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nl80211: Fix build with libnl 1.1
[thirdparty/hostap.git] / wpa_supplicant / sme.c
CommitLineData
c2a04078
JM		 1/*
2 * wpa_supplicant - SME
6ac4b15e 3 * Copyright (c) 2009-2014, Jouni Malinen <j@w1.fi>
c2a04078 4 *
0f3d578e
JM		 5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
c2a04078
JM		 7 */
8
9#include "includes.h"
10
11#include "common.h"
7d878ca7 12#include "utils/eloop.h"
90973fb2 13#include "common/ieee802_11_defs.h"
d9a27b04 14#include "common/ieee802_11_common.h"
c2a04078 15#include "eapol_supp/eapol_supp_sm.h"
90973fb2 16#include "common/wpa_common.h"
98efcc41 17#include "common/sae.h"
3acb5005
JM		 18#include "rsn_supp/wpa.h"
19#include "rsn_supp/pmksa_cache.h"
c2a04078
JM		 20#include "config.h"
21#include "wpa_supplicant_i.h"
2d5b792d 22#include "driver_i.h"
c2a04078
JM		 23#include "wpas_glue.h"
24#include "wps_supplicant.h"
5f3a6aa0 25#include "p2p_supplicant.h"
8bac466b 26#include "notify.h"
6fa81a3b 27#include "bss.h"
9ba9fa07 28#include "scan.h"
c2a04078 29#include "sme.h"
cb418324 30#include "hs20_supplicant.h"
c2a04078 31
e29853bb
BG		 32#define SME_AUTH_TIMEOUT 5
33#define SME_ASSOC_TIMEOUT 5
34
35static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx);
36static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx);
c3701c66 37static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx);
e29853bb
BG		 38#ifdef CONFIG_IEEE80211W
39static void sme_stop_sa_query(struct wpa_supplicant *wpa_s);
40#endif /* CONFIG_IEEE80211W */
41
42
c10347f2
JM		 43#ifdef CONFIG_SAE
44
625f202a
JM		 45static int index_within_array(const int *array, int idx)
46{
47 int i;
48 for (i = 0; i < idx; i++) {
18ca7332 49 if (array[i] <= 0)
625f202a
JM		 50 return 0;
51 }
52 return 1;
53}
54
55
56static int sme_set_sae_group(struct wpa_supplicant *wpa_s)
57{
58 int *groups = wpa_s->conf->sae_groups;
18ca7332 59 int default_groups[] = { 19, 20, 21, 25, 26, 0 };
625f202a 60
18ca7332 61 if (!groups || groups[0] <= 0)
625f202a
JM		 62 groups = default_groups;
63
64 /* Configuration may have changed, so validate current index */
65 if (!index_within_array(groups, wpa_s->sme.sae_group_index))
66 return -1;
67
68 for (;;) {
69 int group = groups[wpa_s->sme.sae_group_index];
70 if (group < 0)
71 break;
72 if (sae_set_group(&wpa_s->sme.sae, group) == 0) {
73 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected SAE group %d",
74 wpa_s->sme.sae.group);
75 return 0;
76 }
77 wpa_s->sme.sae_group_index++;
78 }
79
80 return -1;
81}
82
83
8e31e955
JM		 84static struct wpabuf * sme_auth_build_sae_commit(struct wpa_supplicant *wpa_s,
85 struct wpa_ssid *ssid,
86 const u8 *bssid)
c10347f2
JM		 87{
88 struct wpabuf *buf;
d136c376 89 size_t len;
c10347f2 90
8e31e955
JM		 91 if (ssid->passphrase == NULL) {
92 wpa_printf(MSG_DEBUG, "SAE: No password available");
93 return NULL;
94 }
95
625f202a
JM		 96 if (sme_set_sae_group(wpa_s) < 0) {
97 wpa_printf(MSG_DEBUG, "SAE: Failed to select group");
a46d72d7 98 return NULL;
625f202a 99 }
a46d72d7 100
8e31e955
JM		 101 if (sae_prepare_commit(wpa_s->own_addr, bssid,
102 (u8 *) ssid->passphrase,
103 os_strlen(ssid->passphrase),
104 &wpa_s->sme.sae) < 0) {
105 wpa_printf(MSG_DEBUG, "SAE: Could not pick PWE");
106 return NULL;
107 }
108
d136c376
JM		 109 len = wpa_s->sme.sae_token ? wpabuf_len(wpa_s->sme.sae_token) : 0;
110 buf = wpabuf_alloc(4 + SAE_COMMIT_MAX_LEN + len);
c10347f2
JM		 111 if (buf == NULL)
112 return NULL;
113
114 wpabuf_put_le16(buf, 1); /* Transaction seq# */
115 wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
d136c376 116 sae_write_commit(&wpa_s->sme.sae, buf, wpa_s->sme.sae_token);
c10347f2
JM		 117
118 return buf;
119}
120
121
122static struct wpabuf * sme_auth_build_sae_confirm(struct wpa_supplicant *wpa_s)
123{
124 struct wpabuf *buf;
125
fb8fcc29 126 buf = wpabuf_alloc(4 + SAE_CONFIRM_MAX_LEN);
c10347f2
JM		 127 if (buf == NULL)
128 return NULL;
129
130 wpabuf_put_le16(buf, 2); /* Transaction seq# */
131 wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
fb8fcc29 132 sae_write_confirm(&wpa_s->sme.sae, buf);
c10347f2
JM		 133
134 return buf;
135}
136
137#endif /* CONFIG_SAE */
138
139
b361d580
AK		 140/**
141 * sme_auth_handle_rrm - Handle RRM aspects of current authentication attempt
142 * @wpa_s: Pointer to wpa_supplicant data
143 * @bss: Pointer to the bss which is the target of authentication attempt
144 */
145static void sme_auth_handle_rrm(struct wpa_supplicant *wpa_s,
146 struct wpa_bss *bss)
147{
148 const u8 rrm_ie_len = 5;
149 u8 *pos;
150 const u8 *rrm_ie;
151
152 wpa_s->rrm.rrm_used = 0;
153
154 wpa_printf(MSG_DEBUG,
155 "RRM: Determining whether RRM can be used - device support: 0x%x",
156 wpa_s->drv_rrm_flags);
157
158 rrm_ie = wpa_bss_get_ie(bss, WLAN_EID_RRM_ENABLED_CAPABILITIES);
159 if (!rrm_ie || !(bss->caps & IEEE80211_CAP_RRM)) {
160 wpa_printf(MSG_DEBUG, "RRM: No RRM in network");
161 return;
162 }
163
164 if (!(wpa_s->drv_rrm_flags &
165 WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) ||
166 !(wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET)) {
167 wpa_printf(MSG_DEBUG,
168 "RRM: Insufficient RRM support in driver - do not use RRM");
169 return;
170 }
171
849367af
JM		 172 if (sizeof(wpa_s->sme.assoc_req_ie) <
173 wpa_s->sme.assoc_req_ie_len + rrm_ie_len + 2) {
b361d580
AK		 174 wpa_printf(MSG_INFO,
175 "RRM: Unable to use RRM, no room for RRM IE");
176 return;
177 }
178
179 wpa_printf(MSG_DEBUG, "RRM: Adding RRM IE to Association Request");
180 pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
b361d580
AK		 181 os_memset(pos, 0, 2 + rrm_ie_len);
182 *pos++ = WLAN_EID_RRM_ENABLED_CAPABILITIES;
183 *pos++ = rrm_ie_len;
70d1e728
AO		 184
185 /* Set supported capabilites flags */
186 if (wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION)
187 *pos |= WLAN_RRM_CAPS_LINK_MEASUREMENT;
188
b361d580
AK		 189 wpa_s->sme.assoc_req_ie_len += rrm_ie_len + 2;
190 wpa_s->rrm.rrm_used = 1;
191}
192
193
215ae884
JM		 194static void sme_send_authentication(struct wpa_supplicant *wpa_s,
195 struct wpa_bss *bss, struct wpa_ssid *ssid,
196 int start)
c2a04078
JM		 197{
198 struct wpa_driver_auth_params params;
8bac466b 199 struct wpa_ssid *old_ssid;
fdbe50ed 200#ifdef CONFIG_IEEE80211R
c2a04078 201 const u8 *ie;
fdbe50ed 202#endif /* CONFIG_IEEE80211R */
c2a04078
JM		 203#ifdef CONFIG_IEEE80211R
204 const u8 *md = NULL;
205#endif /* CONFIG_IEEE80211R */
8bac466b 206 int i, bssid_changed;
c10347f2 207 struct wpabuf *resp = NULL;
0bbaa9b9 208 u8 ext_capab[18];
03e47c9c 209 int ext_capab_len;
c2a04078
JM		 210
211 if (bss == NULL) {
f049052b
BG		 212 wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for "
213 "the network");
6ac4b15e 214 wpas_connect_work_done(wpa_s);
c2a04078
JM		 215 return;
216 }
217
8f770587
JM		 218 wpa_s->current_bss = bss;
219
c2a04078
JM		 220 os_memset(&params, 0, sizeof(params));
221 wpa_s->reassociate = 0;
222
223 params.freq = bss->freq;
224 params.bssid = bss->bssid;
6fa81a3b
JM		 225 params.ssid = bss->ssid;
226 params.ssid_len = bss->ssid_len;
2f4f73b1 227 params.p2p = ssid->p2p_group;
c2a04078 228
62fa124c
JM		 229 if (wpa_s->sme.ssid_len != params.ssid_len ||
230 os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0)
231 wpa_s->sme.prev_bssid_set = 0;
232
c2a04078
JM		 233 wpa_s->sme.freq = params.freq;
234 os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len);
235 wpa_s->sme.ssid_len = params.ssid_len;
236
abd9fafa 237 params.auth_alg = WPA_AUTH_ALG_OPEN;
c2a04078
JM		 238#ifdef IEEE8021X_EAPOL
239 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
240 if (ssid->leap) {
241 if (ssid->non_leap == 0)
abd9fafa 242 params.auth_alg = WPA_AUTH_ALG_LEAP;
c2a04078 243 else
abd9fafa 244 params.auth_alg |= WPA_AUTH_ALG_LEAP;
c2a04078
JM		 245 }
246 }
247#endif /* IEEE8021X_EAPOL */
f049052b
BG		 248 wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x",
249 params.auth_alg);
c2a04078 250 if (ssid->auth_alg) {
abd9fafa 251 params.auth_alg = ssid->auth_alg;
f049052b
BG		 252 wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: "
253 "0x%x", params.auth_alg);
c2a04078 254 }
c10347f2 255#ifdef CONFIG_SAE
bc26ac50 256 wpa_s->sme.sae_pmksa_caching = 0;
c10347f2
JM		 257 if (wpa_key_mgmt_sae(ssid->key_mgmt)) {
258 const u8 *rsn;
259 struct wpa_ie_data ied;
260
261 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
267ac3bc
JM		 262 if (!rsn) {
263 wpa_dbg(wpa_s, MSG_DEBUG,
264 "SAE enabled, but target BSS does not advertise RSN");
265 } else if (wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0 &&
266 wpa_key_mgmt_sae(ied.key_mgmt)) {
267 wpa_dbg(wpa_s, MSG_DEBUG, "Using SAE auth_alg");
268 params.auth_alg = WPA_AUTH_ALG_SAE;
269 } else {
270 wpa_dbg(wpa_s, MSG_DEBUG,
271 "SAE enabled, but target BSS does not advertise SAE AKM for RSN");
c10347f2
JM		 272 }
273 }
274#endif /* CONFIG_SAE */
c2a04078 275
a0b2f99b
JM		 276 for (i = 0; i < NUM_WEP_KEYS; i++) {
277 if (ssid->wep_key_len[i])
278 params.wep_key[i] = ssid->wep_key[i];
279 params.wep_key_len[i] = ssid->wep_key_len[i];
280 }
281 params.wep_tx_keyidx = ssid->wep_tx_keyidx;
282
8bac466b 283 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
c2a04078
JM		 284 os_memset(wpa_s->bssid, 0, ETH_ALEN);
285 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
8bac466b
JM		 286 if (bssid_changed)
287 wpas_notify_bssid_changed(wpa_s);
c2a04078 288
f337f0e9
JM		 289 if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
290 wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
0bf927a0 291 wpa_key_mgmt_wpa(ssid->key_mgmt)) {
c2a04078 292 int try_opportunistic;
6e202021
JM		 293 try_opportunistic = (ssid->proactive_key_caching < 0 ?
294 wpa_s->conf->okc :
295 ssid->proactive_key_caching) &&
c2a04078
JM		 296 (ssid->proto & WPA_PROTO_RSN);
297 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
298 wpa_s->current_ssid,
299 try_opportunistic) == 0)
300 eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
301 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
302 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
303 wpa_s->sme.assoc_req_ie,
304 &wpa_s->sme.assoc_req_ie_len)) {
f049052b
BG		 305 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
306 "key management and encryption suites");
6ac4b15e 307 wpas_connect_work_done(wpa_s);
c2a04078
JM		 308 return;
309 }
a3f7e518
JM		 310 } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
311 wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) {
312 /*
313 * Both WPA and non-WPA IEEE 802.1X enabled in configuration -
314 * use non-WPA since the scan results did not indicate that the
315 * AP is using WPA or WPA2.
316 */
317 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
318 wpa_s->sme.assoc_req_ie_len = 0;
0bf927a0 319 } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
c2a04078
JM		 320 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
321 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
322 wpa_s->sme.assoc_req_ie,
323 &wpa_s->sme.assoc_req_ie_len)) {
f049052b
BG		 324 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
325 "key management and encryption suites (no "
326 "scan results)");
6ac4b15e 327 wpas_connect_work_done(wpa_s);
c2a04078
JM		 328 return;
329 }
330#ifdef CONFIG_WPS
331 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
332 struct wpabuf *wps_ie;
333 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
334 if (wps_ie && wpabuf_len(wps_ie) <=
335 sizeof(wpa_s->sme.assoc_req_ie)) {
336 wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie);
337 os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie),
338 wpa_s->sme.assoc_req_ie_len);
339 } else
340 wpa_s->sme.assoc_req_ie_len = 0;
341 wpabuf_free(wps_ie);
342 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
343#endif /* CONFIG_WPS */
344 } else {
345 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
346 wpa_s->sme.assoc_req_ie_len = 0;
347 }
348
349#ifdef CONFIG_IEEE80211R
6fa81a3b 350 ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
c2a04078
JM		 351 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
352 md = ie + 2;
e7846b68 353 wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
c2a04078
JM		 354 if (md) {
355 /* Prepare for the next transition */
76b7981d 356 wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
c2a04078
JM		 357 }
358
0bf927a0 359 if (md && wpa_key_mgmt_ft(ssid->key_mgmt)) {
c2a04078
JM		 360 if (wpa_s->sme.assoc_req_ie_len + 5 <
361 sizeof(wpa_s->sme.assoc_req_ie)) {
362 struct rsn_mdie *mdie;
363 u8 *pos = wpa_s->sme.assoc_req_ie +
364 wpa_s->sme.assoc_req_ie_len;
365 *pos++ = WLAN_EID_MOBILITY_DOMAIN;
366 *pos++ = sizeof(*mdie);
367 mdie = (struct rsn_mdie *) pos;
368 os_memcpy(mdie->mobility_domain, md,
369 MOBILITY_DOMAIN_ID_LEN);
f4ec630d 370 mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN];
c2a04078
JM		 371 wpa_s->sme.assoc_req_ie_len += 5;
372 }
373
374 if (wpa_s->sme.ft_used &&
0d7b4409
JM		 375 os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 &&
376 wpa_sm_has_ptk(wpa_s->wpa)) {
f049052b
BG		 377 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT "
378 "over-the-air");
abd9fafa 379 params.auth_alg = WPA_AUTH_ALG_FT;
c2a04078
JM		 380 params.ie = wpa_s->sme.ft_ies;
381 params.ie_len = wpa_s->sme.ft_ies_len;
382 }
383 }
384#endif /* CONFIG_IEEE80211R */
385
386#ifdef CONFIG_IEEE80211W
62d49803
JM		 387 wpa_s->sme.mfp = ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
388 wpa_s->conf->pmf : ssid->ieee80211w;
389 if (wpa_s->sme.mfp != NO_MGMT_FRAME_PROTECTION) {
6fa81a3b 390 const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
c2a04078
JM		 391 struct wpa_ie_data _ie;
392 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 &&
393 _ie.capabilities &
394 (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
f049052b
BG		 395 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports "
396 "MFP: require MFP");
c2a04078
JM		 397 wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED;
398 }
399 }
400#endif /* CONFIG_IEEE80211W */
401
5f3a6aa0
JM		 402#ifdef CONFIG_P2P
403 if (wpa_s->global->p2p) {
404 u8 *pos;
405 size_t len;
406 int res;
5f3a6aa0
JM		 407 pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
408 len = sizeof(wpa_s->sme.assoc_req_ie) -
409 wpa_s->sme.assoc_req_ie_len;
ffad8858
JM		 410 res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len,
411 ssid->p2p_group);
5f3a6aa0
JM		 412 if (res >= 0)
413 wpa_s->sme.assoc_req_ie_len += res;
414 }
415#endif /* CONFIG_P2P */
416
cb418324 417#ifdef CONFIG_HS20
55a2df43 418 if (is_hs20_network(wpa_s, ssid, bss)) {
cb418324
JM		 419 struct wpabuf *hs20;
420 hs20 = wpabuf_alloc(20);
421 if (hs20) {
f9cd147d 422 int pps_mo_id = hs20_get_pps_mo_id(wpa_s, ssid);
745ef184
JM		 423 size_t len;
424
f9cd147d 425 wpas_hs20_add_indication(hs20, pps_mo_id);
745ef184
JM		 426 len = sizeof(wpa_s->sme.assoc_req_ie) -
427 wpa_s->sme.assoc_req_ie_len;
428 if (wpabuf_len(hs20) <= len) {
429 os_memcpy(wpa_s->sme.assoc_req_ie +
430 wpa_s->sme.assoc_req_ie_len,
431 wpabuf_head(hs20), wpabuf_len(hs20));
432 wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20);
433 }
cb418324
JM		 434 wpabuf_free(hs20);
435 }
436 }
437#endif /* CONFIG_HS20 */
438
0bbaa9b9
JM		 439 ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab,
440 sizeof(ext_capab));
03e47c9c 441 if (ext_capab_len > 0) {
92cbcf91
JM		 442 u8 *pos = wpa_s->sme.assoc_req_ie;
443 if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN)
444 pos += 2 + pos[1];
03e47c9c 445 os_memmove(pos + ext_capab_len, pos,
92cbcf91
JM		 446 wpa_s->sme.assoc_req_ie_len -
447 (pos - wpa_s->sme.assoc_req_ie));
03e47c9c
JM		 448 wpa_s->sme.assoc_req_ie_len += ext_capab_len;
449 os_memcpy(pos, ext_capab, ext_capab_len);
92cbcf91 450 }
92cbcf91 451
d29fa3a7
JM		 452 if (wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ]) {
453 struct wpabuf *buf = wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ];
454 size_t len;
455
456 len = sizeof(wpa_s->sme.assoc_req_ie) -
457 wpa_s->sme.assoc_req_ie_len;
458 if (wpabuf_len(buf) <= len) {
459 os_memcpy(wpa_s->sme.assoc_req_ie +
460 wpa_s->sme.assoc_req_ie_len,
461 wpabuf_head(buf), wpabuf_len(buf));
462 wpa_s->sme.assoc_req_ie_len += wpabuf_len(buf);
463 }
464 }
465
b361d580
AK		 466 sme_auth_handle_rrm(wpa_s, bss);
467
c10347f2 468#ifdef CONFIG_SAE
bc26ac50
JM		 469 if (params.auth_alg == WPA_AUTH_ALG_SAE &&
470 pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, ssid, 0) == 0)
471 {
472 wpa_dbg(wpa_s, MSG_DEBUG,
473 "PMKSA cache entry found - try to use PMKSA caching instead of new SAE authentication");
474 params.auth_alg = WPA_AUTH_ALG_OPEN;
475 wpa_s->sme.sae_pmksa_caching = 1;
476 }
477
c10347f2
JM		 478 if (params.auth_alg == WPA_AUTH_ALG_SAE) {
479 if (start)
8e31e955
JM		 480 resp = sme_auth_build_sae_commit(wpa_s, ssid,
481 bss->bssid);
c10347f2
JM		 482 else
483 resp = sme_auth_build_sae_confirm(wpa_s);
6ac4b15e 484 if (resp == NULL) {
81648d00 485 wpas_connection_failed(wpa_s, bss->bssid);
c10347f2 486 return;
6ac4b15e 487 }
c10347f2
JM		 488 params.sae_data = wpabuf_head(resp);
489 params.sae_data_len = wpabuf_len(resp);
dd43026a 490 wpa_s->sme.sae.state = start ? SAE_COMMITTED : SAE_CONFIRMED;
c10347f2
JM		 491 }
492#endif /* CONFIG_SAE */
493
a4cba8f1 494 wpa_supplicant_cancel_sched_scan(wpa_s);
c2a04078
JM		 495 wpa_supplicant_cancel_scan(wpa_s);
496
f049052b 497 wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR
c2a04078
JM		 498 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
499 wpa_ssid_txt(params.ssid, params.ssid_len), params.freq);
500
501 wpa_clear_keys(wpa_s, bss->bssid);
502 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
8bac466b 503 old_ssid = wpa_s->current_ssid;
c2a04078
JM		 504 wpa_s->current_ssid = ssid;
505 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
506 wpa_supplicant_initiate_eapol(wpa_s);
8bac466b
JM		 507 if (old_ssid != wpa_s->current_ssid)
508 wpas_notify_network_changed(wpa_s);
c2a04078 509
d0df6437
IP		 510#ifdef CONFIG_P2P
511 /*
512 * If multi-channel concurrency is not supported, check for any
513 * frequency conflict. In case of any frequency conflict, remove the
514 * least prioritized connection.
515 */
516 if (wpa_s->num_multichan_concurrent < 2) {
517 int freq, num;
518 num = get_shared_radio_freqs(wpa_s, &freq, 1);
519 if (num > 0 && freq > 0 && freq != params.freq) {
520 wpa_printf(MSG_DEBUG,
521 "Conflicting frequency found (%d != %d)",
522 freq, params.freq);
523 if (wpas_p2p_handle_frequency_conflicts(wpa_s,
524 params.freq,
525 ssid) < 0) {
526 wpas_connection_failed(wpa_s, bss->bssid);
527 wpa_supplicant_mark_disassoc(wpa_s);
528 wpabuf_free(resp);
529 wpas_connect_work_done(wpa_s);
530 return;
531 }
532 }
533 }
534#endif /* CONFIG_P2P */
535
62c72d72 536 wpa_s->sme.auth_alg = params.auth_alg;
c2a04078 537 if (wpa_drv_authenticate(wpa_s, &params) < 0) {
f049052b 538 wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the "
c2a04078 539 "driver failed");
ed57c590 540 wpas_connection_failed(wpa_s, bss->bssid);
1193dc8f 541 wpa_supplicant_mark_disassoc(wpa_s);
c10347f2 542 wpabuf_free(resp);
6ac4b15e 543 wpas_connect_work_done(wpa_s);
c2a04078
JM		 544 return;
545 }
546
e29853bb
BG		 547 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
548 NULL);
c2a04078
JM		 549
550 /*
551 * Association will be started based on the authentication event from
552 * the driver.
553 */
c10347f2
JM		 554
555 wpabuf_free(resp);
556}
557
558
6ac4b15e
JM		 559static void sme_auth_start_cb(struct wpa_radio_work *work, int deinit)
560{
561 struct wpa_connect_work *cwork = work->ctx;
562 struct wpa_supplicant *wpa_s = work->wpa_s;
563
564 if (deinit) {
b3253ebb
AO		 565 if (work->started)
566 wpa_s->connect_work = NULL;
567
6ac4b15e
JM		 568 wpas_connect_work_free(cwork);
569 return;
570 }
571
572 wpa_s->connect_work = work;
573
a7f5271d
JM		 574 if (cwork->bss_removed ||
575 !wpas_valid_bss_ssid(wpa_s, cwork->bss, cwork->ssid)) {
6ac4b15e
JM		 576 wpa_dbg(wpa_s, MSG_DEBUG, "SME: BSS/SSID entry for authentication not valid anymore - drop connection attempt");
577 wpas_connect_work_done(wpa_s);
578 return;
579 }
580
581 sme_send_authentication(wpa_s, cwork->bss, cwork->ssid, 1);
582}
583
584
c10347f2
JM		 585void sme_authenticate(struct wpa_supplicant *wpa_s,
586 struct wpa_bss *bss, struct wpa_ssid *ssid)
587{
6ac4b15e
JM		 588 struct wpa_connect_work *cwork;
589
590 if (bss == NULL || ssid == NULL)
591 return;
592 if (wpa_s->connect_work) {
593 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reject sme_authenticate() call since connect_work exist");
594 return;
595 }
596
f0e30c84 597 if (radio_work_pending(wpa_s, "sme-connect")) {
f1c4dbf5
IP		 598 /*
599 * The previous sme-connect work might no longer be valid due to
600 * the fact that the BSS list was updated. In addition, it makes
601 * sense to adhere to the 'newer' decision.
602 */
603 wpa_dbg(wpa_s, MSG_DEBUG,
604 "SME: Remove previous pending sme-connect");
605 radio_remove_works(wpa_s, "sme-connect", 0);
f0e30c84
JM		 606 }
607
6ac4b15e
JM		 608 cwork = os_zalloc(sizeof(*cwork));
609 if (cwork == NULL)
610 return;
611 cwork->bss = bss;
612 cwork->ssid = ssid;
613 cwork->sme = 1;
614
98efcc41 615#ifdef CONFIG_SAE
dd43026a 616 wpa_s->sme.sae.state = SAE_NOTHING;
98efcc41 617 wpa_s->sme.sae.send_confirm = 0;
18ca7332 618 wpa_s->sme.sae_group_index = 0;
98efcc41 619#endif /* CONFIG_SAE */
6ac4b15e
JM		 620
621 if (radio_add_work(wpa_s, bss->freq, "sme-connect", 1,
622 sme_auth_start_cb, cwork) < 0)
623 wpas_connect_work_free(cwork);
c2a04078
JM		 624}
625
626
c10347f2 627#ifdef CONFIG_SAE
21af6d15 628
c10347f2
JM		 629static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction,
630 u16 status_code, const u8 *data, size_t len)
631{
a959a3b6
MH		 632 int *groups;
633
c10347f2
JM		 634 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u "
635 "status code %u", auth_transaction, status_code);
c10347f2 636
d136c376
JM		 637 if (auth_transaction == 1 &&
638 status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ &&
639 wpa_s->sme.sae.state == SAE_COMMITTED &&
640 wpa_s->current_bss && wpa_s->current_ssid) {
a959a3b6
MH		 641 int default_groups[] = { 19, 20, 21, 25, 26, 0 };
642 u16 group;
643
644 groups = wpa_s->conf->sae_groups;
645 if (!groups || groups[0] <= 0)
646 groups = default_groups;
647
648 if (len < sizeof(le16)) {
649 wpa_dbg(wpa_s, MSG_DEBUG,
650 "SME: Too short SAE anti-clogging token request");
651 return -1;
652 }
653 group = WPA_GET_LE16(data);
654 wpa_dbg(wpa_s, MSG_DEBUG,
655 "SME: SAE anti-clogging token requested (group %u)",
656 group);
657 if (sae_group_allowed(&wpa_s->sme.sae, groups, group) !=
658 WLAN_STATUS_SUCCESS) {
659 wpa_dbg(wpa_s, MSG_ERROR,
660 "SME: SAE group %u of anti-clogging request is invalid",
661 group);
662 return -1;
663 }
d136c376 664 wpabuf_free(wpa_s->sme.sae_token);
a959a3b6
MH		 665 wpa_s->sme.sae_token = wpabuf_alloc_copy(data + sizeof(le16),
666 len - sizeof(le16));
d136c376
JM		 667 sme_send_authentication(wpa_s, wpa_s->current_bss,
668 wpa_s->current_ssid, 1);
669 return 0;
670 }
671
625f202a
JM		 672 if (auth_transaction == 1 &&
673 status_code == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED &&
674 wpa_s->sme.sae.state == SAE_COMMITTED &&
675 wpa_s->current_bss && wpa_s->current_ssid) {
676 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE group not supported");
677 wpa_s->sme.sae_group_index++;
678 if (sme_set_sae_group(wpa_s) < 0)
679 return -1; /* no other groups enabled */
680 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Try next enabled SAE group");
681 sme_send_authentication(wpa_s, wpa_s->current_bss,
682 wpa_s->current_ssid, 1);
683 return 0;
684 }
685
c10347f2
JM		 686 if (status_code != WLAN_STATUS_SUCCESS)
687 return -1;
688
689 if (auth_transaction == 1) {
a959a3b6 690 groups = wpa_s->conf->sae_groups;
18ca7332 691
c10347f2
JM		 692 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit");
693 if (wpa_s->current_bss == NULL ||
694 wpa_s->current_ssid == NULL)
695 return -1;
dd43026a 696 if (wpa_s->sme.sae.state != SAE_COMMITTED)
21af6d15 697 return -1;
18ca7332
JM		 698 if (groups && groups[0] <= 0)
699 groups = NULL;
625f202a 700 if (sae_parse_commit(&wpa_s->sme.sae, data, len, NULL, NULL,
18ca7332 701 groups) != WLAN_STATUS_SUCCESS)
21af6d15 702 return -1;
146f6c9a
JM		 703
704 if (sae_process_commit(&wpa_s->sme.sae) < 0) {
705 wpa_printf(MSG_DEBUG, "SAE: Failed to process peer "
706 "commit");
707 return -1;
708 }
709
d136c376
JM		 710 wpabuf_free(wpa_s->sme.sae_token);
711 wpa_s->sme.sae_token = NULL;
c10347f2
JM		 712 sme_send_authentication(wpa_s, wpa_s->current_bss,
713 wpa_s->current_ssid, 0);
714 return 0;
715 } else if (auth_transaction == 2) {
716 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm");
dd43026a 717 if (wpa_s->sme.sae.state != SAE_CONFIRMED)
21af6d15 718 return -1;
f2e9818f 719 if (sae_check_confirm(&wpa_s->sme.sae, data, len) < 0)
21af6d15 720 return -1;
dd43026a 721 wpa_s->sme.sae.state = SAE_ACCEPTED;
b4fd3613 722 sae_clear_temp_data(&wpa_s->sme.sae);
c10347f2
JM		 723 return 1;
724 }
725
726 return -1;
727}
728#endif /* CONFIG_SAE */
729
730
c2a04078
JM		 731void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
732{
c2a04078
JM		 733 struct wpa_ssid *ssid = wpa_s->current_ssid;
734
735 if (ssid == NULL) {
f049052b
BG		 736 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
737 "when network is not selected");
c2a04078
JM		 738 return;
739 }
740
741 if (wpa_s->wpa_state != WPA_AUTHENTICATING) {
f049052b
BG		 742 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
743 "when not in authenticating state");
c2a04078
JM		 744 return;
745 }
746
747 if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) {
f049052b
BG		 748 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with "
749 "unexpected peer " MACSTR,
750 MAC2STR(data->auth.peer));
c2a04078
JM		 751 return;
752 }
753
f049052b 754 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR
c10347f2 755 " auth_type=%d auth_transaction=%d status_code=%d",
f049052b 756 MAC2STR(data->auth.peer), data->auth.auth_type,
c10347f2 757 data->auth.auth_transaction, data->auth.status_code);
c2a04078
JM		 758 wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs",
759 data->auth.ies, data->auth.ies_len);
760
e29853bb
BG		 761 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
762
c10347f2
JM		 763#ifdef CONFIG_SAE
764 if (data->auth.auth_type == WLAN_AUTH_SAE) {
21af6d15
JM		 765 int res;
766 res = sme_sae_auth(wpa_s, data->auth.auth_transaction,
767 data->auth.status_code, data->auth.ies,
768 data->auth.ies_len);
769 if (res < 0) {
770 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
771 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
772
773 }
774 if (res != 1)
c10347f2 775 return;
47b55a3e
JM		 776
777 wpa_printf(MSG_DEBUG, "SME: SAE completed - setting PMK for "
778 "4-way handshake");
bc26ac50
JM		 779 wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN,
780 wpa_s->pending_bssid);
c10347f2
JM		 781 }
782#endif /* CONFIG_SAE */
783
c2a04078 784 if (data->auth.status_code != WLAN_STATUS_SUCCESS) {
f049052b
BG		 785 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication failed (status "
786 "code %d)", data->auth.status_code);
cb1583f6
SO		 787
788 if (data->auth.status_code !=
789 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG ||
790 wpa_s->sme.auth_alg == data->auth.auth_type ||
7e6646c7 791 wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) {
0fb337c1 792 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
c1c02342 793 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
cb1583f6 794 return;
7e6646c7 795 }
cb1583f6 796
d9504779
JM		 797 wpas_connect_work_done(wpa_s);
798
cb1583f6
SO		 799 switch (data->auth.auth_type) {
800 case WLAN_AUTH_OPEN:
801 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED;
802
f049052b 803 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth");
cb1583f6
SO		 804 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
805 wpa_s->current_ssid);
806 return;
807
808 case WLAN_AUTH_SHARED_KEY:
809 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP;
810
f049052b 811 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth");
cb1583f6
SO		 812 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
813 wpa_s->current_ssid);
814 return;
815
816 default:
817 return;
818 }
c2a04078
JM		 819 }
820
821#ifdef CONFIG_IEEE80211R
822 if (data->auth.auth_type == WLAN_AUTH_FT) {
823 union wpa_event_data edata;
824 os_memset(&edata, 0, sizeof(edata));
825 edata.ft_ies.ies = data->auth.ies;
826 edata.ft_ies.ies_len = data->auth.ies_len;
827 os_memcpy(edata.ft_ies.target_ap, data->auth.peer, ETH_ALEN);
828 wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &edata);
829 }
830#endif /* CONFIG_IEEE80211R */
831
71024cb2
JM		 832 sme_associate(wpa_s, ssid->mode, data->auth.peer,
833 data->auth.auth_type);
834}
835
836
837void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
838 const u8 *bssid, u16 auth_type)
839{
840 struct wpa_driver_associate_params params;
d9a27b04 841 struct ieee802_11_elems elems;
80e8a5ee
BG		 842#ifdef CONFIG_HT_OVERRIDES
843 struct ieee80211_ht_capabilities htcaps;
844 struct ieee80211_ht_capabilities htcaps_mask;
845#endif /* CONFIG_HT_OVERRIDES */
e9ee8dc3
JB		 846#ifdef CONFIG_VHT_OVERRIDES
847 struct ieee80211_vht_capabilities vhtcaps;
848 struct ieee80211_vht_capabilities vhtcaps_mask;
849#endif /* CONFIG_VHT_OVERRIDES */
71024cb2 850
c2a04078 851 os_memset(&params, 0, sizeof(params));
71024cb2 852 params.bssid = bssid;
c2a04078
JM		 853 params.ssid = wpa_s->sme.ssid;
854 params.ssid_len = wpa_s->sme.ssid_len;
4ec68377 855 params.freq.freq = wpa_s->sme.freq;
1f6c0ab8
BS		 856 params.bg_scan_period = wpa_s->current_ssid ?
857 wpa_s->current_ssid->bg_scan_period : -1;
c2a04078
JM		 858 params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
859 wpa_s->sme.assoc_req_ie : NULL;
860 params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
4848a38d
JM		 861 params.pairwise_suite = wpa_s->pairwise_cipher;
862 params.group_suite = wpa_s->group_cipher;
163f801e
JM		 863 params.key_mgmt_suite = wpa_s->key_mgmt;
864 params.wpa_proto = wpa_s->wpa_proto;
80e8a5ee
BG		 865#ifdef CONFIG_HT_OVERRIDES
866 os_memset(&htcaps, 0, sizeof(htcaps));
867 os_memset(&htcaps_mask, 0, sizeof(htcaps_mask));
868 params.htcaps = (u8 *) &htcaps;
869 params.htcaps_mask = (u8 *) &htcaps_mask;
870 wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, &params);
871#endif /* CONFIG_HT_OVERRIDES */
e9ee8dc3
JB		 872#ifdef CONFIG_VHT_OVERRIDES
873 os_memset(&vhtcaps, 0, sizeof(vhtcaps));
874 os_memset(&vhtcaps_mask, 0, sizeof(vhtcaps_mask));
875 params.vhtcaps = &vhtcaps;
876 params.vhtcaps_mask = &vhtcaps_mask;
877 wpa_supplicant_apply_vht_overrides(wpa_s, wpa_s->current_ssid, &params);
878#endif /* CONFIG_VHT_OVERRIDES */
c2a04078 879#ifdef CONFIG_IEEE80211R
71024cb2 880 if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
c2a04078
JM		 881 params.wpa_ie = wpa_s->sme.ft_ies;
882 params.wpa_ie_len = wpa_s->sme.ft_ies_len;
883 }
884#endif /* CONFIG_IEEE80211R */
71024cb2 885 params.mode = mode;
c2a04078 886 params.mgmt_frame_protection = wpa_s->sme.mfp;
b361d580 887 params.rrm_used = wpa_s->rrm.rrm_used;
62fa124c
JM		 888 if (wpa_s->sme.prev_bssid_set)
889 params.prev_bssid = wpa_s->sme.prev_bssid;
c2a04078
JM		 890
891 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
892 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
893 params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "",
4ec68377 894 params.freq.freq);
c2a04078
JM		 895
896 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
897
9efc3f2a
JM		 898 if (params.wpa_ie == NULL ||
899 ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0)
d9a27b04 900 < 0) {
f049052b 901 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!");
d9a27b04
JM		 902 os_memset(&elems, 0, sizeof(elems));
903 }
64fa840a
JM		 904 if (elems.rsn_ie) {
905 params.wpa_proto = WPA_PROTO_RSN;
d9a27b04
JM		 906 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2,
907 elems.rsn_ie_len + 2);
64fa840a
JM		 908 } else if (elems.wpa_ie) {
909 params.wpa_proto = WPA_PROTO_WPA;
d9a27b04
JM		 910 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
911 elems.wpa_ie_len + 2);
df0f01d9
JM		 912 } else if (elems.osen) {
913 params.wpa_proto = WPA_PROTO_OSEN;
914 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.osen - 2,
915 elems.osen_len + 2);
64fa840a 916 } else
d9a27b04 917 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
ffad8858 918 if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group)
6e3f4b89 919 params.p2p = 1;
d9a27b04 920
eea2fd9e
JM		 921 if (wpa_s->parent->set_sta_uapsd)
922 params.uapsd = wpa_s->parent->sta_uapsd;
923 else
924 params.uapsd = -1;
925
c2a04078 926 if (wpa_drv_associate(wpa_s, &params) < 0) {
f049052b
BG		 927 wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the "
928 "driver failed");
e5ad96b7 929 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
c1c02342 930 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
e5ad96b7 931 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
c2a04078
JM		 932 return;
933 }
934
e29853bb
BG		 935 eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s,
936 NULL);
c2a04078
JM		 937}
938
939
940int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
941 const u8 *ies, size_t ies_len)
942{
943 if (md == NULL || ies == NULL) {
f049052b 944 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain");
c2a04078
JM		 945 os_free(wpa_s->sme.ft_ies);
946 wpa_s->sme.ft_ies = NULL;
947 wpa_s->sme.ft_ies_len = 0;
948 wpa_s->sme.ft_used = 0;
949 return 0;
950 }
951
952 os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN);
953 wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len);
954 os_free(wpa_s->sme.ft_ies);
955 wpa_s->sme.ft_ies = os_malloc(ies_len);
956 if (wpa_s->sme.ft_ies == NULL)
957 return -1;
958 os_memcpy(wpa_s->sme.ft_ies, ies, ies_len);
959 wpa_s->sme.ft_ies_len = ies_len;
960 return 0;
961}
efa46078
JM		 962
963
e29853bb 964static void sme_deauth(struct wpa_supplicant *wpa_s)
efa46078 965{
8bac466b
JM		 966 int bssid_changed;
967
8bac466b 968 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
76d11d3f 969
76d11d3f
JM		 970 if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
971 WLAN_REASON_DEAUTH_LEAVING) < 0) {
f049052b
BG		 972 wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver "
973 "failed");
76d11d3f 974 }
62fa124c 975 wpa_s->sme.prev_bssid_set = 0;
76d11d3f 976
0fb337c1 977 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
76d11d3f 978 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
efa46078
JM		 979 os_memset(wpa_s->bssid, 0, ETH_ALEN);
980 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
8bac466b
JM		 981 if (bssid_changed)
982 wpas_notify_bssid_changed(wpa_s);
efa46078 983}
da1fb17c
JM		 984
985
e29853bb
BG		 986void sme_event_assoc_reject(struct wpa_supplicant *wpa_s,
987 union wpa_event_data *data)
988{
989 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: "
990 "status code %d", MAC2STR(wpa_s->pending_bssid),
991 data->assoc_reject.status_code);
992
993 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
994
bc26ac50
JM		 995#ifdef CONFIG_SAE
996 if (wpa_s->sme.sae_pmksa_caching && wpa_s->current_ssid &&
997 wpa_key_mgmt_sae(wpa_s->current_ssid->key_mgmt)) {
998 wpa_dbg(wpa_s, MSG_DEBUG,
999 "PMKSA caching attempt rejected - drop PMKSA cache entry and fall back to SAE authentication");
1000 wpa_sm_aborted_cached(wpa_s->wpa);
1001 wpa_sm_pmksa_cache_flush(wpa_s->wpa, wpa_s->current_ssid);
1002 if (wpa_s->current_bss) {
1003 struct wpa_bss *bss = wpa_s->current_bss;
1004 struct wpa_ssid *ssid = wpa_s->current_ssid;
1005
1006 wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
1007 WLAN_REASON_DEAUTH_LEAVING);
1008 wpas_connect_work_done(wpa_s);
1009 wpa_supplicant_mark_disassoc(wpa_s);
1010 wpa_supplicant_connect(wpa_s, bss, ssid);
1011 return;
1012 }
1013 }
1014#endif /* CONFIG_SAE */
1015
e29853bb
BG		 1016 /*
1017 * For now, unconditionally terminate the previous authentication. In
1018 * theory, this should not be needed, but mac80211 gets quite confused
1019 * if the authentication is left pending.. Some roaming cases might
1020 * benefit from using the previous authentication, so this could be
1021 * optimized in the future.
1022 */
1023 sme_deauth(wpa_s);
1024}
1025
1026
da1fb17c
JM		 1027void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s,
1028 union wpa_event_data *data)
1029{
f049052b 1030 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out");
0fb337c1 1031 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1193dc8f 1032 wpa_supplicant_mark_disassoc(wpa_s);
da1fb17c
JM		 1033}
1034
1035
1036void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s,
1037 union wpa_event_data *data)
1038{
f049052b 1039 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out");
0fb337c1 1040 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
da1fb17c 1041 wpa_supplicant_mark_disassoc(wpa_s);
da1fb17c 1042}
a84ed99e
JM		 1043
1044
1045void sme_event_disassoc(struct wpa_supplicant *wpa_s,
d7df0fa7 1046 struct disassoc_info *info)
a84ed99e 1047{
f049052b 1048 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received");
17fbb751 1049 if (wpa_s->sme.prev_bssid_set) {
a84ed99e
JM		 1050 /*
1051 * cfg80211/mac80211 can get into somewhat confused state if
1052 * the AP only disassociates us and leaves us in authenticated
1053 * state. For now, force the state to be cleared to avoid
1054 * confusing errors if we try to associate with the AP again.
1055 */
f049052b
BG		 1056 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear "
1057 "driver state");
7e26053a 1058 wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid,
a84ed99e
JM		 1059 WLAN_REASON_DEAUTH_LEAVING);
1060 }
1061}
7d878ca7
JM		 1062
1063
e29853bb
BG		 1064static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx)
1065{
1066 struct wpa_supplicant *wpa_s = eloop_ctx;
1067 if (wpa_s->wpa_state == WPA_AUTHENTICATING) {
1068 wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout");
1069 sme_deauth(wpa_s);
1070 }
1071}
1072
1073
1074static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx)
1075{
1076 struct wpa_supplicant *wpa_s = eloop_ctx;
1077 if (wpa_s->wpa_state == WPA_ASSOCIATING) {
1078 wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout");
1079 sme_deauth(wpa_s);
1080 }
1081}
1082
1083
1084void sme_state_changed(struct wpa_supplicant *wpa_s)
1085{
1086 /* Make sure timers are cleaned up appropriately. */
1087 if (wpa_s->wpa_state != WPA_ASSOCIATING)
1088 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1089 if (wpa_s->wpa_state != WPA_AUTHENTICATING)
1090 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1091}
1092
1093
1094void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s,
1095 const u8 *prev_pending_bssid)
1096{
1097 /*
1098 * mac80211-workaround to force deauth on failed auth cmd,
1099 * requires us to remain in authenticating state to allow the
1100 * second authentication attempt to be continued properly.
1101 */
1102 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication "
1103 "to proceed after disconnection event");
1104 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
1105 os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
1106
1107 /*
1108 * Re-arm authentication timer in case auth fails for whatever reason.
1109 */
1110 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1111 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
1112 NULL);
1113}
1114
1115
4e70bbf1
JM		 1116void sme_clear_on_disassoc(struct wpa_supplicant *wpa_s)
1117{
1118 wpa_s->sme.prev_bssid_set = 0;
1119#ifdef CONFIG_SAE
1120 wpabuf_free(wpa_s->sme.sae_token);
1121 wpa_s->sme.sae_token = NULL;
1122 sae_clear_data(&wpa_s->sme.sae);
1123#endif /* CONFIG_SAE */
1124#ifdef CONFIG_IEEE80211R
1125 if (wpa_s->sme.ft_ies)
1126 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
1127#endif /* CONFIG_IEEE80211R */
1128}
1129
1130
e29853bb
BG		 1131void sme_deinit(struct wpa_supplicant *wpa_s)
1132{
1133 os_free(wpa_s->sme.ft_ies);
1134 wpa_s->sme.ft_ies = NULL;
1135 wpa_s->sme.ft_ies_len = 0;
1136#ifdef CONFIG_IEEE80211W
1137 sme_stop_sa_query(wpa_s);
1138#endif /* CONFIG_IEEE80211W */
4e70bbf1 1139 sme_clear_on_disassoc(wpa_s);
e29853bb
BG		 1140
1141 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1142 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
c3701c66
RM		 1143 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
1144}
1145
1146
1147static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s,
1148 const u8 *chan_list, u8 num_channels,
1149 u8 num_intol)
1150{
1151 struct ieee80211_2040_bss_coex_ie *bc_ie;
1152 struct ieee80211_2040_intol_chan_report *ic_report;
1153 struct wpabuf *buf;
1154
31ded52e
JM		 1155 wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR
1156 " (num_channels=%u num_intol=%u)",
1157 MAC2STR(wpa_s->bssid), num_channels, num_intol);
1158 wpa_hexdump(MSG_DEBUG, "SME: 20/40 BSS Intolerant Channels",
1159 chan_list, num_channels);
c3701c66
RM		 1160
1161 buf = wpabuf_alloc(2 + /* action.category + action_code */
1162 sizeof(struct ieee80211_2040_bss_coex_ie) +
1163 sizeof(struct ieee80211_2040_intol_chan_report) +
1164 num_channels);
1165 if (buf == NULL)
1166 return;
1167
1168 wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC);
1169 wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX);
1170
1171 bc_ie = wpabuf_put(buf, sizeof(*bc_ie));
1172 bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE;
1173 bc_ie->length = 1;
1174 if (num_intol)
1175 bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ;
1176
1177 if (num_channels > 0) {
1178 ic_report = wpabuf_put(buf, sizeof(*ic_report));
1179 ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT;
1180 ic_report->length = num_channels + 1;
1181 ic_report->op_class = 0;
1182 os_memcpy(wpabuf_put(buf, num_channels), chan_list,
1183 num_channels);
1184 }
1185
1186 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
1187 wpa_s->own_addr, wpa_s->bssid,
1188 wpabuf_head(buf), wpabuf_len(buf), 0) < 0) {
1189 wpa_msg(wpa_s, MSG_INFO,
1190 "SME: Failed to send 20/40 BSS Coexistence frame");
1191 }
1192
1193 wpabuf_free(buf);
1194}
1195
1196
c3701c66
RM		 1197int sme_proc_obss_scan(struct wpa_supplicant *wpa_s)
1198{
1199 struct wpa_bss *bss;
1200 const u8 *ie;
1201 u16 ht_cap;
1202 u8 chan_list[P2P_MAX_CHANNELS], channel;
1203 u8 num_channels = 0, num_intol = 0, i;
1204
1205 if (!wpa_s->sme.sched_obss_scan)
1206 return 0;
1207
1208 wpa_s->sme.sched_obss_scan = 0;
1209 if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED)
1210 return 1;
1211
1212 /*
1213 * Check whether AP uses regulatory triplet or channel triplet in
1214 * country info. Right now the operating class of the BSS channel
1215 * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12),
1216 * based on the assumption that operating class triplet is not used in
1217 * beacon frame. If the First Channel Number/Operating Extension
1218 * Identifier octet has a positive integer value of 201 or greater,
1219 * then its operating class triplet.
1220 *
1221 * TODO: If Supported Operating Classes element is present in beacon
1222 * frame, have to lookup operating class in Annex E and fill them in
1223 * 2040 coex frame.
1224 */
1225 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY);
1226 if (ie && (ie[1] >= 6) && (ie[5] >= 201))
1227 return 1;
1228
1229 os_memset(chan_list, 0, sizeof(chan_list));
1230
1231 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1232 /* Skip other band bss */
e864c0ae
JM		 1233 enum hostapd_hw_mode mode;
1234 mode = ieee80211_freq_to_chan(bss->freq, &channel);
1235 if (mode != HOSTAPD_MODE_IEEE80211G &&
1236 mode != HOSTAPD_MODE_IEEE80211B)
c3701c66
RM		 1237 continue;
1238
1239 ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP);
1240 ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0;
31ded52e
JM		 1241 wpa_printf(MSG_DEBUG, "SME OBSS scan BSS " MACSTR
1242 " freq=%u chan=%u ht_cap=0x%x",
1243 MAC2STR(bss->bssid), bss->freq, channel, ht_cap);
c3701c66
RM		 1244
1245 if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) {
7f8eb34d
JM		 1246 if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)
1247 num_intol++;
1248
c3701c66
RM		 1249 /* Check whether the channel is already considered */
1250 for (i = 0; i < num_channels; i++) {
1251 if (channel == chan_list[i])
1252 break;
1253 }
1254 if (i != num_channels)
1255 continue;
1256
c3701c66
RM		 1257 chan_list[num_channels++] = channel;
1258 }
1259 }
1260
1261 sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol);
1262 return 1;
1263}
1264
1265
6434ad09
JM		 1266static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
1267 u16 num_modes,
1268 enum hostapd_hw_mode mode)
1269{
1270 u16 i;
1271
1272 for (i = 0; i < num_modes; i++) {
1273 if (modes[i].mode == mode)
1274 return &modes[i];
1275 }
1276
1277 return NULL;
1278}
1279
1280
d97a3c48
JM		 1281static void wpa_obss_scan_freqs_list(struct wpa_supplicant *wpa_s,
1282 struct wpa_driver_scan_params *params)
6434ad09 1283{
d97a3c48 1284 /* Include only affected channels */
6434ad09
JM		 1285 struct hostapd_hw_modes *mode;
1286 int count, i;
d97a3c48 1287 int start, end;
6434ad09 1288
d97a3c48
JM		 1289 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes,
1290 HOSTAPD_MODE_IEEE80211G);
6434ad09
JM		 1291 if (mode == NULL) {
1292 /* No channels supported in this band - use empty list */
1293 params->freqs = os_zalloc(sizeof(int));
1294 return;
1295 }
1296
d97a3c48
JM		 1297 if (wpa_s->sme.ht_sec_chan == HT_SEC_CHAN_UNKNOWN &&
1298 wpa_s->current_bss) {
1299 const u8 *ie;
1300
1301 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_OPERATION);
1302 if (ie && ie[1] >= 2) {
1303 u8 o;
1304
1305 o = ie[3] & HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK;
1306 if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE)
1307 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_ABOVE;
1308 else if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW)
1309 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_BELOW;
1310 }
1311 }
1312
1313 start = wpa_s->assoc_freq - 10;
1314 end = wpa_s->assoc_freq + 10;
1315 switch (wpa_s->sme.ht_sec_chan) {
1316 case HT_SEC_CHAN_UNKNOWN:
1317 /* HT40+ possible on channels 1..9 */
1318 if (wpa_s->assoc_freq <= 2452)
1319 start -= 20;
1320 /* HT40- possible on channels 5-13 */
1321 if (wpa_s->assoc_freq >= 2432)
1322 end += 20;
1323 break;
1324 case HT_SEC_CHAN_ABOVE:
1325 end += 20;
1326 break;
1327 case HT_SEC_CHAN_BELOW:
1328 start -= 20;
1329 break;
1330 }
1331 wpa_printf(MSG_DEBUG,
1332 "OBSS: assoc_freq %d possible affected range %d-%d",
1333 wpa_s->assoc_freq, start, end);
1334
f9884c09 1335 params->freqs = os_calloc(mode->num_channels + 1, sizeof(int));
6434ad09
JM		 1336 if (params->freqs == NULL)
1337 return;
1338 for (count = 0, i = 0; i < mode->num_channels; i++) {
d97a3c48
JM		 1339 int freq;
1340
6434ad09
JM		 1341 if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED)
1342 continue;
d97a3c48
JM		 1343 freq = mode->channels[i].freq;
1344 if (freq - 10 >= end || freq + 10 <= start)
1345 continue; /* not affected */
1346 params->freqs[count++] = freq;
6434ad09
JM		 1347 }
1348}
1349
1350
c3701c66
RM		 1351static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1352{
1353 struct wpa_supplicant *wpa_s = eloop_ctx;
1354 struct wpa_driver_scan_params params;
1355
1356 if (!wpa_s->current_bss) {
1357 wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request");
1358 return;
1359 }
1360
1361 os_memset(&params, 0, sizeof(params));
d97a3c48 1362 wpa_obss_scan_freqs_list(wpa_s, &params);
57a8f8af 1363 params.low_priority = 1;
c3701c66
RM		 1364 wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan");
1365
1366 if (wpa_supplicant_trigger_scan(wpa_s, &params))
1367 wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan");
1368 else
1369 wpa_s->sme.sched_obss_scan = 1;
6434ad09 1370 os_free(params.freqs);
c3701c66
RM		 1371
1372 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
1373 sme_obss_scan_timeout, wpa_s, NULL);
1374}
1375
1376
1377void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable)
1378{
1379 const u8 *ie;
1380 struct wpa_bss *bss = wpa_s->current_bss;
1381 struct wpa_ssid *ssid = wpa_s->current_ssid;
b6871ebb
AN		 1382 struct hostapd_hw_modes *hw_mode = NULL;
1383 int i;
c3701c66
RM		 1384
1385 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
1386 wpa_s->sme.sched_obss_scan = 0;
d97a3c48 1387 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_UNKNOWN;
c3701c66
RM		 1388 if (!enable)
1389 return;
1390
368b1957
AK		 1391 /*
1392 * Schedule OBSS scan if driver is using station SME in wpa_supplicant
1393 * or it expects OBSS scan to be performed by wpa_supplicant.
1394 */
1395 if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) ||
1396 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) ||
1397 ssid == NULL || ssid->mode != IEEE80211_MODE_INFRA)
1398 return;
c3701c66 1399
b6871ebb
AN		 1400 if (!wpa_s->hw.modes)
1401 return;
1402
1403 /* only HT caps in 11g mode are relevant */
1404 for (i = 0; i < wpa_s->hw.num_modes; i++) {
1405 hw_mode = &wpa_s->hw.modes[i];
1406 if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G)
1407 break;
1408 }
1409
1410 /* Driver does not support HT40 for 11g or doesn't have 11g. */
1411 if (i == wpa_s->hw.num_modes || !hw_mode ||
1412 !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1413 return;
c3701c66
RM		 1414
1415 if (bss == NULL || bss->freq < 2400 || bss->freq > 2500)
1416 return; /* Not associated on 2.4 GHz band */
1417
1418 /* Check whether AP supports HT40 */
1419 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP);
1420 if (!ie || ie[1] < 2 ||
1421 !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1422 return; /* AP does not support HT40 */
1423
1424 ie = wpa_bss_get_ie(wpa_s->current_bss,
1425 WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS);
1426 if (!ie || ie[1] < 14)
1427 return; /* AP does not request OBSS scans */
1428
1429 wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6);
1430 if (wpa_s->sme.obss_scan_int < 10) {
1431 wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u "
1432 "replaced with the minimum 10 sec",
1433 wpa_s->sme.obss_scan_int);
1434 wpa_s->sme.obss_scan_int = 10;
1435 }
1436 wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec",
1437 wpa_s->sme.obss_scan_int);
1438 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
1439 sme_obss_scan_timeout, wpa_s, NULL);
e29853bb
BG		 1440}
1441
1442
7d878ca7
JM		 1443#ifdef CONFIG_IEEE80211W
1444
1445static const unsigned int sa_query_max_timeout = 1000;
1446static const unsigned int sa_query_retry_timeout = 201;
1447
1448static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s)
1449{
1450 u32 tu;
46b8d4c0
JB		 1451 struct os_reltime now, passed;
1452 os_get_reltime(&now);
1453 os_reltime_sub(&now, &wpa_s->sme.sa_query_start, &passed);
7d878ca7
JM		 1454 tu = (passed.sec * 1000000 + passed.usec) / 1024;
1455 if (sa_query_max_timeout < tu) {
f049052b 1456 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out");
7d878ca7
JM		 1457 sme_stop_sa_query(wpa_s);
1458 wpa_supplicant_deauthenticate(
1459 wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID);
1460 return 1;
1461 }
1462
1463 return 0;
1464}
1465
1466
1467static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s,
1468 const u8 *trans_id)
1469{
1470 u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN];
f049052b
BG		 1471 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to "
1472 MACSTR, MAC2STR(wpa_s->bssid));
7d878ca7
JM		 1473 wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID",
1474 trans_id, WLAN_SA_QUERY_TR_ID_LEN);
1475 req[0] = WLAN_ACTION_SA_QUERY;
1476 req[1] = WLAN_SA_QUERY_REQUEST;
1477 os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN);
190b9062 1478 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
7d878ca7 1479 wpa_s->own_addr, wpa_s->bssid,
b106173a 1480 req, sizeof(req), 0) < 0)
f049052b
BG		 1481 wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query "
1482 "Request");
7d878ca7
JM		 1483}
1484
1485
1486static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
1487{
1488 struct wpa_supplicant *wpa_s = eloop_ctx;
1489 unsigned int timeout, sec, usec;
1490 u8 *trans_id, *nbuf;
1491
1492 if (wpa_s->sme.sa_query_count > 0 &&
1493 sme_check_sa_query_timeout(wpa_s))
1494 return;
1495
067ffa26
JM		 1496 nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id,
1497 wpa_s->sme.sa_query_count + 1,
1498 WLAN_SA_QUERY_TR_ID_LEN);
7d878ca7
JM		 1499 if (nbuf == NULL)
1500 return;
1501 if (wpa_s->sme.sa_query_count == 0) {
1502 /* Starting a new SA Query procedure */
46b8d4c0 1503 os_get_reltime(&wpa_s->sme.sa_query_start);
7d878ca7
JM		 1504 }
1505 trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
1506 wpa_s->sme.sa_query_trans_id = nbuf;
1507 wpa_s->sme.sa_query_count++;
1508
cb5ef952
JM		 1509 if (os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN) < 0) {
1510 wpa_printf(MSG_DEBUG, "Could not generate SA Query ID");
1511 return;
1512 }
7d878ca7
JM		 1513
1514 timeout = sa_query_retry_timeout;
1515 sec = ((timeout / 1000) * 1024) / 1000;
1516 usec = (timeout % 1000) * 1024;
1517 eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL);
1518
f049052b
BG		 1519 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d",
1520 wpa_s->sme.sa_query_count);
7d878ca7
JM		 1521
1522 sme_send_sa_query_req(wpa_s, trans_id);
1523}
1524
1525
1526static void sme_start_sa_query(struct wpa_supplicant *wpa_s)
1527{
1528 sme_sa_query_timer(wpa_s, NULL);
1529}
1530
1531
19df9b07 1532static void sme_stop_sa_query(struct wpa_supplicant *wpa_s)
7d878ca7
JM		 1533{
1534 eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL);
1535 os_free(wpa_s->sme.sa_query_trans_id);
1536 wpa_s->sme.sa_query_trans_id = NULL;
1537 wpa_s->sme.sa_query_count = 0;
1538}
1539
1540
1541void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa,
1542 const u8 *da, u16 reason_code)
1543{
1544 struct wpa_ssid *ssid;
3302b7c2 1545 struct os_reltime now;
7d878ca7 1546
7d878ca7
JM		 1547 if (wpa_s->wpa_state != WPA_COMPLETED)
1548 return;
1549 ssid = wpa_s->current_ssid;
62d49803
JM		 1550 if (ssid == NULL ||
1551 (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
1552 wpa_s->conf->pmf : ssid->ieee80211w) == NO_MGMT_FRAME_PROTECTION)
7d878ca7
JM		 1553 return;
1554 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
1555 return;
1556 if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA &&
1557 reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA)
1558 return;
1559 if (wpa_s->sme.sa_query_count > 0)
1560 return;
1561
3302b7c2
JM		 1562 os_get_reltime(&now);
1563 if (wpa_s->sme.last_unprot_disconnect.sec &&
1564 !os_reltime_expired(&now, &wpa_s->sme.last_unprot_disconnect, 10))
1565 return; /* limit SA Query procedure frequency */
1566 wpa_s->sme.last_unprot_disconnect = now;
1567
f049052b
BG		 1568 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - "
1569 "possible AP/STA state mismatch - trigger SA Query");
7d878ca7
JM		 1570 sme_start_sa_query(wpa_s);
1571}
1572
1573
1574void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa,
1575 const u8 *data, size_t len)
1576{
1577 int i;
1578
1579 if (wpa_s->sme.sa_query_trans_id == NULL ||
1580 len < 1 + WLAN_SA_QUERY_TR_ID_LEN ||
1581 data[0] != WLAN_SA_QUERY_RESPONSE)
1582 return;
f049052b
BG		 1583 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from "
1584 MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
7d878ca7
JM		 1585
1586 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
1587 return;
1588
1589 for (i = 0; i < wpa_s->sme.sa_query_count; i++) {
1590 if (os_memcmp(wpa_s->sme.sa_query_trans_id +
1591 i * WLAN_SA_QUERY_TR_ID_LEN,
1592 data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0)
1593 break;
1594 }
1595
1596 if (i >= wpa_s->sme.sa_query_count) {
f049052b
BG		 1597 wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query "
1598 "transaction identifier found");
7d878ca7
JM		 1599 return;
1600 }
1601
f049052b
BG		 1602 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received "
1603 "from " MACSTR, MAC2STR(sa));
7d878ca7
JM		 1604 sme_stop_sa_query(wpa_s);
1605}
1606
1607#endif /* CONFIG_IEEE80211W */
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