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         os_free(hapd->probereq_cb);
 260         hapd->probereq_cb = NULL;
 261
 262 #ifdef CONFIG_P2P
 263         wpabuf_free(hapd->p2p_beacon_ie);
 264         hapd->p2p_beacon_ie = NULL;
 265         wpabuf_free(hapd->p2p_probe_resp_ie);
 266         hapd->p2p_probe_resp_ie = NULL;
 267 #endif /* CONFIG_P2P */
 268
 269         if (!hapd->started) {
 270                 wpa_printf(MSG_ERROR, "%s: Interface %s wasn't started",
 271                            __func__, hapd->conf->iface);
 272                 return;
 273         }
 274         hapd->started = 0;
 275
 276         wpa_printf(MSG_DEBUG, "%s(%s)", __func__, hapd->conf->iface);
 277         iapp_deinit(hapd->iapp);
 278         hapd->iapp = NULL;
 279         accounting_deinit(hapd);
 280         hostapd_deinit_wpa(hapd);
 281         vlan_deinit(hapd);
 282         hostapd_acl_deinit(hapd);
 283 #ifndef CONFIG_NO_RADIUS
 284         radius_client_deinit(hapd->radius);
 285         hapd->radius = NULL;
 286         radius_das_deinit(hapd->radius_das);
 287         hapd->radius_das = NULL;
 288 #endif /* CONFIG_NO_RADIUS */
 289
 290         hostapd_deinit_wps(hapd);
 291
 292         authsrv_deinit(hapd);
 293
 294         if (hapd->interface_added) {
 295                 hapd->interface_added = 0;
 296                 if (hostapd_if_remove(hapd, WPA_IF_AP_BSS, hapd->conf->iface)) {
 297                         wpa_printf(MSG_WARNING,
 298                                    "Failed to remove BSS interface %s",
 299                                    hapd->conf->iface);
 300                         hapd->interface_added = 1;
 301                 } else {
 302                         /*
 303                          * Since this was a dynamically added interface, the
 304                          * driver wrapper may have removed its internal instance
 305                          * and hapd->drv_priv is not valid anymore.
 306                          */
 307                         hapd->drv_priv = NULL;
 308                 }
 309         }
 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 #ifdef CONFIG_MESH
 330         wpabuf_free(hapd->mesh_pending_auth);
 331         hapd->mesh_pending_auth = NULL;
 332 #endif /* CONFIG_MESH */
 333 }
 334
 335
 336 /**
 337  * hostapd_cleanup - Per-BSS cleanup (deinitialization)
 338  * @hapd: Pointer to BSS data
 339  *
 340  * This function is used to free all per-BSS data structures and resources.
 341  * Most of the modules that are initialized in hostapd_setup_bss() are
 342  * deinitialized here.
 343  */
 344 static void hostapd_cleanup(struct hostapd_data *hapd)
 345 {
 346         wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s))", __func__, hapd,
 347                    hapd->conf->iface);
 348         if (hapd->iface->interfaces &&
 349             hapd->iface->interfaces->ctrl_iface_deinit)
 350                 hapd->iface->interfaces->ctrl_iface_deinit(hapd);
 351         hostapd_free_hapd_data(hapd);
 352 }
 353
 354
 355 static void hostapd_cleanup_iface_partial(struct hostapd_iface *iface)
 356 {
 357         wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
 358         hostapd_free_hw_features(iface->hw_features, iface->num_hw_features);
 359         iface->hw_features = NULL;
 360         os_free(iface->current_rates);
 361         iface->current_rates = NULL;
 362         os_free(iface->basic_rates);
 363         iface->basic_rates = NULL;
 364         ap_list_deinit(iface);
 365 }
 366
 367
 368 /**
 369  * hostapd_cleanup_iface - Complete per-interface cleanup
 370  * @iface: Pointer to interface data
 371  *
 372  * This function is called after per-BSS data structures are deinitialized
 373  * with hostapd_cleanup().
 374  */
 375 static void hostapd_cleanup_iface(struct hostapd_iface *iface)
 376 {
 377         wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
 378         eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
 379
 380         hostapd_cleanup_iface_partial(iface);
 381         hostapd_config_free(iface->conf);
 382         iface->conf = NULL;
 383
 384         os_free(iface->config_fname);
 385         os_free(iface->bss);
 386         wpa_printf(MSG_DEBUG, "%s: free iface=%p", __func__, iface);
 387         os_free(iface);
 388 }
 389
 390
 391 static void hostapd_clear_wep(struct hostapd_data *hapd)
 392 {
 393         if (hapd->drv_priv && !hapd->iface->driver_ap_teardown) {
 394                 hostapd_set_privacy(hapd, 0);
 395                 hostapd_broadcast_wep_clear(hapd);
 396         }
 397 }
 398
 399
 400 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd)
 401 {
 402         int i;
 403
 404         hostapd_broadcast_wep_set(hapd);
 405
 406         if (hapd->conf->ssid.wep.default_len) {
 407                 hostapd_set_privacy(hapd, 1);
 408                 return 0;
 409         }
 410
 411         /*
 412          * When IEEE 802.1X is not enabled, the driver may need to know how to
 413          * set authentication algorithms for static WEP.
 414          */
 415         hostapd_drv_set_authmode(hapd, hapd->conf->auth_algs);
 416
 417         for (i = 0; i < 4; i++) {
 418                 if (hapd->conf->ssid.wep.key[i] &&
 419                     hostapd_drv_set_key(iface, hapd, WPA_ALG_WEP, NULL, i,
 420                                         i == hapd->conf->ssid.wep.idx, NULL, 0,
 421                                         hapd->conf->ssid.wep.key[i],
 422                                         hapd->conf->ssid.wep.len[i])) {
 423                         wpa_printf(MSG_WARNING, "Could not set WEP "
 424                                    "encryption.");
 425                         return -1;
 426                 }
 427                 if (hapd->conf->ssid.wep.key[i] &&
 428                     i == hapd->conf->ssid.wep.idx)
 429                         hostapd_set_privacy(hapd, 1);
 430         }
 431
 432         return 0;
 433 }
 434
 435
 436 static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason)
 437 {
 438         int ret = 0;
 439         u8 addr[ETH_ALEN];
 440
 441         if (hostapd_drv_none(hapd) || hapd->drv_priv == NULL)
 442                 return 0;
 443
 444         if (!hapd->iface->driver_ap_teardown) {
 445                 wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
 446                         "Flushing old station entries");
 447
 448                 if (hostapd_flush(hapd)) {
 449                         wpa_msg(hapd->msg_ctx, MSG_WARNING,
 450                                 "Could not connect to kernel driver");
 451                         ret = -1;
 452                 }
 453         }
 454         wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "Deauthenticate all stations");
 455         os_memset(addr, 0xff, ETH_ALEN);
 456         hostapd_drv_sta_deauth(hapd, addr, reason);
 457         hostapd_free_stas(hapd);
 458
 459         return ret;
 460 }
 461
 462
 463 static void hostapd_bss_deinit_no_free(struct hostapd_data *hapd)
 464 {
 465         hostapd_free_stas(hapd);
 466         hostapd_flush_old_stations(hapd, WLAN_REASON_DEAUTH_LEAVING);
 467         hostapd_clear_wep(hapd);
 468 }
 469
 470
 471 /**
 472  * hostapd_validate_bssid_configuration - Validate BSSID configuration
 473  * @iface: Pointer to interface data
 474  * Returns: 0 on success, -1 on failure
 475  *
 476  * This function is used to validate that the configured BSSIDs are valid.
 477  */
 478 static int hostapd_validate_bssid_configuration(struct hostapd_iface *iface)
 479 {
 480         u8 mask[ETH_ALEN] = { 0 };
 481         struct hostapd_data *hapd = iface->bss[0];
 482         unsigned int i = iface->conf->num_bss, bits = 0, j;
 483         int auto_addr = 0;
 484
 485         if (hostapd_drv_none(hapd))
 486                 return 0;
 487
 488         /* Generate BSSID mask that is large enough to cover the BSSIDs. */
 489
 490         /* Determine the bits necessary to cover the number of BSSIDs. */
 491         for (i--; i; i >>= 1)
 492                 bits++;
 493
 494         /* Determine the bits necessary to any configured BSSIDs,
 495            if they are higher than the number of BSSIDs. */
 496         for (j = 0; j < iface->conf->num_bss; j++) {
 497                 if (hostapd_mac_comp_empty(iface->conf->bss[j]->bssid) == 0) {
 498                         if (j)
 499                                 auto_addr++;
 500                         continue;
 501                 }
 502
 503                 for (i = 0; i < ETH_ALEN; i++) {
 504                         mask[i] |=
 505                                 iface->conf->bss[j]->bssid[i] ^
 506                                 hapd->own_addr[i];
 507                 }
 508         }
 509
 510         if (!auto_addr)
 511                 goto skip_mask_ext;
 512
 513         for (i = 0; i < ETH_ALEN && mask[i] == 0; i++)
 514                 ;
 515         j = 0;
 516         if (i < ETH_ALEN) {
 517                 j = (5 - i) * 8;
 518
 519                 while (mask[i] != 0) {
 520                         mask[i] >>= 1;
 521                         j++;
 522                 }
 523         }
 524
 525         if (bits < j)
 526                 bits = j;
 527
 528         if (bits > 40) {
 529                 wpa_printf(MSG_ERROR, "Too many bits in the BSSID mask (%u)",
 530                            bits);
 531                 return -1;
 532         }
 533
 534         os_memset(mask, 0xff, ETH_ALEN);
 535         j = bits / 8;
 536         for (i = 5; i > 5 - j; i--)
 537                 mask[i] = 0;
 538         j = bits % 8;
 539         while (j--)
 540                 mask[i] <<= 1;
 541
 542 skip_mask_ext:
 543         wpa_printf(MSG_DEBUG, "BSS count %lu, BSSID mask " MACSTR " (%d bits)",
 544                    (unsigned long) iface->conf->num_bss, MAC2STR(mask), bits);
 545
 546         if (!auto_addr)
 547                 return 0;
 548
 549         for (i = 0; i < ETH_ALEN; i++) {
 550                 if ((hapd->own_addr[i] & mask[i]) != hapd->own_addr[i]) {
 551                         wpa_printf(MSG_ERROR, "Invalid BSSID mask " MACSTR
 552                                    " for start address " MACSTR ".",
 553                                    MAC2STR(mask), MAC2STR(hapd->own_addr));
 554                         wpa_printf(MSG_ERROR, "Start address must be the "
 555                                    "first address in the block (i.e., addr "
 556                                    "AND mask == addr).");
 557                         return -1;
 558                 }
 559         }
 560
 561         return 0;
 562 }
 563
 564
 565 static int mac_in_conf(struct hostapd_config *conf, const void *a)
 566 {
 567         size_t i;
 568
 569         for (i = 0; i < conf->num_bss; i++) {
 570                 if (hostapd_mac_comp(conf->bss[i]->bssid, a) == 0) {
 571                         return 1;
 572                 }
 573         }
 574
 575         return 0;
 576 }
 577
 578
 579 #ifndef CONFIG_NO_RADIUS
 580
 581 static int hostapd_das_nas_mismatch(struct hostapd_data *hapd,
 582                                     struct radius_das_attrs *attr)
 583 {
 584         if (attr->nas_identifier &&
 585             (!hapd->conf->nas_identifier ||
 586              os_strlen(hapd->conf->nas_identifier) !=
 587              attr->nas_identifier_len ||
 588              os_memcmp(hapd->conf->nas_identifier, attr->nas_identifier,
 589                        attr->nas_identifier_len) != 0)) {
 590                 wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-Identifier mismatch");
 591                 return 1;
 592         }
 593
 594         if (attr->nas_ip_addr &&
 595             (hapd->conf->own_ip_addr.af != AF_INET ||
 596              os_memcmp(&hapd->conf->own_ip_addr.u.v4, attr->nas_ip_addr, 4) !=
 597              0)) {
 598                 wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-IP-Address mismatch");
 599                 return 1;
 600         }
 601
 602 #ifdef CONFIG_IPV6
 603         if (attr->nas_ipv6_addr &&
 604             (hapd->conf->own_ip_addr.af != AF_INET6 ||
 605              os_memcmp(&hapd->conf->own_ip_addr.u.v6, attr->nas_ipv6_addr, 16)
 606              != 0)) {
 607                 wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-IPv6-Address mismatch");
 608                 return 1;
 609         }
 610 #endif /* CONFIG_IPV6 */
 611
 612         return 0;
 613 }
 614
 615
 616 static struct sta_info * hostapd_das_find_sta(struct hostapd_data *hapd,
 617                                               struct radius_das_attrs *attr)
 618 {
 619         struct sta_info *sta = NULL;
 620         char buf[128];
 621
 622         if (attr->sta_addr)
 623                 sta = ap_get_sta(hapd, attr->sta_addr);
 624
 625         if (sta == NULL && attr->acct_session_id &&
 626             attr->acct_session_id_len == 17) {
 627                 for (sta = hapd->sta_list; sta; sta = sta->next) {
 628                         os_snprintf(buf, sizeof(buf), "%08X-%08X",
 629                                     sta->acct_session_id_hi,
 630                                     sta->acct_session_id_lo);
 631                         if (os_memcmp(attr->acct_session_id, buf, 17) == 0)
 632                                 break;
 633                 }
 634         }
 635
 636         if (sta == NULL && attr->cui) {
 637                 for (sta = hapd->sta_list; sta; sta = sta->next) {
 638                         struct wpabuf *cui;
 639                         cui = ieee802_1x_get_radius_cui(sta->eapol_sm);
 640                         if (cui && wpabuf_len(cui) == attr->cui_len &&
 641                             os_memcmp(wpabuf_head(cui), attr->cui,
 642                                       attr->cui_len) == 0)
 643                                 break;
 644                 }
 645         }
 646
 647         if (sta == NULL && attr->user_name) {
 648                 for (sta = hapd->sta_list; sta; sta = sta->next) {
 649                         u8 *identity;
 650                         size_t identity_len;
 651                         identity = ieee802_1x_get_identity(sta->eapol_sm,
 652                                                            &identity_len);
 653                         if (identity &&
 654                             identity_len == attr->user_name_len &&
 655                             os_memcmp(identity, attr->user_name, identity_len)
 656                             == 0)
 657                                 break;
 658                 }
 659         }
 660
 661         return sta;
 662 }
 663
 664
 665 static enum radius_das_res
 666 hostapd_das_disconnect(void *ctx, struct radius_das_attrs *attr)
 667 {
 668         struct hostapd_data *hapd = ctx;
 669         struct sta_info *sta;
 670
 671         if (hostapd_das_nas_mismatch(hapd, attr))
 672                 return RADIUS_DAS_NAS_MISMATCH;
 673
 674         sta = hostapd_das_find_sta(hapd, attr);
 675         if (sta == NULL)
 676                 return RADIUS_DAS_SESSION_NOT_FOUND;
 677
 678         wpa_auth_pmksa_remove(hapd->wpa_auth, sta->addr);
 679
 680         hostapd_drv_sta_deauth(hapd, sta->addr,
 681                                WLAN_REASON_PREV_AUTH_NOT_VALID);
 682         ap_sta_deauthenticate(hapd, sta, WLAN_REASON_PREV_AUTH_NOT_VALID);
 683
 684         return RADIUS_DAS_SUCCESS;
 685 }
 686
 687 #endif /* CONFIG_NO_RADIUS */
 688
 689
 690 /**
 691  * hostapd_setup_bss - Per-BSS setup (initialization)
 692  * @hapd: Pointer to BSS data
 693  * @first: Whether this BSS is the first BSS of an interface; -1 = not first,
 694  *      but interface may exist
 695  *
 696  * This function is used to initialize all per-BSS data structures and
 697  * resources. This gets called in a loop for each BSS when an interface is
 698  * initialized. Most of the modules that are initialized here will be
 699  * deinitialized in hostapd_cleanup().
 700  */
 701 static int hostapd_setup_bss(struct hostapd_data *hapd, int first)
 702 {
 703         struct hostapd_bss_config *conf = hapd->conf;
 704         u8 ssid[HOSTAPD_MAX_SSID_LEN + 1];
 705         int ssid_len, set_ssid;
 706         char force_ifname[IFNAMSIZ];
 707         u8 if_addr[ETH_ALEN];
 708         int flush_old_stations = 1;
 709
 710         wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s), first=%d)",
 711                    __func__, hapd, conf->iface, first);
 712
 713 #ifdef EAP_SERVER_TNC
 714         if (conf->tnc && tncs_global_init() < 0) {
 715                 wpa_printf(MSG_ERROR, "Failed to initialize TNCS");
 716                 return -1;
 717         }
 718 #endif /* EAP_SERVER_TNC */
 719
 720         if (hapd->started) {
 721                 wpa_printf(MSG_ERROR, "%s: Interface %s was already started",
 722                            __func__, conf->iface);
 723                 return -1;
 724         }
 725         hapd->started = 1;
 726
 727         if (!first || first == -1) {
 728                 if (hostapd_mac_comp_empty(conf->bssid) == 0) {
 729                         /* Allocate the next available BSSID. */
 730                         do {
 731                                 inc_byte_array(hapd->own_addr, ETH_ALEN);
 732                         } while (mac_in_conf(hapd->iconf, hapd->own_addr));
 733                 } else {
 734                         /* Allocate the configured BSSID. */
 735                         os_memcpy(hapd->own_addr, conf->bssid, ETH_ALEN);
 736
 737                         if (hostapd_mac_comp(hapd->own_addr,
 738                                              hapd->iface->bss[0]->own_addr) ==
 739                             0) {
 740                                 wpa_printf(MSG_ERROR, "BSS '%s' may not have "
 741                                            "BSSID set to the MAC address of "
 742                                            "the radio", conf->iface);
 743                                 return -1;
 744                         }
 745                 }
 746
 747                 hapd->interface_added = 1;
 748                 if (hostapd_if_add(hapd->iface->bss[0], WPA_IF_AP_BSS,
 749                                    conf->iface, hapd->own_addr, hapd,
 750                                    &hapd->drv_priv, force_ifname, if_addr,
 751                                    conf->bridge[0] ? conf->bridge : NULL,
 752                                    first == -1)) {
 753                         wpa_printf(MSG_ERROR, "Failed to add BSS (BSSID="
 754                                    MACSTR ")", MAC2STR(hapd->own_addr));
 755                         hapd->interface_added = 0;
 756                         return -1;
 757                 }
 758         }
 759
 760         if (conf->wmm_enabled < 0)
 761                 conf->wmm_enabled = hapd->iconf->ieee80211n;
 762
 763 #ifdef CONFIG_MESH
 764         if (hapd->iface->mconf == NULL)
 765                 flush_old_stations = 0;
 766 #endif /* CONFIG_MESH */
 767
 768         if (flush_old_stations)
 769                 hostapd_flush_old_stations(hapd,
 770                                            WLAN_REASON_PREV_AUTH_NOT_VALID);
 771         hostapd_set_privacy(hapd, 0);
 772
 773         hostapd_broadcast_wep_clear(hapd);
 774         if (hostapd_setup_encryption(conf->iface, hapd))
 775                 return -1;
 776
 777         /*
 778          * Fetch the SSID from the system and use it or,
 779          * if one was specified in the config file, verify they
 780          * match.
 781          */
 782         ssid_len = hostapd_get_ssid(hapd, ssid, sizeof(ssid));
 783         if (ssid_len < 0) {
 784                 wpa_printf(MSG_ERROR, "Could not read SSID from system");
 785                 return -1;
 786         }
 787         if (conf->ssid.ssid_set) {
 788                 /*
 789                  * If SSID is specified in the config file and it differs
 790                  * from what is being used then force installation of the
 791                  * new SSID.
 792                  */
 793                 set_ssid = (conf->ssid.ssid_len != (size_t) ssid_len ||
 794                             os_memcmp(conf->ssid.ssid, ssid, ssid_len) != 0);
 795         } else {
 796                 /*
 797                  * No SSID in the config file; just use the one we got
 798                  * from the system.
 799                  */
 800                 set_ssid = 0;
 801                 conf->ssid.ssid_len = ssid_len;
 802                 os_memcpy(conf->ssid.ssid, ssid, conf->ssid.ssid_len);
 803         }
 804
 805         if (!hostapd_drv_none(hapd)) {
 806                 wpa_printf(MSG_ERROR, "Using interface %s with hwaddr " MACSTR
 807                            " and ssid \"%s\"",
 808                            conf->iface, MAC2STR(hapd->own_addr),
 809                            wpa_ssid_txt(conf->ssid.ssid, conf->ssid.ssid_len));
 810         }
 811
 812         if (hostapd_setup_wpa_psk(conf)) {
 813                 wpa_printf(MSG_ERROR, "WPA-PSK setup failed.");
 814                 return -1;
 815         }
 816
 817         /* Set SSID for the kernel driver (to be used in beacon and probe
 818          * response frames) */
 819         if (set_ssid && hostapd_set_ssid(hapd, conf->ssid.ssid,
 820                                          conf->ssid.ssid_len)) {
 821                 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
 822                 return -1;
 823         }
 824
 825         if (wpa_debug_level <= MSG_MSGDUMP)
 826                 conf->radius->msg_dumps = 1;
 827 #ifndef CONFIG_NO_RADIUS
 828         hapd->radius = radius_client_init(hapd, conf->radius);
 829         if (hapd->radius == NULL) {
 830                 wpa_printf(MSG_ERROR, "RADIUS client initialization failed.");
 831                 return -1;
 832         }
 833
 834         if (conf->radius_das_port) {
 835                 struct radius_das_conf das_conf;
 836                 os_memset(&das_conf, 0, sizeof(das_conf));
 837                 das_conf.port = conf->radius_das_port;
 838                 das_conf.shared_secret = conf->radius_das_shared_secret;
 839                 das_conf.shared_secret_len =
 840                         conf->radius_das_shared_secret_len;
 841                 das_conf.client_addr = &conf->radius_das_client_addr;
 842                 das_conf.time_window = conf->radius_das_time_window;
 843                 das_conf.require_event_timestamp =
 844                         conf->radius_das_require_event_timestamp;
 845                 das_conf.ctx = hapd;
 846                 das_conf.disconnect = hostapd_das_disconnect;
 847                 hapd->radius_das = radius_das_init(&das_conf);
 848                 if (hapd->radius_das == NULL) {
 849                         wpa_printf(MSG_ERROR, "RADIUS DAS initialization "
 850                                    "failed.");
 851                         return -1;
 852                 }
 853         }
 854 #endif /* CONFIG_NO_RADIUS */
 855
 856         if (hostapd_acl_init(hapd)) {
 857                 wpa_printf(MSG_ERROR, "ACL initialization failed.");
 858                 return -1;
 859         }
 860         if (hostapd_init_wps(hapd, conf))
 861                 return -1;
 862
 863         if (authsrv_init(hapd) < 0)
 864                 return -1;
 865
 866         if (ieee802_1x_init(hapd)) {
 867                 wpa_printf(MSG_ERROR, "IEEE 802.1X initialization failed.");
 868                 return -1;
 869         }
 870
 871         if ((conf->wpa || conf->osen) && hostapd_setup_wpa(hapd))
 872                 return -1;
 873
 874         if (accounting_init(hapd)) {
 875                 wpa_printf(MSG_ERROR, "Accounting initialization failed.");
 876                 return -1;
 877         }
 878
 879         if (conf->ieee802_11f &&
 880             (hapd->iapp = iapp_init(hapd, conf->iapp_iface)) == NULL) {
 881                 wpa_printf(MSG_ERROR, "IEEE 802.11F (IAPP) initialization "
 882                            "failed.");
 883                 return -1;
 884         }
 885
 886 #ifdef CONFIG_INTERWORKING
 887         if (gas_serv_init(hapd)) {
 888                 wpa_printf(MSG_ERROR, "GAS server initialization failed");
 889                 return -1;
 890         }
 891
 892         if (conf->qos_map_set_len &&
 893             hostapd_drv_set_qos_map(hapd, conf->qos_map_set,
 894                                     conf->qos_map_set_len)) {
 895                 wpa_printf(MSG_ERROR, "Failed to initialize QoS Map");
 896                 return -1;
 897         }
 898 #endif /* CONFIG_INTERWORKING */
 899
 900         if (conf->bss_load_update_period && bss_load_update_init(hapd)) {
 901                 wpa_printf(MSG_ERROR, "BSS Load initialization failed");
 902                 return -1;
 903         }
 904
 905         if (conf->proxy_arp) {
 906                 if (x_snoop_init(hapd)) {
 907                         wpa_printf(MSG_ERROR,
 908                                    "Generic snooping infrastructure initialization failed");
 909                         return -1;
 910                 }
 911
 912                 if (dhcp_snoop_init(hapd)) {
 913                         wpa_printf(MSG_ERROR,
 914                                    "DHCP snooping initialization failed");
 915                         return -1;
 916                 }
 917
 918                 if (ndisc_snoop_init(hapd)) {
 919                         wpa_printf(MSG_ERROR,
 920                                    "Neighbor Discovery snooping initialization failed");
 921                         return -1;
 922                 }
 923         }
 924
 925         if (!hostapd_drv_none(hapd) && vlan_init(hapd)) {
 926                 wpa_printf(MSG_ERROR, "VLAN initialization failed.");
 927                 return -1;
 928         }
 929
 930         if (!conf->start_disabled && ieee802_11_set_beacon(hapd) < 0)
 931                 return -1;
 932
 933         if (hapd->wpa_auth && wpa_init_keys(hapd->wpa_auth) < 0)
 934                 return -1;
 935
 936         if (hapd->driver && hapd->driver->set_operstate)
 937                 hapd->driver->set_operstate(hapd->drv_priv, 1);
 938
 939         return 0;
 940 }
 941
 942
 943 static void hostapd_tx_queue_params(struct hostapd_iface *iface)
 944 {
 945         struct hostapd_data *hapd = iface->bss[0];
 946         int i;
 947         struct hostapd_tx_queue_params *p;
 948
 949 #ifdef CONFIG_MESH
 950         if (iface->mconf == NULL)
 951                 return;
 952 #endif /* CONFIG_MESH */
 953
 954         for (i = 0; i < NUM_TX_QUEUES; i++) {
 955                 p = &iface->conf->tx_queue[i];
 956
 957                 if (hostapd_set_tx_queue_params(hapd, i, p->aifs, p->cwmin,
 958                                                 p->cwmax, p->burst)) {
 959                         wpa_printf(MSG_DEBUG, "Failed to set TX queue "
 960                                    "parameters for queue %d.", i);
 961                         /* Continue anyway */
 962                 }
 963         }
 964 }
 965
 966
 967 static int hostapd_set_acl_list(struct hostapd_data *hapd,
 968                                 struct mac_acl_entry *mac_acl,
 969                                 int n_entries, u8 accept_acl)
 970 {
 971         struct hostapd_acl_params *acl_params;
 972         int i, err;
 973
 974         acl_params = os_zalloc(sizeof(*acl_params) +
 975                                (n_entries * sizeof(acl_params->mac_acl[0])));
 976         if (!acl_params)
 977                 return -ENOMEM;
 978
 979         for (i = 0; i < n_entries; i++)
 980                 os_memcpy(acl_params->mac_acl[i].addr, mac_acl[i].addr,
 981                           ETH_ALEN);
 982
 983         acl_params->acl_policy = accept_acl;
 984         acl_params->num_mac_acl = n_entries;
 985
 986         err = hostapd_drv_set_acl(hapd, acl_params);
 987
 988         os_free(acl_params);
 989
 990         return err;
 991 }
 992
 993
 994 static void hostapd_set_acl(struct hostapd_data *hapd)
 995 {
 996         struct hostapd_config *conf = hapd->iconf;
 997         int err;
 998         u8 accept_acl;
 999
1000         if (hapd->iface->drv_max_acl_mac_addrs == 0)
1001                 return;
1002
1003         if (conf->bss[0]->macaddr_acl == DENY_UNLESS_ACCEPTED) {
1004                 accept_acl = 1;
1005                 err = hostapd_set_acl_list(hapd, conf->bss[0]->accept_mac,
1006                                            conf->bss[0]->num_accept_mac,
1007                                            accept_acl);
1008                 if (err) {
1009                         wpa_printf(MSG_DEBUG, "Failed to set accept acl");
1010                         return;
1011                 }
1012         } else if (conf->bss[0]->macaddr_acl == ACCEPT_UNLESS_DENIED) {
1013                 accept_acl = 0;
1014                 err = hostapd_set_acl_list(hapd, conf->bss[0]->deny_mac,
1015                                            conf->bss[0]->num_deny_mac,
1016                                            accept_acl);
1017                 if (err) {
1018                         wpa_printf(MSG_DEBUG, "Failed to set deny acl");
1019                         return;
1020                 }
1021         }
1022 }
1023
1024
1025 static int start_ctrl_iface_bss(struct hostapd_data *hapd)
1026 {
1027         if (!hapd->iface->interfaces ||
1028             !hapd->iface->interfaces->ctrl_iface_init)
1029                 return 0;
1030
1031         if (hapd->iface->interfaces->ctrl_iface_init(hapd)) {
1032                 wpa_printf(MSG_ERROR,
1033                            "Failed to setup control interface for %s",
1034                            hapd->conf->iface);
1035                 return -1;
1036         }
1037
1038         return 0;
1039 }
1040
1041
1042 static int start_ctrl_iface(struct hostapd_iface *iface)
1043 {
1044         size_t i;
1045
1046         if (!iface->interfaces || !iface->interfaces->ctrl_iface_init)
1047                 return 0;
1048
1049         for (i = 0; i < iface->num_bss; i++) {
1050                 struct hostapd_data *hapd = iface->bss[i];
1051                 if (iface->interfaces->ctrl_iface_init(hapd)) {
1052                         wpa_printf(MSG_ERROR,
1053                                    "Failed to setup control interface for %s",
1054                                    hapd->conf->iface);
1055                         return -1;
1056                 }
1057         }
1058
1059         return 0;
1060 }
1061
1062
1063 static void channel_list_update_timeout(void *eloop_ctx, void *timeout_ctx)
1064 {
1065         struct hostapd_iface *iface = eloop_ctx;
1066
1067         if (!iface->wait_channel_update) {
1068                 wpa_printf(MSG_INFO, "Channel list update timeout, but interface was not waiting for it");
1069                 return;
1070         }
1071
1072         /*
1073          * It is possible that the existing channel list is acceptable, so try
1074          * to proceed.
1075          */
1076         wpa_printf(MSG_DEBUG, "Channel list update timeout - try to continue anyway");
1077         setup_interface2(iface);
1078 }
1079
1080
1081 void hostapd_channel_list_updated(struct hostapd_iface *iface, int initiator)
1082 {
1083         if (!iface->wait_channel_update || initiator != REGDOM_SET_BY_USER)
1084                 return;
1085
1086         wpa_printf(MSG_DEBUG, "Channel list updated - continue setup");
1087         eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
1088         setup_interface2(iface);
1089 }
1090
1091
1092 static int setup_interface(struct hostapd_iface *iface)
1093 {
1094         struct hostapd_data *hapd = iface->bss[0];
1095         size_t i;
1096
1097         /*
1098          * It is possible that setup_interface() is called after the interface
1099          * was disabled etc., in which case driver_ap_teardown is possibly set
1100          * to 1. Clear it here so any other key/station deletion, which is not
1101          * part of a teardown flow, would also call the relevant driver
1102          * callbacks.
1103          */
1104         iface->driver_ap_teardown = 0;
1105
1106         if (!iface->phy[0]) {
1107                 const char *phy = hostapd_drv_get_radio_name(hapd);
1108                 if (phy) {
1109                         wpa_printf(MSG_DEBUG, "phy: %s", phy);
1110                         os_strlcpy(iface->phy, phy, sizeof(iface->phy));
1111                 }
1112         }
1113
1114         /*
1115          * Make sure that all BSSes get configured with a pointer to the same
1116          * driver interface.
1117          */
1118         for (i = 1; i < iface->num_bss; i++) {
1119                 iface->bss[i]->driver = hapd->driver;
1120                 iface->bss[i]->drv_priv = hapd->drv_priv;
1121         }
1122
1123         if (hostapd_validate_bssid_configuration(iface))
1124                 return -1;
1125
1126         /*
1127          * Initialize control interfaces early to allow external monitoring of
1128          * channel setup operations that may take considerable amount of time
1129          * especially for DFS cases.
1130          */
1131         if (start_ctrl_iface(iface))
1132                 return -1;
1133
1134         if (hapd->iconf->country[0] && hapd->iconf->country[1]) {
1135                 char country[4], previous_country[4];
1136
1137                 hostapd_set_state(iface, HAPD_IFACE_COUNTRY_UPDATE);
1138                 if (hostapd_get_country(hapd, previous_country) < 0)
1139                         previous_country[0] = '\0';
1140
1141                 os_memcpy(country, hapd->iconf->country, 3);
1142                 country[3] = '\0';
1143                 if (hostapd_set_country(hapd, country) < 0) {
1144                         wpa_printf(MSG_ERROR, "Failed to set country code");
1145                         return -1;
1146                 }
1147
1148                 wpa_printf(MSG_DEBUG, "Previous country code %s, new country code %s",
1149                            previous_country, country);
1150
1151                 if (os_strncmp(previous_country, country, 2) != 0) {
1152                         wpa_printf(MSG_DEBUG, "Continue interface setup after channel list update");
1153                         iface->wait_channel_update = 1;
1154                         eloop_register_timeout(5, 0,
1155                                                channel_list_update_timeout,
1156                                                iface, NULL);
1157                         return 0;
1158                 }
1159         }
1160
1161         return setup_interface2(iface);
1162 }
1163
1164
1165 static int setup_interface2(struct hostapd_iface *iface)
1166 {
1167         iface->wait_channel_update = 0;
1168
1169         if (hostapd_get_hw_features(iface)) {
1170                 /* Not all drivers support this yet, so continue without hw
1171                  * feature data. */
1172         } else {
1173                 int ret = hostapd_select_hw_mode(iface);
1174                 if (ret < 0) {
1175                         wpa_printf(MSG_ERROR, "Could not select hw_mode and "
1176                                    "channel. (%d)", ret);
1177                         goto fail;
1178                 }
1179                 if (ret == 1) {
1180                         wpa_printf(MSG_DEBUG, "Interface initialization will be completed in a callback (ACS)");
1181                         return 0;
1182                 }
1183                 ret = hostapd_check_ht_capab(iface);
1184                 if (ret < 0)
1185                         goto fail;
1186                 if (ret == 1) {
1187                         wpa_printf(MSG_DEBUG, "Interface initialization will "
1188                                    "be completed in a callback");
1189                         return 0;
1190                 }
1191
1192                 if (iface->conf->ieee80211h)
1193                         wpa_printf(MSG_DEBUG, "DFS support is enabled");
1194         }
1195         return hostapd_setup_interface_complete(iface, 0);
1196
1197 fail:
1198         hostapd_set_state(iface, HAPD_IFACE_DISABLED);
1199         wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
1200         if (iface->interfaces && iface->interfaces->terminate_on_error)
1201                 eloop_terminate();
1202         return -1;
1203 }
1204
1205
1206 /**
1207  * hostapd_setup_interface_complete - Complete interface setup
1208  *
1209  * This function is called when previous steps in the interface setup has been
1210  * completed. This can also start operations, e.g., DFS, that will require
1211  * additional processing before interface is ready to be enabled. Such
1212  * operations will call this function from eloop callbacks when finished.
1213  */
1214 int hostapd_setup_interface_complete(struct hostapd_iface *iface, int err)
1215 {
1216         struct hostapd_data *hapd = iface->bss[0];
1217         size_t j;
1218         u8 *prev_addr;
1219         int delay_apply_cfg = 0;
1220
1221         if (err)
1222                 goto fail;
1223
1224         wpa_printf(MSG_DEBUG, "Completing interface initialization");
1225         if (iface->conf->channel) {
1226 #ifdef NEED_AP_MLME
1227                 int res;
1228 #endif /* NEED_AP_MLME */
1229
1230                 iface->freq = hostapd_hw_get_freq(hapd, iface->conf->channel);
1231                 wpa_printf(MSG_DEBUG, "Mode: %s  Channel: %d  "
1232                            "Frequency: %d MHz",
1233                            hostapd_hw_mode_txt(iface->conf->hw_mode),
1234                            iface->conf->channel, iface->freq);
1235
1236 #ifdef NEED_AP_MLME
1237                 /* Handle DFS only if it is not offloaded to the driver */
1238                 if (!(iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD)) {
1239                         /* Check DFS */
1240                         res = hostapd_handle_dfs(iface);
1241                         if (res <= 0) {
1242                                 if (res < 0)
1243                                         goto fail;
1244                                 return res;
1245                         }
1246                 }
1247 #endif /* NEED_AP_MLME */
1248
1249 #ifdef CONFIG_MESH
1250                 if (iface->mconf != NULL) {
1251                         wpa_printf(MSG_DEBUG,
1252                                    "%s: Mesh configuration will be applied while joining the mesh network",
1253                                    iface->bss[0]->conf->iface);
1254                         delay_apply_cfg = 1;
1255                 }
1256 #endif /* CONFIG_MESH */
1257
1258                 if (!delay_apply_cfg &&
1259                     hostapd_set_freq(hapd, hapd->iconf->hw_mode, iface->freq,
1260                                      hapd->iconf->channel,
1261                                      hapd->iconf->ieee80211n,
1262                                      hapd->iconf->ieee80211ac,
1263                                      hapd->iconf->secondary_channel,
1264                                      hapd->iconf->vht_oper_chwidth,
1265                                      hapd->iconf->vht_oper_centr_freq_seg0_idx,
1266                                      hapd->iconf->vht_oper_centr_freq_seg1_idx)) {
1267                         wpa_printf(MSG_ERROR, "Could not set channel for "
1268                                    "kernel driver");
1269                         goto fail;
1270                 }
1271         }
1272
1273         if (iface->current_mode) {
1274                 if (hostapd_prepare_rates(iface, iface->current_mode)) {
1275                         wpa_printf(MSG_ERROR, "Failed to prepare rates "
1276                                    "table.");
1277                         hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
1278                                        HOSTAPD_LEVEL_WARNING,
1279                                        "Failed to prepare rates table.");
1280                         goto fail;
1281                 }
1282         }
1283
1284         if (hapd->iconf->rts_threshold > -1 &&
1285             hostapd_set_rts(hapd, hapd->iconf->rts_threshold)) {
1286                 wpa_printf(MSG_ERROR, "Could not set RTS threshold for "
1287                            "kernel driver");
1288                 goto fail;
1289         }
1290
1291         if (hapd->iconf->fragm_threshold > -1 &&
1292             hostapd_set_frag(hapd, hapd->iconf->fragm_threshold)) {
1293                 wpa_printf(MSG_ERROR, "Could not set fragmentation threshold "
1294                            "for kernel driver");
1295                 goto fail;
1296         }
1297
1298         prev_addr = hapd->own_addr;
1299
1300         for (j = 0; j < iface->num_bss; j++) {
1301                 hapd = iface->bss[j];
1302                 if (j)
1303                         os_memcpy(hapd->own_addr, prev_addr, ETH_ALEN);
1304                 if (hostapd_setup_bss(hapd, j == 0)) {
1305                         do {
1306                                 hapd = iface->bss[j];
1307                                 hostapd_bss_deinit_no_free(hapd);
1308                                 hostapd_free_hapd_data(hapd);
1309                         } while (j-- > 0);
1310                         goto fail;
1311                 }
1312                 if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0)
1313                         prev_addr = hapd->own_addr;
1314         }
1315         hapd = iface->bss[0];
1316
1317         hostapd_tx_queue_params(iface);
1318
1319         ap_list_init(iface);
1320
1321         hostapd_set_acl(hapd);
1322
1323         if (hostapd_driver_commit(hapd) < 0) {
1324                 wpa_printf(MSG_ERROR, "%s: Failed to commit driver "
1325                            "configuration", __func__);
1326                 goto fail;
1327         }
1328
1329         /*
1330          * WPS UPnP module can be initialized only when the "upnp_iface" is up.
1331          * If "interface" and "upnp_iface" are the same (e.g., non-bridge
1332          * mode), the interface is up only after driver_commit, so initialize
1333          * WPS after driver_commit.
1334          */
1335         for (j = 0; j < iface->num_bss; j++) {
1336                 if (hostapd_init_wps_complete(iface->bss[j]))
1337                         goto fail;
1338         }
1339
1340         hostapd_set_state(iface, HAPD_IFACE_ENABLED);
1341         wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_ENABLED);
1342         if (hapd->setup_complete_cb)
1343                 hapd->setup_complete_cb(hapd->setup_complete_cb_ctx);
1344
1345         wpa_printf(MSG_DEBUG, "%s: Setup of interface done.",
1346                    iface->bss[0]->conf->iface);
1347         if (iface->interfaces && iface->interfaces->terminate_on_error > 0)
1348                 iface->interfaces->terminate_on_error--;
1349
1350         return 0;
1351
1352 fail:
1353         wpa_printf(MSG_ERROR, "Interface initialization failed");
1354         hostapd_set_state(iface, HAPD_IFACE_DISABLED);
1355         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
1356         if (iface->interfaces && iface->interfaces->terminate_on_error)
1357                 eloop_terminate();
1358         return -1;
1359 }
1360
1361
1362 /**
1363  * hostapd_setup_interface - Setup of an interface
1364  * @iface: Pointer to interface data.
1365  * Returns: 0 on success, -1 on failure
1366  *
1367  * Initializes the driver interface, validates the configuration,
1368  * and sets driver parameters based on the configuration.
1369  * Flushes old stations, sets the channel, encryption,
1370  * beacons, and WDS links based on the configuration.
1371  *
1372  * If interface setup requires more time, e.g., to perform HT co-ex scans, ACS,
1373  * or DFS operations, this function returns 0 before such operations have been
1374  * completed. The pending operations are registered into eloop and will be
1375  * completed from eloop callbacks. Those callbacks end up calling
1376  * hostapd_setup_interface_complete() once setup has been completed.
1377  */
1378 int hostapd_setup_interface(struct hostapd_iface *iface)
1379 {
1380         int ret;
1381
1382         ret = setup_interface(iface);
1383         if (ret) {
1384                 wpa_printf(MSG_ERROR, "%s: Unable to setup interface.",
1385                            iface->bss[0]->conf->iface);
1386                 return -1;
1387         }
1388
1389         return 0;
1390 }
1391
1392
1393 /**
1394  * hostapd_alloc_bss_data - Allocate and initialize per-BSS data
1395  * @hapd_iface: Pointer to interface data
1396  * @conf: Pointer to per-interface configuration
1397  * @bss: Pointer to per-BSS configuration for this BSS
1398  * Returns: Pointer to allocated BSS data
1399  *
1400  * This function is used to allocate per-BSS data structure. This data will be
1401  * freed after hostapd_cleanup() is called for it during interface
1402  * deinitialization.
1403  */
1404 struct hostapd_data *
1405 hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface,
1406                        struct hostapd_config *conf,
1407                        struct hostapd_bss_config *bss)
1408 {
1409         struct hostapd_data *hapd;
1410
1411         hapd = os_zalloc(sizeof(*hapd));
1412         if (hapd == NULL)
1413                 return NULL;
1414
1415         hapd->new_assoc_sta_cb = hostapd_new_assoc_sta;
1416         hapd->iconf = conf;
1417         hapd->conf = bss;
1418         hapd->iface = hapd_iface;
1419         hapd->driver = hapd->iconf->driver;
1420         hapd->ctrl_sock = -1;
1421
1422         return hapd;
1423 }
1424
1425
1426 static void hostapd_bss_deinit(struct hostapd_data *hapd)
1427 {
1428         wpa_printf(MSG_DEBUG, "%s: deinit bss %s", __func__,
1429                    hapd->conf->iface);
1430         hostapd_bss_deinit_no_free(hapd);
1431         hostapd_cleanup(hapd);
1432 }
1433
1434
1435 void hostapd_interface_deinit(struct hostapd_iface *iface)
1436 {
1437         int j;
1438
1439         wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
1440         if (iface == NULL)
1441                 return;
1442
1443 #ifdef CONFIG_IEEE80211N
1444 #ifdef NEED_AP_MLME
1445         hostapd_stop_setup_timers(iface);
1446         eloop_cancel_timeout(ap_ht2040_timeout, iface, NULL);
1447 #endif /* NEED_AP_MLME */
1448 #endif /* CONFIG_IEEE80211N */
1449         eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
1450         iface->wait_channel_update = 0;
1451
1452         for (j = iface->num_bss - 1; j >= 0; j--)
1453                 hostapd_bss_deinit(iface->bss[j]);
1454 }
1455
1456
1457 void hostapd_interface_free(struct hostapd_iface *iface)
1458 {
1459         size_t j;
1460         wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
1461         for (j = 0; j < iface->num_bss; j++) {
1462                 wpa_printf(MSG_DEBUG, "%s: free hapd %p",
1463                            __func__, iface->bss[j]);
1464                 os_free(iface->bss[j]);
1465         }
1466         hostapd_cleanup_iface(iface);
1467 }
1468
1469
1470 /**
1471  * hostapd_init - Allocate and initialize per-interface data
1472  * @config_file: Path to the configuration file
1473  * Returns: Pointer to the allocated interface data or %NULL on failure
1474  *
1475  * This function is used to allocate main data structures for per-interface
1476  * data. The allocated data buffer will be freed by calling
1477  * hostapd_cleanup_iface().
1478  */
1479 struct hostapd_iface * hostapd_init(struct hapd_interfaces *interfaces,
1480                                     const char *config_file)
1481 {
1482         struct hostapd_iface *hapd_iface = NULL;
1483         struct hostapd_config *conf = NULL;
1484         struct hostapd_data *hapd;
1485         size_t i;
1486
1487         hapd_iface = os_zalloc(sizeof(*hapd_iface));
1488         if (hapd_iface == NULL)
1489                 goto fail;
1490
1491         hapd_iface->config_fname = os_strdup(config_file);
1492         if (hapd_iface->config_fname == NULL)
1493                 goto fail;
1494
1495         conf = interfaces->config_read_cb(hapd_iface->config_fname);
1496         if (conf == NULL)
1497                 goto fail;
1498         hapd_iface->conf = conf;
1499
1500         hapd_iface->num_bss = conf->num_bss;
1501         hapd_iface->bss = os_calloc(conf->num_bss,
1502                                     sizeof(struct hostapd_data *));
1503         if (hapd_iface->bss == NULL)
1504                 goto fail;
1505
1506         for (i = 0; i < conf->num_bss; i++) {
1507                 hapd = hapd_iface->bss[i] =
1508                         hostapd_alloc_bss_data(hapd_iface, conf,
1509                                                conf->bss[i]);
1510                 if (hapd == NULL)
1511                         goto fail;
1512                 hapd->msg_ctx = hapd;
1513         }
1514
1515         return hapd_iface;
1516
1517 fail:
1518         wpa_printf(MSG_ERROR, "Failed to set up interface with %s",
1519                    config_file);
1520         if (conf)
1521                 hostapd_config_free(conf);
1522         if (hapd_iface) {
1523                 os_free(hapd_iface->config_fname);
1524                 os_free(hapd_iface->bss);
1525                 wpa_printf(MSG_DEBUG, "%s: free iface %p",
1526                            __func__, hapd_iface);
1527                 os_free(hapd_iface);
1528         }
1529         return NULL;
1530 }
1531
1532
1533 static int ifname_in_use(struct hapd_interfaces *interfaces, const char *ifname)
1534 {
1535         size_t i, j;
1536
1537         for (i = 0; i < interfaces->count; i++) {
1538                 struct hostapd_iface *iface = interfaces->iface[i];
1539                 for (j = 0; j < iface->num_bss; j++) {
1540                         struct hostapd_data *hapd = iface->bss[j];
1541                         if (os_strcmp(ifname, hapd->conf->iface) == 0)
1542                                 return 1;
1543                 }
1544         }
1545
1546         return 0;
1547 }
1548
1549
1550 /**
1551  * hostapd_interface_init_bss - Read configuration file and init BSS data
1552  *
1553  * This function is used to parse configuration file for a BSS. This BSS is
1554  * added to an existing interface sharing the same radio (if any) or a new
1555  * interface is created if this is the first interface on a radio. This
1556  * allocate memory for the BSS. No actual driver operations are started.
1557  *
1558  * This is similar to hostapd_interface_init(), but for a case where the
1559  * configuration is used to add a single BSS instead of all BSSes for a radio.
1560  */
1561 struct hostapd_iface *
1562 hostapd_interface_init_bss(struct hapd_interfaces *interfaces, const char *phy,
1563                            const char *config_fname, int debug)
1564 {
1565         struct hostapd_iface *new_iface = NULL, *iface = NULL;
1566         struct hostapd_data *hapd;
1567         int k;
1568         size_t i, bss_idx;
1569
1570         if (!phy || !*phy)
1571                 return NULL;
1572
1573         for (i = 0; i < interfaces->count; i++) {
1574                 if (os_strcmp(interfaces->iface[i]->phy, phy) == 0) {
1575                         iface = interfaces->iface[i];
1576                         break;
1577                 }
1578         }
1579
1580         wpa_printf(MSG_INFO, "Configuration file: %s (phy %s)%s",
1581                    config_fname, phy, iface ? "" : " --> new PHY");
1582         if (iface) {
1583                 struct hostapd_config *conf;
1584                 struct hostapd_bss_config **tmp_conf;
1585                 struct hostapd_data **tmp_bss;
1586                 struct hostapd_bss_config *bss;
1587                 const char *ifname;
1588
1589                 /* Add new BSS to existing iface */
1590                 conf = interfaces->config_read_cb(config_fname);
1591                 if (conf == NULL)
1592                         return NULL;
1593                 if (conf->num_bss > 1) {
1594                         wpa_printf(MSG_ERROR, "Multiple BSSes specified in BSS-config");
1595                         hostapd_config_free(conf);
1596                         return NULL;
1597                 }
1598
1599                 ifname = conf->bss[0]->iface;
1600                 if (ifname[0] != '\0' && ifname_in_use(interfaces, ifname)) {
1601                         wpa_printf(MSG_ERROR,
1602                                    "Interface name %s already in use", ifname);
1603                         hostapd_config_free(conf);
1604                         return NULL;
1605                 }
1606
1607                 tmp_conf = os_realloc_array(
1608                         iface->conf->bss, iface->conf->num_bss + 1,
1609                         sizeof(struct hostapd_bss_config *));
1610                 tmp_bss = os_realloc_array(iface->bss, iface->num_bss + 1,
1611                                            sizeof(struct hostapd_data *));
1612                 if (tmp_bss)
1613                         iface->bss = tmp_bss;
1614                 if (tmp_conf) {
1615                         iface->conf->bss = tmp_conf;
1616                         iface->conf->last_bss = tmp_conf[0];
1617                 }
1618                 if (tmp_bss == NULL || tmp_conf == NULL) {
1619                         hostapd_config_free(conf);
1620                         return NULL;
1621                 }
1622                 bss = iface->conf->bss[iface->conf->num_bss] = conf->bss[0];
1623                 iface->conf->num_bss++;
1624
1625                 hapd = hostapd_alloc_bss_data(iface, iface->conf, bss);
1626                 if (hapd == NULL) {
1627                         iface->conf->num_bss--;
1628                         hostapd_config_free(conf);
1629                         return NULL;
1630                 }
1631                 iface->conf->last_bss = bss;
1632                 iface->bss[iface->num_bss] = hapd;
1633                 hapd->msg_ctx = hapd;
1634
1635                 bss_idx = iface->num_bss++;
1636                 conf->num_bss--;
1637                 conf->bss[0] = NULL;
1638                 hostapd_config_free(conf);
1639         } else {
1640                 /* Add a new iface with the first BSS */
1641                 new_iface = iface = hostapd_init(interfaces, config_fname);
1642                 if (!iface)
1643                         return NULL;
1644                 os_strlcpy(iface->phy, phy, sizeof(iface->phy));
1645                 iface->interfaces = interfaces;
1646                 bss_idx = 0;
1647         }
1648
1649         for (k = 0; k < debug; k++) {
1650                 if (iface->bss[bss_idx]->conf->logger_stdout_level > 0)
1651                         iface->bss[bss_idx]->conf->logger_stdout_level--;
1652         }
1653
1654         if (iface->conf->bss[bss_idx]->iface[0] == '\0' &&
1655             !hostapd_drv_none(iface->bss[bss_idx])) {
1656                 wpa_printf(MSG_ERROR, "Interface name not specified in %s",
1657                            config_fname);
1658                 if (new_iface)
1659                         hostapd_interface_deinit_free(new_iface);
1660                 return NULL;
1661         }
1662
1663         return iface;
1664 }
1665
1666
1667 void hostapd_interface_deinit_free(struct hostapd_iface *iface)
1668 {
1669         const struct wpa_driver_ops *driver;
1670         void *drv_priv;
1671
1672         wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
1673         if (iface == NULL)
1674                 return;
1675         wpa_printf(MSG_DEBUG, "%s: num_bss=%u conf->num_bss=%u",
1676                    __func__, (unsigned int) iface->num_bss,
1677                    (unsigned int) iface->conf->num_bss);
1678         driver = iface->bss[0]->driver;
1679         drv_priv = iface->bss[0]->drv_priv;
1680         hostapd_interface_deinit(iface);
1681         wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit",
1682                    __func__, driver, drv_priv);
1683         if (driver && driver->hapd_deinit && drv_priv) {
1684                 driver->hapd_deinit(drv_priv);
1685                 iface->bss[0]->drv_priv = NULL;
1686         }
1687         hostapd_interface_free(iface);
1688 }
1689
1690
1691 static void hostapd_deinit_driver(const struct wpa_driver_ops *driver,
1692                                   void *drv_priv,
1693                                   struct hostapd_iface *hapd_iface)
1694 {
1695         size_t j;
1696
1697         wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit",
1698                    __func__, driver, drv_priv);
1699         if (driver && driver->hapd_deinit && drv_priv) {
1700                 driver->hapd_deinit(drv_priv);
1701                 for (j = 0; j < hapd_iface->num_bss; j++) {
1702                         wpa_printf(MSG_DEBUG, "%s:bss[%d]->drv_priv=%p",
1703                                    __func__, (int) j,
1704                                    hapd_iface->bss[j]->drv_priv);
1705                         if (hapd_iface->bss[j]->drv_priv == drv_priv)
1706                                 hapd_iface->bss[j]->drv_priv = NULL;
1707                 }
1708         }
1709 }
1710
1711
1712 int hostapd_enable_iface(struct hostapd_iface *hapd_iface)
1713 {
1714         size_t j;
1715
1716         if (hapd_iface->bss[0]->drv_priv != NULL) {
1717                 wpa_printf(MSG_ERROR, "Interface %s already enabled",
1718                            hapd_iface->conf->bss[0]->iface);
1719                 return -1;
1720         }
1721
1722         wpa_printf(MSG_DEBUG, "Enable interface %s",
1723                    hapd_iface->conf->bss[0]->iface);
1724
1725         for (j = 0; j < hapd_iface->num_bss; j++)
1726                 hostapd_set_security_params(hapd_iface->conf->bss[j], 1);
1727         if (hostapd_config_check(hapd_iface->conf, 1) < 0) {
1728                 wpa_printf(MSG_INFO, "Invalid configuration - cannot enable");
1729                 return -1;
1730         }
1731
1732         if (hapd_iface->interfaces == NULL ||
1733             hapd_iface->interfaces->driver_init == NULL ||
1734             hapd_iface->interfaces->driver_init(hapd_iface))
1735                 return -1;
1736
1737         if (hostapd_setup_interface(hapd_iface)) {
1738                 hostapd_deinit_driver(hapd_iface->bss[0]->driver,
1739                                       hapd_iface->bss[0]->drv_priv,
1740                                       hapd_iface);
1741                 return -1;
1742         }
1743
1744         return 0;
1745 }
1746
1747
1748 int hostapd_reload_iface(struct hostapd_iface *hapd_iface)
1749 {
1750         size_t j;
1751
1752         wpa_printf(MSG_DEBUG, "Reload interface %s",
1753                    hapd_iface->conf->bss[0]->iface);
1754         for (j = 0; j < hapd_iface->num_bss; j++)
1755                 hostapd_set_security_params(hapd_iface->conf->bss[j], 1);
1756         if (hostapd_config_check(hapd_iface->conf, 1) < 0) {
1757                 wpa_printf(MSG_ERROR, "Updated configuration is invalid");
1758                 return -1;
1759         }
1760         hostapd_clear_old(hapd_iface);
1761         for (j = 0; j < hapd_iface->num_bss; j++)
1762                 hostapd_reload_bss(hapd_iface->bss[j]);
1763
1764         return 0;
1765 }
1766
1767
1768 int hostapd_disable_iface(struct hostapd_iface *hapd_iface)
1769 {
1770         size_t j;
1771         const struct wpa_driver_ops *driver;
1772         void *drv_priv;
1773
1774         if (hapd_iface == NULL)
1775                 return -1;
1776
1777         if (hapd_iface->bss[0]->drv_priv == NULL) {
1778                 wpa_printf(MSG_INFO, "Interface %s already disabled",
1779                            hapd_iface->conf->bss[0]->iface);
1780                 return -1;
1781         }
1782
1783         wpa_msg(hapd_iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
1784         driver = hapd_iface->bss[0]->driver;
1785         drv_priv = hapd_iface->bss[0]->drv_priv;
1786
1787         hapd_iface->driver_ap_teardown =
1788                 !!(hapd_iface->drv_flags &
1789                    WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
1790
1791         /* same as hostapd_interface_deinit without deinitializing ctrl-iface */
1792         for (j = 0; j < hapd_iface->num_bss; j++) {
1793                 struct hostapd_data *hapd = hapd_iface->bss[j];
1794                 hostapd_bss_deinit_no_free(hapd);
1795                 hostapd_free_hapd_data(hapd);
1796         }
1797
1798         hostapd_deinit_driver(driver, drv_priv, hapd_iface);
1799
1800         /* From hostapd_cleanup_iface: These were initialized in
1801          * hostapd_setup_interface and hostapd_setup_interface_complete
1802          */
1803         hostapd_cleanup_iface_partial(hapd_iface);
1804
1805         wpa_printf(MSG_DEBUG, "Interface %s disabled",
1806                    hapd_iface->bss[0]->conf->iface);
1807         hostapd_set_state(hapd_iface, HAPD_IFACE_DISABLED);
1808         return 0;
1809 }
1810
1811
1812 static struct hostapd_iface *
1813 hostapd_iface_alloc(struct hapd_interfaces *interfaces)
1814 {
1815         struct hostapd_iface **iface, *hapd_iface;
1816
1817         iface = os_realloc_array(interfaces->iface, interfaces->count + 1,
1818                                  sizeof(struct hostapd_iface *));
1819         if (iface == NULL)
1820                 return NULL;
1821         interfaces->iface = iface;
1822         hapd_iface = interfaces->iface[interfaces->count] =
1823                 os_zalloc(sizeof(*hapd_iface));
1824         if (hapd_iface == NULL) {
1825                 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for "
1826                            "the interface", __func__);
1827                 return NULL;
1828         }
1829         interfaces->count++;
1830         hapd_iface->interfaces = interfaces;
1831
1832         return hapd_iface;
1833 }
1834
1835
1836 static struct hostapd_config *
1837 hostapd_config_alloc(struct hapd_interfaces *interfaces, const char *ifname,
1838                      const char *ctrl_iface)
1839 {
1840         struct hostapd_bss_config *bss;
1841         struct hostapd_config *conf;
1842
1843         /* Allocates memory for bss and conf */
1844         conf = hostapd_config_defaults();
1845         if (conf == NULL) {
1846                  wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for "
1847                                 "configuration", __func__);
1848                 return NULL;
1849         }
1850
1851         conf->driver = wpa_drivers[0];
1852         if (conf->driver == NULL) {
1853                 wpa_printf(MSG_ERROR, "No driver wrappers registered!");
1854                 hostapd_config_free(conf);
1855                 return NULL;
1856         }
1857
1858         bss = conf->last_bss = conf->bss[0];
1859
1860         os_strlcpy(bss->iface, ifname, sizeof(bss->iface));
1861         bss->ctrl_interface = os_strdup(ctrl_iface);
1862         if (bss->ctrl_interface == NULL) {
1863                 hostapd_config_free(conf);
1864                 return NULL;
1865         }
1866
1867         /* Reading configuration file skipped, will be done in SET!
1868          * From reading the configuration till the end has to be done in
1869          * SET
1870          */
1871         return conf;
1872 }
1873
1874
1875 static int hostapd_data_alloc(struct hostapd_iface *hapd_iface,
1876                               struct hostapd_config *conf)
1877 {
1878         size_t i;
1879         struct hostapd_data *hapd;
1880
1881         hapd_iface->bss = os_calloc(conf->num_bss,
1882                                     sizeof(struct hostapd_data *));
1883         if (hapd_iface->bss == NULL)
1884                 return -1;
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                         while (i > 0) {
1891                                 i--;
1892                                 os_free(hapd_iface->bss[i]);
1893                                 hapd_iface->bss[i] = NULL;
1894                         }
1895                         os_free(hapd_iface->bss);
1896                         hapd_iface->bss = NULL;
1897                         return -1;
1898                 }
1899                 hapd->msg_ctx = hapd;
1900         }
1901
1902         hapd_iface->conf = conf;
1903         hapd_iface->num_bss = conf->num_bss;
1904
1905         return 0;
1906 }
1907
1908
1909 int hostapd_add_iface(struct hapd_interfaces *interfaces, char *buf)
1910 {
1911         struct hostapd_config *conf = NULL;
1912         struct hostapd_iface *hapd_iface = NULL, *new_iface = NULL;
1913         struct hostapd_data *hapd;
1914         char *ptr;
1915         size_t i, j;
1916         const char *conf_file = NULL, *phy_name = NULL;
1917
1918         if (os_strncmp(buf, "bss_config=", 11) == 0) {
1919                 char *pos;
1920                 phy_name = buf + 11;
1921                 pos = os_strchr(phy_name, ':');
1922                 if (!pos)
1923                         return -1;
1924                 *pos++ = '\0';
1925                 conf_file = pos;
1926                 if (!os_strlen(conf_file))
1927                         return -1;
1928
1929                 hapd_iface = hostapd_interface_init_bss(interfaces, phy_name,
1930                                                         conf_file, 0);
1931                 if (!hapd_iface)
1932                         return -1;
1933                 for (j = 0; j < interfaces->count; j++) {
1934                         if (interfaces->iface[j] == hapd_iface)
1935                                 break;
1936                 }
1937                 if (j == interfaces->count) {
1938                         struct hostapd_iface **tmp;
1939                         tmp = os_realloc_array(interfaces->iface,
1940                                                interfaces->count + 1,
1941                                                sizeof(struct hostapd_iface *));
1942                         if (!tmp) {
1943                                 hostapd_interface_deinit_free(hapd_iface);
1944                                 return -1;
1945                         }
1946                         interfaces->iface = tmp;
1947                         interfaces->iface[interfaces->count++] = hapd_iface;
1948                         new_iface = hapd_iface;
1949                 }
1950
1951                 if (new_iface) {
1952                         if (interfaces->driver_init(hapd_iface))
1953                                 goto fail;
1954
1955                         if (hostapd_setup_interface(hapd_iface)) {
1956                                 hostapd_deinit_driver(
1957                                         hapd_iface->bss[0]->driver,
1958                                         hapd_iface->bss[0]->drv_priv,
1959                                         hapd_iface);
1960                                 goto fail;
1961                         }
1962                 } else {
1963                         /* Assign new BSS with bss[0]'s driver info */
1964                         hapd = hapd_iface->bss[hapd_iface->num_bss - 1];
1965                         hapd->driver = hapd_iface->bss[0]->driver;
1966                         hapd->drv_priv = hapd_iface->bss[0]->drv_priv;
1967                         os_memcpy(hapd->own_addr, hapd_iface->bss[0]->own_addr,
1968                                   ETH_ALEN);
1969
1970                         if (start_ctrl_iface_bss(hapd) < 0 ||
1971                             (hapd_iface->state == HAPD_IFACE_ENABLED &&
1972                              hostapd_setup_bss(hapd, -1))) {
1973                                 hostapd_cleanup(hapd);
1974                                 hapd_iface->bss[hapd_iface->num_bss - 1] = NULL;
1975                                 hapd_iface->conf->num_bss--;
1976                                 hapd_iface->num_bss--;
1977                                 wpa_printf(MSG_DEBUG, "%s: free hapd %p %s",
1978                                            __func__, hapd, hapd->conf->iface);
1979                                 hostapd_config_free_bss(hapd->conf);
1980                                 hapd->conf = NULL;
1981                                 os_free(hapd);
1982                                 return -1;
1983                         }
1984                 }
1985                 return 0;
1986         }
1987
1988         ptr = os_strchr(buf, ' ');
1989         if (ptr == NULL)
1990                 return -1;
1991         *ptr++ = '\0';
1992
1993         if (os_strncmp(ptr, "config=", 7) == 0)
1994                 conf_file = ptr + 7;
1995
1996         for (i = 0; i < interfaces->count; i++) {
1997                 if (!os_strcmp(interfaces->iface[i]->conf->bss[0]->iface,
1998                                buf)) {
1999                         wpa_printf(MSG_INFO, "Cannot add interface - it "
2000                                    "already exists");
2001                         return -1;
2002                 }
2003         }
2004
2005         hapd_iface = hostapd_iface_alloc(interfaces);
2006         if (hapd_iface == NULL) {
2007                 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
2008                            "for interface", __func__);
2009                 goto fail;
2010         }
2011         new_iface = hapd_iface;
2012
2013         if (conf_file && interfaces->config_read_cb) {
2014                 conf = interfaces->config_read_cb(conf_file);
2015                 if (conf && conf->bss)
2016                         os_strlcpy(conf->bss[0]->iface, buf,
2017                                    sizeof(conf->bss[0]->iface));
2018         } else
2019                 conf = hostapd_config_alloc(interfaces, buf, ptr);
2020         if (conf == NULL || conf->bss == NULL) {
2021                 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
2022                            "for configuration", __func__);
2023                 goto fail;
2024         }
2025
2026         if (hostapd_data_alloc(hapd_iface, conf) < 0) {
2027                 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
2028                            "for hostapd", __func__);
2029                 goto fail;
2030         }
2031
2032         if (start_ctrl_iface(hapd_iface) < 0)
2033                 goto fail;
2034
2035         wpa_printf(MSG_INFO, "Add interface '%s'", conf->bss[0]->iface);
2036
2037         return 0;
2038
2039 fail:
2040         if (conf)
2041                 hostapd_config_free(conf);
2042         if (hapd_iface) {
2043                 if (hapd_iface->bss) {
2044                         for (i = 0; i < hapd_iface->num_bss; i++) {
2045                                 hapd = hapd_iface->bss[i];
2046                                 if (!hapd)
2047                                         continue;
2048                                 if (hapd_iface->interfaces &&
2049                                     hapd_iface->interfaces->ctrl_iface_deinit)
2050                                         hapd_iface->interfaces->
2051                                                 ctrl_iface_deinit(hapd);
2052                                 wpa_printf(MSG_DEBUG, "%s: free hapd %p (%s)",
2053                                            __func__, hapd_iface->bss[i],
2054                                            hapd->conf->iface);
2055                                 hostapd_cleanup(hapd);
2056                                 os_free(hapd);
2057                                 hapd_iface->bss[i] = NULL;
2058                         }
2059                         os_free(hapd_iface->bss);
2060                         hapd_iface->bss = NULL;
2061                 }
2062                 if (new_iface) {
2063                         interfaces->count--;
2064                         interfaces->iface[interfaces->count] = NULL;
2065                 }
2066                 hostapd_cleanup_iface(hapd_iface);
2067         }
2068         return -1;
2069 }
2070
2071
2072 static int hostapd_remove_bss(struct hostapd_iface *iface, unsigned int idx)
2073 {
2074         size_t i;
2075
2076         wpa_printf(MSG_INFO, "Remove BSS '%s'", iface->conf->bss[idx]->iface);
2077
2078         /* Remove hostapd_data only if it has already been initialized */
2079         if (idx < iface->num_bss) {
2080                 struct hostapd_data *hapd = iface->bss[idx];
2081
2082                 hostapd_bss_deinit(hapd);
2083                 wpa_printf(MSG_DEBUG, "%s: free hapd %p (%s)",
2084                            __func__, hapd, hapd->conf->iface);
2085                 hostapd_config_free_bss(hapd->conf);
2086                 hapd->conf = NULL;
2087                 os_free(hapd);
2088
2089                 iface->num_bss--;
2090
2091                 for (i = idx; i < iface->num_bss; i++)
2092                         iface->bss[i] = iface->bss[i + 1];
2093         } else {
2094                 hostapd_config_free_bss(iface->conf->bss[idx]);
2095                 iface->conf->bss[idx] = NULL;
2096         }
2097
2098         iface->conf->num_bss--;
2099         for (i = idx; i < iface->conf->num_bss; i++)
2100                 iface->conf->bss[i] = iface->conf->bss[i + 1];
2101
2102         return 0;
2103 }
2104
2105
2106 int hostapd_remove_iface(struct hapd_interfaces *interfaces, char *buf)
2107 {
2108         struct hostapd_iface *hapd_iface;
2109         size_t i, j, k = 0;
2110
2111         for (i = 0; i < interfaces->count; i++) {
2112                 hapd_iface = interfaces->iface[i];
2113                 if (hapd_iface == NULL)
2114                         return -1;
2115                 if (!os_strcmp(hapd_iface->conf->bss[0]->iface, buf)) {
2116                         wpa_printf(MSG_INFO, "Remove interface '%s'", buf);
2117                         hapd_iface->driver_ap_teardown =
2118                                 !!(hapd_iface->drv_flags &
2119                                    WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
2120
2121                         hostapd_interface_deinit_free(hapd_iface);
2122                         k = i;
2123                         while (k < (interfaces->count - 1)) {
2124                                 interfaces->iface[k] =
2125                                         interfaces->iface[k + 1];
2126                                 k++;
2127                         }
2128                         interfaces->count--;
2129                         return 0;
2130                 }
2131
2132                 for (j = 0; j < hapd_iface->conf->num_bss; j++) {
2133                         if (!os_strcmp(hapd_iface->conf->bss[j]->iface, buf)) {
2134                                 hapd_iface->driver_ap_teardown =
2135                                         !(hapd_iface->drv_flags &
2136                                           WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
2137                                 return hostapd_remove_bss(hapd_iface, j);
2138                         }
2139                 }
2140         }
2141         return -1;
2142 }
2143
2144
2145 /**
2146  * hostapd_new_assoc_sta - Notify that a new station associated with the AP
2147  * @hapd: Pointer to BSS data
2148  * @sta: Pointer to the associated STA data
2149  * @reassoc: 1 to indicate this was a re-association; 0 = first association
2150  *
2151  * This function will be called whenever a station associates with the AP. It
2152  * can be called from ieee802_11.c for drivers that export MLME to hostapd and
2153  * from drv_callbacks.c based on driver events for drivers that take care of
2154  * management frames (IEEE 802.11 authentication and association) internally.
2155  */
2156 void hostapd_new_assoc_sta(struct hostapd_data *hapd, struct sta_info *sta,
2157                            int reassoc)
2158 {
2159         if (hapd->tkip_countermeasures) {
2160                 hostapd_drv_sta_deauth(hapd, sta->addr,
2161                                        WLAN_REASON_MICHAEL_MIC_FAILURE);
2162                 return;
2163         }
2164
2165         hostapd_prune_associations(hapd, sta->addr);
2166
2167         /* IEEE 802.11F (IAPP) */
2168         if (hapd->conf->ieee802_11f)
2169                 iapp_new_station(hapd->iapp, sta);
2170
2171 #ifdef CONFIG_P2P
2172         if (sta->p2p_ie == NULL && !sta->no_p2p_set) {
2173                 sta->no_p2p_set = 1;
2174                 hapd->num_sta_no_p2p++;
2175                 if (hapd->num_sta_no_p2p == 1)
2176                         hostapd_p2p_non_p2p_sta_connected(hapd);
2177         }
2178 #endif /* CONFIG_P2P */
2179
2180         /* Start accounting here, if IEEE 802.1X and WPA are not used.
2181          * IEEE 802.1X/WPA code will start accounting after the station has
2182          * been authorized. */
2183         if (!hapd->conf->ieee802_1x && !hapd->conf->wpa && !hapd->conf->osen) {
2184                 ap_sta_set_authorized(hapd, sta, 1);
2185                 os_get_reltime(&sta->connected_time);
2186                 accounting_sta_start(hapd, sta);
2187         }
2188
2189         /* Start IEEE 802.1X authentication process for new stations */
2190         ieee802_1x_new_station(hapd, sta);
2191         if (reassoc) {
2192                 if (sta->auth_alg != WLAN_AUTH_FT &&
2193                     !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)))
2194                         wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH);
2195         } else
2196                 wpa_auth_sta_associated(hapd->wpa_auth, sta->wpa_sm);
2197
2198         if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)) {
2199                 wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout "
2200                            "for " MACSTR " (%d seconds - ap_max_inactivity)",
2201                            __func__, MAC2STR(sta->addr),
2202                            hapd->conf->ap_max_inactivity);
2203                 eloop_cancel_timeout(ap_handle_timer, hapd, sta);
2204                 eloop_register_timeout(hapd->conf->ap_max_inactivity, 0,
2205                                        ap_handle_timer, hapd, sta);
2206         }
2207 }
2208
2209
2210 const char * hostapd_state_text(enum hostapd_iface_state s)
2211 {
2212         switch (s) {
2213         case HAPD_IFACE_UNINITIALIZED:
2214                 return "UNINITIALIZED";
2215         case HAPD_IFACE_DISABLED:
2216                 return "DISABLED";
2217         case HAPD_IFACE_COUNTRY_UPDATE:
2218                 return "COUNTRY_UPDATE";
2219         case HAPD_IFACE_ACS:
2220                 return "ACS";
2221         case HAPD_IFACE_HT_SCAN:
2222                 return "HT_SCAN";
2223         case HAPD_IFACE_DFS:
2224                 return "DFS";
2225         case HAPD_IFACE_ENABLED:
2226                 return "ENABLED";
2227         }
2228
2229         return "UNKNOWN";
2230 }
2231
2232
2233 void hostapd_set_state(struct hostapd_iface *iface, enum hostapd_iface_state s)
2234 {
2235         wpa_printf(MSG_INFO, "%s: interface state %s->%s",
2236                    iface->conf->bss[0]->iface, hostapd_state_text(iface->state),
2237                    hostapd_state_text(s));
2238         iface->state = s;
2239 }
2240
2241
2242 #ifdef NEED_AP_MLME
2243
2244 static void free_beacon_data(struct beacon_data *beacon)
2245 {
2246         os_free(beacon->head);
2247         beacon->head = NULL;
2248         os_free(beacon->tail);
2249         beacon->tail = NULL;
2250         os_free(beacon->probe_resp);
2251         beacon->probe_resp = NULL;
2252         os_free(beacon->beacon_ies);
2253         beacon->beacon_ies = NULL;
2254         os_free(beacon->proberesp_ies);
2255         beacon->proberesp_ies = NULL;
2256         os_free(beacon->assocresp_ies);
2257         beacon->assocresp_ies = NULL;
2258 }
2259
2260
2261 static int hostapd_build_beacon_data(struct hostapd_data *hapd,
2262                                      struct beacon_data *beacon)
2263 {
2264         struct wpabuf *beacon_extra, *proberesp_extra, *assocresp_extra;
2265         struct wpa_driver_ap_params params;
2266         int ret;
2267
2268         os_memset(beacon, 0, sizeof(*beacon));
2269         ret = ieee802_11_build_ap_params(hapd, &params);
2270         if (ret < 0)
2271                 return ret;
2272
2273         ret = hostapd_build_ap_extra_ies(hapd, &beacon_extra,
2274                                          &proberesp_extra,
2275                                          &assocresp_extra);
2276         if (ret)
2277                 goto free_ap_params;
2278
2279         ret = -1;
2280         beacon->head = os_malloc(params.head_len);
2281         if (!beacon->head)
2282                 goto free_ap_extra_ies;
2283
2284         os_memcpy(beacon->head, params.head, params.head_len);
2285         beacon->head_len = params.head_len;
2286
2287         beacon->tail = os_malloc(params.tail_len);
2288         if (!beacon->tail)
2289                 goto free_beacon;
2290
2291         os_memcpy(beacon->tail, params.tail, params.tail_len);
2292         beacon->tail_len = params.tail_len;
2293
2294         if (params.proberesp != NULL) {
2295                 beacon->probe_resp = os_malloc(params.proberesp_len);
2296                 if (!beacon->probe_resp)
2297                         goto free_beacon;
2298
2299                 os_memcpy(beacon->probe_resp, params.proberesp,
2300                           params.proberesp_len);
2301                 beacon->probe_resp_len = params.proberesp_len;
2302         }
2303
2304         /* copy the extra ies */
2305         if (beacon_extra) {
2306                 beacon->beacon_ies = os_malloc(wpabuf_len(beacon_extra));
2307                 if (!beacon->beacon_ies)
2308                         goto free_beacon;
2309
2310                 os_memcpy(beacon->beacon_ies,
2311                           beacon_extra->buf, wpabuf_len(beacon_extra));
2312                 beacon->beacon_ies_len = wpabuf_len(beacon_extra);
2313         }
2314
2315         if (proberesp_extra) {
2316                 beacon->proberesp_ies =
2317                         os_malloc(wpabuf_len(proberesp_extra));
2318                 if (!beacon->proberesp_ies)
2319                         goto free_beacon;
2320
2321                 os_memcpy(beacon->proberesp_ies, proberesp_extra->buf,
2322                           wpabuf_len(proberesp_extra));
2323                 beacon->proberesp_ies_len = wpabuf_len(proberesp_extra);
2324         }
2325
2326         if (assocresp_extra) {
2327                 beacon->assocresp_ies =
2328                         os_malloc(wpabuf_len(assocresp_extra));
2329                 if (!beacon->assocresp_ies)
2330                         goto free_beacon;
2331
2332                 os_memcpy(beacon->assocresp_ies, assocresp_extra->buf,
2333                           wpabuf_len(assocresp_extra));
2334                 beacon->assocresp_ies_len = wpabuf_len(assocresp_extra);
2335         }
2336
2337         ret = 0;
2338 free_beacon:
2339         /* if the function fails, the caller should not free beacon data */
2340         if (ret)
2341                 free_beacon_data(beacon);
2342
2343 free_ap_extra_ies:
2344         hostapd_free_ap_extra_ies(hapd, beacon_extra, proberesp_extra,
2345                                   assocresp_extra);
2346 free_ap_params:
2347         ieee802_11_free_ap_params(&params);
2348         return ret;
2349 }
2350
2351
2352 /*
2353  * TODO: This flow currently supports only changing frequency within the
2354  * same hw_mode. Any other changes to MAC parameters or provided settings (even
2355  * width) are not supported.
2356  */
2357 static int hostapd_change_config_freq(struct hostapd_data *hapd,
2358                                       struct hostapd_config *conf,
2359                                       struct hostapd_freq_params *params,
2360                                       struct hostapd_freq_params *old_params)
2361 {
2362         int channel;
2363
2364         if (!params->channel) {
2365                 /* check if the new channel is supported by hw */
2366                 params->channel = hostapd_hw_get_channel(hapd, params->freq);
2367         }
2368
2369         channel = params->channel;
2370         if (!channel)
2371                 return -1;
2372
2373         /* if a pointer to old_params is provided we save previous state */
2374         if (old_params) {
2375                 old_params->channel = conf->channel;
2376                 old_params->ht_enabled = conf->ieee80211n;
2377                 old_params->sec_channel_offset = conf->secondary_channel;
2378         }
2379
2380         conf->channel = channel;
2381         conf->ieee80211n = params->ht_enabled;
2382         conf->secondary_channel = params->sec_channel_offset;
2383
2384         /* TODO: maybe call here hostapd_config_check here? */
2385
2386         return 0;
2387 }
2388
2389
2390 static int hostapd_fill_csa_settings(struct hostapd_data *hapd,
2391                                      struct csa_settings *settings)
2392 {
2393         struct hostapd_iface *iface = hapd->iface;
2394         struct hostapd_freq_params old_freq;
2395         int ret;
2396
2397         os_memset(&old_freq, 0, sizeof(old_freq));
2398         if (!iface || !iface->freq || hapd->csa_in_progress)
2399                 return -1;
2400
2401         ret = hostapd_change_config_freq(iface->bss[0], iface->conf,
2402                                          &settings->freq_params,
2403                                          &old_freq);
2404         if (ret)
2405                 return ret;
2406
2407         ret = hostapd_build_beacon_data(hapd, &settings->beacon_after);
2408
2409         /* change back the configuration */
2410         hostapd_change_config_freq(iface->bss[0], iface->conf,
2411                                    &old_freq, NULL);
2412
2413         if (ret)
2414                 return ret;
2415
2416         /* set channel switch parameters for csa ie */
2417         hapd->cs_freq_params = settings->freq_params;
2418         hapd->cs_count = settings->cs_count;
2419         hapd->cs_block_tx = settings->block_tx;
2420
2421         ret = hostapd_build_beacon_data(hapd, &settings->beacon_csa);
2422         if (ret) {
2423                 free_beacon_data(&settings->beacon_after);
2424                 return ret;
2425         }
2426
2427         settings->counter_offset_beacon = hapd->cs_c_off_beacon;
2428         settings->counter_offset_presp = hapd->cs_c_off_proberesp;
2429
2430         return 0;
2431 }
2432
2433
2434 void hostapd_cleanup_cs_params(struct hostapd_data *hapd)
2435 {
2436         os_memset(&hapd->cs_freq_params, 0, sizeof(hapd->cs_freq_params));
2437         hapd->cs_count = 0;
2438         hapd->cs_block_tx = 0;
2439         hapd->cs_c_off_beacon = 0;
2440         hapd->cs_c_off_proberesp = 0;
2441         hapd->csa_in_progress = 0;
2442 }
2443
2444
2445 int hostapd_switch_channel(struct hostapd_data *hapd,
2446                            struct csa_settings *settings)
2447 {
2448         int ret;
2449
2450         if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
2451                 wpa_printf(MSG_INFO, "CSA is not supported");
2452                 return -1;
2453         }
2454
2455         ret = hostapd_fill_csa_settings(hapd, settings);
2456         if (ret)
2457                 return ret;
2458
2459         ret = hostapd_drv_switch_channel(hapd, settings);
2460         free_beacon_data(&settings->beacon_csa);
2461         free_beacon_data(&settings->beacon_after);
2462
2463         if (ret) {
2464                 /* if we failed, clean cs parameters */
2465                 hostapd_cleanup_cs_params(hapd);
2466                 return ret;
2467         }
2468
2469         hapd->csa_in_progress = 1;
2470         return 0;
2471 }
2472
2473
2474 void
2475 hostapd_switch_channel_fallback(struct hostapd_iface *iface,
2476                                 const struct hostapd_freq_params *freq_params)
2477 {
2478         int vht_seg0_idx = 0, vht_seg1_idx = 0, vht_bw = VHT_CHANWIDTH_USE_HT;
2479         unsigned int i;
2480
2481         wpa_printf(MSG_DEBUG, "Restarting all CSA-related BSSes");
2482
2483         if (freq_params->center_freq1)
2484                 vht_seg0_idx = 36 + (freq_params->center_freq1 - 5180) / 5;
2485         if (freq_params->center_freq2)
2486                 vht_seg1_idx = 36 + (freq_params->center_freq2 - 5180) / 5;
2487
2488         switch (freq_params->bandwidth) {
2489         case 0:
2490         case 20:
2491         case 40:
2492                 vht_bw = VHT_CHANWIDTH_USE_HT;
2493                 break;
2494         case 80:
2495                 if (freq_params->center_freq2)
2496                         vht_bw = VHT_CHANWIDTH_80P80MHZ;
2497                 else
2498                         vht_bw = VHT_CHANWIDTH_80MHZ;
2499                 break;
2500         case 160:
2501                 vht_bw = VHT_CHANWIDTH_160MHZ;
2502                 break;
2503         default:
2504                 wpa_printf(MSG_WARNING, "Unknown CSA bandwidth: %d",
2505                            freq_params->bandwidth);
2506                 break;
2507         }
2508
2509         iface->freq = freq_params->freq;
2510         iface->conf->channel = freq_params->channel;
2511         iface->conf->secondary_channel = freq_params->sec_channel_offset;
2512         iface->conf->vht_oper_centr_freq_seg0_idx = vht_seg0_idx;
2513         iface->conf->vht_oper_centr_freq_seg1_idx = vht_seg1_idx;
2514         iface->conf->vht_oper_chwidth = vht_bw;
2515         iface->conf->ieee80211n = freq_params->ht_enabled;
2516         iface->conf->ieee80211ac = freq_params->vht_enabled;
2517
2518         /*
2519          * cs_params must not be cleared earlier because the freq_params
2520          * argument may actually point to one of these.
2521          */
2522         for (i = 0; i < iface->num_bss; i++)
2523                 hostapd_cleanup_cs_params(iface->bss[i]);
2524
2525         hostapd_disable_iface(iface);
2526         hostapd_enable_iface(iface);
2527 }
2528
2529 #endif /* NEED_AP_MLME */