]> git.ipfire.org Git - thirdparty/hostap.git/blame - wpa_supplicant/sme.c
projects / thirdparty / hostap.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
EAP server: Remove SIM-DB pending timestamp
[thirdparty/hostap.git] / wpa_supplicant / sme.c
CommitLineData
c2a04078
JM		 1/*
2 * wpa_supplicant - SME
8e31e955 3 * Copyright (c) 2009-2012, 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");
c2a04078
JM		 160 return;
161 }
162
8f770587
JM		 163 wpa_s->current_bss = bss;
164
c2a04078
JM		 165 os_memset(&params, 0, sizeof(params));
166 wpa_s->reassociate = 0;
167
168 params.freq = bss->freq;
169 params.bssid = bss->bssid;
6fa81a3b
JM		 170 params.ssid = bss->ssid;
171 params.ssid_len = bss->ssid_len;
2f4f73b1 172 params.p2p = ssid->p2p_group;
c2a04078 173
62fa124c
JM		 174 if (wpa_s->sme.ssid_len != params.ssid_len ||
175 os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0)
176 wpa_s->sme.prev_bssid_set = 0;
177
c2a04078
JM		 178 wpa_s->sme.freq = params.freq;
179 os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len);
180 wpa_s->sme.ssid_len = params.ssid_len;
181
abd9fafa 182 params.auth_alg = WPA_AUTH_ALG_OPEN;
c2a04078
JM		 183#ifdef IEEE8021X_EAPOL
184 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
185 if (ssid->leap) {
186 if (ssid->non_leap == 0)
abd9fafa 187 params.auth_alg = WPA_AUTH_ALG_LEAP;
c2a04078 188 else
abd9fafa 189 params.auth_alg |= WPA_AUTH_ALG_LEAP;
c2a04078
JM		 190 }
191 }
192#endif /* IEEE8021X_EAPOL */
f049052b
BG		 193 wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x",
194 params.auth_alg);
c2a04078 195 if (ssid->auth_alg) {
abd9fafa 196 params.auth_alg = ssid->auth_alg;
f049052b
BG		 197 wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: "
198 "0x%x", params.auth_alg);
c2a04078 199 }
c10347f2
JM		 200#ifdef CONFIG_SAE
201 if (wpa_key_mgmt_sae(ssid->key_mgmt)) {
202 const u8 *rsn;
203 struct wpa_ie_data ied;
204
205 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
206 if (rsn &&
207 wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0) {
208 if (wpa_key_mgmt_sae(ied.key_mgmt)) {
209 wpa_dbg(wpa_s, MSG_DEBUG, "Using SAE auth_alg");
210 params.auth_alg = WPA_AUTH_ALG_SAE;
211 }
212 }
213 }
214#endif /* CONFIG_SAE */
c2a04078 215
a0b2f99b
JM		 216 for (i = 0; i < NUM_WEP_KEYS; i++) {
217 if (ssid->wep_key_len[i])
218 params.wep_key[i] = ssid->wep_key[i];
219 params.wep_key_len[i] = ssid->wep_key_len[i];
220 }
221 params.wep_tx_keyidx = ssid->wep_tx_keyidx;
222
8bac466b 223 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
c2a04078
JM		 224 os_memset(wpa_s->bssid, 0, ETH_ALEN);
225 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
8bac466b
JM		 226 if (bssid_changed)
227 wpas_notify_bssid_changed(wpa_s);
c2a04078 228
f337f0e9
JM		 229 if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
230 wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
0bf927a0 231 wpa_key_mgmt_wpa(ssid->key_mgmt)) {
c2a04078 232 int try_opportunistic;
6e202021
JM		 233 try_opportunistic = (ssid->proactive_key_caching < 0 ?
234 wpa_s->conf->okc :
235 ssid->proactive_key_caching) &&
c2a04078
JM		 236 (ssid->proto & WPA_PROTO_RSN);
237 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
238 wpa_s->current_ssid,
239 try_opportunistic) == 0)
240 eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
241 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
242 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
243 wpa_s->sme.assoc_req_ie,
244 &wpa_s->sme.assoc_req_ie_len)) {
f049052b
BG		 245 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
246 "key management and encryption suites");
c2a04078
JM		 247 return;
248 }
a3f7e518
JM		 249 } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
250 wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) {
251 /*
252 * Both WPA and non-WPA IEEE 802.1X enabled in configuration -
253 * use non-WPA since the scan results did not indicate that the
254 * AP is using WPA or WPA2.
255 */
256 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
257 wpa_s->sme.assoc_req_ie_len = 0;
0bf927a0 258 } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
c2a04078
JM		 259 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
260 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
261 wpa_s->sme.assoc_req_ie,
262 &wpa_s->sme.assoc_req_ie_len)) {
f049052b
BG		 263 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
264 "key management and encryption suites (no "
265 "scan results)");
c2a04078
JM		 266 return;
267 }
268#ifdef CONFIG_WPS
269 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
270 struct wpabuf *wps_ie;
271 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
272 if (wps_ie && wpabuf_len(wps_ie) <=
273 sizeof(wpa_s->sme.assoc_req_ie)) {
274 wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie);
275 os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie),
276 wpa_s->sme.assoc_req_ie_len);
277 } else
278 wpa_s->sme.assoc_req_ie_len = 0;
279 wpabuf_free(wps_ie);
280 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
281#endif /* CONFIG_WPS */
282 } else {
283 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
284 wpa_s->sme.assoc_req_ie_len = 0;
285 }
286
287#ifdef CONFIG_IEEE80211R
6fa81a3b 288 ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
c2a04078
JM		 289 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
290 md = ie + 2;
e7846b68 291 wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
c2a04078
JM		 292 if (md) {
293 /* Prepare for the next transition */
76b7981d 294 wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
c2a04078
JM		 295 }
296
0bf927a0 297 if (md && wpa_key_mgmt_ft(ssid->key_mgmt)) {
c2a04078
JM		 298 if (wpa_s->sme.assoc_req_ie_len + 5 <
299 sizeof(wpa_s->sme.assoc_req_ie)) {
300 struct rsn_mdie *mdie;
301 u8 *pos = wpa_s->sme.assoc_req_ie +
302 wpa_s->sme.assoc_req_ie_len;
303 *pos++ = WLAN_EID_MOBILITY_DOMAIN;
304 *pos++ = sizeof(*mdie);
305 mdie = (struct rsn_mdie *) pos;
306 os_memcpy(mdie->mobility_domain, md,
307 MOBILITY_DOMAIN_ID_LEN);
f4ec630d 308 mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN];
c2a04078
JM		 309 wpa_s->sme.assoc_req_ie_len += 5;
310 }
311
312 if (wpa_s->sme.ft_used &&
0d7b4409
JM		 313 os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 &&
314 wpa_sm_has_ptk(wpa_s->wpa)) {
f049052b
BG		 315 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT "
316 "over-the-air");
abd9fafa 317 params.auth_alg = WPA_AUTH_ALG_FT;
c2a04078
JM		 318 params.ie = wpa_s->sme.ft_ies;
319 params.ie_len = wpa_s->sme.ft_ies_len;
320 }
321 }
322#endif /* CONFIG_IEEE80211R */
323
324#ifdef CONFIG_IEEE80211W
62d49803
JM		 325 wpa_s->sme.mfp = ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
326 wpa_s->conf->pmf : ssid->ieee80211w;
327 if (wpa_s->sme.mfp != NO_MGMT_FRAME_PROTECTION) {
6fa81a3b 328 const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
c2a04078
JM		 329 struct wpa_ie_data _ie;
330 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 &&
331 _ie.capabilities &
332 (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
f049052b
BG		 333 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports "
334 "MFP: require MFP");
c2a04078
JM		 335 wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED;
336 }
337 }
338#endif /* CONFIG_IEEE80211W */
339
5f3a6aa0
JM		 340#ifdef CONFIG_P2P
341 if (wpa_s->global->p2p) {
342 u8 *pos;
343 size_t len;
344 int res;
5f3a6aa0
JM		 345 pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
346 len = sizeof(wpa_s->sme.assoc_req_ie) -
347 wpa_s->sme.assoc_req_ie_len;
ffad8858
JM		 348 res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len,
349 ssid->p2p_group);
5f3a6aa0
JM		 350 if (res >= 0)
351 wpa_s->sme.assoc_req_ie_len += res;
352 }
353#endif /* CONFIG_P2P */
354
cb418324 355#ifdef CONFIG_HS20
55a2df43 356 if (is_hs20_network(wpa_s, ssid, bss)) {
cb418324
JM		 357 struct wpabuf *hs20;
358 hs20 = wpabuf_alloc(20);
359 if (hs20) {
360 wpas_hs20_add_indication(hs20);
361 os_memcpy(wpa_s->sme.assoc_req_ie +
362 wpa_s->sme.assoc_req_ie_len,
363 wpabuf_head(hs20), wpabuf_len(hs20));
364 wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20);
365 wpabuf_free(hs20);
366 }
367 }
368#endif /* CONFIG_HS20 */
369
03e47c9c
JM		 370 ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab);
371 if (ext_capab_len > 0) {
92cbcf91
JM		 372 u8 *pos = wpa_s->sme.assoc_req_ie;
373 if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN)
374 pos += 2 + pos[1];
03e47c9c 375 os_memmove(pos + ext_capab_len, pos,
92cbcf91
JM		 376 wpa_s->sme.assoc_req_ie_len -
377 (pos - wpa_s->sme.assoc_req_ie));
03e47c9c
JM		 378 wpa_s->sme.assoc_req_ie_len += ext_capab_len;
379 os_memcpy(pos, ext_capab, ext_capab_len);
92cbcf91 380 }
92cbcf91 381
c10347f2
JM		 382#ifdef CONFIG_SAE
383 if (params.auth_alg == WPA_AUTH_ALG_SAE) {
384 if (start)
8e31e955
JM		 385 resp = sme_auth_build_sae_commit(wpa_s, ssid,
386 bss->bssid);
c10347f2
JM		 387 else
388 resp = sme_auth_build_sae_confirm(wpa_s);
389 if (resp == NULL)
390 return;
391 params.sae_data = wpabuf_head(resp);
392 params.sae_data_len = wpabuf_len(resp);
dd43026a 393 wpa_s->sme.sae.state = start ? SAE_COMMITTED : SAE_CONFIRMED;
c10347f2
JM		 394 }
395#endif /* CONFIG_SAE */
396
a4cba8f1 397 wpa_supplicant_cancel_sched_scan(wpa_s);
c2a04078
JM		 398 wpa_supplicant_cancel_scan(wpa_s);
399
f049052b 400 wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR
c2a04078
JM		 401 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
402 wpa_ssid_txt(params.ssid, params.ssid_len), params.freq);
403
404 wpa_clear_keys(wpa_s, bss->bssid);
405 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
8bac466b 406 old_ssid = wpa_s->current_ssid;
c2a04078
JM		 407 wpa_s->current_ssid = ssid;
408 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
409 wpa_supplicant_initiate_eapol(wpa_s);
8bac466b
JM		 410 if (old_ssid != wpa_s->current_ssid)
411 wpas_notify_network_changed(wpa_s);
c2a04078 412
62c72d72 413 wpa_s->sme.auth_alg = params.auth_alg;
c2a04078 414 if (wpa_drv_authenticate(wpa_s, &params) < 0) {
f049052b 415 wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the "
c2a04078 416 "driver failed");
ed57c590 417 wpas_connection_failed(wpa_s, bss->bssid);
1193dc8f 418 wpa_supplicant_mark_disassoc(wpa_s);
c10347f2 419 wpabuf_free(resp);
c2a04078
JM		 420 return;
421 }
422
e29853bb
BG		 423 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
424 NULL);
c2a04078
JM		 425
426 /*
427 * Association will be started based on the authentication event from
428 * the driver.
429 */
c10347f2
JM		 430
431 wpabuf_free(resp);
432}
433
434
435void sme_authenticate(struct wpa_supplicant *wpa_s,
436 struct wpa_bss *bss, struct wpa_ssid *ssid)
437{
98efcc41 438#ifdef CONFIG_SAE
dd43026a 439 wpa_s->sme.sae.state = SAE_NOTHING;
98efcc41 440 wpa_s->sme.sae.send_confirm = 0;
18ca7332 441 wpa_s->sme.sae_group_index = 0;
98efcc41 442#endif /* CONFIG_SAE */
c10347f2 443 sme_send_authentication(wpa_s, bss, ssid, 1);
c2a04078
JM		 444}
445
446
c10347f2 447#ifdef CONFIG_SAE
21af6d15 448
c10347f2
JM		 449static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction,
450 u16 status_code, const u8 *data, size_t len)
451{
452 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u "
453 "status code %u", auth_transaction, status_code);
c10347f2 454
d136c376
JM		 455 if (auth_transaction == 1 &&
456 status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ &&
457 wpa_s->sme.sae.state == SAE_COMMITTED &&
458 wpa_s->current_bss && wpa_s->current_ssid) {
459 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE anti-clogging token "
460 "requested");
461 wpabuf_free(wpa_s->sme.sae_token);
462 wpa_s->sme.sae_token = wpabuf_alloc_copy(data, len);
463 sme_send_authentication(wpa_s, wpa_s->current_bss,
464 wpa_s->current_ssid, 1);
465 return 0;
466 }
467
625f202a
JM		 468 if (auth_transaction == 1 &&
469 status_code == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED &&
470 wpa_s->sme.sae.state == SAE_COMMITTED &&
471 wpa_s->current_bss && wpa_s->current_ssid) {
472 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE group not supported");
473 wpa_s->sme.sae_group_index++;
474 if (sme_set_sae_group(wpa_s) < 0)
475 return -1; /* no other groups enabled */
476 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Try next enabled SAE group");
477 sme_send_authentication(wpa_s, wpa_s->current_bss,
478 wpa_s->current_ssid, 1);
479 return 0;
480 }
481
c10347f2
JM		 482 if (status_code != WLAN_STATUS_SUCCESS)
483 return -1;
484
485 if (auth_transaction == 1) {
18ca7332
JM		 486 int *groups = wpa_s->conf->sae_groups;
487
c10347f2
JM		 488 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit");
489 if (wpa_s->current_bss == NULL ||
490 wpa_s->current_ssid == NULL)
491 return -1;
dd43026a 492 if (wpa_s->sme.sae.state != SAE_COMMITTED)
21af6d15 493 return -1;
18ca7332
JM		 494 if (groups && groups[0] <= 0)
495 groups = NULL;
625f202a 496 if (sae_parse_commit(&wpa_s->sme.sae, data, len, NULL, NULL,
18ca7332 497 groups) != WLAN_STATUS_SUCCESS)
21af6d15 498 return -1;
146f6c9a
JM		 499
500 if (sae_process_commit(&wpa_s->sme.sae) < 0) {
501 wpa_printf(MSG_DEBUG, "SAE: Failed to process peer "
502 "commit");
503 return -1;
504 }
505
d136c376
JM		 506 wpabuf_free(wpa_s->sme.sae_token);
507 wpa_s->sme.sae_token = NULL;
c10347f2
JM		 508 sme_send_authentication(wpa_s, wpa_s->current_bss,
509 wpa_s->current_ssid, 0);
510 return 0;
511 } else if (auth_transaction == 2) {
512 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm");
dd43026a 513 if (wpa_s->sme.sae.state != SAE_CONFIRMED)
21af6d15 514 return -1;
f2e9818f 515 if (sae_check_confirm(&wpa_s->sme.sae, data, len) < 0)
21af6d15 516 return -1;
dd43026a 517 wpa_s->sme.sae.state = SAE_ACCEPTED;
b4fd3613 518 sae_clear_temp_data(&wpa_s->sme.sae);
c10347f2
JM		 519 return 1;
520 }
521
522 return -1;
523}
524#endif /* CONFIG_SAE */
525
526
c2a04078
JM		 527void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
528{
c2a04078
JM		 529 struct wpa_ssid *ssid = wpa_s->current_ssid;
530
531 if (ssid == NULL) {
f049052b
BG		 532 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
533 "when network is not selected");
c2a04078
JM		 534 return;
535 }
536
537 if (wpa_s->wpa_state != WPA_AUTHENTICATING) {
f049052b
BG		 538 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
539 "when not in authenticating state");
c2a04078
JM		 540 return;
541 }
542
543 if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) {
f049052b
BG		 544 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with "
545 "unexpected peer " MACSTR,
546 MAC2STR(data->auth.peer));
c2a04078
JM		 547 return;
548 }
549
f049052b 550 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR
c10347f2 551 " auth_type=%d auth_transaction=%d status_code=%d",
f049052b 552 MAC2STR(data->auth.peer), data->auth.auth_type,
c10347f2 553 data->auth.auth_transaction, data->auth.status_code);
c2a04078
JM		 554 wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs",
555 data->auth.ies, data->auth.ies_len);
556
e29853bb
BG		 557 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
558
c10347f2
JM		 559#ifdef CONFIG_SAE
560 if (data->auth.auth_type == WLAN_AUTH_SAE) {
21af6d15
JM		 561 int res;
562 res = sme_sae_auth(wpa_s, data->auth.auth_transaction,
563 data->auth.status_code, data->auth.ies,
564 data->auth.ies_len);
565 if (res < 0) {
566 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
567 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
568
569 }
570 if (res != 1)
c10347f2 571 return;
47b55a3e
JM		 572
573 wpa_printf(MSG_DEBUG, "SME: SAE completed - setting PMK for "
574 "4-way handshake");
575 wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN);
c10347f2
JM		 576 }
577#endif /* CONFIG_SAE */
578
c2a04078 579 if (data->auth.status_code != WLAN_STATUS_SUCCESS) {
f049052b
BG		 580 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication failed (status "
581 "code %d)", data->auth.status_code);
cb1583f6
SO		 582
583 if (data->auth.status_code !=
584 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG ||
585 wpa_s->sme.auth_alg == data->auth.auth_type ||
7e6646c7 586 wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) {
0fb337c1 587 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
c1c02342 588 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
cb1583f6 589 return;
7e6646c7 590 }
cb1583f6
SO		 591
592 switch (data->auth.auth_type) {
593 case WLAN_AUTH_OPEN:
594 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED;
595
f049052b 596 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth");
cb1583f6
SO		 597 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
598 wpa_s->current_ssid);
599 return;
600
601 case WLAN_AUTH_SHARED_KEY:
602 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP;
603
f049052b 604 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth");
cb1583f6
SO		 605 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
606 wpa_s->current_ssid);
607 return;
608
609 default:
610 return;
611 }
c2a04078
JM		 612 }
613
614#ifdef CONFIG_IEEE80211R
615 if (data->auth.auth_type == WLAN_AUTH_FT) {
616 union wpa_event_data edata;
617 os_memset(&edata, 0, sizeof(edata));
618 edata.ft_ies.ies = data->auth.ies;
619 edata.ft_ies.ies_len = data->auth.ies_len;
620 os_memcpy(edata.ft_ies.target_ap, data->auth.peer, ETH_ALEN);
621 wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &edata);
622 }
623#endif /* CONFIG_IEEE80211R */
624
71024cb2
JM		 625 sme_associate(wpa_s, ssid->mode, data->auth.peer,
626 data->auth.auth_type);
627}
628
629
630void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
631 const u8 *bssid, u16 auth_type)
632{
633 struct wpa_driver_associate_params params;
d9a27b04 634 struct ieee802_11_elems elems;
80e8a5ee
BG		 635#ifdef CONFIG_HT_OVERRIDES
636 struct ieee80211_ht_capabilities htcaps;
637 struct ieee80211_ht_capabilities htcaps_mask;
638#endif /* CONFIG_HT_OVERRIDES */
e9ee8dc3
JB		 639#ifdef CONFIG_VHT_OVERRIDES
640 struct ieee80211_vht_capabilities vhtcaps;
641 struct ieee80211_vht_capabilities vhtcaps_mask;
642#endif /* CONFIG_VHT_OVERRIDES */
71024cb2 643
c2a04078 644 os_memset(&params, 0, sizeof(params));
71024cb2 645 params.bssid = bssid;
c2a04078
JM		 646 params.ssid = wpa_s->sme.ssid;
647 params.ssid_len = wpa_s->sme.ssid_len;
648 params.freq = wpa_s->sme.freq;
1f6c0ab8
BS		 649 params.bg_scan_period = wpa_s->current_ssid ?
650 wpa_s->current_ssid->bg_scan_period : -1;
c2a04078
JM		 651 params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
652 wpa_s->sme.assoc_req_ie : NULL;
653 params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
62769a88
JM		 654 params.pairwise_suite =
655 wpa_cipher_to_suite_driver(wpa_s->pairwise_cipher);
656 params.group_suite = wpa_cipher_to_suite_driver(wpa_s->group_cipher);
80e8a5ee
BG		 657#ifdef CONFIG_HT_OVERRIDES
658 os_memset(&htcaps, 0, sizeof(htcaps));
659 os_memset(&htcaps_mask, 0, sizeof(htcaps_mask));
660 params.htcaps = (u8 *) &htcaps;
661 params.htcaps_mask = (u8 *) &htcaps_mask;
662 wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, &params);
663#endif /* CONFIG_HT_OVERRIDES */
e9ee8dc3
JB		 664#ifdef CONFIG_VHT_OVERRIDES
665 os_memset(&vhtcaps, 0, sizeof(vhtcaps));
666 os_memset(&vhtcaps_mask, 0, sizeof(vhtcaps_mask));
667 params.vhtcaps = &vhtcaps;
668 params.vhtcaps_mask = &vhtcaps_mask;
669 wpa_supplicant_apply_vht_overrides(wpa_s, wpa_s->current_ssid, &params);
670#endif /* CONFIG_VHT_OVERRIDES */
c2a04078 671#ifdef CONFIG_IEEE80211R
71024cb2 672 if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
c2a04078
JM		 673 params.wpa_ie = wpa_s->sme.ft_ies;
674 params.wpa_ie_len = wpa_s->sme.ft_ies_len;
675 }
676#endif /* CONFIG_IEEE80211R */
71024cb2 677 params.mode = mode;
c2a04078 678 params.mgmt_frame_protection = wpa_s->sme.mfp;
62fa124c
JM		 679 if (wpa_s->sme.prev_bssid_set)
680 params.prev_bssid = wpa_s->sme.prev_bssid;
c2a04078
JM		 681
682 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
683 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
684 params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "",
685 params.freq);
686
687 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
688
9efc3f2a
JM		 689 if (params.wpa_ie == NULL ||
690 ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0)
d9a27b04 691 < 0) {
f049052b 692 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!");
d9a27b04
JM		 693 os_memset(&elems, 0, sizeof(elems));
694 }
64fa840a
JM		 695 if (elems.rsn_ie) {
696 params.wpa_proto = WPA_PROTO_RSN;
d9a27b04
JM		 697 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2,
698 elems.rsn_ie_len + 2);
64fa840a
JM		 699 } else if (elems.wpa_ie) {
700 params.wpa_proto = WPA_PROTO_WPA;
d9a27b04
JM		 701 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
702 elems.wpa_ie_len + 2);
64fa840a 703 } else
d9a27b04 704 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
ffad8858 705 if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group)
6e3f4b89 706 params.p2p = 1;
d9a27b04 707
eea2fd9e
JM		 708 if (wpa_s->parent->set_sta_uapsd)
709 params.uapsd = wpa_s->parent->sta_uapsd;
710 else
711 params.uapsd = -1;
712
c2a04078 713 if (wpa_drv_associate(wpa_s, &params) < 0) {
f049052b
BG		 714 wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the "
715 "driver failed");
e5ad96b7 716 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
c1c02342 717 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
e5ad96b7 718 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
c2a04078
JM		 719 return;
720 }
721
e29853bb
BG		 722 eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s,
723 NULL);
c2a04078
JM		 724}
725
726
727int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
728 const u8 *ies, size_t ies_len)
729{
730 if (md == NULL || ies == NULL) {
f049052b 731 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain");
c2a04078
JM		 732 os_free(wpa_s->sme.ft_ies);
733 wpa_s->sme.ft_ies = NULL;
734 wpa_s->sme.ft_ies_len = 0;
735 wpa_s->sme.ft_used = 0;
736 return 0;
737 }
738
739 os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN);
740 wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len);
741 os_free(wpa_s->sme.ft_ies);
742 wpa_s->sme.ft_ies = os_malloc(ies_len);
743 if (wpa_s->sme.ft_ies == NULL)
744 return -1;
745 os_memcpy(wpa_s->sme.ft_ies, ies, ies_len);
746 wpa_s->sme.ft_ies_len = ies_len;
747 return 0;
748}
efa46078
JM		 749
750
e29853bb 751static void sme_deauth(struct wpa_supplicant *wpa_s)
efa46078 752{
8bac466b
JM		 753 int bssid_changed;
754
8bac466b 755 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
76d11d3f 756
76d11d3f
JM		 757 if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
758 WLAN_REASON_DEAUTH_LEAVING) < 0) {
f049052b
BG		 759 wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver "
760 "failed");
76d11d3f 761 }
62fa124c 762 wpa_s->sme.prev_bssid_set = 0;
76d11d3f 763
0fb337c1 764 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
76d11d3f 765 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
efa46078
JM		 766 os_memset(wpa_s->bssid, 0, ETH_ALEN);
767 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
8bac466b
JM		 768 if (bssid_changed)
769 wpas_notify_bssid_changed(wpa_s);
efa46078 770}
da1fb17c
JM		 771
772
e29853bb
BG		 773void sme_event_assoc_reject(struct wpa_supplicant *wpa_s,
774 union wpa_event_data *data)
775{
776 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: "
777 "status code %d", MAC2STR(wpa_s->pending_bssid),
778 data->assoc_reject.status_code);
779
780 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
781
782 /*
783 * For now, unconditionally terminate the previous authentication. In
784 * theory, this should not be needed, but mac80211 gets quite confused
785 * if the authentication is left pending.. Some roaming cases might
786 * benefit from using the previous authentication, so this could be
787 * optimized in the future.
788 */
789 sme_deauth(wpa_s);
790}
791
792
da1fb17c
JM		 793void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s,
794 union wpa_event_data *data)
795{
f049052b 796 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out");
0fb337c1 797 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1193dc8f 798 wpa_supplicant_mark_disassoc(wpa_s);
da1fb17c
JM		 799}
800
801
802void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s,
803 union wpa_event_data *data)
804{
f049052b 805 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out");
0fb337c1 806 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
da1fb17c 807 wpa_supplicant_mark_disassoc(wpa_s);
da1fb17c 808}
a84ed99e
JM		 809
810
811void sme_event_disassoc(struct wpa_supplicant *wpa_s,
d7df0fa7 812 struct disassoc_info *info)
a84ed99e 813{
f049052b 814 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received");
17fbb751 815 if (wpa_s->sme.prev_bssid_set) {
a84ed99e
JM		 816 /*
817 * cfg80211/mac80211 can get into somewhat confused state if
818 * the AP only disassociates us and leaves us in authenticated
819 * state. For now, force the state to be cleared to avoid
820 * confusing errors if we try to associate with the AP again.
821 */
f049052b
BG		 822 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear "
823 "driver state");
7e26053a 824 wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid,
a84ed99e
JM		 825 WLAN_REASON_DEAUTH_LEAVING);
826 }
827}
7d878ca7
JM		 828
829
e29853bb
BG		 830static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx)
831{
832 struct wpa_supplicant *wpa_s = eloop_ctx;
833 if (wpa_s->wpa_state == WPA_AUTHENTICATING) {
834 wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout");
835 sme_deauth(wpa_s);
836 }
837}
838
839
840static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx)
841{
842 struct wpa_supplicant *wpa_s = eloop_ctx;
843 if (wpa_s->wpa_state == WPA_ASSOCIATING) {
844 wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout");
845 sme_deauth(wpa_s);
846 }
847}
848
849
850void sme_state_changed(struct wpa_supplicant *wpa_s)
851{
852 /* Make sure timers are cleaned up appropriately. */
853 if (wpa_s->wpa_state != WPA_ASSOCIATING)
854 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
855 if (wpa_s->wpa_state != WPA_AUTHENTICATING)
856 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
857}
858
859
860void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s,
861 const u8 *prev_pending_bssid)
862{
863 /*
864 * mac80211-workaround to force deauth on failed auth cmd,
865 * requires us to remain in authenticating state to allow the
866 * second authentication attempt to be continued properly.
867 */
868 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication "
869 "to proceed after disconnection event");
870 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
871 os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
872
873 /*
874 * Re-arm authentication timer in case auth fails for whatever reason.
875 */
876 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
877 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
878 NULL);
879}
880
881
882void sme_deinit(struct wpa_supplicant *wpa_s)
883{
884 os_free(wpa_s->sme.ft_ies);
885 wpa_s->sme.ft_ies = NULL;
886 wpa_s->sme.ft_ies_len = 0;
887#ifdef CONFIG_IEEE80211W
888 sme_stop_sa_query(wpa_s);
889#endif /* CONFIG_IEEE80211W */
d136c376
JM		 890#ifdef CONFIG_SAE
891 wpabuf_free(wpa_s->sme.sae_token);
892 wpa_s->sme.sae_token = NULL;
a46d72d7 893 sae_clear_data(&wpa_s->sme.sae);
d136c376 894#endif /* CONFIG_SAE */
e29853bb
BG		 895
896 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
897 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
c3701c66
RM		 898 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
899}
900
901
902static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s,
903 const u8 *chan_list, u8 num_channels,
904 u8 num_intol)
905{
906 struct ieee80211_2040_bss_coex_ie *bc_ie;
907 struct ieee80211_2040_intol_chan_report *ic_report;
908 struct wpabuf *buf;
909
910 wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR,
911 MAC2STR(wpa_s->bssid));
912
913 buf = wpabuf_alloc(2 + /* action.category + action_code */
914 sizeof(struct ieee80211_2040_bss_coex_ie) +
915 sizeof(struct ieee80211_2040_intol_chan_report) +
916 num_channels);
917 if (buf == NULL)
918 return;
919
920 wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC);
921 wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX);
922
923 bc_ie = wpabuf_put(buf, sizeof(*bc_ie));
924 bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE;
925 bc_ie->length = 1;
926 if (num_intol)
927 bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ;
928
929 if (num_channels > 0) {
930 ic_report = wpabuf_put(buf, sizeof(*ic_report));
931 ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT;
932 ic_report->length = num_channels + 1;
933 ic_report->op_class = 0;
934 os_memcpy(wpabuf_put(buf, num_channels), chan_list,
935 num_channels);
936 }
937
938 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
939 wpa_s->own_addr, wpa_s->bssid,
940 wpabuf_head(buf), wpabuf_len(buf), 0) < 0) {
941 wpa_msg(wpa_s, MSG_INFO,
942 "SME: Failed to send 20/40 BSS Coexistence frame");
943 }
944
945 wpabuf_free(buf);
946}
947
948
c3701c66
RM		 949int sme_proc_obss_scan(struct wpa_supplicant *wpa_s)
950{
951 struct wpa_bss *bss;
952 const u8 *ie;
953 u16 ht_cap;
954 u8 chan_list[P2P_MAX_CHANNELS], channel;
955 u8 num_channels = 0, num_intol = 0, i;
956
957 if (!wpa_s->sme.sched_obss_scan)
958 return 0;
959
960 wpa_s->sme.sched_obss_scan = 0;
961 if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED)
962 return 1;
963
964 /*
965 * Check whether AP uses regulatory triplet or channel triplet in
966 * country info. Right now the operating class of the BSS channel
967 * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12),
968 * based on the assumption that operating class triplet is not used in
969 * beacon frame. If the First Channel Number/Operating Extension
970 * Identifier octet has a positive integer value of 201 or greater,
971 * then its operating class triplet.
972 *
973 * TODO: If Supported Operating Classes element is present in beacon
974 * frame, have to lookup operating class in Annex E and fill them in
975 * 2040 coex frame.
976 */
977 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY);
978 if (ie && (ie[1] >= 6) && (ie[5] >= 201))
979 return 1;
980
981 os_memset(chan_list, 0, sizeof(chan_list));
982
983 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
984 /* Skip other band bss */
e864c0ae
JM		 985 enum hostapd_hw_mode mode;
986 mode = ieee80211_freq_to_chan(bss->freq, &channel);
987 if (mode != HOSTAPD_MODE_IEEE80211G &&
988 mode != HOSTAPD_MODE_IEEE80211B)
c3701c66
RM		 989 continue;
990
991 ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP);
992 ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0;
993
994 if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) {
995 /* Check whether the channel is already considered */
996 for (i = 0; i < num_channels; i++) {
997 if (channel == chan_list[i])
998 break;
999 }
1000 if (i != num_channels)
1001 continue;
1002
1003 if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)
1004 num_intol++;
1005
1006 chan_list[num_channels++] = channel;
1007 }
1008 }
1009
1010 sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol);
1011 return 1;
1012}
1013
1014
6434ad09
JM		 1015static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
1016 u16 num_modes,
1017 enum hostapd_hw_mode mode)
1018{
1019 u16 i;
1020
1021 for (i = 0; i < num_modes; i++) {
1022 if (modes[i].mode == mode)
1023 return &modes[i];
1024 }
1025
1026 return NULL;
1027}
1028
1029
1030static void wpa_setband_scan_freqs_list(struct wpa_supplicant *wpa_s,
1031 enum hostapd_hw_mode band,
1032 struct wpa_driver_scan_params *params)
1033{
1034 /* Include only supported channels for the specified band */
1035 struct hostapd_hw_modes *mode;
1036 int count, i;
1037
1038 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, band);
1039 if (mode == NULL) {
1040 /* No channels supported in this band - use empty list */
1041 params->freqs = os_zalloc(sizeof(int));
1042 return;
1043 }
1044
f9884c09 1045 params->freqs = os_calloc(mode->num_channels + 1, sizeof(int));
6434ad09
JM		 1046 if (params->freqs == NULL)
1047 return;
1048 for (count = 0, i = 0; i < mode->num_channels; i++) {
1049 if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED)
1050 continue;
1051 params->freqs[count++] = mode->channels[i].freq;
1052 }
1053}
1054
1055
c3701c66
RM		 1056static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1057{
1058 struct wpa_supplicant *wpa_s = eloop_ctx;
1059 struct wpa_driver_scan_params params;
1060
1061 if (!wpa_s->current_bss) {
1062 wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request");
1063 return;
1064 }
1065
1066 os_memset(&params, 0, sizeof(params));
6434ad09 1067 wpa_setband_scan_freqs_list(wpa_s, HOSTAPD_MODE_IEEE80211G, &params);
c3701c66
RM		 1068 wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan");
1069
1070 if (wpa_supplicant_trigger_scan(wpa_s, &params))
1071 wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan");
1072 else
1073 wpa_s->sme.sched_obss_scan = 1;
6434ad09 1074 os_free(params.freqs);
c3701c66
RM		 1075
1076 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
1077 sme_obss_scan_timeout, wpa_s, NULL);
1078}
1079
1080
1081void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable)
1082{
1083 const u8 *ie;
1084 struct wpa_bss *bss = wpa_s->current_bss;
1085 struct wpa_ssid *ssid = wpa_s->current_ssid;
b6871ebb
AN		 1086 struct hostapd_hw_modes *hw_mode = NULL;
1087 int i;
c3701c66
RM		 1088
1089 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
1090 wpa_s->sme.sched_obss_scan = 0;
1091 if (!enable)
1092 return;
1093
368b1957
AK		 1094 /*
1095 * Schedule OBSS scan if driver is using station SME in wpa_supplicant
1096 * or it expects OBSS scan to be performed by wpa_supplicant.
1097 */
1098 if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) ||
1099 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) ||
1100 ssid == NULL || ssid->mode != IEEE80211_MODE_INFRA)
1101 return;
c3701c66 1102
b6871ebb
AN		 1103 if (!wpa_s->hw.modes)
1104 return;
1105
1106 /* only HT caps in 11g mode are relevant */
1107 for (i = 0; i < wpa_s->hw.num_modes; i++) {
1108 hw_mode = &wpa_s->hw.modes[i];
1109 if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G)
1110 break;
1111 }
1112
1113 /* Driver does not support HT40 for 11g or doesn't have 11g. */
1114 if (i == wpa_s->hw.num_modes || !hw_mode ||
1115 !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1116 return;
c3701c66
RM		 1117
1118 if (bss == NULL || bss->freq < 2400 || bss->freq > 2500)
1119 return; /* Not associated on 2.4 GHz band */
1120
1121 /* Check whether AP supports HT40 */
1122 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP);
1123 if (!ie || ie[1] < 2 ||
1124 !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1125 return; /* AP does not support HT40 */
1126
1127 ie = wpa_bss_get_ie(wpa_s->current_bss,
1128 WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS);
1129 if (!ie || ie[1] < 14)
1130 return; /* AP does not request OBSS scans */
1131
1132 wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6);
1133 if (wpa_s->sme.obss_scan_int < 10) {
1134 wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u "
1135 "replaced with the minimum 10 sec",
1136 wpa_s->sme.obss_scan_int);
1137 wpa_s->sme.obss_scan_int = 10;
1138 }
1139 wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec",
1140 wpa_s->sme.obss_scan_int);
1141 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
1142 sme_obss_scan_timeout, wpa_s, NULL);
e29853bb
BG		 1143}
1144
1145
7d878ca7
JM		 1146#ifdef CONFIG_IEEE80211W
1147
1148static const unsigned int sa_query_max_timeout = 1000;
1149static const unsigned int sa_query_retry_timeout = 201;
1150
1151static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s)
1152{
1153 u32 tu;
1154 struct os_time now, passed;
1155 os_get_time(&now);
1156 os_time_sub(&now, &wpa_s->sme.sa_query_start, &passed);
1157 tu = (passed.sec * 1000000 + passed.usec) / 1024;
1158 if (sa_query_max_timeout < tu) {
f049052b 1159 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out");
7d878ca7
JM		 1160 sme_stop_sa_query(wpa_s);
1161 wpa_supplicant_deauthenticate(
1162 wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID);
1163 return 1;
1164 }
1165
1166 return 0;
1167}
1168
1169
1170static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s,
1171 const u8 *trans_id)
1172{
1173 u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN];
f049052b
BG		 1174 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to "
1175 MACSTR, MAC2STR(wpa_s->bssid));
7d878ca7
JM		 1176 wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID",
1177 trans_id, WLAN_SA_QUERY_TR_ID_LEN);
1178 req[0] = WLAN_ACTION_SA_QUERY;
1179 req[1] = WLAN_SA_QUERY_REQUEST;
1180 os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN);
190b9062 1181 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
7d878ca7 1182 wpa_s->own_addr, wpa_s->bssid,
b106173a 1183 req, sizeof(req), 0) < 0)
f049052b
BG		 1184 wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query "
1185 "Request");
7d878ca7
JM		 1186}
1187
1188
1189static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
1190{
1191 struct wpa_supplicant *wpa_s = eloop_ctx;
1192 unsigned int timeout, sec, usec;
1193 u8 *trans_id, *nbuf;
1194
1195 if (wpa_s->sme.sa_query_count > 0 &&
1196 sme_check_sa_query_timeout(wpa_s))
1197 return;
1198
067ffa26
JM		 1199 nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id,
1200 wpa_s->sme.sa_query_count + 1,
1201 WLAN_SA_QUERY_TR_ID_LEN);
7d878ca7
JM		 1202 if (nbuf == NULL)
1203 return;
1204 if (wpa_s->sme.sa_query_count == 0) {
1205 /* Starting a new SA Query procedure */
1206 os_get_time(&wpa_s->sme.sa_query_start);
1207 }
1208 trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
1209 wpa_s->sme.sa_query_trans_id = nbuf;
1210 wpa_s->sme.sa_query_count++;
1211
1212 os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN);
1213
1214 timeout = sa_query_retry_timeout;
1215 sec = ((timeout / 1000) * 1024) / 1000;
1216 usec = (timeout % 1000) * 1024;
1217 eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL);
1218
f049052b
BG		 1219 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d",
1220 wpa_s->sme.sa_query_count);
7d878ca7
JM		 1221
1222 sme_send_sa_query_req(wpa_s, trans_id);
1223}
1224
1225
1226static void sme_start_sa_query(struct wpa_supplicant *wpa_s)
1227{
1228 sme_sa_query_timer(wpa_s, NULL);
1229}
1230
1231
19df9b07 1232static void sme_stop_sa_query(struct wpa_supplicant *wpa_s)
7d878ca7
JM		 1233{
1234 eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL);
1235 os_free(wpa_s->sme.sa_query_trans_id);
1236 wpa_s->sme.sa_query_trans_id = NULL;
1237 wpa_s->sme.sa_query_count = 0;
1238}
1239
1240
1241void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa,
1242 const u8 *da, u16 reason_code)
1243{
1244 struct wpa_ssid *ssid;
1245
7d878ca7
JM		 1246 if (wpa_s->wpa_state != WPA_COMPLETED)
1247 return;
1248 ssid = wpa_s->current_ssid;
62d49803
JM		 1249 if (ssid == NULL ||
1250 (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
1251 wpa_s->conf->pmf : ssid->ieee80211w) == NO_MGMT_FRAME_PROTECTION)
7d878ca7
JM		 1252 return;
1253 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
1254 return;
1255 if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA &&
1256 reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA)
1257 return;
1258 if (wpa_s->sme.sa_query_count > 0)
1259 return;
1260
f049052b
BG		 1261 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - "
1262 "possible AP/STA state mismatch - trigger SA Query");
7d878ca7
JM		 1263 sme_start_sa_query(wpa_s);
1264}
1265
1266
1267void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa,
1268 const u8 *data, size_t len)
1269{
1270 int i;
1271
1272 if (wpa_s->sme.sa_query_trans_id == NULL ||
1273 len < 1 + WLAN_SA_QUERY_TR_ID_LEN ||
1274 data[0] != WLAN_SA_QUERY_RESPONSE)
1275 return;
f049052b
BG		 1276 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from "
1277 MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
7d878ca7
JM		 1278
1279 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
1280 return;
1281
1282 for (i = 0; i < wpa_s->sme.sa_query_count; i++) {
1283 if (os_memcmp(wpa_s->sme.sa_query_trans_id +
1284 i * WLAN_SA_QUERY_TR_ID_LEN,
1285 data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0)
1286 break;
1287 }
1288
1289 if (i >= wpa_s->sme.sa_query_count) {
f049052b
BG		 1290 wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query "
1291 "transaction identifier found");
7d878ca7
JM		 1292 return;
1293 }
1294
f049052b
BG		 1295 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received "
1296 "from " MACSTR, MAC2STR(sa));
7d878ca7
JM		 1297 sme_stop_sa_query(wpa_s);
1298}
1299
1300#endif /* CONFIG_IEEE80211W */
Unnamed repository; edit this file 'description' to name the repository.