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) 2008-2009, Jouni Malinen <j@w1.fi>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  *
  11  * Alternatively, this software may be distributed under the terms of BSD
  12  * license.
  13  *
  14  * See README and COPYING for more details.
  15  */
  16
  17 #include "utils/includes.h"
  18
  19 #ifndef CONFIG_NATIVE_WINDOWS
  20
  21 #include "utils/common.h"
  22 #include "common/ieee802_11_defs.h"
  23 #include "common/ieee802_11_common.h"
  24 #include "drivers/driver.h"
  25 #include "wps/wps_defs.h"
  26 #include "p2p/p2p.h"
  27 #include "hostapd.h"
  28 #include "ieee802_11.h"
  29 #include "wpa_auth.h"
  30 #include "wmm.h"
  31 #include "ap_config.h"
  32 #include "sta_info.h"
  33 #include "p2p_hostapd.h"
  34 #include "ap_drv_ops.h"
  35 #include "beacon.h"
  36
  37
  38 #ifdef NEED_AP_MLME
  39
  40 static u8 ieee802_11_erp_info(struct hostapd_data *hapd)
  41 {
  42         u8 erp = 0;
  43
  44         if (hapd->iface->current_mode == NULL ||
  45             hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G)
  46                 return 0;
  47
  48         if (hapd->iface->olbc)
  49                 erp |= ERP_INFO_USE_PROTECTION;
  50         if (hapd->iface->num_sta_non_erp > 0) {
  51                 erp |= ERP_INFO_NON_ERP_PRESENT |
  52                         ERP_INFO_USE_PROTECTION;
  53         }
  54         if (hapd->iface->num_sta_no_short_preamble > 0 ||
  55             hapd->iconf->preamble == LONG_PREAMBLE)
  56                 erp |= ERP_INFO_BARKER_PREAMBLE_MODE;
  57
  58         return erp;
  59 }
  60
  61
  62 static u8 * hostapd_eid_ds_params(struct hostapd_data *hapd, u8 *eid)
  63 {
  64         *eid++ = WLAN_EID_DS_PARAMS;
  65         *eid++ = 1;
  66         *eid++ = hapd->iconf->channel;
  67         return eid;
  68 }
  69
  70
  71 static u8 * hostapd_eid_erp_info(struct hostapd_data *hapd, u8 *eid)
  72 {
  73         if (hapd->iface->current_mode == NULL ||
  74             hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G)
  75                 return eid;
  76
  77         /* Set NonERP_present and use_protection bits if there
  78          * are any associated NonERP stations. */
  79         /* TODO: use_protection bit can be set to zero even if
  80          * there are NonERP stations present. This optimization
  81          * might be useful if NonERP stations are "quiet".
  82          * See 802.11g/D6 E-1 for recommended practice.
  83          * In addition, Non ERP present might be set, if AP detects Non ERP
  84          * operation on other APs. */
  85
  86         /* Add ERP Information element */
  87         *eid++ = WLAN_EID_ERP_INFO;
  88         *eid++ = 1;
  89         *eid++ = ieee802_11_erp_info(hapd);
  90
  91         return eid;
  92 }
  93
  94
  95 static u8 * hostapd_eid_country_add(u8 *pos, u8 *end, int chan_spacing,
  96                                     struct hostapd_channel_data *start,
  97                                     struct hostapd_channel_data *prev)
  98 {
  99         if (end - pos < 3)
 100                 return pos;
 101
 102         /* first channel number */
 103         *pos++ = start->chan;
 104         /* number of channels */
 105         *pos++ = (prev->chan - start->chan) / chan_spacing + 1;
 106         /* maximum transmit power level */
 107         *pos++ = start->max_tx_power;
 108
 109         return pos;
 110 }
 111
 112
 113 static u8 * hostapd_eid_country(struct hostapd_data *hapd, u8 *eid,
 114                                 int max_len)
 115 {
 116         u8 *pos = eid;
 117         u8 *end = eid + max_len;
 118         int i;
 119         struct hostapd_hw_modes *mode;
 120         struct hostapd_channel_data *start, *prev;
 121         int chan_spacing = 1;
 122
 123         if (!hapd->iconf->ieee80211d || max_len < 6 ||
 124             hapd->iface->current_mode == NULL)
 125                 return eid;
 126
 127         *pos++ = WLAN_EID_COUNTRY;
 128         pos++; /* length will be set later */
 129         os_memcpy(pos, hapd->iconf->country, 3); /* e.g., 'US ' */
 130         pos += 3;
 131
 132         mode = hapd->iface->current_mode;
 133         if (mode->mode == HOSTAPD_MODE_IEEE80211A)
 134                 chan_spacing = 4;
 135
 136         start = prev = NULL;
 137         for (i = 0; i < mode->num_channels; i++) {
 138                 struct hostapd_channel_data *chan = &mode->channels[i];
 139                 if (chan->flag & HOSTAPD_CHAN_DISABLED)
 140                         continue;
 141                 if (start && prev &&
 142                     prev->chan + chan_spacing == chan->chan &&
 143                     start->max_tx_power == chan->max_tx_power) {
 144                         prev = chan;
 145                         continue; /* can use same entry */
 146                 }
 147
 148                 if (start) {
 149                         pos = hostapd_eid_country_add(pos, end, chan_spacing,
 150                                                       start, prev);
 151                         start = NULL;
 152                 }
 153
 154                 /* Start new group */
 155                 start = prev = chan;
 156         }
 157
 158         if (start) {
 159                 pos = hostapd_eid_country_add(pos, end, chan_spacing,
 160                                               start, prev);
 161         }
 162
 163         if ((pos - eid) & 1) {
 164                 if (end - pos < 1)
 165                         return eid;
 166                 *pos++ = 0; /* pad for 16-bit alignment */
 167         }
 168
 169         eid[1] = (pos - eid) - 2;
 170
 171         return pos;
 172 }
 173
 174
 175 static u8 * hostapd_eid_wpa(struct hostapd_data *hapd, u8 *eid, size_t len)
 176 {
 177         const u8 *ie;
 178         size_t ielen;
 179
 180         ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &ielen);
 181         if (ie == NULL || ielen > len)
 182                 return eid;
 183
 184         os_memcpy(eid, ie, ielen);
 185         return eid + ielen;
 186 }
 187
 188
 189 void handle_probe_req(struct hostapd_data *hapd,
 190                       const struct ieee80211_mgmt *mgmt, size_t len)
 191 {
 192         struct ieee80211_mgmt *resp;
 193         struct ieee802_11_elems elems;
 194         char *ssid;
 195         u8 *pos, *epos;
 196         const u8 *ie;
 197         size_t ssid_len, ie_len;
 198         struct sta_info *sta = NULL;
 199         size_t buflen;
 200         size_t i;
 201
 202         ie = mgmt->u.probe_req.variable;
 203         if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req))
 204                 return;
 205         ie_len = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req));
 206
 207         for (i = 0; hapd->probereq_cb && i < hapd->num_probereq_cb; i++)
 208                 if (hapd->probereq_cb[i].cb(hapd->probereq_cb[i].ctx,
 209                                             mgmt->sa, mgmt->da, mgmt->bssid,
 210                                             ie, ie_len) > 0)
 211                         return;
 212
 213         if (!hapd->iconf->send_probe_response)
 214                 return;
 215
 216         if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) {
 217                 wpa_printf(MSG_DEBUG, "Could not parse ProbeReq from " MACSTR,
 218                            MAC2STR(mgmt->sa));
 219                 return;
 220         }
 221
 222         ssid = NULL;
 223         ssid_len = 0;
 224
 225         if ((!elems.ssid || !elems.supp_rates)) {
 226                 wpa_printf(MSG_DEBUG, "STA " MACSTR " sent probe request "
 227                            "without SSID or supported rates element",
 228                            MAC2STR(mgmt->sa));
 229                 return;
 230         }
 231
 232 #ifdef CONFIG_P2P
 233         if (hapd->p2p && elems.wps_ie) {
 234                 struct wpabuf *wps;
 235                 wps = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA);
 236                 if (wps && !p2p_group_match_dev_type(hapd->p2p_group, wps)) {
 237                         wpa_printf(MSG_MSGDUMP, "P2P: Ignore Probe Request "
 238                                    "due to mismatch with Requested Device "
 239                                    "Type");
 240                         wpabuf_free(wps);
 241                         return;
 242                 }
 243                 wpabuf_free(wps);
 244         }
 245 #endif /* CONFIG_P2P */
 246
 247         if (hapd->conf->ignore_broadcast_ssid && elems.ssid_len == 0) {
 248                 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR " for "
 249                            "broadcast SSID ignored", MAC2STR(mgmt->sa));
 250                 return;
 251         }
 252
 253         sta = ap_get_sta(hapd, mgmt->sa);
 254
 255 #ifdef CONFIG_P2P
 256         if ((hapd->conf->p2p & P2P_GROUP_OWNER) &&
 257             elems.ssid_len == P2P_WILDCARD_SSID_LEN &&
 258             os_memcmp(elems.ssid, P2P_WILDCARD_SSID,
 259                       P2P_WILDCARD_SSID_LEN) == 0) {
 260                 /* Process P2P Wildcard SSID like Wildcard SSID */
 261                 elems.ssid_len = 0;
 262         }
 263 #endif /* CONFIG_P2P */
 264
 265         if (elems.ssid_len == 0 ||
 266             (elems.ssid_len == hapd->conf->ssid.ssid_len &&
 267              os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) ==
 268              0)) {
 269                 ssid = hapd->conf->ssid.ssid;
 270                 ssid_len = hapd->conf->ssid.ssid_len;
 271                 if (sta)
 272                         sta->ssid_probe = &hapd->conf->ssid;
 273         }
 274
 275         if (!ssid) {
 276                 if (!(mgmt->da[0] & 0x01)) {
 277                         char ssid_txt[33];
 278                         ieee802_11_print_ssid(ssid_txt, elems.ssid,
 279                                               elems.ssid_len);
 280                         wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR
 281                                    " for foreign SSID '%s' (DA " MACSTR ")",
 282                                    MAC2STR(mgmt->sa), ssid_txt,
 283                                    MAC2STR(mgmt->da));
 284                 }
 285                 return;
 286         }
 287
 288 #ifdef CONFIG_INTERWORKING
 289         if (elems.interworking && elems.interworking_len >= 1) {
 290                 u8 ant = elems.interworking[0] & 0x0f;
 291                 if (ant != INTERWORKING_ANT_WILDCARD &&
 292                     ant != hapd->conf->access_network_type) {
 293                         wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR
 294                                    " for mismatching ANT %u ignored",
 295                                    MAC2STR(mgmt->sa), ant);
 296                         return;
 297                 }
 298         }
 299
 300         if (elems.interworking &&
 301             (elems.interworking_len == 7 || elems.interworking_len == 9)) {
 302                 const u8 *hessid;
 303                 if (elems.interworking_len == 7)
 304                         hessid = elems.interworking + 1;
 305                 else
 306                         hessid = elems.interworking + 1 + 2;
 307                 if (!is_broadcast_ether_addr(hessid) &&
 308                     os_memcmp(hessid, hapd->conf->hessid, ETH_ALEN) != 0) {
 309                         wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR
 310                                    " for mismatching HESSID " MACSTR
 311                                    " ignored",
 312                                    MAC2STR(mgmt->sa), MAC2STR(hessid));
 313                         return;
 314                 }
 315         }
 316 #endif /* CONFIG_INTERWORKING */
 317
 318         /* TODO: verify that supp_rates contains at least one matching rate
 319          * with AP configuration */
 320 #define MAX_PROBERESP_LEN 768
 321         buflen = MAX_PROBERESP_LEN;
 322 #ifdef CONFIG_WPS
 323         if (hapd->wps_probe_resp_ie)
 324                 buflen += wpabuf_len(hapd->wps_probe_resp_ie);
 325 #endif /* CONFIG_WPS */
 326 #ifdef CONFIG_P2P
 327         if (hapd->p2p_probe_resp_ie)
 328                 buflen += wpabuf_len(hapd->p2p_probe_resp_ie);
 329 #endif /* CONFIG_P2P */
 330         resp = os_zalloc(buflen);
 331         if (resp == NULL)
 332                 return;
 333         epos = ((u8 *) resp) + MAX_PROBERESP_LEN;
 334
 335         resp->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 336                                            WLAN_FC_STYPE_PROBE_RESP);
 337         os_memcpy(resp->da, mgmt->sa, ETH_ALEN);
 338         os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN);
 339
 340         os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN);
 341         resp->u.probe_resp.beacon_int =
 342                 host_to_le16(hapd->iconf->beacon_int);
 343
 344         /* hardware or low-level driver will setup seq_ctrl and timestamp */
 345         resp->u.probe_resp.capab_info =
 346                 host_to_le16(hostapd_own_capab_info(hapd, sta, 1));
 347
 348         pos = resp->u.probe_resp.variable;
 349         *pos++ = WLAN_EID_SSID;
 350         *pos++ = ssid_len;
 351         os_memcpy(pos, ssid, ssid_len);
 352         pos += ssid_len;
 353
 354         /* Supported rates */
 355         pos = hostapd_eid_supp_rates(hapd, pos);
 356
 357         /* DS Params */
 358         pos = hostapd_eid_ds_params(hapd, pos);
 359
 360         pos = hostapd_eid_country(hapd, pos, epos - pos);
 361
 362         /* ERP Information element */
 363         pos = hostapd_eid_erp_info(hapd, pos);
 364
 365         /* Extended supported rates */
 366         pos = hostapd_eid_ext_supp_rates(hapd, pos);
 367
 368         /* RSN, MDIE, WPA */
 369         pos = hostapd_eid_wpa(hapd, pos, epos - pos);
 370
 371 #ifdef CONFIG_IEEE80211N
 372         pos = hostapd_eid_ht_capabilities(hapd, pos);
 373         pos = hostapd_eid_ht_operation(hapd, pos);
 374 #endif /* CONFIG_IEEE80211N */
 375
 376         pos = hostapd_eid_ext_capab(hapd, pos);
 377
 378         pos = hostapd_eid_time_adv(hapd, pos);
 379         pos = hostapd_eid_time_zone(hapd, pos);
 380
 381         pos = hostapd_eid_interworking(hapd, pos);
 382         pos = hostapd_eid_adv_proto(hapd, pos);
 383         pos = hostapd_eid_roaming_consortium(hapd, pos);
 384
 385         /* Wi-Fi Alliance WMM */
 386         pos = hostapd_eid_wmm(hapd, pos);
 387
 388 #ifdef CONFIG_WPS
 389         if (hapd->conf->wps_state && hapd->wps_probe_resp_ie) {
 390                 os_memcpy(pos, wpabuf_head(hapd->wps_probe_resp_ie),
 391                           wpabuf_len(hapd->wps_probe_resp_ie));
 392                 pos += wpabuf_len(hapd->wps_probe_resp_ie);
 393         }
 394 #endif /* CONFIG_WPS */
 395
 396 #ifdef CONFIG_P2P
 397         if ((hapd->conf->p2p & P2P_ENABLED) && elems.p2p &&
 398             hapd->p2p_probe_resp_ie) {
 399                 os_memcpy(pos, wpabuf_head(hapd->p2p_probe_resp_ie),
 400                           wpabuf_len(hapd->p2p_probe_resp_ie));
 401                 pos += wpabuf_len(hapd->p2p_probe_resp_ie);
 402         }
 403 #endif /* CONFIG_P2P */
 404 #ifdef CONFIG_P2P_MANAGER
 405         if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) ==
 406             P2P_MANAGE)
 407                 pos = hostapd_eid_p2p_manage(hapd, pos);
 408 #endif /* CONFIG_P2P_MANAGER */
 409
 410         if (hostapd_drv_send_mlme(hapd, resp, pos - (u8 *) resp, 0) < 0)
 411                 perror("handle_probe_req: send");
 412
 413         os_free(resp);
 414
 415         wpa_printf(MSG_EXCESSIVE, "STA " MACSTR " sent probe request for %s "
 416                    "SSID", MAC2STR(mgmt->sa),
 417                    elems.ssid_len == 0 ? "broadcast" : "our");
 418 }
 419
 420 #endif /* NEED_AP_MLME */
 421
 422
 423 void ieee802_11_set_beacon(struct hostapd_data *hapd)
 424 {
 425         struct ieee80211_mgmt *head = NULL;
 426         u8 *tail = NULL;
 427         size_t head_len = 0, tail_len = 0;
 428         struct wpa_driver_ap_params params;
 429         struct wpabuf *beacon, *proberesp, *assocresp;
 430 #ifdef NEED_AP_MLME
 431         u16 capab_info;
 432         u8 *pos, *tailpos;
 433 #endif /* NEED_AP_MLME */
 434
 435         hapd->beacon_set_done = 1;
 436
 437 #ifdef NEED_AP_MLME
 438
 439 #define BEACON_HEAD_BUF_SIZE 256
 440 #define BEACON_TAIL_BUF_SIZE 512
 441         head = os_zalloc(BEACON_HEAD_BUF_SIZE);
 442         tail_len = BEACON_TAIL_BUF_SIZE;
 443 #ifdef CONFIG_WPS
 444         if (hapd->conf->wps_state && hapd->wps_beacon_ie)
 445                 tail_len += wpabuf_len(hapd->wps_beacon_ie);
 446 #endif /* CONFIG_WPS */
 447 #ifdef CONFIG_P2P
 448         if (hapd->p2p_beacon_ie)
 449                 tail_len += wpabuf_len(hapd->p2p_beacon_ie);
 450 #endif /* CONFIG_P2P */
 451         tailpos = tail = os_malloc(tail_len);
 452         if (head == NULL || tail == NULL) {
 453                 wpa_printf(MSG_ERROR, "Failed to set beacon data");
 454                 os_free(head);
 455                 os_free(tail);
 456                 return;
 457         }
 458
 459         head->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
 460                                            WLAN_FC_STYPE_BEACON);
 461         head->duration = host_to_le16(0);
 462         os_memset(head->da, 0xff, ETH_ALEN);
 463
 464         os_memcpy(head->sa, hapd->own_addr, ETH_ALEN);
 465         os_memcpy(head->bssid, hapd->own_addr, ETH_ALEN);
 466         head->u.beacon.beacon_int =
 467                 host_to_le16(hapd->iconf->beacon_int);
 468
 469         /* hardware or low-level driver will setup seq_ctrl and timestamp */
 470         capab_info = hostapd_own_capab_info(hapd, NULL, 0);
 471         head->u.beacon.capab_info = host_to_le16(capab_info);
 472         pos = &head->u.beacon.variable[0];
 473
 474         /* SSID */
 475         *pos++ = WLAN_EID_SSID;
 476         if (hapd->conf->ignore_broadcast_ssid == 2) {
 477                 /* clear the data, but keep the correct length of the SSID */
 478                 *pos++ = hapd->conf->ssid.ssid_len;
 479                 os_memset(pos, 0, hapd->conf->ssid.ssid_len);
 480                 pos += hapd->conf->ssid.ssid_len;
 481         } else if (hapd->conf->ignore_broadcast_ssid) {
 482                 *pos++ = 0; /* empty SSID */
 483         } else {
 484                 *pos++ = hapd->conf->ssid.ssid_len;
 485                 os_memcpy(pos, hapd->conf->ssid.ssid,
 486                           hapd->conf->ssid.ssid_len);
 487                 pos += hapd->conf->ssid.ssid_len;
 488         }
 489
 490         /* Supported rates */
 491         pos = hostapd_eid_supp_rates(hapd, pos);
 492
 493         /* DS Params */
 494         pos = hostapd_eid_ds_params(hapd, pos);
 495
 496         head_len = pos - (u8 *) head;
 497
 498         tailpos = hostapd_eid_country(hapd, tailpos,
 499                                       tail + BEACON_TAIL_BUF_SIZE - tailpos);
 500
 501         /* ERP Information element */
 502         tailpos = hostapd_eid_erp_info(hapd, tailpos);
 503
 504         /* Extended supported rates */
 505         tailpos = hostapd_eid_ext_supp_rates(hapd, tailpos);
 506
 507         /* RSN, MDIE, WPA */
 508         tailpos = hostapd_eid_wpa(hapd, tailpos, tail + BEACON_TAIL_BUF_SIZE -
 509                                   tailpos);
 510
 511 #ifdef CONFIG_IEEE80211N
 512         tailpos = hostapd_eid_ht_capabilities(hapd, tailpos);
 513         tailpos = hostapd_eid_ht_operation(hapd, tailpos);
 514 #endif /* CONFIG_IEEE80211N */
 515
 516         tailpos = hostapd_eid_ext_capab(hapd, tailpos);
 517
 518         /*
 519          * TODO: Time Advertisement element should only be included in some
 520          * DTIM Beacon frames.
 521          */
 522         tailpos = hostapd_eid_time_adv(hapd, tailpos);
 523
 524         tailpos = hostapd_eid_interworking(hapd, tailpos);
 525         tailpos = hostapd_eid_adv_proto(hapd, tailpos);
 526         tailpos = hostapd_eid_roaming_consortium(hapd, tailpos);
 527
 528         /* Wi-Fi Alliance WMM */
 529         tailpos = hostapd_eid_wmm(hapd, tailpos);
 530
 531 #ifdef CONFIG_WPS
 532         if (hapd->conf->wps_state && hapd->wps_beacon_ie) {
 533                 os_memcpy(tailpos, wpabuf_head(hapd->wps_beacon_ie),
 534                           wpabuf_len(hapd->wps_beacon_ie));
 535                 tailpos += wpabuf_len(hapd->wps_beacon_ie);
 536         }
 537 #endif /* CONFIG_WPS */
 538
 539 #ifdef CONFIG_P2P
 540         if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_beacon_ie) {
 541                 os_memcpy(tailpos, wpabuf_head(hapd->p2p_beacon_ie),
 542                           wpabuf_len(hapd->p2p_beacon_ie));
 543                 tailpos += wpabuf_len(hapd->p2p_beacon_ie);
 544         }
 545 #endif /* CONFIG_P2P */
 546 #ifdef CONFIG_P2P_MANAGER
 547         if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) ==
 548             P2P_MANAGE)
 549                 tailpos = hostapd_eid_p2p_manage(hapd, tailpos);
 550 #endif /* CONFIG_P2P_MANAGER */
 551
 552         tail_len = tailpos > tail ? tailpos - tail : 0;
 553
 554 #endif /* NEED_AP_MLME */
 555
 556         os_memset(&params, 0, sizeof(params));
 557         params.head = (u8 *) head;
 558         params.head_len = head_len;
 559         params.tail = tail;
 560         params.tail_len = tail_len;
 561         params.dtim_period = hapd->conf->dtim_period;
 562         params.beacon_int = hapd->iconf->beacon_int;
 563         params.ssid = (u8 *) hapd->conf->ssid.ssid;
 564         params.ssid_len = hapd->conf->ssid.ssid_len;
 565         params.pairwise_ciphers = hapd->conf->rsn_pairwise ?
 566                 hapd->conf->rsn_pairwise : hapd->conf->wpa_pairwise;
 567         params.group_cipher = hapd->conf->wpa_group;
 568         params.key_mgmt_suites = hapd->conf->wpa_key_mgmt;
 569         params.auth_algs = hapd->conf->auth_algs;
 570         params.wpa_version = hapd->conf->wpa;
 571         params.privacy = hapd->conf->ssid.wep.keys_set || hapd->conf->wpa ||
 572                 (hapd->conf->ieee802_1x &&
 573                  (hapd->conf->default_wep_key_len ||
 574                   hapd->conf->individual_wep_key_len));
 575         switch (hapd->conf->ignore_broadcast_ssid) {
 576         case 0:
 577                 params.hide_ssid = NO_SSID_HIDING;
 578                 break;
 579         case 1:
 580                 params.hide_ssid = HIDDEN_SSID_ZERO_LEN;
 581                 break;
 582         case 2:
 583                 params.hide_ssid = HIDDEN_SSID_ZERO_CONTENTS;
 584                 break;
 585         }
 586         hostapd_build_ap_extra_ies(hapd, &beacon, &proberesp, &assocresp);
 587         params.beacon_ies = beacon;
 588         params.proberesp_ies = proberesp;
 589         params.assocresp_ies = assocresp;
 590         params.isolate = hapd->conf->isolate;
 591 #ifdef NEED_AP_MLME
 592         params.cts_protect = !!(ieee802_11_erp_info(hapd) &
 593                                 ERP_INFO_USE_PROTECTION);
 594         params.preamble = hapd->iface->num_sta_no_short_preamble == 0 &&
 595                 hapd->iconf->preamble == SHORT_PREAMBLE;
 596         if (hapd->iface->current_mode &&
 597             hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
 598                 params.short_slot_time =
 599                         hapd->iface->num_sta_no_short_slot_time > 0 ? 0 : 1;
 600         else
 601                 params.short_slot_time = -1;
 602         if (!hapd->iconf->ieee80211n || hapd->conf->disable_11n)
 603                 params.ht_opmode = -1;
 604         else
 605                 params.ht_opmode = hapd->iface->ht_op_mode;
 606 #endif /* NEED_AP_MLME */
 607         params.interworking = hapd->conf->interworking;
 608         if (hapd->conf->interworking &&
 609             !is_zero_ether_addr(hapd->conf->hessid))
 610                 params.hessid = hapd->conf->hessid;
 611         params.access_network_type = hapd->conf->access_network_type;
 612         if (hostapd_drv_set_ap(hapd, &params))
 613                 wpa_printf(MSG_ERROR, "Failed to set beacon parameters");
 614         hostapd_free_ap_extra_ies(hapd, beacon, proberesp, assocresp);
 615
 616         os_free(tail);
 617         os_free(head);
 618 }
 619
 620
 621 void ieee802_11_set_beacons(struct hostapd_iface *iface)
 622 {
 623         size_t i;
 624         for (i = 0; i < iface->num_bss; i++)
 625                 ieee802_11_set_beacon(iface->bss[i]);
 626 }
 627
 628 #endif /* CONFIG_NATIVE_WINDOWS */