965                                 hostapd_cleanup(hapd);
2966                                 os_free(hapd);
2967                                 hapd_iface->bss[i] = NULL;
2968                         }
2969                         os_free(hapd_iface->bss);
2970                         hapd_iface->bss = NULL;
2971                 }
2972                 if (new_iface) {
2973                         interfaces->count--;
2974                         interfaces->iface[interfaces->count] = NULL;
2975                 }
2976                 hostapd_cleanup_iface(hapd_iface);
2977         }
2978         return -1;
2979 }
2980
2981
2982 static int hostapd_remove_bss(struct hostapd_iface *iface, unsigned int idx)
2983 {
2984         size_t i;
2985
2986         wpa_printf(MSG_INFO, "Remove BSS '%s'", iface->conf->bss[idx]->iface);
2987
2988         /* Remove hostapd_data only if it has already been initialized */
2989         if (idx < iface->num_bss) {
2990                 struct hostapd_data *hapd = iface->bss[idx];
2991
2992                 hostapd_bss_deinit(hapd);
2993                 wpa_printf(MSG_DEBUG, "%s: free hapd %p (%s)",
2994                            __func__, hapd, hapd->conf->iface);
2995                 hostapd_config_free_bss(hapd->conf);
2996                 hapd->conf = NULL;
2997                 os_free(hapd);
2998
2999                 iface->num_bss--;
3000
3001                 for (i = idx; i < iface->num_bss; i++)
3002                         iface->bss[i] = iface->bss[i + 1];
3003         } else {
3004                 hostapd_config_free_bss(iface->conf->bss[idx]);
3005                 iface->conf->bss[idx] = NULL;
3006         }
3007
3008         iface->conf->num_bss--;
3009         for (i = idx; i < iface->conf->num_bss; i++)
3010                 iface->conf->bss[i] = iface->conf->bss[i + 1];
3011
3012         return 0;
3013 }
3014
3015
3016 int hostapd_remove_iface(struct hapd_interfaces *interfaces, char *buf)
3017 {
3018         struct hostapd_iface *hapd_iface;
3019         size_t i, j, k = 0;
3020
3021         for (i = 0; i < interfaces->count; i++) {
3022                 hapd_iface = interfaces->iface[i];
3023                 if (hapd_iface == NULL)
3024                         return -1;
3025                 if (!os_strcmp(hapd_iface->conf->bss[0]->iface, buf)) {
3026                         wpa_printf(MSG_INFO, "Remove interface '%s'", buf);
3027                         hapd_iface->driver_ap_teardown =
3028                                 !!(hapd_iface->drv_flags &
3029                                    WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
3030
3031                         hostapd_interface_deinit_free(hapd_iface);
3032                         k = i;
3033                         while (k < (interfaces->count - 1)) {
3034                                 interfaces->iface[k] =
3035                                         interfaces->iface[k + 1];
3036                                 k++;
3037                         }
3038                         interfaces->count--;
3039                         return 0;
3040                 }
3041
3042                 for (j = 0; j < hapd_iface->conf->num_bss; j++) {
3043                         if (!os_strcmp(hapd_iface->conf->bss[j]->iface, buf)) {
3044                                 hapd_iface->driver_ap_teardown =
3045                                         !(hapd_iface->drv_flags &
3046                                           WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
3047                                 return hostapd_remove_bss(hapd_iface, j);
3048                         }
3049                 }
3050         }
3051         return -1;
3052 }
3053
3054
3055 /**
3056  * hostapd_new_assoc_sta - Notify that a new station associated with the AP
3057  * @hapd: Pointer to BSS data
3058  * @sta: Pointer to the associated STA data
3059  * @reassoc: 1 to indicate this was a re-association; 0 = first association
3060  *
3061  * This function will be called whenever a station associates with the AP. It
3062  * can be called from ieee802_11.c for drivers that export MLME to hostapd and
3063  * from drv_callbacks.c based on driver events for drivers that take care of
3064  * management frames (IEEE 802.11 authentication and association) internally.
3065  */
3066 void hostapd_new_assoc_sta(struct hostapd_data *hapd, struct sta_info *sta,
3067                            int reassoc)
3068 {
3069         if (hapd->tkip_countermeasures) {
3070                 hostapd_drv_sta_deauth(hapd, sta->addr,
3071                                        WLAN_REASON_MICHAEL_MIC_FAILURE);
3072                 return;
3073         }
3074
3075         hostapd_prune_associations(hapd, sta->addr);
3076         ap_sta_clear_disconnect_timeouts(hapd, sta);
3077
3078         /* IEEE 802.11F (IAPP) */
3079         if (hapd->conf->ieee802_11f)
3080                 iapp_new_station(hapd->iapp, sta);
3081
3082 #ifdef CONFIG_P2P
3083         if (sta->p2p_ie == NULL && !sta->no_p2p_set) {
3084                 sta->no_p2p_set = 1;
3085                 hapd->num_sta_no_p2p++;
3086                 if (hapd->num_sta_no_p2p == 1)
3087                         hostapd_p2p_non_p2p_sta_connected(hapd);
3088         }
3089 #endif /* CONFIG_P2P */
3090
3091         /* Start accounting here, if IEEE 802.1X and WPA are not used.
3092          * IEEE 802.1X/WPA code will start accounting after the station has
3093          * been authorized. */
3094         if (!hapd->conf->ieee802_1x && !hapd->conf->wpa && !hapd->conf->osen) {
3095                 ap_sta_set_authorized(hapd, sta, 1);
3096                 os_get_reltime(&sta->connected_time);
3097                 accounting_sta_start(hapd, sta);
3098         }
3099
3100         /* Start IEEE 802.1X authentication process for new stations */
3101         ieee802_1x_new_station(hapd, sta);
3102         if (reassoc) {
3103                 if (sta->auth_alg != WLAN_AUTH_FT &&
3104                     sta->auth_alg != WLAN_AUTH_FILS_SK &&
3105                     sta->auth_alg != WLAN_AUTH_FILS_SK_PFS &&
3106                     sta->auth_alg != WLAN_AUTH_FILS_PK &&
3107                     !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)))
3108                         wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH);
3109         } else
3110                 wpa_auth_sta_associated(hapd->wpa_auth, sta->wpa_sm);
3111
3112         if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_WIRED) {
3113                 if (eloop_cancel_timeout(ap_handle_timer, hapd, sta) > 0) {
3114                         wpa_printf(MSG_DEBUG,
3115                                    "%s: %s: canceled wired ap_handle_timer timeout for "
3116                                    MACSTR,
3117                                    hapd->conf->iface, __func__,
3118                                    MAC2STR(sta->addr));
3119                 }
3120         } else if (!(hapd->iface->drv_flags &
3121                      WPA_DRIVER_FLAGS_INACTIVITY_TIMER)) {
3122                 wpa_printf(MSG_DEBUG,
3123                            "%s: %s: reschedule ap_handle_timer timeout for "
3124                            MACSTR " (%d seconds - ap_max_inactivity)",
3125                            hapd->conf->iface, __func__, MAC2STR(sta->addr),
3126                            hapd->conf->ap_max_inactivity);
3127                 eloop_cancel_timeout(ap_handle_timer, hapd, sta);
3128                 eloop_register_timeout(hapd->conf->ap_max_inactivity, 0,
3129                                        ap_handle_timer, hapd, sta);
3130         }
3131 }
3132
3133
3134 const char * hostapd_state_text(enum hostapd_iface_state s)
3135 {
3136         switch (s) {
3137         case HAPD_IFACE_UNINITIALIZED:
3138                 return "UNINITIALIZED";
3139         case HAPD_IFACE_DISABLED:
3140                 return "DISABLED";
3141         case HAPD_IFACE_COUNTRY_UPDATE:
3142                 return "COUNTRY_UPDATE";
3143         case HAPD_IFACE_ACS:
3144                 return "ACS";
3145         case HAPD_IFACE_HT_SCAN:
3146                 return "HT_SCAN";
3147         case HAPD_IFACE_DFS:
3148                 return "DFS";
3149         case HAPD_IFACE_ENABLED:
3150                 return "ENABLED";
3151         }
3152
3153         return "UNKNOWN";
3154 }
3155
3156
3157 void hostapd_set_state(struct hostapd_iface *iface, enum hostapd_iface_state s)
3158 {
3159         wpa_printf(MSG_INFO, "%s: interface state %s->%s",
3160                    iface->conf ? iface->conf->bss[0]->iface : "N/A",
3161                    hostapd_state_text(iface->state), hostapd_state_text(s));
3162         iface->state = s;
3163 }
3164
3165
3166 int hostapd_csa_in_progress(struct hostapd_iface *iface)
3167 {
3168         unsigned int i;
3169
3170         for (i = 0; i < iface->num_bss; i++)
3171                 if (iface->bss[i]->csa_in_progress)
3172                         return 1;
3173         return 0;
3174 }
3175
3176
3177 #ifdef NEED_AP_MLME
3178
3179 static void free_beacon_data(struct beacon_data *beacon)
3180 {
3181         os_free(beacon->head);
3182         beacon->head = NULL;
3183         os_free(beacon->tail);
3184         beacon->tail = NULL;
3185         os_free(beacon->probe_resp);
3186         beacon->probe_resp = NULL;
3187         os_free(beacon->beacon_ies);
3188         beacon->beacon_ies = NULL;
3189         os_free(beacon->proberesp_ies);
3190         beacon->proberesp_ies = NULL;
3191         os_free(beacon->assocresp_ies);
3192         beacon->assocresp_ies = NULL;
3193 }
3194
3195
3196 static int hostapd_build_beacon_data(struct hostapd_data *hapd,
3197                                      struct beacon_data *beacon)
3198 {
3199         struct wpabuf *beacon_extra, *proberesp_extra, *assocresp_extra;
3200         struct wpa_driver_ap_params params;
3201         int ret;
3202
3203         os_memset(beacon, 0, sizeof(*beacon));
3204         ret = ieee802_11_build_ap_params(hapd, &params);
3205         if (ret < 0)
3206                 return ret;
3207
3208         ret = hostapd_build_ap_extra_ies(hapd, &beacon_extra,
3209                                          &proberesp_extra,
3210                                          &assocresp_extra);
3211         if (ret)
3212                 goto free_ap_params;
3213
3214         ret = -1;
3215         beacon->head = os_memdup(params.head, params.head_len);
3216         if (!beacon->head)
3217                 goto free_ap_extra_ies;
3218
3219         beacon->head_len = params.head_len;
3220
3221         beacon->tail = os_memdup(params.tail, params.tail_len);
3222         if (!beacon->tail)
3223                 goto free_beacon;
3224
3225         beacon->tail_len = params.tail_len;
3226
3227         if (params.proberesp != NULL) {
3228                 beacon->probe_resp = os_memdup(params.proberesp,
3229                                                params.proberesp_len);
3230                 if (!beacon->probe_resp)
3231                         goto free_beacon;
3232
3233                 beacon->probe_resp_len = params.proberesp_len;
3234         }
3235
3236         /* copy the extra ies */
3237         if (beacon_extra) {
3238                 beacon->beacon_ies = os_memdup(beacon_extra->buf,
3239                                                wpabuf_len(beacon_extra));
3240                 if (!beacon->beacon_ies)
3241                         goto free_beacon;
3242
3243                 beacon->beacon_ies_len = wpabuf_len(beacon_extra);
3244         }
3245
3246         if (proberesp_extra) {
3247                 beacon->proberesp_ies = os_memdup(proberesp_extra->buf,
3248                                                   wpabuf_len(proberesp_extra));
3249                 if (!beacon->proberesp_ies)
3250                         goto free_beacon;
3251
3252                 beacon->proberesp_ies_len = wpabuf_len(proberesp_extra);
3253         }
3254
3255         if (assocresp_extra) {
3256                 beacon->assocresp_ies = os_memdup(assocresp_extra->buf,
3257                                                   wpabuf_len(assocresp_extra));
3258                 if (!beacon->assocresp_ies)
3259                         goto free_beacon;
3260
3261                 beacon->assocresp_ies_len = wpabuf_len(assocresp_extra);
3262         }
3263
3264         ret = 0;
3265 free_beacon:
3266         /* if the function fails, the caller should not free beacon data */
3267         if (ret)
3268                 free_beacon_data(beacon);
3269
3270 free_ap_extra_ies:
3271         hostapd_free_ap_extra_ies(hapd, beacon_extra, proberesp_extra,
3272                                   assocresp_extra);
3273 free_ap_params:
3274         ieee802_11_free_ap_params(&params);
3275         return ret;
3276 }
3277
3278
3279 /*
3280  * TODO: This flow currently supports only changing channel and width within
3281  * the same hw_mode. Any other changes to MAC parameters or provided settings
3282  * are not supported.
3283  */
3284 static int hostapd_change_config_freq(struct hostapd_data *hapd,
3285                                       struct hostapd_config *conf,
3286                                       struct hostapd_freq_params *params,
3287                                       struct hostapd_freq_params *old_params)
3288 {
3289         int channel;
3290
3291         if (!params->channel) {
3292                 /* check if the new channel is supported by hw */
3293                 params->channel = hostapd_hw_get_channel(hapd, params->freq);
3294         }
3295
3296         channel = params->channel;
3297         if (!channel)
3298                 return -1;
3299
3300         /* if a pointer to old_params is provided we save previous state */
3301         if (old_params &&
3302             hostapd_set_freq_params(old_params, conf->hw_mode,
3303                                     hostapd_hw_get_freq(hapd, conf->channel),
3304                                     conf->channel, conf->ieee80211n,
3305                                     conf->ieee80211ac,
3306                                     conf->secondary_channel,
3307                                     conf->vht_oper_chwidth,
3308                                     conf->vht_oper_centr_freq_seg0_idx,
3309                                     conf->vht_oper_centr_freq_seg1_idx,
3310                                     conf->vht_capab))
3311                 return -1;
3312
3313         switch (params->bandwidth) {
3314         case 0:
3315         case 20:
3316         case 40:
3317                 conf->vht_oper_chwidth = VHT_CHANWIDTH_USE_HT;
3318                 break;
3319         case 80:
3320                 if (params->center_freq2)
3321                         conf->vht_oper_chwidth = VHT_CHANWIDTH_80P80MHZ;
3322                 else
3323                         conf->vht_oper_chwidth = VHT_CHANWIDTH_80MHZ;
3324                 break;
3325         case 160:
3326                 conf->vht_oper_chwidth = VHT_CHANWIDTH_160MHZ;
3327                 break;
3328         default:
3329                 return -1;
3330         }
3331
3332         conf->channel = channel;
3333         conf->ieee80211n = params->ht_enabled;
3334         conf->secondary_channel = params->sec_channel_offset;
3335         ieee80211_freq_to_chan(params->center_freq1,
3336                                &conf->vht_oper_centr_freq_seg0_idx);
3337         ieee80211_freq_to_chan(params->center_freq2,
3338                                &conf->vht_oper_centr_freq_seg1_idx);
3339
3340         /* TODO: maybe call here hostapd_config_check here? */
3341
3342         return 0;
3343 }
3344
3345
3346 static int hostapd_fill_csa_settings(struct hostapd_data *hapd,
3347                                      struct csa_settings *settings)
3348 {
3349         struct hostapd_iface *iface = hapd->iface;
3350         struct hostapd_freq_params old_freq;
3351         int ret;
3352         u8 chan, vht_bandwidth;
3353
3354         os_memset(&old_freq, 0, sizeof(old_freq));
3355         if (!iface || !iface->freq || hapd->csa_in_progress)
3356                 return -1;
3357
3358         switch (settings->freq_params.bandwidth) {
3359         case 80:
3360                 if (settings->freq_params.center_freq2)
3361                         vht_bandwidth = VHT_CHANWIDTH_80P80MHZ;
3362                 else
3363                         vht_bandwidth = VHT_CHANWIDTH_80MHZ;
3364                 break;
3365         case 160:
3366                 vht_bandwidth = VHT_CHANWIDTH_160MHZ;
3367                 break;
3368         default:
3369                 vht_bandwidth = VHT_CHANWIDTH_USE_HT;
3370                 break;
3371         }
3372
3373         if (ieee80211_freq_to_channel_ext(
3374                     settings->freq_params.freq,
3375                     settings->freq_params.sec_channel_offset,
3376                     vht_bandwidth,
3377                     &hapd->iface->cs_oper_class,
3378                     &chan) == NUM_HOSTAPD_MODES) {
3379                 wpa_printf(MSG_DEBUG,
3380                            "invalid frequency for channel switch (freq=%d, sec_channel_offset=%d, vht_enabled=%d)",
3381                            settings->freq_params.freq,
3382                            settings->freq_params.sec_channel_offset,
3383                            settings->freq_params.vht_enabled);
3384                 return -1;
3385         }
3386
3387         settings->freq_params.channel = chan;
3388
3389         ret = hostapd_change_config_freq(iface->bss[0], iface->conf,
3390                                          &settings->freq_params,
3391                                          &old_freq);
3392         if (ret)
3393                 return ret;
3394
3395         ret = hostapd_build_beacon_data(hapd, &settings->beacon_after);
3396
3397         /* change back the configuration */
3398         hostapd_change_config_freq(iface->bss[0], iface->conf,
3399                                    &old_freq, NULL);
3400
3401         if (ret)
3402                 return ret;
3403
3404         /* set channel switch parameters for csa ie */
3405         hapd->cs_freq_params = settings->freq_params;
3406         hapd->cs_count = settings->cs_count;
3407         hapd->cs_block_tx = settings->block_tx;
3408
3409         ret = hostapd_build_beacon_data(hapd, &settings->beacon_csa);
3410         if (ret) {
3411                 free_beacon_data(&settings->beacon_after);
3412                 return ret;
3413         }
3414
3415         settings->counter_offset_beacon[0] = hapd->cs_c_off_beacon;
3416         settings->counter_offset_presp[0] = hapd->cs_c_off_proberesp;
3417         settings->counter_offset_beacon[1] = hapd->cs_c_off_ecsa_beacon;
3418         settings->counter_offset_presp[1] = hapd->cs_c_off_ecsa_proberesp;
3419
3420         return 0;
3421 }
3422
3423
3424 void hostapd_cleanup_cs_params(struct hostapd_data *hapd)
3425 {
3426         os_memset(&hapd->cs_freq_params, 0, sizeof(hapd->cs_freq_params));
3427         hapd->cs_count = 0;
3428         hapd->cs_block_tx = 0;
3429         hapd->cs_c_off_beacon = 0;
3430         hapd->cs_c_off_proberesp = 0;
3431         hapd->csa_in_progress = 0;
3432         hapd->cs_c_off_ecsa_beacon = 0;
3433         hapd->cs_c_off_ecsa_proberesp = 0;
3434 }
3435
3436
3437 void hostapd_chan_switch_vht_config(struct hostapd_data *hapd, int vht_enabled)
3438 {
3439         if (vht_enabled)
3440                 hapd->iconf->ch_switch_vht_config |= CH_SWITCH_VHT_ENABLED;
3441         else
3442                 hapd->iconf->ch_switch_vht_config |= CH_SWITCH_VHT_DISABLED;
3443
3444         hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
3445                        HOSTAPD_LEVEL_INFO, "CHAN_SWITCH VHT CONFIG 0x%x",
3446                        hapd->iconf->ch_switch_vht_config);
3447 }
3448
3449
3450 int hostapd_switch_channel(struct hostapd_data *hapd,
3451                            struct csa_settings *settings)
3452 {
3453         int ret;
3454
3455         if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
3456                 wpa_printf(MSG_INFO, "CSA is not supported");
3457                 return -1;
3458         }
3459
3460         ret = hostapd_fill_csa_settings(hapd, settings);
3461         if (ret)
3462                 return ret;
3463
3464         ret = hostapd_drv_switch_channel(hapd, settings);
3465         free_beacon_data(&settings->beacon_csa);
3466         free_beacon_data(&settings->beacon_after);
3467
3468         if (ret) {
3469                 /* if we failed, clean cs parameters */
3470                 hostapd_cleanup_cs_params(hapd);
3471                 return ret;
3472         }
3473
3474         hapd->csa_in_progress = 1;
3475         return 0;
3476 }
3477
3478
3479 void
3480 hostapd_switch_channel_fallback(struct hostapd_iface *iface,
3481                                 const struct hostapd_freq_params *freq_params)
3482 {
3483         int vht_seg0_idx = 0, vht_seg1_idx = 0, vht_bw = VHT_CHANWIDTH_USE_HT;
3484
3485         wpa_printf(MSG_DEBUG, "Restarting all CSA-related BSSes");
3486
3487         if (freq_params->center_freq1)
3488                 vht_seg0_idx = 36 + (freq_params->center_freq1 - 5180) / 5;
3489         if (freq_params->center_freq2)
3490                 vht_seg1_idx = 36 + (freq_params->center_freq2 - 5180) / 5;
3491
3492         switch (freq_params->bandwidth) {
3493         case 0:
3494         case 20:
3495         case 40:
3496                 vht_bw = VHT_CHANWIDTH_USE_HT;
3497                 break;
3498         case 80:
3499                 if (freq_params->center_freq2)
3500                         vht_bw = VHT_CHANWIDTH_80P80MHZ;
3501                 else
3502                         vht_bw = VHT_CHANWIDTH_80MHZ;
3503                 break;
3504         case 160:
3505                 vht_bw = VHT_CHANWIDTH_160MHZ;
3506                 break;
3507         default:
3508                 wpa_printf(MSG_WARNING, "Unknown CSA bandwidth: %d",
3509                            freq_params->bandwidth);
3510                 break;
3511         }
3512
3513         iface->freq = freq_params->freq;
3514         iface->conf->channel = freq_params->channel;
3515         iface->conf->secondary_channel = freq_params->sec_channel_offset;
3516         iface->conf->vht_oper_centr_freq_seg0_idx = vht_seg0_idx;
3517         iface->conf->vht_oper_centr_freq_seg1_idx = vht_seg1_idx;
3518         iface->conf->vht_oper_chwidth = vht_bw;
3519         iface->conf->ieee80211n = freq_params->ht_enabled;
3520         iface->conf->ieee80211ac = freq_params->vht_enabled;
3521
3522         /*
3523          * cs_params must not be cleared earlier because the freq_params
3524          * argument may actually point to one of these.
3525          * These params will be cleared during interface disable below.
3526          */
3527         hostapd_disable_iface(iface);
3528         hostapd_enable_iface(iface);
3529 }
3530
3531 #endif /* NEED_AP_MLME */
3532
3533
3534 struct hostapd_data * hostapd_get_iface(struct hapd_interfaces *interfaces,
3535                                         const char *ifname)
3536 {
3537         size_t i, j;
3538
3539         for (i = 0; i < interfaces->count; i++) {
3540                 struct hostapd_iface *iface = interfaces->iface[i];
3541
3542                 for (j = 0; j < iface->num_bss; j++) {
3543                         struct hostapd_data *hapd = iface->bss[j];
3544
3545                         if (os_strcmp(ifname, hapd->conf->iface) == 0)
3546                                 return hapd;
3547                 }
3548         }
3549
3550         return NULL;
3551 }
3552
3553
3554 void hostapd_periodic_iface(struct hostapd_iface *iface)
3555 {
3556         size_t i;
3557
3558         ap_list_timer(iface);
3559
3560         for (i = 0; i < iface->num_bss; i++) {
3561                 struct hostapd_data *hapd = iface->bss[i];
3562
3563                 if (!hapd->started)
3564                         continue;
3565
3566 #ifndef CONFIG_NO_RADIUS
3567                 hostapd_acl_expire(hapd);
3568 #endif /* CONFIG_NO_RADIUS */
3569         }
3570 }