2 * WPA Supplicant - Client mode MLME
3 * Copyright (c) 2003-2008, Jouni Malinen <j@w1.fi>
4 * Copyright (c) 2004, Instant802 Networks, Inc.
5 * Copyright (c) 2005-2006, Devicescape Software, Inc.
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.
11 * Alternatively, this software may be distributed under the terms of BSD
14 * See README and COPYING for more details.
21 #include "config_ssid.h"
22 #include "wpa_supplicant_i.h"
26 #include "ieee802_11_defs.h"
27 #include "ieee802_11_common.h"
31 /* Timeouts and intervals in milliseconds */
32 #define IEEE80211_AUTH_TIMEOUT (200)
33 #define IEEE80211_AUTH_MAX_TRIES 3
34 #define IEEE80211_ASSOC_TIMEOUT (200)
35 #define IEEE80211_ASSOC_MAX_TRIES 3
36 #define IEEE80211_MONITORING_INTERVAL (2000)
37 #define IEEE80211_PROBE_INTERVAL (60000)
38 #define IEEE80211_RETRY_AUTH_INTERVAL (1000)
39 #define IEEE80211_SCAN_INTERVAL (2000)
40 #define IEEE80211_SCAN_INTERVAL_SLOW (15000)
41 #define IEEE80211_IBSS_JOIN_TIMEOUT (20000)
43 #define IEEE80211_PROBE_DELAY (33)
44 #define IEEE80211_CHANNEL_TIME (33)
45 #define IEEE80211_PASSIVE_CHANNEL_TIME (200)
46 #define IEEE80211_SCAN_RESULT_EXPIRE (10000)
47 #define IEEE80211_IBSS_MERGE_INTERVAL (30000)
48 #define IEEE80211_IBSS_INACTIVITY_LIMIT (60000)
50 #define IEEE80211_IBSS_MAX_STA_ENTRIES 128
53 #define IEEE80211_FC(type, stype) host_to_le16((type << 2) | (stype << 4))
56 struct ieee80211_sta_bss {
57 struct ieee80211_sta_bss *next;
58 struct ieee80211_sta_bss *hnext;
61 u8 ssid[MAX_SSID_LEN];
63 u16 capability; /* host byte order */
78 #define IEEE80211_MAX_SUPP_RATES 32
79 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
80 size_t supp_rates_len;
85 struct os_time last_update;
89 static void ieee80211_send_probe_req(struct wpa_supplicant *wpa_s,
91 const u8 *ssid, size_t ssid_len);
92 static struct ieee80211_sta_bss *
93 ieee80211_bss_get(struct wpa_supplicant *wpa_s, const u8 *bssid);
94 static int ieee80211_sta_find_ibss(struct wpa_supplicant *wpa_s);
95 static int ieee80211_sta_wep_configured(struct wpa_supplicant *wpa_s);
96 static void ieee80211_sta_timer(void *eloop_ctx, void *timeout_ctx);
97 static void ieee80211_sta_scan_timer(void *eloop_ctx, void *timeout_ctx);
98 static void ieee80211_build_tspec(struct wpabuf *buf);
101 static int ieee80211_sta_set_channel(struct wpa_supplicant *wpa_s,
102 hostapd_hw_mode phymode, int chan,
106 struct hostapd_hw_modes *mode;
108 for (i = 0; i < wpa_s->mlme.num_modes; i++) {
109 mode = &wpa_s->mlme.modes[i];
110 if (mode->mode == phymode) {
111 wpa_s->mlme.curr_rates = mode->rates;
112 wpa_s->mlme.num_curr_rates = mode->num_rates;
117 return wpa_drv_set_channel(wpa_s, phymode, chan, freq);
121 static int ecw2cw(int ecw)
132 static void ieee80211_sta_wmm_params(struct wpa_supplicant *wpa_s,
133 u8 *wmm_param, size_t wmm_param_len)
140 if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
142 count = wmm_param[6] & 0x0f;
143 if (count == wpa_s->mlme.wmm_last_param_set)
145 wpa_s->mlme.wmm_last_param_set = count;
148 left = wmm_param_len - 8;
151 for (; left >= 4; left -= 4, pos += 4) {
152 int aci = (pos[0] >> 5) & 0x03;
153 int acm = (pos[0] >> 4) & 0x01;
154 int aifs, cw_max, cw_min, burst_time;
159 wmm_acm |= BIT(1) | BIT(2); /* BK/- */
163 wmm_acm |= BIT(4) | BIT(5); /* CL/VI */
167 wmm_acm |= BIT(6) | BIT(7); /* VO/NC */
172 wmm_acm |= BIT(0) | BIT(3); /* BE/EE */
176 aifs = pos[0] & 0x0f;
177 cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
178 cw_min = ecw2cw(pos[1] & 0x0f);
179 /* TXOP is in units of 32 usec; burst_time in 0.1 ms */
180 burst_time = (pos[2] | (pos[3] << 8)) * 32 / 100;
181 wpa_printf(MSG_DEBUG, "MLME: WMM aci=%d acm=%d aifs=%d "
182 "cWmin=%d cWmax=%d burst=%d",
183 aci, acm, aifs, cw_min, cw_max, burst_time);
184 /* TODO: driver configuration */
189 static void ieee80211_set_associated(struct wpa_supplicant *wpa_s, int assoc)
191 if (wpa_s->mlme.associated == assoc && !assoc)
194 wpa_s->mlme.associated = assoc;
197 union wpa_event_data data;
198 os_memset(&data, 0, sizeof(data));
199 wpa_s->mlme.prev_bssid_set = 1;
200 os_memcpy(wpa_s->mlme.prev_bssid, wpa_s->bssid, ETH_ALEN);
201 data.assoc_info.req_ies = wpa_s->mlme.assocreq_ies;
202 data.assoc_info.req_ies_len = wpa_s->mlme.assocreq_ies_len;
203 data.assoc_info.resp_ies = wpa_s->mlme.assocresp_ies;
204 data.assoc_info.resp_ies_len = wpa_s->mlme.assocresp_ies_len;
205 wpa_supplicant_event(wpa_s, EVENT_ASSOC, &data);
207 wpa_supplicant_event(wpa_s, EVENT_DISASSOC, NULL);
209 os_get_time(&wpa_s->mlme.last_probe);
213 static int ieee80211_sta_tx(struct wpa_supplicant *wpa_s, const u8 *buf,
216 return wpa_drv_send_mlme(wpa_s, buf, len);
220 static void ieee80211_send_auth(struct wpa_supplicant *wpa_s,
221 int transaction, u8 *extra, size_t extra_len,
226 struct ieee80211_mgmt *mgmt;
228 buf = os_malloc(sizeof(*mgmt) + 6 + extra_len);
230 wpa_printf(MSG_DEBUG, "MLME: failed to allocate buffer for "
235 mgmt = (struct ieee80211_mgmt *) buf;
237 os_memset(mgmt, 0, 24 + 6);
238 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
241 mgmt->frame_control |= host_to_le16(WLAN_FC_ISWEP);
242 os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
243 os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
244 os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
245 mgmt->u.auth.auth_alg = host_to_le16(wpa_s->mlme.auth_alg);
246 mgmt->u.auth.auth_transaction = host_to_le16(transaction);
247 wpa_s->mlme.auth_transaction = transaction + 1;
248 mgmt->u.auth.status_code = host_to_le16(0);
250 os_memcpy(buf + len, extra, extra_len);
254 ieee80211_sta_tx(wpa_s, buf, len);
259 static void ieee80211_reschedule_timer(struct wpa_supplicant *wpa_s, int ms)
261 eloop_cancel_timeout(ieee80211_sta_timer, wpa_s, NULL);
262 eloop_register_timeout(ms / 1000, 1000 * (ms % 1000),
263 ieee80211_sta_timer, wpa_s, NULL);
267 static void ieee80211_authenticate(struct wpa_supplicant *wpa_s)
272 wpa_s->mlme.auth_tries++;
273 if (wpa_s->mlme.auth_tries > IEEE80211_AUTH_MAX_TRIES) {
274 wpa_printf(MSG_DEBUG, "MLME: authentication with AP " MACSTR
275 " timed out", MAC2STR(wpa_s->bssid));
279 wpa_s->mlme.state = IEEE80211_AUTHENTICATE;
280 wpa_printf(MSG_DEBUG, "MLME: authenticate with AP " MACSTR,
281 MAC2STR(wpa_s->bssid));
286 #ifdef CONFIG_IEEE80211R
287 if ((wpa_s->mlme.key_mgmt == KEY_MGMT_FT_802_1X ||
288 wpa_s->mlme.key_mgmt == KEY_MGMT_FT_PSK) &&
289 wpa_s->mlme.ft_ies) {
290 struct ieee80211_sta_bss *bss;
291 struct rsn_mdie *mdie = NULL;
292 bss = ieee80211_bss_get(wpa_s, wpa_s->bssid);
293 if (bss && bss->mdie_len >= 2 + sizeof(*mdie))
294 mdie = (struct rsn_mdie *) (bss->mdie + 2);
296 os_memcmp(mdie->mobility_domain, wpa_s->mlme.current_md,
297 MOBILITY_DOMAIN_ID_LEN) == 0) {
298 wpa_printf(MSG_DEBUG, "MLME: Trying to use FT "
300 wpa_s->mlme.auth_alg = WLAN_AUTH_FT;
301 extra = wpa_s->mlme.ft_ies;
302 extra_len = wpa_s->mlme.ft_ies_len;
305 #endif /* CONFIG_IEEE80211R */
307 ieee80211_send_auth(wpa_s, 1, extra, extra_len, 0);
309 ieee80211_reschedule_timer(wpa_s, IEEE80211_AUTH_TIMEOUT);
313 static void ieee80211_send_assoc(struct wpa_supplicant *wpa_s)
315 struct ieee80211_mgmt *mgmt;
319 struct ieee80211_sta_bss *bss;
323 if (wpa_s->mlme.curr_rates == NULL) {
324 wpa_printf(MSG_DEBUG, "MLME: curr_rates not set for assoc");
328 buflen = sizeof(*mgmt) + 200 + wpa_s->mlme.extra_ie_len +
329 wpa_s->mlme.ssid_len;
330 #ifdef CONFIG_IEEE80211R
331 if (wpa_s->mlme.ft_ies)
332 buflen += wpa_s->mlme.ft_ies_len;
333 #endif /* CONFIG_IEEE80211R */
334 buf = os_malloc(buflen);
336 wpa_printf(MSG_DEBUG, "MLME: failed to allocate buffer for "
342 capab = wpa_s->mlme.capab;
343 if (wpa_s->mlme.phymode == HOSTAPD_MODE_IEEE80211G) {
344 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME |
345 WLAN_CAPABILITY_SHORT_PREAMBLE;
347 bss = ieee80211_bss_get(wpa_s, wpa_s->bssid);
349 if (bss->capability & WLAN_CAPABILITY_PRIVACY)
350 capab |= WLAN_CAPABILITY_PRIVACY;
356 mgmt = (struct ieee80211_mgmt *) buf;
358 os_memset(mgmt, 0, 24);
359 os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
360 os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
361 os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
363 if (wpa_s->mlme.prev_bssid_set) {
365 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
366 WLAN_FC_STYPE_REASSOC_REQ);
367 mgmt->u.reassoc_req.capab_info = host_to_le16(capab);
368 mgmt->u.reassoc_req.listen_interval = host_to_le16(1);
369 os_memcpy(mgmt->u.reassoc_req.current_ap,
370 wpa_s->mlme.prev_bssid,
374 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
375 WLAN_FC_STYPE_ASSOC_REQ);
376 mgmt->u.assoc_req.capab_info = host_to_le16(capab);
377 mgmt->u.assoc_req.listen_interval = host_to_le16(1);
381 ies = pos = buf + blen;
382 blen += 2 + wpa_s->mlme.ssid_len;
383 *pos++ = WLAN_EID_SSID;
384 *pos++ = wpa_s->mlme.ssid_len;
385 os_memcpy(pos, wpa_s->mlme.ssid, wpa_s->mlme.ssid_len);
387 len = wpa_s->mlme.num_curr_rates;
392 *pos++ = WLAN_EID_SUPP_RATES;
394 for (i = 0; i < len; i++) {
395 int rate = wpa_s->mlme.curr_rates[i].rate;
396 *pos++ = (u8) (rate / 5);
399 if (wpa_s->mlme.num_curr_rates > len) {
401 blen += wpa_s->mlme.num_curr_rates - len + 2;
402 *pos++ = WLAN_EID_EXT_SUPP_RATES;
403 *pos++ = wpa_s->mlme.num_curr_rates - len;
404 for (i = len; i < wpa_s->mlme.num_curr_rates; i++) {
405 int rate = wpa_s->mlme.curr_rates[i].rate;
406 *pos++ = (u8) (rate / 5);
410 if (wpa_s->mlme.extra_ie && wpa_s->mlme.auth_alg != WLAN_AUTH_FT) {
412 blen += wpa_s->mlme.extra_ie_len;
413 os_memcpy(pos, wpa_s->mlme.extra_ie, wpa_s->mlme.extra_ie_len);
416 #ifdef CONFIG_IEEE80211R
417 if ((wpa_s->mlme.key_mgmt == KEY_MGMT_FT_802_1X ||
418 wpa_s->mlme.key_mgmt == KEY_MGMT_FT_PSK) &&
419 wpa_s->mlme.auth_alg != WLAN_AUTH_FT &&
421 bss->mdie_len >= 2 + sizeof(struct rsn_mdie) &&
422 bss->mdie[1] >= sizeof(struct rsn_mdie)) {
424 blen += 2 + sizeof(struct rsn_mdie);
425 *pos++ = WLAN_EID_MOBILITY_DOMAIN;
426 *pos++ = sizeof(struct rsn_mdie);
427 os_memcpy(pos, bss->mdie + 2, MOBILITY_DOMAIN_ID_LEN);
428 pos += MOBILITY_DOMAIN_ID_LEN;
429 *pos++ = 0; /* FIX: copy from the target AP's MDIE */
432 if ((wpa_s->mlme.key_mgmt == KEY_MGMT_FT_802_1X ||
433 wpa_s->mlme.key_mgmt == KEY_MGMT_FT_PSK) &&
434 wpa_s->mlme.auth_alg == WLAN_AUTH_FT && wpa_s->mlme.ft_ies) {
436 os_memcpy(pos, wpa_s->mlme.ft_ies, wpa_s->mlme.ft_ies_len);
437 pos += wpa_s->mlme.ft_ies_len;
438 blen += wpa_s->mlme.ft_ies_len;
440 #endif /* CONFIG_IEEE80211R */
442 if (wmm && wpa_s->mlme.wmm_enabled) {
445 *pos++ = WLAN_EID_VENDOR_SPECIFIC;
446 *pos++ = 7; /* len */
447 *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */
450 *pos++ = 2; /* WMM */
451 *pos++ = 0; /* WMM info */
452 *pos++ = 1; /* WMM ver */
456 os_free(wpa_s->mlme.assocreq_ies);
457 wpa_s->mlme.assocreq_ies_len = (buf + blen) - ies;
458 wpa_s->mlme.assocreq_ies = os_malloc(wpa_s->mlme.assocreq_ies_len);
459 if (wpa_s->mlme.assocreq_ies) {
460 os_memcpy(wpa_s->mlme.assocreq_ies, ies,
461 wpa_s->mlme.assocreq_ies_len);
464 ieee80211_sta_tx(wpa_s, buf, blen);
469 static void ieee80211_send_deauth(struct wpa_supplicant *wpa_s, u16 reason)
473 struct ieee80211_mgmt *mgmt;
475 buf = os_zalloc(sizeof(*mgmt));
477 wpa_printf(MSG_DEBUG, "MLME: failed to allocate buffer for "
482 mgmt = (struct ieee80211_mgmt *) buf;
484 os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
485 os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
486 os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
487 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
488 WLAN_FC_STYPE_DEAUTH);
490 mgmt->u.deauth.reason_code = host_to_le16(reason);
492 ieee80211_sta_tx(wpa_s, buf, len);
497 static void ieee80211_send_disassoc(struct wpa_supplicant *wpa_s, u16 reason)
501 struct ieee80211_mgmt *mgmt;
503 buf = os_zalloc(sizeof(*mgmt));
505 wpa_printf(MSG_DEBUG, "MLME: failed to allocate buffer for "
510 mgmt = (struct ieee80211_mgmt *) buf;
512 os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
513 os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
514 os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
515 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
516 WLAN_FC_STYPE_DISASSOC);
518 mgmt->u.disassoc.reason_code = host_to_le16(reason);
520 ieee80211_sta_tx(wpa_s, buf, len);
525 static int ieee80211_privacy_mismatch(struct wpa_supplicant *wpa_s)
527 struct ieee80211_sta_bss *bss;
530 if (wpa_s->mlme.mixed_cell ||
531 wpa_s->mlme.key_mgmt != KEY_MGMT_NONE)
534 bss = ieee80211_bss_get(wpa_s, wpa_s->bssid);
538 if (ieee80211_sta_wep_configured(wpa_s) !=
539 !!(bss->capability & WLAN_CAPABILITY_PRIVACY))
546 static void ieee80211_associate(struct wpa_supplicant *wpa_s)
548 wpa_s->mlme.assoc_tries++;
549 if (wpa_s->mlme.assoc_tries > IEEE80211_ASSOC_MAX_TRIES) {
550 wpa_printf(MSG_DEBUG, "MLME: association with AP " MACSTR
551 " timed out", MAC2STR(wpa_s->bssid));
555 wpa_s->mlme.state = IEEE80211_ASSOCIATE;
556 wpa_printf(MSG_DEBUG, "MLME: associate with AP " MACSTR,
557 MAC2STR(wpa_s->bssid));
558 if (ieee80211_privacy_mismatch(wpa_s)) {
559 wpa_printf(MSG_DEBUG, "MLME: mismatch in privacy "
560 "configuration and mixed-cell disabled - abort "
565 ieee80211_send_assoc(wpa_s);
567 ieee80211_reschedule_timer(wpa_s, IEEE80211_ASSOC_TIMEOUT);
571 static void ieee80211_associated(struct wpa_supplicant *wpa_s)
575 /* TODO: start monitoring current AP signal quality and number of
576 * missed beacons. Scan other channels every now and then and search
578 /* TODO: remove expired BSSes */
580 wpa_s->mlme.state = IEEE80211_ASSOCIATED;
583 sta = sta_info_get(local, wpa_s->bssid);
585 wpa_printf(MSG_DEBUG "MLME: No STA entry for own AP " MACSTR,
586 MAC2STR(wpa_s->bssid));
590 if (time_after(jiffies,
591 sta->last_rx + IEEE80211_MONITORING_INTERVAL)) {
592 if (wpa_s->mlme.probereq_poll) {
593 wpa_printf(MSG_DEBUG "MLME: No ProbeResp from "
594 "current AP " MACSTR " - assume "
596 MAC2STR(wpa_s->bssid));
599 ieee80211_send_probe_req(
601 wpa_s->mlme.scan_ssid,
602 wpa_s->mlme.scan_ssid_len);
603 wpa_s->mlme.probereq_poll = 1;
606 wpa_s->mlme.probereq_poll = 0;
607 if (time_after(jiffies, wpa_s->mlme.last_probe +
608 IEEE80211_PROBE_INTERVAL)) {
609 wpa_s->mlme.last_probe = jiffies;
610 ieee80211_send_probe_req(wpa_s->bssid,
612 wpa_s->mlme.ssid_len);
615 sta_info_release(local, sta);
621 wpa_supplicant_event(wpa_s, EVENT_DISASSOC, NULL);
622 ieee80211_reschedule_timer(wpa_s,
623 IEEE80211_MONITORING_INTERVAL +
626 ieee80211_reschedule_timer(wpa_s,
627 IEEE80211_MONITORING_INTERVAL);
632 static void ieee80211_send_probe_req(struct wpa_supplicant *wpa_s,
634 const u8 *ssid, size_t ssid_len)
638 struct ieee80211_mgmt *mgmt;
639 u8 *pos, *supp_rates;
640 u8 *esupp_rates = NULL;
643 buf = os_malloc(sizeof(*mgmt) + 200 + wpa_s->mlme.extra_probe_ie_len);
645 wpa_printf(MSG_DEBUG, "MLME: failed to allocate buffer for "
650 mgmt = (struct ieee80211_mgmt *) buf;
652 os_memset(mgmt, 0, 24);
653 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
654 WLAN_FC_STYPE_PROBE_REQ);
655 os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
657 os_memcpy(mgmt->da, dst, ETH_ALEN);
658 os_memcpy(mgmt->bssid, dst, ETH_ALEN);
660 os_memset(mgmt->da, 0xff, ETH_ALEN);
661 os_memset(mgmt->bssid, 0xff, ETH_ALEN);
665 *pos++ = WLAN_EID_SSID;
667 os_memcpy(pos, ssid, ssid_len);
669 supp_rates = buf + len;
671 supp_rates[0] = WLAN_EID_SUPP_RATES;
673 for (i = 0; i < wpa_s->mlme.num_curr_rates; i++) {
674 struct hostapd_rate_data *rate = &wpa_s->mlme.curr_rates[i];
679 } else if (supp_rates[1] == 8) {
681 esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES;
683 pos = &esupp_rates[2];
690 *pos++ = rate->rate / 5;
693 if (wpa_s->mlme.extra_probe_ie) {
694 os_memcpy(pos, wpa_s->mlme.extra_probe_ie,
695 wpa_s->mlme.extra_probe_ie_len);
696 len += wpa_s->mlme.extra_probe_ie_len;
699 ieee80211_sta_tx(wpa_s, buf, len);
704 static int ieee80211_sta_wep_configured(struct wpa_supplicant *wpa_s)
707 if (sdata == NULL || sdata->default_key == NULL ||
708 sdata->default_key->alg != ALG_WEP)
717 static void ieee80211_auth_completed(struct wpa_supplicant *wpa_s)
719 wpa_printf(MSG_DEBUG, "MLME: authenticated");
720 wpa_s->mlme.authenticated = 1;
721 ieee80211_associate(wpa_s);
725 static void ieee80211_auth_challenge(struct wpa_supplicant *wpa_s,
726 struct ieee80211_mgmt *mgmt,
728 struct ieee80211_rx_status *rx_status)
731 struct ieee802_11_elems elems;
733 wpa_printf(MSG_DEBUG, "MLME: replying to auth challenge");
734 pos = mgmt->u.auth.variable;
735 if (ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems, 0)
737 wpa_printf(MSG_DEBUG, "MLME: failed to parse Auth(challenge)");
740 if (elems.challenge == NULL) {
741 wpa_printf(MSG_DEBUG, "MLME: no challenge IE in shared key "
745 ieee80211_send_auth(wpa_s, 3, elems.challenge - 2,
746 elems.challenge_len + 2, 1);
750 static void ieee80211_rx_mgmt_auth(struct wpa_supplicant *wpa_s,
751 struct ieee80211_mgmt *mgmt,
753 struct ieee80211_rx_status *rx_status)
755 struct wpa_ssid *ssid = wpa_s->current_ssid;
756 u16 auth_alg, auth_transaction, status_code;
759 adhoc = ssid && ssid->mode == 1;
761 if (wpa_s->mlme.state != IEEE80211_AUTHENTICATE && !adhoc) {
762 wpa_printf(MSG_DEBUG, "MLME: authentication frame received "
763 "from " MACSTR ", but not in authenticate state - "
764 "ignored", MAC2STR(mgmt->sa));
769 wpa_printf(MSG_DEBUG, "MLME: too short (%lu) authentication "
770 "frame received from " MACSTR " - ignored",
771 (unsigned long) len, MAC2STR(mgmt->sa));
775 if (!adhoc && os_memcmp(wpa_s->bssid, mgmt->sa, ETH_ALEN) != 0) {
776 wpa_printf(MSG_DEBUG, "MLME: authentication frame received "
777 "from unknown AP (SA=" MACSTR " BSSID=" MACSTR
779 MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid));
783 if (adhoc && os_memcmp(wpa_s->bssid, mgmt->bssid, ETH_ALEN) != 0) {
784 wpa_printf(MSG_DEBUG, "MLME: authentication frame received "
785 "from unknown BSSID (SA=" MACSTR " BSSID=" MACSTR
787 MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid));
791 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
792 auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
793 status_code = le_to_host16(mgmt->u.auth.status_code);
795 wpa_printf(MSG_DEBUG, "MLME: RX authentication from " MACSTR
796 " (alg=%d transaction=%d status=%d)",
797 MAC2STR(mgmt->sa), auth_alg, auth_transaction, status_code);
800 /* IEEE 802.11 standard does not require authentication in IBSS
801 * networks and most implementations do not seem to use it.
802 * However, try to reply to authentication attempts if someone
803 * has actually implemented this.
804 * TODO: Could implement shared key authentication. */
805 if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1) {
806 wpa_printf(MSG_DEBUG, "MLME: unexpected IBSS "
807 "authentication frame (alg=%d "
809 auth_alg, auth_transaction);
812 ieee80211_send_auth(wpa_s, 2, NULL, 0, 0);
815 if (auth_alg != wpa_s->mlme.auth_alg ||
816 auth_transaction != wpa_s->mlme.auth_transaction) {
817 wpa_printf(MSG_DEBUG, "MLME: unexpected authentication frame "
818 "(alg=%d transaction=%d)",
819 auth_alg, auth_transaction);
823 if (status_code != WLAN_STATUS_SUCCESS) {
824 wpa_printf(MSG_DEBUG, "MLME: AP denied authentication "
825 "(auth_alg=%d code=%d)", wpa_s->mlme.auth_alg,
827 if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
828 const int num_algs = 3;
831 algs[0] = algs[1] = algs[2] = 0xff;
832 if (wpa_s->mlme.auth_algs & IEEE80211_AUTH_ALG_OPEN)
833 algs[0] = WLAN_AUTH_OPEN;
834 if (wpa_s->mlme.auth_algs &
835 IEEE80211_AUTH_ALG_SHARED_KEY)
836 algs[1] = WLAN_AUTH_SHARED_KEY;
837 if (wpa_s->mlme.auth_algs & IEEE80211_AUTH_ALG_LEAP)
838 algs[2] = WLAN_AUTH_LEAP;
839 if (wpa_s->mlme.auth_alg == WLAN_AUTH_OPEN)
841 else if (wpa_s->mlme.auth_alg == WLAN_AUTH_SHARED_KEY)
845 for (i = 0; i < num_algs; i++) {
849 if (algs[pos] == wpa_s->mlme.auth_alg ||
852 if (algs[pos] == WLAN_AUTH_SHARED_KEY &&
853 !ieee80211_sta_wep_configured(wpa_s))
855 wpa_s->mlme.auth_alg = algs[pos];
856 wpa_printf(MSG_DEBUG, "MLME: set auth_alg=%d "
858 wpa_s->mlme.auth_alg);
865 switch (wpa_s->mlme.auth_alg) {
868 ieee80211_auth_completed(wpa_s);
870 case WLAN_AUTH_SHARED_KEY:
871 if (wpa_s->mlme.auth_transaction == 4)
872 ieee80211_auth_completed(wpa_s);
874 ieee80211_auth_challenge(wpa_s, mgmt, len,
877 #ifdef CONFIG_IEEE80211R
880 union wpa_event_data data;
881 struct wpabuf *ric = NULL;
882 os_memset(&data, 0, sizeof(data));
883 data.ft_ies.ies = mgmt->u.auth.variable;
884 data.ft_ies.ies_len = len -
885 (mgmt->u.auth.variable - (u8 *) mgmt);
886 os_memcpy(data.ft_ies.target_ap, wpa_s->bssid, ETH_ALEN);
887 if (os_strcmp(wpa_s->driver->name, "test") == 0 &&
888 wpa_s->mlme.wmm_enabled) {
889 ric = wpabuf_alloc(200);
891 /* Build simple RIC-Request: RDIE | TSPEC */
893 /* RIC Data (RDIE) */
894 wpabuf_put_u8(ric, WLAN_EID_RIC_DATA);
895 wpabuf_put_u8(ric, 4);
896 wpabuf_put_u8(ric, 0); /* RDIE Identifier */
897 wpabuf_put_u8(ric, 1); /* Resource Descriptor
899 wpabuf_put_le16(ric, 0); /* Status Code */
902 ieee80211_build_tspec(ric);
904 data.ft_ies.ric_ies = wpabuf_head(ric);
905 data.ft_ies.ric_ies_len = wpabuf_len(ric);
909 wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &data);
911 ieee80211_auth_completed(wpa_s);
914 #endif /* CONFIG_IEEE80211R */
919 static void ieee80211_rx_mgmt_deauth(struct wpa_supplicant *wpa_s,
920 struct ieee80211_mgmt *mgmt,
922 struct ieee80211_rx_status *rx_status)
927 wpa_printf(MSG_DEBUG, "MLME: too short (%lu) deauthentication "
928 "frame received from " MACSTR " - ignored",
929 (unsigned long) len, MAC2STR(mgmt->sa));
933 if (os_memcmp(wpa_s->bssid, mgmt->sa, ETH_ALEN) != 0) {
934 wpa_printf(MSG_DEBUG, "MLME: deauthentication frame received "
935 "from unknown AP (SA=" MACSTR " BSSID=" MACSTR
937 MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid));
941 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
943 wpa_printf(MSG_DEBUG, "MLME: RX deauthentication from " MACSTR
944 " (reason=%d)", MAC2STR(mgmt->sa), reason_code);
946 if (wpa_s->mlme.authenticated)
947 wpa_printf(MSG_DEBUG, "MLME: deauthenticated");
949 if (wpa_s->mlme.state == IEEE80211_AUTHENTICATE ||
950 wpa_s->mlme.state == IEEE80211_ASSOCIATE ||
951 wpa_s->mlme.state == IEEE80211_ASSOCIATED) {
952 wpa_s->mlme.state = IEEE80211_AUTHENTICATE;
953 ieee80211_reschedule_timer(wpa_s,
954 IEEE80211_RETRY_AUTH_INTERVAL);
957 ieee80211_set_associated(wpa_s, 0);
958 wpa_s->mlme.authenticated = 0;
962 static void ieee80211_rx_mgmt_disassoc(struct wpa_supplicant *wpa_s,
963 struct ieee80211_mgmt *mgmt,
965 struct ieee80211_rx_status *rx_status)
970 wpa_printf(MSG_DEBUG, "MLME: too short (%lu) disassociation "
971 "frame received from " MACSTR " - ignored",
972 (unsigned long) len, MAC2STR(mgmt->sa));
976 if (os_memcmp(wpa_s->bssid, mgmt->sa, ETH_ALEN) != 0) {
977 wpa_printf(MSG_DEBUG, "MLME: disassociation frame received "
978 "from unknown AP (SA=" MACSTR " BSSID=" MACSTR
980 MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid));
984 reason_code = le_to_host16(mgmt->u.disassoc.reason_code);
986 wpa_printf(MSG_DEBUG, "MLME: RX disassociation from " MACSTR
987 " (reason=%d)", MAC2STR(mgmt->sa), reason_code);
989 if (wpa_s->mlme.associated)
990 wpa_printf(MSG_DEBUG, "MLME: disassociated");
992 if (wpa_s->mlme.state == IEEE80211_ASSOCIATED) {
993 wpa_s->mlme.state = IEEE80211_ASSOCIATE;
994 ieee80211_reschedule_timer(wpa_s,
995 IEEE80211_RETRY_AUTH_INTERVAL);
998 ieee80211_set_associated(wpa_s, 0);
1002 static int ieee80211_ft_assoc_resp(struct wpa_supplicant *wpa_s,
1003 struct ieee802_11_elems *elems)
1005 #ifdef CONFIG_IEEE80211R
1006 const u8 *mobility_domain = NULL;
1007 const u8 *r0kh_id = NULL;
1008 size_t r0kh_id_len = 0;
1009 const u8 *r1kh_id = NULL;
1010 struct rsn_ftie *hdr;
1011 const u8 *pos, *end;
1013 if (elems->mdie && elems->mdie_len >= MOBILITY_DOMAIN_ID_LEN)
1014 mobility_domain = elems->mdie;
1015 if (elems->ftie && elems->ftie_len >= sizeof(struct rsn_ftie)) {
1016 end = elems->ftie + elems->ftie_len;
1017 hdr = (struct rsn_ftie *) elems->ftie;
1018 pos = (const u8 *) (hdr + 1);
1019 while (pos + 1 < end) {
1020 if (pos + 2 + pos[1] > end)
1022 if (pos[0] == FTIE_SUBELEM_R1KH_ID &&
1023 pos[1] == FT_R1KH_ID_LEN)
1025 else if (pos[0] == FTIE_SUBELEM_R0KH_ID &&
1026 pos[1] >= 1 && pos[1] <= FT_R0KH_ID_MAX_LEN) {
1028 r0kh_id_len = pos[1];
1033 return wpa_sm_set_ft_params(wpa_s->wpa, mobility_domain, r0kh_id,
1034 r0kh_id_len, r1kh_id);
1035 #else /* CONFIG_IEEE80211R */
1037 #endif /* CONFIG_IEEE80211R */
1041 static void ieee80211_build_tspec(struct wpabuf *buf)
1043 struct wmm_tspec_element *tspec;
1046 tspec = wpabuf_put(buf, sizeof(*tspec));
1047 tspec->eid = WLAN_EID_VENDOR_SPECIFIC;
1048 tspec->length = sizeof(*tspec) - 2;
1049 tspec->oui[0] = 0x00;
1050 tspec->oui[1] = 0x50;
1051 tspec->oui[2] = 0xf2;
1052 tspec->oui_type = 2;
1053 tspec->oui_subtype = 2;
1058 tspec->ts_info[0] = (tid << 1) |
1059 (WMM_TSPEC_DIRECTION_BI_DIRECTIONAL << 5) |
1061 tspec->ts_info[1] = up << 3;
1062 tspec->nominal_msdu_size = host_to_le16(1530);
1063 tspec->mean_data_rate = host_to_le32(128000); /* bits per second */
1064 tspec->minimum_phy_rate = host_to_le32(6000000);
1065 tspec->surplus_bandwidth_allowance = host_to_le16(0x3000); /* 150% */
1069 static void ieee80211_tx_addts(struct wpa_supplicant *wpa_s)
1072 struct ieee80211_mgmt *mgmt;
1075 wpa_printf(MSG_DEBUG, "MLME: Send ADDTS Request for Voice TSPEC");
1077 alen = mgmt->u.action.u.wmm_action.variable - (u8 *) mgmt;
1079 buf = wpabuf_alloc(alen + sizeof(struct wmm_tspec_element));
1083 mgmt = wpabuf_put(buf, alen);
1084 os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
1085 os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
1086 os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
1087 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1088 WLAN_FC_STYPE_ACTION);
1089 mgmt->u.action.category = WLAN_ACTION_WMM;
1090 mgmt->u.action.u.wmm_action.action_code = WMM_ACTION_CODE_ADDTS_REQ;
1091 mgmt->u.action.u.wmm_action.dialog_token = 1;
1092 mgmt->u.action.u.wmm_action.status_code = 0;
1094 ieee80211_build_tspec(buf);
1096 ieee80211_sta_tx(wpa_s, wpabuf_head(buf), wpabuf_len(buf));
1101 static void ieee80211_rx_mgmt_assoc_resp(struct wpa_supplicant *wpa_s,
1102 struct ieee80211_mgmt *mgmt,
1104 struct ieee80211_rx_status *rx_status,
1109 u16 capab_info, status_code, aid;
1110 struct ieee802_11_elems elems;
1113 /* AssocResp and ReassocResp have identical structure, so process both
1114 * of them in this function. */
1116 if (wpa_s->mlme.state != IEEE80211_ASSOCIATE) {
1117 wpa_printf(MSG_DEBUG, "MLME: association frame received from "
1118 MACSTR ", but not in associate state - ignored",
1124 wpa_printf(MSG_DEBUG, "MLME: too short (%lu) association "
1125 "frame received from " MACSTR " - ignored",
1126 (unsigned long) len, MAC2STR(mgmt->sa));
1130 if (os_memcmp(wpa_s->bssid, mgmt->sa, ETH_ALEN) != 0) {
1131 wpa_printf(MSG_DEBUG, "MLME: association frame received from "
1132 "unknown AP (SA=" MACSTR " BSSID=" MACSTR ") - "
1133 "ignored", MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid));
1137 capab_info = le_to_host16(mgmt->u.assoc_resp.capab_info);
1138 status_code = le_to_host16(mgmt->u.assoc_resp.status_code);
1139 aid = le_to_host16(mgmt->u.assoc_resp.aid);
1140 if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
1141 wpa_printf(MSG_DEBUG, "MLME: invalid aid value %d; bits 15:14 "
1143 aid &= ~(BIT(15) | BIT(14));
1145 wpa_printf(MSG_DEBUG, "MLME: RX %sssocResp from " MACSTR
1146 " (capab=0x%x status=%d aid=%d)",
1147 reassoc ? "Rea" : "A", MAC2STR(mgmt->sa),
1148 capab_info, status_code, aid);
1150 pos = mgmt->u.assoc_resp.variable;
1151 if (ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems, 0)
1153 wpa_printf(MSG_DEBUG, "MLME: failed to parse AssocResp");
1157 if (status_code != WLAN_STATUS_SUCCESS) {
1158 wpa_printf(MSG_DEBUG, "MLME: AP denied association (code=%d)",
1160 #ifdef CONFIG_IEEE80211W
1161 if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY &&
1162 elems.timeout_int && elems.timeout_int_len == 5 &&
1163 elems.timeout_int[0] == WLAN_TIMEOUT_ASSOC_COMEBACK) {
1165 tu = WPA_GET_LE32(elems.timeout_int + 1);
1166 ms = tu * 1024 / 1000;
1167 wpa_printf(MSG_DEBUG, "MLME: AP rejected association "
1168 "temporarily; comeback duration %u TU "
1170 if (ms > IEEE80211_ASSOC_TIMEOUT) {
1171 wpa_printf(MSG_DEBUG, "MLME: Update timer "
1172 "based on comeback duration");
1173 ieee80211_reschedule_timer(wpa_s, ms);
1176 #endif /* CONFIG_IEEE80211W */
1180 if (elems.supp_rates == NULL) {
1181 wpa_printf(MSG_DEBUG, "MLME: no SuppRates element in "
1186 if (wpa_s->mlme.auth_alg == WLAN_AUTH_FT) {
1188 wpa_printf(MSG_DEBUG, "MLME: AP tried to use "
1189 "association, not reassociation, response "
1193 if (wpa_ft_validate_reassoc_resp(
1194 wpa_s->wpa, pos, len - (pos - (u8 *) mgmt),
1196 wpa_printf(MSG_DEBUG, "MLME: FT validation of Reassoc"
1200 } else if (ieee80211_ft_assoc_resp(wpa_s, &elems) < 0)
1203 wpa_printf(MSG_DEBUG, "MLME: associated");
1204 wpa_s->mlme.aid = aid;
1205 wpa_s->mlme.ap_capab = capab_info;
1207 os_free(wpa_s->mlme.assocresp_ies);
1208 wpa_s->mlme.assocresp_ies_len = len - (pos - (u8 *) mgmt);
1209 wpa_s->mlme.assocresp_ies = os_malloc(wpa_s->mlme.assocresp_ies_len);
1210 if (wpa_s->mlme.assocresp_ies) {
1211 os_memcpy(wpa_s->mlme.assocresp_ies, pos,
1212 wpa_s->mlme.assocresp_ies_len);
1215 ieee80211_set_associated(wpa_s, 1);
1217 rates_len = elems.supp_rates_len;
1218 if (rates_len > sizeof(rates))
1219 rates_len = sizeof(rates);
1220 os_memcpy(rates, elems.supp_rates, rates_len);
1221 if (elems.ext_supp_rates) {
1222 size_t _len = elems.ext_supp_rates_len;
1223 if (_len > sizeof(rates) - rates_len)
1224 _len = sizeof(rates) - rates_len;
1225 os_memcpy(rates + rates_len, elems.ext_supp_rates, _len);
1229 if (wpa_drv_set_bssid(wpa_s, wpa_s->bssid) < 0) {
1230 wpa_printf(MSG_DEBUG, "MLME: failed to set BSSID for the "
1233 if (wpa_drv_set_ssid(wpa_s, wpa_s->mlme.ssid, wpa_s->mlme.ssid_len) <
1235 wpa_printf(MSG_DEBUG, "MLME: failed to set SSID for the "
1239 /* Remove STA entry before adding a new one just in case to avoid
1240 * problems with existing configuration (e.g., keys). */
1241 wpa_drv_mlme_remove_sta(wpa_s, wpa_s->bssid);
1242 if (wpa_drv_mlme_add_sta(wpa_s, wpa_s->bssid, rates, rates_len) < 0) {
1243 wpa_printf(MSG_DEBUG, "MLME: failed to add STA entry to the "
1247 if (elems.wmm && wpa_s->mlme.wmm_enabled)
1248 ieee80211_sta_wmm_params(wpa_s, elems.wmm, elems.wmm_len);
1250 ieee80211_associated(wpa_s);
1252 if (wpa_s->mlme.auth_alg != WLAN_AUTH_FT &&
1253 os_strcmp(wpa_s->driver->name, "test") == 0 &&
1254 elems.wmm && wpa_s->mlme.wmm_enabled) {
1255 /* Test WMM-AC - send ADDTS for WMM TSPEC */
1256 ieee80211_tx_addts(wpa_s);
1261 /* Caller must hold local->sta_bss_lock */
1262 static void __ieee80211_bss_hash_add(struct wpa_supplicant *wpa_s,
1263 struct ieee80211_sta_bss *bss)
1265 bss->hnext = wpa_s->mlme.sta_bss_hash[STA_HASH(bss->bssid)];
1266 wpa_s->mlme.sta_bss_hash[STA_HASH(bss->bssid)] = bss;
1270 /* Caller must hold local->sta_bss_lock */
1271 static void __ieee80211_bss_hash_del(struct wpa_supplicant *wpa_s,
1272 struct ieee80211_sta_bss *bss)
1274 struct ieee80211_sta_bss *b, *prev = NULL;
1275 b = wpa_s->mlme.sta_bss_hash[STA_HASH(bss->bssid)];
1279 wpa_s->mlme.sta_bss_hash[STA_HASH(bss->bssid)]
1282 prev->hnext = bss->hnext;
1292 static struct ieee80211_sta_bss *
1293 ieee80211_bss_add(struct wpa_supplicant *wpa_s, const u8 *bssid)
1295 struct ieee80211_sta_bss *bss;
1297 bss = os_zalloc(sizeof(*bss));
1300 os_memcpy(bss->bssid, bssid, ETH_ALEN);
1302 /* TODO: order by RSSI? */
1303 bss->next = wpa_s->mlme.sta_bss_list;
1304 wpa_s->mlme.sta_bss_list = bss;
1305 __ieee80211_bss_hash_add(wpa_s, bss);
1310 static struct ieee80211_sta_bss *
1311 ieee80211_bss_get(struct wpa_supplicant *wpa_s, const u8 *bssid)
1313 struct ieee80211_sta_bss *bss;
1315 bss = wpa_s->mlme.sta_bss_hash[STA_HASH(bssid)];
1317 if (os_memcmp(bss->bssid, bssid, ETH_ALEN) == 0)
1325 static void ieee80211_bss_free(struct wpa_supplicant *wpa_s,
1326 struct ieee80211_sta_bss *bss)
1328 __ieee80211_bss_hash_del(wpa_s, bss);
1330 os_free(bss->wpa_ie);
1331 os_free(bss->rsn_ie);
1332 os_free(bss->wmm_ie);
1338 static void ieee80211_bss_list_deinit(struct wpa_supplicant *wpa_s)
1340 struct ieee80211_sta_bss *bss, *prev;
1342 bss = wpa_s->mlme.sta_bss_list;
1343 wpa_s->mlme.sta_bss_list = NULL;
1347 ieee80211_bss_free(wpa_s, prev);
1352 static void ieee80211_bss_info(struct wpa_supplicant *wpa_s,
1353 struct ieee80211_mgmt *mgmt,
1355 struct ieee80211_rx_status *rx_status,
1358 struct ieee802_11_elems elems;
1360 int channel, invalid = 0, clen;
1361 struct ieee80211_sta_bss *bss;
1366 if (!beacon && os_memcmp(mgmt->da, wpa_s->own_addr, ETH_ALEN))
1367 return; /* ignore ProbeResp to foreign address */
1370 wpa_printf(MSG_MSGDUMP, "MLME: RX %s from " MACSTR " to " MACSTR,
1371 beacon ? "Beacon" : "Probe Response",
1372 MAC2STR(mgmt->sa), MAC2STR(mgmt->da));
1375 baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
1379 pos = mgmt->u.beacon.timestamp;
1380 timestamp = WPA_GET_LE64(pos);
1383 if (local->conf.mode == IW_MODE_ADHOC && beacon &&
1384 os_memcmp(mgmt->bssid, local->bssid, ETH_ALEN) == 0) {
1385 #ifdef IEEE80211_IBSS_DEBUG
1386 static unsigned long last_tsf_debug = 0;
1388 if (local->hw->get_tsf)
1389 tsf = local->hw->get_tsf(local->mdev);
1392 if (time_after(jiffies, last_tsf_debug + 5 * HZ)) {
1393 wpa_printf(MSG_DEBUG, "RX beacon SA=" MACSTR " BSSID="
1394 MACSTR " TSF=0x%llx BCN=0x%llx diff=%lld "
1396 MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid),
1397 tsf, timestamp, tsf - timestamp, jiffies);
1398 last_tsf_debug = jiffies;
1400 #endif /* IEEE80211_IBSS_DEBUG */
1404 ie_pos = mgmt->u.beacon.variable;
1405 ie_len = len - baselen;
1406 if (ieee802_11_parse_elems(ie_pos, ie_len, &elems, 0) == ParseFailed)
1410 if (local->conf.mode == IW_MODE_ADHOC && elems.supp_rates &&
1411 os_memcmp(mgmt->bssid, local->bssid, ETH_ALEN) == 0 &&
1412 (sta = sta_info_get(local, mgmt->sa))) {
1413 struct ieee80211_rate *rates;
1415 u32 supp_rates, prev_rates;
1416 int i, j, oper_mode;
1418 rates = local->curr_rates;
1419 num_rates = local->num_curr_rates;
1420 oper_mode = wpa_s->mlme.sta_scanning ?
1421 local->scan_oper_phymode : local->conf.phymode;
1422 for (i = 0; i < local->hw->num_modes; i++) {
1423 struct ieee80211_hw_modes *mode = &local->hw->modes[i];
1424 if (oper_mode == mode->mode) {
1425 rates = mode->rates;
1426 num_rates = mode->num_rates;
1432 for (i = 0; i < elems.supp_rates_len +
1433 elems.ext_supp_rates_len; i++) {
1436 if (i < elems.supp_rates_len)
1437 rate = elems.supp_rates[i];
1438 else if (elems.ext_supp_rates)
1439 rate = elems.ext_supp_rates
1440 [i - elems.supp_rates_len];
1441 own_rate = 5 * (rate & 0x7f);
1442 if (oper_mode == MODE_ATHEROS_TURBO)
1444 for (j = 0; j < num_rates; j++)
1445 if (rates[j].rate == own_rate)
1446 supp_rates |= BIT(j);
1449 prev_rates = sta->supp_rates;
1450 sta->supp_rates &= supp_rates;
1451 if (sta->supp_rates == 0) {
1452 /* No matching rates - this should not really happen.
1453 * Make sure that at least one rate is marked
1454 * supported to avoid issues with TX rate ctrl. */
1455 sta->supp_rates = wpa_s->mlme.supp_rates_bits;
1457 if (sta->supp_rates != prev_rates) {
1458 wpa_printf(MSG_DEBUG, "MLME: updated supp_rates set "
1459 "for " MACSTR " based on beacon info "
1460 "(0x%x & 0x%x -> 0x%x)",
1461 MAC2STR(sta->addr), prev_rates,
1462 supp_rates, sta->supp_rates);
1464 sta_info_release(local, sta);
1468 if (elems.ssid == NULL)
1471 if (elems.ds_params && elems.ds_params_len == 1)
1472 channel = elems.ds_params[0];
1474 channel = rx_status->channel;
1476 bss = ieee80211_bss_get(wpa_s, mgmt->bssid);
1478 bss = ieee80211_bss_add(wpa_s, mgmt->bssid);
1483 /* TODO: order by RSSI? */
1484 spin_lock_bh(&local->sta_bss_lock);
1485 list_move_tail(&bss->list, &local->sta_bss_list);
1486 spin_unlock_bh(&local->sta_bss_lock);
1490 if (bss->probe_resp && beacon) {
1491 /* Do not allow beacon to override data from Probe Response. */
1495 bss->beacon_int = le_to_host16(mgmt->u.beacon.beacon_int);
1496 bss->capability = le_to_host16(mgmt->u.beacon.capab_info);
1498 if (bss->ie == NULL || bss->ie_len < ie_len) {
1500 bss->ie = os_malloc(ie_len);
1503 os_memcpy(bss->ie, ie_pos, ie_len);
1504 bss->ie_len = ie_len;
1507 if (elems.ssid && elems.ssid_len <= MAX_SSID_LEN) {
1508 os_memcpy(bss->ssid, elems.ssid, elems.ssid_len);
1509 bss->ssid_len = elems.ssid_len;
1512 bss->supp_rates_len = 0;
1513 if (elems.supp_rates) {
1514 clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
1515 if (clen > elems.supp_rates_len)
1516 clen = elems.supp_rates_len;
1517 os_memcpy(&bss->supp_rates[bss->supp_rates_len],
1518 elems.supp_rates, clen);
1519 bss->supp_rates_len += clen;
1521 if (elems.ext_supp_rates) {
1522 clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
1523 if (clen > elems.ext_supp_rates_len)
1524 clen = elems.ext_supp_rates_len;
1525 os_memcpy(&bss->supp_rates[bss->supp_rates_len],
1526 elems.ext_supp_rates, clen);
1527 bss->supp_rates_len += clen;
1531 (bss->wpa_ie == NULL || bss->wpa_ie_len != elems.wpa_ie_len ||
1532 os_memcmp(bss->wpa_ie, elems.wpa_ie, elems.wpa_ie_len))) {
1533 os_free(bss->wpa_ie);
1534 bss->wpa_ie = os_malloc(elems.wpa_ie_len + 2);
1536 os_memcpy(bss->wpa_ie, elems.wpa_ie - 2,
1537 elems.wpa_ie_len + 2);
1538 bss->wpa_ie_len = elems.wpa_ie_len + 2;
1540 bss->wpa_ie_len = 0;
1541 } else if (!elems.wpa_ie && bss->wpa_ie) {
1542 os_free(bss->wpa_ie);
1544 bss->wpa_ie_len = 0;
1548 (bss->rsn_ie == NULL || bss->rsn_ie_len != elems.rsn_ie_len ||
1549 os_memcmp(bss->rsn_ie, elems.rsn_ie, elems.rsn_ie_len))) {
1550 os_free(bss->rsn_ie);
1551 bss->rsn_ie = os_malloc(elems.rsn_ie_len + 2);
1553 os_memcpy(bss->rsn_ie, elems.rsn_ie - 2,
1554 elems.rsn_ie_len + 2);
1555 bss->rsn_ie_len = elems.rsn_ie_len + 2;
1557 bss->rsn_ie_len = 0;
1558 } else if (!elems.rsn_ie && bss->rsn_ie) {
1559 os_free(bss->rsn_ie);
1561 bss->rsn_ie_len = 0;
1565 (bss->wmm_ie == NULL || bss->wmm_ie_len != elems.wmm_len ||
1566 os_memcmp(bss->wmm_ie, elems.wmm, elems.wmm_len))) {
1567 os_free(bss->wmm_ie);
1568 bss->wmm_ie = os_malloc(elems.wmm_len + 2);
1570 os_memcpy(bss->wmm_ie, elems.wmm - 2,
1572 bss->wmm_ie_len = elems.wmm_len + 2;
1574 bss->wmm_ie_len = 0;
1575 } else if (!elems.wmm && bss->wmm_ie) {
1576 os_free(bss->wmm_ie);
1578 bss->wmm_ie_len = 0;
1581 #ifdef CONFIG_IEEE80211R
1583 (bss->mdie == NULL || bss->mdie_len != elems.mdie_len ||
1584 os_memcmp(bss->mdie, elems.mdie, elems.mdie_len))) {
1586 bss->mdie = os_malloc(elems.mdie_len + 2);
1588 os_memcpy(bss->mdie, elems.mdie - 2,
1589 elems.mdie_len + 2);
1590 bss->mdie_len = elems.mdie_len + 2;
1593 } else if (!elems.mdie && bss->mdie) {
1598 #endif /* CONFIG_IEEE80211R */
1600 bss->hw_mode = wpa_s->mlme.phymode;
1601 bss->channel = channel;
1602 bss->freq = wpa_s->mlme.freq;
1603 if (channel != wpa_s->mlme.channel &&
1604 (wpa_s->mlme.phymode == HOSTAPD_MODE_IEEE80211G ||
1605 wpa_s->mlme.phymode == HOSTAPD_MODE_IEEE80211B) &&
1606 channel >= 1 && channel <= 14) {
1607 static const int freq_list[] = {
1608 2412, 2417, 2422, 2427, 2432, 2437, 2442,
1609 2447, 2452, 2457, 2462, 2467, 2472, 2484
1611 /* IEEE 802.11g/b mode can receive packets from neighboring
1612 * channels, so map the channel into frequency. */
1613 bss->freq = freq_list[channel - 1];
1615 bss->timestamp = timestamp;
1616 os_get_time(&bss->last_update);
1617 bss->rssi = rx_status->ssi;
1623 static void ieee80211_rx_mgmt_probe_resp(struct wpa_supplicant *wpa_s,
1624 struct ieee80211_mgmt *mgmt,
1626 struct ieee80211_rx_status *rx_status)
1628 ieee80211_bss_info(wpa_s, mgmt, len, rx_status, 0);
1632 static void ieee80211_rx_mgmt_beacon(struct wpa_supplicant *wpa_s,
1633 struct ieee80211_mgmt *mgmt,
1635 struct ieee80211_rx_status *rx_status)
1639 struct ieee802_11_elems elems;
1641 ieee80211_bss_info(wpa_s, mgmt, len, rx_status, 1);
1643 if (!wpa_s->mlme.associated ||
1644 os_memcmp(wpa_s->bssid, mgmt->bssid, ETH_ALEN) != 0)
1647 /* Process beacon from the current BSS */
1648 baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
1652 if (ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen,
1653 &elems, 0) == ParseFailed)
1657 if (elems.erp_info && elems.erp_info_len >= 1) {
1659 (elems.erp_info[0] & ERP_INFO_USE_PROTECTION) != 0;
1662 if (use_protection != !!wpa_s->mlme.use_protection) {
1663 wpa_printf(MSG_DEBUG, "MLME: CTS protection %s (BSSID=" MACSTR
1665 use_protection ? "enabled" : "disabled",
1666 MAC2STR(wpa_s->bssid));
1667 wpa_s->mlme.use_protection = use_protection ? 1 : 0;
1668 wpa_s->mlme.cts_protect_erp_frames = use_protection;
1671 if (elems.wmm && wpa_s->mlme.wmm_enabled) {
1672 ieee80211_sta_wmm_params(wpa_s, elems.wmm,
1678 static void ieee80211_rx_mgmt_probe_req(struct wpa_supplicant *wpa_s,
1679 struct ieee80211_mgmt *mgmt,
1681 struct ieee80211_rx_status *rx_status)
1683 int tx_last_beacon, adhoc;
1685 struct ieee80211_mgmt *resp;
1688 struct wpa_ssid *ssid = wpa_s->current_ssid;
1690 adhoc = ssid && ssid->mode == 1;
1692 if (!adhoc || wpa_s->mlme.state != IEEE80211_IBSS_JOINED ||
1693 len < 24 + 2 || wpa_s->mlme.probe_resp == NULL)
1697 if (local->hw->tx_last_beacon)
1698 tx_last_beacon = local->hw->tx_last_beacon(local->mdev);
1703 #ifdef IEEE80211_IBSS_DEBUG
1704 wpa_printf(MSG_DEBUG, "MLME: RX ProbeReq SA=" MACSTR " DA=" MACSTR
1705 " BSSID=" MACSTR " (tx_last_beacon=%d)",
1706 MAC2STR(mgmt->sa), MAC2STR(mgmt->da),
1707 MAC2STR(mgmt->bssid), tx_last_beacon);
1708 #endif /* IEEE80211_IBSS_DEBUG */
1710 if (!tx_last_beacon)
1713 if (os_memcmp(mgmt->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
1714 os_memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
1717 end = ((u8 *) mgmt) + len;
1718 pos = mgmt->u.probe_req.variable;
1719 if (pos[0] != WLAN_EID_SSID ||
1720 pos + 2 + pos[1] > end) {
1721 wpa_printf(MSG_DEBUG, "MLME: Invalid SSID IE in ProbeReq from "
1722 MACSTR, MAC2STR(mgmt->sa));
1726 (pos[1] != wpa_s->mlme.ssid_len ||
1727 os_memcmp(pos + 2, wpa_s->mlme.ssid, wpa_s->mlme.ssid_len) != 0))
1729 /* Ignore ProbeReq for foreign SSID */
1734 /* Reply with ProbeResp */
1735 skb = skb_copy(wpa_s->mlme.probe_resp, GFP_ATOMIC);
1739 resp = (struct ieee80211_mgmt *) skb->data;
1740 os_memcpy(resp->da, mgmt->sa, ETH_ALEN);
1741 #ifdef IEEE80211_IBSS_DEBUG
1742 wpa_printf(MSG_DEBUG, "MLME: Sending ProbeResp to " MACSTR,
1744 #endif /* IEEE80211_IBSS_DEBUG */
1745 ieee80211_sta_tx(wpa_s, skb, 0, 1);
1750 #ifdef CONFIG_IEEE80211R
1751 static void ieee80211_rx_mgmt_ft_action(struct wpa_supplicant *wpa_s,
1752 struct ieee80211_mgmt *mgmt,
1754 struct ieee80211_rx_status *rx_status)
1756 union wpa_event_data data;
1758 u8 *sta_addr, *target_ap_addr;
1760 if (len < 24 + 1 + sizeof(mgmt->u.action.u.ft_action_resp)) {
1761 wpa_printf(MSG_DEBUG, "MLME: Too short FT Action frame");
1766 * Only FT Action Response is needed for now since reservation
1767 * protocol is not supported.
1769 if (mgmt->u.action.u.ft_action_resp.action != 2) {
1770 wpa_printf(MSG_DEBUG, "MLME: Unexpected FT Action %d",
1771 mgmt->u.action.u.ft_action_resp.action);
1775 status = le_to_host16(mgmt->u.action.u.ft_action_resp.status_code);
1776 sta_addr = mgmt->u.action.u.ft_action_resp.sta_addr;
1777 target_ap_addr = mgmt->u.action.u.ft_action_resp.target_ap_addr;
1778 wpa_printf(MSG_DEBUG, "MLME: Received FT Action Response: STA " MACSTR
1779 " TargetAP " MACSTR " Status Code %d",
1780 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
1781 if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
1782 wpa_printf(MSG_DEBUG, "MLME: Foreign STA Address " MACSTR
1783 " in FT Action Response", MAC2STR(sta_addr));
1788 wpa_printf(MSG_DEBUG, "MLME: FT Action Response indicates "
1789 "failure (status code %d)", status);
1790 /* TODO: report error to FT code(?) */
1794 os_memset(&data, 0, sizeof(data));
1795 data.ft_ies.ies = mgmt->u.action.u.ft_action_resp.variable;
1796 data.ft_ies.ies_len = len - (mgmt->u.action.u.ft_action_resp.variable -
1798 data.ft_ies.ft_action = 1;
1799 os_memcpy(data.ft_ies.target_ap, target_ap_addr, ETH_ALEN);
1800 wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &data);
1801 /* TODO: should only re-associate, if EVENT_FT_RESPONSE was processed
1803 wpa_s->mlme.prev_bssid_set = 1;
1804 wpa_s->mlme.auth_alg = WLAN_AUTH_FT;
1805 os_memcpy(wpa_s->mlme.prev_bssid, wpa_s->bssid, ETH_ALEN);
1806 os_memcpy(wpa_s->bssid, target_ap_addr, ETH_ALEN);
1807 ieee80211_associate(wpa_s);
1809 #endif /* CONFIG_IEEE80211R */
1812 #ifdef CONFIG_IEEE80211W
1814 /* MLME-SAQuery.response */
1815 static int ieee80211_sta_send_sa_query_resp(struct wpa_supplicant *wpa_s,
1816 const u8 *addr, const u8 *trans_id)
1818 struct ieee80211_mgmt *mgmt;
1822 mgmt = os_zalloc(sizeof(*mgmt));
1824 wpa_printf(MSG_DEBUG, "MLME: Failed to allocate buffer for "
1825 "SA Query action frame");
1830 os_memcpy(mgmt->da, addr, ETH_ALEN);
1831 os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
1832 os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
1833 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1834 WLAN_FC_STYPE_ACTION);
1835 mgmt->u.action.category = WLAN_ACTION_SA_QUERY;
1836 mgmt->u.action.u.sa_query_resp.action = WLAN_SA_QUERY_RESPONSE;
1837 os_memcpy(mgmt->u.action.u.sa_query_resp.trans_id, trans_id,
1838 WLAN_SA_QUERY_TR_ID_LEN);
1839 len += 1 + sizeof(mgmt->u.action.u.sa_query_resp);
1841 res = ieee80211_sta_tx(wpa_s, (u8 *) mgmt, len);
1848 static void ieee80211_rx_mgmt_sa_query_action(
1849 struct wpa_supplicant *wpa_s, struct ieee80211_mgmt *mgmt, size_t len,
1850 struct ieee80211_rx_status *rx_status)
1852 if (len < 24 + 1 + sizeof(mgmt->u.action.u.sa_query_req)) {
1853 wpa_printf(MSG_DEBUG, "MLME: Too short SA Query Action frame");
1857 if (mgmt->u.action.u.sa_query_req.action != WLAN_SA_QUERY_REQUEST) {
1858 wpa_printf(MSG_DEBUG, "MLME: Unexpected SA Query Action %d",
1859 mgmt->u.action.u.sa_query_req.action);
1863 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) != 0) {
1864 wpa_printf(MSG_DEBUG, "MLME: Ignore SA Query from unknown "
1865 "source " MACSTR, MAC2STR(mgmt->sa));
1869 if (wpa_s->mlme.state == IEEE80211_ASSOCIATE) {
1870 wpa_printf(MSG_DEBUG, "MLME: Ignore SA query request during "
1871 "association process");
1875 wpa_printf(MSG_DEBUG, "MLME: Replying to SA Query request");
1876 ieee80211_sta_send_sa_query_resp(wpa_s, mgmt->sa, mgmt->u.action.u.
1877 sa_query_req.trans_id);
1880 #endif /* CONFIG_IEEE80211W */
1883 static void dump_tspec(struct wmm_tspec_element *tspec)
1885 int up, psb, dir, tid;
1888 up = (tspec->ts_info[1] >> 3) & 0x07;
1889 psb = (tspec->ts_info[1] >> 2) & 0x01;
1890 dir = (tspec->ts_info[0] >> 5) & 0x03;
1891 tid = (tspec->ts_info[0] >> 1) & 0x0f;
1892 wpa_printf(MSG_DEBUG, "WMM: TS Info: UP=%d PSB=%d Direction=%d TID=%d",
1894 val = le_to_host16(tspec->nominal_msdu_size);
1895 wpa_printf(MSG_DEBUG, "WMM: Nominal MSDU Size: %d%s",
1896 val & 0x7fff, val & 0x8000 ? " (fixed)" : "");
1897 wpa_printf(MSG_DEBUG, "WMM: Mean Data Rate: %u bps",
1898 le_to_host32(tspec->mean_data_rate));
1899 wpa_printf(MSG_DEBUG, "WMM: Minimum PHY Rate: %u bps",
1900 le_to_host32(tspec->minimum_phy_rate));
1901 val = le_to_host16(tspec->surplus_bandwidth_allowance);
1902 wpa_printf(MSG_DEBUG, "WMM: Surplus Bandwidth Allowance: %u.%04u",
1903 val >> 13, 10000 * (val & 0x1fff) / 0x2000);
1904 val = le_to_host16(tspec->medium_time);
1905 wpa_printf(MSG_DEBUG, "WMM: Medium Time: %u (= %u usec/sec)",
1910 static int is_wmm_tspec(const u8 *ie, size_t len)
1912 const struct wmm_tspec_element *tspec;
1914 if (len < sizeof(*tspec))
1917 tspec = (const struct wmm_tspec_element *) ie;
1918 if (tspec->eid != WLAN_EID_VENDOR_SPECIFIC ||
1919 tspec->length < sizeof(*tspec) - 2 ||
1920 tspec->oui[0] != 0x00 || tspec->oui[1] != 0x50 ||
1921 tspec->oui[2] != 0xf2 || tspec->oui_type != 2 ||
1922 tspec->oui_subtype != 2 || tspec->version != 1)
1929 static void ieee80211_rx_addts_resp(
1930 struct wpa_supplicant *wpa_s, struct ieee80211_mgmt *mgmt, size_t len,
1933 struct wmm_tspec_element *tspec;
1935 wpa_printf(MSG_DEBUG, "WMM: Received ADDTS Response");
1936 wpa_hexdump(MSG_MSGDUMP, "WMM: ADDTS Response IE(s)",
1937 mgmt->u.action.u.wmm_action.variable, var_len);
1938 if (!is_wmm_tspec(mgmt->u.action.u.wmm_action.variable, var_len))
1940 tspec = (struct wmm_tspec_element *)
1941 mgmt->u.action.u.wmm_action.variable;
1946 static void ieee80211_rx_delts(
1947 struct wpa_supplicant *wpa_s, struct ieee80211_mgmt *mgmt, size_t len,
1950 struct wmm_tspec_element *tspec;
1952 wpa_printf(MSG_DEBUG, "WMM: Received DELTS");
1953 wpa_hexdump(MSG_MSGDUMP, "WMM: DELTS IE(s)",
1954 mgmt->u.action.u.wmm_action.variable, var_len);
1955 if (!is_wmm_tspec(mgmt->u.action.u.wmm_action.variable, var_len))
1957 tspec = (struct wmm_tspec_element *)
1958 mgmt->u.action.u.wmm_action.variable;
1963 static void ieee80211_rx_mgmt_wmm_action(
1964 struct wpa_supplicant *wpa_s, struct ieee80211_mgmt *mgmt, size_t len,
1965 struct ieee80211_rx_status *rx_status)
1969 alen = mgmt->u.action.u.wmm_action.variable - (u8 *) mgmt;
1971 wpa_printf(MSG_DEBUG, "WMM: Received Action frame too short");
1975 wpa_printf(MSG_DEBUG, "WMM: Received Action frame: Action Code %d, "
1976 "Dialog Token %d, Status Code %d",
1977 mgmt->u.action.u.wmm_action.action_code,
1978 mgmt->u.action.u.wmm_action.dialog_token,
1979 mgmt->u.action.u.wmm_action.status_code);
1981 switch (mgmt->u.action.u.wmm_action.action_code) {
1982 case WMM_ACTION_CODE_ADDTS_RESP:
1983 ieee80211_rx_addts_resp(wpa_s, mgmt, len, len - alen);
1985 case WMM_ACTION_CODE_DELTS:
1986 ieee80211_rx_delts(wpa_s, mgmt, len, len - alen);
1989 wpa_printf(MSG_DEBUG, "WMM: Unsupported Action Code %d",
1990 mgmt->u.action.u.wmm_action.action_code);
1996 static void ieee80211_rx_mgmt_action(struct wpa_supplicant *wpa_s,
1997 struct ieee80211_mgmt *mgmt,
1999 struct ieee80211_rx_status *rx_status)
2001 wpa_printf(MSG_DEBUG, "MLME: received Action frame");
2006 switch (mgmt->u.action.category) {
2007 #ifdef CONFIG_IEEE80211R
2008 case WLAN_ACTION_FT:
2009 ieee80211_rx_mgmt_ft_action(wpa_s, mgmt, len, rx_status);
2011 #endif /* CONFIG_IEEE80211R */
2012 #ifdef CONFIG_IEEE80211W
2013 case WLAN_ACTION_SA_QUERY:
2014 ieee80211_rx_mgmt_sa_query_action(wpa_s, mgmt, len, rx_status);
2016 #endif /* CONFIG_IEEE80211W */
2017 case WLAN_ACTION_WMM:
2018 ieee80211_rx_mgmt_wmm_action(wpa_s, mgmt, len, rx_status);
2021 wpa_printf(MSG_DEBUG, "MLME: unknown Action Category %d",
2022 mgmt->u.action.category);
2028 static void ieee80211_sta_rx_mgmt(struct wpa_supplicant *wpa_s,
2029 const u8 *buf, size_t len,
2030 struct ieee80211_rx_status *rx_status)
2032 struct ieee80211_mgmt *mgmt;
2038 mgmt = (struct ieee80211_mgmt *) buf;
2039 fc = le_to_host16(mgmt->frame_control);
2041 switch (WLAN_FC_GET_STYPE(fc)) {
2042 case WLAN_FC_STYPE_PROBE_REQ:
2043 ieee80211_rx_mgmt_probe_req(wpa_s, mgmt, len, rx_status);
2045 case WLAN_FC_STYPE_PROBE_RESP:
2046 ieee80211_rx_mgmt_probe_resp(wpa_s, mgmt, len, rx_status);
2048 case WLAN_FC_STYPE_BEACON:
2049 ieee80211_rx_mgmt_beacon(wpa_s, mgmt, len, rx_status);
2051 case WLAN_FC_STYPE_AUTH:
2052 ieee80211_rx_mgmt_auth(wpa_s, mgmt, len, rx_status);
2054 case WLAN_FC_STYPE_ASSOC_RESP:
2055 ieee80211_rx_mgmt_assoc_resp(wpa_s, mgmt, len, rx_status, 0);
2057 case WLAN_FC_STYPE_REASSOC_RESP:
2058 ieee80211_rx_mgmt_assoc_resp(wpa_s, mgmt, len, rx_status, 1);
2060 case WLAN_FC_STYPE_DEAUTH:
2061 ieee80211_rx_mgmt_deauth(wpa_s, mgmt, len, rx_status);
2063 case WLAN_FC_STYPE_DISASSOC:
2064 ieee80211_rx_mgmt_disassoc(wpa_s, mgmt, len, rx_status);
2066 case WLAN_FC_STYPE_ACTION:
2067 ieee80211_rx_mgmt_action(wpa_s, mgmt, len, rx_status);
2070 wpa_printf(MSG_DEBUG, "MLME: received unknown management "
2071 "frame - stype=%d", WLAN_FC_GET_STYPE(fc));
2077 static void ieee80211_sta_rx_scan(struct wpa_supplicant *wpa_s,
2078 const u8 *buf, size_t len,
2079 struct ieee80211_rx_status *rx_status)
2081 struct ieee80211_mgmt *mgmt;
2087 mgmt = (struct ieee80211_mgmt *) buf;
2088 fc = le_to_host16(mgmt->frame_control);
2090 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT) {
2091 if (WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
2092 ieee80211_rx_mgmt_probe_resp(wpa_s, mgmt,
2094 } else if (WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON) {
2095 ieee80211_rx_mgmt_beacon(wpa_s, mgmt, len, rx_status);
2101 static int ieee80211_sta_active_ibss(struct wpa_supplicant *wpa_s)
2106 list_for_each(ptr, &local->sta_list) {
2107 sta = list_entry(ptr, struct sta_info, list);
2108 if (sta->dev == dev &&
2109 time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL,
2121 static void ieee80211_sta_expire(struct wpa_supplicant *wpa_s)
2124 list_for_each_safe(ptr, n, &local->sta_list) {
2125 sta = list_entry(ptr, struct sta_info, list);
2126 if (time_after(jiffies, sta->last_rx +
2127 IEEE80211_IBSS_INACTIVITY_LIMIT)) {
2128 wpa_printf(MSG_DEBUG, "MLME: expiring inactive STA "
2129 MACSTR, MAC2STR(sta->addr));
2130 sta_info_free(local, sta, 1);
2137 static void ieee80211_sta_merge_ibss(struct wpa_supplicant *wpa_s)
2139 ieee80211_reschedule_timer(wpa_s, IEEE80211_IBSS_MERGE_INTERVAL);
2141 ieee80211_sta_expire(wpa_s);
2142 if (ieee80211_sta_active_ibss(wpa_s))
2145 wpa_printf(MSG_DEBUG, "MLME: No active IBSS STAs - trying to scan for "
2146 "other IBSS networks with same SSID (merge)");
2147 ieee80211_sta_req_scan(wpa_s, wpa_s->mlme.ssid, wpa_s->mlme.ssid_len);
2151 static void ieee80211_sta_timer(void *eloop_ctx, void *timeout_ctx)
2153 struct wpa_supplicant *wpa_s = eloop_ctx;
2155 switch (wpa_s->mlme.state) {
2156 case IEEE80211_DISABLED:
2158 case IEEE80211_AUTHENTICATE:
2159 ieee80211_authenticate(wpa_s);
2161 case IEEE80211_ASSOCIATE:
2162 ieee80211_associate(wpa_s);
2164 case IEEE80211_ASSOCIATED:
2165 ieee80211_associated(wpa_s);
2167 case IEEE80211_IBSS_SEARCH:
2168 ieee80211_sta_find_ibss(wpa_s);
2170 case IEEE80211_IBSS_JOINED:
2171 ieee80211_sta_merge_ibss(wpa_s);
2174 wpa_printf(MSG_DEBUG, "ieee80211_sta_timer: Unknown state %d",
2179 if (ieee80211_privacy_mismatch(wpa_s)) {
2180 wpa_printf(MSG_DEBUG, "MLME: privacy configuration mismatch "
2181 "and mixed-cell disabled - disassociate");
2183 ieee80211_send_disassoc(wpa_s, WLAN_REASON_UNSPECIFIED);
2184 ieee80211_set_associated(wpa_s, 0);
2189 static void ieee80211_sta_new_auth(struct wpa_supplicant *wpa_s)
2191 struct wpa_ssid *ssid = wpa_s->current_ssid;
2192 if (ssid && ssid->mode != 0)
2196 if (local->hw->reset_tsf) {
2197 /* Reset own TSF to allow time synchronization work. */
2198 local->hw->reset_tsf(local->mdev);
2202 wpa_s->mlme.wmm_last_param_set = -1; /* allow any WMM update */
2205 if (wpa_s->mlme.auth_algs & IEEE80211_AUTH_ALG_OPEN)
2206 wpa_s->mlme.auth_alg = WLAN_AUTH_OPEN;
2207 else if (wpa_s->mlme.auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY)
2208 wpa_s->mlme.auth_alg = WLAN_AUTH_SHARED_KEY;
2209 else if (wpa_s->mlme.auth_algs & IEEE80211_AUTH_ALG_LEAP)
2210 wpa_s->mlme.auth_alg = WLAN_AUTH_LEAP;
2212 wpa_s->mlme.auth_alg = WLAN_AUTH_OPEN;
2213 wpa_printf(MSG_DEBUG, "MLME: Initial auth_alg=%d",
2214 wpa_s->mlme.auth_alg);
2215 wpa_s->mlme.auth_transaction = -1;
2216 wpa_s->mlme.auth_tries = wpa_s->mlme.assoc_tries = 0;
2217 ieee80211_authenticate(wpa_s);
2221 static int ieee80211_ibss_allowed(struct wpa_supplicant *wpa_s)
2226 for (m = 0; m < local->hw->num_modes; m++) {
2227 struct ieee80211_hw_modes *mode = &local->hw->modes[m];
2228 if (mode->mode != local->conf.phymode)
2230 for (c = 0; c < mode->num_channels; c++) {
2231 struct ieee80211_channel *chan = &mode->channels[c];
2232 if (chan->flag & IEEE80211_CHAN_W_SCAN &&
2233 chan->chan == local->conf.channel) {
2234 if (chan->flag & IEEE80211_CHAN_W_IBSS)
2246 static int ieee80211_sta_join_ibss(struct wpa_supplicant *wpa_s,
2247 struct ieee80211_sta_bss *bss)
2249 int res = 0, rates, done = 0, bssid_changed;
2250 struct ieee80211_mgmt *mgmt;
2252 struct ieee80211_tx_control control;
2253 struct ieee80211_rate *rate;
2254 struct rate_control_extra extra;
2259 /* Remove possible STA entries from other IBSS networks. */
2261 sta_info_flush(local, NULL);
2263 if (local->hw->reset_tsf) {
2264 /* Reset own TSF to allow time synchronization work. */
2265 local->hw->reset_tsf(local->mdev);
2268 bssid_changed = os_memcmp(wpa_s->bssid, bss->bssid, ETH_ALEN);
2269 os_memcpy(wpa_s->bssid, bss->bssid, ETH_ALEN);
2271 wpas_notify_bssid_changed(wpa_s);
2274 local->conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10;
2276 sdata->drop_unencrypted = bss->capability &
2277 host_to_le16(WLAN_CAPABILITY_PRIVACY) ? 1 : 0;
2281 os_memset(&rq, 0, sizeof(rq));
2282 rq.m = bss->freq * 100000;
2284 res = ieee80211_ioctl_siwfreq(wpa_s, NULL, &rq, NULL);
2287 if (!ieee80211_ibss_allowed(wpa_s)) {
2289 wpa_printf(MSG_DEBUG, "MLME: IBSS not allowed on channel %d "
2290 "(%d MHz)", local->conf.channel,
2296 /* Set beacon template based on scan results */
2297 buf = os_malloc(400);
2303 mgmt = (struct ieee80211_mgmt *) buf;
2304 len += 24 + sizeof(mgmt->u.beacon);
2305 os_memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon));
2306 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
2307 WLAN_FC_STYPE_BEACON);
2308 os_memset(mgmt->da, 0xff, ETH_ALEN);
2309 os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
2310 os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
2312 mgmt->u.beacon.beacon_int =
2313 host_to_le16(local->conf.beacon_int);
2315 mgmt->u.beacon.capab_info = host_to_le16(bss->capability);
2318 len += 2 + wpa_s->mlme.ssid_len;
2319 *pos++ = WLAN_EID_SSID;
2320 *pos++ = wpa_s->mlme.ssid_len;
2321 os_memcpy(pos, wpa_s->mlme.ssid, wpa_s->mlme.ssid_len);
2323 rates = bss->supp_rates_len;
2328 *pos++ = WLAN_EID_SUPP_RATES;
2330 os_memcpy(pos, bss->supp_rates, rates);
2334 *pos++ = WLAN_EID_DS_PARAMS;
2336 *pos++ = bss->channel;
2340 *pos++ = WLAN_EID_IBSS_PARAMS;
2342 /* FIX: set ATIM window based on scan results */
2346 if (bss->supp_rates_len > 8) {
2347 rates = bss->supp_rates_len - 8;
2350 *pos++ = WLAN_EID_EXT_SUPP_RATES;
2352 os_memcpy(pos, &bss->supp_rates[8], rates);
2356 os_memset(&control, 0, sizeof(control));
2357 control.pkt_type = PKT_PROBE_RESP;
2358 os_memset(&extra, 0, sizeof(extra));
2359 extra.endidx = local->num_curr_rates;
2360 rate = rate_control_get_rate(wpa_s, skb, &extra);
2362 wpa_printf(MSG_DEBUG, "MLME: Failed to determine TX "
2363 "rate for IBSS beacon");
2366 control.tx_rate = (wpa_s->mlme.short_preamble &&
2367 (rate->flags & IEEE80211_RATE_PREAMBLE2)) ?
2368 rate->val2 : rate->val;
2369 control.antenna_sel = local->conf.antenna_sel;
2370 control.power_level = local->conf.power_level;
2372 control.retry_limit = 1;
2373 control.rts_cts_duration = 0;
2377 wpa_s->mlme.probe_resp = skb_copy(skb, GFP_ATOMIC);
2378 if (wpa_s->mlme.probe_resp) {
2379 mgmt = (struct ieee80211_mgmt *)
2380 wpa_s->mlme.probe_resp->data;
2381 mgmt->frame_control =
2382 IEEE80211_FC(WLAN_FC_TYPE_MGMT,
2383 WLAN_FC_STYPE_PROBE_RESP);
2385 wpa_printf(MSG_DEBUG, "MLME: Could not allocate "
2386 "ProbeResp template for IBSS");
2389 if (local->hw->beacon_update &&
2390 local->hw->beacon_update(wpa_s, skb, &control) == 0) {
2391 wpa_printf(MSG_DEBUG, "MLME: Configured IBSS beacon "
2392 "template based on scan results");
2397 for (i = 0; i < bss->supp_rates_len; i++) {
2398 int rate = (bss->supp_rates[i] & 0x7f) * 5;
2399 if (local->conf.phymode == MODE_ATHEROS_TURBO)
2401 for (j = 0; j < local->num_curr_rates; j++)
2402 if (local->curr_rates[j].rate == rate)
2405 wpa_s->mlme.supp_rates_bits = rates;
2412 wpa_printf(MSG_DEBUG, "MLME: Failed to configure IBSS beacon "
2416 wpa_s->mlme.state = IEEE80211_IBSS_JOINED;
2417 ieee80211_reschedule_timer(wpa_s, IEEE80211_IBSS_MERGE_INTERVAL);
2424 static int ieee80211_sta_create_ibss(struct wpa_supplicant *wpa_s)
2426 struct ieee80211_sta_bss *bss;
2427 u8 bssid[ETH_ALEN], *pos;
2431 /* Easier testing, use fixed BSSID. */
2432 os_memset(bssid, 0xfe, ETH_ALEN);
2434 /* Generate random, not broadcast, locally administered BSSID. Mix in
2435 * own MAC address to make sure that devices that do not have proper
2436 * random number generator get different BSSID. */
2437 os_get_random(bssid, ETH_ALEN);
2438 for (i = 0; i < ETH_ALEN; i++)
2439 bssid[i] ^= wpa_s->own_addr[i];
2444 wpa_printf(MSG_DEBUG, "MLME: Creating new IBSS network, BSSID "
2445 MACSTR "", MAC2STR(bssid));
2447 bss = ieee80211_bss_add(wpa_s, bssid);
2452 if (local->conf.beacon_int == 0)
2453 local->conf.beacon_int = 100;
2454 bss->beacon_int = local->conf.beacon_int;
2455 bss->hw_mode = local->conf.phymode;
2456 bss->channel = local->conf.channel;
2457 bss->freq = local->conf.freq;
2459 os_get_time(&bss->last_update);
2460 bss->capability = host_to_le16(WLAN_CAPABILITY_IBSS);
2462 if (sdata->default_key) {
2463 bss->capability |= host_to_le16(WLAN_CAPABILITY_PRIVACY);
2465 sdata->drop_unencrypted = 0;
2466 bss->supp_rates_len = local->num_curr_rates;
2468 pos = bss->supp_rates;
2470 for (i = 0; i < local->num_curr_rates; i++) {
2471 int rate = local->curr_rates[i].rate;
2472 if (local->conf.phymode == MODE_ATHEROS_TURBO)
2474 *pos++ = (u8) (rate / 5);
2478 return ieee80211_sta_join_ibss(wpa_s, bss);
2483 static int ieee80211_sta_find_ibss(struct wpa_supplicant *wpa_s)
2485 struct ieee80211_sta_bss *bss;
2491 if (wpa_s->mlme.ssid_len == 0)
2494 active_ibss = ieee80211_sta_active_ibss(wpa_s);
2495 #ifdef IEEE80211_IBSS_DEBUG
2496 wpa_printf(MSG_DEBUG, "MLME: sta_find_ibss (active_ibss=%d)",
2498 #endif /* IEEE80211_IBSS_DEBUG */
2499 for (bss = wpa_s->mlme.sta_bss_list; bss; bss = bss->next) {
2500 if (wpa_s->mlme.ssid_len != bss->ssid_len ||
2501 os_memcmp(wpa_s->mlme.ssid, bss->ssid, bss->ssid_len) != 0
2502 || !(bss->capability & WLAN_CAPABILITY_IBSS))
2504 #ifdef IEEE80211_IBSS_DEBUG
2505 wpa_printf(MSG_DEBUG, " bssid=" MACSTR " found",
2506 MAC2STR(bss->bssid));
2507 #endif /* IEEE80211_IBSS_DEBUG */
2508 os_memcpy(bssid, bss->bssid, ETH_ALEN);
2511 os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0)
2515 #ifdef IEEE80211_IBSS_DEBUG
2516 wpa_printf(MSG_DEBUG, " sta_find_ibss: selected " MACSTR " current "
2517 MACSTR, MAC2STR(bssid), MAC2STR(wpa_s->bssid));
2518 #endif /* IEEE80211_IBSS_DEBUG */
2519 if (found && os_memcmp(wpa_s->bssid, bssid, ETH_ALEN) != 0 &&
2520 (bss = ieee80211_bss_get(wpa_s, bssid))) {
2521 wpa_printf(MSG_DEBUG, "MLME: Selected IBSS BSSID " MACSTR
2522 " based on configured SSID",
2524 return ieee80211_sta_join_ibss(wpa_s, bss);
2526 #ifdef IEEE80211_IBSS_DEBUG
2527 wpa_printf(MSG_DEBUG, " did not try to join ibss");
2528 #endif /* IEEE80211_IBSS_DEBUG */
2530 /* Selected IBSS not found in current scan results - try to scan */
2533 if (wpa_s->mlme.state == IEEE80211_IBSS_JOINED &&
2534 !ieee80211_sta_active_ibss(wpa_s)) {
2535 ieee80211_reschedule_timer(wpa_s,
2536 IEEE80211_IBSS_MERGE_INTERVAL);
2537 } else if (time_after(jiffies, wpa_s->mlme.last_scan_completed +
2538 IEEE80211_SCAN_INTERVAL)) {
2539 wpa_printf(MSG_DEBUG, "MLME: Trigger new scan to find an IBSS "
2541 return ieee80211_sta_req_scan(wpa_s->mlme.ssid,
2542 wpa_s->mlme.ssid_len);
2543 } else if (wpa_s->mlme.state != IEEE80211_IBSS_JOINED) {
2544 int interval = IEEE80211_SCAN_INTERVAL;
2546 if (time_after(jiffies, wpa_s->mlme.ibss_join_req +
2547 IEEE80211_IBSS_JOIN_TIMEOUT)) {
2548 if (wpa_s->mlme.create_ibss &&
2549 ieee80211_ibss_allowed(wpa_s))
2550 return ieee80211_sta_create_ibss(wpa_s);
2551 if (wpa_s->mlme.create_ibss) {
2552 wpa_printf(MSG_DEBUG, "MLME: IBSS not allowed "
2553 "on the configured channel %d "
2555 local->conf.channel,
2559 /* No IBSS found - decrease scan interval and continue
2561 interval = IEEE80211_SCAN_INTERVAL_SLOW;
2564 wpa_s->mlme.state = IEEE80211_IBSS_SEARCH;
2565 ieee80211_reschedule_timer(wpa_s, interval);
2574 int ieee80211_sta_get_ssid(struct wpa_supplicant *wpa_s, u8 *ssid,
2577 os_memcpy(ssid, wpa_s->mlme.ssid, wpa_s->mlme.ssid_len);
2578 *len = wpa_s->mlme.ssid_len;
2583 int ieee80211_sta_associate(struct wpa_supplicant *wpa_s,
2584 struct wpa_driver_associate_params *params)
2586 struct ieee80211_sta_bss *bss;
2589 wpa_s->mlme.bssid_set = 0;
2590 wpa_s->mlme.freq = params->freq;
2591 if (params->bssid) {
2592 bssid_changed = os_memcmp(wpa_s->bssid, params->bssid,
2594 os_memcpy(wpa_s->bssid, params->bssid, ETH_ALEN);
2596 wpas_notify_bssid_changed(wpa_s);
2598 if (!is_zero_ether_addr(params->bssid))
2599 wpa_s->mlme.bssid_set = 1;
2600 bss = ieee80211_bss_get(wpa_s, wpa_s->bssid);
2602 wpa_s->mlme.phymode = bss->hw_mode;
2603 wpa_s->mlme.channel = bss->channel;
2604 wpa_s->mlme.freq = bss->freq;
2609 /* TODO: This should always be done for IBSS, even if IEEE80211_QOS is
2611 if (local->hw->conf_tx) {
2612 struct ieee80211_tx_queue_params qparam;
2615 os_memset(&qparam, 0, sizeof(qparam));
2616 /* TODO: are these ok defaults for all hw_modes? */
2619 local->conf.phymode == MODE_IEEE80211B ? 31 : 15;
2620 qparam.cw_max = 1023;
2621 qparam.burst_time = 0;
2622 for (i = IEEE80211_TX_QUEUE_DATA0; i < NUM_TX_DATA_QUEUES; i++)
2624 local->hw->conf_tx(wpa_s, i + IEEE80211_TX_QUEUE_DATA0,
2627 /* IBSS uses different parameters for Beacon sending */
2631 local->hw->conf_tx(wpa_s, IEEE80211_TX_QUEUE_BEACON, &qparam);
2635 if (wpa_s->mlme.ssid_len != params->ssid_len ||
2636 os_memcmp(wpa_s->mlme.ssid, params->ssid, params->ssid_len) != 0)
2637 wpa_s->mlme.prev_bssid_set = 0;
2638 os_memcpy(wpa_s->mlme.ssid, params->ssid, params->ssid_len);
2639 os_memset(wpa_s->mlme.ssid + params->ssid_len, 0,
2640 MAX_SSID_LEN - params->ssid_len);
2641 wpa_s->mlme.ssid_len = params->ssid_len;
2642 wpa_s->mlme.ssid_set = 1;
2644 os_free(wpa_s->mlme.extra_ie);
2645 if (params->wpa_ie == NULL || params->wpa_ie_len == 0) {
2646 wpa_s->mlme.extra_ie = NULL;
2647 wpa_s->mlme.extra_ie_len = 0;
2649 wpa_s->mlme.extra_ie = os_malloc(params->wpa_ie_len);
2650 if (wpa_s->mlme.extra_ie == NULL) {
2651 wpa_s->mlme.extra_ie_len = 0;
2654 os_memcpy(wpa_s->mlme.extra_ie, params->wpa_ie,
2655 params->wpa_ie_len);
2656 wpa_s->mlme.extra_ie_len = params->wpa_ie_len;
2659 wpa_s->mlme.key_mgmt = params->key_mgmt_suite;
2661 ieee80211_sta_set_channel(wpa_s, wpa_s->mlme.phymode,
2662 wpa_s->mlme.channel, wpa_s->mlme.freq);
2664 if (params->mode == 1 && !wpa_s->mlme.bssid_set) {
2665 os_get_time(&wpa_s->mlme.ibss_join_req);
2666 wpa_s->mlme.state = IEEE80211_IBSS_SEARCH;
2667 return ieee80211_sta_find_ibss(wpa_s);
2670 if (wpa_s->mlme.bssid_set)
2671 ieee80211_sta_new_auth(wpa_s);
2677 static void ieee80211_sta_save_oper_chan(struct wpa_supplicant *wpa_s)
2679 wpa_s->mlme.scan_oper_channel = wpa_s->mlme.channel;
2680 wpa_s->mlme.scan_oper_freq = wpa_s->mlme.freq;
2681 wpa_s->mlme.scan_oper_phymode = wpa_s->mlme.phymode;
2685 static int ieee80211_sta_restore_oper_chan(struct wpa_supplicant *wpa_s)
2687 wpa_s->mlme.channel = wpa_s->mlme.scan_oper_channel;
2688 wpa_s->mlme.freq = wpa_s->mlme.scan_oper_freq;
2689 wpa_s->mlme.phymode = wpa_s->mlme.scan_oper_phymode;
2690 if (wpa_s->mlme.freq == 0)
2692 return ieee80211_sta_set_channel(wpa_s, wpa_s->mlme.phymode,
2693 wpa_s->mlme.channel,
2698 static int ieee80211_active_scan(struct wpa_supplicant *wpa_s)
2703 for (m = 0; m < wpa_s->mlme.num_modes; m++) {
2704 struct hostapd_hw_modes *mode = &wpa_s->mlme.modes[m];
2705 if ((int) mode->mode != (int) wpa_s->mlme.phymode)
2707 for (c = 0; c < mode->num_channels; c++) {
2708 struct hostapd_channel_data *chan = &mode->channels[c];
2709 if (!(chan->flag & HOSTAPD_CHAN_DISABLED) &&
2710 chan->chan == wpa_s->mlme.channel) {
2711 if (!(chan->flag & HOSTAPD_CHAN_PASSIVE_SCAN))
2722 static void ieee80211_sta_scan_timer(void *eloop_ctx, void *timeout_ctx)
2724 struct wpa_supplicant *wpa_s = eloop_ctx;
2725 struct hostapd_hw_modes *mode;
2726 struct hostapd_channel_data *chan;
2729 struct wpa_ssid *ssid = wpa_s->current_ssid;
2732 if (!wpa_s->mlme.sta_scanning || wpa_s->mlme.modes == NULL)
2735 adhoc = ssid && ssid->mode == 1;
2737 switch (wpa_s->mlme.scan_state) {
2738 case SCAN_SET_CHANNEL:
2739 mode = &wpa_s->mlme.modes[wpa_s->mlme.scan_hw_mode_idx];
2740 if (wpa_s->mlme.scan_hw_mode_idx >=
2741 (int) wpa_s->mlme.num_modes ||
2742 (wpa_s->mlme.scan_hw_mode_idx + 1 ==
2743 (int) wpa_s->mlme.num_modes
2744 && wpa_s->mlme.scan_channel_idx >= mode->num_channels)) {
2745 if (ieee80211_sta_restore_oper_chan(wpa_s)) {
2746 wpa_printf(MSG_DEBUG, "MLME: failed to "
2747 "restore operational channel after "
2750 wpa_printf(MSG_DEBUG, "MLME: scan completed");
2751 wpa_s->mlme.sta_scanning = 0;
2752 os_get_time(&wpa_s->mlme.last_scan_completed);
2753 wpa_supplicant_event(wpa_s, EVENT_SCAN_RESULTS, NULL);
2755 if (!wpa_s->mlme.bssid_set ||
2756 (wpa_s->mlme.state ==
2757 IEEE80211_IBSS_JOINED &&
2758 !ieee80211_sta_active_ibss(wpa_s)))
2759 ieee80211_sta_find_ibss(wpa_s);
2763 skip = !(wpa_s->mlme.hw_modes & (1 << mode->mode));
2764 chan = &mode->channels[wpa_s->mlme.scan_channel_idx];
2765 if ((chan->flag & HOSTAPD_CHAN_DISABLED) ||
2766 (adhoc && (chan->flag & HOSTAPD_CHAN_NO_IBSS)) ||
2767 (wpa_s->mlme.hw_modes & (1 << HOSTAPD_MODE_IEEE80211G) &&
2768 mode->mode == HOSTAPD_MODE_IEEE80211B &&
2769 wpa_s->mlme.scan_skip_11b))
2773 wpa_printf(MSG_MSGDUMP,
2774 "MLME: scan channel %d (%d MHz)",
2775 chan->chan, chan->freq);
2777 wpa_s->mlme.channel = chan->chan;
2778 wpa_s->mlme.freq = chan->freq;
2779 wpa_s->mlme.phymode = mode->mode;
2780 if (ieee80211_sta_set_channel(wpa_s, mode->mode,
2781 chan->chan, chan->freq))
2783 wpa_printf(MSG_DEBUG, "MLME: failed to set "
2784 "channel %d (%d MHz) for scan",
2785 chan->chan, chan->freq);
2790 wpa_s->mlme.scan_channel_idx++;
2791 if (wpa_s->mlme.scan_channel_idx >=
2792 wpa_s->mlme.modes[wpa_s->mlme.scan_hw_mode_idx].
2794 wpa_s->mlme.scan_hw_mode_idx++;
2795 wpa_s->mlme.scan_channel_idx = 0;
2803 timeout = IEEE80211_PROBE_DELAY;
2804 wpa_s->mlme.scan_state = SCAN_SEND_PROBE;
2806 case SCAN_SEND_PROBE:
2807 if (ieee80211_active_scan(wpa_s)) {
2808 ieee80211_send_probe_req(wpa_s, NULL,
2809 wpa_s->mlme.scan_ssid,
2810 wpa_s->mlme.scan_ssid_len);
2811 timeout = IEEE80211_CHANNEL_TIME;
2813 timeout = IEEE80211_PASSIVE_CHANNEL_TIME;
2815 wpa_s->mlme.scan_state = SCAN_SET_CHANNEL;
2819 eloop_register_timeout(timeout / 1000, 1000 * (timeout % 1000),
2820 ieee80211_sta_scan_timer, wpa_s, NULL);
2824 int ieee80211_sta_req_scan(struct wpa_supplicant *wpa_s, const u8 *ssid,
2827 if (ssid_len > MAX_SSID_LEN)
2830 /* MLME-SCAN.request (page 118) page 144 (11.1.3.1)
2831 * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS
2834 * ScanType: ACTIVE, PASSIVE
2835 * ProbeDelay: delay (in microseconds) to be used prior to transmitting
2836 * a Probe frame during active scanning
2838 * MinChannelTime (>= ProbeDelay), in TU
2839 * MaxChannelTime: (>= MinChannelTime), in TU
2842 /* MLME-SCAN.confirm
2844 * ResultCode: SUCCESS, INVALID_PARAMETERS
2847 /* TODO: if assoc, move to power save mode for the duration of the
2850 if (wpa_s->mlme.sta_scanning)
2853 wpa_printf(MSG_DEBUG, "MLME: starting scan");
2855 ieee80211_sta_save_oper_chan(wpa_s);
2857 wpa_s->mlme.sta_scanning = 1;
2858 /* TODO: stop TX queue? */
2861 wpa_s->mlme.scan_ssid_len = ssid_len;
2862 os_memcpy(wpa_s->mlme.scan_ssid, ssid, ssid_len);
2864 wpa_s->mlme.scan_ssid_len = 0;
2865 wpa_s->mlme.scan_skip_11b = 1; /* FIX: clear this is 11g is not
2867 wpa_s->mlme.scan_state = SCAN_SET_CHANNEL;
2868 wpa_s->mlme.scan_hw_mode_idx = 0;
2869 wpa_s->mlme.scan_channel_idx = 0;
2870 eloop_register_timeout(0, 1, ieee80211_sta_scan_timer, wpa_s, NULL);
2876 struct wpa_scan_results *
2877 ieee80211_sta_get_scan_results(struct wpa_supplicant *wpa_s)
2880 struct wpa_scan_results *res;
2881 struct wpa_scan_res *r;
2882 struct ieee80211_sta_bss *bss;
2884 res = os_zalloc(sizeof(*res));
2885 for (bss = wpa_s->mlme.sta_bss_list; bss; bss = bss->next)
2887 res->res = os_zalloc(ap_num * sizeof(struct wpa_scan_res *));
2888 if (res->res == NULL) {
2893 for (bss = wpa_s->mlme.sta_bss_list; bss; bss = bss->next) {
2894 r = os_zalloc(sizeof(*r) + bss->ie_len);
2897 os_memcpy(r->bssid, bss->bssid, ETH_ALEN);
2898 r->freq = bss->freq;
2899 r->beacon_int = bss->beacon_int;
2900 r->caps = bss->capability;
2901 r->level = bss->rssi;
2902 r->tsf = bss->timestamp;
2904 r->ie_len = bss->ie_len;
2905 os_memcpy(r + 1, bss->ie, bss->ie_len);
2908 res->res[res->num++] = r;
2916 struct sta_info * ieee80211_ibss_add_sta(struct wpa_supplicant *wpa_s,
2917 struct sk_buff *skb, u8 *bssid,
2920 struct ieee80211_local *local = dev->priv;
2921 struct list_head *ptr;
2922 struct sta_info *sta;
2923 struct wpa_supplicant *sta_dev = NULL;
2925 /* TODO: Could consider removing the least recently used entry and
2926 * allow new one to be added. */
2927 if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) {
2928 if (net_ratelimit()) {
2929 wpa_printf(MSG_DEBUG, "MLME: No room for a new IBSS "
2930 "STA entry " MACSTR, MAC2STR(addr));
2935 spin_lock_bh(&local->sub_if_lock);
2936 list_for_each(ptr, &local->sub_if_list) {
2937 sdata = list_entry(ptr, struct ieee80211_sub_if_data, list);
2938 if (sdata->type == IEEE80211_SUB_IF_TYPE_STA &&
2939 os_memcmp(bssid, sdata->u.sta.bssid, ETH_ALEN) == 0) {
2940 sta_dev = sdata->dev;
2944 spin_unlock_bh(&local->sub_if_lock);
2946 if (sta_dev == NULL)
2949 wpa_printf(MSG_DEBUG, "MLME: Adding new IBSS station " MACSTR
2950 " (dev=%s)", MAC2STR(addr), sta_dev->name);
2952 sta = sta_info_add(wpa_s, addr);
2958 sta->supp_rates = wpa_s->mlme.supp_rates_bits;
2960 rate_control_rate_init(local, sta);
2962 return sta; /* caller will call sta_info_release() */
2967 int ieee80211_sta_deauthenticate(struct wpa_supplicant *wpa_s, u16 reason)
2969 wpa_printf(MSG_DEBUG, "MLME: deauthenticate(reason=%d)", reason);
2971 ieee80211_send_deauth(wpa_s, reason);
2972 ieee80211_set_associated(wpa_s, 0);
2977 int ieee80211_sta_disassociate(struct wpa_supplicant *wpa_s, u16 reason)
2979 wpa_printf(MSG_DEBUG, "MLME: disassociate(reason=%d)", reason);
2981 if (!wpa_s->mlme.associated)
2984 ieee80211_send_disassoc(wpa_s, reason);
2985 ieee80211_set_associated(wpa_s, 0);
2990 void ieee80211_sta_rx(struct wpa_supplicant *wpa_s, const u8 *buf, size_t len,
2991 struct ieee80211_rx_status *rx_status)
2993 struct ieee80211_mgmt *mgmt;
2997 /* wpa_hexdump(MSG_MSGDUMP, "MLME: Received frame", buf, len); */
2999 if (wpa_s->mlme.sta_scanning) {
3000 ieee80211_sta_rx_scan(wpa_s, buf, len, rx_status);
3007 mgmt = (struct ieee80211_mgmt *) buf;
3008 fc = le_to_host16(mgmt->frame_control);
3010 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT)
3011 ieee80211_sta_rx_mgmt(wpa_s, buf, len, rx_status);
3012 else if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_DATA) {
3013 if ((fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) !=
3016 /* mgmt->sa is actually BSSID for FromDS data frames */
3017 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) != 0)
3019 /* Skip IEEE 802.11 and LLC headers */
3021 if (WPA_GET_BE16(pos) != ETH_P_EAPOL)
3024 /* mgmt->bssid is actually BSSID for SA data frames */
3025 wpa_supplicant_rx_eapol(wpa_s, mgmt->bssid,
3026 pos, buf + len - pos);
3031 void ieee80211_sta_free_hw_features(struct hostapd_hw_modes *hw_features,
3032 size_t num_hw_features)
3036 if (hw_features == NULL)
3039 for (i = 0; i < num_hw_features; i++) {
3040 os_free(hw_features[i].channels);
3041 os_free(hw_features[i].rates);
3044 os_free(hw_features);
3048 int ieee80211_sta_init(struct wpa_supplicant *wpa_s)
3050 u16 num_modes, flags;
3052 wpa_s->mlme.modes = wpa_drv_get_hw_feature_data(wpa_s, &num_modes,
3054 if (wpa_s->mlme.modes == NULL) {
3055 wpa_printf(MSG_ERROR, "MLME: Failed to read supported "
3056 "channels and rates from the driver");
3060 wpa_s->mlme.num_modes = num_modes;
3062 wpa_s->mlme.hw_modes = 1 << HOSTAPD_MODE_IEEE80211A;
3063 wpa_s->mlme.hw_modes |= 1 << HOSTAPD_MODE_IEEE80211B;
3064 wpa_s->mlme.hw_modes |= 1 << HOSTAPD_MODE_IEEE80211G;
3066 wpa_s->mlme.wmm_enabled = 1;
3072 void ieee80211_sta_deinit(struct wpa_supplicant *wpa_s)
3074 eloop_cancel_timeout(ieee80211_sta_timer, wpa_s, NULL);
3075 eloop_cancel_timeout(ieee80211_sta_scan_timer, wpa_s, NULL);
3076 os_free(wpa_s->mlme.extra_ie);
3077 wpa_s->mlme.extra_ie = NULL;
3078 os_free(wpa_s->mlme.extra_probe_ie);
3079 wpa_s->mlme.extra_probe_ie = NULL;
3080 os_free(wpa_s->mlme.assocreq_ies);
3081 wpa_s->mlme.assocreq_ies = NULL;
3082 os_free(wpa_s->mlme.assocresp_ies);
3083 wpa_s->mlme.assocresp_ies = NULL;
3084 ieee80211_bss_list_deinit(wpa_s);
3085 ieee80211_sta_free_hw_features(wpa_s->mlme.modes,
3086 wpa_s->mlme.num_modes);
3087 #ifdef CONFIG_IEEE80211R
3088 os_free(wpa_s->mlme.ft_ies);
3089 wpa_s->mlme.ft_ies = NULL;
3090 wpa_s->mlme.ft_ies_len = 0;
3091 #endif /* CONFIG_IEEE80211R */
3095 #ifdef CONFIG_IEEE80211R
3097 int ieee80211_sta_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
3098 const u8 *ies, size_t ies_len)
3101 wpa_printf(MSG_DEBUG, "MLME: Clear FT mobility domain");
3102 os_memset(wpa_s->mlme.current_md, 0, MOBILITY_DOMAIN_ID_LEN);
3104 wpa_printf(MSG_DEBUG, "MLME: Update FT IEs for MD " MACSTR,
3106 os_memcpy(wpa_s->mlme.current_md, md, MOBILITY_DOMAIN_ID_LEN);
3109 wpa_hexdump(MSG_DEBUG, "MLME: FT IEs", ies, ies_len);
3110 os_free(wpa_s->mlme.ft_ies);
3111 wpa_s->mlme.ft_ies = os_malloc(ies_len);
3112 if (wpa_s->mlme.ft_ies == NULL)
3114 os_memcpy(wpa_s->mlme.ft_ies, ies, ies_len);
3115 wpa_s->mlme.ft_ies_len = ies_len;
3121 int ieee80211_sta_send_ft_action(struct wpa_supplicant *wpa_s, u8 action,
3122 const u8 *target_ap,
3123 const u8 *ies, size_t ies_len)
3127 struct ieee80211_mgmt *mgmt;
3131 * Action frame payload:
3132 * Category[1] = 6 (Fast BSS Transition)
3133 * Action[1] = 1 (Fast BSS Transition Request)
3139 buf = os_zalloc(sizeof(*mgmt) + ies_len);
3141 wpa_printf(MSG_DEBUG, "MLME: Failed to allocate buffer for "
3146 mgmt = (struct ieee80211_mgmt *) buf;
3148 os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
3149 os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
3150 os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
3151 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
3152 WLAN_FC_STYPE_ACTION);
3153 mgmt->u.action.category = WLAN_ACTION_FT;
3154 mgmt->u.action.u.ft_action_req.action = action;
3155 os_memcpy(mgmt->u.action.u.ft_action_req.sta_addr, wpa_s->own_addr,
3157 os_memcpy(mgmt->u.action.u.ft_action_req.target_ap_addr, target_ap,
3159 os_memcpy(mgmt->u.action.u.ft_action_req.variable, ies, ies_len);
3160 len += 1 + sizeof(mgmt->u.action.u.ft_action_req) + ies_len;
3162 wpa_printf(MSG_DEBUG, "MLME: Send FT Action Frame: Action=%d "
3163 "Target AP=" MACSTR " body_len=%lu",
3164 action, MAC2STR(target_ap), (unsigned long) ies_len);
3166 res = ieee80211_sta_tx(wpa_s, buf, len);
3172 #endif /* CONFIG_IEEE80211R */
3175 int ieee80211_sta_set_probe_req_ie(struct wpa_supplicant *wpa_s, const u8 *ies,
3178 os_free(wpa_s->mlme.extra_probe_ie);
3179 wpa_s->mlme.extra_probe_ie = NULL;
3180 wpa_s->mlme.extra_probe_ie_len = 0;
3185 wpa_s->mlme.extra_probe_ie = os_malloc(ies_len);
3186 if (wpa_s->mlme.extra_probe_ie == NULL)
3189 os_memcpy(wpa_s->mlme.extra_probe_ie, ies, ies_len);
3190 wpa_s->mlme.extra_probe_ie_len = ies_len;