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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 | ||
35 | static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx); | |
36 | static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx); | |
c3701c66 | 37 | static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx); |
e29853bb BG |
38 | #ifdef CONFIG_IEEE80211W |
39 | static void sme_stop_sa_query(struct wpa_supplicant *wpa_s); | |
40 | #endif /* CONFIG_IEEE80211W */ | |
41 | ||
42 | ||
c10347f2 JM |
43 | #ifdef CONFIG_SAE |
44 | ||
8e31e955 JM |
45 | static struct wpabuf * sme_auth_build_sae_commit(struct wpa_supplicant *wpa_s, |
46 | struct wpa_ssid *ssid, | |
47 | const u8 *bssid) | |
c10347f2 JM |
48 | { |
49 | struct wpabuf *buf; | |
50 | ||
8e31e955 JM |
51 | if (ssid->passphrase == NULL) { |
52 | wpa_printf(MSG_DEBUG, "SAE: No password available"); | |
53 | return NULL; | |
54 | } | |
55 | ||
56 | if (sae_prepare_commit(wpa_s->own_addr, bssid, | |
57 | (u8 *) ssid->passphrase, | |
58 | os_strlen(ssid->passphrase), | |
59 | &wpa_s->sme.sae) < 0) { | |
60 | wpa_printf(MSG_DEBUG, "SAE: Could not pick PWE"); | |
61 | return NULL; | |
62 | } | |
63 | ||
64 | buf = wpabuf_alloc(4 + SAE_COMMIT_MAX_LEN); | |
c10347f2 JM |
65 | if (buf == NULL) |
66 | return NULL; | |
67 | ||
68 | wpabuf_put_le16(buf, 1); /* Transaction seq# */ | |
69 | wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS); | |
8e31e955 | 70 | sae_write_commit(&wpa_s->sme.sae, buf); |
c10347f2 JM |
71 | |
72 | return buf; | |
73 | } | |
74 | ||
75 | ||
76 | static struct wpabuf * sme_auth_build_sae_confirm(struct wpa_supplicant *wpa_s) | |
77 | { | |
78 | struct wpabuf *buf; | |
79 | ||
fb8fcc29 | 80 | buf = wpabuf_alloc(4 + SAE_CONFIRM_MAX_LEN); |
c10347f2 JM |
81 | if (buf == NULL) |
82 | return NULL; | |
83 | ||
84 | wpabuf_put_le16(buf, 2); /* Transaction seq# */ | |
85 | wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS); | |
fb8fcc29 | 86 | sae_write_confirm(&wpa_s->sme.sae, buf); |
c10347f2 JM |
87 | |
88 | return buf; | |
89 | } | |
90 | ||
91 | #endif /* CONFIG_SAE */ | |
92 | ||
93 | ||
215ae884 JM |
94 | static void sme_send_authentication(struct wpa_supplicant *wpa_s, |
95 | struct wpa_bss *bss, struct wpa_ssid *ssid, | |
96 | int start) | |
c2a04078 JM |
97 | { |
98 | struct wpa_driver_auth_params params; | |
8bac466b | 99 | struct wpa_ssid *old_ssid; |
fdbe50ed | 100 | #ifdef CONFIG_IEEE80211R |
c2a04078 | 101 | const u8 *ie; |
fdbe50ed | 102 | #endif /* CONFIG_IEEE80211R */ |
c2a04078 JM |
103 | #ifdef CONFIG_IEEE80211R |
104 | const u8 *md = NULL; | |
105 | #endif /* CONFIG_IEEE80211R */ | |
8bac466b | 106 | int i, bssid_changed; |
c10347f2 | 107 | struct wpabuf *resp = NULL; |
03e47c9c JM |
108 | u8 ext_capab[10]; |
109 | int ext_capab_len; | |
c2a04078 JM |
110 | |
111 | if (bss == NULL) { | |
f049052b BG |
112 | wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for " |
113 | "the network"); | |
c2a04078 JM |
114 | return; |
115 | } | |
116 | ||
8f770587 JM |
117 | wpa_s->current_bss = bss; |
118 | ||
c2a04078 JM |
119 | os_memset(¶ms, 0, sizeof(params)); |
120 | wpa_s->reassociate = 0; | |
121 | ||
122 | params.freq = bss->freq; | |
123 | params.bssid = bss->bssid; | |
6fa81a3b JM |
124 | params.ssid = bss->ssid; |
125 | params.ssid_len = bss->ssid_len; | |
2f4f73b1 | 126 | params.p2p = ssid->p2p_group; |
c2a04078 | 127 | |
62fa124c JM |
128 | if (wpa_s->sme.ssid_len != params.ssid_len || |
129 | os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0) | |
130 | wpa_s->sme.prev_bssid_set = 0; | |
131 | ||
c2a04078 JM |
132 | wpa_s->sme.freq = params.freq; |
133 | os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len); | |
134 | wpa_s->sme.ssid_len = params.ssid_len; | |
135 | ||
abd9fafa | 136 | params.auth_alg = WPA_AUTH_ALG_OPEN; |
c2a04078 JM |
137 | #ifdef IEEE8021X_EAPOL |
138 | if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) { | |
139 | if (ssid->leap) { | |
140 | if (ssid->non_leap == 0) | |
abd9fafa | 141 | params.auth_alg = WPA_AUTH_ALG_LEAP; |
c2a04078 | 142 | else |
abd9fafa | 143 | params.auth_alg |= WPA_AUTH_ALG_LEAP; |
c2a04078 JM |
144 | } |
145 | } | |
146 | #endif /* IEEE8021X_EAPOL */ | |
f049052b BG |
147 | wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x", |
148 | params.auth_alg); | |
c2a04078 | 149 | if (ssid->auth_alg) { |
abd9fafa | 150 | params.auth_alg = ssid->auth_alg; |
f049052b BG |
151 | wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: " |
152 | "0x%x", params.auth_alg); | |
c2a04078 | 153 | } |
c10347f2 JM |
154 | #ifdef CONFIG_SAE |
155 | if (wpa_key_mgmt_sae(ssid->key_mgmt)) { | |
156 | const u8 *rsn; | |
157 | struct wpa_ie_data ied; | |
158 | ||
159 | rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); | |
160 | if (rsn && | |
161 | wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0) { | |
162 | if (wpa_key_mgmt_sae(ied.key_mgmt)) { | |
163 | wpa_dbg(wpa_s, MSG_DEBUG, "Using SAE auth_alg"); | |
164 | params.auth_alg = WPA_AUTH_ALG_SAE; | |
165 | } | |
166 | } | |
167 | } | |
168 | #endif /* CONFIG_SAE */ | |
c2a04078 | 169 | |
a0b2f99b JM |
170 | for (i = 0; i < NUM_WEP_KEYS; i++) { |
171 | if (ssid->wep_key_len[i]) | |
172 | params.wep_key[i] = ssid->wep_key[i]; | |
173 | params.wep_key_len[i] = ssid->wep_key_len[i]; | |
174 | } | |
175 | params.wep_tx_keyidx = ssid->wep_tx_keyidx; | |
176 | ||
8bac466b | 177 | bssid_changed = !is_zero_ether_addr(wpa_s->bssid); |
c2a04078 JM |
178 | os_memset(wpa_s->bssid, 0, ETH_ALEN); |
179 | os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN); | |
8bac466b JM |
180 | if (bssid_changed) |
181 | wpas_notify_bssid_changed(wpa_s); | |
c2a04078 | 182 | |
f337f0e9 JM |
183 | if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) || |
184 | wpa_bss_get_ie(bss, WLAN_EID_RSN)) && | |
0bf927a0 | 185 | wpa_key_mgmt_wpa(ssid->key_mgmt)) { |
c2a04078 | 186 | int try_opportunistic; |
6e202021 JM |
187 | try_opportunistic = (ssid->proactive_key_caching < 0 ? |
188 | wpa_s->conf->okc : | |
189 | ssid->proactive_key_caching) && | |
c2a04078 JM |
190 | (ssid->proto & WPA_PROTO_RSN); |
191 | if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, | |
192 | wpa_s->current_ssid, | |
193 | try_opportunistic) == 0) | |
194 | eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1); | |
195 | wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie); | |
196 | if (wpa_supplicant_set_suites(wpa_s, bss, ssid, | |
197 | wpa_s->sme.assoc_req_ie, | |
198 | &wpa_s->sme.assoc_req_ie_len)) { | |
f049052b BG |
199 | wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA " |
200 | "key management and encryption suites"); | |
c2a04078 JM |
201 | return; |
202 | } | |
a3f7e518 JM |
203 | } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && |
204 | wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) { | |
205 | /* | |
206 | * Both WPA and non-WPA IEEE 802.1X enabled in configuration - | |
207 | * use non-WPA since the scan results did not indicate that the | |
208 | * AP is using WPA or WPA2. | |
209 | */ | |
210 | wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); | |
211 | wpa_s->sme.assoc_req_ie_len = 0; | |
0bf927a0 | 212 | } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) { |
c2a04078 JM |
213 | wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie); |
214 | if (wpa_supplicant_set_suites(wpa_s, NULL, ssid, | |
215 | wpa_s->sme.assoc_req_ie, | |
216 | &wpa_s->sme.assoc_req_ie_len)) { | |
f049052b BG |
217 | wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA " |
218 | "key management and encryption suites (no " | |
219 | "scan results)"); | |
c2a04078 JM |
220 | return; |
221 | } | |
222 | #ifdef CONFIG_WPS | |
223 | } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) { | |
224 | struct wpabuf *wps_ie; | |
225 | wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid)); | |
226 | if (wps_ie && wpabuf_len(wps_ie) <= | |
227 | sizeof(wpa_s->sme.assoc_req_ie)) { | |
228 | wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie); | |
229 | os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie), | |
230 | wpa_s->sme.assoc_req_ie_len); | |
231 | } else | |
232 | wpa_s->sme.assoc_req_ie_len = 0; | |
233 | wpabuf_free(wps_ie); | |
234 | wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); | |
235 | #endif /* CONFIG_WPS */ | |
236 | } else { | |
237 | wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); | |
238 | wpa_s->sme.assoc_req_ie_len = 0; | |
239 | } | |
240 | ||
241 | #ifdef CONFIG_IEEE80211R | |
6fa81a3b | 242 | ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN); |
c2a04078 JM |
243 | if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN) |
244 | md = ie + 2; | |
e7846b68 | 245 | wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0); |
c2a04078 JM |
246 | if (md) { |
247 | /* Prepare for the next transition */ | |
76b7981d | 248 | wpa_ft_prepare_auth_request(wpa_s->wpa, ie); |
c2a04078 JM |
249 | } |
250 | ||
0bf927a0 | 251 | if (md && wpa_key_mgmt_ft(ssid->key_mgmt)) { |
c2a04078 JM |
252 | if (wpa_s->sme.assoc_req_ie_len + 5 < |
253 | sizeof(wpa_s->sme.assoc_req_ie)) { | |
254 | struct rsn_mdie *mdie; | |
255 | u8 *pos = wpa_s->sme.assoc_req_ie + | |
256 | wpa_s->sme.assoc_req_ie_len; | |
257 | *pos++ = WLAN_EID_MOBILITY_DOMAIN; | |
258 | *pos++ = sizeof(*mdie); | |
259 | mdie = (struct rsn_mdie *) pos; | |
260 | os_memcpy(mdie->mobility_domain, md, | |
261 | MOBILITY_DOMAIN_ID_LEN); | |
f4ec630d | 262 | mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN]; |
c2a04078 JM |
263 | wpa_s->sme.assoc_req_ie_len += 5; |
264 | } | |
265 | ||
266 | if (wpa_s->sme.ft_used && | |
0d7b4409 JM |
267 | os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 && |
268 | wpa_sm_has_ptk(wpa_s->wpa)) { | |
f049052b BG |
269 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT " |
270 | "over-the-air"); | |
abd9fafa | 271 | params.auth_alg = WPA_AUTH_ALG_FT; |
c2a04078 JM |
272 | params.ie = wpa_s->sme.ft_ies; |
273 | params.ie_len = wpa_s->sme.ft_ies_len; | |
274 | } | |
275 | } | |
276 | #endif /* CONFIG_IEEE80211R */ | |
277 | ||
278 | #ifdef CONFIG_IEEE80211W | |
62d49803 JM |
279 | wpa_s->sme.mfp = ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ? |
280 | wpa_s->conf->pmf : ssid->ieee80211w; | |
281 | if (wpa_s->sme.mfp != NO_MGMT_FRAME_PROTECTION) { | |
6fa81a3b | 282 | const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); |
c2a04078 JM |
283 | struct wpa_ie_data _ie; |
284 | if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 && | |
285 | _ie.capabilities & | |
286 | (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) { | |
f049052b BG |
287 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports " |
288 | "MFP: require MFP"); | |
c2a04078 JM |
289 | wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED; |
290 | } | |
291 | } | |
292 | #endif /* CONFIG_IEEE80211W */ | |
293 | ||
5f3a6aa0 JM |
294 | #ifdef CONFIG_P2P |
295 | if (wpa_s->global->p2p) { | |
296 | u8 *pos; | |
297 | size_t len; | |
298 | int res; | |
5f3a6aa0 JM |
299 | pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len; |
300 | len = sizeof(wpa_s->sme.assoc_req_ie) - | |
301 | wpa_s->sme.assoc_req_ie_len; | |
ffad8858 JM |
302 | res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len, |
303 | ssid->p2p_group); | |
5f3a6aa0 JM |
304 | if (res >= 0) |
305 | wpa_s->sme.assoc_req_ie_len += res; | |
306 | } | |
307 | #endif /* CONFIG_P2P */ | |
308 | ||
cb418324 JM |
309 | #ifdef CONFIG_HS20 |
310 | if (wpa_s->conf->hs20) { | |
311 | struct wpabuf *hs20; | |
312 | hs20 = wpabuf_alloc(20); | |
313 | if (hs20) { | |
314 | wpas_hs20_add_indication(hs20); | |
315 | os_memcpy(wpa_s->sme.assoc_req_ie + | |
316 | wpa_s->sme.assoc_req_ie_len, | |
317 | wpabuf_head(hs20), wpabuf_len(hs20)); | |
318 | wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20); | |
319 | wpabuf_free(hs20); | |
320 | } | |
321 | } | |
322 | #endif /* CONFIG_HS20 */ | |
323 | ||
03e47c9c JM |
324 | ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab); |
325 | if (ext_capab_len > 0) { | |
92cbcf91 JM |
326 | u8 *pos = wpa_s->sme.assoc_req_ie; |
327 | if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN) | |
328 | pos += 2 + pos[1]; | |
03e47c9c | 329 | os_memmove(pos + ext_capab_len, pos, |
92cbcf91 JM |
330 | wpa_s->sme.assoc_req_ie_len - |
331 | (pos - wpa_s->sme.assoc_req_ie)); | |
03e47c9c JM |
332 | wpa_s->sme.assoc_req_ie_len += ext_capab_len; |
333 | os_memcpy(pos, ext_capab, ext_capab_len); | |
92cbcf91 | 334 | } |
92cbcf91 | 335 | |
c10347f2 JM |
336 | #ifdef CONFIG_SAE |
337 | if (params.auth_alg == WPA_AUTH_ALG_SAE) { | |
338 | if (start) | |
8e31e955 JM |
339 | resp = sme_auth_build_sae_commit(wpa_s, ssid, |
340 | bss->bssid); | |
c10347f2 JM |
341 | else |
342 | resp = sme_auth_build_sae_confirm(wpa_s); | |
343 | if (resp == NULL) | |
344 | return; | |
345 | params.sae_data = wpabuf_head(resp); | |
346 | params.sae_data_len = wpabuf_len(resp); | |
98efcc41 | 347 | wpa_s->sme.sae.state = start ? SAE_COMMIT : SAE_CONFIRM; |
c10347f2 JM |
348 | } |
349 | #endif /* CONFIG_SAE */ | |
350 | ||
a4cba8f1 | 351 | wpa_supplicant_cancel_sched_scan(wpa_s); |
c2a04078 JM |
352 | wpa_supplicant_cancel_scan(wpa_s); |
353 | ||
f049052b | 354 | wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR |
c2a04078 JM |
355 | " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid), |
356 | wpa_ssid_txt(params.ssid, params.ssid_len), params.freq); | |
357 | ||
358 | wpa_clear_keys(wpa_s, bss->bssid); | |
359 | wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING); | |
8bac466b | 360 | old_ssid = wpa_s->current_ssid; |
c2a04078 JM |
361 | wpa_s->current_ssid = ssid; |
362 | wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid); | |
363 | wpa_supplicant_initiate_eapol(wpa_s); | |
8bac466b JM |
364 | if (old_ssid != wpa_s->current_ssid) |
365 | wpas_notify_network_changed(wpa_s); | |
c2a04078 | 366 | |
62c72d72 | 367 | wpa_s->sme.auth_alg = params.auth_alg; |
c2a04078 | 368 | if (wpa_drv_authenticate(wpa_s, ¶ms) < 0) { |
f049052b | 369 | wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the " |
c2a04078 | 370 | "driver failed"); |
ed57c590 | 371 | wpas_connection_failed(wpa_s, bss->bssid); |
1193dc8f | 372 | wpa_supplicant_mark_disassoc(wpa_s); |
c10347f2 | 373 | wpabuf_free(resp); |
c2a04078 JM |
374 | return; |
375 | } | |
376 | ||
e29853bb BG |
377 | eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s, |
378 | NULL); | |
c2a04078 JM |
379 | |
380 | /* | |
381 | * Association will be started based on the authentication event from | |
382 | * the driver. | |
383 | */ | |
c10347f2 JM |
384 | |
385 | wpabuf_free(resp); | |
386 | } | |
387 | ||
388 | ||
389 | void sme_authenticate(struct wpa_supplicant *wpa_s, | |
390 | struct wpa_bss *bss, struct wpa_ssid *ssid) | |
391 | { | |
98efcc41 JM |
392 | #ifdef CONFIG_SAE |
393 | wpa_s->sme.sae.state = SAE_INIT; | |
394 | wpa_s->sme.sae.send_confirm = 0; | |
395 | #endif /* CONFIG_SAE */ | |
c10347f2 | 396 | sme_send_authentication(wpa_s, bss, ssid, 1); |
c2a04078 JM |
397 | } |
398 | ||
399 | ||
c10347f2 | 400 | #ifdef CONFIG_SAE |
21af6d15 | 401 | |
c10347f2 JM |
402 | static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction, |
403 | u16 status_code, const u8 *data, size_t len) | |
404 | { | |
405 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u " | |
406 | "status code %u", auth_transaction, status_code); | |
407 | wpa_hexdump(MSG_DEBUG, "SME: SAE fields", data, len); | |
408 | ||
409 | if (status_code != WLAN_STATUS_SUCCESS) | |
410 | return -1; | |
411 | ||
412 | if (auth_transaction == 1) { | |
413 | wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit"); | |
414 | if (wpa_s->current_bss == NULL || | |
415 | wpa_s->current_ssid == NULL) | |
416 | return -1; | |
98efcc41 | 417 | if (wpa_s->sme.sae.state != SAE_COMMIT) |
21af6d15 | 418 | return -1; |
146f6c9a JM |
419 | if (sae_parse_commit(&wpa_s->sme.sae, data, len) != |
420 | WLAN_STATUS_SUCCESS) | |
21af6d15 | 421 | return -1; |
146f6c9a JM |
422 | |
423 | if (sae_process_commit(&wpa_s->sme.sae) < 0) { | |
424 | wpa_printf(MSG_DEBUG, "SAE: Failed to process peer " | |
425 | "commit"); | |
426 | return -1; | |
427 | } | |
428 | ||
c10347f2 JM |
429 | sme_send_authentication(wpa_s, wpa_s->current_bss, |
430 | wpa_s->current_ssid, 0); | |
431 | return 0; | |
432 | } else if (auth_transaction == 2) { | |
433 | wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm"); | |
98efcc41 | 434 | if (wpa_s->sme.sae.state != SAE_CONFIRM) |
21af6d15 | 435 | return -1; |
f2e9818f | 436 | if (sae_check_confirm(&wpa_s->sme.sae, data, len) < 0) |
21af6d15 | 437 | return -1; |
c10347f2 JM |
438 | return 1; |
439 | } | |
440 | ||
441 | return -1; | |
442 | } | |
443 | #endif /* CONFIG_SAE */ | |
444 | ||
445 | ||
c2a04078 JM |
446 | void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data) |
447 | { | |
c2a04078 JM |
448 | struct wpa_ssid *ssid = wpa_s->current_ssid; |
449 | ||
450 | if (ssid == NULL) { | |
f049052b BG |
451 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event " |
452 | "when network is not selected"); | |
c2a04078 JM |
453 | return; |
454 | } | |
455 | ||
456 | if (wpa_s->wpa_state != WPA_AUTHENTICATING) { | |
f049052b BG |
457 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event " |
458 | "when not in authenticating state"); | |
c2a04078 JM |
459 | return; |
460 | } | |
461 | ||
462 | if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) { | |
f049052b BG |
463 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with " |
464 | "unexpected peer " MACSTR, | |
465 | MAC2STR(data->auth.peer)); | |
c2a04078 JM |
466 | return; |
467 | } | |
468 | ||
f049052b | 469 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR |
c10347f2 | 470 | " auth_type=%d auth_transaction=%d status_code=%d", |
f049052b | 471 | MAC2STR(data->auth.peer), data->auth.auth_type, |
c10347f2 | 472 | data->auth.auth_transaction, data->auth.status_code); |
c2a04078 JM |
473 | wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs", |
474 | data->auth.ies, data->auth.ies_len); | |
475 | ||
e29853bb BG |
476 | eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); |
477 | ||
c10347f2 JM |
478 | #ifdef CONFIG_SAE |
479 | if (data->auth.auth_type == WLAN_AUTH_SAE) { | |
21af6d15 JM |
480 | int res; |
481 | res = sme_sae_auth(wpa_s, data->auth.auth_transaction, | |
482 | data->auth.status_code, data->auth.ies, | |
483 | data->auth.ies_len); | |
484 | if (res < 0) { | |
485 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); | |
486 | wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); | |
487 | ||
488 | } | |
489 | if (res != 1) | |
c10347f2 | 490 | return; |
47b55a3e JM |
491 | |
492 | wpa_printf(MSG_DEBUG, "SME: SAE completed - setting PMK for " | |
493 | "4-way handshake"); | |
494 | wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN); | |
c10347f2 JM |
495 | } |
496 | #endif /* CONFIG_SAE */ | |
497 | ||
c2a04078 | 498 | if (data->auth.status_code != WLAN_STATUS_SUCCESS) { |
f049052b BG |
499 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication failed (status " |
500 | "code %d)", data->auth.status_code); | |
cb1583f6 SO |
501 | |
502 | if (data->auth.status_code != | |
503 | WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG || | |
504 | wpa_s->sme.auth_alg == data->auth.auth_type || | |
7e6646c7 | 505 | wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) { |
0fb337c1 | 506 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
c1c02342 | 507 | wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); |
cb1583f6 | 508 | return; |
7e6646c7 | 509 | } |
cb1583f6 SO |
510 | |
511 | switch (data->auth.auth_type) { | |
512 | case WLAN_AUTH_OPEN: | |
513 | wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED; | |
514 | ||
f049052b | 515 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth"); |
cb1583f6 SO |
516 | wpa_supplicant_associate(wpa_s, wpa_s->current_bss, |
517 | wpa_s->current_ssid); | |
518 | return; | |
519 | ||
520 | case WLAN_AUTH_SHARED_KEY: | |
521 | wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP; | |
522 | ||
f049052b | 523 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth"); |
cb1583f6 SO |
524 | wpa_supplicant_associate(wpa_s, wpa_s->current_bss, |
525 | wpa_s->current_ssid); | |
526 | return; | |
527 | ||
528 | default: | |
529 | return; | |
530 | } | |
c2a04078 JM |
531 | } |
532 | ||
533 | #ifdef CONFIG_IEEE80211R | |
534 | if (data->auth.auth_type == WLAN_AUTH_FT) { | |
535 | union wpa_event_data edata; | |
536 | os_memset(&edata, 0, sizeof(edata)); | |
537 | edata.ft_ies.ies = data->auth.ies; | |
538 | edata.ft_ies.ies_len = data->auth.ies_len; | |
539 | os_memcpy(edata.ft_ies.target_ap, data->auth.peer, ETH_ALEN); | |
540 | wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &edata); | |
541 | } | |
542 | #endif /* CONFIG_IEEE80211R */ | |
543 | ||
71024cb2 JM |
544 | sme_associate(wpa_s, ssid->mode, data->auth.peer, |
545 | data->auth.auth_type); | |
546 | } | |
547 | ||
548 | ||
549 | void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode, | |
550 | const u8 *bssid, u16 auth_type) | |
551 | { | |
552 | struct wpa_driver_associate_params params; | |
d9a27b04 | 553 | struct ieee802_11_elems elems; |
80e8a5ee BG |
554 | #ifdef CONFIG_HT_OVERRIDES |
555 | struct ieee80211_ht_capabilities htcaps; | |
556 | struct ieee80211_ht_capabilities htcaps_mask; | |
557 | #endif /* CONFIG_HT_OVERRIDES */ | |
71024cb2 | 558 | |
c2a04078 | 559 | os_memset(¶ms, 0, sizeof(params)); |
71024cb2 | 560 | params.bssid = bssid; |
c2a04078 JM |
561 | params.ssid = wpa_s->sme.ssid; |
562 | params.ssid_len = wpa_s->sme.ssid_len; | |
563 | params.freq = wpa_s->sme.freq; | |
1f6c0ab8 BS |
564 | params.bg_scan_period = wpa_s->current_ssid ? |
565 | wpa_s->current_ssid->bg_scan_period : -1; | |
c2a04078 JM |
566 | params.wpa_ie = wpa_s->sme.assoc_req_ie_len ? |
567 | wpa_s->sme.assoc_req_ie : NULL; | |
568 | params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len; | |
aca01605 JM |
569 | params.pairwise_suite = cipher_suite2driver(wpa_s->pairwise_cipher); |
570 | params.group_suite = cipher_suite2driver(wpa_s->group_cipher); | |
80e8a5ee BG |
571 | #ifdef CONFIG_HT_OVERRIDES |
572 | os_memset(&htcaps, 0, sizeof(htcaps)); | |
573 | os_memset(&htcaps_mask, 0, sizeof(htcaps_mask)); | |
574 | params.htcaps = (u8 *) &htcaps; | |
575 | params.htcaps_mask = (u8 *) &htcaps_mask; | |
576 | wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, ¶ms); | |
577 | #endif /* CONFIG_HT_OVERRIDES */ | |
c2a04078 | 578 | #ifdef CONFIG_IEEE80211R |
71024cb2 | 579 | if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) { |
c2a04078 JM |
580 | params.wpa_ie = wpa_s->sme.ft_ies; |
581 | params.wpa_ie_len = wpa_s->sme.ft_ies_len; | |
582 | } | |
583 | #endif /* CONFIG_IEEE80211R */ | |
71024cb2 | 584 | params.mode = mode; |
c2a04078 | 585 | params.mgmt_frame_protection = wpa_s->sme.mfp; |
62fa124c JM |
586 | if (wpa_s->sme.prev_bssid_set) |
587 | params.prev_bssid = wpa_s->sme.prev_bssid; | |
c2a04078 JM |
588 | |
589 | wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR | |
590 | " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid), | |
591 | params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "", | |
592 | params.freq); | |
593 | ||
594 | wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING); | |
595 | ||
9efc3f2a JM |
596 | if (params.wpa_ie == NULL || |
597 | ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0) | |
d9a27b04 | 598 | < 0) { |
f049052b | 599 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!"); |
d9a27b04 JM |
600 | os_memset(&elems, 0, sizeof(elems)); |
601 | } | |
64fa840a JM |
602 | if (elems.rsn_ie) { |
603 | params.wpa_proto = WPA_PROTO_RSN; | |
d9a27b04 JM |
604 | wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2, |
605 | elems.rsn_ie_len + 2); | |
64fa840a JM |
606 | } else if (elems.wpa_ie) { |
607 | params.wpa_proto = WPA_PROTO_WPA; | |
d9a27b04 JM |
608 | wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2, |
609 | elems.wpa_ie_len + 2); | |
64fa840a | 610 | } else |
d9a27b04 | 611 | wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0); |
ffad8858 | 612 | if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group) |
6e3f4b89 | 613 | params.p2p = 1; |
d9a27b04 | 614 | |
eea2fd9e JM |
615 | if (wpa_s->parent->set_sta_uapsd) |
616 | params.uapsd = wpa_s->parent->sta_uapsd; | |
617 | else | |
618 | params.uapsd = -1; | |
619 | ||
c2a04078 | 620 | if (wpa_drv_associate(wpa_s, ¶ms) < 0) { |
f049052b BG |
621 | wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the " |
622 | "driver failed"); | |
e5ad96b7 | 623 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
c1c02342 | 624 | wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); |
e5ad96b7 | 625 | os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); |
c2a04078 JM |
626 | return; |
627 | } | |
628 | ||
e29853bb BG |
629 | eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s, |
630 | NULL); | |
c2a04078 JM |
631 | } |
632 | ||
633 | ||
634 | int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md, | |
635 | const u8 *ies, size_t ies_len) | |
636 | { | |
637 | if (md == NULL || ies == NULL) { | |
f049052b | 638 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain"); |
c2a04078 JM |
639 | os_free(wpa_s->sme.ft_ies); |
640 | wpa_s->sme.ft_ies = NULL; | |
641 | wpa_s->sme.ft_ies_len = 0; | |
642 | wpa_s->sme.ft_used = 0; | |
643 | return 0; | |
644 | } | |
645 | ||
646 | os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN); | |
647 | wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len); | |
648 | os_free(wpa_s->sme.ft_ies); | |
649 | wpa_s->sme.ft_ies = os_malloc(ies_len); | |
650 | if (wpa_s->sme.ft_ies == NULL) | |
651 | return -1; | |
652 | os_memcpy(wpa_s->sme.ft_ies, ies, ies_len); | |
653 | wpa_s->sme.ft_ies_len = ies_len; | |
654 | return 0; | |
655 | } | |
efa46078 JM |
656 | |
657 | ||
e29853bb | 658 | static void sme_deauth(struct wpa_supplicant *wpa_s) |
efa46078 | 659 | { |
8bac466b JM |
660 | int bssid_changed; |
661 | ||
8bac466b | 662 | bssid_changed = !is_zero_ether_addr(wpa_s->bssid); |
76d11d3f | 663 | |
76d11d3f JM |
664 | if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid, |
665 | WLAN_REASON_DEAUTH_LEAVING) < 0) { | |
f049052b BG |
666 | wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver " |
667 | "failed"); | |
76d11d3f | 668 | } |
62fa124c | 669 | wpa_s->sme.prev_bssid_set = 0; |
76d11d3f | 670 | |
0fb337c1 | 671 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
76d11d3f | 672 | wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); |
efa46078 JM |
673 | os_memset(wpa_s->bssid, 0, ETH_ALEN); |
674 | os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); | |
8bac466b JM |
675 | if (bssid_changed) |
676 | wpas_notify_bssid_changed(wpa_s); | |
efa46078 | 677 | } |
da1fb17c JM |
678 | |
679 | ||
e29853bb BG |
680 | void sme_event_assoc_reject(struct wpa_supplicant *wpa_s, |
681 | union wpa_event_data *data) | |
682 | { | |
683 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: " | |
684 | "status code %d", MAC2STR(wpa_s->pending_bssid), | |
685 | data->assoc_reject.status_code); | |
686 | ||
687 | eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); | |
688 | ||
689 | /* | |
690 | * For now, unconditionally terminate the previous authentication. In | |
691 | * theory, this should not be needed, but mac80211 gets quite confused | |
692 | * if the authentication is left pending.. Some roaming cases might | |
693 | * benefit from using the previous authentication, so this could be | |
694 | * optimized in the future. | |
695 | */ | |
696 | sme_deauth(wpa_s); | |
697 | } | |
698 | ||
699 | ||
da1fb17c JM |
700 | void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s, |
701 | union wpa_event_data *data) | |
702 | { | |
f049052b | 703 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out"); |
0fb337c1 | 704 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
1193dc8f | 705 | wpa_supplicant_mark_disassoc(wpa_s); |
da1fb17c JM |
706 | } |
707 | ||
708 | ||
709 | void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s, | |
710 | union wpa_event_data *data) | |
711 | { | |
f049052b | 712 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out"); |
0fb337c1 | 713 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
da1fb17c | 714 | wpa_supplicant_mark_disassoc(wpa_s); |
da1fb17c | 715 | } |
a84ed99e JM |
716 | |
717 | ||
718 | void sme_event_disassoc(struct wpa_supplicant *wpa_s, | |
719 | union wpa_event_data *data) | |
720 | { | |
f049052b | 721 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received"); |
17fbb751 | 722 | if (wpa_s->sme.prev_bssid_set) { |
a84ed99e JM |
723 | /* |
724 | * cfg80211/mac80211 can get into somewhat confused state if | |
725 | * the AP only disassociates us and leaves us in authenticated | |
726 | * state. For now, force the state to be cleared to avoid | |
727 | * confusing errors if we try to associate with the AP again. | |
728 | */ | |
f049052b BG |
729 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear " |
730 | "driver state"); | |
7e26053a | 731 | wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid, |
a84ed99e JM |
732 | WLAN_REASON_DEAUTH_LEAVING); |
733 | } | |
734 | } | |
7d878ca7 JM |
735 | |
736 | ||
e29853bb BG |
737 | static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx) |
738 | { | |
739 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
740 | if (wpa_s->wpa_state == WPA_AUTHENTICATING) { | |
741 | wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout"); | |
742 | sme_deauth(wpa_s); | |
743 | } | |
744 | } | |
745 | ||
746 | ||
747 | static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx) | |
748 | { | |
749 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
750 | if (wpa_s->wpa_state == WPA_ASSOCIATING) { | |
751 | wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout"); | |
752 | sme_deauth(wpa_s); | |
753 | } | |
754 | } | |
755 | ||
756 | ||
757 | void sme_state_changed(struct wpa_supplicant *wpa_s) | |
758 | { | |
759 | /* Make sure timers are cleaned up appropriately. */ | |
760 | if (wpa_s->wpa_state != WPA_ASSOCIATING) | |
761 | eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); | |
762 | if (wpa_s->wpa_state != WPA_AUTHENTICATING) | |
763 | eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); | |
764 | } | |
765 | ||
766 | ||
767 | void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s, | |
768 | const u8 *prev_pending_bssid) | |
769 | { | |
770 | /* | |
771 | * mac80211-workaround to force deauth on failed auth cmd, | |
772 | * requires us to remain in authenticating state to allow the | |
773 | * second authentication attempt to be continued properly. | |
774 | */ | |
775 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication " | |
776 | "to proceed after disconnection event"); | |
777 | wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING); | |
778 | os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN); | |
779 | ||
780 | /* | |
781 | * Re-arm authentication timer in case auth fails for whatever reason. | |
782 | */ | |
783 | eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); | |
784 | eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s, | |
785 | NULL); | |
786 | } | |
787 | ||
788 | ||
789 | void sme_deinit(struct wpa_supplicant *wpa_s) | |
790 | { | |
791 | os_free(wpa_s->sme.ft_ies); | |
792 | wpa_s->sme.ft_ies = NULL; | |
793 | wpa_s->sme.ft_ies_len = 0; | |
794 | #ifdef CONFIG_IEEE80211W | |
795 | sme_stop_sa_query(wpa_s); | |
796 | #endif /* CONFIG_IEEE80211W */ | |
797 | ||
798 | eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); | |
799 | eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); | |
c3701c66 RM |
800 | eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL); |
801 | } | |
802 | ||
803 | ||
804 | static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s, | |
805 | const u8 *chan_list, u8 num_channels, | |
806 | u8 num_intol) | |
807 | { | |
808 | struct ieee80211_2040_bss_coex_ie *bc_ie; | |
809 | struct ieee80211_2040_intol_chan_report *ic_report; | |
810 | struct wpabuf *buf; | |
811 | ||
812 | wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR, | |
813 | MAC2STR(wpa_s->bssid)); | |
814 | ||
815 | buf = wpabuf_alloc(2 + /* action.category + action_code */ | |
816 | sizeof(struct ieee80211_2040_bss_coex_ie) + | |
817 | sizeof(struct ieee80211_2040_intol_chan_report) + | |
818 | num_channels); | |
819 | if (buf == NULL) | |
820 | return; | |
821 | ||
822 | wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC); | |
823 | wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX); | |
824 | ||
825 | bc_ie = wpabuf_put(buf, sizeof(*bc_ie)); | |
826 | bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE; | |
827 | bc_ie->length = 1; | |
828 | if (num_intol) | |
829 | bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ; | |
830 | ||
831 | if (num_channels > 0) { | |
832 | ic_report = wpabuf_put(buf, sizeof(*ic_report)); | |
833 | ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT; | |
834 | ic_report->length = num_channels + 1; | |
835 | ic_report->op_class = 0; | |
836 | os_memcpy(wpabuf_put(buf, num_channels), chan_list, | |
837 | num_channels); | |
838 | } | |
839 | ||
840 | if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid, | |
841 | wpa_s->own_addr, wpa_s->bssid, | |
842 | wpabuf_head(buf), wpabuf_len(buf), 0) < 0) { | |
843 | wpa_msg(wpa_s, MSG_INFO, | |
844 | "SME: Failed to send 20/40 BSS Coexistence frame"); | |
845 | } | |
846 | ||
847 | wpabuf_free(buf); | |
848 | } | |
849 | ||
850 | ||
851 | /** | |
852 | * enum wpas_band - Frequency band | |
853 | * @WPAS_BAND_2GHZ: 2.4 GHz ISM band | |
854 | * @WPAS_BAND_5GHZ: around 5 GHz band (4.9 - 5.7 GHz) | |
855 | */ | |
856 | enum wpas_band { | |
857 | WPAS_BAND_2GHZ, | |
858 | WPAS_BAND_5GHZ, | |
859 | WPAS_BAND_INVALID | |
860 | }; | |
861 | ||
862 | /** | |
863 | * freq_to_channel - Convert frequency into channel info | |
864 | * @channel: Buffer for returning channel number | |
865 | * Returns: Band (2 or 5 GHz) | |
866 | */ | |
867 | static enum wpas_band freq_to_channel(int freq, u8 *channel) | |
868 | { | |
869 | enum wpas_band band = (freq <= 2484) ? WPAS_BAND_2GHZ : WPAS_BAND_5GHZ; | |
870 | u8 chan = 0; | |
871 | ||
872 | if (freq >= 2412 && freq <= 2472) | |
873 | chan = (freq - 2407) / 5; | |
874 | else if (freq == 2484) | |
875 | chan = 14; | |
876 | else if (freq >= 5180 && freq <= 5805) | |
877 | chan = (freq - 5000) / 5; | |
878 | ||
879 | *channel = chan; | |
880 | return band; | |
881 | } | |
882 | ||
883 | ||
884 | int sme_proc_obss_scan(struct wpa_supplicant *wpa_s) | |
885 | { | |
886 | struct wpa_bss *bss; | |
887 | const u8 *ie; | |
888 | u16 ht_cap; | |
889 | u8 chan_list[P2P_MAX_CHANNELS], channel; | |
890 | u8 num_channels = 0, num_intol = 0, i; | |
891 | ||
892 | if (!wpa_s->sme.sched_obss_scan) | |
893 | return 0; | |
894 | ||
895 | wpa_s->sme.sched_obss_scan = 0; | |
896 | if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED) | |
897 | return 1; | |
898 | ||
899 | /* | |
900 | * Check whether AP uses regulatory triplet or channel triplet in | |
901 | * country info. Right now the operating class of the BSS channel | |
902 | * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12), | |
903 | * based on the assumption that operating class triplet is not used in | |
904 | * beacon frame. If the First Channel Number/Operating Extension | |
905 | * Identifier octet has a positive integer value of 201 or greater, | |
906 | * then its operating class triplet. | |
907 | * | |
908 | * TODO: If Supported Operating Classes element is present in beacon | |
909 | * frame, have to lookup operating class in Annex E and fill them in | |
910 | * 2040 coex frame. | |
911 | */ | |
912 | ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY); | |
913 | if (ie && (ie[1] >= 6) && (ie[5] >= 201)) | |
914 | return 1; | |
915 | ||
916 | os_memset(chan_list, 0, sizeof(chan_list)); | |
917 | ||
918 | dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { | |
919 | /* Skip other band bss */ | |
920 | if (freq_to_channel(bss->freq, &channel) != WPAS_BAND_2GHZ) | |
921 | continue; | |
922 | ||
923 | ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP); | |
924 | ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0; | |
925 | ||
926 | if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) { | |
927 | /* Check whether the channel is already considered */ | |
928 | for (i = 0; i < num_channels; i++) { | |
929 | if (channel == chan_list[i]) | |
930 | break; | |
931 | } | |
932 | if (i != num_channels) | |
933 | continue; | |
934 | ||
935 | if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT) | |
936 | num_intol++; | |
937 | ||
938 | chan_list[num_channels++] = channel; | |
939 | } | |
940 | } | |
941 | ||
942 | sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol); | |
943 | return 1; | |
944 | } | |
945 | ||
946 | ||
6434ad09 JM |
947 | static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes, |
948 | u16 num_modes, | |
949 | enum hostapd_hw_mode mode) | |
950 | { | |
951 | u16 i; | |
952 | ||
953 | for (i = 0; i < num_modes; i++) { | |
954 | if (modes[i].mode == mode) | |
955 | return &modes[i]; | |
956 | } | |
957 | ||
958 | return NULL; | |
959 | } | |
960 | ||
961 | ||
962 | static void wpa_setband_scan_freqs_list(struct wpa_supplicant *wpa_s, | |
963 | enum hostapd_hw_mode band, | |
964 | struct wpa_driver_scan_params *params) | |
965 | { | |
966 | /* Include only supported channels for the specified band */ | |
967 | struct hostapd_hw_modes *mode; | |
968 | int count, i; | |
969 | ||
970 | mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, band); | |
971 | if (mode == NULL) { | |
972 | /* No channels supported in this band - use empty list */ | |
973 | params->freqs = os_zalloc(sizeof(int)); | |
974 | return; | |
975 | } | |
976 | ||
f9884c09 | 977 | params->freqs = os_calloc(mode->num_channels + 1, sizeof(int)); |
6434ad09 JM |
978 | if (params->freqs == NULL) |
979 | return; | |
980 | for (count = 0, i = 0; i < mode->num_channels; i++) { | |
981 | if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED) | |
982 | continue; | |
983 | params->freqs[count++] = mode->channels[i].freq; | |
984 | } | |
985 | } | |
986 | ||
987 | ||
c3701c66 RM |
988 | static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx) |
989 | { | |
990 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
991 | struct wpa_driver_scan_params params; | |
992 | ||
993 | if (!wpa_s->current_bss) { | |
994 | wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request"); | |
995 | return; | |
996 | } | |
997 | ||
998 | os_memset(¶ms, 0, sizeof(params)); | |
6434ad09 | 999 | wpa_setband_scan_freqs_list(wpa_s, HOSTAPD_MODE_IEEE80211G, ¶ms); |
c3701c66 RM |
1000 | wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan"); |
1001 | ||
1002 | if (wpa_supplicant_trigger_scan(wpa_s, ¶ms)) | |
1003 | wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan"); | |
1004 | else | |
1005 | wpa_s->sme.sched_obss_scan = 1; | |
6434ad09 | 1006 | os_free(params.freqs); |
c3701c66 RM |
1007 | |
1008 | eloop_register_timeout(wpa_s->sme.obss_scan_int, 0, | |
1009 | sme_obss_scan_timeout, wpa_s, NULL); | |
1010 | } | |
1011 | ||
1012 | ||
1013 | void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable) | |
1014 | { | |
1015 | const u8 *ie; | |
1016 | struct wpa_bss *bss = wpa_s->current_bss; | |
1017 | struct wpa_ssid *ssid = wpa_s->current_ssid; | |
b6871ebb AN |
1018 | struct hostapd_hw_modes *hw_mode = NULL; |
1019 | int i; | |
c3701c66 RM |
1020 | |
1021 | eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL); | |
1022 | wpa_s->sme.sched_obss_scan = 0; | |
1023 | if (!enable) | |
1024 | return; | |
1025 | ||
368b1957 AK |
1026 | /* |
1027 | * Schedule OBSS scan if driver is using station SME in wpa_supplicant | |
1028 | * or it expects OBSS scan to be performed by wpa_supplicant. | |
1029 | */ | |
1030 | if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) || | |
1031 | (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) || | |
1032 | ssid == NULL || ssid->mode != IEEE80211_MODE_INFRA) | |
1033 | return; | |
c3701c66 | 1034 | |
b6871ebb AN |
1035 | if (!wpa_s->hw.modes) |
1036 | return; | |
1037 | ||
1038 | /* only HT caps in 11g mode are relevant */ | |
1039 | for (i = 0; i < wpa_s->hw.num_modes; i++) { | |
1040 | hw_mode = &wpa_s->hw.modes[i]; | |
1041 | if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G) | |
1042 | break; | |
1043 | } | |
1044 | ||
1045 | /* Driver does not support HT40 for 11g or doesn't have 11g. */ | |
1046 | if (i == wpa_s->hw.num_modes || !hw_mode || | |
1047 | !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) | |
1048 | return; | |
c3701c66 RM |
1049 | |
1050 | if (bss == NULL || bss->freq < 2400 || bss->freq > 2500) | |
1051 | return; /* Not associated on 2.4 GHz band */ | |
1052 | ||
1053 | /* Check whether AP supports HT40 */ | |
1054 | ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP); | |
1055 | if (!ie || ie[1] < 2 || | |
1056 | !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) | |
1057 | return; /* AP does not support HT40 */ | |
1058 | ||
1059 | ie = wpa_bss_get_ie(wpa_s->current_bss, | |
1060 | WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS); | |
1061 | if (!ie || ie[1] < 14) | |
1062 | return; /* AP does not request OBSS scans */ | |
1063 | ||
1064 | wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6); | |
1065 | if (wpa_s->sme.obss_scan_int < 10) { | |
1066 | wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u " | |
1067 | "replaced with the minimum 10 sec", | |
1068 | wpa_s->sme.obss_scan_int); | |
1069 | wpa_s->sme.obss_scan_int = 10; | |
1070 | } | |
1071 | wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec", | |
1072 | wpa_s->sme.obss_scan_int); | |
1073 | eloop_register_timeout(wpa_s->sme.obss_scan_int, 0, | |
1074 | sme_obss_scan_timeout, wpa_s, NULL); | |
e29853bb BG |
1075 | } |
1076 | ||
1077 | ||
7d878ca7 JM |
1078 | #ifdef CONFIG_IEEE80211W |
1079 | ||
1080 | static const unsigned int sa_query_max_timeout = 1000; | |
1081 | static const unsigned int sa_query_retry_timeout = 201; | |
1082 | ||
1083 | static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s) | |
1084 | { | |
1085 | u32 tu; | |
1086 | struct os_time now, passed; | |
1087 | os_get_time(&now); | |
1088 | os_time_sub(&now, &wpa_s->sme.sa_query_start, &passed); | |
1089 | tu = (passed.sec * 1000000 + passed.usec) / 1024; | |
1090 | if (sa_query_max_timeout < tu) { | |
f049052b | 1091 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out"); |
7d878ca7 JM |
1092 | sme_stop_sa_query(wpa_s); |
1093 | wpa_supplicant_deauthenticate( | |
1094 | wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID); | |
1095 | return 1; | |
1096 | } | |
1097 | ||
1098 | return 0; | |
1099 | } | |
1100 | ||
1101 | ||
1102 | static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s, | |
1103 | const u8 *trans_id) | |
1104 | { | |
1105 | u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN]; | |
f049052b BG |
1106 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to " |
1107 | MACSTR, MAC2STR(wpa_s->bssid)); | |
7d878ca7 JM |
1108 | wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID", |
1109 | trans_id, WLAN_SA_QUERY_TR_ID_LEN); | |
1110 | req[0] = WLAN_ACTION_SA_QUERY; | |
1111 | req[1] = WLAN_SA_QUERY_REQUEST; | |
1112 | os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN); | |
190b9062 | 1113 | if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid, |
7d878ca7 | 1114 | wpa_s->own_addr, wpa_s->bssid, |
b106173a | 1115 | req, sizeof(req), 0) < 0) |
f049052b BG |
1116 | wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query " |
1117 | "Request"); | |
7d878ca7 JM |
1118 | } |
1119 | ||
1120 | ||
1121 | static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx) | |
1122 | { | |
1123 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
1124 | unsigned int timeout, sec, usec; | |
1125 | u8 *trans_id, *nbuf; | |
1126 | ||
1127 | if (wpa_s->sme.sa_query_count > 0 && | |
1128 | sme_check_sa_query_timeout(wpa_s)) | |
1129 | return; | |
1130 | ||
067ffa26 JM |
1131 | nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id, |
1132 | wpa_s->sme.sa_query_count + 1, | |
1133 | WLAN_SA_QUERY_TR_ID_LEN); | |
7d878ca7 JM |
1134 | if (nbuf == NULL) |
1135 | return; | |
1136 | if (wpa_s->sme.sa_query_count == 0) { | |
1137 | /* Starting a new SA Query procedure */ | |
1138 | os_get_time(&wpa_s->sme.sa_query_start); | |
1139 | } | |
1140 | trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN; | |
1141 | wpa_s->sme.sa_query_trans_id = nbuf; | |
1142 | wpa_s->sme.sa_query_count++; | |
1143 | ||
1144 | os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN); | |
1145 | ||
1146 | timeout = sa_query_retry_timeout; | |
1147 | sec = ((timeout / 1000) * 1024) / 1000; | |
1148 | usec = (timeout % 1000) * 1024; | |
1149 | eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL); | |
1150 | ||
f049052b BG |
1151 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d", |
1152 | wpa_s->sme.sa_query_count); | |
7d878ca7 JM |
1153 | |
1154 | sme_send_sa_query_req(wpa_s, trans_id); | |
1155 | } | |
1156 | ||
1157 | ||
1158 | static void sme_start_sa_query(struct wpa_supplicant *wpa_s) | |
1159 | { | |
1160 | sme_sa_query_timer(wpa_s, NULL); | |
1161 | } | |
1162 | ||
1163 | ||
19df9b07 | 1164 | static void sme_stop_sa_query(struct wpa_supplicant *wpa_s) |
7d878ca7 JM |
1165 | { |
1166 | eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL); | |
1167 | os_free(wpa_s->sme.sa_query_trans_id); | |
1168 | wpa_s->sme.sa_query_trans_id = NULL; | |
1169 | wpa_s->sme.sa_query_count = 0; | |
1170 | } | |
1171 | ||
1172 | ||
1173 | void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa, | |
1174 | const u8 *da, u16 reason_code) | |
1175 | { | |
1176 | struct wpa_ssid *ssid; | |
1177 | ||
1178 | if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) | |
1179 | return; | |
1180 | if (wpa_s->wpa_state != WPA_COMPLETED) | |
1181 | return; | |
1182 | ssid = wpa_s->current_ssid; | |
62d49803 JM |
1183 | if (ssid == NULL || |
1184 | (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ? | |
1185 | wpa_s->conf->pmf : ssid->ieee80211w) == NO_MGMT_FRAME_PROTECTION) | |
7d878ca7 JM |
1186 | return; |
1187 | if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0) | |
1188 | return; | |
1189 | if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA && | |
1190 | reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA) | |
1191 | return; | |
1192 | if (wpa_s->sme.sa_query_count > 0) | |
1193 | return; | |
1194 | ||
f049052b BG |
1195 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - " |
1196 | "possible AP/STA state mismatch - trigger SA Query"); | |
7d878ca7 JM |
1197 | sme_start_sa_query(wpa_s); |
1198 | } | |
1199 | ||
1200 | ||
1201 | void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa, | |
1202 | const u8 *data, size_t len) | |
1203 | { | |
1204 | int i; | |
1205 | ||
1206 | if (wpa_s->sme.sa_query_trans_id == NULL || | |
1207 | len < 1 + WLAN_SA_QUERY_TR_ID_LEN || | |
1208 | data[0] != WLAN_SA_QUERY_RESPONSE) | |
1209 | return; | |
f049052b BG |
1210 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from " |
1211 | MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]); | |
7d878ca7 JM |
1212 | |
1213 | if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0) | |
1214 | return; | |
1215 | ||
1216 | for (i = 0; i < wpa_s->sme.sa_query_count; i++) { | |
1217 | if (os_memcmp(wpa_s->sme.sa_query_trans_id + | |
1218 | i * WLAN_SA_QUERY_TR_ID_LEN, | |
1219 | data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0) | |
1220 | break; | |
1221 | } | |
1222 | ||
1223 | if (i >= wpa_s->sme.sa_query_count) { | |
f049052b BG |
1224 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query " |
1225 | "transaction identifier found"); | |
7d878ca7 JM |
1226 | return; |
1227 | } | |
1228 | ||
f049052b BG |
1229 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received " |
1230 | "from " MACSTR, MAC2STR(sa)); | |
7d878ca7 JM |
1231 | sme_stop_sa_query(wpa_s); |
1232 | } | |
1233 | ||
1234 | #endif /* CONFIG_IEEE80211W */ |