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tests: Add a test case for IBSS RSN
[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++) {
49 if (array[i] == -1)
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;
59 int default_groups[] = { 19, 20, 21, 25, 26 };
60
61 if (!groups)
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
JM		 440 wpa_s->sme.sae.send_confirm = 0;
441#endif /* CONFIG_SAE */
c10347f2 442 sme_send_authentication(wpa_s, bss, ssid, 1);
c2a04078
JM		 443}
444
445
c10347f2 446#ifdef CONFIG_SAE
21af6d15 447
c10347f2
JM		 448static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction,
449 u16 status_code, const u8 *data, size_t len)
450{
451 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u "
452 "status code %u", auth_transaction, status_code);
c10347f2 453
d136c376
JM		 454 if (auth_transaction == 1 &&
455 status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ &&
456 wpa_s->sme.sae.state == SAE_COMMITTED &&
457 wpa_s->current_bss && wpa_s->current_ssid) {
458 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE anti-clogging token "
459 "requested");
460 wpabuf_free(wpa_s->sme.sae_token);
461 wpa_s->sme.sae_token = wpabuf_alloc_copy(data, len);
462 sme_send_authentication(wpa_s, wpa_s->current_bss,
463 wpa_s->current_ssid, 1);
464 return 0;
465 }
466
625f202a
JM		 467 if (auth_transaction == 1 &&
468 status_code == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED &&
469 wpa_s->sme.sae.state == SAE_COMMITTED &&
470 wpa_s->current_bss && wpa_s->current_ssid) {
471 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE group not supported");
472 wpa_s->sme.sae_group_index++;
473 if (sme_set_sae_group(wpa_s) < 0)
474 return -1; /* no other groups enabled */
475 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Try next enabled SAE group");
476 sme_send_authentication(wpa_s, wpa_s->current_bss,
477 wpa_s->current_ssid, 1);
478 return 0;
479 }
480
c10347f2
JM		 481 if (status_code != WLAN_STATUS_SUCCESS)
482 return -1;
483
484 if (auth_transaction == 1) {
485 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit");
486 if (wpa_s->current_bss == NULL ||
487 wpa_s->current_ssid == NULL)
488 return -1;
dd43026a 489 if (wpa_s->sme.sae.state != SAE_COMMITTED)
21af6d15 490 return -1;
625f202a
JM		 491 if (sae_parse_commit(&wpa_s->sme.sae, data, len, NULL, NULL,
492 wpa_s->conf->sae_groups) !=
146f6c9a 493 WLAN_STATUS_SUCCESS)
21af6d15 494 return -1;
146f6c9a
JM		 495
496 if (sae_process_commit(&wpa_s->sme.sae) < 0) {
497 wpa_printf(MSG_DEBUG, "SAE: Failed to process peer "
498 "commit");
499 return -1;
500 }
501
d136c376
JM		 502 wpabuf_free(wpa_s->sme.sae_token);
503 wpa_s->sme.sae_token = NULL;
c10347f2
JM		 504 sme_send_authentication(wpa_s, wpa_s->current_bss,
505 wpa_s->current_ssid, 0);
506 return 0;
507 } else if (auth_transaction == 2) {
508 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm");
dd43026a 509 if (wpa_s->sme.sae.state != SAE_CONFIRMED)
21af6d15 510 return -1;
f2e9818f 511 if (sae_check_confirm(&wpa_s->sme.sae, data, len) < 0)
21af6d15 512 return -1;
dd43026a 513 wpa_s->sme.sae.state = SAE_ACCEPTED;
b4fd3613 514 sae_clear_temp_data(&wpa_s->sme.sae);
c10347f2
JM		 515 return 1;
516 }
517
518 return -1;
519}
520#endif /* CONFIG_SAE */
521
522
c2a04078
JM		 523void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
524{
c2a04078
JM		 525 struct wpa_ssid *ssid = wpa_s->current_ssid;
526
527 if (ssid == NULL) {
f049052b
BG		 528 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
529 "when network is not selected");
c2a04078
JM		 530 return;
531 }
532
533 if (wpa_s->wpa_state != WPA_AUTHENTICATING) {
f049052b
BG		 534 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
535 "when not in authenticating state");
c2a04078
JM		 536 return;
537 }
538
539 if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) {
f049052b
BG		 540 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with "
541 "unexpected peer " MACSTR,
542 MAC2STR(data->auth.peer));
c2a04078
JM		 543 return;
544 }
545
f049052b 546 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR
c10347f2 547 " auth_type=%d auth_transaction=%d status_code=%d",
f049052b 548 MAC2STR(data->auth.peer), data->auth.auth_type,
c10347f2 549 data->auth.auth_transaction, data->auth.status_code);
c2a04078
JM		 550 wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs",
551 data->auth.ies, data->auth.ies_len);
552
e29853bb
BG		 553 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
554
c10347f2
JM		 555#ifdef CONFIG_SAE
556 if (data->auth.auth_type == WLAN_AUTH_SAE) {
21af6d15
JM		 557 int res;
558 res = sme_sae_auth(wpa_s, data->auth.auth_transaction,
559 data->auth.status_code, data->auth.ies,
560 data->auth.ies_len);
561 if (res < 0) {
562 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
563 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
564
565 }
566 if (res != 1)
c10347f2 567 return;
47b55a3e
JM		 568
569 wpa_printf(MSG_DEBUG, "SME: SAE completed - setting PMK for "
570 "4-way handshake");
571 wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN);
c10347f2
JM		 572 }
573#endif /* CONFIG_SAE */
574
c2a04078 575 if (data->auth.status_code != WLAN_STATUS_SUCCESS) {
f049052b
BG		 576 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication failed (status "
577 "code %d)", data->auth.status_code);
cb1583f6
SO		 578
579 if (data->auth.status_code !=
580 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG ||
581 wpa_s->sme.auth_alg == data->auth.auth_type ||
7e6646c7 582 wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) {
0fb337c1 583 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
c1c02342 584 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
cb1583f6 585 return;
7e6646c7 586 }
cb1583f6
SO		 587
588 switch (data->auth.auth_type) {
589 case WLAN_AUTH_OPEN:
590 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED;
591
f049052b 592 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth");
cb1583f6
SO		 593 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
594 wpa_s->current_ssid);
595 return;
596
597 case WLAN_AUTH_SHARED_KEY:
598 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP;
599
f049052b 600 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth");
cb1583f6
SO		 601 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
602 wpa_s->current_ssid);
603 return;
604
605 default:
606 return;
607 }
c2a04078
JM		 608 }
609
610#ifdef CONFIG_IEEE80211R
611 if (data->auth.auth_type == WLAN_AUTH_FT) {
612 union wpa_event_data edata;
613 os_memset(&edata, 0, sizeof(edata));
614 edata.ft_ies.ies = data->auth.ies;
615 edata.ft_ies.ies_len = data->auth.ies_len;
616 os_memcpy(edata.ft_ies.target_ap, data->auth.peer, ETH_ALEN);
617 wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &edata);
618 }
619#endif /* CONFIG_IEEE80211R */
620
71024cb2
JM		 621 sme_associate(wpa_s, ssid->mode, data->auth.peer,
622 data->auth.auth_type);
623}
624
625
626void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
627 const u8 *bssid, u16 auth_type)
628{
629 struct wpa_driver_associate_params params;
d9a27b04 630 struct ieee802_11_elems elems;
80e8a5ee
BG		 631#ifdef CONFIG_HT_OVERRIDES
632 struct ieee80211_ht_capabilities htcaps;
633 struct ieee80211_ht_capabilities htcaps_mask;
634#endif /* CONFIG_HT_OVERRIDES */
e9ee8dc3
JB		 635#ifdef CONFIG_VHT_OVERRIDES
636 struct ieee80211_vht_capabilities vhtcaps;
637 struct ieee80211_vht_capabilities vhtcaps_mask;
638#endif /* CONFIG_VHT_OVERRIDES */
71024cb2 639
c2a04078 640 os_memset(&params, 0, sizeof(params));
71024cb2 641 params.bssid = bssid;
c2a04078
JM		 642 params.ssid = wpa_s->sme.ssid;
643 params.ssid_len = wpa_s->sme.ssid_len;
644 params.freq = wpa_s->sme.freq;
1f6c0ab8
BS		 645 params.bg_scan_period = wpa_s->current_ssid ?
646 wpa_s->current_ssid->bg_scan_period : -1;
c2a04078
JM		 647 params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
648 wpa_s->sme.assoc_req_ie : NULL;
649 params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
62769a88
JM		 650 params.pairwise_suite =
651 wpa_cipher_to_suite_driver(wpa_s->pairwise_cipher);
652 params.group_suite = wpa_cipher_to_suite_driver(wpa_s->group_cipher);
80e8a5ee
BG		 653#ifdef CONFIG_HT_OVERRIDES
654 os_memset(&htcaps, 0, sizeof(htcaps));
655 os_memset(&htcaps_mask, 0, sizeof(htcaps_mask));
656 params.htcaps = (u8 *) &htcaps;
657 params.htcaps_mask = (u8 *) &htcaps_mask;
658 wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, &params);
659#endif /* CONFIG_HT_OVERRIDES */
e9ee8dc3
JB		 660#ifdef CONFIG_VHT_OVERRIDES
661 os_memset(&vhtcaps, 0, sizeof(vhtcaps));
662 os_memset(&vhtcaps_mask, 0, sizeof(vhtcaps_mask));
663 params.vhtcaps = &vhtcaps;
664 params.vhtcaps_mask = &vhtcaps_mask;
665 wpa_supplicant_apply_vht_overrides(wpa_s, wpa_s->current_ssid, &params);
666#endif /* CONFIG_VHT_OVERRIDES */
c2a04078 667#ifdef CONFIG_IEEE80211R
71024cb2 668 if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
c2a04078
JM		 669 params.wpa_ie = wpa_s->sme.ft_ies;
670 params.wpa_ie_len = wpa_s->sme.ft_ies_len;
671 }
672#endif /* CONFIG_IEEE80211R */
71024cb2 673 params.mode = mode;
c2a04078 674 params.mgmt_frame_protection = wpa_s->sme.mfp;
62fa124c
JM		 675 if (wpa_s->sme.prev_bssid_set)
676 params.prev_bssid = wpa_s->sme.prev_bssid;
c2a04078
JM		 677
678 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
679 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
680 params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "",
681 params.freq);
682
683 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
684
9efc3f2a
JM		 685 if (params.wpa_ie == NULL ||
686 ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0)
d9a27b04 687 < 0) {
f049052b 688 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!");
d9a27b04
JM		 689 os_memset(&elems, 0, sizeof(elems));
690 }
64fa840a
JM		 691 if (elems.rsn_ie) {
692 params.wpa_proto = WPA_PROTO_RSN;
d9a27b04
JM		 693 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2,
694 elems.rsn_ie_len + 2);
64fa840a
JM		 695 } else if (elems.wpa_ie) {
696 params.wpa_proto = WPA_PROTO_WPA;
d9a27b04
JM		 697 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
698 elems.wpa_ie_len + 2);
64fa840a 699 } else
d9a27b04 700 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
ffad8858 701 if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group)
6e3f4b89 702 params.p2p = 1;
d9a27b04 703
eea2fd9e
JM		 704 if (wpa_s->parent->set_sta_uapsd)
705 params.uapsd = wpa_s->parent->sta_uapsd;
706 else
707 params.uapsd = -1;
708
c2a04078 709 if (wpa_drv_associate(wpa_s, &params) < 0) {
f049052b
BG		 710 wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the "
711 "driver failed");
e5ad96b7 712 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
c1c02342 713 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
e5ad96b7 714 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
c2a04078
JM		 715 return;
716 }
717
e29853bb
BG		 718 eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s,
719 NULL);
c2a04078
JM		 720}
721
722
723int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
724 const u8 *ies, size_t ies_len)
725{
726 if (md == NULL || ies == NULL) {
f049052b 727 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain");
c2a04078
JM		 728 os_free(wpa_s->sme.ft_ies);
729 wpa_s->sme.ft_ies = NULL;
730 wpa_s->sme.ft_ies_len = 0;
731 wpa_s->sme.ft_used = 0;
732 return 0;
733 }
734
735 os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN);
736 wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len);
737 os_free(wpa_s->sme.ft_ies);
738 wpa_s->sme.ft_ies = os_malloc(ies_len);
739 if (wpa_s->sme.ft_ies == NULL)
740 return -1;
741 os_memcpy(wpa_s->sme.ft_ies, ies, ies_len);
742 wpa_s->sme.ft_ies_len = ies_len;
743 return 0;
744}
efa46078
JM		 745
746
e29853bb 747static void sme_deauth(struct wpa_supplicant *wpa_s)
efa46078 748{
8bac466b
JM		 749 int bssid_changed;
750
8bac466b 751 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
76d11d3f 752
76d11d3f
JM		 753 if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
754 WLAN_REASON_DEAUTH_LEAVING) < 0) {
f049052b
BG		 755 wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver "
756 "failed");
76d11d3f 757 }
62fa124c 758 wpa_s->sme.prev_bssid_set = 0;
76d11d3f 759
0fb337c1 760 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
76d11d3f 761 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
efa46078
JM		 762 os_memset(wpa_s->bssid, 0, ETH_ALEN);
763 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
8bac466b
JM		 764 if (bssid_changed)
765 wpas_notify_bssid_changed(wpa_s);
efa46078 766}
da1fb17c
JM		 767
768
e29853bb
BG		 769void sme_event_assoc_reject(struct wpa_supplicant *wpa_s,
770 union wpa_event_data *data)
771{
772 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: "
773 "status code %d", MAC2STR(wpa_s->pending_bssid),
774 data->assoc_reject.status_code);
775
776 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
777
778 /*
779 * For now, unconditionally terminate the previous authentication. In
780 * theory, this should not be needed, but mac80211 gets quite confused
781 * if the authentication is left pending.. Some roaming cases might
782 * benefit from using the previous authentication, so this could be
783 * optimized in the future.
784 */
785 sme_deauth(wpa_s);
786}
787
788
da1fb17c
JM		 789void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s,
790 union wpa_event_data *data)
791{
f049052b 792 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out");
0fb337c1 793 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1193dc8f 794 wpa_supplicant_mark_disassoc(wpa_s);
da1fb17c
JM		 795}
796
797
798void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s,
799 union wpa_event_data *data)
800{
f049052b 801 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out");
0fb337c1 802 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
da1fb17c 803 wpa_supplicant_mark_disassoc(wpa_s);
da1fb17c 804}
a84ed99e
JM		 805
806
807void sme_event_disassoc(struct wpa_supplicant *wpa_s,
808 union wpa_event_data *data)
809{
f049052b 810 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received");
17fbb751 811 if (wpa_s->sme.prev_bssid_set) {
a84ed99e
JM		 812 /*
813 * cfg80211/mac80211 can get into somewhat confused state if
814 * the AP only disassociates us and leaves us in authenticated
815 * state. For now, force the state to be cleared to avoid
816 * confusing errors if we try to associate with the AP again.
817 */
f049052b
BG		 818 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear "
819 "driver state");
7e26053a 820 wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid,
a84ed99e
JM		 821 WLAN_REASON_DEAUTH_LEAVING);
822 }
823}
7d878ca7
JM		 824
825
e29853bb
BG		 826static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx)
827{
828 struct wpa_supplicant *wpa_s = eloop_ctx;
829 if (wpa_s->wpa_state == WPA_AUTHENTICATING) {
830 wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout");
831 sme_deauth(wpa_s);
832 }
833}
834
835
836static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx)
837{
838 struct wpa_supplicant *wpa_s = eloop_ctx;
839 if (wpa_s->wpa_state == WPA_ASSOCIATING) {
840 wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout");
841 sme_deauth(wpa_s);
842 }
843}
844
845
846void sme_state_changed(struct wpa_supplicant *wpa_s)
847{
848 /* Make sure timers are cleaned up appropriately. */
849 if (wpa_s->wpa_state != WPA_ASSOCIATING)
850 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
851 if (wpa_s->wpa_state != WPA_AUTHENTICATING)
852 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
853}
854
855
856void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s,
857 const u8 *prev_pending_bssid)
858{
859 /*
860 * mac80211-workaround to force deauth on failed auth cmd,
861 * requires us to remain in authenticating state to allow the
862 * second authentication attempt to be continued properly.
863 */
864 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication "
865 "to proceed after disconnection event");
866 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
867 os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
868
869 /*
870 * Re-arm authentication timer in case auth fails for whatever reason.
871 */
872 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
873 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
874 NULL);
875}
876
877
878void sme_deinit(struct wpa_supplicant *wpa_s)
879{
880 os_free(wpa_s->sme.ft_ies);
881 wpa_s->sme.ft_ies = NULL;
882 wpa_s->sme.ft_ies_len = 0;
883#ifdef CONFIG_IEEE80211W
884 sme_stop_sa_query(wpa_s);
885#endif /* CONFIG_IEEE80211W */
d136c376
JM		 886#ifdef CONFIG_SAE
887 wpabuf_free(wpa_s->sme.sae_token);
888 wpa_s->sme.sae_token = NULL;
a46d72d7 889 sae_clear_data(&wpa_s->sme.sae);
d136c376 890#endif /* CONFIG_SAE */
e29853bb
BG		 891
892 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
893 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
c3701c66
RM		 894 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
895}
896
897
898static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s,
899 const u8 *chan_list, u8 num_channels,
900 u8 num_intol)
901{
902 struct ieee80211_2040_bss_coex_ie *bc_ie;
903 struct ieee80211_2040_intol_chan_report *ic_report;
904 struct wpabuf *buf;
905
906 wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR,
907 MAC2STR(wpa_s->bssid));
908
909 buf = wpabuf_alloc(2 + /* action.category + action_code */
910 sizeof(struct ieee80211_2040_bss_coex_ie) +
911 sizeof(struct ieee80211_2040_intol_chan_report) +
912 num_channels);
913 if (buf == NULL)
914 return;
915
916 wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC);
917 wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX);
918
919 bc_ie = wpabuf_put(buf, sizeof(*bc_ie));
920 bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE;
921 bc_ie->length = 1;
922 if (num_intol)
923 bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ;
924
925 if (num_channels > 0) {
926 ic_report = wpabuf_put(buf, sizeof(*ic_report));
927 ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT;
928 ic_report->length = num_channels + 1;
929 ic_report->op_class = 0;
930 os_memcpy(wpabuf_put(buf, num_channels), chan_list,
931 num_channels);
932 }
933
934 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
935 wpa_s->own_addr, wpa_s->bssid,
936 wpabuf_head(buf), wpabuf_len(buf), 0) < 0) {
937 wpa_msg(wpa_s, MSG_INFO,
938 "SME: Failed to send 20/40 BSS Coexistence frame");
939 }
940
941 wpabuf_free(buf);
942}
943
944
c3701c66
RM		 945int sme_proc_obss_scan(struct wpa_supplicant *wpa_s)
946{
947 struct wpa_bss *bss;
948 const u8 *ie;
949 u16 ht_cap;
950 u8 chan_list[P2P_MAX_CHANNELS], channel;
951 u8 num_channels = 0, num_intol = 0, i;
952
953 if (!wpa_s->sme.sched_obss_scan)
954 return 0;
955
956 wpa_s->sme.sched_obss_scan = 0;
957 if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED)
958 return 1;
959
960 /*
961 * Check whether AP uses regulatory triplet or channel triplet in
962 * country info. Right now the operating class of the BSS channel
963 * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12),
964 * based on the assumption that operating class triplet is not used in
965 * beacon frame. If the First Channel Number/Operating Extension
966 * Identifier octet has a positive integer value of 201 or greater,
967 * then its operating class triplet.
968 *
969 * TODO: If Supported Operating Classes element is present in beacon
970 * frame, have to lookup operating class in Annex E and fill them in
971 * 2040 coex frame.
972 */
973 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY);
974 if (ie && (ie[1] >= 6) && (ie[5] >= 201))
975 return 1;
976
977 os_memset(chan_list, 0, sizeof(chan_list));
978
979 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
980 /* Skip other band bss */
e864c0ae
JM		 981 enum hostapd_hw_mode mode;
982 mode = ieee80211_freq_to_chan(bss->freq, &channel);
983 if (mode != HOSTAPD_MODE_IEEE80211G &&
984 mode != HOSTAPD_MODE_IEEE80211B)
c3701c66
RM		 985 continue;
986
987 ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP);
988 ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0;
989
990 if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) {
991 /* Check whether the channel is already considered */
992 for (i = 0; i < num_channels; i++) {
993 if (channel == chan_list[i])
994 break;
995 }
996 if (i != num_channels)
997 continue;
998
999 if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)
1000 num_intol++;
1001
1002 chan_list[num_channels++] = channel;
1003 }
1004 }
1005
1006 sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol);
1007 return 1;
1008}
1009
1010
6434ad09
JM		 1011static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
1012 u16 num_modes,
1013 enum hostapd_hw_mode mode)
1014{
1015 u16 i;
1016
1017 for (i = 0; i < num_modes; i++) {
1018 if (modes[i].mode == mode)
1019 return &modes[i];
1020 }
1021
1022 return NULL;
1023}
1024
1025
1026static void wpa_setband_scan_freqs_list(struct wpa_supplicant *wpa_s,
1027 enum hostapd_hw_mode band,
1028 struct wpa_driver_scan_params *params)
1029{
1030 /* Include only supported channels for the specified band */
1031 struct hostapd_hw_modes *mode;
1032 int count, i;
1033
1034 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, band);
1035 if (mode == NULL) {
1036 /* No channels supported in this band - use empty list */
1037 params->freqs = os_zalloc(sizeof(int));
1038 return;
1039 }
1040
f9884c09 1041 params->freqs = os_calloc(mode->num_channels + 1, sizeof(int));
6434ad09
JM		 1042 if (params->freqs == NULL)
1043 return;
1044 for (count = 0, i = 0; i < mode->num_channels; i++) {
1045 if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED)
1046 continue;
1047 params->freqs[count++] = mode->channels[i].freq;
1048 }
1049}
1050
1051
c3701c66
RM		 1052static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1053{
1054 struct wpa_supplicant *wpa_s = eloop_ctx;
1055 struct wpa_driver_scan_params params;
1056
1057 if (!wpa_s->current_bss) {
1058 wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request");
1059 return;
1060 }
1061
1062 os_memset(&params, 0, sizeof(params));
6434ad09 1063 wpa_setband_scan_freqs_list(wpa_s, HOSTAPD_MODE_IEEE80211G, &params);
c3701c66
RM		 1064 wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan");
1065
1066 if (wpa_supplicant_trigger_scan(wpa_s, &params))
1067 wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan");
1068 else
1069 wpa_s->sme.sched_obss_scan = 1;
6434ad09 1070 os_free(params.freqs);
c3701c66
RM		 1071
1072 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
1073 sme_obss_scan_timeout, wpa_s, NULL);
1074}
1075
1076
1077void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable)
1078{
1079 const u8 *ie;
1080 struct wpa_bss *bss = wpa_s->current_bss;
1081 struct wpa_ssid *ssid = wpa_s->current_ssid;
b6871ebb
AN		 1082 struct hostapd_hw_modes *hw_mode = NULL;
1083 int i;
c3701c66
RM		 1084
1085 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
1086 wpa_s->sme.sched_obss_scan = 0;
1087 if (!enable)
1088 return;
1089
368b1957
AK		 1090 /*
1091 * Schedule OBSS scan if driver is using station SME in wpa_supplicant
1092 * or it expects OBSS scan to be performed by wpa_supplicant.
1093 */
1094 if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) ||
1095 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) ||
1096 ssid == NULL || ssid->mode != IEEE80211_MODE_INFRA)
1097 return;
c3701c66 1098
b6871ebb
AN		 1099 if (!wpa_s->hw.modes)
1100 return;
1101
1102 /* only HT caps in 11g mode are relevant */
1103 for (i = 0; i < wpa_s->hw.num_modes; i++) {
1104 hw_mode = &wpa_s->hw.modes[i];
1105 if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G)
1106 break;
1107 }
1108
1109 /* Driver does not support HT40 for 11g or doesn't have 11g. */
1110 if (i == wpa_s->hw.num_modes || !hw_mode ||
1111 !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1112 return;
c3701c66
RM		 1113
1114 if (bss == NULL || bss->freq < 2400 || bss->freq > 2500)
1115 return; /* Not associated on 2.4 GHz band */
1116
1117 /* Check whether AP supports HT40 */
1118 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP);
1119 if (!ie || ie[1] < 2 ||
1120 !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1121 return; /* AP does not support HT40 */
1122
1123 ie = wpa_bss_get_ie(wpa_s->current_bss,
1124 WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS);
1125 if (!ie || ie[1] < 14)
1126 return; /* AP does not request OBSS scans */
1127
1128 wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6);
1129 if (wpa_s->sme.obss_scan_int < 10) {
1130 wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u "
1131 "replaced with the minimum 10 sec",
1132 wpa_s->sme.obss_scan_int);
1133 wpa_s->sme.obss_scan_int = 10;
1134 }
1135 wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec",
1136 wpa_s->sme.obss_scan_int);
1137 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
1138 sme_obss_scan_timeout, wpa_s, NULL);
e29853bb
BG		 1139}
1140
1141
7d878ca7
JM		 1142#ifdef CONFIG_IEEE80211W
1143
1144static const unsigned int sa_query_max_timeout = 1000;
1145static const unsigned int sa_query_retry_timeout = 201;
1146
1147static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s)
1148{
1149 u32 tu;
1150 struct os_time now, passed;
1151 os_get_time(&now);
1152 os_time_sub(&now, &wpa_s->sme.sa_query_start, &passed);
1153 tu = (passed.sec * 1000000 + passed.usec) / 1024;
1154 if (sa_query_max_timeout < tu) {
f049052b 1155 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out");
7d878ca7
JM		 1156 sme_stop_sa_query(wpa_s);
1157 wpa_supplicant_deauthenticate(
1158 wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID);
1159 return 1;
1160 }
1161
1162 return 0;
1163}
1164
1165
1166static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s,
1167 const u8 *trans_id)
1168{
1169 u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN];
f049052b
BG		 1170 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to "
1171 MACSTR, MAC2STR(wpa_s->bssid));
7d878ca7
JM		 1172 wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID",
1173 trans_id, WLAN_SA_QUERY_TR_ID_LEN);
1174 req[0] = WLAN_ACTION_SA_QUERY;
1175 req[1] = WLAN_SA_QUERY_REQUEST;
1176 os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN);
190b9062 1177 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
7d878ca7 1178 wpa_s->own_addr, wpa_s->bssid,
b106173a 1179 req, sizeof(req), 0) < 0)
f049052b
BG		 1180 wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query "
1181 "Request");
7d878ca7
JM		 1182}
1183
1184
1185static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
1186{
1187 struct wpa_supplicant *wpa_s = eloop_ctx;
1188 unsigned int timeout, sec, usec;
1189 u8 *trans_id, *nbuf;
1190
1191 if (wpa_s->sme.sa_query_count > 0 &&
1192 sme_check_sa_query_timeout(wpa_s))
1193 return;
1194
067ffa26
JM		 1195 nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id,
1196 wpa_s->sme.sa_query_count + 1,
1197 WLAN_SA_QUERY_TR_ID_LEN);
7d878ca7
JM		 1198 if (nbuf == NULL)
1199 return;
1200 if (wpa_s->sme.sa_query_count == 0) {
1201 /* Starting a new SA Query procedure */
1202 os_get_time(&wpa_s->sme.sa_query_start);
1203 }
1204 trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
1205 wpa_s->sme.sa_query_trans_id = nbuf;
1206 wpa_s->sme.sa_query_count++;
1207
1208 os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN);
1209
1210 timeout = sa_query_retry_timeout;
1211 sec = ((timeout / 1000) * 1024) / 1000;
1212 usec = (timeout % 1000) * 1024;
1213 eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL);
1214
f049052b
BG		 1215 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d",
1216 wpa_s->sme.sa_query_count);
7d878ca7
JM		 1217
1218 sme_send_sa_query_req(wpa_s, trans_id);
1219}
1220
1221
1222static void sme_start_sa_query(struct wpa_supplicant *wpa_s)
1223{
1224 sme_sa_query_timer(wpa_s, NULL);
1225}
1226
1227
19df9b07 1228static void sme_stop_sa_query(struct wpa_supplicant *wpa_s)
7d878ca7
JM		 1229{
1230 eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL);
1231 os_free(wpa_s->sme.sa_query_trans_id);
1232 wpa_s->sme.sa_query_trans_id = NULL;
1233 wpa_s->sme.sa_query_count = 0;
1234}
1235
1236
1237void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa,
1238 const u8 *da, u16 reason_code)
1239{
1240 struct wpa_ssid *ssid;
1241
7d878ca7
JM		 1242 if (wpa_s->wpa_state != WPA_COMPLETED)
1243 return;
1244 ssid = wpa_s->current_ssid;
62d49803
JM		 1245 if (ssid == NULL ||
1246 (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
1247 wpa_s->conf->pmf : ssid->ieee80211w) == NO_MGMT_FRAME_PROTECTION)
7d878ca7
JM		 1248 return;
1249 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
1250 return;
1251 if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA &&
1252 reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA)
1253 return;
1254 if (wpa_s->sme.sa_query_count > 0)
1255 return;
1256
f049052b
BG		 1257 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - "
1258 "possible AP/STA state mismatch - trigger SA Query");
7d878ca7
JM		 1259 sme_start_sa_query(wpa_s);
1260}
1261
1262
1263void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa,
1264 const u8 *data, size_t len)
1265{
1266 int i;
1267
1268 if (wpa_s->sme.sa_query_trans_id == NULL ||
1269 len < 1 + WLAN_SA_QUERY_TR_ID_LEN ||
1270 data[0] != WLAN_SA_QUERY_RESPONSE)
1271 return;
f049052b
BG		 1272 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from "
1273 MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
7d878ca7
JM		 1274
1275 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
1276 return;
1277
1278 for (i = 0; i < wpa_s->sme.sa_query_count; i++) {
1279 if (os_memcmp(wpa_s->sme.sa_query_trans_id +
1280 i * WLAN_SA_QUERY_TR_ID_LEN,
1281 data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0)
1282 break;
1283 }
1284
1285 if (i >= wpa_s->sme.sa_query_count) {
f049052b
BG		 1286 wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query "
1287 "transaction identifier found");
7d878ca7
JM		 1288 return;
1289 }
1290
f049052b
BG		 1291 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received "
1292 "from " MACSTR, MAC2STR(sa));
7d878ca7
JM		 1293 sme_stop_sa_query(wpa_s);
1294}
1295
1296#endif /* CONFIG_IEEE80211W */
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