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Commit | Line | Data |
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c2a04078 JM |
1 | /* |
2 | * wpa_supplicant - SME | |
71024cb2 | 3 | * Copyright (c) 2009-2010, 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" |
3acb5005 JM |
17 | #include "rsn_supp/wpa.h" |
18 | #include "rsn_supp/pmksa_cache.h" | |
c2a04078 JM |
19 | #include "config.h" |
20 | #include "wpa_supplicant_i.h" | |
2d5b792d | 21 | #include "driver_i.h" |
c2a04078 JM |
22 | #include "wpas_glue.h" |
23 | #include "wps_supplicant.h" | |
5f3a6aa0 | 24 | #include "p2p_supplicant.h" |
8bac466b | 25 | #include "notify.h" |
6fa81a3b | 26 | #include "bss.h" |
9ba9fa07 | 27 | #include "scan.h" |
c2a04078 | 28 | #include "sme.h" |
cb418324 | 29 | #include "hs20_supplicant.h" |
c2a04078 | 30 | |
e29853bb BG |
31 | #define SME_AUTH_TIMEOUT 5 |
32 | #define SME_ASSOC_TIMEOUT 5 | |
33 | ||
34 | static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx); | |
35 | static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx); | |
c3701c66 | 36 | static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx); |
e29853bb BG |
37 | #ifdef CONFIG_IEEE80211W |
38 | static void sme_stop_sa_query(struct wpa_supplicant *wpa_s); | |
39 | #endif /* CONFIG_IEEE80211W */ | |
40 | ||
41 | ||
c10347f2 JM |
42 | #ifdef CONFIG_SAE |
43 | ||
44 | static struct wpabuf * sme_auth_build_sae_commit(struct wpa_supplicant *wpa_s) | |
45 | { | |
46 | struct wpabuf *buf; | |
47 | ||
21af6d15 | 48 | buf = wpabuf_alloc(4 + 2); |
c10347f2 JM |
49 | if (buf == NULL) |
50 | return NULL; | |
51 | ||
52 | wpabuf_put_le16(buf, 1); /* Transaction seq# */ | |
53 | wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS); | |
21af6d15 JM |
54 | wpabuf_put_le16(buf, 19); /* Finite Cyclic Group */ |
55 | /* TODO: Anti-Clogging Token (if requested) */ | |
56 | /* TODO: Scalar */ | |
57 | /* TODO: Element */ | |
c10347f2 JM |
58 | |
59 | return buf; | |
60 | } | |
61 | ||
62 | ||
63 | static struct wpabuf * sme_auth_build_sae_confirm(struct wpa_supplicant *wpa_s) | |
64 | { | |
65 | struct wpabuf *buf; | |
66 | ||
21af6d15 | 67 | buf = wpabuf_alloc(4 + 2); |
c10347f2 JM |
68 | if (buf == NULL) |
69 | return NULL; | |
70 | ||
71 | wpabuf_put_le16(buf, 2); /* Transaction seq# */ | |
72 | wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS); | |
21af6d15 JM |
73 | wpabuf_put_le16(buf, wpa_s->sme.sae_send_confirm); |
74 | wpa_s->sme.sae_send_confirm++; | |
75 | /* TODO: Confirm */ | |
c10347f2 JM |
76 | |
77 | return buf; | |
78 | } | |
79 | ||
80 | #endif /* CONFIG_SAE */ | |
81 | ||
82 | ||
215ae884 JM |
83 | static void sme_send_authentication(struct wpa_supplicant *wpa_s, |
84 | struct wpa_bss *bss, struct wpa_ssid *ssid, | |
85 | int start) | |
c2a04078 JM |
86 | { |
87 | struct wpa_driver_auth_params params; | |
8bac466b | 88 | struct wpa_ssid *old_ssid; |
fdbe50ed | 89 | #ifdef CONFIG_IEEE80211R |
c2a04078 | 90 | const u8 *ie; |
fdbe50ed | 91 | #endif /* CONFIG_IEEE80211R */ |
c2a04078 JM |
92 | #ifdef CONFIG_IEEE80211R |
93 | const u8 *md = NULL; | |
94 | #endif /* CONFIG_IEEE80211R */ | |
8bac466b | 95 | int i, bssid_changed; |
c10347f2 | 96 | struct wpabuf *resp = NULL; |
e6955ba9 | 97 | u32 ext_capab; |
c2a04078 JM |
98 | |
99 | if (bss == NULL) { | |
f049052b BG |
100 | wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for " |
101 | "the network"); | |
c2a04078 JM |
102 | return; |
103 | } | |
104 | ||
8f770587 JM |
105 | wpa_s->current_bss = bss; |
106 | ||
c2a04078 JM |
107 | os_memset(¶ms, 0, sizeof(params)); |
108 | wpa_s->reassociate = 0; | |
109 | ||
110 | params.freq = bss->freq; | |
111 | params.bssid = bss->bssid; | |
6fa81a3b JM |
112 | params.ssid = bss->ssid; |
113 | params.ssid_len = bss->ssid_len; | |
2f4f73b1 | 114 | params.p2p = ssid->p2p_group; |
c2a04078 | 115 | |
62fa124c JM |
116 | if (wpa_s->sme.ssid_len != params.ssid_len || |
117 | os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0) | |
118 | wpa_s->sme.prev_bssid_set = 0; | |
119 | ||
c2a04078 JM |
120 | wpa_s->sme.freq = params.freq; |
121 | os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len); | |
122 | wpa_s->sme.ssid_len = params.ssid_len; | |
123 | ||
abd9fafa | 124 | params.auth_alg = WPA_AUTH_ALG_OPEN; |
c2a04078 JM |
125 | #ifdef IEEE8021X_EAPOL |
126 | if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) { | |
127 | if (ssid->leap) { | |
128 | if (ssid->non_leap == 0) | |
abd9fafa | 129 | params.auth_alg = WPA_AUTH_ALG_LEAP; |
c2a04078 | 130 | else |
abd9fafa | 131 | params.auth_alg |= WPA_AUTH_ALG_LEAP; |
c2a04078 JM |
132 | } |
133 | } | |
134 | #endif /* IEEE8021X_EAPOL */ | |
f049052b BG |
135 | wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x", |
136 | params.auth_alg); | |
c2a04078 | 137 | if (ssid->auth_alg) { |
abd9fafa | 138 | params.auth_alg = ssid->auth_alg; |
f049052b BG |
139 | wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: " |
140 | "0x%x", params.auth_alg); | |
c2a04078 | 141 | } |
c10347f2 JM |
142 | #ifdef CONFIG_SAE |
143 | if (wpa_key_mgmt_sae(ssid->key_mgmt)) { | |
144 | const u8 *rsn; | |
145 | struct wpa_ie_data ied; | |
146 | ||
147 | rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); | |
148 | if (rsn && | |
149 | wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0) { | |
150 | if (wpa_key_mgmt_sae(ied.key_mgmt)) { | |
151 | wpa_dbg(wpa_s, MSG_DEBUG, "Using SAE auth_alg"); | |
152 | params.auth_alg = WPA_AUTH_ALG_SAE; | |
153 | } | |
154 | } | |
155 | } | |
156 | #endif /* CONFIG_SAE */ | |
c2a04078 | 157 | |
a0b2f99b JM |
158 | for (i = 0; i < NUM_WEP_KEYS; i++) { |
159 | if (ssid->wep_key_len[i]) | |
160 | params.wep_key[i] = ssid->wep_key[i]; | |
161 | params.wep_key_len[i] = ssid->wep_key_len[i]; | |
162 | } | |
163 | params.wep_tx_keyidx = ssid->wep_tx_keyidx; | |
164 | ||
8bac466b | 165 | bssid_changed = !is_zero_ether_addr(wpa_s->bssid); |
c2a04078 JM |
166 | os_memset(wpa_s->bssid, 0, ETH_ALEN); |
167 | os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN); | |
8bac466b JM |
168 | if (bssid_changed) |
169 | wpas_notify_bssid_changed(wpa_s); | |
c2a04078 | 170 | |
f337f0e9 JM |
171 | if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) || |
172 | wpa_bss_get_ie(bss, WLAN_EID_RSN)) && | |
0bf927a0 | 173 | wpa_key_mgmt_wpa(ssid->key_mgmt)) { |
c2a04078 | 174 | int try_opportunistic; |
6e202021 JM |
175 | try_opportunistic = (ssid->proactive_key_caching < 0 ? |
176 | wpa_s->conf->okc : | |
177 | ssid->proactive_key_caching) && | |
c2a04078 JM |
178 | (ssid->proto & WPA_PROTO_RSN); |
179 | if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, | |
180 | wpa_s->current_ssid, | |
181 | try_opportunistic) == 0) | |
182 | eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1); | |
183 | wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie); | |
184 | if (wpa_supplicant_set_suites(wpa_s, bss, ssid, | |
185 | wpa_s->sme.assoc_req_ie, | |
186 | &wpa_s->sme.assoc_req_ie_len)) { | |
f049052b BG |
187 | wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA " |
188 | "key management and encryption suites"); | |
c2a04078 JM |
189 | return; |
190 | } | |
a3f7e518 JM |
191 | } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && |
192 | wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) { | |
193 | /* | |
194 | * Both WPA and non-WPA IEEE 802.1X enabled in configuration - | |
195 | * use non-WPA since the scan results did not indicate that the | |
196 | * AP is using WPA or WPA2. | |
197 | */ | |
198 | wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); | |
199 | wpa_s->sme.assoc_req_ie_len = 0; | |
0bf927a0 | 200 | } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) { |
c2a04078 JM |
201 | wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie); |
202 | if (wpa_supplicant_set_suites(wpa_s, NULL, ssid, | |
203 | wpa_s->sme.assoc_req_ie, | |
204 | &wpa_s->sme.assoc_req_ie_len)) { | |
f049052b BG |
205 | wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA " |
206 | "key management and encryption suites (no " | |
207 | "scan results)"); | |
c2a04078 JM |
208 | return; |
209 | } | |
210 | #ifdef CONFIG_WPS | |
211 | } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) { | |
212 | struct wpabuf *wps_ie; | |
213 | wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid)); | |
214 | if (wps_ie && wpabuf_len(wps_ie) <= | |
215 | sizeof(wpa_s->sme.assoc_req_ie)) { | |
216 | wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie); | |
217 | os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie), | |
218 | wpa_s->sme.assoc_req_ie_len); | |
219 | } else | |
220 | wpa_s->sme.assoc_req_ie_len = 0; | |
221 | wpabuf_free(wps_ie); | |
222 | wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); | |
223 | #endif /* CONFIG_WPS */ | |
224 | } else { | |
225 | wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); | |
226 | wpa_s->sme.assoc_req_ie_len = 0; | |
227 | } | |
228 | ||
229 | #ifdef CONFIG_IEEE80211R | |
6fa81a3b | 230 | ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN); |
c2a04078 JM |
231 | if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN) |
232 | md = ie + 2; | |
e7846b68 | 233 | wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0); |
c2a04078 JM |
234 | if (md) { |
235 | /* Prepare for the next transition */ | |
76b7981d | 236 | wpa_ft_prepare_auth_request(wpa_s->wpa, ie); |
c2a04078 JM |
237 | } |
238 | ||
0bf927a0 | 239 | if (md && wpa_key_mgmt_ft(ssid->key_mgmt)) { |
c2a04078 JM |
240 | if (wpa_s->sme.assoc_req_ie_len + 5 < |
241 | sizeof(wpa_s->sme.assoc_req_ie)) { | |
242 | struct rsn_mdie *mdie; | |
243 | u8 *pos = wpa_s->sme.assoc_req_ie + | |
244 | wpa_s->sme.assoc_req_ie_len; | |
245 | *pos++ = WLAN_EID_MOBILITY_DOMAIN; | |
246 | *pos++ = sizeof(*mdie); | |
247 | mdie = (struct rsn_mdie *) pos; | |
248 | os_memcpy(mdie->mobility_domain, md, | |
249 | MOBILITY_DOMAIN_ID_LEN); | |
f4ec630d | 250 | mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN]; |
c2a04078 JM |
251 | wpa_s->sme.assoc_req_ie_len += 5; |
252 | } | |
253 | ||
254 | if (wpa_s->sme.ft_used && | |
0d7b4409 JM |
255 | os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 && |
256 | wpa_sm_has_ptk(wpa_s->wpa)) { | |
f049052b BG |
257 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT " |
258 | "over-the-air"); | |
abd9fafa | 259 | params.auth_alg = WPA_AUTH_ALG_FT; |
c2a04078 JM |
260 | params.ie = wpa_s->sme.ft_ies; |
261 | params.ie_len = wpa_s->sme.ft_ies_len; | |
262 | } | |
263 | } | |
264 | #endif /* CONFIG_IEEE80211R */ | |
265 | ||
266 | #ifdef CONFIG_IEEE80211W | |
62d49803 JM |
267 | wpa_s->sme.mfp = ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ? |
268 | wpa_s->conf->pmf : ssid->ieee80211w; | |
269 | if (wpa_s->sme.mfp != NO_MGMT_FRAME_PROTECTION) { | |
6fa81a3b | 270 | const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); |
c2a04078 JM |
271 | struct wpa_ie_data _ie; |
272 | if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 && | |
273 | _ie.capabilities & | |
274 | (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) { | |
f049052b BG |
275 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports " |
276 | "MFP: require MFP"); | |
c2a04078 JM |
277 | wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED; |
278 | } | |
279 | } | |
280 | #endif /* CONFIG_IEEE80211W */ | |
281 | ||
5f3a6aa0 JM |
282 | #ifdef CONFIG_P2P |
283 | if (wpa_s->global->p2p) { | |
284 | u8 *pos; | |
285 | size_t len; | |
286 | int res; | |
5f3a6aa0 JM |
287 | pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len; |
288 | len = sizeof(wpa_s->sme.assoc_req_ie) - | |
289 | wpa_s->sme.assoc_req_ie_len; | |
ffad8858 JM |
290 | res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len, |
291 | ssid->p2p_group); | |
5f3a6aa0 JM |
292 | if (res >= 0) |
293 | wpa_s->sme.assoc_req_ie_len += res; | |
294 | } | |
295 | #endif /* CONFIG_P2P */ | |
296 | ||
cb418324 JM |
297 | #ifdef CONFIG_HS20 |
298 | if (wpa_s->conf->hs20) { | |
299 | struct wpabuf *hs20; | |
300 | hs20 = wpabuf_alloc(20); | |
301 | if (hs20) { | |
302 | wpas_hs20_add_indication(hs20); | |
303 | os_memcpy(wpa_s->sme.assoc_req_ie + | |
304 | wpa_s->sme.assoc_req_ie_len, | |
305 | wpabuf_head(hs20), wpabuf_len(hs20)); | |
306 | wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20); | |
307 | wpabuf_free(hs20); | |
308 | } | |
309 | } | |
310 | #endif /* CONFIG_HS20 */ | |
311 | ||
e6955ba9 | 312 | ext_capab = 0; |
92cbcf91 | 313 | #ifdef CONFIG_INTERWORKING |
e6955ba9 JM |
314 | if (wpa_s->conf->interworking) |
315 | ext_capab |= BIT(31); /* Interworking */ | |
316 | #endif /* CONFIG_INTERWORKING */ | |
317 | #ifdef CONFIG_WNM | |
318 | ext_capab |= BIT(17); /* WNM-Sleep Mode */ | |
319 | #endif /* CONFIG_WNM */ | |
320 | ||
321 | if (ext_capab) { | |
92cbcf91 JM |
322 | u8 *pos = wpa_s->sme.assoc_req_ie; |
323 | if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN) | |
324 | pos += 2 + pos[1]; | |
325 | os_memmove(pos + 6, pos, | |
326 | wpa_s->sme.assoc_req_ie_len - | |
327 | (pos - wpa_s->sme.assoc_req_ie)); | |
328 | wpa_s->sme.assoc_req_ie_len += 6; | |
329 | *pos++ = WLAN_EID_EXT_CAPAB; | |
330 | *pos++ = 4; | |
e6955ba9 | 331 | WPA_PUT_LE32(pos, ext_capab); |
92cbcf91 | 332 | } |
92cbcf91 | 333 | |
c10347f2 JM |
334 | #ifdef CONFIG_SAE |
335 | if (params.auth_alg == WPA_AUTH_ALG_SAE) { | |
336 | if (start) | |
337 | resp = sme_auth_build_sae_commit(wpa_s); | |
338 | else | |
339 | resp = sme_auth_build_sae_confirm(wpa_s); | |
340 | if (resp == NULL) | |
341 | return; | |
342 | params.sae_data = wpabuf_head(resp); | |
343 | params.sae_data_len = wpabuf_len(resp); | |
21af6d15 | 344 | wpa_s->sme.sae_state = start ? SME_SAE_COMMIT : SME_SAE_CONFIRM; |
c10347f2 JM |
345 | } |
346 | #endif /* CONFIG_SAE */ | |
347 | ||
a4cba8f1 | 348 | wpa_supplicant_cancel_sched_scan(wpa_s); |
c2a04078 JM |
349 | wpa_supplicant_cancel_scan(wpa_s); |
350 | ||
f049052b | 351 | wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR |
c2a04078 JM |
352 | " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid), |
353 | wpa_ssid_txt(params.ssid, params.ssid_len), params.freq); | |
354 | ||
355 | wpa_clear_keys(wpa_s, bss->bssid); | |
356 | wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING); | |
8bac466b | 357 | old_ssid = wpa_s->current_ssid; |
c2a04078 JM |
358 | wpa_s->current_ssid = ssid; |
359 | wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid); | |
360 | wpa_supplicant_initiate_eapol(wpa_s); | |
8bac466b JM |
361 | if (old_ssid != wpa_s->current_ssid) |
362 | wpas_notify_network_changed(wpa_s); | |
c2a04078 | 363 | |
62c72d72 | 364 | wpa_s->sme.auth_alg = params.auth_alg; |
c2a04078 | 365 | if (wpa_drv_authenticate(wpa_s, ¶ms) < 0) { |
f049052b | 366 | wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the " |
c2a04078 | 367 | "driver failed"); |
ed57c590 | 368 | wpas_connection_failed(wpa_s, bss->bssid); |
1193dc8f | 369 | wpa_supplicant_mark_disassoc(wpa_s); |
c10347f2 | 370 | wpabuf_free(resp); |
c2a04078 JM |
371 | return; |
372 | } | |
373 | ||
e29853bb BG |
374 | eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s, |
375 | NULL); | |
c2a04078 JM |
376 | |
377 | /* | |
378 | * Association will be started based on the authentication event from | |
379 | * the driver. | |
380 | */ | |
c10347f2 JM |
381 | |
382 | wpabuf_free(resp); | |
383 | } | |
384 | ||
385 | ||
386 | void sme_authenticate(struct wpa_supplicant *wpa_s, | |
387 | struct wpa_bss *bss, struct wpa_ssid *ssid) | |
388 | { | |
21af6d15 JM |
389 | wpa_s->sme.sae_state = SME_SAE_INIT; |
390 | wpa_s->sme.sae_send_confirm = 0; | |
c10347f2 | 391 | sme_send_authentication(wpa_s, bss, ssid, 1); |
c2a04078 JM |
392 | } |
393 | ||
394 | ||
c10347f2 | 395 | #ifdef CONFIG_SAE |
21af6d15 JM |
396 | |
397 | static int sme_sae_process_commit(struct wpa_supplicant *wpa_s, const u8 *data, | |
398 | size_t len) | |
399 | { | |
400 | /* Check Finite Cyclic Group */ | |
401 | if (len < 2) | |
402 | return -1; | |
403 | if (WPA_GET_LE16(data) != 19) { | |
404 | wpa_printf(MSG_DEBUG, "SAE: Unsupported Finite Cyclic Group %u", | |
405 | WPA_GET_LE16(data)); | |
406 | return -1; | |
407 | } | |
408 | ||
409 | /* TODO */ | |
410 | ||
411 | return 0; | |
412 | } | |
413 | ||
414 | ||
415 | static int sme_sae_process_confirm(struct wpa_supplicant *wpa_s, const u8 *data, | |
416 | size_t len) | |
417 | { | |
418 | u16 rc; | |
419 | ||
420 | if (len < 2) | |
421 | return -1; | |
422 | rc = WPA_GET_LE16(data); | |
423 | wpa_printf(MSG_DEBUG, "SAE: peer-send-confirm %u", rc); | |
424 | ||
425 | /* TODO */ | |
426 | return 0; | |
427 | } | |
428 | ||
429 | ||
c10347f2 JM |
430 | static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction, |
431 | u16 status_code, const u8 *data, size_t len) | |
432 | { | |
433 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u " | |
434 | "status code %u", auth_transaction, status_code); | |
435 | wpa_hexdump(MSG_DEBUG, "SME: SAE fields", data, len); | |
436 | ||
437 | if (status_code != WLAN_STATUS_SUCCESS) | |
438 | return -1; | |
439 | ||
440 | if (auth_transaction == 1) { | |
441 | wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit"); | |
442 | if (wpa_s->current_bss == NULL || | |
443 | wpa_s->current_ssid == NULL) | |
444 | return -1; | |
21af6d15 JM |
445 | if (wpa_s->sme.sae_state != SME_SAE_COMMIT) |
446 | return -1; | |
447 | if (sme_sae_process_commit(wpa_s, data, len) < 0) | |
448 | return -1; | |
c10347f2 JM |
449 | sme_send_authentication(wpa_s, wpa_s->current_bss, |
450 | wpa_s->current_ssid, 0); | |
451 | return 0; | |
452 | } else if (auth_transaction == 2) { | |
453 | wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm"); | |
21af6d15 JM |
454 | if (wpa_s->sme.sae_state != SME_SAE_CONFIRM) |
455 | return -1; | |
456 | if (sme_sae_process_confirm(wpa_s, data, len) < 0) | |
457 | return -1; | |
c10347f2 JM |
458 | return 1; |
459 | } | |
460 | ||
461 | return -1; | |
462 | } | |
463 | #endif /* CONFIG_SAE */ | |
464 | ||
465 | ||
c2a04078 JM |
466 | void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data) |
467 | { | |
c2a04078 JM |
468 | struct wpa_ssid *ssid = wpa_s->current_ssid; |
469 | ||
470 | if (ssid == NULL) { | |
f049052b BG |
471 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event " |
472 | "when network is not selected"); | |
c2a04078 JM |
473 | return; |
474 | } | |
475 | ||
476 | if (wpa_s->wpa_state != WPA_AUTHENTICATING) { | |
f049052b BG |
477 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event " |
478 | "when not in authenticating state"); | |
c2a04078 JM |
479 | return; |
480 | } | |
481 | ||
482 | if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) { | |
f049052b BG |
483 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with " |
484 | "unexpected peer " MACSTR, | |
485 | MAC2STR(data->auth.peer)); | |
c2a04078 JM |
486 | return; |
487 | } | |
488 | ||
f049052b | 489 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR |
c10347f2 | 490 | " auth_type=%d auth_transaction=%d status_code=%d", |
f049052b | 491 | MAC2STR(data->auth.peer), data->auth.auth_type, |
c10347f2 | 492 | data->auth.auth_transaction, data->auth.status_code); |
c2a04078 JM |
493 | wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs", |
494 | data->auth.ies, data->auth.ies_len); | |
495 | ||
e29853bb BG |
496 | eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); |
497 | ||
c10347f2 JM |
498 | #ifdef CONFIG_SAE |
499 | if (data->auth.auth_type == WLAN_AUTH_SAE) { | |
21af6d15 JM |
500 | int res; |
501 | res = sme_sae_auth(wpa_s, data->auth.auth_transaction, | |
502 | data->auth.status_code, data->auth.ies, | |
503 | data->auth.ies_len); | |
504 | if (res < 0) { | |
505 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); | |
506 | wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); | |
507 | ||
508 | } | |
509 | if (res != 1) | |
c10347f2 JM |
510 | return; |
511 | } | |
512 | #endif /* CONFIG_SAE */ | |
513 | ||
c2a04078 | 514 | if (data->auth.status_code != WLAN_STATUS_SUCCESS) { |
f049052b BG |
515 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication failed (status " |
516 | "code %d)", data->auth.status_code); | |
cb1583f6 SO |
517 | |
518 | if (data->auth.status_code != | |
519 | WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG || | |
520 | wpa_s->sme.auth_alg == data->auth.auth_type || | |
7e6646c7 | 521 | wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) { |
0fb337c1 | 522 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
c1c02342 | 523 | wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); |
cb1583f6 | 524 | return; |
7e6646c7 | 525 | } |
cb1583f6 SO |
526 | |
527 | switch (data->auth.auth_type) { | |
528 | case WLAN_AUTH_OPEN: | |
529 | wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED; | |
530 | ||
f049052b | 531 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth"); |
cb1583f6 SO |
532 | wpa_supplicant_associate(wpa_s, wpa_s->current_bss, |
533 | wpa_s->current_ssid); | |
534 | return; | |
535 | ||
536 | case WLAN_AUTH_SHARED_KEY: | |
537 | wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP; | |
538 | ||
f049052b | 539 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth"); |
cb1583f6 SO |
540 | wpa_supplicant_associate(wpa_s, wpa_s->current_bss, |
541 | wpa_s->current_ssid); | |
542 | return; | |
543 | ||
544 | default: | |
545 | return; | |
546 | } | |
c2a04078 JM |
547 | } |
548 | ||
549 | #ifdef CONFIG_IEEE80211R | |
550 | if (data->auth.auth_type == WLAN_AUTH_FT) { | |
551 | union wpa_event_data edata; | |
552 | os_memset(&edata, 0, sizeof(edata)); | |
553 | edata.ft_ies.ies = data->auth.ies; | |
554 | edata.ft_ies.ies_len = data->auth.ies_len; | |
555 | os_memcpy(edata.ft_ies.target_ap, data->auth.peer, ETH_ALEN); | |
556 | wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &edata); | |
557 | } | |
558 | #endif /* CONFIG_IEEE80211R */ | |
559 | ||
71024cb2 JM |
560 | sme_associate(wpa_s, ssid->mode, data->auth.peer, |
561 | data->auth.auth_type); | |
562 | } | |
563 | ||
564 | ||
565 | void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode, | |
566 | const u8 *bssid, u16 auth_type) | |
567 | { | |
568 | struct wpa_driver_associate_params params; | |
d9a27b04 | 569 | struct ieee802_11_elems elems; |
80e8a5ee BG |
570 | #ifdef CONFIG_HT_OVERRIDES |
571 | struct ieee80211_ht_capabilities htcaps; | |
572 | struct ieee80211_ht_capabilities htcaps_mask; | |
573 | #endif /* CONFIG_HT_OVERRIDES */ | |
71024cb2 | 574 | |
c2a04078 | 575 | os_memset(¶ms, 0, sizeof(params)); |
71024cb2 | 576 | params.bssid = bssid; |
c2a04078 JM |
577 | params.ssid = wpa_s->sme.ssid; |
578 | params.ssid_len = wpa_s->sme.ssid_len; | |
579 | params.freq = wpa_s->sme.freq; | |
1f6c0ab8 BS |
580 | params.bg_scan_period = wpa_s->current_ssid ? |
581 | wpa_s->current_ssid->bg_scan_period : -1; | |
c2a04078 JM |
582 | params.wpa_ie = wpa_s->sme.assoc_req_ie_len ? |
583 | wpa_s->sme.assoc_req_ie : NULL; | |
584 | params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len; | |
aca01605 JM |
585 | params.pairwise_suite = cipher_suite2driver(wpa_s->pairwise_cipher); |
586 | params.group_suite = cipher_suite2driver(wpa_s->group_cipher); | |
80e8a5ee BG |
587 | #ifdef CONFIG_HT_OVERRIDES |
588 | os_memset(&htcaps, 0, sizeof(htcaps)); | |
589 | os_memset(&htcaps_mask, 0, sizeof(htcaps_mask)); | |
590 | params.htcaps = (u8 *) &htcaps; | |
591 | params.htcaps_mask = (u8 *) &htcaps_mask; | |
592 | wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, ¶ms); | |
593 | #endif /* CONFIG_HT_OVERRIDES */ | |
c2a04078 | 594 | #ifdef CONFIG_IEEE80211R |
71024cb2 | 595 | if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) { |
c2a04078 JM |
596 | params.wpa_ie = wpa_s->sme.ft_ies; |
597 | params.wpa_ie_len = wpa_s->sme.ft_ies_len; | |
598 | } | |
599 | #endif /* CONFIG_IEEE80211R */ | |
71024cb2 | 600 | params.mode = mode; |
c2a04078 | 601 | params.mgmt_frame_protection = wpa_s->sme.mfp; |
62fa124c JM |
602 | if (wpa_s->sme.prev_bssid_set) |
603 | params.prev_bssid = wpa_s->sme.prev_bssid; | |
c2a04078 JM |
604 | |
605 | wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR | |
606 | " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid), | |
607 | params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "", | |
608 | params.freq); | |
609 | ||
610 | wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING); | |
611 | ||
9efc3f2a JM |
612 | if (params.wpa_ie == NULL || |
613 | ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0) | |
d9a27b04 | 614 | < 0) { |
f049052b | 615 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!"); |
d9a27b04 JM |
616 | os_memset(&elems, 0, sizeof(elems)); |
617 | } | |
64fa840a JM |
618 | if (elems.rsn_ie) { |
619 | params.wpa_proto = WPA_PROTO_RSN; | |
d9a27b04 JM |
620 | wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2, |
621 | elems.rsn_ie_len + 2); | |
64fa840a JM |
622 | } else if (elems.wpa_ie) { |
623 | params.wpa_proto = WPA_PROTO_WPA; | |
d9a27b04 JM |
624 | wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2, |
625 | elems.wpa_ie_len + 2); | |
64fa840a | 626 | } else |
d9a27b04 | 627 | wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0); |
ffad8858 | 628 | if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group) |
6e3f4b89 | 629 | params.p2p = 1; |
d9a27b04 | 630 | |
eea2fd9e JM |
631 | if (wpa_s->parent->set_sta_uapsd) |
632 | params.uapsd = wpa_s->parent->sta_uapsd; | |
633 | else | |
634 | params.uapsd = -1; | |
635 | ||
c2a04078 | 636 | if (wpa_drv_associate(wpa_s, ¶ms) < 0) { |
f049052b BG |
637 | wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the " |
638 | "driver failed"); | |
e5ad96b7 | 639 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
c1c02342 | 640 | wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); |
e5ad96b7 | 641 | os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); |
c2a04078 JM |
642 | return; |
643 | } | |
644 | ||
e29853bb BG |
645 | eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s, |
646 | NULL); | |
c2a04078 JM |
647 | } |
648 | ||
649 | ||
650 | int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md, | |
651 | const u8 *ies, size_t ies_len) | |
652 | { | |
653 | if (md == NULL || ies == NULL) { | |
f049052b | 654 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain"); |
c2a04078 JM |
655 | os_free(wpa_s->sme.ft_ies); |
656 | wpa_s->sme.ft_ies = NULL; | |
657 | wpa_s->sme.ft_ies_len = 0; | |
658 | wpa_s->sme.ft_used = 0; | |
659 | return 0; | |
660 | } | |
661 | ||
662 | os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN); | |
663 | wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len); | |
664 | os_free(wpa_s->sme.ft_ies); | |
665 | wpa_s->sme.ft_ies = os_malloc(ies_len); | |
666 | if (wpa_s->sme.ft_ies == NULL) | |
667 | return -1; | |
668 | os_memcpy(wpa_s->sme.ft_ies, ies, ies_len); | |
669 | wpa_s->sme.ft_ies_len = ies_len; | |
670 | return 0; | |
671 | } | |
efa46078 JM |
672 | |
673 | ||
e29853bb | 674 | static void sme_deauth(struct wpa_supplicant *wpa_s) |
efa46078 | 675 | { |
8bac466b JM |
676 | int bssid_changed; |
677 | ||
8bac466b | 678 | bssid_changed = !is_zero_ether_addr(wpa_s->bssid); |
76d11d3f | 679 | |
76d11d3f JM |
680 | if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid, |
681 | WLAN_REASON_DEAUTH_LEAVING) < 0) { | |
f049052b BG |
682 | wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver " |
683 | "failed"); | |
76d11d3f | 684 | } |
62fa124c | 685 | wpa_s->sme.prev_bssid_set = 0; |
76d11d3f | 686 | |
0fb337c1 | 687 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
76d11d3f | 688 | wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); |
efa46078 JM |
689 | os_memset(wpa_s->bssid, 0, ETH_ALEN); |
690 | os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); | |
8bac466b JM |
691 | if (bssid_changed) |
692 | wpas_notify_bssid_changed(wpa_s); | |
efa46078 | 693 | } |
da1fb17c JM |
694 | |
695 | ||
e29853bb BG |
696 | void sme_event_assoc_reject(struct wpa_supplicant *wpa_s, |
697 | union wpa_event_data *data) | |
698 | { | |
699 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: " | |
700 | "status code %d", MAC2STR(wpa_s->pending_bssid), | |
701 | data->assoc_reject.status_code); | |
702 | ||
703 | eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); | |
704 | ||
705 | /* | |
706 | * For now, unconditionally terminate the previous authentication. In | |
707 | * theory, this should not be needed, but mac80211 gets quite confused | |
708 | * if the authentication is left pending.. Some roaming cases might | |
709 | * benefit from using the previous authentication, so this could be | |
710 | * optimized in the future. | |
711 | */ | |
712 | sme_deauth(wpa_s); | |
713 | } | |
714 | ||
715 | ||
da1fb17c JM |
716 | void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s, |
717 | union wpa_event_data *data) | |
718 | { | |
f049052b | 719 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out"); |
0fb337c1 | 720 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
1193dc8f | 721 | wpa_supplicant_mark_disassoc(wpa_s); |
da1fb17c JM |
722 | } |
723 | ||
724 | ||
725 | void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s, | |
726 | union wpa_event_data *data) | |
727 | { | |
f049052b | 728 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out"); |
0fb337c1 | 729 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
da1fb17c | 730 | wpa_supplicant_mark_disassoc(wpa_s); |
da1fb17c | 731 | } |
a84ed99e JM |
732 | |
733 | ||
734 | void sme_event_disassoc(struct wpa_supplicant *wpa_s, | |
735 | union wpa_event_data *data) | |
736 | { | |
f049052b | 737 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received"); |
17fbb751 | 738 | if (wpa_s->sme.prev_bssid_set) { |
a84ed99e JM |
739 | /* |
740 | * cfg80211/mac80211 can get into somewhat confused state if | |
741 | * the AP only disassociates us and leaves us in authenticated | |
742 | * state. For now, force the state to be cleared to avoid | |
743 | * confusing errors if we try to associate with the AP again. | |
744 | */ | |
f049052b BG |
745 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear " |
746 | "driver state"); | |
7e26053a | 747 | wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid, |
a84ed99e JM |
748 | WLAN_REASON_DEAUTH_LEAVING); |
749 | } | |
750 | } | |
7d878ca7 JM |
751 | |
752 | ||
e29853bb BG |
753 | static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx) |
754 | { | |
755 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
756 | if (wpa_s->wpa_state == WPA_AUTHENTICATING) { | |
757 | wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout"); | |
758 | sme_deauth(wpa_s); | |
759 | } | |
760 | } | |
761 | ||
762 | ||
763 | static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx) | |
764 | { | |
765 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
766 | if (wpa_s->wpa_state == WPA_ASSOCIATING) { | |
767 | wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout"); | |
768 | sme_deauth(wpa_s); | |
769 | } | |
770 | } | |
771 | ||
772 | ||
773 | void sme_state_changed(struct wpa_supplicant *wpa_s) | |
774 | { | |
775 | /* Make sure timers are cleaned up appropriately. */ | |
776 | if (wpa_s->wpa_state != WPA_ASSOCIATING) | |
777 | eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); | |
778 | if (wpa_s->wpa_state != WPA_AUTHENTICATING) | |
779 | eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); | |
780 | } | |
781 | ||
782 | ||
783 | void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s, | |
784 | const u8 *prev_pending_bssid) | |
785 | { | |
786 | /* | |
787 | * mac80211-workaround to force deauth on failed auth cmd, | |
788 | * requires us to remain in authenticating state to allow the | |
789 | * second authentication attempt to be continued properly. | |
790 | */ | |
791 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication " | |
792 | "to proceed after disconnection event"); | |
793 | wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING); | |
794 | os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN); | |
795 | ||
796 | /* | |
797 | * Re-arm authentication timer in case auth fails for whatever reason. | |
798 | */ | |
799 | eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); | |
800 | eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s, | |
801 | NULL); | |
802 | } | |
803 | ||
804 | ||
805 | void sme_deinit(struct wpa_supplicant *wpa_s) | |
806 | { | |
807 | os_free(wpa_s->sme.ft_ies); | |
808 | wpa_s->sme.ft_ies = NULL; | |
809 | wpa_s->sme.ft_ies_len = 0; | |
810 | #ifdef CONFIG_IEEE80211W | |
811 | sme_stop_sa_query(wpa_s); | |
812 | #endif /* CONFIG_IEEE80211W */ | |
813 | ||
814 | eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); | |
815 | eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); | |
c3701c66 RM |
816 | eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL); |
817 | } | |
818 | ||
819 | ||
820 | static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s, | |
821 | const u8 *chan_list, u8 num_channels, | |
822 | u8 num_intol) | |
823 | { | |
824 | struct ieee80211_2040_bss_coex_ie *bc_ie; | |
825 | struct ieee80211_2040_intol_chan_report *ic_report; | |
826 | struct wpabuf *buf; | |
827 | ||
828 | wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR, | |
829 | MAC2STR(wpa_s->bssid)); | |
830 | ||
831 | buf = wpabuf_alloc(2 + /* action.category + action_code */ | |
832 | sizeof(struct ieee80211_2040_bss_coex_ie) + | |
833 | sizeof(struct ieee80211_2040_intol_chan_report) + | |
834 | num_channels); | |
835 | if (buf == NULL) | |
836 | return; | |
837 | ||
838 | wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC); | |
839 | wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX); | |
840 | ||
841 | bc_ie = wpabuf_put(buf, sizeof(*bc_ie)); | |
842 | bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE; | |
843 | bc_ie->length = 1; | |
844 | if (num_intol) | |
845 | bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ; | |
846 | ||
847 | if (num_channels > 0) { | |
848 | ic_report = wpabuf_put(buf, sizeof(*ic_report)); | |
849 | ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT; | |
850 | ic_report->length = num_channels + 1; | |
851 | ic_report->op_class = 0; | |
852 | os_memcpy(wpabuf_put(buf, num_channels), chan_list, | |
853 | num_channels); | |
854 | } | |
855 | ||
856 | if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid, | |
857 | wpa_s->own_addr, wpa_s->bssid, | |
858 | wpabuf_head(buf), wpabuf_len(buf), 0) < 0) { | |
859 | wpa_msg(wpa_s, MSG_INFO, | |
860 | "SME: Failed to send 20/40 BSS Coexistence frame"); | |
861 | } | |
862 | ||
863 | wpabuf_free(buf); | |
864 | } | |
865 | ||
866 | ||
867 | /** | |
868 | * enum wpas_band - Frequency band | |
869 | * @WPAS_BAND_2GHZ: 2.4 GHz ISM band | |
870 | * @WPAS_BAND_5GHZ: around 5 GHz band (4.9 - 5.7 GHz) | |
871 | */ | |
872 | enum wpas_band { | |
873 | WPAS_BAND_2GHZ, | |
874 | WPAS_BAND_5GHZ, | |
875 | WPAS_BAND_INVALID | |
876 | }; | |
877 | ||
878 | /** | |
879 | * freq_to_channel - Convert frequency into channel info | |
880 | * @channel: Buffer for returning channel number | |
881 | * Returns: Band (2 or 5 GHz) | |
882 | */ | |
883 | static enum wpas_band freq_to_channel(int freq, u8 *channel) | |
884 | { | |
885 | enum wpas_band band = (freq <= 2484) ? WPAS_BAND_2GHZ : WPAS_BAND_5GHZ; | |
886 | u8 chan = 0; | |
887 | ||
888 | if (freq >= 2412 && freq <= 2472) | |
889 | chan = (freq - 2407) / 5; | |
890 | else if (freq == 2484) | |
891 | chan = 14; | |
892 | else if (freq >= 5180 && freq <= 5805) | |
893 | chan = (freq - 5000) / 5; | |
894 | ||
895 | *channel = chan; | |
896 | return band; | |
897 | } | |
898 | ||
899 | ||
900 | int sme_proc_obss_scan(struct wpa_supplicant *wpa_s) | |
901 | { | |
902 | struct wpa_bss *bss; | |
903 | const u8 *ie; | |
904 | u16 ht_cap; | |
905 | u8 chan_list[P2P_MAX_CHANNELS], channel; | |
906 | u8 num_channels = 0, num_intol = 0, i; | |
907 | ||
908 | if (!wpa_s->sme.sched_obss_scan) | |
909 | return 0; | |
910 | ||
911 | wpa_s->sme.sched_obss_scan = 0; | |
912 | if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED) | |
913 | return 1; | |
914 | ||
915 | /* | |
916 | * Check whether AP uses regulatory triplet or channel triplet in | |
917 | * country info. Right now the operating class of the BSS channel | |
918 | * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12), | |
919 | * based on the assumption that operating class triplet is not used in | |
920 | * beacon frame. If the First Channel Number/Operating Extension | |
921 | * Identifier octet has a positive integer value of 201 or greater, | |
922 | * then its operating class triplet. | |
923 | * | |
924 | * TODO: If Supported Operating Classes element is present in beacon | |
925 | * frame, have to lookup operating class in Annex E and fill them in | |
926 | * 2040 coex frame. | |
927 | */ | |
928 | ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY); | |
929 | if (ie && (ie[1] >= 6) && (ie[5] >= 201)) | |
930 | return 1; | |
931 | ||
932 | os_memset(chan_list, 0, sizeof(chan_list)); | |
933 | ||
934 | dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { | |
935 | /* Skip other band bss */ | |
936 | if (freq_to_channel(bss->freq, &channel) != WPAS_BAND_2GHZ) | |
937 | continue; | |
938 | ||
939 | ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP); | |
940 | ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0; | |
941 | ||
942 | if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) { | |
943 | /* Check whether the channel is already considered */ | |
944 | for (i = 0; i < num_channels; i++) { | |
945 | if (channel == chan_list[i]) | |
946 | break; | |
947 | } | |
948 | if (i != num_channels) | |
949 | continue; | |
950 | ||
951 | if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT) | |
952 | num_intol++; | |
953 | ||
954 | chan_list[num_channels++] = channel; | |
955 | } | |
956 | } | |
957 | ||
958 | sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol); | |
959 | return 1; | |
960 | } | |
961 | ||
962 | ||
6434ad09 JM |
963 | static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes, |
964 | u16 num_modes, | |
965 | enum hostapd_hw_mode mode) | |
966 | { | |
967 | u16 i; | |
968 | ||
969 | for (i = 0; i < num_modes; i++) { | |
970 | if (modes[i].mode == mode) | |
971 | return &modes[i]; | |
972 | } | |
973 | ||
974 | return NULL; | |
975 | } | |
976 | ||
977 | ||
978 | static void wpa_setband_scan_freqs_list(struct wpa_supplicant *wpa_s, | |
979 | enum hostapd_hw_mode band, | |
980 | struct wpa_driver_scan_params *params) | |
981 | { | |
982 | /* Include only supported channels for the specified band */ | |
983 | struct hostapd_hw_modes *mode; | |
984 | int count, i; | |
985 | ||
986 | mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, band); | |
987 | if (mode == NULL) { | |
988 | /* No channels supported in this band - use empty list */ | |
989 | params->freqs = os_zalloc(sizeof(int)); | |
990 | return; | |
991 | } | |
992 | ||
f9884c09 | 993 | params->freqs = os_calloc(mode->num_channels + 1, sizeof(int)); |
6434ad09 JM |
994 | if (params->freqs == NULL) |
995 | return; | |
996 | for (count = 0, i = 0; i < mode->num_channels; i++) { | |
997 | if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED) | |
998 | continue; | |
999 | params->freqs[count++] = mode->channels[i].freq; | |
1000 | } | |
1001 | } | |
1002 | ||
1003 | ||
c3701c66 RM |
1004 | static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx) |
1005 | { | |
1006 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
1007 | struct wpa_driver_scan_params params; | |
1008 | ||
1009 | if (!wpa_s->current_bss) { | |
1010 | wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request"); | |
1011 | return; | |
1012 | } | |
1013 | ||
1014 | os_memset(¶ms, 0, sizeof(params)); | |
6434ad09 | 1015 | wpa_setband_scan_freqs_list(wpa_s, HOSTAPD_MODE_IEEE80211G, ¶ms); |
c3701c66 RM |
1016 | wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan"); |
1017 | ||
1018 | if (wpa_supplicant_trigger_scan(wpa_s, ¶ms)) | |
1019 | wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan"); | |
1020 | else | |
1021 | wpa_s->sme.sched_obss_scan = 1; | |
6434ad09 | 1022 | os_free(params.freqs); |
c3701c66 RM |
1023 | |
1024 | eloop_register_timeout(wpa_s->sme.obss_scan_int, 0, | |
1025 | sme_obss_scan_timeout, wpa_s, NULL); | |
1026 | } | |
1027 | ||
1028 | ||
1029 | void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable) | |
1030 | { | |
1031 | const u8 *ie; | |
1032 | struct wpa_bss *bss = wpa_s->current_bss; | |
1033 | struct wpa_ssid *ssid = wpa_s->current_ssid; | |
b6871ebb AN |
1034 | struct hostapd_hw_modes *hw_mode = NULL; |
1035 | int i; | |
c3701c66 RM |
1036 | |
1037 | eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL); | |
1038 | wpa_s->sme.sched_obss_scan = 0; | |
1039 | if (!enable) | |
1040 | return; | |
1041 | ||
368b1957 AK |
1042 | /* |
1043 | * Schedule OBSS scan if driver is using station SME in wpa_supplicant | |
1044 | * or it expects OBSS scan to be performed by wpa_supplicant. | |
1045 | */ | |
1046 | if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) || | |
1047 | (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) || | |
1048 | ssid == NULL || ssid->mode != IEEE80211_MODE_INFRA) | |
1049 | return; | |
c3701c66 | 1050 | |
b6871ebb AN |
1051 | if (!wpa_s->hw.modes) |
1052 | return; | |
1053 | ||
1054 | /* only HT caps in 11g mode are relevant */ | |
1055 | for (i = 0; i < wpa_s->hw.num_modes; i++) { | |
1056 | hw_mode = &wpa_s->hw.modes[i]; | |
1057 | if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G) | |
1058 | break; | |
1059 | } | |
1060 | ||
1061 | /* Driver does not support HT40 for 11g or doesn't have 11g. */ | |
1062 | if (i == wpa_s->hw.num_modes || !hw_mode || | |
1063 | !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) | |
1064 | return; | |
c3701c66 RM |
1065 | |
1066 | if (bss == NULL || bss->freq < 2400 || bss->freq > 2500) | |
1067 | return; /* Not associated on 2.4 GHz band */ | |
1068 | ||
1069 | /* Check whether AP supports HT40 */ | |
1070 | ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP); | |
1071 | if (!ie || ie[1] < 2 || | |
1072 | !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) | |
1073 | return; /* AP does not support HT40 */ | |
1074 | ||
1075 | ie = wpa_bss_get_ie(wpa_s->current_bss, | |
1076 | WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS); | |
1077 | if (!ie || ie[1] < 14) | |
1078 | return; /* AP does not request OBSS scans */ | |
1079 | ||
1080 | wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6); | |
1081 | if (wpa_s->sme.obss_scan_int < 10) { | |
1082 | wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u " | |
1083 | "replaced with the minimum 10 sec", | |
1084 | wpa_s->sme.obss_scan_int); | |
1085 | wpa_s->sme.obss_scan_int = 10; | |
1086 | } | |
1087 | wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec", | |
1088 | wpa_s->sme.obss_scan_int); | |
1089 | eloop_register_timeout(wpa_s->sme.obss_scan_int, 0, | |
1090 | sme_obss_scan_timeout, wpa_s, NULL); | |
e29853bb BG |
1091 | } |
1092 | ||
1093 | ||
7d878ca7 JM |
1094 | #ifdef CONFIG_IEEE80211W |
1095 | ||
1096 | static const unsigned int sa_query_max_timeout = 1000; | |
1097 | static const unsigned int sa_query_retry_timeout = 201; | |
1098 | ||
1099 | static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s) | |
1100 | { | |
1101 | u32 tu; | |
1102 | struct os_time now, passed; | |
1103 | os_get_time(&now); | |
1104 | os_time_sub(&now, &wpa_s->sme.sa_query_start, &passed); | |
1105 | tu = (passed.sec * 1000000 + passed.usec) / 1024; | |
1106 | if (sa_query_max_timeout < tu) { | |
f049052b | 1107 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out"); |
7d878ca7 JM |
1108 | sme_stop_sa_query(wpa_s); |
1109 | wpa_supplicant_deauthenticate( | |
1110 | wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID); | |
1111 | return 1; | |
1112 | } | |
1113 | ||
1114 | return 0; | |
1115 | } | |
1116 | ||
1117 | ||
1118 | static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s, | |
1119 | const u8 *trans_id) | |
1120 | { | |
1121 | u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN]; | |
f049052b BG |
1122 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to " |
1123 | MACSTR, MAC2STR(wpa_s->bssid)); | |
7d878ca7 JM |
1124 | wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID", |
1125 | trans_id, WLAN_SA_QUERY_TR_ID_LEN); | |
1126 | req[0] = WLAN_ACTION_SA_QUERY; | |
1127 | req[1] = WLAN_SA_QUERY_REQUEST; | |
1128 | os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN); | |
190b9062 | 1129 | if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid, |
7d878ca7 | 1130 | wpa_s->own_addr, wpa_s->bssid, |
b106173a | 1131 | req, sizeof(req), 0) < 0) |
f049052b BG |
1132 | wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query " |
1133 | "Request"); | |
7d878ca7 JM |
1134 | } |
1135 | ||
1136 | ||
1137 | static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx) | |
1138 | { | |
1139 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
1140 | unsigned int timeout, sec, usec; | |
1141 | u8 *trans_id, *nbuf; | |
1142 | ||
1143 | if (wpa_s->sme.sa_query_count > 0 && | |
1144 | sme_check_sa_query_timeout(wpa_s)) | |
1145 | return; | |
1146 | ||
067ffa26 JM |
1147 | nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id, |
1148 | wpa_s->sme.sa_query_count + 1, | |
1149 | WLAN_SA_QUERY_TR_ID_LEN); | |
7d878ca7 JM |
1150 | if (nbuf == NULL) |
1151 | return; | |
1152 | if (wpa_s->sme.sa_query_count == 0) { | |
1153 | /* Starting a new SA Query procedure */ | |
1154 | os_get_time(&wpa_s->sme.sa_query_start); | |
1155 | } | |
1156 | trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN; | |
1157 | wpa_s->sme.sa_query_trans_id = nbuf; | |
1158 | wpa_s->sme.sa_query_count++; | |
1159 | ||
1160 | os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN); | |
1161 | ||
1162 | timeout = sa_query_retry_timeout; | |
1163 | sec = ((timeout / 1000) * 1024) / 1000; | |
1164 | usec = (timeout % 1000) * 1024; | |
1165 | eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL); | |
1166 | ||
f049052b BG |
1167 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d", |
1168 | wpa_s->sme.sa_query_count); | |
7d878ca7 JM |
1169 | |
1170 | sme_send_sa_query_req(wpa_s, trans_id); | |
1171 | } | |
1172 | ||
1173 | ||
1174 | static void sme_start_sa_query(struct wpa_supplicant *wpa_s) | |
1175 | { | |
1176 | sme_sa_query_timer(wpa_s, NULL); | |
1177 | } | |
1178 | ||
1179 | ||
19df9b07 | 1180 | static void sme_stop_sa_query(struct wpa_supplicant *wpa_s) |
7d878ca7 JM |
1181 | { |
1182 | eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL); | |
1183 | os_free(wpa_s->sme.sa_query_trans_id); | |
1184 | wpa_s->sme.sa_query_trans_id = NULL; | |
1185 | wpa_s->sme.sa_query_count = 0; | |
1186 | } | |
1187 | ||
1188 | ||
1189 | void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa, | |
1190 | const u8 *da, u16 reason_code) | |
1191 | { | |
1192 | struct wpa_ssid *ssid; | |
1193 | ||
1194 | if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) | |
1195 | return; | |
1196 | if (wpa_s->wpa_state != WPA_COMPLETED) | |
1197 | return; | |
1198 | ssid = wpa_s->current_ssid; | |
62d49803 JM |
1199 | if (ssid == NULL || |
1200 | (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ? | |
1201 | wpa_s->conf->pmf : ssid->ieee80211w) == NO_MGMT_FRAME_PROTECTION) | |
7d878ca7 JM |
1202 | return; |
1203 | if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0) | |
1204 | return; | |
1205 | if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA && | |
1206 | reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA) | |
1207 | return; | |
1208 | if (wpa_s->sme.sa_query_count > 0) | |
1209 | return; | |
1210 | ||
f049052b BG |
1211 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - " |
1212 | "possible AP/STA state mismatch - trigger SA Query"); | |
7d878ca7 JM |
1213 | sme_start_sa_query(wpa_s); |
1214 | } | |
1215 | ||
1216 | ||
1217 | void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa, | |
1218 | const u8 *data, size_t len) | |
1219 | { | |
1220 | int i; | |
1221 | ||
1222 | if (wpa_s->sme.sa_query_trans_id == NULL || | |
1223 | len < 1 + WLAN_SA_QUERY_TR_ID_LEN || | |
1224 | data[0] != WLAN_SA_QUERY_RESPONSE) | |
1225 | return; | |
f049052b BG |
1226 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from " |
1227 | MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]); | |
7d878ca7 JM |
1228 | |
1229 | if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0) | |
1230 | return; | |
1231 | ||
1232 | for (i = 0; i < wpa_s->sme.sa_query_count; i++) { | |
1233 | if (os_memcmp(wpa_s->sme.sa_query_trans_id + | |
1234 | i * WLAN_SA_QUERY_TR_ID_LEN, | |
1235 | data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0) | |
1236 | break; | |
1237 | } | |
1238 | ||
1239 | if (i >= wpa_s->sme.sa_query_count) { | |
f049052b BG |
1240 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query " |
1241 | "transaction identifier found"); | |
7d878ca7 JM |
1242 | return; |
1243 | } | |
1244 | ||
f049052b BG |
1245 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received " |
1246 | "from " MACSTR, MAC2STR(sa)); | |
7d878ca7 JM |
1247 | sme_stop_sa_query(wpa_s); |
1248 | } | |
1249 | ||
1250 | #endif /* CONFIG_IEEE80211W */ |