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 "ieee802_11_defs.h"
26 #include "ieee802_11_common.h"
30 /* Timeouts and intervals in milliseconds */
31 #define IEEE80211_AUTH_TIMEOUT (200)
32 #define IEEE80211_AUTH_MAX_TRIES 3
33 #define IEEE80211_ASSOC_TIMEOUT (200)
34 #define IEEE80211_ASSOC_MAX_TRIES 3
35 #define IEEE80211_MONITORING_INTERVAL (2000)
36 #define IEEE80211_PROBE_INTERVAL (60000)
37 #define IEEE80211_RETRY_AUTH_INTERVAL (1000)
38 #define IEEE80211_SCAN_INTERVAL (2000)
39 #define IEEE80211_SCAN_INTERVAL_SLOW (15000)
40 #define IEEE80211_IBSS_JOIN_TIMEOUT (20000)
42 #define IEEE80211_PROBE_DELAY (33)
43 #define IEEE80211_CHANNEL_TIME (33)
44 #define IEEE80211_PASSIVE_CHANNEL_TIME (200)
45 #define IEEE80211_SCAN_RESULT_EXPIRE (10000)
46 #define IEEE80211_IBSS_MERGE_INTERVAL (30000)
47 #define IEEE80211_IBSS_INACTIVITY_LIMIT (60000)
49 #define IEEE80211_IBSS_MAX_STA_ENTRIES 128
52 #define IEEE80211_FC(type, stype) host_to_le16((type << 2) | (stype << 4))
55 struct ieee80211_sta_bss {
56 struct ieee80211_sta_bss *next;
57 struct ieee80211_sta_bss *hnext;
60 u8 ssid[MAX_SSID_LEN];
62 u16 capability; /* host byte order */
77 #define IEEE80211_MAX_SUPP_RATES 32
78 u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
79 size_t supp_rates_len;
84 struct os_time last_update;
88 static void ieee80211_send_probe_req(struct wpa_supplicant *wpa_s,
90 const u8 *ssid, size_t ssid_len);
91 static struct ieee80211_sta_bss *
92 ieee80211_bss_get(struct wpa_supplicant *wpa_s, const u8 *bssid);
93 static int ieee80211_sta_find_ibss(struct wpa_supplicant *wpa_s);
94 static int ieee80211_sta_wep_configured(struct wpa_supplicant *wpa_s);
95 static void ieee80211_sta_timer(void *eloop_ctx, void *timeout_ctx);
96 static void ieee80211_sta_scan_timer(void *eloop_ctx, void *timeout_ctx);
97 static void ieee80211_build_tspec(struct wpabuf *buf);
100 static int ieee80211_sta_set_channel(struct wpa_supplicant *wpa_s,
101 wpa_hw_mode phymode, int chan,
105 struct wpa_hw_modes *mode;
107 for (i = 0; i < wpa_s->mlme.num_modes; i++) {
108 mode = &wpa_s->mlme.modes[i];
109 if (mode->mode == phymode) {
110 wpa_s->mlme.curr_rates = mode->rates;
111 wpa_s->mlme.num_curr_rates = mode->num_rates;
116 return wpa_drv_set_channel(wpa_s, phymode, chan, freq);
120 static int ecw2cw(int ecw)
131 static void ieee80211_sta_wmm_params(struct wpa_supplicant *wpa_s,
132 u8 *wmm_param, size_t wmm_param_len)
139 if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
141 count = wmm_param[6] & 0x0f;
142 if (count == wpa_s->mlme.wmm_last_param_set)
144 wpa_s->mlme.wmm_last_param_set = count;
147 left = wmm_param_len - 8;
150 for (; left >= 4; left -= 4, pos += 4) {
151 int aci = (pos[0] >> 5) & 0x03;
152 int acm = (pos[0] >> 4) & 0x01;
153 int aifs, cw_max, cw_min, burst_time;
158 wmm_acm |= BIT(1) | BIT(2); /* BK/- */
162 wmm_acm |= BIT(4) | BIT(5); /* CL/VI */
166 wmm_acm |= BIT(6) | BIT(7); /* VO/NC */
171 wmm_acm |= BIT(0) | BIT(3); /* BE/EE */
175 aifs = pos[0] & 0x0f;
176 cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
177 cw_min = ecw2cw(pos[1] & 0x0f);
178 /* TXOP is in units of 32 usec; burst_time in 0.1 ms */
179 burst_time = (pos[2] | (pos[3] << 8)) * 32 / 100;
180 wpa_printf(MSG_DEBUG, "MLME: WMM aci=%d acm=%d aifs=%d "
181 "cWmin=%d cWmax=%d burst=%d",
182 aci, acm, aifs, cw_min, cw_max, burst_time);
183 /* TODO: driver configuration */
188 static void ieee80211_set_associated(struct wpa_supplicant *wpa_s, int assoc)
190 if (wpa_s->mlme.associated == assoc && !assoc)
193 wpa_s->mlme.associated = assoc;
196 union wpa_event_data data;
197 os_memset(&data, 0, sizeof(data));
198 wpa_s->mlme.prev_bssid_set = 1;
199 os_memcpy(wpa_s->mlme.prev_bssid, wpa_s->bssid, ETH_ALEN);
200 data.assoc_info.req_ies = wpa_s->mlme.assocreq_ies;
201 data.assoc_info.req_ies_len = wpa_s->mlme.assocreq_ies_len;
202 data.assoc_info.resp_ies = wpa_s->mlme.assocresp_ies;
203 data.assoc_info.resp_ies_len = wpa_s->mlme.assocresp_ies_len;
204 wpa_supplicant_event(wpa_s, EVENT_ASSOC, &data);
206 wpa_supplicant_event(wpa_s, EVENT_DISASSOC, NULL);
208 os_get_time(&wpa_s->mlme.last_probe);
212 static int ieee80211_sta_tx(struct wpa_supplicant *wpa_s, const u8 *buf,
215 return wpa_drv_send_mlme(wpa_s, buf, len);
219 static void ieee80211_send_auth(struct wpa_supplicant *wpa_s,
220 int transaction, u8 *extra, size_t extra_len,
225 struct ieee80211_mgmt *mgmt;
227 buf = os_malloc(sizeof(*mgmt) + 6 + extra_len);
229 wpa_printf(MSG_DEBUG, "MLME: failed to allocate buffer for "
234 mgmt = (struct ieee80211_mgmt *) buf;
236 os_memset(mgmt, 0, 24 + 6);
237 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
240 mgmt->frame_control |= host_to_le16(WLAN_FC_ISWEP);
241 os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
242 os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
243 os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
244 mgmt->u.auth.auth_alg = host_to_le16(wpa_s->mlme.auth_alg);
245 mgmt->u.auth.auth_transaction = host_to_le16(transaction);
246 wpa_s->mlme.auth_transaction = transaction + 1;
247 mgmt->u.auth.status_code = host_to_le16(0);
249 os_memcpy(buf + len, extra, extra_len);
253 ieee80211_sta_tx(wpa_s, buf, len);
258 static void ieee80211_reschedule_timer(struct wpa_supplicant *wpa_s, int ms)
260 eloop_cancel_timeout(ieee80211_sta_timer, wpa_s, NULL);
261 eloop_register_timeout(ms / 1000, 1000 * (ms % 1000),
262 ieee80211_sta_timer, wpa_s, NULL);
266 static void ieee80211_authenticate(struct wpa_supplicant *wpa_s)
271 wpa_s->mlme.auth_tries++;
272 if (wpa_s->mlme.auth_tries > IEEE80211_AUTH_MAX_TRIES) {
273 wpa_printf(MSG_DEBUG, "MLME: authentication with AP " MACSTR
274 " timed out", MAC2STR(wpa_s->bssid));
278 wpa_s->mlme.state = IEEE80211_AUTHENTICATE;
279 wpa_printf(MSG_DEBUG, "MLME: authenticate with AP " MACSTR,
280 MAC2STR(wpa_s->bssid));
285 #ifdef CONFIG_IEEE80211R
286 if ((wpa_s->mlme.key_mgmt == KEY_MGMT_FT_802_1X ||
287 wpa_s->mlme.key_mgmt == KEY_MGMT_FT_PSK) &&
288 wpa_s->mlme.ft_ies) {
289 struct ieee80211_sta_bss *bss;
290 struct rsn_mdie *mdie = NULL;
291 bss = ieee80211_bss_get(wpa_s, wpa_s->bssid);
292 if (bss && bss->mdie_len >= 2 + sizeof(*mdie))
293 mdie = (struct rsn_mdie *) (bss->mdie + 2);
295 os_memcmp(mdie->mobility_domain, wpa_s->mlme.current_md,
296 MOBILITY_DOMAIN_ID_LEN) == 0) {
297 wpa_printf(MSG_DEBUG, "MLME: Trying to use FT "
299 wpa_s->mlme.auth_alg = WLAN_AUTH_FT;
300 extra = wpa_s->mlme.ft_ies;
301 extra_len = wpa_s->mlme.ft_ies_len;
304 #endif /* CONFIG_IEEE80211R */
306 ieee80211_send_auth(wpa_s, 1, extra, extra_len, 0);
308 ieee80211_reschedule_timer(wpa_s, IEEE80211_AUTH_TIMEOUT);
312 static void ieee80211_send_assoc(struct wpa_supplicant *wpa_s)
314 struct ieee80211_mgmt *mgmt;
318 struct ieee80211_sta_bss *bss;
322 if (wpa_s->mlme.curr_rates == NULL) {
323 wpa_printf(MSG_DEBUG, "MLME: curr_rates not set for assoc");
327 buflen = sizeof(*mgmt) + 200 + wpa_s->mlme.extra_ie_len +
328 wpa_s->mlme.ssid_len;
329 #ifdef CONFIG_IEEE80211R
330 if (wpa_s->mlme.ft_ies)
331 buflen += wpa_s->mlme.ft_ies_len;
332 #endif /* CONFIG_IEEE80211R */
333 buf = os_malloc(buflen);
335 wpa_printf(MSG_DEBUG, "MLME: failed to allocate buffer for "
341 capab = wpa_s->mlme.capab;
342 if (wpa_s->mlme.phymode == WPA_MODE_IEEE80211G) {
343 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME |
344 WLAN_CAPABILITY_SHORT_PREAMBLE;
346 bss = ieee80211_bss_get(wpa_s, wpa_s->bssid);
348 if (bss->capability & WLAN_CAPABILITY_PRIVACY)
349 capab |= WLAN_CAPABILITY_PRIVACY;
355 mgmt = (struct ieee80211_mgmt *) buf;
357 os_memset(mgmt, 0, 24);
358 os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
359 os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
360 os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
362 if (wpa_s->mlme.prev_bssid_set) {
364 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
365 WLAN_FC_STYPE_REASSOC_REQ);
366 mgmt->u.reassoc_req.capab_info = host_to_le16(capab);
367 mgmt->u.reassoc_req.listen_interval = host_to_le16(1);
368 os_memcpy(mgmt->u.reassoc_req.current_ap,
369 wpa_s->mlme.prev_bssid,
373 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
374 WLAN_FC_STYPE_ASSOC_REQ);
375 mgmt->u.assoc_req.capab_info = host_to_le16(capab);
376 mgmt->u.assoc_req.listen_interval = host_to_le16(1);
380 ies = pos = buf + blen;
381 blen += 2 + wpa_s->mlme.ssid_len;
382 *pos++ = WLAN_EID_SSID;
383 *pos++ = wpa_s->mlme.ssid_len;
384 os_memcpy(pos, wpa_s->mlme.ssid, wpa_s->mlme.ssid_len);
386 len = wpa_s->mlme.num_curr_rates;
391 *pos++ = WLAN_EID_SUPP_RATES;
393 for (i = 0; i < len; i++) {
394 int rate = wpa_s->mlme.curr_rates[i].rate;
395 *pos++ = (u8) (rate / 5);
398 if (wpa_s->mlme.num_curr_rates > len) {
400 blen += wpa_s->mlme.num_curr_rates - len + 2;
401 *pos++ = WLAN_EID_EXT_SUPP_RATES;
402 *pos++ = wpa_s->mlme.num_curr_rates - len;
403 for (i = len; i < wpa_s->mlme.num_curr_rates; i++) {
404 int rate = wpa_s->mlme.curr_rates[i].rate;
405 *pos++ = (u8) (rate / 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++) {
673 struct wpa_rate_data *rate = &wpa_s->mlme.curr_rates[i];
678 } else if (supp_rates[1] == 8) {
680 esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES;
682 pos = &esupp_rates[2];
689 *pos++ = rate->rate / 5;
692 if (wpa_s->mlme.extra_probe_ie) {
693 os_memcpy(pos, wpa_s->mlme.extra_probe_ie,
694 wpa_s->mlme.extra_probe_ie_len);
695 len += wpa_s->mlme.extra_probe_ie_len;
698 ieee80211_sta_tx(wpa_s, buf, len);
703 static int ieee80211_sta_wep_configured(struct wpa_supplicant *wpa_s)
706 if (sdata == NULL || sdata->default_key == NULL ||
707 sdata->default_key->alg != ALG_WEP)
716 static void ieee80211_auth_completed(struct wpa_supplicant *wpa_s)
718 wpa_printf(MSG_DEBUG, "MLME: authenticated");
719 wpa_s->mlme.authenticated = 1;
720 ieee80211_associate(wpa_s);
724 static void ieee80211_auth_challenge(struct wpa_supplicant *wpa_s,
725 struct ieee80211_mgmt *mgmt,
727 struct ieee80211_rx_status *rx_status)
730 struct ieee802_11_elems elems;
732 wpa_printf(MSG_DEBUG, "MLME: replying to auth challenge");
733 pos = mgmt->u.auth.variable;
734 if (ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems, 0)
736 wpa_printf(MSG_DEBUG, "MLME: failed to parse Auth(challenge)");
739 if (elems.challenge == NULL) {
740 wpa_printf(MSG_DEBUG, "MLME: no challenge IE in shared key "
744 ieee80211_send_auth(wpa_s, 3, elems.challenge - 2,
745 elems.challenge_len + 2, 1);
749 static void ieee80211_rx_mgmt_auth(struct wpa_supplicant *wpa_s,
750 struct ieee80211_mgmt *mgmt,
752 struct ieee80211_rx_status *rx_status)
754 struct wpa_ssid *ssid = wpa_s->current_ssid;
755 u16 auth_alg, auth_transaction, status_code;
758 adhoc = ssid && ssid->mode == 1;
760 if (wpa_s->mlme.state != IEEE80211_AUTHENTICATE && !adhoc) {
761 wpa_printf(MSG_DEBUG, "MLME: authentication frame received "
762 "from " MACSTR ", but not in authenticate state - "
763 "ignored", MAC2STR(mgmt->sa));
768 wpa_printf(MSG_DEBUG, "MLME: too short (%lu) authentication "
769 "frame received from " MACSTR " - ignored",
770 (unsigned long) len, MAC2STR(mgmt->sa));
774 if (!adhoc && os_memcmp(wpa_s->bssid, mgmt->sa, ETH_ALEN) != 0) {
775 wpa_printf(MSG_DEBUG, "MLME: authentication frame received "
776 "from unknown AP (SA=" MACSTR " BSSID=" MACSTR
778 MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid));
782 if (adhoc && os_memcmp(wpa_s->bssid, mgmt->bssid, ETH_ALEN) != 0) {
783 wpa_printf(MSG_DEBUG, "MLME: authentication frame received "
784 "from unknown BSSID (SA=" MACSTR " BSSID=" MACSTR
786 MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid));
790 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
791 auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
792 status_code = le_to_host16(mgmt->u.auth.status_code);
794 wpa_printf(MSG_DEBUG, "MLME: RX authentication from " MACSTR
795 " (alg=%d transaction=%d status=%d)",
796 MAC2STR(mgmt->sa), auth_alg, auth_transaction, status_code);
799 /* IEEE 802.11 standard does not require authentication in IBSS
800 * networks and most implementations do not seem to use it.
801 * However, try to reply to authentication attempts if someone
802 * has actually implemented this.
803 * TODO: Could implement shared key authentication. */
804 if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1) {
805 wpa_printf(MSG_DEBUG, "MLME: unexpected IBSS "
806 "authentication frame (alg=%d "
808 auth_alg, auth_transaction);
811 ieee80211_send_auth(wpa_s, 2, NULL, 0, 0);
814 if (auth_alg != wpa_s->mlme.auth_alg ||
815 auth_transaction != wpa_s->mlme.auth_transaction) {
816 wpa_printf(MSG_DEBUG, "MLME: unexpected authentication frame "
817 "(alg=%d transaction=%d)",
818 auth_alg, auth_transaction);
822 if (status_code != WLAN_STATUS_SUCCESS) {
823 wpa_printf(MSG_DEBUG, "MLME: AP denied authentication "
824 "(auth_alg=%d code=%d)", wpa_s->mlme.auth_alg,
826 if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) {
827 const int num_algs = 3;
830 algs[0] = algs[1] = algs[2] = 0xff;
831 if (wpa_s->mlme.auth_algs & IEEE80211_AUTH_ALG_OPEN)
832 algs[0] = WLAN_AUTH_OPEN;
833 if (wpa_s->mlme.auth_algs &
834 IEEE80211_AUTH_ALG_SHARED_KEY)
835 algs[1] = WLAN_AUTH_SHARED_KEY;
836 if (wpa_s->mlme.auth_algs & IEEE80211_AUTH_ALG_LEAP)
837 algs[2] = WLAN_AUTH_LEAP;
838 if (wpa_s->mlme.auth_alg == WLAN_AUTH_OPEN)
840 else if (wpa_s->mlme.auth_alg == WLAN_AUTH_SHARED_KEY)
844 for (i = 0; i < num_algs; i++) {
848 if (algs[pos] == wpa_s->mlme.auth_alg ||
851 if (algs[pos] == WLAN_AUTH_SHARED_KEY &&
852 !ieee80211_sta_wep_configured(wpa_s))
854 wpa_s->mlme.auth_alg = algs[pos];
855 wpa_printf(MSG_DEBUG, "MLME: set auth_alg=%d "
857 wpa_s->mlme.auth_alg);
864 switch (wpa_s->mlme.auth_alg) {
867 ieee80211_auth_completed(wpa_s);
869 case WLAN_AUTH_SHARED_KEY:
870 if (wpa_s->mlme.auth_transaction == 4)
871 ieee80211_auth_completed(wpa_s);
873 ieee80211_auth_challenge(wpa_s, mgmt, len,
876 #ifdef CONFIG_IEEE80211R
879 union wpa_event_data data;
880 struct wpabuf *ric = NULL;
881 os_memset(&data, 0, sizeof(data));
882 data.ft_ies.ies = mgmt->u.auth.variable;
883 data.ft_ies.ies_len = len -
884 (mgmt->u.auth.variable - (u8 *) mgmt);
885 os_memcpy(data.ft_ies.target_ap, wpa_s->bssid, ETH_ALEN);
886 if (os_strcmp(wpa_s->driver->name, "test") == 0 &&
887 wpa_s->mlme.wmm_enabled) {
888 ric = wpabuf_alloc(200);
890 /* Build simple RIC-Request: RDIE | TSPEC */
892 /* RIC Data (RDIE) */
893 wpabuf_put_u8(ric, WLAN_EID_RIC_DATA);
894 wpabuf_put_u8(ric, 4);
895 wpabuf_put_u8(ric, 0); /* RDIE Identifier */
896 wpabuf_put_u8(ric, 1); /* Resource Descriptor
898 wpabuf_put_le16(ric, 0); /* Status Code */
901 ieee80211_build_tspec(ric);
903 data.ft_ies.ric_ies = wpabuf_head(ric);
904 data.ft_ies.ric_ies_len = wpabuf_len(ric);
908 wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &data);
910 ieee80211_auth_completed(wpa_s);
913 #endif /* CONFIG_IEEE80211R */
918 static void ieee80211_rx_mgmt_deauth(struct wpa_supplicant *wpa_s,
919 struct ieee80211_mgmt *mgmt,
921 struct ieee80211_rx_status *rx_status)
926 wpa_printf(MSG_DEBUG, "MLME: too short (%lu) deauthentication "
927 "frame received from " MACSTR " - ignored",
928 (unsigned long) len, MAC2STR(mgmt->sa));
932 if (os_memcmp(wpa_s->bssid, mgmt->sa, ETH_ALEN) != 0) {
933 wpa_printf(MSG_DEBUG, "MLME: deauthentication frame received "
934 "from unknown AP (SA=" MACSTR " BSSID=" MACSTR
936 MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid));
940 reason_code = le_to_host16(mgmt->u.deauth.reason_code);
942 wpa_printf(MSG_DEBUG, "MLME: RX deauthentication from " MACSTR
943 " (reason=%d)", MAC2STR(mgmt->sa), reason_code);
945 if (wpa_s->mlme.authenticated)
946 wpa_printf(MSG_DEBUG, "MLME: deauthenticated");
948 if (wpa_s->mlme.state == IEEE80211_AUTHENTICATE ||
949 wpa_s->mlme.state == IEEE80211_ASSOCIATE ||
950 wpa_s->mlme.state == IEEE80211_ASSOCIATED) {
951 wpa_s->mlme.state = IEEE80211_AUTHENTICATE;
952 ieee80211_reschedule_timer(wpa_s,
953 IEEE80211_RETRY_AUTH_INTERVAL);
956 ieee80211_set_associated(wpa_s, 0);
957 wpa_s->mlme.authenticated = 0;
961 static void ieee80211_rx_mgmt_disassoc(struct wpa_supplicant *wpa_s,
962 struct ieee80211_mgmt *mgmt,
964 struct ieee80211_rx_status *rx_status)
969 wpa_printf(MSG_DEBUG, "MLME: too short (%lu) disassociation "
970 "frame received from " MACSTR " - ignored",
971 (unsigned long) len, MAC2STR(mgmt->sa));
975 if (os_memcmp(wpa_s->bssid, mgmt->sa, ETH_ALEN) != 0) {
976 wpa_printf(MSG_DEBUG, "MLME: disassociation frame received "
977 "from unknown AP (SA=" MACSTR " BSSID=" MACSTR
979 MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid));
983 reason_code = le_to_host16(mgmt->u.disassoc.reason_code);
985 wpa_printf(MSG_DEBUG, "MLME: RX disassociation from " MACSTR
986 " (reason=%d)", MAC2STR(mgmt->sa), reason_code);
988 if (wpa_s->mlme.associated)
989 wpa_printf(MSG_DEBUG, "MLME: disassociated");
991 if (wpa_s->mlme.state == IEEE80211_ASSOCIATED) {
992 wpa_s->mlme.state = IEEE80211_ASSOCIATE;
993 ieee80211_reschedule_timer(wpa_s,
994 IEEE80211_RETRY_AUTH_INTERVAL);
997 ieee80211_set_associated(wpa_s, 0);
1001 static int ieee80211_ft_assoc_resp(struct wpa_supplicant *wpa_s,
1002 struct ieee802_11_elems *elems)
1004 #ifdef CONFIG_IEEE80211R
1005 const u8 *mobility_domain = NULL;
1006 const u8 *r0kh_id = NULL;
1007 size_t r0kh_id_len = 0;
1008 const u8 *r1kh_id = NULL;
1009 struct rsn_ftie *hdr;
1010 const u8 *pos, *end;
1012 if (elems->mdie && elems->mdie_len >= MOBILITY_DOMAIN_ID_LEN)
1013 mobility_domain = elems->mdie;
1014 if (elems->ftie && elems->ftie_len >= sizeof(struct rsn_ftie)) {
1015 end = elems->ftie + elems->ftie_len;
1016 hdr = (struct rsn_ftie *) elems->ftie;
1017 pos = (const u8 *) (hdr + 1);
1018 while (pos + 1 < end) {
1019 if (pos + 2 + pos[1] > end)
1021 if (pos[0] == FTIE_SUBELEM_R1KH_ID &&
1022 pos[1] == FT_R1KH_ID_LEN)
1024 else if (pos[0] == FTIE_SUBELEM_R0KH_ID &&
1025 pos[1] >= 1 && pos[1] <= FT_R0KH_ID_MAX_LEN) {
1027 r0kh_id_len = pos[1];
1032 return wpa_sm_set_ft_params(wpa_s->wpa, mobility_domain, r0kh_id,
1033 r0kh_id_len, r1kh_id);
1034 #else /* CONFIG_IEEE80211R */
1036 #endif /* CONFIG_IEEE80211R */
1040 static void ieee80211_build_tspec(struct wpabuf *buf)
1042 struct wmm_tspec_element *tspec;
1045 tspec = wpabuf_put(buf, sizeof(*tspec));
1046 tspec->eid = WLAN_EID_VENDOR_SPECIFIC;
1047 tspec->length = sizeof(*tspec) - 2;
1048 tspec->oui[0] = 0x00;
1049 tspec->oui[1] = 0x50;
1050 tspec->oui[2] = 0xf2;
1051 tspec->oui_type = 2;
1052 tspec->oui_subtype = 2;
1057 tspec->ts_info[0] = (tid << 1) |
1058 (WMM_TSPEC_DIRECTION_BI_DIRECTIONAL << 5) |
1060 tspec->ts_info[1] = up << 3;
1061 tspec->nominal_msdu_size = host_to_le16(1530);
1062 tspec->mean_data_rate = host_to_le32(128000); /* bits per second */
1063 tspec->minimum_phy_rate = host_to_le32(6000000);
1064 tspec->surplus_bandwidth_allowance = host_to_le16(0x3000); /* 150% */
1068 static void ieee80211_tx_addts(struct wpa_supplicant *wpa_s)
1071 struct ieee80211_mgmt *mgmt;
1074 wpa_printf(MSG_DEBUG, "MLME: Send ADDTS Request for Voice TSPEC");
1076 alen = mgmt->u.action.u.wmm_action.variable - (u8 *) mgmt;
1078 buf = wpabuf_alloc(alen + sizeof(struct wmm_tspec_element));
1082 mgmt = wpabuf_put(buf, alen);
1083 os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
1084 os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
1085 os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
1086 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1087 WLAN_FC_STYPE_ACTION);
1088 mgmt->u.action.category = WLAN_ACTION_WMM;
1089 mgmt->u.action.u.wmm_action.action_code = WMM_ACTION_CODE_ADDTS_REQ;
1090 mgmt->u.action.u.wmm_action.dialog_token = 1;
1091 mgmt->u.action.u.wmm_action.status_code = 0;
1093 ieee80211_build_tspec(buf);
1095 ieee80211_sta_tx(wpa_s, wpabuf_head(buf), wpabuf_len(buf));
1100 static void ieee80211_rx_mgmt_assoc_resp(struct wpa_supplicant *wpa_s,
1101 struct ieee80211_mgmt *mgmt,
1103 struct ieee80211_rx_status *rx_status,
1108 u16 capab_info, status_code, aid;
1109 struct ieee802_11_elems elems;
1112 /* AssocResp and ReassocResp have identical structure, so process both
1113 * of them in this function. */
1115 if (wpa_s->mlme.state != IEEE80211_ASSOCIATE) {
1116 wpa_printf(MSG_DEBUG, "MLME: association frame received from "
1117 MACSTR ", but not in associate state - ignored",
1123 wpa_printf(MSG_DEBUG, "MLME: too short (%lu) association "
1124 "frame received from " MACSTR " - ignored",
1125 (unsigned long) len, MAC2STR(mgmt->sa));
1129 if (os_memcmp(wpa_s->bssid, mgmt->sa, ETH_ALEN) != 0) {
1130 wpa_printf(MSG_DEBUG, "MLME: association frame received from "
1131 "unknown AP (SA=" MACSTR " BSSID=" MACSTR ") - "
1132 "ignored", MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid));
1136 capab_info = le_to_host16(mgmt->u.assoc_resp.capab_info);
1137 status_code = le_to_host16(mgmt->u.assoc_resp.status_code);
1138 aid = le_to_host16(mgmt->u.assoc_resp.aid);
1139 if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
1140 wpa_printf(MSG_DEBUG, "MLME: invalid aid value %d; bits 15:14 "
1142 aid &= ~(BIT(15) | BIT(14));
1144 wpa_printf(MSG_DEBUG, "MLME: RX %sssocResp from " MACSTR
1145 " (capab=0x%x status=%d aid=%d)",
1146 reassoc ? "Rea" : "A", MAC2STR(mgmt->sa),
1147 capab_info, status_code, aid);
1149 pos = mgmt->u.assoc_resp.variable;
1150 if (ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems, 0)
1152 wpa_printf(MSG_DEBUG, "MLME: failed to parse AssocResp");
1156 if (status_code != WLAN_STATUS_SUCCESS) {
1157 wpa_printf(MSG_DEBUG, "MLME: AP denied association (code=%d)",
1159 #ifdef CONFIG_IEEE80211W
1160 if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY &&
1161 elems.timeout_int && elems.timeout_int_len == 5 &&
1162 elems.timeout_int[0] == WLAN_TIMEOUT_ASSOC_COMEBACK) {
1164 tu = WPA_GET_LE32(elems.timeout_int + 1);
1165 ms = tu * 1024 / 1000;
1166 wpa_printf(MSG_DEBUG, "MLME: AP rejected association "
1167 "temporarily; comeback duration %u TU "
1169 if (ms > IEEE80211_ASSOC_TIMEOUT) {
1170 wpa_printf(MSG_DEBUG, "MLME: Update timer "
1171 "based on comeback duration");
1172 ieee80211_reschedule_timer(wpa_s, ms);
1175 #endif /* CONFIG_IEEE80211W */
1179 if (elems.supp_rates == NULL) {
1180 wpa_printf(MSG_DEBUG, "MLME: no SuppRates element in "
1185 if (wpa_s->mlme.auth_alg == WLAN_AUTH_FT) {
1187 wpa_printf(MSG_DEBUG, "MLME: AP tried to use "
1188 "association, not reassociation, response "
1192 if (wpa_ft_validate_reassoc_resp(
1193 wpa_s->wpa, pos, len - (pos - (u8 *) mgmt),
1195 wpa_printf(MSG_DEBUG, "MLME: FT validation of Reassoc"
1199 } else if (ieee80211_ft_assoc_resp(wpa_s, &elems) < 0)
1202 wpa_printf(MSG_DEBUG, "MLME: associated");
1203 wpa_s->mlme.aid = aid;
1204 wpa_s->mlme.ap_capab = capab_info;
1206 os_free(wpa_s->mlme.assocresp_ies);
1207 wpa_s->mlme.assocresp_ies_len = len - (pos - (u8 *) mgmt);
1208 wpa_s->mlme.assocresp_ies = os_malloc(wpa_s->mlme.assocresp_ies_len);
1209 if (wpa_s->mlme.assocresp_ies) {
1210 os_memcpy(wpa_s->mlme.assocresp_ies, pos,
1211 wpa_s->mlme.assocresp_ies_len);
1214 ieee80211_set_associated(wpa_s, 1);
1216 rates_len = elems.supp_rates_len;
1217 if (rates_len > sizeof(rates))
1218 rates_len = sizeof(rates);
1219 os_memcpy(rates, elems.supp_rates, rates_len);
1220 if (elems.ext_supp_rates) {
1221 size_t _len = elems.ext_supp_rates_len;
1222 if (_len > sizeof(rates) - rates_len)
1223 _len = sizeof(rates) - rates_len;
1224 os_memcpy(rates + rates_len, elems.ext_supp_rates, _len);
1228 if (wpa_drv_set_bssid(wpa_s, wpa_s->bssid) < 0) {
1229 wpa_printf(MSG_DEBUG, "MLME: failed to set BSSID for the "
1232 if (wpa_drv_set_ssid(wpa_s, wpa_s->mlme.ssid, wpa_s->mlme.ssid_len) <
1234 wpa_printf(MSG_DEBUG, "MLME: failed to set SSID for the "
1238 /* Remove STA entry before adding a new one just in case to avoid
1239 * problems with existing configuration (e.g., keys). */
1240 wpa_drv_mlme_remove_sta(wpa_s, wpa_s->bssid);
1241 if (wpa_drv_mlme_add_sta(wpa_s, wpa_s->bssid, rates, rates_len) < 0) {
1242 wpa_printf(MSG_DEBUG, "MLME: failed to add STA entry to the "
1246 if (elems.wmm && wpa_s->mlme.wmm_enabled)
1247 ieee80211_sta_wmm_params(wpa_s, elems.wmm, elems.wmm_len);
1249 ieee80211_associated(wpa_s);
1251 if (wpa_s->mlme.auth_alg != WLAN_AUTH_FT &&
1252 os_strcmp(wpa_s->driver->name, "test") == 0 &&
1253 elems.wmm && wpa_s->mlme.wmm_enabled) {
1254 /* Test WMM-AC - send ADDTS for WMM TSPEC */
1255 ieee80211_tx_addts(wpa_s);
1260 /* Caller must hold local->sta_bss_lock */
1261 static void __ieee80211_bss_hash_add(struct wpa_supplicant *wpa_s,
1262 struct ieee80211_sta_bss *bss)
1264 bss->hnext = wpa_s->mlme.sta_bss_hash[STA_HASH(bss->bssid)];
1265 wpa_s->mlme.sta_bss_hash[STA_HASH(bss->bssid)] = bss;
1269 /* Caller must hold local->sta_bss_lock */
1270 static void __ieee80211_bss_hash_del(struct wpa_supplicant *wpa_s,
1271 struct ieee80211_sta_bss *bss)
1273 struct ieee80211_sta_bss *b, *prev = NULL;
1274 b = wpa_s->mlme.sta_bss_hash[STA_HASH(bss->bssid)];
1278 wpa_s->mlme.sta_bss_hash[STA_HASH(bss->bssid)]
1281 prev->hnext = bss->hnext;
1291 static struct ieee80211_sta_bss *
1292 ieee80211_bss_add(struct wpa_supplicant *wpa_s, const u8 *bssid)
1294 struct ieee80211_sta_bss *bss;
1296 bss = os_zalloc(sizeof(*bss));
1299 os_memcpy(bss->bssid, bssid, ETH_ALEN);
1301 /* TODO: order by RSSI? */
1302 bss->next = wpa_s->mlme.sta_bss_list;
1303 wpa_s->mlme.sta_bss_list = bss;
1304 __ieee80211_bss_hash_add(wpa_s, bss);
1309 static struct ieee80211_sta_bss *
1310 ieee80211_bss_get(struct wpa_supplicant *wpa_s, const u8 *bssid)
1312 struct ieee80211_sta_bss *bss;
1314 bss = wpa_s->mlme.sta_bss_hash[STA_HASH(bssid)];
1316 if (os_memcmp(bss->bssid, bssid, ETH_ALEN) == 0)
1324 static void ieee80211_bss_free(struct wpa_supplicant *wpa_s,
1325 struct ieee80211_sta_bss *bss)
1327 __ieee80211_bss_hash_del(wpa_s, bss);
1329 os_free(bss->wpa_ie);
1330 os_free(bss->rsn_ie);
1331 os_free(bss->wmm_ie);
1337 static void ieee80211_bss_list_deinit(struct wpa_supplicant *wpa_s)
1339 struct ieee80211_sta_bss *bss, *prev;
1341 bss = wpa_s->mlme.sta_bss_list;
1342 wpa_s->mlme.sta_bss_list = NULL;
1346 ieee80211_bss_free(wpa_s, prev);
1351 static void ieee80211_bss_info(struct wpa_supplicant *wpa_s,
1352 struct ieee80211_mgmt *mgmt,
1354 struct ieee80211_rx_status *rx_status,
1357 struct ieee802_11_elems elems;
1359 int channel, invalid = 0, clen;
1360 struct ieee80211_sta_bss *bss;
1365 if (!beacon && os_memcmp(mgmt->da, wpa_s->own_addr, ETH_ALEN))
1366 return; /* ignore ProbeResp to foreign address */
1369 wpa_printf(MSG_MSGDUMP, "MLME: RX %s from " MACSTR " to " MACSTR,
1370 beacon ? "Beacon" : "Probe Response",
1371 MAC2STR(mgmt->sa), MAC2STR(mgmt->da));
1374 baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
1378 pos = mgmt->u.beacon.timestamp;
1379 timestamp = WPA_GET_LE64(pos);
1382 if (local->conf.mode == IW_MODE_ADHOC && beacon &&
1383 os_memcmp(mgmt->bssid, local->bssid, ETH_ALEN) == 0) {
1384 #ifdef IEEE80211_IBSS_DEBUG
1385 static unsigned long last_tsf_debug = 0;
1387 if (local->hw->get_tsf)
1388 tsf = local->hw->get_tsf(local->mdev);
1391 if (time_after(jiffies, last_tsf_debug + 5 * HZ)) {
1392 wpa_printf(MSG_DEBUG, "RX beacon SA=" MACSTR " BSSID="
1393 MACSTR " TSF=0x%llx BCN=0x%llx diff=%lld "
1395 MAC2STR(mgmt->sa), MAC2STR(mgmt->bssid),
1396 tsf, timestamp, tsf - timestamp, jiffies);
1397 last_tsf_debug = jiffies;
1399 #endif /* IEEE80211_IBSS_DEBUG */
1403 ie_pos = mgmt->u.beacon.variable;
1404 ie_len = len - baselen;
1405 if (ieee802_11_parse_elems(ie_pos, ie_len, &elems, 0) == ParseFailed)
1409 if (local->conf.mode == IW_MODE_ADHOC && elems.supp_rates &&
1410 os_memcmp(mgmt->bssid, local->bssid, ETH_ALEN) == 0 &&
1411 (sta = sta_info_get(local, mgmt->sa))) {
1412 struct ieee80211_rate *rates;
1414 u32 supp_rates, prev_rates;
1415 int i, j, oper_mode;
1417 rates = local->curr_rates;
1418 num_rates = local->num_curr_rates;
1419 oper_mode = wpa_s->mlme.sta_scanning ?
1420 local->scan_oper_phymode : local->conf.phymode;
1421 for (i = 0; i < local->hw->num_modes; i++) {
1422 struct ieee80211_hw_modes *mode = &local->hw->modes[i];
1423 if (oper_mode == mode->mode) {
1424 rates = mode->rates;
1425 num_rates = mode->num_rates;
1431 for (i = 0; i < elems.supp_rates_len +
1432 elems.ext_supp_rates_len; i++) {
1435 if (i < elems.supp_rates_len)
1436 rate = elems.supp_rates[i];
1437 else if (elems.ext_supp_rates)
1438 rate = elems.ext_supp_rates
1439 [i - elems.supp_rates_len];
1440 own_rate = 5 * (rate & 0x7f);
1441 if (oper_mode == MODE_ATHEROS_TURBO)
1443 for (j = 0; j < num_rates; j++)
1444 if (rates[j].rate == own_rate)
1445 supp_rates |= BIT(j);
1448 prev_rates = sta->supp_rates;
1449 sta->supp_rates &= supp_rates;
1450 if (sta->supp_rates == 0) {
1451 /* No matching rates - this should not really happen.
1452 * Make sure that at least one rate is marked
1453 * supported to avoid issues with TX rate ctrl. */
1454 sta->supp_rates = wpa_s->mlme.supp_rates_bits;
1456 if (sta->supp_rates != prev_rates) {
1457 wpa_printf(MSG_DEBUG, "MLME: updated supp_rates set "
1458 "for " MACSTR " based on beacon info "
1459 "(0x%x & 0x%x -> 0x%x)",
1460 MAC2STR(sta->addr), prev_rates,
1461 supp_rates, sta->supp_rates);
1463 sta_info_release(local, sta);
1467 if (elems.ssid == NULL)
1470 if (elems.ds_params && elems.ds_params_len == 1)
1471 channel = elems.ds_params[0];
1473 channel = rx_status->channel;
1475 bss = ieee80211_bss_get(wpa_s, mgmt->bssid);
1477 bss = ieee80211_bss_add(wpa_s, mgmt->bssid);
1482 /* TODO: order by RSSI? */
1483 spin_lock_bh(&local->sta_bss_lock);
1484 list_move_tail(&bss->list, &local->sta_bss_list);
1485 spin_unlock_bh(&local->sta_bss_lock);
1489 if (bss->probe_resp && beacon) {
1490 /* Do not allow beacon to override data from Probe Response. */
1494 bss->beacon_int = le_to_host16(mgmt->u.beacon.beacon_int);
1495 bss->capability = le_to_host16(mgmt->u.beacon.capab_info);
1497 if (bss->ie == NULL || bss->ie_len < ie_len) {
1499 bss->ie = os_malloc(ie_len);
1502 os_memcpy(bss->ie, ie_pos, ie_len);
1503 bss->ie_len = ie_len;
1506 if (elems.ssid && elems.ssid_len <= MAX_SSID_LEN) {
1507 os_memcpy(bss->ssid, elems.ssid, elems.ssid_len);
1508 bss->ssid_len = elems.ssid_len;
1511 bss->supp_rates_len = 0;
1512 if (elems.supp_rates) {
1513 clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
1514 if (clen > elems.supp_rates_len)
1515 clen = elems.supp_rates_len;
1516 os_memcpy(&bss->supp_rates[bss->supp_rates_len],
1517 elems.supp_rates, clen);
1518 bss->supp_rates_len += clen;
1520 if (elems.ext_supp_rates) {
1521 clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
1522 if (clen > elems.ext_supp_rates_len)
1523 clen = elems.ext_supp_rates_len;
1524 os_memcpy(&bss->supp_rates[bss->supp_rates_len],
1525 elems.ext_supp_rates, clen);
1526 bss->supp_rates_len += clen;
1530 (bss->wpa_ie == NULL || bss->wpa_ie_len != elems.wpa_ie_len ||
1531 os_memcmp(bss->wpa_ie, elems.wpa_ie, elems.wpa_ie_len))) {
1532 os_free(bss->wpa_ie);
1533 bss->wpa_ie = os_malloc(elems.wpa_ie_len + 2);
1535 os_memcpy(bss->wpa_ie, elems.wpa_ie - 2,
1536 elems.wpa_ie_len + 2);
1537 bss->wpa_ie_len = elems.wpa_ie_len + 2;
1539 bss->wpa_ie_len = 0;
1540 } else if (!elems.wpa_ie && bss->wpa_ie) {
1541 os_free(bss->wpa_ie);
1543 bss->wpa_ie_len = 0;
1547 (bss->rsn_ie == NULL || bss->rsn_ie_len != elems.rsn_ie_len ||
1548 os_memcmp(bss->rsn_ie, elems.rsn_ie, elems.rsn_ie_len))) {
1549 os_free(bss->rsn_ie);
1550 bss->rsn_ie = os_malloc(elems.rsn_ie_len + 2);
1552 os_memcpy(bss->rsn_ie, elems.rsn_ie - 2,
1553 elems.rsn_ie_len + 2);
1554 bss->rsn_ie_len = elems.rsn_ie_len + 2;
1556 bss->rsn_ie_len = 0;
1557 } else if (!elems.rsn_ie && bss->rsn_ie) {
1558 os_free(bss->rsn_ie);
1560 bss->rsn_ie_len = 0;
1564 (bss->wmm_ie == NULL || bss->wmm_ie_len != elems.wmm_len ||
1565 os_memcmp(bss->wmm_ie, elems.wmm, elems.wmm_len))) {
1566 os_free(bss->wmm_ie);
1567 bss->wmm_ie = os_malloc(elems.wmm_len + 2);
1569 os_memcpy(bss->wmm_ie, elems.wmm - 2,
1571 bss->wmm_ie_len = elems.wmm_len + 2;
1573 bss->wmm_ie_len = 0;
1574 } else if (!elems.wmm && bss->wmm_ie) {
1575 os_free(bss->wmm_ie);
1577 bss->wmm_ie_len = 0;
1580 #ifdef CONFIG_IEEE80211R
1582 (bss->mdie == NULL || bss->mdie_len != elems.mdie_len ||
1583 os_memcmp(bss->mdie, elems.mdie, elems.mdie_len))) {
1585 bss->mdie = os_malloc(elems.mdie_len + 2);
1587 os_memcpy(bss->mdie, elems.mdie - 2,
1588 elems.mdie_len + 2);
1589 bss->mdie_len = elems.mdie_len + 2;
1592 } else if (!elems.mdie && bss->mdie) {
1597 #endif /* CONFIG_IEEE80211R */
1599 bss->hw_mode = wpa_s->mlme.phymode;
1600 bss->channel = channel;
1601 bss->freq = wpa_s->mlme.freq;
1602 if (channel != wpa_s->mlme.channel &&
1603 (wpa_s->mlme.phymode == WPA_MODE_IEEE80211G ||
1604 wpa_s->mlme.phymode == WPA_MODE_IEEE80211B) &&
1605 channel >= 1 && channel <= 14) {
1606 static const int freq_list[] = {
1607 2412, 2417, 2422, 2427, 2432, 2437, 2442,
1608 2447, 2452, 2457, 2462, 2467, 2472, 2484
1610 /* IEEE 802.11g/b mode can receive packets from neighboring
1611 * channels, so map the channel into frequency. */
1612 bss->freq = freq_list[channel - 1];
1614 bss->timestamp = timestamp;
1615 os_get_time(&bss->last_update);
1616 bss->rssi = rx_status->ssi;
1622 static void ieee80211_rx_mgmt_probe_resp(struct wpa_supplicant *wpa_s,
1623 struct ieee80211_mgmt *mgmt,
1625 struct ieee80211_rx_status *rx_status)
1627 ieee80211_bss_info(wpa_s, mgmt, len, rx_status, 0);
1631 static void ieee80211_rx_mgmt_beacon(struct wpa_supplicant *wpa_s,
1632 struct ieee80211_mgmt *mgmt,
1634 struct ieee80211_rx_status *rx_status)
1638 struct ieee802_11_elems elems;
1640 ieee80211_bss_info(wpa_s, mgmt, len, rx_status, 1);
1642 if (!wpa_s->mlme.associated ||
1643 os_memcmp(wpa_s->bssid, mgmt->bssid, ETH_ALEN) != 0)
1646 /* Process beacon from the current BSS */
1647 baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
1651 if (ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen,
1652 &elems, 0) == ParseFailed)
1656 if (elems.erp_info && elems.erp_info_len >= 1) {
1658 (elems.erp_info[0] & ERP_INFO_USE_PROTECTION) != 0;
1661 if (use_protection != !!wpa_s->mlme.use_protection) {
1662 wpa_printf(MSG_DEBUG, "MLME: CTS protection %s (BSSID=" MACSTR
1664 use_protection ? "enabled" : "disabled",
1665 MAC2STR(wpa_s->bssid));
1666 wpa_s->mlme.use_protection = use_protection ? 1 : 0;
1667 wpa_s->mlme.cts_protect_erp_frames = use_protection;
1670 if (elems.wmm && wpa_s->mlme.wmm_enabled) {
1671 ieee80211_sta_wmm_params(wpa_s, elems.wmm,
1677 static void ieee80211_rx_mgmt_probe_req(struct wpa_supplicant *wpa_s,
1678 struct ieee80211_mgmt *mgmt,
1680 struct ieee80211_rx_status *rx_status)
1682 int tx_last_beacon, adhoc;
1684 struct ieee80211_mgmt *resp;
1687 struct wpa_ssid *ssid = wpa_s->current_ssid;
1689 adhoc = ssid && ssid->mode == 1;
1691 if (!adhoc || wpa_s->mlme.state != IEEE80211_IBSS_JOINED ||
1692 len < 24 + 2 || wpa_s->mlme.probe_resp == NULL)
1696 if (local->hw->tx_last_beacon)
1697 tx_last_beacon = local->hw->tx_last_beacon(local->mdev);
1702 #ifdef IEEE80211_IBSS_DEBUG
1703 wpa_printf(MSG_DEBUG, "MLME: RX ProbeReq SA=" MACSTR " DA=" MACSTR
1704 " BSSID=" MACSTR " (tx_last_beacon=%d)",
1705 MAC2STR(mgmt->sa), MAC2STR(mgmt->da),
1706 MAC2STR(mgmt->bssid), tx_last_beacon);
1707 #endif /* IEEE80211_IBSS_DEBUG */
1709 if (!tx_last_beacon)
1712 if (os_memcmp(mgmt->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
1713 os_memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
1716 end = ((u8 *) mgmt) + len;
1717 pos = mgmt->u.probe_req.variable;
1718 if (pos[0] != WLAN_EID_SSID ||
1719 pos + 2 + pos[1] > end) {
1720 wpa_printf(MSG_DEBUG, "MLME: Invalid SSID IE in ProbeReq from "
1721 MACSTR, MAC2STR(mgmt->sa));
1725 (pos[1] != wpa_s->mlme.ssid_len ||
1726 os_memcmp(pos + 2, wpa_s->mlme.ssid, wpa_s->mlme.ssid_len) != 0))
1728 /* Ignore ProbeReq for foreign SSID */
1733 /* Reply with ProbeResp */
1734 skb = skb_copy(wpa_s->mlme.probe_resp, GFP_ATOMIC);
1738 resp = (struct ieee80211_mgmt *) skb->data;
1739 os_memcpy(resp->da, mgmt->sa, ETH_ALEN);
1740 #ifdef IEEE80211_IBSS_DEBUG
1741 wpa_printf(MSG_DEBUG, "MLME: Sending ProbeResp to " MACSTR,
1743 #endif /* IEEE80211_IBSS_DEBUG */
1744 ieee80211_sta_tx(wpa_s, skb, 0, 1);
1749 #ifdef CONFIG_IEEE80211R
1750 static void ieee80211_rx_mgmt_ft_action(struct wpa_supplicant *wpa_s,
1751 struct ieee80211_mgmt *mgmt,
1753 struct ieee80211_rx_status *rx_status)
1755 union wpa_event_data data;
1757 u8 *sta_addr, *target_ap_addr;
1759 if (len < 24 + 1 + sizeof(mgmt->u.action.u.ft_action_resp)) {
1760 wpa_printf(MSG_DEBUG, "MLME: Too short FT Action frame");
1765 * Only FT Action Response is needed for now since reservation
1766 * protocol is not supported.
1768 if (mgmt->u.action.u.ft_action_resp.action != 2) {
1769 wpa_printf(MSG_DEBUG, "MLME: Unexpected FT Action %d",
1770 mgmt->u.action.u.ft_action_resp.action);
1774 status = le_to_host16(mgmt->u.action.u.ft_action_resp.status_code);
1775 sta_addr = mgmt->u.action.u.ft_action_resp.sta_addr;
1776 target_ap_addr = mgmt->u.action.u.ft_action_resp.target_ap_addr;
1777 wpa_printf(MSG_DEBUG, "MLME: Received FT Action Response: STA " MACSTR
1778 " TargetAP " MACSTR " Status Code %d",
1779 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
1780 if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
1781 wpa_printf(MSG_DEBUG, "MLME: Foreign STA Address " MACSTR
1782 " 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;
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 os_memcpy(wpa_s->bssid, bss->bssid, ETH_ALEN);
2271 local->conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10;
2273 sdata->drop_unencrypted = bss->capability &
2274 host_to_le16(WLAN_CAPABILITY_PRIVACY) ? 1 : 0;
2278 os_memset(&rq, 0, sizeof(rq));
2279 rq.m = bss->freq * 100000;
2281 res = ieee80211_ioctl_siwfreq(wpa_s, NULL, &rq, NULL);
2284 if (!ieee80211_ibss_allowed(wpa_s)) {
2286 wpa_printf(MSG_DEBUG, "MLME: IBSS not allowed on channel %d "
2287 "(%d MHz)", local->conf.channel,
2293 /* Set beacon template based on scan results */
2294 buf = os_malloc(400);
2300 mgmt = (struct ieee80211_mgmt *) buf;
2301 len += 24 + sizeof(mgmt->u.beacon);
2302 os_memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon));
2303 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
2304 WLAN_FC_STYPE_BEACON);
2305 os_memset(mgmt->da, 0xff, ETH_ALEN);
2306 os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
2307 os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
2309 mgmt->u.beacon.beacon_int =
2310 host_to_le16(local->conf.beacon_int);
2312 mgmt->u.beacon.capab_info = host_to_le16(bss->capability);
2315 len += 2 + wpa_s->mlme.ssid_len;
2316 *pos++ = WLAN_EID_SSID;
2317 *pos++ = wpa_s->mlme.ssid_len;
2318 os_memcpy(pos, wpa_s->mlme.ssid, wpa_s->mlme.ssid_len);
2320 rates = bss->supp_rates_len;
2325 *pos++ = WLAN_EID_SUPP_RATES;
2327 os_memcpy(pos, bss->supp_rates, rates);
2331 *pos++ = WLAN_EID_DS_PARAMS;
2333 *pos++ = bss->channel;
2337 *pos++ = WLAN_EID_IBSS_PARAMS;
2339 /* FIX: set ATIM window based on scan results */
2343 if (bss->supp_rates_len > 8) {
2344 rates = bss->supp_rates_len - 8;
2347 *pos++ = WLAN_EID_EXT_SUPP_RATES;
2349 os_memcpy(pos, &bss->supp_rates[8], rates);
2353 os_memset(&control, 0, sizeof(control));
2354 control.pkt_type = PKT_PROBE_RESP;
2355 os_memset(&extra, 0, sizeof(extra));
2356 extra.endidx = local->num_curr_rates;
2357 rate = rate_control_get_rate(wpa_s, skb, &extra);
2359 wpa_printf(MSG_DEBUG, "MLME: Failed to determine TX "
2360 "rate for IBSS beacon");
2363 control.tx_rate = (wpa_s->mlme.short_preamble &&
2364 (rate->flags & IEEE80211_RATE_PREAMBLE2)) ?
2365 rate->val2 : rate->val;
2366 control.antenna_sel = local->conf.antenna_sel;
2367 control.power_level = local->conf.power_level;
2369 control.retry_limit = 1;
2370 control.rts_cts_duration = 0;
2374 wpa_s->mlme.probe_resp = skb_copy(skb, GFP_ATOMIC);
2375 if (wpa_s->mlme.probe_resp) {
2376 mgmt = (struct ieee80211_mgmt *)
2377 wpa_s->mlme.probe_resp->data;
2378 mgmt->frame_control =
2379 IEEE80211_FC(WLAN_FC_TYPE_MGMT,
2380 WLAN_FC_STYPE_PROBE_RESP);
2382 wpa_printf(MSG_DEBUG, "MLME: Could not allocate "
2383 "ProbeResp template for IBSS");
2386 if (local->hw->beacon_update &&
2387 local->hw->beacon_update(wpa_s, skb, &control) == 0) {
2388 wpa_printf(MSG_DEBUG, "MLME: Configured IBSS beacon "
2389 "template based on scan results");
2394 for (i = 0; i < bss->supp_rates_len; i++) {
2395 int rate = (bss->supp_rates[i] & 0x7f) * 5;
2396 if (local->conf.phymode == MODE_ATHEROS_TURBO)
2398 for (j = 0; j < local->num_curr_rates; j++)
2399 if (local->curr_rates[j].rate == rate)
2402 wpa_s->mlme.supp_rates_bits = rates;
2409 wpa_printf(MSG_DEBUG, "MLME: Failed to configure IBSS beacon "
2413 wpa_s->mlme.state = IEEE80211_IBSS_JOINED;
2414 ieee80211_reschedule_timer(wpa_s, IEEE80211_IBSS_MERGE_INTERVAL);
2421 static int ieee80211_sta_create_ibss(struct wpa_supplicant *wpa_s)
2423 struct ieee80211_sta_bss *bss;
2424 u8 bssid[ETH_ALEN], *pos;
2428 /* Easier testing, use fixed BSSID. */
2429 os_memset(bssid, 0xfe, ETH_ALEN);
2431 /* Generate random, not broadcast, locally administered BSSID. Mix in
2432 * own MAC address to make sure that devices that do not have proper
2433 * random number generator get different BSSID. */
2434 os_get_random(bssid, ETH_ALEN);
2435 for (i = 0; i < ETH_ALEN; i++)
2436 bssid[i] ^= wpa_s->own_addr[i];
2441 wpa_printf(MSG_DEBUG, "MLME: Creating new IBSS network, BSSID "
2442 MACSTR "", MAC2STR(bssid));
2444 bss = ieee80211_bss_add(wpa_s, bssid);
2449 if (local->conf.beacon_int == 0)
2450 local->conf.beacon_int = 100;
2451 bss->beacon_int = local->conf.beacon_int;
2452 bss->hw_mode = local->conf.phymode;
2453 bss->channel = local->conf.channel;
2454 bss->freq = local->conf.freq;
2456 os_get_time(&bss->last_update);
2457 bss->capability = host_to_le16(WLAN_CAPABILITY_IBSS);
2459 if (sdata->default_key) {
2460 bss->capability |= host_to_le16(WLAN_CAPABILITY_PRIVACY);
2462 sdata->drop_unencrypted = 0;
2463 bss->supp_rates_len = local->num_curr_rates;
2465 pos = bss->supp_rates;
2467 for (i = 0; i < local->num_curr_rates; i++) {
2468 int rate = local->curr_rates[i].rate;
2469 if (local->conf.phymode == MODE_ATHEROS_TURBO)
2471 *pos++ = (u8) (rate / 5);
2475 return ieee80211_sta_join_ibss(wpa_s, bss);
2480 static int ieee80211_sta_find_ibss(struct wpa_supplicant *wpa_s)
2482 struct ieee80211_sta_bss *bss;
2488 if (wpa_s->mlme.ssid_len == 0)
2491 active_ibss = ieee80211_sta_active_ibss(wpa_s);
2492 #ifdef IEEE80211_IBSS_DEBUG
2493 wpa_printf(MSG_DEBUG, "MLME: sta_find_ibss (active_ibss=%d)",
2495 #endif /* IEEE80211_IBSS_DEBUG */
2496 for (bss = wpa_s->mlme.sta_bss_list; bss; bss = bss->next) {
2497 if (wpa_s->mlme.ssid_len != bss->ssid_len ||
2498 os_memcmp(wpa_s->mlme.ssid, bss->ssid, bss->ssid_len) != 0
2499 || !(bss->capability & WLAN_CAPABILITY_IBSS))
2501 #ifdef IEEE80211_IBSS_DEBUG
2502 wpa_printf(MSG_DEBUG, " bssid=" MACSTR " found",
2503 MAC2STR(bss->bssid));
2504 #endif /* IEEE80211_IBSS_DEBUG */
2505 os_memcpy(bssid, bss->bssid, ETH_ALEN);
2508 os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0)
2512 #ifdef IEEE80211_IBSS_DEBUG
2513 wpa_printf(MSG_DEBUG, " sta_find_ibss: selected " MACSTR " current "
2514 MACSTR, MAC2STR(bssid), MAC2STR(wpa_s->bssid));
2515 #endif /* IEEE80211_IBSS_DEBUG */
2516 if (found && os_memcmp(wpa_s->bssid, bssid, ETH_ALEN) != 0 &&
2517 (bss = ieee80211_bss_get(wpa_s, bssid))) {
2518 wpa_printf(MSG_DEBUG, "MLME: Selected IBSS BSSID " MACSTR
2519 " based on configured SSID",
2521 return ieee80211_sta_join_ibss(wpa_s, bss);
2523 #ifdef IEEE80211_IBSS_DEBUG
2524 wpa_printf(MSG_DEBUG, " did not try to join ibss");
2525 #endif /* IEEE80211_IBSS_DEBUG */
2527 /* Selected IBSS not found in current scan results - try to scan */
2530 if (wpa_s->mlme.state == IEEE80211_IBSS_JOINED &&
2531 !ieee80211_sta_active_ibss(wpa_s)) {
2532 ieee80211_reschedule_timer(wpa_s,
2533 IEEE80211_IBSS_MERGE_INTERVAL);
2534 } else if (time_after(jiffies, wpa_s->mlme.last_scan_completed +
2535 IEEE80211_SCAN_INTERVAL)) {
2536 wpa_printf(MSG_DEBUG, "MLME: Trigger new scan to find an IBSS "
2538 return ieee80211_sta_req_scan(wpa_s->mlme.ssid,
2539 wpa_s->mlme.ssid_len);
2540 } else if (wpa_s->mlme.state != IEEE80211_IBSS_JOINED) {
2541 int interval = IEEE80211_SCAN_INTERVAL;
2543 if (time_after(jiffies, wpa_s->mlme.ibss_join_req +
2544 IEEE80211_IBSS_JOIN_TIMEOUT)) {
2545 if (wpa_s->mlme.create_ibss &&
2546 ieee80211_ibss_allowed(wpa_s))
2547 return ieee80211_sta_create_ibss(wpa_s);
2548 if (wpa_s->mlme.create_ibss) {
2549 wpa_printf(MSG_DEBUG, "MLME: IBSS not allowed "
2550 "on the configured channel %d "
2552 local->conf.channel,
2556 /* No IBSS found - decrease scan interval and continue
2558 interval = IEEE80211_SCAN_INTERVAL_SLOW;
2561 wpa_s->mlme.state = IEEE80211_IBSS_SEARCH;
2562 ieee80211_reschedule_timer(wpa_s, interval);
2571 int ieee80211_sta_get_ssid(struct wpa_supplicant *wpa_s, u8 *ssid,
2574 os_memcpy(ssid, wpa_s->mlme.ssid, wpa_s->mlme.ssid_len);
2575 *len = wpa_s->mlme.ssid_len;
2580 int ieee80211_sta_associate(struct wpa_supplicant *wpa_s,
2581 struct wpa_driver_associate_params *params)
2583 struct ieee80211_sta_bss *bss;
2585 wpa_s->mlme.bssid_set = 0;
2586 wpa_s->mlme.freq = params->freq;
2587 if (params->bssid) {
2588 os_memcpy(wpa_s->bssid, params->bssid, ETH_ALEN);
2589 if (!is_zero_ether_addr(params->bssid))
2590 wpa_s->mlme.bssid_set = 1;
2591 bss = ieee80211_bss_get(wpa_s, wpa_s->bssid);
2593 wpa_s->mlme.phymode = bss->hw_mode;
2594 wpa_s->mlme.channel = bss->channel;
2595 wpa_s->mlme.freq = bss->freq;
2600 /* TODO: This should always be done for IBSS, even if IEEE80211_QOS is
2602 if (local->hw->conf_tx) {
2603 struct ieee80211_tx_queue_params qparam;
2606 os_memset(&qparam, 0, sizeof(qparam));
2607 /* TODO: are these ok defaults for all hw_modes? */
2610 local->conf.phymode == MODE_IEEE80211B ? 31 : 15;
2611 qparam.cw_max = 1023;
2612 qparam.burst_time = 0;
2613 for (i = IEEE80211_TX_QUEUE_DATA0; i < NUM_TX_DATA_QUEUES; i++)
2615 local->hw->conf_tx(wpa_s, i + IEEE80211_TX_QUEUE_DATA0,
2618 /* IBSS uses different parameters for Beacon sending */
2622 local->hw->conf_tx(wpa_s, IEEE80211_TX_QUEUE_BEACON, &qparam);
2626 if (wpa_s->mlme.ssid_len != params->ssid_len ||
2627 os_memcmp(wpa_s->mlme.ssid, params->ssid, params->ssid_len) != 0)
2628 wpa_s->mlme.prev_bssid_set = 0;
2629 os_memcpy(wpa_s->mlme.ssid, params->ssid, params->ssid_len);
2630 os_memset(wpa_s->mlme.ssid + params->ssid_len, 0,
2631 MAX_SSID_LEN - params->ssid_len);
2632 wpa_s->mlme.ssid_len = params->ssid_len;
2633 wpa_s->mlme.ssid_set = 1;
2635 os_free(wpa_s->mlme.extra_ie);
2636 if (params->wpa_ie == NULL || params->wpa_ie_len == 0) {
2637 wpa_s->mlme.extra_ie = NULL;
2638 wpa_s->mlme.extra_ie_len = 0;
2640 wpa_s->mlme.extra_ie = os_malloc(params->wpa_ie_len);
2641 if (wpa_s->mlme.extra_ie == NULL) {
2642 wpa_s->mlme.extra_ie_len = 0;
2645 os_memcpy(wpa_s->mlme.extra_ie, params->wpa_ie,
2646 params->wpa_ie_len);
2647 wpa_s->mlme.extra_ie_len = params->wpa_ie_len;
2650 wpa_s->mlme.key_mgmt = params->key_mgmt_suite;
2652 ieee80211_sta_set_channel(wpa_s, wpa_s->mlme.phymode,
2653 wpa_s->mlme.channel, wpa_s->mlme.freq);
2655 if (params->mode == 1 && !wpa_s->mlme.bssid_set) {
2656 os_get_time(&wpa_s->mlme.ibss_join_req);
2657 wpa_s->mlme.state = IEEE80211_IBSS_SEARCH;
2658 return ieee80211_sta_find_ibss(wpa_s);
2661 if (wpa_s->mlme.bssid_set)
2662 ieee80211_sta_new_auth(wpa_s);
2668 static void ieee80211_sta_save_oper_chan(struct wpa_supplicant *wpa_s)
2670 wpa_s->mlme.scan_oper_channel = wpa_s->mlme.channel;
2671 wpa_s->mlme.scan_oper_freq = wpa_s->mlme.freq;
2672 wpa_s->mlme.scan_oper_phymode = wpa_s->mlme.phymode;
2676 static int ieee80211_sta_restore_oper_chan(struct wpa_supplicant *wpa_s)
2678 wpa_s->mlme.channel = wpa_s->mlme.scan_oper_channel;
2679 wpa_s->mlme.freq = wpa_s->mlme.scan_oper_freq;
2680 wpa_s->mlme.phymode = wpa_s->mlme.scan_oper_phymode;
2681 if (wpa_s->mlme.freq == 0)
2683 return ieee80211_sta_set_channel(wpa_s, wpa_s->mlme.phymode,
2684 wpa_s->mlme.channel,
2689 static int ieee80211_active_scan(struct wpa_supplicant *wpa_s)
2694 for (m = 0; m < wpa_s->mlme.num_modes; m++) {
2695 struct wpa_hw_modes *mode = &wpa_s->mlme.modes[m];
2696 if ((int) mode->mode != (int) wpa_s->mlme.phymode)
2698 for (c = 0; c < mode->num_channels; c++) {
2699 struct wpa_channel_data *chan = &mode->channels[c];
2700 if (chan->flag & WPA_CHAN_W_SCAN &&
2701 chan->chan == wpa_s->mlme.channel) {
2702 if (chan->flag & WPA_CHAN_W_ACTIVE_SCAN)
2713 static void ieee80211_sta_scan_timer(void *eloop_ctx, void *timeout_ctx)
2715 struct wpa_supplicant *wpa_s = eloop_ctx;
2716 struct wpa_hw_modes *mode;
2717 struct wpa_channel_data *chan;
2720 struct wpa_ssid *ssid = wpa_s->current_ssid;
2723 if (!wpa_s->mlme.sta_scanning || wpa_s->mlme.modes == NULL)
2726 adhoc = ssid && ssid->mode == 1;
2728 switch (wpa_s->mlme.scan_state) {
2729 case SCAN_SET_CHANNEL:
2730 mode = &wpa_s->mlme.modes[wpa_s->mlme.scan_hw_mode_idx];
2731 if (wpa_s->mlme.scan_hw_mode_idx >=
2732 (int) wpa_s->mlme.num_modes ||
2733 (wpa_s->mlme.scan_hw_mode_idx + 1 ==
2734 (int) wpa_s->mlme.num_modes
2735 && wpa_s->mlme.scan_channel_idx >= mode->num_channels)) {
2736 if (ieee80211_sta_restore_oper_chan(wpa_s)) {
2737 wpa_printf(MSG_DEBUG, "MLME: failed to "
2738 "restore operational channel after "
2741 wpa_printf(MSG_DEBUG, "MLME: scan completed");
2742 wpa_s->mlme.sta_scanning = 0;
2743 os_get_time(&wpa_s->mlme.last_scan_completed);
2744 wpa_supplicant_event(wpa_s, EVENT_SCAN_RESULTS, NULL);
2746 if (!wpa_s->mlme.bssid_set ||
2747 (wpa_s->mlme.state ==
2748 IEEE80211_IBSS_JOINED &&
2749 !ieee80211_sta_active_ibss(wpa_s)))
2750 ieee80211_sta_find_ibss(wpa_s);
2754 skip = !(wpa_s->mlme.hw_modes & (1 << mode->mode));
2755 chan = &mode->channels[wpa_s->mlme.scan_channel_idx];
2756 if (!(chan->flag & WPA_CHAN_W_SCAN) ||
2757 (adhoc && !(chan->flag & WPA_CHAN_W_IBSS)) ||
2758 (wpa_s->mlme.hw_modes & (1 << WPA_MODE_IEEE80211G) &&
2759 mode->mode == WPA_MODE_IEEE80211B &&
2760 wpa_s->mlme.scan_skip_11b))
2764 wpa_printf(MSG_MSGDUMP,
2765 "MLME: scan channel %d (%d MHz)",
2766 chan->chan, chan->freq);
2768 wpa_s->mlme.channel = chan->chan;
2769 wpa_s->mlme.freq = chan->freq;
2770 wpa_s->mlme.phymode = mode->mode;
2771 if (ieee80211_sta_set_channel(wpa_s, mode->mode,
2772 chan->chan, chan->freq))
2774 wpa_printf(MSG_DEBUG, "MLME: failed to set "
2775 "channel %d (%d MHz) for scan",
2776 chan->chan, chan->freq);
2781 wpa_s->mlme.scan_channel_idx++;
2782 if (wpa_s->mlme.scan_channel_idx >=
2783 wpa_s->mlme.modes[wpa_s->mlme.scan_hw_mode_idx].
2785 wpa_s->mlme.scan_hw_mode_idx++;
2786 wpa_s->mlme.scan_channel_idx = 0;
2794 timeout = IEEE80211_PROBE_DELAY;
2795 wpa_s->mlme.scan_state = SCAN_SEND_PROBE;
2797 case SCAN_SEND_PROBE:
2798 if (ieee80211_active_scan(wpa_s)) {
2799 ieee80211_send_probe_req(wpa_s, NULL,
2800 wpa_s->mlme.scan_ssid,
2801 wpa_s->mlme.scan_ssid_len);
2802 timeout = IEEE80211_CHANNEL_TIME;
2804 timeout = IEEE80211_PASSIVE_CHANNEL_TIME;
2806 wpa_s->mlme.scan_state = SCAN_SET_CHANNEL;
2810 eloop_register_timeout(timeout / 1000, 1000 * (timeout % 1000),
2811 ieee80211_sta_scan_timer, wpa_s, NULL);
2815 int ieee80211_sta_req_scan(struct wpa_supplicant *wpa_s, const u8 *ssid,
2818 if (ssid_len > MAX_SSID_LEN)
2821 /* MLME-SCAN.request (page 118) page 144 (11.1.3.1)
2822 * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS
2825 * ScanType: ACTIVE, PASSIVE
2826 * ProbeDelay: delay (in microseconds) to be used prior to transmitting
2827 * a Probe frame during active scanning
2829 * MinChannelTime (>= ProbeDelay), in TU
2830 * MaxChannelTime: (>= MinChannelTime), in TU
2833 /* MLME-SCAN.confirm
2835 * ResultCode: SUCCESS, INVALID_PARAMETERS
2838 /* TODO: if assoc, move to power save mode for the duration of the
2841 if (wpa_s->mlme.sta_scanning)
2844 wpa_printf(MSG_DEBUG, "MLME: starting scan");
2846 ieee80211_sta_save_oper_chan(wpa_s);
2848 wpa_s->mlme.sta_scanning = 1;
2849 /* TODO: stop TX queue? */
2852 wpa_s->mlme.scan_ssid_len = ssid_len;
2853 os_memcpy(wpa_s->mlme.scan_ssid, ssid, ssid_len);
2855 wpa_s->mlme.scan_ssid_len = 0;
2856 wpa_s->mlme.scan_skip_11b = 1; /* FIX: clear this is 11g is not
2858 wpa_s->mlme.scan_state = SCAN_SET_CHANNEL;
2859 wpa_s->mlme.scan_hw_mode_idx = 0;
2860 wpa_s->mlme.scan_channel_idx = 0;
2861 eloop_register_timeout(0, 1, ieee80211_sta_scan_timer, wpa_s, NULL);
2867 struct wpa_scan_results *
2868 ieee80211_sta_get_scan_results(struct wpa_supplicant *wpa_s)
2871 struct wpa_scan_results *res;
2872 struct wpa_scan_res *r;
2873 struct ieee80211_sta_bss *bss;
2875 res = os_zalloc(sizeof(*res));
2876 for (bss = wpa_s->mlme.sta_bss_list; bss; bss = bss->next)
2878 res->res = os_zalloc(ap_num * sizeof(struct wpa_scan_res *));
2879 if (res->res == NULL) {
2884 for (bss = wpa_s->mlme.sta_bss_list; bss; bss = bss->next) {
2885 r = os_zalloc(sizeof(*r) + bss->ie_len);
2888 os_memcpy(r->bssid, bss->bssid, ETH_ALEN);
2889 r->freq = bss->freq;
2890 r->beacon_int = bss->beacon_int;
2891 r->caps = bss->capability;
2892 r->level = bss->rssi;
2893 r->tsf = bss->timestamp;
2895 r->ie_len = bss->ie_len;
2896 os_memcpy(r + 1, bss->ie, bss->ie_len);
2899 res->res[res->num++] = r;
2907 struct sta_info * ieee80211_ibss_add_sta(struct wpa_supplicant *wpa_s,
2908 struct sk_buff *skb, u8 *bssid,
2911 struct ieee80211_local *local = dev->priv;
2912 struct list_head *ptr;
2913 struct sta_info *sta;
2914 struct wpa_supplicant *sta_dev = NULL;
2916 /* TODO: Could consider removing the least recently used entry and
2917 * allow new one to be added. */
2918 if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) {
2919 if (net_ratelimit()) {
2920 wpa_printf(MSG_DEBUG, "MLME: No room for a new IBSS "
2921 "STA entry " MACSTR, MAC2STR(addr));
2926 spin_lock_bh(&local->sub_if_lock);
2927 list_for_each(ptr, &local->sub_if_list) {
2928 sdata = list_entry(ptr, struct ieee80211_sub_if_data, list);
2929 if (sdata->type == IEEE80211_SUB_IF_TYPE_STA &&
2930 os_memcmp(bssid, sdata->u.sta.bssid, ETH_ALEN) == 0) {
2931 sta_dev = sdata->dev;
2935 spin_unlock_bh(&local->sub_if_lock);
2937 if (sta_dev == NULL)
2940 wpa_printf(MSG_DEBUG, "MLME: Adding new IBSS station " MACSTR
2941 " (dev=%s)", MAC2STR(addr), sta_dev->name);
2943 sta = sta_info_add(wpa_s, addr);
2949 sta->supp_rates = wpa_s->mlme.supp_rates_bits;
2951 rate_control_rate_init(local, sta);
2953 return sta; /* caller will call sta_info_release() */
2958 int ieee80211_sta_deauthenticate(struct wpa_supplicant *wpa_s, u16 reason)
2960 wpa_printf(MSG_DEBUG, "MLME: deauthenticate(reason=%d)", reason);
2962 ieee80211_send_deauth(wpa_s, reason);
2963 ieee80211_set_associated(wpa_s, 0);
2968 int ieee80211_sta_disassociate(struct wpa_supplicant *wpa_s, u16 reason)
2970 wpa_printf(MSG_DEBUG, "MLME: disassociate(reason=%d)", reason);
2972 if (!wpa_s->mlme.associated)
2975 ieee80211_send_disassoc(wpa_s, reason);
2976 ieee80211_set_associated(wpa_s, 0);
2981 void ieee80211_sta_rx(struct wpa_supplicant *wpa_s, const u8 *buf, size_t len,
2982 struct ieee80211_rx_status *rx_status)
2984 struct ieee80211_mgmt *mgmt;
2988 /* wpa_hexdump(MSG_MSGDUMP, "MLME: Received frame", buf, len); */
2990 if (wpa_s->mlme.sta_scanning) {
2991 ieee80211_sta_rx_scan(wpa_s, buf, len, rx_status);
2998 mgmt = (struct ieee80211_mgmt *) buf;
2999 fc = le_to_host16(mgmt->frame_control);
3001 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT)
3002 ieee80211_sta_rx_mgmt(wpa_s, buf, len, rx_status);
3003 else if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_DATA) {
3004 if ((fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) !=
3007 /* mgmt->sa is actually BSSID for FromDS data frames */
3008 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) != 0)
3010 /* Skip IEEE 802.11 and LLC headers */
3012 if (WPA_GET_BE16(pos) != ETH_P_EAPOL)
3015 /* mgmt->bssid is actually BSSID for SA data frames */
3016 wpa_supplicant_rx_eapol(wpa_s, mgmt->bssid,
3017 pos, buf + len - pos);
3022 void ieee80211_sta_free_hw_features(struct wpa_hw_modes *hw_features,
3023 size_t num_hw_features)
3027 if (hw_features == NULL)
3030 for (i = 0; i < num_hw_features; i++) {
3031 os_free(hw_features[i].channels);
3032 os_free(hw_features[i].rates);
3035 os_free(hw_features);
3039 int ieee80211_sta_init(struct wpa_supplicant *wpa_s)
3041 u16 num_modes, flags;
3043 wpa_s->mlme.modes = wpa_drv_get_hw_feature_data(wpa_s, &num_modes,
3045 if (wpa_s->mlme.modes == NULL) {
3046 wpa_printf(MSG_ERROR, "MLME: Failed to read supported "
3047 "channels and rates from the driver");
3051 wpa_s->mlme.num_modes = num_modes;
3053 wpa_s->mlme.hw_modes = 1 << WPA_MODE_IEEE80211A;
3054 wpa_s->mlme.hw_modes |= 1 << WPA_MODE_IEEE80211B;
3055 wpa_s->mlme.hw_modes |= 1 << WPA_MODE_IEEE80211G;
3057 wpa_s->mlme.wmm_enabled = 1;
3063 void ieee80211_sta_deinit(struct wpa_supplicant *wpa_s)
3065 eloop_cancel_timeout(ieee80211_sta_timer, wpa_s, NULL);
3066 eloop_cancel_timeout(ieee80211_sta_scan_timer, wpa_s, NULL);
3067 os_free(wpa_s->mlme.extra_ie);
3068 wpa_s->mlme.extra_ie = NULL;
3069 os_free(wpa_s->mlme.extra_probe_ie);
3070 wpa_s->mlme.extra_probe_ie = NULL;
3071 os_free(wpa_s->mlme.assocreq_ies);
3072 wpa_s->mlme.assocreq_ies = NULL;
3073 os_free(wpa_s->mlme.assocresp_ies);
3074 wpa_s->mlme.assocresp_ies = NULL;
3075 ieee80211_bss_list_deinit(wpa_s);
3076 ieee80211_sta_free_hw_features(wpa_s->mlme.modes,
3077 wpa_s->mlme.num_modes);
3078 #ifdef CONFIG_IEEE80211R
3079 os_free(wpa_s->mlme.ft_ies);
3080 wpa_s->mlme.ft_ies = NULL;
3081 wpa_s->mlme.ft_ies_len = 0;
3082 #endif /* CONFIG_IEEE80211R */
3086 #ifdef CONFIG_IEEE80211R
3088 int ieee80211_sta_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
3089 const u8 *ies, size_t ies_len)
3092 wpa_printf(MSG_DEBUG, "MLME: Clear FT mobility domain");
3093 os_memset(wpa_s->mlme.current_md, 0, MOBILITY_DOMAIN_ID_LEN);
3095 wpa_printf(MSG_DEBUG, "MLME: Update FT IEs for MD " MACSTR,
3097 os_memcpy(wpa_s->mlme.current_md, md, MOBILITY_DOMAIN_ID_LEN);
3100 wpa_hexdump(MSG_DEBUG, "MLME: FT IEs", ies, ies_len);
3101 os_free(wpa_s->mlme.ft_ies);
3102 wpa_s->mlme.ft_ies = os_malloc(ies_len);
3103 if (wpa_s->mlme.ft_ies == NULL)
3105 os_memcpy(wpa_s->mlme.ft_ies, ies, ies_len);
3106 wpa_s->mlme.ft_ies_len = ies_len;
3112 int ieee80211_sta_send_ft_action(struct wpa_supplicant *wpa_s, u8 action,
3113 const u8 *target_ap,
3114 const u8 *ies, size_t ies_len)
3118 struct ieee80211_mgmt *mgmt;
3122 * Action frame payload:
3123 * Category[1] = 6 (Fast BSS Transition)
3124 * Action[1] = 1 (Fast BSS Transition Request)
3130 buf = os_zalloc(sizeof(*mgmt) + ies_len);
3132 wpa_printf(MSG_DEBUG, "MLME: Failed to allocate buffer for "
3137 mgmt = (struct ieee80211_mgmt *) buf;
3139 os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
3140 os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
3141 os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
3142 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
3143 WLAN_FC_STYPE_ACTION);
3144 mgmt->u.action.category = WLAN_ACTION_FT;
3145 mgmt->u.action.u.ft_action_req.action = action;
3146 os_memcpy(mgmt->u.action.u.ft_action_req.sta_addr, wpa_s->own_addr,
3148 os_memcpy(mgmt->u.action.u.ft_action_req.target_ap_addr, target_ap,
3150 os_memcpy(mgmt->u.action.u.ft_action_req.variable, ies, ies_len);
3151 len += 1 + sizeof(mgmt->u.action.u.ft_action_req) + ies_len;
3153 wpa_printf(MSG_DEBUG, "MLME: Send FT Action Frame: Action=%d "
3154 "Target AP=" MACSTR " body_len=%lu",
3155 action, MAC2STR(target_ap), (unsigned long) ies_len);
3157 res = ieee80211_sta_tx(wpa_s, buf, len);
3163 #endif /* CONFIG_IEEE80211R */
3166 int ieee80211_sta_set_probe_req_ie(struct wpa_supplicant *wpa_s, const u8 *ies,
3169 os_free(wpa_s->mlme.extra_probe_ie);
3170 wpa_s->mlme.extra_probe_ie = NULL;
3171 wpa_s->mlme.extra_probe_ie_len = 0;
3176 wpa_s->mlme.extra_probe_ie = os_malloc(ies_len);
3177 if (wpa_s->mlme.extra_probe_ie == NULL)
3180 os_memcpy(wpa_s->mlme.extra_probe_ie, ies, ies_len);
3181 wpa_s->mlme.extra_probe_ie_len = ies_len;