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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 | ||
c2a04078 | 42 | void sme_authenticate(struct wpa_supplicant *wpa_s, |
6fa81a3b | 43 | struct wpa_bss *bss, struct wpa_ssid *ssid) |
c2a04078 JM |
44 | { |
45 | struct wpa_driver_auth_params params; | |
8bac466b | 46 | struct wpa_ssid *old_ssid; |
fdbe50ed | 47 | #ifdef CONFIG_IEEE80211R |
c2a04078 | 48 | const u8 *ie; |
fdbe50ed | 49 | #endif /* CONFIG_IEEE80211R */ |
c2a04078 JM |
50 | #ifdef CONFIG_IEEE80211R |
51 | const u8 *md = NULL; | |
52 | #endif /* CONFIG_IEEE80211R */ | |
8bac466b | 53 | int i, bssid_changed; |
c2a04078 JM |
54 | |
55 | if (bss == NULL) { | |
f049052b BG |
56 | wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for " |
57 | "the network"); | |
c2a04078 JM |
58 | return; |
59 | } | |
60 | ||
8f770587 JM |
61 | wpa_s->current_bss = bss; |
62 | ||
c2a04078 JM |
63 | os_memset(¶ms, 0, sizeof(params)); |
64 | wpa_s->reassociate = 0; | |
65 | ||
66 | params.freq = bss->freq; | |
67 | params.bssid = bss->bssid; | |
6fa81a3b JM |
68 | params.ssid = bss->ssid; |
69 | params.ssid_len = bss->ssid_len; | |
2f4f73b1 | 70 | params.p2p = ssid->p2p_group; |
c2a04078 | 71 | |
62fa124c JM |
72 | if (wpa_s->sme.ssid_len != params.ssid_len || |
73 | os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0) | |
74 | wpa_s->sme.prev_bssid_set = 0; | |
75 | ||
c2a04078 JM |
76 | wpa_s->sme.freq = params.freq; |
77 | os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len); | |
78 | wpa_s->sme.ssid_len = params.ssid_len; | |
79 | ||
abd9fafa | 80 | params.auth_alg = WPA_AUTH_ALG_OPEN; |
c2a04078 JM |
81 | #ifdef IEEE8021X_EAPOL |
82 | if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) { | |
83 | if (ssid->leap) { | |
84 | if (ssid->non_leap == 0) | |
abd9fafa | 85 | params.auth_alg = WPA_AUTH_ALG_LEAP; |
c2a04078 | 86 | else |
abd9fafa | 87 | params.auth_alg |= WPA_AUTH_ALG_LEAP; |
c2a04078 JM |
88 | } |
89 | } | |
90 | #endif /* IEEE8021X_EAPOL */ | |
f049052b BG |
91 | wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x", |
92 | params.auth_alg); | |
c2a04078 | 93 | if (ssid->auth_alg) { |
abd9fafa | 94 | params.auth_alg = ssid->auth_alg; |
f049052b BG |
95 | wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: " |
96 | "0x%x", params.auth_alg); | |
c2a04078 JM |
97 | } |
98 | ||
a0b2f99b JM |
99 | for (i = 0; i < NUM_WEP_KEYS; i++) { |
100 | if (ssid->wep_key_len[i]) | |
101 | params.wep_key[i] = ssid->wep_key[i]; | |
102 | params.wep_key_len[i] = ssid->wep_key_len[i]; | |
103 | } | |
104 | params.wep_tx_keyidx = ssid->wep_tx_keyidx; | |
105 | ||
8bac466b | 106 | bssid_changed = !is_zero_ether_addr(wpa_s->bssid); |
c2a04078 JM |
107 | os_memset(wpa_s->bssid, 0, ETH_ALEN); |
108 | os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN); | |
8bac466b JM |
109 | if (bssid_changed) |
110 | wpas_notify_bssid_changed(wpa_s); | |
c2a04078 | 111 | |
f337f0e9 JM |
112 | if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) || |
113 | wpa_bss_get_ie(bss, WLAN_EID_RSN)) && | |
0bf927a0 | 114 | wpa_key_mgmt_wpa(ssid->key_mgmt)) { |
c2a04078 JM |
115 | int try_opportunistic; |
116 | try_opportunistic = ssid->proactive_key_caching && | |
117 | (ssid->proto & WPA_PROTO_RSN); | |
118 | if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, | |
119 | wpa_s->current_ssid, | |
120 | try_opportunistic) == 0) | |
121 | eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1); | |
122 | wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie); | |
123 | if (wpa_supplicant_set_suites(wpa_s, bss, ssid, | |
124 | wpa_s->sme.assoc_req_ie, | |
125 | &wpa_s->sme.assoc_req_ie_len)) { | |
f049052b BG |
126 | wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA " |
127 | "key management and encryption suites"); | |
c2a04078 JM |
128 | return; |
129 | } | |
a3f7e518 JM |
130 | } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && |
131 | wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) { | |
132 | /* | |
133 | * Both WPA and non-WPA IEEE 802.1X enabled in configuration - | |
134 | * use non-WPA since the scan results did not indicate that the | |
135 | * AP is using WPA or WPA2. | |
136 | */ | |
137 | wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); | |
138 | wpa_s->sme.assoc_req_ie_len = 0; | |
0bf927a0 | 139 | } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) { |
c2a04078 JM |
140 | wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie); |
141 | if (wpa_supplicant_set_suites(wpa_s, NULL, ssid, | |
142 | wpa_s->sme.assoc_req_ie, | |
143 | &wpa_s->sme.assoc_req_ie_len)) { | |
f049052b BG |
144 | wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA " |
145 | "key management and encryption suites (no " | |
146 | "scan results)"); | |
c2a04078 JM |
147 | return; |
148 | } | |
149 | #ifdef CONFIG_WPS | |
150 | } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) { | |
151 | struct wpabuf *wps_ie; | |
152 | wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid)); | |
153 | if (wps_ie && wpabuf_len(wps_ie) <= | |
154 | sizeof(wpa_s->sme.assoc_req_ie)) { | |
155 | wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie); | |
156 | os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie), | |
157 | wpa_s->sme.assoc_req_ie_len); | |
158 | } else | |
159 | wpa_s->sme.assoc_req_ie_len = 0; | |
160 | wpabuf_free(wps_ie); | |
161 | wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); | |
162 | #endif /* CONFIG_WPS */ | |
163 | } else { | |
164 | wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); | |
165 | wpa_s->sme.assoc_req_ie_len = 0; | |
166 | } | |
167 | ||
168 | #ifdef CONFIG_IEEE80211R | |
6fa81a3b | 169 | ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN); |
c2a04078 JM |
170 | if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN) |
171 | md = ie + 2; | |
e7846b68 | 172 | wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0); |
c2a04078 JM |
173 | if (md) { |
174 | /* Prepare for the next transition */ | |
76b7981d | 175 | wpa_ft_prepare_auth_request(wpa_s->wpa, ie); |
c2a04078 JM |
176 | } |
177 | ||
0bf927a0 | 178 | if (md && wpa_key_mgmt_ft(ssid->key_mgmt)) { |
c2a04078 JM |
179 | if (wpa_s->sme.assoc_req_ie_len + 5 < |
180 | sizeof(wpa_s->sme.assoc_req_ie)) { | |
181 | struct rsn_mdie *mdie; | |
182 | u8 *pos = wpa_s->sme.assoc_req_ie + | |
183 | wpa_s->sme.assoc_req_ie_len; | |
184 | *pos++ = WLAN_EID_MOBILITY_DOMAIN; | |
185 | *pos++ = sizeof(*mdie); | |
186 | mdie = (struct rsn_mdie *) pos; | |
187 | os_memcpy(mdie->mobility_domain, md, | |
188 | MOBILITY_DOMAIN_ID_LEN); | |
f4ec630d | 189 | mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN]; |
c2a04078 JM |
190 | wpa_s->sme.assoc_req_ie_len += 5; |
191 | } | |
192 | ||
193 | if (wpa_s->sme.ft_used && | |
0d7b4409 JM |
194 | os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 && |
195 | wpa_sm_has_ptk(wpa_s->wpa)) { | |
f049052b BG |
196 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT " |
197 | "over-the-air"); | |
abd9fafa | 198 | params.auth_alg = WPA_AUTH_ALG_FT; |
c2a04078 JM |
199 | params.ie = wpa_s->sme.ft_ies; |
200 | params.ie_len = wpa_s->sme.ft_ies_len; | |
201 | } | |
202 | } | |
203 | #endif /* CONFIG_IEEE80211R */ | |
204 | ||
205 | #ifdef CONFIG_IEEE80211W | |
70f8cc8e | 206 | wpa_s->sme.mfp = ssid->ieee80211w; |
f337f0e9 | 207 | if (ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION) { |
6fa81a3b | 208 | const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); |
c2a04078 JM |
209 | struct wpa_ie_data _ie; |
210 | if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 && | |
211 | _ie.capabilities & | |
212 | (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) { | |
f049052b BG |
213 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports " |
214 | "MFP: require MFP"); | |
c2a04078 JM |
215 | wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED; |
216 | } | |
217 | } | |
218 | #endif /* CONFIG_IEEE80211W */ | |
219 | ||
5f3a6aa0 JM |
220 | #ifdef CONFIG_P2P |
221 | if (wpa_s->global->p2p) { | |
222 | u8 *pos; | |
223 | size_t len; | |
224 | int res; | |
5f3a6aa0 JM |
225 | pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len; |
226 | len = sizeof(wpa_s->sme.assoc_req_ie) - | |
227 | wpa_s->sme.assoc_req_ie_len; | |
ffad8858 JM |
228 | res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len, |
229 | ssid->p2p_group); | |
5f3a6aa0 JM |
230 | if (res >= 0) |
231 | wpa_s->sme.assoc_req_ie_len += res; | |
232 | } | |
233 | #endif /* CONFIG_P2P */ | |
234 | ||
cb418324 JM |
235 | #ifdef CONFIG_HS20 |
236 | if (wpa_s->conf->hs20) { | |
237 | struct wpabuf *hs20; | |
238 | hs20 = wpabuf_alloc(20); | |
239 | if (hs20) { | |
240 | wpas_hs20_add_indication(hs20); | |
241 | os_memcpy(wpa_s->sme.assoc_req_ie + | |
242 | wpa_s->sme.assoc_req_ie_len, | |
243 | wpabuf_head(hs20), wpabuf_len(hs20)); | |
244 | wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20); | |
245 | wpabuf_free(hs20); | |
246 | } | |
247 | } | |
248 | #endif /* CONFIG_HS20 */ | |
249 | ||
92cbcf91 JM |
250 | #ifdef CONFIG_INTERWORKING |
251 | if (wpa_s->conf->interworking) { | |
252 | u8 *pos = wpa_s->sme.assoc_req_ie; | |
253 | if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN) | |
254 | pos += 2 + pos[1]; | |
255 | os_memmove(pos + 6, pos, | |
256 | wpa_s->sme.assoc_req_ie_len - | |
257 | (pos - wpa_s->sme.assoc_req_ie)); | |
258 | wpa_s->sme.assoc_req_ie_len += 6; | |
259 | *pos++ = WLAN_EID_EXT_CAPAB; | |
260 | *pos++ = 4; | |
261 | *pos++ = 0x00; | |
262 | *pos++ = 0x00; | |
263 | *pos++ = 0x00; | |
264 | *pos++ = 0x80; /* Bit 31 - Interworking */ | |
265 | } | |
266 | #endif /* CONFIG_INTERWORKING */ | |
267 | ||
a4cba8f1 | 268 | wpa_supplicant_cancel_sched_scan(wpa_s); |
c2a04078 JM |
269 | wpa_supplicant_cancel_scan(wpa_s); |
270 | ||
f049052b | 271 | wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR |
c2a04078 JM |
272 | " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid), |
273 | wpa_ssid_txt(params.ssid, params.ssid_len), params.freq); | |
274 | ||
275 | wpa_clear_keys(wpa_s, bss->bssid); | |
276 | wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING); | |
8bac466b | 277 | old_ssid = wpa_s->current_ssid; |
c2a04078 JM |
278 | wpa_s->current_ssid = ssid; |
279 | wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid); | |
280 | wpa_supplicant_initiate_eapol(wpa_s); | |
8bac466b JM |
281 | if (old_ssid != wpa_s->current_ssid) |
282 | wpas_notify_network_changed(wpa_s); | |
c2a04078 | 283 | |
62c72d72 | 284 | wpa_s->sme.auth_alg = params.auth_alg; |
c2a04078 | 285 | if (wpa_drv_authenticate(wpa_s, ¶ms) < 0) { |
f049052b | 286 | wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the " |
c2a04078 | 287 | "driver failed"); |
ed57c590 | 288 | wpas_connection_failed(wpa_s, bss->bssid); |
1193dc8f | 289 | wpa_supplicant_mark_disassoc(wpa_s); |
c2a04078 JM |
290 | return; |
291 | } | |
292 | ||
e29853bb BG |
293 | eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s, |
294 | NULL); | |
c2a04078 JM |
295 | |
296 | /* | |
297 | * Association will be started based on the authentication event from | |
298 | * the driver. | |
299 | */ | |
300 | } | |
301 | ||
302 | ||
303 | void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data) | |
304 | { | |
c2a04078 JM |
305 | struct wpa_ssid *ssid = wpa_s->current_ssid; |
306 | ||
307 | if (ssid == NULL) { | |
f049052b BG |
308 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event " |
309 | "when network is not selected"); | |
c2a04078 JM |
310 | return; |
311 | } | |
312 | ||
313 | if (wpa_s->wpa_state != WPA_AUTHENTICATING) { | |
f049052b BG |
314 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event " |
315 | "when not in authenticating state"); | |
c2a04078 JM |
316 | return; |
317 | } | |
318 | ||
319 | if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) { | |
f049052b BG |
320 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with " |
321 | "unexpected peer " MACSTR, | |
322 | MAC2STR(data->auth.peer)); | |
c2a04078 JM |
323 | return; |
324 | } | |
325 | ||
f049052b BG |
326 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR |
327 | " auth_type=%d status_code=%d", | |
328 | MAC2STR(data->auth.peer), data->auth.auth_type, | |
329 | data->auth.status_code); | |
c2a04078 JM |
330 | wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs", |
331 | data->auth.ies, data->auth.ies_len); | |
332 | ||
e29853bb BG |
333 | eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); |
334 | ||
c2a04078 | 335 | if (data->auth.status_code != WLAN_STATUS_SUCCESS) { |
f049052b BG |
336 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication failed (status " |
337 | "code %d)", data->auth.status_code); | |
cb1583f6 SO |
338 | |
339 | if (data->auth.status_code != | |
340 | WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG || | |
341 | wpa_s->sme.auth_alg == data->auth.auth_type || | |
7e6646c7 | 342 | wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) { |
0fb337c1 | 343 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
c1c02342 | 344 | wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); |
cb1583f6 | 345 | return; |
7e6646c7 | 346 | } |
cb1583f6 SO |
347 | |
348 | switch (data->auth.auth_type) { | |
349 | case WLAN_AUTH_OPEN: | |
350 | wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED; | |
351 | ||
f049052b | 352 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth"); |
cb1583f6 SO |
353 | wpa_supplicant_associate(wpa_s, wpa_s->current_bss, |
354 | wpa_s->current_ssid); | |
355 | return; | |
356 | ||
357 | case WLAN_AUTH_SHARED_KEY: | |
358 | wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP; | |
359 | ||
f049052b | 360 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth"); |
cb1583f6 SO |
361 | wpa_supplicant_associate(wpa_s, wpa_s->current_bss, |
362 | wpa_s->current_ssid); | |
363 | return; | |
364 | ||
365 | default: | |
366 | return; | |
367 | } | |
c2a04078 JM |
368 | } |
369 | ||
370 | #ifdef CONFIG_IEEE80211R | |
371 | if (data->auth.auth_type == WLAN_AUTH_FT) { | |
372 | union wpa_event_data edata; | |
373 | os_memset(&edata, 0, sizeof(edata)); | |
374 | edata.ft_ies.ies = data->auth.ies; | |
375 | edata.ft_ies.ies_len = data->auth.ies_len; | |
376 | os_memcpy(edata.ft_ies.target_ap, data->auth.peer, ETH_ALEN); | |
377 | wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &edata); | |
378 | } | |
379 | #endif /* CONFIG_IEEE80211R */ | |
380 | ||
71024cb2 JM |
381 | sme_associate(wpa_s, ssid->mode, data->auth.peer, |
382 | data->auth.auth_type); | |
383 | } | |
384 | ||
385 | ||
386 | void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode, | |
387 | const u8 *bssid, u16 auth_type) | |
388 | { | |
389 | struct wpa_driver_associate_params params; | |
d9a27b04 | 390 | struct ieee802_11_elems elems; |
80e8a5ee BG |
391 | #ifdef CONFIG_HT_OVERRIDES |
392 | struct ieee80211_ht_capabilities htcaps; | |
393 | struct ieee80211_ht_capabilities htcaps_mask; | |
394 | #endif /* CONFIG_HT_OVERRIDES */ | |
71024cb2 | 395 | |
c2a04078 | 396 | os_memset(¶ms, 0, sizeof(params)); |
71024cb2 | 397 | params.bssid = bssid; |
c2a04078 JM |
398 | params.ssid = wpa_s->sme.ssid; |
399 | params.ssid_len = wpa_s->sme.ssid_len; | |
400 | params.freq = wpa_s->sme.freq; | |
1f6c0ab8 BS |
401 | params.bg_scan_period = wpa_s->current_ssid ? |
402 | wpa_s->current_ssid->bg_scan_period : -1; | |
c2a04078 JM |
403 | params.wpa_ie = wpa_s->sme.assoc_req_ie_len ? |
404 | wpa_s->sme.assoc_req_ie : NULL; | |
405 | params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len; | |
aca01605 JM |
406 | params.pairwise_suite = cipher_suite2driver(wpa_s->pairwise_cipher); |
407 | params.group_suite = cipher_suite2driver(wpa_s->group_cipher); | |
80e8a5ee BG |
408 | #ifdef CONFIG_HT_OVERRIDES |
409 | os_memset(&htcaps, 0, sizeof(htcaps)); | |
410 | os_memset(&htcaps_mask, 0, sizeof(htcaps_mask)); | |
411 | params.htcaps = (u8 *) &htcaps; | |
412 | params.htcaps_mask = (u8 *) &htcaps_mask; | |
413 | wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, ¶ms); | |
414 | #endif /* CONFIG_HT_OVERRIDES */ | |
c2a04078 | 415 | #ifdef CONFIG_IEEE80211R |
71024cb2 | 416 | if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) { |
c2a04078 JM |
417 | params.wpa_ie = wpa_s->sme.ft_ies; |
418 | params.wpa_ie_len = wpa_s->sme.ft_ies_len; | |
419 | } | |
420 | #endif /* CONFIG_IEEE80211R */ | |
71024cb2 | 421 | params.mode = mode; |
c2a04078 | 422 | params.mgmt_frame_protection = wpa_s->sme.mfp; |
62fa124c JM |
423 | if (wpa_s->sme.prev_bssid_set) |
424 | params.prev_bssid = wpa_s->sme.prev_bssid; | |
c2a04078 JM |
425 | |
426 | wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR | |
427 | " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid), | |
428 | params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "", | |
429 | params.freq); | |
430 | ||
431 | wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING); | |
432 | ||
9efc3f2a JM |
433 | if (params.wpa_ie == NULL || |
434 | ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0) | |
d9a27b04 | 435 | < 0) { |
f049052b | 436 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!"); |
d9a27b04 JM |
437 | os_memset(&elems, 0, sizeof(elems)); |
438 | } | |
64fa840a JM |
439 | if (elems.rsn_ie) { |
440 | params.wpa_proto = WPA_PROTO_RSN; | |
d9a27b04 JM |
441 | wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2, |
442 | elems.rsn_ie_len + 2); | |
64fa840a JM |
443 | } else if (elems.wpa_ie) { |
444 | params.wpa_proto = WPA_PROTO_WPA; | |
d9a27b04 JM |
445 | wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2, |
446 | elems.wpa_ie_len + 2); | |
64fa840a | 447 | } else |
d9a27b04 | 448 | wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0); |
ffad8858 | 449 | if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group) |
6e3f4b89 | 450 | params.p2p = 1; |
d9a27b04 | 451 | |
eea2fd9e JM |
452 | if (wpa_s->parent->set_sta_uapsd) |
453 | params.uapsd = wpa_s->parent->sta_uapsd; | |
454 | else | |
455 | params.uapsd = -1; | |
456 | ||
c2a04078 | 457 | if (wpa_drv_associate(wpa_s, ¶ms) < 0) { |
f049052b BG |
458 | wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the " |
459 | "driver failed"); | |
e5ad96b7 | 460 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
c1c02342 | 461 | wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); |
e5ad96b7 | 462 | os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); |
c2a04078 JM |
463 | return; |
464 | } | |
465 | ||
e29853bb BG |
466 | eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s, |
467 | NULL); | |
c2a04078 JM |
468 | } |
469 | ||
470 | ||
471 | int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md, | |
472 | const u8 *ies, size_t ies_len) | |
473 | { | |
474 | if (md == NULL || ies == NULL) { | |
f049052b | 475 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain"); |
c2a04078 JM |
476 | os_free(wpa_s->sme.ft_ies); |
477 | wpa_s->sme.ft_ies = NULL; | |
478 | wpa_s->sme.ft_ies_len = 0; | |
479 | wpa_s->sme.ft_used = 0; | |
480 | return 0; | |
481 | } | |
482 | ||
483 | os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN); | |
484 | wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len); | |
485 | os_free(wpa_s->sme.ft_ies); | |
486 | wpa_s->sme.ft_ies = os_malloc(ies_len); | |
487 | if (wpa_s->sme.ft_ies == NULL) | |
488 | return -1; | |
489 | os_memcpy(wpa_s->sme.ft_ies, ies, ies_len); | |
490 | wpa_s->sme.ft_ies_len = ies_len; | |
491 | return 0; | |
492 | } | |
efa46078 JM |
493 | |
494 | ||
e29853bb | 495 | static void sme_deauth(struct wpa_supplicant *wpa_s) |
efa46078 | 496 | { |
8bac466b JM |
497 | int bssid_changed; |
498 | ||
8bac466b | 499 | bssid_changed = !is_zero_ether_addr(wpa_s->bssid); |
76d11d3f | 500 | |
76d11d3f JM |
501 | if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid, |
502 | WLAN_REASON_DEAUTH_LEAVING) < 0) { | |
f049052b BG |
503 | wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver " |
504 | "failed"); | |
76d11d3f | 505 | } |
62fa124c | 506 | wpa_s->sme.prev_bssid_set = 0; |
76d11d3f | 507 | |
0fb337c1 | 508 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
76d11d3f | 509 | wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); |
efa46078 JM |
510 | os_memset(wpa_s->bssid, 0, ETH_ALEN); |
511 | os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); | |
8bac466b JM |
512 | if (bssid_changed) |
513 | wpas_notify_bssid_changed(wpa_s); | |
efa46078 | 514 | } |
da1fb17c JM |
515 | |
516 | ||
e29853bb BG |
517 | void sme_event_assoc_reject(struct wpa_supplicant *wpa_s, |
518 | union wpa_event_data *data) | |
519 | { | |
520 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: " | |
521 | "status code %d", MAC2STR(wpa_s->pending_bssid), | |
522 | data->assoc_reject.status_code); | |
523 | ||
524 | eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); | |
525 | ||
526 | /* | |
527 | * For now, unconditionally terminate the previous authentication. In | |
528 | * theory, this should not be needed, but mac80211 gets quite confused | |
529 | * if the authentication is left pending.. Some roaming cases might | |
530 | * benefit from using the previous authentication, so this could be | |
531 | * optimized in the future. | |
532 | */ | |
533 | sme_deauth(wpa_s); | |
534 | } | |
535 | ||
536 | ||
da1fb17c JM |
537 | void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s, |
538 | union wpa_event_data *data) | |
539 | { | |
f049052b | 540 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out"); |
0fb337c1 | 541 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
1193dc8f | 542 | wpa_supplicant_mark_disassoc(wpa_s); |
da1fb17c JM |
543 | } |
544 | ||
545 | ||
546 | void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s, | |
547 | union wpa_event_data *data) | |
548 | { | |
f049052b | 549 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out"); |
0fb337c1 | 550 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
da1fb17c | 551 | wpa_supplicant_mark_disassoc(wpa_s); |
da1fb17c | 552 | } |
a84ed99e JM |
553 | |
554 | ||
555 | void sme_event_disassoc(struct wpa_supplicant *wpa_s, | |
556 | union wpa_event_data *data) | |
557 | { | |
f049052b | 558 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received"); |
17fbb751 | 559 | if (wpa_s->sme.prev_bssid_set) { |
a84ed99e JM |
560 | /* |
561 | * cfg80211/mac80211 can get into somewhat confused state if | |
562 | * the AP only disassociates us and leaves us in authenticated | |
563 | * state. For now, force the state to be cleared to avoid | |
564 | * confusing errors if we try to associate with the AP again. | |
565 | */ | |
f049052b BG |
566 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear " |
567 | "driver state"); | |
7e26053a | 568 | wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid, |
a84ed99e JM |
569 | WLAN_REASON_DEAUTH_LEAVING); |
570 | } | |
571 | } | |
7d878ca7 JM |
572 | |
573 | ||
e29853bb BG |
574 | static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx) |
575 | { | |
576 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
577 | if (wpa_s->wpa_state == WPA_AUTHENTICATING) { | |
578 | wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout"); | |
579 | sme_deauth(wpa_s); | |
580 | } | |
581 | } | |
582 | ||
583 | ||
584 | static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx) | |
585 | { | |
586 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
587 | if (wpa_s->wpa_state == WPA_ASSOCIATING) { | |
588 | wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout"); | |
589 | sme_deauth(wpa_s); | |
590 | } | |
591 | } | |
592 | ||
593 | ||
594 | void sme_state_changed(struct wpa_supplicant *wpa_s) | |
595 | { | |
596 | /* Make sure timers are cleaned up appropriately. */ | |
597 | if (wpa_s->wpa_state != WPA_ASSOCIATING) | |
598 | eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); | |
599 | if (wpa_s->wpa_state != WPA_AUTHENTICATING) | |
600 | eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); | |
601 | } | |
602 | ||
603 | ||
604 | void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s, | |
605 | const u8 *prev_pending_bssid) | |
606 | { | |
607 | /* | |
608 | * mac80211-workaround to force deauth on failed auth cmd, | |
609 | * requires us to remain in authenticating state to allow the | |
610 | * second authentication attempt to be continued properly. | |
611 | */ | |
612 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication " | |
613 | "to proceed after disconnection event"); | |
614 | wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING); | |
615 | os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN); | |
616 | ||
617 | /* | |
618 | * Re-arm authentication timer in case auth fails for whatever reason. | |
619 | */ | |
620 | eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); | |
621 | eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s, | |
622 | NULL); | |
623 | } | |
624 | ||
625 | ||
626 | void sme_deinit(struct wpa_supplicant *wpa_s) | |
627 | { | |
628 | os_free(wpa_s->sme.ft_ies); | |
629 | wpa_s->sme.ft_ies = NULL; | |
630 | wpa_s->sme.ft_ies_len = 0; | |
631 | #ifdef CONFIG_IEEE80211W | |
632 | sme_stop_sa_query(wpa_s); | |
633 | #endif /* CONFIG_IEEE80211W */ | |
634 | ||
635 | eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); | |
636 | eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); | |
c3701c66 RM |
637 | eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL); |
638 | } | |
639 | ||
640 | ||
641 | static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s, | |
642 | const u8 *chan_list, u8 num_channels, | |
643 | u8 num_intol) | |
644 | { | |
645 | struct ieee80211_2040_bss_coex_ie *bc_ie; | |
646 | struct ieee80211_2040_intol_chan_report *ic_report; | |
647 | struct wpabuf *buf; | |
648 | ||
649 | wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR, | |
650 | MAC2STR(wpa_s->bssid)); | |
651 | ||
652 | buf = wpabuf_alloc(2 + /* action.category + action_code */ | |
653 | sizeof(struct ieee80211_2040_bss_coex_ie) + | |
654 | sizeof(struct ieee80211_2040_intol_chan_report) + | |
655 | num_channels); | |
656 | if (buf == NULL) | |
657 | return; | |
658 | ||
659 | wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC); | |
660 | wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX); | |
661 | ||
662 | bc_ie = wpabuf_put(buf, sizeof(*bc_ie)); | |
663 | bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE; | |
664 | bc_ie->length = 1; | |
665 | if (num_intol) | |
666 | bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ; | |
667 | ||
668 | if (num_channels > 0) { | |
669 | ic_report = wpabuf_put(buf, sizeof(*ic_report)); | |
670 | ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT; | |
671 | ic_report->length = num_channels + 1; | |
672 | ic_report->op_class = 0; | |
673 | os_memcpy(wpabuf_put(buf, num_channels), chan_list, | |
674 | num_channels); | |
675 | } | |
676 | ||
677 | if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid, | |
678 | wpa_s->own_addr, wpa_s->bssid, | |
679 | wpabuf_head(buf), wpabuf_len(buf), 0) < 0) { | |
680 | wpa_msg(wpa_s, MSG_INFO, | |
681 | "SME: Failed to send 20/40 BSS Coexistence frame"); | |
682 | } | |
683 | ||
684 | wpabuf_free(buf); | |
685 | } | |
686 | ||
687 | ||
688 | /** | |
689 | * enum wpas_band - Frequency band | |
690 | * @WPAS_BAND_2GHZ: 2.4 GHz ISM band | |
691 | * @WPAS_BAND_5GHZ: around 5 GHz band (4.9 - 5.7 GHz) | |
692 | */ | |
693 | enum wpas_band { | |
694 | WPAS_BAND_2GHZ, | |
695 | WPAS_BAND_5GHZ, | |
696 | WPAS_BAND_INVALID | |
697 | }; | |
698 | ||
699 | /** | |
700 | * freq_to_channel - Convert frequency into channel info | |
701 | * @channel: Buffer for returning channel number | |
702 | * Returns: Band (2 or 5 GHz) | |
703 | */ | |
704 | static enum wpas_band freq_to_channel(int freq, u8 *channel) | |
705 | { | |
706 | enum wpas_band band = (freq <= 2484) ? WPAS_BAND_2GHZ : WPAS_BAND_5GHZ; | |
707 | u8 chan = 0; | |
708 | ||
709 | if (freq >= 2412 && freq <= 2472) | |
710 | chan = (freq - 2407) / 5; | |
711 | else if (freq == 2484) | |
712 | chan = 14; | |
713 | else if (freq >= 5180 && freq <= 5805) | |
714 | chan = (freq - 5000) / 5; | |
715 | ||
716 | *channel = chan; | |
717 | return band; | |
718 | } | |
719 | ||
720 | ||
721 | int sme_proc_obss_scan(struct wpa_supplicant *wpa_s) | |
722 | { | |
723 | struct wpa_bss *bss; | |
724 | const u8 *ie; | |
725 | u16 ht_cap; | |
726 | u8 chan_list[P2P_MAX_CHANNELS], channel; | |
727 | u8 num_channels = 0, num_intol = 0, i; | |
728 | ||
729 | if (!wpa_s->sme.sched_obss_scan) | |
730 | return 0; | |
731 | ||
732 | wpa_s->sme.sched_obss_scan = 0; | |
733 | if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED) | |
734 | return 1; | |
735 | ||
736 | /* | |
737 | * Check whether AP uses regulatory triplet or channel triplet in | |
738 | * country info. Right now the operating class of the BSS channel | |
739 | * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12), | |
740 | * based on the assumption that operating class triplet is not used in | |
741 | * beacon frame. If the First Channel Number/Operating Extension | |
742 | * Identifier octet has a positive integer value of 201 or greater, | |
743 | * then its operating class triplet. | |
744 | * | |
745 | * TODO: If Supported Operating Classes element is present in beacon | |
746 | * frame, have to lookup operating class in Annex E and fill them in | |
747 | * 2040 coex frame. | |
748 | */ | |
749 | ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY); | |
750 | if (ie && (ie[1] >= 6) && (ie[5] >= 201)) | |
751 | return 1; | |
752 | ||
753 | os_memset(chan_list, 0, sizeof(chan_list)); | |
754 | ||
755 | dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { | |
756 | /* Skip other band bss */ | |
757 | if (freq_to_channel(bss->freq, &channel) != WPAS_BAND_2GHZ) | |
758 | continue; | |
759 | ||
760 | ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP); | |
761 | ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0; | |
762 | ||
763 | if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) { | |
764 | /* Check whether the channel is already considered */ | |
765 | for (i = 0; i < num_channels; i++) { | |
766 | if (channel == chan_list[i]) | |
767 | break; | |
768 | } | |
769 | if (i != num_channels) | |
770 | continue; | |
771 | ||
772 | if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT) | |
773 | num_intol++; | |
774 | ||
775 | chan_list[num_channels++] = channel; | |
776 | } | |
777 | } | |
778 | ||
779 | sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol); | |
780 | return 1; | |
781 | } | |
782 | ||
783 | ||
6434ad09 JM |
784 | static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes, |
785 | u16 num_modes, | |
786 | enum hostapd_hw_mode mode) | |
787 | { | |
788 | u16 i; | |
789 | ||
790 | for (i = 0; i < num_modes; i++) { | |
791 | if (modes[i].mode == mode) | |
792 | return &modes[i]; | |
793 | } | |
794 | ||
795 | return NULL; | |
796 | } | |
797 | ||
798 | ||
799 | static void wpa_setband_scan_freqs_list(struct wpa_supplicant *wpa_s, | |
800 | enum hostapd_hw_mode band, | |
801 | struct wpa_driver_scan_params *params) | |
802 | { | |
803 | /* Include only supported channels for the specified band */ | |
804 | struct hostapd_hw_modes *mode; | |
805 | int count, i; | |
806 | ||
807 | mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, band); | |
808 | if (mode == NULL) { | |
809 | /* No channels supported in this band - use empty list */ | |
810 | params->freqs = os_zalloc(sizeof(int)); | |
811 | return; | |
812 | } | |
813 | ||
f9884c09 | 814 | params->freqs = os_calloc(mode->num_channels + 1, sizeof(int)); |
6434ad09 JM |
815 | if (params->freqs == NULL) |
816 | return; | |
817 | for (count = 0, i = 0; i < mode->num_channels; i++) { | |
818 | if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED) | |
819 | continue; | |
820 | params->freqs[count++] = mode->channels[i].freq; | |
821 | } | |
822 | } | |
823 | ||
824 | ||
c3701c66 RM |
825 | static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx) |
826 | { | |
827 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
828 | struct wpa_driver_scan_params params; | |
829 | ||
830 | if (!wpa_s->current_bss) { | |
831 | wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request"); | |
832 | return; | |
833 | } | |
834 | ||
835 | os_memset(¶ms, 0, sizeof(params)); | |
6434ad09 | 836 | wpa_setband_scan_freqs_list(wpa_s, HOSTAPD_MODE_IEEE80211G, ¶ms); |
c3701c66 RM |
837 | wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan"); |
838 | ||
839 | if (wpa_supplicant_trigger_scan(wpa_s, ¶ms)) | |
840 | wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan"); | |
841 | else | |
842 | wpa_s->sme.sched_obss_scan = 1; | |
6434ad09 | 843 | os_free(params.freqs); |
c3701c66 RM |
844 | |
845 | eloop_register_timeout(wpa_s->sme.obss_scan_int, 0, | |
846 | sme_obss_scan_timeout, wpa_s, NULL); | |
847 | } | |
848 | ||
849 | ||
850 | void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable) | |
851 | { | |
852 | const u8 *ie; | |
853 | struct wpa_bss *bss = wpa_s->current_bss; | |
854 | struct wpa_ssid *ssid = wpa_s->current_ssid; | |
b6871ebb AN |
855 | struct hostapd_hw_modes *hw_mode = NULL; |
856 | int i; | |
c3701c66 RM |
857 | |
858 | eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL); | |
859 | wpa_s->sme.sched_obss_scan = 0; | |
860 | if (!enable) | |
861 | return; | |
862 | ||
863 | if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) || ssid == NULL || | |
864 | ssid->mode != IEEE80211_MODE_INFRA) | |
865 | return; /* Not using station SME in wpa_supplicant */ | |
866 | ||
b6871ebb AN |
867 | if (!wpa_s->hw.modes) |
868 | return; | |
869 | ||
870 | /* only HT caps in 11g mode are relevant */ | |
871 | for (i = 0; i < wpa_s->hw.num_modes; i++) { | |
872 | hw_mode = &wpa_s->hw.modes[i]; | |
873 | if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G) | |
874 | break; | |
875 | } | |
876 | ||
877 | /* Driver does not support HT40 for 11g or doesn't have 11g. */ | |
878 | if (i == wpa_s->hw.num_modes || !hw_mode || | |
879 | !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) | |
880 | return; | |
c3701c66 RM |
881 | |
882 | if (bss == NULL || bss->freq < 2400 || bss->freq > 2500) | |
883 | return; /* Not associated on 2.4 GHz band */ | |
884 | ||
885 | /* Check whether AP supports HT40 */ | |
886 | ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP); | |
887 | if (!ie || ie[1] < 2 || | |
888 | !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) | |
889 | return; /* AP does not support HT40 */ | |
890 | ||
891 | ie = wpa_bss_get_ie(wpa_s->current_bss, | |
892 | WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS); | |
893 | if (!ie || ie[1] < 14) | |
894 | return; /* AP does not request OBSS scans */ | |
895 | ||
896 | wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6); | |
897 | if (wpa_s->sme.obss_scan_int < 10) { | |
898 | wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u " | |
899 | "replaced with the minimum 10 sec", | |
900 | wpa_s->sme.obss_scan_int); | |
901 | wpa_s->sme.obss_scan_int = 10; | |
902 | } | |
903 | wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec", | |
904 | wpa_s->sme.obss_scan_int); | |
905 | eloop_register_timeout(wpa_s->sme.obss_scan_int, 0, | |
906 | sme_obss_scan_timeout, wpa_s, NULL); | |
e29853bb BG |
907 | } |
908 | ||
909 | ||
7d878ca7 JM |
910 | #ifdef CONFIG_IEEE80211W |
911 | ||
912 | static const unsigned int sa_query_max_timeout = 1000; | |
913 | static const unsigned int sa_query_retry_timeout = 201; | |
914 | ||
915 | static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s) | |
916 | { | |
917 | u32 tu; | |
918 | struct os_time now, passed; | |
919 | os_get_time(&now); | |
920 | os_time_sub(&now, &wpa_s->sme.sa_query_start, &passed); | |
921 | tu = (passed.sec * 1000000 + passed.usec) / 1024; | |
922 | if (sa_query_max_timeout < tu) { | |
f049052b | 923 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out"); |
7d878ca7 JM |
924 | sme_stop_sa_query(wpa_s); |
925 | wpa_supplicant_deauthenticate( | |
926 | wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID); | |
927 | return 1; | |
928 | } | |
929 | ||
930 | return 0; | |
931 | } | |
932 | ||
933 | ||
934 | static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s, | |
935 | const u8 *trans_id) | |
936 | { | |
937 | u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN]; | |
f049052b BG |
938 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to " |
939 | MACSTR, MAC2STR(wpa_s->bssid)); | |
7d878ca7 JM |
940 | wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID", |
941 | trans_id, WLAN_SA_QUERY_TR_ID_LEN); | |
942 | req[0] = WLAN_ACTION_SA_QUERY; | |
943 | req[1] = WLAN_SA_QUERY_REQUEST; | |
944 | os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN); | |
190b9062 | 945 | if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid, |
7d878ca7 | 946 | wpa_s->own_addr, wpa_s->bssid, |
b106173a | 947 | req, sizeof(req), 0) < 0) |
f049052b BG |
948 | wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query " |
949 | "Request"); | |
7d878ca7 JM |
950 | } |
951 | ||
952 | ||
953 | static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx) | |
954 | { | |
955 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
956 | unsigned int timeout, sec, usec; | |
957 | u8 *trans_id, *nbuf; | |
958 | ||
959 | if (wpa_s->sme.sa_query_count > 0 && | |
960 | sme_check_sa_query_timeout(wpa_s)) | |
961 | return; | |
962 | ||
067ffa26 JM |
963 | nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id, |
964 | wpa_s->sme.sa_query_count + 1, | |
965 | WLAN_SA_QUERY_TR_ID_LEN); | |
7d878ca7 JM |
966 | if (nbuf == NULL) |
967 | return; | |
968 | if (wpa_s->sme.sa_query_count == 0) { | |
969 | /* Starting a new SA Query procedure */ | |
970 | os_get_time(&wpa_s->sme.sa_query_start); | |
971 | } | |
972 | trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN; | |
973 | wpa_s->sme.sa_query_trans_id = nbuf; | |
974 | wpa_s->sme.sa_query_count++; | |
975 | ||
976 | os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN); | |
977 | ||
978 | timeout = sa_query_retry_timeout; | |
979 | sec = ((timeout / 1000) * 1024) / 1000; | |
980 | usec = (timeout % 1000) * 1024; | |
981 | eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL); | |
982 | ||
f049052b BG |
983 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d", |
984 | wpa_s->sme.sa_query_count); | |
7d878ca7 JM |
985 | |
986 | sme_send_sa_query_req(wpa_s, trans_id); | |
987 | } | |
988 | ||
989 | ||
990 | static void sme_start_sa_query(struct wpa_supplicant *wpa_s) | |
991 | { | |
992 | sme_sa_query_timer(wpa_s, NULL); | |
993 | } | |
994 | ||
995 | ||
19df9b07 | 996 | static void sme_stop_sa_query(struct wpa_supplicant *wpa_s) |
7d878ca7 JM |
997 | { |
998 | eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL); | |
999 | os_free(wpa_s->sme.sa_query_trans_id); | |
1000 | wpa_s->sme.sa_query_trans_id = NULL; | |
1001 | wpa_s->sme.sa_query_count = 0; | |
1002 | } | |
1003 | ||
1004 | ||
1005 | void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa, | |
1006 | const u8 *da, u16 reason_code) | |
1007 | { | |
1008 | struct wpa_ssid *ssid; | |
1009 | ||
1010 | if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) | |
1011 | return; | |
1012 | if (wpa_s->wpa_state != WPA_COMPLETED) | |
1013 | return; | |
1014 | ssid = wpa_s->current_ssid; | |
1015 | if (ssid == NULL || ssid->ieee80211w == 0) | |
1016 | return; | |
1017 | if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0) | |
1018 | return; | |
1019 | if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA && | |
1020 | reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA) | |
1021 | return; | |
1022 | if (wpa_s->sme.sa_query_count > 0) | |
1023 | return; | |
1024 | ||
f049052b BG |
1025 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - " |
1026 | "possible AP/STA state mismatch - trigger SA Query"); | |
7d878ca7 JM |
1027 | sme_start_sa_query(wpa_s); |
1028 | } | |
1029 | ||
1030 | ||
1031 | void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa, | |
1032 | const u8 *data, size_t len) | |
1033 | { | |
1034 | int i; | |
1035 | ||
1036 | if (wpa_s->sme.sa_query_trans_id == NULL || | |
1037 | len < 1 + WLAN_SA_QUERY_TR_ID_LEN || | |
1038 | data[0] != WLAN_SA_QUERY_RESPONSE) | |
1039 | return; | |
f049052b BG |
1040 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from " |
1041 | MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]); | |
7d878ca7 JM |
1042 | |
1043 | if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0) | |
1044 | return; | |
1045 | ||
1046 | for (i = 0; i < wpa_s->sme.sa_query_count; i++) { | |
1047 | if (os_memcmp(wpa_s->sme.sa_query_trans_id + | |
1048 | i * WLAN_SA_QUERY_TR_ID_LEN, | |
1049 | data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0) | |
1050 | break; | |
1051 | } | |
1052 | ||
1053 | if (i >= wpa_s->sme.sa_query_count) { | |
f049052b BG |
1054 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query " |
1055 | "transaction identifier found"); | |
7d878ca7 JM |
1056 | return; |
1057 | } | |
1058 | ||
f049052b BG |
1059 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received " |
1060 | "from " MACSTR, MAC2STR(sa)); | |
7d878ca7 JM |
1061 | sme_stop_sa_query(wpa_s); |
1062 | } | |
1063 | ||
1064 | #endif /* CONFIG_IEEE80211W */ |