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Commit | Line | Data |
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6fc6879b JM |
1 | /* |
2 | * WPA Supplicant - Scanning | |
dd43aaa5 | 3 | * Copyright (c) 2003-2014, Jouni Malinen <j@w1.fi> |
6fc6879b | 4 | * |
0f3d578e JM |
5 | * This software may be distributed under the terms of the BSD license. |
6 | * See README for more details. | |
6fc6879b JM |
7 | */ |
8 | ||
9ba9fa07 | 9 | #include "utils/includes.h" |
6fc6879b | 10 | |
9ba9fa07 JM |
11 | #include "utils/common.h" |
12 | #include "utils/eloop.h" | |
13 | #include "common/ieee802_11_defs.h" | |
66fe0f70 | 14 | #include "common/wpa_ctrl.h" |
6fc6879b JM |
15 | #include "config.h" |
16 | #include "wpa_supplicant_i.h" | |
2d5b792d | 17 | #include "driver_i.h" |
b01c18a8 | 18 | #include "wps_supplicant.h" |
0e65037c JM |
19 | #include "p2p_supplicant.h" |
20 | #include "p2p/p2p.h" | |
c923b8a5 | 21 | #include "hs20_supplicant.h" |
8bac466b | 22 | #include "notify.h" |
9ba9fa07 JM |
23 | #include "bss.h" |
24 | #include "scan.h" | |
fbca4c89 | 25 | #include "mesh.h" |
6fc6879b JM |
26 | |
27 | ||
28 | static void wpa_supplicant_gen_assoc_event(struct wpa_supplicant *wpa_s) | |
29 | { | |
30 | struct wpa_ssid *ssid; | |
31 | union wpa_event_data data; | |
32 | ||
33 | ssid = wpa_supplicant_get_ssid(wpa_s); | |
34 | if (ssid == NULL) | |
35 | return; | |
36 | ||
8bac466b | 37 | if (wpa_s->current_ssid == NULL) { |
6fc6879b | 38 | wpa_s->current_ssid = ssid; |
8bac466b JM |
39 | if (wpa_s->current_ssid != NULL) |
40 | wpas_notify_network_changed(wpa_s); | |
41 | } | |
6fc6879b | 42 | wpa_supplicant_initiate_eapol(wpa_s); |
f049052b BG |
43 | wpa_dbg(wpa_s, MSG_DEBUG, "Already associated with a configured " |
44 | "network - generating associated event"); | |
6fc6879b JM |
45 | os_memset(&data, 0, sizeof(data)); |
46 | wpa_supplicant_event(wpa_s, EVENT_ASSOC, &data); | |
47 | } | |
48 | ||
49 | ||
ad08c363 | 50 | #ifdef CONFIG_WPS |
5f738a21 | 51 | static int wpas_wps_in_use(struct wpa_supplicant *wpa_s, |
f90c86d4 | 52 | enum wps_request_type *req_type) |
ad08c363 JM |
53 | { |
54 | struct wpa_ssid *ssid; | |
55 | int wps = 0; | |
ad08c363 | 56 | |
5f738a21 | 57 | for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { |
ad08c363 JM |
58 | if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS)) |
59 | continue; | |
60 | ||
61 | wps = 1; | |
b01c18a8 | 62 | *req_type = wpas_wps_get_req_type(ssid); |
ad08c363 JM |
63 | if (!ssid->eap.phase1) |
64 | continue; | |
65 | ||
ad08c363 JM |
66 | if (os_strstr(ssid->eap.phase1, "pbc=1")) |
67 | return 2; | |
68 | } | |
69 | ||
5f738a21 | 70 | #ifdef CONFIG_P2P |
7a808c7e JM |
71 | if (!wpa_s->global->p2p_disabled && wpa_s->global->p2p && |
72 | !wpa_s->conf->p2p_disabled) { | |
b21ff9cb JM |
73 | wpa_s->wps->dev.p2p = 1; |
74 | if (!wps) { | |
75 | wps = 1; | |
76 | *req_type = WPS_REQ_ENROLLEE_INFO; | |
77 | } | |
5f738a21 LC |
78 | } |
79 | #endif /* CONFIG_P2P */ | |
80 | ||
ad08c363 JM |
81 | return wps; |
82 | } | |
83 | #endif /* CONFIG_WPS */ | |
84 | ||
e76baaac | 85 | |
2c09af30 JM |
86 | /** |
87 | * wpa_supplicant_enabled_networks - Check whether there are enabled networks | |
88 | * @wpa_s: Pointer to wpa_supplicant data | |
89 | * Returns: 0 if no networks are enabled, >0 if networks are enabled | |
90 | * | |
91 | * This function is used to figure out whether any networks (or Interworking | |
92 | * with enabled credentials and auto_interworking) are present in the current | |
93 | * configuration. | |
94 | */ | |
349493bd | 95 | int wpa_supplicant_enabled_networks(struct wpa_supplicant *wpa_s) |
e76baaac | 96 | { |
349493bd | 97 | struct wpa_ssid *ssid = wpa_s->conf->ssid; |
d4534bde | 98 | int count = 0, disabled = 0; |
44b9ea5b JM |
99 | |
100 | if (wpa_s->p2p_mgmt) | |
101 | return 0; /* no normal network profiles on p2p_mgmt interface */ | |
102 | ||
e76baaac | 103 | while (ssid) { |
349493bd | 104 | if (!wpas_network_disabled(wpa_s, ssid)) |
5471c343 | 105 | count++; |
d4534bde JM |
106 | else |
107 | disabled++; | |
e76baaac JM |
108 | ssid = ssid->next; |
109 | } | |
4d5bda5f JM |
110 | if (wpa_s->conf->cred && wpa_s->conf->interworking && |
111 | wpa_s->conf->auto_interworking) | |
112 | count++; | |
d4534bde JM |
113 | if (count == 0 && disabled > 0) { |
114 | wpa_dbg(wpa_s, MSG_DEBUG, "No enabled networks (%d disabled " | |
115 | "networks)", disabled); | |
116 | } | |
5471c343 | 117 | return count; |
e76baaac JM |
118 | } |
119 | ||
120 | ||
121 | static void wpa_supplicant_assoc_try(struct wpa_supplicant *wpa_s, | |
122 | struct wpa_ssid *ssid) | |
123 | { | |
124 | while (ssid) { | |
349493bd | 125 | if (!wpas_network_disabled(wpa_s, ssid)) |
e76baaac JM |
126 | break; |
127 | ssid = ssid->next; | |
128 | } | |
129 | ||
130 | /* ap_scan=2 mode - try to associate with each SSID. */ | |
131 | if (ssid == NULL) { | |
f049052b BG |
132 | wpa_dbg(wpa_s, MSG_DEBUG, "wpa_supplicant_assoc_try: Reached " |
133 | "end of scan list - go back to beginning"); | |
ba2a573c | 134 | wpa_s->prev_scan_ssid = WILDCARD_SSID_SCAN; |
e76baaac JM |
135 | wpa_supplicant_req_scan(wpa_s, 0, 0); |
136 | return; | |
137 | } | |
138 | if (ssid->next) { | |
139 | /* Continue from the next SSID on the next attempt. */ | |
140 | wpa_s->prev_scan_ssid = ssid; | |
141 | } else { | |
142 | /* Start from the beginning of the SSID list. */ | |
ba2a573c | 143 | wpa_s->prev_scan_ssid = WILDCARD_SSID_SCAN; |
e76baaac JM |
144 | } |
145 | wpa_supplicant_associate(wpa_s, NULL, ssid); | |
146 | } | |
147 | ||
148 | ||
d12a51b5 | 149 | static void wpas_trigger_scan_cb(struct wpa_radio_work *work, int deinit) |
60b94c98 | 150 | { |
d12a51b5 JM |
151 | struct wpa_supplicant *wpa_s = work->wpa_s; |
152 | struct wpa_driver_scan_params *params = work->ctx; | |
60b94c98 JM |
153 | int ret; |
154 | ||
d12a51b5 | 155 | if (deinit) { |
b3253ebb AO |
156 | if (!work->started) { |
157 | wpa_scan_free_params(params); | |
158 | return; | |
159 | } | |
160 | wpa_supplicant_notify_scanning(wpa_s, 0); | |
161 | wpas_notify_scan_done(wpa_s, 0); | |
162 | wpa_s->scan_work = NULL; | |
d12a51b5 JM |
163 | return; |
164 | } | |
165 | ||
c267753b JM |
166 | if (wpas_update_random_addr_disassoc(wpa_s) < 0) { |
167 | wpa_msg(wpa_s, MSG_INFO, | |
168 | "Failed to assign random MAC address for a scan"); | |
169 | radio_work_done(work); | |
170 | return; | |
171 | } | |
172 | ||
60b94c98 JM |
173 | wpa_supplicant_notify_scanning(wpa_s, 1); |
174 | ||
2dbe63ad JM |
175 | if (wpa_s->clear_driver_scan_cache) { |
176 | wpa_printf(MSG_DEBUG, | |
177 | "Request driver to clear scan cache due to local BSS flush"); | |
949938aa | 178 | params->only_new_results = 1; |
2dbe63ad | 179 | } |
17fbb751 | 180 | ret = wpa_drv_scan(wpa_s, params); |
d12a51b5 JM |
181 | wpa_scan_free_params(params); |
182 | work->ctx = NULL; | |
60b94c98 | 183 | if (ret) { |
2d9c99e3 JM |
184 | int retry = wpa_s->last_scan_req != MANUAL_SCAN_REQ; |
185 | ||
186 | if (wpa_s->disconnected) | |
187 | retry = 0; | |
188 | ||
60b94c98 JM |
189 | wpa_supplicant_notify_scanning(wpa_s, 0); |
190 | wpas_notify_scan_done(wpa_s, 0); | |
2d9c99e3 JM |
191 | if (wpa_s->wpa_state == WPA_SCANNING) |
192 | wpa_supplicant_set_state(wpa_s, | |
193 | wpa_s->scan_prev_wpa_state); | |
194 | wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SCAN_FAILED "ret=%d%s", | |
195 | ret, retry ? " retry=1" : ""); | |
d12a51b5 | 196 | radio_work_done(work); |
2d9c99e3 JM |
197 | |
198 | if (retry) { | |
199 | /* Restore scan_req since we will try to scan again */ | |
200 | wpa_s->scan_req = wpa_s->last_scan_req; | |
201 | wpa_supplicant_req_scan(wpa_s, 1, 0); | |
202 | } | |
d12a51b5 | 203 | return; |
0b7a25c0 | 204 | } |
60b94c98 | 205 | |
d12a51b5 JM |
206 | os_get_reltime(&wpa_s->scan_trigger_time); |
207 | wpa_s->scan_runs++; | |
208 | wpa_s->normal_scans++; | |
209 | wpa_s->own_scan_requested = 1; | |
210 | wpa_s->clear_driver_scan_cache = 0; | |
211 | wpa_s->scan_work = work; | |
212 | } | |
213 | ||
214 | ||
215 | /** | |
216 | * wpa_supplicant_trigger_scan - Request driver to start a scan | |
217 | * @wpa_s: Pointer to wpa_supplicant data | |
218 | * @params: Scan parameters | |
219 | * Returns: 0 on success, -1 on failure | |
220 | */ | |
221 | int wpa_supplicant_trigger_scan(struct wpa_supplicant *wpa_s, | |
222 | struct wpa_driver_scan_params *params) | |
223 | { | |
224 | struct wpa_driver_scan_params *ctx; | |
225 | ||
226 | if (wpa_s->scan_work) { | |
227 | wpa_dbg(wpa_s, MSG_INFO, "Reject scan trigger since one is already pending"); | |
228 | return -1; | |
229 | } | |
230 | ||
231 | ctx = wpa_scan_clone_params(params); | |
232 | if (ctx == NULL) | |
233 | return -1; | |
234 | ||
235 | if (radio_add_work(wpa_s, 0, "scan", 0, wpas_trigger_scan_cb, ctx) < 0) | |
236 | { | |
237 | wpa_scan_free_params(ctx); | |
238 | return -1; | |
239 | } | |
240 | ||
241 | return 0; | |
60b94c98 JM |
242 | } |
243 | ||
244 | ||
6a90053c LC |
245 | static void |
246 | wpa_supplicant_delayed_sched_scan_timeout(void *eloop_ctx, void *timeout_ctx) | |
247 | { | |
248 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
249 | ||
250 | wpa_dbg(wpa_s, MSG_DEBUG, "Starting delayed sched scan"); | |
251 | ||
252 | if (wpa_supplicant_req_sched_scan(wpa_s)) | |
253 | wpa_supplicant_req_scan(wpa_s, 0, 0); | |
254 | } | |
255 | ||
256 | ||
cbdf3507 LC |
257 | static void |
258 | wpa_supplicant_sched_scan_timeout(void *eloop_ctx, void *timeout_ctx) | |
259 | { | |
260 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
261 | ||
262 | wpa_dbg(wpa_s, MSG_DEBUG, "Sched scan timeout - stopping it"); | |
263 | ||
264 | wpa_s->sched_scan_timed_out = 1; | |
265 | wpa_supplicant_cancel_sched_scan(wpa_s); | |
266 | } | |
267 | ||
268 | ||
f86d282f JJ |
269 | int wpa_supplicant_start_sched_scan(struct wpa_supplicant *wpa_s, |
270 | struct wpa_driver_scan_params *params, | |
271 | int interval) | |
cbdf3507 LC |
272 | { |
273 | int ret; | |
274 | ||
cbdf3507 LC |
275 | wpa_supplicant_notify_scanning(wpa_s, 1); |
276 | ret = wpa_drv_sched_scan(wpa_s, params, interval * 1000); | |
277 | if (ret) | |
278 | wpa_supplicant_notify_scanning(wpa_s, 0); | |
279 | else | |
280 | wpa_s->sched_scanning = 1; | |
281 | ||
282 | return ret; | |
283 | } | |
284 | ||
285 | ||
f86d282f | 286 | int wpa_supplicant_stop_sched_scan(struct wpa_supplicant *wpa_s) |
cbdf3507 LC |
287 | { |
288 | int ret; | |
289 | ||
290 | ret = wpa_drv_stop_sched_scan(wpa_s); | |
291 | if (ret) { | |
292 | wpa_dbg(wpa_s, MSG_DEBUG, "stopping sched_scan failed!"); | |
293 | /* TODO: what to do if stopping fails? */ | |
294 | return -1; | |
295 | } | |
296 | ||
297 | return ret; | |
298 | } | |
299 | ||
300 | ||
3812464c JM |
301 | static struct wpa_driver_scan_filter * |
302 | wpa_supplicant_build_filter_ssids(struct wpa_config *conf, size_t *num_ssids) | |
303 | { | |
304 | struct wpa_driver_scan_filter *ssids; | |
305 | struct wpa_ssid *ssid; | |
306 | size_t count; | |
307 | ||
308 | *num_ssids = 0; | |
309 | if (!conf->filter_ssids) | |
310 | return NULL; | |
311 | ||
312 | for (count = 0, ssid = conf->ssid; ssid; ssid = ssid->next) { | |
313 | if (ssid->ssid && ssid->ssid_len) | |
314 | count++; | |
315 | } | |
316 | if (count == 0) | |
317 | return NULL; | |
faebdeaa | 318 | ssids = os_calloc(count, sizeof(struct wpa_driver_scan_filter)); |
3812464c JM |
319 | if (ssids == NULL) |
320 | return NULL; | |
321 | ||
322 | for (ssid = conf->ssid; ssid; ssid = ssid->next) { | |
323 | if (!ssid->ssid || !ssid->ssid_len) | |
324 | continue; | |
325 | os_memcpy(ssids[*num_ssids].ssid, ssid->ssid, ssid->ssid_len); | |
326 | ssids[*num_ssids].ssid_len = ssid->ssid_len; | |
327 | (*num_ssids)++; | |
328 | } | |
329 | ||
330 | return ssids; | |
331 | } | |
332 | ||
333 | ||
5f738a21 LC |
334 | static void wpa_supplicant_optimize_freqs( |
335 | struct wpa_supplicant *wpa_s, struct wpa_driver_scan_params *params) | |
336 | { | |
337 | #ifdef CONFIG_P2P | |
338 | if (params->freqs == NULL && wpa_s->p2p_in_provisioning && | |
339 | wpa_s->go_params) { | |
340 | /* Optimize provisioning state scan based on GO information */ | |
341 | if (wpa_s->p2p_in_provisioning < 5 && | |
342 | wpa_s->go_params->freq > 0) { | |
343 | wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Scan only GO " | |
344 | "preferred frequency %d MHz", | |
345 | wpa_s->go_params->freq); | |
faebdeaa | 346 | params->freqs = os_calloc(2, sizeof(int)); |
5f738a21 LC |
347 | if (params->freqs) |
348 | params->freqs[0] = wpa_s->go_params->freq; | |
349 | } else if (wpa_s->p2p_in_provisioning < 8 && | |
350 | wpa_s->go_params->freq_list[0]) { | |
351 | wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Scan only common " | |
352 | "channels"); | |
353 | int_array_concat(¶ms->freqs, | |
354 | wpa_s->go_params->freq_list); | |
355 | if (params->freqs) | |
356 | int_array_sort_unique(params->freqs); | |
357 | } | |
358 | wpa_s->p2p_in_provisioning++; | |
359 | } | |
41d5ce9e RR |
360 | |
361 | if (params->freqs == NULL && wpa_s->p2p_in_invitation) { | |
362 | /* | |
363 | * Optimize scan based on GO information during persistent | |
364 | * group reinvocation | |
365 | */ | |
28fa4eb2 | 366 | if (wpa_s->p2p_in_invitation < 5 && |
41d5ce9e RR |
367 | wpa_s->p2p_invite_go_freq > 0) { |
368 | wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Scan only GO preferred frequency %d MHz during invitation", | |
369 | wpa_s->p2p_invite_go_freq); | |
faebdeaa | 370 | params->freqs = os_calloc(2, sizeof(int)); |
41d5ce9e RR |
371 | if (params->freqs) |
372 | params->freqs[0] = wpa_s->p2p_invite_go_freq; | |
373 | } | |
374 | wpa_s->p2p_in_invitation++; | |
375 | if (wpa_s->p2p_in_invitation > 20) { | |
376 | /* | |
377 | * This should not really happen since the variable is | |
378 | * cleared on group removal, but if it does happen, make | |
379 | * sure we do not get stuck in special invitation scan | |
380 | * mode. | |
381 | */ | |
382 | wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Clear p2p_in_invitation"); | |
383 | wpa_s->p2p_in_invitation = 0; | |
384 | } | |
385 | } | |
5f738a21 LC |
386 | #endif /* CONFIG_P2P */ |
387 | ||
388 | #ifdef CONFIG_WPS | |
389 | if (params->freqs == NULL && wpa_s->after_wps && wpa_s->wps_freq) { | |
390 | /* | |
391 | * Optimize post-provisioning scan based on channel used | |
392 | * during provisioning. | |
393 | */ | |
394 | wpa_dbg(wpa_s, MSG_DEBUG, "WPS: Scan only frequency %u MHz " | |
395 | "that was used during provisioning", wpa_s->wps_freq); | |
faebdeaa | 396 | params->freqs = os_calloc(2, sizeof(int)); |
5f738a21 LC |
397 | if (params->freqs) |
398 | params->freqs[0] = wpa_s->wps_freq; | |
399 | wpa_s->after_wps--; | |
662b40b1 JM |
400 | } else if (wpa_s->after_wps) |
401 | wpa_s->after_wps--; | |
5f738a21 | 402 | |
1e7fb4f1 JM |
403 | if (params->freqs == NULL && wpa_s->known_wps_freq && wpa_s->wps_freq) |
404 | { | |
405 | /* Optimize provisioning scan based on already known channel */ | |
406 | wpa_dbg(wpa_s, MSG_DEBUG, "WPS: Scan only frequency %u MHz", | |
407 | wpa_s->wps_freq); | |
faebdeaa | 408 | params->freqs = os_calloc(2, sizeof(int)); |
1e7fb4f1 JM |
409 | if (params->freqs) |
410 | params->freqs[0] = wpa_s->wps_freq; | |
411 | wpa_s->known_wps_freq = 0; /* only do this once */ | |
412 | } | |
5f738a21 LC |
413 | #endif /* CONFIG_WPS */ |
414 | } | |
415 | ||
416 | ||
46ee0427 JM |
417 | #ifdef CONFIG_INTERWORKING |
418 | static void wpas_add_interworking_elements(struct wpa_supplicant *wpa_s, | |
419 | struct wpabuf *buf) | |
420 | { | |
46ee0427 JM |
421 | wpabuf_put_u8(buf, WLAN_EID_INTERWORKING); |
422 | wpabuf_put_u8(buf, is_zero_ether_addr(wpa_s->conf->hessid) ? 1 : | |
423 | 1 + ETH_ALEN); | |
11540c0b | 424 | wpabuf_put_u8(buf, wpa_s->conf->access_network_type); |
46ee0427 JM |
425 | /* No Venue Info */ |
426 | if (!is_zero_ether_addr(wpa_s->conf->hessid)) | |
427 | wpabuf_put_data(buf, wpa_s->conf->hessid, ETH_ALEN); | |
428 | } | |
429 | #endif /* CONFIG_INTERWORKING */ | |
430 | ||
431 | ||
a13e07ec | 432 | static struct wpabuf * wpa_supplicant_extra_ies(struct wpa_supplicant *wpa_s) |
6fc6879b | 433 | { |
46ee0427 | 434 | struct wpabuf *extra_ie = NULL; |
ad443097 IP |
435 | u8 ext_capab[18]; |
436 | int ext_capab_len; | |
b01c18a8 | 437 | #ifdef CONFIG_WPS |
509a3972 | 438 | int wps = 0; |
f90c86d4 | 439 | enum wps_request_type req_type = WPS_REQ_ENROLLEE_INFO; |
46ee0427 JM |
440 | #endif /* CONFIG_WPS */ |
441 | ||
ad443097 IP |
442 | ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab, |
443 | sizeof(ext_capab)); | |
444 | if (ext_capab_len > 0 && | |
445 | wpabuf_resize(&extra_ie, ext_capab_len) == 0) | |
446 | wpabuf_put_data(extra_ie, ext_capab, ext_capab_len); | |
447 | ||
46ee0427 JM |
448 | #ifdef CONFIG_INTERWORKING |
449 | if (wpa_s->conf->interworking && | |
450 | wpabuf_resize(&extra_ie, 100) == 0) | |
451 | wpas_add_interworking_elements(wpa_s, extra_ie); | |
452 | #endif /* CONFIG_INTERWORKING */ | |
5f738a21 | 453 | |
46ee0427 | 454 | #ifdef CONFIG_WPS |
5f738a21 LC |
455 | wps = wpas_wps_in_use(wpa_s, &req_type); |
456 | ||
457 | if (wps) { | |
46ee0427 | 458 | struct wpabuf *wps_ie; |
360182ed JM |
459 | wps_ie = wps_build_probe_req_ie(wps == 2 ? DEV_PW_PUSHBUTTON : |
460 | DEV_PW_DEFAULT, | |
461 | &wpa_s->wps->dev, | |
5f738a21 LC |
462 | wpa_s->wps->uuid, req_type, |
463 | 0, NULL); | |
464 | if (wps_ie) { | |
46ee0427 JM |
465 | if (wpabuf_resize(&extra_ie, wpabuf_len(wps_ie)) == 0) |
466 | wpabuf_put_buf(extra_ie, wps_ie); | |
467 | wpabuf_free(wps_ie); | |
5f738a21 LC |
468 | } |
469 | } | |
470 | ||
471 | #ifdef CONFIG_P2P | |
46ee0427 | 472 | if (wps) { |
5f738a21 | 473 | size_t ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p); |
46ee0427 JM |
474 | if (wpabuf_resize(&extra_ie, ielen) == 0) |
475 | wpas_p2p_scan_ie(wpa_s, extra_ie); | |
5f738a21 LC |
476 | } |
477 | #endif /* CONFIG_P2P */ | |
478 | ||
fbca4c89 JA |
479 | wpa_supplicant_mesh_add_scan_ie(wpa_s, &extra_ie); |
480 | ||
b01c18a8 | 481 | #endif /* CONFIG_WPS */ |
5f738a21 | 482 | |
0f105f9e JM |
483 | #ifdef CONFIG_HS20 |
484 | if (wpa_s->conf->hs20 && wpabuf_resize(&extra_ie, 7) == 0) | |
f9cd147d | 485 | wpas_hs20_add_indication(extra_ie, -1); |
0f105f9e JM |
486 | #endif /* CONFIG_HS20 */ |
487 | ||
b36a3a65 AN |
488 | #ifdef CONFIG_FST |
489 | if (wpa_s->fst_ies && | |
490 | wpabuf_resize(&extra_ie, wpabuf_len(wpa_s->fst_ies)) == 0) | |
491 | wpabuf_put_buf(extra_ie, wpa_s->fst_ies); | |
492 | #endif /* CONFIG_FST */ | |
493 | ||
46ee0427 | 494 | return extra_ie; |
5f738a21 LC |
495 | } |
496 | ||
497 | ||
5cc70322 JM |
498 | #ifdef CONFIG_P2P |
499 | ||
500 | /* | |
501 | * Check whether there are any enabled networks or credentials that could be | |
502 | * used for a non-P2P connection. | |
503 | */ | |
504 | static int non_p2p_network_enabled(struct wpa_supplicant *wpa_s) | |
505 | { | |
506 | struct wpa_ssid *ssid; | |
507 | ||
508 | for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { | |
509 | if (wpas_network_disabled(wpa_s, ssid)) | |
510 | continue; | |
511 | if (!ssid->p2p_group) | |
512 | return 1; | |
513 | } | |
514 | ||
515 | if (wpa_s->conf->cred && wpa_s->conf->interworking && | |
516 | wpa_s->conf->auto_interworking) | |
517 | return 1; | |
518 | ||
519 | return 0; | |
520 | } | |
521 | ||
6124e858 | 522 | #endif /* CONFIG_P2P */ |
5cc70322 | 523 | |
5cc70322 | 524 | |
faf9a858 JM |
525 | static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes, |
526 | u16 num_modes, | |
527 | enum hostapd_hw_mode mode) | |
528 | { | |
529 | u16 i; | |
530 | ||
531 | for (i = 0; i < num_modes; i++) { | |
532 | if (modes[i].mode == mode) | |
533 | return &modes[i]; | |
534 | } | |
535 | ||
536 | return NULL; | |
537 | } | |
538 | ||
539 | ||
540 | static void wpa_setband_scan_freqs_list(struct wpa_supplicant *wpa_s, | |
541 | enum hostapd_hw_mode band, | |
542 | struct wpa_driver_scan_params *params) | |
543 | { | |
544 | /* Include only supported channels for the specified band */ | |
545 | struct hostapd_hw_modes *mode; | |
546 | int count, i; | |
547 | ||
548 | mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, band); | |
549 | if (mode == NULL) { | |
550 | /* No channels supported in this band - use empty list */ | |
551 | params->freqs = os_zalloc(sizeof(int)); | |
552 | return; | |
553 | } | |
554 | ||
faebdeaa | 555 | params->freqs = os_calloc(mode->num_channels + 1, sizeof(int)); |
faf9a858 JM |
556 | if (params->freqs == NULL) |
557 | return; | |
558 | for (count = 0, i = 0; i < mode->num_channels; i++) { | |
559 | if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED) | |
560 | continue; | |
561 | params->freqs[count++] = mode->channels[i].freq; | |
562 | } | |
563 | } | |
564 | ||
565 | ||
566 | static void wpa_setband_scan_freqs(struct wpa_supplicant *wpa_s, | |
567 | struct wpa_driver_scan_params *params) | |
568 | { | |
569 | if (wpa_s->hw.modes == NULL) | |
570 | return; /* unknown what channels the driver supports */ | |
571 | if (params->freqs) | |
572 | return; /* already using a limited channel set */ | |
573 | if (wpa_s->setband == WPA_SETBAND_5G) | |
574 | wpa_setband_scan_freqs_list(wpa_s, HOSTAPD_MODE_IEEE80211A, | |
575 | params); | |
576 | else if (wpa_s->setband == WPA_SETBAND_2G) | |
577 | wpa_setband_scan_freqs_list(wpa_s, HOSTAPD_MODE_IEEE80211G, | |
578 | params); | |
579 | } | |
580 | ||
581 | ||
6891f0e6 LJ |
582 | static void wpa_set_scan_ssids(struct wpa_supplicant *wpa_s, |
583 | struct wpa_driver_scan_params *params, | |
584 | size_t max_ssids) | |
585 | { | |
586 | unsigned int i; | |
587 | struct wpa_ssid *ssid; | |
588 | ||
589 | for (i = 0; i < wpa_s->scan_id_count; i++) { | |
590 | unsigned int j; | |
591 | ||
592 | ssid = wpa_config_get_network(wpa_s->conf, wpa_s->scan_id[i]); | |
593 | if (!ssid || !ssid->scan_ssid) | |
594 | continue; | |
595 | ||
596 | for (j = 0; j < params->num_ssids; j++) { | |
597 | if (params->ssids[j].ssid_len == ssid->ssid_len && | |
598 | params->ssids[j].ssid && | |
599 | os_memcmp(params->ssids[j].ssid, ssid->ssid, | |
600 | ssid->ssid_len) == 0) | |
601 | break; | |
602 | } | |
603 | if (j < params->num_ssids) | |
604 | continue; /* already in the list */ | |
605 | ||
606 | if (params->num_ssids + 1 > max_ssids) { | |
607 | wpa_printf(MSG_DEBUG, | |
608 | "Over max scan SSIDs for manual request"); | |
609 | break; | |
610 | } | |
611 | ||
612 | wpa_printf(MSG_DEBUG, "Scan SSID (manual request): %s", | |
613 | wpa_ssid_txt(ssid->ssid, ssid->ssid_len)); | |
614 | params->ssids[params->num_ssids].ssid = ssid->ssid; | |
615 | params->ssids[params->num_ssids].ssid_len = ssid->ssid_len; | |
616 | params->num_ssids++; | |
617 | } | |
618 | ||
619 | wpa_s->scan_id_count = 0; | |
620 | } | |
621 | ||
622 | ||
a80651d0 KV |
623 | static int wpa_set_ssids_from_scan_req(struct wpa_supplicant *wpa_s, |
624 | struct wpa_driver_scan_params *params, | |
625 | size_t max_ssids) | |
626 | { | |
627 | unsigned int i; | |
628 | ||
629 | if (wpa_s->ssids_from_scan_req == NULL || | |
630 | wpa_s->num_ssids_from_scan_req == 0) | |
631 | return 0; | |
632 | ||
633 | if (wpa_s->num_ssids_from_scan_req > max_ssids) { | |
634 | wpa_s->num_ssids_from_scan_req = max_ssids; | |
635 | wpa_printf(MSG_DEBUG, "Over max scan SSIDs from scan req: %u", | |
636 | (unsigned int) max_ssids); | |
637 | } | |
638 | ||
639 | for (i = 0; i < wpa_s->num_ssids_from_scan_req; i++) { | |
640 | params->ssids[i].ssid = wpa_s->ssids_from_scan_req[i].ssid; | |
641 | params->ssids[i].ssid_len = | |
642 | wpa_s->ssids_from_scan_req[i].ssid_len; | |
643 | wpa_hexdump_ascii(MSG_DEBUG, "specific SSID", | |
644 | params->ssids[i].ssid, | |
645 | params->ssids[i].ssid_len); | |
646 | } | |
647 | ||
648 | params->num_ssids = wpa_s->num_ssids_from_scan_req; | |
649 | wpa_s->num_ssids_from_scan_req = 0; | |
650 | return 1; | |
651 | } | |
652 | ||
653 | ||
5f738a21 LC |
654 | static void wpa_supplicant_scan(void *eloop_ctx, void *timeout_ctx) |
655 | { | |
656 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
657 | struct wpa_ssid *ssid; | |
49e3eea8 | 658 | int ret, p2p_in_prog; |
b9b12d02 | 659 | struct wpabuf *extra_ie = NULL; |
e76baaac | 660 | struct wpa_driver_scan_params params; |
7c865c68 | 661 | struct wpa_driver_scan_params *scan_params; |
e76baaac | 662 | size_t max_ssids; |
3f9ebc43 | 663 | int connect_without_scan = 0; |
6fc6879b | 664 | |
cf70d298 | 665 | if (wpa_s->pno || wpa_s->pno_sched_pending) { |
dd271857 RM |
666 | wpa_dbg(wpa_s, MSG_DEBUG, "Skip scan - PNO is in progress"); |
667 | return; | |
668 | } | |
669 | ||
8401a6b0 | 670 | if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) { |
f049052b | 671 | wpa_dbg(wpa_s, MSG_DEBUG, "Skip scan - interface disabled"); |
8401a6b0 JM |
672 | return; |
673 | } | |
674 | ||
4115303b | 675 | if (wpa_s->disconnected && wpa_s->scan_req == NORMAL_SCAN_REQ) { |
ac06fb12 | 676 | wpa_dbg(wpa_s, MSG_DEBUG, "Disconnected - do not scan"); |
3180d7a2 | 677 | wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); |
6fc6879b | 678 | return; |
3180d7a2 | 679 | } |
6fc6879b | 680 | |
f86d282f JJ |
681 | if (wpa_s->scanning) { |
682 | /* | |
683 | * If we are already in scanning state, we shall reschedule the | |
684 | * the incoming scan request. | |
685 | */ | |
686 | wpa_dbg(wpa_s, MSG_DEBUG, "Already scanning - Reschedule the incoming scan req"); | |
687 | wpa_supplicant_req_scan(wpa_s, 1, 0); | |
688 | return; | |
689 | } | |
690 | ||
349493bd | 691 | if (!wpa_supplicant_enabled_networks(wpa_s) && |
4115303b | 692 | wpa_s->scan_req == NORMAL_SCAN_REQ) { |
f049052b | 693 | wpa_dbg(wpa_s, MSG_DEBUG, "No enabled networks - do not scan"); |
6fc6879b JM |
694 | wpa_supplicant_set_state(wpa_s, WPA_INACTIVE); |
695 | return; | |
696 | } | |
6fc6879b | 697 | |
c2a04078 JM |
698 | if (wpa_s->conf->ap_scan != 0 && |
699 | (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED)) { | |
f049052b BG |
700 | wpa_dbg(wpa_s, MSG_DEBUG, "Using wired authentication - " |
701 | "overriding ap_scan configuration"); | |
6fc6879b | 702 | wpa_s->conf->ap_scan = 0; |
8bac466b | 703 | wpas_notify_ap_scan_changed(wpa_s); |
6fc6879b JM |
704 | } |
705 | ||
706 | if (wpa_s->conf->ap_scan == 0) { | |
707 | wpa_supplicant_gen_assoc_event(wpa_s); | |
708 | return; | |
709 | } | |
710 | ||
3f9ebc43 | 711 | ssid = NULL; |
a51c40aa | 712 | if (wpa_s->scan_req != MANUAL_SCAN_REQ && |
3f9ebc43 JM |
713 | wpa_s->connect_without_scan) { |
714 | connect_without_scan = 1; | |
715 | for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { | |
716 | if (ssid == wpa_s->connect_without_scan) | |
717 | break; | |
718 | } | |
719 | } | |
720 | ||
49e3eea8 | 721 | p2p_in_prog = wpas_p2p_in_progress(wpa_s); |
3f9ebc43 JM |
722 | if (p2p_in_prog && p2p_in_prog != 2 && |
723 | (!ssid || | |
724 | (ssid->mode != WPAS_MODE_AP && ssid->mode != WPAS_MODE_P2P_GO))) { | |
1b5d4714 JM |
725 | wpa_dbg(wpa_s, MSG_DEBUG, "Delay station mode scan while P2P operation is in progress"); |
726 | wpa_supplicant_req_scan(wpa_s, 5, 0); | |
727 | return; | |
303f60d3 | 728 | } |
303f60d3 | 729 | |
17fbb751 | 730 | if (wpa_s->conf->ap_scan == 2) |
e76baaac JM |
731 | max_ssids = 1; |
732 | else { | |
733 | max_ssids = wpa_s->max_scan_ssids; | |
734 | if (max_ssids > WPAS_MAX_SCAN_SSIDS) | |
735 | max_ssids = WPAS_MAX_SCAN_SSIDS; | |
736 | } | |
737 | ||
12455031 | 738 | wpa_s->last_scan_req = wpa_s->scan_req; |
4115303b | 739 | wpa_s->scan_req = NORMAL_SCAN_REQ; |
e76baaac | 740 | |
3f9ebc43 JM |
741 | if (connect_without_scan) { |
742 | wpa_s->connect_without_scan = NULL; | |
743 | if (ssid) { | |
744 | wpa_printf(MSG_DEBUG, "Start a pre-selected network " | |
745 | "without scan step"); | |
746 | wpa_supplicant_associate(wpa_s, NULL, ssid); | |
747 | return; | |
748 | } | |
749 | } | |
750 | ||
e76baaac JM |
751 | os_memset(¶ms, 0, sizeof(params)); |
752 | ||
2d9c99e3 | 753 | wpa_s->scan_prev_wpa_state = wpa_s->wpa_state; |
6fc6879b JM |
754 | if (wpa_s->wpa_state == WPA_DISCONNECTED || |
755 | wpa_s->wpa_state == WPA_INACTIVE) | |
756 | wpa_supplicant_set_state(wpa_s, WPA_SCANNING); | |
757 | ||
7c865c68 TB |
758 | /* |
759 | * If autoscan has set its own scanning parameters | |
760 | */ | |
761 | if (wpa_s->autoscan_params != NULL) { | |
762 | scan_params = wpa_s->autoscan_params; | |
763 | goto scan; | |
764 | } | |
765 | ||
a80651d0 KV |
766 | if (wpa_s->last_scan_req == MANUAL_SCAN_REQ && |
767 | wpa_set_ssids_from_scan_req(wpa_s, ¶ms, max_ssids)) { | |
768 | wpa_printf(MSG_DEBUG, "Use specific SSIDs from SCAN command"); | |
769 | goto ssid_list_set; | |
770 | } | |
771 | ||
a21c05db | 772 | #ifdef CONFIG_P2P |
85ea132a | 773 | if ((wpa_s->p2p_in_provisioning || wpa_s->show_group_started) && |
c35e35ed | 774 | wpa_s->go_params && !wpa_s->conf->passive_scan) { |
9100b660 JM |
775 | wpa_printf(MSG_DEBUG, "P2P: Use specific SSID for scan during P2P group formation (p2p_in_provisioning=%d show_group_started=%d)", |
776 | wpa_s->p2p_in_provisioning, | |
777 | wpa_s->show_group_started); | |
a21c05db JM |
778 | params.ssids[0].ssid = wpa_s->go_params->ssid; |
779 | params.ssids[0].ssid_len = wpa_s->go_params->ssid_len; | |
780 | params.num_ssids = 1; | |
781 | goto ssid_list_set; | |
782 | } | |
41d5ce9e RR |
783 | |
784 | if (wpa_s->p2p_in_invitation) { | |
785 | if (wpa_s->current_ssid) { | |
786 | wpa_printf(MSG_DEBUG, "P2P: Use specific SSID for scan during invitation"); | |
787 | params.ssids[0].ssid = wpa_s->current_ssid->ssid; | |
788 | params.ssids[0].ssid_len = | |
789 | wpa_s->current_ssid->ssid_len; | |
790 | params.num_ssids = 1; | |
791 | } else { | |
792 | wpa_printf(MSG_DEBUG, "P2P: No specific SSID known for scan during invitation"); | |
793 | } | |
794 | goto ssid_list_set; | |
795 | } | |
a21c05db JM |
796 | #endif /* CONFIG_P2P */ |
797 | ||
e76baaac | 798 | /* Find the starting point from which to continue scanning */ |
6fc6879b | 799 | ssid = wpa_s->conf->ssid; |
ba2a573c | 800 | if (wpa_s->prev_scan_ssid != WILDCARD_SSID_SCAN) { |
6fc6879b JM |
801 | while (ssid) { |
802 | if (ssid == wpa_s->prev_scan_ssid) { | |
803 | ssid = ssid->next; | |
804 | break; | |
805 | } | |
806 | ssid = ssid->next; | |
807 | } | |
808 | } | |
6fc6879b | 809 | |
12455031 | 810 | if (wpa_s->last_scan_req != MANUAL_SCAN_REQ && |
0a34b62b JM |
811 | #ifdef CONFIG_AP |
812 | !wpa_s->ap_iface && | |
813 | #endif /* CONFIG_AP */ | |
12455031 | 814 | wpa_s->conf->ap_scan == 2) { |
7dcdcfd6 | 815 | wpa_s->connect_without_scan = NULL; |
b3aa456b | 816 | wpa_s->prev_scan_wildcard = 0; |
e76baaac JM |
817 | wpa_supplicant_assoc_try(wpa_s, ssid); |
818 | return; | |
819 | } else if (wpa_s->conf->ap_scan == 2) { | |
6fc6879b | 820 | /* |
ba2a573c JM |
821 | * User-initiated scan request in ap_scan == 2; scan with |
822 | * wildcard SSID. | |
6fc6879b | 823 | */ |
e76baaac | 824 | ssid = NULL; |
0f44ec8e PQ |
825 | } else if (wpa_s->reattach && wpa_s->current_ssid != NULL) { |
826 | /* | |
827 | * Perform single-channel single-SSID scan for | |
828 | * reassociate-to-same-BSS operation. | |
829 | */ | |
830 | /* Setup SSID */ | |
831 | ssid = wpa_s->current_ssid; | |
832 | wpa_hexdump_ascii(MSG_DEBUG, "Scan SSID", | |
833 | ssid->ssid, ssid->ssid_len); | |
834 | params.ssids[0].ssid = ssid->ssid; | |
835 | params.ssids[0].ssid_len = ssid->ssid_len; | |
836 | params.num_ssids = 1; | |
837 | ||
838 | /* | |
839 | * Allocate memory for frequency array, allocate one extra | |
840 | * slot for the zero-terminator. | |
841 | */ | |
842 | params.freqs = os_malloc(sizeof(int) * 2); | |
843 | if (params.freqs == NULL) { | |
844 | wpa_dbg(wpa_s, MSG_ERROR, "Memory allocation failed"); | |
845 | return; | |
846 | } | |
847 | params.freqs[0] = wpa_s->assoc_freq; | |
848 | params.freqs[1] = 0; | |
849 | ||
850 | /* | |
851 | * Reset the reattach flag so that we fall back to full scan if | |
852 | * this scan fails. | |
853 | */ | |
854 | wpa_s->reattach = 0; | |
e76baaac | 855 | } else { |
5be45e2e | 856 | struct wpa_ssid *start = ssid, *tssid; |
d3a98225 | 857 | int freqs_set = 0; |
e76baaac JM |
858 | if (ssid == NULL && max_ssids > 1) |
859 | ssid = wpa_s->conf->ssid; | |
860 | while (ssid) { | |
349493bd JM |
861 | if (!wpas_network_disabled(wpa_s, ssid) && |
862 | ssid->scan_ssid) { | |
e76baaac JM |
863 | wpa_hexdump_ascii(MSG_DEBUG, "Scan SSID", |
864 | ssid->ssid, ssid->ssid_len); | |
865 | params.ssids[params.num_ssids].ssid = | |
866 | ssid->ssid; | |
867 | params.ssids[params.num_ssids].ssid_len = | |
868 | ssid->ssid_len; | |
869 | params.num_ssids++; | |
870 | if (params.num_ssids + 1 >= max_ssids) | |
871 | break; | |
872 | } | |
873 | ssid = ssid->next; | |
874 | if (ssid == start) | |
875 | break; | |
876 | if (ssid == NULL && max_ssids > 1 && | |
877 | start != wpa_s->conf->ssid) | |
878 | ssid = wpa_s->conf->ssid; | |
6fc6879b | 879 | } |
d3a98225 | 880 | |
6891f0e6 LJ |
881 | if (wpa_s->scan_id_count && |
882 | wpa_s->last_scan_req == MANUAL_SCAN_REQ) | |
883 | wpa_set_scan_ssids(wpa_s, ¶ms, max_ssids); | |
884 | ||
0855e2e1 JM |
885 | for (tssid = wpa_s->conf->ssid; |
886 | wpa_s->last_scan_req != MANUAL_SCAN_REQ && tssid; | |
887 | tssid = tssid->next) { | |
349493bd | 888 | if (wpas_network_disabled(wpa_s, tssid)) |
d3a98225 | 889 | continue; |
5be45e2e | 890 | if ((params.freqs || !freqs_set) && tssid->scan_freq) { |
d3a98225 | 891 | int_array_concat(¶ms.freqs, |
5be45e2e | 892 | tssid->scan_freq); |
d3a98225 JM |
893 | } else { |
894 | os_free(params.freqs); | |
895 | params.freqs = NULL; | |
896 | } | |
897 | freqs_set = 1; | |
898 | } | |
899 | int_array_sort_unique(params.freqs); | |
6fc6879b JM |
900 | } |
901 | ||
b3aa456b ES |
902 | if (ssid && max_ssids == 1) { |
903 | /* | |
904 | * If the driver is limited to 1 SSID at a time interleave | |
905 | * wildcard SSID scans with specific SSID scans to avoid | |
906 | * waiting a long time for a wildcard scan. | |
907 | */ | |
908 | if (!wpa_s->prev_scan_wildcard) { | |
909 | params.ssids[0].ssid = NULL; | |
910 | params.ssids[0].ssid_len = 0; | |
911 | wpa_s->prev_scan_wildcard = 1; | |
912 | wpa_dbg(wpa_s, MSG_DEBUG, "Starting AP scan for " | |
913 | "wildcard SSID (Interleave with specific)"); | |
914 | } else { | |
915 | wpa_s->prev_scan_ssid = ssid; | |
916 | wpa_s->prev_scan_wildcard = 0; | |
917 | wpa_dbg(wpa_s, MSG_DEBUG, | |
918 | "Starting AP scan for specific SSID: %s", | |
919 | wpa_ssid_txt(ssid->ssid, ssid->ssid_len)); | |
e76baaac | 920 | } |
b3aa456b ES |
921 | } else if (ssid) { |
922 | /* max_ssids > 1 */ | |
923 | ||
924 | wpa_s->prev_scan_ssid = ssid; | |
925 | wpa_dbg(wpa_s, MSG_DEBUG, "Include wildcard SSID in " | |
926 | "the scan request"); | |
927 | params.num_ssids++; | |
88c2d488 JM |
928 | } else if (wpa_s->last_scan_req == MANUAL_SCAN_REQ && |
929 | wpa_s->manual_scan_passive && params.num_ssids == 0) { | |
930 | wpa_dbg(wpa_s, MSG_DEBUG, "Use passive scan based on manual request"); | |
c35e35ed JM |
931 | } else if (wpa_s->conf->passive_scan) { |
932 | wpa_dbg(wpa_s, MSG_DEBUG, | |
933 | "Use passive scan based on configuration"); | |
e76baaac | 934 | } else { |
ba2a573c | 935 | wpa_s->prev_scan_ssid = WILDCARD_SSID_SCAN; |
e76baaac | 936 | params.num_ssids++; |
f049052b BG |
937 | wpa_dbg(wpa_s, MSG_DEBUG, "Starting AP scan for wildcard " |
938 | "SSID"); | |
6fc6879b JM |
939 | } |
940 | ||
a80651d0 | 941 | ssid_list_set: |
5f738a21 | 942 | wpa_supplicant_optimize_freqs(wpa_s, ¶ms); |
a13e07ec | 943 | extra_ie = wpa_supplicant_extra_ies(wpa_s); |
0e65037c | 944 | |
949938aa | 945 | if (wpa_s->last_scan_req == MANUAL_SCAN_REQ && |
2dbe63ad JM |
946 | wpa_s->manual_scan_only_new) { |
947 | wpa_printf(MSG_DEBUG, | |
948 | "Request driver to clear scan cache due to manual only_new=1 scan"); | |
949938aa | 949 | params.only_new_results = 1; |
2dbe63ad | 950 | } |
949938aa | 951 | |
fee52342 JM |
952 | if (wpa_s->last_scan_req == MANUAL_SCAN_REQ && params.freqs == NULL && |
953 | wpa_s->manual_scan_freqs) { | |
954 | wpa_dbg(wpa_s, MSG_DEBUG, "Limit manual scan to specified channels"); | |
955 | params.freqs = wpa_s->manual_scan_freqs; | |
956 | wpa_s->manual_scan_freqs = NULL; | |
957 | } | |
958 | ||
f47d639d | 959 | if (params.freqs == NULL && wpa_s->next_scan_freqs) { |
f049052b BG |
960 | wpa_dbg(wpa_s, MSG_DEBUG, "Optimize scan based on previously " |
961 | "generated frequency list"); | |
f47d639d JM |
962 | params.freqs = wpa_s->next_scan_freqs; |
963 | } else | |
964 | os_free(wpa_s->next_scan_freqs); | |
965 | wpa_s->next_scan_freqs = NULL; | |
faf9a858 | 966 | wpa_setband_scan_freqs(wpa_s, ¶ms); |
f47d639d | 967 | |
f5ffc348 BG |
968 | /* See if user specified frequencies. If so, scan only those. */ |
969 | if (wpa_s->conf->freq_list && !params.freqs) { | |
970 | wpa_dbg(wpa_s, MSG_DEBUG, | |
971 | "Optimize scan based on conf->freq_list"); | |
972 | int_array_concat(¶ms.freqs, wpa_s->conf->freq_list); | |
973 | } | |
974 | ||
6124e858 BG |
975 | /* Use current associated channel? */ |
976 | if (wpa_s->conf->scan_cur_freq && !params.freqs) { | |
53c5dfc2 IP |
977 | unsigned int num = wpa_s->num_multichan_concurrent; |
978 | ||
979 | params.freqs = os_calloc(num + 1, sizeof(int)); | |
980 | if (params.freqs) { | |
981 | num = get_shared_radio_freqs(wpa_s, params.freqs, num); | |
982 | if (num > 0) { | |
983 | wpa_dbg(wpa_s, MSG_DEBUG, "Scan only the " | |
984 | "current operating channels since " | |
985 | "scan_cur_freq is enabled"); | |
986 | } else { | |
987 | os_free(params.freqs); | |
988 | params.freqs = NULL; | |
989 | } | |
6124e858 BG |
990 | } |
991 | } | |
992 | ||
3812464c JM |
993 | params.filter_ssids = wpa_supplicant_build_filter_ssids( |
994 | wpa_s->conf, ¶ms.num_filter_ssids); | |
46ee0427 JM |
995 | if (extra_ie) { |
996 | params.extra_ies = wpabuf_head(extra_ie); | |
997 | params.extra_ies_len = wpabuf_len(extra_ie); | |
998 | } | |
3812464c | 999 | |
d1dd48e3 | 1000 | #ifdef CONFIG_P2P |
8235f89f | 1001 | if (wpa_s->p2p_in_provisioning || wpa_s->p2p_in_invitation || |
85ea132a | 1002 | (wpa_s->show_group_started && wpa_s->go_params)) { |
d1dd48e3 JM |
1003 | /* |
1004 | * The interface may not yet be in P2P mode, so we have to | |
1005 | * explicitly request P2P probe to disable CCK rates. | |
1006 | */ | |
1007 | params.p2p_probe = 1; | |
1008 | } | |
1009 | #endif /* CONFIG_P2P */ | |
1010 | ||
56c76fa5 IP |
1011 | if (wpa_s->mac_addr_rand_enable & MAC_ADDR_RAND_SCAN) { |
1012 | params.mac_addr_rand = 1; | |
1013 | if (wpa_s->mac_addr_scan) { | |
1014 | params.mac_addr = wpa_s->mac_addr_scan; | |
1015 | params.mac_addr_mask = wpa_s->mac_addr_scan + ETH_ALEN; | |
1016 | } | |
1017 | } | |
1018 | ||
7c865c68 TB |
1019 | scan_params = ¶ms; |
1020 | ||
1021 | scan: | |
5cc70322 JM |
1022 | #ifdef CONFIG_P2P |
1023 | /* | |
1024 | * If the driver does not support multi-channel concurrency and a | |
1025 | * virtual interface that shares the same radio with the wpa_s interface | |
1026 | * is operating there may not be need to scan other channels apart from | |
1027 | * the current operating channel on the other virtual interface. Filter | |
1028 | * out other channels in case we are trying to find a connection for a | |
1029 | * station interface when we are not configured to prefer station | |
1030 | * connection and a concurrent operation is already in process. | |
1031 | */ | |
12455031 LP |
1032 | if (wpa_s->scan_for_connection && |
1033 | wpa_s->last_scan_req == NORMAL_SCAN_REQ && | |
5cc70322 JM |
1034 | !scan_params->freqs && !params.freqs && |
1035 | wpas_is_p2p_prioritized(wpa_s) && | |
5cc70322 JM |
1036 | wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE && |
1037 | non_p2p_network_enabled(wpa_s)) { | |
53c5dfc2 IP |
1038 | unsigned int num = wpa_s->num_multichan_concurrent; |
1039 | ||
1040 | params.freqs = os_calloc(num + 1, sizeof(int)); | |
1041 | if (params.freqs) { | |
1042 | num = get_shared_radio_freqs(wpa_s, params.freqs, num); | |
1043 | if (num > 0 && num == wpa_s->num_multichan_concurrent) { | |
1044 | wpa_dbg(wpa_s, MSG_DEBUG, "Scan only the current operating channels since all channels are already used"); | |
1045 | } else { | |
1046 | os_free(params.freqs); | |
1047 | params.freqs = NULL; | |
1048 | } | |
5cc70322 JM |
1049 | } |
1050 | } | |
1051 | #endif /* CONFIG_P2P */ | |
1052 | ||
7c865c68 | 1053 | ret = wpa_supplicant_trigger_scan(wpa_s, scan_params); |
6fc6879b | 1054 | |
fee52342 JM |
1055 | if (ret && wpa_s->last_scan_req == MANUAL_SCAN_REQ && params.freqs && |
1056 | !wpa_s->manual_scan_freqs) { | |
1057 | /* Restore manual_scan_freqs for the next attempt */ | |
1058 | wpa_s->manual_scan_freqs = params.freqs; | |
1059 | params.freqs = NULL; | |
1060 | } | |
1061 | ||
46ee0427 | 1062 | wpabuf_free(extra_ie); |
d3a98225 | 1063 | os_free(params.freqs); |
3812464c | 1064 | os_free(params.filter_ssids); |
ad08c363 | 1065 | |
6fc6879b | 1066 | if (ret) { |
f049052b | 1067 | wpa_msg(wpa_s, MSG_WARNING, "Failed to initiate AP scan"); |
2d9c99e3 JM |
1068 | if (wpa_s->scan_prev_wpa_state != wpa_s->wpa_state) |
1069 | wpa_supplicant_set_state(wpa_s, | |
1070 | wpa_s->scan_prev_wpa_state); | |
23270cd8 | 1071 | /* Restore scan_req since we will try to scan again */ |
12455031 | 1072 | wpa_s->scan_req = wpa_s->last_scan_req; |
1c4c9c50 | 1073 | wpa_supplicant_req_scan(wpa_s, 1, 0); |
5cc70322 JM |
1074 | } else { |
1075 | wpa_s->scan_for_connection = 0; | |
a8826b18 JM |
1076 | #ifdef CONFIG_INTERWORKING |
1077 | wpa_s->interworking_fast_assoc_tried = 0; | |
1078 | #endif /* CONFIG_INTERWORKING */ | |
d902a9c1 | 1079 | } |
6fc6879b JM |
1080 | } |
1081 | ||
1082 | ||
9e737f08 PF |
1083 | void wpa_supplicant_update_scan_int(struct wpa_supplicant *wpa_s, int sec) |
1084 | { | |
594516b4 | 1085 | struct os_reltime remaining, new_int; |
9e737f08 PF |
1086 | int cancelled; |
1087 | ||
1088 | cancelled = eloop_cancel_timeout_one(wpa_supplicant_scan, wpa_s, NULL, | |
1089 | &remaining); | |
1090 | ||
1091 | new_int.sec = sec; | |
1092 | new_int.usec = 0; | |
594516b4 | 1093 | if (cancelled && os_reltime_before(&remaining, &new_int)) { |
9e737f08 PF |
1094 | new_int.sec = remaining.sec; |
1095 | new_int.usec = remaining.usec; | |
1096 | } | |
1097 | ||
c6f5dec9 PF |
1098 | if (cancelled) { |
1099 | eloop_register_timeout(new_int.sec, new_int.usec, | |
1100 | wpa_supplicant_scan, wpa_s, NULL); | |
1101 | } | |
9e737f08 PF |
1102 | wpa_s->scan_interval = sec; |
1103 | } | |
1104 | ||
1105 | ||
6fc6879b JM |
1106 | /** |
1107 | * wpa_supplicant_req_scan - Schedule a scan for neighboring access points | |
1108 | * @wpa_s: Pointer to wpa_supplicant data | |
1109 | * @sec: Number of seconds after which to scan | |
1110 | * @usec: Number of microseconds after which to scan | |
1111 | * | |
1112 | * This function is used to schedule a scan for neighboring access points after | |
1113 | * the specified time. | |
1114 | */ | |
1115 | void wpa_supplicant_req_scan(struct wpa_supplicant *wpa_s, int sec, int usec) | |
1116 | { | |
44b9ea5b JM |
1117 | int res; |
1118 | ||
1119 | if (wpa_s->p2p_mgmt) { | |
1120 | wpa_dbg(wpa_s, MSG_DEBUG, | |
1121 | "Ignore scan request (%d.%06d sec) on p2p_mgmt interface", | |
1122 | sec, usec); | |
1123 | return; | |
1124 | } | |
1125 | ||
1126 | res = eloop_deplete_timeout(sec, usec, wpa_supplicant_scan, wpa_s, | |
1127 | NULL); | |
a09ffd5f JM |
1128 | if (res == 1) { |
1129 | wpa_dbg(wpa_s, MSG_DEBUG, "Rescheduling scan request: %d.%06d sec", | |
e2f5a988 | 1130 | sec, usec); |
a09ffd5f JM |
1131 | } else if (res == 0) { |
1132 | wpa_dbg(wpa_s, MSG_DEBUG, "Ignore new scan request for %d.%06d sec since an earlier request is scheduled to trigger sooner", | |
1133 | sec, usec); | |
1134 | } else { | |
1135 | wpa_dbg(wpa_s, MSG_DEBUG, "Setting scan request: %d.%06d sec", | |
1136 | sec, usec); | |
1137 | eloop_register_timeout(sec, usec, wpa_supplicant_scan, wpa_s, NULL); | |
e2f5a988 | 1138 | } |
6fc6879b JM |
1139 | } |
1140 | ||
1141 | ||
6a90053c LC |
1142 | /** |
1143 | * wpa_supplicant_delayed_sched_scan - Request a delayed scheduled scan | |
1144 | * @wpa_s: Pointer to wpa_supplicant data | |
1145 | * @sec: Number of seconds after which to scan | |
1146 | * @usec: Number of microseconds after which to scan | |
2c09af30 | 1147 | * Returns: 0 on success or -1 otherwise |
6a90053c LC |
1148 | * |
1149 | * This function is used to schedule periodic scans for neighboring | |
1150 | * access points after the specified time. | |
1151 | */ | |
1152 | int wpa_supplicant_delayed_sched_scan(struct wpa_supplicant *wpa_s, | |
1153 | int sec, int usec) | |
1154 | { | |
1155 | if (!wpa_s->sched_scan_supported) | |
1156 | return -1; | |
1157 | ||
1158 | eloop_register_timeout(sec, usec, | |
1159 | wpa_supplicant_delayed_sched_scan_timeout, | |
1160 | wpa_s, NULL); | |
1161 | ||
1162 | return 0; | |
1163 | } | |
1164 | ||
1165 | ||
cbdf3507 LC |
1166 | /** |
1167 | * wpa_supplicant_req_sched_scan - Start a periodic scheduled scan | |
1168 | * @wpa_s: Pointer to wpa_supplicant data | |
2c09af30 | 1169 | * Returns: 0 is sched_scan was started or -1 otherwise |
cbdf3507 LC |
1170 | * |
1171 | * This function is used to schedule periodic scans for neighboring | |
1172 | * access points repeating the scan continuously. | |
1173 | */ | |
1174 | int wpa_supplicant_req_sched_scan(struct wpa_supplicant *wpa_s) | |
1175 | { | |
1176 | struct wpa_driver_scan_params params; | |
7c865c68 | 1177 | struct wpa_driver_scan_params *scan_params; |
cbdf3507 | 1178 | enum wpa_states prev_state; |
7c865c68 | 1179 | struct wpa_ssid *ssid = NULL; |
a13e07ec | 1180 | struct wpabuf *extra_ie = NULL; |
cbdf3507 | 1181 | int ret; |
cbdf3507 | 1182 | unsigned int max_sched_scan_ssids; |
76a5249e | 1183 | int wildcard = 0; |
0b7a25c0 | 1184 | int need_ssids; |
cbdf3507 LC |
1185 | |
1186 | if (!wpa_s->sched_scan_supported) | |
1187 | return -1; | |
1188 | ||
1189 | if (wpa_s->max_sched_scan_ssids > WPAS_MAX_SCAN_SSIDS) | |
1190 | max_sched_scan_ssids = WPAS_MAX_SCAN_SSIDS; | |
1191 | else | |
1192 | max_sched_scan_ssids = wpa_s->max_sched_scan_ssids; | |
54ddd743 | 1193 | if (max_sched_scan_ssids < 1 || wpa_s->conf->disable_scan_offload) |
76a5249e | 1194 | return -1; |
cbdf3507 | 1195 | |
1966e3d1 ES |
1196 | if (wpa_s->sched_scanning) { |
1197 | wpa_dbg(wpa_s, MSG_DEBUG, "Already sched scanning"); | |
cbdf3507 | 1198 | return 0; |
1966e3d1 | 1199 | } |
cbdf3507 | 1200 | |
0b7a25c0 JM |
1201 | need_ssids = 0; |
1202 | for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { | |
349493bd | 1203 | if (!wpas_network_disabled(wpa_s, ssid) && !ssid->scan_ssid) { |
0b7a25c0 JM |
1204 | /* Use wildcard SSID to find this network */ |
1205 | wildcard = 1; | |
349493bd JM |
1206 | } else if (!wpas_network_disabled(wpa_s, ssid) && |
1207 | ssid->ssid_len) | |
0b7a25c0 | 1208 | need_ssids++; |
aa283ddd JM |
1209 | |
1210 | #ifdef CONFIG_WPS | |
349493bd | 1211 | if (!wpas_network_disabled(wpa_s, ssid) && |
fea7c3a0 | 1212 | ssid->key_mgmt == WPA_KEY_MGMT_WPS) { |
aa283ddd JM |
1213 | /* |
1214 | * Normal scan is more reliable and faster for WPS | |
1215 | * operations and since these are for short periods of | |
1216 | * time, the benefit of trying to use sched_scan would | |
1217 | * be limited. | |
1218 | */ | |
1219 | wpa_dbg(wpa_s, MSG_DEBUG, "Use normal scan instead of " | |
1220 | "sched_scan for WPS"); | |
1221 | return -1; | |
1222 | } | |
1223 | #endif /* CONFIG_WPS */ | |
0b7a25c0 JM |
1224 | } |
1225 | if (wildcard) | |
1226 | need_ssids++; | |
1227 | ||
1228 | if (wpa_s->normal_scans < 3 && | |
1229 | (need_ssids <= wpa_s->max_scan_ssids || | |
1230 | wpa_s->max_scan_ssids >= (int) max_sched_scan_ssids)) { | |
1231 | /* | |
1232 | * When normal scan can speed up operations, use that for the | |
1233 | * first operations before starting the sched_scan to allow | |
1234 | * user space sleep more. We do this only if the normal scan | |
1235 | * has functionality that is suitable for this or if the | |
1236 | * sched_scan does not have better support for multiple SSIDs. | |
1237 | */ | |
1238 | wpa_dbg(wpa_s, MSG_DEBUG, "Use normal scan instead of " | |
1239 | "sched_scan for initial scans (normal_scans=%d)", | |
1240 | wpa_s->normal_scans); | |
1241 | return -1; | |
1242 | } | |
1243 | ||
cbdf3507 LC |
1244 | os_memset(¶ms, 0, sizeof(params)); |
1245 | ||
b59e6f26 | 1246 | /* If we can't allocate space for the filters, we just don't filter */ |
faebdeaa | 1247 | params.filter_ssids = os_calloc(wpa_s->max_match_sets, |
b59e6f26 LC |
1248 | sizeof(struct wpa_driver_scan_filter)); |
1249 | ||
cbdf3507 LC |
1250 | prev_state = wpa_s->wpa_state; |
1251 | if (wpa_s->wpa_state == WPA_DISCONNECTED || | |
1252 | wpa_s->wpa_state == WPA_INACTIVE) | |
1253 | wpa_supplicant_set_state(wpa_s, WPA_SCANNING); | |
1254 | ||
7c865c68 TB |
1255 | if (wpa_s->autoscan_params != NULL) { |
1256 | scan_params = wpa_s->autoscan_params; | |
1257 | goto scan; | |
1258 | } | |
1259 | ||
cbdf3507 LC |
1260 | /* Find the starting point from which to continue scanning */ |
1261 | ssid = wpa_s->conf->ssid; | |
1262 | if (wpa_s->prev_sched_ssid) { | |
1263 | while (ssid) { | |
1264 | if (ssid == wpa_s->prev_sched_ssid) { | |
1265 | ssid = ssid->next; | |
1266 | break; | |
1267 | } | |
1268 | ssid = ssid->next; | |
1269 | } | |
1270 | } | |
1271 | ||
1272 | if (!ssid || !wpa_s->prev_sched_ssid) { | |
1273 | wpa_dbg(wpa_s, MSG_DEBUG, "Beginning of SSID list"); | |
4aa81868 SF |
1274 | if (wpa_s->conf->sched_scan_interval) |
1275 | wpa_s->sched_scan_interval = | |
1276 | wpa_s->conf->sched_scan_interval; | |
7c865c68 TB |
1277 | if (wpa_s->sched_scan_interval == 0) |
1278 | wpa_s->sched_scan_interval = 10; | |
cbdf3507 LC |
1279 | wpa_s->sched_scan_timeout = max_sched_scan_ssids * 2; |
1280 | wpa_s->first_sched_scan = 1; | |
1281 | ssid = wpa_s->conf->ssid; | |
1282 | wpa_s->prev_sched_ssid = ssid; | |
1283 | } | |
1284 | ||
76a5249e JM |
1285 | if (wildcard) { |
1286 | wpa_dbg(wpa_s, MSG_DEBUG, "Add wildcard SSID to sched_scan"); | |
1287 | params.num_ssids++; | |
1288 | } | |
1289 | ||
cbdf3507 | 1290 | while (ssid) { |
349493bd | 1291 | if (wpas_network_disabled(wpa_s, ssid)) |
5edddf41 | 1292 | goto next; |
cbdf3507 | 1293 | |
fcd16847 JM |
1294 | if (params.num_filter_ssids < wpa_s->max_match_sets && |
1295 | params.filter_ssids && ssid->ssid && ssid->ssid_len) { | |
1966e3d1 ES |
1296 | wpa_dbg(wpa_s, MSG_DEBUG, "add to filter ssid: %s", |
1297 | wpa_ssid_txt(ssid->ssid, ssid->ssid_len)); | |
b59e6f26 LC |
1298 | os_memcpy(params.filter_ssids[params.num_filter_ssids].ssid, |
1299 | ssid->ssid, ssid->ssid_len); | |
1300 | params.filter_ssids[params.num_filter_ssids].ssid_len = | |
1301 | ssid->ssid_len; | |
1302 | params.num_filter_ssids++; | |
86b47aaf JM |
1303 | } else if (params.filter_ssids && ssid->ssid && ssid->ssid_len) |
1304 | { | |
1305 | wpa_dbg(wpa_s, MSG_DEBUG, "Not enough room for SSID " | |
1306 | "filter for sched_scan - drop filter"); | |
1307 | os_free(params.filter_ssids); | |
1308 | params.filter_ssids = NULL; | |
1309 | params.num_filter_ssids = 0; | |
b59e6f26 LC |
1310 | } |
1311 | ||
3f56f3a4 | 1312 | if (ssid->scan_ssid && ssid->ssid && ssid->ssid_len) { |
76a5249e JM |
1313 | if (params.num_ssids == max_sched_scan_ssids) |
1314 | break; /* only room for broadcast SSID */ | |
3f56f3a4 JM |
1315 | wpa_dbg(wpa_s, MSG_DEBUG, |
1316 | "add to active scan ssid: %s", | |
1966e3d1 | 1317 | wpa_ssid_txt(ssid->ssid, ssid->ssid_len)); |
cbdf3507 LC |
1318 | params.ssids[params.num_ssids].ssid = |
1319 | ssid->ssid; | |
1320 | params.ssids[params.num_ssids].ssid_len = | |
1321 | ssid->ssid_len; | |
1322 | params.num_ssids++; | |
b59e6f26 | 1323 | if (params.num_ssids >= max_sched_scan_ssids) { |
cbdf3507 | 1324 | wpa_s->prev_sched_ssid = ssid; |
b55aca46 JM |
1325 | do { |
1326 | ssid = ssid->next; | |
1327 | } while (ssid && | |
349493bd | 1328 | (wpas_network_disabled(wpa_s, ssid) || |
fea7c3a0 | 1329 | !ssid->scan_ssid)); |
cbdf3507 LC |
1330 | break; |
1331 | } | |
1332 | } | |
b59e6f26 | 1333 | |
5edddf41 | 1334 | next: |
cbdf3507 LC |
1335 | wpa_s->prev_sched_ssid = ssid; |
1336 | ssid = ssid->next; | |
1337 | } | |
1338 | ||
7c6a266c JM |
1339 | if (params.num_filter_ssids == 0) { |
1340 | os_free(params.filter_ssids); | |
1341 | params.filter_ssids = NULL; | |
1342 | } | |
1343 | ||
a13e07ec ES |
1344 | extra_ie = wpa_supplicant_extra_ies(wpa_s); |
1345 | if (extra_ie) { | |
1346 | params.extra_ies = wpabuf_head(extra_ie); | |
1347 | params.extra_ies_len = wpabuf_len(extra_ie); | |
1348 | } | |
cbdf3507 | 1349 | |
cf70d298 RM |
1350 | if (wpa_s->conf->filter_rssi) |
1351 | params.filter_rssi = wpa_s->conf->filter_rssi; | |
1352 | ||
1cc0d6a0 BP |
1353 | /* See if user specified frequencies. If so, scan only those. */ |
1354 | if (wpa_s->conf->freq_list && !params.freqs) { | |
1355 | wpa_dbg(wpa_s, MSG_DEBUG, | |
1356 | "Optimize scan based on conf->freq_list"); | |
1357 | int_array_concat(¶ms.freqs, wpa_s->conf->freq_list); | |
1358 | } | |
1359 | ||
7c865c68 TB |
1360 | scan_params = ¶ms; |
1361 | ||
1362 | scan: | |
a8cb5a88 | 1363 | if (ssid || !wpa_s->first_sched_scan) { |
a8cb5a88 JM |
1364 | wpa_dbg(wpa_s, MSG_DEBUG, |
1365 | "Starting sched scan: interval %d timeout %d", | |
1366 | wpa_s->sched_scan_interval, wpa_s->sched_scan_timeout); | |
7d21a223 JM |
1367 | } else { |
1368 | wpa_dbg(wpa_s, MSG_DEBUG, | |
1369 | "Starting sched scan: interval %d (no timeout)", | |
1370 | wpa_s->sched_scan_interval); | |
a8cb5a88 | 1371 | } |
cbdf3507 | 1372 | |
faf9a858 JM |
1373 | wpa_setband_scan_freqs(wpa_s, scan_params); |
1374 | ||
56c76fa5 IP |
1375 | if (wpa_s->mac_addr_rand_enable & MAC_ADDR_RAND_SCHED_SCAN) { |
1376 | params.mac_addr_rand = 1; | |
1377 | if (wpa_s->mac_addr_sched_scan) { | |
1378 | params.mac_addr = wpa_s->mac_addr_sched_scan; | |
1379 | params.mac_addr_mask = wpa_s->mac_addr_sched_scan + | |
1380 | ETH_ALEN; | |
1381 | } | |
1382 | } | |
1383 | ||
7c865c68 | 1384 | ret = wpa_supplicant_start_sched_scan(wpa_s, scan_params, |
cbdf3507 | 1385 | wpa_s->sched_scan_interval); |
a13e07ec | 1386 | wpabuf_free(extra_ie); |
b59e6f26 | 1387 | os_free(params.filter_ssids); |
cbdf3507 LC |
1388 | if (ret) { |
1389 | wpa_msg(wpa_s, MSG_WARNING, "Failed to initiate sched scan"); | |
1390 | if (prev_state != wpa_s->wpa_state) | |
1391 | wpa_supplicant_set_state(wpa_s, prev_state); | |
1392 | return ret; | |
1393 | } | |
1394 | ||
1395 | /* If we have more SSIDs to scan, add a timeout so we scan them too */ | |
1396 | if (ssid || !wpa_s->first_sched_scan) { | |
1397 | wpa_s->sched_scan_timed_out = 0; | |
1398 | eloop_register_timeout(wpa_s->sched_scan_timeout, 0, | |
1399 | wpa_supplicant_sched_scan_timeout, | |
1400 | wpa_s, NULL); | |
1401 | wpa_s->first_sched_scan = 0; | |
1402 | wpa_s->sched_scan_timeout /= 2; | |
1403 | wpa_s->sched_scan_interval *= 2; | |
a09fc1cc DS |
1404 | if (wpa_s->sched_scan_timeout < wpa_s->sched_scan_interval) { |
1405 | wpa_s->sched_scan_interval = 10; | |
1406 | wpa_s->sched_scan_timeout = max_sched_scan_ssids * 2; | |
1407 | } | |
cbdf3507 LC |
1408 | } |
1409 | ||
7ed52f67 DS |
1410 | /* If there is no more ssids, start next time from the beginning */ |
1411 | if (!ssid) | |
1412 | wpa_s->prev_sched_ssid = NULL; | |
1413 | ||
cbdf3507 LC |
1414 | return 0; |
1415 | } | |
1416 | ||
1417 | ||
6fc6879b JM |
1418 | /** |
1419 | * wpa_supplicant_cancel_scan - Cancel a scheduled scan request | |
1420 | * @wpa_s: Pointer to wpa_supplicant data | |
1421 | * | |
1422 | * This function is used to cancel a scan request scheduled with | |
1423 | * wpa_supplicant_req_scan(). | |
1424 | */ | |
1425 | void wpa_supplicant_cancel_scan(struct wpa_supplicant *wpa_s) | |
1426 | { | |
f049052b | 1427 | wpa_dbg(wpa_s, MSG_DEBUG, "Cancelling scan request"); |
6fc6879b JM |
1428 | eloop_cancel_timeout(wpa_supplicant_scan, wpa_s, NULL); |
1429 | } | |
cb8564b1 DW |
1430 | |
1431 | ||
831770bf CZ |
1432 | /** |
1433 | * wpa_supplicant_cancel_delayed_sched_scan - Stop a delayed scheduled scan | |
1434 | * @wpa_s: Pointer to wpa_supplicant data | |
1435 | * | |
1436 | * This function is used to stop a delayed scheduled scan. | |
1437 | */ | |
1438 | void wpa_supplicant_cancel_delayed_sched_scan(struct wpa_supplicant *wpa_s) | |
1439 | { | |
1440 | if (!wpa_s->sched_scan_supported) | |
1441 | return; | |
1442 | ||
1443 | wpa_dbg(wpa_s, MSG_DEBUG, "Cancelling delayed sched scan"); | |
1444 | eloop_cancel_timeout(wpa_supplicant_delayed_sched_scan_timeout, | |
1445 | wpa_s, NULL); | |
1446 | } | |
1447 | ||
1448 | ||
cbdf3507 LC |
1449 | /** |
1450 | * wpa_supplicant_cancel_sched_scan - Stop running scheduled scans | |
1451 | * @wpa_s: Pointer to wpa_supplicant data | |
1452 | * | |
1453 | * This function is used to stop a periodic scheduled scan. | |
1454 | */ | |
1455 | void wpa_supplicant_cancel_sched_scan(struct wpa_supplicant *wpa_s) | |
1456 | { | |
1457 | if (!wpa_s->sched_scanning) | |
1458 | return; | |
1459 | ||
1460 | wpa_dbg(wpa_s, MSG_DEBUG, "Cancelling sched scan"); | |
1461 | eloop_cancel_timeout(wpa_supplicant_sched_scan_timeout, wpa_s, NULL); | |
1462 | wpa_supplicant_stop_sched_scan(wpa_s); | |
1463 | } | |
1464 | ||
1465 | ||
2c09af30 JM |
1466 | /** |
1467 | * wpa_supplicant_notify_scanning - Indicate possible scan state change | |
1468 | * @wpa_s: Pointer to wpa_supplicant data | |
1469 | * @scanning: Whether scanning is currently in progress | |
1470 | * | |
1471 | * This function is to generate scanning notifycations. It is called whenever | |
1472 | * there may have been a change in scanning (scan started, completed, stopped). | |
1473 | * wpas_notify_scanning() is called whenever the scanning state changed from the | |
1474 | * previously notified state. | |
1475 | */ | |
cb8564b1 DW |
1476 | void wpa_supplicant_notify_scanning(struct wpa_supplicant *wpa_s, |
1477 | int scanning) | |
1478 | { | |
1479 | if (wpa_s->scanning != scanning) { | |
1480 | wpa_s->scanning = scanning; | |
8bac466b | 1481 | wpas_notify_scanning(wpa_s); |
cb8564b1 DW |
1482 | } |
1483 | } | |
1484 | ||
9ba9fa07 JM |
1485 | |
1486 | static int wpa_scan_get_max_rate(const struct wpa_scan_res *res) | |
1487 | { | |
1488 | int rate = 0; | |
1489 | const u8 *ie; | |
1490 | int i; | |
1491 | ||
1492 | ie = wpa_scan_get_ie(res, WLAN_EID_SUPP_RATES); | |
1493 | for (i = 0; ie && i < ie[1]; i++) { | |
1494 | if ((ie[i + 2] & 0x7f) > rate) | |
1495 | rate = ie[i + 2] & 0x7f; | |
1496 | } | |
1497 | ||
1498 | ie = wpa_scan_get_ie(res, WLAN_EID_EXT_SUPP_RATES); | |
1499 | for (i = 0; ie && i < ie[1]; i++) { | |
1500 | if ((ie[i + 2] & 0x7f) > rate) | |
1501 | rate = ie[i + 2] & 0x7f; | |
1502 | } | |
1503 | ||
1504 | return rate; | |
1505 | } | |
1506 | ||
1507 | ||
2c09af30 JM |
1508 | /** |
1509 | * wpa_scan_get_ie - Fetch a specified information element from a scan result | |
1510 | * @res: Scan result entry | |
1511 | * @ie: Information element identitifier (WLAN_EID_*) | |
1512 | * Returns: Pointer to the information element (id field) or %NULL if not found | |
1513 | * | |
1514 | * This function returns the first matching information element in the scan | |
1515 | * result. | |
1516 | */ | |
d1f9c410 JM |
1517 | const u8 * wpa_scan_get_ie(const struct wpa_scan_res *res, u8 ie) |
1518 | { | |
1519 | const u8 *end, *pos; | |
1520 | ||
1521 | pos = (const u8 *) (res + 1); | |
1522 | end = pos + res->ie_len; | |
1523 | ||
904e977b JM |
1524 | while (end - pos > 1) { |
1525 | if (2 + pos[1] > end - pos) | |
d1f9c410 JM |
1526 | break; |
1527 | if (pos[0] == ie) | |
1528 | return pos; | |
1529 | pos += 2 + pos[1]; | |
1530 | } | |
1531 | ||
1532 | return NULL; | |
1533 | } | |
1534 | ||
1535 | ||
2c09af30 JM |
1536 | /** |
1537 | * wpa_scan_get_vendor_ie - Fetch vendor information element from a scan result | |
1538 | * @res: Scan result entry | |
1539 | * @vendor_type: Vendor type (four octets starting the IE payload) | |
1540 | * Returns: Pointer to the information element (id field) or %NULL if not found | |
1541 | * | |
1542 | * This function returns the first matching information element in the scan | |
1543 | * result. | |
1544 | */ | |
9ba9fa07 JM |
1545 | const u8 * wpa_scan_get_vendor_ie(const struct wpa_scan_res *res, |
1546 | u32 vendor_type) | |
1547 | { | |
1548 | const u8 *end, *pos; | |
1549 | ||
1550 | pos = (const u8 *) (res + 1); | |
1551 | end = pos + res->ie_len; | |
1552 | ||
904e977b JM |
1553 | while (end - pos > 1) { |
1554 | if (2 + pos[1] > end - pos) | |
9ba9fa07 JM |
1555 | break; |
1556 | if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 && | |
1557 | vendor_type == WPA_GET_BE32(&pos[2])) | |
1558 | return pos; | |
1559 | pos += 2 + pos[1]; | |
1560 | } | |
1561 | ||
1562 | return NULL; | |
1563 | } | |
1564 | ||
1565 | ||
aaeb9c98 JM |
1566 | /** |
1567 | * wpa_scan_get_vendor_ie_beacon - Fetch vendor information from a scan result | |
1568 | * @res: Scan result entry | |
1569 | * @vendor_type: Vendor type (four octets starting the IE payload) | |
1570 | * Returns: Pointer to the information element (id field) or %NULL if not found | |
1571 | * | |
1572 | * This function returns the first matching information element in the scan | |
1573 | * result. | |
1574 | * | |
1575 | * This function is like wpa_scan_get_vendor_ie(), but uses IE buffer only | |
1576 | * from Beacon frames instead of either Beacon or Probe Response frames. | |
1577 | */ | |
1578 | const u8 * wpa_scan_get_vendor_ie_beacon(const struct wpa_scan_res *res, | |
1579 | u32 vendor_type) | |
1580 | { | |
1581 | const u8 *end, *pos; | |
1582 | ||
1583 | if (res->beacon_ie_len == 0) | |
1584 | return NULL; | |
1585 | ||
1586 | pos = (const u8 *) (res + 1); | |
1587 | pos += res->ie_len; | |
1588 | end = pos + res->beacon_ie_len; | |
1589 | ||
904e977b JM |
1590 | while (end - pos > 1) { |
1591 | if (2 + pos[1] > end - pos) | |
aaeb9c98 JM |
1592 | break; |
1593 | if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 && | |
1594 | vendor_type == WPA_GET_BE32(&pos[2])) | |
1595 | return pos; | |
1596 | pos += 2 + pos[1]; | |
1597 | } | |
1598 | ||
1599 | return NULL; | |
1600 | } | |
1601 | ||
1602 | ||
2c09af30 JM |
1603 | /** |
1604 | * wpa_scan_get_vendor_ie_multi - Fetch vendor IE data from a scan result | |
1605 | * @res: Scan result entry | |
1606 | * @vendor_type: Vendor type (four octets starting the IE payload) | |
1607 | * Returns: Pointer to the information element payload or %NULL if not found | |
1608 | * | |
1609 | * This function returns concatenated payload of possibly fragmented vendor | |
1610 | * specific information elements in the scan result. The caller is responsible | |
1611 | * for freeing the returned buffer. | |
1612 | */ | |
9ba9fa07 JM |
1613 | struct wpabuf * wpa_scan_get_vendor_ie_multi(const struct wpa_scan_res *res, |
1614 | u32 vendor_type) | |
1615 | { | |
1616 | struct wpabuf *buf; | |
1617 | const u8 *end, *pos; | |
1618 | ||
1619 | buf = wpabuf_alloc(res->ie_len); | |
1620 | if (buf == NULL) | |
1621 | return NULL; | |
1622 | ||
1623 | pos = (const u8 *) (res + 1); | |
1624 | end = pos + res->ie_len; | |
1625 | ||
904e977b JM |
1626 | while (end - pos > 1) { |
1627 | if (2 + pos[1] > end - pos) | |
54f489be JM |
1628 | break; |
1629 | if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 && | |
1630 | vendor_type == WPA_GET_BE32(&pos[2])) | |
1631 | wpabuf_put_data(buf, pos + 2 + 4, pos[1] - 4); | |
1632 | pos += 2 + pos[1]; | |
1633 | } | |
1634 | ||
1635 | if (wpabuf_len(buf) == 0) { | |
1636 | wpabuf_free(buf); | |
1637 | buf = NULL; | |
1638 | } | |
1639 | ||
1640 | return buf; | |
1641 | } | |
1642 | ||
1643 | ||
577db0ae GM |
1644 | /* |
1645 | * Channels with a great SNR can operate at full rate. What is a great SNR? | |
1646 | * This doc https://supportforums.cisco.com/docs/DOC-12954 says, "the general | |
1647 | * rule of thumb is that any SNR above 20 is good." This one | |
1648 | * http://www.cisco.com/en/US/tech/tk722/tk809/technologies_q_and_a_item09186a00805e9a96.shtml#qa23 | |
1649 | * recommends 25 as a minimum SNR for 54 Mbps data rate. 30 is chosen here as a | |
1650 | * conservative value. | |
1651 | */ | |
1652 | #define GREAT_SNR 30 | |
1653 | ||
f0d0a5d2 MA |
1654 | #define IS_5GHZ(n) (n > 4000) |
1655 | ||
9ba9fa07 JM |
1656 | /* Compare function for sorting scan results. Return >0 if @b is considered |
1657 | * better. */ | |
1658 | static int wpa_scan_result_compar(const void *a, const void *b) | |
1659 | { | |
577db0ae | 1660 | #define MIN(a,b) a < b ? a : b |
9ba9fa07 JM |
1661 | struct wpa_scan_res **_wa = (void *) a; |
1662 | struct wpa_scan_res **_wb = (void *) b; | |
1663 | struct wpa_scan_res *wa = *_wa; | |
1664 | struct wpa_scan_res *wb = *_wb; | |
a1b790eb JM |
1665 | int wpa_a, wpa_b; |
1666 | int snr_a, snr_b, snr_a_full, snr_b_full; | |
9ba9fa07 JM |
1667 | |
1668 | /* WPA/WPA2 support preferred */ | |
1669 | wpa_a = wpa_scan_get_vendor_ie(wa, WPA_IE_VENDOR_TYPE) != NULL || | |
1670 | wpa_scan_get_ie(wa, WLAN_EID_RSN) != NULL; | |
1671 | wpa_b = wpa_scan_get_vendor_ie(wb, WPA_IE_VENDOR_TYPE) != NULL || | |
1672 | wpa_scan_get_ie(wb, WLAN_EID_RSN) != NULL; | |
1673 | ||
1674 | if (wpa_b && !wpa_a) | |
1675 | return 1; | |
1676 | if (!wpa_b && wpa_a) | |
1677 | return -1; | |
1678 | ||
1679 | /* privacy support preferred */ | |
1680 | if ((wa->caps & IEEE80211_CAP_PRIVACY) == 0 && | |
1681 | (wb->caps & IEEE80211_CAP_PRIVACY)) | |
1682 | return 1; | |
1683 | if ((wa->caps & IEEE80211_CAP_PRIVACY) && | |
1684 | (wb->caps & IEEE80211_CAP_PRIVACY) == 0) | |
1685 | return -1; | |
1686 | ||
f0d0a5d2 | 1687 | if (wa->flags & wb->flags & WPA_SCAN_LEVEL_DBM) { |
a1b790eb JM |
1688 | snr_a_full = wa->snr; |
1689 | snr_a = MIN(wa->snr, GREAT_SNR); | |
1690 | snr_b_full = wb->snr; | |
aa517ae2 | 1691 | snr_b = MIN(wb->snr, GREAT_SNR); |
577db0ae | 1692 | } else { |
f0d0a5d2 MA |
1693 | /* Level is not in dBm, so we can't calculate |
1694 | * SNR. Just use raw level (units unknown). */ | |
a1b790eb JM |
1695 | snr_a = snr_a_full = wa->level; |
1696 | snr_b = snr_b_full = wb->level; | |
577db0ae GM |
1697 | } |
1698 | ||
f0d0a5d2 MA |
1699 | /* if SNR is close, decide by max rate or frequency band */ |
1700 | if ((snr_a && snr_b && abs(snr_b - snr_a) < 5) || | |
9ba9fa07 | 1701 | (wa->qual && wb->qual && abs(wb->qual - wa->qual) < 10)) { |
a1b790eb JM |
1702 | if (wa->est_throughput != wb->est_throughput) |
1703 | return wb->est_throughput - wa->est_throughput; | |
577db0ae GM |
1704 | if (IS_5GHZ(wa->freq) ^ IS_5GHZ(wb->freq)) |
1705 | return IS_5GHZ(wa->freq) ? -1 : 1; | |
9ba9fa07 JM |
1706 | } |
1707 | ||
577db0ae | 1708 | /* all things being equal, use SNR; if SNRs are |
9ba9fa07 JM |
1709 | * identical, use quality values since some drivers may only report |
1710 | * that value and leave the signal level zero */ | |
a1b790eb | 1711 | if (snr_b_full == snr_a_full) |
9ba9fa07 | 1712 | return wb->qual - wa->qual; |
a1b790eb | 1713 | return snr_b_full - snr_a_full; |
577db0ae | 1714 | #undef MIN |
9ba9fa07 JM |
1715 | } |
1716 | ||
1717 | ||
41e650ae JM |
1718 | #ifdef CONFIG_WPS |
1719 | /* Compare function for sorting scan results when searching a WPS AP for | |
1720 | * provisioning. Return >0 if @b is considered better. */ | |
1721 | static int wpa_scan_result_wps_compar(const void *a, const void *b) | |
1722 | { | |
1723 | struct wpa_scan_res **_wa = (void *) a; | |
1724 | struct wpa_scan_res **_wb = (void *) b; | |
1725 | struct wpa_scan_res *wa = *_wa; | |
1726 | struct wpa_scan_res *wb = *_wb; | |
1727 | int uses_wps_a, uses_wps_b; | |
1728 | struct wpabuf *wps_a, *wps_b; | |
1729 | int res; | |
1730 | ||
1731 | /* Optimization - check WPS IE existence before allocated memory and | |
1732 | * doing full reassembly. */ | |
1733 | uses_wps_a = wpa_scan_get_vendor_ie(wa, WPS_IE_VENDOR_TYPE) != NULL; | |
1734 | uses_wps_b = wpa_scan_get_vendor_ie(wb, WPS_IE_VENDOR_TYPE) != NULL; | |
1735 | if (uses_wps_a && !uses_wps_b) | |
1736 | return -1; | |
1737 | if (!uses_wps_a && uses_wps_b) | |
1738 | return 1; | |
1739 | ||
1740 | if (uses_wps_a && uses_wps_b) { | |
1741 | wps_a = wpa_scan_get_vendor_ie_multi(wa, WPS_IE_VENDOR_TYPE); | |
1742 | wps_b = wpa_scan_get_vendor_ie_multi(wb, WPS_IE_VENDOR_TYPE); | |
1743 | res = wps_ap_priority_compar(wps_a, wps_b); | |
1744 | wpabuf_free(wps_a); | |
1745 | wpabuf_free(wps_b); | |
1746 | if (res) | |
1747 | return res; | |
1748 | } | |
1749 | ||
1750 | /* | |
1751 | * Do not use current AP security policy as a sorting criteria during | |
1752 | * WPS provisioning step since the AP may get reconfigured at the | |
1753 | * completion of provisioning. | |
1754 | */ | |
1755 | ||
1756 | /* all things being equal, use signal level; if signal levels are | |
1757 | * identical, use quality values since some drivers may only report | |
1758 | * that value and leave the signal level zero */ | |
1759 | if (wb->level == wa->level) | |
1760 | return wb->qual - wa->qual; | |
1761 | return wb->level - wa->level; | |
1762 | } | |
1763 | #endif /* CONFIG_WPS */ | |
1764 | ||
1765 | ||
aa820e02 JM |
1766 | static void dump_scan_res(struct wpa_scan_results *scan_res) |
1767 | { | |
76202aed | 1768 | #ifndef CONFIG_NO_STDOUT_DEBUG |
aa820e02 JM |
1769 | size_t i; |
1770 | ||
1771 | if (scan_res->res == NULL || scan_res->num == 0) | |
1772 | return; | |
1773 | ||
1774 | wpa_printf(MSG_EXCESSIVE, "Sorted scan results"); | |
1775 | ||
1776 | for (i = 0; i < scan_res->num; i++) { | |
1777 | struct wpa_scan_res *r = scan_res->res[i]; | |
1cbe86e2 | 1778 | u8 *pos; |
f0d0a5d2 | 1779 | if (r->flags & WPA_SCAN_LEVEL_DBM) { |
f0d0a5d2 MA |
1780 | int noise_valid = !(r->flags & WPA_SCAN_NOISE_INVALID); |
1781 | ||
aa820e02 | 1782 | wpa_printf(MSG_EXCESSIVE, MACSTR " freq=%d qual=%d " |
a1b790eb | 1783 | "noise=%d%s level=%d snr=%d%s flags=0x%x age=%u est=%u", |
aa820e02 | 1784 | MAC2STR(r->bssid), r->freq, r->qual, |
f0d0a5d2 | 1785 | r->noise, noise_valid ? "" : "~", r->level, |
a1b790eb JM |
1786 | r->snr, r->snr >= GREAT_SNR ? "*" : "", |
1787 | r->flags, | |
1788 | r->age, r->est_throughput); | |
aa820e02 JM |
1789 | } else { |
1790 | wpa_printf(MSG_EXCESSIVE, MACSTR " freq=%d qual=%d " | |
a1b790eb | 1791 | "noise=%d level=%d flags=0x%x age=%u est=%u", |
aa820e02 | 1792 | MAC2STR(r->bssid), r->freq, r->qual, |
a1b790eb JM |
1793 | r->noise, r->level, r->flags, r->age, |
1794 | r->est_throughput); | |
aa820e02 | 1795 | } |
1cbe86e2 JM |
1796 | pos = (u8 *) (r + 1); |
1797 | if (r->ie_len) | |
1798 | wpa_hexdump(MSG_EXCESSIVE, "IEs", pos, r->ie_len); | |
1799 | pos += r->ie_len; | |
1800 | if (r->beacon_ie_len) | |
1801 | wpa_hexdump(MSG_EXCESSIVE, "Beacon IEs", | |
1802 | pos, r->beacon_ie_len); | |
aa820e02 | 1803 | } |
76202aed | 1804 | #endif /* CONFIG_NO_STDOUT_DEBUG */ |
aa820e02 JM |
1805 | } |
1806 | ||
1807 | ||
2c09af30 JM |
1808 | /** |
1809 | * wpa_supplicant_filter_bssid_match - Is the specified BSSID allowed | |
1810 | * @wpa_s: Pointer to wpa_supplicant data | |
1811 | * @bssid: BSSID to check | |
1812 | * Returns: 0 if the BSSID is filtered or 1 if not | |
1813 | * | |
1814 | * This function is used to filter out specific BSSIDs from scan reslts mainly | |
1815 | * for testing purposes (SET bssid_filter ctrl_iface command). | |
1816 | */ | |
d445a5cd JM |
1817 | int wpa_supplicant_filter_bssid_match(struct wpa_supplicant *wpa_s, |
1818 | const u8 *bssid) | |
1819 | { | |
1820 | size_t i; | |
1821 | ||
1822 | if (wpa_s->bssid_filter == NULL) | |
1823 | return 1; | |
1824 | ||
1825 | for (i = 0; i < wpa_s->bssid_filter_count; i++) { | |
1826 | if (os_memcmp(wpa_s->bssid_filter + i * ETH_ALEN, bssid, | |
1827 | ETH_ALEN) == 0) | |
1828 | return 1; | |
1829 | } | |
1830 | ||
1831 | return 0; | |
1832 | } | |
1833 | ||
1834 | ||
1835 | static void filter_scan_res(struct wpa_supplicant *wpa_s, | |
1836 | struct wpa_scan_results *res) | |
1837 | { | |
1838 | size_t i, j; | |
1839 | ||
1840 | if (wpa_s->bssid_filter == NULL) | |
1841 | return; | |
1842 | ||
1843 | for (i = 0, j = 0; i < res->num; i++) { | |
1844 | if (wpa_supplicant_filter_bssid_match(wpa_s, | |
1845 | res->res[i]->bssid)) { | |
1846 | res->res[j++] = res->res[i]; | |
1847 | } else { | |
1848 | os_free(res->res[i]); | |
1849 | res->res[i] = NULL; | |
1850 | } | |
1851 | } | |
1852 | ||
1853 | if (res->num != j) { | |
1854 | wpa_printf(MSG_DEBUG, "Filtered out %d scan results", | |
1855 | (int) (res->num - j)); | |
1856 | res->num = j; | |
1857 | } | |
1858 | } | |
1859 | ||
1860 | ||
f0d0a5d2 MA |
1861 | /* |
1862 | * Noise floor values to use when we have signal strength | |
1863 | * measurements, but no noise floor measurments. These values were | |
1864 | * measured in an office environment with many APs. | |
1865 | */ | |
1866 | #define DEFAULT_NOISE_FLOOR_2GHZ (-89) | |
1867 | #define DEFAULT_NOISE_FLOOR_5GHZ (-92) | |
1868 | ||
a1b790eb JM |
1869 | static void scan_snr(struct wpa_scan_res *res) |
1870 | { | |
1871 | if (res->flags & WPA_SCAN_NOISE_INVALID) { | |
1872 | res->noise = IS_5GHZ(res->freq) ? | |
1873 | DEFAULT_NOISE_FLOOR_5GHZ : | |
1874 | DEFAULT_NOISE_FLOOR_2GHZ; | |
1875 | } | |
1876 | ||
1877 | if (res->flags & WPA_SCAN_LEVEL_DBM) { | |
1878 | res->snr = res->level - res->noise; | |
1879 | } else { | |
1880 | /* Level is not in dBm, so we can't calculate | |
1881 | * SNR. Just use raw level (units unknown). */ | |
1882 | res->snr = res->level; | |
1883 | } | |
1884 | } | |
1885 | ||
1886 | ||
1887 | static unsigned int max_ht20_rate(int snr) | |
1888 | { | |
1889 | if (snr < 6) | |
1890 | return 6500; /* HT20 MCS0 */ | |
1891 | if (snr < 8) | |
1892 | return 13000; /* HT20 MCS1 */ | |
1893 | if (snr < 13) | |
1894 | return 19500; /* HT20 MCS2 */ | |
1895 | if (snr < 17) | |
1896 | return 26000; /* HT20 MCS3 */ | |
1897 | if (snr < 20) | |
1898 | return 39000; /* HT20 MCS4 */ | |
1899 | if (snr < 23) | |
1900 | return 52000; /* HT20 MCS5 */ | |
1901 | if (snr < 24) | |
1902 | return 58500; /* HT20 MCS6 */ | |
1903 | return 65000; /* HT20 MCS7 */ | |
1904 | } | |
1905 | ||
1906 | ||
1907 | static unsigned int max_ht40_rate(int snr) | |
1908 | { | |
1909 | if (snr < 3) | |
1910 | return 13500; /* HT40 MCS0 */ | |
1911 | if (snr < 6) | |
1912 | return 27000; /* HT40 MCS1 */ | |
1913 | if (snr < 10) | |
1914 | return 40500; /* HT40 MCS2 */ | |
1915 | if (snr < 15) | |
1916 | return 54000; /* HT40 MCS3 */ | |
1917 | if (snr < 17) | |
1918 | return 81000; /* HT40 MCS4 */ | |
1919 | if (snr < 22) | |
1920 | return 108000; /* HT40 MCS5 */ | |
8b2b718d | 1921 | if (snr < 24) |
a1b790eb JM |
1922 | return 121500; /* HT40 MCS6 */ |
1923 | return 135000; /* HT40 MCS7 */ | |
1924 | } | |
1925 | ||
1926 | ||
1927 | static unsigned int max_vht80_rate(int snr) | |
1928 | { | |
1929 | if (snr < 1) | |
1930 | return 0; | |
1931 | if (snr < 2) | |
1932 | return 29300; /* VHT80 MCS0 */ | |
1933 | if (snr < 5) | |
1934 | return 58500; /* VHT80 MCS1 */ | |
1935 | if (snr < 9) | |
1936 | return 87800; /* VHT80 MCS2 */ | |
1937 | if (snr < 11) | |
1938 | return 117000; /* VHT80 MCS3 */ | |
1939 | if (snr < 15) | |
1940 | return 175500; /* VHT80 MCS4 */ | |
1941 | if (snr < 16) | |
1942 | return 234000; /* VHT80 MCS5 */ | |
1943 | if (snr < 18) | |
1944 | return 263300; /* VHT80 MCS6 */ | |
1945 | if (snr < 20) | |
1946 | return 292500; /* VHT80 MCS7 */ | |
1947 | if (snr < 22) | |
1948 | return 351000; /* VHT80 MCS8 */ | |
1949 | return 390000; /* VHT80 MCS9 */ | |
1950 | } | |
1951 | ||
1952 | ||
1953 | static void scan_est_throughput(struct wpa_supplicant *wpa_s, | |
1954 | struct wpa_scan_res *res) | |
1955 | { | |
1956 | enum local_hw_capab capab = wpa_s->hw_capab; | |
1957 | int rate; /* max legacy rate in 500 kb/s units */ | |
1958 | const u8 *ie; | |
1959 | unsigned int est, tmp; | |
1960 | int snr = res->snr; | |
1961 | ||
1962 | if (res->est_throughput) | |
1963 | return; | |
1964 | ||
1965 | /* Get maximum legacy rate */ | |
1966 | rate = wpa_scan_get_max_rate(res); | |
1967 | ||
1968 | /* Limit based on estimated SNR */ | |
1969 | if (rate > 1 * 2 && snr < 1) | |
1970 | rate = 1 * 2; | |
1971 | else if (rate > 2 * 2 && snr < 4) | |
1972 | rate = 2 * 2; | |
1973 | else if (rate > 6 * 2 && snr < 5) | |
1974 | rate = 6 * 2; | |
1975 | else if (rate > 9 * 2 && snr < 6) | |
1976 | rate = 9 * 2; | |
1977 | else if (rate > 12 * 2 && snr < 7) | |
1978 | rate = 12 * 2; | |
1979 | else if (rate > 18 * 2 && snr < 10) | |
1980 | rate = 18 * 2; | |
1981 | else if (rate > 24 * 2 && snr < 11) | |
1982 | rate = 24 * 2; | |
1983 | else if (rate > 36 * 2 && snr < 15) | |
1984 | rate = 36 * 2; | |
1985 | else if (rate > 48 * 2 && snr < 19) | |
1986 | rate = 48 * 2; | |
1987 | else if (rate > 54 * 2 && snr < 21) | |
1988 | rate = 54 * 2; | |
1989 | est = rate * 500; | |
1990 | ||
1991 | if (capab == CAPAB_HT || capab == CAPAB_HT40 || capab == CAPAB_VHT) { | |
1992 | ie = wpa_scan_get_ie(res, WLAN_EID_HT_CAP); | |
1993 | if (ie) { | |
1994 | tmp = max_ht20_rate(snr); | |
1995 | if (tmp > est) | |
1996 | est = tmp; | |
1997 | } | |
1998 | } | |
1999 | ||
2000 | if (capab == CAPAB_HT40 || capab == CAPAB_VHT) { | |
2001 | ie = wpa_scan_get_ie(res, WLAN_EID_HT_OPERATION); | |
2002 | if (ie && ie[1] >= 2 && | |
2003 | (ie[3] & HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK)) { | |
2004 | tmp = max_ht40_rate(snr); | |
2005 | if (tmp > est) | |
2006 | est = tmp; | |
2007 | } | |
2008 | } | |
2009 | ||
2010 | if (capab == CAPAB_VHT) { | |
2011 | /* Use +1 to assume VHT is always faster than HT */ | |
2012 | ie = wpa_scan_get_ie(res, WLAN_EID_VHT_CAP); | |
2013 | if (ie) { | |
2014 | tmp = max_ht20_rate(snr) + 1; | |
2015 | if (tmp > est) | |
2016 | est = tmp; | |
2017 | ||
2018 | ie = wpa_scan_get_ie(res, WLAN_EID_HT_OPERATION); | |
2019 | if (ie && ie[1] >= 2 && | |
2020 | (ie[3] & | |
2021 | HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK)) { | |
2022 | tmp = max_ht40_rate(snr) + 1; | |
2023 | if (tmp > est) | |
2024 | est = tmp; | |
2025 | } | |
2026 | ||
2027 | ie = wpa_scan_get_ie(res, WLAN_EID_VHT_OPERATION); | |
2028 | if (ie && ie[1] >= 1 && | |
2029 | (ie[2] & VHT_OPMODE_CHANNEL_WIDTH_MASK)) { | |
2030 | tmp = max_vht80_rate(snr) + 1; | |
2031 | if (tmp > est) | |
2032 | est = tmp; | |
2033 | } | |
2034 | } | |
2035 | } | |
2036 | ||
2037 | /* TODO: channel utilization and AP load (e.g., from AP Beacon) */ | |
2038 | ||
2039 | res->est_throughput = est; | |
2040 | } | |
2041 | ||
2042 | ||
9ba9fa07 JM |
2043 | /** |
2044 | * wpa_supplicant_get_scan_results - Get scan results | |
2045 | * @wpa_s: Pointer to wpa_supplicant data | |
2046 | * @info: Information about what was scanned or %NULL if not available | |
2047 | * @new_scan: Whether a new scan was performed | |
2048 | * Returns: Scan results, %NULL on failure | |
2049 | * | |
2050 | * This function request the current scan results from the driver and updates | |
2051 | * the local BSS list wpa_s->bss. The caller is responsible for freeing the | |
2052 | * results with wpa_scan_results_free(). | |
2053 | */ | |
2054 | struct wpa_scan_results * | |
2055 | wpa_supplicant_get_scan_results(struct wpa_supplicant *wpa_s, | |
2056 | struct scan_info *info, int new_scan) | |
2057 | { | |
2058 | struct wpa_scan_results *scan_res; | |
2059 | size_t i; | |
41e650ae | 2060 | int (*compar)(const void *, const void *) = wpa_scan_result_compar; |
9ba9fa07 | 2061 | |
17fbb751 | 2062 | scan_res = wpa_drv_get_scan_results2(wpa_s); |
9ba9fa07 | 2063 | if (scan_res == NULL) { |
f049052b | 2064 | wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results"); |
9ba9fa07 JM |
2065 | return NULL; |
2066 | } | |
c5f10e80 JM |
2067 | if (scan_res->fetch_time.sec == 0) { |
2068 | /* | |
2069 | * Make sure we have a valid timestamp if the driver wrapper | |
2070 | * does not set this. | |
2071 | */ | |
acb69cec | 2072 | os_get_reltime(&scan_res->fetch_time); |
c5f10e80 | 2073 | } |
d445a5cd | 2074 | filter_scan_res(wpa_s, scan_res); |
9ba9fa07 | 2075 | |
f0d0a5d2 MA |
2076 | for (i = 0; i < scan_res->num; i++) { |
2077 | struct wpa_scan_res *scan_res_item = scan_res->res[i]; | |
2078 | ||
a1b790eb JM |
2079 | scan_snr(scan_res_item); |
2080 | scan_est_throughput(wpa_s, scan_res_item); | |
f0d0a5d2 MA |
2081 | } |
2082 | ||
41e650ae | 2083 | #ifdef CONFIG_WPS |
3187fd90 | 2084 | if (wpas_wps_searching(wpa_s)) { |
f049052b BG |
2085 | wpa_dbg(wpa_s, MSG_DEBUG, "WPS: Order scan results with WPS " |
2086 | "provisioning rules"); | |
41e650ae JM |
2087 | compar = wpa_scan_result_wps_compar; |
2088 | } | |
2089 | #endif /* CONFIG_WPS */ | |
2090 | ||
9ba9fa07 | 2091 | qsort(scan_res->res, scan_res->num, sizeof(struct wpa_scan_res *), |
41e650ae | 2092 | compar); |
aa820e02 | 2093 | dump_scan_res(scan_res); |
9ba9fa07 JM |
2094 | |
2095 | wpa_bss_update_start(wpa_s); | |
2096 | for (i = 0; i < scan_res->num; i++) | |
c5f10e80 JM |
2097 | wpa_bss_update_scan_res(wpa_s, scan_res->res[i], |
2098 | &scan_res->fetch_time); | |
9ba9fa07 JM |
2099 | wpa_bss_update_end(wpa_s, info, new_scan); |
2100 | ||
2101 | return scan_res; | |
2102 | } | |
2103 | ||
2104 | ||
2c09af30 JM |
2105 | /** |
2106 | * wpa_supplicant_update_scan_results - Update scan results from the driver | |
2107 | * @wpa_s: Pointer to wpa_supplicant data | |
2108 | * Returns: 0 on success, -1 on failure | |
2109 | * | |
2110 | * This function updates the BSS table within wpa_supplicant based on the | |
2111 | * currently available scan results from the driver without requesting a new | |
2112 | * scan. This is used in cases where the driver indicates an association | |
2113 | * (including roaming within ESS) and wpa_supplicant does not yet have the | |
2114 | * needed information to complete the connection (e.g., to perform validation | |
2115 | * steps in 4-way handshake). | |
2116 | */ | |
9ba9fa07 JM |
2117 | int wpa_supplicant_update_scan_results(struct wpa_supplicant *wpa_s) |
2118 | { | |
2119 | struct wpa_scan_results *scan_res; | |
2120 | scan_res = wpa_supplicant_get_scan_results(wpa_s, NULL, 0); | |
2121 | if (scan_res == NULL) | |
2122 | return -1; | |
2123 | wpa_scan_results_free(scan_res); | |
2124 | ||
2125 | return 0; | |
2126 | } | |
66fe0f70 DS |
2127 | |
2128 | ||
2129 | /** | |
2130 | * scan_only_handler - Reports scan results | |
2131 | */ | |
2132 | void scan_only_handler(struct wpa_supplicant *wpa_s, | |
2133 | struct wpa_scan_results *scan_res) | |
2134 | { | |
2135 | wpa_dbg(wpa_s, MSG_DEBUG, "Scan-only results received"); | |
d81c73be JM |
2136 | if (wpa_s->last_scan_req == MANUAL_SCAN_REQ && |
2137 | wpa_s->manual_scan_use_id && wpa_s->own_scan_running) { | |
2138 | wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS "id=%u", | |
2139 | wpa_s->manual_scan_id); | |
2140 | wpa_s->manual_scan_use_id = 0; | |
2141 | } else { | |
2142 | wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS); | |
2143 | } | |
66fe0f70 DS |
2144 | wpas_notify_scan_results(wpa_s); |
2145 | wpas_notify_scan_done(wpa_s, 1); | |
d12a51b5 JM |
2146 | if (wpa_s->scan_work) { |
2147 | struct wpa_radio_work *work = wpa_s->scan_work; | |
2148 | wpa_s->scan_work = NULL; | |
2149 | radio_work_done(work); | |
2150 | } | |
ea6030c7 JM |
2151 | |
2152 | if (wpa_s->wpa_state == WPA_SCANNING) | |
2153 | wpa_supplicant_set_state(wpa_s, wpa_s->scan_prev_wpa_state); | |
66fe0f70 | 2154 | } |
407be00b JM |
2155 | |
2156 | ||
2157 | int wpas_scan_scheduled(struct wpa_supplicant *wpa_s) | |
2158 | { | |
2159 | return eloop_is_timeout_registered(wpa_supplicant_scan, wpa_s, NULL); | |
2160 | } | |
dd43aaa5 JM |
2161 | |
2162 | ||
2163 | struct wpa_driver_scan_params * | |
2164 | wpa_scan_clone_params(const struct wpa_driver_scan_params *src) | |
2165 | { | |
2166 | struct wpa_driver_scan_params *params; | |
2167 | size_t i; | |
2168 | u8 *n; | |
2169 | ||
2170 | params = os_zalloc(sizeof(*params)); | |
2171 | if (params == NULL) | |
2172 | return NULL; | |
2173 | ||
2174 | for (i = 0; i < src->num_ssids; i++) { | |
2175 | if (src->ssids[i].ssid) { | |
2176 | n = os_malloc(src->ssids[i].ssid_len); | |
2177 | if (n == NULL) | |
2178 | goto failed; | |
2179 | os_memcpy(n, src->ssids[i].ssid, | |
2180 | src->ssids[i].ssid_len); | |
2181 | params->ssids[i].ssid = n; | |
2182 | params->ssids[i].ssid_len = src->ssids[i].ssid_len; | |
2183 | } | |
2184 | } | |
2185 | params->num_ssids = src->num_ssids; | |
2186 | ||
2187 | if (src->extra_ies) { | |
2188 | n = os_malloc(src->extra_ies_len); | |
2189 | if (n == NULL) | |
2190 | goto failed; | |
2191 | os_memcpy(n, src->extra_ies, src->extra_ies_len); | |
2192 | params->extra_ies = n; | |
2193 | params->extra_ies_len = src->extra_ies_len; | |
2194 | } | |
2195 | ||
2196 | if (src->freqs) { | |
2197 | int len = int_array_len(src->freqs); | |
2198 | params->freqs = os_malloc((len + 1) * sizeof(int)); | |
2199 | if (params->freqs == NULL) | |
2200 | goto failed; | |
2201 | os_memcpy(params->freqs, src->freqs, (len + 1) * sizeof(int)); | |
2202 | } | |
2203 | ||
2204 | if (src->filter_ssids) { | |
fd67275b | 2205 | params->filter_ssids = os_malloc(sizeof(*params->filter_ssids) * |
dd43aaa5 JM |
2206 | src->num_filter_ssids); |
2207 | if (params->filter_ssids == NULL) | |
2208 | goto failed; | |
2209 | os_memcpy(params->filter_ssids, src->filter_ssids, | |
fd67275b EL |
2210 | sizeof(*params->filter_ssids) * |
2211 | src->num_filter_ssids); | |
dd43aaa5 JM |
2212 | params->num_filter_ssids = src->num_filter_ssids; |
2213 | } | |
2214 | ||
2215 | params->filter_rssi = src->filter_rssi; | |
2216 | params->p2p_probe = src->p2p_probe; | |
2217 | params->only_new_results = src->only_new_results; | |
57a8f8af | 2218 | params->low_priority = src->low_priority; |
dd43aaa5 | 2219 | |
56c76fa5 IP |
2220 | if (src->mac_addr_rand) { |
2221 | params->mac_addr_rand = src->mac_addr_rand; | |
2222 | ||
2223 | if (src->mac_addr && src->mac_addr_mask) { | |
2224 | u8 *mac_addr; | |
2225 | ||
2226 | mac_addr = os_malloc(2 * ETH_ALEN); | |
2227 | if (!mac_addr) | |
2228 | goto failed; | |
2229 | ||
2230 | os_memcpy(mac_addr, src->mac_addr, ETH_ALEN); | |
2231 | os_memcpy(mac_addr + ETH_ALEN, src->mac_addr_mask, | |
2232 | ETH_ALEN); | |
2233 | params->mac_addr = mac_addr; | |
2234 | params->mac_addr_mask = mac_addr + ETH_ALEN; | |
2235 | } | |
2236 | } | |
dd43aaa5 JM |
2237 | return params; |
2238 | ||
2239 | failed: | |
2240 | wpa_scan_free_params(params); | |
2241 | return NULL; | |
2242 | } | |
2243 | ||
2244 | ||
2245 | void wpa_scan_free_params(struct wpa_driver_scan_params *params) | |
2246 | { | |
2247 | size_t i; | |
2248 | ||
2249 | if (params == NULL) | |
2250 | return; | |
2251 | ||
2252 | for (i = 0; i < params->num_ssids; i++) | |
2253 | os_free((u8 *) params->ssids[i].ssid); | |
2254 | os_free((u8 *) params->extra_ies); | |
2255 | os_free(params->freqs); | |
2256 | os_free(params->filter_ssids); | |
56c76fa5 IP |
2257 | |
2258 | /* | |
2259 | * Note: params->mac_addr_mask points to same memory allocation and | |
2260 | * must not be freed separately. | |
2261 | */ | |
2262 | os_free((u8 *) params->mac_addr); | |
2263 | ||
dd43aaa5 JM |
2264 | os_free(params); |
2265 | } | |
737e7a08 AB |
2266 | |
2267 | ||
2268 | int wpas_start_pno(struct wpa_supplicant *wpa_s) | |
2269 | { | |
6f5e1b0b | 2270 | int ret, interval, prio; |
4ed34922 | 2271 | size_t i, num_ssid, num_match_ssid; |
737e7a08 AB |
2272 | struct wpa_ssid *ssid; |
2273 | struct wpa_driver_scan_params params; | |
2274 | ||
5e3ddf4d AB |
2275 | if (!wpa_s->sched_scan_supported) |
2276 | return -1; | |
2277 | ||
737e7a08 AB |
2278 | if (wpa_s->pno || wpa_s->pno_sched_pending) |
2279 | return 0; | |
2280 | ||
2281 | if ((wpa_s->wpa_state > WPA_SCANNING) && | |
2282 | (wpa_s->wpa_state <= WPA_COMPLETED)) { | |
2283 | wpa_printf(MSG_ERROR, "PNO: In assoc process"); | |
2284 | return -EAGAIN; | |
2285 | } | |
2286 | ||
2287 | if (wpa_s->wpa_state == WPA_SCANNING) { | |
2288 | wpa_supplicant_cancel_scan(wpa_s); | |
2289 | if (wpa_s->sched_scanning) { | |
2290 | wpa_printf(MSG_DEBUG, "Schedule PNO on completion of " | |
2291 | "ongoing sched scan"); | |
2292 | wpa_supplicant_cancel_sched_scan(wpa_s); | |
2293 | wpa_s->pno_sched_pending = 1; | |
2294 | return 0; | |
2295 | } | |
2296 | } | |
2297 | ||
2298 | os_memset(¶ms, 0, sizeof(params)); | |
2299 | ||
4ed34922 | 2300 | num_ssid = num_match_ssid = 0; |
737e7a08 AB |
2301 | ssid = wpa_s->conf->ssid; |
2302 | while (ssid) { | |
4ed34922 DS |
2303 | if (!wpas_network_disabled(wpa_s, ssid)) { |
2304 | num_match_ssid++; | |
2305 | if (ssid->scan_ssid) | |
2306 | num_ssid++; | |
2307 | } | |
737e7a08 AB |
2308 | ssid = ssid->next; |
2309 | } | |
4ed34922 DS |
2310 | |
2311 | if (num_match_ssid == 0) { | |
2312 | wpa_printf(MSG_DEBUG, "PNO: No configured SSIDs"); | |
2313 | return -1; | |
2314 | } | |
2315 | ||
2316 | if (num_match_ssid > num_ssid) { | |
2317 | params.num_ssids++; /* wildcard */ | |
2318 | num_ssid++; | |
2319 | } | |
2320 | ||
737e7a08 AB |
2321 | if (num_ssid > WPAS_MAX_SCAN_SSIDS) { |
2322 | wpa_printf(MSG_DEBUG, "PNO: Use only the first %u SSIDs from " | |
2323 | "%u", WPAS_MAX_SCAN_SSIDS, (unsigned int) num_ssid); | |
2324 | num_ssid = WPAS_MAX_SCAN_SSIDS; | |
2325 | } | |
2326 | ||
4ed34922 DS |
2327 | if (num_match_ssid > wpa_s->max_match_sets) { |
2328 | num_match_ssid = wpa_s->max_match_sets; | |
2329 | wpa_dbg(wpa_s, MSG_DEBUG, "PNO: Too many SSIDs to match"); | |
737e7a08 | 2330 | } |
4ed34922 DS |
2331 | params.filter_ssids = os_calloc(num_match_ssid, |
2332 | sizeof(struct wpa_driver_scan_filter)); | |
737e7a08 AB |
2333 | if (params.filter_ssids == NULL) |
2334 | return -1; | |
6f5e1b0b | 2335 | |
737e7a08 | 2336 | i = 0; |
6f5e1b0b DS |
2337 | prio = 0; |
2338 | ssid = wpa_s->conf->pssid[prio]; | |
737e7a08 AB |
2339 | while (ssid) { |
2340 | if (!wpas_network_disabled(wpa_s, ssid)) { | |
4ed34922 DS |
2341 | if (ssid->scan_ssid && params.num_ssids < num_ssid) { |
2342 | params.ssids[params.num_ssids].ssid = | |
2343 | ssid->ssid; | |
2344 | params.ssids[params.num_ssids].ssid_len = | |
2345 | ssid->ssid_len; | |
2346 | params.num_ssids++; | |
2347 | } | |
737e7a08 AB |
2348 | os_memcpy(params.filter_ssids[i].ssid, ssid->ssid, |
2349 | ssid->ssid_len); | |
2350 | params.filter_ssids[i].ssid_len = ssid->ssid_len; | |
2351 | params.num_filter_ssids++; | |
2352 | i++; | |
4ed34922 | 2353 | if (i == num_match_ssid) |
737e7a08 AB |
2354 | break; |
2355 | } | |
6f5e1b0b DS |
2356 | if (ssid->pnext) |
2357 | ssid = ssid->pnext; | |
2358 | else if (prio + 1 == wpa_s->conf->num_prio) | |
2359 | break; | |
2360 | else | |
2361 | ssid = wpa_s->conf->pssid[++prio]; | |
737e7a08 AB |
2362 | } |
2363 | ||
2364 | if (wpa_s->conf->filter_rssi) | |
2365 | params.filter_rssi = wpa_s->conf->filter_rssi; | |
2366 | ||
2367 | interval = wpa_s->conf->sched_scan_interval ? | |
2368 | wpa_s->conf->sched_scan_interval : 10; | |
2369 | ||
d3c9c35f DS |
2370 | if (params.freqs == NULL && wpa_s->manual_sched_scan_freqs) { |
2371 | wpa_dbg(wpa_s, MSG_DEBUG, "Limit sched scan to specified channels"); | |
2372 | params.freqs = wpa_s->manual_sched_scan_freqs; | |
2373 | } | |
2374 | ||
56c76fa5 IP |
2375 | if (wpa_s->mac_addr_rand_enable & MAC_ADDR_RAND_PNO) { |
2376 | params.mac_addr_rand = 1; | |
2377 | if (wpa_s->mac_addr_pno) { | |
2378 | params.mac_addr = wpa_s->mac_addr_pno; | |
2379 | params.mac_addr_mask = wpa_s->mac_addr_pno + ETH_ALEN; | |
2380 | } | |
2381 | } | |
2382 | ||
737e7a08 AB |
2383 | ret = wpa_supplicant_start_sched_scan(wpa_s, ¶ms, interval); |
2384 | os_free(params.filter_ssids); | |
2385 | if (ret == 0) | |
2386 | wpa_s->pno = 1; | |
5e3ddf4d AB |
2387 | else |
2388 | wpa_msg(wpa_s, MSG_ERROR, "Failed to schedule PNO"); | |
737e7a08 AB |
2389 | return ret; |
2390 | } | |
2391 | ||
2392 | ||
2393 | int wpas_stop_pno(struct wpa_supplicant *wpa_s) | |
2394 | { | |
2395 | int ret = 0; | |
2396 | ||
5e3ddf4d AB |
2397 | if (!wpa_s->pno) |
2398 | return 0; | |
2399 | ||
2400 | ret = wpa_supplicant_stop_sched_scan(wpa_s); | |
737e7a08 | 2401 | |
5e3ddf4d | 2402 | wpa_s->pno = 0; |
737e7a08 AB |
2403 | wpa_s->pno_sched_pending = 0; |
2404 | ||
2405 | if (wpa_s->wpa_state == WPA_SCANNING) | |
2406 | wpa_supplicant_req_scan(wpa_s, 0, 0); | |
2407 | ||
2408 | return ret; | |
2409 | } | |
56c76fa5 IP |
2410 | |
2411 | ||
2412 | void wpas_mac_addr_rand_scan_clear(struct wpa_supplicant *wpa_s, | |
2413 | unsigned int type) | |
2414 | { | |
2415 | type &= MAC_ADDR_RAND_ALL; | |
2416 | wpa_s->mac_addr_rand_enable &= ~type; | |
2417 | ||
2418 | if (type & MAC_ADDR_RAND_SCAN) { | |
2419 | os_free(wpa_s->mac_addr_scan); | |
2420 | wpa_s->mac_addr_scan = NULL; | |
2421 | } | |
2422 | ||
2423 | if (type & MAC_ADDR_RAND_SCHED_SCAN) { | |
2424 | os_free(wpa_s->mac_addr_sched_scan); | |
2425 | wpa_s->mac_addr_sched_scan = NULL; | |
2426 | } | |
2427 | ||
2428 | if (type & MAC_ADDR_RAND_PNO) { | |
2429 | os_free(wpa_s->mac_addr_pno); | |
2430 | wpa_s->mac_addr_pno = NULL; | |
2431 | } | |
2432 | } | |
2433 | ||
2434 | ||
2435 | int wpas_mac_addr_rand_scan_set(struct wpa_supplicant *wpa_s, | |
2436 | unsigned int type, const u8 *addr, | |
2437 | const u8 *mask) | |
2438 | { | |
2439 | u8 *tmp = NULL; | |
2440 | ||
2441 | wpas_mac_addr_rand_scan_clear(wpa_s, type); | |
2442 | ||
2443 | if (addr) { | |
2444 | tmp = os_malloc(2 * ETH_ALEN); | |
2445 | if (!tmp) | |
2446 | return -1; | |
2447 | os_memcpy(tmp, addr, ETH_ALEN); | |
2448 | os_memcpy(tmp + ETH_ALEN, mask, ETH_ALEN); | |
2449 | } | |
2450 | ||
2451 | if (type == MAC_ADDR_RAND_SCAN) { | |
2452 | wpa_s->mac_addr_scan = tmp; | |
2453 | } else if (type == MAC_ADDR_RAND_SCHED_SCAN) { | |
2454 | wpa_s->mac_addr_sched_scan = tmp; | |
2455 | } else if (type == MAC_ADDR_RAND_PNO) { | |
2456 | wpa_s->mac_addr_pno = tmp; | |
2457 | } else { | |
2458 | wpa_printf(MSG_INFO, | |
2459 | "scan: Invalid MAC randomization type=0x%x", | |
2460 | type); | |
2461 | os_free(tmp); | |
2462 | return -1; | |
2463 | } | |
2464 | ||
2465 | wpa_s->mac_addr_rand_enable |= type; | |
2466 | return 0; | |
2467 | } |