src/ap/hostapd.c

   1 /*
   2  * hostapd / Initialization and configuration
   3  * Copyright (c) 2002-2014, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "utils/includes.h"
  10
  11 #include "utils/common.h"
  12 #include "utils/eloop.h"
  13 #include "common/ieee802_11_defs.h"
  14 #include "common/wpa_ctrl.h"
  15 #include "common/hw_features_common.h"
  16 #include "radius/radius_client.h"
  17 #include "radius/radius_das.h"
  18 #include "eap_server/tncs.h"
  19 #include "eapol_auth/eapol_auth_sm.h"
  20 #include "eapol_auth/eapol_auth_sm_i.h"
  21 #include "fst/fst.h"
  22 #include "hostapd.h"
  23 #include "authsrv.h"
  24 #include "sta_info.h"
  25 #include "accounting.h"
  26 #include "ap_list.h"
  27 #include "beacon.h"
  28 #include "iapp.h"
  29 #include "ieee802_1x.h"
  30 #include "ieee802_11_auth.h"
  31 #include "vlan_init.h"
  32 #include "wpa_auth.h"
  33 #include "wps_hostapd.h"
  34 #include "hw_features.h"
  35 #include "wpa_auth_glue.h"
  36 #include "ap_drv_ops.h"
  37 #include "ap_config.h"
  38 #include "p2p_hostapd.h"
  39 #include "gas_serv.h"
  40 #include "dfs.h"
  41 #include "ieee802_11.h"
  42 #include "bss_load.h"
  43 #include "x_snoop.h"
  44 #include "dhcp_snoop.h"
  45 #include "ndisc_snoop.h"
  46
  47
  48 static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason);
  49 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd);
  50 static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd);
  51 static int setup_interface2(struct hostapd_iface *iface);
  52 static void channel_list_update_timeout(void *eloop_ctx, void *timeout_ctx);
  53
  54
  55 int hostapd_for_each_interface(struct hapd_interfaces *interfaces,
  56                                int (*cb)(struct hostapd_iface *iface,
  57                                          void *ctx), void *ctx)
  58 {
  59         size_t i;
  60         int ret;
  61
  62         for (i = 0; i < interfaces->count; i++) {
  63                 ret = cb(interfaces->iface[i], ctx);
  64                 if (ret)
  65                         return ret;
  66         }
  67
  68         return 0;
  69 }
  70
  71
  72 static void hostapd_reload_bss(struct hostapd_data *hapd)
  73 {
  74         struct hostapd_ssid *ssid;
  75
  76 #ifndef CONFIG_NO_RADIUS
  77         radius_client_reconfig(hapd->radius, hapd->conf->radius);
  78 #endif /* CONFIG_NO_RADIUS */
  79
  80         ssid = &hapd->conf->ssid;
  81         if (!ssid->wpa_psk_set && ssid->wpa_psk && !ssid->wpa_psk->next &&
  82             ssid->wpa_passphrase_set && ssid->wpa_passphrase) {
  83                 /*
  84                  * Force PSK to be derived again since SSID or passphrase may
  85                  * have changed.
  86                  */
  87                 hostapd_config_clear_wpa_psk(&hapd->conf->ssid.wpa_psk);
  88         }
  89         if (hostapd_setup_wpa_psk(hapd->conf)) {
  90                 wpa_printf(MSG_ERROR, "Failed to re-configure WPA PSK "
  91                            "after reloading configuration");
  92         }
  93
  94         if (hapd->conf->ieee802_1x || hapd->conf->wpa)
  95                 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 1);
  96         else
  97                 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 0);
  98
  99         if ((hapd->conf->wpa || hapd->conf->osen) && hapd->wpa_auth == NULL) {
 100                 hostapd_setup_wpa(hapd);
 101                 if (hapd->wpa_auth)
 102                         wpa_init_keys(hapd->wpa_auth);
 103         } else if (hapd->conf->wpa) {
 104                 const u8 *wpa_ie;
 105                 size_t wpa_ie_len;
 106                 hostapd_reconfig_wpa(hapd);
 107                 wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len);
 108                 if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len))
 109                         wpa_printf(MSG_ERROR, "Failed to configure WPA IE for "
 110                                    "the kernel driver.");
 111         } else if (hapd->wpa_auth) {
 112                 wpa_deinit(hapd->wpa_auth);
 113                 hapd->wpa_auth = NULL;
 114                 hostapd_set_privacy(hapd, 0);
 115                 hostapd_setup_encryption(hapd->conf->iface, hapd);
 116                 hostapd_set_generic_elem(hapd, (u8 *) "", 0);
 117         }
 118
 119         ieee802_11_set_beacon(hapd);
 120         hostapd_update_wps(hapd);
 121
 122         if (hapd->conf->ssid.ssid_set &&
 123             hostapd_set_ssid(hapd, hapd->conf->ssid.ssid,
 124                              hapd->conf->ssid.ssid_len)) {
 125                 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
 126                 /* try to continue */
 127         }
 128         wpa_printf(MSG_DEBUG, "Reconfigured interface %s", hapd->conf->iface);
 129 }
 130
 131
 132 static void hostapd_clear_old(struct hostapd_iface *iface)
 133 {
 134         size_t j;
 135
 136         /*
 137          * Deauthenticate all stations since the new configuration may not
 138          * allow them to use the BSS anymore.
 139          */
 140         for (j = 0; j < iface->num_bss; j++) {
 141                 hostapd_flush_old_stations(iface->bss[j],
 142                                            WLAN_REASON_PREV_AUTH_NOT_VALID);
 143                 hostapd_broadcast_wep_clear(iface->bss[j]);
 144
 145 #ifndef CONFIG_NO_RADIUS
 146                 /* TODO: update dynamic data based on changed configuration
 147                  * items (e.g., open/close sockets, etc.) */
 148                 radius_client_flush(iface->bss[j]->radius, 0);
 149 #endif /* CONFIG_NO_RADIUS */
 150         }
 151 }
 152
 153
 154 int hostapd_reload_config(struct hostapd_iface *iface)
 155 {
 156         struct hostapd_data *hapd = iface->bss[0];
 157         struct hostapd_config *newconf, *oldconf;
 158         size_t j;
 159
 160         if (iface->config_fname == NULL) {
 161                 /* Only in-memory config in use - assume it has been updated */
 162                 hostapd_clear_old(iface);
 163                 for (j = 0; j < iface->num_bss; j++)
 164                         hostapd_reload_bss(iface->bss[j]);
 165                 return 0;
 166         }
 167
 168         if (iface->interfaces == NULL ||
 169             iface->interfaces->config_read_cb == NULL)
 170                 return -1;
 171         newconf = iface->interfaces->config_read_cb(iface->config_fname);
 172         if (newconf == NULL)
 173                 return -1;
 174
 175         hostapd_clear_old(iface);
 176
 177         oldconf = hapd->iconf;
 178         iface->conf = newconf;
 179
 180         for (j = 0; j < iface->num_bss; j++) {
 181                 hapd = iface->bss[j];
 182                 hapd->iconf = newconf;
 183                 hapd->iconf->channel = oldconf->channel;
 184                 hapd->iconf->acs = oldconf->acs;
 185                 hapd->iconf->secondary_channel = oldconf->secondary_channel;
 186                 hapd->iconf->ieee80211n = oldconf->ieee80211n;
 187                 hapd->iconf->ieee80211ac = oldconf->ieee80211ac;
 188                 hapd->iconf->ht_capab = oldconf->ht_capab;
 189                 hapd->iconf->vht_capab = oldconf->vht_capab;
 190                 hapd->iconf->vht_oper_chwidth = oldconf->vht_oper_chwidth;
 191                 hapd->iconf->vht_oper_centr_freq_seg0_idx =
 192                         oldconf->vht_oper_centr_freq_seg0_idx;
 193                 hapd->iconf->vht_oper_centr_freq_seg1_idx =
 194                         oldconf->vht_oper_centr_freq_seg1_idx;
 195                 hapd->conf = newconf->bss[j];
 196                 hostapd_reload_bss(hapd);
 197         }
 198
 199         hostapd_config_free(oldconf);
 200
 201
 202         return 0;
 203 }
 204
 205
 206 static void hostapd_broadcast_key_clear_iface(struct hostapd_data *hapd,
 207                                               char *ifname)
 208 {
 209         int i;
 210
 211         for (i = 0; i < NUM_WEP_KEYS; i++) {
 212                 if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE, NULL, i,
 213                                         0, NULL, 0, NULL, 0)) {
 214                         wpa_printf(MSG_DEBUG, "Failed to clear default "
 215                                    "encryption keys (ifname=%s keyidx=%d)",
 216                                    ifname, i);
 217                 }
 218         }
 219 #ifdef CONFIG_IEEE80211W
 220         if (hapd->conf->ieee80211w) {
 221                 for (i = NUM_WEP_KEYS; i < NUM_WEP_KEYS + 2; i++) {
 222                         if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE,
 223                                                 NULL, i, 0, NULL,
 224                                                 0, NULL, 0)) {
 225                                 wpa_printf(MSG_DEBUG, "Failed to clear "
 226                                            "default mgmt encryption keys "
 227                                            "(ifname=%s keyidx=%d)", ifname, i);
 228                         }
 229                 }
 230         }
 231 #endif /* CONFIG_IEEE80211W */
 232 }
 233
 234
 235 static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd)
 236 {
 237         hostapd_broadcast_key_clear_iface(hapd, hapd->conf->iface);
 238         return 0;
 239 }
 240
 241
 242 static int hostapd_broadcast_wep_set(struct hostapd_data *hapd)
 243 {
 244         int errors = 0, idx;
 245         struct hostapd_ssid *ssid = &hapd->conf->ssid;
 246
 247         idx = ssid->wep.idx;
 248         if (ssid->wep.default_len &&
 249             hostapd_drv_set_key(hapd->conf->iface,
 250                                 hapd, WPA_ALG_WEP, broadcast_ether_addr, idx,
 251                                 1, NULL, 0, ssid->wep.key[idx],
 252                                 ssid->wep.len[idx])) {
 253                 wpa_printf(MSG_WARNING, "Could not set WEP encryption.");
 254                 errors++;
 255         }
 256
 257         return errors;
 258 }
 259
 260
 261 static void hostapd_free_hapd_data(struct hostapd_data *hapd)
 262 {
 263         os_free(hapd->probereq_cb);
 264         hapd->probereq_cb = NULL;
 265         hapd->num_probereq_cb = 0;
 266
 267 #ifdef CONFIG_P2P
 268         wpabuf_free(hapd->p2p_beacon_ie);
 269         hapd->p2p_beacon_ie = NULL;
 270         wpabuf_free(hapd->p2p_probe_resp_ie);
 271         hapd->p2p_probe_resp_ie = NULL;
 272 #endif /* CONFIG_P2P */
 273
 274         if (!hapd->started) {
 275                 wpa_printf(MSG_ERROR, "%s: Interface %s wasn't started",
 276                            __func__, hapd->conf->iface);
 277                 return;
 278         }
 279         hapd->started = 0;
 280
 281         wpa_printf(MSG_DEBUG, "%s(%s)", __func__, hapd->conf->iface);
 282         iapp_deinit(hapd->iapp);
 283         hapd->iapp = NULL;
 284         accounting_deinit(hapd);
 285         hostapd_deinit_wpa(hapd);
 286         vlan_deinit(hapd);
 287         hostapd_acl_deinit(hapd);
 288 #ifndef CONFIG_NO_RADIUS
 289         radius_client_deinit(hapd->radius);
 290         hapd->radius = NULL;
 291         radius_das_deinit(hapd->radius_das);
 292         hapd->radius_das = NULL;
 293 #endif /* CONFIG_NO_RADIUS */
 294
 295         hostapd_deinit_wps(hapd);
 296
 297         authsrv_deinit(hapd);
 298
 299         if (hapd->interface_added) {
 300                 hapd->interface_added = 0;
 301                 if (hostapd_if_remove(hapd, WPA_IF_AP_BSS, hapd->conf->iface)) {
 302                         wpa_printf(MSG_WARNING,
 303                                    "Failed to remove BSS interface %s",
 304                                    hapd->conf->iface);
 305                         hapd->interface_added = 1;
 306                 } else {
 307                         /*
 308                          * Since this was a dynamically added interface, the
 309                          * driver wrapper may have removed its internal instance
 310                          * and hapd->drv_priv is not valid anymore.
 311                          */
 312                         hapd->drv_priv = NULL;
 313                 }
 314         }
 315
 316         wpabuf_free(hapd->time_adv);
 317
 318 #ifdef CONFIG_INTERWORKING
 319         gas_serv_deinit(hapd);
 320 #endif /* CONFIG_INTERWORKING */
 321
 322         bss_load_update_deinit(hapd);
 323         ndisc_snoop_deinit(hapd);
 324         dhcp_snoop_deinit(hapd);
 325         x_snoop_deinit(hapd);
 326
 327 #ifdef CONFIG_SQLITE
 328         bin_clear_free(hapd->tmp_eap_user.identity,
 329                        hapd->tmp_eap_user.identity_len);
 330         bin_clear_free(hapd->tmp_eap_user.password,
 331                        hapd->tmp_eap_user.password_len);
 332 #endif /* CONFIG_SQLITE */
 333
 334 #ifdef CONFIG_MESH
 335         wpabuf_free(hapd->mesh_pending_auth);
 336         hapd->mesh_pending_auth = NULL;
 337 #endif /* CONFIG_MESH */
 338 }
 339
 340
 341 /**
 342  * hostapd_cleanup - Per-BSS cleanup (deinitialization)
 343  * @hapd: Pointer to BSS data
 344  *
 345  * This function is used to free all per-BSS data structures and resources.
 346  * Most of the modules that are initialized in hostapd_setup_bss() are
 347  * deinitialized here.
 348  */
 349 static void hostapd_cleanup(struct hostapd_data *hapd)
 350 {
 351         wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s))", __func__, hapd,
 352                    hapd->conf->iface);
 353         if (hapd->iface->interfaces &&
 354             hapd->iface->interfaces->ctrl_iface_deinit)
 355                 hapd->iface->interfaces->ctrl_iface_deinit(hapd);
 356         hostapd_free_hapd_data(hapd);
 357 }
 358
 359
 360 static void sta_track_deinit(struct hostapd_iface *iface)
 361 {
 362         struct hostapd_sta_info *info;
 363
 364         if (!iface->num_sta_seen)
 365                 return;
 366
 367         while ((info = dl_list_first(&iface->sta_seen, struct hostapd_sta_info,
 368                                      list))) {
 369                 dl_list_del(&info->list);
 370                 iface->num_sta_seen--;
 371                 os_free(info);
 372         }
 373 }
 374
 375
 376 static void hostapd_cleanup_iface_partial(struct hostapd_iface *iface)
 377 {
 378         wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
 379 #ifdef CONFIG_IEEE80211N
 380 #ifdef NEED_AP_MLME
 381         hostapd_stop_setup_timers(iface);
 382 #endif /* NEED_AP_MLME */
 383 #endif /* CONFIG_IEEE80211N */
 384         hostapd_free_hw_features(iface->hw_features, iface->num_hw_features);
 385         iface->hw_features = NULL;
 386         os_free(iface->current_rates);
 387         iface->current_rates = NULL;
 388         os_free(iface->basic_rates);
 389         iface->basic_rates = NULL;
 390         ap_list_deinit(iface);
 391         sta_track_deinit(iface);
 392 }
 393
 394
 395 /**
 396  * hostapd_cleanup_iface - Complete per-interface cleanup
 397  * @iface: Pointer to interface data
 398  *
 399  * This function is called after per-BSS data structures are deinitialized
 400  * with hostapd_cleanup().
 401  */
 402 static void hostapd_cleanup_iface(struct hostapd_iface *iface)
 403 {
 404         wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
 405         eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
 406
 407         hostapd_cleanup_iface_partial(iface);
 408         hostapd_config_free(iface->conf);
 409         iface->conf = NULL;
 410
 411         os_free(iface->config_fname);
 412         os_free(iface->bss);
 413         wpa_printf(MSG_DEBUG, "%s: free iface=%p", __func__, iface);
 414         os_free(iface);
 415 }
 416
 417
 418 static void hostapd_clear_wep(struct hostapd_data *hapd)
 419 {
 420         if (hapd->drv_priv && !hapd->iface->driver_ap_teardown) {
 421                 hostapd_set_privacy(hapd, 0);
 422                 hostapd_broadcast_wep_clear(hapd);
 423         }
 424 }
 425
 426
 427 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd)
 428 {
 429         int i;
 430
 431         hostapd_broadcast_wep_set(hapd);
 432
 433         if (hapd->conf->ssid.wep.default_len) {
 434                 hostapd_set_privacy(hapd, 1);
 435                 return 0;
 436         }
 437
 438         /*
 439          * When IEEE 802.1X is not enabled, the driver may need to know how to
 440          * set authentication algorithms for static WEP.
 441          */
 442         hostapd_drv_set_authmode(hapd, hapd->conf->auth_algs);
 443
 444         for (i = 0; i < 4; i++) {
 445                 if (hapd->conf->ssid.wep.key[i] &&
 446                     hostapd_drv_set_key(iface, hapd, WPA_ALG_WEP, NULL, i,
 447                                         i == hapd->conf->ssid.wep.idx, NULL, 0,
 448                                         hapd->conf->ssid.wep.key[i],
 449                                         hapd->conf->ssid.wep.len[i])) {
 450                         wpa_printf(MSG_WARNING, "Could not set WEP "
 451                                    "encryption.");
 452                         return -1;
 453                 }
 454                 if (hapd->conf->ssid.wep.key[i] &&
 455                     i == hapd->conf->ssid.wep.idx)
 456                         hostapd_set_privacy(hapd, 1);
 457         }
 458
 459         return 0;
 460 }
 461
 462
 463 static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason)
 464 {
 465         int ret = 0;
 466         u8 addr[ETH_ALEN];
 467
 468         if (hostapd_drv_none(hapd) || hapd->drv_priv == NULL)
 469                 return 0;
 470
 471         if (!hapd->iface->driver_ap_teardown) {
 472                 wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
 473                         "Flushing old station entries");
 474
 475                 if (hostapd_flush(hapd)) {
 476                         wpa_msg(hapd->msg_ctx, MSG_WARNING,
 477                                 "Could not connect to kernel driver");
 478                         ret = -1;
 479                 }
 480         }
 481         wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "Deauthenticate all stations");
 482         os_memset(addr, 0xff, ETH_ALEN);
 483         hostapd_drv_sta_deauth(hapd, addr, reason);
 484         hostapd_free_stas(hapd);
 485
 486         return ret;
 487 }
 488
 489
 490 static void hostapd_bss_deinit_no_free(struct hostapd_data *hapd)
 491 {
 492         hostapd_free_stas(hapd);
 493         hostapd_flush_old_stations(hapd, WLAN_REASON_DEAUTH_LEAVING);
 494         hostapd_clear_wep(hapd);
 495 }
 496
 497
 498 /**
 499  * hostapd_validate_bssid_configuration - Validate BSSID configuration
 500  * @iface: Pointer to interface data
 501  * Returns: 0 on success, -1 on failure
 502  *
 503  * This function is used to validate that the configured BSSIDs are valid.
 504  */
 505 static int hostapd_validate_bssid_configuration(struct hostapd_iface *iface)
 506 {
 507         u8 mask[ETH_ALEN] = { 0 };
 508         struct hostapd_data *hapd = iface->bss[0];
 509         unsigned int i = iface->conf->num_bss, bits = 0, j;
 510         int auto_addr = 0;
 511
 512         if (hostapd_drv_none(hapd))
 513                 return 0;
 514
 515         /* Generate BSSID mask that is large enough to cover the BSSIDs. */
 516
 517         /* Determine the bits necessary to cover the number of BSSIDs. */
 518         for (i--; i; i >>= 1)
 519                 bits++;
 520
 521         /* Determine the bits necessary to any configured BSSIDs,
 522            if they are higher than the number of BSSIDs. */
 523         for (j = 0; j < iface->conf->num_bss; j++) {
 524                 if (hostapd_mac_comp_empty(iface->conf->bss[j]->bssid) == 0) {
 525                         if (j)
 526                                 auto_addr++;
 527                         continue;
 528                 }
 529
 530                 for (i = 0; i < ETH_ALEN; i++) {
 531                         mask[i] |=
 532                                 iface->conf->bss[j]->bssid[i] ^
 533                                 hapd->own_addr[i];
 534                 }
 535         }
 536
 537         if (!auto_addr)
 538                 goto skip_mask_ext;
 539
 540         for (i = 0; i < ETH_ALEN && mask[i] == 0; i++)
 541                 ;
 542         j = 0;
 543         if (i < ETH_ALEN) {
 544                 j = (5 - i) * 8;
 545
 546                 while (mask[i] != 0) {
 547                         mask[i] >>= 1;
 548                         j++;
 549                 }
 550         }
 551
 552         if (bits < j)
 553                 bits = j;
 554
 555         if (bits > 40) {
 556                 wpa_printf(MSG_ERROR, "Too many bits in the BSSID mask (%u)",
 557                            bits);
 558                 return -1;
 559         }
 560
 561         os_memset(mask, 0xff, ETH_ALEN);
 562         j = bits / 8;
 563         for (i = 5; i > 5 - j; i--)
 564                 mask[i] = 0;
 565         j = bits % 8;
 566         while (j--)
 567                 mask[i] <<= 1;
 568
 569 skip_mask_ext:
 570         wpa_printf(MSG_DEBUG, "BSS count %lu, BSSID mask " MACSTR " (%d bits)",
 571                    (unsigned long) iface->conf->num_bss, MAC2STR(mask), bits);
 572
 573         if (!auto_addr)
 574                 return 0;
 575
 576         for (i = 0; i < ETH_ALEN; i++) {
 577                 if ((hapd->own_addr[i] & mask[i]) != hapd->own_addr[i]) {
 578                         wpa_printf(MSG_ERROR, "Invalid BSSID mask " MACSTR
 579                                    " for start address " MACSTR ".",
 580                                    MAC2STR(mask), MAC2STR(hapd->own_addr));
 581                         wpa_printf(MSG_ERROR, "Start address must be the "
 582                                    "first address in the block (i.e., addr "
 583                                    "AND mask == addr).");
 584                         return -1;
 585                 }
 586         }
 587
 588         return 0;
 589 }
 590
 591
 592 static int mac_in_conf(struct hostapd_config *conf, const void *a)
 593 {
 594         size_t i;
 595
 596         for (i = 0; i < conf->num_bss; i++) {
 597                 if (hostapd_mac_comp(conf->bss[i]->bssid, a) == 0) {
 598                         return 1;
 599                 }
 600         }
 601
 602         return 0;
 603 }
 604
 605
 606 #ifndef CONFIG_NO_RADIUS
 607
 608 static int hostapd_das_nas_mismatch(struct hostapd_data *hapd,
 609                                     struct radius_das_attrs *attr)
 610 {
 611         if (attr->nas_identifier &&
 612             (!hapd->conf->nas_identifier ||
 613              os_strlen(hapd->conf->nas_identifier) !=
 614              attr->nas_identifier_len ||
 615              os_memcmp(hapd->conf->nas_identifier, attr->nas_identifier,
 616                        attr->nas_identifier_len) != 0)) {
 617                 wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-Identifier mismatch");
 618                 return 1;
 619         }
 620
 621         if (attr->nas_ip_addr &&
 622             (hapd->conf->own_ip_addr.af != AF_INET ||
 623              os_memcmp(&hapd->conf->own_ip_addr.u.v4, attr->nas_ip_addr, 4) !=
 624              0)) {
 625                 wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-IP-Address mismatch");
 626                 return 1;
 627         }
 628
 629 #ifdef CONFIG_IPV6
 630         if (attr->nas_ipv6_addr &&
 631             (hapd->conf->own_ip_addr.af != AF_INET6 ||
 632              os_memcmp(&hapd->conf->own_ip_addr.u.v6, attr->nas_ipv6_addr, 16)
 633              != 0)) {
 634                 wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-IPv6-Address mismatch");
 635                 return 1;
 636         }
 637 #endif /* CONFIG_IPV6 */
 638
 639         return 0;
 640 }
 641
 642
 643 static struct sta_info * hostapd_das_find_sta(struct hostapd_data *hapd,
 644                                               struct radius_das_attrs *attr,
 645                                               int *multi)
 646 {
 647         struct sta_info *selected, *sta;
 648         char buf[128];
 649         int num_attr = 0;
 650         int count;
 651
 652         *multi = 0;
 653
 654         for (sta = hapd->sta_list; sta; sta = sta->next)
 655                 sta->radius_das_match = 1;
 656
 657         if (attr->sta_addr) {
 658                 num_attr++;
 659                 sta = ap_get_sta(hapd, attr->sta_addr);
 660                 if (!sta) {
 661                         wpa_printf(MSG_DEBUG,
 662                                    "RADIUS DAS: No Calling-Station-Id match");
 663                         return NULL;
 664                 }
 665
 666                 selected = sta;
 667                 for (sta = hapd->sta_list; sta; sta = sta->next) {
 668                         if (sta != selected)
 669                                 sta->radius_das_match = 0;
 670                 }
 671                 wpa_printf(MSG_DEBUG, "RADIUS DAS: Calling-Station-Id match");
 672         }
 673
 674         if (attr->acct_session_id) {
 675                 num_attr++;
 676                 if (attr->acct_session_id_len != 17) {
 677                         wpa_printf(MSG_DEBUG,
 678                                    "RADIUS DAS: Acct-Session-Id cannot match");
 679                         return NULL;
 680                 }
 681                 count = 0;
 682
 683                 for (sta = hapd->sta_list; sta; sta = sta->next) {
 684                         if (!sta->radius_das_match)
 685                                 continue;
 686                         os_snprintf(buf, sizeof(buf), "%08X-%08X",
 687                                     sta->acct_session_id_hi,
 688                                     sta->acct_session_id_lo);
 689                         if (os_memcmp(attr->acct_session_id, buf, 17) != 0)
 690                                 sta->radius_das_match = 0;
 691                         else
 692                                 count++;
 693                 }
 694
 695                 if (count == 0) {
 696                         wpa_printf(MSG_DEBUG,
 697                                    "RADIUS DAS: No matches remaining after Acct-Session-Id check");
 698                         return NULL;
 699                 }
 700                 wpa_printf(MSG_DEBUG, "RADIUS DAS: Acct-Session-Id match");
 701         }
 702
 703         if (attr->acct_multi_session_id) {
 704                 num_attr++;
 705                 if (attr->acct_multi_session_id_len != 17) {
 706                         wpa_printf(MSG_DEBUG,
 707                                    "RADIUS DAS: Acct-Multi-Session-Id cannot match");
 708                         return NULL;
 709                 }
 710                 count = 0;
 711
 712                 for (sta = hapd->sta_list; sta; sta = sta->next) {
 713                         if (!sta->radius_das_match)
 714                                 continue;
 715                         if (!sta->eapol_sm ||
 716                             !sta->eapol_sm->acct_multi_session_id_hi) {
 717                                 sta->radius_das_match = 0;
 718                                 continue;
 719                         }
 720                         os_snprintf(buf, sizeof(buf), "%08X+%08X",
 721                                     sta->eapol_sm->acct_multi_session_id_hi,
 722                                     sta->eapol_sm->acct_multi_session_id_lo);
 723                         if (os_memcmp(attr->acct_multi_session_id, buf, 17) !=
 724                             0)
 725                                 sta->radius_das_match = 0;
 726                         else
 727                                 count++;
 728                 }
 729
 730                 if (count == 0) {
 731                         wpa_printf(MSG_DEBUG,
 732                                    "RADIUS DAS: No matches remaining after Acct-Multi-Session-Id check");
 733                         return NULL;
 734                 }
 735                 wpa_printf(MSG_DEBUG,
 736                            "RADIUS DAS: Acct-Multi-Session-Id match");
 737         }
 738
 739         if (attr->cui) {
 740                 num_attr++;
 741                 count = 0;
 742
 743                 for (sta = hapd->sta_list; sta; sta = sta->next) {
 744                         struct wpabuf *cui;
 745
 746                         if (!sta->radius_das_match)
 747                                 continue;
 748                         cui = ieee802_1x_get_radius_cui(sta->eapol_sm);
 749                         if (!cui || wpabuf_len(cui) != attr->cui_len ||
 750                             os_memcmp(wpabuf_head(cui), attr->cui,
 751                                       attr->cui_len) != 0)
 752                                 sta->radius_das_match = 0;
 753                         else
 754                                 count++;
 755                 }
 756
 757                 if (count == 0) {
 758                         wpa_printf(MSG_DEBUG,
 759                                    "RADIUS DAS: No matches remaining after Chargeable-User-Identity check");
 760                         return NULL;
 761                 }
 762                 wpa_printf(MSG_DEBUG,
 763                            "RADIUS DAS: Chargeable-User-Identity match");
 764         }
 765
 766         if (attr->user_name) {
 767                 num_attr++;
 768                 count = 0;
 769
 770                 for (sta = hapd->sta_list; sta; sta = sta->next) {
 771                         u8 *identity;
 772                         size_t identity_len;
 773
 774                         if (!sta->radius_das_match)
 775                                 continue;
 776                         identity = ieee802_1x_get_identity(sta->eapol_sm,
 777                                                            &identity_len);
 778                         if (!identity ||
 779                             identity_len != attr->user_name_len ||
 780                             os_memcmp(identity, attr->user_name, identity_len)
 781                             != 0)
 782                                 sta->radius_das_match = 0;
 783                         else
 784                                 count++;
 785                 }
 786
 787                 if (count == 0) {
 788                         wpa_printf(MSG_DEBUG,
 789                                    "RADIUS DAS: No matches remaining after User-Name check");
 790                         return NULL;
 791                 }
 792                 wpa_printf(MSG_DEBUG,
 793                            "RADIUS DAS: User-Name match");
 794         }
 795
 796         if (num_attr == 0) {
 797                 /*
 798                  * In theory, we could match all current associations, but it
 799                  * seems safer to just reject requests that do not include any
 800                  * session identification attributes.
 801                  */
 802                 wpa_printf(MSG_DEBUG,
 803                            "RADIUS DAS: No session identification attributes included");
 804                 return NULL;
 805         }
 806
 807         selected = NULL;
 808         for (sta = hapd->sta_list; sta; sta = sta->next) {
 809                 if (sta->radius_das_match) {
 810                         if (selected) {
 811                                 *multi = 1;
 812                                 return NULL;
 813                         }
 814                         selected = sta;
 815                 }
 816         }
 817
 818         return selected;
 819 }
 820
 821
 822 static int hostapd_das_disconnect_pmksa(struct hostapd_data *hapd,
 823                                         struct radius_das_attrs *attr)
 824 {
 825         if (!hapd->wpa_auth)
 826                 return -1;
 827         return wpa_auth_radius_das_disconnect_pmksa(hapd->wpa_auth, attr);
 828 }
 829
 830
 831 static enum radius_das_res
 832 hostapd_das_disconnect(void *ctx, struct radius_das_attrs *attr)
 833 {
 834         struct hostapd_data *hapd = ctx;
 835         struct sta_info *sta;
 836         int multi;
 837
 838         if (hostapd_das_nas_mismatch(hapd, attr))
 839                 return RADIUS_DAS_NAS_MISMATCH;
 840
 841         sta = hostapd_das_find_sta(hapd, attr, &multi);
 842         if (sta == NULL) {
 843                 if (multi) {
 844                         wpa_printf(MSG_DEBUG,
 845                                    "RADIUS DAS: Multiple sessions match - not supported");
 846                         return RADIUS_DAS_MULTI_SESSION_MATCH;
 847                 }
 848                 if (hostapd_das_disconnect_pmksa(hapd, attr) == 0) {
 849                         wpa_printf(MSG_DEBUG,
 850                                    "RADIUS DAS: PMKSA cache entry matched");
 851                         return RADIUS_DAS_SUCCESS;
 852                 }
 853                 wpa_printf(MSG_DEBUG, "RADIUS DAS: No matching session found");
 854                 return RADIUS_DAS_SESSION_NOT_FOUND;
 855         }
 856
 857         wpa_printf(MSG_DEBUG, "RADIUS DAS: Found a matching session " MACSTR
 858                    " - disconnecting", MAC2STR(sta->addr));
 859         wpa_auth_pmksa_remove(hapd->wpa_auth, sta->addr);
 860
 861         hostapd_drv_sta_deauth(hapd, sta->addr,
 862                                WLAN_REASON_PREV_AUTH_NOT_VALID);
 863         ap_sta_deauthenticate(hapd, sta, WLAN_REASON_PREV_AUTH_NOT_VALID);
 864
 865         return RADIUS_DAS_SUCCESS;
 866 }
 867
 868 #endif /* CONFIG_NO_RADIUS */
 869
 870
 871 /**
 872  * hostapd_setup_bss - Per-BSS setup (initialization)
 873  * @hapd: Pointer to BSS data
 874  * @first: Whether this BSS is the first BSS of an interface; -1 = not first,
 875  *      but interface may exist
 876  *
 877  * This function is used to initialize all per-BSS data structures and
 878  * resources. This gets called in a loop for each BSS when an interface is
 879  * initialized. Most of the modules that are initialized here will be
 880  * deinitialized in hostapd_cleanup().
 881  */
 882 static int hostapd_setup_bss(struct hostapd_data *hapd, int first)
 883 {
 884         struct hostapd_bss_config *conf = hapd->conf;
 885         u8 ssid[SSID_MAX_LEN + 1];
 886         int ssid_len, set_ssid;
 887         char force_ifname[IFNAMSIZ];
 888         u8 if_addr[ETH_ALEN];
 889         int flush_old_stations = 1;
 890
 891         wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s), first=%d)",
 892                    __func__, hapd, conf->iface, first);
 893
 894 #ifdef EAP_SERVER_TNC
 895         if (conf->tnc && tncs_global_init() < 0) {
 896                 wpa_printf(MSG_ERROR, "Failed to initialize TNCS");
 897                 return -1;
 898         }
 899 #endif /* EAP_SERVER_TNC */
 900
 901         if (hapd->started) {
 902                 wpa_printf(MSG_ERROR, "%s: Interface %s was already started",
 903                            __func__, conf->iface);
 904                 return -1;
 905         }
 906         hapd->started = 1;
 907
 908         if (!first || first == -1) {
 909                 if (hostapd_mac_comp_empty(conf->bssid) == 0) {
 910                         /* Allocate the next available BSSID. */
 911                         do {
 912                                 inc_byte_array(hapd->own_addr, ETH_ALEN);
 913                         } while (mac_in_conf(hapd->iconf, hapd->own_addr));
 914                 } else {
 915                         /* Allocate the configured BSSID. */
 916                         os_memcpy(hapd->own_addr, conf->bssid, ETH_ALEN);
 917
 918                         if (hostapd_mac_comp(hapd->own_addr,
 919                                              hapd->iface->bss[0]->own_addr) ==
 920                             0) {
 921                                 wpa_printf(MSG_ERROR, "BSS '%s' may not have "
 922                                            "BSSID set to the MAC address of "
 923                                            "the radio", conf->iface);
 924                                 return -1;
 925                         }
 926                 }
 927
 928                 hapd->interface_added = 1;
 929                 if (hostapd_if_add(hapd->iface->bss[0], WPA_IF_AP_BSS,
 930                                    conf->iface, hapd->own_addr, hapd,
 931                                    &hapd->drv_priv, force_ifname, if_addr,
 932                                    conf->bridge[0] ? conf->bridge : NULL,
 933                                    first == -1)) {
 934                         wpa_printf(MSG_ERROR, "Failed to add BSS (BSSID="
 935                                    MACSTR ")", MAC2STR(hapd->own_addr));
 936                         hapd->interface_added = 0;
 937                         return -1;
 938                 }
 939         }
 940
 941         if (conf->wmm_enabled < 0)
 942                 conf->wmm_enabled = hapd->iconf->ieee80211n;
 943
 944 #ifdef CONFIG_MESH
 945         if (hapd->iface->mconf == NULL)
 946                 flush_old_stations = 0;
 947 #endif /* CONFIG_MESH */
 948
 949         if (flush_old_stations)
 950                 hostapd_flush_old_stations(hapd,
 951                                            WLAN_REASON_PREV_AUTH_NOT_VALID);
 952         hostapd_set_privacy(hapd, 0);
 953
 954         hostapd_broadcast_wep_clear(hapd);
 955         if (hostapd_setup_encryption(conf->iface, hapd))
 956                 return -1;
 957
 958         /*
 959          * Fetch the SSID from the system and use it or,
 960          * if one was specified in the config file, verify they
 961          * match.
 962          */
 963         ssid_len = hostapd_get_ssid(hapd, ssid, sizeof(ssid));
 964         if (ssid_len < 0) {
 965                 wpa_printf(MSG_ERROR, "Could not read SSID from system");
 966                 return -1;
 967         }
 968         if (conf->ssid.ssid_set) {
 969                 /*
 970                  * If SSID is specified in the config file and it differs
 971                  * from what is being used then force installation of the
 972                  * new SSID.
 973                  */
 974                 set_ssid = (conf->ssid.ssid_len != (size_t) ssid_len ||
 975                             os_memcmp(conf->ssid.ssid, ssid, ssid_len) != 0);
 976         } else {
 977                 /*
 978                  * No SSID in the config file; just use the one we got
 979                  * from the system.
 980                  */
 981                 set_ssid = 0;
 982                 conf->ssid.ssid_len = ssid_len;
 983                 os_memcpy(conf->ssid.ssid, ssid, conf->ssid.ssid_len);
 984         }
 985
 986         if (!hostapd_drv_none(hapd)) {
 987                 wpa_printf(MSG_ERROR, "Using interface %s with hwaddr " MACSTR
 988                            " and ssid \"%s\"",
 989                            conf->iface, MAC2STR(hapd->own_addr),
 990                            wpa_ssid_txt(conf->ssid.ssid, conf->ssid.ssid_len));
 991         }
 992
 993         if (hostapd_setup_wpa_psk(conf)) {
 994                 wpa_printf(MSG_ERROR, "WPA-PSK setup failed.");
 995                 return -1;
 996         }
 997
 998         /* Set SSID for the kernel driver (to be used in beacon and probe
 999          * response frames) */
1000         if (set_ssid && hostapd_set_ssid(hapd, conf->ssid.ssid,
1001                                          conf->ssid.ssid_len)) {
1002                 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
1003                 return -1;
1004         }
1005
1006         if (wpa_debug_level <= MSG_MSGDUMP)
1007                 conf->radius->msg_dumps = 1;
1008 #ifndef CONFIG_NO_RADIUS
1009         hapd->radius = radius_client_init(hapd, conf->radius);
1010         if (hapd->radius == NULL) {
1011                 wpa_printf(MSG_ERROR, "RADIUS client initialization failed.");
1012                 return -1;
1013         }
1014
1015         if (conf->radius_das_port) {
1016                 struct radius_das_conf das_conf;
1017                 os_memset(&das_conf, 0, sizeof(das_conf));
1018                 das_conf.port = conf->radius_das_port;
1019                 das_conf.shared_secret = conf->radius_das_shared_secret;
1020                 das_conf.shared_secret_len =
1021                         conf->radius_das_shared_secret_len;
1022                 das_conf.client_addr = &conf->radius_das_client_addr;
1023                 das_conf.time_window = conf->radius_das_time_window;
1024                 das_conf.require_event_timestamp =
1025                         conf->radius_das_require_event_timestamp;
1026                 das_conf.ctx = hapd;
1027                 das_conf.disconnect = hostapd_das_disconnect;
1028                 hapd->radius_das = radius_das_init(&das_conf);
1029                 if (hapd->radius_das == NULL) {
1030                         wpa_printf(MSG_ERROR, "RADIUS DAS initialization "
1031                                    "failed.");
1032                         return -1;
1033                 }
1034         }
1035 #endif /* CONFIG_NO_RADIUS */
1036
1037         if (hostapd_acl_init(hapd)) {
1038                 wpa_printf(MSG_ERROR, "ACL initialization failed.");
1039                 return -1;
1040         }
1041         if (hostapd_init_wps(hapd, conf))
1042                 return -1;
1043
1044         if (authsrv_init(hapd) < 0)
1045                 return -1;
1046
1047         if (ieee802_1x_init(hapd)) {
1048                 wpa_printf(MSG_ERROR, "IEEE 802.1X initialization failed.");
1049                 return -1;
1050         }
1051
1052         if ((conf->wpa || conf->osen) && hostapd_setup_wpa(hapd))
1053                 return -1;
1054
1055         if (accounting_init(hapd)) {
1056                 wpa_printf(MSG_ERROR, "Accounting initialization failed.");
1057                 return -1;
1058         }
1059
1060         if (conf->ieee802_11f &&
1061             (hapd->iapp = iapp_init(hapd, conf->iapp_iface)) == NULL) {
1062                 wpa_printf(MSG_ERROR, "IEEE 802.11F (IAPP) initialization "
1063                            "failed.");
1064                 return -1;
1065         }
1066
1067 #ifdef CONFIG_INTERWORKING
1068         if (gas_serv_init(hapd)) {
1069                 wpa_printf(MSG_ERROR, "GAS server initialization failed");
1070                 return -1;
1071         }
1072
1073         if (conf->qos_map_set_len &&
1074             hostapd_drv_set_qos_map(hapd, conf->qos_map_set,
1075                                     conf->qos_map_set_len)) {
1076                 wpa_printf(MSG_ERROR, "Failed to initialize QoS Map");
1077                 return -1;
1078         }
1079 #endif /* CONFIG_INTERWORKING */
1080
1081         if (conf->bss_load_update_period && bss_load_update_init(hapd)) {
1082                 wpa_printf(MSG_ERROR, "BSS Load initialization failed");
1083                 return -1;
1084         }
1085
1086         if (conf->proxy_arp) {
1087                 if (x_snoop_init(hapd)) {
1088                         wpa_printf(MSG_ERROR,
1089                                    "Generic snooping infrastructure initialization failed");
1090                         return -1;
1091                 }
1092
1093                 if (dhcp_snoop_init(hapd)) {
1094                         wpa_printf(MSG_ERROR,
1095                                    "DHCP snooping initialization failed");
1096                         return -1;
1097                 }
1098
1099                 if (ndisc_snoop_init(hapd)) {
1100                         wpa_printf(MSG_ERROR,
1101                                    "Neighbor Discovery snooping initialization failed");
1102                         return -1;
1103                 }
1104         }
1105
1106         if (!hostapd_drv_none(hapd) && vlan_init(hapd)) {
1107                 wpa_printf(MSG_ERROR, "VLAN initialization failed.");
1108                 return -1;
1109         }
1110
1111         if (!conf->start_disabled && ieee802_11_set_beacon(hapd) < 0)
1112                 return -1;
1113
1114         if (hapd->wpa_auth && wpa_init_keys(hapd->wpa_auth) < 0)
1115                 return -1;
1116
1117         if (hapd->driver && hapd->driver->set_operstate)
1118                 hapd->driver->set_operstate(hapd->drv_priv, 1);
1119
1120         return 0;
1121 }
1122
1123
1124 static void hostapd_tx_queue_params(struct hostapd_iface *iface)
1125 {
1126         struct hostapd_data *hapd = iface->bss[0];
1127         int i;
1128         struct hostapd_tx_queue_params *p;
1129
1130 #ifdef CONFIG_MESH
1131         if (iface->mconf == NULL)
1132                 return;
1133 #endif /* CONFIG_MESH */
1134
1135         for (i = 0; i < NUM_TX_QUEUES; i++) {
1136                 p = &iface->conf->tx_queue[i];
1137
1138                 if (hostapd_set_tx_queue_params(hapd, i, p->aifs, p->cwmin,
1139                                                 p->cwmax, p->burst)) {
1140                         wpa_printf(MSG_DEBUG, "Failed to set TX queue "
1141                                    "parameters for queue %d.", i);
1142                         /* Continue anyway */
1143                 }
1144         }
1145 }
1146
1147
1148 static int hostapd_set_acl_list(struct hostapd_data *hapd,
1149                                 struct mac_acl_entry *mac_acl,
1150                                 int n_entries, u8 accept_acl)
1151 {
1152         struct hostapd_acl_params *acl_params;
1153         int i, err;
1154
1155         acl_params = os_zalloc(sizeof(*acl_params) +
1156                                (n_entries * sizeof(acl_params->mac_acl[0])));
1157         if (!acl_params)
1158                 return -ENOMEM;
1159
1160         for (i = 0; i < n_entries; i++)
1161                 os_memcpy(acl_params->mac_acl[i].addr, mac_acl[i].addr,
1162                           ETH_ALEN);
1163
1164         acl_params->acl_policy = accept_acl;
1165         acl_params->num_mac_acl = n_entries;
1166
1167         err = hostapd_drv_set_acl(hapd, acl_params);
1168
1169         os_free(acl_params);
1170
1171         return err;
1172 }
1173
1174
1175 static void hostapd_set_acl(struct hostapd_data *hapd)
1176 {
1177         struct hostapd_config *conf = hapd->iconf;
1178         int err;
1179         u8 accept_acl;
1180
1181         if (hapd->iface->drv_max_acl_mac_addrs == 0)
1182                 return;
1183
1184         if (conf->bss[0]->macaddr_acl == DENY_UNLESS_ACCEPTED) {
1185                 accept_acl = 1;
1186                 err = hostapd_set_acl_list(hapd, conf->bss[0]->accept_mac,
1187                                            conf->bss[0]->num_accept_mac,
1188                                            accept_acl);
1189                 if (err) {
1190                         wpa_printf(MSG_DEBUG, "Failed to set accept acl");
1191                         return;
1192                 }
1193         } else if (conf->bss[0]->macaddr_acl == ACCEPT_UNLESS_DENIED) {
1194                 accept_acl = 0;
1195                 err = hostapd_set_acl_list(hapd, conf->bss[0]->deny_mac,
1196                                            conf->bss[0]->num_deny_mac,
1197                                            accept_acl);
1198                 if (err) {
1199                         wpa_printf(MSG_DEBUG, "Failed to set deny acl");
1200                         return;
1201                 }
1202         }
1203 }
1204
1205
1206 static int start_ctrl_iface_bss(struct hostapd_data *hapd)
1207 {
1208         if (!hapd->iface->interfaces ||
1209             !hapd->iface->interfaces->ctrl_iface_init)
1210                 return 0;
1211
1212         if (hapd->iface->interfaces->ctrl_iface_init(hapd)) {
1213                 wpa_printf(MSG_ERROR,
1214                            "Failed to setup control interface for %s",
1215                            hapd->conf->iface);
1216                 return -1;
1217         }
1218
1219         return 0;
1220 }
1221
1222
1223 static int start_ctrl_iface(struct hostapd_iface *iface)
1224 {
1225         size_t i;
1226
1227         if (!iface->interfaces || !iface->interfaces->ctrl_iface_init)
1228                 return 0;
1229
1230         for (i = 0; i < iface->num_bss; i++) {
1231                 struct hostapd_data *hapd = iface->bss[i];
1232                 if (iface->interfaces->ctrl_iface_init(hapd)) {
1233                         wpa_printf(MSG_ERROR,
1234                                    "Failed to setup control interface for %s",
1235                                    hapd->conf->iface);
1236                         return -1;
1237                 }
1238         }
1239
1240         return 0;
1241 }
1242
1243
1244 static void channel_list_update_timeout(void *eloop_ctx, void *timeout_ctx)
1245 {
1246         struct hostapd_iface *iface = eloop_ctx;
1247
1248         if (!iface->wait_channel_update) {
1249                 wpa_printf(MSG_INFO, "Channel list update timeout, but interface was not waiting for it");
1250                 return;
1251         }
1252
1253         /*
1254          * It is possible that the existing channel list is acceptable, so try
1255          * to proceed.
1256          */
1257         wpa_printf(MSG_DEBUG, "Channel list update timeout - try to continue anyway");
1258         setup_interface2(iface);
1259 }
1260
1261
1262 void hostapd_channel_list_updated(struct hostapd_iface *iface, int initiator)
1263 {
1264         if (!iface->wait_channel_update || initiator != REGDOM_SET_BY_USER)
1265                 return;
1266
1267         wpa_printf(MSG_DEBUG, "Channel list updated - continue setup");
1268         eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
1269         setup_interface2(iface);
1270 }
1271
1272
1273 static int setup_interface(struct hostapd_iface *iface)
1274 {
1275         struct hostapd_data *hapd = iface->bss[0];
1276         size_t i;
1277
1278         /*
1279          * It is possible that setup_interface() is called after the interface
1280          * was disabled etc., in which case driver_ap_teardown is possibly set
1281          * to 1. Clear it here so any other key/station deletion, which is not
1282          * part of a teardown flow, would also call the relevant driver
1283          * callbacks.
1284          */
1285         iface->driver_ap_teardown = 0;
1286
1287         if (!iface->phy[0]) {
1288                 const char *phy = hostapd_drv_get_radio_name(hapd);
1289                 if (phy) {
1290                         wpa_printf(MSG_DEBUG, "phy: %s", phy);
1291                         os_strlcpy(iface->phy, phy, sizeof(iface->phy));
1292                 }
1293         }
1294
1295         /*
1296          * Make sure that all BSSes get configured with a pointer to the same
1297          * driver interface.
1298          */
1299         for (i = 1; i < iface->num_bss; i++) {
1300                 iface->bss[i]->driver = hapd->driver;
1301                 iface->bss[i]->drv_priv = hapd->drv_priv;
1302         }
1303
1304         if (hostapd_validate_bssid_configuration(iface))
1305                 return -1;
1306
1307         /*
1308          * Initialize control interfaces early to allow external monitoring of
1309          * channel setup operations that may take considerable amount of time
1310          * especially for DFS cases.
1311          */
1312         if (start_ctrl_iface(iface))
1313                 return -1;
1314
1315         if (hapd->iconf->country[0] && hapd->iconf->country[1]) {
1316                 char country[4], previous_country[4];
1317
1318                 hostapd_set_state(iface, HAPD_IFACE_COUNTRY_UPDATE);
1319                 if (hostapd_get_country(hapd, previous_country) < 0)
1320                         previous_country[0] = '\0';
1321
1322                 os_memcpy(country, hapd->iconf->country, 3);
1323                 country[3] = '\0';
1324                 if (hostapd_set_country(hapd, country) < 0) {
1325                         wpa_printf(MSG_ERROR, "Failed to set country code");
1326                         return -1;
1327                 }
1328
1329                 wpa_printf(MSG_DEBUG, "Previous country code %s, new country code %s",
1330                            previous_country, country);
1331
1332                 if (os_strncmp(previous_country, country, 2) != 0) {
1333                         wpa_printf(MSG_DEBUG, "Continue interface setup after channel list update");
1334                         iface->wait_channel_update = 1;
1335                         eloop_register_timeout(5, 0,
1336                                                channel_list_update_timeout,
1337                                                iface, NULL);
1338                         return 0;
1339                 }
1340         }
1341
1342         return setup_interface2(iface);
1343 }
1344
1345
1346 static int setup_interface2(struct hostapd_iface *iface)
1347 {
1348         iface->wait_channel_update = 0;
1349
1350         if (hostapd_get_hw_features(iface)) {
1351                 /* Not all drivers support this yet, so continue without hw
1352                  * feature data. */
1353         } else {
1354                 int ret = hostapd_select_hw_mode(iface);
1355                 if (ret < 0) {
1356                         wpa_printf(MSG_ERROR, "Could not select hw_mode and "
1357                                    "channel. (%d)", ret);
1358                         goto fail;
1359                 }
1360                 if (ret == 1) {
1361                         wpa_printf(MSG_DEBUG, "Interface initialization will be completed in a callback (ACS)");
1362                         return 0;
1363                 }
1364                 ret = hostapd_check_ht_capab(iface);
1365                 if (ret < 0)
1366                         goto fail;
1367                 if (ret == 1) {
1368                         wpa_printf(MSG_DEBUG, "Interface initialization will "
1369                                    "be completed in a callback");
1370                         return 0;
1371                 }
1372
1373                 if (iface->conf->ieee80211h)
1374                         wpa_printf(MSG_DEBUG, "DFS support is enabled");
1375         }
1376         return hostapd_setup_interface_complete(iface, 0);
1377
1378 fail:
1379         hostapd_set_state(iface, HAPD_IFACE_DISABLED);
1380         wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
1381         if (iface->interfaces && iface->interfaces->terminate_on_error)
1382                 eloop_terminate();
1383         return -1;
1384 }
1385
1386
1387 #ifdef CONFIG_FST
1388
1389 static const u8 * fst_hostapd_get_bssid_cb(void *ctx)
1390 {
1391         struct hostapd_data *hapd = ctx;
1392
1393         return hapd->own_addr;
1394 }
1395
1396
1397 static void fst_hostapd_get_channel_info_cb(void *ctx,
1398                                             enum hostapd_hw_mode *hw_mode,
1399                                             u8 *channel)
1400 {
1401         struct hostapd_data *hapd = ctx;
1402
1403         *hw_mode = ieee80211_freq_to_chan(hapd->iface->freq, channel);
1404 }
1405
1406
1407 static void fst_hostapd_set_ies_cb(void *ctx, const struct wpabuf *fst_ies)
1408 {
1409         struct hostapd_data *hapd = ctx;
1410
1411         if (hapd->iface->fst_ies != fst_ies) {
1412                 hapd->iface->fst_ies = fst_ies;
1413                 if (ieee802_11_set_beacon(hapd))
1414                         wpa_printf(MSG_WARNING, "FST: Cannot set beacon");
1415         }
1416 }
1417
1418
1419 static int fst_hostapd_send_action_cb(void *ctx, const u8 *da,
1420                                       struct wpabuf *buf)
1421 {
1422         struct hostapd_data *hapd = ctx;
1423
1424         return hostapd_drv_send_action(hapd, hapd->iface->freq, 0, da,
1425                                        wpabuf_head(buf), wpabuf_len(buf));
1426 }
1427
1428
1429 static const struct wpabuf * fst_hostapd_get_mb_ie_cb(void *ctx, const u8 *addr)
1430 {
1431         struct hostapd_data *hapd = ctx;
1432         struct sta_info *sta = ap_get_sta(hapd, addr);
1433
1434         return sta ? sta->mb_ies : NULL;
1435 }
1436
1437
1438 static void fst_hostapd_update_mb_ie_cb(void *ctx, const u8 *addr,
1439                                         const u8 *buf, size_t size)
1440 {
1441         struct hostapd_data *hapd = ctx;
1442         struct sta_info *sta = ap_get_sta(hapd, addr);
1443
1444         if (sta) {
1445                 struct mb_ies_info info;
1446
1447                 if (!mb_ies_info_by_ies(&info, buf, size)) {
1448                         wpabuf_free(sta->mb_ies);
1449                         sta->mb_ies = mb_ies_by_info(&info);
1450                 }
1451         }
1452 }
1453
1454
1455 static const u8 * fst_hostapd_get_sta(struct fst_get_peer_ctx **get_ctx,
1456                                       Boolean mb_only)
1457 {
1458         struct sta_info *s = (struct sta_info *) *get_ctx;
1459
1460         if (mb_only) {
1461                 for (; s && !s->mb_ies; s = s->next)
1462                         ;
1463         }
1464
1465         if (s) {
1466                 *get_ctx = (struct fst_get_peer_ctx *) s->next;
1467
1468                 return s->addr;
1469         }
1470
1471         *get_ctx = NULL;
1472         return NULL;
1473 }
1474
1475
1476 static const u8 * fst_hostapd_get_peer_first(void *ctx,
1477                                              struct fst_get_peer_ctx **get_ctx,
1478                                              Boolean mb_only)
1479 {
1480         struct hostapd_data *hapd = ctx;
1481
1482         *get_ctx = (struct fst_get_peer_ctx *) hapd->sta_list;
1483
1484         return fst_hostapd_get_sta(get_ctx, mb_only);
1485 }
1486
1487
1488 static const u8 * fst_hostapd_get_peer_next(void *ctx,
1489                                             struct fst_get_peer_ctx **get_ctx,
1490                                             Boolean mb_only)
1491 {
1492         return fst_hostapd_get_sta(get_ctx, mb_only);
1493 }
1494
1495
1496 void fst_hostapd_fill_iface_obj(struct hostapd_data *hapd,
1497                                 struct fst_wpa_obj *iface_obj)
1498 {
1499         iface_obj->ctx = hapd;
1500         iface_obj->get_bssid = fst_hostapd_get_bssid_cb;
1501         iface_obj->get_channel_info = fst_hostapd_get_channel_info_cb;
1502         iface_obj->set_ies = fst_hostapd_set_ies_cb;
1503         iface_obj->send_action = fst_hostapd_send_action_cb;
1504         iface_obj->get_mb_ie = fst_hostapd_get_mb_ie_cb;
1505         iface_obj->update_mb_ie = fst_hostapd_update_mb_ie_cb;
1506         iface_obj->get_peer_first = fst_hostapd_get_peer_first;
1507         iface_obj->get_peer_next = fst_hostapd_get_peer_next;
1508 }
1509
1510 #endif /* CONFIG_FST */
1511
1512
1513 static int hostapd_setup_interface_complete_sync(struct hostapd_iface *iface,
1514                                                  int err)
1515 {
1516         struct hostapd_data *hapd = iface->bss[0];
1517         size_t j;
1518         u8 *prev_addr;
1519         int delay_apply_cfg = 0;
1520         int res_dfs_offload = 0;
1521
1522         if (err)
1523                 goto fail;
1524
1525         wpa_printf(MSG_DEBUG, "Completing interface initialization");
1526         if (iface->conf->channel) {
1527 #ifdef NEED_AP_MLME
1528                 int res;
1529 #endif /* NEED_AP_MLME */
1530
1531                 iface->freq = hostapd_hw_get_freq(hapd, iface->conf->channel);
1532                 wpa_printf(MSG_DEBUG, "Mode: %s  Channel: %d  "
1533                            "Frequency: %d MHz",
1534                            hostapd_hw_mode_txt(iface->conf->hw_mode),
1535                            iface->conf->channel, iface->freq);
1536
1537 #ifdef NEED_AP_MLME
1538                 /* Handle DFS only if it is not offloaded to the driver */
1539                 if (!(iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD)) {
1540                         /* Check DFS */
1541                         res = hostapd_handle_dfs(iface);
1542                         if (res <= 0) {
1543                                 if (res < 0)
1544                                         goto fail;
1545                                 return res;
1546                         }
1547                 } else {
1548                         /* If DFS is offloaded to the driver */
1549                         res_dfs_offload = hostapd_handle_dfs_offload(iface);
1550                         if (res_dfs_offload <= 0) {
1551                                 if (res_dfs_offload < 0)
1552                                         goto fail;
1553                         } else {
1554                                 wpa_printf(MSG_DEBUG,
1555                                            "Proceed with AP/channel setup");
1556                                 /*
1557                                  * If this is a DFS channel, move to completing
1558                                  * AP setup.
1559                                  */
1560                                 if (res_dfs_offload == 1)
1561                                         goto dfs_offload;
1562                                 /* Otherwise fall through. */
1563                         }
1564                 }
1565 #endif /* NEED_AP_MLME */
1566
1567 #ifdef CONFIG_MESH
1568                 if (iface->mconf != NULL) {
1569                         wpa_printf(MSG_DEBUG,
1570                                    "%s: Mesh configuration will be applied while joining the mesh network",
1571                                    iface->bss[0]->conf->iface);
1572                         delay_apply_cfg = 1;
1573                 }
1574 #endif /* CONFIG_MESH */
1575
1576                 if (!delay_apply_cfg &&
1577                     hostapd_set_freq(hapd, hapd->iconf->hw_mode, iface->freq,
1578                                      hapd->iconf->channel,
1579                                      hapd->iconf->ieee80211n,
1580                                      hapd->iconf->ieee80211ac,
1581                                      hapd->iconf->secondary_channel,
1582                                      hapd->iconf->vht_oper_chwidth,
1583                                      hapd->iconf->vht_oper_centr_freq_seg0_idx,
1584                                      hapd->iconf->vht_oper_centr_freq_seg1_idx)) {
1585                         wpa_printf(MSG_ERROR, "Could not set channel for "
1586                                    "kernel driver");
1587                         goto fail;
1588                 }
1589         }
1590
1591         if (iface->current_mode) {
1592                 if (hostapd_prepare_rates(iface, iface->current_mode)) {
1593                         wpa_printf(MSG_ERROR, "Failed to prepare rates "
1594                                    "table.");
1595                         hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
1596                                        HOSTAPD_LEVEL_WARNING,
1597                                        "Failed to prepare rates table.");
1598                         goto fail;
1599                 }
1600         }
1601
1602         if (hapd->iconf->rts_threshold > -1 &&
1603             hostapd_set_rts(hapd, hapd->iconf->rts_threshold)) {
1604                 wpa_printf(MSG_ERROR, "Could not set RTS threshold for "
1605                            "kernel driver");
1606                 goto fail;
1607         }
1608
1609         if (hapd->iconf->fragm_threshold > -1 &&
1610             hostapd_set_frag(hapd, hapd->iconf->fragm_threshold)) {
1611                 wpa_printf(MSG_ERROR, "Could not set fragmentation threshold "
1612                            "for kernel driver");
1613                 goto fail;
1614         }
1615
1616         prev_addr = hapd->own_addr;
1617
1618         for (j = 0; j < iface->num_bss; j++) {
1619                 hapd = iface->bss[j];
1620                 if (j)
1621                         os_memcpy(hapd->own_addr, prev_addr, ETH_ALEN);
1622                 if (hostapd_setup_bss(hapd, j == 0)) {
1623                         do {
1624                                 hapd = iface->bss[j];
1625                                 hostapd_bss_deinit_no_free(hapd);
1626                                 hostapd_free_hapd_data(hapd);
1627                         } while (j-- > 0);
1628                         goto fail;
1629                 }
1630                 if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0)
1631                         prev_addr = hapd->own_addr;
1632         }
1633         hapd = iface->bss[0];
1634
1635         hostapd_tx_queue_params(iface);
1636
1637         ap_list_init(iface);
1638         dl_list_init(&iface->sta_seen);
1639
1640         hostapd_set_acl(hapd);
1641
1642         if (hostapd_driver_commit(hapd) < 0) {
1643                 wpa_printf(MSG_ERROR, "%s: Failed to commit driver "
1644                            "configuration", __func__);
1645                 goto fail;
1646         }
1647
1648         /*
1649          * WPS UPnP module can be initialized only when the "upnp_iface" is up.
1650          * If "interface" and "upnp_iface" are the same (e.g., non-bridge
1651          * mode), the interface is up only after driver_commit, so initialize
1652          * WPS after driver_commit.
1653          */
1654         for (j = 0; j < iface->num_bss; j++) {
1655                 if (hostapd_init_wps_complete(iface->bss[j]))
1656                         goto fail;
1657         }
1658
1659         if ((iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
1660             !res_dfs_offload) {
1661                 /*
1662                  * If freq is DFS, and DFS is offloaded to the driver, then wait
1663                  * for CAC to complete.
1664                  */
1665                 wpa_printf(MSG_DEBUG, "%s: Wait for CAC to complete", __func__);
1666                 return res_dfs_offload;
1667         }
1668
1669 #ifdef NEED_AP_MLME
1670 dfs_offload:
1671 #endif /* NEED_AP_MLME */
1672
1673 #ifdef CONFIG_FST
1674         if (hapd->iconf->fst_cfg.group_id[0]) {
1675                 struct fst_wpa_obj iface_obj;
1676
1677                 fst_hostapd_fill_iface_obj(hapd, &iface_obj);
1678                 iface->fst = fst_attach(hapd->conf->iface, hapd->own_addr,
1679                                         &iface_obj, &hapd->iconf->fst_cfg);
1680                 if (!iface->fst) {
1681                         wpa_printf(MSG_ERROR, "Could not attach to FST %s",
1682                                    hapd->iconf->fst_cfg.group_id);
1683                         goto fail;
1684                 }
1685         }
1686 #endif /* CONFIG_FST */
1687
1688         hostapd_set_state(iface, HAPD_IFACE_ENABLED);
1689         wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_ENABLED);
1690         if (hapd->setup_complete_cb)
1691                 hapd->setup_complete_cb(hapd->setup_complete_cb_ctx);
1692
1693         wpa_printf(MSG_DEBUG, "%s: Setup of interface done.",
1694                    iface->bss[0]->conf->iface);
1695         if (iface->interfaces && iface->interfaces->terminate_on_error > 0)
1696                 iface->interfaces->terminate_on_error--;
1697
1698         return 0;
1699
1700 fail:
1701         wpa_printf(MSG_ERROR, "Interface initialization failed");
1702         hostapd_set_state(iface, HAPD_IFACE_DISABLED);
1703         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
1704 #ifdef CONFIG_FST
1705         if (iface->fst) {
1706                 fst_detach(iface->fst);
1707                 iface->fst = NULL;
1708         }
1709 #endif /* CONFIG_FST */
1710         if (iface->interfaces && iface->interfaces->terminate_on_error)
1711                 eloop_terminate();
1712         return -1;
1713 }
1714
1715
1716 /**
1717  * hostapd_setup_interface_complete - Complete interface setup
1718  *
1719  * This function is called when previous steps in the interface setup has been
1720  * completed. This can also start operations, e.g., DFS, that will require
1721  * additional processing before interface is ready to be enabled. Such
1722  * operations will call this function from eloop callbacks when finished.
1723  */
1724 int hostapd_setup_interface_complete(struct hostapd_iface *iface, int err)
1725 {
1726         struct hapd_interfaces *interfaces = iface->interfaces;
1727         struct hostapd_data *hapd = iface->bss[0];
1728         unsigned int i;
1729         int not_ready_in_sync_ifaces = 0;
1730
1731         if (!iface->need_to_start_in_sync)
1732                 return hostapd_setup_interface_complete_sync(iface, err);
1733
1734         if (err) {
1735                 wpa_printf(MSG_ERROR, "Interface initialization failed");
1736                 hostapd_set_state(iface, HAPD_IFACE_DISABLED);
1737                 iface->need_to_start_in_sync = 0;
1738                 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
1739                 if (interfaces && interfaces->terminate_on_error)
1740                         eloop_terminate();
1741                 return -1;
1742         }
1743
1744         if (iface->ready_to_start_in_sync) {
1745                 /* Already in ready and waiting. should never happpen */
1746                 return 0;
1747         }
1748
1749         for (i = 0; i < interfaces->count; i++) {
1750                 if (interfaces->iface[i]->need_to_start_in_sync &&
1751                     !interfaces->iface[i]->ready_to_start_in_sync)
1752                         not_ready_in_sync_ifaces++;
1753         }
1754
1755         /*
1756          * Check if this is the last interface, if yes then start all the other
1757          * waiting interfaces. If not, add this interface to the waiting list.
1758          */
1759         if (not_ready_in_sync_ifaces > 1 && iface->state == HAPD_IFACE_DFS) {
1760                 /*
1761                  * If this interface went through CAC, do not synchronize, just
1762                  * start immediately.
1763                  */
1764                 iface->need_to_start_in_sync = 0;
1765                 wpa_printf(MSG_INFO,
1766                            "%s: Finished CAC - bypass sync and start interface",
1767                            iface->bss[0]->conf->iface);
1768                 return hostapd_setup_interface_complete_sync(iface, err);
1769         }
1770
1771         if (not_ready_in_sync_ifaces > 1) {
1772                 /* need to wait as there are other interfaces still coming up */
1773                 iface->ready_to_start_in_sync = 1;
1774                 wpa_printf(MSG_INFO,
1775                            "%s: Interface waiting to sync with other interfaces",
1776                            iface->bss[0]->conf->iface);
1777                 return 0;
1778         }
1779
1780         wpa_printf(MSG_INFO,
1781                    "%s: Last interface to sync - starting all interfaces",
1782                    iface->bss[0]->conf->iface);
1783         iface->need_to_start_in_sync = 0;
1784         hostapd_setup_interface_complete_sync(iface, err);
1785         for (i = 0; i < interfaces->count; i++) {
1786                 if (interfaces->iface[i]->need_to_start_in_sync &&
1787                     interfaces->iface[i]->ready_to_start_in_sync) {
1788                         hostapd_setup_interface_complete_sync(
1789                                 interfaces->iface[i], 0);
1790                         /* Only once the interfaces are sync started */
1791                         interfaces->iface[i]->need_to_start_in_sync = 0;
1792                 }
1793         }
1794
1795         return 0;
1796 }
1797
1798
1799 /**
1800  * hostapd_setup_interface - Setup of an interface
1801  * @iface: Pointer to interface data.
1802  * Returns: 0 on success, -1 on failure
1803  *
1804  * Initializes the driver interface, validates the configuration,
1805  * and sets driver parameters based on the configuration.
1806  * Flushes old stations, sets the channel, encryption,
1807  * beacons, and WDS links based on the configuration.
1808  *
1809  * If interface setup requires more time, e.g., to perform HT co-ex scans, ACS,
1810  * or DFS operations, this function returns 0 before such operations have been
1811  * completed. The pending operations are registered into eloop and will be
1812  * completed from eloop callbacks. Those callbacks end up calling
1813  * hostapd_setup_interface_complete() once setup has been completed.
1814  */
1815 int hostapd_setup_interface(struct hostapd_iface *iface)
1816 {
1817         int ret;
1818
1819         ret = setup_interface(iface);
1820         if (ret) {
1821                 wpa_printf(MSG_ERROR, "%s: Unable to setup interface.",
1822                            iface->bss[0]->conf->iface);
1823                 return -1;
1824         }
1825
1826         return 0;
1827 }
1828
1829
1830 /**
1831  * hostapd_alloc_bss_data - Allocate and initialize per-BSS data
1832  * @hapd_iface: Pointer to interface data
1833  * @conf: Pointer to per-interface configuration
1834  * @bss: Pointer to per-BSS configuration for this BSS
1835  * Returns: Pointer to allocated BSS data
1836  *
1837  * This function is used to allocate per-BSS data structure. This data will be
1838  * freed after hostapd_cleanup() is called for it during interface
1839  * deinitialization.
1840  */
1841 struct hostapd_data *
1842 hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface,
1843                        struct hostapd_config *conf,
1844                        struct hostapd_bss_config *bss)
1845 {
1846         struct hostapd_data *hapd;
1847
1848         hapd = os_zalloc(sizeof(*hapd));
1849         if (hapd == NULL)
1850                 return NULL;
1851
1852         hapd->new_assoc_sta_cb = hostapd_new_assoc_sta;
1853         hapd->iconf = conf;
1854         hapd->conf = bss;
1855         hapd->iface = hapd_iface;
1856         hapd->driver = hapd->iconf->driver;
1857         hapd->ctrl_sock = -1;
1858
1859         return hapd;
1860 }
1861
1862
1863 static void hostapd_bss_deinit(struct hostapd_data *hapd)
1864 {
1865         wpa_printf(MSG_DEBUG, "%s: deinit bss %s", __func__,
1866                    hapd->conf->iface);
1867         hostapd_bss_deinit_no_free(hapd);
1868         wpa_msg(hapd->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
1869         hostapd_cleanup(hapd);
1870 }
1871
1872
1873 void hostapd_interface_deinit(struct hostapd_iface *iface)
1874 {
1875         int j;
1876
1877         wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
1878         if (iface == NULL)
1879                 return;
1880
1881         hostapd_set_state(iface, HAPD_IFACE_DISABLED);
1882
1883 #ifdef CONFIG_IEEE80211N
1884 #ifdef NEED_AP_MLME
1885         hostapd_stop_setup_timers(iface);
1886         eloop_cancel_timeout(ap_ht2040_timeout, iface, NULL);
1887 #endif /* NEED_AP_MLME */
1888 #endif /* CONFIG_IEEE80211N */
1889         eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
1890         iface->wait_channel_update = 0;
1891
1892 #ifdef CONFIG_FST
1893         if (iface->fst) {
1894                 fst_detach(iface->fst);
1895                 iface->fst = NULL;
1896         }
1897 #endif /* CONFIG_FST */
1898
1899         for (j = iface->num_bss - 1; j >= 0; j--)
1900                 hostapd_bss_deinit(iface->bss[j]);
1901 }
1902
1903
1904 void hostapd_interface_free(struct hostapd_iface *iface)
1905 {
1906         size_t j;
1907         wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
1908         for (j = 0; j < iface->num_bss; j++) {
1909                 wpa_printf(MSG_DEBUG, "%s: free hapd %p",
1910                            __func__, iface->bss[j]);
1911                 os_free(iface->bss[j]);
1912         }
1913         hostapd_cleanup_iface(iface);
1914 }
1915
1916
1917 /**
1918  * hostapd_init - Allocate and initialize per-interface data
1919  * @config_file: Path to the configuration file
1920  * Returns: Pointer to the allocated interface data or %NULL on failure
1921  *
1922  * This function is used to allocate main data structures for per-interface
1923  * data. The allocated data buffer will be freed by calling
1924  * hostapd_cleanup_iface().
1925  */
1926 struct hostapd_iface * hostapd_init(struct hapd_interfaces *interfaces,
1927                                     const char *config_file)
1928 {
1929         struct hostapd_iface *hapd_iface = NULL;
1930         struct hostapd_config *conf = NULL;
1931         struct hostapd_data *hapd;
1932         size_t i;
1933
1934         hapd_iface = os_zalloc(sizeof(*hapd_iface));
1935         if (hapd_iface == NULL)
1936                 goto fail;
1937
1938         hapd_iface->config_fname = os_strdup(config_file);
1939         if (hapd_iface->config_fname == NULL)
1940                 goto fail;
1941
1942         conf = interfaces->config_read_cb(hapd_iface->config_fname);
1943         if (conf == NULL)
1944                 goto fail;
1945         hapd_iface->conf = conf;
1946
1947         hapd_iface->num_bss = conf->num_bss;
1948         hapd_iface->bss = os_calloc(conf->num_bss,
1949                                     sizeof(struct hostapd_data *));
1950         if (hapd_iface->bss == NULL)
1951                 goto fail;
1952
1953         for (i = 0; i < conf->num_bss; i++) {
1954                 hapd = hapd_iface->bss[i] =
1955                         hostapd_alloc_bss_data(hapd_iface, conf,
1956                                                conf->bss[i]);
1957                 if (hapd == NULL)
1958                         goto fail;
1959                 hapd->msg_ctx = hapd;
1960         }
1961
1962         return hapd_iface;
1963
1964 fail:
1965         wpa_printf(MSG_ERROR, "Failed to set up interface with %s",
1966                    config_file);
1967         if (conf)
1968                 hostapd_config_free(conf);
1969         if (hapd_iface) {
1970                 os_free(hapd_iface->config_fname);
1971                 os_free(hapd_iface->bss);
1972                 wpa_printf(MSG_DEBUG, "%s: free iface %p",
1973                            __func__, hapd_iface);
1974                 os_free(hapd_iface);
1975         }
1976         return NULL;
1977 }
1978
1979
1980 static int ifname_in_use(struct hapd_interfaces *interfaces, const char *ifname)
1981 {
1982         size_t i, j;
1983
1984         for (i = 0; i < interfaces->count; i++) {
1985                 struct hostapd_iface *iface = interfaces->iface[i];
1986                 for (j = 0; j < iface->num_bss; j++) {
1987                         struct hostapd_data *hapd = iface->bss[j];
1988                         if (os_strcmp(ifname, hapd->conf->iface) == 0)
1989                                 return 1;
1990                 }
1991         }
1992
1993         return 0;
1994 }
1995
1996
1997 /**
1998  * hostapd_interface_init_bss - Read configuration file and init BSS data
1999  *
2000  * This function is used to parse configuration file for a BSS. This BSS is
2001  * added to an existing interface sharing the same radio (if any) or a new
2002  * interface is created if this is the first interface on a radio. This
2003  * allocate memory for the BSS. No actual driver operations are started.
2004  *
2005  * This is similar to hostapd_interface_init(), but for a case where the
2006  * configuration is used to add a single BSS instead of all BSSes for a radio.
2007  */
2008 struct hostapd_iface *
2009 hostapd_interface_init_bss(struct hapd_interfaces *interfaces, const char *phy,
2010                            const char *config_fname, int debug)
2011 {
2012         struct hostapd_iface *new_iface = NULL, *iface = NULL;
2013         struct hostapd_data *hapd;
2014         int k;
2015         size_t i, bss_idx;
2016
2017         if (!phy || !*phy)
2018                 return NULL;
2019
2020         for (i = 0; i < interfaces->count; i++) {
2021                 if (os_strcmp(interfaces->iface[i]->phy, phy) == 0) {
2022                         iface = interfaces->iface[i];
2023                         break;
2024                 }
2025         }
2026
2027         wpa_printf(MSG_INFO, "Configuration file: %s (phy %s)%s",
2028                    config_fname, phy, iface ? "" : " --> new PHY");
2029         if (iface) {
2030                 struct hostapd_config *conf;
2031                 struct hostapd_bss_config **tmp_conf;
2032                 struct hostapd_data **tmp_bss;
2033                 struct hostapd_bss_config *bss;
2034                 const char *ifname;
2035
2036                 /* Add new BSS to existing iface */
2037                 conf = interfaces->config_read_cb(config_fname);
2038                 if (conf == NULL)
2039                         return NULL;
2040                 if (conf->num_bss > 1) {
2041                         wpa_printf(MSG_ERROR, "Multiple BSSes specified in BSS-config");
2042                         hostapd_config_free(conf);
2043                         return NULL;
2044                 }
2045
2046                 ifname = conf->bss[0]->iface;
2047                 if (ifname[0] != '\0' && ifname_in_use(interfaces, ifname)) {
2048                         wpa_printf(MSG_ERROR,
2049                                    "Interface name %s already in use", ifname);
2050                         hostapd_config_free(conf);
2051                         return NULL;
2052                 }
2053
2054                 tmp_conf = os_realloc_array(
2055                         iface->conf->bss, iface->conf->num_bss + 1,
2056                         sizeof(struct hostapd_bss_config *));
2057                 tmp_bss = os_realloc_array(iface->bss, iface->num_bss + 1,
2058                                            sizeof(struct hostapd_data *));
2059                 if (tmp_bss)
2060                         iface->bss = tmp_bss;
2061                 if (tmp_conf) {
2062                         iface->conf->bss = tmp_conf;
2063                         iface->conf->last_bss = tmp_conf[0];
2064                 }
2065                 if (tmp_bss == NULL || tmp_conf == NULL) {
2066                         hostapd_config_free(conf);
2067                         return NULL;
2068                 }
2069                 bss = iface->conf->bss[iface->conf->num_bss] = conf->bss[0];
2070                 iface->conf->num_bss++;
2071
2072                 hapd = hostapd_alloc_bss_data(iface, iface->conf, bss);
2073                 if (hapd == NULL) {
2074                         iface->conf->num_bss--;
2075                         hostapd_config_free(conf);
2076                         return NULL;
2077                 }
2078                 iface->conf->last_bss = bss;
2079                 iface->bss[iface->num_bss] = hapd;
2080                 hapd->msg_ctx = hapd;
2081
2082                 bss_idx = iface->num_bss++;
2083                 conf->num_bss--;
2084                 conf->bss[0] = NULL;
2085                 hostapd_config_free(conf);
2086         } else {
2087                 /* Add a new iface with the first BSS */
2088                 new_iface = iface = hostapd_init(interfaces, config_fname);
2089                 if (!iface)
2090                         return NULL;
2091                 os_strlcpy(iface->phy, phy, sizeof(iface->phy));
2092                 iface->interfaces = interfaces;
2093                 bss_idx = 0;
2094         }
2095
2096         for (k = 0; k < debug; k++) {
2097                 if (iface->bss[bss_idx]->conf->logger_stdout_level > 0)
2098                         iface->bss[bss_idx]->conf->logger_stdout_level--;
2099         }
2100
2101         if (iface->conf->bss[bss_idx]->iface[0] == '\0' &&
2102             !hostapd_drv_none(iface->bss[bss_idx])) {
2103                 wpa_printf(MSG_ERROR, "Interface name not specified in %s",
2104                            config_fname);
2105                 if (new_iface)
2106                         hostapd_interface_deinit_free(new_iface);
2107                 return NULL;
2108         }
2109
2110         return iface;
2111 }
2112
2113
2114 void hostapd_interface_deinit_free(struct hostapd_iface *iface)
2115 {
2116         const struct wpa_driver_ops *driver;
2117         void *drv_priv;
2118
2119         wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
2120         if (iface == NULL)
2121                 return;
2122         wpa_printf(MSG_DEBUG, "%s: num_bss=%u conf->num_bss=%u",
2123                    __func__, (unsigned int) iface->num_bss,
2124                    (unsigned int) iface->conf->num_bss);
2125         driver = iface->bss[0]->driver;
2126         drv_priv = iface->bss[0]->drv_priv;
2127         hostapd_interface_deinit(iface);
2128         wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit",
2129                    __func__, driver, drv_priv);
2130         if (driver && driver->hapd_deinit && drv_priv) {
2131                 driver->hapd_deinit(drv_priv);
2132                 iface->bss[0]->drv_priv = NULL;
2133         }
2134         hostapd_interface_free(iface);
2135 }
2136
2137
2138 static void hostapd_deinit_driver(const struct wpa_driver_ops *driver,
2139                                   void *drv_priv,
2140                                   struct hostapd_iface *hapd_iface)
2141 {
2142         size_t j;
2143
2144         wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit",
2145                    __func__, driver, drv_priv);
2146         if (driver && driver->hapd_deinit && drv_priv) {
2147                 driver->hapd_deinit(drv_priv);
2148                 for (j = 0; j < hapd_iface->num_bss; j++) {
2149                         wpa_printf(MSG_DEBUG, "%s:bss[%d]->drv_priv=%p",
2150                                    __func__, (int) j,
2151                                    hapd_iface->bss[j]->drv_priv);
2152                         if (hapd_iface->bss[j]->drv_priv == drv_priv)
2153                                 hapd_iface->bss[j]->drv_priv = NULL;
2154                 }
2155         }
2156 }
2157
2158
2159 int hostapd_enable_iface(struct hostapd_iface *hapd_iface)
2160 {
2161         size_t j;
2162
2163         if (hapd_iface->bss[0]->drv_priv != NULL) {
2164                 wpa_printf(MSG_ERROR, "Interface %s already enabled",
2165                            hapd_iface->conf->bss[0]->iface);
2166                 return -1;
2167         }
2168
2169         wpa_printf(MSG_DEBUG, "Enable interface %s",
2170                    hapd_iface->conf->bss[0]->iface);
2171
2172         for (j = 0; j < hapd_iface->num_bss; j++)
2173                 hostapd_set_security_params(hapd_iface->conf->bss[j], 1);
2174         if (hostapd_config_check(hapd_iface->conf, 1) < 0) {
2175                 wpa_printf(MSG_INFO, "Invalid configuration - cannot enable");
2176                 return -1;
2177         }
2178
2179         if (hapd_iface->interfaces == NULL ||
2180             hapd_iface->interfaces->driver_init == NULL ||
2181             hapd_iface->interfaces->driver_init(hapd_iface))
2182                 return -1;
2183
2184         if (hostapd_setup_interface(hapd_iface)) {
2185                 hostapd_deinit_driver(hapd_iface->bss[0]->driver,
2186                                       hapd_iface->bss[0]->drv_priv,
2187                                       hapd_iface);
2188                 return -1;
2189         }
2190
2191         return 0;
2192 }
2193
2194
2195 int hostapd_reload_iface(struct hostapd_iface *hapd_iface)
2196 {
2197         size_t j;
2198
2199         wpa_printf(MSG_DEBUG, "Reload interface %s",
2200                    hapd_iface->conf->bss[0]->iface);
2201         for (j = 0; j < hapd_iface->num_bss; j++)
2202                 hostapd_set_security_params(hapd_iface->conf->bss[j], 1);
2203         if (hostapd_config_check(hapd_iface->conf, 1) < 0) {
2204                 wpa_printf(MSG_ERROR, "Updated configuration is invalid");
2205                 return -1;
2206         }
2207         hostapd_clear_old(hapd_iface);
2208         for (j = 0; j < hapd_iface->num_bss; j++)
2209                 hostapd_reload_bss(hapd_iface->bss[j]);
2210
2211         return 0;
2212 }
2213
2214
2215 int hostapd_disable_iface(struct hostapd_iface *hapd_iface)
2216 {
2217         size_t j;
2218         const struct wpa_driver_ops *driver;
2219         void *drv_priv;
2220
2221         if (hapd_iface == NULL)
2222                 return -1;
2223
2224         if (hapd_iface->bss[0]->drv_priv == NULL) {
2225                 wpa_printf(MSG_INFO, "Interface %s already disabled",
2226                            hapd_iface->conf->bss[0]->iface);
2227                 return -1;
2228         }
2229
2230         wpa_msg(hapd_iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
2231         driver = hapd_iface->bss[0]->driver;
2232         drv_priv = hapd_iface->bss[0]->drv_priv;
2233
2234         hapd_iface->driver_ap_teardown =
2235                 !!(hapd_iface->drv_flags &
2236                    WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
2237
2238         /* same as hostapd_interface_deinit without deinitializing ctrl-iface */
2239         for (j = 0; j < hapd_iface->num_bss; j++) {
2240                 struct hostapd_data *hapd = hapd_iface->bss[j];
2241                 hostapd_bss_deinit_no_free(hapd);
2242                 hostapd_free_hapd_data(hapd);
2243         }
2244
2245         hostapd_deinit_driver(driver, drv_priv, hapd_iface);
2246
2247         /* From hostapd_cleanup_iface: These were initialized in
2248          * hostapd_setup_interface and hostapd_setup_interface_complete
2249          */
2250         hostapd_cleanup_iface_partial(hapd_iface);
2251
2252         wpa_printf(MSG_DEBUG, "Interface %s disabled",
2253                    hapd_iface->bss[0]->conf->iface);
2254         hostapd_set_state(hapd_iface, HAPD_IFACE_DISABLED);
2255         return 0;
2256 }
2257
2258
2259 static struct hostapd_iface *
2260 hostapd_iface_alloc(struct hapd_interfaces *interfaces)
2261 {
2262         struct hostapd_iface **iface, *hapd_iface;
2263
2264         iface = os_realloc_array(interfaces->iface, interfaces->count + 1,
2265                                  sizeof(struct hostapd_iface *));
2266         if (iface == NULL)
2267                 return NULL;
2268         interfaces->iface = iface;
2269         hapd_iface = interfaces->iface[interfaces->count] =
2270                 os_zalloc(sizeof(*hapd_iface));
2271         if (hapd_iface == NULL) {
2272                 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for "
2273                            "the interface", __func__);
2274                 return NULL;
2275         }
2276         interfaces->count++;
2277         hapd_iface->interfaces = interfaces;
2278
2279         return hapd_iface;
2280 }
2281
2282
2283 static struct hostapd_config *
2284 hostapd_config_alloc(struct hapd_interfaces *interfaces, const char *ifname,
2285                      const char *ctrl_iface, const char *driver)
2286 {
2287         struct hostapd_bss_config *bss;
2288         struct hostapd_config *conf;
2289
2290         /* Allocates memory for bss and conf */
2291         conf = hostapd_config_defaults();
2292         if (conf == NULL) {
2293                  wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for "
2294                                 "configuration", __func__);
2295                 return NULL;
2296         }
2297
2298         if (driver) {
2299                 int j;
2300
2301                 for (j = 0; wpa_drivers[j]; j++) {
2302                         if (os_strcmp(driver, wpa_drivers[j]->name) == 0) {
2303                                 conf->driver = wpa_drivers[j];
2304                                 goto skip;
2305                         }
2306                 }
2307
2308                 wpa_printf(MSG_ERROR,
2309                            "Invalid/unknown driver '%s' - registering the default driver",
2310                            driver);
2311         }
2312
2313         conf->driver = wpa_drivers[0];
2314         if (conf->driver == NULL) {
2315                 wpa_printf(MSG_ERROR, "No driver wrappers registered!");
2316                 hostapd_config_free(conf);
2317                 return NULL;
2318         }
2319
2320 skip:
2321         bss = conf->last_bss = conf->bss[0];
2322
2323         os_strlcpy(bss->iface, ifname, sizeof(bss->iface));
2324         bss->ctrl_interface = os_strdup(ctrl_iface);
2325         if (bss->ctrl_interface == NULL) {
2326                 hostapd_config_free(conf);
2327                 return NULL;
2328         }
2329
2330         /* Reading configuration file skipped, will be done in SET!
2331          * From reading the configuration till the end has to be done in
2332          * SET
2333          */
2334         return conf;
2335 }
2336
2337
2338 static int hostapd_data_alloc(struct hostapd_iface *hapd_iface,
2339                               struct hostapd_config *conf)
2340 {
2341         size_t i;
2342         struct hostapd_data *hapd;
2343
2344         hapd_iface->bss = os_calloc(conf->num_bss,
2345                                     sizeof(struct hostapd_data *));
2346         if (hapd_iface->bss == NULL)
2347                 return -1;
2348
2349         for (i = 0; i < conf->num_bss; i++) {
2350                 hapd = hapd_iface->bss[i] =
2351                         hostapd_alloc_bss_data(hapd_iface, conf, conf->bss[i]);
2352                 if (hapd == NULL) {
2353                         while (i > 0) {
2354                                 i--;
2355                                 os_free(hapd_iface->bss[i]);
2356                                 hapd_iface->bss[i] = NULL;
2357                         }
2358                         os_free(hapd_iface->bss);
2359                         hapd_iface->bss = NULL;
2360                         return -1;
2361                 }
2362                 hapd->msg_ctx = hapd;
2363         }
2364
2365         hapd_iface->conf = conf;
2366         hapd_iface->num_bss = conf->num_bss;
2367
2368         return 0;
2369 }
2370
2371
2372 int hostapd_add_iface(struct hapd_interfaces *interfaces, char *buf)
2373 {
2374         struct hostapd_config *conf = NULL;
2375         struct hostapd_iface *hapd_iface = NULL, *new_iface = NULL;
2376         struct hostapd_data *hapd;
2377         char *ptr;
2378         size_t i, j;
2379         const char *conf_file = NULL, *phy_name = NULL;
2380
2381         if (os_strncmp(buf, "bss_config=", 11) == 0) {
2382                 char *pos;
2383                 phy_name = buf + 11;
2384                 pos = os_strchr(phy_name, ':');
2385                 if (!pos)
2386                         return -1;
2387                 *pos++ = '\0';
2388                 conf_file = pos;
2389                 if (!os_strlen(conf_file))
2390                         return -1;
2391
2392                 hapd_iface = hostapd_interface_init_bss(interfaces, phy_name,
2393                                                         conf_file, 0);
2394                 if (!hapd_iface)
2395                         return -1;
2396                 for (j = 0; j < interfaces->count; j++) {
2397                         if (interfaces->iface[j] == hapd_iface)
2398                                 break;
2399                 }
2400                 if (j == interfaces->count) {
2401                         struct hostapd_iface **tmp;
2402                         tmp = os_realloc_array(interfaces->iface,
2403                                                interfaces->count + 1,
2404                                                sizeof(struct hostapd_iface *));
2405                         if (!tmp) {
2406                                 hostapd_interface_deinit_free(hapd_iface);
2407                                 return -1;
2408                         }
2409                         interfaces->iface = tmp;
2410                         interfaces->iface[interfaces->count++] = hapd_iface;
2411                         new_iface = hapd_iface;
2412                 }
2413
2414                 if (new_iface) {
2415                         if (interfaces->driver_init(hapd_iface))
2416                                 goto fail;
2417
2418                         if (hostapd_setup_interface(hapd_iface)) {
2419                                 hostapd_deinit_driver(
2420                                         hapd_iface->bss[0]->driver,
2421                                         hapd_iface->bss[0]->drv_priv,
2422                                         hapd_iface);
2423                                 goto fail;
2424                         }
2425                 } else {
2426                         /* Assign new BSS with bss[0]'s driver info */
2427                         hapd = hapd_iface->bss[hapd_iface->num_bss - 1];
2428                         hapd->driver = hapd_iface->bss[0]->driver;
2429                         hapd->drv_priv = hapd_iface->bss[0]->drv_priv;
2430                         os_memcpy(hapd->own_addr, hapd_iface->bss[0]->own_addr,
2431                                   ETH_ALEN);
2432
2433                         if (start_ctrl_iface_bss(hapd) < 0 ||
2434                             (hapd_iface->state == HAPD_IFACE_ENABLED &&
2435                              hostapd_setup_bss(hapd, -1))) {
2436                                 hostapd_cleanup(hapd);
2437                                 hapd_iface->bss[hapd_iface->num_bss - 1] = NULL;
2438                                 hapd_iface->conf->num_bss--;
2439                                 hapd_iface->num_bss--;
2440                                 wpa_printf(MSG_DEBUG, "%s: free hapd %p %s",
2441                                            __func__, hapd, hapd->conf->iface);
2442                                 hostapd_config_free_bss(hapd->conf);
2443                                 hapd->conf = NULL;
2444                                 os_free(hapd);
2445                                 return -1;
2446                         }
2447                 }
2448                 return 0;
2449         }
2450
2451         ptr = os_strchr(buf, ' ');
2452         if (ptr == NULL)
2453                 return -1;
2454         *ptr++ = '\0';
2455
2456         if (os_strncmp(ptr, "config=", 7) == 0)
2457                 conf_file = ptr + 7;
2458
2459         for (i = 0; i < interfaces->count; i++) {
2460                 if (!os_strcmp(interfaces->iface[i]->conf->bss[0]->iface,
2461                                buf)) {
2462                         wpa_printf(MSG_INFO, "Cannot add interface - it "
2463                                    "already exists");
2464                         return -1;
2465                 }
2466         }
2467
2468         hapd_iface = hostapd_iface_alloc(interfaces);
2469         if (hapd_iface == NULL) {
2470                 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
2471                            "for interface", __func__);
2472                 goto fail;
2473         }
2474         new_iface = hapd_iface;
2475
2476         if (conf_file && interfaces->config_read_cb) {
2477                 conf = interfaces->config_read_cb(conf_file);
2478                 if (conf && conf->bss)
2479                         os_strlcpy(conf->bss[0]->iface, buf,
2480                                    sizeof(conf->bss[0]->iface));
2481         } else {
2482                 char *driver = os_strchr(ptr, ' ');
2483
2484                 if (driver)
2485                         *driver++ = '\0';
2486                 conf = hostapd_config_alloc(interfaces, buf, ptr, driver);
2487         }
2488
2489         if (conf == NULL || conf->bss == NULL) {
2490                 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
2491                            "for configuration", __func__);
2492                 goto fail;
2493         }
2494
2495         if (hostapd_data_alloc(hapd_iface, conf) < 0) {
2496                 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
2497                            "for hostapd", __func__);
2498                 goto fail;
2499         }
2500         conf = NULL;
2501
2502         if (start_ctrl_iface(hapd_iface) < 0)
2503                 goto fail;
2504
2505         wpa_printf(MSG_INFO, "Add interface '%s'",
2506                    hapd_iface->conf->bss[0]->iface);
2507
2508         return 0;
2509
2510 fail:
2511         if (conf)
2512                 hostapd_config_free(conf);
2513         if (hapd_iface) {
2514                 if (hapd_iface->bss) {
2515                         for (i = 0; i < hapd_iface->num_bss; i++) {
2516                                 hapd = hapd_iface->bss[i];
2517                                 if (!hapd)
2518                                         continue;
2519                                 if (hapd_iface->interfaces &&
2520                                     hapd_iface->interfaces->ctrl_iface_deinit)
2521                                         hapd_iface->interfaces->
2522                                                 ctrl_iface_deinit(hapd);
2523                                 wpa_printf(MSG_DEBUG, "%s: free hapd %p (%s)",
2524                                            __func__, hapd_iface->bss[i],
2525                                            hapd->conf->iface);
2526                                 hostapd_cleanup(hapd);
2527                                 os_free(hapd);
2528                                 hapd_iface->bss[i] = NULL;
2529                         }
2530                         os_free(hapd_iface->bss);
2531                         hapd_iface->bss = NULL;
2532                 }
2533                 if (new_iface) {
2534                         interfaces->count--;
2535                         interfaces->iface[interfaces->count] = NULL;
2536                 }
2537                 hostapd_cleanup_iface(hapd_iface);
2538         }
2539         return -1;
2540 }
2541
2542
2543 static int hostapd_remove_bss(struct hostapd_iface *iface, unsigned int idx)
2544 {
2545         size_t i;
2546
2547         wpa_printf(MSG_INFO, "Remove BSS '%s'", iface->conf->bss[idx]->iface);
2548
2549         /* Remove hostapd_data only if it has already been initialized */
2550         if (idx < iface->num_bss) {
2551                 struct hostapd_data *hapd = iface->bss[idx];
2552
2553                 hostapd_bss_deinit(hapd);
2554                 wpa_printf(MSG_DEBUG, "%s: free hapd %p (%s)",
2555                            __func__, hapd, hapd->conf->iface);
2556                 hostapd_config_free_bss(hapd->conf);
2557                 hapd->conf = NULL;
2558                 os_free(hapd);
2559
2560                 iface->num_bss--;
2561
2562                 for (i = idx; i < iface->num_bss; i++)
2563                         iface->bss[i] = iface->bss[i + 1];
2564         } else {
2565                 hostapd_config_free_bss(iface->conf->bss[idx]);
2566                 iface->conf->bss[idx] = NULL;
2567         }
2568
2569         iface->conf->num_bss--;
2570         for (i = idx; i < iface->conf->num_bss; i++)
2571                 iface->conf->bss[i] = iface->conf->bss[i + 1];
2572
2573         return 0;
2574 }
2575
2576
2577 int hostapd_remove_iface(struct hapd_interfaces *interfaces, char *buf)
2578 {
2579         struct hostapd_iface *hapd_iface;
2580         size_t i, j, k = 0;
2581
2582         for (i = 0; i < interfaces->count; i++) {
2583                 hapd_iface = interfaces->iface[i];
2584                 if (hapd_iface == NULL)
2585                         return -1;
2586                 if (!os_strcmp(hapd_iface->conf->bss[0]->iface, buf)) {
2587                         wpa_printf(MSG_INFO, "Remove interface '%s'", buf);
2588                         hapd_iface->driver_ap_teardown =
2589                                 !!(hapd_iface->drv_flags &
2590                                    WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
2591
2592                         hostapd_interface_deinit_free(hapd_iface);
2593                         k = i;
2594                         while (k < (interfaces->count - 1)) {
2595                                 interfaces->iface[k] =
2596                                         interfaces->iface[k + 1];
2597                                 k++;
2598                         }
2599                         interfaces->count--;
2600                         return 0;
2601                 }
2602
2603                 for (j = 0; j < hapd_iface->conf->num_bss; j++) {
2604                         if (!os_strcmp(hapd_iface->conf->bss[j]->iface, buf)) {
2605                                 hapd_iface->driver_ap_teardown =
2606                                         !(hapd_iface->drv_flags &
2607                                           WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
2608                                 return hostapd_remove_bss(hapd_iface, j);
2609                         }
2610                 }
2611         }
2612         return -1;
2613 }
2614
2615
2616 /**
2617  * hostapd_new_assoc_sta - Notify that a new station associated with the AP
2618  * @hapd: Pointer to BSS data
2619  * @sta: Pointer to the associated STA data
2620  * @reassoc: 1 to indicate this was a re-association; 0 = first association
2621  *
2622  * This function will be called whenever a station associates with the AP. It
2623  * can be called from ieee802_11.c for drivers that export MLME to hostapd and
2624  * from drv_callbacks.c based on driver events for drivers that take care of
2625  * management frames (IEEE 802.11 authentication and association) internally.
2626  */
2627 void hostapd_new_assoc_sta(struct hostapd_data *hapd, struct sta_info *sta,
2628                            int reassoc)
2629 {
2630         if (hapd->tkip_countermeasures) {
2631                 hostapd_drv_sta_deauth(hapd, sta->addr,
2632                                        WLAN_REASON_MICHAEL_MIC_FAILURE);
2633                 return;
2634         }
2635
2636         hostapd_prune_associations(hapd, sta->addr);
2637
2638         /* IEEE 802.11F (IAPP) */
2639         if (hapd->conf->ieee802_11f)
2640                 iapp_new_station(hapd->iapp, sta);
2641
2642 #ifdef CONFIG_P2P
2643         if (sta->p2p_ie == NULL && !sta->no_p2p_set) {
2644                 sta->no_p2p_set = 1;
2645                 hapd->num_sta_no_p2p++;
2646                 if (hapd->num_sta_no_p2p == 1)
2647                         hostapd_p2p_non_p2p_sta_connected(hapd);
2648         }
2649 #endif /* CONFIG_P2P */
2650
2651         /* Start accounting here, if IEEE 802.1X and WPA are not used.
2652          * IEEE 802.1X/WPA code will start accounting after the station has
2653          * been authorized. */
2654         if (!hapd->conf->ieee802_1x && !hapd->conf->wpa && !hapd->conf->osen) {
2655                 ap_sta_set_authorized(hapd, sta, 1);
2656                 os_get_reltime(&sta->connected_time);
2657                 accounting_sta_start(hapd, sta);
2658         }
2659
2660         /* Start IEEE 802.1X authentication process for new stations */
2661         ieee802_1x_new_station(hapd, sta);
2662         if (reassoc) {
2663                 if (sta->auth_alg != WLAN_AUTH_FT &&
2664                     !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)))
2665                         wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH);
2666         } else
2667                 wpa_auth_sta_associated(hapd->wpa_auth, sta->wpa_sm);
2668
2669         if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)) {
2670                 wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout "
2671                            "for " MACSTR " (%d seconds - ap_max_inactivity)",
2672                            __func__, MAC2STR(sta->addr),
2673                            hapd->conf->ap_max_inactivity);
2674                 eloop_cancel_timeout(ap_handle_timer, hapd, sta);
2675                 eloop_register_timeout(hapd->conf->ap_max_inactivity, 0,
2676                                        ap_handle_timer, hapd, sta);
2677         }
2678 }
2679
2680
2681 const char * hostapd_state_text(enum hostapd_iface_state s)
2682 {
2683         switch (s) {
2684         case HAPD_IFACE_UNINITIALIZED:
2685                 return "UNINITIALIZED";
2686         case HAPD_IFACE_DISABLED:
2687                 return "DISABLED";
2688         case HAPD_IFACE_COUNTRY_UPDATE:
2689                 return "COUNTRY_UPDATE";
2690         case HAPD_IFACE_ACS:
2691                 return "ACS";
2692         case HAPD_IFACE_HT_SCAN:
2693                 return "HT_SCAN";
2694         case HAPD_IFACE_DFS:
2695                 return "DFS";
2696         case HAPD_IFACE_ENABLED:
2697                 return "ENABLED";
2698         }
2699
2700         return "UNKNOWN";
2701 }
2702
2703
2704 void hostapd_set_state(struct hostapd_iface *iface, enum hostapd_iface_state s)
2705 {
2706         wpa_printf(MSG_INFO, "%s: interface state %s->%s",
2707                    iface->conf->bss[0]->iface, hostapd_state_text(iface->state),
2708                    hostapd_state_text(s));
2709         iface->state = s;
2710 }
2711
2712
2713 int hostapd_csa_in_progress(struct hostapd_iface *iface)
2714 {
2715         unsigned int i;
2716
2717         for (i = 0; i < iface->num_bss; i++)
2718                 if (iface->bss[i]->csa_in_progress)
2719                         return 1;
2720         return 0;
2721 }
2722
2723
2724 #ifdef NEED_AP_MLME
2725
2726 static void free_beacon_data(struct beacon_data *beacon)
2727 {
2728         os_free(beacon->head);
2729         beacon->head = NULL;
2730         os_free(beacon->tail);
2731         beacon->tail = NULL;
2732         os_free(beacon->probe_resp);
2733         beacon->probe_resp = NULL;
2734         os_free(beacon->beacon_ies);
2735         beacon->beacon_ies = NULL;
2736         os_free(beacon->proberesp_ies);
2737         beacon->proberesp_ies = NULL;
2738         os_free(beacon->assocresp_ies);
2739         beacon->assocresp_ies = NULL;
2740 }
2741
2742
2743 static int hostapd_build_beacon_data(struct hostapd_data *hapd,
2744                                      struct beacon_data *beacon)
2745 {
2746         struct wpabuf *beacon_extra, *proberesp_extra, *assocresp_extra;
2747         struct wpa_driver_ap_params params;
2748         int ret;
2749
2750         os_memset(beacon, 0, sizeof(*beacon));
2751         ret = ieee802_11_build_ap_params(hapd, &params);
2752         if (ret < 0)
2753                 return ret;
2754
2755         ret = hostapd_build_ap_extra_ies(hapd, &beacon_extra,
2756                                          &proberesp_extra,
2757                                          &assocresp_extra);
2758         if (ret)
2759                 goto free_ap_params;
2760
2761         ret = -1;
2762         beacon->head = os_malloc(params.head_len);
2763         if (!beacon->head)
2764                 goto free_ap_extra_ies;
2765
2766         os_memcpy(beacon->head, params.head, params.head_len);
2767         beacon->head_len = params.head_len;
2768
2769         beacon->tail = os_malloc(params.tail_len);
2770         if (!beacon->tail)
2771                 goto free_beacon;
2772
2773         os_memcpy(beacon->tail, params.tail, params.tail_len);
2774         beacon->tail_len = params.tail_len;
2775
2776         if (params.proberesp != NULL) {
2777                 beacon->probe_resp = os_malloc(params.proberesp_len);
2778                 if (!beacon->probe_resp)
2779                         goto free_beacon;
2780
2781                 os_memcpy(beacon->probe_resp, params.proberesp,
2782                           params.proberesp_len);
2783                 beacon->probe_resp_len = params.proberesp_len;
2784         }
2785
2786         /* copy the extra ies */
2787         if (beacon_extra) {
2788                 beacon->beacon_ies = os_malloc(wpabuf_len(beacon_extra));
2789                 if (!beacon->beacon_ies)
2790                         goto free_beacon;
2791
2792                 os_memcpy(beacon->beacon_ies,
2793                           beacon_extra->buf, wpabuf_len(beacon_extra));
2794                 beacon->beacon_ies_len = wpabuf_len(beacon_extra);
2795         }
2796
2797         if (proberesp_extra) {
2798                 beacon->proberesp_ies =
2799                         os_malloc(wpabuf_len(proberesp_extra));
2800                 if (!beacon->proberesp_ies)
2801                         goto free_beacon;
2802
2803                 os_memcpy(beacon->proberesp_ies, proberesp_extra->buf,
2804                           wpabuf_len(proberesp_extra));
2805                 beacon->proberesp_ies_len = wpabuf_len(proberesp_extra);
2806         }
2807
2808         if (assocresp_extra) {
2809                 beacon->assocresp_ies =
2810                         os_malloc(wpabuf_len(assocresp_extra));
2811                 if (!beacon->assocresp_ies)
2812                         goto free_beacon;
2813
2814                 os_memcpy(beacon->assocresp_ies, assocresp_extra->buf,
2815                           wpabuf_len(assocresp_extra));
2816                 beacon->assocresp_ies_len = wpabuf_len(assocresp_extra);
2817         }
2818
2819         ret = 0;
2820 free_beacon:
2821         /* if the function fails, the caller should not free beacon data */
2822         if (ret)
2823                 free_beacon_data(beacon);
2824
2825 free_ap_extra_ies:
2826         hostapd_free_ap_extra_ies(hapd, beacon_extra, proberesp_extra,
2827                                   assocresp_extra);
2828 free_ap_params:
2829         ieee802_11_free_ap_params(&params);
2830         return ret;
2831 }
2832
2833
2834 /*
2835  * TODO: This flow currently supports only changing channel and width within
2836  * the same hw_mode. Any other changes to MAC parameters or provided settings
2837  * are not supported.
2838  */
2839 static int hostapd_change_config_freq(struct hostapd_data *hapd,
2840                                       struct hostapd_config *conf,
2841                                       struct hostapd_freq_params *params,
2842                                       struct hostapd_freq_params *old_params)
2843 {
2844         int channel;
2845
2846         if (!params->channel) {
2847                 /* check if the new channel is supported by hw */
2848                 params->channel = hostapd_hw_get_channel(hapd, params->freq);
2849         }
2850
2851         channel = params->channel;
2852         if (!channel)
2853                 return -1;
2854
2855         /* if a pointer to old_params is provided we save previous state */
2856         if (old_params &&
2857             hostapd_set_freq_params(old_params, conf->hw_mode,
2858                                     hostapd_hw_get_freq(hapd, conf->channel),
2859                                     conf->channel, conf->ieee80211n,
2860                                     conf->ieee80211ac,
2861                                     conf->secondary_channel,
2862                                     conf->vht_oper_chwidth,
2863                                     conf->vht_oper_centr_freq_seg0_idx,
2864                                     conf->vht_oper_centr_freq_seg1_idx,
2865                                     conf->vht_capab))
2866                 return -1;
2867
2868         switch (params->bandwidth) {
2869         case 0:
2870         case 20:
2871         case 40:
2872                 conf->vht_oper_chwidth = VHT_CHANWIDTH_USE_HT;
2873                 break;
2874         case 80:
2875                 if (params->center_freq2)
2876                         conf->vht_oper_chwidth = VHT_CHANWIDTH_80P80MHZ;
2877                 else
2878                         conf->vht_oper_chwidth = VHT_CHANWIDTH_80MHZ;
2879                 break;
2880         case 160:
2881                 conf->vht_oper_chwidth = VHT_CHANWIDTH_160MHZ;
2882                 break;
2883         default:
2884                 return -1;
2885         }
2886
2887         conf->channel = channel;
2888         conf->ieee80211n = params->ht_enabled;
2889         conf->secondary_channel = params->sec_channel_offset;
2890         ieee80211_freq_to_chan(params->center_freq1,
2891                                &conf->vht_oper_centr_freq_seg0_idx);
2892         ieee80211_freq_to_chan(params->center_freq2,
2893                                &conf->vht_oper_centr_freq_seg1_idx);
2894
2895         /* TODO: maybe call here hostapd_config_check here? */
2896
2897         return 0;
2898 }
2899
2900
2901 static int hostapd_fill_csa_settings(struct hostapd_data *hapd,
2902                                      struct csa_settings *settings)
2903 {
2904         struct hostapd_iface *iface = hapd->iface;
2905         struct hostapd_freq_params old_freq;
2906         int ret;
2907         u8 chan, vht_bandwidth;
2908
2909         os_memset(&old_freq, 0, sizeof(old_freq));
2910         if (!iface || !iface->freq || hapd->csa_in_progress)
2911                 return -1;
2912
2913         switch (settings->freq_params.bandwidth) {
2914         case 80:
2915                 if (settings->freq_params.center_freq2)
2916                         vht_bandwidth = VHT_CHANWIDTH_80P80MHZ;
2917                 else
2918                         vht_bandwidth = VHT_CHANWIDTH_80MHZ;
2919                 break;
2920         case 160:
2921                 vht_bandwidth = VHT_CHANWIDTH_160MHZ;
2922                 break;
2923         default:
2924                 vht_bandwidth = VHT_CHANWIDTH_USE_HT;
2925                 break;
2926         }
2927
2928         if (ieee80211_freq_to_channel_ext(
2929                     settings->freq_params.freq,
2930                     settings->freq_params.sec_channel_offset,
2931                     vht_bandwidth,
2932                     &hapd->iface->cs_oper_class,
2933                     &chan) == NUM_HOSTAPD_MODES) {
2934                 wpa_printf(MSG_DEBUG,
2935                            "invalid frequency for channel switch (freq=%d, sec_channel_offset=%d, vht_enabled=%d)",
2936                            settings->freq_params.freq,
2937                            settings->freq_params.sec_channel_offset,
2938                            settings->freq_params.vht_enabled);
2939                 return -1;
2940         }
2941
2942         settings->freq_params.channel = chan;
2943
2944         ret = hostapd_change_config_freq(iface->bss[0], iface->conf,
2945                                          &settings->freq_params,
2946                                          &old_freq);
2947         if (ret)
2948                 return ret;
2949
2950         ret = hostapd_build_beacon_data(hapd, &settings->beacon_after);
2951
2952         /* change back the configuration */
2953         hostapd_change_config_freq(iface->bss[0], iface->conf,
2954                                    &old_freq, NULL);
2955
2956         if (ret)
2957                 return ret;
2958
2959         /* set channel switch parameters for csa ie */
2960         hapd->cs_freq_params = settings->freq_params;
2961         hapd->cs_count = settings->cs_count;
2962         hapd->cs_block_tx = settings->block_tx;
2963
2964         ret = hostapd_build_beacon_data(hapd, &settings->beacon_csa);
2965         if (ret) {
2966                 free_beacon_data(&settings->beacon_after);
2967                 return ret;
2968         }
2969
2970         settings->counter_offset_beacon[0] = hapd->cs_c_off_beacon;
2971         settings->counter_offset_presp[0] = hapd->cs_c_off_proberesp;
2972         settings->counter_offset_beacon[1] = hapd->cs_c_off_ecsa_beacon;
2973         settings->counter_offset_presp[1] = hapd->cs_c_off_ecsa_proberesp;
2974
2975         return 0;
2976 }
2977
2978
2979 void hostapd_cleanup_cs_params(struct hostapd_data *hapd)
2980 {
2981         os_memset(&hapd->cs_freq_params, 0, sizeof(hapd->cs_freq_params));
2982         hapd->cs_count = 0;
2983         hapd->cs_block_tx = 0;
2984         hapd->cs_c_off_beacon = 0;
2985         hapd->cs_c_off_proberesp = 0;
2986         hapd->csa_in_progress = 0;
2987         hapd->cs_c_off_ecsa_beacon = 0;
2988         hapd->cs_c_off_ecsa_proberesp = 0;
2989 }
2990
2991
2992 int hostapd_switch_channel(struct hostapd_data *hapd,
2993                            struct csa_settings *settings)
2994 {
2995         int ret;
2996
2997         if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
2998                 wpa_printf(MSG_INFO, "CSA is not supported");
2999                 return -1;
3000         }
3001
3002         ret = hostapd_fill_csa_settings(hapd, settings);
3003         if (ret)
3004                 return ret;
3005
3006         ret = hostapd_drv_switch_channel(hapd, settings);
3007         free_beacon_data(&settings->beacon_csa);
3008         free_beacon_data(&settings->beacon_after);
3009
3010         if (ret) {
3011                 /* if we failed, clean cs parameters */
3012                 hostapd_cleanup_cs_params(hapd);
3013                 return ret;
3014         }
3015
3016         hapd->csa_in_progress = 1;
3017         return 0;
3018 }
3019
3020
3021 void
3022 hostapd_switch_channel_fallback(struct hostapd_iface *iface,
3023                                 const struct hostapd_freq_params *freq_params)
3024 {
3025         int vht_seg0_idx = 0, vht_seg1_idx = 0, vht_bw = VHT_CHANWIDTH_USE_HT;
3026         unsigned int i;
3027
3028         wpa_printf(MSG_DEBUG, "Restarting all CSA-related BSSes");
3029
3030         if (freq_params->center_freq1)
3031                 vht_seg0_idx = 36 + (freq_params->center_freq1 - 5180) / 5;
3032         if (freq_params->center_freq2)
3033                 vht_seg1_idx = 36 + (freq_params->center_freq2 - 5180) / 5;
3034
3035         switch (freq_params->bandwidth) {
3036         case 0:
3037         case 20:
3038         case 40:
3039                 vht_bw = VHT_CHANWIDTH_USE_HT;
3040                 break;
3041         case 80:
3042                 if (freq_params->center_freq2)
3043                         vht_bw = VHT_CHANWIDTH_80P80MHZ;
3044                 else
3045                         vht_bw = VHT_CHANWIDTH_80MHZ;
3046                 break;
3047         case 160:
3048                 vht_bw = VHT_CHANWIDTH_160MHZ;
3049                 break;
3050         default:
3051                 wpa_printf(MSG_WARNING, "Unknown CSA bandwidth: %d",
3052                            freq_params->bandwidth);
3053                 break;
3054         }
3055
3056         iface->freq = freq_params->freq;
3057         iface->conf->channel = freq_params->channel;
3058         iface->conf->secondary_channel = freq_params->sec_channel_offset;
3059         iface->conf->vht_oper_centr_freq_seg0_idx = vht_seg0_idx;
3060         iface->conf->vht_oper_centr_freq_seg1_idx = vht_seg1_idx;
3061         iface->conf->vht_oper_chwidth = vht_bw;
3062         iface->conf->ieee80211n = freq_params->ht_enabled;
3063         iface->conf->ieee80211ac = freq_params->vht_enabled;
3064
3065         /*
3066          * cs_params must not be cleared earlier because the freq_params
3067          * argument may actually point to one of these.
3068          */
3069         for (i = 0; i < iface->num_bss; i++)
3070                 hostapd_cleanup_cs_params(iface->bss[i]);
3071
3072         hostapd_disable_iface(iface);
3073         hostapd_enable_iface(iface);
3074 }
3075
3076
3077 struct hostapd_data * hostapd_get_iface(struct hapd_interfaces *interfaces,
3078                                         const char *ifname)
3079 {
3080         size_t i, j;
3081
3082         for (i = 0; i < interfaces->count; i++) {
3083                 struct hostapd_iface *iface = interfaces->iface[i];
3084
3085                 for (j = 0; j < iface->num_bss; j++) {
3086                         struct hostapd_data *hapd = iface->bss[j];
3087
3088                         if (os_strcmp(ifname, hapd->conf->iface) == 0)
3089                                 return hapd;
3090                 }
3091         }
3092
3093         return NULL;
3094 }
3095
3096 #endif /* NEED_AP_MLME */
3097
3098
3099 void hostapd_periodic_iface(struct hostapd_iface *iface)
3100 {
3101         size_t i;
3102
3103         ap_list_timer(iface);
3104
3105         for (i = 0; i < iface->num_bss; i++) {
3106                 struct hostapd_data *hapd = iface->bss[i];
3107
3108                 if (!hapd->started)
3109                         continue;
3110
3111 #ifndef CONFIG_NO_RADIUS
3112                 hostapd_acl_expire(hapd);
3113 #endif /* CONFIG_NO_RADIUS */
3114         }
3115 }