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tests: Verify CoA-Request behavior
[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
215ae884
JM		 140static void sme_send_authentication(struct wpa_supplicant *wpa_s,
141 struct wpa_bss *bss, struct wpa_ssid *ssid,
142 int start)
c2a04078
JM		 143{
144 struct wpa_driver_auth_params params;
8bac466b 145 struct wpa_ssid *old_ssid;
fdbe50ed 146#ifdef CONFIG_IEEE80211R
c2a04078 147 const u8 *ie;
fdbe50ed 148#endif /* CONFIG_IEEE80211R */
c2a04078
JM		 149#ifdef CONFIG_IEEE80211R
150 const u8 *md = NULL;
151#endif /* CONFIG_IEEE80211R */
8bac466b 152 int i, bssid_changed;
c10347f2 153 struct wpabuf *resp = NULL;
03e47c9c
JM		 154 u8 ext_capab[10];
155 int ext_capab_len;
c2a04078
JM		 156
157 if (bss == NULL) {
f049052b
BG		 158 wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for "
159 "the network");
6ac4b15e 160 wpas_connect_work_done(wpa_s);
c2a04078
JM		 161 return;
162 }
163
8f770587
JM		 164 wpa_s->current_bss = bss;
165
c2a04078
JM		 166 os_memset(&params, 0, sizeof(params));
167 wpa_s->reassociate = 0;
168
169 params.freq = bss->freq;
170 params.bssid = bss->bssid;
6fa81a3b
JM		 171 params.ssid = bss->ssid;
172 params.ssid_len = bss->ssid_len;
2f4f73b1 173 params.p2p = ssid->p2p_group;
c2a04078 174
62fa124c
JM		 175 if (wpa_s->sme.ssid_len != params.ssid_len ||
176 os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0)
177 wpa_s->sme.prev_bssid_set = 0;
178
c2a04078
JM		 179 wpa_s->sme.freq = params.freq;
180 os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len);
181 wpa_s->sme.ssid_len = params.ssid_len;
182
abd9fafa 183 params.auth_alg = WPA_AUTH_ALG_OPEN;
c2a04078
JM		 184#ifdef IEEE8021X_EAPOL
185 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
186 if (ssid->leap) {
187 if (ssid->non_leap == 0)
abd9fafa 188 params.auth_alg = WPA_AUTH_ALG_LEAP;
c2a04078 189 else
abd9fafa 190 params.auth_alg |= WPA_AUTH_ALG_LEAP;
c2a04078
JM		 191 }
192 }
193#endif /* IEEE8021X_EAPOL */
f049052b
BG		 194 wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x",
195 params.auth_alg);
c2a04078 196 if (ssid->auth_alg) {
abd9fafa 197 params.auth_alg = ssid->auth_alg;
f049052b
BG		 198 wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: "
199 "0x%x", params.auth_alg);
c2a04078 200 }
c10347f2
JM		 201#ifdef CONFIG_SAE
202 if (wpa_key_mgmt_sae(ssid->key_mgmt)) {
203 const u8 *rsn;
204 struct wpa_ie_data ied;
205
206 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
207 if (rsn &&
208 wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0) {
209 if (wpa_key_mgmt_sae(ied.key_mgmt)) {
210 wpa_dbg(wpa_s, MSG_DEBUG, "Using SAE auth_alg");
211 params.auth_alg = WPA_AUTH_ALG_SAE;
212 }
213 }
214 }
215#endif /* CONFIG_SAE */
c2a04078 216
a0b2f99b
JM		 217 for (i = 0; i < NUM_WEP_KEYS; i++) {
218 if (ssid->wep_key_len[i])
219 params.wep_key[i] = ssid->wep_key[i];
220 params.wep_key_len[i] = ssid->wep_key_len[i];
221 }
222 params.wep_tx_keyidx = ssid->wep_tx_keyidx;
223
8bac466b 224 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
c2a04078
JM		 225 os_memset(wpa_s->bssid, 0, ETH_ALEN);
226 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
8bac466b
JM		 227 if (bssid_changed)
228 wpas_notify_bssid_changed(wpa_s);
c2a04078 229
f337f0e9
JM		 230 if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
231 wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
0bf927a0 232 wpa_key_mgmt_wpa(ssid->key_mgmt)) {
c2a04078 233 int try_opportunistic;
6e202021
JM		 234 try_opportunistic = (ssid->proactive_key_caching < 0 ?
235 wpa_s->conf->okc :
236 ssid->proactive_key_caching) &&
c2a04078
JM		 237 (ssid->proto & WPA_PROTO_RSN);
238 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
239 wpa_s->current_ssid,
240 try_opportunistic) == 0)
241 eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
242 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
243 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
244 wpa_s->sme.assoc_req_ie,
245 &wpa_s->sme.assoc_req_ie_len)) {
f049052b
BG		 246 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
247 "key management and encryption suites");
6ac4b15e 248 wpas_connect_work_done(wpa_s);
c2a04078
JM		 249 return;
250 }
a3f7e518
JM		 251 } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
252 wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) {
253 /*
254 * Both WPA and non-WPA IEEE 802.1X enabled in configuration -
255 * use non-WPA since the scan results did not indicate that the
256 * AP is using WPA or WPA2.
257 */
258 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
259 wpa_s->sme.assoc_req_ie_len = 0;
0bf927a0 260 } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
c2a04078
JM		 261 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
262 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
263 wpa_s->sme.assoc_req_ie,
264 &wpa_s->sme.assoc_req_ie_len)) {
f049052b
BG		 265 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
266 "key management and encryption suites (no "
267 "scan results)");
6ac4b15e 268 wpas_connect_work_done(wpa_s);
c2a04078
JM		 269 return;
270 }
271#ifdef CONFIG_WPS
272 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
273 struct wpabuf *wps_ie;
274 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
275 if (wps_ie && wpabuf_len(wps_ie) <=
276 sizeof(wpa_s->sme.assoc_req_ie)) {
277 wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie);
278 os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie),
279 wpa_s->sme.assoc_req_ie_len);
280 } else
281 wpa_s->sme.assoc_req_ie_len = 0;
282 wpabuf_free(wps_ie);
283 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
284#endif /* CONFIG_WPS */
285 } else {
286 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
287 wpa_s->sme.assoc_req_ie_len = 0;
288 }
289
290#ifdef CONFIG_IEEE80211R
6fa81a3b 291 ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
c2a04078
JM		 292 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
293 md = ie + 2;
e7846b68 294 wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
c2a04078
JM		 295 if (md) {
296 /* Prepare for the next transition */
76b7981d 297 wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
c2a04078
JM		 298 }
299
0bf927a0 300 if (md && wpa_key_mgmt_ft(ssid->key_mgmt)) {
c2a04078
JM		 301 if (wpa_s->sme.assoc_req_ie_len + 5 <
302 sizeof(wpa_s->sme.assoc_req_ie)) {
303 struct rsn_mdie *mdie;
304 u8 *pos = wpa_s->sme.assoc_req_ie +
305 wpa_s->sme.assoc_req_ie_len;
306 *pos++ = WLAN_EID_MOBILITY_DOMAIN;
307 *pos++ = sizeof(*mdie);
308 mdie = (struct rsn_mdie *) pos;
309 os_memcpy(mdie->mobility_domain, md,
310 MOBILITY_DOMAIN_ID_LEN);
f4ec630d 311 mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN];
c2a04078
JM		 312 wpa_s->sme.assoc_req_ie_len += 5;
313 }
314
315 if (wpa_s->sme.ft_used &&
0d7b4409
JM		 316 os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 &&
317 wpa_sm_has_ptk(wpa_s->wpa)) {
f049052b
BG		 318 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT "
319 "over-the-air");
abd9fafa 320 params.auth_alg = WPA_AUTH_ALG_FT;
c2a04078
JM		 321 params.ie = wpa_s->sme.ft_ies;
322 params.ie_len = wpa_s->sme.ft_ies_len;
323 }
324 }
325#endif /* CONFIG_IEEE80211R */
326
327#ifdef CONFIG_IEEE80211W
62d49803
JM		 328 wpa_s->sme.mfp = ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
329 wpa_s->conf->pmf : ssid->ieee80211w;
330 if (wpa_s->sme.mfp != NO_MGMT_FRAME_PROTECTION) {
6fa81a3b 331 const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
c2a04078
JM		 332 struct wpa_ie_data _ie;
333 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 &&
334 _ie.capabilities &
335 (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
f049052b
BG		 336 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports "
337 "MFP: require MFP");
c2a04078
JM		 338 wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED;
339 }
340 }
341#endif /* CONFIG_IEEE80211W */
342
5f3a6aa0
JM		 343#ifdef CONFIG_P2P
344 if (wpa_s->global->p2p) {
345 u8 *pos;
346 size_t len;
347 int res;
5f3a6aa0
JM		 348 pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
349 len = sizeof(wpa_s->sme.assoc_req_ie) -
350 wpa_s->sme.assoc_req_ie_len;
ffad8858
JM		 351 res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len,
352 ssid->p2p_group);
5f3a6aa0
JM		 353 if (res >= 0)
354 wpa_s->sme.assoc_req_ie_len += res;
355 }
356#endif /* CONFIG_P2P */
357
cb418324 358#ifdef CONFIG_HS20
55a2df43 359 if (is_hs20_network(wpa_s, ssid, bss)) {
cb418324
JM		 360 struct wpabuf *hs20;
361 hs20 = wpabuf_alloc(20);
362 if (hs20) {
363 wpas_hs20_add_indication(hs20);
364 os_memcpy(wpa_s->sme.assoc_req_ie +
365 wpa_s->sme.assoc_req_ie_len,
366 wpabuf_head(hs20), wpabuf_len(hs20));
367 wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20);
368 wpabuf_free(hs20);
369 }
370 }
371#endif /* CONFIG_HS20 */
372
03e47c9c
JM		 373 ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab);
374 if (ext_capab_len > 0) {
92cbcf91
JM		 375 u8 *pos = wpa_s->sme.assoc_req_ie;
376 if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN)
377 pos += 2 + pos[1];
03e47c9c 378 os_memmove(pos + ext_capab_len, pos,
92cbcf91
JM		 379 wpa_s->sme.assoc_req_ie_len -
380 (pos - wpa_s->sme.assoc_req_ie));
03e47c9c
JM		 381 wpa_s->sme.assoc_req_ie_len += ext_capab_len;
382 os_memcpy(pos, ext_capab, ext_capab_len);
92cbcf91 383 }
92cbcf91 384
c10347f2
JM		 385#ifdef CONFIG_SAE
386 if (params.auth_alg == WPA_AUTH_ALG_SAE) {
387 if (start)
8e31e955
JM		 388 resp = sme_auth_build_sae_commit(wpa_s, ssid,
389 bss->bssid);
c10347f2
JM		 390 else
391 resp = sme_auth_build_sae_confirm(wpa_s);
6ac4b15e
JM		 392 if (resp == NULL) {
393 wpas_connect_work_done(wpa_s);
c10347f2 394 return;
6ac4b15e 395 }
c10347f2
JM		 396 params.sae_data = wpabuf_head(resp);
397 params.sae_data_len = wpabuf_len(resp);
dd43026a 398 wpa_s->sme.sae.state = start ? SAE_COMMITTED : SAE_CONFIRMED;
c10347f2
JM		 399 }
400#endif /* CONFIG_SAE */
401
a4cba8f1 402 wpa_supplicant_cancel_sched_scan(wpa_s);
c2a04078
JM		 403 wpa_supplicant_cancel_scan(wpa_s);
404
f049052b 405 wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR
c2a04078
JM		 406 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
407 wpa_ssid_txt(params.ssid, params.ssid_len), params.freq);
408
409 wpa_clear_keys(wpa_s, bss->bssid);
410 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
8bac466b 411 old_ssid = wpa_s->current_ssid;
c2a04078
JM		 412 wpa_s->current_ssid = ssid;
413 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
414 wpa_supplicant_initiate_eapol(wpa_s);
8bac466b
JM		 415 if (old_ssid != wpa_s->current_ssid)
416 wpas_notify_network_changed(wpa_s);
c2a04078 417
62c72d72 418 wpa_s->sme.auth_alg = params.auth_alg;
c2a04078 419 if (wpa_drv_authenticate(wpa_s, &params) < 0) {
f049052b 420 wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the "
c2a04078 421 "driver failed");
ed57c590 422 wpas_connection_failed(wpa_s, bss->bssid);
1193dc8f 423 wpa_supplicant_mark_disassoc(wpa_s);
c10347f2 424 wpabuf_free(resp);
6ac4b15e 425 wpas_connect_work_done(wpa_s);
c2a04078
JM		 426 return;
427 }
428
e29853bb
BG		 429 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
430 NULL);
c2a04078
JM		 431
432 /*
433 * Association will be started based on the authentication event from
434 * the driver.
435 */
c10347f2
JM		 436
437 wpabuf_free(resp);
438}
439
440
6ac4b15e
JM		 441static void sme_auth_start_cb(struct wpa_radio_work *work, int deinit)
442{
443 struct wpa_connect_work *cwork = work->ctx;
444 struct wpa_supplicant *wpa_s = work->wpa_s;
445
446 if (deinit) {
447 wpas_connect_work_free(cwork);
448 return;
449 }
450
451 wpa_s->connect_work = work;
452
453 if (!wpas_valid_bss_ssid(wpa_s, cwork->bss, cwork->ssid)) {
454 wpa_dbg(wpa_s, MSG_DEBUG, "SME: BSS/SSID entry for authentication not valid anymore - drop connection attempt");
455 wpas_connect_work_done(wpa_s);
456 return;
457 }
458
459 sme_send_authentication(wpa_s, cwork->bss, cwork->ssid, 1);
460}
461
462
c10347f2
JM		 463void sme_authenticate(struct wpa_supplicant *wpa_s,
464 struct wpa_bss *bss, struct wpa_ssid *ssid)
465{
6ac4b15e
JM		 466 struct wpa_connect_work *cwork;
467
468 if (bss == NULL || ssid == NULL)
469 return;
470 if (wpa_s->connect_work) {
471 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reject sme_authenticate() call since connect_work exist");
472 return;
473 }
474
475 cwork = os_zalloc(sizeof(*cwork));
476 if (cwork == NULL)
477 return;
478 cwork->bss = bss;
479 cwork->ssid = ssid;
480 cwork->sme = 1;
481
98efcc41 482#ifdef CONFIG_SAE
dd43026a 483 wpa_s->sme.sae.state = SAE_NOTHING;
98efcc41 484 wpa_s->sme.sae.send_confirm = 0;
18ca7332 485 wpa_s->sme.sae_group_index = 0;
98efcc41 486#endif /* CONFIG_SAE */
6ac4b15e
JM		 487
488 if (radio_add_work(wpa_s, bss->freq, "sme-connect", 1,
489 sme_auth_start_cb, cwork) < 0)
490 wpas_connect_work_free(cwork);
c2a04078
JM		 491}
492
493
c10347f2 494#ifdef CONFIG_SAE
21af6d15 495
c10347f2
JM		 496static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction,
497 u16 status_code, const u8 *data, size_t len)
498{
499 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u "
500 "status code %u", auth_transaction, status_code);
c10347f2 501
d136c376
JM		 502 if (auth_transaction == 1 &&
503 status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ &&
504 wpa_s->sme.sae.state == SAE_COMMITTED &&
505 wpa_s->current_bss && wpa_s->current_ssid) {
506 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE anti-clogging token "
507 "requested");
508 wpabuf_free(wpa_s->sme.sae_token);
509 wpa_s->sme.sae_token = wpabuf_alloc_copy(data, len);
510 sme_send_authentication(wpa_s, wpa_s->current_bss,
511 wpa_s->current_ssid, 1);
512 return 0;
513 }
514
625f202a
JM		 515 if (auth_transaction == 1 &&
516 status_code == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED &&
517 wpa_s->sme.sae.state == SAE_COMMITTED &&
518 wpa_s->current_bss && wpa_s->current_ssid) {
519 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE group not supported");
520 wpa_s->sme.sae_group_index++;
521 if (sme_set_sae_group(wpa_s) < 0)
522 return -1; /* no other groups enabled */
523 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Try next enabled SAE group");
524 sme_send_authentication(wpa_s, wpa_s->current_bss,
525 wpa_s->current_ssid, 1);
526 return 0;
527 }
528
c10347f2
JM		 529 if (status_code != WLAN_STATUS_SUCCESS)
530 return -1;
531
532 if (auth_transaction == 1) {
18ca7332
JM		 533 int *groups = wpa_s->conf->sae_groups;
534
c10347f2
JM		 535 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit");
536 if (wpa_s->current_bss == NULL ||
537 wpa_s->current_ssid == NULL)
538 return -1;
dd43026a 539 if (wpa_s->sme.sae.state != SAE_COMMITTED)
21af6d15 540 return -1;
18ca7332
JM		 541 if (groups && groups[0] <= 0)
542 groups = NULL;
625f202a 543 if (sae_parse_commit(&wpa_s->sme.sae, data, len, NULL, NULL,
18ca7332 544 groups) != WLAN_STATUS_SUCCESS)
21af6d15 545 return -1;
146f6c9a
JM		 546
547 if (sae_process_commit(&wpa_s->sme.sae) < 0) {
548 wpa_printf(MSG_DEBUG, "SAE: Failed to process peer "
549 "commit");
550 return -1;
551 }
552
d136c376
JM		 553 wpabuf_free(wpa_s->sme.sae_token);
554 wpa_s->sme.sae_token = NULL;
c10347f2
JM		 555 sme_send_authentication(wpa_s, wpa_s->current_bss,
556 wpa_s->current_ssid, 0);
557 return 0;
558 } else if (auth_transaction == 2) {
559 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm");
dd43026a 560 if (wpa_s->sme.sae.state != SAE_CONFIRMED)
21af6d15 561 return -1;
f2e9818f 562 if (sae_check_confirm(&wpa_s->sme.sae, data, len) < 0)
21af6d15 563 return -1;
dd43026a 564 wpa_s->sme.sae.state = SAE_ACCEPTED;
b4fd3613 565 sae_clear_temp_data(&wpa_s->sme.sae);
c10347f2
JM		 566 return 1;
567 }
568
569 return -1;
570}
571#endif /* CONFIG_SAE */
572
573
c2a04078
JM		 574void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
575{
c2a04078
JM		 576 struct wpa_ssid *ssid = wpa_s->current_ssid;
577
578 if (ssid == NULL) {
f049052b
BG		 579 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
580 "when network is not selected");
c2a04078
JM		 581 return;
582 }
583
584 if (wpa_s->wpa_state != WPA_AUTHENTICATING) {
f049052b
BG		 585 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
586 "when not in authenticating state");
c2a04078
JM		 587 return;
588 }
589
590 if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) {
f049052b
BG		 591 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with "
592 "unexpected peer " MACSTR,
593 MAC2STR(data->auth.peer));
c2a04078
JM		 594 return;
595 }
596
f049052b 597 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR
c10347f2 598 " auth_type=%d auth_transaction=%d status_code=%d",
f049052b 599 MAC2STR(data->auth.peer), data->auth.auth_type,
c10347f2 600 data->auth.auth_transaction, data->auth.status_code);
c2a04078
JM		 601 wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs",
602 data->auth.ies, data->auth.ies_len);
603
e29853bb
BG		 604 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
605
c10347f2
JM		 606#ifdef CONFIG_SAE
607 if (data->auth.auth_type == WLAN_AUTH_SAE) {
21af6d15
JM		 608 int res;
609 res = sme_sae_auth(wpa_s, data->auth.auth_transaction,
610 data->auth.status_code, data->auth.ies,
611 data->auth.ies_len);
612 if (res < 0) {
613 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
614 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
615
616 }
617 if (res != 1)
c10347f2 618 return;
47b55a3e
JM		 619
620 wpa_printf(MSG_DEBUG, "SME: SAE completed - setting PMK for "
621 "4-way handshake");
622 wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN);
c10347f2
JM		 623 }
624#endif /* CONFIG_SAE */
625
c2a04078 626 if (data->auth.status_code != WLAN_STATUS_SUCCESS) {
f049052b
BG		 627 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication failed (status "
628 "code %d)", data->auth.status_code);
cb1583f6
SO		 629
630 if (data->auth.status_code !=
631 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG ||
632 wpa_s->sme.auth_alg == data->auth.auth_type ||
7e6646c7 633 wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) {
0fb337c1 634 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
c1c02342 635 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
cb1583f6 636 return;
7e6646c7 637 }
cb1583f6 638
d9504779
JM		 639 wpas_connect_work_done(wpa_s);
640
cb1583f6
SO		 641 switch (data->auth.auth_type) {
642 case WLAN_AUTH_OPEN:
643 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED;
644
f049052b 645 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth");
cb1583f6
SO		 646 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
647 wpa_s->current_ssid);
648 return;
649
650 case WLAN_AUTH_SHARED_KEY:
651 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP;
652
f049052b 653 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth");
cb1583f6
SO		 654 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
655 wpa_s->current_ssid);
656 return;
657
658 default:
659 return;
660 }
c2a04078
JM		 661 }
662
663#ifdef CONFIG_IEEE80211R
664 if (data->auth.auth_type == WLAN_AUTH_FT) {
665 union wpa_event_data edata;
666 os_memset(&edata, 0, sizeof(edata));
667 edata.ft_ies.ies = data->auth.ies;
668 edata.ft_ies.ies_len = data->auth.ies_len;
669 os_memcpy(edata.ft_ies.target_ap, data->auth.peer, ETH_ALEN);
670 wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &edata);
671 }
672#endif /* CONFIG_IEEE80211R */
673
71024cb2
JM		 674 sme_associate(wpa_s, ssid->mode, data->auth.peer,
675 data->auth.auth_type);
676}
677
678
679void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
680 const u8 *bssid, u16 auth_type)
681{
682 struct wpa_driver_associate_params params;
d9a27b04 683 struct ieee802_11_elems elems;
80e8a5ee
BG		 684#ifdef CONFIG_HT_OVERRIDES
685 struct ieee80211_ht_capabilities htcaps;
686 struct ieee80211_ht_capabilities htcaps_mask;
687#endif /* CONFIG_HT_OVERRIDES */
e9ee8dc3
JB		 688#ifdef CONFIG_VHT_OVERRIDES
689 struct ieee80211_vht_capabilities vhtcaps;
690 struct ieee80211_vht_capabilities vhtcaps_mask;
691#endif /* CONFIG_VHT_OVERRIDES */
71024cb2 692
c2a04078 693 os_memset(&params, 0, sizeof(params));
71024cb2 694 params.bssid = bssid;
c2a04078
JM		 695 params.ssid = wpa_s->sme.ssid;
696 params.ssid_len = wpa_s->sme.ssid_len;
697 params.freq = wpa_s->sme.freq;
1f6c0ab8
BS		 698 params.bg_scan_period = wpa_s->current_ssid ?
699 wpa_s->current_ssid->bg_scan_period : -1;
c2a04078
JM		 700 params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
701 wpa_s->sme.assoc_req_ie : NULL;
702 params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
4848a38d
JM		 703 params.pairwise_suite = wpa_s->pairwise_cipher;
704 params.group_suite = wpa_s->group_cipher;
80e8a5ee
BG		 705#ifdef CONFIG_HT_OVERRIDES
706 os_memset(&htcaps, 0, sizeof(htcaps));
707 os_memset(&htcaps_mask, 0, sizeof(htcaps_mask));
708 params.htcaps = (u8 *) &htcaps;
709 params.htcaps_mask = (u8 *) &htcaps_mask;
710 wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, &params);
711#endif /* CONFIG_HT_OVERRIDES */
e9ee8dc3
JB		 712#ifdef CONFIG_VHT_OVERRIDES
713 os_memset(&vhtcaps, 0, sizeof(vhtcaps));
714 os_memset(&vhtcaps_mask, 0, sizeof(vhtcaps_mask));
715 params.vhtcaps = &vhtcaps;
716 params.vhtcaps_mask = &vhtcaps_mask;
717 wpa_supplicant_apply_vht_overrides(wpa_s, wpa_s->current_ssid, &params);
718#endif /* CONFIG_VHT_OVERRIDES */
c2a04078 719#ifdef CONFIG_IEEE80211R
71024cb2 720 if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
c2a04078
JM		 721 params.wpa_ie = wpa_s->sme.ft_ies;
722 params.wpa_ie_len = wpa_s->sme.ft_ies_len;
723 }
724#endif /* CONFIG_IEEE80211R */
71024cb2 725 params.mode = mode;
c2a04078 726 params.mgmt_frame_protection = wpa_s->sme.mfp;
62fa124c
JM		 727 if (wpa_s->sme.prev_bssid_set)
728 params.prev_bssid = wpa_s->sme.prev_bssid;
c2a04078
JM		 729
730 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
731 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
732 params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "",
733 params.freq);
734
735 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
736
9efc3f2a
JM		 737 if (params.wpa_ie == NULL ||
738 ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0)
d9a27b04 739 < 0) {
f049052b 740 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!");
d9a27b04
JM		 741 os_memset(&elems, 0, sizeof(elems));
742 }
64fa840a
JM		 743 if (elems.rsn_ie) {
744 params.wpa_proto = WPA_PROTO_RSN;
d9a27b04
JM		 745 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2,
746 elems.rsn_ie_len + 2);
64fa840a
JM		 747 } else if (elems.wpa_ie) {
748 params.wpa_proto = WPA_PROTO_WPA;
d9a27b04
JM		 749 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
750 elems.wpa_ie_len + 2);
64fa840a 751 } else
d9a27b04 752 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
ffad8858 753 if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group)
6e3f4b89 754 params.p2p = 1;
d9a27b04 755
eea2fd9e
JM		 756 if (wpa_s->parent->set_sta_uapsd)
757 params.uapsd = wpa_s->parent->sta_uapsd;
758 else
759 params.uapsd = -1;
760
c2a04078 761 if (wpa_drv_associate(wpa_s, &params) < 0) {
f049052b
BG		 762 wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the "
763 "driver failed");
e5ad96b7 764 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
c1c02342 765 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
e5ad96b7 766 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
c2a04078
JM		 767 return;
768 }
769
e29853bb
BG		 770 eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s,
771 NULL);
c2a04078
JM		 772}
773
774
775int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
776 const u8 *ies, size_t ies_len)
777{
778 if (md == NULL || ies == NULL) {
f049052b 779 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain");
c2a04078
JM		 780 os_free(wpa_s->sme.ft_ies);
781 wpa_s->sme.ft_ies = NULL;
782 wpa_s->sme.ft_ies_len = 0;
783 wpa_s->sme.ft_used = 0;
784 return 0;
785 }
786
787 os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN);
788 wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len);
789 os_free(wpa_s->sme.ft_ies);
790 wpa_s->sme.ft_ies = os_malloc(ies_len);
791 if (wpa_s->sme.ft_ies == NULL)
792 return -1;
793 os_memcpy(wpa_s->sme.ft_ies, ies, ies_len);
794 wpa_s->sme.ft_ies_len = ies_len;
795 return 0;
796}
efa46078
JM		 797
798
e29853bb 799static void sme_deauth(struct wpa_supplicant *wpa_s)
efa46078 800{
8bac466b
JM		 801 int bssid_changed;
802
8bac466b 803 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
76d11d3f 804
76d11d3f
JM		 805 if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
806 WLAN_REASON_DEAUTH_LEAVING) < 0) {
f049052b
BG		 807 wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver "
808 "failed");
76d11d3f 809 }
62fa124c 810 wpa_s->sme.prev_bssid_set = 0;
76d11d3f 811
0fb337c1 812 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
76d11d3f 813 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
efa46078
JM		 814 os_memset(wpa_s->bssid, 0, ETH_ALEN);
815 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
8bac466b
JM		 816 if (bssid_changed)
817 wpas_notify_bssid_changed(wpa_s);
efa46078 818}
da1fb17c
JM		 819
820
e29853bb
BG		 821void sme_event_assoc_reject(struct wpa_supplicant *wpa_s,
822 union wpa_event_data *data)
823{
824 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: "
825 "status code %d", MAC2STR(wpa_s->pending_bssid),
826 data->assoc_reject.status_code);
827
828 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
829
830 /*
831 * For now, unconditionally terminate the previous authentication. In
832 * theory, this should not be needed, but mac80211 gets quite confused
833 * if the authentication is left pending.. Some roaming cases might
834 * benefit from using the previous authentication, so this could be
835 * optimized in the future.
836 */
837 sme_deauth(wpa_s);
838}
839
840
da1fb17c
JM		 841void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s,
842 union wpa_event_data *data)
843{
f049052b 844 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out");
0fb337c1 845 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1193dc8f 846 wpa_supplicant_mark_disassoc(wpa_s);
da1fb17c
JM		 847}
848
849
850void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s,
851 union wpa_event_data *data)
852{
f049052b 853 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out");
0fb337c1 854 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
da1fb17c 855 wpa_supplicant_mark_disassoc(wpa_s);
da1fb17c 856}
a84ed99e
JM		 857
858
859void sme_event_disassoc(struct wpa_supplicant *wpa_s,
d7df0fa7 860 struct disassoc_info *info)
a84ed99e 861{
f049052b 862 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received");
17fbb751 863 if (wpa_s->sme.prev_bssid_set) {
a84ed99e
JM		 864 /*
865 * cfg80211/mac80211 can get into somewhat confused state if
866 * the AP only disassociates us and leaves us in authenticated
867 * state. For now, force the state to be cleared to avoid
868 * confusing errors if we try to associate with the AP again.
869 */
f049052b
BG		 870 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear "
871 "driver state");
7e26053a 872 wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid,
a84ed99e
JM		 873 WLAN_REASON_DEAUTH_LEAVING);
874 }
875}
7d878ca7
JM		 876
877
e29853bb
BG		 878static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx)
879{
880 struct wpa_supplicant *wpa_s = eloop_ctx;
881 if (wpa_s->wpa_state == WPA_AUTHENTICATING) {
882 wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout");
883 sme_deauth(wpa_s);
884 }
885}
886
887
888static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx)
889{
890 struct wpa_supplicant *wpa_s = eloop_ctx;
891 if (wpa_s->wpa_state == WPA_ASSOCIATING) {
892 wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout");
893 sme_deauth(wpa_s);
894 }
895}
896
897
898void sme_state_changed(struct wpa_supplicant *wpa_s)
899{
900 /* Make sure timers are cleaned up appropriately. */
901 if (wpa_s->wpa_state != WPA_ASSOCIATING)
902 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
903 if (wpa_s->wpa_state != WPA_AUTHENTICATING)
904 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
905}
906
907
908void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s,
909 const u8 *prev_pending_bssid)
910{
911 /*
912 * mac80211-workaround to force deauth on failed auth cmd,
913 * requires us to remain in authenticating state to allow the
914 * second authentication attempt to be continued properly.
915 */
916 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication "
917 "to proceed after disconnection event");
918 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
919 os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
920
921 /*
922 * Re-arm authentication timer in case auth fails for whatever reason.
923 */
924 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
925 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
926 NULL);
927}
928
929
930void sme_deinit(struct wpa_supplicant *wpa_s)
931{
932 os_free(wpa_s->sme.ft_ies);
933 wpa_s->sme.ft_ies = NULL;
934 wpa_s->sme.ft_ies_len = 0;
935#ifdef CONFIG_IEEE80211W
936 sme_stop_sa_query(wpa_s);
937#endif /* CONFIG_IEEE80211W */
d136c376
JM		 938#ifdef CONFIG_SAE
939 wpabuf_free(wpa_s->sme.sae_token);
940 wpa_s->sme.sae_token = NULL;
a46d72d7 941 sae_clear_data(&wpa_s->sme.sae);
d136c376 942#endif /* CONFIG_SAE */
e29853bb
BG		 943
944 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
945 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
c3701c66
RM		 946 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
947}
948
949
950static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s,
951 const u8 *chan_list, u8 num_channels,
952 u8 num_intol)
953{
954 struct ieee80211_2040_bss_coex_ie *bc_ie;
955 struct ieee80211_2040_intol_chan_report *ic_report;
956 struct wpabuf *buf;
957
958 wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR,
959 MAC2STR(wpa_s->bssid));
960
961 buf = wpabuf_alloc(2 + /* action.category + action_code */
962 sizeof(struct ieee80211_2040_bss_coex_ie) +
963 sizeof(struct ieee80211_2040_intol_chan_report) +
964 num_channels);
965 if (buf == NULL)
966 return;
967
968 wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC);
969 wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX);
970
971 bc_ie = wpabuf_put(buf, sizeof(*bc_ie));
972 bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE;
973 bc_ie->length = 1;
974 if (num_intol)
975 bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ;
976
977 if (num_channels > 0) {
978 ic_report = wpabuf_put(buf, sizeof(*ic_report));
979 ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT;
980 ic_report->length = num_channels + 1;
981 ic_report->op_class = 0;
982 os_memcpy(wpabuf_put(buf, num_channels), chan_list,
983 num_channels);
984 }
985
986 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
987 wpa_s->own_addr, wpa_s->bssid,
988 wpabuf_head(buf), wpabuf_len(buf), 0) < 0) {
989 wpa_msg(wpa_s, MSG_INFO,
990 "SME: Failed to send 20/40 BSS Coexistence frame");
991 }
992
993 wpabuf_free(buf);
994}
995
996
c3701c66
RM		 997int sme_proc_obss_scan(struct wpa_supplicant *wpa_s)
998{
999 struct wpa_bss *bss;
1000 const u8 *ie;
1001 u16 ht_cap;
1002 u8 chan_list[P2P_MAX_CHANNELS], channel;
1003 u8 num_channels = 0, num_intol = 0, i;
1004
1005 if (!wpa_s->sme.sched_obss_scan)
1006 return 0;
1007
1008 wpa_s->sme.sched_obss_scan = 0;
1009 if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED)
1010 return 1;
1011
1012 /*
1013 * Check whether AP uses regulatory triplet or channel triplet in
1014 * country info. Right now the operating class of the BSS channel
1015 * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12),
1016 * based on the assumption that operating class triplet is not used in
1017 * beacon frame. If the First Channel Number/Operating Extension
1018 * Identifier octet has a positive integer value of 201 or greater,
1019 * then its operating class triplet.
1020 *
1021 * TODO: If Supported Operating Classes element is present in beacon
1022 * frame, have to lookup operating class in Annex E and fill them in
1023 * 2040 coex frame.
1024 */
1025 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY);
1026 if (ie && (ie[1] >= 6) && (ie[5] >= 201))
1027 return 1;
1028
1029 os_memset(chan_list, 0, sizeof(chan_list));
1030
1031 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1032 /* Skip other band bss */
e864c0ae
JM		 1033 enum hostapd_hw_mode mode;
1034 mode = ieee80211_freq_to_chan(bss->freq, &channel);
1035 if (mode != HOSTAPD_MODE_IEEE80211G &&
1036 mode != HOSTAPD_MODE_IEEE80211B)
c3701c66
RM		 1037 continue;
1038
1039 ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP);
1040 ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0;
1041
1042 if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) {
1043 /* Check whether the channel is already considered */
1044 for (i = 0; i < num_channels; i++) {
1045 if (channel == chan_list[i])
1046 break;
1047 }
1048 if (i != num_channels)
1049 continue;
1050
1051 if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)
1052 num_intol++;
1053
1054 chan_list[num_channels++] = channel;
1055 }
1056 }
1057
1058 sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol);
1059 return 1;
1060}
1061
1062
6434ad09
JM		 1063static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
1064 u16 num_modes,
1065 enum hostapd_hw_mode mode)
1066{
1067 u16 i;
1068
1069 for (i = 0; i < num_modes; i++) {
1070 if (modes[i].mode == mode)
1071 return &modes[i];
1072 }
1073
1074 return NULL;
1075}
1076
1077
1078static void wpa_setband_scan_freqs_list(struct wpa_supplicant *wpa_s,
1079 enum hostapd_hw_mode band,
1080 struct wpa_driver_scan_params *params)
1081{
1082 /* Include only supported channels for the specified band */
1083 struct hostapd_hw_modes *mode;
1084 int count, i;
1085
1086 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, band);
1087 if (mode == NULL) {
1088 /* No channels supported in this band - use empty list */
1089 params->freqs = os_zalloc(sizeof(int));
1090 return;
1091 }
1092
f9884c09 1093 params->freqs = os_calloc(mode->num_channels + 1, sizeof(int));
6434ad09
JM		 1094 if (params->freqs == NULL)
1095 return;
1096 for (count = 0, i = 0; i < mode->num_channels; i++) {
1097 if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED)
1098 continue;
1099 params->freqs[count++] = mode->channels[i].freq;
1100 }
1101}
1102
1103
c3701c66
RM		 1104static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1105{
1106 struct wpa_supplicant *wpa_s = eloop_ctx;
1107 struct wpa_driver_scan_params params;
1108
1109 if (!wpa_s->current_bss) {
1110 wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request");
1111 return;
1112 }
1113
1114 os_memset(&params, 0, sizeof(params));
6434ad09 1115 wpa_setband_scan_freqs_list(wpa_s, HOSTAPD_MODE_IEEE80211G, &params);
c3701c66
RM		 1116 wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan");
1117
1118 if (wpa_supplicant_trigger_scan(wpa_s, &params))
1119 wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan");
1120 else
1121 wpa_s->sme.sched_obss_scan = 1;
6434ad09 1122 os_free(params.freqs);
c3701c66
RM		 1123
1124 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
1125 sme_obss_scan_timeout, wpa_s, NULL);
1126}
1127
1128
1129void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable)
1130{
1131 const u8 *ie;
1132 struct wpa_bss *bss = wpa_s->current_bss;
1133 struct wpa_ssid *ssid = wpa_s->current_ssid;
b6871ebb
AN		 1134 struct hostapd_hw_modes *hw_mode = NULL;
1135 int i;
c3701c66
RM		 1136
1137 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
1138 wpa_s->sme.sched_obss_scan = 0;
1139 if (!enable)
1140 return;
1141
368b1957
AK		 1142 /*
1143 * Schedule OBSS scan if driver is using station SME in wpa_supplicant
1144 * or it expects OBSS scan to be performed by wpa_supplicant.
1145 */
1146 if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) ||
1147 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) ||
1148 ssid == NULL || ssid->mode != IEEE80211_MODE_INFRA)
1149 return;
c3701c66 1150
b6871ebb
AN		 1151 if (!wpa_s->hw.modes)
1152 return;
1153
1154 /* only HT caps in 11g mode are relevant */
1155 for (i = 0; i < wpa_s->hw.num_modes; i++) {
1156 hw_mode = &wpa_s->hw.modes[i];
1157 if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G)
1158 break;
1159 }
1160
1161 /* Driver does not support HT40 for 11g or doesn't have 11g. */
1162 if (i == wpa_s->hw.num_modes || !hw_mode ||
1163 !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1164 return;
c3701c66
RM		 1165
1166 if (bss == NULL || bss->freq < 2400 || bss->freq > 2500)
1167 return; /* Not associated on 2.4 GHz band */
1168
1169 /* Check whether AP supports HT40 */
1170 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP);
1171 if (!ie || ie[1] < 2 ||
1172 !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1173 return; /* AP does not support HT40 */
1174
1175 ie = wpa_bss_get_ie(wpa_s->current_bss,
1176 WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS);
1177 if (!ie || ie[1] < 14)
1178 return; /* AP does not request OBSS scans */
1179
1180 wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6);
1181 if (wpa_s->sme.obss_scan_int < 10) {
1182 wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u "
1183 "replaced with the minimum 10 sec",
1184 wpa_s->sme.obss_scan_int);
1185 wpa_s->sme.obss_scan_int = 10;
1186 }
1187 wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec",
1188 wpa_s->sme.obss_scan_int);
1189 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
1190 sme_obss_scan_timeout, wpa_s, NULL);
e29853bb
BG		 1191}
1192
1193
7d878ca7
JM		 1194#ifdef CONFIG_IEEE80211W
1195
1196static const unsigned int sa_query_max_timeout = 1000;
1197static const unsigned int sa_query_retry_timeout = 201;
1198
1199static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s)
1200{
1201 u32 tu;
46b8d4c0
JB		 1202 struct os_reltime now, passed;
1203 os_get_reltime(&now);
1204 os_reltime_sub(&now, &wpa_s->sme.sa_query_start, &passed);
7d878ca7
JM		 1205 tu = (passed.sec * 1000000 + passed.usec) / 1024;
1206 if (sa_query_max_timeout < tu) {
f049052b 1207 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out");
7d878ca7
JM		 1208 sme_stop_sa_query(wpa_s);
1209 wpa_supplicant_deauthenticate(
1210 wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID);
1211 return 1;
1212 }
1213
1214 return 0;
1215}
1216
1217
1218static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s,
1219 const u8 *trans_id)
1220{
1221 u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN];
f049052b
BG		 1222 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to "
1223 MACSTR, MAC2STR(wpa_s->bssid));
7d878ca7
JM		 1224 wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID",
1225 trans_id, WLAN_SA_QUERY_TR_ID_LEN);
1226 req[0] = WLAN_ACTION_SA_QUERY;
1227 req[1] = WLAN_SA_QUERY_REQUEST;
1228 os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN);
190b9062 1229 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
7d878ca7 1230 wpa_s->own_addr, wpa_s->bssid,
b106173a 1231 req, sizeof(req), 0) < 0)
f049052b
BG		 1232 wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query "
1233 "Request");
7d878ca7
JM		 1234}
1235
1236
1237static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
1238{
1239 struct wpa_supplicant *wpa_s = eloop_ctx;
1240 unsigned int timeout, sec, usec;
1241 u8 *trans_id, *nbuf;
1242
1243 if (wpa_s->sme.sa_query_count > 0 &&
1244 sme_check_sa_query_timeout(wpa_s))
1245 return;
1246
067ffa26
JM		 1247 nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id,
1248 wpa_s->sme.sa_query_count + 1,
1249 WLAN_SA_QUERY_TR_ID_LEN);
7d878ca7
JM		 1250 if (nbuf == NULL)
1251 return;
1252 if (wpa_s->sme.sa_query_count == 0) {
1253 /* Starting a new SA Query procedure */
46b8d4c0 1254 os_get_reltime(&wpa_s->sme.sa_query_start);
7d878ca7
JM		 1255 }
1256 trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
1257 wpa_s->sme.sa_query_trans_id = nbuf;
1258 wpa_s->sme.sa_query_count++;
1259
1260 os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN);
1261
1262 timeout = sa_query_retry_timeout;
1263 sec = ((timeout / 1000) * 1024) / 1000;
1264 usec = (timeout % 1000) * 1024;
1265 eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL);
1266
f049052b
BG		 1267 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d",
1268 wpa_s->sme.sa_query_count);
7d878ca7
JM		 1269
1270 sme_send_sa_query_req(wpa_s, trans_id);
1271}
1272
1273
1274static void sme_start_sa_query(struct wpa_supplicant *wpa_s)
1275{
1276 sme_sa_query_timer(wpa_s, NULL);
1277}
1278
1279
19df9b07 1280static void sme_stop_sa_query(struct wpa_supplicant *wpa_s)
7d878ca7
JM		 1281{
1282 eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL);
1283 os_free(wpa_s->sme.sa_query_trans_id);
1284 wpa_s->sme.sa_query_trans_id = NULL;
1285 wpa_s->sme.sa_query_count = 0;
1286}
1287
1288
1289void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa,
1290 const u8 *da, u16 reason_code)
1291{
1292 struct wpa_ssid *ssid;
1293
7d878ca7
JM		 1294 if (wpa_s->wpa_state != WPA_COMPLETED)
1295 return;
1296 ssid = wpa_s->current_ssid;
62d49803
JM		 1297 if (ssid == NULL ||
1298 (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
1299 wpa_s->conf->pmf : ssid->ieee80211w) == NO_MGMT_FRAME_PROTECTION)
7d878ca7
JM		 1300 return;
1301 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
1302 return;
1303 if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA &&
1304 reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA)
1305 return;
1306 if (wpa_s->sme.sa_query_count > 0)
1307 return;
1308
f049052b
BG		 1309 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - "
1310 "possible AP/STA state mismatch - trigger SA Query");
7d878ca7
JM		 1311 sme_start_sa_query(wpa_s);
1312}
1313
1314
1315void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa,
1316 const u8 *data, size_t len)
1317{
1318 int i;
1319
1320 if (wpa_s->sme.sa_query_trans_id == NULL ||
1321 len < 1 + WLAN_SA_QUERY_TR_ID_LEN ||
1322 data[0] != WLAN_SA_QUERY_RESPONSE)
1323 return;
f049052b
BG		 1324 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from "
1325 MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
7d878ca7
JM		 1326
1327 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
1328 return;
1329
1330 for (i = 0; i < wpa_s->sme.sa_query_count; i++) {
1331 if (os_memcmp(wpa_s->sme.sa_query_trans_id +
1332 i * WLAN_SA_QUERY_TR_ID_LEN,
1333 data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0)
1334 break;
1335 }
1336
1337 if (i >= wpa_s->sme.sa_query_count) {
f049052b
BG		 1338 wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query "
1339 "transaction identifier found");
7d878ca7
JM		 1340 return;
1341 }
1342
f049052b
BG		 1343 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received "
1344 "from " MACSTR, MAC2STR(sa));
7d878ca7
JM		 1345 sme_stop_sa_query(wpa_s);
1346}
1347
1348#endif /* CONFIG_IEEE80211W */
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