2 * hostapd / IEEE 802.11 Management
3 * Copyright (c) 2002-2008, Jouni Malinen <j@w1.fi>
4 * Copyright (c) 2007-2008, Intel Corporation
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
10 * Alternatively, this software may be distributed under the terms of BSD
13 * See README and COPYING for more details.
18 #ifndef CONFIG_NATIVE_WINDOWS
24 #include "ieee802_11.h"
26 #include "hw_features.h"
27 #include "radius/radius.h"
28 #include "radius/radius_client.h"
29 #include "ieee802_11_auth.h"
32 #include "ieee802_1x.h"
36 #include "accounting.h"
41 u8 * hostapd_eid_supp_rates(struct hostapd_data *hapd, u8 *eid)
46 if (hapd->iface->current_rates == NULL)
49 *pos++ = WLAN_EID_SUPP_RATES;
50 num = hapd->iface->num_rates;
52 /* rest of the rates are encoded in Extended supported
59 for (i = 0, count = 0; i < hapd->iface->num_rates && count < num;
62 *pos = hapd->iface->current_rates[i].rate / 5;
63 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
72 u8 * hostapd_eid_ext_supp_rates(struct hostapd_data *hapd, u8 *eid)
77 if (hapd->iface->current_rates == NULL)
80 num = hapd->iface->num_rates;
85 *pos++ = WLAN_EID_EXT_SUPP_RATES;
88 for (i = 0, count = 0; i < hapd->iface->num_rates && count < num + 8;
92 continue; /* already in SuppRates IE */
93 *pos = hapd->iface->current_rates[i].rate / 5;
94 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
103 u8 * hostapd_eid_ht_capabilities_info(struct hostapd_data *hapd, u8 *eid)
105 #ifdef CONFIG_IEEE80211N
106 struct ieee80211_ht_capability *cap;
109 if (!hapd->iconf->ieee80211n)
112 *pos++ = WLAN_EID_HT_CAP;
113 *pos++ = sizeof(*cap);
115 cap = (struct ieee80211_ht_capability *) pos;
116 os_memset(cap, 0, sizeof(*cap));
117 SET_2BIT_U8(&cap->mac_ht_params_info,
118 MAC_HT_PARAM_INFO_MAX_RX_AMPDU_FACTOR_OFFSET,
119 MAX_RX_AMPDU_FACTOR_64KB);
121 cap->capabilities_info = host_to_le16(hapd->iconf->ht_capab);
123 cap->supported_mcs_set[0] = 0xff;
124 cap->supported_mcs_set[1] = 0xff;
129 #else /* CONFIG_IEEE80211N */
131 #endif /* CONFIG_IEEE80211N */
135 u8 * hostapd_eid_ht_operation(struct hostapd_data *hapd, u8 *eid)
137 #ifdef CONFIG_IEEE80211N
138 struct ieee80211_ht_operation *oper;
141 if (!hapd->iconf->ieee80211n)
144 *pos++ = WLAN_EID_HT_OPERATION;
145 *pos++ = sizeof(*oper);
147 oper = (struct ieee80211_ht_operation *) pos;
148 os_memset(oper, 0, sizeof(*oper));
150 oper->control_chan = hapd->iconf->channel;
151 oper->operation_mode = host_to_le16(hapd->iface->ht_op_mode);
152 if (hapd->iconf->secondary_channel == 1)
153 oper->ht_param |= HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE |
154 HT_INFO_HT_PARAM_REC_TRANS_CHNL_WIDTH;
155 if (hapd->iconf->secondary_channel == -1)
156 oper->ht_param |= HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW |
157 HT_INFO_HT_PARAM_REC_TRANS_CHNL_WIDTH;
159 pos += sizeof(*oper);
162 #else /* CONFIG_IEEE80211N */
164 #endif /* CONFIG_IEEE80211N */
168 #ifdef CONFIG_IEEE80211N
172 Set to 0 (HT pure) under the followign conditions
173 - all STAs in the BSS are 20/40 MHz HT in 20/40 MHz BSS or
174 - all STAs in the BSS are 20 MHz HT in 20 MHz BSS
175 Set to 1 (HT non-member protection) if there may be non-HT STAs
176 in both the primary and the secondary channel
177 Set to 2 if only HT STAs are associated in BSS,
178 however and at least one 20 MHz HT STA is associated
179 Set to 3 (HT mixed mode) when one or more non-HT STAs are associated
180 (currently non-GF HT station is considered as non-HT STA also)
182 int hostapd_ht_operation_update(struct hostapd_iface *iface)
184 u16 cur_op_mode, new_op_mode;
185 int op_mode_changes = 0;
187 if (!iface->conf->ieee80211n || iface->conf->ht_op_mode_fixed)
190 wpa_printf(MSG_DEBUG, "%s current operation mode=0x%X",
191 __func__, iface->ht_op_mode);
193 if (!(iface->ht_op_mode & HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT)
194 && iface->num_sta_ht_no_gf) {
196 HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT;
198 } else if ((iface->ht_op_mode &
199 HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT) &&
200 iface->num_sta_ht_no_gf == 0) {
202 ~HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT;
206 if (!(iface->ht_op_mode & HT_INFO_OPERATION_MODE_NON_HT_STA_PRESENT) &&
207 (iface->num_sta_no_ht || iface->olbc_ht)) {
208 iface->ht_op_mode |= HT_INFO_OPERATION_MODE_NON_HT_STA_PRESENT;
210 } else if ((iface->ht_op_mode &
211 HT_INFO_OPERATION_MODE_NON_HT_STA_PRESENT) &&
212 (iface->num_sta_no_ht == 0 && !iface->olbc_ht)) {
214 ~HT_INFO_OPERATION_MODE_NON_HT_STA_PRESENT;
218 /* Note: currently we switch to the MIXED op mode if HT non-greenfield
219 * station is associated. Probably it's a theoretical case, since
220 * it looks like all known HT STAs support greenfield.
223 if (iface->num_sta_no_ht ||
224 (iface->ht_op_mode & HT_INFO_OPERATION_MODE_NON_GF_DEVS_PRESENT))
225 new_op_mode = OP_MODE_MIXED;
226 else if ((iface->conf->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)
227 && iface->num_sta_ht_20mhz)
228 new_op_mode = OP_MODE_20MHZ_HT_STA_ASSOCED;
229 else if (iface->olbc_ht)
230 new_op_mode = OP_MODE_MAY_BE_LEGACY_STAS;
232 new_op_mode = OP_MODE_PURE;
234 cur_op_mode = iface->ht_op_mode & HT_INFO_OPERATION_MODE_OP_MODE_MASK;
235 if (cur_op_mode != new_op_mode) {
236 iface->ht_op_mode &= ~HT_INFO_OPERATION_MODE_OP_MODE_MASK;
237 iface->ht_op_mode |= new_op_mode;
241 wpa_printf(MSG_DEBUG, "%s new operation mode=0x%X changes=%d",
242 __func__, iface->ht_op_mode, op_mode_changes);
244 return op_mode_changes;
247 #endif /* CONFIG_IEEE80211N */
250 u16 hostapd_own_capab_info(struct hostapd_data *hapd, struct sta_info *sta,
253 int capab = WLAN_CAPABILITY_ESS;
256 if (hapd->iface->num_sta_no_short_preamble == 0 &&
257 hapd->iconf->preamble == SHORT_PREAMBLE)
258 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
260 privacy = hapd->conf->ssid.wep.keys_set;
262 if (hapd->conf->ieee802_1x &&
263 (hapd->conf->default_wep_key_len ||
264 hapd->conf->individual_wep_key_len))
271 int policy, def_klen;
272 if (probe && sta->ssid_probe) {
273 policy = sta->ssid_probe->security_policy;
274 def_klen = sta->ssid_probe->wep.default_len;
276 policy = sta->ssid->security_policy;
277 def_klen = sta->ssid->wep.default_len;
279 privacy = policy != SECURITY_PLAINTEXT;
280 if (policy == SECURITY_IEEE_802_1X && def_klen == 0)
285 capab |= WLAN_CAPABILITY_PRIVACY;
287 if (hapd->iface->current_mode &&
288 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G &&
289 hapd->iface->num_sta_no_short_slot_time == 0)
290 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
296 #ifdef CONFIG_IEEE80211W
297 static u8 * hostapd_eid_assoc_comeback_time(struct hostapd_data *hapd,
298 struct sta_info *sta, u8 *eid)
302 struct os_time now, passed;
304 *pos++ = WLAN_EID_TIMEOUT_INTERVAL;
306 *pos++ = WLAN_TIMEOUT_ASSOC_COMEBACK;
308 os_time_sub(&now, &sta->sa_query_start, &passed);
309 tu = (passed.sec * 1000000 + passed.usec) / 1024;
310 if (hapd->conf->assoc_sa_query_max_timeout > tu)
311 timeout = hapd->conf->assoc_sa_query_max_timeout - tu;
314 if (timeout < hapd->conf->assoc_sa_query_max_timeout)
315 timeout++; /* add some extra time for local timers */
316 WPA_PUT_LE32(pos, timeout);
321 #endif /* CONFIG_IEEE80211W */
324 void ieee802_11_print_ssid(char *buf, const u8 *ssid, u8 len)
327 if (len > HOSTAPD_MAX_SSID_LEN)
328 len = HOSTAPD_MAX_SSID_LEN;
329 for (i = 0; i < len; i++) {
330 if (ssid[i] >= 32 && ssid[i] < 127)
340 * ieee802_11_send_deauth - Send Deauthentication frame
341 * @hapd: hostapd BSS data
342 * @addr: Address of the destination STA
343 * @reason: Reason code for Deauthentication
345 void ieee802_11_send_deauth(struct hostapd_data *hapd, u8 *addr, u16 reason)
347 struct ieee80211_mgmt mgmt;
349 hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
351 "deauthenticate - reason %d", reason);
352 os_memset(&mgmt, 0, sizeof(mgmt));
353 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
354 WLAN_FC_STYPE_DEAUTH);
355 os_memcpy(mgmt.da, addr, ETH_ALEN);
356 os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
357 os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
358 mgmt.u.deauth.reason_code = host_to_le16(reason);
359 if (hostapd_send_mgmt_frame(hapd, &mgmt, IEEE80211_HDRLEN +
360 sizeof(mgmt.u.deauth)) < 0)
361 perror("ieee802_11_send_deauth: send");
365 static u16 auth_shared_key(struct hostapd_data *hapd, struct sta_info *sta,
366 u16 auth_transaction, u8 *challenge, int iswep)
368 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
370 "authentication (shared key, transaction %d)",
373 if (auth_transaction == 1) {
374 if (!sta->challenge) {
375 /* Generate a pseudo-random challenge */
379 sta->challenge = os_zalloc(WLAN_AUTH_CHALLENGE_LEN);
380 if (sta->challenge == NULL)
381 return WLAN_STATUS_UNSPECIFIED_FAILURE;
385 os_memcpy(key, &now, 4);
386 os_memcpy(key + 4, &r, 4);
387 rc4(sta->challenge, WLAN_AUTH_CHALLENGE_LEN,
393 if (auth_transaction != 3)
394 return WLAN_STATUS_UNSPECIFIED_FAILURE;
397 if (!iswep || !sta->challenge || !challenge ||
398 os_memcmp(sta->challenge, challenge, WLAN_AUTH_CHALLENGE_LEN)) {
399 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
401 "shared key authentication - invalid "
402 "challenge-response");
403 return WLAN_STATUS_CHALLENGE_FAIL;
406 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
408 "authentication OK (shared key)");
409 #ifdef IEEE80211_REQUIRE_AUTH_ACK
410 /* Station will be marked authenticated if it ACKs the
411 * authentication reply. */
413 sta->flags |= WLAN_STA_AUTH;
414 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
416 os_free(sta->challenge);
417 sta->challenge = NULL;
423 static void send_auth_reply(struct hostapd_data *hapd,
424 const u8 *dst, const u8 *bssid,
425 u16 auth_alg, u16 auth_transaction, u16 resp,
426 const u8 *ies, size_t ies_len)
428 struct ieee80211_mgmt *reply;
432 rlen = IEEE80211_HDRLEN + sizeof(reply->u.auth) + ies_len;
433 buf = os_zalloc(rlen);
437 reply = (struct ieee80211_mgmt *) buf;
438 reply->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
440 os_memcpy(reply->da, dst, ETH_ALEN);
441 os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
442 os_memcpy(reply->bssid, bssid, ETH_ALEN);
444 reply->u.auth.auth_alg = host_to_le16(auth_alg);
445 reply->u.auth.auth_transaction = host_to_le16(auth_transaction);
446 reply->u.auth.status_code = host_to_le16(resp);
449 os_memcpy(reply->u.auth.variable, ies, ies_len);
451 wpa_printf(MSG_DEBUG, "authentication reply: STA=" MACSTR
452 " auth_alg=%d auth_transaction=%d resp=%d (IE len=%lu)",
453 MAC2STR(dst), auth_alg, auth_transaction,
454 resp, (unsigned long) ies_len);
455 if (hostapd_send_mgmt_frame(hapd, reply, rlen) < 0)
456 perror("send_auth_reply: send");
462 #ifdef CONFIG_IEEE80211R
463 static void handle_auth_ft_finish(void *ctx, const u8 *dst, const u8 *bssid,
464 u16 auth_transaction, u16 status,
465 const u8 *ies, size_t ies_len)
467 struct hostapd_data *hapd = ctx;
468 struct sta_info *sta;
470 send_auth_reply(hapd, dst, bssid, WLAN_AUTH_FT, auth_transaction,
471 status, ies, ies_len);
473 if (status != WLAN_STATUS_SUCCESS)
476 sta = ap_get_sta(hapd, dst);
480 hostapd_logger(hapd, dst, HOSTAPD_MODULE_IEEE80211,
481 HOSTAPD_LEVEL_DEBUG, "authentication OK (FT)");
482 sta->flags |= WLAN_STA_AUTH;
483 mlme_authenticate_indication(hapd, sta);
485 #endif /* CONFIG_IEEE80211R */
488 static void handle_auth(struct hostapd_data *hapd, struct ieee80211_mgmt *mgmt,
491 u16 auth_alg, auth_transaction, status_code;
492 u16 resp = WLAN_STATUS_SUCCESS;
493 struct sta_info *sta = NULL;
496 u8 *challenge = NULL;
497 u32 session_timeout, acct_interim_interval;
499 u8 resp_ies[2 + WLAN_AUTH_CHALLENGE_LEN];
500 size_t resp_ies_len = 0;
502 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
503 printf("handle_auth - too short payload (len=%lu)\n",
504 (unsigned long) len);
508 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
509 auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
510 status_code = le_to_host16(mgmt->u.auth.status_code);
511 fc = le_to_host16(mgmt->frame_control);
513 if (len >= IEEE80211_HDRLEN + sizeof(mgmt->u.auth) +
514 2 + WLAN_AUTH_CHALLENGE_LEN &&
515 mgmt->u.auth.variable[0] == WLAN_EID_CHALLENGE &&
516 mgmt->u.auth.variable[1] == WLAN_AUTH_CHALLENGE_LEN)
517 challenge = &mgmt->u.auth.variable[2];
519 wpa_printf(MSG_DEBUG, "authentication: STA=" MACSTR " auth_alg=%d "
520 "auth_transaction=%d status_code=%d wep=%d%s",
521 MAC2STR(mgmt->sa), auth_alg, auth_transaction,
522 status_code, !!(fc & WLAN_FC_ISWEP),
523 challenge ? " challenge" : "");
525 if (hapd->tkip_countermeasures) {
526 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
530 if (!(((hapd->conf->auth_algs & WPA_AUTH_ALG_OPEN) &&
531 auth_alg == WLAN_AUTH_OPEN) ||
532 #ifdef CONFIG_IEEE80211R
534 (hapd->conf->wpa_key_mgmt &
535 (WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_FT_PSK)) &&
536 auth_alg == WLAN_AUTH_FT) ||
537 #endif /* CONFIG_IEEE80211R */
538 ((hapd->conf->auth_algs & WPA_AUTH_ALG_SHARED) &&
539 auth_alg == WLAN_AUTH_SHARED_KEY))) {
540 printf("Unsupported authentication algorithm (%d)\n",
542 resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
546 if (!(auth_transaction == 1 ||
547 (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 3))) {
548 printf("Unknown authentication transaction number (%d)\n",
550 resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
554 if (os_memcmp(mgmt->sa, hapd->own_addr, ETH_ALEN) == 0) {
555 printf("Station " MACSTR " not allowed to authenticate.\n",
557 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
561 res = hostapd_allowed_address(hapd, mgmt->sa, (u8 *) mgmt, len,
563 &acct_interim_interval, &vlan_id);
564 if (res == HOSTAPD_ACL_REJECT) {
565 printf("Station " MACSTR " not allowed to authenticate.\n",
567 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
570 if (res == HOSTAPD_ACL_PENDING) {
571 wpa_printf(MSG_DEBUG, "Authentication frame from " MACSTR
572 " waiting for an external authentication",
574 /* Authentication code will re-send the authentication frame
575 * after it has received (and cached) information from the
576 * external source. */
580 sta = ap_sta_add(hapd, mgmt->sa);
582 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
587 if (hostapd_get_vlan_id_ifname(hapd->conf->vlan,
588 sta->vlan_id) == NULL) {
589 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
590 HOSTAPD_LEVEL_INFO, "Invalid VLAN ID "
591 "%d received from RADIUS server",
593 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
596 sta->vlan_id = vlan_id;
597 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
598 HOSTAPD_LEVEL_INFO, "VLAN ID %d", sta->vlan_id);
601 sta->flags &= ~WLAN_STA_PREAUTH;
602 ieee802_1x_notify_pre_auth(sta->eapol_sm, 0);
604 if (hapd->conf->radius->acct_interim_interval == 0 &&
605 acct_interim_interval)
606 sta->acct_interim_interval = acct_interim_interval;
607 if (res == HOSTAPD_ACL_ACCEPT_TIMEOUT)
608 ap_sta_session_timeout(hapd, sta, session_timeout);
610 ap_sta_no_session_timeout(hapd, sta);
614 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
616 "authentication OK (open system)");
617 #ifdef IEEE80211_REQUIRE_AUTH_ACK
618 /* Station will be marked authenticated if it ACKs the
619 * authentication reply. */
621 sta->flags |= WLAN_STA_AUTH;
622 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
623 sta->auth_alg = WLAN_AUTH_OPEN;
624 mlme_authenticate_indication(hapd, sta);
627 case WLAN_AUTH_SHARED_KEY:
628 resp = auth_shared_key(hapd, sta, auth_transaction, challenge,
630 sta->auth_alg = WLAN_AUTH_SHARED_KEY;
631 mlme_authenticate_indication(hapd, sta);
632 if (sta->challenge && auth_transaction == 1) {
633 resp_ies[0] = WLAN_EID_CHALLENGE;
634 resp_ies[1] = WLAN_AUTH_CHALLENGE_LEN;
635 os_memcpy(resp_ies + 2, sta->challenge,
636 WLAN_AUTH_CHALLENGE_LEN);
637 resp_ies_len = 2 + WLAN_AUTH_CHALLENGE_LEN;
640 #ifdef CONFIG_IEEE80211R
642 sta->auth_alg = WLAN_AUTH_FT;
643 if (sta->wpa_sm == NULL)
644 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
646 if (sta->wpa_sm == NULL) {
647 wpa_printf(MSG_DEBUG, "FT: Failed to initialize WPA "
649 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
652 wpa_ft_process_auth(sta->wpa_sm, mgmt->bssid,
653 auth_transaction, mgmt->u.auth.variable,
654 len - IEEE80211_HDRLEN -
655 sizeof(mgmt->u.auth),
656 handle_auth_ft_finish, hapd);
657 /* handle_auth_ft_finish() callback will complete auth. */
659 #endif /* CONFIG_IEEE80211R */
663 send_auth_reply(hapd, mgmt->sa, mgmt->bssid, auth_alg,
664 auth_transaction + 1, resp, resp_ies, resp_ies_len);
668 static int hostapd_get_aid(struct hostapd_data *hapd, struct sta_info *sta)
672 /* get a unique AID */
674 wpa_printf(MSG_DEBUG, " old AID %d", sta->aid);
678 for (i = 0; i < AID_WORDS; i++) {
679 if (hapd->sta_aid[i] == (u32) -1)
681 for (j = 0; j < 32; j++) {
682 if (!(hapd->sta_aid[i] & BIT(j)))
690 aid = i * 32 + j + 1;
695 hapd->sta_aid[i] |= BIT(j);
696 wpa_printf(MSG_DEBUG, " new AID %d", sta->aid);
701 static void handle_assoc(struct hostapd_data *hapd,
702 struct ieee80211_mgmt *mgmt, size_t len, int reassoc)
704 u16 capab_info, listen_interval;
705 u16 resp = WLAN_STATUS_SUCCESS;
708 int send_deauth = 0, send_len, left, i;
709 struct sta_info *sta;
710 struct ieee802_11_elems elems;
711 u8 buf[sizeof(struct ieee80211_mgmt) + 1024];
712 struct ieee80211_mgmt *reply;
714 if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) :
715 sizeof(mgmt->u.assoc_req))) {
716 printf("handle_assoc(reassoc=%d) - too short payload (len=%lu)"
717 "\n", reassoc, (unsigned long) len);
722 capab_info = le_to_host16(mgmt->u.reassoc_req.capab_info);
723 listen_interval = le_to_host16(
724 mgmt->u.reassoc_req.listen_interval);
725 wpa_printf(MSG_DEBUG, "reassociation request: STA=" MACSTR
726 " capab_info=0x%02x listen_interval=%d current_ap="
728 MAC2STR(mgmt->sa), capab_info, listen_interval,
729 MAC2STR(mgmt->u.reassoc_req.current_ap));
730 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.reassoc_req));
731 pos = mgmt->u.reassoc_req.variable;
733 capab_info = le_to_host16(mgmt->u.assoc_req.capab_info);
734 listen_interval = le_to_host16(
735 mgmt->u.assoc_req.listen_interval);
736 wpa_printf(MSG_DEBUG, "association request: STA=" MACSTR
737 " capab_info=0x%02x listen_interval=%d",
738 MAC2STR(mgmt->sa), capab_info, listen_interval);
739 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_req));
740 pos = mgmt->u.assoc_req.variable;
743 sta = ap_get_sta(hapd, mgmt->sa);
744 #ifdef CONFIG_IEEE80211R
745 if (sta && sta->auth_alg == WLAN_AUTH_FT &&
746 (sta->flags & WLAN_STA_AUTH) == 0) {
747 wpa_printf(MSG_DEBUG, "FT: Allow STA " MACSTR " to associate "
748 "prior to authentication since it is using "
749 "over-the-DS FT", MAC2STR(mgmt->sa));
751 #endif /* CONFIG_IEEE80211R */
752 if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) {
753 printf("STA " MACSTR " trying to associate before "
754 "authentication\n", MAC2STR(mgmt->sa));
756 printf(" sta: addr=" MACSTR " aid=%d flags=0x%04x\n",
757 MAC2STR(sta->addr), sta->aid, sta->flags);
760 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
764 if (hapd->tkip_countermeasures) {
765 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
769 if (listen_interval > hapd->conf->max_listen_interval) {
770 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
772 "Too large Listen Interval (%d)",
774 resp = WLAN_STATUS_ASSOC_DENIED_LISTEN_INT_TOO_LARGE;
778 sta->capability = capab_info;
779 sta->listen_interval = listen_interval;
781 /* followed by SSID and Supported rates; and HT capabilities if 802.11n
783 if (ieee802_11_parse_elems(pos, left, &elems, 1) == ParseFailed ||
785 printf("STA " MACSTR " sent invalid association request\n",
787 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
791 if (elems.ssid_len != hapd->conf->ssid.ssid_len ||
792 os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) != 0)
795 ieee802_11_print_ssid(ssid_txt, elems.ssid, elems.ssid_len);
796 printf("Station " MACSTR " tried to associate with "
797 "unknown SSID '%s'\n", MAC2STR(sta->addr), ssid_txt);
798 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
802 sta->flags &= ~WLAN_STA_WMM;
803 if (elems.wmm && hapd->conf->wmm_enabled) {
804 if (hostapd_eid_wmm_valid(hapd, elems.wmm, elems.wmm_len))
805 hostapd_logger(hapd, sta->addr,
808 "invalid WMM element in association "
811 sta->flags |= WLAN_STA_WMM;
814 if (!elems.supp_rates) {
815 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
817 "No supported rates element in AssocReq");
818 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
822 if (elems.supp_rates_len > sizeof(sta->supported_rates)) {
823 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
825 "Invalid supported rates element length %d",
826 elems.supp_rates_len);
827 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
831 os_memset(sta->supported_rates, 0, sizeof(sta->supported_rates));
832 os_memcpy(sta->supported_rates, elems.supp_rates,
833 elems.supp_rates_len);
834 sta->supported_rates_len = elems.supp_rates_len;
836 if (elems.ext_supp_rates) {
837 if (elems.supp_rates_len + elems.ext_supp_rates_len >
838 sizeof(sta->supported_rates)) {
839 hostapd_logger(hapd, mgmt->sa,
840 HOSTAPD_MODULE_IEEE80211,
842 "Invalid supported rates element length"
843 " %d+%d", elems.supp_rates_len,
844 elems.ext_supp_rates_len);
845 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
849 os_memcpy(sta->supported_rates + elems.supp_rates_len,
850 elems.ext_supp_rates, elems.ext_supp_rates_len);
851 sta->supported_rates_len += elems.ext_supp_rates_len;
854 #ifdef CONFIG_IEEE80211N
855 /* save HT capabilities in the sta object */
856 os_memset(&sta->ht_capabilities, 0, sizeof(sta->ht_capabilities));
857 if (elems.ht_capabilities &&
858 elems.ht_capabilities_len >=
859 sizeof(struct ieee80211_ht_capability)) {
860 sta->flags |= WLAN_STA_HT;
861 sta->ht_capabilities.id = WLAN_EID_HT_CAP;
862 sta->ht_capabilities.length =
863 sizeof(struct ieee80211_ht_capability);
864 os_memcpy(&sta->ht_capabilities.data,
865 elems.ht_capabilities,
866 sizeof(struct ieee80211_ht_capability));
868 sta->flags &= ~WLAN_STA_HT;
869 #endif /* CONFIG_IEEE80211N */
871 if ((hapd->conf->wpa & WPA_PROTO_RSN) && elems.rsn_ie) {
872 wpa_ie = elems.rsn_ie;
873 wpa_ie_len = elems.rsn_ie_len;
874 } else if ((hapd->conf->wpa & WPA_PROTO_WPA) &&
876 wpa_ie = elems.wpa_ie;
877 wpa_ie_len = elems.wpa_ie_len;
883 sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS);
884 if (hapd->conf->wps_state && wpa_ie == NULL) {
886 wpa_printf(MSG_DEBUG, "STA included WPS IE in "
887 "(Re)Association Request - assume WPS is "
889 sta->flags |= WLAN_STA_WPS;
890 wpabuf_free(sta->wps_ie);
891 sta->wps_ie = wpabuf_alloc_copy(elems.wps_ie + 4,
892 elems.wps_ie_len - 4);
894 wpa_printf(MSG_DEBUG, "STA did not include WPA/RSN IE "
895 "in (Re)Association Request - possible WPS "
897 sta->flags |= WLAN_STA_MAYBE_WPS;
900 #endif /* CONFIG_WPS */
901 if (hapd->conf->wpa && wpa_ie == NULL) {
902 printf("STA " MACSTR ": No WPA/RSN IE in association "
903 "request\n", MAC2STR(sta->addr));
904 resp = WLAN_STATUS_INVALID_IE;
908 if (hapd->conf->wpa && wpa_ie) {
912 if (sta->wpa_sm == NULL)
913 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
915 if (sta->wpa_sm == NULL) {
916 printf("Failed to initialize WPA state machine\n");
917 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
920 res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
922 elems.mdie, elems.mdie_len);
923 if (res == WPA_INVALID_GROUP)
924 resp = WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
925 else if (res == WPA_INVALID_PAIRWISE)
926 resp = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID;
927 else if (res == WPA_INVALID_AKMP)
928 resp = WLAN_STATUS_AKMP_NOT_VALID;
929 else if (res == WPA_ALLOC_FAIL)
930 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
931 #ifdef CONFIG_IEEE80211W
932 else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION)
933 resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
934 else if (res == WPA_INVALID_MGMT_GROUP_CIPHER)
935 resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
936 #endif /* CONFIG_IEEE80211W */
937 else if (res == WPA_INVALID_MDIE)
938 resp = WLAN_STATUS_INVALID_MDIE;
939 else if (res != WPA_IE_OK)
940 resp = WLAN_STATUS_INVALID_IE;
941 if (resp != WLAN_STATUS_SUCCESS)
943 #ifdef CONFIG_IEEE80211W
944 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
945 sta->sa_query_count > 0)
946 ap_check_sa_query_timeout(hapd, sta);
947 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
948 (!reassoc || sta->auth_alg != WLAN_AUTH_FT)) {
950 * STA has already been associated with MFP and SA
951 * Query timeout has not been reached. Reject the
952 * association attempt temporarily and start SA Query,
953 * if one is not pending.
956 if (sta->sa_query_count == 0)
957 ap_sta_start_sa_query(hapd, sta);
959 resp = WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY;
963 if (wpa_auth_uses_mfp(sta->wpa_sm))
964 sta->flags |= WLAN_STA_MFP;
966 sta->flags &= ~WLAN_STA_MFP;
967 #endif /* CONFIG_IEEE80211W */
969 #ifdef CONFIG_IEEE80211R
970 if (sta->auth_alg == WLAN_AUTH_FT) {
972 wpa_printf(MSG_DEBUG, "FT: " MACSTR " tried "
973 "to use association (not "
974 "re-association) with FT auth_alg",
976 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
980 resp = wpa_ft_validate_reassoc(sta->wpa_sm, pos, left);
981 if (resp != WLAN_STATUS_SUCCESS)
984 #endif /* CONFIG_IEEE80211R */
985 #ifdef CONFIG_IEEE80211N
986 if ((sta->flags & WLAN_STA_HT) &&
987 wpa_auth_get_pairwise(sta->wpa_sm) == WPA_CIPHER_TKIP) {
988 wpa_printf(MSG_DEBUG, "HT: " MACSTR " tried to "
989 "use TKIP with HT association",
991 resp = WLAN_STATUS_CIPHER_REJECTED_PER_POLICY;
994 #endif /* CONFIG_IEEE80211N */
996 wpa_auth_sta_no_wpa(sta->wpa_sm);
998 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
999 sta->flags |= WLAN_STA_NONERP;
1000 for (i = 0; i < sta->supported_rates_len; i++) {
1001 if ((sta->supported_rates[i] & 0x7f) > 22) {
1002 sta->flags &= ~WLAN_STA_NONERP;
1006 if (sta->flags & WLAN_STA_NONERP && !sta->nonerp_set) {
1007 sta->nonerp_set = 1;
1008 hapd->iface->num_sta_non_erp++;
1009 if (hapd->iface->num_sta_non_erp == 1)
1010 ieee802_11_set_beacons(hapd->iface);
1013 if (!(sta->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) &&
1014 !sta->no_short_slot_time_set) {
1015 sta->no_short_slot_time_set = 1;
1016 hapd->iface->num_sta_no_short_slot_time++;
1017 if (hapd->iface->current_mode->mode ==
1018 HOSTAPD_MODE_IEEE80211G &&
1019 hapd->iface->num_sta_no_short_slot_time == 1)
1020 ieee802_11_set_beacons(hapd->iface);
1023 if (sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
1024 sta->flags |= WLAN_STA_SHORT_PREAMBLE;
1026 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
1028 if (!(sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) &&
1029 !sta->no_short_preamble_set) {
1030 sta->no_short_preamble_set = 1;
1031 hapd->iface->num_sta_no_short_preamble++;
1032 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
1033 && hapd->iface->num_sta_no_short_preamble == 1)
1034 ieee802_11_set_beacons(hapd->iface);
1037 #ifdef CONFIG_IEEE80211N
1038 if (sta->flags & WLAN_STA_HT) {
1039 u16 ht_capab = le_to_host16(
1040 sta->ht_capabilities.data.capabilities_info);
1041 wpa_printf(MSG_DEBUG, "HT: STA " MACSTR " HT Capabilities "
1042 "Info: 0x%04x", MAC2STR(sta->addr), ht_capab);
1043 if ((ht_capab & HT_CAP_INFO_GREEN_FIELD) == 0) {
1044 if (!sta->no_ht_gf_set) {
1045 sta->no_ht_gf_set = 1;
1046 hapd->iface->num_sta_ht_no_gf++;
1048 wpa_printf(MSG_DEBUG, "%s STA " MACSTR " - no "
1049 "greenfield, num of non-gf stations %d",
1050 __func__, MAC2STR(sta->addr),
1051 hapd->iface->num_sta_ht_no_gf);
1053 if ((ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET) == 0) {
1054 if (!sta->ht_20mhz_set) {
1055 sta->ht_20mhz_set = 1;
1056 hapd->iface->num_sta_ht_20mhz++;
1058 wpa_printf(MSG_DEBUG, "%s STA " MACSTR " - 20 MHz HT, "
1059 "num of 20MHz HT STAs %d",
1060 __func__, MAC2STR(sta->addr),
1061 hapd->iface->num_sta_ht_20mhz);
1064 if (!sta->no_ht_set) {
1066 hapd->iface->num_sta_no_ht++;
1068 if (hapd->iconf->ieee80211n) {
1069 wpa_printf(MSG_DEBUG, "%s STA " MACSTR
1070 " - no HT, num of non-HT stations %d",
1071 __func__, MAC2STR(sta->addr),
1072 hapd->iface->num_sta_no_ht);
1076 if (hostapd_ht_operation_update(hapd->iface) > 0)
1077 ieee802_11_set_beacons(hapd->iface);
1078 #endif /* CONFIG_IEEE80211N */
1080 if (hostapd_get_aid(hapd, sta) < 0) {
1081 resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
1082 wpa_printf(MSG_ERROR, " no room for more AIDs");
1086 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1087 HOSTAPD_LEVEL_DEBUG,
1088 "association OK (aid %d)", sta->aid);
1089 /* Station will be marked associated, after it acknowledges AssocResp
1092 #ifdef CONFIG_IEEE80211W
1093 if ((sta->flags & WLAN_STA_MFP) && sta->sa_query_timed_out) {
1094 wpa_printf(MSG_DEBUG, "Allowing %sassociation after timed out "
1095 "SA Query procedure", reassoc ? "re" : "");
1096 /* TODO: Send a protected Disassociate frame to the STA using
1097 * the old key and Reason Code "Previous Authentication no
1098 * longer valid". Make sure this is only sent protected since
1099 * unprotected frame would be received by the STA that is now
1100 * trying to associate.
1103 #endif /* CONFIG_IEEE80211W */
1106 os_memcpy(sta->previous_ap, mgmt->u.reassoc_req.current_ap,
1110 if (sta->last_assoc_req)
1111 os_free(sta->last_assoc_req);
1112 sta->last_assoc_req = os_malloc(len);
1113 if (sta->last_assoc_req)
1114 os_memcpy(sta->last_assoc_req, mgmt, len);
1116 /* Make sure that the previously registered inactivity timer will not
1117 * remove the STA immediately. */
1118 sta->timeout_next = STA_NULLFUNC;
1121 os_memset(buf, 0, sizeof(buf));
1122 reply = (struct ieee80211_mgmt *) buf;
1123 reply->frame_control =
1124 IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1125 (send_deauth ? WLAN_FC_STYPE_DEAUTH :
1126 (reassoc ? WLAN_FC_STYPE_REASSOC_RESP :
1127 WLAN_FC_STYPE_ASSOC_RESP)));
1128 os_memcpy(reply->da, mgmt->sa, ETH_ALEN);
1129 os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
1130 os_memcpy(reply->bssid, mgmt->bssid, ETH_ALEN);
1132 send_len = IEEE80211_HDRLEN;
1134 send_len += sizeof(reply->u.deauth);
1135 reply->u.deauth.reason_code = host_to_le16(resp);
1138 send_len += sizeof(reply->u.assoc_resp);
1139 reply->u.assoc_resp.capab_info =
1140 host_to_le16(hostapd_own_capab_info(hapd, sta, 0));
1141 reply->u.assoc_resp.status_code = host_to_le16(resp);
1142 reply->u.assoc_resp.aid = host_to_le16((sta ? sta->aid : 0)
1143 | BIT(14) | BIT(15));
1144 /* Supported rates */
1145 p = hostapd_eid_supp_rates(hapd, reply->u.assoc_resp.variable);
1146 /* Extended supported rates */
1147 p = hostapd_eid_ext_supp_rates(hapd, p);
1148 if (sta->flags & WLAN_STA_WMM)
1149 p = hostapd_eid_wmm(hapd, p);
1151 p = hostapd_eid_ht_capabilities_info(hapd, p);
1152 p = hostapd_eid_ht_operation(hapd, p);
1154 #ifdef CONFIG_IEEE80211R
1155 if (resp == WLAN_STATUS_SUCCESS) {
1156 /* IEEE 802.11r: Mobility Domain Information, Fast BSS
1157 * Transition Information, RSN, [RIC Response] */
1158 p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, p,
1159 buf + sizeof(buf) - p,
1163 #endif /* CONFIG_IEEE80211R */
1165 #ifdef CONFIG_IEEE80211W
1166 if (resp == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY)
1167 p = hostapd_eid_assoc_comeback_time(hapd, sta, p);
1168 #endif /* CONFIG_IEEE80211W */
1170 send_len += p - reply->u.assoc_resp.variable;
1173 if (hostapd_send_mgmt_frame(hapd, reply, send_len) < 0)
1174 perror("handle_assoc: send");
1178 static void handle_disassoc(struct hostapd_data *hapd,
1179 struct ieee80211_mgmt *mgmt, size_t len)
1181 struct sta_info *sta;
1183 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.disassoc)) {
1184 printf("handle_disassoc - too short payload (len=%lu)\n",
1185 (unsigned long) len);
1189 wpa_printf(MSG_DEBUG, "disassocation: STA=" MACSTR " reason_code=%d",
1191 le_to_host16(mgmt->u.disassoc.reason_code));
1193 sta = ap_get_sta(hapd, mgmt->sa);
1195 printf("Station " MACSTR " trying to disassociate, but it "
1196 "is not associated.\n", MAC2STR(mgmt->sa));
1200 sta->flags &= ~WLAN_STA_ASSOC;
1201 wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
1202 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1203 HOSTAPD_LEVEL_INFO, "disassociated");
1204 sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1205 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1206 /* Stop Accounting and IEEE 802.1X sessions, but leave the STA
1208 accounting_sta_stop(hapd, sta);
1209 ieee802_1x_free_station(sta);
1210 hostapd_sta_remove(hapd, sta->addr);
1212 if (sta->timeout_next == STA_NULLFUNC ||
1213 sta->timeout_next == STA_DISASSOC) {
1214 sta->timeout_next = STA_DEAUTH;
1215 eloop_cancel_timeout(ap_handle_timer, hapd, sta);
1216 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
1220 mlme_disassociate_indication(
1221 hapd, sta, le_to_host16(mgmt->u.disassoc.reason_code));
1225 static void handle_deauth(struct hostapd_data *hapd,
1226 struct ieee80211_mgmt *mgmt, size_t len)
1228 struct sta_info *sta;
1230 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.deauth)) {
1231 printf("handle_deauth - too short payload (len=%lu)\n",
1232 (unsigned long) len);
1236 wpa_printf(MSG_DEBUG, "deauthentication: STA=" MACSTR
1239 le_to_host16(mgmt->u.deauth.reason_code));
1241 sta = ap_get_sta(hapd, mgmt->sa);
1243 printf("Station " MACSTR " trying to deauthenticate, but it "
1244 "is not authenticated.\n", MAC2STR(mgmt->sa));
1248 sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
1249 wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
1250 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1251 HOSTAPD_LEVEL_DEBUG, "deauthenticated");
1252 mlme_deauthenticate_indication(
1253 hapd, sta, le_to_host16(mgmt->u.deauth.reason_code));
1254 sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
1255 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1256 ap_free_sta(hapd, sta);
1260 static void handle_beacon(struct hostapd_data *hapd,
1261 struct ieee80211_mgmt *mgmt, size_t len,
1262 struct hostapd_frame_info *fi)
1264 struct ieee802_11_elems elems;
1266 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.beacon)) {
1267 printf("handle_beacon - too short payload (len=%lu)\n",
1268 (unsigned long) len);
1272 (void) ieee802_11_parse_elems(mgmt->u.beacon.variable,
1273 len - (IEEE80211_HDRLEN +
1274 sizeof(mgmt->u.beacon)), &elems,
1277 ap_list_process_beacon(hapd->iface, mgmt, &elems, fi);
1281 #ifdef CONFIG_IEEE80211W
1283 /* MLME-SAQuery.request */
1284 void ieee802_11_send_sa_query_req(struct hostapd_data *hapd,
1285 const u8 *addr, const u8 *trans_id)
1287 struct ieee80211_mgmt mgmt;
1290 os_memset(&mgmt, 0, sizeof(mgmt));
1291 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1292 WLAN_FC_STYPE_ACTION);
1293 os_memcpy(mgmt.da, addr, ETH_ALEN);
1294 os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
1295 os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
1296 mgmt.u.action.category = WLAN_ACTION_SA_QUERY;
1297 mgmt.u.action.u.sa_query_req.action = WLAN_SA_QUERY_REQUEST;
1298 os_memcpy(mgmt.u.action.u.sa_query_req.trans_id, trans_id,
1299 WLAN_SA_QUERY_TR_ID_LEN);
1300 end = mgmt.u.action.u.sa_query_req.trans_id + WLAN_SA_QUERY_TR_ID_LEN;
1301 if (hostapd_send_mgmt_frame(hapd, &mgmt, end - (u8 *) &mgmt) < 0)
1302 perror("ieee802_11_send_sa_query_req: send");
1306 static void hostapd_sa_query_action(struct hostapd_data *hapd,
1307 struct ieee80211_mgmt *mgmt, size_t len)
1309 struct sta_info *sta;
1313 end = mgmt->u.action.u.sa_query_resp.trans_id +
1314 WLAN_SA_QUERY_TR_ID_LEN;
1315 if (((u8 *) mgmt) + len < end) {
1316 wpa_printf(MSG_DEBUG, "IEEE 802.11: Too short SA Query Action "
1317 "frame (len=%lu)", (unsigned long) len);
1321 if (mgmt->u.action.u.sa_query_resp.action != WLAN_SA_QUERY_RESPONSE) {
1322 wpa_printf(MSG_DEBUG, "IEEE 802.11: Unexpected SA Query "
1323 "Action %d", mgmt->u.action.u.sa_query_resp.action);
1327 /* MLME-SAQuery.confirm */
1329 sta = ap_get_sta(hapd, mgmt->sa);
1330 if (sta == NULL || sta->sa_query_trans_id == NULL) {
1331 wpa_printf(MSG_DEBUG, "IEEE 802.11: No matching STA with "
1332 "pending SA Query request found");
1336 for (i = 0; i < sta->sa_query_count; i++) {
1337 if (os_memcmp(sta->sa_query_trans_id +
1338 i * WLAN_SA_QUERY_TR_ID_LEN,
1339 mgmt->u.action.u.sa_query_resp.trans_id,
1340 WLAN_SA_QUERY_TR_ID_LEN) == 0)
1344 if (i >= sta->sa_query_count) {
1345 wpa_printf(MSG_DEBUG, "IEEE 802.11: No matching SA Query "
1346 "transaction identifier found");
1350 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1351 HOSTAPD_LEVEL_DEBUG,
1352 "Reply to pending SA Query received");
1353 ap_sta_stop_sa_query(hapd, sta);
1355 #endif /* CONFIG_IEEE80211W */
1358 static void handle_action(struct hostapd_data *hapd,
1359 struct ieee80211_mgmt *mgmt, size_t len)
1361 if (len < IEEE80211_HDRLEN + 1) {
1362 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1363 HOSTAPD_LEVEL_DEBUG,
1364 "handle_action - too short payload (len=%lu)",
1365 (unsigned long) len);
1369 switch (mgmt->u.action.category) {
1370 #ifdef CONFIG_IEEE80211R
1371 case WLAN_ACTION_FT:
1373 struct sta_info *sta;
1375 sta = ap_get_sta(hapd, mgmt->sa);
1376 if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) {
1377 wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignored FT Action "
1378 "frame from unassociated STA " MACSTR,
1383 if (wpa_ft_action_rx(sta->wpa_sm, (u8 *) &mgmt->u.action,
1384 len - IEEE80211_HDRLEN))
1389 #endif /* CONFIG_IEEE80211R */
1390 case WLAN_ACTION_WMM:
1391 hostapd_wmm_action(hapd, mgmt, len);
1393 #ifdef CONFIG_IEEE80211W
1394 case WLAN_ACTION_SA_QUERY:
1395 hostapd_sa_query_action(hapd, mgmt, len);
1397 #endif /* CONFIG_IEEE80211W */
1400 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1401 HOSTAPD_LEVEL_DEBUG,
1402 "handle_action - unknown action category %d or invalid "
1404 mgmt->u.action.category);
1405 if (!(mgmt->da[0] & 0x01) && !(mgmt->u.action.category & 0x80) &&
1406 !(mgmt->sa[0] & 0x01)) {
1408 * IEEE 802.11-REVma/D9.0 - 7.3.1.11
1409 * Return the Action frame to the source without change
1410 * except that MSB of the Category set to 1.
1412 wpa_printf(MSG_DEBUG, "IEEE 802.11: Return unknown Action "
1413 "frame back to sender");
1414 os_memcpy(mgmt->da, mgmt->sa, ETH_ALEN);
1415 os_memcpy(mgmt->sa, hapd->own_addr, ETH_ALEN);
1416 os_memcpy(mgmt->bssid, hapd->own_addr, ETH_ALEN);
1417 mgmt->u.action.category |= 0x80;
1419 hostapd_send_mgmt_frame(hapd, mgmt, len);
1425 * ieee802_11_mgmt - process incoming IEEE 802.11 management frames
1426 * @hapd: hostapd BSS data structure (the BSS to which the management frame was
1428 * @buf: management frame data (starting from IEEE 802.11 header)
1429 * @len: length of frame data in octets
1430 * @stype: management frame subtype from frame control field
1431 * @fi: meta data about received frame (signal level, etc.)
1433 * Process all incoming IEEE 802.11 management frames. This will be called for
1434 * each frame received from the kernel driver through wlan#ap interface. In
1435 * addition, it can be called to re-inserted pending frames (e.g., when using
1436 * external RADIUS server as an MAC ACL).
1438 void ieee802_11_mgmt(struct hostapd_data *hapd, u8 *buf, size_t len, u16 stype,
1439 struct hostapd_frame_info *fi)
1441 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) buf;
1444 if (stype == WLAN_FC_STYPE_BEACON) {
1445 handle_beacon(hapd, mgmt, len, fi);
1449 broadcast = mgmt->bssid[0] == 0xff && mgmt->bssid[1] == 0xff &&
1450 mgmt->bssid[2] == 0xff && mgmt->bssid[3] == 0xff &&
1451 mgmt->bssid[4] == 0xff && mgmt->bssid[5] == 0xff;
1454 os_memcmp(mgmt->bssid, hapd->own_addr, ETH_ALEN) != 0) {
1455 printf("MGMT: BSSID=" MACSTR " not our address\n",
1456 MAC2STR(mgmt->bssid));
1461 if (stype == WLAN_FC_STYPE_PROBE_REQ) {
1462 handle_probe_req(hapd, mgmt, len);
1466 if (os_memcmp(mgmt->da, hapd->own_addr, ETH_ALEN) != 0) {
1467 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1468 HOSTAPD_LEVEL_DEBUG,
1469 "MGMT: DA=" MACSTR " not our address",
1475 case WLAN_FC_STYPE_AUTH:
1476 wpa_printf(MSG_DEBUG, "mgmt::auth");
1477 handle_auth(hapd, mgmt, len);
1479 case WLAN_FC_STYPE_ASSOC_REQ:
1480 wpa_printf(MSG_DEBUG, "mgmt::assoc_req");
1481 handle_assoc(hapd, mgmt, len, 0);
1483 case WLAN_FC_STYPE_REASSOC_REQ:
1484 wpa_printf(MSG_DEBUG, "mgmt::reassoc_req");
1485 handle_assoc(hapd, mgmt, len, 1);
1487 case WLAN_FC_STYPE_DISASSOC:
1488 wpa_printf(MSG_DEBUG, "mgmt::disassoc");
1489 handle_disassoc(hapd, mgmt, len);
1491 case WLAN_FC_STYPE_DEAUTH:
1492 wpa_printf(MSG_DEBUG, "mgmt::deauth");
1493 handle_deauth(hapd, mgmt, len);
1495 case WLAN_FC_STYPE_ACTION:
1496 wpa_printf(MSG_DEBUG, "mgmt::action");
1497 handle_action(hapd, mgmt, len);
1500 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
1501 HOSTAPD_LEVEL_DEBUG,
1502 "unknown mgmt frame subtype %d", stype);
1508 static void handle_auth_cb(struct hostapd_data *hapd,
1509 struct ieee80211_mgmt *mgmt,
1512 u16 auth_alg, auth_transaction, status_code;
1513 struct sta_info *sta;
1516 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1517 HOSTAPD_LEVEL_NOTICE,
1518 "did not acknowledge authentication response");
1522 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
1523 printf("handle_auth_cb - too short payload (len=%lu)\n",
1524 (unsigned long) len);
1528 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
1529 auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
1530 status_code = le_to_host16(mgmt->u.auth.status_code);
1532 sta = ap_get_sta(hapd, mgmt->da);
1534 printf("handle_auth_cb: STA " MACSTR " not found\n",
1539 if (status_code == WLAN_STATUS_SUCCESS &&
1540 ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) ||
1541 (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) {
1542 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1543 HOSTAPD_LEVEL_INFO, "authenticated");
1544 sta->flags |= WLAN_STA_AUTH;
1549 #ifdef CONFIG_IEEE80211N
1551 hostapd_get_ht_capab(struct hostapd_data *hapd,
1552 struct ht_cap_ie *ht_cap_ie,
1553 struct ht_cap_ie *neg_ht_cap_ie)
1556 os_memcpy(neg_ht_cap_ie, ht_cap_ie, sizeof(struct ht_cap_ie));
1557 neg_ht_cap_ie->data.capabilities_info =
1558 ht_cap_ie->data.capabilities_info & hapd->iconf->ht_capab;
1560 neg_ht_cap_ie->data.capabilities_info &= ~HT_CAP_INFO_SMPS_DISABLED;
1561 if ((ht_cap_ie->data.capabilities_info & HT_CAP_INFO_SMPS_DISABLED) ==
1562 (hapd->iconf->ht_capab & HT_CAP_INFO_SMPS_DISABLED))
1563 neg_ht_cap_ie->data.capabilities_info |=
1564 hapd->iconf->ht_capab & HT_CAP_INFO_SMPS_DISABLED;
1566 neg_ht_cap_ie->data.capabilities_info |=
1567 HT_CAP_INFO_SMPS_DISABLED;
1569 /* FIXME: Rx STBC needs to be handled specially */
1570 neg_ht_cap_ie->data.capabilities_info &= ~HT_CAP_INFO_RX_STBC_MASK;
1571 neg_ht_cap_ie->data.capabilities_info |=
1572 hapd->iconf->ht_capab & HT_CAP_INFO_RX_STBC_MASK;
1574 #endif /* CONFIG_IEEE80211N */
1577 static void handle_assoc_cb(struct hostapd_data *hapd,
1578 struct ieee80211_mgmt *mgmt,
1579 size_t len, int reassoc, int ok)
1582 struct sta_info *sta;
1584 #ifdef CONFIG_IEEE80211N
1585 struct ht_cap_ie ht_cap;
1586 #endif /* CONFIG_IEEE80211N */
1587 struct ht_cap_ie *ht_cap_ptr = NULL;
1590 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
1591 HOSTAPD_LEVEL_DEBUG,
1592 "did not acknowledge association response");
1596 if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_resp) :
1597 sizeof(mgmt->u.assoc_resp))) {
1598 printf("handle_assoc_cb(reassoc=%d) - too short payload "
1599 "(len=%lu)\n", reassoc, (unsigned long) len);
1604 status = le_to_host16(mgmt->u.reassoc_resp.status_code);
1606 status = le_to_host16(mgmt->u.assoc_resp.status_code);
1608 sta = ap_get_sta(hapd, mgmt->da);
1610 printf("handle_assoc_cb: STA " MACSTR " not found\n",
1615 if (status != WLAN_STATUS_SUCCESS)
1618 /* Stop previous accounting session, if one is started, and allocate
1619 * new session id for the new session. */
1620 accounting_sta_stop(hapd, sta);
1622 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1624 "associated (aid %d)",
1627 if (sta->flags & WLAN_STA_ASSOC)
1629 sta->flags |= WLAN_STA_ASSOC;
1630 if (!hapd->conf->ieee802_1x && !hapd->conf->wpa) {
1631 /* Open or static WEP; no separate authorization */
1632 sta->flags |= WLAN_STA_AUTHORIZED;
1636 mlme_reassociate_indication(hapd, sta);
1638 mlme_associate_indication(hapd, sta);
1640 #ifdef CONFIG_IEEE80211N
1641 if (sta->flags & WLAN_STA_HT) {
1642 ht_cap_ptr = &ht_cap;
1643 hostapd_get_ht_capab(hapd, &sta->ht_capabilities, ht_cap_ptr);
1645 #endif /* CONFIG_IEEE80211N */
1647 #ifdef CONFIG_IEEE80211W
1648 sta->sa_query_timed_out = 0;
1649 #endif /* CONFIG_IEEE80211W */
1651 if (hostapd_sta_add(hapd->conf->iface, hapd, sta->addr, sta->aid,
1652 sta->capability, sta->supported_rates,
1653 sta->supported_rates_len, 0, sta->listen_interval,
1656 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1657 HOSTAPD_LEVEL_NOTICE,
1658 "Could not add STA to kernel driver");
1661 if (sta->eapol_sm == NULL) {
1663 * This STA does not use RADIUS server for EAP authentication,
1664 * so bind it to the selected VLAN interface now, since the
1665 * interface selection is not going to change anymore.
1667 ap_sta_bind_vlan(hapd, sta, 0);
1668 } else if (sta->vlan_id) {
1669 /* VLAN ID already set (e.g., by PMKSA caching), so bind STA */
1670 ap_sta_bind_vlan(hapd, sta, 0);
1672 if (sta->flags & WLAN_STA_SHORT_PREAMBLE) {
1673 hostapd_sta_set_flags(hapd, sta->addr, sta->flags,
1674 WLAN_STA_SHORT_PREAMBLE, ~0);
1676 hostapd_sta_set_flags(hapd, sta->addr, sta->flags,
1677 0, ~WLAN_STA_SHORT_PREAMBLE);
1680 if (sta->auth_alg == WLAN_AUTH_FT)
1681 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC_FT);
1683 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC);
1684 hostapd_new_assoc_sta(hapd, sta, !new_assoc);
1686 ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
1689 /* Copy of the association request is not needed anymore */
1690 if (sta->last_assoc_req) {
1691 os_free(sta->last_assoc_req);
1692 sta->last_assoc_req = NULL;
1698 * ieee802_11_mgmt_cb - Process management frame TX status callback
1699 * @hapd: hostapd BSS data structure (the BSS from which the management frame
1701 * @buf: management frame data (starting from IEEE 802.11 header)
1702 * @len: length of frame data in octets
1703 * @stype: management frame subtype from frame control field
1704 * @ok: Whether the frame was ACK'ed
1706 void ieee802_11_mgmt_cb(struct hostapd_data *hapd, u8 *buf, size_t len,
1709 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) buf;
1712 case WLAN_FC_STYPE_AUTH:
1713 wpa_printf(MSG_DEBUG, "mgmt::auth cb");
1714 handle_auth_cb(hapd, mgmt, len, ok);
1716 case WLAN_FC_STYPE_ASSOC_RESP:
1717 wpa_printf(MSG_DEBUG, "mgmt::assoc_resp cb");
1718 handle_assoc_cb(hapd, mgmt, len, 0, ok);
1720 case WLAN_FC_STYPE_REASSOC_RESP:
1721 wpa_printf(MSG_DEBUG, "mgmt::reassoc_resp cb");
1722 handle_assoc_cb(hapd, mgmt, len, 1, ok);
1724 case WLAN_FC_STYPE_PROBE_RESP:
1725 wpa_printf(MSG_DEBUG, "mgmt::proberesp cb");
1727 case WLAN_FC_STYPE_DEAUTH:
1730 case WLAN_FC_STYPE_ACTION:
1731 wpa_printf(MSG_DEBUG, "mgmt::action cb");
1734 printf("unknown mgmt cb frame subtype %d\n", stype);
1740 int ieee802_11_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
1747 int ieee802_11_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
1748 char *buf, size_t buflen)
1754 #endif /* CONFIG_NATIVE_WINDOWS */