src/ap/beacon.c

   1 /*
   2  * hostapd / IEEE 802.11 Management: Beacon and Probe Request/Response
   3  * Copyright (c) 2002-2004, Instant802 Networks, Inc.
   4  * Copyright (c) 2005-2006, Devicescape Software, Inc.
   5  * Copyright (c) 2008-2012, Jouni Malinen <j@w1.fi>
   6  *
   7  * This software may be distributed under the terms of the BSD license.
   8  * See README for more details.
   9  */
  10
  11 #include "utils/includes.h"
  12
  13 #ifndef CONFIG_NATIVE_WINDOWS
  14
  15 #include "utils/common.h"
  16 #include "common/ieee802_11_defs.h"
  17 #include "common/ieee802_11_common.h"
  18 #include "common/hw_features_common.h"
  19 #include "wps/wps_defs.h"
  20 #include "p2p/p2p.h"
  21 #include "hostapd.h"
  22 #include "ieee802_11.h"
  23 #include "wpa_auth.h"
  24 #include "wmm.h"
  25 #include "ap_config.h"
  26 #include "sta_info.h"
  27 #include "p2p_hostapd.h"
  28 #include "ap_drv_ops.h"
  29 #include "beacon.h"
  30 #include "hs20.h"
  31 #include "dfs.h"
  32
  33
  34 #ifdef NEED_AP_MLME
  35
  36 static u8 * hostapd_eid_rm_enabled_capab(struct hostapd_data *hapd, u8 *eid,
  37                                          size_t len)
  38 {
  39         if (!hapd->conf->radio_measurements || len < 2 + 4)
  40                 return eid;
  41
  42         *eid++ = WLAN_EID_RRM_ENABLED_CAPABILITIES;
  43         *eid++ = 5;
  44         *eid++ = (hapd->conf->radio_measurements & BIT(0)) ?
  45                 WLAN_RRM_CAPS_NEIGHBOR_REPORT : 0x00;
  46         *eid++ = 0x00;
  47         *eid++ = 0x00;
  48         *eid++ = 0x00;
  49         *eid++ = 0x00;
  50         return eid;
  51 }
  52
  53
  54 static u8 * hostapd_eid_bss_load(struct hostapd_data *hapd, u8 *eid, size_t len)
  55 {
  56         if (len < 2 + 5)
  57                 return eid;
  58
  59 #ifdef CONFIG_TESTING_OPTIONS
  60         if (hapd->conf->bss_load_test_set) {
  61                 *eid++ = WLAN_EID_BSS_LOAD;
  62                 *eid++ = 5;
  63                 os_memcpy(eid, hapd->conf->bss_load_test, 5);
  64                 eid += 5;
  65                 return eid;
  66         }
  67 #endif /* CONFIG_TESTING_OPTIONS */
  68         if (hapd->conf->bss_load_update_period) {
  69                 *eid++ = WLAN_EID_BSS_LOAD;
  70                 *eid++ = 5;
  71                 WPA_PUT_LE16(eid, hapd->num_sta);
  72                 eid += 2;
  73                 *eid++ = hapd->iface->channel_utilization;
  74                 WPA_PUT_LE16(eid, 0); /* no available admission capabity */
  75                 eid += 2;
  76         }
  77         return eid;
  78 }
  79
  80
  81 static u8 ieee802_11_erp_info(struct hostapd_data *hapd)
  82 {
  83         u8 erp = 0;
  84
  85         if (hapd->iface->current_mode == NULL ||
  86             hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G)
  87                 return 0;
  88
  89         if (hapd->iface->olbc)
  90                 erp |= ERP_INFO_USE_PROTECTION;
  91         if (hapd->iface->num_sta_non_erp > 0) {
  92                 erp |= ERP_INFO_NON_ERP_PRESENT |
  93                         ERP_INFO_USE_PROTECTION;
  94         }
  95         if (hapd->iface->num_sta_no_short_preamble > 0 ||
  96             hapd->iconf->preamble == LONG_PREAMBLE)
  97                 erp |= ERP_INFO_BARKER_PREAMBLE_MODE;
  98
  99         return erp;
 100 }
 101
 102
 103 static u8 * hostapd_eid_ds_params(struct hostapd_data *hapd, u8 *eid)
 104 {
 105         *eid++ = WLAN_EID_DS_PARAMS;
 106         *eid++ = 1;
 107         *eid++ = hapd->iconf->channel;
 108         return eid;
 109 }
 110
 111
 112 static u8 * hostapd_eid_erp_info(struct hostapd_data *hapd, u8 *eid)
 113 {
 114         if (hapd->iface->current_mode == NULL ||
 115             hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G)
 116                 return eid;
 117
 118         /* Set NonERP_present and use_protection bits if there
 119          * are any associated NonERP stations. */
 120         /* TODO: use_protection bit can be set to zero even if
 121          * there are NonERP stations present. This optimization
 122          * might be useful if NonERP stations are "quiet".
 123          * See 802.11g/D6 E-1 for recommended practice.
 124          * In addition, Non ERP present might be set, if AP detects Non ERP
 125          * operation on other APs. */
 126
 127         /* Add ERP Information element */
 128         *eid++ = WLAN_EID_ERP_INFO;
 129         *eid++ = 1;
 130         *eid++ = ieee802_11_erp_info(hapd);
 131
 132         return eid;
 133 }
 134
 135
 136 static u8 * hostapd_eid_pwr_constraint(struct hostapd_data *hapd, u8 *eid)
 137 {
 138         u8 *pos = eid;
 139         u8 local_pwr_constraint = 0;
 140         int dfs;
 141
 142         if (hapd->iface->current_mode == NULL ||
 143             hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211A)
 144                 return eid;
 145
 146         /* Let host drivers add this IE if DFS support is offloaded */
 147         if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD)
 148                 return eid;
 149
 150         /*
 151          * There is no DFS support and power constraint was not directly
 152          * requested by config option.
 153          */
 154         if (!hapd->iconf->ieee80211h &&
 155             hapd->iconf->local_pwr_constraint == -1)
 156                 return eid;
 157
 158         /* Check if DFS is required by regulatory. */
 159         dfs = hostapd_is_dfs_required(hapd->iface);
 160         if (dfs < 0) {
 161                 wpa_printf(MSG_WARNING, "Failed to check if DFS is required; ret=%d",
 162                            dfs);
 163                 dfs = 0;
 164         }
 165
 166         if (dfs == 0 && hapd->iconf->local_pwr_constraint == -1)
 167                 return eid;
 168
 169         /*
 170          * ieee80211h (DFS) is enabled so Power Constraint element shall
 171          * be added when running on DFS channel whenever local_pwr_constraint
 172          * is configured or not. In order to meet regulations when TPC is not
 173          * implemented using a transmit power that is below the legal maximum
 174          * (including any mitigation factor) should help. In this case,
 175          * indicate 3 dB below maximum allowed transmit power.
 176          */
 177         if (hapd->iconf->local_pwr_constraint == -1)
 178                 local_pwr_constraint = 3;
 179
 180         /*
 181          * A STA that is not an AP shall use a transmit power less than or
 182          * equal to the local maximum transmit power level for the channel.
 183          * The local maximum transmit power can be calculated from the formula:
 184          * local max TX pwr = max TX pwr - local pwr constraint
 185          * Where max TX pwr is maximum transmit power level specified for
 186          * channel in Country element and local pwr constraint is specified
 187          * for channel in this Power Constraint element.
 188          */
 189
 190         /* Element ID */
 191         *pos++ = WLAN_EID_PWR_CONSTRAINT;
 192         /* Length */
 193         *pos++ = 1;
 194         /* Local Power Constraint */
 195         if (local_pwr_constraint)
 196                 *pos++ = local_pwr_constraint;
 197         else
 198                 *pos++ = hapd->iconf->local_pwr_constraint;
 199
 200         return pos;
 201 }
 202
 203
 204 static u8 * hostapd_eid_country_add(u8 *pos, u8 *end, int chan_spacing,
 205                                     struct hostapd_channel_data *start,
 206                                     struct hostapd_channel_data *prev)
 207 {
 208         if (end - pos < 3)
 209                 return pos;
 210
 211         /* first channel number */
 212         *pos++ = start->chan;
 213         /* number of channels */
 214         *pos++ = (prev->chan - start->chan) / chan_spacing + 1;
 215         /* maximum transmit power level */
 216         *pos++ = start->max_tx_power;
 217
 218         return pos;
 219 }
 220
 221
 222 static u8 * hostapd_eid_country(struct hostapd_data *hapd, u8 *eid,
 223                                 int max_len)
 224 {
 225         u8 *pos = eid;
 226         u8 *end = eid + max_len;
 227         int i;
 228         struct hostapd_hw_modes *mode;
 229         struct hostapd_channel_data *start, *prev;
 230         int chan_spacing = 1;
 231
 232         if (!hapd->iconf->ieee80211d || max_len < 6 ||
 233             hapd->iface->current_mode == NULL)
 234                 return eid;
 235
 236         *pos++ = WLAN_EID_COUNTRY;
 237         pos++; /* length will be set later */
 238         os_memcpy(pos, hapd->iconf->country, 3); /* e.g., 'US ' */
 239         pos += 3;
 240
 241         mode = hapd->iface->current_mode;
 242         if (mode->mode == HOSTAPD_MODE_IEEE80211A)
 243                 chan_spacing = 4;
 244
 245         start = prev = NULL;
 246         for (i = 0; i < mode->num_channels; i++) {
 247                 struct hostapd_channel_data *chan = &mode->channels[i];
 248                 if (chan->flag & HOSTAPD_CHAN_DISABLED)
 249                         continue;
 250                 if (start && prev &&
 251                     prev->chan + chan_spacing == chan->chan &&
 252                     start->max_tx_power == chan->max_tx_power) {
 253                         prev = chan;
 254                         continue; /* can use same entry */
 255                 }
 256
 257                 if (start && prev) {
 258                         pos = hostapd_eid_country_add(pos, end, chan_spacing,
 259                                                       start, prev);
 260                         start = NULL;
 261                 }
 262
 263                 /* Start new group */
 264                 start = prev = chan;
 265         }
 266
 267         if (start) {
 268                 pos = hostapd_eid_country_add(pos, end, chan_spacing,
 269                                               start, prev);
 270         }
 271
 272         if ((pos - eid) & 1) {
 273                 if (end - pos < 1)
 274                         return eid;
 275                 *pos++ = 0; /* pad for 16-bit alignment */
 276         }
 277
 278         eid[1] = (pos - eid) - 2;
 279
 280         return pos;
 281 }
 282
 283
 284 static u8 * hostapd_eid_wpa(struct hostapd_data *hapd, u8 *eid, size_t len)
 285 {
 286         const u8 *ie;
 287         size_t ielen;
 288
 289         ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &ielen);
 290         if (ie == NULL || ielen > len)
 291                 return eid;
 292
 293         os_memcpy(eid, ie, ielen);
 294         return eid + ielen;
 295 }
 296
 297
 298 static u8 * hostapd_eid_csa(struct hostapd_data *hapd, u8 *eid)
 299 {
 300         u8 chan;
 301
 302         if (!hapd->cs_freq_params.freq)
 303                 return eid;
 304
 305         if (ieee80211_freq_to_chan(hapd->cs_freq_params.freq, &chan) ==
 306             NUM_HOSTAPD_MODES)
 307                 return eid;
 308
 309         *eid++ = WLAN_EID_CHANNEL_SWITCH;
 310         *eid++ = 3;
 311         *eid++ = hapd->cs_block_tx;
 312         *eid++ = chan;
 313         *eid++ = hapd->cs_count;
 314
 315         return eid;
 316 }
 317
 318
 319 static u8 * hostapd_eid_secondary_channel(struct hostapd_data *hapd, u8 *eid)
 320 {
 321         u8 sec_ch;
 322
 323         if (!hapd->cs_freq_params.sec_channel_offset)
 324                 return eid;
 325
 326         if (hapd->cs_freq_params.sec_channel_offset == -1)
 327                 sec_ch = HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW;
 328         else if (hapd->cs_freq_params.sec_channel_offset == 1)
 329                 sec_ch = HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE;
 330         else
 331                 return eid;
 332
 333         *eid++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET;
 334         *eid++ = 1;
 335         *eid++ = sec_ch;
 336
 337         return eid;
 338 }
 339
 340
 341 static u8 * hostapd_add_csa_elems(struct hostapd_data *hapd, u8 *pos,
 342                                   u8 *start, unsigned int *csa_counter_off)
 343 {
 344         u8 *old_pos = pos;
 345
 346         if (!csa_counter_off)
 347                 return pos;
 348
 349         *csa_counter_off = 0;
 350         pos = hostapd_eid_csa(hapd, pos);
 351
 352         if (pos != old_pos) {
 353                 /* save an offset to the counter - should be last byte */
 354                 *csa_counter_off = pos - start - 1;
 355                 pos = hostapd_eid_secondary_channel(hapd, pos);
 356         }
 357
 358         return pos;
 359 }
 360
 361
 362 static u8 * hostapd_gen_probe_resp(struct hostapd_data *hapd,
 363                                    const struct ieee80211_mgmt *req,
 364                                    int is_p2p, size_t *resp_len)
 365 {
 366         struct ieee80211_mgmt *resp;
 367         u8 *pos, *epos;
 368         size_t buflen;
 369
 370 #define MAX_PROBERESP_LEN 768
 371         buflen = MAX_PROBERESP_LEN;
 372 #ifdef CONFIG_WPS
 373         if (hapd->wps_probe_resp_ie)
 374                 buflen += wpabuf_len(hapd->wps_probe_resp_ie);
 375 #endif /* CONFIG_WPS */
 376 #ifdef CONFIG_P2P
 377         if (hapd->p2p_probe_resp_ie)
 378                 buflen += wpabuf_len(hapd->p2p_probe_resp_ie);
 379 #endif /* CONFIG_P2P */
 380 #ifdef CONFIG_FST
 381         if (hapd->iface->fst_ies)
 382                 buflen += wpabuf_len(hapd->iface->fst_ies);
 383 #endif /* CONFIG_FST */
 384         if (hapd->conf->vendor_elements)
 385                 buflen += wpabuf_len(hapd->conf->vendor_elements);
 386         if (hapd->conf->vendor_vht) {
 387                 buflen += 5 + 2 + sizeof(struct ieee80211_vht_capabilities) +
 388                         2 + sizeof(struct ieee80211_vht_operation);
 389         }
 390         resp = os_zalloc(buflen);
 391         if (resp == NULL)
 392                 return NULL;
 393
 394         epos = ((u8 *) resp) + MAX_PROBERESP_LEN;
 395
 396         resp->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 397                                            WLAN_FC_STYPE_PROBE_RESP);
 398         if (req)
 399                 os_memcpy(resp->da, req->sa, ETH_ALEN);
 400         os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN);
 401
 402         os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN);
 403         resp->u.probe_resp.beacon_int =
 404                 host_to_le16(hapd->iconf->beacon_int);
 405
 406         /* hardware or low-level driver will setup seq_ctrl and timestamp */
 407         resp->u.probe_resp.capab_info =
 408                 host_to_le16(hostapd_own_capab_info(hapd));
 409
 410         pos = resp->u.probe_resp.variable;
 411         *pos++ = WLAN_EID_SSID;
 412         *pos++ = hapd->conf->ssid.ssid_len;
 413         os_memcpy(pos, hapd->conf->ssid.ssid, hapd->conf->ssid.ssid_len);
 414         pos += hapd->conf->ssid.ssid_len;
 415
 416         /* Supported rates */
 417         pos = hostapd_eid_supp_rates(hapd, pos);
 418
 419         /* DS Params */
 420         pos = hostapd_eid_ds_params(hapd, pos);
 421
 422         pos = hostapd_eid_country(hapd, pos, epos - pos);
 423
 424         /* Power Constraint element */
 425         pos = hostapd_eid_pwr_constraint(hapd, pos);
 426
 427         /* ERP Information element */
 428         pos = hostapd_eid_erp_info(hapd, pos);
 429
 430         /* Extended supported rates */
 431         pos = hostapd_eid_ext_supp_rates(hapd, pos);
 432
 433         /* RSN, MDIE, WPA */
 434         pos = hostapd_eid_wpa(hapd, pos, epos - pos);
 435
 436         pos = hostapd_eid_bss_load(hapd, pos, epos - pos);
 437
 438         pos = hostapd_eid_rm_enabled_capab(hapd, pos, epos - pos);
 439
 440 #ifdef CONFIG_IEEE80211N
 441         pos = hostapd_eid_ht_capabilities(hapd, pos);
 442         pos = hostapd_eid_ht_operation(hapd, pos);
 443 #endif /* CONFIG_IEEE80211N */
 444
 445         pos = hostapd_eid_ext_capab(hapd, pos);
 446
 447         pos = hostapd_eid_time_adv(hapd, pos);
 448         pos = hostapd_eid_time_zone(hapd, pos);
 449
 450         pos = hostapd_eid_interworking(hapd, pos);
 451         pos = hostapd_eid_adv_proto(hapd, pos);
 452         pos = hostapd_eid_roaming_consortium(hapd, pos);
 453
 454         pos = hostapd_add_csa_elems(hapd, pos, (u8 *)resp,
 455                                     &hapd->cs_c_off_proberesp);
 456
 457 #ifdef CONFIG_FST
 458         if (hapd->iface->fst_ies) {
 459                 os_memcpy(pos, wpabuf_head(hapd->iface->fst_ies),
 460                           wpabuf_len(hapd->iface->fst_ies));
 461                 pos += wpabuf_len(hapd->iface->fst_ies);
 462         }
 463 #endif /* CONFIG_FST */
 464
 465 #ifdef CONFIG_IEEE80211AC
 466         if (hapd->iconf->ieee80211ac && !hapd->conf->disable_11ac) {
 467                 pos = hostapd_eid_vht_capabilities(hapd, pos);
 468                 pos = hostapd_eid_vht_operation(hapd, pos);
 469         }
 470         if (hapd->conf->vendor_vht)
 471                 pos = hostapd_eid_vendor_vht(hapd, pos);
 472 #endif /* CONFIG_IEEE80211AC */
 473
 474         /* Wi-Fi Alliance WMM */
 475         pos = hostapd_eid_wmm(hapd, pos);
 476
 477 #ifdef CONFIG_WPS
 478         if (hapd->conf->wps_state && hapd->wps_probe_resp_ie) {
 479                 os_memcpy(pos, wpabuf_head(hapd->wps_probe_resp_ie),
 480                           wpabuf_len(hapd->wps_probe_resp_ie));
 481                 pos += wpabuf_len(hapd->wps_probe_resp_ie);
 482         }
 483 #endif /* CONFIG_WPS */
 484
 485 #ifdef CONFIG_P2P
 486         if ((hapd->conf->p2p & P2P_ENABLED) && is_p2p &&
 487             hapd->p2p_probe_resp_ie) {
 488                 os_memcpy(pos, wpabuf_head(hapd->p2p_probe_resp_ie),
 489                           wpabuf_len(hapd->p2p_probe_resp_ie));
 490                 pos += wpabuf_len(hapd->p2p_probe_resp_ie);
 491         }
 492 #endif /* CONFIG_P2P */
 493 #ifdef CONFIG_P2P_MANAGER
 494         if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) ==
 495             P2P_MANAGE)
 496                 pos = hostapd_eid_p2p_manage(hapd, pos);
 497 #endif /* CONFIG_P2P_MANAGER */
 498
 499 #ifdef CONFIG_HS20
 500         pos = hostapd_eid_hs20_indication(hapd, pos);
 501         pos = hostapd_eid_osen(hapd, pos);
 502 #endif /* CONFIG_HS20 */
 503
 504         if (hapd->conf->vendor_elements) {
 505                 os_memcpy(pos, wpabuf_head(hapd->conf->vendor_elements),
 506                           wpabuf_len(hapd->conf->vendor_elements));
 507                 pos += wpabuf_len(hapd->conf->vendor_elements);
 508         }
 509
 510         *resp_len = pos - (u8 *) resp;
 511         return (u8 *) resp;
 512 }
 513
 514
 515 enum ssid_match_result {
 516         NO_SSID_MATCH,
 517         EXACT_SSID_MATCH,
 518         WILDCARD_SSID_MATCH
 519 };
 520
 521 static enum ssid_match_result ssid_match(struct hostapd_data *hapd,
 522                                          const u8 *ssid, size_t ssid_len,
 523                                          const u8 *ssid_list,
 524                                          size_t ssid_list_len)
 525 {
 526         const u8 *pos, *end;
 527         int wildcard = 0;
 528
 529         if (ssid_len == 0)
 530                 wildcard = 1;
 531         if (ssid_len == hapd->conf->ssid.ssid_len &&
 532             os_memcmp(ssid, hapd->conf->ssid.ssid, ssid_len) == 0)
 533                 return EXACT_SSID_MATCH;
 534
 535         if (ssid_list == NULL)
 536                 return wildcard ? WILDCARD_SSID_MATCH : NO_SSID_MATCH;
 537
 538         pos = ssid_list;
 539         end = ssid_list + ssid_list_len;
 540         while (pos + 1 <= end) {
 541                 if (pos + 2 + pos[1] > end)
 542                         break;
 543                 if (pos[1] == 0)
 544                         wildcard = 1;
 545                 if (pos[1] == hapd->conf->ssid.ssid_len &&
 546                     os_memcmp(pos + 2, hapd->conf->ssid.ssid, pos[1]) == 0)
 547                         return EXACT_SSID_MATCH;
 548                 pos += 2 + pos[1];
 549         }
 550
 551         return wildcard ? WILDCARD_SSID_MATCH : NO_SSID_MATCH;
 552 }
 553
 554
 555 void handle_probe_req(struct hostapd_data *hapd,
 556                       const struct ieee80211_mgmt *mgmt, size_t len,
 557                       int ssi_signal)
 558 {
 559         u8 *resp;
 560         struct ieee802_11_elems elems;
 561         const u8 *ie;
 562         size_t ie_len;
 563         size_t i, resp_len;
 564         int noack;
 565         enum ssid_match_result res;
 566
 567         ie = mgmt->u.probe_req.variable;
 568         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req))
 569                 return;
 570         ie_len = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req));
 571
 572         for (i = 0; hapd->probereq_cb && i < hapd->num_probereq_cb; i++)
 573                 if (hapd->probereq_cb[i].cb(hapd->probereq_cb[i].ctx,
 574                                             mgmt->sa, mgmt->da, mgmt->bssid,
 575                                             ie, ie_len, ssi_signal) > 0)
 576                         return;
 577
 578         if (!hapd->iconf->send_probe_response)
 579                 return;
 580
 581         if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) {
 582                 wpa_printf(MSG_DEBUG, "Could not parse ProbeReq from " MACSTR,
 583                            MAC2STR(mgmt->sa));
 584                 return;
 585         }
 586
 587         if ((!elems.ssid || !elems.supp_rates)) {
 588                 wpa_printf(MSG_DEBUG, "STA " MACSTR " sent probe request "
 589                            "without SSID or supported rates element",
 590                            MAC2STR(mgmt->sa));
 591                 return;
 592         }
 593
 594         /*
 595          * No need to reply if the Probe Request frame was sent on an adjacent
 596          * channel. IEEE Std 802.11-2012 describes this as a requirement for an
 597          * AP with dot11RadioMeasurementActivated set to true, but strictly
 598          * speaking does not allow such ignoring of Probe Request frames if
 599          * dot11RadioMeasurementActivated is false. Anyway, this can help reduce
 600          * number of unnecessary Probe Response frames for cases where the STA
 601          * is less likely to see them (Probe Request frame sent on a
 602          * neighboring, but partially overlapping, channel).
 603          */
 604         if (elems.ds_params &&
 605             hapd->iface->current_mode &&
 606             (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G ||
 607              hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211B) &&
 608             hapd->iconf->channel != elems.ds_params[0]) {
 609                 wpa_printf(MSG_DEBUG,
 610                            "Ignore Probe Request due to DS Params mismatch: chan=%u != ds.chan=%u",
 611                            hapd->iconf->channel, elems.ds_params[0]);
 612                 return;
 613         }
 614
 615 #ifdef CONFIG_P2P
 616         if (hapd->p2p && elems.wps_ie) {
 617                 struct wpabuf *wps;
 618                 wps = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA);
 619                 if (wps && !p2p_group_match_dev_type(hapd->p2p_group, wps)) {
 620                         wpa_printf(MSG_MSGDUMP, "P2P: Ignore Probe Request "
 621                                    "due to mismatch with Requested Device "
 622                                    "Type");
 623                         wpabuf_free(wps);
 624                         return;
 625                 }
 626                 wpabuf_free(wps);
 627         }
 628
 629         if (hapd->p2p && elems.p2p) {
 630                 struct wpabuf *p2p;
 631                 p2p = ieee802_11_vendor_ie_concat(ie, ie_len, P2P_IE_VENDOR_TYPE);
 632                 if (p2p && !p2p_group_match_dev_id(hapd->p2p_group, p2p)) {
 633                         wpa_printf(MSG_MSGDUMP, "P2P: Ignore Probe Request "
 634                                    "due to mismatch with Device ID");
 635                         wpabuf_free(p2p);
 636                         return;
 637                 }
 638                 wpabuf_free(p2p);
 639         }
 640 #endif /* CONFIG_P2P */
 641
 642         if (hapd->conf->ignore_broadcast_ssid && elems.ssid_len == 0 &&
 643             elems.ssid_list_len == 0) {
 644                 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR " for "
 645                            "broadcast SSID ignored", MAC2STR(mgmt->sa));
 646                 return;
 647         }
 648
 649 #ifdef CONFIG_P2P
 650         if ((hapd->conf->p2p & P2P_GROUP_OWNER) &&
 651             elems.ssid_len == P2P_WILDCARD_SSID_LEN &&
 652             os_memcmp(elems.ssid, P2P_WILDCARD_SSID,
 653                       P2P_WILDCARD_SSID_LEN) == 0) {
 654                 /* Process P2P Wildcard SSID like Wildcard SSID */
 655                 elems.ssid_len = 0;
 656         }
 657 #endif /* CONFIG_P2P */
 658
 659         res = ssid_match(hapd, elems.ssid, elems.ssid_len,
 660                          elems.ssid_list, elems.ssid_list_len);
 661         if (res == NO_SSID_MATCH) {
 662                 if (!(mgmt->da[0] & 0x01)) {
 663                         wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR
 664                                    " for foreign SSID '%s' (DA " MACSTR ")%s",
 665                                    MAC2STR(mgmt->sa),
 666                                    wpa_ssid_txt(elems.ssid, elems.ssid_len),
 667                                    MAC2STR(mgmt->da),
 668                                    elems.ssid_list ? " (SSID list)" : "");
 669                 }
 670                 return;
 671         }
 672
 673 #ifdef CONFIG_INTERWORKING
 674         if (hapd->conf->interworking &&
 675             elems.interworking && elems.interworking_len >= 1) {
 676                 u8 ant = elems.interworking[0] & 0x0f;
 677                 if (ant != INTERWORKING_ANT_WILDCARD &&
 678                     ant != hapd->conf->access_network_type) {
 679                         wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR
 680                                    " for mismatching ANT %u ignored",
 681                                    MAC2STR(mgmt->sa), ant);
 682                         return;
 683                 }
 684         }
 685
 686         if (hapd->conf->interworking && elems.interworking &&
 687             (elems.interworking_len == 7 || elems.interworking_len == 9)) {
 688                 const u8 *hessid;
 689                 if (elems.interworking_len == 7)
 690                         hessid = elems.interworking + 1;
 691                 else
 692                         hessid = elems.interworking + 1 + 2;
 693                 if (!is_broadcast_ether_addr(hessid) &&
 694                     os_memcmp(hessid, hapd->conf->hessid, ETH_ALEN) != 0) {
 695                         wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR
 696                                    " for mismatching HESSID " MACSTR
 697                                    " ignored",
 698                                    MAC2STR(mgmt->sa), MAC2STR(hessid));
 699                         return;
 700                 }
 701         }
 702 #endif /* CONFIG_INTERWORKING */
 703
 704 #ifdef CONFIG_P2P
 705         if ((hapd->conf->p2p & P2P_GROUP_OWNER) &&
 706             supp_rates_11b_only(&elems)) {
 707                 /* Indicates support for 11b rates only */
 708                 wpa_printf(MSG_EXCESSIVE, "P2P: Ignore Probe Request from "
 709                            MACSTR " with only 802.11b rates",
 710                            MAC2STR(mgmt->sa));
 711                 return;
 712         }
 713 #endif /* CONFIG_P2P */
 714
 715         /* TODO: verify that supp_rates contains at least one matching rate
 716          * with AP configuration */
 717
 718 #ifdef CONFIG_TESTING_OPTIONS
 719         if (hapd->iconf->ignore_probe_probability > 0.0 &&
 720             drand48() < hapd->iconf->ignore_probe_probability) {
 721                 wpa_printf(MSG_INFO,
 722                            "TESTING: ignoring probe request from " MACSTR,
 723                            MAC2STR(mgmt->sa));
 724                 return;
 725         }
 726 #endif /* CONFIG_TESTING_OPTIONS */
 727
 728         resp = hostapd_gen_probe_resp(hapd, mgmt, elems.p2p != NULL,
 729                                       &resp_len);
 730         if (resp == NULL)
 731                 return;
 732
 733         /*
 734          * If this is a broadcast probe request, apply no ack policy to avoid
 735          * excessive retries.
 736          */
 737         noack = !!(res == WILDCARD_SSID_MATCH &&
 738                    is_broadcast_ether_addr(mgmt->da));
 739
 740         if (hostapd_drv_send_mlme(hapd, resp, resp_len, noack) < 0)
 741                 wpa_printf(MSG_INFO, "handle_probe_req: send failed");
 742
 743         os_free(resp);
 744
 745         wpa_printf(MSG_EXCESSIVE, "STA " MACSTR " sent probe request for %s "
 746                    "SSID", MAC2STR(mgmt->sa),
 747                    elems.ssid_len == 0 ? "broadcast" : "our");
 748 }
 749
 750
 751 static u8 * hostapd_probe_resp_offloads(struct hostapd_data *hapd,
 752                                         size_t *resp_len)
 753 {
 754         /* check probe response offloading caps and print warnings */
 755         if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD))
 756                 return NULL;
 757
 758 #ifdef CONFIG_WPS
 759         if (hapd->conf->wps_state && hapd->wps_probe_resp_ie &&
 760             (!(hapd->iface->probe_resp_offloads &
 761                (WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS |
 762                 WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2))))
 763                 wpa_printf(MSG_WARNING, "Device is trying to offload WPS "
 764                            "Probe Response while not supporting this");
 765 #endif /* CONFIG_WPS */
 766
 767 #ifdef CONFIG_P2P
 768         if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_probe_resp_ie &&
 769             !(hapd->iface->probe_resp_offloads &
 770               WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P))
 771                 wpa_printf(MSG_WARNING, "Device is trying to offload P2P "
 772                            "Probe Response while not supporting this");
 773 #endif  /* CONFIG_P2P */
 774
 775         if (hapd->conf->interworking &&
 776             !(hapd->iface->probe_resp_offloads &
 777               WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING))
 778                 wpa_printf(MSG_WARNING, "Device is trying to offload "
 779                            "Interworking Probe Response while not supporting "
 780                            "this");
 781
 782         /* Generate a Probe Response template for the non-P2P case */
 783         return hostapd_gen_probe_resp(hapd, NULL, 0, resp_len);
 784 }
 785
 786 #endif /* NEED_AP_MLME */
 787
 788
 789 int ieee802_11_build_ap_params(struct hostapd_data *hapd,
 790                                struct wpa_driver_ap_params *params)
 791 {
 792         struct ieee80211_mgmt *head = NULL;
 793         u8 *tail = NULL;
 794         size_t head_len = 0, tail_len = 0;
 795         u8 *resp = NULL;
 796         size_t resp_len = 0;
 797 #ifdef NEED_AP_MLME
 798         u16 capab_info;
 799         u8 *pos, *tailpos;
 800
 801 #define BEACON_HEAD_BUF_SIZE 256
 802 #define BEACON_TAIL_BUF_SIZE 512
 803         head = os_zalloc(BEACON_HEAD_BUF_SIZE);
 804         tail_len = BEACON_TAIL_BUF_SIZE;
 805 #ifdef CONFIG_WPS
 806         if (hapd->conf->wps_state && hapd->wps_beacon_ie)
 807                 tail_len += wpabuf_len(hapd->wps_beacon_ie);
 808 #endif /* CONFIG_WPS */
 809 #ifdef CONFIG_P2P
 810         if (hapd->p2p_beacon_ie)
 811                 tail_len += wpabuf_len(hapd->p2p_beacon_ie);
 812 #endif /* CONFIG_P2P */
 813 #ifdef CONFIG_FST
 814         if (hapd->iface->fst_ies)
 815                 tail_len += wpabuf_len(hapd->iface->fst_ies);
 816 #endif /* CONFIG_FST */
 817         if (hapd->conf->vendor_elements)
 818                 tail_len += wpabuf_len(hapd->conf->vendor_elements);
 819
 820 #ifdef CONFIG_IEEE80211AC
 821         if (hapd->conf->vendor_vht) {
 822                 tail_len += 5 + 2 + sizeof(struct ieee80211_vht_capabilities) +
 823                         2 + sizeof(struct ieee80211_vht_operation);
 824         }
 825 #endif /* CONFIG_IEEE80211AC */
 826
 827         tailpos = tail = os_malloc(tail_len);
 828         if (head == NULL || tail == NULL) {
 829                 wpa_printf(MSG_ERROR, "Failed to set beacon data");
 830                 os_free(head);
 831                 os_free(tail);
 832                 return -1;
 833         }
 834
 835         head->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 836                                            WLAN_FC_STYPE_BEACON);
 837         head->duration = host_to_le16(0);
 838         os_memset(head->da, 0xff, ETH_ALEN);
 839
 840         os_memcpy(head->sa, hapd->own_addr, ETH_ALEN);
 841         os_memcpy(head->bssid, hapd->own_addr, ETH_ALEN);
 842         head->u.beacon.beacon_int =
 843                 host_to_le16(hapd->iconf->beacon_int);
 844
 845         /* hardware or low-level driver will setup seq_ctrl and timestamp */
 846         capab_info = hostapd_own_capab_info(hapd);
 847         head->u.beacon.capab_info = host_to_le16(capab_info);
 848         pos = &head->u.beacon.variable[0];
 849
 850         /* SSID */
 851         *pos++ = WLAN_EID_SSID;
 852         if (hapd->conf->ignore_broadcast_ssid == 2) {
 853                 /* clear the data, but keep the correct length of the SSID */
 854                 *pos++ = hapd->conf->ssid.ssid_len;
 855                 os_memset(pos, 0, hapd->conf->ssid.ssid_len);
 856                 pos += hapd->conf->ssid.ssid_len;
 857         } else if (hapd->conf->ignore_broadcast_ssid) {
 858                 *pos++ = 0; /* empty SSID */
 859         } else {
 860                 *pos++ = hapd->conf->ssid.ssid_len;
 861                 os_memcpy(pos, hapd->conf->ssid.ssid,
 862                           hapd->conf->ssid.ssid_len);
 863                 pos += hapd->conf->ssid.ssid_len;
 864         }
 865
 866         /* Supported rates */
 867         pos = hostapd_eid_supp_rates(hapd, pos);
 868
 869         /* DS Params */
 870         pos = hostapd_eid_ds_params(hapd, pos);
 871
 872         head_len = pos - (u8 *) head;
 873
 874         tailpos = hostapd_eid_country(hapd, tailpos,
 875                                       tail + BEACON_TAIL_BUF_SIZE - tailpos);
 876
 877         /* Power Constraint element */
 878         tailpos = hostapd_eid_pwr_constraint(hapd, tailpos);
 879
 880         /* ERP Information element */
 881         tailpos = hostapd_eid_erp_info(hapd, tailpos);
 882
 883         /* Extended supported rates */
 884         tailpos = hostapd_eid_ext_supp_rates(hapd, tailpos);
 885
 886         /* RSN, MDIE, WPA */
 887         tailpos = hostapd_eid_wpa(hapd, tailpos, tail + BEACON_TAIL_BUF_SIZE -
 888                                   tailpos);
 889
 890         tailpos = hostapd_eid_rm_enabled_capab(hapd, tailpos,
 891                                                tail + BEACON_TAIL_BUF_SIZE -
 892                                                tailpos);
 893
 894         tailpos = hostapd_eid_bss_load(hapd, tailpos,
 895                                        tail + BEACON_TAIL_BUF_SIZE - tailpos);
 896
 897 #ifdef CONFIG_IEEE80211N
 898         tailpos = hostapd_eid_ht_capabilities(hapd, tailpos);
 899         tailpos = hostapd_eid_ht_operation(hapd, tailpos);
 900 #endif /* CONFIG_IEEE80211N */
 901
 902         tailpos = hostapd_eid_ext_capab(hapd, tailpos);
 903
 904         /*
 905          * TODO: Time Advertisement element should only be included in some
 906          * DTIM Beacon frames.
 907          */
 908         tailpos = hostapd_eid_time_adv(hapd, tailpos);
 909
 910         tailpos = hostapd_eid_interworking(hapd, tailpos);
 911         tailpos = hostapd_eid_adv_proto(hapd, tailpos);
 912         tailpos = hostapd_eid_roaming_consortium(hapd, tailpos);
 913         tailpos = hostapd_add_csa_elems(hapd, tailpos, tail,
 914                                         &hapd->cs_c_off_beacon);
 915
 916 #ifdef CONFIG_FST
 917         if (hapd->iface->fst_ies) {
 918                 os_memcpy(tailpos, wpabuf_head(hapd->iface->fst_ies),
 919                           wpabuf_len(hapd->iface->fst_ies));
 920                 tailpos += wpabuf_len(hapd->iface->fst_ies);
 921         }
 922 #endif /* CONFIG_FST */
 923
 924 #ifdef CONFIG_IEEE80211AC
 925         if (hapd->iconf->ieee80211ac && !hapd->conf->disable_11ac) {
 926                 tailpos = hostapd_eid_vht_capabilities(hapd, tailpos);
 927                 tailpos = hostapd_eid_vht_operation(hapd, tailpos);
 928         }
 929         if (hapd->conf->vendor_vht)
 930                 tailpos = hostapd_eid_vendor_vht(hapd, tailpos);
 931 #endif /* CONFIG_IEEE80211AC */
 932
 933         /* Wi-Fi Alliance WMM */
 934         tailpos = hostapd_eid_wmm(hapd, tailpos);
 935
 936 #ifdef CONFIG_WPS
 937         if (hapd->conf->wps_state && hapd->wps_beacon_ie) {
 938                 os_memcpy(tailpos, wpabuf_head(hapd->wps_beacon_ie),
 939                           wpabuf_len(hapd->wps_beacon_ie));
 940                 tailpos += wpabuf_len(hapd->wps_beacon_ie);
 941         }
 942 #endif /* CONFIG_WPS */
 943
 944 #ifdef CONFIG_P2P
 945         if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_beacon_ie) {
 946                 os_memcpy(tailpos, wpabuf_head(hapd->p2p_beacon_ie),
 947                           wpabuf_len(hapd->p2p_beacon_ie));
 948                 tailpos += wpabuf_len(hapd->p2p_beacon_ie);
 949         }
 950 #endif /* CONFIG_P2P */
 951 #ifdef CONFIG_P2P_MANAGER
 952         if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) ==
 953             P2P_MANAGE)
 954                 tailpos = hostapd_eid_p2p_manage(hapd, tailpos);
 955 #endif /* CONFIG_P2P_MANAGER */
 956
 957 #ifdef CONFIG_HS20
 958         tailpos = hostapd_eid_hs20_indication(hapd, tailpos);
 959         tailpos = hostapd_eid_osen(hapd, tailpos);
 960 #endif /* CONFIG_HS20 */
 961
 962         if (hapd->conf->vendor_elements) {
 963                 os_memcpy(tailpos, wpabuf_head(hapd->conf->vendor_elements),
 964                           wpabuf_len(hapd->conf->vendor_elements));
 965                 tailpos += wpabuf_len(hapd->conf->vendor_elements);
 966         }
 967
 968         tail_len = tailpos > tail ? tailpos - tail : 0;
 969
 970         resp = hostapd_probe_resp_offloads(hapd, &resp_len);
 971 #endif /* NEED_AP_MLME */
 972
 973         os_memset(params, 0, sizeof(*params));
 974         params->head = (u8 *) head;
 975         params->head_len = head_len;
 976         params->tail = tail;
 977         params->tail_len = tail_len;
 978         params->proberesp = resp;
 979         params->proberesp_len = resp_len;
 980         params->dtim_period = hapd->conf->dtim_period;
 981         params->beacon_int = hapd->iconf->beacon_int;
 982         params->basic_rates = hapd->iface->basic_rates;
 983         params->ssid = hapd->conf->ssid.ssid;
 984         params->ssid_len = hapd->conf->ssid.ssid_len;
 985         if ((hapd->conf->wpa & (WPA_PROTO_WPA | WPA_PROTO_RSN)) ==
 986             (WPA_PROTO_WPA | WPA_PROTO_RSN))
 987                 params->pairwise_ciphers = hapd->conf->wpa_pairwise |
 988                         hapd->conf->rsn_pairwise;
 989         else if (hapd->conf->wpa & WPA_PROTO_RSN)
 990                 params->pairwise_ciphers = hapd->conf->rsn_pairwise;
 991         else if (hapd->conf->wpa & WPA_PROTO_WPA)
 992                 params->pairwise_ciphers = hapd->conf->wpa_pairwise;
 993         params->group_cipher = hapd->conf->wpa_group;
 994         params->key_mgmt_suites = hapd->conf->wpa_key_mgmt;
 995         params->auth_algs = hapd->conf->auth_algs;
 996         params->wpa_version = hapd->conf->wpa;
 997         params->privacy = hapd->conf->ssid.wep.keys_set || hapd->conf->wpa ||
 998                 (hapd->conf->ieee802_1x &&
 999                  (hapd->conf->default_wep_key_len ||
1000                   hapd->conf->individual_wep_key_len));
1001         switch (hapd->conf->ignore_broadcast_ssid) {
1002         case 0:
1003                 params->hide_ssid = NO_SSID_HIDING;
1004                 break;
1005         case 1:
1006                 params->hide_ssid = HIDDEN_SSID_ZERO_LEN;
1007                 break;
1008         case 2:
1009                 params->hide_ssid = HIDDEN_SSID_ZERO_CONTENTS;
1010                 break;
1011         }
1012         params->isolate = hapd->conf->isolate;
1013         params->smps_mode = hapd->iconf->ht_capab & HT_CAP_INFO_SMPS_MASK;
1014 #ifdef NEED_AP_MLME
1015         params->cts_protect = !!(ieee802_11_erp_info(hapd) &
1016                                 ERP_INFO_USE_PROTECTION);
1017         params->preamble = hapd->iface->num_sta_no_short_preamble == 0 &&
1018                 hapd->iconf->preamble == SHORT_PREAMBLE;
1019         if (hapd->iface->current_mode &&
1020             hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
1021                 params->short_slot_time =
1022                         hapd->iface->num_sta_no_short_slot_time > 0 ? 0 : 1;
1023         else
1024                 params->short_slot_time = -1;
1025         if (!hapd->iconf->ieee80211n || hapd->conf->disable_11n)
1026                 params->ht_opmode = -1;
1027         else
1028                 params->ht_opmode = hapd->iface->ht_op_mode;
1029 #endif /* NEED_AP_MLME */
1030         params->interworking = hapd->conf->interworking;
1031         if (hapd->conf->interworking &&
1032             !is_zero_ether_addr(hapd->conf->hessid))
1033                 params->hessid = hapd->conf->hessid;
1034         params->access_network_type = hapd->conf->access_network_type;
1035         params->ap_max_inactivity = hapd->conf->ap_max_inactivity;
1036 #ifdef CONFIG_P2P
1037         params->p2p_go_ctwindow = hapd->iconf->p2p_go_ctwindow;
1038 #endif /* CONFIG_P2P */
1039 #ifdef CONFIG_HS20
1040         params->disable_dgaf = hapd->conf->disable_dgaf;
1041         if (hapd->conf->osen) {
1042                 params->privacy = 1;
1043                 params->osen = 1;
1044         }
1045 #endif /* CONFIG_HS20 */
1046         return 0;
1047 }
1048
1049
1050 void ieee802_11_free_ap_params(struct wpa_driver_ap_params *params)
1051 {
1052         os_free(params->tail);
1053         params->tail = NULL;
1054         os_free(params->head);
1055         params->head = NULL;
1056         os_free(params->proberesp);
1057         params->proberesp = NULL;
1058 }
1059
1060
1061 int ieee802_11_set_beacon(struct hostapd_data *hapd)
1062 {
1063         struct wpa_driver_ap_params params;
1064         struct hostapd_freq_params freq;
1065         struct hostapd_iface *iface = hapd->iface;
1066         struct hostapd_config *iconf = iface->conf;
1067         struct wpabuf *beacon, *proberesp, *assocresp;
1068         int res, ret = -1;
1069
1070         if (hapd->csa_in_progress) {
1071                 wpa_printf(MSG_ERROR, "Cannot set beacons during CSA period");
1072                 return -1;
1073         }
1074
1075         hapd->beacon_set_done = 1;
1076
1077         if (ieee802_11_build_ap_params(hapd, &params) < 0)
1078                 return -1;
1079
1080         if (hostapd_build_ap_extra_ies(hapd, &beacon, &proberesp, &assocresp) <
1081             0)
1082                 goto fail;
1083
1084         params.beacon_ies = beacon;
1085         params.proberesp_ies = proberesp;
1086         params.assocresp_ies = assocresp;
1087         params.reenable = hapd->reenable_beacon;
1088         hapd->reenable_beacon = 0;
1089
1090         if (iface->current_mode &&
1091             hostapd_set_freq_params(&freq, iconf->hw_mode, iface->freq,
1092                                     iconf->channel, iconf->ieee80211n,
1093                                     iconf->ieee80211ac,
1094                                     iconf->secondary_channel,
1095                                     iconf->vht_oper_chwidth,
1096                                     iconf->vht_oper_centr_freq_seg0_idx,
1097                                     iconf->vht_oper_centr_freq_seg1_idx,
1098                                     iface->current_mode->vht_capab) == 0)
1099                 params.freq = &freq;
1100
1101         res = hostapd_drv_set_ap(hapd, &params);
1102         hostapd_free_ap_extra_ies(hapd, beacon, proberesp, assocresp);
1103         if (res)
1104                 wpa_printf(MSG_ERROR, "Failed to set beacon parameters");
1105         else
1106                 ret = 0;
1107 fail:
1108         ieee802_11_free_ap_params(&params);
1109         return ret;
1110 }
1111
1112
1113 int ieee802_11_set_beacons(struct hostapd_iface *iface)
1114 {
1115         size_t i;
1116         int ret = 0;
1117
1118         for (i = 0; i < iface->num_bss; i++) {
1119                 if (iface->bss[i]->started &&
1120                     ieee802_11_set_beacon(iface->bss[i]) < 0)
1121                         ret = -1;
1122         }
1123
1124         return ret;
1125 }
1126
1127
1128 /* only update beacons if started */
1129 int ieee802_11_update_beacons(struct hostapd_iface *iface)
1130 {
1131         size_t i;
1132         int ret = 0;
1133
1134         for (i = 0; i < iface->num_bss; i++) {
1135                 if (iface->bss[i]->beacon_set_done && iface->bss[i]->started &&
1136                     ieee802_11_set_beacon(iface->bss[i]) < 0)
1137                         ret = -1;
1138         }
1139
1140         return ret;
1141 }
1142
1143 #endif /* CONFIG_NATIVE_WINDOWS */