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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; |
e1ae2876 | 39 | wpas_notify_network_changed(wpa_s); |
8bac466b | 40 | } |
6fc6879b | 41 | wpa_supplicant_initiate_eapol(wpa_s); |
f049052b BG |
42 | wpa_dbg(wpa_s, MSG_DEBUG, "Already associated with a configured " |
43 | "network - generating associated event"); | |
6fc6879b JM |
44 | os_memset(&data, 0, sizeof(data)); |
45 | wpa_supplicant_event(wpa_s, EVENT_ASSOC, &data); | |
46 | } | |
47 | ||
48 | ||
ad08c363 | 49 | #ifdef CONFIG_WPS |
5f738a21 | 50 | static int wpas_wps_in_use(struct wpa_supplicant *wpa_s, |
f90c86d4 | 51 | enum wps_request_type *req_type) |
ad08c363 JM |
52 | { |
53 | struct wpa_ssid *ssid; | |
54 | int wps = 0; | |
ad08c363 | 55 | |
5f738a21 | 56 | for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { |
ad08c363 JM |
57 | if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS)) |
58 | continue; | |
59 | ||
60 | wps = 1; | |
b01c18a8 | 61 | *req_type = wpas_wps_get_req_type(ssid); |
88802405 | 62 | if (ssid->eap.phase1 && os_strstr(ssid->eap.phase1, "pbc=1")) |
ad08c363 JM |
63 | return 2; |
64 | } | |
65 | ||
5f738a21 | 66 | #ifdef CONFIG_P2P |
7a808c7e JM |
67 | if (!wpa_s->global->p2p_disabled && wpa_s->global->p2p && |
68 | !wpa_s->conf->p2p_disabled) { | |
b21ff9cb JM |
69 | wpa_s->wps->dev.p2p = 1; |
70 | if (!wps) { | |
71 | wps = 1; | |
72 | *req_type = WPS_REQ_ENROLLEE_INFO; | |
73 | } | |
5f738a21 LC |
74 | } |
75 | #endif /* CONFIG_P2P */ | |
76 | ||
ad08c363 JM |
77 | return wps; |
78 | } | |
79 | #endif /* CONFIG_WPS */ | |
80 | ||
e76baaac | 81 | |
2c09af30 JM |
82 | /** |
83 | * wpa_supplicant_enabled_networks - Check whether there are enabled networks | |
84 | * @wpa_s: Pointer to wpa_supplicant data | |
85 | * Returns: 0 if no networks are enabled, >0 if networks are enabled | |
86 | * | |
87 | * This function is used to figure out whether any networks (or Interworking | |
88 | * with enabled credentials and auto_interworking) are present in the current | |
89 | * configuration. | |
90 | */ | |
349493bd | 91 | int wpa_supplicant_enabled_networks(struct wpa_supplicant *wpa_s) |
e76baaac | 92 | { |
349493bd | 93 | struct wpa_ssid *ssid = wpa_s->conf->ssid; |
d4534bde | 94 | int count = 0, disabled = 0; |
44b9ea5b JM |
95 | |
96 | if (wpa_s->p2p_mgmt) | |
97 | return 0; /* no normal network profiles on p2p_mgmt interface */ | |
98 | ||
e76baaac | 99 | while (ssid) { |
349493bd | 100 | if (!wpas_network_disabled(wpa_s, ssid)) |
5471c343 | 101 | count++; |
d4534bde JM |
102 | else |
103 | disabled++; | |
e76baaac JM |
104 | ssid = ssid->next; |
105 | } | |
4d5bda5f JM |
106 | if (wpa_s->conf->cred && wpa_s->conf->interworking && |
107 | wpa_s->conf->auto_interworking) | |
108 | count++; | |
d4534bde JM |
109 | if (count == 0 && disabled > 0) { |
110 | wpa_dbg(wpa_s, MSG_DEBUG, "No enabled networks (%d disabled " | |
111 | "networks)", disabled); | |
112 | } | |
5471c343 | 113 | return count; |
e76baaac JM |
114 | } |
115 | ||
116 | ||
117 | static void wpa_supplicant_assoc_try(struct wpa_supplicant *wpa_s, | |
118 | struct wpa_ssid *ssid) | |
119 | { | |
120 | while (ssid) { | |
349493bd | 121 | if (!wpas_network_disabled(wpa_s, ssid)) |
e76baaac JM |
122 | break; |
123 | ssid = ssid->next; | |
124 | } | |
125 | ||
126 | /* ap_scan=2 mode - try to associate with each SSID. */ | |
127 | if (ssid == NULL) { | |
f049052b BG |
128 | wpa_dbg(wpa_s, MSG_DEBUG, "wpa_supplicant_assoc_try: Reached " |
129 | "end of scan list - go back to beginning"); | |
ba2a573c | 130 | wpa_s->prev_scan_ssid = WILDCARD_SSID_SCAN; |
e76baaac JM |
131 | wpa_supplicant_req_scan(wpa_s, 0, 0); |
132 | return; | |
133 | } | |
134 | if (ssid->next) { | |
135 | /* Continue from the next SSID on the next attempt. */ | |
136 | wpa_s->prev_scan_ssid = ssid; | |
137 | } else { | |
138 | /* Start from the beginning of the SSID list. */ | |
ba2a573c | 139 | wpa_s->prev_scan_ssid = WILDCARD_SSID_SCAN; |
e76baaac JM |
140 | } |
141 | wpa_supplicant_associate(wpa_s, NULL, ssid); | |
142 | } | |
143 | ||
144 | ||
d12a51b5 | 145 | static void wpas_trigger_scan_cb(struct wpa_radio_work *work, int deinit) |
60b94c98 | 146 | { |
d12a51b5 JM |
147 | struct wpa_supplicant *wpa_s = work->wpa_s; |
148 | struct wpa_driver_scan_params *params = work->ctx; | |
60b94c98 JM |
149 | int ret; |
150 | ||
d12a51b5 | 151 | if (deinit) { |
b3253ebb AO |
152 | if (!work->started) { |
153 | wpa_scan_free_params(params); | |
154 | return; | |
155 | } | |
156 | wpa_supplicant_notify_scanning(wpa_s, 0); | |
157 | wpas_notify_scan_done(wpa_s, 0); | |
158 | wpa_s->scan_work = NULL; | |
d12a51b5 JM |
159 | return; |
160 | } | |
161 | ||
c267753b JM |
162 | if (wpas_update_random_addr_disassoc(wpa_s) < 0) { |
163 | wpa_msg(wpa_s, MSG_INFO, | |
164 | "Failed to assign random MAC address for a scan"); | |
6dc3206e JM |
165 | wpa_scan_free_params(params); |
166 | wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SCAN_FAILED "ret=-1"); | |
c267753b JM |
167 | radio_work_done(work); |
168 | return; | |
169 | } | |
170 | ||
60b94c98 JM |
171 | wpa_supplicant_notify_scanning(wpa_s, 1); |
172 | ||
2dbe63ad JM |
173 | if (wpa_s->clear_driver_scan_cache) { |
174 | wpa_printf(MSG_DEBUG, | |
175 | "Request driver to clear scan cache due to local BSS flush"); | |
949938aa | 176 | params->only_new_results = 1; |
2dbe63ad | 177 | } |
17fbb751 | 178 | ret = wpa_drv_scan(wpa_s, params); |
bf88401d SD |
179 | /* |
180 | * Store the obtained vendor scan cookie (if any) in wpa_s context. | |
181 | * The current design is to allow only one scan request on each | |
182 | * interface, hence having this scan cookie stored in wpa_s context is | |
183 | * fine for now. | |
184 | * | |
185 | * Revisit this logic if concurrent scan operations per interface | |
186 | * is supported. | |
187 | */ | |
188 | if (ret == 0) | |
189 | wpa_s->curr_scan_cookie = params->scan_cookie; | |
d12a51b5 JM |
190 | wpa_scan_free_params(params); |
191 | work->ctx = NULL; | |
60b94c98 | 192 | if (ret) { |
2d9c99e3 JM |
193 | int retry = wpa_s->last_scan_req != MANUAL_SCAN_REQ; |
194 | ||
195 | if (wpa_s->disconnected) | |
196 | retry = 0; | |
197 | ||
60b94c98 JM |
198 | wpa_supplicant_notify_scanning(wpa_s, 0); |
199 | wpas_notify_scan_done(wpa_s, 0); | |
2d9c99e3 JM |
200 | if (wpa_s->wpa_state == WPA_SCANNING) |
201 | wpa_supplicant_set_state(wpa_s, | |
202 | wpa_s->scan_prev_wpa_state); | |
203 | wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SCAN_FAILED "ret=%d%s", | |
204 | ret, retry ? " retry=1" : ""); | |
d12a51b5 | 205 | radio_work_done(work); |
2d9c99e3 JM |
206 | |
207 | if (retry) { | |
208 | /* Restore scan_req since we will try to scan again */ | |
209 | wpa_s->scan_req = wpa_s->last_scan_req; | |
210 | wpa_supplicant_req_scan(wpa_s, 1, 0); | |
211 | } | |
d12a51b5 | 212 | return; |
0b7a25c0 | 213 | } |
60b94c98 | 214 | |
d12a51b5 JM |
215 | os_get_reltime(&wpa_s->scan_trigger_time); |
216 | wpa_s->scan_runs++; | |
217 | wpa_s->normal_scans++; | |
218 | wpa_s->own_scan_requested = 1; | |
219 | wpa_s->clear_driver_scan_cache = 0; | |
220 | wpa_s->scan_work = work; | |
221 | } | |
222 | ||
223 | ||
224 | /** | |
225 | * wpa_supplicant_trigger_scan - Request driver to start a scan | |
226 | * @wpa_s: Pointer to wpa_supplicant data | |
227 | * @params: Scan parameters | |
228 | * Returns: 0 on success, -1 on failure | |
229 | */ | |
230 | int wpa_supplicant_trigger_scan(struct wpa_supplicant *wpa_s, | |
231 | struct wpa_driver_scan_params *params) | |
232 | { | |
233 | struct wpa_driver_scan_params *ctx; | |
234 | ||
235 | if (wpa_s->scan_work) { | |
236 | wpa_dbg(wpa_s, MSG_INFO, "Reject scan trigger since one is already pending"); | |
237 | return -1; | |
238 | } | |
239 | ||
240 | ctx = wpa_scan_clone_params(params); | |
f37d8a4d JM |
241 | if (!ctx || |
242 | radio_add_work(wpa_s, 0, "scan", 0, wpas_trigger_scan_cb, ctx) < 0) | |
d12a51b5 JM |
243 | { |
244 | wpa_scan_free_params(ctx); | |
6dc3206e | 245 | wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SCAN_FAILED "ret=-1"); |
d12a51b5 JM |
246 | return -1; |
247 | } | |
248 | ||
249 | return 0; | |
60b94c98 JM |
250 | } |
251 | ||
252 | ||
6a90053c LC |
253 | static void |
254 | wpa_supplicant_delayed_sched_scan_timeout(void *eloop_ctx, void *timeout_ctx) | |
255 | { | |
256 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
257 | ||
258 | wpa_dbg(wpa_s, MSG_DEBUG, "Starting delayed sched scan"); | |
259 | ||
260 | if (wpa_supplicant_req_sched_scan(wpa_s)) | |
261 | wpa_supplicant_req_scan(wpa_s, 0, 0); | |
262 | } | |
263 | ||
264 | ||
cbdf3507 LC |
265 | static void |
266 | wpa_supplicant_sched_scan_timeout(void *eloop_ctx, void *timeout_ctx) | |
267 | { | |
268 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
269 | ||
270 | wpa_dbg(wpa_s, MSG_DEBUG, "Sched scan timeout - stopping it"); | |
271 | ||
272 | wpa_s->sched_scan_timed_out = 1; | |
273 | wpa_supplicant_cancel_sched_scan(wpa_s); | |
274 | } | |
275 | ||
276 | ||
0f346657 JM |
277 | static int |
278 | wpa_supplicant_start_sched_scan(struct wpa_supplicant *wpa_s, | |
279 | struct wpa_driver_scan_params *params) | |
cbdf3507 LC |
280 | { |
281 | int ret; | |
282 | ||
cbdf3507 | 283 | wpa_supplicant_notify_scanning(wpa_s, 1); |
09ea4309 | 284 | ret = wpa_drv_sched_scan(wpa_s, params); |
cbdf3507 LC |
285 | if (ret) |
286 | wpa_supplicant_notify_scanning(wpa_s, 0); | |
287 | else | |
288 | wpa_s->sched_scanning = 1; | |
289 | ||
290 | return ret; | |
291 | } | |
292 | ||
293 | ||
0f346657 | 294 | static int wpa_supplicant_stop_sched_scan(struct wpa_supplicant *wpa_s) |
cbdf3507 LC |
295 | { |
296 | int ret; | |
297 | ||
298 | ret = wpa_drv_stop_sched_scan(wpa_s); | |
299 | if (ret) { | |
300 | wpa_dbg(wpa_s, MSG_DEBUG, "stopping sched_scan failed!"); | |
301 | /* TODO: what to do if stopping fails? */ | |
302 | return -1; | |
303 | } | |
304 | ||
305 | return ret; | |
306 | } | |
307 | ||
308 | ||
3812464c JM |
309 | static struct wpa_driver_scan_filter * |
310 | wpa_supplicant_build_filter_ssids(struct wpa_config *conf, size_t *num_ssids) | |
311 | { | |
312 | struct wpa_driver_scan_filter *ssids; | |
313 | struct wpa_ssid *ssid; | |
314 | size_t count; | |
315 | ||
316 | *num_ssids = 0; | |
317 | if (!conf->filter_ssids) | |
318 | return NULL; | |
319 | ||
320 | for (count = 0, ssid = conf->ssid; ssid; ssid = ssid->next) { | |
321 | if (ssid->ssid && ssid->ssid_len) | |
322 | count++; | |
323 | } | |
324 | if (count == 0) | |
325 | return NULL; | |
faebdeaa | 326 | ssids = os_calloc(count, sizeof(struct wpa_driver_scan_filter)); |
3812464c JM |
327 | if (ssids == NULL) |
328 | return NULL; | |
329 | ||
330 | for (ssid = conf->ssid; ssid; ssid = ssid->next) { | |
331 | if (!ssid->ssid || !ssid->ssid_len) | |
332 | continue; | |
333 | os_memcpy(ssids[*num_ssids].ssid, ssid->ssid, ssid->ssid_len); | |
334 | ssids[*num_ssids].ssid_len = ssid->ssid_len; | |
335 | (*num_ssids)++; | |
336 | } | |
337 | ||
338 | return ssids; | |
339 | } | |
340 | ||
341 | ||
5f738a21 LC |
342 | static void wpa_supplicant_optimize_freqs( |
343 | struct wpa_supplicant *wpa_s, struct wpa_driver_scan_params *params) | |
344 | { | |
345 | #ifdef CONFIG_P2P | |
346 | if (params->freqs == NULL && wpa_s->p2p_in_provisioning && | |
347 | wpa_s->go_params) { | |
348 | /* Optimize provisioning state scan based on GO information */ | |
349 | if (wpa_s->p2p_in_provisioning < 5 && | |
350 | wpa_s->go_params->freq > 0) { | |
351 | wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Scan only GO " | |
352 | "preferred frequency %d MHz", | |
353 | wpa_s->go_params->freq); | |
faebdeaa | 354 | params->freqs = os_calloc(2, sizeof(int)); |
5f738a21 LC |
355 | if (params->freqs) |
356 | params->freqs[0] = wpa_s->go_params->freq; | |
357 | } else if (wpa_s->p2p_in_provisioning < 8 && | |
358 | wpa_s->go_params->freq_list[0]) { | |
359 | wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Scan only common " | |
360 | "channels"); | |
361 | int_array_concat(¶ms->freqs, | |
362 | wpa_s->go_params->freq_list); | |
363 | if (params->freqs) | |
364 | int_array_sort_unique(params->freqs); | |
365 | } | |
366 | wpa_s->p2p_in_provisioning++; | |
367 | } | |
41d5ce9e RR |
368 | |
369 | if (params->freqs == NULL && wpa_s->p2p_in_invitation) { | |
370 | /* | |
371 | * Optimize scan based on GO information during persistent | |
372 | * group reinvocation | |
373 | */ | |
28fa4eb2 | 374 | if (wpa_s->p2p_in_invitation < 5 && |
41d5ce9e RR |
375 | wpa_s->p2p_invite_go_freq > 0) { |
376 | wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Scan only GO preferred frequency %d MHz during invitation", | |
377 | wpa_s->p2p_invite_go_freq); | |
faebdeaa | 378 | params->freqs = os_calloc(2, sizeof(int)); |
41d5ce9e RR |
379 | if (params->freqs) |
380 | params->freqs[0] = wpa_s->p2p_invite_go_freq; | |
381 | } | |
382 | wpa_s->p2p_in_invitation++; | |
383 | if (wpa_s->p2p_in_invitation > 20) { | |
384 | /* | |
385 | * This should not really happen since the variable is | |
386 | * cleared on group removal, but if it does happen, make | |
387 | * sure we do not get stuck in special invitation scan | |
388 | * mode. | |
389 | */ | |
390 | wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Clear p2p_in_invitation"); | |
391 | wpa_s->p2p_in_invitation = 0; | |
392 | } | |
393 | } | |
5f738a21 LC |
394 | #endif /* CONFIG_P2P */ |
395 | ||
396 | #ifdef CONFIG_WPS | |
397 | if (params->freqs == NULL && wpa_s->after_wps && wpa_s->wps_freq) { | |
398 | /* | |
399 | * Optimize post-provisioning scan based on channel used | |
400 | * during provisioning. | |
401 | */ | |
402 | wpa_dbg(wpa_s, MSG_DEBUG, "WPS: Scan only frequency %u MHz " | |
403 | "that was used during provisioning", wpa_s->wps_freq); | |
faebdeaa | 404 | params->freqs = os_calloc(2, sizeof(int)); |
5f738a21 LC |
405 | if (params->freqs) |
406 | params->freqs[0] = wpa_s->wps_freq; | |
407 | wpa_s->after_wps--; | |
662b40b1 JM |
408 | } else if (wpa_s->after_wps) |
409 | wpa_s->after_wps--; | |
5f738a21 | 410 | |
1e7fb4f1 JM |
411 | if (params->freqs == NULL && wpa_s->known_wps_freq && wpa_s->wps_freq) |
412 | { | |
413 | /* Optimize provisioning scan based on already known channel */ | |
414 | wpa_dbg(wpa_s, MSG_DEBUG, "WPS: Scan only frequency %u MHz", | |
415 | wpa_s->wps_freq); | |
faebdeaa | 416 | params->freqs = os_calloc(2, sizeof(int)); |
1e7fb4f1 JM |
417 | if (params->freqs) |
418 | params->freqs[0] = wpa_s->wps_freq; | |
419 | wpa_s->known_wps_freq = 0; /* only do this once */ | |
420 | } | |
5f738a21 LC |
421 | #endif /* CONFIG_WPS */ |
422 | } | |
423 | ||
424 | ||
46ee0427 JM |
425 | #ifdef CONFIG_INTERWORKING |
426 | static void wpas_add_interworking_elements(struct wpa_supplicant *wpa_s, | |
427 | struct wpabuf *buf) | |
428 | { | |
46ee0427 JM |
429 | wpabuf_put_u8(buf, WLAN_EID_INTERWORKING); |
430 | wpabuf_put_u8(buf, is_zero_ether_addr(wpa_s->conf->hessid) ? 1 : | |
431 | 1 + ETH_ALEN); | |
11540c0b | 432 | wpabuf_put_u8(buf, wpa_s->conf->access_network_type); |
46ee0427 JM |
433 | /* No Venue Info */ |
434 | if (!is_zero_ether_addr(wpa_s->conf->hessid)) | |
435 | wpabuf_put_data(buf, wpa_s->conf->hessid, ETH_ALEN); | |
436 | } | |
437 | #endif /* CONFIG_INTERWORKING */ | |
438 | ||
439 | ||
cc9985d1 | 440 | void wpa_supplicant_set_default_scan_ies(struct wpa_supplicant *wpa_s) |
441 | { | |
442 | struct wpabuf *default_ies = NULL; | |
443 | u8 ext_capab[18]; | |
444 | int ext_capab_len; | |
445 | enum wpa_driver_if_type type = WPA_IF_STATION; | |
446 | ||
447 | #ifdef CONFIG_P2P | |
448 | if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) | |
449 | type = WPA_IF_P2P_CLIENT; | |
450 | #endif /* CONFIG_P2P */ | |
451 | ||
452 | wpa_drv_get_ext_capa(wpa_s, type); | |
453 | ||
454 | ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab, | |
455 | sizeof(ext_capab)); | |
456 | if (ext_capab_len > 0 && | |
457 | wpabuf_resize(&default_ies, ext_capab_len) == 0) | |
458 | wpabuf_put_data(default_ies, ext_capab, ext_capab_len); | |
459 | ||
460 | #ifdef CONFIG_MBO | |
461 | /* Send cellular capabilities for potential MBO STAs */ | |
462 | if (wpabuf_resize(&default_ies, 9) == 0) | |
463 | wpas_mbo_scan_ie(wpa_s, default_ies); | |
464 | #endif /* CONFIG_MBO */ | |
465 | ||
466 | if (default_ies) | |
467 | wpa_drv_set_default_scan_ies(wpa_s, wpabuf_head(default_ies), | |
468 | wpabuf_len(default_ies)); | |
469 | wpabuf_free(default_ies); | |
470 | } | |
471 | ||
472 | ||
a13e07ec | 473 | static struct wpabuf * wpa_supplicant_extra_ies(struct wpa_supplicant *wpa_s) |
6fc6879b | 474 | { |
46ee0427 | 475 | struct wpabuf *extra_ie = NULL; |
ad443097 IP |
476 | u8 ext_capab[18]; |
477 | int ext_capab_len; | |
b01c18a8 | 478 | #ifdef CONFIG_WPS |
509a3972 | 479 | int wps = 0; |
f90c86d4 | 480 | enum wps_request_type req_type = WPS_REQ_ENROLLEE_INFO; |
46ee0427 JM |
481 | #endif /* CONFIG_WPS */ |
482 | ||
cc9a2575 KV |
483 | #ifdef CONFIG_P2P |
484 | if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) | |
485 | wpa_drv_get_ext_capa(wpa_s, WPA_IF_P2P_CLIENT); | |
486 | else | |
487 | #endif /* CONFIG_P2P */ | |
488 | wpa_drv_get_ext_capa(wpa_s, WPA_IF_STATION); | |
489 | ||
ad443097 IP |
490 | ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab, |
491 | sizeof(ext_capab)); | |
492 | if (ext_capab_len > 0 && | |
493 | wpabuf_resize(&extra_ie, ext_capab_len) == 0) | |
494 | wpabuf_put_data(extra_ie, ext_capab, ext_capab_len); | |
495 | ||
46ee0427 JM |
496 | #ifdef CONFIG_INTERWORKING |
497 | if (wpa_s->conf->interworking && | |
498 | wpabuf_resize(&extra_ie, 100) == 0) | |
499 | wpas_add_interworking_elements(wpa_s, extra_ie); | |
500 | #endif /* CONFIG_INTERWORKING */ | |
5f738a21 | 501 | |
46ee0427 | 502 | #ifdef CONFIG_WPS |
5f738a21 LC |
503 | wps = wpas_wps_in_use(wpa_s, &req_type); |
504 | ||
505 | if (wps) { | |
46ee0427 | 506 | struct wpabuf *wps_ie; |
360182ed JM |
507 | wps_ie = wps_build_probe_req_ie(wps == 2 ? DEV_PW_PUSHBUTTON : |
508 | DEV_PW_DEFAULT, | |
509 | &wpa_s->wps->dev, | |
5f738a21 LC |
510 | wpa_s->wps->uuid, req_type, |
511 | 0, NULL); | |
512 | if (wps_ie) { | |
46ee0427 JM |
513 | if (wpabuf_resize(&extra_ie, wpabuf_len(wps_ie)) == 0) |
514 | wpabuf_put_buf(extra_ie, wps_ie); | |
515 | wpabuf_free(wps_ie); | |
5f738a21 LC |
516 | } |
517 | } | |
518 | ||
519 | #ifdef CONFIG_P2P | |
46ee0427 | 520 | if (wps) { |
5f738a21 | 521 | size_t ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p); |
46ee0427 JM |
522 | if (wpabuf_resize(&extra_ie, ielen) == 0) |
523 | wpas_p2p_scan_ie(wpa_s, extra_ie); | |
5f738a21 LC |
524 | } |
525 | #endif /* CONFIG_P2P */ | |
526 | ||
fbca4c89 JA |
527 | wpa_supplicant_mesh_add_scan_ie(wpa_s, &extra_ie); |
528 | ||
b01c18a8 | 529 | #endif /* CONFIG_WPS */ |
5f738a21 | 530 | |
0f105f9e JM |
531 | #ifdef CONFIG_HS20 |
532 | if (wpa_s->conf->hs20 && wpabuf_resize(&extra_ie, 7) == 0) | |
f9cd147d | 533 | wpas_hs20_add_indication(extra_ie, -1); |
0f105f9e JM |
534 | #endif /* CONFIG_HS20 */ |
535 | ||
b36a3a65 AN |
536 | #ifdef CONFIG_FST |
537 | if (wpa_s->fst_ies && | |
538 | wpabuf_resize(&extra_ie, wpabuf_len(wpa_s->fst_ies)) == 0) | |
539 | wpabuf_put_buf(extra_ie, wpa_s->fst_ies); | |
540 | #endif /* CONFIG_FST */ | |
541 | ||
c5d193d7 DS |
542 | #ifdef CONFIG_MBO |
543 | /* Send cellular capabilities for potential MBO STAs */ | |
544 | if (wpabuf_resize(&extra_ie, 9) == 0) | |
545 | wpas_mbo_scan_ie(wpa_s, extra_ie); | |
546 | #endif /* CONFIG_MBO */ | |
547 | ||
61c10118 JM |
548 | if (wpa_s->vendor_elem[VENDOR_ELEM_PROBE_REQ]) { |
549 | struct wpabuf *buf = wpa_s->vendor_elem[VENDOR_ELEM_PROBE_REQ]; | |
550 | ||
551 | if (wpabuf_resize(&extra_ie, wpabuf_len(buf)) == 0) | |
552 | wpabuf_put_buf(extra_ie, buf); | |
553 | } | |
554 | ||
46ee0427 | 555 | return extra_ie; |
5f738a21 LC |
556 | } |
557 | ||
558 | ||
5cc70322 JM |
559 | #ifdef CONFIG_P2P |
560 | ||
561 | /* | |
562 | * Check whether there are any enabled networks or credentials that could be | |
563 | * used for a non-P2P connection. | |
564 | */ | |
565 | static int non_p2p_network_enabled(struct wpa_supplicant *wpa_s) | |
566 | { | |
567 | struct wpa_ssid *ssid; | |
568 | ||
569 | for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { | |
570 | if (wpas_network_disabled(wpa_s, ssid)) | |
571 | continue; | |
572 | if (!ssid->p2p_group) | |
573 | return 1; | |
574 | } | |
575 | ||
576 | if (wpa_s->conf->cred && wpa_s->conf->interworking && | |
577 | wpa_s->conf->auto_interworking) | |
578 | return 1; | |
579 | ||
580 | return 0; | |
581 | } | |
582 | ||
6124e858 | 583 | #endif /* CONFIG_P2P */ |
5cc70322 | 584 | |
5cc70322 | 585 | |
faf9a858 JM |
586 | static void wpa_setband_scan_freqs_list(struct wpa_supplicant *wpa_s, |
587 | enum hostapd_hw_mode band, | |
588 | struct wpa_driver_scan_params *params) | |
589 | { | |
590 | /* Include only supported channels for the specified band */ | |
591 | struct hostapd_hw_modes *mode; | |
592 | int count, i; | |
593 | ||
594 | mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, band); | |
595 | if (mode == NULL) { | |
596 | /* No channels supported in this band - use empty list */ | |
597 | params->freqs = os_zalloc(sizeof(int)); | |
598 | return; | |
599 | } | |
600 | ||
faebdeaa | 601 | params->freqs = os_calloc(mode->num_channels + 1, sizeof(int)); |
faf9a858 JM |
602 | if (params->freqs == NULL) |
603 | return; | |
604 | for (count = 0, i = 0; i < mode->num_channels; i++) { | |
605 | if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED) | |
606 | continue; | |
607 | params->freqs[count++] = mode->channels[i].freq; | |
608 | } | |
609 | } | |
610 | ||
611 | ||
612 | static void wpa_setband_scan_freqs(struct wpa_supplicant *wpa_s, | |
613 | struct wpa_driver_scan_params *params) | |
614 | { | |
615 | if (wpa_s->hw.modes == NULL) | |
616 | return; /* unknown what channels the driver supports */ | |
617 | if (params->freqs) | |
618 | return; /* already using a limited channel set */ | |
619 | if (wpa_s->setband == WPA_SETBAND_5G) | |
620 | wpa_setband_scan_freqs_list(wpa_s, HOSTAPD_MODE_IEEE80211A, | |
621 | params); | |
622 | else if (wpa_s->setband == WPA_SETBAND_2G) | |
623 | wpa_setband_scan_freqs_list(wpa_s, HOSTAPD_MODE_IEEE80211G, | |
624 | params); | |
625 | } | |
626 | ||
627 | ||
6891f0e6 LJ |
628 | static void wpa_set_scan_ssids(struct wpa_supplicant *wpa_s, |
629 | struct wpa_driver_scan_params *params, | |
630 | size_t max_ssids) | |
631 | { | |
632 | unsigned int i; | |
633 | struct wpa_ssid *ssid; | |
634 | ||
ef60f643 RP |
635 | /* |
636 | * For devices with max_ssids greater than 1, leave the last slot empty | |
637 | * for adding the wildcard scan entry. | |
638 | */ | |
639 | max_ssids = max_ssids > 1 ? max_ssids - 1 : max_ssids; | |
640 | ||
6891f0e6 LJ |
641 | for (i = 0; i < wpa_s->scan_id_count; i++) { |
642 | unsigned int j; | |
643 | ||
644 | ssid = wpa_config_get_network(wpa_s->conf, wpa_s->scan_id[i]); | |
645 | if (!ssid || !ssid->scan_ssid) | |
646 | continue; | |
647 | ||
648 | for (j = 0; j < params->num_ssids; j++) { | |
649 | if (params->ssids[j].ssid_len == ssid->ssid_len && | |
650 | params->ssids[j].ssid && | |
651 | os_memcmp(params->ssids[j].ssid, ssid->ssid, | |
652 | ssid->ssid_len) == 0) | |
653 | break; | |
654 | } | |
655 | if (j < params->num_ssids) | |
656 | continue; /* already in the list */ | |
657 | ||
658 | if (params->num_ssids + 1 > max_ssids) { | |
659 | wpa_printf(MSG_DEBUG, | |
660 | "Over max scan SSIDs for manual request"); | |
661 | break; | |
662 | } | |
663 | ||
664 | wpa_printf(MSG_DEBUG, "Scan SSID (manual request): %s", | |
665 | wpa_ssid_txt(ssid->ssid, ssid->ssid_len)); | |
666 | params->ssids[params->num_ssids].ssid = ssid->ssid; | |
667 | params->ssids[params->num_ssids].ssid_len = ssid->ssid_len; | |
668 | params->num_ssids++; | |
669 | } | |
670 | ||
671 | wpa_s->scan_id_count = 0; | |
672 | } | |
673 | ||
674 | ||
a80651d0 KV |
675 | static int wpa_set_ssids_from_scan_req(struct wpa_supplicant *wpa_s, |
676 | struct wpa_driver_scan_params *params, | |
677 | size_t max_ssids) | |
678 | { | |
679 | unsigned int i; | |
680 | ||
681 | if (wpa_s->ssids_from_scan_req == NULL || | |
682 | wpa_s->num_ssids_from_scan_req == 0) | |
683 | return 0; | |
684 | ||
685 | if (wpa_s->num_ssids_from_scan_req > max_ssids) { | |
686 | wpa_s->num_ssids_from_scan_req = max_ssids; | |
687 | wpa_printf(MSG_DEBUG, "Over max scan SSIDs from scan req: %u", | |
688 | (unsigned int) max_ssids); | |
689 | } | |
690 | ||
691 | for (i = 0; i < wpa_s->num_ssids_from_scan_req; i++) { | |
692 | params->ssids[i].ssid = wpa_s->ssids_from_scan_req[i].ssid; | |
693 | params->ssids[i].ssid_len = | |
694 | wpa_s->ssids_from_scan_req[i].ssid_len; | |
695 | wpa_hexdump_ascii(MSG_DEBUG, "specific SSID", | |
696 | params->ssids[i].ssid, | |
697 | params->ssids[i].ssid_len); | |
698 | } | |
699 | ||
700 | params->num_ssids = wpa_s->num_ssids_from_scan_req; | |
701 | wpa_s->num_ssids_from_scan_req = 0; | |
702 | return 1; | |
703 | } | |
704 | ||
705 | ||
5f738a21 LC |
706 | static void wpa_supplicant_scan(void *eloop_ctx, void *timeout_ctx) |
707 | { | |
708 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
709 | struct wpa_ssid *ssid; | |
49e3eea8 | 710 | int ret, p2p_in_prog; |
b9b12d02 | 711 | struct wpabuf *extra_ie = NULL; |
e76baaac | 712 | struct wpa_driver_scan_params params; |
7c865c68 | 713 | struct wpa_driver_scan_params *scan_params; |
e76baaac | 714 | size_t max_ssids; |
3f9ebc43 | 715 | int connect_without_scan = 0; |
6fc6879b | 716 | |
6e374bd4 JM |
717 | wpa_s->ignore_post_flush_scan_res = 0; |
718 | ||
8401a6b0 | 719 | if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) { |
f049052b | 720 | wpa_dbg(wpa_s, MSG_DEBUG, "Skip scan - interface disabled"); |
8401a6b0 JM |
721 | return; |
722 | } | |
723 | ||
4115303b | 724 | if (wpa_s->disconnected && wpa_s->scan_req == NORMAL_SCAN_REQ) { |
ac06fb12 | 725 | wpa_dbg(wpa_s, MSG_DEBUG, "Disconnected - do not scan"); |
3180d7a2 | 726 | wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); |
6fc6879b | 727 | return; |
3180d7a2 | 728 | } |
6fc6879b | 729 | |
f86d282f JJ |
730 | if (wpa_s->scanning) { |
731 | /* | |
732 | * If we are already in scanning state, we shall reschedule the | |
733 | * the incoming scan request. | |
734 | */ | |
735 | wpa_dbg(wpa_s, MSG_DEBUG, "Already scanning - Reschedule the incoming scan req"); | |
736 | wpa_supplicant_req_scan(wpa_s, 1, 0); | |
737 | return; | |
738 | } | |
739 | ||
349493bd | 740 | if (!wpa_supplicant_enabled_networks(wpa_s) && |
4115303b | 741 | wpa_s->scan_req == NORMAL_SCAN_REQ) { |
f049052b | 742 | wpa_dbg(wpa_s, MSG_DEBUG, "No enabled networks - do not scan"); |
6fc6879b JM |
743 | wpa_supplicant_set_state(wpa_s, WPA_INACTIVE); |
744 | return; | |
745 | } | |
6fc6879b | 746 | |
c2a04078 JM |
747 | if (wpa_s->conf->ap_scan != 0 && |
748 | (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED)) { | |
f049052b BG |
749 | wpa_dbg(wpa_s, MSG_DEBUG, "Using wired authentication - " |
750 | "overriding ap_scan configuration"); | |
6fc6879b | 751 | wpa_s->conf->ap_scan = 0; |
8bac466b | 752 | wpas_notify_ap_scan_changed(wpa_s); |
6fc6879b JM |
753 | } |
754 | ||
755 | if (wpa_s->conf->ap_scan == 0) { | |
756 | wpa_supplicant_gen_assoc_event(wpa_s); | |
757 | return; | |
758 | } | |
759 | ||
3f9ebc43 | 760 | ssid = NULL; |
a51c40aa | 761 | if (wpa_s->scan_req != MANUAL_SCAN_REQ && |
3f9ebc43 JM |
762 | wpa_s->connect_without_scan) { |
763 | connect_without_scan = 1; | |
764 | for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { | |
765 | if (ssid == wpa_s->connect_without_scan) | |
766 | break; | |
767 | } | |
768 | } | |
769 | ||
49e3eea8 | 770 | p2p_in_prog = wpas_p2p_in_progress(wpa_s); |
3f9ebc43 JM |
771 | if (p2p_in_prog && p2p_in_prog != 2 && |
772 | (!ssid || | |
773 | (ssid->mode != WPAS_MODE_AP && ssid->mode != WPAS_MODE_P2P_GO))) { | |
1b5d4714 JM |
774 | wpa_dbg(wpa_s, MSG_DEBUG, "Delay station mode scan while P2P operation is in progress"); |
775 | wpa_supplicant_req_scan(wpa_s, 5, 0); | |
776 | return; | |
303f60d3 | 777 | } |
303f60d3 | 778 | |
57f93d68 AN |
779 | /* |
780 | * Don't cancel the scan based on ongoing PNO; defer it. Some scans are | |
781 | * used for changing modes inside wpa_supplicant (roaming, | |
782 | * auto-reconnect, etc). Discarding the scan might hurt these processes. | |
783 | * The normal use case for PNO is to suspend the host immediately after | |
784 | * starting PNO, so the periodic 100 ms attempts to run the scan do not | |
785 | * normally happen in practice multiple times, i.e., this is simply | |
786 | * restarting scanning once the host is woken up and PNO stopped. | |
787 | */ | |
788 | if (wpa_s->pno || wpa_s->pno_sched_pending) { | |
789 | wpa_dbg(wpa_s, MSG_DEBUG, "Defer scan - PNO is in progress"); | |
790 | wpa_supplicant_req_scan(wpa_s, 0, 100000); | |
791 | return; | |
792 | } | |
793 | ||
17fbb751 | 794 | if (wpa_s->conf->ap_scan == 2) |
e76baaac JM |
795 | max_ssids = 1; |
796 | else { | |
797 | max_ssids = wpa_s->max_scan_ssids; | |
798 | if (max_ssids > WPAS_MAX_SCAN_SSIDS) | |
799 | max_ssids = WPAS_MAX_SCAN_SSIDS; | |
800 | } | |
801 | ||
12455031 | 802 | wpa_s->last_scan_req = wpa_s->scan_req; |
4115303b | 803 | wpa_s->scan_req = NORMAL_SCAN_REQ; |
e76baaac | 804 | |
3f9ebc43 JM |
805 | if (connect_without_scan) { |
806 | wpa_s->connect_without_scan = NULL; | |
807 | if (ssid) { | |
808 | wpa_printf(MSG_DEBUG, "Start a pre-selected network " | |
809 | "without scan step"); | |
810 | wpa_supplicant_associate(wpa_s, NULL, ssid); | |
811 | return; | |
812 | } | |
813 | } | |
814 | ||
e76baaac JM |
815 | os_memset(¶ms, 0, sizeof(params)); |
816 | ||
2d9c99e3 | 817 | wpa_s->scan_prev_wpa_state = wpa_s->wpa_state; |
6fc6879b JM |
818 | if (wpa_s->wpa_state == WPA_DISCONNECTED || |
819 | wpa_s->wpa_state == WPA_INACTIVE) | |
820 | wpa_supplicant_set_state(wpa_s, WPA_SCANNING); | |
821 | ||
7c865c68 TB |
822 | /* |
823 | * If autoscan has set its own scanning parameters | |
824 | */ | |
825 | if (wpa_s->autoscan_params != NULL) { | |
826 | scan_params = wpa_s->autoscan_params; | |
827 | goto scan; | |
828 | } | |
829 | ||
a80651d0 KV |
830 | if (wpa_s->last_scan_req == MANUAL_SCAN_REQ && |
831 | wpa_set_ssids_from_scan_req(wpa_s, ¶ms, max_ssids)) { | |
832 | wpa_printf(MSG_DEBUG, "Use specific SSIDs from SCAN command"); | |
833 | goto ssid_list_set; | |
834 | } | |
835 | ||
a21c05db | 836 | #ifdef CONFIG_P2P |
85ea132a | 837 | if ((wpa_s->p2p_in_provisioning || wpa_s->show_group_started) && |
c35e35ed | 838 | wpa_s->go_params && !wpa_s->conf->passive_scan) { |
9100b660 JM |
839 | wpa_printf(MSG_DEBUG, "P2P: Use specific SSID for scan during P2P group formation (p2p_in_provisioning=%d show_group_started=%d)", |
840 | wpa_s->p2p_in_provisioning, | |
841 | wpa_s->show_group_started); | |
a21c05db JM |
842 | params.ssids[0].ssid = wpa_s->go_params->ssid; |
843 | params.ssids[0].ssid_len = wpa_s->go_params->ssid_len; | |
844 | params.num_ssids = 1; | |
845 | goto ssid_list_set; | |
846 | } | |
41d5ce9e RR |
847 | |
848 | if (wpa_s->p2p_in_invitation) { | |
849 | if (wpa_s->current_ssid) { | |
850 | wpa_printf(MSG_DEBUG, "P2P: Use specific SSID for scan during invitation"); | |
851 | params.ssids[0].ssid = wpa_s->current_ssid->ssid; | |
852 | params.ssids[0].ssid_len = | |
853 | wpa_s->current_ssid->ssid_len; | |
854 | params.num_ssids = 1; | |
855 | } else { | |
856 | wpa_printf(MSG_DEBUG, "P2P: No specific SSID known for scan during invitation"); | |
857 | } | |
858 | goto ssid_list_set; | |
859 | } | |
a21c05db JM |
860 | #endif /* CONFIG_P2P */ |
861 | ||
e76baaac | 862 | /* Find the starting point from which to continue scanning */ |
6fc6879b | 863 | ssid = wpa_s->conf->ssid; |
ba2a573c | 864 | if (wpa_s->prev_scan_ssid != WILDCARD_SSID_SCAN) { |
6fc6879b JM |
865 | while (ssid) { |
866 | if (ssid == wpa_s->prev_scan_ssid) { | |
867 | ssid = ssid->next; | |
868 | break; | |
869 | } | |
870 | ssid = ssid->next; | |
871 | } | |
872 | } | |
6fc6879b | 873 | |
12455031 | 874 | if (wpa_s->last_scan_req != MANUAL_SCAN_REQ && |
0a34b62b JM |
875 | #ifdef CONFIG_AP |
876 | !wpa_s->ap_iface && | |
877 | #endif /* CONFIG_AP */ | |
12455031 | 878 | wpa_s->conf->ap_scan == 2) { |
7dcdcfd6 | 879 | wpa_s->connect_without_scan = NULL; |
b3aa456b | 880 | wpa_s->prev_scan_wildcard = 0; |
e76baaac JM |
881 | wpa_supplicant_assoc_try(wpa_s, ssid); |
882 | return; | |
883 | } else if (wpa_s->conf->ap_scan == 2) { | |
6fc6879b | 884 | /* |
ba2a573c JM |
885 | * User-initiated scan request in ap_scan == 2; scan with |
886 | * wildcard SSID. | |
6fc6879b | 887 | */ |
e76baaac | 888 | ssid = NULL; |
0f44ec8e PQ |
889 | } else if (wpa_s->reattach && wpa_s->current_ssid != NULL) { |
890 | /* | |
891 | * Perform single-channel single-SSID scan for | |
892 | * reassociate-to-same-BSS operation. | |
893 | */ | |
894 | /* Setup SSID */ | |
895 | ssid = wpa_s->current_ssid; | |
896 | wpa_hexdump_ascii(MSG_DEBUG, "Scan SSID", | |
897 | ssid->ssid, ssid->ssid_len); | |
898 | params.ssids[0].ssid = ssid->ssid; | |
899 | params.ssids[0].ssid_len = ssid->ssid_len; | |
900 | params.num_ssids = 1; | |
901 | ||
902 | /* | |
903 | * Allocate memory for frequency array, allocate one extra | |
904 | * slot for the zero-terminator. | |
905 | */ | |
906 | params.freqs = os_malloc(sizeof(int) * 2); | |
8e909fa9 JM |
907 | if (params.freqs) { |
908 | params.freqs[0] = wpa_s->assoc_freq; | |
909 | params.freqs[1] = 0; | |
0f44ec8e | 910 | } |
0f44ec8e PQ |
911 | |
912 | /* | |
913 | * Reset the reattach flag so that we fall back to full scan if | |
914 | * this scan fails. | |
915 | */ | |
916 | wpa_s->reattach = 0; | |
e76baaac | 917 | } else { |
5be45e2e | 918 | struct wpa_ssid *start = ssid, *tssid; |
d3a98225 | 919 | int freqs_set = 0; |
e76baaac JM |
920 | if (ssid == NULL && max_ssids > 1) |
921 | ssid = wpa_s->conf->ssid; | |
922 | while (ssid) { | |
349493bd JM |
923 | if (!wpas_network_disabled(wpa_s, ssid) && |
924 | ssid->scan_ssid) { | |
e76baaac JM |
925 | wpa_hexdump_ascii(MSG_DEBUG, "Scan SSID", |
926 | ssid->ssid, ssid->ssid_len); | |
927 | params.ssids[params.num_ssids].ssid = | |
928 | ssid->ssid; | |
929 | params.ssids[params.num_ssids].ssid_len = | |
930 | ssid->ssid_len; | |
931 | params.num_ssids++; | |
932 | if (params.num_ssids + 1 >= max_ssids) | |
933 | break; | |
934 | } | |
935 | ssid = ssid->next; | |
936 | if (ssid == start) | |
937 | break; | |
938 | if (ssid == NULL && max_ssids > 1 && | |
939 | start != wpa_s->conf->ssid) | |
940 | ssid = wpa_s->conf->ssid; | |
6fc6879b | 941 | } |
d3a98225 | 942 | |
6891f0e6 LJ |
943 | if (wpa_s->scan_id_count && |
944 | wpa_s->last_scan_req == MANUAL_SCAN_REQ) | |
945 | wpa_set_scan_ssids(wpa_s, ¶ms, max_ssids); | |
946 | ||
0855e2e1 JM |
947 | for (tssid = wpa_s->conf->ssid; |
948 | wpa_s->last_scan_req != MANUAL_SCAN_REQ && tssid; | |
949 | tssid = tssid->next) { | |
349493bd | 950 | if (wpas_network_disabled(wpa_s, tssid)) |
d3a98225 | 951 | continue; |
5be45e2e | 952 | if ((params.freqs || !freqs_set) && tssid->scan_freq) { |
d3a98225 | 953 | int_array_concat(¶ms.freqs, |
5be45e2e | 954 | tssid->scan_freq); |
d3a98225 JM |
955 | } else { |
956 | os_free(params.freqs); | |
957 | params.freqs = NULL; | |
958 | } | |
959 | freqs_set = 1; | |
960 | } | |
961 | int_array_sort_unique(params.freqs); | |
6fc6879b JM |
962 | } |
963 | ||
b3aa456b ES |
964 | if (ssid && max_ssids == 1) { |
965 | /* | |
966 | * If the driver is limited to 1 SSID at a time interleave | |
967 | * wildcard SSID scans with specific SSID scans to avoid | |
968 | * waiting a long time for a wildcard scan. | |
969 | */ | |
970 | if (!wpa_s->prev_scan_wildcard) { | |
971 | params.ssids[0].ssid = NULL; | |
972 | params.ssids[0].ssid_len = 0; | |
973 | wpa_s->prev_scan_wildcard = 1; | |
974 | wpa_dbg(wpa_s, MSG_DEBUG, "Starting AP scan for " | |
975 | "wildcard SSID (Interleave with specific)"); | |
976 | } else { | |
977 | wpa_s->prev_scan_ssid = ssid; | |
978 | wpa_s->prev_scan_wildcard = 0; | |
979 | wpa_dbg(wpa_s, MSG_DEBUG, | |
980 | "Starting AP scan for specific SSID: %s", | |
981 | wpa_ssid_txt(ssid->ssid, ssid->ssid_len)); | |
e76baaac | 982 | } |
b3aa456b ES |
983 | } else if (ssid) { |
984 | /* max_ssids > 1 */ | |
985 | ||
986 | wpa_s->prev_scan_ssid = ssid; | |
987 | wpa_dbg(wpa_s, MSG_DEBUG, "Include wildcard SSID in " | |
988 | "the scan request"); | |
989 | params.num_ssids++; | |
88c2d488 JM |
990 | } else if (wpa_s->last_scan_req == MANUAL_SCAN_REQ && |
991 | wpa_s->manual_scan_passive && params.num_ssids == 0) { | |
992 | wpa_dbg(wpa_s, MSG_DEBUG, "Use passive scan based on manual request"); | |
c35e35ed JM |
993 | } else if (wpa_s->conf->passive_scan) { |
994 | wpa_dbg(wpa_s, MSG_DEBUG, | |
995 | "Use passive scan based on configuration"); | |
e76baaac | 996 | } else { |
ba2a573c | 997 | wpa_s->prev_scan_ssid = WILDCARD_SSID_SCAN; |
e76baaac | 998 | params.num_ssids++; |
f049052b BG |
999 | wpa_dbg(wpa_s, MSG_DEBUG, "Starting AP scan for wildcard " |
1000 | "SSID"); | |
6fc6879b JM |
1001 | } |
1002 | ||
a80651d0 | 1003 | ssid_list_set: |
5f738a21 | 1004 | wpa_supplicant_optimize_freqs(wpa_s, ¶ms); |
a13e07ec | 1005 | extra_ie = wpa_supplicant_extra_ies(wpa_s); |
0e65037c | 1006 | |
949938aa | 1007 | if (wpa_s->last_scan_req == MANUAL_SCAN_REQ && |
2dbe63ad JM |
1008 | wpa_s->manual_scan_only_new) { |
1009 | wpa_printf(MSG_DEBUG, | |
1010 | "Request driver to clear scan cache due to manual only_new=1 scan"); | |
949938aa | 1011 | params.only_new_results = 1; |
2dbe63ad | 1012 | } |
949938aa | 1013 | |
fee52342 JM |
1014 | if (wpa_s->last_scan_req == MANUAL_SCAN_REQ && params.freqs == NULL && |
1015 | wpa_s->manual_scan_freqs) { | |
1016 | wpa_dbg(wpa_s, MSG_DEBUG, "Limit manual scan to specified channels"); | |
1017 | params.freqs = wpa_s->manual_scan_freqs; | |
1018 | wpa_s->manual_scan_freqs = NULL; | |
1019 | } | |
1020 | ||
f47d639d | 1021 | if (params.freqs == NULL && wpa_s->next_scan_freqs) { |
f049052b BG |
1022 | wpa_dbg(wpa_s, MSG_DEBUG, "Optimize scan based on previously " |
1023 | "generated frequency list"); | |
f47d639d JM |
1024 | params.freqs = wpa_s->next_scan_freqs; |
1025 | } else | |
1026 | os_free(wpa_s->next_scan_freqs); | |
1027 | wpa_s->next_scan_freqs = NULL; | |
faf9a858 | 1028 | wpa_setband_scan_freqs(wpa_s, ¶ms); |
f47d639d | 1029 | |
f5ffc348 BG |
1030 | /* See if user specified frequencies. If so, scan only those. */ |
1031 | if (wpa_s->conf->freq_list && !params.freqs) { | |
1032 | wpa_dbg(wpa_s, MSG_DEBUG, | |
1033 | "Optimize scan based on conf->freq_list"); | |
1034 | int_array_concat(¶ms.freqs, wpa_s->conf->freq_list); | |
1035 | } | |
1036 | ||
6124e858 BG |
1037 | /* Use current associated channel? */ |
1038 | if (wpa_s->conf->scan_cur_freq && !params.freqs) { | |
53c5dfc2 IP |
1039 | unsigned int num = wpa_s->num_multichan_concurrent; |
1040 | ||
1041 | params.freqs = os_calloc(num + 1, sizeof(int)); | |
1042 | if (params.freqs) { | |
1043 | num = get_shared_radio_freqs(wpa_s, params.freqs, num); | |
1044 | if (num > 0) { | |
1045 | wpa_dbg(wpa_s, MSG_DEBUG, "Scan only the " | |
1046 | "current operating channels since " | |
1047 | "scan_cur_freq is enabled"); | |
1048 | } else { | |
1049 | os_free(params.freqs); | |
1050 | params.freqs = NULL; | |
1051 | } | |
6124e858 BG |
1052 | } |
1053 | } | |
1054 | ||
3812464c JM |
1055 | params.filter_ssids = wpa_supplicant_build_filter_ssids( |
1056 | wpa_s->conf, ¶ms.num_filter_ssids); | |
46ee0427 JM |
1057 | if (extra_ie) { |
1058 | params.extra_ies = wpabuf_head(extra_ie); | |
1059 | params.extra_ies_len = wpabuf_len(extra_ie); | |
1060 | } | |
3812464c | 1061 | |
d1dd48e3 | 1062 | #ifdef CONFIG_P2P |
8235f89f | 1063 | if (wpa_s->p2p_in_provisioning || wpa_s->p2p_in_invitation || |
85ea132a | 1064 | (wpa_s->show_group_started && wpa_s->go_params)) { |
d1dd48e3 JM |
1065 | /* |
1066 | * The interface may not yet be in P2P mode, so we have to | |
1067 | * explicitly request P2P probe to disable CCK rates. | |
1068 | */ | |
1069 | params.p2p_probe = 1; | |
1070 | } | |
1071 | #endif /* CONFIG_P2P */ | |
1072 | ||
346b333d SD |
1073 | if ((wpa_s->mac_addr_rand_enable & MAC_ADDR_RAND_SCAN) && |
1074 | wpa_s->wpa_state <= WPA_SCANNING) { | |
56c76fa5 IP |
1075 | params.mac_addr_rand = 1; |
1076 | if (wpa_s->mac_addr_scan) { | |
1077 | params.mac_addr = wpa_s->mac_addr_scan; | |
1078 | params.mac_addr_mask = wpa_s->mac_addr_scan + ETH_ALEN; | |
1079 | } | |
1080 | } | |
1081 | ||
0645492e JM |
1082 | if (!is_zero_ether_addr(wpa_s->next_scan_bssid)) { |
1083 | struct wpa_bss *bss; | |
1084 | ||
1085 | params.bssid = wpa_s->next_scan_bssid; | |
1086 | bss = wpa_bss_get_bssid_latest(wpa_s, params.bssid); | |
1087 | if (bss && bss->ssid_len && params.num_ssids == 1 && | |
1088 | params.ssids[0].ssid_len == 0) { | |
1089 | params.ssids[0].ssid = bss->ssid; | |
1090 | params.ssids[0].ssid_len = bss->ssid_len; | |
1091 | wpa_dbg(wpa_s, MSG_DEBUG, | |
1092 | "Scan a previously specified BSSID " MACSTR | |
1093 | " and SSID %s", | |
1094 | MAC2STR(params.bssid), | |
1095 | wpa_ssid_txt(bss->ssid, bss->ssid_len)); | |
1096 | } else { | |
1097 | wpa_dbg(wpa_s, MSG_DEBUG, | |
1098 | "Scan a previously specified BSSID " MACSTR, | |
1099 | MAC2STR(params.bssid)); | |
1100 | } | |
1101 | } | |
1102 | ||
7c865c68 TB |
1103 | scan_params = ¶ms; |
1104 | ||
1105 | scan: | |
5cc70322 JM |
1106 | #ifdef CONFIG_P2P |
1107 | /* | |
1108 | * If the driver does not support multi-channel concurrency and a | |
1109 | * virtual interface that shares the same radio with the wpa_s interface | |
1110 | * is operating there may not be need to scan other channels apart from | |
1111 | * the current operating channel on the other virtual interface. Filter | |
1112 | * out other channels in case we are trying to find a connection for a | |
1113 | * station interface when we are not configured to prefer station | |
1114 | * connection and a concurrent operation is already in process. | |
1115 | */ | |
12455031 LP |
1116 | if (wpa_s->scan_for_connection && |
1117 | wpa_s->last_scan_req == NORMAL_SCAN_REQ && | |
5cc70322 JM |
1118 | !scan_params->freqs && !params.freqs && |
1119 | wpas_is_p2p_prioritized(wpa_s) && | |
5cc70322 JM |
1120 | wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE && |
1121 | non_p2p_network_enabled(wpa_s)) { | |
53c5dfc2 IP |
1122 | unsigned int num = wpa_s->num_multichan_concurrent; |
1123 | ||
1124 | params.freqs = os_calloc(num + 1, sizeof(int)); | |
1125 | if (params.freqs) { | |
1126 | num = get_shared_radio_freqs(wpa_s, params.freqs, num); | |
1127 | if (num > 0 && num == wpa_s->num_multichan_concurrent) { | |
1128 | wpa_dbg(wpa_s, MSG_DEBUG, "Scan only the current operating channels since all channels are already used"); | |
1129 | } else { | |
1130 | os_free(params.freqs); | |
1131 | params.freqs = NULL; | |
1132 | } | |
5cc70322 JM |
1133 | } |
1134 | } | |
1135 | #endif /* CONFIG_P2P */ | |
1136 | ||
7c865c68 | 1137 | ret = wpa_supplicant_trigger_scan(wpa_s, scan_params); |
6fc6879b | 1138 | |
fee52342 JM |
1139 | if (ret && wpa_s->last_scan_req == MANUAL_SCAN_REQ && params.freqs && |
1140 | !wpa_s->manual_scan_freqs) { | |
1141 | /* Restore manual_scan_freqs for the next attempt */ | |
1142 | wpa_s->manual_scan_freqs = params.freqs; | |
1143 | params.freqs = NULL; | |
1144 | } | |
1145 | ||
46ee0427 | 1146 | wpabuf_free(extra_ie); |
d3a98225 | 1147 | os_free(params.freqs); |
3812464c | 1148 | os_free(params.filter_ssids); |
ad08c363 | 1149 | |
6fc6879b | 1150 | if (ret) { |
f049052b | 1151 | wpa_msg(wpa_s, MSG_WARNING, "Failed to initiate AP scan"); |
2d9c99e3 JM |
1152 | if (wpa_s->scan_prev_wpa_state != wpa_s->wpa_state) |
1153 | wpa_supplicant_set_state(wpa_s, | |
1154 | wpa_s->scan_prev_wpa_state); | |
23270cd8 | 1155 | /* Restore scan_req since we will try to scan again */ |
12455031 | 1156 | wpa_s->scan_req = wpa_s->last_scan_req; |
1c4c9c50 | 1157 | wpa_supplicant_req_scan(wpa_s, 1, 0); |
5cc70322 JM |
1158 | } else { |
1159 | wpa_s->scan_for_connection = 0; | |
a8826b18 JM |
1160 | #ifdef CONFIG_INTERWORKING |
1161 | wpa_s->interworking_fast_assoc_tried = 0; | |
1162 | #endif /* CONFIG_INTERWORKING */ | |
0645492e JM |
1163 | if (params.bssid) |
1164 | os_memset(wpa_s->next_scan_bssid, 0, ETH_ALEN); | |
d902a9c1 | 1165 | } |
6fc6879b JM |
1166 | } |
1167 | ||
1168 | ||
9e737f08 PF |
1169 | void wpa_supplicant_update_scan_int(struct wpa_supplicant *wpa_s, int sec) |
1170 | { | |
594516b4 | 1171 | struct os_reltime remaining, new_int; |
9e737f08 PF |
1172 | int cancelled; |
1173 | ||
1174 | cancelled = eloop_cancel_timeout_one(wpa_supplicant_scan, wpa_s, NULL, | |
1175 | &remaining); | |
1176 | ||
1177 | new_int.sec = sec; | |
1178 | new_int.usec = 0; | |
594516b4 | 1179 | if (cancelled && os_reltime_before(&remaining, &new_int)) { |
9e737f08 PF |
1180 | new_int.sec = remaining.sec; |
1181 | new_int.usec = remaining.usec; | |
1182 | } | |
1183 | ||
c6f5dec9 PF |
1184 | if (cancelled) { |
1185 | eloop_register_timeout(new_int.sec, new_int.usec, | |
1186 | wpa_supplicant_scan, wpa_s, NULL); | |
1187 | } | |
9e737f08 PF |
1188 | wpa_s->scan_interval = sec; |
1189 | } | |
1190 | ||
1191 | ||
6fc6879b JM |
1192 | /** |
1193 | * wpa_supplicant_req_scan - Schedule a scan for neighboring access points | |
1194 | * @wpa_s: Pointer to wpa_supplicant data | |
1195 | * @sec: Number of seconds after which to scan | |
1196 | * @usec: Number of microseconds after which to scan | |
1197 | * | |
1198 | * This function is used to schedule a scan for neighboring access points after | |
1199 | * the specified time. | |
1200 | */ | |
1201 | void wpa_supplicant_req_scan(struct wpa_supplicant *wpa_s, int sec, int usec) | |
1202 | { | |
44b9ea5b JM |
1203 | int res; |
1204 | ||
1205 | if (wpa_s->p2p_mgmt) { | |
1206 | wpa_dbg(wpa_s, MSG_DEBUG, | |
1207 | "Ignore scan request (%d.%06d sec) on p2p_mgmt interface", | |
1208 | sec, usec); | |
1209 | return; | |
1210 | } | |
1211 | ||
1212 | res = eloop_deplete_timeout(sec, usec, wpa_supplicant_scan, wpa_s, | |
1213 | NULL); | |
a09ffd5f JM |
1214 | if (res == 1) { |
1215 | wpa_dbg(wpa_s, MSG_DEBUG, "Rescheduling scan request: %d.%06d sec", | |
e2f5a988 | 1216 | sec, usec); |
a09ffd5f JM |
1217 | } else if (res == 0) { |
1218 | wpa_dbg(wpa_s, MSG_DEBUG, "Ignore new scan request for %d.%06d sec since an earlier request is scheduled to trigger sooner", | |
1219 | sec, usec); | |
1220 | } else { | |
1221 | wpa_dbg(wpa_s, MSG_DEBUG, "Setting scan request: %d.%06d sec", | |
1222 | sec, usec); | |
1223 | eloop_register_timeout(sec, usec, wpa_supplicant_scan, wpa_s, NULL); | |
e2f5a988 | 1224 | } |
6fc6879b JM |
1225 | } |
1226 | ||
1227 | ||
6a90053c LC |
1228 | /** |
1229 | * wpa_supplicant_delayed_sched_scan - Request a delayed scheduled scan | |
1230 | * @wpa_s: Pointer to wpa_supplicant data | |
1231 | * @sec: Number of seconds after which to scan | |
1232 | * @usec: Number of microseconds after which to scan | |
2c09af30 | 1233 | * Returns: 0 on success or -1 otherwise |
6a90053c LC |
1234 | * |
1235 | * This function is used to schedule periodic scans for neighboring | |
1236 | * access points after the specified time. | |
1237 | */ | |
1238 | int wpa_supplicant_delayed_sched_scan(struct wpa_supplicant *wpa_s, | |
1239 | int sec, int usec) | |
1240 | { | |
1241 | if (!wpa_s->sched_scan_supported) | |
1242 | return -1; | |
1243 | ||
1244 | eloop_register_timeout(sec, usec, | |
1245 | wpa_supplicant_delayed_sched_scan_timeout, | |
1246 | wpa_s, NULL); | |
1247 | ||
1248 | return 0; | |
1249 | } | |
1250 | ||
1251 | ||
57c3a605 | 1252 | static void |
1253 | wpa_scan_set_relative_rssi_params(struct wpa_supplicant *wpa_s, | |
1254 | struct wpa_driver_scan_params *params) | |
1255 | { | |
1256 | if (wpa_s->wpa_state != WPA_COMPLETED || | |
1257 | !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SCHED_SCAN_RELATIVE_RSSI) || | |
1258 | wpa_s->srp.relative_rssi_set == 0) | |
1259 | return; | |
1260 | ||
1261 | params->relative_rssi_set = 1; | |
1262 | params->relative_rssi = wpa_s->srp.relative_rssi; | |
1263 | ||
1264 | if (wpa_s->srp.relative_adjust_rssi == 0) | |
1265 | return; | |
1266 | ||
1267 | params->relative_adjust_band = wpa_s->srp.relative_adjust_band; | |
1268 | params->relative_adjust_rssi = wpa_s->srp.relative_adjust_rssi; | |
1269 | } | |
1270 | ||
1271 | ||
cbdf3507 LC |
1272 | /** |
1273 | * wpa_supplicant_req_sched_scan - Start a periodic scheduled scan | |
1274 | * @wpa_s: Pointer to wpa_supplicant data | |
2c09af30 | 1275 | * Returns: 0 is sched_scan was started or -1 otherwise |
cbdf3507 LC |
1276 | * |
1277 | * This function is used to schedule periodic scans for neighboring | |
1278 | * access points repeating the scan continuously. | |
1279 | */ | |
1280 | int wpa_supplicant_req_sched_scan(struct wpa_supplicant *wpa_s) | |
1281 | { | |
1282 | struct wpa_driver_scan_params params; | |
7c865c68 | 1283 | struct wpa_driver_scan_params *scan_params; |
cbdf3507 | 1284 | enum wpa_states prev_state; |
7c865c68 | 1285 | struct wpa_ssid *ssid = NULL; |
a13e07ec | 1286 | struct wpabuf *extra_ie = NULL; |
cbdf3507 | 1287 | int ret; |
cbdf3507 | 1288 | unsigned int max_sched_scan_ssids; |
76a5249e | 1289 | int wildcard = 0; |
0b7a25c0 | 1290 | int need_ssids; |
32c02261 | 1291 | struct sched_scan_plan scan_plan; |
cbdf3507 LC |
1292 | |
1293 | if (!wpa_s->sched_scan_supported) | |
1294 | return -1; | |
1295 | ||
1296 | if (wpa_s->max_sched_scan_ssids > WPAS_MAX_SCAN_SSIDS) | |
1297 | max_sched_scan_ssids = WPAS_MAX_SCAN_SSIDS; | |
1298 | else | |
1299 | max_sched_scan_ssids = wpa_s->max_sched_scan_ssids; | |
54ddd743 | 1300 | if (max_sched_scan_ssids < 1 || wpa_s->conf->disable_scan_offload) |
76a5249e | 1301 | return -1; |
cbdf3507 | 1302 | |
14f34a73 AS |
1303 | wpa_s->sched_scan_stop_req = 0; |
1304 | ||
1966e3d1 ES |
1305 | if (wpa_s->sched_scanning) { |
1306 | wpa_dbg(wpa_s, MSG_DEBUG, "Already sched scanning"); | |
cbdf3507 | 1307 | return 0; |
1966e3d1 | 1308 | } |
cbdf3507 | 1309 | |
0b7a25c0 JM |
1310 | need_ssids = 0; |
1311 | for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { | |
349493bd | 1312 | if (!wpas_network_disabled(wpa_s, ssid) && !ssid->scan_ssid) { |
0b7a25c0 JM |
1313 | /* Use wildcard SSID to find this network */ |
1314 | wildcard = 1; | |
349493bd JM |
1315 | } else if (!wpas_network_disabled(wpa_s, ssid) && |
1316 | ssid->ssid_len) | |
0b7a25c0 | 1317 | need_ssids++; |
aa283ddd JM |
1318 | |
1319 | #ifdef CONFIG_WPS | |
349493bd | 1320 | if (!wpas_network_disabled(wpa_s, ssid) && |
fea7c3a0 | 1321 | ssid->key_mgmt == WPA_KEY_MGMT_WPS) { |
aa283ddd JM |
1322 | /* |
1323 | * Normal scan is more reliable and faster for WPS | |
1324 | * operations and since these are for short periods of | |
1325 | * time, the benefit of trying to use sched_scan would | |
1326 | * be limited. | |
1327 | */ | |
1328 | wpa_dbg(wpa_s, MSG_DEBUG, "Use normal scan instead of " | |
1329 | "sched_scan for WPS"); | |
1330 | return -1; | |
1331 | } | |
1332 | #endif /* CONFIG_WPS */ | |
0b7a25c0 JM |
1333 | } |
1334 | if (wildcard) | |
1335 | need_ssids++; | |
1336 | ||
1337 | if (wpa_s->normal_scans < 3 && | |
1338 | (need_ssids <= wpa_s->max_scan_ssids || | |
1339 | wpa_s->max_scan_ssids >= (int) max_sched_scan_ssids)) { | |
1340 | /* | |
1341 | * When normal scan can speed up operations, use that for the | |
1342 | * first operations before starting the sched_scan to allow | |
1343 | * user space sleep more. We do this only if the normal scan | |
1344 | * has functionality that is suitable for this or if the | |
1345 | * sched_scan does not have better support for multiple SSIDs. | |
1346 | */ | |
1347 | wpa_dbg(wpa_s, MSG_DEBUG, "Use normal scan instead of " | |
1348 | "sched_scan for initial scans (normal_scans=%d)", | |
1349 | wpa_s->normal_scans); | |
1350 | return -1; | |
1351 | } | |
1352 | ||
cbdf3507 LC |
1353 | os_memset(¶ms, 0, sizeof(params)); |
1354 | ||
b59e6f26 | 1355 | /* If we can't allocate space for the filters, we just don't filter */ |
faebdeaa | 1356 | params.filter_ssids = os_calloc(wpa_s->max_match_sets, |
b59e6f26 LC |
1357 | sizeof(struct wpa_driver_scan_filter)); |
1358 | ||
cbdf3507 LC |
1359 | prev_state = wpa_s->wpa_state; |
1360 | if (wpa_s->wpa_state == WPA_DISCONNECTED || | |
1361 | wpa_s->wpa_state == WPA_INACTIVE) | |
1362 | wpa_supplicant_set_state(wpa_s, WPA_SCANNING); | |
1363 | ||
7c865c68 TB |
1364 | if (wpa_s->autoscan_params != NULL) { |
1365 | scan_params = wpa_s->autoscan_params; | |
1366 | goto scan; | |
1367 | } | |
1368 | ||
cbdf3507 LC |
1369 | /* Find the starting point from which to continue scanning */ |
1370 | ssid = wpa_s->conf->ssid; | |
1371 | if (wpa_s->prev_sched_ssid) { | |
1372 | while (ssid) { | |
1373 | if (ssid == wpa_s->prev_sched_ssid) { | |
1374 | ssid = ssid->next; | |
1375 | break; | |
1376 | } | |
1377 | ssid = ssid->next; | |
1378 | } | |
1379 | } | |
1380 | ||
1381 | if (!ssid || !wpa_s->prev_sched_ssid) { | |
1382 | wpa_dbg(wpa_s, MSG_DEBUG, "Beginning of SSID list"); | |
cbdf3507 LC |
1383 | wpa_s->sched_scan_timeout = max_sched_scan_ssids * 2; |
1384 | wpa_s->first_sched_scan = 1; | |
1385 | ssid = wpa_s->conf->ssid; | |
1386 | wpa_s->prev_sched_ssid = ssid; | |
1387 | } | |
1388 | ||
76a5249e JM |
1389 | if (wildcard) { |
1390 | wpa_dbg(wpa_s, MSG_DEBUG, "Add wildcard SSID to sched_scan"); | |
1391 | params.num_ssids++; | |
1392 | } | |
1393 | ||
cbdf3507 | 1394 | while (ssid) { |
349493bd | 1395 | if (wpas_network_disabled(wpa_s, ssid)) |
5edddf41 | 1396 | goto next; |
cbdf3507 | 1397 | |
fcd16847 JM |
1398 | if (params.num_filter_ssids < wpa_s->max_match_sets && |
1399 | params.filter_ssids && ssid->ssid && ssid->ssid_len) { | |
1966e3d1 ES |
1400 | wpa_dbg(wpa_s, MSG_DEBUG, "add to filter ssid: %s", |
1401 | wpa_ssid_txt(ssid->ssid, ssid->ssid_len)); | |
b59e6f26 LC |
1402 | os_memcpy(params.filter_ssids[params.num_filter_ssids].ssid, |
1403 | ssid->ssid, ssid->ssid_len); | |
1404 | params.filter_ssids[params.num_filter_ssids].ssid_len = | |
1405 | ssid->ssid_len; | |
1406 | params.num_filter_ssids++; | |
86b47aaf JM |
1407 | } else if (params.filter_ssids && ssid->ssid && ssid->ssid_len) |
1408 | { | |
1409 | wpa_dbg(wpa_s, MSG_DEBUG, "Not enough room for SSID " | |
1410 | "filter for sched_scan - drop filter"); | |
1411 | os_free(params.filter_ssids); | |
1412 | params.filter_ssids = NULL; | |
1413 | params.num_filter_ssids = 0; | |
b59e6f26 LC |
1414 | } |
1415 | ||
3f56f3a4 | 1416 | if (ssid->scan_ssid && ssid->ssid && ssid->ssid_len) { |
76a5249e JM |
1417 | if (params.num_ssids == max_sched_scan_ssids) |
1418 | break; /* only room for broadcast SSID */ | |
3f56f3a4 JM |
1419 | wpa_dbg(wpa_s, MSG_DEBUG, |
1420 | "add to active scan ssid: %s", | |
1966e3d1 | 1421 | wpa_ssid_txt(ssid->ssid, ssid->ssid_len)); |
cbdf3507 LC |
1422 | params.ssids[params.num_ssids].ssid = |
1423 | ssid->ssid; | |
1424 | params.ssids[params.num_ssids].ssid_len = | |
1425 | ssid->ssid_len; | |
1426 | params.num_ssids++; | |
b59e6f26 | 1427 | if (params.num_ssids >= max_sched_scan_ssids) { |
cbdf3507 | 1428 | wpa_s->prev_sched_ssid = ssid; |
b55aca46 JM |
1429 | do { |
1430 | ssid = ssid->next; | |
1431 | } while (ssid && | |
349493bd | 1432 | (wpas_network_disabled(wpa_s, ssid) || |
fea7c3a0 | 1433 | !ssid->scan_ssid)); |
cbdf3507 LC |
1434 | break; |
1435 | } | |
1436 | } | |
b59e6f26 | 1437 | |
5edddf41 | 1438 | next: |
cbdf3507 LC |
1439 | wpa_s->prev_sched_ssid = ssid; |
1440 | ssid = ssid->next; | |
1441 | } | |
1442 | ||
7c6a266c JM |
1443 | if (params.num_filter_ssids == 0) { |
1444 | os_free(params.filter_ssids); | |
1445 | params.filter_ssids = NULL; | |
1446 | } | |
1447 | ||
a13e07ec ES |
1448 | extra_ie = wpa_supplicant_extra_ies(wpa_s); |
1449 | if (extra_ie) { | |
1450 | params.extra_ies = wpabuf_head(extra_ie); | |
1451 | params.extra_ies_len = wpabuf_len(extra_ie); | |
1452 | } | |
cbdf3507 | 1453 | |
cf70d298 RM |
1454 | if (wpa_s->conf->filter_rssi) |
1455 | params.filter_rssi = wpa_s->conf->filter_rssi; | |
1456 | ||
1cc0d6a0 BP |
1457 | /* See if user specified frequencies. If so, scan only those. */ |
1458 | if (wpa_s->conf->freq_list && !params.freqs) { | |
1459 | wpa_dbg(wpa_s, MSG_DEBUG, | |
1460 | "Optimize scan based on conf->freq_list"); | |
1461 | int_array_concat(¶ms.freqs, wpa_s->conf->freq_list); | |
1462 | } | |
1463 | ||
7c865c68 TB |
1464 | scan_params = ¶ms; |
1465 | ||
1466 | scan: | |
32c02261 AS |
1467 | wpa_s->sched_scan_timed_out = 0; |
1468 | ||
1469 | /* | |
1470 | * We cannot support multiple scan plans if the scan request includes | |
1471 | * too many SSID's, so in this case use only the last scan plan and make | |
1472 | * it run infinitely. It will be stopped by the timeout. | |
1473 | */ | |
1474 | if (wpa_s->sched_scan_plans_num == 1 || | |
1475 | (wpa_s->sched_scan_plans_num && !ssid && wpa_s->first_sched_scan)) { | |
1476 | params.sched_scan_plans = wpa_s->sched_scan_plans; | |
1477 | params.sched_scan_plans_num = wpa_s->sched_scan_plans_num; | |
1478 | } else if (wpa_s->sched_scan_plans_num > 1) { | |
a8cb5a88 | 1479 | wpa_dbg(wpa_s, MSG_DEBUG, |
32c02261 AS |
1480 | "Too many SSIDs. Default to using single scheduled_scan plan"); |
1481 | params.sched_scan_plans = | |
1482 | &wpa_s->sched_scan_plans[wpa_s->sched_scan_plans_num - | |
1483 | 1]; | |
1484 | params.sched_scan_plans_num = 1; | |
7d21a223 | 1485 | } else { |
32c02261 AS |
1486 | if (wpa_s->conf->sched_scan_interval) |
1487 | scan_plan.interval = wpa_s->conf->sched_scan_interval; | |
1488 | else | |
1489 | scan_plan.interval = 10; | |
1490 | ||
1491 | if (scan_plan.interval > wpa_s->max_sched_scan_plan_interval) { | |
1492 | wpa_printf(MSG_WARNING, | |
1493 | "Scan interval too long(%u), use the maximum allowed(%u)", | |
1494 | scan_plan.interval, | |
1495 | wpa_s->max_sched_scan_plan_interval); | |
1496 | scan_plan.interval = | |
1497 | wpa_s->max_sched_scan_plan_interval; | |
1498 | } | |
1499 | ||
1500 | scan_plan.iterations = 0; | |
1501 | params.sched_scan_plans = &scan_plan; | |
1502 | params.sched_scan_plans_num = 1; | |
1503 | } | |
1504 | ||
1505 | if (ssid || !wpa_s->first_sched_scan) { | |
7d21a223 | 1506 | wpa_dbg(wpa_s, MSG_DEBUG, |
32c02261 AS |
1507 | "Starting sched scan: interval %u timeout %d", |
1508 | params.sched_scan_plans[0].interval, | |
1509 | wpa_s->sched_scan_timeout); | |
1510 | } else { | |
1511 | wpa_dbg(wpa_s, MSG_DEBUG, "Starting sched scan (no timeout)"); | |
a8cb5a88 | 1512 | } |
cbdf3507 | 1513 | |
faf9a858 JM |
1514 | wpa_setband_scan_freqs(wpa_s, scan_params); |
1515 | ||
346b333d SD |
1516 | if ((wpa_s->mac_addr_rand_enable & MAC_ADDR_RAND_SCHED_SCAN) && |
1517 | wpa_s->wpa_state <= WPA_SCANNING) { | |
56c76fa5 IP |
1518 | params.mac_addr_rand = 1; |
1519 | if (wpa_s->mac_addr_sched_scan) { | |
1520 | params.mac_addr = wpa_s->mac_addr_sched_scan; | |
1521 | params.mac_addr_mask = wpa_s->mac_addr_sched_scan + | |
1522 | ETH_ALEN; | |
1523 | } | |
1524 | } | |
1525 | ||
57c3a605 | 1526 | wpa_scan_set_relative_rssi_params(wpa_s, scan_params); |
1527 | ||
32c02261 | 1528 | ret = wpa_supplicant_start_sched_scan(wpa_s, scan_params); |
a13e07ec | 1529 | wpabuf_free(extra_ie); |
b59e6f26 | 1530 | os_free(params.filter_ssids); |
cbdf3507 LC |
1531 | if (ret) { |
1532 | wpa_msg(wpa_s, MSG_WARNING, "Failed to initiate sched scan"); | |
1533 | if (prev_state != wpa_s->wpa_state) | |
1534 | wpa_supplicant_set_state(wpa_s, prev_state); | |
1535 | return ret; | |
1536 | } | |
1537 | ||
1538 | /* If we have more SSIDs to scan, add a timeout so we scan them too */ | |
1539 | if (ssid || !wpa_s->first_sched_scan) { | |
1540 | wpa_s->sched_scan_timed_out = 0; | |
1541 | eloop_register_timeout(wpa_s->sched_scan_timeout, 0, | |
1542 | wpa_supplicant_sched_scan_timeout, | |
1543 | wpa_s, NULL); | |
1544 | wpa_s->first_sched_scan = 0; | |
1545 | wpa_s->sched_scan_timeout /= 2; | |
32c02261 AS |
1546 | params.sched_scan_plans[0].interval *= 2; |
1547 | if ((unsigned int) wpa_s->sched_scan_timeout < | |
1548 | params.sched_scan_plans[0].interval || | |
1549 | params.sched_scan_plans[0].interval > | |
1550 | wpa_s->max_sched_scan_plan_interval) { | |
1551 | params.sched_scan_plans[0].interval = 10; | |
a09fc1cc DS |
1552 | wpa_s->sched_scan_timeout = max_sched_scan_ssids * 2; |
1553 | } | |
cbdf3507 LC |
1554 | } |
1555 | ||
7ed52f67 DS |
1556 | /* If there is no more ssids, start next time from the beginning */ |
1557 | if (!ssid) | |
1558 | wpa_s->prev_sched_ssid = NULL; | |
1559 | ||
cbdf3507 LC |
1560 | return 0; |
1561 | } | |
1562 | ||
1563 | ||
6fc6879b JM |
1564 | /** |
1565 | * wpa_supplicant_cancel_scan - Cancel a scheduled scan request | |
1566 | * @wpa_s: Pointer to wpa_supplicant data | |
1567 | * | |
1568 | * This function is used to cancel a scan request scheduled with | |
1569 | * wpa_supplicant_req_scan(). | |
1570 | */ | |
1571 | void wpa_supplicant_cancel_scan(struct wpa_supplicant *wpa_s) | |
1572 | { | |
f049052b | 1573 | wpa_dbg(wpa_s, MSG_DEBUG, "Cancelling scan request"); |
6fc6879b JM |
1574 | eloop_cancel_timeout(wpa_supplicant_scan, wpa_s, NULL); |
1575 | } | |
cb8564b1 DW |
1576 | |
1577 | ||
831770bf CZ |
1578 | /** |
1579 | * wpa_supplicant_cancel_delayed_sched_scan - Stop a delayed scheduled scan | |
1580 | * @wpa_s: Pointer to wpa_supplicant data | |
1581 | * | |
1582 | * This function is used to stop a delayed scheduled scan. | |
1583 | */ | |
1584 | void wpa_supplicant_cancel_delayed_sched_scan(struct wpa_supplicant *wpa_s) | |
1585 | { | |
1586 | if (!wpa_s->sched_scan_supported) | |
1587 | return; | |
1588 | ||
1589 | wpa_dbg(wpa_s, MSG_DEBUG, "Cancelling delayed sched scan"); | |
1590 | eloop_cancel_timeout(wpa_supplicant_delayed_sched_scan_timeout, | |
1591 | wpa_s, NULL); | |
1592 | } | |
1593 | ||
1594 | ||
cbdf3507 LC |
1595 | /** |
1596 | * wpa_supplicant_cancel_sched_scan - Stop running scheduled scans | |
1597 | * @wpa_s: Pointer to wpa_supplicant data | |
1598 | * | |
1599 | * This function is used to stop a periodic scheduled scan. | |
1600 | */ | |
1601 | void wpa_supplicant_cancel_sched_scan(struct wpa_supplicant *wpa_s) | |
1602 | { | |
1603 | if (!wpa_s->sched_scanning) | |
1604 | return; | |
1605 | ||
14f34a73 AS |
1606 | if (wpa_s->sched_scanning) |
1607 | wpa_s->sched_scan_stop_req = 1; | |
1608 | ||
cbdf3507 LC |
1609 | wpa_dbg(wpa_s, MSG_DEBUG, "Cancelling sched scan"); |
1610 | eloop_cancel_timeout(wpa_supplicant_sched_scan_timeout, wpa_s, NULL); | |
1611 | wpa_supplicant_stop_sched_scan(wpa_s); | |
1612 | } | |
1613 | ||
1614 | ||
2c09af30 JM |
1615 | /** |
1616 | * wpa_supplicant_notify_scanning - Indicate possible scan state change | |
1617 | * @wpa_s: Pointer to wpa_supplicant data | |
1618 | * @scanning: Whether scanning is currently in progress | |
1619 | * | |
1620 | * This function is to generate scanning notifycations. It is called whenever | |
1621 | * there may have been a change in scanning (scan started, completed, stopped). | |
1622 | * wpas_notify_scanning() is called whenever the scanning state changed from the | |
1623 | * previously notified state. | |
1624 | */ | |
cb8564b1 DW |
1625 | void wpa_supplicant_notify_scanning(struct wpa_supplicant *wpa_s, |
1626 | int scanning) | |
1627 | { | |
1628 | if (wpa_s->scanning != scanning) { | |
1629 | wpa_s->scanning = scanning; | |
8bac466b | 1630 | wpas_notify_scanning(wpa_s); |
cb8564b1 DW |
1631 | } |
1632 | } | |
1633 | ||
9ba9fa07 JM |
1634 | |
1635 | static int wpa_scan_get_max_rate(const struct wpa_scan_res *res) | |
1636 | { | |
1637 | int rate = 0; | |
1638 | const u8 *ie; | |
1639 | int i; | |
1640 | ||
1641 | ie = wpa_scan_get_ie(res, WLAN_EID_SUPP_RATES); | |
1642 | for (i = 0; ie && i < ie[1]; i++) { | |
1643 | if ((ie[i + 2] & 0x7f) > rate) | |
1644 | rate = ie[i + 2] & 0x7f; | |
1645 | } | |
1646 | ||
1647 | ie = wpa_scan_get_ie(res, WLAN_EID_EXT_SUPP_RATES); | |
1648 | for (i = 0; ie && i < ie[1]; i++) { | |
1649 | if ((ie[i + 2] & 0x7f) > rate) | |
1650 | rate = ie[i + 2] & 0x7f; | |
1651 | } | |
1652 | ||
1653 | return rate; | |
1654 | } | |
1655 | ||
1656 | ||
2c09af30 JM |
1657 | /** |
1658 | * wpa_scan_get_ie - Fetch a specified information element from a scan result | |
1659 | * @res: Scan result entry | |
1660 | * @ie: Information element identitifier (WLAN_EID_*) | |
1661 | * Returns: Pointer to the information element (id field) or %NULL if not found | |
1662 | * | |
1663 | * This function returns the first matching information element in the scan | |
1664 | * result. | |
1665 | */ | |
d1f9c410 JM |
1666 | const u8 * wpa_scan_get_ie(const struct wpa_scan_res *res, u8 ie) |
1667 | { | |
d044d2f7 EP |
1668 | size_t ie_len = res->ie_len; |
1669 | ||
1670 | /* Use the Beacon frame IEs if res->ie_len is not available */ | |
1671 | if (!ie_len) | |
1672 | ie_len = res->beacon_ie_len; | |
1673 | ||
1674 | return get_ie((const u8 *) (res + 1), ie_len, ie); | |
d1f9c410 JM |
1675 | } |
1676 | ||
1677 | ||
2c09af30 JM |
1678 | /** |
1679 | * wpa_scan_get_vendor_ie - Fetch vendor information element from a scan result | |
1680 | * @res: Scan result entry | |
1681 | * @vendor_type: Vendor type (four octets starting the IE payload) | |
1682 | * Returns: Pointer to the information element (id field) or %NULL if not found | |
1683 | * | |
1684 | * This function returns the first matching information element in the scan | |
1685 | * result. | |
1686 | */ | |
9ba9fa07 JM |
1687 | const u8 * wpa_scan_get_vendor_ie(const struct wpa_scan_res *res, |
1688 | u32 vendor_type) | |
1689 | { | |
1690 | const u8 *end, *pos; | |
1691 | ||
1692 | pos = (const u8 *) (res + 1); | |
1693 | end = pos + res->ie_len; | |
1694 | ||
904e977b JM |
1695 | while (end - pos > 1) { |
1696 | if (2 + pos[1] > end - pos) | |
9ba9fa07 JM |
1697 | break; |
1698 | if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 && | |
1699 | vendor_type == WPA_GET_BE32(&pos[2])) | |
1700 | return pos; | |
1701 | pos += 2 + pos[1]; | |
1702 | } | |
1703 | ||
1704 | return NULL; | |
1705 | } | |
1706 | ||
1707 | ||
aaeb9c98 JM |
1708 | /** |
1709 | * wpa_scan_get_vendor_ie_beacon - Fetch vendor information from a scan result | |
1710 | * @res: Scan result entry | |
1711 | * @vendor_type: Vendor type (four octets starting the IE payload) | |
1712 | * Returns: Pointer to the information element (id field) or %NULL if not found | |
1713 | * | |
1714 | * This function returns the first matching information element in the scan | |
1715 | * result. | |
1716 | * | |
1717 | * This function is like wpa_scan_get_vendor_ie(), but uses IE buffer only | |
1718 | * from Beacon frames instead of either Beacon or Probe Response frames. | |
1719 | */ | |
1720 | const u8 * wpa_scan_get_vendor_ie_beacon(const struct wpa_scan_res *res, | |
1721 | u32 vendor_type) | |
1722 | { | |
1723 | const u8 *end, *pos; | |
1724 | ||
1725 | if (res->beacon_ie_len == 0) | |
1726 | return NULL; | |
1727 | ||
1728 | pos = (const u8 *) (res + 1); | |
1729 | pos += res->ie_len; | |
1730 | end = pos + res->beacon_ie_len; | |
1731 | ||
904e977b JM |
1732 | while (end - pos > 1) { |
1733 | if (2 + pos[1] > end - pos) | |
aaeb9c98 JM |
1734 | break; |
1735 | if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 && | |
1736 | vendor_type == WPA_GET_BE32(&pos[2])) | |
1737 | return pos; | |
1738 | pos += 2 + pos[1]; | |
1739 | } | |
1740 | ||
1741 | return NULL; | |
1742 | } | |
1743 | ||
1744 | ||
2c09af30 JM |
1745 | /** |
1746 | * wpa_scan_get_vendor_ie_multi - Fetch vendor IE data from a scan result | |
1747 | * @res: Scan result entry | |
1748 | * @vendor_type: Vendor type (four octets starting the IE payload) | |
1749 | * Returns: Pointer to the information element payload or %NULL if not found | |
1750 | * | |
1751 | * This function returns concatenated payload of possibly fragmented vendor | |
1752 | * specific information elements in the scan result. The caller is responsible | |
1753 | * for freeing the returned buffer. | |
1754 | */ | |
9ba9fa07 JM |
1755 | struct wpabuf * wpa_scan_get_vendor_ie_multi(const struct wpa_scan_res *res, |
1756 | u32 vendor_type) | |
1757 | { | |
1758 | struct wpabuf *buf; | |
1759 | const u8 *end, *pos; | |
1760 | ||
1761 | buf = wpabuf_alloc(res->ie_len); | |
1762 | if (buf == NULL) | |
1763 | return NULL; | |
1764 | ||
1765 | pos = (const u8 *) (res + 1); | |
1766 | end = pos + res->ie_len; | |
1767 | ||
904e977b JM |
1768 | while (end - pos > 1) { |
1769 | if (2 + pos[1] > end - pos) | |
54f489be JM |
1770 | break; |
1771 | if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 && | |
1772 | vendor_type == WPA_GET_BE32(&pos[2])) | |
1773 | wpabuf_put_data(buf, pos + 2 + 4, pos[1] - 4); | |
1774 | pos += 2 + pos[1]; | |
1775 | } | |
1776 | ||
1777 | if (wpabuf_len(buf) == 0) { | |
1778 | wpabuf_free(buf); | |
1779 | buf = NULL; | |
1780 | } | |
1781 | ||
1782 | return buf; | |
1783 | } | |
1784 | ||
1785 | ||
577db0ae GM |
1786 | /* |
1787 | * Channels with a great SNR can operate at full rate. What is a great SNR? | |
1788 | * This doc https://supportforums.cisco.com/docs/DOC-12954 says, "the general | |
1789 | * rule of thumb is that any SNR above 20 is good." This one | |
1790 | * http://www.cisco.com/en/US/tech/tk722/tk809/technologies_q_and_a_item09186a00805e9a96.shtml#qa23 | |
1791 | * recommends 25 as a minimum SNR for 54 Mbps data rate. 30 is chosen here as a | |
1792 | * conservative value. | |
1793 | */ | |
1794 | #define GREAT_SNR 30 | |
1795 | ||
f0d0a5d2 MA |
1796 | #define IS_5GHZ(n) (n > 4000) |
1797 | ||
9ba9fa07 JM |
1798 | /* Compare function for sorting scan results. Return >0 if @b is considered |
1799 | * better. */ | |
1800 | static int wpa_scan_result_compar(const void *a, const void *b) | |
1801 | { | |
577db0ae | 1802 | #define MIN(a,b) a < b ? a : b |
9ba9fa07 JM |
1803 | struct wpa_scan_res **_wa = (void *) a; |
1804 | struct wpa_scan_res **_wb = (void *) b; | |
1805 | struct wpa_scan_res *wa = *_wa; | |
1806 | struct wpa_scan_res *wb = *_wb; | |
a1b790eb JM |
1807 | int wpa_a, wpa_b; |
1808 | int snr_a, snr_b, snr_a_full, snr_b_full; | |
9ba9fa07 JM |
1809 | |
1810 | /* WPA/WPA2 support preferred */ | |
1811 | wpa_a = wpa_scan_get_vendor_ie(wa, WPA_IE_VENDOR_TYPE) != NULL || | |
1812 | wpa_scan_get_ie(wa, WLAN_EID_RSN) != NULL; | |
1813 | wpa_b = wpa_scan_get_vendor_ie(wb, WPA_IE_VENDOR_TYPE) != NULL || | |
1814 | wpa_scan_get_ie(wb, WLAN_EID_RSN) != NULL; | |
1815 | ||
1816 | if (wpa_b && !wpa_a) | |
1817 | return 1; | |
1818 | if (!wpa_b && wpa_a) | |
1819 | return -1; | |
1820 | ||
1821 | /* privacy support preferred */ | |
1822 | if ((wa->caps & IEEE80211_CAP_PRIVACY) == 0 && | |
1823 | (wb->caps & IEEE80211_CAP_PRIVACY)) | |
1824 | return 1; | |
1825 | if ((wa->caps & IEEE80211_CAP_PRIVACY) && | |
1826 | (wb->caps & IEEE80211_CAP_PRIVACY) == 0) | |
1827 | return -1; | |
1828 | ||
f0d0a5d2 | 1829 | if (wa->flags & wb->flags & WPA_SCAN_LEVEL_DBM) { |
a1b790eb JM |
1830 | snr_a_full = wa->snr; |
1831 | snr_a = MIN(wa->snr, GREAT_SNR); | |
1832 | snr_b_full = wb->snr; | |
aa517ae2 | 1833 | snr_b = MIN(wb->snr, GREAT_SNR); |
577db0ae | 1834 | } else { |
f0d0a5d2 MA |
1835 | /* Level is not in dBm, so we can't calculate |
1836 | * SNR. Just use raw level (units unknown). */ | |
a1b790eb JM |
1837 | snr_a = snr_a_full = wa->level; |
1838 | snr_b = snr_b_full = wb->level; | |
577db0ae GM |
1839 | } |
1840 | ||
f0d0a5d2 MA |
1841 | /* if SNR is close, decide by max rate or frequency band */ |
1842 | if ((snr_a && snr_b && abs(snr_b - snr_a) < 5) || | |
9ba9fa07 | 1843 | (wa->qual && wb->qual && abs(wb->qual - wa->qual) < 10)) { |
a1b790eb JM |
1844 | if (wa->est_throughput != wb->est_throughput) |
1845 | return wb->est_throughput - wa->est_throughput; | |
577db0ae GM |
1846 | if (IS_5GHZ(wa->freq) ^ IS_5GHZ(wb->freq)) |
1847 | return IS_5GHZ(wa->freq) ? -1 : 1; | |
9ba9fa07 JM |
1848 | } |
1849 | ||
577db0ae | 1850 | /* all things being equal, use SNR; if SNRs are |
9ba9fa07 JM |
1851 | * identical, use quality values since some drivers may only report |
1852 | * that value and leave the signal level zero */ | |
a1b790eb | 1853 | if (snr_b_full == snr_a_full) |
9ba9fa07 | 1854 | return wb->qual - wa->qual; |
a1b790eb | 1855 | return snr_b_full - snr_a_full; |
577db0ae | 1856 | #undef MIN |
9ba9fa07 JM |
1857 | } |
1858 | ||
1859 | ||
41e650ae JM |
1860 | #ifdef CONFIG_WPS |
1861 | /* Compare function for sorting scan results when searching a WPS AP for | |
1862 | * provisioning. Return >0 if @b is considered better. */ | |
1863 | static int wpa_scan_result_wps_compar(const void *a, const void *b) | |
1864 | { | |
1865 | struct wpa_scan_res **_wa = (void *) a; | |
1866 | struct wpa_scan_res **_wb = (void *) b; | |
1867 | struct wpa_scan_res *wa = *_wa; | |
1868 | struct wpa_scan_res *wb = *_wb; | |
1869 | int uses_wps_a, uses_wps_b; | |
1870 | struct wpabuf *wps_a, *wps_b; | |
1871 | int res; | |
1872 | ||
1873 | /* Optimization - check WPS IE existence before allocated memory and | |
1874 | * doing full reassembly. */ | |
1875 | uses_wps_a = wpa_scan_get_vendor_ie(wa, WPS_IE_VENDOR_TYPE) != NULL; | |
1876 | uses_wps_b = wpa_scan_get_vendor_ie(wb, WPS_IE_VENDOR_TYPE) != NULL; | |
1877 | if (uses_wps_a && !uses_wps_b) | |
1878 | return -1; | |
1879 | if (!uses_wps_a && uses_wps_b) | |
1880 | return 1; | |
1881 | ||
1882 | if (uses_wps_a && uses_wps_b) { | |
1883 | wps_a = wpa_scan_get_vendor_ie_multi(wa, WPS_IE_VENDOR_TYPE); | |
1884 | wps_b = wpa_scan_get_vendor_ie_multi(wb, WPS_IE_VENDOR_TYPE); | |
1885 | res = wps_ap_priority_compar(wps_a, wps_b); | |
1886 | wpabuf_free(wps_a); | |
1887 | wpabuf_free(wps_b); | |
1888 | if (res) | |
1889 | return res; | |
1890 | } | |
1891 | ||
1892 | /* | |
1893 | * Do not use current AP security policy as a sorting criteria during | |
1894 | * WPS provisioning step since the AP may get reconfigured at the | |
1895 | * completion of provisioning. | |
1896 | */ | |
1897 | ||
1898 | /* all things being equal, use signal level; if signal levels are | |
1899 | * identical, use quality values since some drivers may only report | |
1900 | * that value and leave the signal level zero */ | |
1901 | if (wb->level == wa->level) | |
1902 | return wb->qual - wa->qual; | |
1903 | return wb->level - wa->level; | |
1904 | } | |
1905 | #endif /* CONFIG_WPS */ | |
1906 | ||
1907 | ||
aa820e02 JM |
1908 | static void dump_scan_res(struct wpa_scan_results *scan_res) |
1909 | { | |
76202aed | 1910 | #ifndef CONFIG_NO_STDOUT_DEBUG |
aa820e02 JM |
1911 | size_t i; |
1912 | ||
1913 | if (scan_res->res == NULL || scan_res->num == 0) | |
1914 | return; | |
1915 | ||
1916 | wpa_printf(MSG_EXCESSIVE, "Sorted scan results"); | |
1917 | ||
1918 | for (i = 0; i < scan_res->num; i++) { | |
1919 | struct wpa_scan_res *r = scan_res->res[i]; | |
1cbe86e2 | 1920 | u8 *pos; |
f0d0a5d2 | 1921 | if (r->flags & WPA_SCAN_LEVEL_DBM) { |
f0d0a5d2 MA |
1922 | int noise_valid = !(r->flags & WPA_SCAN_NOISE_INVALID); |
1923 | ||
aa820e02 | 1924 | wpa_printf(MSG_EXCESSIVE, MACSTR " freq=%d qual=%d " |
a1b790eb | 1925 | "noise=%d%s level=%d snr=%d%s flags=0x%x age=%u est=%u", |
aa820e02 | 1926 | MAC2STR(r->bssid), r->freq, r->qual, |
f0d0a5d2 | 1927 | r->noise, noise_valid ? "" : "~", r->level, |
a1b790eb JM |
1928 | r->snr, r->snr >= GREAT_SNR ? "*" : "", |
1929 | r->flags, | |
1930 | r->age, r->est_throughput); | |
aa820e02 JM |
1931 | } else { |
1932 | wpa_printf(MSG_EXCESSIVE, MACSTR " freq=%d qual=%d " | |
a1b790eb | 1933 | "noise=%d level=%d flags=0x%x age=%u est=%u", |
aa820e02 | 1934 | MAC2STR(r->bssid), r->freq, r->qual, |
a1b790eb JM |
1935 | r->noise, r->level, r->flags, r->age, |
1936 | r->est_throughput); | |
aa820e02 | 1937 | } |
1cbe86e2 JM |
1938 | pos = (u8 *) (r + 1); |
1939 | if (r->ie_len) | |
1940 | wpa_hexdump(MSG_EXCESSIVE, "IEs", pos, r->ie_len); | |
1941 | pos += r->ie_len; | |
1942 | if (r->beacon_ie_len) | |
1943 | wpa_hexdump(MSG_EXCESSIVE, "Beacon IEs", | |
1944 | pos, r->beacon_ie_len); | |
aa820e02 | 1945 | } |
76202aed | 1946 | #endif /* CONFIG_NO_STDOUT_DEBUG */ |
aa820e02 JM |
1947 | } |
1948 | ||
1949 | ||
2c09af30 JM |
1950 | /** |
1951 | * wpa_supplicant_filter_bssid_match - Is the specified BSSID allowed | |
1952 | * @wpa_s: Pointer to wpa_supplicant data | |
1953 | * @bssid: BSSID to check | |
1954 | * Returns: 0 if the BSSID is filtered or 1 if not | |
1955 | * | |
1956 | * This function is used to filter out specific BSSIDs from scan reslts mainly | |
1957 | * for testing purposes (SET bssid_filter ctrl_iface command). | |
1958 | */ | |
d445a5cd JM |
1959 | int wpa_supplicant_filter_bssid_match(struct wpa_supplicant *wpa_s, |
1960 | const u8 *bssid) | |
1961 | { | |
1962 | size_t i; | |
1963 | ||
1964 | if (wpa_s->bssid_filter == NULL) | |
1965 | return 1; | |
1966 | ||
1967 | for (i = 0; i < wpa_s->bssid_filter_count; i++) { | |
1968 | if (os_memcmp(wpa_s->bssid_filter + i * ETH_ALEN, bssid, | |
1969 | ETH_ALEN) == 0) | |
1970 | return 1; | |
1971 | } | |
1972 | ||
1973 | return 0; | |
1974 | } | |
1975 | ||
1976 | ||
2f195639 KV |
1977 | void filter_scan_res(struct wpa_supplicant *wpa_s, |
1978 | struct wpa_scan_results *res) | |
d445a5cd JM |
1979 | { |
1980 | size_t i, j; | |
1981 | ||
1982 | if (wpa_s->bssid_filter == NULL) | |
1983 | return; | |
1984 | ||
1985 | for (i = 0, j = 0; i < res->num; i++) { | |
1986 | if (wpa_supplicant_filter_bssid_match(wpa_s, | |
1987 | res->res[i]->bssid)) { | |
1988 | res->res[j++] = res->res[i]; | |
1989 | } else { | |
1990 | os_free(res->res[i]); | |
1991 | res->res[i] = NULL; | |
1992 | } | |
1993 | } | |
1994 | ||
1995 | if (res->num != j) { | |
1996 | wpa_printf(MSG_DEBUG, "Filtered out %d scan results", | |
1997 | (int) (res->num - j)); | |
1998 | res->num = j; | |
1999 | } | |
2000 | } | |
2001 | ||
2002 | ||
f0d0a5d2 MA |
2003 | /* |
2004 | * Noise floor values to use when we have signal strength | |
585141bb | 2005 | * measurements, but no noise floor measurements. These values were |
f0d0a5d2 MA |
2006 | * measured in an office environment with many APs. |
2007 | */ | |
2008 | #define DEFAULT_NOISE_FLOOR_2GHZ (-89) | |
2009 | #define DEFAULT_NOISE_FLOOR_5GHZ (-92) | |
2010 | ||
2f195639 | 2011 | void scan_snr(struct wpa_scan_res *res) |
a1b790eb JM |
2012 | { |
2013 | if (res->flags & WPA_SCAN_NOISE_INVALID) { | |
2014 | res->noise = IS_5GHZ(res->freq) ? | |
2015 | DEFAULT_NOISE_FLOOR_5GHZ : | |
2016 | DEFAULT_NOISE_FLOOR_2GHZ; | |
2017 | } | |
2018 | ||
2019 | if (res->flags & WPA_SCAN_LEVEL_DBM) { | |
2020 | res->snr = res->level - res->noise; | |
2021 | } else { | |
2022 | /* Level is not in dBm, so we can't calculate | |
2023 | * SNR. Just use raw level (units unknown). */ | |
2024 | res->snr = res->level; | |
2025 | } | |
2026 | } | |
2027 | ||
2028 | ||
2029 | static unsigned int max_ht20_rate(int snr) | |
2030 | { | |
2031 | if (snr < 6) | |
2032 | return 6500; /* HT20 MCS0 */ | |
2033 | if (snr < 8) | |
2034 | return 13000; /* HT20 MCS1 */ | |
2035 | if (snr < 13) | |
2036 | return 19500; /* HT20 MCS2 */ | |
2037 | if (snr < 17) | |
2038 | return 26000; /* HT20 MCS3 */ | |
2039 | if (snr < 20) | |
2040 | return 39000; /* HT20 MCS4 */ | |
2041 | if (snr < 23) | |
2042 | return 52000; /* HT20 MCS5 */ | |
2043 | if (snr < 24) | |
2044 | return 58500; /* HT20 MCS6 */ | |
2045 | return 65000; /* HT20 MCS7 */ | |
2046 | } | |
2047 | ||
2048 | ||
2049 | static unsigned int max_ht40_rate(int snr) | |
2050 | { | |
2051 | if (snr < 3) | |
2052 | return 13500; /* HT40 MCS0 */ | |
2053 | if (snr < 6) | |
2054 | return 27000; /* HT40 MCS1 */ | |
2055 | if (snr < 10) | |
2056 | return 40500; /* HT40 MCS2 */ | |
2057 | if (snr < 15) | |
2058 | return 54000; /* HT40 MCS3 */ | |
2059 | if (snr < 17) | |
2060 | return 81000; /* HT40 MCS4 */ | |
2061 | if (snr < 22) | |
2062 | return 108000; /* HT40 MCS5 */ | |
8b2b718d | 2063 | if (snr < 24) |
a1b790eb JM |
2064 | return 121500; /* HT40 MCS6 */ |
2065 | return 135000; /* HT40 MCS7 */ | |
2066 | } | |
2067 | ||
2068 | ||
2069 | static unsigned int max_vht80_rate(int snr) | |
2070 | { | |
2071 | if (snr < 1) | |
2072 | return 0; | |
2073 | if (snr < 2) | |
2074 | return 29300; /* VHT80 MCS0 */ | |
2075 | if (snr < 5) | |
2076 | return 58500; /* VHT80 MCS1 */ | |
2077 | if (snr < 9) | |
2078 | return 87800; /* VHT80 MCS2 */ | |
2079 | if (snr < 11) | |
2080 | return 117000; /* VHT80 MCS3 */ | |
2081 | if (snr < 15) | |
2082 | return 175500; /* VHT80 MCS4 */ | |
2083 | if (snr < 16) | |
2084 | return 234000; /* VHT80 MCS5 */ | |
2085 | if (snr < 18) | |
2086 | return 263300; /* VHT80 MCS6 */ | |
2087 | if (snr < 20) | |
2088 | return 292500; /* VHT80 MCS7 */ | |
2089 | if (snr < 22) | |
2090 | return 351000; /* VHT80 MCS8 */ | |
2091 | return 390000; /* VHT80 MCS9 */ | |
2092 | } | |
2093 | ||
2094 | ||
2f195639 KV |
2095 | void scan_est_throughput(struct wpa_supplicant *wpa_s, |
2096 | struct wpa_scan_res *res) | |
a1b790eb JM |
2097 | { |
2098 | enum local_hw_capab capab = wpa_s->hw_capab; | |
2099 | int rate; /* max legacy rate in 500 kb/s units */ | |
2100 | const u8 *ie; | |
2101 | unsigned int est, tmp; | |
2102 | int snr = res->snr; | |
2103 | ||
2104 | if (res->est_throughput) | |
2105 | return; | |
2106 | ||
2107 | /* Get maximum legacy rate */ | |
2108 | rate = wpa_scan_get_max_rate(res); | |
2109 | ||
2110 | /* Limit based on estimated SNR */ | |
2111 | if (rate > 1 * 2 && snr < 1) | |
2112 | rate = 1 * 2; | |
2113 | else if (rate > 2 * 2 && snr < 4) | |
2114 | rate = 2 * 2; | |
2115 | else if (rate > 6 * 2 && snr < 5) | |
2116 | rate = 6 * 2; | |
2117 | else if (rate > 9 * 2 && snr < 6) | |
2118 | rate = 9 * 2; | |
2119 | else if (rate > 12 * 2 && snr < 7) | |
2120 | rate = 12 * 2; | |
2121 | else if (rate > 18 * 2 && snr < 10) | |
2122 | rate = 18 * 2; | |
2123 | else if (rate > 24 * 2 && snr < 11) | |
2124 | rate = 24 * 2; | |
2125 | else if (rate > 36 * 2 && snr < 15) | |
2126 | rate = 36 * 2; | |
2127 | else if (rate > 48 * 2 && snr < 19) | |
2128 | rate = 48 * 2; | |
2129 | else if (rate > 54 * 2 && snr < 21) | |
2130 | rate = 54 * 2; | |
2131 | est = rate * 500; | |
2132 | ||
2133 | if (capab == CAPAB_HT || capab == CAPAB_HT40 || capab == CAPAB_VHT) { | |
2134 | ie = wpa_scan_get_ie(res, WLAN_EID_HT_CAP); | |
2135 | if (ie) { | |
2136 | tmp = max_ht20_rate(snr); | |
2137 | if (tmp > est) | |
2138 | est = tmp; | |
2139 | } | |
2140 | } | |
2141 | ||
2142 | if (capab == CAPAB_HT40 || capab == CAPAB_VHT) { | |
2143 | ie = wpa_scan_get_ie(res, WLAN_EID_HT_OPERATION); | |
2144 | if (ie && ie[1] >= 2 && | |
2145 | (ie[3] & HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK)) { | |
2146 | tmp = max_ht40_rate(snr); | |
2147 | if (tmp > est) | |
2148 | est = tmp; | |
2149 | } | |
2150 | } | |
2151 | ||
2152 | if (capab == CAPAB_VHT) { | |
2153 | /* Use +1 to assume VHT is always faster than HT */ | |
2154 | ie = wpa_scan_get_ie(res, WLAN_EID_VHT_CAP); | |
2155 | if (ie) { | |
2156 | tmp = max_ht20_rate(snr) + 1; | |
2157 | if (tmp > est) | |
2158 | est = tmp; | |
2159 | ||
2160 | ie = wpa_scan_get_ie(res, WLAN_EID_HT_OPERATION); | |
2161 | if (ie && ie[1] >= 2 && | |
2162 | (ie[3] & | |
2163 | HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK)) { | |
2164 | tmp = max_ht40_rate(snr) + 1; | |
2165 | if (tmp > est) | |
2166 | est = tmp; | |
2167 | } | |
2168 | ||
2169 | ie = wpa_scan_get_ie(res, WLAN_EID_VHT_OPERATION); | |
2170 | if (ie && ie[1] >= 1 && | |
2171 | (ie[2] & VHT_OPMODE_CHANNEL_WIDTH_MASK)) { | |
2172 | tmp = max_vht80_rate(snr) + 1; | |
2173 | if (tmp > est) | |
2174 | est = tmp; | |
2175 | } | |
2176 | } | |
2177 | } | |
2178 | ||
2179 | /* TODO: channel utilization and AP load (e.g., from AP Beacon) */ | |
2180 | ||
2181 | res->est_throughput = est; | |
2182 | } | |
2183 | ||
2184 | ||
9ba9fa07 JM |
2185 | /** |
2186 | * wpa_supplicant_get_scan_results - Get scan results | |
2187 | * @wpa_s: Pointer to wpa_supplicant data | |
2188 | * @info: Information about what was scanned or %NULL if not available | |
2189 | * @new_scan: Whether a new scan was performed | |
2190 | * Returns: Scan results, %NULL on failure | |
2191 | * | |
2192 | * This function request the current scan results from the driver and updates | |
2193 | * the local BSS list wpa_s->bss. The caller is responsible for freeing the | |
2194 | * results with wpa_scan_results_free(). | |
2195 | */ | |
2196 | struct wpa_scan_results * | |
2197 | wpa_supplicant_get_scan_results(struct wpa_supplicant *wpa_s, | |
2198 | struct scan_info *info, int new_scan) | |
2199 | { | |
2200 | struct wpa_scan_results *scan_res; | |
2201 | size_t i; | |
41e650ae | 2202 | int (*compar)(const void *, const void *) = wpa_scan_result_compar; |
9ba9fa07 | 2203 | |
17fbb751 | 2204 | scan_res = wpa_drv_get_scan_results2(wpa_s); |
9ba9fa07 | 2205 | if (scan_res == NULL) { |
f049052b | 2206 | wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results"); |
9ba9fa07 JM |
2207 | return NULL; |
2208 | } | |
c5f10e80 JM |
2209 | if (scan_res->fetch_time.sec == 0) { |
2210 | /* | |
2211 | * Make sure we have a valid timestamp if the driver wrapper | |
2212 | * does not set this. | |
2213 | */ | |
acb69cec | 2214 | os_get_reltime(&scan_res->fetch_time); |
c5f10e80 | 2215 | } |
d445a5cd | 2216 | filter_scan_res(wpa_s, scan_res); |
9ba9fa07 | 2217 | |
f0d0a5d2 MA |
2218 | for (i = 0; i < scan_res->num; i++) { |
2219 | struct wpa_scan_res *scan_res_item = scan_res->res[i]; | |
2220 | ||
a1b790eb JM |
2221 | scan_snr(scan_res_item); |
2222 | scan_est_throughput(wpa_s, scan_res_item); | |
f0d0a5d2 MA |
2223 | } |
2224 | ||
41e650ae | 2225 | #ifdef CONFIG_WPS |
3187fd90 | 2226 | if (wpas_wps_searching(wpa_s)) { |
f049052b BG |
2227 | wpa_dbg(wpa_s, MSG_DEBUG, "WPS: Order scan results with WPS " |
2228 | "provisioning rules"); | |
41e650ae JM |
2229 | compar = wpa_scan_result_wps_compar; |
2230 | } | |
2231 | #endif /* CONFIG_WPS */ | |
2232 | ||
33111c91 JC |
2233 | if (scan_res->res) { |
2234 | qsort(scan_res->res, scan_res->num, | |
2235 | sizeof(struct wpa_scan_res *), compar); | |
2236 | } | |
aa820e02 | 2237 | dump_scan_res(scan_res); |
9ba9fa07 | 2238 | |
6e374bd4 JM |
2239 | if (wpa_s->ignore_post_flush_scan_res) { |
2240 | /* FLUSH command aborted an ongoing scan and these are the | |
2241 | * results from the aborted scan. Do not process the results to | |
2242 | * maintain flushed state. */ | |
2243 | wpa_dbg(wpa_s, MSG_DEBUG, | |
2244 | "Do not update BSS table based on pending post-FLUSH scan results"); | |
2245 | wpa_s->ignore_post_flush_scan_res = 0; | |
2246 | return scan_res; | |
2247 | } | |
2248 | ||
9ba9fa07 JM |
2249 | wpa_bss_update_start(wpa_s); |
2250 | for (i = 0; i < scan_res->num; i++) | |
c5f10e80 JM |
2251 | wpa_bss_update_scan_res(wpa_s, scan_res->res[i], |
2252 | &scan_res->fetch_time); | |
9ba9fa07 JM |
2253 | wpa_bss_update_end(wpa_s, info, new_scan); |
2254 | ||
2255 | return scan_res; | |
2256 | } | |
2257 | ||
2258 | ||
2c09af30 JM |
2259 | /** |
2260 | * wpa_supplicant_update_scan_results - Update scan results from the driver | |
2261 | * @wpa_s: Pointer to wpa_supplicant data | |
2262 | * Returns: 0 on success, -1 on failure | |
2263 | * | |
2264 | * This function updates the BSS table within wpa_supplicant based on the | |
2265 | * currently available scan results from the driver without requesting a new | |
2266 | * scan. This is used in cases where the driver indicates an association | |
2267 | * (including roaming within ESS) and wpa_supplicant does not yet have the | |
2268 | * needed information to complete the connection (e.g., to perform validation | |
2269 | * steps in 4-way handshake). | |
2270 | */ | |
9ba9fa07 JM |
2271 | int wpa_supplicant_update_scan_results(struct wpa_supplicant *wpa_s) |
2272 | { | |
2273 | struct wpa_scan_results *scan_res; | |
2274 | scan_res = wpa_supplicant_get_scan_results(wpa_s, NULL, 0); | |
2275 | if (scan_res == NULL) | |
2276 | return -1; | |
2277 | wpa_scan_results_free(scan_res); | |
2278 | ||
2279 | return 0; | |
2280 | } | |
66fe0f70 DS |
2281 | |
2282 | ||
2283 | /** | |
2284 | * scan_only_handler - Reports scan results | |
2285 | */ | |
2286 | void scan_only_handler(struct wpa_supplicant *wpa_s, | |
2287 | struct wpa_scan_results *scan_res) | |
2288 | { | |
2289 | wpa_dbg(wpa_s, MSG_DEBUG, "Scan-only results received"); | |
d81c73be JM |
2290 | if (wpa_s->last_scan_req == MANUAL_SCAN_REQ && |
2291 | wpa_s->manual_scan_use_id && wpa_s->own_scan_running) { | |
2292 | wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS "id=%u", | |
2293 | wpa_s->manual_scan_id); | |
2294 | wpa_s->manual_scan_use_id = 0; | |
2295 | } else { | |
2296 | wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS); | |
2297 | } | |
66fe0f70 DS |
2298 | wpas_notify_scan_results(wpa_s); |
2299 | wpas_notify_scan_done(wpa_s, 1); | |
d12a51b5 JM |
2300 | if (wpa_s->scan_work) { |
2301 | struct wpa_radio_work *work = wpa_s->scan_work; | |
2302 | wpa_s->scan_work = NULL; | |
2303 | radio_work_done(work); | |
2304 | } | |
ea6030c7 JM |
2305 | |
2306 | if (wpa_s->wpa_state == WPA_SCANNING) | |
2307 | wpa_supplicant_set_state(wpa_s, wpa_s->scan_prev_wpa_state); | |
66fe0f70 | 2308 | } |
407be00b JM |
2309 | |
2310 | ||
2311 | int wpas_scan_scheduled(struct wpa_supplicant *wpa_s) | |
2312 | { | |
2313 | return eloop_is_timeout_registered(wpa_supplicant_scan, wpa_s, NULL); | |
2314 | } | |
dd43aaa5 JM |
2315 | |
2316 | ||
2317 | struct wpa_driver_scan_params * | |
2318 | wpa_scan_clone_params(const struct wpa_driver_scan_params *src) | |
2319 | { | |
2320 | struct wpa_driver_scan_params *params; | |
2321 | size_t i; | |
2322 | u8 *n; | |
2323 | ||
2324 | params = os_zalloc(sizeof(*params)); | |
2325 | if (params == NULL) | |
2326 | return NULL; | |
2327 | ||
2328 | for (i = 0; i < src->num_ssids; i++) { | |
2329 | if (src->ssids[i].ssid) { | |
2330 | n = os_malloc(src->ssids[i].ssid_len); | |
2331 | if (n == NULL) | |
2332 | goto failed; | |
2333 | os_memcpy(n, src->ssids[i].ssid, | |
2334 | src->ssids[i].ssid_len); | |
2335 | params->ssids[i].ssid = n; | |
2336 | params->ssids[i].ssid_len = src->ssids[i].ssid_len; | |
2337 | } | |
2338 | } | |
2339 | params->num_ssids = src->num_ssids; | |
2340 | ||
2341 | if (src->extra_ies) { | |
2342 | n = os_malloc(src->extra_ies_len); | |
2343 | if (n == NULL) | |
2344 | goto failed; | |
2345 | os_memcpy(n, src->extra_ies, src->extra_ies_len); | |
2346 | params->extra_ies = n; | |
2347 | params->extra_ies_len = src->extra_ies_len; | |
2348 | } | |
2349 | ||
2350 | if (src->freqs) { | |
2351 | int len = int_array_len(src->freqs); | |
2352 | params->freqs = os_malloc((len + 1) * sizeof(int)); | |
2353 | if (params->freqs == NULL) | |
2354 | goto failed; | |
2355 | os_memcpy(params->freqs, src->freqs, (len + 1) * sizeof(int)); | |
2356 | } | |
2357 | ||
2358 | if (src->filter_ssids) { | |
fd67275b | 2359 | params->filter_ssids = os_malloc(sizeof(*params->filter_ssids) * |
dd43aaa5 JM |
2360 | src->num_filter_ssids); |
2361 | if (params->filter_ssids == NULL) | |
2362 | goto failed; | |
2363 | os_memcpy(params->filter_ssids, src->filter_ssids, | |
fd67275b EL |
2364 | sizeof(*params->filter_ssids) * |
2365 | src->num_filter_ssids); | |
dd43aaa5 JM |
2366 | params->num_filter_ssids = src->num_filter_ssids; |
2367 | } | |
2368 | ||
2369 | params->filter_rssi = src->filter_rssi; | |
2370 | params->p2p_probe = src->p2p_probe; | |
2371 | params->only_new_results = src->only_new_results; | |
57a8f8af | 2372 | params->low_priority = src->low_priority; |
c16b9f8d AS |
2373 | params->duration = src->duration; |
2374 | params->duration_mandatory = src->duration_mandatory; | |
dd43aaa5 | 2375 | |
09ea4309 AS |
2376 | if (src->sched_scan_plans_num > 0) { |
2377 | params->sched_scan_plans = | |
2378 | os_malloc(sizeof(*src->sched_scan_plans) * | |
2379 | src->sched_scan_plans_num); | |
2380 | if (!params->sched_scan_plans) | |
2381 | goto failed; | |
2382 | ||
2383 | os_memcpy(params->sched_scan_plans, src->sched_scan_plans, | |
2384 | sizeof(*src->sched_scan_plans) * | |
2385 | src->sched_scan_plans_num); | |
2386 | params->sched_scan_plans_num = src->sched_scan_plans_num; | |
2387 | } | |
2388 | ||
56c76fa5 IP |
2389 | if (src->mac_addr_rand) { |
2390 | params->mac_addr_rand = src->mac_addr_rand; | |
2391 | ||
2392 | if (src->mac_addr && src->mac_addr_mask) { | |
2393 | u8 *mac_addr; | |
2394 | ||
2395 | mac_addr = os_malloc(2 * ETH_ALEN); | |
2396 | if (!mac_addr) | |
2397 | goto failed; | |
2398 | ||
2399 | os_memcpy(mac_addr, src->mac_addr, ETH_ALEN); | |
2400 | os_memcpy(mac_addr + ETH_ALEN, src->mac_addr_mask, | |
2401 | ETH_ALEN); | |
2402 | params->mac_addr = mac_addr; | |
2403 | params->mac_addr_mask = mac_addr + ETH_ALEN; | |
2404 | } | |
2405 | } | |
eb20cea5 JM |
2406 | |
2407 | if (src->bssid) { | |
2408 | u8 *bssid; | |
2409 | ||
2410 | bssid = os_malloc(ETH_ALEN); | |
2411 | if (!bssid) | |
2412 | goto failed; | |
2413 | os_memcpy(bssid, src->bssid, ETH_ALEN); | |
2414 | params->bssid = bssid; | |
2415 | } | |
2416 | ||
57c3a605 | 2417 | params->relative_rssi_set = src->relative_rssi_set; |
2418 | params->relative_rssi = src->relative_rssi; | |
2419 | params->relative_adjust_band = src->relative_adjust_band; | |
2420 | params->relative_adjust_rssi = src->relative_adjust_rssi; | |
dd43aaa5 JM |
2421 | return params; |
2422 | ||
2423 | failed: | |
2424 | wpa_scan_free_params(params); | |
2425 | return NULL; | |
2426 | } | |
2427 | ||
2428 | ||
2429 | void wpa_scan_free_params(struct wpa_driver_scan_params *params) | |
2430 | { | |
2431 | size_t i; | |
2432 | ||
2433 | if (params == NULL) | |
2434 | return; | |
2435 | ||
2436 | for (i = 0; i < params->num_ssids; i++) | |
2437 | os_free((u8 *) params->ssids[i].ssid); | |
2438 | os_free((u8 *) params->extra_ies); | |
2439 | os_free(params->freqs); | |
2440 | os_free(params->filter_ssids); | |
09ea4309 | 2441 | os_free(params->sched_scan_plans); |
56c76fa5 IP |
2442 | |
2443 | /* | |
2444 | * Note: params->mac_addr_mask points to same memory allocation and | |
2445 | * must not be freed separately. | |
2446 | */ | |
2447 | os_free((u8 *) params->mac_addr); | |
2448 | ||
eb20cea5 JM |
2449 | os_free((u8 *) params->bssid); |
2450 | ||
dd43aaa5 JM |
2451 | os_free(params); |
2452 | } | |
737e7a08 AB |
2453 | |
2454 | ||
2455 | int wpas_start_pno(struct wpa_supplicant *wpa_s) | |
2456 | { | |
32c02261 | 2457 | int ret, prio; |
4ed34922 | 2458 | size_t i, num_ssid, num_match_ssid; |
737e7a08 AB |
2459 | struct wpa_ssid *ssid; |
2460 | struct wpa_driver_scan_params params; | |
32c02261 | 2461 | struct sched_scan_plan scan_plan; |
f89c32e6 | 2462 | unsigned int max_sched_scan_ssids; |
737e7a08 | 2463 | |
5e3ddf4d AB |
2464 | if (!wpa_s->sched_scan_supported) |
2465 | return -1; | |
2466 | ||
f89c32e6 DS |
2467 | if (wpa_s->max_sched_scan_ssids > WPAS_MAX_SCAN_SSIDS) |
2468 | max_sched_scan_ssids = WPAS_MAX_SCAN_SSIDS; | |
2469 | else | |
2470 | max_sched_scan_ssids = wpa_s->max_sched_scan_ssids; | |
2471 | if (max_sched_scan_ssids < 1) | |
2472 | return -1; | |
2473 | ||
737e7a08 AB |
2474 | if (wpa_s->pno || wpa_s->pno_sched_pending) |
2475 | return 0; | |
2476 | ||
2477 | if ((wpa_s->wpa_state > WPA_SCANNING) && | |
b4fd1f0e | 2478 | (wpa_s->wpa_state < WPA_COMPLETED)) { |
737e7a08 AB |
2479 | wpa_printf(MSG_ERROR, "PNO: In assoc process"); |
2480 | return -EAGAIN; | |
2481 | } | |
2482 | ||
2483 | if (wpa_s->wpa_state == WPA_SCANNING) { | |
2484 | wpa_supplicant_cancel_scan(wpa_s); | |
2485 | if (wpa_s->sched_scanning) { | |
2486 | wpa_printf(MSG_DEBUG, "Schedule PNO on completion of " | |
2487 | "ongoing sched scan"); | |
2488 | wpa_supplicant_cancel_sched_scan(wpa_s); | |
2489 | wpa_s->pno_sched_pending = 1; | |
2490 | return 0; | |
2491 | } | |
2492 | } | |
2493 | ||
5ac8f862 AS |
2494 | if (wpa_s->sched_scan_stop_req) { |
2495 | wpa_printf(MSG_DEBUG, | |
2496 | "Schedule PNO after previous sched scan has stopped"); | |
2497 | wpa_s->pno_sched_pending = 1; | |
2498 | return 0; | |
2499 | } | |
2500 | ||
737e7a08 AB |
2501 | os_memset(¶ms, 0, sizeof(params)); |
2502 | ||
4ed34922 | 2503 | num_ssid = num_match_ssid = 0; |
737e7a08 AB |
2504 | ssid = wpa_s->conf->ssid; |
2505 | while (ssid) { | |
4ed34922 DS |
2506 | if (!wpas_network_disabled(wpa_s, ssid)) { |
2507 | num_match_ssid++; | |
2508 | if (ssid->scan_ssid) | |
2509 | num_ssid++; | |
2510 | } | |
737e7a08 AB |
2511 | ssid = ssid->next; |
2512 | } | |
4ed34922 DS |
2513 | |
2514 | if (num_match_ssid == 0) { | |
2515 | wpa_printf(MSG_DEBUG, "PNO: No configured SSIDs"); | |
2516 | return -1; | |
2517 | } | |
2518 | ||
2519 | if (num_match_ssid > num_ssid) { | |
2520 | params.num_ssids++; /* wildcard */ | |
2521 | num_ssid++; | |
2522 | } | |
2523 | ||
f89c32e6 | 2524 | if (num_ssid > max_sched_scan_ssids) { |
737e7a08 | 2525 | wpa_printf(MSG_DEBUG, "PNO: Use only the first %u SSIDs from " |
f89c32e6 DS |
2526 | "%u", max_sched_scan_ssids, (unsigned int) num_ssid); |
2527 | num_ssid = max_sched_scan_ssids; | |
737e7a08 AB |
2528 | } |
2529 | ||
4ed34922 DS |
2530 | if (num_match_ssid > wpa_s->max_match_sets) { |
2531 | num_match_ssid = wpa_s->max_match_sets; | |
2532 | wpa_dbg(wpa_s, MSG_DEBUG, "PNO: Too many SSIDs to match"); | |
737e7a08 | 2533 | } |
4ed34922 DS |
2534 | params.filter_ssids = os_calloc(num_match_ssid, |
2535 | sizeof(struct wpa_driver_scan_filter)); | |
737e7a08 AB |
2536 | if (params.filter_ssids == NULL) |
2537 | return -1; | |
6f5e1b0b | 2538 | |
737e7a08 | 2539 | i = 0; |
6f5e1b0b DS |
2540 | prio = 0; |
2541 | ssid = wpa_s->conf->pssid[prio]; | |
737e7a08 AB |
2542 | while (ssid) { |
2543 | if (!wpas_network_disabled(wpa_s, ssid)) { | |
4ed34922 DS |
2544 | if (ssid->scan_ssid && params.num_ssids < num_ssid) { |
2545 | params.ssids[params.num_ssids].ssid = | |
2546 | ssid->ssid; | |
2547 | params.ssids[params.num_ssids].ssid_len = | |
2548 | ssid->ssid_len; | |
2549 | params.num_ssids++; | |
2550 | } | |
737e7a08 AB |
2551 | os_memcpy(params.filter_ssids[i].ssid, ssid->ssid, |
2552 | ssid->ssid_len); | |
2553 | params.filter_ssids[i].ssid_len = ssid->ssid_len; | |
2554 | params.num_filter_ssids++; | |
2555 | i++; | |
4ed34922 | 2556 | if (i == num_match_ssid) |
737e7a08 AB |
2557 | break; |
2558 | } | |
6f5e1b0b DS |
2559 | if (ssid->pnext) |
2560 | ssid = ssid->pnext; | |
2561 | else if (prio + 1 == wpa_s->conf->num_prio) | |
2562 | break; | |
2563 | else | |
2564 | ssid = wpa_s->conf->pssid[++prio]; | |
737e7a08 AB |
2565 | } |
2566 | ||
2567 | if (wpa_s->conf->filter_rssi) | |
2568 | params.filter_rssi = wpa_s->conf->filter_rssi; | |
2569 | ||
32c02261 AS |
2570 | if (wpa_s->sched_scan_plans_num) { |
2571 | params.sched_scan_plans = wpa_s->sched_scan_plans; | |
2572 | params.sched_scan_plans_num = wpa_s->sched_scan_plans_num; | |
2573 | } else { | |
2574 | /* Set one scan plan that will run infinitely */ | |
2575 | if (wpa_s->conf->sched_scan_interval) | |
2576 | scan_plan.interval = wpa_s->conf->sched_scan_interval; | |
2577 | else | |
2578 | scan_plan.interval = 10; | |
2579 | ||
2580 | scan_plan.iterations = 0; | |
2581 | params.sched_scan_plans = &scan_plan; | |
2582 | params.sched_scan_plans_num = 1; | |
2583 | } | |
737e7a08 | 2584 | |
d3c9c35f DS |
2585 | if (params.freqs == NULL && wpa_s->manual_sched_scan_freqs) { |
2586 | wpa_dbg(wpa_s, MSG_DEBUG, "Limit sched scan to specified channels"); | |
2587 | params.freqs = wpa_s->manual_sched_scan_freqs; | |
2588 | } | |
2589 | ||
346b333d SD |
2590 | if ((wpa_s->mac_addr_rand_enable & MAC_ADDR_RAND_PNO) && |
2591 | wpa_s->wpa_state <= WPA_SCANNING) { | |
56c76fa5 IP |
2592 | params.mac_addr_rand = 1; |
2593 | if (wpa_s->mac_addr_pno) { | |
2594 | params.mac_addr = wpa_s->mac_addr_pno; | |
2595 | params.mac_addr_mask = wpa_s->mac_addr_pno + ETH_ALEN; | |
2596 | } | |
2597 | } | |
2598 | ||
57c3a605 | 2599 | wpa_scan_set_relative_rssi_params(wpa_s, ¶ms); |
2600 | ||
32c02261 | 2601 | ret = wpa_supplicant_start_sched_scan(wpa_s, ¶ms); |
737e7a08 AB |
2602 | os_free(params.filter_ssids); |
2603 | if (ret == 0) | |
2604 | wpa_s->pno = 1; | |
5e3ddf4d AB |
2605 | else |
2606 | wpa_msg(wpa_s, MSG_ERROR, "Failed to schedule PNO"); | |
737e7a08 AB |
2607 | return ret; |
2608 | } | |
2609 | ||
2610 | ||
2611 | int wpas_stop_pno(struct wpa_supplicant *wpa_s) | |
2612 | { | |
2613 | int ret = 0; | |
2614 | ||
5e3ddf4d AB |
2615 | if (!wpa_s->pno) |
2616 | return 0; | |
2617 | ||
2618 | ret = wpa_supplicant_stop_sched_scan(wpa_s); | |
14f34a73 | 2619 | wpa_s->sched_scan_stop_req = 1; |
737e7a08 | 2620 | |
5e3ddf4d | 2621 | wpa_s->pno = 0; |
737e7a08 AB |
2622 | wpa_s->pno_sched_pending = 0; |
2623 | ||
2624 | if (wpa_s->wpa_state == WPA_SCANNING) | |
2625 | wpa_supplicant_req_scan(wpa_s, 0, 0); | |
2626 | ||
2627 | return ret; | |
2628 | } | |
56c76fa5 IP |
2629 | |
2630 | ||
2631 | void wpas_mac_addr_rand_scan_clear(struct wpa_supplicant *wpa_s, | |
2632 | unsigned int type) | |
2633 | { | |
2634 | type &= MAC_ADDR_RAND_ALL; | |
2635 | wpa_s->mac_addr_rand_enable &= ~type; | |
2636 | ||
2637 | if (type & MAC_ADDR_RAND_SCAN) { | |
2638 | os_free(wpa_s->mac_addr_scan); | |
2639 | wpa_s->mac_addr_scan = NULL; | |
2640 | } | |
2641 | ||
2642 | if (type & MAC_ADDR_RAND_SCHED_SCAN) { | |
2643 | os_free(wpa_s->mac_addr_sched_scan); | |
2644 | wpa_s->mac_addr_sched_scan = NULL; | |
2645 | } | |
2646 | ||
2647 | if (type & MAC_ADDR_RAND_PNO) { | |
2648 | os_free(wpa_s->mac_addr_pno); | |
2649 | wpa_s->mac_addr_pno = NULL; | |
2650 | } | |
2651 | } | |
2652 | ||
2653 | ||
2654 | int wpas_mac_addr_rand_scan_set(struct wpa_supplicant *wpa_s, | |
2655 | unsigned int type, const u8 *addr, | |
2656 | const u8 *mask) | |
2657 | { | |
2658 | u8 *tmp = NULL; | |
2659 | ||
2660 | wpas_mac_addr_rand_scan_clear(wpa_s, type); | |
2661 | ||
2662 | if (addr) { | |
2663 | tmp = os_malloc(2 * ETH_ALEN); | |
2664 | if (!tmp) | |
2665 | return -1; | |
2666 | os_memcpy(tmp, addr, ETH_ALEN); | |
2667 | os_memcpy(tmp + ETH_ALEN, mask, ETH_ALEN); | |
2668 | } | |
2669 | ||
2670 | if (type == MAC_ADDR_RAND_SCAN) { | |
2671 | wpa_s->mac_addr_scan = tmp; | |
2672 | } else if (type == MAC_ADDR_RAND_SCHED_SCAN) { | |
2673 | wpa_s->mac_addr_sched_scan = tmp; | |
2674 | } else if (type == MAC_ADDR_RAND_PNO) { | |
2675 | wpa_s->mac_addr_pno = tmp; | |
2676 | } else { | |
2677 | wpa_printf(MSG_INFO, | |
2678 | "scan: Invalid MAC randomization type=0x%x", | |
2679 | type); | |
2680 | os_free(tmp); | |
2681 | return -1; | |
2682 | } | |
2683 | ||
2684 | wpa_s->mac_addr_rand_enable |= type; | |
2685 | return 0; | |
2686 | } | |
4ead7cfd KV |
2687 | |
2688 | ||
2689 | int wpas_abort_ongoing_scan(struct wpa_supplicant *wpa_s) | |
2690 | { | |
bf88401d SD |
2691 | struct wpa_radio_work *work; |
2692 | struct wpa_radio *radio = wpa_s->radio; | |
a8057310 | 2693 | |
bf88401d SD |
2694 | dl_list_for_each(work, &radio->work, struct wpa_radio_work, list) { |
2695 | if (work->wpa_s != wpa_s || !work->started || | |
2696 | (os_strcmp(work->type, "scan") != 0 && | |
2697 | os_strcmp(work->type, "p2p-scan") != 0)) | |
2698 | continue; | |
4ead7cfd | 2699 | wpa_dbg(wpa_s, MSG_DEBUG, "Abort an ongoing scan"); |
bf88401d | 2700 | return wpa_drv_abort_scan(wpa_s, wpa_s->curr_scan_cookie); |
4ead7cfd KV |
2701 | } |
2702 | ||
bf88401d SD |
2703 | wpa_dbg(wpa_s, MSG_DEBUG, "No ongoing scan/p2p-scan found to abort"); |
2704 | return -1; | |
4ead7cfd | 2705 | } |
32c02261 AS |
2706 | |
2707 | ||
2708 | int wpas_sched_scan_plans_set(struct wpa_supplicant *wpa_s, const char *cmd) | |
2709 | { | |
2710 | struct sched_scan_plan *scan_plans = NULL; | |
2711 | const char *token, *context = NULL; | |
2712 | unsigned int num = 0; | |
2713 | ||
2714 | if (!cmd) | |
2715 | return -1; | |
2716 | ||
bea48f77 JM |
2717 | if (!cmd[0]) { |
2718 | wpa_printf(MSG_DEBUG, "Clear sched scan plans"); | |
2719 | os_free(wpa_s->sched_scan_plans); | |
2720 | wpa_s->sched_scan_plans = NULL; | |
2721 | wpa_s->sched_scan_plans_num = 0; | |
2722 | return 0; | |
2723 | } | |
2724 | ||
32c02261 AS |
2725 | while ((token = cstr_token(cmd, " ", &context))) { |
2726 | int ret; | |
2727 | struct sched_scan_plan *scan_plan, *n; | |
2728 | ||
2729 | n = os_realloc_array(scan_plans, num + 1, sizeof(*scan_plans)); | |
2730 | if (!n) | |
2731 | goto fail; | |
2732 | ||
2733 | scan_plans = n; | |
2734 | scan_plan = &scan_plans[num]; | |
2735 | num++; | |
2736 | ||
2737 | ret = sscanf(token, "%u:%u", &scan_plan->interval, | |
2738 | &scan_plan->iterations); | |
2739 | if (ret <= 0 || ret > 2 || !scan_plan->interval) { | |
2740 | wpa_printf(MSG_ERROR, | |
2741 | "Invalid sched scan plan input: %s", token); | |
2742 | goto fail; | |
2743 | } | |
2744 | ||
32c02261 AS |
2745 | if (scan_plan->interval > wpa_s->max_sched_scan_plan_interval) { |
2746 | wpa_printf(MSG_WARNING, | |
2747 | "scan plan %u: Scan interval too long(%u), use the maximum allowed(%u)", | |
2748 | num, scan_plan->interval, | |
2749 | wpa_s->max_sched_scan_plan_interval); | |
2750 | scan_plan->interval = | |
2751 | wpa_s->max_sched_scan_plan_interval; | |
2752 | } | |
2753 | ||
2754 | if (ret == 1) { | |
2755 | scan_plan->iterations = 0; | |
2756 | break; | |
2757 | } | |
2758 | ||
2759 | if (!scan_plan->iterations) { | |
2760 | wpa_printf(MSG_ERROR, | |
2761 | "scan plan %u: Number of iterations cannot be zero", | |
2762 | num); | |
2763 | goto fail; | |
2764 | } | |
2765 | ||
2766 | if (scan_plan->iterations > | |
2767 | wpa_s->max_sched_scan_plan_iterations) { | |
2768 | wpa_printf(MSG_WARNING, | |
2769 | "scan plan %u: Too many iterations(%u), use the maximum allowed(%u)", | |
2770 | num, scan_plan->iterations, | |
2771 | wpa_s->max_sched_scan_plan_iterations); | |
2772 | scan_plan->iterations = | |
2773 | wpa_s->max_sched_scan_plan_iterations; | |
2774 | } | |
2775 | ||
2776 | wpa_printf(MSG_DEBUG, | |
2777 | "scan plan %u: interval=%u iterations=%u", | |
2778 | num, scan_plan->interval, scan_plan->iterations); | |
2779 | } | |
2780 | ||
2781 | if (!scan_plans) { | |
2782 | wpa_printf(MSG_ERROR, "Invalid scan plans entry"); | |
2783 | goto fail; | |
2784 | } | |
2785 | ||
2786 | if (cstr_token(cmd, " ", &context) || scan_plans[num - 1].iterations) { | |
2787 | wpa_printf(MSG_ERROR, | |
2788 | "All scan plans but the last must specify a number of iterations"); | |
2789 | goto fail; | |
2790 | } | |
2791 | ||
2792 | wpa_printf(MSG_DEBUG, "scan plan %u (last plan): interval=%u", | |
2793 | num, scan_plans[num - 1].interval); | |
2794 | ||
2795 | if (num > wpa_s->max_sched_scan_plans) { | |
2796 | wpa_printf(MSG_WARNING, | |
2797 | "Too many scheduled scan plans (only %u supported)", | |
2798 | wpa_s->max_sched_scan_plans); | |
2799 | wpa_printf(MSG_WARNING, | |
2800 | "Use only the first %u scan plans, and the last one (in infinite loop)", | |
2801 | wpa_s->max_sched_scan_plans - 1); | |
2802 | os_memcpy(&scan_plans[wpa_s->max_sched_scan_plans - 1], | |
2803 | &scan_plans[num - 1], sizeof(*scan_plans)); | |
2804 | num = wpa_s->max_sched_scan_plans; | |
2805 | } | |
2806 | ||
2807 | os_free(wpa_s->sched_scan_plans); | |
2808 | wpa_s->sched_scan_plans = scan_plans; | |
2809 | wpa_s->sched_scan_plans_num = num; | |
2810 | ||
2811 | return 0; | |
2812 | ||
2813 | fail: | |
2814 | os_free(scan_plans); | |
2815 | wpa_printf(MSG_ERROR, "invalid scan plans list"); | |
2816 | return -1; | |
2817 | } | |
be7ebd89 MS |
2818 | |
2819 | ||
2820 | /** | |
2821 | * wpas_scan_reset_sched_scan - Reset sched_scan state | |
2822 | * @wpa_s: Pointer to wpa_supplicant data | |
2823 | * | |
2824 | * This function is used to cancel a running scheduled scan and to reset an | |
2825 | * internal scan state to continue with a regular scan on the following | |
2826 | * wpa_supplicant_req_scan() calls. | |
2827 | */ | |
2828 | void wpas_scan_reset_sched_scan(struct wpa_supplicant *wpa_s) | |
2829 | { | |
2830 | wpa_s->normal_scans = 0; | |
2831 | if (wpa_s->sched_scanning) { | |
2832 | wpa_s->sched_scan_timed_out = 0; | |
2833 | wpa_s->prev_sched_ssid = NULL; | |
2834 | wpa_supplicant_cancel_sched_scan(wpa_s); | |
2835 | } | |
2836 | } | |
5bb7327a JM |
2837 | |
2838 | ||
2839 | void wpas_scan_restart_sched_scan(struct wpa_supplicant *wpa_s) | |
2840 | { | |
2841 | /* simulate timeout to restart the sched scan */ | |
2842 | wpa_s->sched_scan_timed_out = 1; | |
2843 | wpa_s->prev_sched_ssid = NULL; | |
2844 | wpa_supplicant_cancel_sched_scan(wpa_s); | |
2845 | } |