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 "radius/radius_client.h"
  16 #include "radius/radius_das.h"
  17 #include "eap_server/tncs.h"
  18 #include "hostapd.h"
  19 #include "authsrv.h"
  20 #include "sta_info.h"
  21 #include "accounting.h"
  22 #include "ap_list.h"
  23 #include "beacon.h"
  24 #include "iapp.h"
  25 #include "ieee802_1x.h"
  26 #include "ieee802_11_auth.h"
  27 #include "vlan_init.h"
  28 #include "wpa_auth.h"
  29 #include "wps_hostapd.h"
  30 #include "hw_features.h"
  31 #include "wpa_auth_glue.h"
  32 #include "ap_drv_ops.h"
  33 #include "ap_config.h"
  34 #include "p2p_hostapd.h"
  35 #include "gas_serv.h"
  36 #include "dfs.h"
  37 #include "ieee802_11.h"
  38 #include "bss_load.h"
  39 #include "x_snoop.h"
  40 #include "dhcp_snoop.h"
  41 #include "ndisc_snoop.h"
  42
  43
  44 static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason);
  45 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd);
  46 static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd);
  47 static int setup_interface2(struct hostapd_iface *iface);
  48 static void channel_list_update_timeout(void *eloop_ctx, void *timeout_ctx);
  49
  50
  51 int hostapd_for_each_interface(struct hapd_interfaces *interfaces,
  52                                int (*cb)(struct hostapd_iface *iface,
  53                                          void *ctx), void *ctx)
  54 {
  55         size_t i;
  56         int ret;
  57
  58         for (i = 0; i < interfaces->count; i++) {
  59                 ret = cb(interfaces->iface[i], ctx);
  60                 if (ret)
  61                         return ret;
  62         }
  63
  64         return 0;
  65 }
  66
  67
  68 static void hostapd_reload_bss(struct hostapd_data *hapd)
  69 {
  70         struct hostapd_ssid *ssid;
  71
  72 #ifndef CONFIG_NO_RADIUS
  73         radius_client_reconfig(hapd->radius, hapd->conf->radius);
  74 #endif /* CONFIG_NO_RADIUS */
  75
  76         ssid = &hapd->conf->ssid;
  77         if (!ssid->wpa_psk_set && ssid->wpa_psk && !ssid->wpa_psk->next &&
  78             ssid->wpa_passphrase_set && ssid->wpa_passphrase) {
  79                 /*
  80                  * Force PSK to be derived again since SSID or passphrase may
  81                  * have changed.
  82                  */
  83                 os_free(ssid->wpa_psk);
  84                 ssid->wpa_psk = NULL;
  85         }
  86         if (hostapd_setup_wpa_psk(hapd->conf)) {
  87                 wpa_printf(MSG_ERROR, "Failed to re-configure WPA PSK "
  88                            "after reloading configuration");
  89         }
  90
  91         if (hapd->conf->ieee802_1x || hapd->conf->wpa)
  92                 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 1);
  93         else
  94                 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 0);
  95
  96         if ((hapd->conf->wpa || hapd->conf->osen) && hapd->wpa_auth == NULL) {
  97                 hostapd_setup_wpa(hapd);
  98                 if (hapd->wpa_auth)
  99                         wpa_init_keys(hapd->wpa_auth);
 100         } else if (hapd->conf->wpa) {
 101                 const u8 *wpa_ie;
 102                 size_t wpa_ie_len;
 103                 hostapd_reconfig_wpa(hapd);
 104                 wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len);
 105                 if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len))
 106                         wpa_printf(MSG_ERROR, "Failed to configure WPA IE for "
 107                                    "the kernel driver.");
 108         } else if (hapd->wpa_auth) {
 109                 wpa_deinit(hapd->wpa_auth);
 110                 hapd->wpa_auth = NULL;
 111                 hostapd_set_privacy(hapd, 0);
 112                 hostapd_setup_encryption(hapd->conf->iface, hapd);
 113                 hostapd_set_generic_elem(hapd, (u8 *) "", 0);
 114         }
 115
 116         ieee802_11_set_beacon(hapd);
 117         hostapd_update_wps(hapd);
 118
 119         if (hapd->conf->ssid.ssid_set &&
 120             hostapd_set_ssid(hapd, hapd->conf->ssid.ssid,
 121                              hapd->conf->ssid.ssid_len)) {
 122                 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
 123                 /* try to continue */
 124         }
 125         wpa_printf(MSG_DEBUG, "Reconfigured interface %s", hapd->conf->iface);
 126 }
 127
 128
 129 static void hostapd_clear_old(struct hostapd_iface *iface)
 130 {
 131         size_t j;
 132
 133         /*
 134          * Deauthenticate all stations since the new configuration may not
 135          * allow them to use the BSS anymore.
 136          */
 137         for (j = 0; j < iface->num_bss; j++) {
 138                 hostapd_flush_old_stations(iface->bss[j],
 139                                            WLAN_REASON_PREV_AUTH_NOT_VALID);
 140                 hostapd_broadcast_wep_clear(iface->bss[j]);
 141
 142 #ifndef CONFIG_NO_RADIUS
 143                 /* TODO: update dynamic data based on changed configuration
 144                  * items (e.g., open/close sockets, etc.) */
 145                 radius_client_flush(iface->bss[j]->radius, 0);
 146 #endif /* CONFIG_NO_RADIUS */
 147         }
 148 }
 149
 150
 151 int hostapd_reload_config(struct hostapd_iface *iface)
 152 {
 153         struct hostapd_data *hapd = iface->bss[0];
 154         struct hostapd_config *newconf, *oldconf;
 155         size_t j;
 156
 157         if (iface->config_fname == NULL) {
 158                 /* Only in-memory config in use - assume it has been updated */
 159                 hostapd_clear_old(iface);
 160                 for (j = 0; j < iface->num_bss; j++)
 161                         hostapd_reload_bss(iface->bss[j]);
 162                 return 0;
 163         }
 164
 165         if (iface->interfaces == NULL ||
 166             iface->interfaces->config_read_cb == NULL)
 167                 return -1;
 168         newconf = iface->interfaces->config_read_cb(iface->config_fname);
 169         if (newconf == NULL)
 170                 return -1;
 171
 172         hostapd_clear_old(iface);
 173
 174         oldconf = hapd->iconf;
 175         iface->conf = newconf;
 176
 177         for (j = 0; j < iface->num_bss; j++) {
 178                 hapd = iface->bss[j];
 179                 hapd->iconf = newconf;
 180                 hapd->iconf->channel = oldconf->channel;
 181                 hapd->iconf->secondary_channel = oldconf->secondary_channel;
 182                 hapd->iconf->ieee80211n = oldconf->ieee80211n;
 183                 hapd->iconf->ieee80211ac = oldconf->ieee80211ac;
 184                 hapd->iconf->ht_capab = oldconf->ht_capab;
 185                 hapd->iconf->vht_capab = oldconf->vht_capab;
 186                 hapd->iconf->vht_oper_chwidth = oldconf->vht_oper_chwidth;
 187                 hapd->iconf->vht_oper_centr_freq_seg0_idx =
 188                         oldconf->vht_oper_centr_freq_seg0_idx;
 189                 hapd->iconf->vht_oper_centr_freq_seg1_idx =
 190                         oldconf->vht_oper_centr_freq_seg1_idx;
 191                 hapd->conf = newconf->bss[j];
 192                 hostapd_reload_bss(hapd);
 193         }
 194
 195         hostapd_config_free(oldconf);
 196
 197
 198         return 0;
 199 }
 200
 201
 202 static void hostapd_broadcast_key_clear_iface(struct hostapd_data *hapd,
 203                                               char *ifname)
 204 {
 205         int i;
 206
 207         for (i = 0; i < NUM_WEP_KEYS; i++) {
 208                 if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE, NULL, i,
 209                                         0, NULL, 0, NULL, 0)) {
 210                         wpa_printf(MSG_DEBUG, "Failed to clear default "
 211                                    "encryption keys (ifname=%s keyidx=%d)",
 212                                    ifname, i);
 213                 }
 214         }
 215 #ifdef CONFIG_IEEE80211W
 216         if (hapd->conf->ieee80211w) {
 217                 for (i = NUM_WEP_KEYS; i < NUM_WEP_KEYS + 2; i++) {
 218                         if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE,
 219                                                 NULL, i, 0, NULL,
 220                                                 0, NULL, 0)) {
 221                                 wpa_printf(MSG_DEBUG, "Failed to clear "
 222                                            "default mgmt encryption keys "
 223                                            "(ifname=%s keyidx=%d)", ifname, i);
 224                         }
 225                 }
 226         }
 227 #endif /* CONFIG_IEEE80211W */
 228 }
 229
 230
 231 static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd)
 232 {
 233         hostapd_broadcast_key_clear_iface(hapd, hapd->conf->iface);
 234         return 0;
 235 }
 236
 237
 238 static int hostapd_broadcast_wep_set(struct hostapd_data *hapd)
 239 {
 240         int errors = 0, idx;
 241         struct hostapd_ssid *ssid = &hapd->conf->ssid;
 242
 243         idx = ssid->wep.idx;
 244         if (ssid->wep.default_len &&
 245             hostapd_drv_set_key(hapd->conf->iface,
 246                                 hapd, WPA_ALG_WEP, broadcast_ether_addr, idx,
 247                                 1, NULL, 0, ssid->wep.key[idx],
 248                                 ssid->wep.len[idx])) {
 249                 wpa_printf(MSG_WARNING, "Could not set WEP encryption.");
 250                 errors++;
 251         }
 252
 253         return errors;
 254 }
 255
 256
 257 static void hostapd_free_hapd_data(struct hostapd_data *hapd)
 258 {
 259         if (!hapd->started) {
 260                 wpa_printf(MSG_ERROR, "%s: Interface %s wasn't started",
 261                            __func__, hapd->conf->iface);
 262                 return;
 263         }
 264         hapd->started = 0;
 265
 266         wpa_printf(MSG_DEBUG, "%s(%s)", __func__, hapd->conf->iface);
 267         iapp_deinit(hapd->iapp);
 268         hapd->iapp = NULL;
 269         accounting_deinit(hapd);
 270         hostapd_deinit_wpa(hapd);
 271         vlan_deinit(hapd);
 272         hostapd_acl_deinit(hapd);
 273 #ifndef CONFIG_NO_RADIUS
 274         radius_client_deinit(hapd->radius);
 275         hapd->radius = NULL;
 276         radius_das_deinit(hapd->radius_das);
 277         hapd->radius_das = NULL;
 278 #endif /* CONFIG_NO_RADIUS */
 279
 280         hostapd_deinit_wps(hapd);
 281
 282         authsrv_deinit(hapd);
 283
 284         if (hapd->interface_added) {
 285                 hapd->interface_added = 0;
 286                 if (hostapd_if_remove(hapd, WPA_IF_AP_BSS, hapd->conf->iface)) {
 287                         wpa_printf(MSG_WARNING,
 288                                    "Failed to remove BSS interface %s",
 289                                    hapd->conf->iface);
 290                         hapd->interface_added = 1;
 291                 } else {
 292                         /*
 293                          * Since this was a dynamically added interface, the
 294                          * driver wrapper may have removed its internal instance
 295                          * and hapd->drv_priv is not valid anymore.
 296                          */
 297                         hapd->drv_priv = NULL;
 298                 }
 299         }
 300
 301         os_free(hapd->probereq_cb);
 302         hapd->probereq_cb = NULL;
 303
 304 #ifdef CONFIG_P2P
 305         wpabuf_free(hapd->p2p_beacon_ie);
 306         hapd->p2p_beacon_ie = NULL;
 307         wpabuf_free(hapd->p2p_probe_resp_ie);
 308         hapd->p2p_probe_resp_ie = NULL;
 309 #endif /* CONFIG_P2P */
 310
 311         wpabuf_free(hapd->time_adv);
 312
 313 #ifdef CONFIG_INTERWORKING
 314         gas_serv_deinit(hapd);
 315 #endif /* CONFIG_INTERWORKING */
 316
 317         bss_load_update_deinit(hapd);
 318         ndisc_snoop_deinit(hapd);
 319         dhcp_snoop_deinit(hapd);
 320         x_snoop_deinit(hapd);
 321
 322 #ifdef CONFIG_SQLITE
 323         bin_clear_free(hapd->tmp_eap_user.identity,
 324                        hapd->tmp_eap_user.identity_len);
 325         bin_clear_free(hapd->tmp_eap_user.password,
 326                        hapd->tmp_eap_user.password_len);
 327 #endif /* CONFIG_SQLITE */
 328 }
 329
 330
 331 /**
 332  * hostapd_cleanup - Per-BSS cleanup (deinitialization)
 333  * @hapd: Pointer to BSS data
 334  *
 335  * This function is used to free all per-BSS data structures and resources.
 336  * Most of the modules that are initialized in hostapd_setup_bss() are
 337  * deinitialized here.
 338  */
 339 static void hostapd_cleanup(struct hostapd_data *hapd)
 340 {
 341         wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s))", __func__, hapd,
 342                    hapd->conf->iface);
 343         if (hapd->iface->interfaces &&
 344             hapd->iface->interfaces->ctrl_iface_deinit)
 345                 hapd->iface->interfaces->ctrl_iface_deinit(hapd);
 346         hostapd_free_hapd_data(hapd);
 347 }
 348
 349
 350 static void hostapd_cleanup_iface_partial(struct hostapd_iface *iface)
 351 {
 352         wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
 353         hostapd_free_hw_features(iface->hw_features, iface->num_hw_features);
 354         iface->hw_features = NULL;
 355         os_free(iface->current_rates);
 356         iface->current_rates = NULL;
 357         os_free(iface->basic_rates);
 358         iface->basic_rates = NULL;
 359         ap_list_deinit(iface);
 360 }
 361
 362
 363 /**
 364  * hostapd_cleanup_iface - Complete per-interface cleanup
 365  * @iface: Pointer to interface data
 366  *
 367  * This function is called after per-BSS data structures are deinitialized
 368  * with hostapd_cleanup().
 369  */
 370 static void hostapd_cleanup_iface(struct hostapd_iface *iface)
 371 {
 372         wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
 373         eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
 374
 375         hostapd_cleanup_iface_partial(iface);
 376         hostapd_config_free(iface->conf);
 377         iface->conf = NULL;
 378
 379         os_free(iface->config_fname);
 380         os_free(iface->bss);
 381         wpa_printf(MSG_DEBUG, "%s: free iface=%p", __func__, iface);
 382         os_free(iface);
 383 }
 384
 385
 386 static void hostapd_clear_wep(struct hostapd_data *hapd)
 387 {
 388         if (hapd->drv_priv && !hapd->iface->driver_ap_teardown) {
 389                 hostapd_set_privacy(hapd, 0);
 390                 hostapd_broadcast_wep_clear(hapd);
 391         }
 392 }
 393
 394
 395 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd)
 396 {
 397         int i;
 398
 399         hostapd_broadcast_wep_set(hapd);
 400
 401         if (hapd->conf->ssid.wep.default_len) {
 402                 hostapd_set_privacy(hapd, 1);
 403                 return 0;
 404         }
 405
 406         /*
 407          * When IEEE 802.1X is not enabled, the driver may need to know how to
 408          * set authentication algorithms for static WEP.
 409          */
 410         hostapd_drv_set_authmode(hapd, hapd->conf->auth_algs);
 411
 412         for (i = 0; i < 4; i++) {
 413                 if (hapd->conf->ssid.wep.key[i] &&
 414                     hostapd_drv_set_key(iface, hapd, WPA_ALG_WEP, NULL, i,
 415                                         i == hapd->conf->ssid.wep.idx, NULL, 0,
 416                                         hapd->conf->ssid.wep.key[i],
 417                                         hapd->conf->ssid.wep.len[i])) {
 418                         wpa_printf(MSG_WARNING, "Could not set WEP "
 419                                    "encryption.");
 420                         return -1;
 421                 }
 422                 if (hapd->conf->ssid.wep.key[i] &&
 423                     i == hapd->conf->ssid.wep.idx)
 424                         hostapd_set_privacy(hapd, 1);
 425         }
 426
 427         return 0;
 428 }
 429
 430
 431 static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason)
 432 {
 433         int ret = 0;
 434         u8 addr[ETH_ALEN];
 435
 436         if (hostapd_drv_none(hapd) || hapd->drv_priv == NULL)
 437                 return 0;
 438
 439         if (!hapd->iface->driver_ap_teardown) {
 440                 wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
 441                         "Flushing old station entries");
 442
 443                 if (hostapd_flush(hapd)) {
 444                         wpa_msg(hapd->msg_ctx, MSG_WARNING,
 445                                 "Could not connect to kernel driver");
 446                         ret = -1;
 447                 }
 448         }
 449         wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "Deauthenticate all stations");
 450         os_memset(addr, 0xff, ETH_ALEN);
 451         hostapd_drv_sta_deauth(hapd, addr, reason);
 452         hostapd_free_stas(hapd);
 453
 454         return ret;
 455 }
 456
 457
 458 static void hostapd_bss_deinit_no_free(struct hostapd_data *hapd)
 459 {
 460         hostapd_free_stas(hapd);
 461         hostapd_flush_old_stations(hapd, WLAN_REASON_DEAUTH_LEAVING);
 462         hostapd_clear_wep(hapd);
 463 }
 464
 465
 466 /**
 467  * hostapd_validate_bssid_configuration - Validate BSSID configuration
 468  * @iface: Pointer to interface data
 469  * Returns: 0 on success, -1 on failure
 470  *
 471  * This function is used to validate that the configured BSSIDs are valid.
 472  */
 473 static int hostapd_validate_bssid_configuration(struct hostapd_iface *iface)
 474 {
 475         u8 mask[ETH_ALEN] = { 0 };
 476         struct hostapd_data *hapd = iface->bss[0];
 477         unsigned int i = iface->conf->num_bss, bits = 0, j;
 478         int auto_addr = 0;
 479
 480         if (hostapd_drv_none(hapd))
 481                 return 0;
 482
 483         /* Generate BSSID mask that is large enough to cover the BSSIDs. */
 484
 485         /* Determine the bits necessary to cover the number of BSSIDs. */
 486         for (i--; i; i >>= 1)
 487                 bits++;
 488
 489         /* Determine the bits necessary to any configured BSSIDs,
 490            if they are higher than the number of BSSIDs. */
 491         for (j = 0; j < iface->conf->num_bss; j++) {
 492                 if (hostapd_mac_comp_empty(iface->conf->bss[j]->bssid) == 0) {
 493                         if (j)
 494                                 auto_addr++;
 495                         continue;
 496                 }
 497
 498                 for (i = 0; i < ETH_ALEN; i++) {
 499                         mask[i] |=
 500                                 iface->conf->bss[j]->bssid[i] ^
 501                                 hapd->own_addr[i];
 502                 }
 503         }
 504
 505         if (!auto_addr)
 506                 goto skip_mask_ext;
 507
 508         for (i = 0; i < ETH_ALEN && mask[i] == 0; i++)
 509                 ;
 510         j = 0;
 511         if (i < ETH_ALEN) {
 512                 j = (5 - i) * 8;
 513
 514                 while (mask[i] != 0) {
 515                         mask[i] >>= 1;
 516                         j++;
 517                 }
 518         }
 519
 520         if (bits < j)
 521                 bits = j;
 522
 523         if (bits > 40) {
 524                 wpa_printf(MSG_ERROR, "Too many bits in the BSSID mask (%u)",
 525                            bits);
 526                 return -1;
 527         }
 528
 529         os_memset(mask, 0xff, ETH_ALEN);
 530         j = bits / 8;
 531         for (i = 5; i > 5 - j; i--)
 532                 mask[i] = 0;
 533         j = bits % 8;
 534         while (j--)
 535                 mask[i] <<= 1;
 536
 537 skip_mask_ext:
 538         wpa_printf(MSG_DEBUG, "BSS count %lu, BSSID mask " MACSTR " (%d bits)",
 539                    (unsigned long) iface->conf->num_bss, MAC2STR(mask), bits);
 540
 541         if (!auto_addr)
 542                 return 0;
 543
 544         for (i = 0; i < ETH_ALEN; i++) {
 545                 if ((hapd->own_addr[i] & mask[i]) != hapd->own_addr[i]) {
 546                         wpa_printf(MSG_ERROR, "Invalid BSSID mask " MACSTR
 547                                    " for start address " MACSTR ".",
 548                                    MAC2STR(mask), MAC2STR(hapd->own_addr));
 549                         wpa_printf(MSG_ERROR, "Start address must be the "
 550                                    "first address in the block (i.e., addr "
 551                                    "AND mask == addr).");
 552                         return -1;
 553                 }
 554         }
 555
 556         return 0;
 557 }
 558
 559
 560 static int mac_in_conf(struct hostapd_config *conf, const void *a)
 561 {
 562         size_t i;
 563
 564         for (i = 0; i < conf->num_bss; i++) {
 565                 if (hostapd_mac_comp(conf->bss[i]->bssid, a) == 0) {
 566                         return 1;
 567                 }
 568         }
 569
 570         return 0;
 571 }
 572
 573
 574 #ifndef CONFIG_NO_RADIUS
 575
 576 static int hostapd_das_nas_mismatch(struct hostapd_data *hapd,
 577                                     struct radius_das_attrs *attr)
 578 {
 579         if (attr->nas_identifier &&
 580             (!hapd->conf->nas_identifier ||
 581              os_strlen(hapd->conf->nas_identifier) !=
 582              attr->nas_identifier_len ||
 583              os_memcmp(hapd->conf->nas_identifier, attr->nas_identifier,
 584                        attr->nas_identifier_len) != 0)) {
 585                 wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-Identifier mismatch");
 586                 return 1;
 587         }
 588
 589         if (attr->nas_ip_addr &&
 590             (hapd->conf->own_ip_addr.af != AF_INET ||
 591              os_memcmp(&hapd->conf->own_ip_addr.u.v4, attr->nas_ip_addr, 4) !=
 592              0)) {
 593                 wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-IP-Address mismatch");
 594                 return 1;
 595         }
 596
 597 #ifdef CONFIG_IPV6
 598         if (attr->nas_ipv6_addr &&
 599             (hapd->conf->own_ip_addr.af != AF_INET6 ||
 600              os_memcmp(&hapd->conf->own_ip_addr.u.v6, attr->nas_ipv6_addr, 16)
 601              != 0)) {
 602                 wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-IPv6-Address mismatch");
 603                 return 1;
 604         }
 605 #endif /* CONFIG_IPV6 */
 606
 607         return 0;
 608 }
 609
 610
 611 static struct sta_info * hostapd_das_find_sta(struct hostapd_data *hapd,
 612                                               struct radius_das_attrs *attr)
 613 {
 614         struct sta_info *sta = NULL;
 615         char buf[128];
 616
 617         if (attr->sta_addr)
 618                 sta = ap_get_sta(hapd, attr->sta_addr);
 619
 620         if (sta == NULL && attr->acct_session_id &&
 621             attr->acct_session_id_len == 17) {
 622                 for (sta = hapd->sta_list; sta; sta = sta->next) {
 623                         os_snprintf(buf, sizeof(buf), "%08X-%08X",
 624                                     sta->acct_session_id_hi,
 625                                     sta->acct_session_id_lo);
 626                         if (os_memcmp(attr->acct_session_id, buf, 17) == 0)
 627                                 break;
 628                 }
 629         }
 630
 631         if (sta == NULL && attr->cui) {
 632                 for (sta = hapd->sta_list; sta; sta = sta->next) {
 633                         struct wpabuf *cui;
 634                         cui = ieee802_1x_get_radius_cui(sta->eapol_sm);
 635                         if (cui && wpabuf_len(cui) == attr->cui_len &&
 636                             os_memcmp(wpabuf_head(cui), attr->cui,
 637                                       attr->cui_len) == 0)
 638                                 break;
 639                 }
 640         }
 641
 642         if (sta == NULL && attr->user_name) {
 643                 for (sta = hapd->sta_list; sta; sta = sta->next) {
 644                         u8 *identity;
 645                         size_t identity_len;
 646                         identity = ieee802_1x_get_identity(sta->eapol_sm,
 647                                                            &identity_len);
 648                         if (identity &&
 649                             identity_len == attr->user_name_len &&
 650                             os_memcmp(identity, attr->user_name, identity_len)
 651                             == 0)
 652                                 break;
 653                 }
 654         }
 655
 656         return sta;
 657 }
 658
 659
 660 static enum radius_das_res
 661 hostapd_das_disconnect(void *ctx, struct radius_das_attrs *attr)
 662 {
 663         struct hostapd_data *hapd = ctx;
 664         struct sta_info *sta;
 665
 666         if (hostapd_das_nas_mismatch(hapd, attr))
 667                 return RADIUS_DAS_NAS_MISMATCH;
 668
 669         sta = hostapd_das_find_sta(hapd, attr);
 670         if (sta == NULL)
 671                 return RADIUS_DAS_SESSION_NOT_FOUND;
 672
 673         wpa_auth_pmksa_remove(hapd->wpa_auth, sta->addr);
 674
 675         hostapd_drv_sta_deauth(hapd, sta->addr,
 676                                WLAN_REASON_PREV_AUTH_NOT_VALID);
 677         ap_sta_deauthenticate(hapd, sta, WLAN_REASON_PREV_AUTH_NOT_VALID);
 678
 679         return RADIUS_DAS_SUCCESS;
 680 }
 681
 682 #endif /* CONFIG_NO_RADIUS */
 683
 684
 685 /**
 686  * hostapd_setup_bss - Per-BSS setup (initialization)
 687  * @hapd: Pointer to BSS data
 688  * @first: Whether this BSS is the first BSS of an interface; -1 = not first,
 689  *      but interface may exist
 690  *
 691  * This function is used to initialize all per-BSS data structures and
 692  * resources. This gets called in a loop for each BSS when an interface is
 693  * initialized. Most of the modules that are initialized here will be
 694  * deinitialized in hostapd_cleanup().
 695  */
 696 static int hostapd_setup_bss(struct hostapd_data *hapd, int first)
 697 {
 698         struct hostapd_bss_config *conf = hapd->conf;
 699         u8 ssid[HOSTAPD_MAX_SSID_LEN + 1];
 700         int ssid_len, set_ssid;
 701         char force_ifname[IFNAMSIZ];
 702         u8 if_addr[ETH_ALEN];
 703         int flush_old_stations = 1;
 704
 705         wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s), first=%d)",
 706                    __func__, hapd, conf->iface, first);
 707
 708 #ifdef EAP_SERVER_TNC
 709         if (conf->tnc && tncs_global_init() < 0) {
 710                 wpa_printf(MSG_ERROR, "Failed to initialize TNCS");
 711                 return -1;
 712         }
 713 #endif /* EAP_SERVER_TNC */
 714
 715         if (hapd->started) {
 716                 wpa_printf(MSG_ERROR, "%s: Interface %s was already started",
 717                            __func__, conf->iface);
 718                 return -1;
 719         }
 720         hapd->started = 1;
 721
 722         if (!first || first == -1) {
 723                 if (hostapd_mac_comp_empty(conf->bssid) == 0) {
 724                         /* Allocate the next available BSSID. */
 725                         do {
 726                                 inc_byte_array(hapd->own_addr, ETH_ALEN);
 727                         } while (mac_in_conf(hapd->iconf, hapd->own_addr));
 728                 } else {
 729                         /* Allocate the configured BSSID. */
 730                         os_memcpy(hapd->own_addr, conf->bssid, ETH_ALEN);
 731
 732                         if (hostapd_mac_comp(hapd->own_addr,
 733                                              hapd->iface->bss[0]->own_addr) ==
 734                             0) {
 735                                 wpa_printf(MSG_ERROR, "BSS '%s' may not have "
 736                                            "BSSID set to the MAC address of "
 737                                            "the radio", conf->iface);
 738                                 return -1;
 739                         }
 740                 }
 741
 742                 hapd->interface_added = 1;
 743                 if (hostapd_if_add(hapd->iface->bss[0], WPA_IF_AP_BSS,
 744                                    conf->iface, hapd->own_addr, hapd,
 745                                    &hapd->drv_priv, force_ifname, if_addr,
 746                                    conf->bridge[0] ? conf->bridge : NULL,
 747                                    first == -1)) {
 748                         wpa_printf(MSG_ERROR, "Failed to add BSS (BSSID="
 749                                    MACSTR ")", MAC2STR(hapd->own_addr));
 750                         hapd->interface_added = 0;
 751                         return -1;
 752                 }
 753         }
 754
 755         if (conf->wmm_enabled < 0)
 756                 conf->wmm_enabled = hapd->iconf->ieee80211n;
 757
 758 #ifdef CONFIG_MESH
 759         if (hapd->iface->mconf == NULL)
 760                 flush_old_stations = 0;
 761 #endif /* CONFIG_MESH */
 762
 763         if (flush_old_stations)
 764                 hostapd_flush_old_stations(hapd,
 765                                            WLAN_REASON_PREV_AUTH_NOT_VALID);
 766         hostapd_set_privacy(hapd, 0);
 767
 768         hostapd_broadcast_wep_clear(hapd);
 769         if (hostapd_setup_encryption(conf->iface, hapd))
 770                 return -1;
 771
 772         /*
 773          * Fetch the SSID from the system and use it or,
 774          * if one was specified in the config file, verify they
 775          * match.
 776          */
 777         ssid_len = hostapd_get_ssid(hapd, ssid, sizeof(ssid));
 778         if (ssid_len < 0) {
 779                 wpa_printf(MSG_ERROR, "Could not read SSID from system");
 780                 return -1;
 781         }
 782         if (conf->ssid.ssid_set) {
 783                 /*
 784                  * If SSID is specified in the config file and it differs
 785                  * from what is being used then force installation of the
 786                  * new SSID.
 787                  */
 788                 set_ssid = (conf->ssid.ssid_len != (size_t) ssid_len ||
 789                             os_memcmp(conf->ssid.ssid, ssid, ssid_len) != 0);
 790         } else {
 791                 /*
 792                  * No SSID in the config file; just use the one we got
 793                  * from the system.
 794                  */
 795                 set_ssid = 0;
 796                 conf->ssid.ssid_len = ssid_len;
 797                 os_memcpy(conf->ssid.ssid, ssid, conf->ssid.ssid_len);
 798         }
 799
 800         if (!hostapd_drv_none(hapd)) {
 801                 wpa_printf(MSG_ERROR, "Using interface %s with hwaddr " MACSTR
 802                            " and ssid \"%s\"",
 803                            conf->iface, MAC2STR(hapd->own_addr),
 804                            wpa_ssid_txt(conf->ssid.ssid, conf->ssid.ssid_len));
 805         }
 806
 807         if (hostapd_setup_wpa_psk(conf)) {
 808                 wpa_printf(MSG_ERROR, "WPA-PSK setup failed.");
 809                 return -1;
 810         }
 811
 812         /* Set SSID for the kernel driver (to be used in beacon and probe
 813          * response frames) */
 814         if (set_ssid && hostapd_set_ssid(hapd, conf->ssid.ssid,
 815                                          conf->ssid.ssid_len)) {
 816                 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
 817                 return -1;
 818         }
 819
 820         if (wpa_debug_level <= MSG_MSGDUMP)
 821                 conf->radius->msg_dumps = 1;
 822 #ifndef CONFIG_NO_RADIUS
 823         hapd->radius = radius_client_init(hapd, conf->radius);
 824         if (hapd->radius == NULL) {
 825                 wpa_printf(MSG_ERROR, "RADIUS client initialization failed.");
 826                 return -1;
 827         }
 828
 829         if (conf->radius_das_port) {
 830                 struct radius_das_conf das_conf;
 831                 os_memset(&das_conf, 0, sizeof(das_conf));
 832                 das_conf.port = conf->radius_das_port;
 833                 das_conf.shared_secret = conf->radius_das_shared_secret;
 834                 das_conf.shared_secret_len =
 835                         conf->radius_das_shared_secret_len;
 836                 das_conf.client_addr = &conf->radius_das_client_addr;
 837                 das_conf.time_window = conf->radius_das_time_window;
 838                 das_conf.require_event_timestamp =
 839                         conf->radius_das_require_event_timestamp;
 840                 das_conf.ctx = hapd;
 841                 das_conf.disconnect = hostapd_das_disconnect;
 842                 hapd->radius_das = radius_das_init(&das_conf);
 843                 if (hapd->radius_das == NULL) {
 844                         wpa_printf(MSG_ERROR, "RADIUS DAS initialization "
 845                                    "failed.");
 846                         return -1;
 847                 }
 848         }
 849 #endif /* CONFIG_NO_RADIUS */
 850
 851         if (hostapd_acl_init(hapd)) {
 852                 wpa_printf(MSG_ERROR, "ACL initialization failed.");
 853                 return -1;
 854         }
 855         if (hostapd_init_wps(hapd, conf))
 856                 return -1;
 857
 858         if (authsrv_init(hapd) < 0)
 859                 return -1;
 860
 861         if (ieee802_1x_init(hapd)) {
 862                 wpa_printf(MSG_ERROR, "IEEE 802.1X initialization failed.");
 863                 return -1;
 864         }
 865
 866         if ((conf->wpa || conf->osen) && hostapd_setup_wpa(hapd))
 867                 return -1;
 868
 869         if (accounting_init(hapd)) {
 870                 wpa_printf(MSG_ERROR, "Accounting initialization failed.");
 871                 return -1;
 872         }
 873
 874         if (conf->ieee802_11f &&
 875             (hapd->iapp = iapp_init(hapd, conf->iapp_iface)) == NULL) {
 876                 wpa_printf(MSG_ERROR, "IEEE 802.11F (IAPP) initialization "
 877                            "failed.");
 878                 return -1;
 879         }
 880
 881 #ifdef CONFIG_INTERWORKING
 882         if (gas_serv_init(hapd)) {
 883                 wpa_printf(MSG_ERROR, "GAS server initialization failed");
 884                 return -1;
 885         }
 886
 887         if (conf->qos_map_set_len &&
 888             hostapd_drv_set_qos_map(hapd, conf->qos_map_set,
 889                                     conf->qos_map_set_len)) {
 890                 wpa_printf(MSG_ERROR, "Failed to initialize QoS Map");
 891                 return -1;
 892         }
 893 #endif /* CONFIG_INTERWORKING */
 894
 895         if (conf->bss_load_update_period && bss_load_update_init(hapd)) {
 896                 wpa_printf(MSG_ERROR, "BSS Load initialization failed");
 897                 return -1;
 898         }
 899
 900         if (conf->proxy_arp) {
 901                 if (x_snoop_init(hapd)) {
 902                         wpa_printf(MSG_ERROR,
 903                                    "Generic snooping infrastructure initialization failed");
 904                         return -1;
 905                 }
 906
 907                 if (dhcp_snoop_init(hapd)) {
 908                         wpa_printf(MSG_ERROR,
 909                                    "DHCP snooping initialization failed");
 910                         return -1;
 911                 }
 912
 913                 if (ndisc_snoop_init(hapd)) {
 914                         wpa_printf(MSG_ERROR,
 915                                    "Neighbor Discovery snooping initialization failed");
 916                         return -1;
 917                 }
 918         }
 919
 920         if (!hostapd_drv_none(hapd) && vlan_init(hapd)) {
 921                 wpa_printf(MSG_ERROR, "VLAN initialization failed.");
 922                 return -1;
 923         }
 924
 925         if (!conf->start_disabled && ieee802_11_set_beacon(hapd) < 0)
 926                 return -1;
 927
 928         if (hapd->wpa_auth && wpa_init_keys(hapd->wpa_auth) < 0)
 929                 return -1;
 930
 931         if (hapd->driver && hapd->driver->set_operstate)
 932                 hapd->driver->set_operstate(hapd->drv_priv, 1);
 933
 934         return 0;
 935 }
 936
 937
 938 static void hostapd_tx_queue_params(struct hostapd_iface *iface)
 939 {
 940         struct hostapd_data *hapd = iface->bss[0];
 941         int i;
 942         struct hostapd_tx_queue_params *p;
 943
 944 #ifdef CONFIG_MESH
 945         if (iface->mconf == NULL)
 946                 return;
 947 #endif /* CONFIG_MESH */
 948
 949         for (i = 0; i < NUM_TX_QUEUES; i++) {
 950                 p = &iface->conf->tx_queue[i];
 951
 952                 if (hostapd_set_tx_queue_params(hapd, i, p->aifs, p->cwmin,
 953                                                 p->cwmax, p->burst)) {
 954                         wpa_printf(MSG_DEBUG, "Failed to set TX queue "
 955                                    "parameters for queue %d.", i);
 956                         /* Continue anyway */
 957                 }
 958         }
 959 }
 960
 961
 962 static int hostapd_set_acl_list(struct hostapd_data *hapd,
 963                                 struct mac_acl_entry *mac_acl,
 964                                 int n_entries, u8 accept_acl)
 965 {
 966         struct hostapd_acl_params *acl_params;
 967         int i, err;
 968
 969         acl_params = os_zalloc(sizeof(*acl_params) +
 970                                (n_entries * sizeof(acl_params->mac_acl[0])));
 971         if (!acl_params)
 972                 return -ENOMEM;
 973
 974         for (i = 0; i < n_entries; i++)
 975                 os_memcpy(acl_params->mac_acl[i].addr, mac_acl[i].addr,
 976                           ETH_ALEN);
 977
 978         acl_params->acl_policy = accept_acl;
 979         acl_params->num_mac_acl = n_entries;
 980
 981         err = hostapd_drv_set_acl(hapd, acl_params);
 982
 983         os_free(acl_params);
 984
 985         return err;
 986 }
 987
 988
 989 static void hostapd_set_acl(struct hostapd_data *hapd)
 990 {
 991         struct hostapd_config *conf = hapd->iconf;
 992         int err;
 993         u8 accept_acl;
 994
 995         if (hapd->iface->drv_max_acl_mac_addrs == 0)
 996                 return;
 997
 998         if (conf->bss[0]->macaddr_acl == DENY_UNLESS_ACCEPTED) {
 999                 accept_acl = 1;
1000                 err = hostapd_set_acl_list(hapd, conf->bss[0]->accept_mac,
1001                                            conf->bss[0]->num_accept_mac,
1002                                            accept_acl);
1003                 if (err) {
1004                         wpa_printf(MSG_DEBUG, "Failed to set accept acl");
1005                         return;
1006                 }
1007         } else if (conf->bss[0]->macaddr_acl == ACCEPT_UNLESS_DENIED) {
1008                 accept_acl = 0;
1009                 err = hostapd_set_acl_list(hapd, conf->bss[0]->deny_mac,
1010                                            conf->bss[0]->num_deny_mac,
1011                                            accept_acl);
1012                 if (err) {
1013                         wpa_printf(MSG_DEBUG, "Failed to set deny acl");
1014                         return;
1015                 }
1016         }
1017 }
1018
1019
1020 static int start_ctrl_iface_bss(struct hostapd_data *hapd)
1021 {
1022         if (!hapd->iface->interfaces ||
1023             !hapd->iface->interfaces->ctrl_iface_init)
1024                 return 0;
1025
1026         if (hapd->iface->interfaces->ctrl_iface_init(hapd)) {
1027                 wpa_printf(MSG_ERROR,
1028                            "Failed to setup control interface for %s",
1029                            hapd->conf->iface);
1030                 return -1;
1031         }
1032
1033         return 0;
1034 }
1035
1036
1037 static int start_ctrl_iface(struct hostapd_iface *iface)
1038 {
1039         size_t i;
1040
1041         if (!iface->interfaces || !iface->interfaces->ctrl_iface_init)
1042                 return 0;
1043
1044         for (i = 0; i < iface->num_bss; i++) {
1045                 struct hostapd_data *hapd = iface->bss[i];
1046                 if (iface->interfaces->ctrl_iface_init(hapd)) {
1047                         wpa_printf(MSG_ERROR,
1048                                    "Failed to setup control interface for %s",
1049                                    hapd->conf->iface);
1050                         return -1;
1051                 }
1052         }
1053
1054         return 0;
1055 }
1056
1057
1058 static void channel_list_update_timeout(void *eloop_ctx, void *timeout_ctx)
1059 {
1060         struct hostapd_iface *iface = eloop_ctx;
1061
1062         if (!iface->wait_channel_update) {
1063                 wpa_printf(MSG_INFO, "Channel list update timeout, but interface was not waiting for it");
1064                 return;
1065         }
1066
1067         /*
1068          * It is possible that the existing channel list is acceptable, so try
1069          * to proceed.
1070          */
1071         wpa_printf(MSG_DEBUG, "Channel list update timeout - try to continue anyway");
1072         setup_interface2(iface);
1073 }
1074
1075
1076 void hostapd_channel_list_updated(struct hostapd_iface *iface, int initiator)
1077 {
1078         if (!iface->wait_channel_update || initiator != REGDOM_SET_BY_USER)
1079                 return;
1080
1081         wpa_printf(MSG_DEBUG, "Channel list updated - continue setup");
1082         eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
1083         setup_interface2(iface);
1084 }
1085
1086
1087 static int setup_interface(struct hostapd_iface *iface)
1088 {
1089         struct hostapd_data *hapd = iface->bss[0];
1090         size_t i;
1091
1092         /*
1093          * It is possible that setup_interface() is called after the interface
1094          * was disabled etc., in which case driver_ap_teardown is possibly set
1095          * to 1. Clear it here so any other key/station deletion, which is not
1096          * part of a teardown flow, would also call the relevant driver
1097          * callbacks.
1098          */
1099         iface->driver_ap_teardown = 0;
1100
1101         if (!iface->phy[0]) {
1102                 const char *phy = hostapd_drv_get_radio_name(hapd);
1103                 if (phy) {
1104                         wpa_printf(MSG_DEBUG, "phy: %s", phy);
1105                         os_strlcpy(iface->phy, phy, sizeof(iface->phy));
1106                 }
1107         }
1108
1109         /*
1110          * Make sure that all BSSes get configured with a pointer to the same
1111          * driver interface.
1112          */
1113         for (i = 1; i < iface->num_bss; i++) {
1114                 iface->bss[i]->driver = hapd->driver;
1115                 iface->bss[i]->drv_priv = hapd->drv_priv;
1116         }
1117
1118         if (hostapd_validate_bssid_configuration(iface))
1119                 return -1;
1120
1121         /*
1122          * Initialize control interfaces early to allow external monitoring of
1123          * channel setup operations that may take considerable amount of time
1124          * especially for DFS cases.
1125          */
1126         if (start_ctrl_iface(iface))
1127                 return -1;
1128
1129         if (hapd->iconf->country[0] && hapd->iconf->country[1]) {
1130                 char country[4], previous_country[4];
1131
1132                 hostapd_set_state(iface, HAPD_IFACE_COUNTRY_UPDATE);
1133                 if (hostapd_get_country(hapd, previous_country) < 0)
1134                         previous_country[0] = '\0';
1135
1136                 os_memcpy(country, hapd->iconf->country, 3);
1137                 country[3] = '\0';
1138                 if (hostapd_set_country(hapd, country) < 0) {
1139                         wpa_printf(MSG_ERROR, "Failed to set country code");
1140                         return -1;
1141                 }
1142
1143                 wpa_printf(MSG_DEBUG, "Previous country code %s, new country code %s",
1144                            previous_country, country);
1145
1146                 if (os_strncmp(previous_country, country, 2) != 0) {
1147                         wpa_printf(MSG_DEBUG, "Continue interface setup after channel list update");
1148                         iface->wait_channel_update = 1;
1149                         eloop_register_timeout(5, 0,
1150                                                channel_list_update_timeout,
1151                                                iface, NULL);
1152                         return 0;
1153                 }
1154         }
1155
1156         return setup_interface2(iface);
1157 }
1158
1159
1160 static int setup_interface2(struct hostapd_iface *iface)
1161 {
1162         iface->wait_channel_update = 0;
1163
1164         if (hostapd_get_hw_features(iface)) {
1165                 /* Not all drivers support this yet, so continue without hw
1166                  * feature data. */
1167         } else {
1168                 int ret = hostapd_select_hw_mode(iface);
1169                 if (ret < 0) {
1170                         wpa_printf(MSG_ERROR, "Could not select hw_mode and "
1171                                    "channel. (%d)", ret);
1172                         goto fail;
1173                 }
1174                 if (ret == 1) {
1175                         wpa_printf(MSG_DEBUG, "Interface initialization will be completed in a callback (ACS)");
1176                         return 0;
1177                 }
1178                 ret = hostapd_check_ht_capab(iface);
1179                 if (ret < 0)
1180                         goto fail;
1181                 if (ret == 1) {
1182                         wpa_printf(MSG_DEBUG, "Interface initialization will "
1183                                    "be completed in a callback");
1184                         return 0;
1185                 }
1186
1187                 if (iface->conf->ieee80211h)
1188                         wpa_printf(MSG_DEBUG, "DFS support is enabled");
1189         }
1190         return hostapd_setup_interface_complete(iface, 0);
1191
1192 fail:
1193         hostapd_set_state(iface, HAPD_IFACE_DISABLED);
1194         wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
1195         if (iface->interfaces && iface->interfaces->terminate_on_error)
1196                 eloop_terminate();
1197         return -1;
1198 }
1199
1200
1201 /**
1202  * hostapd_setup_interface_complete - Complete interface setup
1203  *
1204  * This function is called when previous steps in the interface setup has been
1205  * completed. This can also start operations, e.g., DFS, that will require
1206  * additional processing before interface is ready to be enabled. Such
1207  * operations will call this function from eloop callbacks when finished.
1208  */
1209 int hostapd_setup_interface_complete(struct hostapd_iface *iface, int err)
1210 {
1211         struct hostapd_data *hapd = iface->bss[0];
1212         size_t j;
1213         u8 *prev_addr;
1214         int delay_apply_cfg = 0;
1215
1216         if (err)
1217                 goto fail;
1218
1219         wpa_printf(MSG_DEBUG, "Completing interface initialization");
1220         if (iface->conf->channel) {
1221 #ifdef NEED_AP_MLME
1222                 int res;
1223 #endif /* NEED_AP_MLME */
1224
1225                 iface->freq = hostapd_hw_get_freq(hapd, iface->conf->channel);
1226                 wpa_printf(MSG_DEBUG, "Mode: %s  Channel: %d  "
1227                            "Frequency: %d MHz",
1228                            hostapd_hw_mode_txt(iface->conf->hw_mode),
1229                            iface->conf->channel, iface->freq);
1230
1231 #ifdef NEED_AP_MLME
1232                 /* Handle DFS only if it is not offloaded to the driver */
1233                 if (!(iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD)) {
1234                         /* Check DFS */
1235                         res = hostapd_handle_dfs(iface);
1236                         if (res <= 0) {
1237                                 if (res < 0)
1238                                         goto fail;
1239                                 return res;
1240                         }
1241                 }
1242 #endif /* NEED_AP_MLME */
1243
1244 #ifdef CONFIG_MESH
1245                 if (iface->mconf != NULL) {
1246                         wpa_printf(MSG_DEBUG,
1247                                    "%s: Mesh configuration will be applied while joining the mesh network",
1248                                    iface->bss[0]->conf->iface);
1249                         delay_apply_cfg = 1;
1250                 }
1251 #endif /* CONFIG_MESH */
1252
1253                 if (!delay_apply_cfg &&
1254                     hostapd_set_freq(hapd, hapd->iconf->hw_mode, iface->freq,
1255                                      hapd->iconf->channel,
1256                                      hapd->iconf->ieee80211n,
1257                                      hapd->iconf->ieee80211ac,
1258                                      hapd->iconf->secondary_channel,
1259                                      hapd->iconf->vht_oper_chwidth,
1260                                      hapd->iconf->vht_oper_centr_freq_seg0_idx,
1261                                      hapd->iconf->vht_oper_centr_freq_seg1_idx)) {
1262                         wpa_printf(MSG_ERROR, "Could not set channel for "
1263                                    "kernel driver");
1264                         goto fail;
1265                 }
1266         }
1267
1268         if (iface->current_mode) {
1269                 if (hostapd_prepare_rates(iface, iface->current_mode)) {
1270                         wpa_printf(MSG_ERROR, "Failed to prepare rates "
1271                                    "table.");
1272                         hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
1273                                        HOSTAPD_LEVEL_WARNING,
1274                                        "Failed to prepare rates table.");
1275                         goto fail;
1276                 }
1277         }
1278
1279         if (hapd->iconf->rts_threshold > -1 &&
1280             hostapd_set_rts(hapd, hapd->iconf->rts_threshold)) {
1281                 wpa_printf(MSG_ERROR, "Could not set RTS threshold for "
1282                            "kernel driver");
1283                 goto fail;
1284         }
1285
1286         if (hapd->iconf->fragm_threshold > -1 &&
1287             hostapd_set_frag(hapd, hapd->iconf->fragm_threshold)) {
1288                 wpa_printf(MSG_ERROR, "Could not set fragmentation threshold "
1289                            "for kernel driver");
1290                 goto fail;
1291         }
1292
1293         prev_addr = hapd->own_addr;
1294
1295         for (j = 0; j < iface->num_bss; j++) {
1296                 hapd = iface->bss[j];
1297                 if (j)
1298                         os_memcpy(hapd->own_addr, prev_addr, ETH_ALEN);
1299                 if (hostapd_setup_bss(hapd, j == 0)) {
1300                         do {
1301                                 hapd = iface->bss[j];
1302                                 hostapd_bss_deinit_no_free(hapd);
1303                                 hostapd_free_hapd_data(hapd);
1304                         } while (j-- > 0);
1305                         goto fail;
1306                 }
1307                 if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0)
1308                         prev_addr = hapd->own_addr;
1309         }
1310         hapd = iface->bss[0];
1311
1312         hostapd_tx_queue_params(iface);
1313
1314         ap_list_init(iface);
1315
1316         hostapd_set_acl(hapd);
1317
1318         if (hostapd_driver_commit(hapd) < 0) {
1319                 wpa_printf(MSG_ERROR, "%s: Failed to commit driver "
1320                            "configuration", __func__);
1321                 goto fail;
1322         }
1323
1324         /*
1325          * WPS UPnP module can be initialized only when the "upnp_iface" is up.
1326          * If "interface" and "upnp_iface" are the same (e.g., non-bridge
1327          * mode), the interface is up only after driver_commit, so initialize
1328          * WPS after driver_commit.
1329          */
1330         for (j = 0; j < iface->num_bss; j++) {
1331                 if (hostapd_init_wps_complete(iface->bss[j]))
1332                         goto fail;
1333         }
1334
1335         hostapd_set_state(iface, HAPD_IFACE_ENABLED);
1336         wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_ENABLED);
1337         if (hapd->setup_complete_cb)
1338                 hapd->setup_complete_cb(hapd->setup_complete_cb_ctx);
1339
1340         wpa_printf(MSG_DEBUG, "%s: Setup of interface done.",
1341                    iface->bss[0]->conf->iface);
1342         if (iface->interfaces && iface->interfaces->terminate_on_error > 0)
1343                 iface->interfaces->terminate_on_error--;
1344
1345         return 0;
1346
1347 fail:
1348         wpa_printf(MSG_ERROR, "Interface initialization failed");
1349         hostapd_set_state(iface, HAPD_IFACE_DISABLED);
1350         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
1351         if (iface->interfaces && iface->interfaces->terminate_on_error)
1352                 eloop_terminate();
1353         return -1;
1354 }
1355
1356
1357 /**
1358  * hostapd_setup_interface - Setup of an interface
1359  * @iface: Pointer to interface data.
1360  * Returns: 0 on success, -1 on failure
1361  *
1362  * Initializes the driver interface, validates the configuration,
1363  * and sets driver parameters based on the configuration.
1364  * Flushes old stations, sets the channel, encryption,
1365  * beacons, and WDS links based on the configuration.
1366  *
1367  * If interface setup requires more time, e.g., to perform HT co-ex scans, ACS,
1368  * or DFS operations, this function returns 0 before such operations have been
1369  * completed. The pending operations are registered into eloop and will be
1370  * completed from eloop callbacks. Those callbacks end up calling
1371  * hostapd_setup_interface_complete() once setup has been completed.
1372  */
1373 int hostapd_setup_interface(struct hostapd_iface *iface)
1374 {
1375         int ret;
1376
1377         ret = setup_interface(iface);
1378         if (ret) {
1379                 wpa_printf(MSG_ERROR, "%s: Unable to setup interface.",
1380                            iface->bss[0]->conf->iface);
1381                 return -1;
1382         }
1383
1384         return 0;
1385 }
1386
1387
1388 /**
1389  * hostapd_alloc_bss_data - Allocate and initialize per-BSS data
1390  * @hapd_iface: Pointer to interface data
1391  * @conf: Pointer to per-interface configuration
1392  * @bss: Pointer to per-BSS configuration for this BSS
1393  * Returns: Pointer to allocated BSS data
1394  *
1395  * This function is used to allocate per-BSS data structure. This data will be
1396  * freed after hostapd_cleanup() is called for it during interface
1397  * deinitialization.
1398  */
1399 struct hostapd_data *
1400 hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface,
1401                        struct hostapd_config *conf,
1402                        struct hostapd_bss_config *bss)
1403 {
1404         struct hostapd_data *hapd;
1405
1406         hapd = os_zalloc(sizeof(*hapd));
1407         if (hapd == NULL)
1408                 return NULL;
1409
1410         hapd->new_assoc_sta_cb = hostapd_new_assoc_sta;
1411         hapd->iconf = conf;
1412         hapd->conf = bss;
1413         hapd->iface = hapd_iface;
1414         hapd->driver = hapd->iconf->driver;
1415         hapd->ctrl_sock = -1;
1416
1417         return hapd;
1418 }
1419
1420
1421 static void hostapd_bss_deinit(struct hostapd_data *hapd)
1422 {
1423         wpa_printf(MSG_DEBUG, "%s: deinit bss %s", __func__,
1424                    hapd->conf->iface);
1425         hostapd_bss_deinit_no_free(hapd);
1426         hostapd_cleanup(hapd);
1427 }
1428
1429
1430 void hostapd_interface_deinit(struct hostapd_iface *iface)
1431 {
1432         int j;
1433
1434         wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
1435         if (iface == NULL)
1436                 return;
1437
1438 #ifdef CONFIG_IEEE80211N
1439 #ifdef NEED_AP_MLME
1440         hostapd_stop_setup_timers(iface);
1441         eloop_cancel_timeout(ap_ht2040_timeout, iface, NULL);
1442 #endif /* NEED_AP_MLME */
1443 #endif /* CONFIG_IEEE80211N */
1444         eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
1445         iface->wait_channel_update = 0;
1446
1447         for (j = iface->num_bss - 1; j >= 0; j--)
1448                 hostapd_bss_deinit(iface->bss[j]);
1449 }
1450
1451
1452 void hostapd_interface_free(struct hostapd_iface *iface)
1453 {
1454         size_t j;
1455         wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
1456         for (j = 0; j < iface->num_bss; j++) {
1457                 wpa_printf(MSG_DEBUG, "%s: free hapd %p",
1458                            __func__, iface->bss[j]);
1459                 os_free(iface->bss[j]);
1460         }
1461         hostapd_cleanup_iface(iface);
1462 }
1463
1464
1465 /**
1466  * hostapd_init - Allocate and initialize per-interface data
1467  * @config_file: Path to the configuration file
1468  * Returns: Pointer to the allocated interface data or %NULL on failure
1469  *
1470  * This function is used to allocate main data structures for per-interface
1471  * data. The allocated data buffer will be freed by calling
1472  * hostapd_cleanup_iface().
1473  */
1474 struct hostapd_iface * hostapd_init(struct hapd_interfaces *interfaces,
1475                                     const char *config_file)
1476 {
1477         struct hostapd_iface *hapd_iface = NULL;
1478         struct hostapd_config *conf = NULL;
1479         struct hostapd_data *hapd;
1480         size_t i;
1481
1482         hapd_iface = os_zalloc(sizeof(*hapd_iface));
1483         if (hapd_iface == NULL)
1484                 goto fail;
1485
1486         hapd_iface->config_fname = os_strdup(config_file);
1487         if (hapd_iface->config_fname == NULL)
1488                 goto fail;
1489
1490         conf = interfaces->config_read_cb(hapd_iface->config_fname);
1491         if (conf == NULL)
1492                 goto fail;
1493         hapd_iface->conf = conf;
1494
1495         hapd_iface->num_bss = conf->num_bss;
1496         hapd_iface->bss = os_calloc(conf->num_bss,
1497                                     sizeof(struct hostapd_data *));
1498         if (hapd_iface->bss == NULL)
1499                 goto fail;
1500
1501         for (i = 0; i < conf->num_bss; i++) {
1502                 hapd = hapd_iface->bss[i] =
1503                         hostapd_alloc_bss_data(hapd_iface, conf,
1504                                                conf->bss[i]);
1505                 if (hapd == NULL)
1506                         goto fail;
1507                 hapd->msg_ctx = hapd;
1508         }
1509
1510         return hapd_iface;
1511
1512 fail:
1513         wpa_printf(MSG_ERROR, "Failed to set up interface with %s",
1514                    config_file);
1515         if (conf)
1516                 hostapd_config_free(conf);
1517         if (hapd_iface) {
1518                 os_free(hapd_iface->config_fname);
1519                 os_free(hapd_iface->bss);
1520                 wpa_printf(MSG_DEBUG, "%s: free iface %p",
1521                            __func__, hapd_iface);
1522                 os_free(hapd_iface);
1523         }
1524         return NULL;
1525 }
1526
1527
1528 static int ifname_in_use(struct hapd_interfaces *interfaces, const char *ifname)
1529 {
1530         size_t i, j;
1531
1532         for (i = 0; i < interfaces->count; i++) {
1533                 struct hostapd_iface *iface = interfaces->iface[i];
1534                 for (j = 0; j < iface->num_bss; j++) {
1535                         struct hostapd_data *hapd = iface->bss[j];
1536                         if (os_strcmp(ifname, hapd->conf->iface) == 0)
1537                                 return 1;
1538                 }
1539         }
1540
1541         return 0;
1542 }
1543
1544
1545 /**
1546  * hostapd_interface_init_bss - Read configuration file and init BSS data
1547  *
1548  * This function is used to parse configuration file for a BSS. This BSS is
1549  * added to an existing interface sharing the same radio (if any) or a new
1550  * interface is created if this is the first interface on a radio. This
1551  * allocate memory for the BSS. No actual driver operations are started.
1552  *
1553  * This is similar to hostapd_interface_init(), but for a case where the
1554  * configuration is used to add a single BSS instead of all BSSes for a radio.
1555  */
1556 struct hostapd_iface *
1557 hostapd_interface_init_bss(struct hapd_interfaces *interfaces, const char *phy,
1558                            const char *config_fname, int debug)
1559 {
1560         struct hostapd_iface *new_iface = NULL, *iface = NULL;
1561         struct hostapd_data *hapd;
1562         int k;
1563         size_t i, bss_idx;
1564
1565         if (!phy || !*phy)
1566                 return NULL;
1567
1568         for (i = 0; i < interfaces->count; i++) {
1569                 if (os_strcmp(interfaces->iface[i]->phy, phy) == 0) {
1570                         iface = interfaces->iface[i];
1571                         break;
1572                 }
1573         }
1574
1575         wpa_printf(MSG_INFO, "Configuration file: %s (phy %s)%s",
1576                    config_fname, phy, iface ? "" : " --> new PHY");
1577         if (iface) {
1578                 struct hostapd_config *conf;
1579                 struct hostapd_bss_config **tmp_conf;
1580                 struct hostapd_data **tmp_bss;
1581                 struct hostapd_bss_config *bss;
1582                 const char *ifname;
1583
1584                 /* Add new BSS to existing iface */
1585                 conf = interfaces->config_read_cb(config_fname);
1586                 if (conf == NULL)
1587                         return NULL;
1588                 if (conf->num_bss > 1) {
1589                         wpa_printf(MSG_ERROR, "Multiple BSSes specified in BSS-config");
1590                         hostapd_config_free(conf);
1591                         return NULL;
1592                 }
1593
1594                 ifname = conf->bss[0]->iface;
1595                 if (ifname[0] != '\0' && ifname_in_use(interfaces, ifname)) {
1596                         wpa_printf(MSG_ERROR,
1597                                    "Interface name %s already in use", ifname);
1598                         hostapd_config_free(conf);
1599                         return NULL;
1600                 }
1601
1602                 tmp_conf = os_realloc_array(
1603                         iface->conf->bss, iface->conf->num_bss + 1,
1604                         sizeof(struct hostapd_bss_config *));
1605                 tmp_bss = os_realloc_array(iface->bss, iface->num_bss + 1,
1606                                            sizeof(struct hostapd_data *));
1607                 if (tmp_bss)
1608                         iface->bss = tmp_bss;
1609                 if (tmp_conf) {
1610                         iface->conf->bss = tmp_conf;
1611                         iface->conf->last_bss = tmp_conf[0];
1612                 }
1613                 if (tmp_bss == NULL || tmp_conf == NULL) {
1614                         hostapd_config_free(conf);
1615                         return NULL;
1616                 }
1617                 bss = iface->conf->bss[iface->conf->num_bss] = conf->bss[0];
1618                 iface->conf->num_bss++;
1619
1620                 hapd = hostapd_alloc_bss_data(iface, iface->conf, bss);
1621                 if (hapd == NULL) {
1622                         iface->conf->num_bss--;
1623                         hostapd_config_free(conf);
1624                         return NULL;
1625                 }
1626                 iface->conf->last_bss = bss;
1627                 iface->bss[iface->num_bss] = hapd;
1628                 hapd->msg_ctx = hapd;
1629
1630                 bss_idx = iface->num_bss++;
1631                 conf->num_bss--;
1632                 conf->bss[0] = NULL;
1633                 hostapd_config_free(conf);
1634         } else {
1635                 /* Add a new iface with the first BSS */
1636                 new_iface = iface = hostapd_init(interfaces, config_fname);
1637                 if (!iface)
1638                         return NULL;
1639                 os_strlcpy(iface->phy, phy, sizeof(iface->phy));
1640                 iface->interfaces = interfaces;
1641                 bss_idx = 0;
1642         }
1643
1644         for (k = 0; k < debug; k++) {
1645                 if (iface->bss[bss_idx]->conf->logger_stdout_level > 0)
1646                         iface->bss[bss_idx]->conf->logger_stdout_level--;
1647         }
1648
1649         if (iface->conf->bss[bss_idx]->iface[0] == '\0' &&
1650             !hostapd_drv_none(iface->bss[bss_idx])) {
1651                 wpa_printf(MSG_ERROR, "Interface name not specified in %s",
1652                            config_fname);
1653                 if (new_iface)
1654                         hostapd_interface_deinit_free(new_iface);
1655                 return NULL;
1656         }
1657
1658         return iface;
1659 }
1660
1661
1662 void hostapd_interface_deinit_free(struct hostapd_iface *iface)
1663 {
1664         const struct wpa_driver_ops *driver;
1665         void *drv_priv;
1666
1667         wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
1668         if (iface == NULL)
1669                 return;
1670         wpa_printf(MSG_DEBUG, "%s: num_bss=%u conf->num_bss=%u",
1671                    __func__, (unsigned int) iface->num_bss,
1672                    (unsigned int) iface->conf->num_bss);
1673         driver = iface->bss[0]->driver;
1674         drv_priv = iface->bss[0]->drv_priv;
1675         hostapd_interface_deinit(iface);
1676         wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit",
1677                    __func__, driver, drv_priv);
1678         if (driver && driver->hapd_deinit && drv_priv) {
1679                 driver->hapd_deinit(drv_priv);
1680                 iface->bss[0]->drv_priv = NULL;
1681         }
1682         hostapd_interface_free(iface);
1683 }
1684
1685
1686 static void hostapd_deinit_driver(const struct wpa_driver_ops *driver,
1687                                   void *drv_priv,
1688                                   struct hostapd_iface *hapd_iface)
1689 {
1690         size_t j;
1691
1692         wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit",
1693                    __func__, driver, drv_priv);
1694         if (driver && driver->hapd_deinit && drv_priv) {
1695                 driver->hapd_deinit(drv_priv);
1696                 for (j = 0; j < hapd_iface->num_bss; j++) {
1697                         wpa_printf(MSG_DEBUG, "%s:bss[%d]->drv_priv=%p",
1698                                    __func__, (int) j,
1699                                    hapd_iface->bss[j]->drv_priv);
1700                         if (hapd_iface->bss[j]->drv_priv == drv_priv)
1701                                 hapd_iface->bss[j]->drv_priv = NULL;
1702                 }
1703         }
1704 }
1705
1706
1707 int hostapd_enable_iface(struct hostapd_iface *hapd_iface)
1708 {
1709         size_t j;
1710
1711         if (hapd_iface->bss[0]->drv_priv != NULL) {
1712                 wpa_printf(MSG_ERROR, "Interface %s already enabled",
1713                            hapd_iface->conf->bss[0]->iface);
1714                 return -1;
1715         }
1716
1717         wpa_printf(MSG_DEBUG, "Enable interface %s",
1718                    hapd_iface->conf->bss[0]->iface);
1719
1720         for (j = 0; j < hapd_iface->num_bss; j++)
1721                 hostapd_set_security_params(hapd_iface->conf->bss[j], 1);
1722         if (hostapd_config_check(hapd_iface->conf, 1) < 0) {
1723                 wpa_printf(MSG_INFO, "Invalid configuration - cannot enable");
1724                 return -1;
1725         }
1726
1727         if (hapd_iface->interfaces == NULL ||
1728             hapd_iface->interfaces->driver_init == NULL ||
1729             hapd_iface->interfaces->driver_init(hapd_iface))
1730                 return -1;
1731
1732         if (hostapd_setup_interface(hapd_iface)) {
1733                 hostapd_deinit_driver(hapd_iface->bss[0]->driver,
1734                                       hapd_iface->bss[0]->drv_priv,
1735                                       hapd_iface);
1736                 return -1;
1737         }
1738
1739         return 0;
1740 }
1741
1742
1743 int hostapd_reload_iface(struct hostapd_iface *hapd_iface)
1744 {
1745         size_t j;
1746
1747         wpa_printf(MSG_DEBUG, "Reload interface %s",
1748                    hapd_iface->conf->bss[0]->iface);
1749         for (j = 0; j < hapd_iface->num_bss; j++)
1750                 hostapd_set_security_params(hapd_iface->conf->bss[j], 1);
1751         if (hostapd_config_check(hapd_iface->conf, 1) < 0) {
1752                 wpa_printf(MSG_ERROR, "Updated configuration is invalid");
1753                 return -1;
1754         }
1755         hostapd_clear_old(hapd_iface);
1756         for (j = 0; j < hapd_iface->num_bss; j++)
1757                 hostapd_reload_bss(hapd_iface->bss[j]);
1758
1759         return 0;
1760 }
1761
1762
1763 int hostapd_disable_iface(struct hostapd_iface *hapd_iface)
1764 {
1765         size_t j;
1766         const struct wpa_driver_ops *driver;
1767         void *drv_priv;
1768
1769         if (hapd_iface == NULL)
1770                 return -1;
1771
1772         if (hapd_iface->bss[0]->drv_priv == NULL) {
1773                 wpa_printf(MSG_INFO, "Interface %s already disabled",
1774                            hapd_iface->conf->bss[0]->iface);
1775                 return -1;
1776         }
1777
1778         wpa_msg(hapd_iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
1779         driver = hapd_iface->bss[0]->driver;
1780         drv_priv = hapd_iface->bss[0]->drv_priv;
1781
1782         hapd_iface->driver_ap_teardown =
1783                 !!(hapd_iface->drv_flags &
1784                    WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
1785
1786         /* same as hostapd_interface_deinit without deinitializing ctrl-iface */
1787         for (j = 0; j < hapd_iface->num_bss; j++) {
1788                 struct hostapd_data *hapd = hapd_iface->bss[j];
1789                 hostapd_bss_deinit_no_free(hapd);
1790                 hostapd_free_hapd_data(hapd);
1791         }
1792
1793         hostapd_deinit_driver(driver, drv_priv, hapd_iface);
1794
1795         /* From hostapd_cleanup_iface: These were initialized in
1796          * hostapd_setup_interface and hostapd_setup_interface_complete
1797          */
1798         hostapd_cleanup_iface_partial(hapd_iface);
1799
1800         wpa_printf(MSG_DEBUG, "Interface %s disabled",
1801                    hapd_iface->bss[0]->conf->iface);
1802         hostapd_set_state(hapd_iface, HAPD_IFACE_DISABLED);
1803         return 0;
1804 }
1805
1806
1807 static struct hostapd_iface *
1808 hostapd_iface_alloc(struct hapd_interfaces *interfaces)
1809 {
1810         struct hostapd_iface **iface, *hapd_iface;
1811
1812         iface = os_realloc_array(interfaces->iface, interfaces->count + 1,
1813                                  sizeof(struct hostapd_iface *));
1814         if (iface == NULL)
1815                 return NULL;
1816         interfaces->iface = iface;
1817         hapd_iface = interfaces->iface[interfaces->count] =
1818                 os_zalloc(sizeof(*hapd_iface));
1819         if (hapd_iface == NULL) {
1820                 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for "
1821                            "the interface", __func__);
1822                 return NULL;
1823         }
1824         interfaces->count++;
1825         hapd_iface->interfaces = interfaces;
1826
1827         return hapd_iface;
1828 }
1829
1830
1831 static struct hostapd_config *
1832 hostapd_config_alloc(struct hapd_interfaces *interfaces, const char *ifname,
1833                      const char *ctrl_iface)
1834 {
1835         struct hostapd_bss_config *bss;
1836         struct hostapd_config *conf;
1837
1838         /* Allocates memory for bss and conf */
1839         conf = hostapd_config_defaults();
1840         if (conf == NULL) {
1841                  wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for "
1842                                 "configuration", __func__);
1843                 return NULL;
1844         }
1845
1846         conf->driver = wpa_drivers[0];
1847         if (conf->driver == NULL) {
1848                 wpa_printf(MSG_ERROR, "No driver wrappers registered!");
1849                 hostapd_config_free(conf);
1850                 return NULL;
1851         }
1852
1853         bss = conf->last_bss = conf->bss[0];
1854
1855         os_strlcpy(bss->iface, ifname, sizeof(bss->iface));
1856         bss->ctrl_interface = os_strdup(ctrl_iface);
1857         if (bss->ctrl_interface == NULL) {
1858                 hostapd_config_free(conf);
1859                 return NULL;
1860         }
1861
1862         /* Reading configuration file skipped, will be done in SET!
1863          * From reading the configuration till the end has to be done in
1864          * SET
1865          */
1866         return conf;
1867 }
1868
1869
1870 static struct hostapd_iface * hostapd_data_alloc(
1871         struct hapd_interfaces *interfaces, struct hostapd_config *conf)
1872 {
1873         size_t i;
1874         struct hostapd_iface *hapd_iface =
1875                 interfaces->iface[interfaces->count - 1];
1876         struct hostapd_data *hapd;
1877
1878         hapd_iface->conf = conf;
1879         hapd_iface->num_bss = conf->num_bss;
1880
1881         hapd_iface->bss = os_zalloc(conf->num_bss *
1882                                     sizeof(struct hostapd_data *));
1883         if (hapd_iface->bss == NULL)
1884                 return NULL;
1885
1886         for (i = 0; i < conf->num_bss; i++) {
1887                 hapd = hapd_iface->bss[i] =
1888                         hostapd_alloc_bss_data(hapd_iface, conf, conf->bss[i]);
1889                 if (hapd == NULL)
1890                         return NULL;
1891                 hapd->msg_ctx = hapd;
1892         }
1893
1894         hapd_iface->interfaces = interfaces;
1895
1896         return hapd_iface;
1897 }
1898
1899
1900 int hostapd_add_iface(struct hapd_interfaces *interfaces, char *buf)
1901 {
1902         struct hostapd_config *conf = NULL;
1903         struct hostapd_iface *hapd_iface = NULL, *new_iface = NULL;
1904         struct hostapd_data *hapd;
1905         char *ptr;
1906         size_t i, j;
1907         const char *conf_file = NULL, *phy_name = NULL;
1908
1909         if (os_strncmp(buf, "bss_config=", 11) == 0) {
1910                 char *pos;
1911                 phy_name = buf + 11;
1912                 pos = os_strchr(phy_name, ':');
1913                 if (!pos)
1914                         return -1;
1915                 *pos++ = '\0';
1916                 conf_file = pos;
1917                 if (!os_strlen(conf_file))
1918                         return -1;
1919
1920                 hapd_iface = hostapd_interface_init_bss(interfaces, phy_name,
1921                                                         conf_file, 0);
1922                 if (!hapd_iface)
1923                         return -1;
1924                 for (j = 0; j < interfaces->count; j++) {
1925                         if (interfaces->iface[j] == hapd_iface)
1926                                 break;
1927                 }
1928                 if (j == interfaces->count) {
1929                         struct hostapd_iface **tmp;
1930                         tmp = os_realloc_array(interfaces->iface,
1931                                                interfaces->count + 1,
1932                                                sizeof(struct hostapd_iface *));
1933                         if (!tmp) {
1934                                 hostapd_interface_deinit_free(hapd_iface);
1935                                 return -1;
1936                         }
1937                         interfaces->iface = tmp;
1938                         interfaces->iface[interfaces->count++] = hapd_iface;
1939                         new_iface = hapd_iface;
1940                 }
1941
1942                 if (new_iface) {
1943                         if (interfaces->driver_init(hapd_iface) ||
1944                             hostapd_setup_interface(hapd_iface)) {
1945                                 interfaces->count--;
1946                                 goto fail;
1947                         }
1948                 } else {
1949                         /* Assign new BSS with bss[0]'s driver info */
1950                         hapd = hapd_iface->bss[hapd_iface->num_bss - 1];
1951                         hapd->driver = hapd_iface->bss[0]->driver;
1952                         hapd->drv_priv = hapd_iface->bss[0]->drv_priv;
1953                         os_memcpy(hapd->own_addr, hapd_iface->bss[0]->own_addr,
1954                                   ETH_ALEN);
1955
1956                         if (start_ctrl_iface_bss(hapd) < 0 ||
1957                             (hapd_iface->state == HAPD_IFACE_ENABLED &&
1958                              hostapd_setup_bss(hapd, -1))) {
1959                                 hostapd_cleanup(hapd);
1960                                 hapd_iface->bss[hapd_iface->num_bss - 1] = NULL;
1961                                 hapd_iface->conf->num_bss--;
1962                                 hapd_iface->num_bss--;
1963                                 wpa_printf(MSG_DEBUG, "%s: free hapd %p %s",
1964                                            __func__, hapd, hapd->conf->iface);
1965                                 os_free(hapd);
1966                                 return -1;
1967                         }
1968                 }
1969                 return 0;
1970         }
1971
1972         ptr = os_strchr(buf, ' ');
1973         if (ptr == NULL)
1974                 return -1;
1975         *ptr++ = '\0';
1976
1977         if (os_strncmp(ptr, "config=", 7) == 0)
1978                 conf_file = ptr + 7;
1979
1980         for (i = 0; i < interfaces->count; i++) {
1981                 if (!os_strcmp(interfaces->iface[i]->conf->bss[0]->iface,
1982                                buf)) {
1983                         wpa_printf(MSG_INFO, "Cannot add interface - it "
1984                                    "already exists");
1985                         return -1;
1986                 }
1987         }
1988
1989         hapd_iface = hostapd_iface_alloc(interfaces);
1990         if (hapd_iface == NULL) {
1991                 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
1992                            "for interface", __func__);
1993                 goto fail;
1994         }
1995
1996         if (conf_file && interfaces->config_read_cb) {
1997                 conf = interfaces->config_read_cb(conf_file);
1998                 if (conf && conf->bss)
1999                         os_strlcpy(conf->bss[0]->iface, buf,
2000                                    sizeof(conf->bss[0]->iface));
2001         } else
2002                 conf = hostapd_config_alloc(interfaces, buf, ptr);
2003         if (conf == NULL || conf->bss == NULL) {
2004                 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
2005                            "for configuration", __func__);
2006                 goto fail;
2007         }
2008
2009         hapd_iface = hostapd_data_alloc(interfaces, conf);
2010         if (hapd_iface == NULL) {
2011                 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
2012                            "for hostapd", __func__);
2013                 goto fail;
2014         }
2015
2016         if (start_ctrl_iface(hapd_iface) < 0)
2017                 goto fail;
2018
2019         wpa_printf(MSG_INFO, "Add interface '%s'", conf->bss[0]->iface);
2020
2021         return 0;
2022
2023 fail:
2024         if (conf)
2025                 hostapd_config_free(conf);
2026         if (hapd_iface) {
2027                 if (hapd_iface->bss) {
2028                         for (i = 0; i < hapd_iface->num_bss; i++) {
2029                                 hapd = hapd_iface->bss[i];
2030                                 if (!hapd)
2031                                         continue;
2032                                 if (hapd_iface->interfaces &&
2033                                     hapd_iface->interfaces->ctrl_iface_deinit)
2034                                         hapd_iface->interfaces->
2035                                                 ctrl_iface_deinit(hapd);
2036                                 wpa_printf(MSG_DEBUG, "%s: free hapd %p (%s)",
2037                                            __func__, hapd_iface->bss[i],
2038                                            hapd->conf->iface);
2039                                 os_free(hapd);
2040                                 hapd_iface->bss[i] = NULL;
2041                         }
2042                         os_free(hapd_iface->bss);
2043                 }
2044                 wpa_printf(MSG_DEBUG, "%s: free iface %p",
2045                            __func__, hapd_iface);
2046                 os_free(hapd_iface);
2047         }
2048         return -1;
2049 }
2050
2051
2052 static int hostapd_remove_bss(struct hostapd_iface *iface, unsigned int idx)
2053 {
2054         size_t i;
2055
2056         wpa_printf(MSG_INFO, "Remove BSS '%s'", iface->conf->bss[idx]->iface);
2057
2058         /* Remove hostapd_data only if it has already been initialized */
2059         if (idx < iface->num_bss) {
2060                 struct hostapd_data *hapd = iface->bss[idx];
2061
2062                 hostapd_bss_deinit(hapd);
2063                 wpa_printf(MSG_DEBUG, "%s: free hapd %p (%s)",
2064                            __func__, hapd, hapd->conf->iface);
2065                 hostapd_config_free_bss(hapd->conf);
2066                 os_free(hapd);
2067
2068                 iface->num_bss--;
2069
2070                 for (i = idx; i < iface->num_bss; i++)
2071                         iface->bss[i] = iface->bss[i + 1];
2072         } else {
2073                 hostapd_config_free_bss(iface->conf->bss[idx]);
2074                 iface->conf->bss[idx] = NULL;
2075         }
2076
2077         iface->conf->num_bss--;
2078         for (i = idx; i < iface->conf->num_bss; i++)
2079                 iface->conf->bss[i] = iface->conf->bss[i + 1];
2080
2081         return 0;
2082 }
2083
2084
2085 int hostapd_remove_iface(struct hapd_interfaces *interfaces, char *buf)
2086 {
2087         struct hostapd_iface *hapd_iface;
2088         size_t i, j, k = 0;
2089
2090         for (i = 0; i < interfaces->count; i++) {
2091                 hapd_iface = interfaces->iface[i];
2092                 if (hapd_iface == NULL)
2093                         return -1;
2094                 if (!os_strcmp(hapd_iface->conf->bss[0]->iface, buf)) {
2095                         wpa_printf(MSG_INFO, "Remove interface '%s'", buf);
2096                         hapd_iface->driver_ap_teardown =
2097                                 !!(hapd_iface->drv_flags &
2098                                    WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
2099
2100                         hostapd_interface_deinit_free(hapd_iface);
2101                         k = i;
2102                         while (k < (interfaces->count - 1)) {
2103                                 interfaces->iface[k] =
2104                                         interfaces->iface[k + 1];
2105                                 k++;
2106                         }
2107                         interfaces->count--;
2108                         return 0;
2109                 }
2110
2111                 for (j = 0; j < hapd_iface->conf->num_bss; j++) {
2112                         if (!os_strcmp(hapd_iface->conf->bss[j]->iface, buf)) {
2113                                 hapd_iface->driver_ap_teardown =
2114                                         !(hapd_iface->drv_flags &
2115                                           WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
2116                                 return hostapd_remove_bss(hapd_iface, j);
2117                         }
2118                 }
2119         }
2120         return -1;
2121 }
2122
2123
2124 /**
2125  * hostapd_new_assoc_sta - Notify that a new station associated with the AP
2126  * @hapd: Pointer to BSS data
2127  * @sta: Pointer to the associated STA data
2128  * @reassoc: 1 to indicate this was a re-association; 0 = first association
2129  *
2130  * This function will be called whenever a station associates with the AP. It
2131  * can be called from ieee802_11.c for drivers that export MLME to hostapd and
2132  * from drv_callbacks.c based on driver events for drivers that take care of
2133  * management frames (IEEE 802.11 authentication and association) internally.
2134  */
2135 void hostapd_new_assoc_sta(struct hostapd_data *hapd, struct sta_info *sta,
2136                            int reassoc)
2137 {
2138         if (hapd->tkip_countermeasures) {
2139                 hostapd_drv_sta_deauth(hapd, sta->addr,
2140                                        WLAN_REASON_MICHAEL_MIC_FAILURE);
2141                 return;
2142         }
2143
2144         hostapd_prune_associations(hapd, sta->addr);
2145
2146         /* IEEE 802.11F (IAPP) */
2147         if (hapd->conf->ieee802_11f)
2148                 iapp_new_station(hapd->iapp, sta);
2149
2150 #ifdef CONFIG_P2P
2151         if (sta->p2p_ie == NULL && !sta->no_p2p_set) {
2152                 sta->no_p2p_set = 1;
2153                 hapd->num_sta_no_p2p++;
2154                 if (hapd->num_sta_no_p2p == 1)
2155                         hostapd_p2p_non_p2p_sta_connected(hapd);
2156         }
2157 #endif /* CONFIG_P2P */
2158
2159         /* Start accounting here, if IEEE 802.1X and WPA are not used.
2160          * IEEE 802.1X/WPA code will start accounting after the station has
2161          * been authorized. */
2162         if (!hapd->conf->ieee802_1x && !hapd->conf->wpa && !hapd->conf->osen) {
2163                 ap_sta_set_authorized(hapd, sta, 1);
2164                 os_get_reltime(&sta->connected_time);
2165                 accounting_sta_start(hapd, sta);
2166         }
2167
2168         /* Start IEEE 802.1X authentication process for new stations */
2169         ieee802_1x_new_station(hapd, sta);
2170         if (reassoc) {
2171                 if (sta->auth_alg != WLAN_AUTH_FT &&
2172                     !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)))
2173                         wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH);
2174         } else
2175                 wpa_auth_sta_associated(hapd->wpa_auth, sta->wpa_sm);
2176
2177         if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)) {
2178                 wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout "
2179                            "for " MACSTR " (%d seconds - ap_max_inactivity)",
2180                            __func__, MAC2STR(sta->addr),
2181                            hapd->conf->ap_max_inactivity);
2182                 eloop_cancel_timeout(ap_handle_timer, hapd, sta);
2183                 eloop_register_timeout(hapd->conf->ap_max_inactivity, 0,
2184                                        ap_handle_timer, hapd, sta);
2185         }
2186 }
2187
2188
2189 const char * hostapd_state_text(enum hostapd_iface_state s)
2190 {
2191         switch (s) {
2192         case HAPD_IFACE_UNINITIALIZED:
2193                 return "UNINITIALIZED";
2194         case HAPD_IFACE_DISABLED:
2195                 return "DISABLED";
2196         case HAPD_IFACE_COUNTRY_UPDATE:
2197                 return "COUNTRY_UPDATE";
2198         case HAPD_IFACE_ACS:
2199                 return "ACS";
2200         case HAPD_IFACE_HT_SCAN:
2201                 return "HT_SCAN";
2202         case HAPD_IFACE_DFS:
2203                 return "DFS";
2204         case HAPD_IFACE_ENABLED:
2205                 return "ENABLED";
2206         }
2207
2208         return "UNKNOWN";
2209 }
2210
2211
2212 void hostapd_set_state(struct hostapd_iface *iface, enum hostapd_iface_state s)
2213 {
2214         wpa_printf(MSG_INFO, "%s: interface state %s->%s",
2215                    iface->conf->bss[0]->iface, hostapd_state_text(iface->state),
2216                    hostapd_state_text(s));
2217         iface->state = s;
2218 }
2219
2220
2221 #ifdef NEED_AP_MLME
2222
2223 static void free_beacon_data(struct beacon_data *beacon)
2224 {
2225         os_free(beacon->head);
2226         beacon->head = NULL;
2227         os_free(beacon->tail);
2228         beacon->tail = NULL;
2229         os_free(beacon->probe_resp);
2230         beacon->probe_resp = NULL;
2231         os_free(beacon->beacon_ies);
2232         beacon->beacon_ies = NULL;
2233         os_free(beacon->proberesp_ies);
2234         beacon->proberesp_ies = NULL;
2235         os_free(beacon->assocresp_ies);
2236         beacon->assocresp_ies = NULL;
2237 }
2238
2239
2240 static int hostapd_build_beacon_data(struct hostapd_data *hapd,
2241                                      struct beacon_data *beacon)
2242 {
2243         struct wpabuf *beacon_extra, *proberesp_extra, *assocresp_extra;
2244         struct wpa_driver_ap_params params;
2245         int ret;
2246
2247         os_memset(beacon, 0, sizeof(*beacon));
2248         ret = ieee802_11_build_ap_params(hapd, &params);
2249         if (ret < 0)
2250                 return ret;
2251
2252         ret = hostapd_build_ap_extra_ies(hapd, &beacon_extra,
2253                                          &proberesp_extra,
2254                                          &assocresp_extra);
2255         if (ret)
2256                 goto free_ap_params;
2257
2258         ret = -1;
2259         beacon->head = os_malloc(params.head_len);
2260         if (!beacon->head)
2261                 goto free_ap_extra_ies;
2262
2263         os_memcpy(beacon->head, params.head, params.head_len);
2264         beacon->head_len = params.head_len;
2265
2266         beacon->tail = os_malloc(params.tail_len);
2267         if (!beacon->tail)
2268                 goto free_beacon;
2269
2270         os_memcpy(beacon->tail, params.tail, params.tail_len);
2271         beacon->tail_len = params.tail_len;
2272
2273         if (params.proberesp != NULL) {
2274                 beacon->probe_resp = os_malloc(params.proberesp_len);
2275                 if (!beacon->probe_resp)
2276                         goto free_beacon;
2277
2278                 os_memcpy(beacon->probe_resp, params.proberesp,
2279                           params.proberesp_len);
2280                 beacon->probe_resp_len = params.proberesp_len;
2281         }
2282
2283         /* copy the extra ies */
2284         if (beacon_extra) {
2285                 beacon->beacon_ies = os_malloc(wpabuf_len(beacon_extra));
2286                 if (!beacon->beacon_ies)
2287                         goto free_beacon;
2288
2289                 os_memcpy(beacon->beacon_ies,
2290                           beacon_extra->buf, wpabuf_len(beacon_extra));
2291                 beacon->beacon_ies_len = wpabuf_len(beacon_extra);
2292         }
2293
2294         if (proberesp_extra) {
2295                 beacon->proberesp_ies =
2296                         os_malloc(wpabuf_len(proberesp_extra));
2297                 if (!beacon->proberesp_ies)
2298                         goto free_beacon;
2299
2300                 os_memcpy(beacon->proberesp_ies, proberesp_extra->buf,
2301                           wpabuf_len(proberesp_extra));
2302                 beacon->proberesp_ies_len = wpabuf_len(proberesp_extra);
2303         }
2304
2305         if (assocresp_extra) {
2306                 beacon->assocresp_ies =
2307                         os_malloc(wpabuf_len(assocresp_extra));
2308                 if (!beacon->assocresp_ies)
2309                         goto free_beacon;
2310
2311                 os_memcpy(beacon->assocresp_ies, assocresp_extra->buf,
2312                           wpabuf_len(assocresp_extra));
2313                 beacon->assocresp_ies_len = wpabuf_len(assocresp_extra);
2314         }
2315
2316         ret = 0;
2317 free_beacon:
2318         /* if the function fails, the caller should not free beacon data */
2319         if (ret)
2320                 free_beacon_data(beacon);
2321
2322 free_ap_extra_ies:
2323         hostapd_free_ap_extra_ies(hapd, beacon_extra, proberesp_extra,
2324                                   assocresp_extra);
2325 free_ap_params:
2326         ieee802_11_free_ap_params(&params);
2327         return ret;
2328 }
2329
2330
2331 /*
2332  * TODO: This flow currently supports only changing frequency within the
2333  * same hw_mode. Any other changes to MAC parameters or provided settings (even
2334  * width) are not supported.
2335  */
2336 static int hostapd_change_config_freq(struct hostapd_data *hapd,
2337                                       struct hostapd_config *conf,
2338                                       struct hostapd_freq_params *params,
2339                                       struct hostapd_freq_params *old_params)
2340 {
2341         int channel;
2342
2343         if (!params->channel) {
2344                 /* check if the new channel is supported by hw */
2345                 params->channel = hostapd_hw_get_channel(hapd, params->freq);
2346         }
2347
2348         channel = params->channel;
2349         if (!channel)
2350                 return -1;
2351
2352         /* if a pointer to old_params is provided we save previous state */
2353         if (old_params) {
2354                 old_params->channel = conf->channel;
2355                 old_params->ht_enabled = conf->ieee80211n;
2356                 old_params->sec_channel_offset = conf->secondary_channel;
2357         }
2358
2359         conf->channel = channel;
2360         conf->ieee80211n = params->ht_enabled;
2361         conf->secondary_channel = params->sec_channel_offset;
2362
2363         /* TODO: maybe call here hostapd_config_check here? */
2364
2365         return 0;
2366 }
2367
2368
2369 static int hostapd_fill_csa_settings(struct hostapd_data *hapd,
2370                                      struct csa_settings *settings)
2371 {
2372         struct hostapd_iface *iface = hapd->iface;
2373         struct hostapd_freq_params old_freq;
2374         int ret;
2375
2376         os_memset(&old_freq, 0, sizeof(old_freq));
2377         if (!iface || !iface->freq || hapd->csa_in_progress)
2378                 return -1;
2379
2380         ret = hostapd_change_config_freq(iface->bss[0], iface->conf,
2381                                          &settings->freq_params,
2382                                          &old_freq);
2383         if (ret)
2384                 return ret;
2385
2386         ret = hostapd_build_beacon_data(hapd, &settings->beacon_after);
2387
2388         /* change back the configuration */
2389         hostapd_change_config_freq(iface->bss[0], iface->conf,
2390                                    &old_freq, NULL);
2391
2392         if (ret)
2393                 return ret;
2394
2395         /* set channel switch parameters for csa ie */
2396         hapd->cs_freq_params = settings->freq_params;
2397         hapd->cs_count = settings->cs_count;
2398         hapd->cs_block_tx = settings->block_tx;
2399
2400         ret = hostapd_build_beacon_data(hapd, &settings->beacon_csa);
2401         if (ret) {
2402                 free_beacon_data(&settings->beacon_after);
2403                 return ret;
2404         }
2405
2406         settings->counter_offset_beacon = hapd->cs_c_off_beacon;
2407         settings->counter_offset_presp = hapd->cs_c_off_proberesp;
2408
2409         return 0;
2410 }
2411
2412
2413 void hostapd_cleanup_cs_params(struct hostapd_data *hapd)
2414 {
2415         os_memset(&hapd->cs_freq_params, 0, sizeof(hapd->cs_freq_params));
2416         hapd->cs_count = 0;
2417         hapd->cs_block_tx = 0;
2418         hapd->cs_c_off_beacon = 0;
2419         hapd->cs_c_off_proberesp = 0;
2420         hapd->csa_in_progress = 0;
2421 }
2422
2423
2424 int hostapd_switch_channel(struct hostapd_data *hapd,
2425                            struct csa_settings *settings)
2426 {
2427         int ret;
2428
2429         if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
2430                 wpa_printf(MSG_INFO, "CSA is not supported");
2431                 return -1;
2432         }
2433
2434         ret = hostapd_fill_csa_settings(hapd, settings);
2435         if (ret)
2436                 return ret;
2437
2438         ret = hostapd_drv_switch_channel(hapd, settings);
2439         free_beacon_data(&settings->beacon_csa);
2440         free_beacon_data(&settings->beacon_after);
2441
2442         if (ret) {
2443                 /* if we failed, clean cs parameters */
2444                 hostapd_cleanup_cs_params(hapd);
2445                 return ret;
2446         }
2447
2448         hapd->csa_in_progress = 1;
2449         return 0;
2450 }
2451
2452
2453 void
2454 hostapd_switch_channel_fallback(struct hostapd_iface *iface,
2455                                 const struct hostapd_freq_params *freq_params)
2456 {
2457         int vht_seg0_idx = 0, vht_seg1_idx = 0, vht_bw = VHT_CHANWIDTH_USE_HT;
2458         unsigned int i;
2459
2460         wpa_printf(MSG_DEBUG, "Restarting all CSA-related BSSes");
2461
2462         if (freq_params->center_freq1)
2463                 vht_seg0_idx = 36 + (freq_params->center_freq1 - 5180) / 5;
2464         if (freq_params->center_freq2)
2465                 vht_seg1_idx = 36 + (freq_params->center_freq2 - 5180) / 5;
2466
2467         switch (freq_params->bandwidth) {
2468         case 0:
2469         case 20:
2470         case 40:
2471                 vht_bw = VHT_CHANWIDTH_USE_HT;
2472                 break;
2473         case 80:
2474                 if (freq_params->center_freq2)
2475                         vht_bw = VHT_CHANWIDTH_80P80MHZ;
2476                 else
2477                         vht_bw = VHT_CHANWIDTH_80MHZ;
2478                 break;
2479         case 160:
2480                 vht_bw = VHT_CHANWIDTH_160MHZ;
2481                 break;
2482         default:
2483                 wpa_printf(MSG_WARNING, "Unknown CSA bandwidth: %d",
2484                            freq_params->bandwidth);
2485                 break;
2486         }
2487
2488         iface->freq = freq_params->freq;
2489         iface->conf->channel = freq_params->channel;
2490         iface->conf->secondary_channel = freq_params->sec_channel_offset;
2491         iface->conf->vht_oper_centr_freq_seg0_idx = vht_seg0_idx;
2492         iface->conf->vht_oper_centr_freq_seg1_idx = vht_seg1_idx;
2493         iface->conf->vht_oper_chwidth = vht_bw;
2494         iface->conf->ieee80211n = freq_params->ht_enabled;
2495         iface->conf->ieee80211ac = freq_params->vht_enabled;
2496
2497         /*
2498          * cs_params must not be cleared earlier because the freq_params
2499          * argument may actually point to one of these.
2500          */
2501         for (i = 0; i < iface->num_bss; i++)
2502                 hostapd_cleanup_cs_params(iface->bss[i]);
2503
2504         hostapd_disable_iface(iface);
2505         hostapd_enable_iface(iface);
2506 }
2507
2508 #endif /* NEED_AP_MLME */