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nl80211: Add support for aborting an ongoing scan
[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];
04e6c4cc 70 if (group <= 0)
625f202a
JM		 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;
59b416c7 210 int skip_auth;
c2a04078
JM		 211
212 if (bss == NULL) {
f049052b
BG		 213 wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for "
214 "the network");
6ac4b15e 215 wpas_connect_work_done(wpa_s);
c2a04078
JM		 216 return;
217 }
218
59b416c7
JM		 219 skip_auth = wpa_s->conf->reassoc_same_bss_optim &&
220 wpa_s->reassoc_same_bss;
8f770587
JM		 221 wpa_s->current_bss = bss;
222
c2a04078
JM		 223 os_memset(&params, 0, sizeof(params));
224 wpa_s->reassociate = 0;
225
226 params.freq = bss->freq;
227 params.bssid = bss->bssid;
6fa81a3b
JM		 228 params.ssid = bss->ssid;
229 params.ssid_len = bss->ssid_len;
2f4f73b1 230 params.p2p = ssid->p2p_group;
c2a04078 231
62fa124c
JM		 232 if (wpa_s->sme.ssid_len != params.ssid_len ||
233 os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0)
234 wpa_s->sme.prev_bssid_set = 0;
235
c2a04078
JM		 236 wpa_s->sme.freq = params.freq;
237 os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len);
238 wpa_s->sme.ssid_len = params.ssid_len;
239
abd9fafa 240 params.auth_alg = WPA_AUTH_ALG_OPEN;
c2a04078
JM		 241#ifdef IEEE8021X_EAPOL
242 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
243 if (ssid->leap) {
244 if (ssid->non_leap == 0)
abd9fafa 245 params.auth_alg = WPA_AUTH_ALG_LEAP;
c2a04078 246 else
abd9fafa 247 params.auth_alg |= WPA_AUTH_ALG_LEAP;
c2a04078
JM		 248 }
249 }
250#endif /* IEEE8021X_EAPOL */
f049052b
BG		 251 wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x",
252 params.auth_alg);
c2a04078 253 if (ssid->auth_alg) {
abd9fafa 254 params.auth_alg = ssid->auth_alg;
f049052b
BG		 255 wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: "
256 "0x%x", params.auth_alg);
c2a04078 257 }
c10347f2 258#ifdef CONFIG_SAE
bc26ac50 259 wpa_s->sme.sae_pmksa_caching = 0;
c10347f2
JM		 260 if (wpa_key_mgmt_sae(ssid->key_mgmt)) {
261 const u8 *rsn;
262 struct wpa_ie_data ied;
263
264 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
267ac3bc
JM		 265 if (!rsn) {
266 wpa_dbg(wpa_s, MSG_DEBUG,
267 "SAE enabled, but target BSS does not advertise RSN");
268 } else if (wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0 &&
269 wpa_key_mgmt_sae(ied.key_mgmt)) {
270 wpa_dbg(wpa_s, MSG_DEBUG, "Using SAE auth_alg");
271 params.auth_alg = WPA_AUTH_ALG_SAE;
272 } else {
273 wpa_dbg(wpa_s, MSG_DEBUG,
274 "SAE enabled, but target BSS does not advertise SAE AKM for RSN");
c10347f2
JM		 275 }
276 }
277#endif /* CONFIG_SAE */
c2a04078 278
a0b2f99b
JM		 279 for (i = 0; i < NUM_WEP_KEYS; i++) {
280 if (ssid->wep_key_len[i])
281 params.wep_key[i] = ssid->wep_key[i];
282 params.wep_key_len[i] = ssid->wep_key_len[i];
283 }
284 params.wep_tx_keyidx = ssid->wep_tx_keyidx;
285
8bac466b 286 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
c2a04078
JM		 287 os_memset(wpa_s->bssid, 0, ETH_ALEN);
288 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
8bac466b
JM		 289 if (bssid_changed)
290 wpas_notify_bssid_changed(wpa_s);
c2a04078 291
f337f0e9
JM		 292 if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
293 wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
0bf927a0 294 wpa_key_mgmt_wpa(ssid->key_mgmt)) {
c2a04078 295 int try_opportunistic;
6e202021
JM		 296 try_opportunistic = (ssid->proactive_key_caching < 0 ?
297 wpa_s->conf->okc :
298 ssid->proactive_key_caching) &&
c2a04078
JM		 299 (ssid->proto & WPA_PROTO_RSN);
300 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
301 wpa_s->current_ssid,
302 try_opportunistic) == 0)
ba422613 303 eapol_sm_notify_pmkid_attempt(wpa_s->eapol);
c2a04078
JM		 304 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
305 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
306 wpa_s->sme.assoc_req_ie,
307 &wpa_s->sme.assoc_req_ie_len)) {
f049052b
BG		 308 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
309 "key management and encryption suites");
6ac4b15e 310 wpas_connect_work_done(wpa_s);
c2a04078
JM		 311 return;
312 }
a3f7e518
JM		 313 } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
314 wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) {
315 /*
316 * Both WPA and non-WPA IEEE 802.1X enabled in configuration -
317 * use non-WPA since the scan results did not indicate that the
318 * AP is using WPA or WPA2.
319 */
320 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
321 wpa_s->sme.assoc_req_ie_len = 0;
0bf927a0 322 } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
c2a04078
JM		 323 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
324 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
325 wpa_s->sme.assoc_req_ie,
326 &wpa_s->sme.assoc_req_ie_len)) {
f049052b
BG		 327 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
328 "key management and encryption suites (no "
329 "scan results)");
6ac4b15e 330 wpas_connect_work_done(wpa_s);
c2a04078
JM		 331 return;
332 }
333#ifdef CONFIG_WPS
334 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
335 struct wpabuf *wps_ie;
336 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
337 if (wps_ie && wpabuf_len(wps_ie) <=
338 sizeof(wpa_s->sme.assoc_req_ie)) {
339 wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie);
340 os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie),
341 wpa_s->sme.assoc_req_ie_len);
342 } else
343 wpa_s->sme.assoc_req_ie_len = 0;
344 wpabuf_free(wps_ie);
345 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
346#endif /* CONFIG_WPS */
347 } else {
348 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
349 wpa_s->sme.assoc_req_ie_len = 0;
350 }
351
352#ifdef CONFIG_IEEE80211R
6fa81a3b 353 ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
c2a04078
JM		 354 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
355 md = ie + 2;
e7846b68 356 wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
c2a04078
JM		 357 if (md) {
358 /* Prepare for the next transition */
76b7981d 359 wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
c2a04078
JM		 360 }
361
0bf927a0 362 if (md && wpa_key_mgmt_ft(ssid->key_mgmt)) {
c2a04078
JM		 363 if (wpa_s->sme.assoc_req_ie_len + 5 <
364 sizeof(wpa_s->sme.assoc_req_ie)) {
365 struct rsn_mdie *mdie;
366 u8 *pos = wpa_s->sme.assoc_req_ie +
367 wpa_s->sme.assoc_req_ie_len;
368 *pos++ = WLAN_EID_MOBILITY_DOMAIN;
369 *pos++ = sizeof(*mdie);
370 mdie = (struct rsn_mdie *) pos;
371 os_memcpy(mdie->mobility_domain, md,
372 MOBILITY_DOMAIN_ID_LEN);
f4ec630d 373 mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN];
c2a04078
JM		 374 wpa_s->sme.assoc_req_ie_len += 5;
375 }
376
377 if (wpa_s->sme.ft_used &&
0d7b4409
JM		 378 os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 &&
379 wpa_sm_has_ptk(wpa_s->wpa)) {
f049052b
BG		 380 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT "
381 "over-the-air");
abd9fafa 382 params.auth_alg = WPA_AUTH_ALG_FT;
c2a04078
JM		 383 params.ie = wpa_s->sme.ft_ies;
384 params.ie_len = wpa_s->sme.ft_ies_len;
385 }
386 }
387#endif /* CONFIG_IEEE80211R */
388
389#ifdef CONFIG_IEEE80211W
3f56a2b7 390 wpa_s->sme.mfp = wpas_get_ssid_pmf(wpa_s, ssid);
62d49803 391 if (wpa_s->sme.mfp != NO_MGMT_FRAME_PROTECTION) {
6fa81a3b 392 const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
c2a04078
JM		 393 struct wpa_ie_data _ie;
394 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 &&
395 _ie.capabilities &
396 (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
f049052b
BG		 397 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports "
398 "MFP: require MFP");
c2a04078
JM		 399 wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED;
400 }
401 }
402#endif /* CONFIG_IEEE80211W */
403
5f3a6aa0
JM		 404#ifdef CONFIG_P2P
405 if (wpa_s->global->p2p) {
406 u8 *pos;
407 size_t len;
408 int res;
5f3a6aa0
JM		 409 pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
410 len = sizeof(wpa_s->sme.assoc_req_ie) -
411 wpa_s->sme.assoc_req_ie_len;
ffad8858
JM		 412 res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len,
413 ssid->p2p_group);
5f3a6aa0
JM		 414 if (res >= 0)
415 wpa_s->sme.assoc_req_ie_len += res;
416 }
417#endif /* CONFIG_P2P */
418
cb418324 419#ifdef CONFIG_HS20
55a2df43 420 if (is_hs20_network(wpa_s, ssid, bss)) {
cb418324
JM		 421 struct wpabuf *hs20;
422 hs20 = wpabuf_alloc(20);
423 if (hs20) {
f9cd147d 424 int pps_mo_id = hs20_get_pps_mo_id(wpa_s, ssid);
745ef184
JM		 425 size_t len;
426
f9cd147d 427 wpas_hs20_add_indication(hs20, pps_mo_id);
745ef184
JM		 428 len = sizeof(wpa_s->sme.assoc_req_ie) -
429 wpa_s->sme.assoc_req_ie_len;
430 if (wpabuf_len(hs20) <= len) {
431 os_memcpy(wpa_s->sme.assoc_req_ie +
432 wpa_s->sme.assoc_req_ie_len,
433 wpabuf_head(hs20), wpabuf_len(hs20));
434 wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20);
435 }
cb418324
JM		 436 wpabuf_free(hs20);
437 }
438 }
439#endif /* CONFIG_HS20 */
440
b36a3a65
AN		 441#ifdef CONFIG_FST
442 if (wpa_s->fst_ies) {
443 int fst_ies_len = wpabuf_len(wpa_s->fst_ies);
444
445 if (wpa_s->sme.assoc_req_ie_len + fst_ies_len <=
446 sizeof(wpa_s->sme.assoc_req_ie)) {
447 os_memcpy(wpa_s->sme.assoc_req_ie +
448 wpa_s->sme.assoc_req_ie_len,
449 wpabuf_head(wpa_s->fst_ies),
450 fst_ies_len);
451 wpa_s->sme.assoc_req_ie_len += fst_ies_len;
452 }
453 }
454#endif /* CONFIG_FST */
455
0bbaa9b9
JM		 456 ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab,
457 sizeof(ext_capab));
03e47c9c 458 if (ext_capab_len > 0) {
92cbcf91
JM		 459 u8 *pos = wpa_s->sme.assoc_req_ie;
460 if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN)
461 pos += 2 + pos[1];
03e47c9c 462 os_memmove(pos + ext_capab_len, pos,
92cbcf91
JM		 463 wpa_s->sme.assoc_req_ie_len -
464 (pos - wpa_s->sme.assoc_req_ie));
03e47c9c
JM		 465 wpa_s->sme.assoc_req_ie_len += ext_capab_len;
466 os_memcpy(pos, ext_capab, ext_capab_len);
92cbcf91 467 }
92cbcf91 468
d29fa3a7
JM		 469 if (wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ]) {
470 struct wpabuf *buf = wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ];
471 size_t len;
472
473 len = sizeof(wpa_s->sme.assoc_req_ie) -
474 wpa_s->sme.assoc_req_ie_len;
475 if (wpabuf_len(buf) <= len) {
476 os_memcpy(wpa_s->sme.assoc_req_ie +
477 wpa_s->sme.assoc_req_ie_len,
478 wpabuf_head(buf), wpabuf_len(buf));
479 wpa_s->sme.assoc_req_ie_len += wpabuf_len(buf);
480 }
481 }
482
b361d580
AK		 483 sme_auth_handle_rrm(wpa_s, bss);
484
c10347f2 485#ifdef CONFIG_SAE
59b416c7 486 if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE &&
bc26ac50
JM		 487 pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, ssid, 0) == 0)
488 {
489 wpa_dbg(wpa_s, MSG_DEBUG,
490 "PMKSA cache entry found - try to use PMKSA caching instead of new SAE authentication");
491 params.auth_alg = WPA_AUTH_ALG_OPEN;
492 wpa_s->sme.sae_pmksa_caching = 1;
493 }
494
59b416c7 495 if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE) {
c10347f2 496 if (start)
8e31e955
JM		 497 resp = sme_auth_build_sae_commit(wpa_s, ssid,
498 bss->bssid);
c10347f2
JM		 499 else
500 resp = sme_auth_build_sae_confirm(wpa_s);
6ac4b15e 501 if (resp == NULL) {
81648d00 502 wpas_connection_failed(wpa_s, bss->bssid);
c10347f2 503 return;
6ac4b15e 504 }
c10347f2
JM		 505 params.sae_data = wpabuf_head(resp);
506 params.sae_data_len = wpabuf_len(resp);
dd43026a 507 wpa_s->sme.sae.state = start ? SAE_COMMITTED : SAE_CONFIRMED;
c10347f2
JM		 508 }
509#endif /* CONFIG_SAE */
510
a4cba8f1 511 wpa_supplicant_cancel_sched_scan(wpa_s);
c2a04078
JM		 512 wpa_supplicant_cancel_scan(wpa_s);
513
f049052b 514 wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR
c2a04078
JM		 515 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
516 wpa_ssid_txt(params.ssid, params.ssid_len), params.freq);
517
518 wpa_clear_keys(wpa_s, bss->bssid);
519 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
8bac466b 520 old_ssid = wpa_s->current_ssid;
c2a04078
JM		 521 wpa_s->current_ssid = ssid;
522 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
523 wpa_supplicant_initiate_eapol(wpa_s);
8bac466b
JM		 524 if (old_ssid != wpa_s->current_ssid)
525 wpas_notify_network_changed(wpa_s);
c2a04078 526
d0df6437
IP		 527#ifdef CONFIG_P2P
528 /*
529 * If multi-channel concurrency is not supported, check for any
530 * frequency conflict. In case of any frequency conflict, remove the
531 * least prioritized connection.
532 */
533 if (wpa_s->num_multichan_concurrent < 2) {
534 int freq, num;
535 num = get_shared_radio_freqs(wpa_s, &freq, 1);
536 if (num > 0 && freq > 0 && freq != params.freq) {
537 wpa_printf(MSG_DEBUG,
538 "Conflicting frequency found (%d != %d)",
539 freq, params.freq);
540 if (wpas_p2p_handle_frequency_conflicts(wpa_s,
541 params.freq,
542 ssid) < 0) {
543 wpas_connection_failed(wpa_s, bss->bssid);
544 wpa_supplicant_mark_disassoc(wpa_s);
545 wpabuf_free(resp);
546 wpas_connect_work_done(wpa_s);
547 return;
548 }
549 }
550 }
551#endif /* CONFIG_P2P */
552
59b416c7
JM		 553 if (skip_auth) {
554 wpa_msg(wpa_s, MSG_DEBUG,
555 "SME: Skip authentication step on reassoc-to-same-BSS");
556 wpabuf_free(resp);
557 sme_associate(wpa_s, ssid->mode, bss->bssid, WLAN_AUTH_OPEN);
558 return;
559 }
560
561
62c72d72 562 wpa_s->sme.auth_alg = params.auth_alg;
c2a04078 563 if (wpa_drv_authenticate(wpa_s, &params) < 0) {
f049052b 564 wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the "
c2a04078 565 "driver failed");
ed57c590 566 wpas_connection_failed(wpa_s, bss->bssid);
1193dc8f 567 wpa_supplicant_mark_disassoc(wpa_s);
c10347f2 568 wpabuf_free(resp);
6ac4b15e 569 wpas_connect_work_done(wpa_s);
c2a04078
JM		 570 return;
571 }
572
e29853bb
BG		 573 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
574 NULL);
c2a04078
JM		 575
576 /*
577 * Association will be started based on the authentication event from
578 * the driver.
579 */
c10347f2
JM		 580
581 wpabuf_free(resp);
582}
583
584
6ac4b15e
JM		 585static void sme_auth_start_cb(struct wpa_radio_work *work, int deinit)
586{
587 struct wpa_connect_work *cwork = work->ctx;
588 struct wpa_supplicant *wpa_s = work->wpa_s;
589
590 if (deinit) {
b3253ebb
AO		 591 if (work->started)
592 wpa_s->connect_work = NULL;
593
6ac4b15e
JM		 594 wpas_connect_work_free(cwork);
595 return;
596 }
597
598 wpa_s->connect_work = work;
599
a7f5271d 600 if (cwork->bss_removed ||
6108536d
HW		 601 !wpas_valid_bss_ssid(wpa_s, cwork->bss, cwork->ssid) ||
602 wpas_network_disabled(wpa_s, cwork->ssid)) {
6ac4b15e
JM		 603 wpa_dbg(wpa_s, MSG_DEBUG, "SME: BSS/SSID entry for authentication not valid anymore - drop connection attempt");
604 wpas_connect_work_done(wpa_s);
605 return;
606 }
607
608 sme_send_authentication(wpa_s, cwork->bss, cwork->ssid, 1);
609}
610
611
c10347f2
JM		 612void sme_authenticate(struct wpa_supplicant *wpa_s,
613 struct wpa_bss *bss, struct wpa_ssid *ssid)
614{
6ac4b15e
JM		 615 struct wpa_connect_work *cwork;
616
617 if (bss == NULL || ssid == NULL)
618 return;
619 if (wpa_s->connect_work) {
620 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reject sme_authenticate() call since connect_work exist");
621 return;
622 }
623
f0e30c84 624 if (radio_work_pending(wpa_s, "sme-connect")) {
f1c4dbf5
IP		 625 /*
626 * The previous sme-connect work might no longer be valid due to
627 * the fact that the BSS list was updated. In addition, it makes
628 * sense to adhere to the 'newer' decision.
629 */
630 wpa_dbg(wpa_s, MSG_DEBUG,
631 "SME: Remove previous pending sme-connect");
632 radio_remove_works(wpa_s, "sme-connect", 0);
f0e30c84
JM		 633 }
634
6ac4b15e
JM		 635 cwork = os_zalloc(sizeof(*cwork));
636 if (cwork == NULL)
637 return;
638 cwork->bss = bss;
639 cwork->ssid = ssid;
640 cwork->sme = 1;
641
98efcc41 642#ifdef CONFIG_SAE
dd43026a 643 wpa_s->sme.sae.state = SAE_NOTHING;
98efcc41 644 wpa_s->sme.sae.send_confirm = 0;
18ca7332 645 wpa_s->sme.sae_group_index = 0;
98efcc41 646#endif /* CONFIG_SAE */
6ac4b15e
JM		 647
648 if (radio_add_work(wpa_s, bss->freq, "sme-connect", 1,
649 sme_auth_start_cb, cwork) < 0)
650 wpas_connect_work_free(cwork);
c2a04078
JM		 651}
652
653
c10347f2 654#ifdef CONFIG_SAE
21af6d15 655
c10347f2
JM		 656static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction,
657 u16 status_code, const u8 *data, size_t len)
658{
a959a3b6
MH		 659 int *groups;
660
c10347f2
JM		 661 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u "
662 "status code %u", auth_transaction, status_code);
c10347f2 663
d136c376
JM		 664 if (auth_transaction == 1 &&
665 status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ &&
666 wpa_s->sme.sae.state == SAE_COMMITTED &&
667 wpa_s->current_bss && wpa_s->current_ssid) {
a959a3b6
MH		 668 int default_groups[] = { 19, 20, 21, 25, 26, 0 };
669 u16 group;
670
671 groups = wpa_s->conf->sae_groups;
672 if (!groups || groups[0] <= 0)
673 groups = default_groups;
674
675 if (len < sizeof(le16)) {
676 wpa_dbg(wpa_s, MSG_DEBUG,
677 "SME: Too short SAE anti-clogging token request");
678 return -1;
679 }
680 group = WPA_GET_LE16(data);
681 wpa_dbg(wpa_s, MSG_DEBUG,
682 "SME: SAE anti-clogging token requested (group %u)",
683 group);
684 if (sae_group_allowed(&wpa_s->sme.sae, groups, group) !=
685 WLAN_STATUS_SUCCESS) {
686 wpa_dbg(wpa_s, MSG_ERROR,
687 "SME: SAE group %u of anti-clogging request is invalid",
688 group);
689 return -1;
690 }
d136c376 691 wpabuf_free(wpa_s->sme.sae_token);
a959a3b6
MH		 692 wpa_s->sme.sae_token = wpabuf_alloc_copy(data + sizeof(le16),
693 len - sizeof(le16));
d136c376
JM		 694 sme_send_authentication(wpa_s, wpa_s->current_bss,
695 wpa_s->current_ssid, 1);
696 return 0;
697 }
698
625f202a
JM		 699 if (auth_transaction == 1 &&
700 status_code == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED &&
701 wpa_s->sme.sae.state == SAE_COMMITTED &&
702 wpa_s->current_bss && wpa_s->current_ssid) {
703 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE group not supported");
704 wpa_s->sme.sae_group_index++;
705 if (sme_set_sae_group(wpa_s) < 0)
706 return -1; /* no other groups enabled */
707 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Try next enabled SAE group");
708 sme_send_authentication(wpa_s, wpa_s->current_bss,
709 wpa_s->current_ssid, 1);
710 return 0;
711 }
712
c10347f2
JM		 713 if (status_code != WLAN_STATUS_SUCCESS)
714 return -1;
715
716 if (auth_transaction == 1) {
6a58444d
JM		 717 u16 res;
718
a959a3b6 719 groups = wpa_s->conf->sae_groups;
18ca7332 720
c10347f2
JM		 721 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit");
722 if (wpa_s->current_bss == NULL ||
723 wpa_s->current_ssid == NULL)
724 return -1;
dd43026a 725 if (wpa_s->sme.sae.state != SAE_COMMITTED)
21af6d15 726 return -1;
18ca7332
JM		 727 if (groups && groups[0] <= 0)
728 groups = NULL;
6a58444d
JM		 729 res = sae_parse_commit(&wpa_s->sme.sae, data, len, NULL, NULL,
730 groups);
731 if (res == SAE_SILENTLY_DISCARD) {
732 wpa_printf(MSG_DEBUG,
733 "SAE: Drop commit message due to reflection attack");
734 return 0;
735 }
736 if (res != WLAN_STATUS_SUCCESS)
21af6d15 737 return -1;
146f6c9a
JM		 738
739 if (sae_process_commit(&wpa_s->sme.sae) < 0) {
740 wpa_printf(MSG_DEBUG, "SAE: Failed to process peer "
741 "commit");
742 return -1;
743 }
744
d136c376
JM		 745 wpabuf_free(wpa_s->sme.sae_token);
746 wpa_s->sme.sae_token = NULL;
c10347f2
JM		 747 sme_send_authentication(wpa_s, wpa_s->current_bss,
748 wpa_s->current_ssid, 0);
749 return 0;
750 } else if (auth_transaction == 2) {
751 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm");
dd43026a 752 if (wpa_s->sme.sae.state != SAE_CONFIRMED)
21af6d15 753 return -1;
f2e9818f 754 if (sae_check_confirm(&wpa_s->sme.sae, data, len) < 0)
21af6d15 755 return -1;
dd43026a 756 wpa_s->sme.sae.state = SAE_ACCEPTED;
b4fd3613 757 sae_clear_temp_data(&wpa_s->sme.sae);
c10347f2
JM		 758 return 1;
759 }
760
761 return -1;
762}
763#endif /* CONFIG_SAE */
764
765
c2a04078
JM		 766void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
767{
c2a04078
JM		 768 struct wpa_ssid *ssid = wpa_s->current_ssid;
769
770 if (ssid == NULL) {
f049052b
BG		 771 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
772 "when network is not selected");
c2a04078
JM		 773 return;
774 }
775
776 if (wpa_s->wpa_state != WPA_AUTHENTICATING) {
f049052b
BG		 777 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
778 "when not in authenticating state");
c2a04078
JM		 779 return;
780 }
781
782 if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) {
f049052b
BG		 783 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with "
784 "unexpected peer " MACSTR,
785 MAC2STR(data->auth.peer));
c2a04078
JM		 786 return;
787 }
788
f049052b 789 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR
c10347f2 790 " auth_type=%d auth_transaction=%d status_code=%d",
f049052b 791 MAC2STR(data->auth.peer), data->auth.auth_type,
c10347f2 792 data->auth.auth_transaction, data->auth.status_code);
c2a04078
JM		 793 wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs",
794 data->auth.ies, data->auth.ies_len);
795
e29853bb
BG		 796 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
797
c10347f2
JM		 798#ifdef CONFIG_SAE
799 if (data->auth.auth_type == WLAN_AUTH_SAE) {
21af6d15
JM		 800 int res;
801 res = sme_sae_auth(wpa_s, data->auth.auth_transaction,
802 data->auth.status_code, data->auth.ies,
803 data->auth.ies_len);
804 if (res < 0) {
805 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
806 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
807
808 }
809 if (res != 1)
c10347f2 810 return;
47b55a3e
JM		 811
812 wpa_printf(MSG_DEBUG, "SME: SAE completed - setting PMK for "
813 "4-way handshake");
bc26ac50
JM		 814 wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN,
815 wpa_s->pending_bssid);
c10347f2
JM		 816 }
817#endif /* CONFIG_SAE */
818
c2a04078 819 if (data->auth.status_code != WLAN_STATUS_SUCCESS) {
ec4387f9
JM		 820 char *ie_txt = NULL;
821
822 if (data->auth.ies && data->auth.ies_len) {
823 size_t buflen = 2 * data->auth.ies_len + 1;
824 ie_txt = os_malloc(buflen);
825 if (ie_txt) {
826 wpa_snprintf_hex(ie_txt, buflen, data->auth.ies,
827 data->auth.ies_len);
828 }
829 }
830 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AUTH_REJECT MACSTR
831 " auth_type=%u auth_transaction=%u status_code=%u ie=%s",
832 MAC2STR(data->auth.peer), data->auth.auth_type,
833 data->auth.auth_transaction, data->auth.status_code,
834 ie_txt);
835 os_free(ie_txt);
cb1583f6
SO		 836
837 if (data->auth.status_code !=
838 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG ||
839 wpa_s->sme.auth_alg == data->auth.auth_type ||
7e6646c7 840 wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) {
0fb337c1 841 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
c1c02342 842 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
cb1583f6 843 return;
7e6646c7 844 }
cb1583f6 845
d9504779
JM		 846 wpas_connect_work_done(wpa_s);
847
cb1583f6
SO		 848 switch (data->auth.auth_type) {
849 case WLAN_AUTH_OPEN:
850 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED;
851
f049052b 852 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth");
cb1583f6
SO		 853 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
854 wpa_s->current_ssid);
855 return;
856
857 case WLAN_AUTH_SHARED_KEY:
858 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP;
859
f049052b 860 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth");
cb1583f6
SO		 861 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
862 wpa_s->current_ssid);
863 return;
864
865 default:
866 return;
867 }
c2a04078
JM		 868 }
869
870#ifdef CONFIG_IEEE80211R
871 if (data->auth.auth_type == WLAN_AUTH_FT) {
ee140ef9
JM		 872 if (wpa_ft_process_response(wpa_s->wpa, data->auth.ies,
873 data->auth.ies_len, 0,
874 data->auth.peer, NULL, 0) < 0) {
875 wpa_dbg(wpa_s, MSG_DEBUG,
876 "SME: FT Authentication response processing failed");
877 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid="
878 MACSTR
879 " reason=%d locally_generated=1",
880 MAC2STR(wpa_s->pending_bssid),
881 WLAN_REASON_DEAUTH_LEAVING);
882 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
883 wpa_supplicant_mark_disassoc(wpa_s);
884 return;
885 }
c2a04078
JM		 886 }
887#endif /* CONFIG_IEEE80211R */
888
71024cb2
JM		 889 sme_associate(wpa_s, ssid->mode, data->auth.peer,
890 data->auth.auth_type);
891}
892
893
894void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
895 const u8 *bssid, u16 auth_type)
896{
897 struct wpa_driver_associate_params params;
d9a27b04 898 struct ieee802_11_elems elems;
80e8a5ee
BG		 899#ifdef CONFIG_HT_OVERRIDES
900 struct ieee80211_ht_capabilities htcaps;
901 struct ieee80211_ht_capabilities htcaps_mask;
902#endif /* CONFIG_HT_OVERRIDES */
e9ee8dc3
JB		 903#ifdef CONFIG_VHT_OVERRIDES
904 struct ieee80211_vht_capabilities vhtcaps;
905 struct ieee80211_vht_capabilities vhtcaps_mask;
906#endif /* CONFIG_VHT_OVERRIDES */
71024cb2 907
c2a04078 908 os_memset(&params, 0, sizeof(params));
71024cb2 909 params.bssid = bssid;
c2a04078
JM		 910 params.ssid = wpa_s->sme.ssid;
911 params.ssid_len = wpa_s->sme.ssid_len;
4ec68377 912 params.freq.freq = wpa_s->sme.freq;
1f6c0ab8
BS		 913 params.bg_scan_period = wpa_s->current_ssid ?
914 wpa_s->current_ssid->bg_scan_period : -1;
c2a04078
JM		 915 params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
916 wpa_s->sme.assoc_req_ie : NULL;
917 params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
4848a38d
JM		 918 params.pairwise_suite = wpa_s->pairwise_cipher;
919 params.group_suite = wpa_s->group_cipher;
163f801e
JM		 920 params.key_mgmt_suite = wpa_s->key_mgmt;
921 params.wpa_proto = wpa_s->wpa_proto;
80e8a5ee
BG		 922#ifdef CONFIG_HT_OVERRIDES
923 os_memset(&htcaps, 0, sizeof(htcaps));
924 os_memset(&htcaps_mask, 0, sizeof(htcaps_mask));
925 params.htcaps = (u8 *) &htcaps;
926 params.htcaps_mask = (u8 *) &htcaps_mask;
927 wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, &params);
928#endif /* CONFIG_HT_OVERRIDES */
e9ee8dc3
JB		 929#ifdef CONFIG_VHT_OVERRIDES
930 os_memset(&vhtcaps, 0, sizeof(vhtcaps));
931 os_memset(&vhtcaps_mask, 0, sizeof(vhtcaps_mask));
932 params.vhtcaps = &vhtcaps;
933 params.vhtcaps_mask = &vhtcaps_mask;
934 wpa_supplicant_apply_vht_overrides(wpa_s, wpa_s->current_ssid, &params);
935#endif /* CONFIG_VHT_OVERRIDES */
c2a04078 936#ifdef CONFIG_IEEE80211R
71024cb2 937 if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
c2a04078
JM		 938 params.wpa_ie = wpa_s->sme.ft_ies;
939 params.wpa_ie_len = wpa_s->sme.ft_ies_len;
940 }
941#endif /* CONFIG_IEEE80211R */
71024cb2 942 params.mode = mode;
c2a04078 943 params.mgmt_frame_protection = wpa_s->sme.mfp;
b361d580 944 params.rrm_used = wpa_s->rrm.rrm_used;
62fa124c
JM		 945 if (wpa_s->sme.prev_bssid_set)
946 params.prev_bssid = wpa_s->sme.prev_bssid;
c2a04078
JM		 947
948 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
949 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
950 params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "",
4ec68377 951 params.freq.freq);
c2a04078
JM		 952
953 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
954
9efc3f2a
JM		 955 if (params.wpa_ie == NULL ||
956 ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0)
d9a27b04 957 < 0) {
f049052b 958 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!");
d9a27b04
JM		 959 os_memset(&elems, 0, sizeof(elems));
960 }
64fa840a
JM		 961 if (elems.rsn_ie) {
962 params.wpa_proto = WPA_PROTO_RSN;
d9a27b04
JM		 963 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2,
964 elems.rsn_ie_len + 2);
64fa840a
JM		 965 } else if (elems.wpa_ie) {
966 params.wpa_proto = WPA_PROTO_WPA;
d9a27b04
JM		 967 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
968 elems.wpa_ie_len + 2);
df0f01d9
JM		 969 } else if (elems.osen) {
970 params.wpa_proto = WPA_PROTO_OSEN;
971 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.osen - 2,
972 elems.osen_len + 2);
64fa840a 973 } else
d9a27b04 974 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
ffad8858 975 if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group)
6e3f4b89 976 params.p2p = 1;
d9a27b04 977
eea2fd9e
JM		 978 if (wpa_s->parent->set_sta_uapsd)
979 params.uapsd = wpa_s->parent->sta_uapsd;
980 else
981 params.uapsd = -1;
982
c2a04078 983 if (wpa_drv_associate(wpa_s, &params) < 0) {
f049052b
BG		 984 wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the "
985 "driver failed");
e5ad96b7 986 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
c1c02342 987 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
e5ad96b7 988 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
c2a04078
JM		 989 return;
990 }
991
e29853bb
BG		 992 eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s,
993 NULL);
c2a04078
JM		 994}
995
996
997int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
998 const u8 *ies, size_t ies_len)
999{
1000 if (md == NULL || ies == NULL) {
f049052b 1001 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain");
c2a04078
JM		 1002 os_free(wpa_s->sme.ft_ies);
1003 wpa_s->sme.ft_ies = NULL;
1004 wpa_s->sme.ft_ies_len = 0;
1005 wpa_s->sme.ft_used = 0;
1006 return 0;
1007 }
1008
1009 os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN);
1010 wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len);
1011 os_free(wpa_s->sme.ft_ies);
1012 wpa_s->sme.ft_ies = os_malloc(ies_len);
1013 if (wpa_s->sme.ft_ies == NULL)
1014 return -1;
1015 os_memcpy(wpa_s->sme.ft_ies, ies, ies_len);
1016 wpa_s->sme.ft_ies_len = ies_len;
1017 return 0;
1018}
efa46078
JM		 1019
1020
e29853bb 1021static void sme_deauth(struct wpa_supplicant *wpa_s)
efa46078 1022{
8bac466b
JM		 1023 int bssid_changed;
1024
8bac466b 1025 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
76d11d3f 1026
76d11d3f
JM		 1027 if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
1028 WLAN_REASON_DEAUTH_LEAVING) < 0) {
f049052b
BG		 1029 wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver "
1030 "failed");
76d11d3f 1031 }
62fa124c 1032 wpa_s->sme.prev_bssid_set = 0;
76d11d3f 1033
0fb337c1 1034 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
76d11d3f 1035 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
efa46078
JM		 1036 os_memset(wpa_s->bssid, 0, ETH_ALEN);
1037 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
8bac466b
JM		 1038 if (bssid_changed)
1039 wpas_notify_bssid_changed(wpa_s);
efa46078 1040}
da1fb17c
JM		 1041
1042
e29853bb
BG		 1043void sme_event_assoc_reject(struct wpa_supplicant *wpa_s,
1044 union wpa_event_data *data)
1045{
1046 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: "
1047 "status code %d", MAC2STR(wpa_s->pending_bssid),
1048 data->assoc_reject.status_code);
1049
1050 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1051
bc26ac50
JM		 1052#ifdef CONFIG_SAE
1053 if (wpa_s->sme.sae_pmksa_caching && wpa_s->current_ssid &&
1054 wpa_key_mgmt_sae(wpa_s->current_ssid->key_mgmt)) {
1055 wpa_dbg(wpa_s, MSG_DEBUG,
1056 "PMKSA caching attempt rejected - drop PMKSA cache entry and fall back to SAE authentication");
1057 wpa_sm_aborted_cached(wpa_s->wpa);
1058 wpa_sm_pmksa_cache_flush(wpa_s->wpa, wpa_s->current_ssid);
1059 if (wpa_s->current_bss) {
1060 struct wpa_bss *bss = wpa_s->current_bss;
1061 struct wpa_ssid *ssid = wpa_s->current_ssid;
1062
1063 wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
1064 WLAN_REASON_DEAUTH_LEAVING);
1065 wpas_connect_work_done(wpa_s);
1066 wpa_supplicant_mark_disassoc(wpa_s);
1067 wpa_supplicant_connect(wpa_s, bss, ssid);
1068 return;
1069 }
1070 }
1071#endif /* CONFIG_SAE */
1072
e29853bb
BG		 1073 /*
1074 * For now, unconditionally terminate the previous authentication. In
1075 * theory, this should not be needed, but mac80211 gets quite confused
1076 * if the authentication is left pending.. Some roaming cases might
1077 * benefit from using the previous authentication, so this could be
1078 * optimized in the future.
1079 */
1080 sme_deauth(wpa_s);
1081}
1082
1083
da1fb17c
JM		 1084void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s,
1085 union wpa_event_data *data)
1086{
f049052b 1087 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out");
0fb337c1 1088 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1193dc8f 1089 wpa_supplicant_mark_disassoc(wpa_s);
da1fb17c
JM		 1090}
1091
1092
1093void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s,
1094 union wpa_event_data *data)
1095{
f049052b 1096 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out");
0fb337c1 1097 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
da1fb17c 1098 wpa_supplicant_mark_disassoc(wpa_s);
da1fb17c 1099}
a84ed99e
JM		 1100
1101
1102void sme_event_disassoc(struct wpa_supplicant *wpa_s,
d7df0fa7 1103 struct disassoc_info *info)
a84ed99e 1104{
f049052b 1105 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received");
17fbb751 1106 if (wpa_s->sme.prev_bssid_set) {
a84ed99e
JM		 1107 /*
1108 * cfg80211/mac80211 can get into somewhat confused state if
1109 * the AP only disassociates us and leaves us in authenticated
1110 * state. For now, force the state to be cleared to avoid
1111 * confusing errors if we try to associate with the AP again.
1112 */
f049052b
BG		 1113 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear "
1114 "driver state");
7e26053a 1115 wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid,
a84ed99e
JM		 1116 WLAN_REASON_DEAUTH_LEAVING);
1117 }
1118}
7d878ca7
JM		 1119
1120
e29853bb
BG		 1121static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx)
1122{
1123 struct wpa_supplicant *wpa_s = eloop_ctx;
1124 if (wpa_s->wpa_state == WPA_AUTHENTICATING) {
1125 wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout");
1126 sme_deauth(wpa_s);
1127 }
1128}
1129
1130
1131static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx)
1132{
1133 struct wpa_supplicant *wpa_s = eloop_ctx;
1134 if (wpa_s->wpa_state == WPA_ASSOCIATING) {
1135 wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout");
1136 sme_deauth(wpa_s);
1137 }
1138}
1139
1140
1141void sme_state_changed(struct wpa_supplicant *wpa_s)
1142{
1143 /* Make sure timers are cleaned up appropriately. */
1144 if (wpa_s->wpa_state != WPA_ASSOCIATING)
1145 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1146 if (wpa_s->wpa_state != WPA_AUTHENTICATING)
1147 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1148}
1149
1150
1151void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s,
1152 const u8 *prev_pending_bssid)
1153{
1154 /*
1155 * mac80211-workaround to force deauth on failed auth cmd,
1156 * requires us to remain in authenticating state to allow the
1157 * second authentication attempt to be continued properly.
1158 */
1159 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication "
1160 "to proceed after disconnection event");
1161 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
1162 os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
1163
1164 /*
1165 * Re-arm authentication timer in case auth fails for whatever reason.
1166 */
1167 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1168 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
1169 NULL);
1170}
1171
1172
4e70bbf1
JM		 1173void sme_clear_on_disassoc(struct wpa_supplicant *wpa_s)
1174{
1175 wpa_s->sme.prev_bssid_set = 0;
1176#ifdef CONFIG_SAE
1177 wpabuf_free(wpa_s->sme.sae_token);
1178 wpa_s->sme.sae_token = NULL;
1179 sae_clear_data(&wpa_s->sme.sae);
1180#endif /* CONFIG_SAE */
1181#ifdef CONFIG_IEEE80211R
1182 if (wpa_s->sme.ft_ies)
1183 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
1184#endif /* CONFIG_IEEE80211R */
1185}
1186
1187
e29853bb
BG		 1188void sme_deinit(struct wpa_supplicant *wpa_s)
1189{
1190 os_free(wpa_s->sme.ft_ies);
1191 wpa_s->sme.ft_ies = NULL;
1192 wpa_s->sme.ft_ies_len = 0;
1193#ifdef CONFIG_IEEE80211W
1194 sme_stop_sa_query(wpa_s);
1195#endif /* CONFIG_IEEE80211W */
4e70bbf1 1196 sme_clear_on_disassoc(wpa_s);
e29853bb
BG		 1197
1198 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1199 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
c3701c66
RM		 1200 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
1201}
1202
1203
1204static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s,
1205 const u8 *chan_list, u8 num_channels,
1206 u8 num_intol)
1207{
1208 struct ieee80211_2040_bss_coex_ie *bc_ie;
1209 struct ieee80211_2040_intol_chan_report *ic_report;
1210 struct wpabuf *buf;
1211
31ded52e
JM		 1212 wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR
1213 " (num_channels=%u num_intol=%u)",
1214 MAC2STR(wpa_s->bssid), num_channels, num_intol);
1215 wpa_hexdump(MSG_DEBUG, "SME: 20/40 BSS Intolerant Channels",
1216 chan_list, num_channels);
c3701c66
RM		 1217
1218 buf = wpabuf_alloc(2 + /* action.category + action_code */
1219 sizeof(struct ieee80211_2040_bss_coex_ie) +
1220 sizeof(struct ieee80211_2040_intol_chan_report) +
1221 num_channels);
1222 if (buf == NULL)
1223 return;
1224
1225 wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC);
1226 wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX);
1227
1228 bc_ie = wpabuf_put(buf, sizeof(*bc_ie));
1229 bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE;
1230 bc_ie->length = 1;
1231 if (num_intol)
1232 bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ;
1233
1234 if (num_channels > 0) {
1235 ic_report = wpabuf_put(buf, sizeof(*ic_report));
1236 ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT;
1237 ic_report->length = num_channels + 1;
1238 ic_report->op_class = 0;
1239 os_memcpy(wpabuf_put(buf, num_channels), chan_list,
1240 num_channels);
1241 }
1242
1243 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
1244 wpa_s->own_addr, wpa_s->bssid,
1245 wpabuf_head(buf), wpabuf_len(buf), 0) < 0) {
1246 wpa_msg(wpa_s, MSG_INFO,
1247 "SME: Failed to send 20/40 BSS Coexistence frame");
1248 }
1249
1250 wpabuf_free(buf);
1251}
1252
1253
c3701c66
RM		 1254int sme_proc_obss_scan(struct wpa_supplicant *wpa_s)
1255{
1256 struct wpa_bss *bss;
1257 const u8 *ie;
1258 u16 ht_cap;
1259 u8 chan_list[P2P_MAX_CHANNELS], channel;
1260 u8 num_channels = 0, num_intol = 0, i;
1261
1262 if (!wpa_s->sme.sched_obss_scan)
1263 return 0;
1264
1265 wpa_s->sme.sched_obss_scan = 0;
1266 if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED)
1267 return 1;
1268
1269 /*
1270 * Check whether AP uses regulatory triplet or channel triplet in
1271 * country info. Right now the operating class of the BSS channel
1272 * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12),
1273 * based on the assumption that operating class triplet is not used in
1274 * beacon frame. If the First Channel Number/Operating Extension
1275 * Identifier octet has a positive integer value of 201 or greater,
1276 * then its operating class triplet.
1277 *
1278 * TODO: If Supported Operating Classes element is present in beacon
1279 * frame, have to lookup operating class in Annex E and fill them in
1280 * 2040 coex frame.
1281 */
1282 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY);
1283 if (ie && (ie[1] >= 6) && (ie[5] >= 201))
1284 return 1;
1285
1286 os_memset(chan_list, 0, sizeof(chan_list));
1287
1288 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1289 /* Skip other band bss */
e864c0ae
JM		 1290 enum hostapd_hw_mode mode;
1291 mode = ieee80211_freq_to_chan(bss->freq, &channel);
1292 if (mode != HOSTAPD_MODE_IEEE80211G &&
1293 mode != HOSTAPD_MODE_IEEE80211B)
c3701c66
RM		 1294 continue;
1295
1296 ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP);
1297 ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0;
31ded52e
JM		 1298 wpa_printf(MSG_DEBUG, "SME OBSS scan BSS " MACSTR
1299 " freq=%u chan=%u ht_cap=0x%x",
1300 MAC2STR(bss->bssid), bss->freq, channel, ht_cap);
c3701c66
RM		 1301
1302 if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) {
7f8eb34d
JM		 1303 if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)
1304 num_intol++;
1305
c3701c66
RM		 1306 /* Check whether the channel is already considered */
1307 for (i = 0; i < num_channels; i++) {
1308 if (channel == chan_list[i])
1309 break;
1310 }
1311 if (i != num_channels)
1312 continue;
1313
c3701c66
RM		 1314 chan_list[num_channels++] = channel;
1315 }
1316 }
1317
1318 sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol);
1319 return 1;
1320}
1321
1322
6434ad09
JM		 1323static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
1324 u16 num_modes,
1325 enum hostapd_hw_mode mode)
1326{
1327 u16 i;
1328
1329 for (i = 0; i < num_modes; i++) {
1330 if (modes[i].mode == mode)
1331 return &modes[i];
1332 }
1333
1334 return NULL;
1335}
1336
1337
d97a3c48
JM		 1338static void wpa_obss_scan_freqs_list(struct wpa_supplicant *wpa_s,
1339 struct wpa_driver_scan_params *params)
6434ad09 1340{
d97a3c48 1341 /* Include only affected channels */
6434ad09
JM		 1342 struct hostapd_hw_modes *mode;
1343 int count, i;
d97a3c48 1344 int start, end;
6434ad09 1345
d97a3c48
JM		 1346 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes,
1347 HOSTAPD_MODE_IEEE80211G);
6434ad09
JM		 1348 if (mode == NULL) {
1349 /* No channels supported in this band - use empty list */
1350 params->freqs = os_zalloc(sizeof(int));
1351 return;
1352 }
1353
d97a3c48
JM		 1354 if (wpa_s->sme.ht_sec_chan == HT_SEC_CHAN_UNKNOWN &&
1355 wpa_s->current_bss) {
1356 const u8 *ie;
1357
1358 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_OPERATION);
1359 if (ie && ie[1] >= 2) {
1360 u8 o;
1361
1362 o = ie[3] & HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK;
1363 if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE)
1364 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_ABOVE;
1365 else if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW)
1366 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_BELOW;
1367 }
1368 }
1369
1370 start = wpa_s->assoc_freq - 10;
1371 end = wpa_s->assoc_freq + 10;
1372 switch (wpa_s->sme.ht_sec_chan) {
1373 case HT_SEC_CHAN_UNKNOWN:
1374 /* HT40+ possible on channels 1..9 */
1375 if (wpa_s->assoc_freq <= 2452)
1376 start -= 20;
1377 /* HT40- possible on channels 5-13 */
1378 if (wpa_s->assoc_freq >= 2432)
1379 end += 20;
1380 break;
1381 case HT_SEC_CHAN_ABOVE:
1382 end += 20;
1383 break;
1384 case HT_SEC_CHAN_BELOW:
1385 start -= 20;
1386 break;
1387 }
1388 wpa_printf(MSG_DEBUG,
1389 "OBSS: assoc_freq %d possible affected range %d-%d",
1390 wpa_s->assoc_freq, start, end);
1391
f9884c09 1392 params->freqs = os_calloc(mode->num_channels + 1, sizeof(int));
6434ad09
JM		 1393 if (params->freqs == NULL)
1394 return;
1395 for (count = 0, i = 0; i < mode->num_channels; i++) {
d97a3c48
JM		 1396 int freq;
1397
6434ad09
JM		 1398 if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED)
1399 continue;
d97a3c48
JM		 1400 freq = mode->channels[i].freq;
1401 if (freq - 10 >= end || freq + 10 <= start)
1402 continue; /* not affected */
1403 params->freqs[count++] = freq;
6434ad09
JM		 1404 }
1405}
1406
1407
c3701c66
RM		 1408static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1409{
1410 struct wpa_supplicant *wpa_s = eloop_ctx;
1411 struct wpa_driver_scan_params params;
1412
1413 if (!wpa_s->current_bss) {
1414 wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request");
1415 return;
1416 }
1417
1418 os_memset(&params, 0, sizeof(params));
d97a3c48 1419 wpa_obss_scan_freqs_list(wpa_s, &params);
57a8f8af 1420 params.low_priority = 1;
c3701c66
RM		 1421 wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan");
1422
1423 if (wpa_supplicant_trigger_scan(wpa_s, &params))
1424 wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan");
1425 else
1426 wpa_s->sme.sched_obss_scan = 1;
6434ad09 1427 os_free(params.freqs);
c3701c66
RM		 1428
1429 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
1430 sme_obss_scan_timeout, wpa_s, NULL);
1431}
1432
1433
1434void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable)
1435{
1436 const u8 *ie;
1437 struct wpa_bss *bss = wpa_s->current_bss;
1438 struct wpa_ssid *ssid = wpa_s->current_ssid;
b6871ebb
AN		 1439 struct hostapd_hw_modes *hw_mode = NULL;
1440 int i;
c3701c66
RM		 1441
1442 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
1443 wpa_s->sme.sched_obss_scan = 0;
d97a3c48 1444 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_UNKNOWN;
c3701c66
RM		 1445 if (!enable)
1446 return;
1447
368b1957
AK		 1448 /*
1449 * Schedule OBSS scan if driver is using station SME in wpa_supplicant
1450 * or it expects OBSS scan to be performed by wpa_supplicant.
1451 */
1452 if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) ||
1453 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) ||
1454 ssid == NULL || ssid->mode != IEEE80211_MODE_INFRA)
1455 return;
c3701c66 1456
b6871ebb
AN		 1457 if (!wpa_s->hw.modes)
1458 return;
1459
1460 /* only HT caps in 11g mode are relevant */
1461 for (i = 0; i < wpa_s->hw.num_modes; i++) {
1462 hw_mode = &wpa_s->hw.modes[i];
1463 if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G)
1464 break;
1465 }
1466
1467 /* Driver does not support HT40 for 11g or doesn't have 11g. */
1468 if (i == wpa_s->hw.num_modes || !hw_mode ||
1469 !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1470 return;
c3701c66
RM		 1471
1472 if (bss == NULL || bss->freq < 2400 || bss->freq > 2500)
1473 return; /* Not associated on 2.4 GHz band */
1474
1475 /* Check whether AP supports HT40 */
1476 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP);
1477 if (!ie || ie[1] < 2 ||
1478 !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1479 return; /* AP does not support HT40 */
1480
1481 ie = wpa_bss_get_ie(wpa_s->current_bss,
1482 WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS);
1483 if (!ie || ie[1] < 14)
1484 return; /* AP does not request OBSS scans */
1485
1486 wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6);
1487 if (wpa_s->sme.obss_scan_int < 10) {
1488 wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u "
1489 "replaced with the minimum 10 sec",
1490 wpa_s->sme.obss_scan_int);
1491 wpa_s->sme.obss_scan_int = 10;
1492 }
1493 wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec",
1494 wpa_s->sme.obss_scan_int);
1495 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
1496 sme_obss_scan_timeout, wpa_s, NULL);
e29853bb
BG		 1497}
1498
1499
7d878ca7
JM		 1500#ifdef CONFIG_IEEE80211W
1501
1502static const unsigned int sa_query_max_timeout = 1000;
1503static const unsigned int sa_query_retry_timeout = 201;
1504
1505static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s)
1506{
1507 u32 tu;
46b8d4c0
JB		 1508 struct os_reltime now, passed;
1509 os_get_reltime(&now);
1510 os_reltime_sub(&now, &wpa_s->sme.sa_query_start, &passed);
7d878ca7
JM		 1511 tu = (passed.sec * 1000000 + passed.usec) / 1024;
1512 if (sa_query_max_timeout < tu) {
f049052b 1513 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out");
7d878ca7
JM		 1514 sme_stop_sa_query(wpa_s);
1515 wpa_supplicant_deauthenticate(
1516 wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID);
1517 return 1;
1518 }
1519
1520 return 0;
1521}
1522
1523
1524static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s,
1525 const u8 *trans_id)
1526{
1527 u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN];
f049052b
BG		 1528 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to "
1529 MACSTR, MAC2STR(wpa_s->bssid));
7d878ca7
JM		 1530 wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID",
1531 trans_id, WLAN_SA_QUERY_TR_ID_LEN);
1532 req[0] = WLAN_ACTION_SA_QUERY;
1533 req[1] = WLAN_SA_QUERY_REQUEST;
1534 os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN);
190b9062 1535 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
7d878ca7 1536 wpa_s->own_addr, wpa_s->bssid,
b106173a 1537 req, sizeof(req), 0) < 0)
f049052b
BG		 1538 wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query "
1539 "Request");
7d878ca7
JM		 1540}
1541
1542
1543static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
1544{
1545 struct wpa_supplicant *wpa_s = eloop_ctx;
1546 unsigned int timeout, sec, usec;
1547 u8 *trans_id, *nbuf;
1548
1549 if (wpa_s->sme.sa_query_count > 0 &&
1550 sme_check_sa_query_timeout(wpa_s))
1551 return;
1552
067ffa26
JM		 1553 nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id,
1554 wpa_s->sme.sa_query_count + 1,
1555 WLAN_SA_QUERY_TR_ID_LEN);
7d878ca7
JM		 1556 if (nbuf == NULL)
1557 return;
1558 if (wpa_s->sme.sa_query_count == 0) {
1559 /* Starting a new SA Query procedure */
46b8d4c0 1560 os_get_reltime(&wpa_s->sme.sa_query_start);
7d878ca7
JM		 1561 }
1562 trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
1563 wpa_s->sme.sa_query_trans_id = nbuf;
1564 wpa_s->sme.sa_query_count++;
1565
cb5ef952
JM		 1566 if (os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN) < 0) {
1567 wpa_printf(MSG_DEBUG, "Could not generate SA Query ID");
1568 return;
1569 }
7d878ca7
JM		 1570
1571 timeout = sa_query_retry_timeout;
1572 sec = ((timeout / 1000) * 1024) / 1000;
1573 usec = (timeout % 1000) * 1024;
1574 eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL);
1575
f049052b
BG		 1576 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d",
1577 wpa_s->sme.sa_query_count);
7d878ca7
JM		 1578
1579 sme_send_sa_query_req(wpa_s, trans_id);
1580}
1581
1582
1583static void sme_start_sa_query(struct wpa_supplicant *wpa_s)
1584{
1585 sme_sa_query_timer(wpa_s, NULL);
1586}
1587
1588
19df9b07 1589static void sme_stop_sa_query(struct wpa_supplicant *wpa_s)
7d878ca7
JM		 1590{
1591 eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL);
1592 os_free(wpa_s->sme.sa_query_trans_id);
1593 wpa_s->sme.sa_query_trans_id = NULL;
1594 wpa_s->sme.sa_query_count = 0;
1595}
1596
1597
1598void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa,
1599 const u8 *da, u16 reason_code)
1600{
1601 struct wpa_ssid *ssid;
3302b7c2 1602 struct os_reltime now;
7d878ca7 1603
7d878ca7
JM		 1604 if (wpa_s->wpa_state != WPA_COMPLETED)
1605 return;
1606 ssid = wpa_s->current_ssid;
3f56a2b7 1607 if (wpas_get_ssid_pmf(wpa_s, ssid) == NO_MGMT_FRAME_PROTECTION)
7d878ca7
JM		 1608 return;
1609 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
1610 return;
1611 if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA &&
1612 reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA)
1613 return;
1614 if (wpa_s->sme.sa_query_count > 0)
1615 return;
1616
3302b7c2
JM		 1617 os_get_reltime(&now);
1618 if (wpa_s->sme.last_unprot_disconnect.sec &&
1619 !os_reltime_expired(&now, &wpa_s->sme.last_unprot_disconnect, 10))
1620 return; /* limit SA Query procedure frequency */
1621 wpa_s->sme.last_unprot_disconnect = now;
1622
f049052b
BG		 1623 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - "
1624 "possible AP/STA state mismatch - trigger SA Query");
7d878ca7
JM		 1625 sme_start_sa_query(wpa_s);
1626}
1627
1628
1629void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa,
1630 const u8 *data, size_t len)
1631{
1632 int i;
1633
1634 if (wpa_s->sme.sa_query_trans_id == NULL ||
1635 len < 1 + WLAN_SA_QUERY_TR_ID_LEN ||
1636 data[0] != WLAN_SA_QUERY_RESPONSE)
1637 return;
f049052b
BG		 1638 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from "
1639 MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
7d878ca7
JM		 1640
1641 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
1642 return;
1643
1644 for (i = 0; i < wpa_s->sme.sa_query_count; i++) {
1645 if (os_memcmp(wpa_s->sme.sa_query_trans_id +
1646 i * WLAN_SA_QUERY_TR_ID_LEN,
1647 data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0)
1648 break;
1649 }
1650
1651 if (i >= wpa_s->sme.sa_query_count) {
f049052b
BG		 1652 wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query "
1653 "transaction identifier found");
7d878ca7
JM		 1654 return;
1655 }
1656
f049052b
BG		 1657 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received "
1658 "from " MACSTR, MAC2STR(sa));
7d878ca7
JM		 1659 sme_stop_sa_query(wpa_s);
1660}
1661
1662#endif /* CONFIG_IEEE80211W */
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