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"
25 #include "rsn_supp/wpa.h"
26 #include "common/ieee802_11_defs.h"
27 #include "common/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);
99 static int ieee80211_sta_set_probe_req_ie(struct wpa_supplicant *wpa_s,
100 const u8 *ies, size_t ies_len);
103 static int ieee80211_sta_set_channel(struct wpa_supplicant *wpa_s,
104 enum hostapd_hw_mode phymode, int chan,
108 struct hostapd_hw_modes *mode;
110 for (i = 0; i < wpa_s->mlme.num_modes; i++) {
111 mode = &wpa_s->mlme.modes[i];
112 if (mode->mode == phymode) {
113 wpa_s->mlme.curr_rates = mode->rates;
114 wpa_s->mlme.num_curr_rates = mode->num_rates;
119 return wpa_drv_set_channel(wpa_s, phymode, chan, freq);
123 static int ecw2cw(int ecw)
134 static void ieee80211_sta_wmm_params(struct wpa_supplicant *wpa_s,
135 const u8 *wmm_param, size_t wmm_param_len)
142 if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
144 count = wmm_param[6] & 0x0f;
145 if (count == wpa_s->mlme.wmm_last_param_set)
147 wpa_s->mlme.wmm_last_param_set = count;
150 left = wmm_param_len - 8;
153 for (; left >= 4; left -= 4, pos += 4) {
154 int aci = (pos[0] >> 5) & 0x03;
155 int acm = (pos[0] >> 4) & 0x01;
156 int aifs, cw_max, cw_min, burst_time;
161 wmm_acm |= BIT(1) | BIT(2); /* BK/- */
165 wmm_acm |= BIT(4) | BIT(5); /* CL/VI */
169 wmm_acm |= BIT(6) | BIT(7); /* VO/NC */
174 wmm_acm |= BIT(0) | BIT(3); /* BE/EE */
178 aifs = pos[0] & 0x0f;
179 cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
180 cw_min = ecw2cw(pos[1] & 0x0f);
181 /* TXOP is in units of 32 usec; burst_time in 0.1 ms */
182 burst_time = (pos[2] | (pos[3] << 8)) * 32 / 100;
183 wpa_printf(MSG_DEBUG, "MLME: WMM aci=%d acm=%d aifs=%d "
184 "cWmin=%d cWmax=%d burst=%d",
185 aci, acm, aifs, cw_min, cw_max, burst_time);
186 /* TODO: driver configuration */
191 static void ieee80211_set_associated(struct wpa_supplicant *wpa_s, int assoc)
193 if (wpa_s->mlme.associated == assoc && !assoc)
196 wpa_s->mlme.associated = assoc;
199 union wpa_event_data data;
200 os_memset(&data, 0, sizeof(data));
201 wpa_s->mlme.prev_bssid_set = 1;
202 os_memcpy(wpa_s->mlme.prev_bssid, wpa_s->bssid, ETH_ALEN);
203 data.assoc_info.req_ies = wpa_s->mlme.assocreq_ies;
204 data.assoc_info.req_ies_len = wpa_s->mlme.assocreq_ies_len;
205 data.assoc_info.resp_ies = wpa_s->mlme.assocresp_ies;
206 data.assoc_info.resp_ies_len = wpa_s->mlme.assocresp_ies_len;
207 data.assoc_info.freq = wpa_s->mlme.freq;
208 wpa_supplicant_event(wpa_s, EVENT_ASSOC, &data);
210 wpa_supplicant_event(wpa_s, EVENT_DISASSOC, NULL);
212 os_get_time(&wpa_s->mlme.last_probe);
216 static int ieee80211_sta_tx(struct wpa_supplicant *wpa_s, const u8 *buf,
219 return wpa_drv_send_mlme(wpa_s, buf, len);
223 static void ieee80211_send_auth(struct wpa_supplicant *wpa_s,
224 int transaction, const u8 *extra,
225 size_t extra_len, int encrypt)
229 struct ieee80211_mgmt *mgmt;
231 buf = os_malloc(sizeof(*mgmt) + 6 + extra_len);
233 wpa_printf(MSG_DEBUG, "MLME: failed to allocate buffer for "
238 mgmt = (struct ieee80211_mgmt *) buf;
240 os_memset(mgmt, 0, 24 + 6);
241 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
244 mgmt->frame_control |= host_to_le16(WLAN_FC_ISWEP);
245 os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
246 os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
247 os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
248 mgmt->u.auth.auth_alg = host_to_le16(wpa_s->mlme.auth_alg);
249 mgmt->u.auth.auth_transaction = host_to_le16(transaction);
250 wpa_s->mlme.auth_transaction = transaction + 1;
251 mgmt->u.auth.status_code = host_to_le16(0);
253 os_memcpy(buf + len, extra, extra_len);
257 ieee80211_sta_tx(wpa_s, buf, len);
262 static void ieee80211_reschedule_timer(struct wpa_supplicant *wpa_s, int ms)
264 eloop_cancel_timeout(ieee80211_sta_timer, wpa_s, NULL);
265 eloop_register_timeout(ms / 1000, 1000 * (ms % 1000),
266 ieee80211_sta_timer, wpa_s, NULL);
270 static void ieee80211_authenticate(struct wpa_supplicant *wpa_s)
275 wpa_s->mlme.auth_tries++;
276 if (wpa_s->mlme.auth_tries > IEEE80211_AUTH_MAX_TRIES) {
277 wpa_printf(MSG_DEBUG, "MLME: authentication with AP " MACSTR
278 " timed out", MAC2STR(wpa_s->bssid));
282 wpa_s->mlme.state = IEEE80211_AUTHENTICATE;
283 wpa_printf(MSG_DEBUG, "MLME: authenticate with AP " MACSTR,
284 MAC2STR(wpa_s->bssid));
289 #ifdef CONFIG_IEEE80211R
290 if ((wpa_s->mlme.key_mgmt == KEY_MGMT_FT_802_1X ||
291 wpa_s->mlme.key_mgmt == KEY_MGMT_FT_PSK) &&
292 wpa_s->mlme.ft_ies) {
293 struct ieee80211_sta_bss *bss;
294 struct rsn_mdie *mdie = NULL;
295 bss = ieee80211_bss_get(wpa_s, wpa_s->bssid);
296 if (bss && bss->mdie_len >= 2 + sizeof(*mdie))
297 mdie = (struct rsn_mdie *) (bss->mdie + 2);
299 os_memcmp(mdie->mobility_domain, wpa_s->mlme.current_md,
300 MOBILITY_DOMAIN_ID_LEN) == 0) {
301 wpa_printf(MSG_DEBUG, "MLME: Trying to use FT "
303 wpa_s->mlme.auth_alg = WLAN_AUTH_FT;
304 extra = wpa_s->mlme.ft_ies;
305 extra_len = wpa_s->mlme.ft_ies_len;
308 #endif /* CONFIG_IEEE80211R */
310 ieee80211_send_auth(wpa_s, 1, extra, extra_len, 0);
312 ieee80211_reschedule_timer(wpa_s, IEEE80211_AUTH_TIMEOUT);
316 static void ieee80211_send_assoc(struct wpa_supplicant *wpa_s)
318 struct ieee80211_mgmt *mgmt;
322 struct ieee80211_sta_bss *bss;
326 if (wpa_s->mlme.curr_rates == NULL) {
327 wpa_printf(MSG_DEBUG, "MLME: curr_rates not set for assoc");
331 buflen = sizeof(*mgmt) + 200 + wpa_s->mlme.extra_ie_len +
332 wpa_s->mlme.ssid_len;
333 #ifdef CONFIG_IEEE80211R
334 if (wpa_s->mlme.ft_ies)
335 buflen += wpa_s->mlme.ft_ies_len;
336 #endif /* CONFIG_IEEE80211R */
337 buf = os_malloc(buflen);
339 wpa_printf(MSG_DEBUG, "MLME: failed to allocate buffer for "
345 capab = wpa_s->mlme.capab;
346 if (wpa_s->mlme.phymode == HOSTAPD_MODE_IEEE80211G) {
347 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME |
348 WLAN_CAPABILITY_SHORT_PREAMBLE;
350 bss = ieee80211_bss_get(wpa_s, wpa_s->bssid);
352 if (bss->capability & WLAN_CAPABILITY_PRIVACY)
353 capab |= WLAN_CAPABILITY_PRIVACY;
359 mgmt = (struct ieee80211_mgmt *) buf;
361 os_memset(mgmt, 0, 24);
362 os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
363 os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
364 os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
366 if (wpa_s->mlme.prev_bssid_set) {
368 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
369 WLAN_FC_STYPE_REASSOC_REQ);
370 mgmt->u.reassoc_req.capab_info = host_to_le16(capab);
371 mgmt->u.reassoc_req.listen_interval = host_to_le16(1);
372 os_memcpy(mgmt->u.reassoc_req.current_ap,
373 wpa_s->mlme.prev_bssid,
377 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
378 WLAN_FC_STYPE_ASSOC_REQ);
379 mgmt->u.assoc_req.capab_info = host_to_le16(capab);
380 mgmt->u.assoc_req.listen_interval = host_to_le16(1);
384 ies = pos = buf + blen;
385 blen += 2 + wpa_s->mlme.ssid_len;
386 *pos++ = WLAN_EID_SSID;
387 *pos++ = wpa_s->mlme.ssid_len;
388 os_memcpy(pos, wpa_s->mlme.ssid, wpa_s->mlme.ssid_len);
390 len = wpa_s->mlme.num_curr_rates;
395 *pos++ = WLAN_EID_SUPP_RATES;
397 for (i = 0; i < len; i++)
398 *pos++ = (u8) (wpa_s->mlme.curr_rates[i] / 5);
400 if (wpa_s->mlme.num_curr_rates > len) {
402 blen += wpa_s->mlme.num_curr_rates - len + 2;
403 *pos++ = WLAN_EID_EXT_SUPP_RATES;
404 *pos++ = wpa_s->mlme.num_curr_rates - len;
405 for (i = len; i < wpa_s->mlme.num_curr_rates; i++)
406 *pos++ = (u8) (wpa_s->mlme.curr_rates[i] / 5);
409 if (wpa_s->mlme.extra_ie && wpa_s->mlme.auth_alg != WLAN_AUTH_FT) {
411 blen += wpa_s->mlme.extra_ie_len;
412 os_memcpy(pos, wpa_s->mlme.extra_ie, wpa_s->mlme.extra_ie_len);
415 #ifdef CONFIG_IEEE80211R
416 if ((wpa_s->mlme.key_mgmt == KEY_MGMT_FT_802_1X ||
417 wpa_s->mlme.key_mgmt == KEY_MGMT_FT_PSK) &&
418 wpa_s->mlme.auth_alg != WLAN_AUTH_FT &&
420 bss->mdie_len >= 2 + sizeof(struct rsn_mdie) &&
421 bss->mdie[1] >= sizeof(struct rsn_mdie)) {
423 blen += 2 + sizeof(struct rsn_mdie);
424 *pos++ = WLAN_EID_MOBILITY_DOMAIN;
425 *pos++ = sizeof(struct rsn_mdie);
426 os_memcpy(pos, bss->mdie + 2, MOBILITY_DOMAIN_ID_LEN);
427 pos += MOBILITY_DOMAIN_ID_LEN;
428 *pos++ = 0; /* FIX: copy from the target AP's MDIE */
431 if ((wpa_s->mlme.key_mgmt == KEY_MGMT_FT_802_1X ||
432 wpa_s->mlme.key_mgmt == KEY_MGMT_FT_PSK) &&
433 wpa_s->mlme.auth_alg == WLAN_AUTH_FT && wpa_s->mlme.ft_ies) {
435 os_memcpy(pos, wpa_s->mlme.ft_ies, wpa_s->mlme.ft_ies_len);
436 pos += wpa_s->mlme.ft_ies_len;
437 blen += wpa_s->mlme.ft_ies_len;
439 #endif /* CONFIG_IEEE80211R */
441 if (wmm && wpa_s->mlme.wmm_enabled) {
444 *pos++ = WLAN_EID_VENDOR_SPECIFIC;
445 *pos++ = 7; /* len */
446 *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */
449 *pos++ = 2; /* WMM */
450 *pos++ = 0; /* WMM info */
451 *pos++ = 1; /* WMM ver */
455 os_free(wpa_s->mlme.assocreq_ies);
456 wpa_s->mlme.assocreq_ies_len = (buf + blen) - ies;
457 wpa_s->mlme.assocreq_ies = os_malloc(wpa_s->mlme.assocreq_ies_len);
458 if (wpa_s->mlme.assocreq_ies) {
459 os_memcpy(wpa_s->mlme.assocreq_ies, ies,
460 wpa_s->mlme.assocreq_ies_len);
463 ieee80211_sta_tx(wpa_s, buf, blen);
468 static void ieee80211_send_deauth(struct wpa_supplicant *wpa_s, u16 reason)
472 struct ieee80211_mgmt *mgmt;
474 buf = os_zalloc(sizeof(*mgmt));
476 wpa_printf(MSG_DEBUG, "MLME: failed to allocate buffer for "
481 mgmt = (struct ieee80211_mgmt *) buf;
483 os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
484 os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
485 os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
486 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
487 WLAN_FC_STYPE_DEAUTH);
489 mgmt->u.deauth.reason_code = host_to_le16(reason);
491 ieee80211_sta_tx(wpa_s, buf, len);
496 static void ieee80211_send_disassoc(struct wpa_supplicant *wpa_s, u16 reason)
500 struct ieee80211_mgmt *mgmt;
502 buf = os_zalloc(sizeof(*mgmt));
504 wpa_printf(MSG_DEBUG, "MLME: failed to allocate buffer for "
509 mgmt = (struct ieee80211_mgmt *) buf;
511 os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
512 os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
513 os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
514 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
515 WLAN_FC_STYPE_DISASSOC);
517 mgmt->u.disassoc.reason_code = host_to_le16(reason);
519 ieee80211_sta_tx(wpa_s, buf, len);
524 static int ieee80211_privacy_mismatch(struct wpa_supplicant *wpa_s)
526 struct ieee80211_sta_bss *bss;
529 if (wpa_s->mlme.mixed_cell ||
530 wpa_s->mlme.key_mgmt != KEY_MGMT_NONE)
533 bss = ieee80211_bss_get(wpa_s, wpa_s->bssid);
537 if (ieee80211_sta_wep_configured(wpa_s) !=
538 !!(bss->capability & WLAN_CAPABILITY_PRIVACY))
545 static void ieee80211_associate(struct wpa_supplicant *wpa_s)
547 wpa_s->mlme.assoc_tries++;
548 if (wpa_s->mlme.assoc_tries > IEEE80211_ASSOC_MAX_TRIES) {
549 wpa_printf(MSG_DEBUG, "MLME: association with AP " MACSTR
550 " timed out", MAC2STR(wpa_s->bssid));
554 wpa_s->mlme.state = IEEE80211_ASSOCIATE;
555 wpa_printf(MSG_DEBUG, "MLME: associate with AP " MACSTR,
556 MAC2STR(wpa_s->bssid));
557 if (ieee80211_privacy_mismatch(wpa_s)) {
558 wpa_printf(MSG_DEBUG, "MLME: mismatch in privacy "
559 "configuration and mixed-cell disabled - abort "
564 ieee80211_send_assoc(wpa_s);
566 ieee80211_reschedule_timer(wpa_s, IEEE80211_ASSOC_TIMEOUT);
570 static void ieee80211_associated(struct wpa_supplicant *wpa_s)
574 /* TODO: start monitoring current AP signal quality and number of
575 * missed beacons. Scan other channels every now and then and search
577 /* TODO: remove expired BSSes */
579 wpa_s->mlme.state = IEEE80211_ASSOCIATED;
582 sta = sta_info_get(local, wpa_s->bssid);
584 wpa_printf(MSG_DEBUG "MLME: No STA entry for own AP " MACSTR,
585 MAC2STR(wpa_s->bssid));
589 if (time_after(jiffies,
590 sta->last_rx + IEEE80211_MONITORING_INTERVAL)) {
591 if (wpa_s->mlme.probereq_poll) {
592 wpa_printf(MSG_DEBUG "MLME: No ProbeResp from "
593 "current AP " MACSTR " - assume "
595 MAC2STR(wpa_s->bssid));
598 ieee80211_send_probe_req(
600 wpa_s->mlme.scan_ssid,
601 wpa_s->mlme.scan_ssid_len);
602 wpa_s->mlme.probereq_poll = 1;
605 wpa_s->mlme.probereq_poll = 0;
606 if (time_after(jiffies, wpa_s->mlme.last_probe +
607 IEEE80211_PROBE_INTERVAL)) {
608 wpa_s->mlme.last_probe = jiffies;
609 ieee80211_send_probe_req(wpa_s->bssid,
611 wpa_s->mlme.ssid_len);
614 sta_info_release(local, sta);
620 wpa_supplicant_event(wpa_s, EVENT_DISASSOC, NULL);
621 ieee80211_reschedule_timer(wpa_s,
622 IEEE80211_MONITORING_INTERVAL +
625 ieee80211_reschedule_timer(wpa_s,
626 IEEE80211_MONITORING_INTERVAL);
631 static void ieee80211_send_probe_req(struct wpa_supplicant *wpa_s,
633 const u8 *ssid, size_t ssid_len)
637 struct ieee80211_mgmt *mgmt;
638 u8 *pos, *supp_rates;
639 u8 *esupp_rates = NULL;
642 buf = os_malloc(sizeof(*mgmt) + 200 + wpa_s->mlme.extra_probe_ie_len);
644 wpa_printf(MSG_DEBUG, "MLME: failed to allocate buffer for "
649 mgmt = (struct ieee80211_mgmt *) buf;
651 os_memset(mgmt, 0, 24);
652 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
653 WLAN_FC_STYPE_PROBE_REQ);
654 os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
656 os_memcpy(mgmt->da, dst, ETH_ALEN);
657 os_memcpy(mgmt->bssid, dst, ETH_ALEN);
659 os_memset(mgmt->da, 0xff, ETH_ALEN);
660 os_memset(mgmt->bssid, 0xff, ETH_ALEN);
664 *pos++ = WLAN_EID_SSID;
666 os_memcpy(pos, ssid, ssid_len);
668 supp_rates = buf + len;
670 supp_rates[0] = WLAN_EID_SUPP_RATES;
672 for (i = 0; i < wpa_s->mlme.num_curr_rates; i++) {
677 } else if (supp_rates[1] == 8) {
679 esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES;
681 pos = &esupp_rates[2];
688 *pos++ = wpa_s->mlme.curr_rates[i] / 5;
691 if (wpa_s->mlme.extra_probe_ie) {
692 os_memcpy(pos, wpa_s->mlme.extra_probe_ie,
693 wpa_s->mlme.extra_probe_ie_len);
694 len += wpa_s->mlme.extra_probe_ie_len;
697 ieee80211_sta_tx(wpa_s, buf, len);
702 static int ieee80211_sta_wep_configured(struct wpa_supplicant *wpa_s)
705 if (sdata == NULL || sdata->default_key == NULL ||
706 sdata->default_key->alg != ALG_WEP)
715 static void ieee80211_auth_completed(struct wpa_supplicant *wpa_s)
717 wpa_printf(MSG_DEBUG, "MLME: authenticated");
718 wpa_s->mlme.authenticated = 1;
719 ieee80211_associate(wpa_s);
723 static void ieee80211_auth_challenge(struct wpa_supplicant *wpa_s,
724 struct ieee80211_mgmt *mgmt,
726 struct ieee80211_rx_status *rx_status)
729 struct ieee802_11_elems elems;
731 wpa_printf(MSG_DEBUG, "MLME: replying to auth challenge");
732 pos = mgmt->u.auth.variable;
733 if (ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems, 0)
735 wpa_printf(MSG_DEBUG, "MLME: failed to parse Auth(challenge)");
738 if (elems.challenge == NULL) {
739 wpa_printf(MSG_DEBUG, "MLME: no challenge IE in shared key "
743 ieee80211_send_auth(wpa_s, 3, elems.challenge - 2,
744 elems.challenge_len + 2, 1);
748 static void ieee80211_rx_mgmt_auth(struct wpa_supplicant *wpa_s,
749 struct ieee80211_mgmt *mgmt,
751 struct ieee80211_rx_status *rx_status)
753 struct wpa_ssid *ssid = wpa_s->current_ssid;
754 u16 auth_alg, auth_transaction, status_code;
757 adhoc = ssid && ssid->mode == WPAS_MODE_IBSS;
759 if (wpa_s->mlme.state != IEEE80211_AUTHENTICATE && !adhoc) {
760 wpa_printf(MSG_DEBUG, "MLME: authentication frame received "
761 "from " MACSTR ", but not in authenticate state - "
762 "ignored", MAC2STR(mgmt->sa));
767 wpa_printf(MSG_DEBUG, "MLME: too short (%lu) authentication "
768 "frame received from " MACSTR " - ignored",
769 (unsigned long) len, MAC2STR(mgmt->sa));
773 if (!adhoc && os_memcmp(wpa_s->bssid, mgmt->sa, ETH_ALEN) != 0) {
774 wpa_printf(MSG_DEBUG, "MLME: authentication frame received "
775 "from unknown AP (SA=" MACSTR " BSSID=" MACSTR
777 MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid));
781 if (adhoc && os_memcmp(wpa_s->bssid, mgmt->bssid, ETH_ALEN) != 0) {
782 wpa_printf(MSG_DEBUG, "MLME: authentication frame received "
783 "from unknown BSSID (SA=" MACSTR " BSSID=" MACSTR
785 MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid));
789 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
790 auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
791 status_code = le_to_host16(mgmt->u.auth.status_code);
793 wpa_printf(MSG_DEBUG, "MLME: RX authentication from " MACSTR
794 " (alg=%d transaction=%d status=%d)",
795 MAC2STR(mgmt->sa), auth_alg, auth_transaction, status_code);
798 /* IEEE 802.11 standard does not require authentication in IBSS
799 * networks and most implementations do not seem to use it.
800 * However, try to reply to authentication attempts if someone
801 * has actually implemented this.
802 * TODO: Could implement shared key authentication. */
803 if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1) {
804 wpa_printf(MSG_DEBUG, "MLME: unexpected IBSS "
805 "authentication frame (alg=%d "
807 auth_alg, auth_transaction);
810 ieee80211_send_auth(wpa_s, 2, NULL, 0, 0);
813 if (auth_alg != wpa_s->mlme.auth_alg ||
814 auth_transaction != wpa_s->mlme.auth_transaction) {
815 wpa_printf(MSG_DEBUG, "MLME: unexpected authentication frame "
816 "(alg=%d transaction=%d)",
817 auth_alg, auth_transaction);
821 if (status_code != WLAN_STATUS_SUCCESS) {
822 wpa_printf(MSG_DEBUG, "MLME: AP denied authentication "
823 "(auth_alg=%d code=%d)", wpa_s->mlme.auth_alg,
825 if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
826 const int num_algs = 3;
829 algs[0] = algs[1] = algs[2] = 0xff;
830 if (wpa_s->mlme.auth_algs & WPA_AUTH_ALG_OPEN)
831 algs[0] = WLAN_AUTH_OPEN;
832 if (wpa_s->mlme.auth_algs & WPA_AUTH_ALG_SHARED)
833 algs[1] = WLAN_AUTH_SHARED_KEY;
834 if (wpa_s->mlme.auth_algs & WPA_AUTH_ALG_LEAP)
835 algs[2] = WLAN_AUTH_LEAP;
836 if (wpa_s->mlme.auth_alg == WLAN_AUTH_OPEN)
838 else if (wpa_s->mlme.auth_alg == WLAN_AUTH_SHARED_KEY)
842 for (i = 0; i < num_algs; i++) {
846 if (algs[pos] == wpa_s->mlme.auth_alg ||
849 if (algs[pos] == WLAN_AUTH_SHARED_KEY &&
850 !ieee80211_sta_wep_configured(wpa_s))
852 wpa_s->mlme.auth_alg = algs[pos];
853 wpa_printf(MSG_DEBUG, "MLME: set auth_alg=%d "
855 wpa_s->mlme.auth_alg);
862 switch (wpa_s->mlme.auth_alg) {
865 ieee80211_auth_completed(wpa_s);
867 case WLAN_AUTH_SHARED_KEY:
868 if (wpa_s->mlme.auth_transaction == 4)
869 ieee80211_auth_completed(wpa_s);
871 ieee80211_auth_challenge(wpa_s, mgmt, len,
874 #ifdef CONFIG_IEEE80211R
877 union wpa_event_data data;
878 struct wpabuf *ric = NULL;
879 os_memset(&data, 0, sizeof(data));
880 data.ft_ies.ies = mgmt->u.auth.variable;
881 data.ft_ies.ies_len = len -
882 (mgmt->u.auth.variable - (u8 *) mgmt);
883 os_memcpy(data.ft_ies.target_ap, wpa_s->bssid, ETH_ALEN);
884 if (os_strcmp(wpa_s->driver->name, "test") == 0 &&
885 wpa_s->mlme.wmm_enabled) {
886 ric = wpabuf_alloc(200);
888 /* Build simple RIC-Request: RDIE | TSPEC */
890 /* RIC Data (RDIE) */
891 wpabuf_put_u8(ric, WLAN_EID_RIC_DATA);
892 wpabuf_put_u8(ric, 4);
893 wpabuf_put_u8(ric, 0); /* RDIE Identifier */
894 wpabuf_put_u8(ric, 1); /* Resource Descriptor
896 wpabuf_put_le16(ric, 0); /* Status Code */
899 ieee80211_build_tspec(ric);
901 data.ft_ies.ric_ies = wpabuf_head(ric);
902 data.ft_ies.ric_ies_len = wpabuf_len(ric);
906 wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &data);
908 ieee80211_auth_completed(wpa_s);
911 #endif /* CONFIG_IEEE80211R */
916 static void ieee80211_rx_mgmt_deauth(struct wpa_supplicant *wpa_s,
917 struct ieee80211_mgmt *mgmt,
919 struct ieee80211_rx_status *rx_status)
924 wpa_printf(MSG_DEBUG, "MLME: too short (%lu) deauthentication "
925 "frame received from " MACSTR " - ignored",
926 (unsigned long) len, MAC2STR(mgmt->sa));
930 if (os_memcmp(wpa_s->bssid, mgmt->sa, ETH_ALEN) != 0) {
931 wpa_printf(MSG_DEBUG, "MLME: deauthentication frame received "
932 "from unknown AP (SA=" MACSTR " BSSID=" MACSTR
934 MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid));
938 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
940 wpa_printf(MSG_DEBUG, "MLME: RX deauthentication from " MACSTR
941 " (reason=%d)", MAC2STR(mgmt->sa), reason_code);
943 if (wpa_s->mlme.authenticated)
944 wpa_printf(MSG_DEBUG, "MLME: deauthenticated");
946 if (wpa_s->mlme.state == IEEE80211_AUTHENTICATE ||
947 wpa_s->mlme.state == IEEE80211_ASSOCIATE ||
948 wpa_s->mlme.state == IEEE80211_ASSOCIATED) {
949 wpa_s->mlme.state = IEEE80211_AUTHENTICATE;
950 ieee80211_reschedule_timer(wpa_s,
951 IEEE80211_RETRY_AUTH_INTERVAL);
954 ieee80211_set_associated(wpa_s, 0);
955 wpa_s->mlme.authenticated = 0;
959 static void ieee80211_rx_mgmt_disassoc(struct wpa_supplicant *wpa_s,
960 struct ieee80211_mgmt *mgmt,
962 struct ieee80211_rx_status *rx_status)
967 wpa_printf(MSG_DEBUG, "MLME: too short (%lu) disassociation "
968 "frame received from " MACSTR " - ignored",
969 (unsigned long) len, MAC2STR(mgmt->sa));
973 if (os_memcmp(wpa_s->bssid, mgmt->sa, ETH_ALEN) != 0) {
974 wpa_printf(MSG_DEBUG, "MLME: disassociation frame received "
975 "from unknown AP (SA=" MACSTR " BSSID=" MACSTR
977 MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid));
981 reason_code = le_to_host16(mgmt->u.disassoc.reason_code);
983 wpa_printf(MSG_DEBUG, "MLME: RX disassociation from " MACSTR
984 " (reason=%d)", MAC2STR(mgmt->sa), reason_code);
986 if (wpa_s->mlme.associated)
987 wpa_printf(MSG_DEBUG, "MLME: disassociated");
989 if (wpa_s->mlme.state == IEEE80211_ASSOCIATED) {
990 wpa_s->mlme.state = IEEE80211_ASSOCIATE;
991 ieee80211_reschedule_timer(wpa_s,
992 IEEE80211_RETRY_AUTH_INTERVAL);
995 ieee80211_set_associated(wpa_s, 0);
999 static void ieee80211_build_tspec(struct wpabuf *buf)
1001 struct wmm_tspec_element *tspec;
1004 tspec = wpabuf_put(buf, sizeof(*tspec));
1005 tspec->eid = WLAN_EID_VENDOR_SPECIFIC;
1006 tspec->length = sizeof(*tspec) - 2;
1007 tspec->oui[0] = 0x00;
1008 tspec->oui[1] = 0x50;
1009 tspec->oui[2] = 0xf2;
1010 tspec->oui_type = 2;
1011 tspec->oui_subtype = 2;
1016 tspec->ts_info[0] = (tid << 1) |
1017 (WMM_TSPEC_DIRECTION_BI_DIRECTIONAL << 5) |
1019 tspec->ts_info[1] = up << 3;
1020 tspec->nominal_msdu_size = host_to_le16(1530);
1021 tspec->mean_data_rate = host_to_le32(128000); /* bits per second */
1022 tspec->minimum_phy_rate = host_to_le32(6000000);
1023 tspec->surplus_bandwidth_allowance = host_to_le16(0x3000); /* 150% */
1027 static void ieee80211_tx_addts(struct wpa_supplicant *wpa_s)
1030 struct ieee80211_mgmt *mgmt;
1033 wpa_printf(MSG_DEBUG, "MLME: Send ADDTS Request for Voice TSPEC");
1035 alen = mgmt->u.action.u.wmm_action.variable - (u8 *) mgmt;
1037 buf = wpabuf_alloc(alen + sizeof(struct wmm_tspec_element));
1041 mgmt = wpabuf_put(buf, alen);
1042 os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
1043 os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
1044 os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
1045 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1046 WLAN_FC_STYPE_ACTION);
1047 mgmt->u.action.category = WLAN_ACTION_WMM;
1048 mgmt->u.action.u.wmm_action.action_code = WMM_ACTION_CODE_ADDTS_REQ;
1049 mgmt->u.action.u.wmm_action.dialog_token = 1;
1050 mgmt->u.action.u.wmm_action.status_code = 0;
1052 ieee80211_build_tspec(buf);
1054 ieee80211_sta_tx(wpa_s, wpabuf_head(buf), wpabuf_len(buf));
1059 static void ieee80211_rx_mgmt_assoc_resp(struct wpa_supplicant *wpa_s,
1060 struct ieee80211_mgmt *mgmt,
1062 struct ieee80211_rx_status *rx_status,
1067 u16 capab_info, status_code, aid;
1068 struct ieee802_11_elems elems;
1071 /* AssocResp and ReassocResp have identical structure, so process both
1072 * of them in this function. */
1074 if (wpa_s->mlme.state != IEEE80211_ASSOCIATE) {
1075 wpa_printf(MSG_DEBUG, "MLME: association frame received from "
1076 MACSTR ", but not in associate state - ignored",
1082 wpa_printf(MSG_DEBUG, "MLME: too short (%lu) association "
1083 "frame received from " MACSTR " - ignored",
1084 (unsigned long) len, MAC2STR(mgmt->sa));
1088 if (os_memcmp(wpa_s->bssid, mgmt->sa, ETH_ALEN) != 0) {
1089 wpa_printf(MSG_DEBUG, "MLME: association frame received from "
1090 "unknown AP (SA=" MACSTR " BSSID=" MACSTR ") - "
1091 "ignored", MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid));
1095 capab_info = le_to_host16(mgmt->u.assoc_resp.capab_info);
1096 status_code = le_to_host16(mgmt->u.assoc_resp.status_code);
1097 aid = le_to_host16(mgmt->u.assoc_resp.aid);
1098 if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
1099 wpa_printf(MSG_DEBUG, "MLME: invalid aid value %d; bits 15:14 "
1101 aid &= ~(BIT(15) | BIT(14));
1103 wpa_printf(MSG_DEBUG, "MLME: RX %sssocResp from " MACSTR
1104 " (capab=0x%x status=%d aid=%d)",
1105 reassoc ? "Rea" : "A", MAC2STR(mgmt->sa),
1106 capab_info, status_code, aid);
1108 pos = mgmt->u.assoc_resp.variable;
1109 if (ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems, 0)
1111 wpa_printf(MSG_DEBUG, "MLME: failed to parse AssocResp");
1115 if (status_code != WLAN_STATUS_SUCCESS) {
1116 wpa_printf(MSG_DEBUG, "MLME: AP denied association (code=%d)",
1118 #ifdef CONFIG_IEEE80211W
1119 if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY &&
1120 elems.timeout_int && elems.timeout_int_len == 5 &&
1121 elems.timeout_int[0] == WLAN_TIMEOUT_ASSOC_COMEBACK) {
1123 tu = WPA_GET_LE32(elems.timeout_int + 1);
1124 ms = tu * 1024 / 1000;
1125 wpa_printf(MSG_DEBUG, "MLME: AP rejected association "
1126 "temporarily; comeback duration %u TU "
1128 if (ms > IEEE80211_ASSOC_TIMEOUT) {
1129 wpa_printf(MSG_DEBUG, "MLME: Update timer "
1130 "based on comeback duration");
1131 ieee80211_reschedule_timer(wpa_s, ms);
1134 #endif /* CONFIG_IEEE80211W */
1138 if (elems.supp_rates == NULL) {
1139 wpa_printf(MSG_DEBUG, "MLME: no SuppRates element in "
1144 if (wpa_s->mlme.auth_alg == WLAN_AUTH_FT) {
1146 wpa_printf(MSG_DEBUG, "MLME: AP tried to use "
1147 "association, not reassociation, response "
1151 if (wpa_ft_validate_reassoc_resp(
1152 wpa_s->wpa, pos, len - (pos - (u8 *) mgmt),
1154 wpa_printf(MSG_DEBUG, "MLME: FT validation of Reassoc"
1158 } else if (wpa_sm_set_ft_params(wpa_s->wpa, pos,
1159 len - (pos - (u8 *) mgmt)) < 0)
1162 wpa_printf(MSG_DEBUG, "MLME: associated");
1163 wpa_s->mlme.aid = aid;
1164 wpa_s->mlme.ap_capab = capab_info;
1166 os_free(wpa_s->mlme.assocresp_ies);
1167 wpa_s->mlme.assocresp_ies_len = len - (pos - (u8 *) mgmt);
1168 wpa_s->mlme.assocresp_ies = os_malloc(wpa_s->mlme.assocresp_ies_len);
1169 if (wpa_s->mlme.assocresp_ies) {
1170 os_memcpy(wpa_s->mlme.assocresp_ies, pos,
1171 wpa_s->mlme.assocresp_ies_len);
1174 ieee80211_set_associated(wpa_s, 1);
1176 rates_len = elems.supp_rates_len;
1177 if (rates_len > sizeof(rates))
1178 rates_len = sizeof(rates);
1179 os_memcpy(rates, elems.supp_rates, rates_len);
1180 if (elems.ext_supp_rates) {
1181 size_t _len = elems.ext_supp_rates_len;
1182 if (_len > sizeof(rates) - rates_len)
1183 _len = sizeof(rates) - rates_len;
1184 os_memcpy(rates + rates_len, elems.ext_supp_rates, _len);
1188 if (wpa_drv_set_bssid(wpa_s, wpa_s->bssid) < 0) {
1189 wpa_printf(MSG_DEBUG, "MLME: failed to set BSSID for the "
1192 if (wpa_drv_set_ssid(wpa_s, wpa_s->mlme.ssid, wpa_s->mlme.ssid_len) <
1194 wpa_printf(MSG_DEBUG, "MLME: failed to set SSID for the "
1198 /* Remove STA entry before adding a new one just in case to avoid
1199 * problems with existing configuration (e.g., keys). */
1200 wpa_drv_mlme_remove_sta(wpa_s, wpa_s->bssid);
1201 if (wpa_drv_mlme_add_sta(wpa_s, wpa_s->bssid, rates, rates_len) < 0) {
1202 wpa_printf(MSG_DEBUG, "MLME: failed to add STA entry to the "
1206 if (elems.wmm && wpa_s->mlme.wmm_enabled)
1207 ieee80211_sta_wmm_params(wpa_s, elems.wmm, elems.wmm_len);
1209 ieee80211_associated(wpa_s);
1211 if (wpa_s->mlme.auth_alg != WLAN_AUTH_FT &&
1212 os_strcmp(wpa_s->driver->name, "test") == 0 &&
1213 elems.wmm && wpa_s->mlme.wmm_enabled) {
1214 /* Test WMM-AC - send ADDTS for WMM TSPEC */
1215 ieee80211_tx_addts(wpa_s);
1220 /* Caller must hold local->sta_bss_lock */
1221 static void __ieee80211_bss_hash_add(struct wpa_supplicant *wpa_s,
1222 struct ieee80211_sta_bss *bss)
1224 bss->hnext = wpa_s->mlme.sta_bss_hash[STA_HASH(bss->bssid)];
1225 wpa_s->mlme.sta_bss_hash[STA_HASH(bss->bssid)] = bss;
1229 /* Caller must hold local->sta_bss_lock */
1230 static void __ieee80211_bss_hash_del(struct wpa_supplicant *wpa_s,
1231 struct ieee80211_sta_bss *bss)
1233 struct ieee80211_sta_bss *b, *prev = NULL;
1234 b = wpa_s->mlme.sta_bss_hash[STA_HASH(bss->bssid)];
1238 wpa_s->mlme.sta_bss_hash[STA_HASH(bss->bssid)]
1241 prev->hnext = bss->hnext;
1251 static struct ieee80211_sta_bss *
1252 ieee80211_bss_add(struct wpa_supplicant *wpa_s, const u8 *bssid)
1254 struct ieee80211_sta_bss *bss;
1256 bss = os_zalloc(sizeof(*bss));
1259 os_memcpy(bss->bssid, bssid, ETH_ALEN);
1261 /* TODO: order by RSSI? */
1262 bss->next = wpa_s->mlme.sta_bss_list;
1263 wpa_s->mlme.sta_bss_list = bss;
1264 __ieee80211_bss_hash_add(wpa_s, bss);
1269 static struct ieee80211_sta_bss *
1270 ieee80211_bss_get(struct wpa_supplicant *wpa_s, const u8 *bssid)
1272 struct ieee80211_sta_bss *bss;
1274 bss = wpa_s->mlme.sta_bss_hash[STA_HASH(bssid)];
1276 if (os_memcmp(bss->bssid, bssid, ETH_ALEN) == 0)
1284 static void ieee80211_bss_free(struct wpa_supplicant *wpa_s,
1285 struct ieee80211_sta_bss *bss)
1287 __ieee80211_bss_hash_del(wpa_s, bss);
1289 os_free(bss->wpa_ie);
1290 os_free(bss->rsn_ie);
1291 os_free(bss->wmm_ie);
1297 static void ieee80211_bss_list_deinit(struct wpa_supplicant *wpa_s)
1299 struct ieee80211_sta_bss *bss, *prev;
1301 bss = wpa_s->mlme.sta_bss_list;
1302 wpa_s->mlme.sta_bss_list = NULL;
1306 ieee80211_bss_free(wpa_s, prev);
1311 static void ieee80211_bss_info(struct wpa_supplicant *wpa_s,
1312 struct ieee80211_mgmt *mgmt,
1314 struct ieee80211_rx_status *rx_status,
1317 struct ieee802_11_elems elems;
1319 int channel, invalid = 0, clen;
1320 struct ieee80211_sta_bss *bss;
1325 if (!beacon && os_memcmp(mgmt->da, wpa_s->own_addr, ETH_ALEN))
1326 return; /* ignore ProbeResp to foreign address */
1329 wpa_printf(MSG_MSGDUMP, "MLME: RX %s from " MACSTR " to " MACSTR,
1330 beacon ? "Beacon" : "Probe Response",
1331 MAC2STR(mgmt->sa), MAC2STR(mgmt->da));
1334 baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
1338 pos = mgmt->u.beacon.timestamp;
1339 timestamp = WPA_GET_LE64(pos);
1342 if (local->conf.mode == IW_MODE_ADHOC && beacon &&
1343 os_memcmp(mgmt->bssid, local->bssid, ETH_ALEN) == 0) {
1344 #ifdef IEEE80211_IBSS_DEBUG
1345 static unsigned long last_tsf_debug = 0;
1347 if (local->hw->get_tsf)
1348 tsf = local->hw->get_tsf(local->mdev);
1351 if (time_after(jiffies, last_tsf_debug + 5 * HZ)) {
1352 wpa_printf(MSG_DEBUG, "RX beacon SA=" MACSTR " BSSID="
1353 MACSTR " TSF=0x%llx BCN=0x%llx diff=%lld "
1355 MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid),
1356 tsf, timestamp, tsf - timestamp, jiffies);
1357 last_tsf_debug = jiffies;
1359 #endif /* IEEE80211_IBSS_DEBUG */
1363 ie_pos = mgmt->u.beacon.variable;
1364 ie_len = len - baselen;
1365 if (ieee802_11_parse_elems(ie_pos, ie_len, &elems, 0) == ParseFailed)
1369 if (local->conf.mode == IW_MODE_ADHOC && elems.supp_rates &&
1370 os_memcmp(mgmt->bssid, local->bssid, ETH_ALEN) == 0 &&
1371 (sta = sta_info_get(local, mgmt->sa))) {
1372 struct ieee80211_rate *rates;
1374 u32 supp_rates, prev_rates;
1375 int i, j, oper_mode;
1377 rates = local->curr_rates;
1378 num_rates = local->num_curr_rates;
1379 oper_mode = wpa_s->mlme.sta_scanning ?
1380 local->scan_oper_phymode : local->conf.phymode;
1381 for (i = 0; i < local->hw->num_modes; i++) {
1382 struct ieee80211_hw_modes *mode = &local->hw->modes[i];
1383 if (oper_mode == mode->mode) {
1384 rates = mode->rates;
1385 num_rates = mode->num_rates;
1391 for (i = 0; i < elems.supp_rates_len +
1392 elems.ext_supp_rates_len; i++) {
1395 if (i < elems.supp_rates_len)
1396 rate = elems.supp_rates[i];
1397 else if (elems.ext_supp_rates)
1398 rate = elems.ext_supp_rates
1399 [i - elems.supp_rates_len];
1400 own_rate = 5 * (rate & 0x7f);
1401 if (oper_mode == MODE_ATHEROS_TURBO)
1403 for (j = 0; j < num_rates; j++)
1404 if (rates[j].rate == own_rate)
1405 supp_rates |= BIT(j);
1408 prev_rates = sta->supp_rates;
1409 sta->supp_rates &= supp_rates;
1410 if (sta->supp_rates == 0) {
1411 /* No matching rates - this should not really happen.
1412 * Make sure that at least one rate is marked
1413 * supported to avoid issues with TX rate ctrl. */
1414 sta->supp_rates = wpa_s->mlme.supp_rates_bits;
1416 if (sta->supp_rates != prev_rates) {
1417 wpa_printf(MSG_DEBUG, "MLME: updated supp_rates set "
1418 "for " MACSTR " based on beacon info "
1419 "(0x%x & 0x%x -> 0x%x)",
1420 MAC2STR(sta->addr), prev_rates,
1421 supp_rates, sta->supp_rates);
1423 sta_info_release(local, sta);
1427 if (elems.ssid == NULL)
1430 if (elems.ds_params && elems.ds_params_len == 1)
1431 channel = elems.ds_params[0];
1433 channel = rx_status->channel;
1435 bss = ieee80211_bss_get(wpa_s, mgmt->bssid);
1437 bss = ieee80211_bss_add(wpa_s, mgmt->bssid);
1442 /* TODO: order by RSSI? */
1443 spin_lock_bh(&local->sta_bss_lock);
1444 list_move_tail(&bss->list, &local->sta_bss_list);
1445 spin_unlock_bh(&local->sta_bss_lock);
1449 if (bss->probe_resp && beacon) {
1450 /* Do not allow beacon to override data from Probe Response. */
1454 bss->beacon_int = le_to_host16(mgmt->u.beacon.beacon_int);
1455 bss->capability = le_to_host16(mgmt->u.beacon.capab_info);
1457 if (bss->ie == NULL || bss->ie_len < ie_len) {
1459 bss->ie = os_malloc(ie_len);
1462 os_memcpy(bss->ie, ie_pos, ie_len);
1463 bss->ie_len = ie_len;
1466 if (elems.ssid && elems.ssid_len <= MAX_SSID_LEN) {
1467 os_memcpy(bss->ssid, elems.ssid, elems.ssid_len);
1468 bss->ssid_len = elems.ssid_len;
1471 bss->supp_rates_len = 0;
1472 if (elems.supp_rates) {
1473 clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
1474 if (clen > elems.supp_rates_len)
1475 clen = elems.supp_rates_len;
1476 os_memcpy(&bss->supp_rates[bss->supp_rates_len],
1477 elems.supp_rates, clen);
1478 bss->supp_rates_len += clen;
1480 if (elems.ext_supp_rates) {
1481 clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
1482 if (clen > elems.ext_supp_rates_len)
1483 clen = elems.ext_supp_rates_len;
1484 os_memcpy(&bss->supp_rates[bss->supp_rates_len],
1485 elems.ext_supp_rates, clen);
1486 bss->supp_rates_len += clen;
1490 (bss->wpa_ie == NULL || bss->wpa_ie_len != elems.wpa_ie_len ||
1491 os_memcmp(bss->wpa_ie, elems.wpa_ie, elems.wpa_ie_len))) {
1492 os_free(bss->wpa_ie);
1493 bss->wpa_ie = os_malloc(elems.wpa_ie_len + 2);
1495 os_memcpy(bss->wpa_ie, elems.wpa_ie - 2,
1496 elems.wpa_ie_len + 2);
1497 bss->wpa_ie_len = elems.wpa_ie_len + 2;
1499 bss->wpa_ie_len = 0;
1500 } else if (!elems.wpa_ie && bss->wpa_ie) {
1501 os_free(bss->wpa_ie);
1503 bss->wpa_ie_len = 0;
1507 (bss->rsn_ie == NULL || bss->rsn_ie_len != elems.rsn_ie_len ||
1508 os_memcmp(bss->rsn_ie, elems.rsn_ie, elems.rsn_ie_len))) {
1509 os_free(bss->rsn_ie);
1510 bss->rsn_ie = os_malloc(elems.rsn_ie_len + 2);
1512 os_memcpy(bss->rsn_ie, elems.rsn_ie - 2,
1513 elems.rsn_ie_len + 2);
1514 bss->rsn_ie_len = elems.rsn_ie_len + 2;
1516 bss->rsn_ie_len = 0;
1517 } else if (!elems.rsn_ie && bss->rsn_ie) {
1518 os_free(bss->rsn_ie);
1520 bss->rsn_ie_len = 0;
1524 (bss->wmm_ie == NULL || bss->wmm_ie_len != elems.wmm_len ||
1525 os_memcmp(bss->wmm_ie, elems.wmm, elems.wmm_len))) {
1526 os_free(bss->wmm_ie);
1527 bss->wmm_ie = os_malloc(elems.wmm_len + 2);
1529 os_memcpy(bss->wmm_ie, elems.wmm - 2,
1531 bss->wmm_ie_len = elems.wmm_len + 2;
1533 bss->wmm_ie_len = 0;
1534 } else if (!elems.wmm && bss->wmm_ie) {
1535 os_free(bss->wmm_ie);
1537 bss->wmm_ie_len = 0;
1540 #ifdef CONFIG_IEEE80211R
1542 (bss->mdie == NULL || bss->mdie_len != elems.mdie_len ||
1543 os_memcmp(bss->mdie, elems.mdie, elems.mdie_len))) {
1545 bss->mdie = os_malloc(elems.mdie_len + 2);
1547 os_memcpy(bss->mdie, elems.mdie - 2,
1548 elems.mdie_len + 2);
1549 bss->mdie_len = elems.mdie_len + 2;
1552 } else if (!elems.mdie && bss->mdie) {
1557 #endif /* CONFIG_IEEE80211R */
1559 bss->hw_mode = wpa_s->mlme.phymode;
1560 bss->channel = channel;
1561 bss->freq = wpa_s->mlme.freq;
1562 if (channel != wpa_s->mlme.channel &&
1563 (wpa_s->mlme.phymode == HOSTAPD_MODE_IEEE80211G ||
1564 wpa_s->mlme.phymode == HOSTAPD_MODE_IEEE80211B) &&
1565 channel >= 1 && channel <= 14) {
1566 static const int freq_list[] = {
1567 2412, 2417, 2422, 2427, 2432, 2437, 2442,
1568 2447, 2452, 2457, 2462, 2467, 2472, 2484
1570 /* IEEE 802.11g/b mode can receive packets from neighboring
1571 * channels, so map the channel into frequency. */
1572 bss->freq = freq_list[channel - 1];
1574 bss->timestamp = timestamp;
1575 os_get_time(&bss->last_update);
1576 bss->rssi = rx_status->ssi;
1582 static void ieee80211_rx_mgmt_probe_resp(struct wpa_supplicant *wpa_s,
1583 struct ieee80211_mgmt *mgmt,
1585 struct ieee80211_rx_status *rx_status)
1587 ieee80211_bss_info(wpa_s, mgmt, len, rx_status, 0);
1591 static void ieee80211_rx_mgmt_beacon(struct wpa_supplicant *wpa_s,
1592 struct ieee80211_mgmt *mgmt,
1594 struct ieee80211_rx_status *rx_status)
1598 struct ieee802_11_elems elems;
1600 ieee80211_bss_info(wpa_s, mgmt, len, rx_status, 1);
1602 if (!wpa_s->mlme.associated ||
1603 os_memcmp(wpa_s->bssid, mgmt->bssid, ETH_ALEN) != 0)
1606 /* Process beacon from the current BSS */
1607 baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
1611 if (ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen,
1612 &elems, 0) == ParseFailed)
1616 if (elems.erp_info && elems.erp_info_len >= 1) {
1618 (elems.erp_info[0] & ERP_INFO_USE_PROTECTION) != 0;
1621 if (use_protection != !!wpa_s->mlme.use_protection) {
1622 wpa_printf(MSG_DEBUG, "MLME: CTS protection %s (BSSID=" MACSTR
1624 use_protection ? "enabled" : "disabled",
1625 MAC2STR(wpa_s->bssid));
1626 wpa_s->mlme.use_protection = use_protection ? 1 : 0;
1627 wpa_s->mlme.cts_protect_erp_frames = use_protection;
1630 if (elems.wmm && wpa_s->mlme.wmm_enabled) {
1631 ieee80211_sta_wmm_params(wpa_s, elems.wmm,
1637 static void ieee80211_rx_mgmt_probe_req(struct wpa_supplicant *wpa_s,
1638 struct ieee80211_mgmt *mgmt,
1640 struct ieee80211_rx_status *rx_status)
1642 int tx_last_beacon, adhoc;
1644 struct ieee80211_mgmt *resp;
1647 struct wpa_ssid *ssid = wpa_s->current_ssid;
1649 adhoc = ssid && ssid->mode == WPAS_MODE_IBSS;
1651 if (!adhoc || wpa_s->mlme.state != IEEE80211_IBSS_JOINED ||
1652 len < 24 + 2 || wpa_s->mlme.probe_resp == NULL)
1656 if (local->hw->tx_last_beacon)
1657 tx_last_beacon = local->hw->tx_last_beacon(local->mdev);
1662 #ifdef IEEE80211_IBSS_DEBUG
1663 wpa_printf(MSG_DEBUG, "MLME: RX ProbeReq SA=" MACSTR " DA=" MACSTR
1664 " BSSID=" MACSTR " (tx_last_beacon=%d)",
1665 MAC2STR(mgmt->sa), MAC2STR(mgmt->da),
1666 MAC2STR(mgmt->bssid), tx_last_beacon);
1667 #endif /* IEEE80211_IBSS_DEBUG */
1669 if (!tx_last_beacon)
1672 if (os_memcmp(mgmt->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
1673 os_memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
1676 end = ((u8 *) mgmt) + len;
1677 pos = mgmt->u.probe_req.variable;
1678 if (pos[0] != WLAN_EID_SSID ||
1679 pos + 2 + pos[1] > end) {
1680 wpa_printf(MSG_DEBUG, "MLME: Invalid SSID IE in ProbeReq from "
1681 MACSTR, MAC2STR(mgmt->sa));
1685 (pos[1] != wpa_s->mlme.ssid_len ||
1686 os_memcmp(pos + 2, wpa_s->mlme.ssid, wpa_s->mlme.ssid_len) != 0))
1688 /* Ignore ProbeReq for foreign SSID */
1693 /* Reply with ProbeResp */
1694 skb = skb_copy(wpa_s->mlme.probe_resp, GFP_ATOMIC);
1698 resp = (struct ieee80211_mgmt *) skb->data;
1699 os_memcpy(resp->da, mgmt->sa, ETH_ALEN);
1700 #ifdef IEEE80211_IBSS_DEBUG
1701 wpa_printf(MSG_DEBUG, "MLME: Sending ProbeResp to " MACSTR,
1703 #endif /* IEEE80211_IBSS_DEBUG */
1704 ieee80211_sta_tx(wpa_s, skb, 0, 1);
1709 #ifdef CONFIG_IEEE80211R
1710 static void ieee80211_rx_mgmt_ft_action(struct wpa_supplicant *wpa_s,
1711 struct ieee80211_mgmt *mgmt,
1713 struct ieee80211_rx_status *rx_status)
1715 union wpa_event_data data;
1717 u8 *sta_addr, *target_ap_addr;
1719 if (len < 24 + 1 + sizeof(mgmt->u.action.u.ft_action_resp)) {
1720 wpa_printf(MSG_DEBUG, "MLME: Too short FT Action frame");
1725 * Only FT Action Response is needed for now since reservation
1726 * protocol is not supported.
1728 if (mgmt->u.action.u.ft_action_resp.action != 2) {
1729 wpa_printf(MSG_DEBUG, "MLME: Unexpected FT Action %d",
1730 mgmt->u.action.u.ft_action_resp.action);
1734 status = le_to_host16(mgmt->u.action.u.ft_action_resp.status_code);
1735 sta_addr = mgmt->u.action.u.ft_action_resp.sta_addr;
1736 target_ap_addr = mgmt->u.action.u.ft_action_resp.target_ap_addr;
1737 wpa_printf(MSG_DEBUG, "MLME: Received FT Action Response: STA " MACSTR
1738 " TargetAP " MACSTR " Status Code %d",
1739 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
1740 if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
1741 wpa_printf(MSG_DEBUG, "MLME: Foreign STA Address " MACSTR
1742 " in FT Action Response", MAC2STR(sta_addr));
1747 wpa_printf(MSG_DEBUG, "MLME: FT Action Response indicates "
1748 "failure (status code %d)", status);
1749 /* TODO: report error to FT code(?) */
1753 os_memset(&data, 0, sizeof(data));
1754 data.ft_ies.ies = mgmt->u.action.u.ft_action_resp.variable;
1755 data.ft_ies.ies_len = len - (mgmt->u.action.u.ft_action_resp.variable -
1757 data.ft_ies.ft_action = 1;
1758 os_memcpy(data.ft_ies.target_ap, target_ap_addr, ETH_ALEN);
1759 wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &data);
1760 /* TODO: should only re-associate, if EVENT_FT_RESPONSE was processed
1762 wpa_s->mlme.prev_bssid_set = 1;
1763 wpa_s->mlme.auth_alg = WLAN_AUTH_FT;
1764 os_memcpy(wpa_s->mlme.prev_bssid, wpa_s->bssid, ETH_ALEN);
1765 os_memcpy(wpa_s->bssid, target_ap_addr, ETH_ALEN);
1766 ieee80211_associate(wpa_s);
1768 #endif /* CONFIG_IEEE80211R */
1771 #ifdef CONFIG_IEEE80211W
1773 /* MLME-SAQuery.response */
1774 static int ieee80211_sta_send_sa_query_resp(struct wpa_supplicant *wpa_s,
1775 const u8 *addr, const u8 *trans_id)
1777 struct ieee80211_mgmt *mgmt;
1781 mgmt = os_zalloc(sizeof(*mgmt));
1783 wpa_printf(MSG_DEBUG, "MLME: Failed to allocate buffer for "
1784 "SA Query action frame");
1789 os_memcpy(mgmt->da, addr, ETH_ALEN);
1790 os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
1791 os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
1792 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1793 WLAN_FC_STYPE_ACTION);
1794 mgmt->u.action.category = WLAN_ACTION_SA_QUERY;
1795 mgmt->u.action.u.sa_query_resp.action = WLAN_SA_QUERY_RESPONSE;
1796 os_memcpy(mgmt->u.action.u.sa_query_resp.trans_id, trans_id,
1797 WLAN_SA_QUERY_TR_ID_LEN);
1798 len += 1 + sizeof(mgmt->u.action.u.sa_query_resp);
1800 res = ieee80211_sta_tx(wpa_s, (u8 *) mgmt, len);
1807 static void ieee80211_rx_mgmt_sa_query_action(
1808 struct wpa_supplicant *wpa_s, struct ieee80211_mgmt *mgmt, size_t len,
1809 struct ieee80211_rx_status *rx_status)
1811 if (len < 24 + 1 + sizeof(mgmt->u.action.u.sa_query_req)) {
1812 wpa_printf(MSG_DEBUG, "MLME: Too short SA Query Action frame");
1816 if (mgmt->u.action.u.sa_query_req.action != WLAN_SA_QUERY_REQUEST) {
1817 wpa_printf(MSG_DEBUG, "MLME: Unexpected SA Query Action %d",
1818 mgmt->u.action.u.sa_query_req.action);
1822 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) != 0) {
1823 wpa_printf(MSG_DEBUG, "MLME: Ignore SA Query from unknown "
1824 "source " MACSTR, MAC2STR(mgmt->sa));
1828 if (wpa_s->mlme.state == IEEE80211_ASSOCIATE) {
1829 wpa_printf(MSG_DEBUG, "MLME: Ignore SA query request during "
1830 "association process");
1834 wpa_printf(MSG_DEBUG, "MLME: Replying to SA Query request");
1835 ieee80211_sta_send_sa_query_resp(wpa_s, mgmt->sa, mgmt->u.action.u.
1836 sa_query_req.trans_id);
1839 #endif /* CONFIG_IEEE80211W */
1842 static void dump_tspec(struct wmm_tspec_element *tspec)
1844 int up, psb, dir, tid;
1847 up = (tspec->ts_info[1] >> 3) & 0x07;
1848 psb = (tspec->ts_info[1] >> 2) & 0x01;
1849 dir = (tspec->ts_info[0] >> 5) & 0x03;
1850 tid = (tspec->ts_info[0] >> 1) & 0x0f;
1851 wpa_printf(MSG_DEBUG, "WMM: TS Info: UP=%d PSB=%d Direction=%d TID=%d",
1853 val = le_to_host16(tspec->nominal_msdu_size);
1854 wpa_printf(MSG_DEBUG, "WMM: Nominal MSDU Size: %d%s",
1855 val & 0x7fff, val & 0x8000 ? " (fixed)" : "");
1856 wpa_printf(MSG_DEBUG, "WMM: Mean Data Rate: %u bps",
1857 le_to_host32(tspec->mean_data_rate));
1858 wpa_printf(MSG_DEBUG, "WMM: Minimum PHY Rate: %u bps",
1859 le_to_host32(tspec->minimum_phy_rate));
1860 val = le_to_host16(tspec->surplus_bandwidth_allowance);
1861 wpa_printf(MSG_DEBUG, "WMM: Surplus Bandwidth Allowance: %u.%04u",
1862 val >> 13, 10000 * (val & 0x1fff) / 0x2000);
1863 val = le_to_host16(tspec->medium_time);
1864 wpa_printf(MSG_DEBUG, "WMM: Medium Time: %u (= %u usec/sec)",
1869 static int is_wmm_tspec(const u8 *ie, size_t len)
1871 const struct wmm_tspec_element *tspec;
1873 if (len < sizeof(*tspec))
1876 tspec = (const struct wmm_tspec_element *) ie;
1877 if (tspec->eid != WLAN_EID_VENDOR_SPECIFIC ||
1878 tspec->length < sizeof(*tspec) - 2 ||
1879 tspec->oui[0] != 0x00 || tspec->oui[1] != 0x50 ||
1880 tspec->oui[2] != 0xf2 || tspec->oui_type != 2 ||
1881 tspec->oui_subtype != 2 || tspec->version != 1)
1888 static void ieee80211_rx_addts_resp(
1889 struct wpa_supplicant *wpa_s, struct ieee80211_mgmt *mgmt, size_t len,
1892 struct wmm_tspec_element *tspec;
1894 wpa_printf(MSG_DEBUG, "WMM: Received ADDTS Response");
1895 wpa_hexdump(MSG_MSGDUMP, "WMM: ADDTS Response IE(s)",
1896 mgmt->u.action.u.wmm_action.variable, var_len);
1897 if (!is_wmm_tspec(mgmt->u.action.u.wmm_action.variable, var_len))
1899 tspec = (struct wmm_tspec_element *)
1900 mgmt->u.action.u.wmm_action.variable;
1905 static void ieee80211_rx_delts(
1906 struct wpa_supplicant *wpa_s, struct ieee80211_mgmt *mgmt, size_t len,
1909 struct wmm_tspec_element *tspec;
1911 wpa_printf(MSG_DEBUG, "WMM: Received DELTS");
1912 wpa_hexdump(MSG_MSGDUMP, "WMM: DELTS IE(s)",
1913 mgmt->u.action.u.wmm_action.variable, var_len);
1914 if (!is_wmm_tspec(mgmt->u.action.u.wmm_action.variable, var_len))
1916 tspec = (struct wmm_tspec_element *)
1917 mgmt->u.action.u.wmm_action.variable;
1922 static void ieee80211_rx_mgmt_wmm_action(
1923 struct wpa_supplicant *wpa_s, struct ieee80211_mgmt *mgmt, size_t len,
1924 struct ieee80211_rx_status *rx_status)
1928 alen = mgmt->u.action.u.wmm_action.variable - (u8 *) mgmt;
1930 wpa_printf(MSG_DEBUG, "WMM: Received Action frame too short");
1934 wpa_printf(MSG_DEBUG, "WMM: Received Action frame: Action Code %d, "
1935 "Dialog Token %d, Status Code %d",
1936 mgmt->u.action.u.wmm_action.action_code,
1937 mgmt->u.action.u.wmm_action.dialog_token,
1938 mgmt->u.action.u.wmm_action.status_code);
1940 switch (mgmt->u.action.u.wmm_action.action_code) {
1941 case WMM_ACTION_CODE_ADDTS_RESP:
1942 ieee80211_rx_addts_resp(wpa_s, mgmt, len, len - alen);
1944 case WMM_ACTION_CODE_DELTS:
1945 ieee80211_rx_delts(wpa_s, mgmt, len, len - alen);
1948 wpa_printf(MSG_DEBUG, "WMM: Unsupported Action Code %d",
1949 mgmt->u.action.u.wmm_action.action_code);
1955 static void ieee80211_rx_mgmt_action(struct wpa_supplicant *wpa_s,
1956 struct ieee80211_mgmt *mgmt,
1958 struct ieee80211_rx_status *rx_status)
1960 wpa_printf(MSG_DEBUG, "MLME: received Action frame");
1965 switch (mgmt->u.action.category) {
1966 #ifdef CONFIG_IEEE80211R
1967 case WLAN_ACTION_FT:
1968 ieee80211_rx_mgmt_ft_action(wpa_s, mgmt, len, rx_status);
1970 #endif /* CONFIG_IEEE80211R */
1971 #ifdef CONFIG_IEEE80211W
1972 case WLAN_ACTION_SA_QUERY:
1973 ieee80211_rx_mgmt_sa_query_action(wpa_s, mgmt, len, rx_status);
1975 #endif /* CONFIG_IEEE80211W */
1976 case WLAN_ACTION_WMM:
1977 ieee80211_rx_mgmt_wmm_action(wpa_s, mgmt, len, rx_status);
1980 wpa_printf(MSG_DEBUG, "MLME: unknown Action Category %d",
1981 mgmt->u.action.category);
1987 static void ieee80211_sta_rx_mgmt(struct wpa_supplicant *wpa_s,
1988 const u8 *buf, size_t len,
1989 struct ieee80211_rx_status *rx_status)
1991 struct ieee80211_mgmt *mgmt;
1997 mgmt = (struct ieee80211_mgmt *) buf;
1998 fc = le_to_host16(mgmt->frame_control);
2000 switch (WLAN_FC_GET_STYPE(fc)) {
2001 case WLAN_FC_STYPE_PROBE_REQ:
2002 ieee80211_rx_mgmt_probe_req(wpa_s, mgmt, len, rx_status);
2004 case WLAN_FC_STYPE_PROBE_RESP:
2005 ieee80211_rx_mgmt_probe_resp(wpa_s, mgmt, len, rx_status);
2007 case WLAN_FC_STYPE_BEACON:
2008 ieee80211_rx_mgmt_beacon(wpa_s, mgmt, len, rx_status);
2010 case WLAN_FC_STYPE_AUTH:
2011 ieee80211_rx_mgmt_auth(wpa_s, mgmt, len, rx_status);
2013 case WLAN_FC_STYPE_ASSOC_RESP:
2014 ieee80211_rx_mgmt_assoc_resp(wpa_s, mgmt, len, rx_status, 0);
2016 case WLAN_FC_STYPE_REASSOC_RESP:
2017 ieee80211_rx_mgmt_assoc_resp(wpa_s, mgmt, len, rx_status, 1);
2019 case WLAN_FC_STYPE_DEAUTH:
2020 ieee80211_rx_mgmt_deauth(wpa_s, mgmt, len, rx_status);
2022 case WLAN_FC_STYPE_DISASSOC:
2023 ieee80211_rx_mgmt_disassoc(wpa_s, mgmt, len, rx_status);
2025 case WLAN_FC_STYPE_ACTION:
2026 ieee80211_rx_mgmt_action(wpa_s, mgmt, len, rx_status);
2029 wpa_printf(MSG_DEBUG, "MLME: received unknown management "
2030 "frame - stype=%d", WLAN_FC_GET_STYPE(fc));
2036 static void ieee80211_sta_rx_scan(struct wpa_supplicant *wpa_s,
2037 const u8 *buf, size_t len,
2038 struct ieee80211_rx_status *rx_status)
2040 struct ieee80211_mgmt *mgmt;
2046 mgmt = (struct ieee80211_mgmt *) buf;
2047 fc = le_to_host16(mgmt->frame_control);
2049 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT) {
2050 if (WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_PROBE_RESP) {
2051 ieee80211_rx_mgmt_probe_resp(wpa_s, mgmt,
2053 } else if (WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON) {
2054 ieee80211_rx_mgmt_beacon(wpa_s, mgmt, len, rx_status);
2060 static int ieee80211_sta_active_ibss(struct wpa_supplicant *wpa_s)
2065 list_for_each(ptr, &local->sta_list) {
2066 sta = list_entry(ptr, struct sta_info, list);
2067 if (sta->dev == dev &&
2068 time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL,
2080 static void ieee80211_sta_expire(struct wpa_supplicant *wpa_s)
2083 list_for_each_safe(ptr, n, &local->sta_list) {
2084 sta = list_entry(ptr, struct sta_info, list);
2085 if (time_after(jiffies, sta->last_rx +
2086 IEEE80211_IBSS_INACTIVITY_LIMIT)) {
2087 wpa_printf(MSG_DEBUG, "MLME: expiring inactive STA "
2088 MACSTR, MAC2STR(sta->addr));
2089 sta_info_free(local, sta, 1);
2096 static void ieee80211_sta_merge_ibss(struct wpa_supplicant *wpa_s)
2098 struct wpa_driver_scan_params params;
2100 ieee80211_reschedule_timer(wpa_s, IEEE80211_IBSS_MERGE_INTERVAL);
2102 ieee80211_sta_expire(wpa_s);
2103 if (ieee80211_sta_active_ibss(wpa_s))
2106 wpa_printf(MSG_DEBUG, "MLME: No active IBSS STAs - trying to scan for "
2107 "other IBSS networks with same SSID (merge)");
2108 os_memset(¶ms, 0, sizeof(params));
2109 params.ssids[0].ssid = wpa_s->mlme.ssid;
2110 params.ssids[0].ssid_len = wpa_s->mlme.ssid_len;
2111 params.num_ssids = wpa_s->mlme.ssid_len ? 1 : 0;
2112 ieee80211_sta_req_scan(wpa_s, ¶ms);
2116 static void ieee80211_sta_timer(void *eloop_ctx, void *timeout_ctx)
2118 struct wpa_supplicant *wpa_s = eloop_ctx;
2120 switch (wpa_s->mlme.state) {
2121 case IEEE80211_DISABLED:
2123 case IEEE80211_AUTHENTICATE:
2124 ieee80211_authenticate(wpa_s);
2126 case IEEE80211_ASSOCIATE:
2127 ieee80211_associate(wpa_s);
2129 case IEEE80211_ASSOCIATED:
2130 ieee80211_associated(wpa_s);
2132 case IEEE80211_IBSS_SEARCH:
2133 ieee80211_sta_find_ibss(wpa_s);
2135 case IEEE80211_IBSS_JOINED:
2136 ieee80211_sta_merge_ibss(wpa_s);
2139 wpa_printf(MSG_DEBUG, "ieee80211_sta_timer: Unknown state %d",
2144 if (ieee80211_privacy_mismatch(wpa_s)) {
2145 wpa_printf(MSG_DEBUG, "MLME: privacy configuration mismatch "
2146 "and mixed-cell disabled - disassociate");
2148 ieee80211_send_disassoc(wpa_s, WLAN_REASON_UNSPECIFIED);
2149 ieee80211_set_associated(wpa_s, 0);
2154 static void ieee80211_sta_new_auth(struct wpa_supplicant *wpa_s)
2156 struct wpa_ssid *ssid = wpa_s->current_ssid;
2157 if (ssid && ssid->mode != WPAS_MODE_INFRA)
2161 if (local->hw->reset_tsf) {
2162 /* Reset own TSF to allow time synchronization work. */
2163 local->hw->reset_tsf(local->mdev);
2167 wpa_s->mlme.wmm_last_param_set = -1; /* allow any WMM update */
2170 if (wpa_s->mlme.auth_algs & WPA_AUTH_ALG_OPEN)
2171 wpa_s->mlme.auth_alg = WLAN_AUTH_OPEN;
2172 else if (wpa_s->mlme.auth_algs & WPA_AUTH_ALG_SHARED)
2173 wpa_s->mlme.auth_alg = WLAN_AUTH_SHARED_KEY;
2174 else if (wpa_s->mlme.auth_algs & WPA_AUTH_ALG_LEAP)
2175 wpa_s->mlme.auth_alg = WLAN_AUTH_LEAP;
2177 wpa_s->mlme.auth_alg = WLAN_AUTH_OPEN;
2178 wpa_printf(MSG_DEBUG, "MLME: Initial auth_alg=%d",
2179 wpa_s->mlme.auth_alg);
2180 wpa_s->mlme.auth_transaction = -1;
2181 wpa_s->mlme.auth_tries = wpa_s->mlme.assoc_tries = 0;
2182 ieee80211_authenticate(wpa_s);
2186 static int ieee80211_ibss_allowed(struct wpa_supplicant *wpa_s)
2191 for (m = 0; m < local->hw->num_modes; m++) {
2192 struct ieee80211_hw_modes *mode = &local->hw->modes[m];
2193 if (mode->mode != local->conf.phymode)
2195 for (c = 0; c < mode->num_channels; c++) {
2196 struct ieee80211_channel *chan = &mode->channels[c];
2197 if (chan->flag & IEEE80211_CHAN_W_SCAN &&
2198 chan->chan == local->conf.channel) {
2199 if (chan->flag & IEEE80211_CHAN_W_IBSS)
2211 static int ieee80211_sta_join_ibss(struct wpa_supplicant *wpa_s,
2212 struct ieee80211_sta_bss *bss)
2214 int res = 0, rates, done = 0, bssid_changed;
2215 struct ieee80211_mgmt *mgmt;
2217 struct ieee80211_tx_control control;
2218 struct ieee80211_rate *rate;
2219 struct rate_control_extra extra;
2224 /* Remove possible STA entries from other IBSS networks. */
2226 sta_info_flush(local, NULL);
2228 if (local->hw->reset_tsf) {
2229 /* Reset own TSF to allow time synchronization work. */
2230 local->hw->reset_tsf(local->mdev);
2233 bssid_changed = os_memcmp(wpa_s->bssid, bss->bssid, ETH_ALEN);
2234 os_memcpy(wpa_s->bssid, bss->bssid, ETH_ALEN);
2236 wpas_notify_bssid_changed(wpa_s);
2239 local->conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10;
2241 sdata->drop_unencrypted = bss->capability &
2242 host_to_le16(WLAN_CAPABILITY_PRIVACY) ? 1 : 0;
2246 os_memset(&rq, 0, sizeof(rq));
2247 rq.m = bss->freq * 100000;
2249 res = ieee80211_ioctl_siwfreq(wpa_s, NULL, &rq, NULL);
2252 if (!ieee80211_ibss_allowed(wpa_s)) {
2254 wpa_printf(MSG_DEBUG, "MLME: IBSS not allowed on channel %d "
2255 "(%d MHz)", local->conf.channel,
2261 /* Set beacon template based on scan results */
2262 buf = os_malloc(400);
2268 mgmt = (struct ieee80211_mgmt *) buf;
2269 len += 24 + sizeof(mgmt->u.beacon);
2270 os_memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon));
2271 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
2272 WLAN_FC_STYPE_BEACON);
2273 os_memset(mgmt->da, 0xff, ETH_ALEN);
2274 os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
2275 os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
2277 mgmt->u.beacon.beacon_int =
2278 host_to_le16(local->conf.beacon_int);
2280 mgmt->u.beacon.capab_info = host_to_le16(bss->capability);
2283 len += 2 + wpa_s->mlme.ssid_len;
2284 *pos++ = WLAN_EID_SSID;
2285 *pos++ = wpa_s->mlme.ssid_len;
2286 os_memcpy(pos, wpa_s->mlme.ssid, wpa_s->mlme.ssid_len);
2288 rates = bss->supp_rates_len;
2293 *pos++ = WLAN_EID_SUPP_RATES;
2295 os_memcpy(pos, bss->supp_rates, rates);
2299 *pos++ = WLAN_EID_DS_PARAMS;
2301 *pos++ = bss->channel;
2305 *pos++ = WLAN_EID_IBSS_PARAMS;
2307 /* FIX: set ATIM window based on scan results */
2311 if (bss->supp_rates_len > 8) {
2312 rates = bss->supp_rates_len - 8;
2315 *pos++ = WLAN_EID_EXT_SUPP_RATES;
2317 os_memcpy(pos, &bss->supp_rates[8], rates);
2321 os_memset(&control, 0, sizeof(control));
2322 control.pkt_type = PKT_PROBE_RESP;
2323 os_memset(&extra, 0, sizeof(extra));
2324 extra.endidx = local->num_curr_rates;
2325 rate = rate_control_get_rate(wpa_s, skb, &extra);
2327 wpa_printf(MSG_DEBUG, "MLME: Failed to determine TX "
2328 "rate for IBSS beacon");
2331 control.tx_rate = (wpa_s->mlme.short_preamble &&
2332 (rate->flags & IEEE80211_RATE_PREAMBLE2)) ?
2333 rate->val2 : rate->val;
2334 control.antenna_sel = local->conf.antenna_sel;
2335 control.power_level = local->conf.power_level;
2337 control.retry_limit = 1;
2338 control.rts_cts_duration = 0;
2342 wpa_s->mlme.probe_resp = skb_copy(skb, GFP_ATOMIC);
2343 if (wpa_s->mlme.probe_resp) {
2344 mgmt = (struct ieee80211_mgmt *)
2345 wpa_s->mlme.probe_resp->data;
2346 mgmt->frame_control =
2347 IEEE80211_FC(WLAN_FC_TYPE_MGMT,
2348 WLAN_FC_STYPE_PROBE_RESP);
2350 wpa_printf(MSG_DEBUG, "MLME: Could not allocate "
2351 "ProbeResp template for IBSS");
2354 if (local->hw->beacon_update &&
2355 local->hw->beacon_update(wpa_s, skb, &control) == 0) {
2356 wpa_printf(MSG_DEBUG, "MLME: Configured IBSS beacon "
2357 "template based on scan results");
2362 for (i = 0; i < bss->supp_rates_len; i++) {
2363 int rate = (bss->supp_rates[i] & 0x7f) * 5;
2364 if (local->conf.phymode == MODE_ATHEROS_TURBO)
2366 for (j = 0; j < local->num_curr_rates; j++)
2367 if (local->curr_rates[j] == rate)
2370 wpa_s->mlme.supp_rates_bits = rates;
2377 wpa_printf(MSG_DEBUG, "MLME: Failed to configure IBSS beacon "
2381 wpa_s->mlme.state = IEEE80211_IBSS_JOINED;
2382 ieee80211_reschedule_timer(wpa_s, IEEE80211_IBSS_MERGE_INTERVAL);
2389 static int ieee80211_sta_create_ibss(struct wpa_supplicant *wpa_s)
2391 struct ieee80211_sta_bss *bss;
2392 u8 bssid[ETH_ALEN], *pos;
2396 /* Easier testing, use fixed BSSID. */
2397 os_memset(bssid, 0xfe, ETH_ALEN);
2399 /* Generate random, not broadcast, locally administered BSSID. Mix in
2400 * own MAC address to make sure that devices that do not have proper
2401 * random number generator get different BSSID. */
2402 os_get_random(bssid, ETH_ALEN);
2403 for (i = 0; i < ETH_ALEN; i++)
2404 bssid[i] ^= wpa_s->own_addr[i];
2409 wpa_printf(MSG_DEBUG, "MLME: Creating new IBSS network, BSSID "
2410 MACSTR "", MAC2STR(bssid));
2412 bss = ieee80211_bss_add(wpa_s, bssid);
2417 if (local->conf.beacon_int == 0)
2418 local->conf.beacon_int = 100;
2419 bss->beacon_int = local->conf.beacon_int;
2420 bss->hw_mode = local->conf.phymode;
2421 bss->channel = local->conf.channel;
2422 bss->freq = local->conf.freq;
2424 os_get_time(&bss->last_update);
2425 bss->capability = host_to_le16(WLAN_CAPABILITY_IBSS);
2427 if (sdata->default_key) {
2428 bss->capability |= host_to_le16(WLAN_CAPABILITY_PRIVACY);
2430 sdata->drop_unencrypted = 0;
2431 bss->supp_rates_len = local->num_curr_rates;
2433 pos = bss->supp_rates;
2435 for (i = 0; i < local->num_curr_rates; i++) {
2436 int rate = local->curr_rates[i];
2437 if (local->conf.phymode == MODE_ATHEROS_TURBO)
2439 *pos++ = (u8) (rate / 5);
2443 return ieee80211_sta_join_ibss(wpa_s, bss);
2448 static int ieee80211_sta_find_ibss(struct wpa_supplicant *wpa_s)
2450 struct ieee80211_sta_bss *bss;
2456 if (wpa_s->mlme.ssid_len == 0)
2459 active_ibss = ieee80211_sta_active_ibss(wpa_s);
2460 #ifdef IEEE80211_IBSS_DEBUG
2461 wpa_printf(MSG_DEBUG, "MLME: sta_find_ibss (active_ibss=%d)",
2463 #endif /* IEEE80211_IBSS_DEBUG */
2464 for (bss = wpa_s->mlme.sta_bss_list; bss; bss = bss->next) {
2465 if (wpa_s->mlme.ssid_len != bss->ssid_len ||
2466 os_memcmp(wpa_s->mlme.ssid, bss->ssid, bss->ssid_len) != 0
2467 || !(bss->capability & WLAN_CAPABILITY_IBSS))
2469 #ifdef IEEE80211_IBSS_DEBUG
2470 wpa_printf(MSG_DEBUG, " bssid=" MACSTR " found",
2471 MAC2STR(bss->bssid));
2472 #endif /* IEEE80211_IBSS_DEBUG */
2473 os_memcpy(bssid, bss->bssid, ETH_ALEN);
2476 os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0)
2480 #ifdef IEEE80211_IBSS_DEBUG
2481 wpa_printf(MSG_DEBUG, " sta_find_ibss: selected " MACSTR " current "
2482 MACSTR, MAC2STR(bssid), MAC2STR(wpa_s->bssid));
2483 #endif /* IEEE80211_IBSS_DEBUG */
2484 if (found && os_memcmp(wpa_s->bssid, bssid, ETH_ALEN) != 0 &&
2485 (bss = ieee80211_bss_get(wpa_s, bssid))) {
2486 wpa_printf(MSG_DEBUG, "MLME: Selected IBSS BSSID " MACSTR
2487 " based on configured SSID",
2489 return ieee80211_sta_join_ibss(wpa_s, bss);
2491 #ifdef IEEE80211_IBSS_DEBUG
2492 wpa_printf(MSG_DEBUG, " did not try to join ibss");
2493 #endif /* IEEE80211_IBSS_DEBUG */
2495 /* Selected IBSS not found in current scan results - try to scan */
2498 if (wpa_s->mlme.state == IEEE80211_IBSS_JOINED &&
2499 !ieee80211_sta_active_ibss(wpa_s)) {
2500 ieee80211_reschedule_timer(wpa_s,
2501 IEEE80211_IBSS_MERGE_INTERVAL);
2502 } else if (time_after(jiffies, wpa_s->mlme.last_scan_completed +
2503 IEEE80211_SCAN_INTERVAL)) {
2504 wpa_printf(MSG_DEBUG, "MLME: Trigger new scan to find an IBSS "
2506 return ieee80211_sta_req_scan(wpa_s->mlme.ssid,
2507 wpa_s->mlme.ssid_len);
2508 } else if (wpa_s->mlme.state != IEEE80211_IBSS_JOINED) {
2509 int interval = IEEE80211_SCAN_INTERVAL;
2511 if (time_after(jiffies, wpa_s->mlme.ibss_join_req +
2512 IEEE80211_IBSS_JOIN_TIMEOUT)) {
2513 if (wpa_s->mlme.create_ibss &&
2514 ieee80211_ibss_allowed(wpa_s))
2515 return ieee80211_sta_create_ibss(wpa_s);
2516 if (wpa_s->mlme.create_ibss) {
2517 wpa_printf(MSG_DEBUG, "MLME: IBSS not allowed "
2518 "on the configured channel %d "
2520 local->conf.channel,
2524 /* No IBSS found - decrease scan interval and continue
2526 interval = IEEE80211_SCAN_INTERVAL_SLOW;
2529 wpa_s->mlme.state = IEEE80211_IBSS_SEARCH;
2530 ieee80211_reschedule_timer(wpa_s, interval);
2539 int ieee80211_sta_get_ssid(struct wpa_supplicant *wpa_s, u8 *ssid,
2542 os_memcpy(ssid, wpa_s->mlme.ssid, wpa_s->mlme.ssid_len);
2543 *len = wpa_s->mlme.ssid_len;
2548 int ieee80211_sta_associate(struct wpa_supplicant *wpa_s,
2549 struct wpa_driver_associate_params *params)
2551 struct ieee80211_sta_bss *bss;
2554 wpa_s->mlme.bssid_set = 0;
2555 wpa_s->mlme.freq = params->freq;
2556 if (params->bssid) {
2557 bssid_changed = os_memcmp(wpa_s->bssid, params->bssid,
2559 os_memcpy(wpa_s->bssid, params->bssid, ETH_ALEN);
2561 wpas_notify_bssid_changed(wpa_s);
2563 if (!is_zero_ether_addr(params->bssid))
2564 wpa_s->mlme.bssid_set = 1;
2565 bss = ieee80211_bss_get(wpa_s, wpa_s->bssid);
2567 wpa_s->mlme.phymode = bss->hw_mode;
2568 wpa_s->mlme.channel = bss->channel;
2569 wpa_s->mlme.freq = bss->freq;
2574 /* TODO: This should always be done for IBSS, even if IEEE80211_QOS is
2576 if (local->hw->conf_tx) {
2577 struct ieee80211_tx_queue_params qparam;
2580 os_memset(&qparam, 0, sizeof(qparam));
2581 /* TODO: are these ok defaults for all hw_modes? */
2584 local->conf.phymode == MODE_IEEE80211B ? 31 : 15;
2585 qparam.cw_max = 1023;
2586 qparam.burst_time = 0;
2587 for (i = IEEE80211_TX_QUEUE_DATA0; i < NUM_TX_DATA_QUEUES; i++)
2589 local->hw->conf_tx(wpa_s, i + IEEE80211_TX_QUEUE_DATA0,
2592 /* IBSS uses different parameters for Beacon sending */
2596 local->hw->conf_tx(wpa_s, IEEE80211_TX_QUEUE_BEACON, &qparam);
2600 if (wpa_s->mlme.ssid_len != params->ssid_len ||
2601 os_memcmp(wpa_s->mlme.ssid, params->ssid, params->ssid_len) != 0)
2602 wpa_s->mlme.prev_bssid_set = 0;
2603 os_memcpy(wpa_s->mlme.ssid, params->ssid, params->ssid_len);
2604 os_memset(wpa_s->mlme.ssid + params->ssid_len, 0,
2605 MAX_SSID_LEN - params->ssid_len);
2606 wpa_s->mlme.ssid_len = params->ssid_len;
2607 wpa_s->mlme.ssid_set = 1;
2609 os_free(wpa_s->mlme.extra_ie);
2610 if (params->wpa_ie == NULL || params->wpa_ie_len == 0) {
2611 wpa_s->mlme.extra_ie = NULL;
2612 wpa_s->mlme.extra_ie_len = 0;
2614 wpa_s->mlme.extra_ie = os_malloc(params->wpa_ie_len);
2615 if (wpa_s->mlme.extra_ie == NULL) {
2616 wpa_s->mlme.extra_ie_len = 0;
2619 os_memcpy(wpa_s->mlme.extra_ie, params->wpa_ie,
2620 params->wpa_ie_len);
2621 wpa_s->mlme.extra_ie_len = params->wpa_ie_len;
2624 wpa_s->mlme.key_mgmt = params->key_mgmt_suite;
2626 ieee80211_sta_set_channel(wpa_s, wpa_s->mlme.phymode,
2627 wpa_s->mlme.channel, wpa_s->mlme.freq);
2629 if (params->mode == WPAS_MODE_IBSS && !wpa_s->mlme.bssid_set) {
2630 os_get_time(&wpa_s->mlme.ibss_join_req);
2631 wpa_s->mlme.state = IEEE80211_IBSS_SEARCH;
2632 return ieee80211_sta_find_ibss(wpa_s);
2635 if (wpa_s->mlme.bssid_set)
2636 ieee80211_sta_new_auth(wpa_s);
2642 static void ieee80211_sta_save_oper_chan(struct wpa_supplicant *wpa_s)
2644 wpa_s->mlme.scan_oper_channel = wpa_s->mlme.channel;
2645 wpa_s->mlme.scan_oper_freq = wpa_s->mlme.freq;
2646 wpa_s->mlme.scan_oper_phymode = wpa_s->mlme.phymode;
2650 static int ieee80211_sta_restore_oper_chan(struct wpa_supplicant *wpa_s)
2652 wpa_s->mlme.channel = wpa_s->mlme.scan_oper_channel;
2653 wpa_s->mlme.freq = wpa_s->mlme.scan_oper_freq;
2654 wpa_s->mlme.phymode = wpa_s->mlme.scan_oper_phymode;
2655 if (wpa_s->mlme.freq == 0)
2657 return ieee80211_sta_set_channel(wpa_s, wpa_s->mlme.phymode,
2658 wpa_s->mlme.channel,
2663 static int ieee80211_active_scan(struct wpa_supplicant *wpa_s)
2668 for (m = 0; m < wpa_s->mlme.num_modes; m++) {
2669 struct hostapd_hw_modes *mode = &wpa_s->mlme.modes[m];
2670 if ((int) mode->mode != (int) wpa_s->mlme.phymode)
2672 for (c = 0; c < mode->num_channels; c++) {
2673 struct hostapd_channel_data *chan = &mode->channels[c];
2674 if (!(chan->flag & HOSTAPD_CHAN_DISABLED) &&
2675 chan->chan == wpa_s->mlme.channel) {
2676 if (!(chan->flag & HOSTAPD_CHAN_PASSIVE_SCAN))
2687 static void ieee80211_sta_scan_timer(void *eloop_ctx, void *timeout_ctx)
2689 struct wpa_supplicant *wpa_s = eloop_ctx;
2690 struct hostapd_hw_modes *mode;
2691 struct hostapd_channel_data *chan;
2694 struct wpa_ssid *ssid = wpa_s->current_ssid;
2697 if (!wpa_s->mlme.sta_scanning || wpa_s->mlme.modes == NULL)
2700 adhoc = ssid && ssid->mode == 1;
2702 switch (wpa_s->mlme.scan_state) {
2703 case SCAN_SET_CHANNEL:
2704 mode = &wpa_s->mlme.modes[wpa_s->mlme.scan_hw_mode_idx];
2705 if (wpa_s->mlme.scan_hw_mode_idx >=
2706 (int) wpa_s->mlme.num_modes ||
2707 (wpa_s->mlme.scan_hw_mode_idx + 1 ==
2708 (int) wpa_s->mlme.num_modes
2709 && wpa_s->mlme.scan_channel_idx >= mode->num_channels)) {
2710 if (ieee80211_sta_restore_oper_chan(wpa_s)) {
2711 wpa_printf(MSG_DEBUG, "MLME: failed to "
2712 "restore operational channel after "
2715 wpa_printf(MSG_DEBUG, "MLME: scan completed");
2716 wpa_s->mlme.sta_scanning = 0;
2717 os_get_time(&wpa_s->mlme.last_scan_completed);
2718 wpa_supplicant_event(wpa_s, EVENT_SCAN_RESULTS, NULL);
2720 if (!wpa_s->mlme.bssid_set ||
2721 (wpa_s->mlme.state ==
2722 IEEE80211_IBSS_JOINED &&
2723 !ieee80211_sta_active_ibss(wpa_s)))
2724 ieee80211_sta_find_ibss(wpa_s);
2728 skip = !(wpa_s->mlme.hw_modes & (1 << mode->mode));
2729 chan = &mode->channels[wpa_s->mlme.scan_channel_idx];
2730 if ((chan->flag & HOSTAPD_CHAN_DISABLED) ||
2731 (adhoc && (chan->flag & HOSTAPD_CHAN_NO_IBSS)) ||
2732 (wpa_s->mlme.hw_modes & (1 << HOSTAPD_MODE_IEEE80211G) &&
2733 mode->mode == HOSTAPD_MODE_IEEE80211B &&
2734 wpa_s->mlme.scan_skip_11b))
2736 if (!skip && wpa_s->mlme.scan_freqs) {
2738 for (i = 0; wpa_s->mlme.scan_freqs[i]; i++) {
2739 if (wpa_s->mlme.scan_freqs[i] == chan->freq) {
2749 wpa_printf(MSG_MSGDUMP,
2750 "MLME: scan channel %d (%d MHz)",
2751 chan->chan, chan->freq);
2753 wpa_s->mlme.channel = chan->chan;
2754 wpa_s->mlme.freq = chan->freq;
2755 wpa_s->mlme.phymode = mode->mode;
2756 if (ieee80211_sta_set_channel(wpa_s, mode->mode,
2757 chan->chan, chan->freq))
2759 wpa_printf(MSG_DEBUG, "MLME: failed to set "
2760 "channel %d (%d MHz) for scan",
2761 chan->chan, chan->freq);
2766 wpa_s->mlme.scan_channel_idx++;
2767 if (wpa_s->mlme.scan_channel_idx >=
2768 wpa_s->mlme.modes[wpa_s->mlme.scan_hw_mode_idx].
2770 wpa_s->mlme.scan_hw_mode_idx++;
2771 wpa_s->mlme.scan_channel_idx = 0;
2779 timeout = IEEE80211_PROBE_DELAY;
2780 wpa_s->mlme.scan_state = SCAN_SEND_PROBE;
2782 case SCAN_SEND_PROBE:
2783 if (ieee80211_active_scan(wpa_s)) {
2784 ieee80211_send_probe_req(wpa_s, NULL,
2785 wpa_s->mlme.scan_ssid,
2786 wpa_s->mlme.scan_ssid_len);
2787 timeout = IEEE80211_CHANNEL_TIME;
2789 timeout = IEEE80211_PASSIVE_CHANNEL_TIME;
2791 wpa_s->mlme.scan_state = SCAN_SET_CHANNEL;
2795 eloop_register_timeout(timeout / 1000, 1000 * (timeout % 1000),
2796 ieee80211_sta_scan_timer, wpa_s, NULL);
2800 int ieee80211_sta_req_scan(struct wpa_supplicant *wpa_s,
2801 struct wpa_driver_scan_params *params)
2803 const u8 *ssid = params->ssids[0].ssid;
2804 size_t ssid_len = params->ssids[0].ssid_len;
2806 if (ssid_len > MAX_SSID_LEN)
2809 /* MLME-SCAN.request (page 118) page 144 (11.1.3.1)
2810 * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS
2813 * ScanType: ACTIVE, PASSIVE
2814 * ProbeDelay: delay (in microseconds) to be used prior to transmitting
2815 * a Probe frame during active scanning
2817 * MinChannelTime (>= ProbeDelay), in TU
2818 * MaxChannelTime: (>= MinChannelTime), in TU
2821 /* MLME-SCAN.confirm
2823 * ResultCode: SUCCESS, INVALID_PARAMETERS
2826 /* TODO: if assoc, move to power save mode for the duration of the
2829 if (wpa_s->mlme.sta_scanning)
2832 wpa_printf(MSG_DEBUG, "MLME: starting scan");
2834 ieee80211_sta_set_probe_req_ie(wpa_s, params->extra_ies,
2835 params->extra_ies_len);
2837 os_free(wpa_s->mlme.scan_freqs);
2838 if (params->freqs) {
2840 for (i = 0; params->freqs[i]; i++)
2842 wpa_s->mlme.scan_freqs = os_malloc((i + 1) * sizeof(int));
2843 if (wpa_s->mlme.scan_freqs)
2844 os_memcpy(wpa_s->mlme.scan_freqs, params->freqs,
2845 (i + 1) * sizeof(int));
2847 wpa_s->mlme.scan_freqs = NULL;
2849 ieee80211_sta_save_oper_chan(wpa_s);
2851 wpa_s->mlme.sta_scanning = 1;
2852 /* TODO: stop TX queue? */
2855 wpa_s->mlme.scan_ssid_len = ssid_len;
2856 os_memcpy(wpa_s->mlme.scan_ssid, ssid, ssid_len);
2858 wpa_s->mlme.scan_ssid_len = 0;
2859 wpa_s->mlme.scan_skip_11b = 1; /* FIX: clear this is 11g is not
2861 wpa_s->mlme.scan_state = SCAN_SET_CHANNEL;
2862 wpa_s->mlme.scan_hw_mode_idx = 0;
2863 wpa_s->mlme.scan_channel_idx = 0;
2864 eloop_register_timeout(0, 1, ieee80211_sta_scan_timer, wpa_s, NULL);
2870 struct wpa_scan_results *
2871 ieee80211_sta_get_scan_results(struct wpa_supplicant *wpa_s)
2874 struct wpa_scan_results *res;
2875 struct wpa_scan_res *r;
2876 struct ieee80211_sta_bss *bss;
2878 res = os_zalloc(sizeof(*res));
2879 for (bss = wpa_s->mlme.sta_bss_list; bss; bss = bss->next)
2881 res->res = os_zalloc(ap_num * sizeof(struct wpa_scan_res *));
2882 if (res->res == NULL) {
2887 for (bss = wpa_s->mlme.sta_bss_list; bss; bss = bss->next) {
2888 r = os_zalloc(sizeof(*r) + bss->ie_len);
2891 os_memcpy(r->bssid, bss->bssid, ETH_ALEN);
2892 r->freq = bss->freq;
2893 r->beacon_int = bss->beacon_int;
2894 r->caps = bss->capability;
2895 r->level = bss->rssi;
2896 r->tsf = bss->timestamp;
2898 r->ie_len = bss->ie_len;
2899 os_memcpy(r + 1, bss->ie, bss->ie_len);
2902 res->res[res->num++] = r;
2910 struct sta_info * ieee80211_ibss_add_sta(struct wpa_supplicant *wpa_s,
2911 struct sk_buff *skb, u8 *bssid,
2914 struct ieee80211_local *local = dev->priv;
2915 struct list_head *ptr;
2916 struct sta_info *sta;
2917 struct wpa_supplicant *sta_dev = NULL;
2919 /* TODO: Could consider removing the least recently used entry and
2920 * allow new one to be added. */
2921 if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) {
2922 if (net_ratelimit()) {
2923 wpa_printf(MSG_DEBUG, "MLME: No room for a new IBSS "
2924 "STA entry " MACSTR, MAC2STR(addr));
2929 spin_lock_bh(&local->sub_if_lock);
2930 list_for_each(ptr, &local->sub_if_list) {
2931 sdata = list_entry(ptr, struct ieee80211_sub_if_data, list);
2932 if (sdata->type == IEEE80211_SUB_IF_TYPE_STA &&
2933 os_memcmp(bssid, sdata->u.sta.bssid, ETH_ALEN) == 0) {
2934 sta_dev = sdata->dev;
2938 spin_unlock_bh(&local->sub_if_lock);
2940 if (sta_dev == NULL)
2943 wpa_printf(MSG_DEBUG, "MLME: Adding new IBSS station " MACSTR
2944 " (dev=%s)", MAC2STR(addr), sta_dev->name);
2946 sta = sta_info_add(wpa_s, addr);
2952 sta->supp_rates = wpa_s->mlme.supp_rates_bits;
2954 rate_control_rate_init(local, sta);
2956 return sta; /* caller will call sta_info_release() */
2961 int ieee80211_sta_deauthenticate(struct wpa_supplicant *wpa_s, u16 reason)
2963 wpa_printf(MSG_DEBUG, "MLME: deauthenticate(reason=%d)", reason);
2965 ieee80211_send_deauth(wpa_s, reason);
2966 ieee80211_set_associated(wpa_s, 0);
2971 int ieee80211_sta_disassociate(struct wpa_supplicant *wpa_s, u16 reason)
2973 wpa_printf(MSG_DEBUG, "MLME: disassociate(reason=%d)", reason);
2975 if (!wpa_s->mlme.associated)
2978 ieee80211_send_disassoc(wpa_s, reason);
2979 ieee80211_set_associated(wpa_s, 0);
2984 void ieee80211_sta_rx(struct wpa_supplicant *wpa_s, const u8 *buf, size_t len,
2985 struct ieee80211_rx_status *rx_status)
2987 struct ieee80211_mgmt *mgmt;
2991 /* wpa_hexdump(MSG_MSGDUMP, "MLME: Received frame", buf, len); */
2993 if (wpa_s->mlme.sta_scanning) {
2994 ieee80211_sta_rx_scan(wpa_s, buf, len, rx_status);
3001 mgmt = (struct ieee80211_mgmt *) buf;
3002 fc = le_to_host16(mgmt->frame_control);
3004 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT)
3005 ieee80211_sta_rx_mgmt(wpa_s, buf, len, rx_status);
3006 else if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_DATA) {
3007 if ((fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) !=
3010 /* mgmt->sa is actually BSSID for FromDS data frames */
3011 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) != 0)
3013 /* Skip IEEE 802.11 and LLC headers */
3015 if (WPA_GET_BE16(pos) != ETH_P_EAPOL)
3018 /* mgmt->bssid is actually BSSID for SA data frames */
3019 wpa_supplicant_rx_eapol(wpa_s, mgmt->bssid,
3020 pos, buf + len - pos);
3025 void ieee80211_sta_free_hw_features(struct hostapd_hw_modes *hw_features,
3026 size_t num_hw_features)
3030 if (hw_features == NULL)
3033 for (i = 0; i < num_hw_features; i++) {
3034 os_free(hw_features[i].channels);
3035 os_free(hw_features[i].rates);
3038 os_free(hw_features);
3042 int ieee80211_sta_init(struct wpa_supplicant *wpa_s)
3044 u16 num_modes, flags;
3046 wpa_s->mlme.modes = wpa_drv_get_hw_feature_data(wpa_s, &num_modes,
3048 if (wpa_s->mlme.modes == NULL) {
3049 wpa_printf(MSG_ERROR, "MLME: Failed to read supported "
3050 "channels and rates from the driver");
3054 wpa_s->mlme.num_modes = num_modes;
3056 wpa_s->mlme.hw_modes = 1 << HOSTAPD_MODE_IEEE80211A;
3057 wpa_s->mlme.hw_modes |= 1 << HOSTAPD_MODE_IEEE80211B;
3058 wpa_s->mlme.hw_modes |= 1 << HOSTAPD_MODE_IEEE80211G;
3060 wpa_s->mlme.wmm_enabled = 1;
3066 void ieee80211_sta_deinit(struct wpa_supplicant *wpa_s)
3068 eloop_cancel_timeout(ieee80211_sta_timer, wpa_s, NULL);
3069 eloop_cancel_timeout(ieee80211_sta_scan_timer, wpa_s, NULL);
3070 os_free(wpa_s->mlme.extra_ie);
3071 wpa_s->mlme.extra_ie = NULL;
3072 os_free(wpa_s->mlme.extra_probe_ie);
3073 wpa_s->mlme.extra_probe_ie = NULL;
3074 os_free(wpa_s->mlme.assocreq_ies);
3075 wpa_s->mlme.assocreq_ies = NULL;
3076 os_free(wpa_s->mlme.assocresp_ies);
3077 wpa_s->mlme.assocresp_ies = NULL;
3078 ieee80211_bss_list_deinit(wpa_s);
3079 ieee80211_sta_free_hw_features(wpa_s->mlme.modes,
3080 wpa_s->mlme.num_modes);
3081 #ifdef CONFIG_IEEE80211R
3082 os_free(wpa_s->mlme.ft_ies);
3083 wpa_s->mlme.ft_ies = NULL;
3084 wpa_s->mlme.ft_ies_len = 0;
3085 #endif /* CONFIG_IEEE80211R */
3087 os_free(wpa_s->mlme.scan_freqs);
3088 wpa_s->mlme.scan_freqs = NULL;
3092 #ifdef CONFIG_IEEE80211R
3094 int ieee80211_sta_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
3095 const u8 *ies, size_t ies_len)
3098 wpa_printf(MSG_DEBUG, "MLME: Clear FT mobility domain");
3099 os_memset(wpa_s->mlme.current_md, 0, MOBILITY_DOMAIN_ID_LEN);
3101 wpa_printf(MSG_DEBUG, "MLME: Update FT IEs for MD " MACSTR,
3103 os_memcpy(wpa_s->mlme.current_md, md, MOBILITY_DOMAIN_ID_LEN);
3106 wpa_hexdump(MSG_DEBUG, "MLME: FT IEs", ies, ies_len);
3107 os_free(wpa_s->mlme.ft_ies);
3108 wpa_s->mlme.ft_ies = os_malloc(ies_len);
3109 if (wpa_s->mlme.ft_ies == NULL)
3111 os_memcpy(wpa_s->mlme.ft_ies, ies, ies_len);
3112 wpa_s->mlme.ft_ies_len = ies_len;
3118 int ieee80211_sta_send_ft_action(struct wpa_supplicant *wpa_s, u8 action,
3119 const u8 *target_ap,
3120 const u8 *ies, size_t ies_len)
3124 struct ieee80211_mgmt *mgmt;
3128 * Action frame payload:
3129 * Category[1] = 6 (Fast BSS Transition)
3130 * Action[1] = 1 (Fast BSS Transition Request)
3136 buf = os_zalloc(sizeof(*mgmt) + ies_len);
3138 wpa_printf(MSG_DEBUG, "MLME: Failed to allocate buffer for "
3143 mgmt = (struct ieee80211_mgmt *) buf;
3145 os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
3146 os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
3147 os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
3148 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
3149 WLAN_FC_STYPE_ACTION);
3150 mgmt->u.action.category = WLAN_ACTION_FT;
3151 mgmt->u.action.u.ft_action_req.action = action;
3152 os_memcpy(mgmt->u.action.u.ft_action_req.sta_addr, wpa_s->own_addr,
3154 os_memcpy(mgmt->u.action.u.ft_action_req.target_ap_addr, target_ap,
3156 os_memcpy(mgmt->u.action.u.ft_action_req.variable, ies, ies_len);
3157 len += 1 + sizeof(mgmt->u.action.u.ft_action_req) + ies_len;
3159 wpa_printf(MSG_DEBUG, "MLME: Send FT Action Frame: Action=%d "
3160 "Target AP=" MACSTR " body_len=%lu",
3161 action, MAC2STR(target_ap), (unsigned long) ies_len);
3163 res = ieee80211_sta_tx(wpa_s, buf, len);
3169 #endif /* CONFIG_IEEE80211R */
3172 static int ieee80211_sta_set_probe_req_ie(struct wpa_supplicant *wpa_s,
3173 const u8 *ies, size_t ies_len)
3175 os_free(wpa_s->mlme.extra_probe_ie);
3176 wpa_s->mlme.extra_probe_ie = NULL;
3177 wpa_s->mlme.extra_probe_ie_len = 0;
3182 wpa_s->mlme.extra_probe_ie = os_malloc(ies_len);
3183 if (wpa_s->mlme.extra_probe_ie == NULL)
3186 os_memcpy(wpa_s->mlme.extra_probe_ie, ies, ies_len);
3187 wpa_s->mlme.extra_probe_ie_len = ies_len;