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wlantest: Add support for decrypting 4-address Data frames
[thirdparty/hostap.git] / src / ap / beacon.c
CommitLineData
6fc6879b
JM		 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.
0a66ce3c 5 * Copyright (c) 2008-2012, Jouni Malinen <j@w1.fi>
6fc6879b 6 *
5f9c134a
JM		 7 * This software may be distributed under the terms of the BSD license.
8 * See README for more details.
6fc6879b
JM		 9 */
10
6226e38d 11#include "utils/includes.h"
6fc6879b
JM		 12
13#ifndef CONFIG_NATIVE_WINDOWS
14
6226e38d 15#include "utils/common.h"
81f4f619
JM		 16#include "common/ieee802_11_defs.h"
17#include "common/ieee802_11_common.h"
ada157f3 18#include "common/hw_features_common.h"
e44f8bf2
JM		 19#include "wps/wps_defs.h"
20#include "p2p/p2p.h"
6fc6879b
JM		 21#include "hostapd.h"
22#include "ieee802_11.h"
6226e38d 23#include "wpa_auth.h"
1057d78e 24#include "wmm.h"
6226e38d 25#include "ap_config.h"
6fc6879b 26#include "sta_info.h"
dce044cc 27#include "p2p_hostapd.h"
cee7d66b 28#include "ap_drv_ops.h"
6226e38d 29#include "beacon.h"
19a8ad99 30#include "hs20.h"
3d7ad2f6 31#include "dfs.h"
04059ab8 32#include "taxonomy.h"
6fc6879b
JM		 33
34
062390ef
JM		 35#ifdef NEED_AP_MLME
36
0629eeb4
JM		 37static u8 * hostapd_eid_rm_enabled_capab(struct hostapd_data *hapd, u8 *eid,
38 size_t len)
39{
01018212
DS		 40 size_t i;
41
42 for (i = 0; i < RRM_CAPABILITIES_IE_LEN; i++) {
43 if (hapd->conf->radio_measurements[i])
44 break;
45 }
46
47 if (i == RRM_CAPABILITIES_IE_LEN || len < 2 + RRM_CAPABILITIES_IE_LEN)
0629eeb4
JM		 48 return eid;
49
50 *eid++ = WLAN_EID_RRM_ENABLED_CAPABILITIES;
01018212
DS		 51 *eid++ = RRM_CAPABILITIES_IE_LEN;
52 os_memcpy(eid, hapd->conf->radio_measurements, RRM_CAPABILITIES_IE_LEN);
53
54 return eid + RRM_CAPABILITIES_IE_LEN;
0629eeb4
JM		 55}
56
57
9bc33868
JM		 58static u8 * hostapd_eid_bss_load(struct hostapd_data *hapd, u8 *eid, size_t len)
59{
ec8f36af
KP		 60 if (len < 2 + 5)
61 return eid;
62
9bc33868
JM		 63#ifdef CONFIG_TESTING_OPTIONS
64 if (hapd->conf->bss_load_test_set) {
9bc33868
JM		 65 *eid++ = WLAN_EID_BSS_LOAD;
66 *eid++ = 5;
67 os_memcpy(eid, hapd->conf->bss_load_test, 5);
68 eid += 5;
ec8f36af 69 return eid;
9bc33868
JM		 70 }
71#endif /* CONFIG_TESTING_OPTIONS */
ec8f36af
KP		 72 if (hapd->conf->bss_load_update_period) {
73 *eid++ = WLAN_EID_BSS_LOAD;
74 *eid++ = 5;
75 WPA_PUT_LE16(eid, hapd->num_sta);
76 eid += 2;
77 *eid++ = hapd->iface->channel_utilization;
78 WPA_PUT_LE16(eid, 0); /* no available admission capabity */
79 eid += 2;
80 }
9bc33868
JM		 81 return eid;
82}
83
84
6fc6879b
JM		 85static u8 ieee802_11_erp_info(struct hostapd_data *hapd)
86{
87 u8 erp = 0;
88
89 if (hapd->iface->current_mode == NULL ||
90 hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G)
91 return 0;
92
735f6522
JM		 93 if (hapd->iface->olbc)
94 erp |= ERP_INFO_USE_PROTECTION;
95 if (hapd->iface->num_sta_non_erp > 0) {
96 erp |= ERP_INFO_NON_ERP_PRESENT |
97 ERP_INFO_USE_PROTECTION;
6fc6879b 98 }
a0fad210
JM		 99 if (hapd->iface->num_sta_no_short_preamble > 0 ||
100 hapd->iconf->preamble == LONG_PREAMBLE)
6fc6879b
JM		 101 erp |= ERP_INFO_BARKER_PREAMBLE_MODE;
102
103 return erp;
104}
105
106
107static u8 * hostapd_eid_ds_params(struct hostapd_data *hapd, u8 *eid)
108{
109 *eid++ = WLAN_EID_DS_PARAMS;
110 *eid++ = 1;
111 *eid++ = hapd->iconf->channel;
112 return eid;
113}
114
115
116static u8 * hostapd_eid_erp_info(struct hostapd_data *hapd, u8 *eid)
117{
118 if (hapd->iface->current_mode == NULL ||
119 hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G)
120 return eid;
121
122 /* Set NonERP_present and use_protection bits if there
123 * are any associated NonERP stations. */
124 /* TODO: use_protection bit can be set to zero even if
125 * there are NonERP stations present. This optimization
126 * might be useful if NonERP stations are "quiet".
127 * See 802.11g/D6 E-1 for recommended practice.
128 * In addition, Non ERP present might be set, if AP detects Non ERP
129 * operation on other APs. */
130
131 /* Add ERP Information element */
132 *eid++ = WLAN_EID_ERP_INFO;
133 *eid++ = 1;
134 *eid++ = ieee802_11_erp_info(hapd);
135
136 return eid;
137}
138
139
e0392f82
S		 140static u8 * hostapd_eid_pwr_constraint(struct hostapd_data *hapd, u8 *eid)
141{
142 u8 *pos = eid;
3d7ad2f6
C		 143 u8 local_pwr_constraint = 0;
144 int dfs;
e0392f82 145
3d7ad2f6 146 if (hapd->iface->current_mode == NULL ||
e0392f82
S		 147 hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211A)
148 return eid;
149
c53a9bf8
SD		 150 /* Let host drivers add this IE if DFS support is offloaded */
151 if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD)
152 return eid;
153
3d7ad2f6
C		 154 /*
155 * There is no DFS support and power constraint was not directly
156 * requested by config option.
157 */
158 if (!hapd->iconf->ieee80211h &&
159 hapd->iconf->local_pwr_constraint == -1)
160 return eid;
161
162 /* Check if DFS is required by regulatory. */
163 dfs = hostapd_is_dfs_required(hapd->iface);
164 if (dfs < 0) {
165 wpa_printf(MSG_WARNING, "Failed to check if DFS is required; ret=%d",
166 dfs);
167 dfs = 0;
168 }
169
170 if (dfs == 0 && hapd->iconf->local_pwr_constraint == -1)
171 return eid;
172
173 /*
174 * ieee80211h (DFS) is enabled so Power Constraint element shall
175 * be added when running on DFS channel whenever local_pwr_constraint
176 * is configured or not. In order to meet regulations when TPC is not
177 * implemented using a transmit power that is below the legal maximum
178 * (including any mitigation factor) should help. In this case,
179 * indicate 3 dB below maximum allowed transmit power.
180 */
181 if (hapd->iconf->local_pwr_constraint == -1)
182 local_pwr_constraint = 3;
183
e0392f82
S		 184 /*
185 * A STA that is not an AP shall use a transmit power less than or
186 * equal to the local maximum transmit power level for the channel.
187 * The local maximum transmit power can be calculated from the formula:
188 * local max TX pwr = max TX pwr - local pwr constraint
189 * Where max TX pwr is maximum transmit power level specified for
190 * channel in Country element and local pwr constraint is specified
191 * for channel in this Power Constraint element.
192 */
193
194 /* Element ID */
195 *pos++ = WLAN_EID_PWR_CONSTRAINT;
196 /* Length */
197 *pos++ = 1;
198 /* Local Power Constraint */
3d7ad2f6
C		 199 if (local_pwr_constraint)
200 *pos++ = local_pwr_constraint;
201 else
202 *pos++ = hapd->iconf->local_pwr_constraint;
e0392f82
S		 203
204 return pos;
205}
206
207
df73d284
JM		 208static u8 * hostapd_eid_country_add(u8 *pos, u8 *end, int chan_spacing,
209 struct hostapd_channel_data *start,
210 struct hostapd_channel_data *prev)
211{
212 if (end - pos < 3)
213 return pos;
214
215 /* first channel number */
216 *pos++ = start->chan;
217 /* number of channels */
218 *pos++ = (prev->chan - start->chan) / chan_spacing + 1;
219 /* maximum transmit power level */
220 *pos++ = start->max_tx_power;
221
222 return pos;
223}
224
225
6fc6879b
JM		 226static u8 * hostapd_eid_country(struct hostapd_data *hapd, u8 *eid,
227 int max_len)
228{
229 u8 *pos = eid;
df73d284
JM		 230 u8 *end = eid + max_len;
231 int i;
232 struct hostapd_hw_modes *mode;
233 struct hostapd_channel_data *start, *prev;
234 int chan_spacing = 1;
235
236 if (!hapd->iconf->ieee80211d || max_len < 6 ||
237 hapd->iface->current_mode == NULL)
6fc6879b
JM		 238 return eid;
239
240 *pos++ = WLAN_EID_COUNTRY;
241 pos++; /* length will be set later */
242 os_memcpy(pos, hapd->iconf->country, 3); /* e.g., 'US ' */
243 pos += 3;
244
df73d284
JM		 245 mode = hapd->iface->current_mode;
246 if (mode->mode == HOSTAPD_MODE_IEEE80211A)
247 chan_spacing = 4;
248
249 start = prev = NULL;
250 for (i = 0; i < mode->num_channels; i++) {
251 struct hostapd_channel_data *chan = &mode->channels[i];
252 if (chan->flag & HOSTAPD_CHAN_DISABLED)
253 continue;
254 if (start && prev &&
255 prev->chan + chan_spacing == chan->chan &&
256 start->max_tx_power == chan->max_tx_power) {
257 prev = chan;
258 continue; /* can use same entry */
259 }
260
bc32bb70 261 if (start && prev) {
df73d284
JM		 262 pos = hostapd_eid_country_add(pos, end, chan_spacing,
263 start, prev);
264 start = NULL;
265 }
266
267 /* Start new group */
268 start = prev = chan;
269 }
270
271 if (start) {
272 pos = hostapd_eid_country_add(pos, end, chan_spacing,
273 start, prev);
274 }
275
276 if ((pos - eid) & 1) {
277 if (end - pos < 1)
278 return eid;
6fc6879b 279 *pos++ = 0; /* pad for 16-bit alignment */
df73d284 280 }
6fc6879b
JM		 281
282 eid[1] = (pos - eid) - 2;
283
284 return pos;
285}
286
287
6c0575c3 288static u8 * hostapd_eid_wpa(struct hostapd_data *hapd, u8 *eid, size_t len)
6fc6879b
JM		 289{
290 const u8 *ie;
291 size_t ielen;
292
293 ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &ielen);
294 if (ie == NULL || ielen > len)
295 return eid;
296
297 os_memcpy(eid, ie, ielen);
298 return eid + ielen;
299}
300
301
bf281c12
AO		 302static u8 * hostapd_eid_csa(struct hostapd_data *hapd, u8 *eid)
303{
2b6e1216
JB		 304#ifdef CONFIG_TESTING_OPTIONS
305 if (hapd->iface->cs_oper_class && hapd->iconf->ecsa_ie_only)
306 return eid;
307#endif /* CONFIG_TESTING_OPTIONS */
308
9438e9c7 309 if (!hapd->cs_freq_params.channel)
bf281c12
AO		 310 return eid;
311
312 *eid++ = WLAN_EID_CHANNEL_SWITCH;
313 *eid++ = 3;
6782b684 314 *eid++ = hapd->cs_block_tx;
9438e9c7 315 *eid++ = hapd->cs_freq_params.channel;
6782b684 316 *eid++ = hapd->cs_count;
bf281c12
AO		 317
318 return eid;
319}
320
321
6315bfdb
AO		 322static u8 * hostapd_eid_ecsa(struct hostapd_data *hapd, u8 *eid)
323{
324 if (!hapd->cs_freq_params.channel || !hapd->iface->cs_oper_class)
325 return eid;
326
327 *eid++ = WLAN_EID_EXT_CHANSWITCH_ANN;
328 *eid++ = 4;
329 *eid++ = hapd->cs_block_tx;
330 *eid++ = hapd->iface->cs_oper_class;
331 *eid++ = hapd->cs_freq_params.channel;
332 *eid++ = hapd->cs_count;
333
334 return eid;
335}
336
337
c0d94d61
AO		 338static u8 * hostapd_eid_supported_op_classes(struct hostapd_data *hapd, u8 *eid)
339{
340 u8 op_class, channel;
341
342 if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_AP_CSA) ||
343 !hapd->iface->freq)
344 return eid;
345
346 if (ieee80211_freq_to_channel_ext(hapd->iface->freq,
347 hapd->iconf->secondary_channel,
348 hapd->iconf->vht_oper_chwidth,
349 &op_class, &channel) ==
350 NUM_HOSTAPD_MODES)
351 return eid;
352
353 *eid++ = WLAN_EID_SUPPORTED_OPERATING_CLASSES;
354 *eid++ = 2;
355
356 /* Current Operating Class */
357 *eid++ = op_class;
358
359 /* TODO: Advertise all the supported operating classes */
360 *eid++ = 0;
361
362 return eid;
363}
364
365
eacc6b24 366static u8 * hostapd_gen_probe_resp(struct hostapd_data *hapd,
eacc6b24
AN		 367 const struct ieee80211_mgmt *req,
368 int is_p2p, size_t *resp_len)
369{
370 struct ieee80211_mgmt *resp;
38d9048f 371 u8 *pos, *epos, *csa_pos;
eacc6b24
AN		 372 size_t buflen;
373
374#define MAX_PROBERESP_LEN 768
375 buflen = MAX_PROBERESP_LEN;
376#ifdef CONFIG_WPS
377 if (hapd->wps_probe_resp_ie)
378 buflen += wpabuf_len(hapd->wps_probe_resp_ie);
379#endif /* CONFIG_WPS */
380#ifdef CONFIG_P2P
381 if (hapd->p2p_probe_resp_ie)
382 buflen += wpabuf_len(hapd->p2p_probe_resp_ie);
383#endif /* CONFIG_P2P */
347827ff
AN		 384#ifdef CONFIG_FST
385 if (hapd->iface->fst_ies)
386 buflen += wpabuf_len(hapd->iface->fst_ies);
387#endif /* CONFIG_FST */
b52f084c
JM		 388 if (hapd->conf->vendor_elements)
389 buflen += wpabuf_len(hapd->conf->vendor_elements);
e7d0e97b
YL		 390 if (hapd->conf->vendor_vht) {
391 buflen += 5 + 2 + sizeof(struct ieee80211_vht_capabilities) +
392 2 + sizeof(struct ieee80211_vht_operation);
393 }
fb9a1c3e 394
d512f406
PX		 395#ifdef CONFIG_IEEE80211AX
396 if (hapd->iconf->ieee80211ax) {
4a374634
PX		 397 buflen += 3 + sizeof(struct ieee80211_he_capabilities) +
398 3 + sizeof(struct ieee80211_he_operation);
d512f406 399 }
4a374634 400#endif /* CONFIG_IEEE80211AX */
d512f406 401
fb9a1c3e
AS		 402 buflen += hostapd_mbo_ie_len(hapd);
403
eacc6b24
AN		 404 resp = os_zalloc(buflen);
405 if (resp == NULL)
406 return NULL;
407
408 epos = ((u8 *) resp) + MAX_PROBERESP_LEN;
409
410 resp->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
411 WLAN_FC_STYPE_PROBE_RESP);
412 if (req)
413 os_memcpy(resp->da, req->sa, ETH_ALEN);
414 os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN);
415
416 os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN);
417 resp->u.probe_resp.beacon_int =
418 host_to_le16(hapd->iconf->beacon_int);
419
420 /* hardware or low-level driver will setup seq_ctrl and timestamp */
421 resp->u.probe_resp.capab_info =
f41ded6f 422 host_to_le16(hostapd_own_capab_info(hapd));
eacc6b24
AN		 423
424 pos = resp->u.probe_resp.variable;
425 *pos++ = WLAN_EID_SSID;
426 *pos++ = hapd->conf->ssid.ssid_len;
427 os_memcpy(pos, hapd->conf->ssid.ssid, hapd->conf->ssid.ssid_len);
428 pos += hapd->conf->ssid.ssid_len;
429
430 /* Supported rates */
431 pos = hostapd_eid_supp_rates(hapd, pos);
432
433 /* DS Params */
434 pos = hostapd_eid_ds_params(hapd, pos);
435
436 pos = hostapd_eid_country(hapd, pos, epos - pos);
437
e0392f82
S		 438 /* Power Constraint element */
439 pos = hostapd_eid_pwr_constraint(hapd, pos);
440
38d9048f
AO		 441 /* CSA IE */
442 csa_pos = hostapd_eid_csa(hapd, pos);
443 if (csa_pos != pos)
444 hapd->cs_c_off_proberesp = csa_pos - (u8 *) resp - 1;
445 pos = csa_pos;
446
eacc6b24
AN		 447 /* ERP Information element */
448 pos = hostapd_eid_erp_info(hapd, pos);
449
450 /* Extended supported rates */
451 pos = hostapd_eid_ext_supp_rates(hapd, pos);
452
453 /* RSN, MDIE, WPA */
454 pos = hostapd_eid_wpa(hapd, pos, epos - pos);
455
9bc33868
JM		 456 pos = hostapd_eid_bss_load(hapd, pos, epos - pos);
457
0629eeb4
JM		 458 pos = hostapd_eid_rm_enabled_capab(hapd, pos, epos - pos);
459
38d9048f
AO		 460 /* eCSA IE */
461 csa_pos = hostapd_eid_ecsa(hapd, pos);
462 if (csa_pos != pos)
463 hapd->cs_c_off_ecsa_proberesp = csa_pos - (u8 *) resp - 1;
464 pos = csa_pos;
465
c0d94d61
AO		 466 pos = hostapd_eid_supported_op_classes(hapd, pos);
467
eacc6b24 468#ifdef CONFIG_IEEE80211N
38d9048f
AO		 469 /* Secondary Channel Offset element */
470 /* TODO: The standard doesn't specify a position for this element. */
471 pos = hostapd_eid_secondary_channel(hapd, pos);
472
eacc6b24
AN		 473 pos = hostapd_eid_ht_capabilities(hapd, pos);
474 pos = hostapd_eid_ht_operation(hapd, pos);
475#endif /* CONFIG_IEEE80211N */
476
477 pos = hostapd_eid_ext_capab(hapd, pos);
478
479 pos = hostapd_eid_time_adv(hapd, pos);
480 pos = hostapd_eid_time_zone(hapd, pos);
481
482 pos = hostapd_eid_interworking(hapd, pos);
483 pos = hostapd_eid_adv_proto(hapd, pos);
484 pos = hostapd_eid_roaming_consortium(hapd, pos);
485
347827ff
AN		 486#ifdef CONFIG_FST
487 if (hapd->iface->fst_ies) {
488 os_memcpy(pos, wpabuf_head(hapd->iface->fst_ies),
489 wpabuf_len(hapd->iface->fst_ies));
490 pos += wpabuf_len(hapd->iface->fst_ies);
491 }
492#endif /* CONFIG_FST */
493
532b16c7 494#ifdef CONFIG_IEEE80211AC
e7d0e97b 495 if (hapd->iconf->ieee80211ac && !hapd->conf->disable_11ac) {
fc72a48a 496 pos = hostapd_eid_vht_capabilities(hapd, pos, 0);
e7d0e97b 497 pos = hostapd_eid_vht_operation(hapd, pos);
3c417499 498 pos = hostapd_eid_txpower_envelope(hapd, pos);
38d9048f 499 pos = hostapd_eid_wb_chsw_wrapper(hapd, pos);
e7d0e97b 500 }
198a942c
JM		 501#endif /* CONFIG_IEEE80211AC */
502
503 pos = hostapd_eid_fils_indic(hapd, pos, 0);
504
d512f406
PX		 505#ifdef CONFIG_IEEE80211AX
506 if (hapd->iconf->ieee80211ax) {
4a374634
PX		 507 pos = hostapd_eid_he_capab(hapd, pos);
508 pos = hostapd_eid_he_operation(hapd, pos);
d512f406
PX		 509 }
510#endif /* CONFIG_IEEE80211AX */
511
4a374634
PX		 512#ifdef CONFIG_IEEE80211AC
513 if (hapd->conf->vendor_vht)
514 pos = hostapd_eid_vendor_vht(hapd, pos);
515#endif /* CONFIG_IEEE80211AC */
516
eacc6b24
AN		 517 /* Wi-Fi Alliance WMM */
518 pos = hostapd_eid_wmm(hapd, pos);
519
520#ifdef CONFIG_WPS
521 if (hapd->conf->wps_state && hapd->wps_probe_resp_ie) {
522 os_memcpy(pos, wpabuf_head(hapd->wps_probe_resp_ie),
523 wpabuf_len(hapd->wps_probe_resp_ie));
524 pos += wpabuf_len(hapd->wps_probe_resp_ie);
525 }
526#endif /* CONFIG_WPS */
527
528#ifdef CONFIG_P2P
529 if ((hapd->conf->p2p & P2P_ENABLED) && is_p2p &&
530 hapd->p2p_probe_resp_ie) {
531 os_memcpy(pos, wpabuf_head(hapd->p2p_probe_resp_ie),
532 wpabuf_len(hapd->p2p_probe_resp_ie));
533 pos += wpabuf_len(hapd->p2p_probe_resp_ie);
534 }
535#endif /* CONFIG_P2P */
536#ifdef CONFIG_P2P_MANAGER
537 if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) ==
538 P2P_MANAGE)
539 pos = hostapd_eid_p2p_manage(hapd, pos);
540#endif /* CONFIG_P2P_MANAGER */
541
19a8ad99
JK		 542#ifdef CONFIG_HS20
543 pos = hostapd_eid_hs20_indication(hapd, pos);
a14896e8 544 pos = hostapd_eid_osen(hapd, pos);
19a8ad99
JK		 545#endif /* CONFIG_HS20 */
546
fb9a1c3e
AS		 547 pos = hostapd_eid_mbo(hapd, pos, (u8 *) resp + buflen - pos);
548
b52f084c
JM		 549 if (hapd->conf->vendor_elements) {
550 os_memcpy(pos, wpabuf_head(hapd->conf->vendor_elements),
551 wpabuf_len(hapd->conf->vendor_elements));
552 pos += wpabuf_len(hapd->conf->vendor_elements);
553 }
554
eacc6b24
AN		 555 *resp_len = pos - (u8 *) resp;
556 return (u8 *) resp;
557}
558
559
0a66ce3c
JM		 560enum ssid_match_result {
561 NO_SSID_MATCH,
562 EXACT_SSID_MATCH,
563 WILDCARD_SSID_MATCH
564};
565
566static enum ssid_match_result ssid_match(struct hostapd_data *hapd,
567 const u8 *ssid, size_t ssid_len,
568 const u8 *ssid_list,
569 size_t ssid_list_len)
570{
571 const u8 *pos, *end;
572 int wildcard = 0;
573
574 if (ssid_len == 0)
575 wildcard = 1;
576 if (ssid_len == hapd->conf->ssid.ssid_len &&
577 os_memcmp(ssid, hapd->conf->ssid.ssid, ssid_len) == 0)
578 return EXACT_SSID_MATCH;
579
580 if (ssid_list == NULL)
581 return wildcard ? WILDCARD_SSID_MATCH : NO_SSID_MATCH;
582
583 pos = ssid_list;
584 end = ssid_list + ssid_list_len;
a5a2f252
JM		 585 while (end - pos >= 1) {
586 if (2 + pos[1] > end - pos)
0a66ce3c
JM		 587 break;
588 if (pos[1] == 0)
589 wildcard = 1;
590 if (pos[1] == hapd->conf->ssid.ssid_len &&
591 os_memcmp(pos + 2, hapd->conf->ssid.ssid, pos[1]) == 0)
592 return EXACT_SSID_MATCH;
593 pos += 2 + pos[1];
594 }
595
596 return wildcard ? WILDCARD_SSID_MATCH : NO_SSID_MATCH;
597}
598
599
a65a9b8d
JM		 600void sta_track_expire(struct hostapd_iface *iface, int force)
601{
602 struct os_reltime now;
603 struct hostapd_sta_info *info;
604
605 if (!iface->num_sta_seen)
606 return;
607
608 os_get_reltime(&now);
609 while ((info = dl_list_first(&iface->sta_seen, struct hostapd_sta_info,
610 list))) {
611 if (!force &&
612 !os_reltime_expired(&now, &info->last_seen,
613 iface->conf->track_sta_max_age))
614 break;
615 force = 0;
616
617 wpa_printf(MSG_MSGDUMP, "%s: Expire STA tracking entry for "
618 MACSTR, iface->bss[0]->conf->iface,
619 MAC2STR(info->addr));
620 dl_list_del(&info->list);
621 iface->num_sta_seen--;
44281940 622 sta_track_del(info);
a65a9b8d
JM		 623 }
624}
625
626
627static struct hostapd_sta_info * sta_track_get(struct hostapd_iface *iface,
628 const u8 *addr)
629{
630 struct hostapd_sta_info *info;
631
632 dl_list_for_each(info, &iface->sta_seen, struct hostapd_sta_info, list)
633 if (os_memcmp(addr, info->addr, ETH_ALEN) == 0)
634 return info;
635
636 return NULL;
637}
638
639
a818425d 640void sta_track_add(struct hostapd_iface *iface, const u8 *addr, int ssi_signal)
a65a9b8d
JM		 641{
642 struct hostapd_sta_info *info;
643
644 info = sta_track_get(iface, addr);
645 if (info) {
646 /* Move the most recent entry to the end of the list */
647 dl_list_del(&info->list);
648 dl_list_add_tail(&iface->sta_seen, &info->list);
649 os_get_reltime(&info->last_seen);
a818425d 650 info->ssi_signal = ssi_signal;
a65a9b8d
JM		 651 return;
652 }
653
654 /* Add a new entry */
655 info = os_zalloc(sizeof(*info));
711e3cab
JC		 656 if (info == NULL)
657 return;
a65a9b8d
JM		 658 os_memcpy(info->addr, addr, ETH_ALEN);
659 os_get_reltime(&info->last_seen);
a818425d 660 info->ssi_signal = ssi_signal;
a65a9b8d
JM		 661
662 if (iface->num_sta_seen >= iface->conf->track_sta_max_num) {
663 /* Expire oldest entry to make room for a new one */
664 sta_track_expire(iface, 1);
665 }
666
667 wpa_printf(MSG_MSGDUMP, "%s: Add STA tracking entry for "
668 MACSTR, iface->bss[0]->conf->iface, MAC2STR(addr));
669 dl_list_add_tail(&iface->sta_seen, &info->list);
670 iface->num_sta_seen++;
671}
672
673
0e2412d0
JM		 674struct hostapd_data *
675sta_track_seen_on(struct hostapd_iface *iface, const u8 *addr,
676 const char *ifname)
964f64e2
JM		 677{
678 struct hapd_interfaces *interfaces = iface->interfaces;
679 size_t i, j;
680
681 for (i = 0; i < interfaces->count; i++) {
0e2412d0
JM		 682 struct hostapd_data *hapd = NULL;
683
964f64e2
JM		 684 iface = interfaces->iface[i];
685 for (j = 0; j < iface->num_bss; j++) {
0e2412d0 686 hapd = iface->bss[j];
964f64e2
JM		 687 if (os_strcmp(ifname, hapd->conf->iface) == 0)
688 break;
0e2412d0 689 hapd = NULL;
964f64e2
JM		 690 }
691
0e2412d0
JM		 692 if (hapd && sta_track_get(iface, addr))
693 return hapd;
964f64e2
JM		 694 }
695
0e2412d0 696 return NULL;
964f64e2
JM		 697}
698
699
44281940
DG		 700#ifdef CONFIG_TAXONOMY
701void sta_track_claim_taxonomy_info(struct hostapd_iface *iface, const u8 *addr,
702 struct wpabuf **probe_ie_taxonomy)
703{
704 struct hostapd_sta_info *info;
705
706 info = sta_track_get(iface, addr);
707 if (!info)
708 return;
709
710 wpabuf_free(*probe_ie_taxonomy);
711 *probe_ie_taxonomy = info->probe_ie_taxonomy;
712 info->probe_ie_taxonomy = NULL;
713}
714#endif /* CONFIG_TAXONOMY */
715
716
b57e086c 717void handle_probe_req(struct hostapd_data *hapd,
baf513d6
JB		 718 const struct ieee80211_mgmt *mgmt, size_t len,
719 int ssi_signal)
6fc6879b 720{
eacc6b24 721 u8 *resp;
6fc6879b 722 struct ieee802_11_elems elems;
b57e086c 723 const u8 *ie;
eacc6b24 724 size_t ie_len;
eacc6b24 725 size_t i, resp_len;
9a898ee8 726 int noack;
0a66ce3c 727 enum ssid_match_result res;
95e551c5
AO		 728 int ret;
729 u16 csa_offs[2];
730 size_t csa_offs_len;
6fc6879b 731
e1b99620 732 if (len < IEEE80211_HDRLEN)
cbcf92b4 733 return;
e1b99620 734 ie = ((const u8 *) mgmt) + IEEE80211_HDRLEN;
a65a9b8d 735 if (hapd->iconf->track_sta_max_num)
a818425d 736 sta_track_add(hapd->iface, mgmt->sa, ssi_signal);
e1b99620 737 ie_len = len - IEEE80211_HDRLEN;
6fc6879b 738
94709ea3 739 for (i = 0; hapd->probereq_cb && i < hapd->num_probereq_cb; i++)
cd7d80f3 740 if (hapd->probereq_cb[i].cb(hapd->probereq_cb[i].ctx,
04a85e44 741 mgmt->sa, mgmt->da, mgmt->bssid,
baf513d6 742 ie, ie_len, ssi_signal) > 0)
cd7d80f3 743 return;
ad08c363 744
6fc6879b
JM		 745 if (!hapd->iconf->send_probe_response)
746 return;
747
3d536eb4 748 if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) {
6fc6879b
JM		 749 wpa_printf(MSG_DEBUG, "Could not parse ProbeReq from " MACSTR,
750 MAC2STR(mgmt->sa));
751 return;
752 }
753
6fc6879b
JM		 754 if ((!elems.ssid || !elems.supp_rates)) {
755 wpa_printf(MSG_DEBUG, "STA " MACSTR " sent probe request "
756 "without SSID or supported rates element",
757 MAC2STR(mgmt->sa));
758 return;
759 }
760
c612ae97
IP		 761 /*
762 * No need to reply if the Probe Request frame was sent on an adjacent
763 * channel. IEEE Std 802.11-2012 describes this as a requirement for an
764 * AP with dot11RadioMeasurementActivated set to true, but strictly
765 * speaking does not allow such ignoring of Probe Request frames if
766 * dot11RadioMeasurementActivated is false. Anyway, this can help reduce
767 * number of unnecessary Probe Response frames for cases where the STA
768 * is less likely to see them (Probe Request frame sent on a
769 * neighboring, but partially overlapping, channel).
770 */
f87c99c7 771 if (elems.ds_params &&
c612ae97
IP		 772 hapd->iface->current_mode &&
773 (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G ||
774 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211B) &&
775 hapd->iconf->channel != elems.ds_params[0]) {
776 wpa_printf(MSG_DEBUG,
777 "Ignore Probe Request due to DS Params mismatch: chan=%u != ds.chan=%u",
778 hapd->iconf->channel, elems.ds_params[0]);
779 return;
780 }
781
e44f8bf2 782#ifdef CONFIG_P2P
4f6cd3f4 783 if (hapd->p2p && hapd->p2p_group && elems.wps_ie) {
e44f8bf2
JM		 784 struct wpabuf *wps;
785 wps = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA);
786 if (wps && !p2p_group_match_dev_type(hapd->p2p_group, wps)) {
787 wpa_printf(MSG_MSGDUMP, "P2P: Ignore Probe Request "
788 "due to mismatch with Requested Device "
789 "Type");
790 wpabuf_free(wps);
791 return;
792 }
793 wpabuf_free(wps);
794 }
8017b538 795
4f6cd3f4 796 if (hapd->p2p && hapd->p2p_group && elems.p2p) {
8017b538
JM		 797 struct wpabuf *p2p;
798 p2p = ieee802_11_vendor_ie_concat(ie, ie_len, P2P_IE_VENDOR_TYPE);
799 if (p2p && !p2p_group_match_dev_id(hapd->p2p_group, p2p)) {
800 wpa_printf(MSG_MSGDUMP, "P2P: Ignore Probe Request "
801 "due to mismatch with Device ID");
802 wpabuf_free(p2p);
803 return;
804 }
805 wpabuf_free(p2p);
806 }
e44f8bf2
JM		 807#endif /* CONFIG_P2P */
808
0a66ce3c
JM		 809 if (hapd->conf->ignore_broadcast_ssid && elems.ssid_len == 0 &&
810 elems.ssid_list_len == 0) {
6fc6879b
JM		 811 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR " for "
812 "broadcast SSID ignored", MAC2STR(mgmt->sa));
813 return;
814 }
815
e44f8bf2
JM		 816#ifdef CONFIG_P2P
817 if ((hapd->conf->p2p & P2P_GROUP_OWNER) &&
818 elems.ssid_len == P2P_WILDCARD_SSID_LEN &&
819 os_memcmp(elems.ssid, P2P_WILDCARD_SSID,
820 P2P_WILDCARD_SSID_LEN) == 0) {
821 /* Process P2P Wildcard SSID like Wildcard SSID */
822 elems.ssid_len = 0;
823 }
824#endif /* CONFIG_P2P */
825
04059ab8
DG		 826#ifdef CONFIG_TAXONOMY
827 {
44281940
DG		 828 struct sta_info *sta;
829 struct hostapd_sta_info *info;
830
831 if ((sta = ap_get_sta(hapd, mgmt->sa)) != NULL) {
04059ab8 832 taxonomy_sta_info_probe_req(hapd, sta, ie, ie_len);
44281940
DG		 833 } else if ((info = sta_track_get(hapd->iface,
834 mgmt->sa)) != NULL) {
835 taxonomy_hostapd_sta_info_probe_req(hapd, info,
836 ie, ie_len);
837 }
04059ab8
DG		 838 }
839#endif /* CONFIG_TAXONOMY */
840
0a66ce3c
JM		 841 res = ssid_match(hapd, elems.ssid, elems.ssid_len,
842 elems.ssid_list, elems.ssid_list_len);
f41ded6f 843 if (res == NO_SSID_MATCH) {
6fc6879b 844 if (!(mgmt->da[0] & 0x01)) {
6fc6879b 845 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR
0a66ce3c 846 " for foreign SSID '%s' (DA " MACSTR ")%s",
b37d582e
JM		 847 MAC2STR(mgmt->sa),
848 wpa_ssid_txt(elems.ssid, elems.ssid_len),
0a66ce3c
JM		 849 MAC2STR(mgmt->da),
850 elems.ssid_list ? " (SSID list)" : "");
6fc6879b
JM		 851 }
852 return;
853 }
854
122ba579 855#ifdef CONFIG_INTERWORKING
2aa82e52
MB		 856 if (hapd->conf->interworking &&
857 elems.interworking && elems.interworking_len >= 1) {
122ba579
JM		 858 u8 ant = elems.interworking[0] & 0x0f;
859 if (ant != INTERWORKING_ANT_WILDCARD &&
860 ant != hapd->conf->access_network_type) {
861 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR
862 " for mismatching ANT %u ignored",
863 MAC2STR(mgmt->sa), ant);
864 return;
865 }
866 }
867
2aa82e52 868 if (hapd->conf->interworking && elems.interworking &&
122ba579
JM		 869 (elems.interworking_len == 7 || elems.interworking_len == 9)) {
870 const u8 *hessid;
871 if (elems.interworking_len == 7)
872 hessid = elems.interworking + 1;
873 else
874 hessid = elems.interworking + 1 + 2;
875 if (!is_broadcast_ether_addr(hessid) &&
876 os_memcmp(hessid, hapd->conf->hessid, ETH_ALEN) != 0) {
877 wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR
878 " for mismatching HESSID " MACSTR
879 " ignored",
880 MAC2STR(mgmt->sa), MAC2STR(hessid));
881 return;
882 }
883 }
884#endif /* CONFIG_INTERWORKING */
885
85b4eac3
JM		 886#ifdef CONFIG_P2P
887 if ((hapd->conf->p2p & P2P_GROUP_OWNER) &&
888 supp_rates_11b_only(&elems)) {
889 /* Indicates support for 11b rates only */
890 wpa_printf(MSG_EXCESSIVE, "P2P: Ignore Probe Request from "
891 MACSTR " with only 802.11b rates",
892 MAC2STR(mgmt->sa));
893 return;
894 }
895#endif /* CONFIG_P2P */
896
6fc6879b
JM		 897 /* TODO: verify that supp_rates contains at least one matching rate
898 * with AP configuration */
eacc6b24 899
964f64e2
JM		 900 if (hapd->conf->no_probe_resp_if_seen_on &&
901 is_multicast_ether_addr(mgmt->da) &&
902 is_multicast_ether_addr(mgmt->bssid) &&
903 sta_track_seen_on(hapd->iface, mgmt->sa,
904 hapd->conf->no_probe_resp_if_seen_on)) {
905 wpa_printf(MSG_MSGDUMP, "%s: Ignore Probe Request from " MACSTR
906 " since STA has been seen on %s",
907 hapd->conf->iface, MAC2STR(mgmt->sa),
908 hapd->conf->no_probe_resp_if_seen_on);
909 return;
910 }
911
9b7a1bd7
JM		 912 if (hapd->conf->no_probe_resp_if_max_sta &&
913 is_multicast_ether_addr(mgmt->da) &&
914 is_multicast_ether_addr(mgmt->bssid) &&
915 hapd->num_sta >= hapd->conf->max_num_sta &&
916 !ap_get_sta(hapd, mgmt->sa)) {
917 wpa_printf(MSG_MSGDUMP, "%s: Ignore Probe Request from " MACSTR
918 " since no room for additional STA",
919 hapd->conf->iface, MAC2STR(mgmt->sa));
920 return;
921 }
922
c2aff6b1 923#ifdef CONFIG_TESTING_OPTIONS
06df2aa6 924 if (hapd->iconf->ignore_probe_probability > 0.0 &&
c2aff6b1
JB		 925 drand48() < hapd->iconf->ignore_probe_probability) {
926 wpa_printf(MSG_INFO,
927 "TESTING: ignoring probe request from " MACSTR,
928 MAC2STR(mgmt->sa));
929 return;
930 }
931#endif /* CONFIG_TESTING_OPTIONS */
932
f41ded6f 933 resp = hostapd_gen_probe_resp(hapd, mgmt, elems.p2p != NULL,
eacc6b24 934 &resp_len);
6fc6879b
JM		 935 if (resp == NULL)
936 return;
e44f8bf2 937
9a898ee8
HS		 938 /*
939 * If this is a broadcast probe request, apply no ack policy to avoid
940 * excessive retries.
941 */
0a66ce3c
JM		 942 noack = !!(res == WILDCARD_SSID_MATCH &&
943 is_broadcast_ether_addr(mgmt->da));
9a898ee8 944
95e551c5
AO		 945 csa_offs_len = 0;
946 if (hapd->csa_in_progress) {
947 if (hapd->cs_c_off_proberesp)
948 csa_offs[csa_offs_len++] =
949 hapd->cs_c_off_proberesp;
950
951 if (hapd->cs_c_off_ecsa_proberesp)
952 csa_offs[csa_offs_len++] =
953 hapd->cs_c_off_ecsa_proberesp;
954 }
955
956 ret = hostapd_drv_send_mlme_csa(hapd, resp, resp_len, noack,
957 csa_offs_len ? csa_offs : NULL,
958 csa_offs_len);
959
960 if (ret < 0)
61323e70 961 wpa_printf(MSG_INFO, "handle_probe_req: send failed");
6fc6879b
JM		 962
963 os_free(resp);
964
2d8bf732 965 wpa_printf(MSG_EXCESSIVE, "STA " MACSTR " sent probe request for %s "
6fc6879b
JM		 966 "SSID", MAC2STR(mgmt->sa),
967 elems.ssid_len == 0 ? "broadcast" : "our");
968}
969
5b99e21a
AN		 970
971static u8 * hostapd_probe_resp_offloads(struct hostapd_data *hapd,
972 size_t *resp_len)
973{
974 /* check probe response offloading caps and print warnings */
975 if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD))
976 return NULL;
977
978#ifdef CONFIG_WPS
979 if (hapd->conf->wps_state && hapd->wps_probe_resp_ie &&
980 (!(hapd->iface->probe_resp_offloads &
981 (WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS |
982 WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2))))
983 wpa_printf(MSG_WARNING, "Device is trying to offload WPS "
984 "Probe Response while not supporting this");
985#endif /* CONFIG_WPS */
986
987#ifdef CONFIG_P2P
988 if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_probe_resp_ie &&
989 !(hapd->iface->probe_resp_offloads &
990 WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P))
991 wpa_printf(MSG_WARNING, "Device is trying to offload P2P "
992 "Probe Response while not supporting this");
993#endif /* CONFIG_P2P */
994
995 if (hapd->conf->interworking &&
996 !(hapd->iface->probe_resp_offloads &
997 WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING))
998 wpa_printf(MSG_WARNING, "Device is trying to offload "
999 "Interworking Probe Response while not supporting "
1000 "this");
1001
1002 /* Generate a Probe Response template for the non-P2P case */
f41ded6f 1003 return hostapd_gen_probe_resp(hapd, NULL, 0, resp_len);
5b99e21a
AN		 1004}
1005
062390ef
JM		 1006#endif /* NEED_AP_MLME */
1007
1008
44281940
DG		 1009void sta_track_del(struct hostapd_sta_info *info)
1010{
1011#ifdef CONFIG_TAXONOMY
1012 wpabuf_free(info->probe_ie_taxonomy);
1013 info->probe_ie_taxonomy = NULL;
1014#endif /* CONFIG_TAXONOMY */
1015 os_free(info);
1016}
1017
1018
e44a384b
AO		 1019int ieee802_11_build_ap_params(struct hostapd_data *hapd,
1020 struct wpa_driver_ap_params *params)
6fc6879b 1021{
062390ef
JM		 1022 struct ieee80211_mgmt *head = NULL;
1023 u8 *tail = NULL;
1024 size_t head_len = 0, tail_len = 0;
5b99e21a
AN		 1025 u8 *resp = NULL;
1026 size_t resp_len = 0;
062390ef
JM		 1027#ifdef NEED_AP_MLME
1028 u16 capab_info;
38d9048f 1029 u8 *pos, *tailpos, *csa_pos;
062390ef 1030
6fc6879b
JM		 1031#define BEACON_HEAD_BUF_SIZE 256
1032#define BEACON_TAIL_BUF_SIZE 512
1033 head = os_zalloc(BEACON_HEAD_BUF_SIZE);
1c08f8c0
JM		 1034 tail_len = BEACON_TAIL_BUF_SIZE;
1035#ifdef CONFIG_WPS
1036 if (hapd->conf->wps_state && hapd->wps_beacon_ie)
1037 tail_len += wpabuf_len(hapd->wps_beacon_ie);
1038#endif /* CONFIG_WPS */
e44f8bf2
JM		 1039#ifdef CONFIG_P2P
1040 if (hapd->p2p_beacon_ie)
1041 tail_len += wpabuf_len(hapd->p2p_beacon_ie);
1042#endif /* CONFIG_P2P */
347827ff
AN		 1043#ifdef CONFIG_FST
1044 if (hapd->iface->fst_ies)
1045 tail_len += wpabuf_len(hapd->iface->fst_ies);
1046#endif /* CONFIG_FST */
b52f084c
JM		 1047 if (hapd->conf->vendor_elements)
1048 tail_len += wpabuf_len(hapd->conf->vendor_elements);
e7d0e97b
YL		 1049
1050#ifdef CONFIG_IEEE80211AC
1051 if (hapd->conf->vendor_vht) {
1052 tail_len += 5 + 2 + sizeof(struct ieee80211_vht_capabilities) +
1053 2 + sizeof(struct ieee80211_vht_operation);
1054 }
1055#endif /* CONFIG_IEEE80211AC */
1056
d512f406
PX		 1057#ifdef CONFIG_IEEE80211AX
1058 if (hapd->iconf->ieee80211ax) {
4a374634
PX		 1059 tail_len += 3 + sizeof(struct ieee80211_he_capabilities) +
1060 3 + sizeof(struct ieee80211_he_operation);
d512f406 1061 }
4a374634 1062#endif /* CONFIG_IEEE80211AX */
d512f406 1063
fb9a1c3e
AS		 1064 tail_len += hostapd_mbo_ie_len(hapd);
1065
1c08f8c0 1066 tailpos = tail = os_malloc(tail_len);
6fc6879b
JM		 1067 if (head == NULL || tail == NULL) {
1068 wpa_printf(MSG_ERROR, "Failed to set beacon data");
1069 os_free(head);
1070 os_free(tail);
e44a384b 1071 return -1;
6fc6879b
JM		 1072 }
1073
1074 head->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1075 WLAN_FC_STYPE_BEACON);
1076 head->duration = host_to_le16(0);
1077 os_memset(head->da, 0xff, ETH_ALEN);
1078
1079 os_memcpy(head->sa, hapd->own_addr, ETH_ALEN);
1080 os_memcpy(head->bssid, hapd->own_addr, ETH_ALEN);
1081 head->u.beacon.beacon_int =
1082 host_to_le16(hapd->iconf->beacon_int);
1083
1084 /* hardware or low-level driver will setup seq_ctrl and timestamp */
f41ded6f 1085 capab_info = hostapd_own_capab_info(hapd);
6fc6879b
JM		 1086 head->u.beacon.capab_info = host_to_le16(capab_info);
1087 pos = &head->u.beacon.variable[0];
1088
1089 /* SSID */
1090 *pos++ = WLAN_EID_SSID;
1091 if (hapd->conf->ignore_broadcast_ssid == 2) {
1092 /* clear the data, but keep the correct length of the SSID */
1093 *pos++ = hapd->conf->ssid.ssid_len;
1094 os_memset(pos, 0, hapd->conf->ssid.ssid_len);
1095 pos += hapd->conf->ssid.ssid_len;
1096 } else if (hapd->conf->ignore_broadcast_ssid) {
1097 *pos++ = 0; /* empty SSID */
1098 } else {
1099 *pos++ = hapd->conf->ssid.ssid_len;
1100 os_memcpy(pos, hapd->conf->ssid.ssid,
1101 hapd->conf->ssid.ssid_len);
1102 pos += hapd->conf->ssid.ssid_len;
1103 }
1104
1105 /* Supported rates */
1106 pos = hostapd_eid_supp_rates(hapd, pos);
1107
1108 /* DS Params */
1109 pos = hostapd_eid_ds_params(hapd, pos);
1110
1111 head_len = pos - (u8 *) head;
1112
1113 tailpos = hostapd_eid_country(hapd, tailpos,
1114 tail + BEACON_TAIL_BUF_SIZE - tailpos);
1115
e0392f82
S		 1116 /* Power Constraint element */
1117 tailpos = hostapd_eid_pwr_constraint(hapd, tailpos);
1118
38d9048f
AO		 1119 /* CSA IE */
1120 csa_pos = hostapd_eid_csa(hapd, tailpos);
1121 if (csa_pos != tailpos)
1122 hapd->cs_c_off_beacon = csa_pos - tail - 1;
1123 tailpos = csa_pos;
1124
6fc6879b
JM		 1125 /* ERP Information element */
1126 tailpos = hostapd_eid_erp_info(hapd, tailpos);
1127
1128 /* Extended supported rates */
1129 tailpos = hostapd_eid_ext_supp_rates(hapd, tailpos);
1130
1bc774a1 1131 /* RSN, MDIE, WPA */
6fc6879b 1132 tailpos = hostapd_eid_wpa(hapd, tailpos, tail + BEACON_TAIL_BUF_SIZE -
6c0575c3 1133 tailpos);
6fc6879b 1134
0629eeb4
JM		 1135 tailpos = hostapd_eid_rm_enabled_capab(hapd, tailpos,
1136 tail + BEACON_TAIL_BUF_SIZE -
1137 tailpos);
1138
9bc33868
JM		 1139 tailpos = hostapd_eid_bss_load(hapd, tailpos,
1140 tail + BEACON_TAIL_BUF_SIZE - tailpos);
1141
38d9048f
AO		 1142 /* eCSA IE */
1143 csa_pos = hostapd_eid_ecsa(hapd, tailpos);
1144 if (csa_pos != tailpos)
1145 hapd->cs_c_off_ecsa_beacon = csa_pos - tail - 1;
1146 tailpos = csa_pos;
1147
c0d94d61
AO		 1148 tailpos = hostapd_eid_supported_op_classes(hapd, tailpos);
1149
de9289c8 1150#ifdef CONFIG_IEEE80211N
38d9048f
AO		 1151 /* Secondary Channel Offset element */
1152 /* TODO: The standard doesn't specify a position for this element. */
1153 tailpos = hostapd_eid_secondary_channel(hapd, tailpos);
1154
677449b9
JM		 1155 tailpos = hostapd_eid_ht_capabilities(hapd, tailpos);
1156 tailpos = hostapd_eid_ht_operation(hapd, tailpos);
de9289c8
JM		 1157#endif /* CONFIG_IEEE80211N */
1158
1161ff1e
JM		 1159 tailpos = hostapd_eid_ext_capab(hapd, tailpos);
1160
39b97072
JM		 1161 /*
1162 * TODO: Time Advertisement element should only be included in some
1163 * DTIM Beacon frames.
1164 */
1165 tailpos = hostapd_eid_time_adv(hapd, tailpos);
1166
b83e3e93 1167 tailpos = hostapd_eid_interworking(hapd, tailpos);
c7c178e1 1168 tailpos = hostapd_eid_adv_proto(hapd, tailpos);
4b2a77ab 1169 tailpos = hostapd_eid_roaming_consortium(hapd, tailpos);
347827ff
AN		 1170
1171#ifdef CONFIG_FST
1172 if (hapd->iface->fst_ies) {
1173 os_memcpy(tailpos, wpabuf_head(hapd->iface->fst_ies),
1174 wpabuf_len(hapd->iface->fst_ies));
1175 tailpos += wpabuf_len(hapd->iface->fst_ies);
1176 }
1177#endif /* CONFIG_FST */
1178
532b16c7 1179#ifdef CONFIG_IEEE80211AC
e7d0e97b 1180 if (hapd->iconf->ieee80211ac && !hapd->conf->disable_11ac) {
fc72a48a 1181 tailpos = hostapd_eid_vht_capabilities(hapd, tailpos, 0);
e7d0e97b 1182 tailpos = hostapd_eid_vht_operation(hapd, tailpos);
3c417499 1183 tailpos = hostapd_eid_txpower_envelope(hapd, tailpos);
38d9048f 1184 tailpos = hostapd_eid_wb_chsw_wrapper(hapd, tailpos);
e7d0e97b 1185 }
198a942c
JM		 1186#endif /* CONFIG_IEEE80211AC */
1187
1188 tailpos = hostapd_eid_fils_indic(hapd, tailpos, 0);
1189
d512f406
PX		 1190#ifdef CONFIG_IEEE80211AX
1191 if (hapd->iconf->ieee80211ax) {
4a374634
PX		 1192 tailpos = hostapd_eid_he_capab(hapd, tailpos);
1193 tailpos = hostapd_eid_he_operation(hapd, tailpos);
d512f406
PX		 1194 }
1195#endif /* CONFIG_IEEE80211AX */
1196
4a374634
PX		 1197#ifdef CONFIG_IEEE80211AC
1198 if (hapd->conf->vendor_vht)
1199 tailpos = hostapd_eid_vendor_vht(hapd, tailpos);
1200#endif /* CONFIG_IEEE80211AC */
1201
1bc774a1
JM		 1202 /* Wi-Fi Alliance WMM */
1203 tailpos = hostapd_eid_wmm(hapd, tailpos);
1204
ad08c363
JM		 1205#ifdef CONFIG_WPS
1206 if (hapd->conf->wps_state && hapd->wps_beacon_ie) {
14f79386
JM		 1207 os_memcpy(tailpos, wpabuf_head(hapd->wps_beacon_ie),
1208 wpabuf_len(hapd->wps_beacon_ie));
1209 tailpos += wpabuf_len(hapd->wps_beacon_ie);
ad08c363
JM		 1210 }
1211#endif /* CONFIG_WPS */
1212
e44f8bf2
JM		 1213#ifdef CONFIG_P2P
1214 if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_beacon_ie) {
1215 os_memcpy(tailpos, wpabuf_head(hapd->p2p_beacon_ie),
1216 wpabuf_len(hapd->p2p_beacon_ie));
1217 tailpos += wpabuf_len(hapd->p2p_beacon_ie);
1218 }
1219#endif /* CONFIG_P2P */
962473c1
JM		 1220#ifdef CONFIG_P2P_MANAGER
1221 if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) ==
1222 P2P_MANAGE)
1223 tailpos = hostapd_eid_p2p_manage(hapd, tailpos);
1224#endif /* CONFIG_P2P_MANAGER */
e44f8bf2 1225
19a8ad99
JK		 1226#ifdef CONFIG_HS20
1227 tailpos = hostapd_eid_hs20_indication(hapd, tailpos);
a14896e8 1228 tailpos = hostapd_eid_osen(hapd, tailpos);
19a8ad99
JK		 1229#endif /* CONFIG_HS20 */
1230
fb9a1c3e
AS		 1231 tailpos = hostapd_eid_mbo(hapd, tailpos, tail + tail_len - tailpos);
1232
b52f084c
JM		 1233 if (hapd->conf->vendor_elements) {
1234 os_memcpy(tailpos, wpabuf_head(hapd->conf->vendor_elements),
1235 wpabuf_len(hapd->conf->vendor_elements));
1236 tailpos += wpabuf_len(hapd->conf->vendor_elements);
1237 }
1238
6fc6879b
JM		 1239 tail_len = tailpos > tail ? tailpos - tail : 0;
1240
5b99e21a 1241 resp = hostapd_probe_resp_offloads(hapd, &resp_len);
062390ef
JM		 1242#endif /* NEED_AP_MLME */
1243
e44a384b
AO		 1244 os_memset(params, 0, sizeof(*params));
1245 params->head = (u8 *) head;
1246 params->head_len = head_len;
1247 params->tail = tail;
1248 params->tail_len = tail_len;
1249 params->proberesp = resp;
1250 params->proberesp_len = resp_len;
1251 params->dtim_period = hapd->conf->dtim_period;
1252 params->beacon_int = hapd->iconf->beacon_int;
1253 params->basic_rates = hapd->iface->basic_rates;
29483a56
PK		 1254 params->beacon_rate = hapd->iconf->beacon_rate;
1255 params->rate_type = hapd->iconf->rate_type;
e44a384b
AO		 1256 params->ssid = hapd->conf->ssid.ssid;
1257 params->ssid_len = hapd->conf->ssid.ssid_len;
e19c1d2c
JM		 1258 if ((hapd->conf->wpa & (WPA_PROTO_WPA | WPA_PROTO_RSN)) ==
1259 (WPA_PROTO_WPA | WPA_PROTO_RSN))
1260 params->pairwise_ciphers = hapd->conf->wpa_pairwise |
1261 hapd->conf->rsn_pairwise;
1262 else if (hapd->conf->wpa & WPA_PROTO_RSN)
1263 params->pairwise_ciphers = hapd->conf->rsn_pairwise;
1264 else if (hapd->conf->wpa & WPA_PROTO_WPA)
1265 params->pairwise_ciphers = hapd->conf->wpa_pairwise;
e44a384b
AO		 1266 params->group_cipher = hapd->conf->wpa_group;
1267 params->key_mgmt_suites = hapd->conf->wpa_key_mgmt;
1268 params->auth_algs = hapd->conf->auth_algs;
1269 params->wpa_version = hapd->conf->wpa;
1270 params->privacy = hapd->conf->ssid.wep.keys_set || hapd->conf->wpa ||
b11d1d64
JM		 1271 (hapd->conf->ieee802_1x &&
1272 (hapd->conf->default_wep_key_len ||
1273 hapd->conf->individual_wep_key_len));
97a7a0b5
JM		 1274 switch (hapd->conf->ignore_broadcast_ssid) {
1275 case 0:
e44a384b 1276 params->hide_ssid = NO_SSID_HIDING;
97a7a0b5
JM		 1277 break;
1278 case 1:
e44a384b 1279 params->hide_ssid = HIDDEN_SSID_ZERO_LEN;
97a7a0b5
JM		 1280 break;
1281 case 2:
e44a384b 1282 params->hide_ssid = HIDDEN_SSID_ZERO_CONTENTS;
97a7a0b5
JM		 1283 break;
1284 }
e44a384b 1285 params->isolate = hapd->conf->isolate;
8f461b50 1286 params->smps_mode = hapd->iconf->ht_capab & HT_CAP_INFO_SMPS_MASK;
31357268 1287#ifdef NEED_AP_MLME
e44a384b 1288 params->cts_protect = !!(ieee802_11_erp_info(hapd) &
31357268 1289 ERP_INFO_USE_PROTECTION);
e44a384b 1290 params->preamble = hapd->iface->num_sta_no_short_preamble == 0 &&
31357268
JM		 1291 hapd->iconf->preamble == SHORT_PREAMBLE;
1292 if (hapd->iface->current_mode &&
1293 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
e44a384b 1294 params->short_slot_time =
31357268
JM		 1295 hapd->iface->num_sta_no_short_slot_time > 0 ? 0 : 1;
1296 else
e44a384b 1297 params->short_slot_time = -1;
31357268 1298 if (!hapd->iconf->ieee80211n || hapd->conf->disable_11n)
e44a384b 1299 params->ht_opmode = -1;
31357268 1300 else
e44a384b 1301 params->ht_opmode = hapd->iface->ht_op_mode;
31357268 1302#endif /* NEED_AP_MLME */
e44a384b 1303 params->interworking = hapd->conf->interworking;
8a33a63f
JM		 1304 if (hapd->conf->interworking &&
1305 !is_zero_ether_addr(hapd->conf->hessid))
e44a384b
AO		 1306 params->hessid = hapd->conf->hessid;
1307 params->access_network_type = hapd->conf->access_network_type;
1308 params->ap_max_inactivity = hapd->conf->ap_max_inactivity;
0b8bcaa5
EP		 1309#ifdef CONFIG_P2P
1310 params->p2p_go_ctwindow = hapd->iconf->p2p_go_ctwindow;
1311#endif /* CONFIG_P2P */
83421850 1312#ifdef CONFIG_HS20
e44a384b 1313 params->disable_dgaf = hapd->conf->disable_dgaf;
a14896e8
JM		 1314 if (hapd->conf->osen) {
1315 params->privacy = 1;
1316 params->osen = 1;
1317 }
83421850 1318#endif /* CONFIG_HS20 */
34f7c699 1319 params->multicast_to_unicast = hapd->conf->multicast_to_unicast;
b9074912 1320 params->pbss = hapd->conf->pbss;
e44a384b
AO		 1321 return 0;
1322}
1323
1324
1325void ieee802_11_free_ap_params(struct wpa_driver_ap_params *params)
1326{
1327 os_free(params->tail);
1328 params->tail = NULL;
1329 os_free(params->head);
1330 params->head = NULL;
1331 os_free(params->proberesp);
1332 params->proberesp = NULL;
1333}
1334
1335
bad5cdf4 1336int ieee802_11_set_beacon(struct hostapd_data *hapd)
e44a384b
AO		 1337{
1338 struct wpa_driver_ap_params params;
196c9c7c
PX		 1339 struct hostapd_freq_params freq;
1340 struct hostapd_iface *iface = hapd->iface;
1341 struct hostapd_config *iconf = iface->conf;
e44a384b 1342 struct wpabuf *beacon, *proberesp, *assocresp;
bad5cdf4 1343 int res, ret = -1;
e44a384b 1344
6782b684 1345 if (hapd->csa_in_progress) {
bf281c12 1346 wpa_printf(MSG_ERROR, "Cannot set beacons during CSA period");
bad5cdf4 1347 return -1;
bf281c12
AO		 1348 }
1349
e44a384b
AO		 1350 hapd->beacon_set_done = 1;
1351
1352 if (ieee802_11_build_ap_params(hapd, &params) < 0)
bad5cdf4 1353 return -1;
e44a384b
AO		 1354
1355 if (hostapd_build_ap_extra_ies(hapd, &beacon, &proberesp, &assocresp) <
1356 0)
1357 goto fail;
1358
1359 params.beacon_ies = beacon;
1360 params.proberesp_ies = proberesp;
1361 params.assocresp_ies = assocresp;
f33c8606
JM		 1362 params.reenable = hapd->reenable_beacon;
1363 hapd->reenable_beacon = 0;
e44a384b 1364
196c9c7c
PX		 1365 if (iface->current_mode &&
1366 hostapd_set_freq_params(&freq, iconf->hw_mode, iface->freq,
1367 iconf->channel, iconf->ieee80211n,
1368 iconf->ieee80211ac,
1369 iconf->secondary_channel,
1370 iconf->vht_oper_chwidth,
1371 iconf->vht_oper_centr_freq_seg0_idx,
1372 iconf->vht_oper_centr_freq_seg1_idx,
1373 iface->current_mode->vht_capab) == 0)
1374 params.freq = &freq;
1375
bad5cdf4 1376 res = hostapd_drv_set_ap(hapd, &params);
fb91db56 1377 hostapd_free_ap_extra_ies(hapd, beacon, proberesp, assocresp);
bad5cdf4
JM		 1378 if (res)
1379 wpa_printf(MSG_ERROR, "Failed to set beacon parameters");
1380 else
1381 ret = 0;
e44a384b
AO		 1382fail:
1383 ieee802_11_free_ap_params(&params);
bad5cdf4 1384 return ret;
6fc6879b
JM		 1385}
1386
1387
bad5cdf4 1388int ieee802_11_set_beacons(struct hostapd_iface *iface)
6fc6879b
JM		 1389{
1390 size_t i;
bad5cdf4
JM		 1391 int ret = 0;
1392
77a3e796 1393 for (i = 0; i < iface->num_bss; i++) {
bad5cdf4
JM		 1394 if (iface->bss[i]->started &&
1395 ieee802_11_set_beacon(iface->bss[i]) < 0)
1396 ret = -1;
77a3e796 1397 }
bad5cdf4
JM		 1398
1399 return ret;
6fc6879b
JM		 1400}
1401
370b0761
LC		 1402
1403/* only update beacons if started */
bad5cdf4 1404int ieee802_11_update_beacons(struct hostapd_iface *iface)
370b0761
LC		 1405{
1406 size_t i;
bad5cdf4
JM		 1407 int ret = 0;
1408
1409 for (i = 0; i < iface->num_bss; i++) {
1410 if (iface->bss[i]->beacon_set_done && iface->bss[i]->started &&
1411 ieee802_11_set_beacon(iface->bss[i]) < 0)
1412 ret = -1;
1413 }
1414
1415 return ret;
370b0761
LC		 1416}
1417
6fc6879b 1418#endif /* CONFIG_NATIVE_WINDOWS */
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