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Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001/*
2 * WPA Supplicant - Scanning
Hai Shalom021b0b52019-04-10 11:17:58 -07003 * Copyright (c) 2003-2019, Jouni Malinen <j@w1.fi>
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004 *
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08005 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07007 */
8
9#include "utils/includes.h"
10
11#include "utils/common.h"
12#include "utils/eloop.h"
13#include "common/ieee802_11_defs.h"
Dmitry Shmidt3a787e62013-01-17 10:32:35 -080014#include "common/wpa_ctrl.h"
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070015#include "config.h"
16#include "wpa_supplicant_i.h"
17#include "driver_i.h"
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070018#include "wps_supplicant.h"
19#include "p2p_supplicant.h"
20#include "p2p/p2p.h"
Dmitry Shmidt04949592012-07-19 12:16:46 -070021#include "hs20_supplicant.h"
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070022#include "notify.h"
23#include "bss.h"
24#include "scan.h"
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -080025#include "mesh.h"
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070026
27
28static 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
37 if (wpa_s->current_ssid == NULL) {
38 wpa_s->current_ssid = ssid;
Dmitry Shmidt849734c2016-05-27 09:59:01 -070039 wpas_notify_network_changed(wpa_s);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070040 }
41 wpa_supplicant_initiate_eapol(wpa_s);
42 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated with a configured "
43 "network - generating associated event");
44 os_memset(&data, 0, sizeof(data));
45 wpa_supplicant_event(wpa_s, EVENT_ASSOC, &data);
46}
47
48
49#ifdef CONFIG_WPS
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -080050static int wpas_wps_in_use(struct wpa_supplicant *wpa_s,
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070051 enum wps_request_type *req_type)
52{
53 struct wpa_ssid *ssid;
54 int wps = 0;
55
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -080056 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070057 if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
58 continue;
59
60 wps = 1;
61 *req_type = wpas_wps_get_req_type(ssid);
Dmitry Shmidt849734c2016-05-27 09:59:01 -070062 if (ssid->eap.phase1 && os_strstr(ssid->eap.phase1, "pbc=1"))
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070063 return 2;
64 }
65
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -080066#ifdef CONFIG_P2P
Dmitry Shmidtd5e49232012-12-03 15:08:10 -080067 if (!wpa_s->global->p2p_disabled && wpa_s->global->p2p &&
68 !wpa_s->conf->p2p_disabled) {
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -080069 wpa_s->wps->dev.p2p = 1;
70 if (!wps) {
71 wps = 1;
72 *req_type = WPS_REQ_ENROLLEE_INFO;
73 }
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -080074 }
75#endif /* CONFIG_P2P */
76
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070077 return wps;
78}
79#endif /* CONFIG_WPS */
80
81
Hai Shalomc3565922019-10-28 11:58:20 -070082static int wpa_setup_mac_addr_rand_params(struct wpa_driver_scan_params *params,
83 const u8 *mac_addr)
84{
85 u8 *tmp;
86
87 if (params->mac_addr) {
88 params->mac_addr_mask = NULL;
89 os_free(params->mac_addr);
90 params->mac_addr = NULL;
91 }
92
93 params->mac_addr_rand = 1;
94
95 if (!mac_addr)
96 return 0;
97
98 tmp = os_malloc(2 * ETH_ALEN);
99 if (!tmp)
100 return -1;
101
102 os_memcpy(tmp, mac_addr, 2 * ETH_ALEN);
103 params->mac_addr = tmp;
104 params->mac_addr_mask = tmp + ETH_ALEN;
105 return 0;
106}
107
108
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800109/**
110 * wpa_supplicant_enabled_networks - Check whether there are enabled networks
111 * @wpa_s: Pointer to wpa_supplicant data
112 * Returns: 0 if no networks are enabled, >0 if networks are enabled
113 *
114 * This function is used to figure out whether any networks (or Interworking
115 * with enabled credentials and auto_interworking) are present in the current
116 * configuration.
117 */
Dmitry Shmidt04949592012-07-19 12:16:46 -0700118int wpa_supplicant_enabled_networks(struct wpa_supplicant *wpa_s)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700119{
Dmitry Shmidt04949592012-07-19 12:16:46 -0700120 struct wpa_ssid *ssid = wpa_s->conf->ssid;
Dmitry Shmidtaa532512012-09-24 10:35:31 -0700121 int count = 0, disabled = 0;
Dmitry Shmidt203eadb2015-03-05 14:16:04 -0800122
123 if (wpa_s->p2p_mgmt)
124 return 0; /* no normal network profiles on p2p_mgmt interface */
125
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700126 while (ssid) {
Dmitry Shmidt04949592012-07-19 12:16:46 -0700127 if (!wpas_network_disabled(wpa_s, ssid))
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700128 count++;
Dmitry Shmidtaa532512012-09-24 10:35:31 -0700129 else
130 disabled++;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700131 ssid = ssid->next;
132 }
Dmitry Shmidt61d9df32012-08-29 16:22:06 -0700133 if (wpa_s->conf->cred && wpa_s->conf->interworking &&
134 wpa_s->conf->auto_interworking)
135 count++;
Dmitry Shmidtaa532512012-09-24 10:35:31 -0700136 if (count == 0 && disabled > 0) {
137 wpa_dbg(wpa_s, MSG_DEBUG, "No enabled networks (%d disabled "
138 "networks)", disabled);
139 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700140 return count;
141}
142
143
144static void wpa_supplicant_assoc_try(struct wpa_supplicant *wpa_s,
145 struct wpa_ssid *ssid)
146{
Dmitry Shmidtd2986c22017-10-23 14:22:09 -0700147 int min_temp_disabled = 0;
148
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700149 while (ssid) {
Dmitry Shmidtd2986c22017-10-23 14:22:09 -0700150 if (!wpas_network_disabled(wpa_s, ssid)) {
151 int temp_disabled = wpas_temp_disabled(wpa_s, ssid);
152
153 if (temp_disabled <= 0)
154 break;
155
156 if (!min_temp_disabled ||
157 temp_disabled < min_temp_disabled)
158 min_temp_disabled = temp_disabled;
159 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700160 ssid = ssid->next;
161 }
162
163 /* ap_scan=2 mode - try to associate with each SSID. */
164 if (ssid == NULL) {
165 wpa_dbg(wpa_s, MSG_DEBUG, "wpa_supplicant_assoc_try: Reached "
166 "end of scan list - go back to beginning");
167 wpa_s->prev_scan_ssid = WILDCARD_SSID_SCAN;
Dmitry Shmidtd2986c22017-10-23 14:22:09 -0700168 wpa_supplicant_req_scan(wpa_s, min_temp_disabled, 0);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700169 return;
170 }
171 if (ssid->next) {
172 /* Continue from the next SSID on the next attempt. */
173 wpa_s->prev_scan_ssid = ssid;
174 } else {
175 /* Start from the beginning of the SSID list. */
176 wpa_s->prev_scan_ssid = WILDCARD_SSID_SCAN;
177 }
178 wpa_supplicant_associate(wpa_s, NULL, ssid);
179}
180
181
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800182static void wpas_trigger_scan_cb(struct wpa_radio_work *work, int deinit)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700183{
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800184 struct wpa_supplicant *wpa_s = work->wpa_s;
185 struct wpa_driver_scan_params *params = work->ctx;
186 int ret;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700187
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800188 if (deinit) {
Dmitry Shmidtbd14a572014-02-18 10:33:49 -0800189 if (!work->started) {
190 wpa_scan_free_params(params);
191 return;
192 }
193 wpa_supplicant_notify_scanning(wpa_s, 0);
194 wpas_notify_scan_done(wpa_s, 0);
195 wpa_s->scan_work = NULL;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700196 return;
197 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700198
Hai Shalomc3565922019-10-28 11:58:20 -0700199 if ((wpa_s->mac_addr_rand_enable & MAC_ADDR_RAND_SCAN) &&
200 wpa_s->wpa_state <= WPA_SCANNING)
201 wpa_setup_mac_addr_rand_params(params, wpa_s->mac_addr_scan);
202
Dmitry Shmidt661b4f72014-09-29 14:58:27 -0700203 if (wpas_update_random_addr_disassoc(wpa_s) < 0) {
204 wpa_msg(wpa_s, MSG_INFO,
205 "Failed to assign random MAC address for a scan");
Dmitry Shmidt849734c2016-05-27 09:59:01 -0700206 wpa_scan_free_params(params);
207 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SCAN_FAILED "ret=-1");
Dmitry Shmidt661b4f72014-09-29 14:58:27 -0700208 radio_work_done(work);
209 return;
210 }
211
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800212 wpa_supplicant_notify_scanning(wpa_s, 1);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700213
Dmitry Shmidt2f74e362015-01-21 13:19:05 -0800214 if (wpa_s->clear_driver_scan_cache) {
215 wpa_printf(MSG_DEBUG,
216 "Request driver to clear scan cache due to local BSS flush");
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800217 params->only_new_results = 1;
Dmitry Shmidt2f74e362015-01-21 13:19:05 -0800218 }
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800219 ret = wpa_drv_scan(wpa_s, params);
Dmitry Shmidtabb90a32016-12-05 15:34:39 -0800220 /*
221 * Store the obtained vendor scan cookie (if any) in wpa_s context.
222 * The current design is to allow only one scan request on each
223 * interface, hence having this scan cookie stored in wpa_s context is
224 * fine for now.
225 *
226 * Revisit this logic if concurrent scan operations per interface
227 * is supported.
228 */
229 if (ret == 0)
230 wpa_s->curr_scan_cookie = params->scan_cookie;
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800231 wpa_scan_free_params(params);
232 work->ctx = NULL;
233 if (ret) {
Dmitry Shmidtd2986c22017-10-23 14:22:09 -0700234 int retry = wpa_s->last_scan_req != MANUAL_SCAN_REQ &&
235 !wpa_s->beacon_rep_data.token;
Dmitry Shmidt2f74e362015-01-21 13:19:05 -0800236
237 if (wpa_s->disconnected)
238 retry = 0;
239
Hai Shalom899fcc72020-10-19 14:38:18 -0700240 /* do not retry if operation is not supported */
241 if (ret == -EOPNOTSUPP)
242 retry = 0;
243
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800244 wpa_supplicant_notify_scanning(wpa_s, 0);
245 wpas_notify_scan_done(wpa_s, 0);
Dmitry Shmidt2f74e362015-01-21 13:19:05 -0800246 if (wpa_s->wpa_state == WPA_SCANNING)
247 wpa_supplicant_set_state(wpa_s,
248 wpa_s->scan_prev_wpa_state);
249 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SCAN_FAILED "ret=%d%s",
250 ret, retry ? " retry=1" : "");
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800251 radio_work_done(work);
Dmitry Shmidt2f74e362015-01-21 13:19:05 -0800252
253 if (retry) {
254 /* Restore scan_req since we will try to scan again */
255 wpa_s->scan_req = wpa_s->last_scan_req;
256 wpa_supplicant_req_scan(wpa_s, 1, 0);
Dmitry Shmidtd2986c22017-10-23 14:22:09 -0700257 } else if (wpa_s->scan_res_handler) {
258 /* Clear the scan_res_handler */
259 wpa_s->scan_res_handler = NULL;
Dmitry Shmidt2f74e362015-01-21 13:19:05 -0800260 }
Dmitry Shmidtd2986c22017-10-23 14:22:09 -0700261
262 if (wpa_s->beacon_rep_data.token)
263 wpas_rrm_refuse_request(wpa_s);
264
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700265 return;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700266 }
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800267
268 os_get_reltime(&wpa_s->scan_trigger_time);
269 wpa_s->scan_runs++;
270 wpa_s->normal_scans++;
271 wpa_s->own_scan_requested = 1;
272 wpa_s->clear_driver_scan_cache = 0;
273 wpa_s->scan_work = work;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700274}
275
276
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800277/**
278 * wpa_supplicant_trigger_scan - Request driver to start a scan
279 * @wpa_s: Pointer to wpa_supplicant data
280 * @params: Scan parameters
281 * Returns: 0 on success, -1 on failure
282 */
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700283int wpa_supplicant_trigger_scan(struct wpa_supplicant *wpa_s,
284 struct wpa_driver_scan_params *params)
285{
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800286 struct wpa_driver_scan_params *ctx;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700287
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800288 if (wpa_s->scan_work) {
289 wpa_dbg(wpa_s, MSG_INFO, "Reject scan trigger since one is already pending");
290 return -1;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800291 }
292
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800293 ctx = wpa_scan_clone_params(params);
Dmitry Shmidtd5ab1b52016-06-21 12:38:41 -0700294 if (!ctx ||
295 radio_add_work(wpa_s, 0, "scan", 0, wpas_trigger_scan_cb, ctx) < 0)
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800296 {
297 wpa_scan_free_params(ctx);
Dmitry Shmidt849734c2016-05-27 09:59:01 -0700298 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SCAN_FAILED "ret=-1");
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800299 return -1;
300 }
301
302 return 0;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800303}
304
305
306static void
307wpa_supplicant_delayed_sched_scan_timeout(void *eloop_ctx, void *timeout_ctx)
308{
309 struct wpa_supplicant *wpa_s = eloop_ctx;
310
311 wpa_dbg(wpa_s, MSG_DEBUG, "Starting delayed sched scan");
312
313 if (wpa_supplicant_req_sched_scan(wpa_s))
314 wpa_supplicant_req_scan(wpa_s, 0, 0);
315}
316
317
318static void
319wpa_supplicant_sched_scan_timeout(void *eloop_ctx, void *timeout_ctx)
320{
321 struct wpa_supplicant *wpa_s = eloop_ctx;
322
323 wpa_dbg(wpa_s, MSG_DEBUG, "Sched scan timeout - stopping it");
324
325 wpa_s->sched_scan_timed_out = 1;
326 wpa_supplicant_cancel_sched_scan(wpa_s);
327}
328
329
Dmitry Shmidt849734c2016-05-27 09:59:01 -0700330static int
331wpa_supplicant_start_sched_scan(struct wpa_supplicant *wpa_s,
332 struct wpa_driver_scan_params *params)
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800333{
334 int ret;
Dmitry Shmidtb7b4d0e2013-08-26 12:09:05 -0700335
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800336 wpa_supplicant_notify_scanning(wpa_s, 1);
Dmitry Shmidtd7ff03d2015-12-04 14:49:35 -0800337 ret = wpa_drv_sched_scan(wpa_s, params);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800338 if (ret)
339 wpa_supplicant_notify_scanning(wpa_s, 0);
Dmitry Shmidtb96dad42013-11-05 10:07:29 -0800340 else
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800341 wpa_s->sched_scanning = 1;
342
343 return ret;
344}
345
346
Dmitry Shmidt849734c2016-05-27 09:59:01 -0700347static int wpa_supplicant_stop_sched_scan(struct wpa_supplicant *wpa_s)
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800348{
349 int ret;
350
351 ret = wpa_drv_stop_sched_scan(wpa_s);
352 if (ret) {
353 wpa_dbg(wpa_s, MSG_DEBUG, "stopping sched_scan failed!");
354 /* TODO: what to do if stopping fails? */
355 return -1;
356 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700357
358 return ret;
359}
360
361
362static struct wpa_driver_scan_filter *
363wpa_supplicant_build_filter_ssids(struct wpa_config *conf, size_t *num_ssids)
364{
365 struct wpa_driver_scan_filter *ssids;
366 struct wpa_ssid *ssid;
367 size_t count;
368
369 *num_ssids = 0;
370 if (!conf->filter_ssids)
371 return NULL;
372
373 for (count = 0, ssid = conf->ssid; ssid; ssid = ssid->next) {
374 if (ssid->ssid && ssid->ssid_len)
375 count++;
376 }
377 if (count == 0)
378 return NULL;
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800379 ssids = os_calloc(count, sizeof(struct wpa_driver_scan_filter));
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700380 if (ssids == NULL)
381 return NULL;
382
383 for (ssid = conf->ssid; ssid; ssid = ssid->next) {
384 if (!ssid->ssid || !ssid->ssid_len)
385 continue;
386 os_memcpy(ssids[*num_ssids].ssid, ssid->ssid, ssid->ssid_len);
387 ssids[*num_ssids].ssid_len = ssid->ssid_len;
388 (*num_ssids)++;
389 }
390
391 return ssids;
392}
393
394
Hai Shaloma20dcd72022-02-04 13:43:00 -0800395#ifdef CONFIG_P2P
396static bool is_6ghz_supported(struct wpa_supplicant *wpa_s)
397{
398 struct hostapd_channel_data *chnl;
399 int i, j;
400
401 for (i = 0; i < wpa_s->hw.num_modes; i++) {
402 if (wpa_s->hw.modes[i].mode == HOSTAPD_MODE_IEEE80211A) {
403 chnl = wpa_s->hw.modes[i].channels;
404 for (j = 0; j < wpa_s->hw.modes[i].num_channels; j++) {
405 if (chnl[j].flag & HOSTAPD_CHAN_DISABLED)
406 continue;
407 if (is_6ghz_freq(chnl[j].freq))
408 return true;
409 }
410 }
411 }
412
413 return false;
414}
415#endif /* CONFIG_P2P */
416
417
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800418static void wpa_supplicant_optimize_freqs(
419 struct wpa_supplicant *wpa_s, struct wpa_driver_scan_params *params)
420{
421#ifdef CONFIG_P2P
422 if (params->freqs == NULL && wpa_s->p2p_in_provisioning &&
423 wpa_s->go_params) {
424 /* Optimize provisioning state scan based on GO information */
425 if (wpa_s->p2p_in_provisioning < 5 &&
426 wpa_s->go_params->freq > 0) {
427 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Scan only GO "
428 "preferred frequency %d MHz",
429 wpa_s->go_params->freq);
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800430 params->freqs = os_calloc(2, sizeof(int));
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800431 if (params->freqs)
432 params->freqs[0] = wpa_s->go_params->freq;
433 } else if (wpa_s->p2p_in_provisioning < 8 &&
434 wpa_s->go_params->freq_list[0]) {
435 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Scan only common "
436 "channels");
437 int_array_concat(&params->freqs,
438 wpa_s->go_params->freq_list);
439 if (params->freqs)
440 int_array_sort_unique(params->freqs);
441 }
442 wpa_s->p2p_in_provisioning++;
443 }
Dmitry Shmidt15907092014-03-25 10:42:57 -0700444
445 if (params->freqs == NULL && wpa_s->p2p_in_invitation) {
446 /*
447 * Optimize scan based on GO information during persistent
448 * group reinvocation
449 */
Dmitry Shmidt6dc03bd2014-05-16 10:40:13 -0700450 if (wpa_s->p2p_in_invitation < 5 &&
Dmitry Shmidt15907092014-03-25 10:42:57 -0700451 wpa_s->p2p_invite_go_freq > 0) {
452 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Scan only GO preferred frequency %d MHz during invitation",
453 wpa_s->p2p_invite_go_freq);
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800454 params->freqs = os_calloc(2, sizeof(int));
Dmitry Shmidt15907092014-03-25 10:42:57 -0700455 if (params->freqs)
456 params->freqs[0] = wpa_s->p2p_invite_go_freq;
457 }
458 wpa_s->p2p_in_invitation++;
459 if (wpa_s->p2p_in_invitation > 20) {
460 /*
461 * This should not really happen since the variable is
462 * cleared on group removal, but if it does happen, make
463 * sure we do not get stuck in special invitation scan
464 * mode.
465 */
466 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Clear p2p_in_invitation");
467 wpa_s->p2p_in_invitation = 0;
468 }
469 }
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800470#endif /* CONFIG_P2P */
471
472#ifdef CONFIG_WPS
473 if (params->freqs == NULL && wpa_s->after_wps && wpa_s->wps_freq) {
474 /*
475 * Optimize post-provisioning scan based on channel used
476 * during provisioning.
477 */
478 wpa_dbg(wpa_s, MSG_DEBUG, "WPS: Scan only frequency %u MHz "
479 "that was used during provisioning", wpa_s->wps_freq);
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800480 params->freqs = os_calloc(2, sizeof(int));
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800481 if (params->freqs)
482 params->freqs[0] = wpa_s->wps_freq;
483 wpa_s->after_wps--;
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800484 } else if (wpa_s->after_wps)
485 wpa_s->after_wps--;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800486
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -0800487 if (params->freqs == NULL && wpa_s->known_wps_freq && wpa_s->wps_freq)
488 {
489 /* Optimize provisioning scan based on already known channel */
490 wpa_dbg(wpa_s, MSG_DEBUG, "WPS: Scan only frequency %u MHz",
491 wpa_s->wps_freq);
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800492 params->freqs = os_calloc(2, sizeof(int));
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -0800493 if (params->freqs)
494 params->freqs[0] = wpa_s->wps_freq;
495 wpa_s->known_wps_freq = 0; /* only do this once */
496 }
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800497#endif /* CONFIG_WPS */
498}
499
500
501#ifdef CONFIG_INTERWORKING
502static void wpas_add_interworking_elements(struct wpa_supplicant *wpa_s,
503 struct wpabuf *buf)
504{
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800505 wpabuf_put_u8(buf, WLAN_EID_INTERWORKING);
506 wpabuf_put_u8(buf, is_zero_ether_addr(wpa_s->conf->hessid) ? 1 :
507 1 + ETH_ALEN);
508 wpabuf_put_u8(buf, wpa_s->conf->access_network_type);
509 /* No Venue Info */
510 if (!is_zero_ether_addr(wpa_s->conf->hessid))
511 wpabuf_put_data(buf, wpa_s->conf->hessid, ETH_ALEN);
512}
513#endif /* CONFIG_INTERWORKING */
514
515
Hai Shalomce48b4a2018-09-05 11:41:35 -0700516#ifdef CONFIG_MBO
517static void wpas_fils_req_param_add_max_channel(struct wpa_supplicant *wpa_s,
518 struct wpabuf **ie)
519{
520 if (wpabuf_resize(ie, 5)) {
521 wpa_printf(MSG_DEBUG,
522 "Failed to allocate space for FILS Request Parameters element");
523 return;
524 }
525
526 /* FILS Request Parameters element */
527 wpabuf_put_u8(*ie, WLAN_EID_EXTENSION);
528 wpabuf_put_u8(*ie, 3); /* FILS Request attribute length */
529 wpabuf_put_u8(*ie, WLAN_EID_EXT_FILS_REQ_PARAMS);
530 /* Parameter control bitmap */
531 wpabuf_put_u8(*ie, 0);
532 /* Max Channel Time field - contains the value of MaxChannelTime
533 * parameter of the MLME-SCAN.request primitive represented in units of
534 * TUs, as an unsigned integer. A Max Channel Time field value of 255
535 * is used to indicate any duration of more than 254 TUs, or an
536 * unspecified or unknown duration. (IEEE Std 802.11ai-2016, 9.4.2.178)
537 */
538 wpabuf_put_u8(*ie, 255);
539}
540#endif /* CONFIG_MBO */
541
542
Dmitry Shmidt7f2c7532016-08-15 09:48:12 -0700543void wpa_supplicant_set_default_scan_ies(struct wpa_supplicant *wpa_s)
544{
545 struct wpabuf *default_ies = NULL;
546 u8 ext_capab[18];
Hai Shalom60840252021-02-19 19:02:11 -0800547 int ext_capab_len, frame_id;
Dmitry Shmidt7f2c7532016-08-15 09:48:12 -0700548 enum wpa_driver_if_type type = WPA_IF_STATION;
549
550#ifdef CONFIG_P2P
551 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT)
552 type = WPA_IF_P2P_CLIENT;
553#endif /* CONFIG_P2P */
554
555 wpa_drv_get_ext_capa(wpa_s, type);
556
557 ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab,
558 sizeof(ext_capab));
559 if (ext_capab_len > 0 &&
560 wpabuf_resize(&default_ies, ext_capab_len) == 0)
561 wpabuf_put_data(default_ies, ext_capab, ext_capab_len);
562
563#ifdef CONFIG_MBO
Hai Shalomce48b4a2018-09-05 11:41:35 -0700564 if (wpa_s->enable_oce & OCE_STA)
565 wpas_fils_req_param_add_max_channel(wpa_s, &default_ies);
Dmitry Shmidtd2986c22017-10-23 14:22:09 -0700566 /* Send MBO and OCE capabilities */
567 if (wpabuf_resize(&default_ies, 12) == 0)
Dmitry Shmidt7f2c7532016-08-15 09:48:12 -0700568 wpas_mbo_scan_ie(wpa_s, default_ies);
569#endif /* CONFIG_MBO */
570
Hai Shalom60840252021-02-19 19:02:11 -0800571 if (type == WPA_IF_P2P_CLIENT)
572 frame_id = VENDOR_ELEM_PROBE_REQ_P2P;
573 else
574 frame_id = VENDOR_ELEM_PROBE_REQ;
575
576 if (wpa_s->vendor_elem[frame_id]) {
577 size_t len;
578
579 len = wpabuf_len(wpa_s->vendor_elem[frame_id]);
580 if (len > 0 && wpabuf_resize(&default_ies, len) == 0)
581 wpabuf_put_buf(default_ies,
582 wpa_s->vendor_elem[frame_id]);
583 }
584
Dmitry Shmidt7f2c7532016-08-15 09:48:12 -0700585 if (default_ies)
586 wpa_drv_set_default_scan_ies(wpa_s, wpabuf_head(default_ies),
587 wpabuf_len(default_ies));
588 wpabuf_free(default_ies);
589}
590
591
Dmitry Shmidt61d9df32012-08-29 16:22:06 -0700592static struct wpabuf * wpa_supplicant_extra_ies(struct wpa_supplicant *wpa_s)
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800593{
594 struct wpabuf *extra_ie = NULL;
Dmitry Shmidtdda10c22015-03-24 16:05:01 -0700595 u8 ext_capab[18];
596 int ext_capab_len;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800597#ifdef CONFIG_WPS
598 int wps = 0;
599 enum wps_request_type req_type = WPS_REQ_ENROLLEE_INFO;
600#endif /* CONFIG_WPS */
601
Dmitry Shmidtd5ab1b52016-06-21 12:38:41 -0700602#ifdef CONFIG_P2P
603 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT)
604 wpa_drv_get_ext_capa(wpa_s, WPA_IF_P2P_CLIENT);
605 else
606#endif /* CONFIG_P2P */
607 wpa_drv_get_ext_capa(wpa_s, WPA_IF_STATION);
608
Dmitry Shmidtdda10c22015-03-24 16:05:01 -0700609 ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab,
610 sizeof(ext_capab));
611 if (ext_capab_len > 0 &&
612 wpabuf_resize(&extra_ie, ext_capab_len) == 0)
613 wpabuf_put_data(extra_ie, ext_capab, ext_capab_len);
614
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800615#ifdef CONFIG_INTERWORKING
616 if (wpa_s->conf->interworking &&
617 wpabuf_resize(&extra_ie, 100) == 0)
618 wpas_add_interworking_elements(wpa_s, extra_ie);
619#endif /* CONFIG_INTERWORKING */
620
Hai Shalomce48b4a2018-09-05 11:41:35 -0700621#ifdef CONFIG_MBO
622 if (wpa_s->enable_oce & OCE_STA)
623 wpas_fils_req_param_add_max_channel(wpa_s, &extra_ie);
624#endif /* CONFIG_MBO */
625
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800626#ifdef CONFIG_WPS
627 wps = wpas_wps_in_use(wpa_s, &req_type);
628
629 if (wps) {
630 struct wpabuf *wps_ie;
Dmitry Shmidt04949592012-07-19 12:16:46 -0700631 wps_ie = wps_build_probe_req_ie(wps == 2 ? DEV_PW_PUSHBUTTON :
632 DEV_PW_DEFAULT,
633 &wpa_s->wps->dev,
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800634 wpa_s->wps->uuid, req_type,
635 0, NULL);
636 if (wps_ie) {
637 if (wpabuf_resize(&extra_ie, wpabuf_len(wps_ie)) == 0)
638 wpabuf_put_buf(extra_ie, wps_ie);
639 wpabuf_free(wps_ie);
640 }
641 }
642
643#ifdef CONFIG_P2P
644 if (wps) {
645 size_t ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
646 if (wpabuf_resize(&extra_ie, ielen) == 0)
647 wpas_p2p_scan_ie(wpa_s, extra_ie);
648 }
649#endif /* CONFIG_P2P */
650
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800651 wpa_supplicant_mesh_add_scan_ie(wpa_s, &extra_ie);
652
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800653#endif /* CONFIG_WPS */
654
Dmitry Shmidt51b6ea82013-05-08 10:42:09 -0700655#ifdef CONFIG_HS20
Hai Shalom74f70d42019-02-11 14:42:39 -0800656 if (wpa_s->conf->hs20 && wpabuf_resize(&extra_ie, 9) == 0)
657 wpas_hs20_add_indication(extra_ie, -1, 0);
Dmitry Shmidt51b6ea82013-05-08 10:42:09 -0700658#endif /* CONFIG_HS20 */
659
Dmitry Shmidtd80a4012015-11-05 16:35:40 -0800660#ifdef CONFIG_FST
661 if (wpa_s->fst_ies &&
662 wpabuf_resize(&extra_ie, wpabuf_len(wpa_s->fst_ies)) == 0)
663 wpabuf_put_buf(extra_ie, wpa_s->fst_ies);
664#endif /* CONFIG_FST */
665
Dmitry Shmidt57c2d392016-02-23 13:40:19 -0800666#ifdef CONFIG_MBO
Dmitry Shmidtd2986c22017-10-23 14:22:09 -0700667 /* Send MBO and OCE capabilities */
668 if (wpabuf_resize(&extra_ie, 12) == 0)
Dmitry Shmidt57c2d392016-02-23 13:40:19 -0800669 wpas_mbo_scan_ie(wpa_s, extra_ie);
670#endif /* CONFIG_MBO */
671
Dmitry Shmidt849734c2016-05-27 09:59:01 -0700672 if (wpa_s->vendor_elem[VENDOR_ELEM_PROBE_REQ]) {
673 struct wpabuf *buf = wpa_s->vendor_elem[VENDOR_ELEM_PROBE_REQ];
674
675 if (wpabuf_resize(&extra_ie, wpabuf_len(buf)) == 0)
676 wpabuf_put_buf(extra_ie, buf);
677 }
678
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800679 return extra_ie;
680}
681
682
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800683#ifdef CONFIG_P2P
684
685/*
686 * Check whether there are any enabled networks or credentials that could be
687 * used for a non-P2P connection.
688 */
689static int non_p2p_network_enabled(struct wpa_supplicant *wpa_s)
690{
691 struct wpa_ssid *ssid;
692
693 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
694 if (wpas_network_disabled(wpa_s, ssid))
695 continue;
696 if (!ssid->p2p_group)
697 return 1;
698 }
699
700 if (wpa_s->conf->cred && wpa_s->conf->interworking &&
701 wpa_s->conf->auto_interworking)
702 return 1;
703
704 return 0;
705}
706
Dmitry Shmidtea69e842013-05-13 14:52:28 -0700707#endif /* CONFIG_P2P */
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800708
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800709
Hai Shalom60840252021-02-19 19:02:11 -0800710int wpa_add_scan_freqs_list(struct wpa_supplicant *wpa_s,
711 enum hostapd_hw_mode band,
712 struct wpa_driver_scan_params *params, bool is_6ghz)
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700713{
714 /* Include only supported channels for the specified band */
715 struct hostapd_hw_modes *mode;
Hai Shalom60840252021-02-19 19:02:11 -0800716 int num_chans = 0;
717 int *freqs, i;
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700718
Hai Shalomfdcde762020-04-02 11:19:20 -0700719 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, band, is_6ghz);
Hai Shalom60840252021-02-19 19:02:11 -0800720 if (!mode)
721 return -1;
722
723 if (params->freqs) {
724 while (params->freqs[num_chans])
725 num_chans++;
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700726 }
727
Hai Shalom60840252021-02-19 19:02:11 -0800728 freqs = os_realloc(params->freqs,
729 (num_chans + mode->num_channels + 1) * sizeof(int));
730 if (!freqs)
731 return -1;
732
733 params->freqs = freqs;
734 for (i = 0; i < mode->num_channels; i++) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700735 if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED)
736 continue;
Hai Shalom60840252021-02-19 19:02:11 -0800737 params->freqs[num_chans++] = mode->channels[i].freq;
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700738 }
Hai Shalom60840252021-02-19 19:02:11 -0800739 params->freqs[num_chans] = 0;
740
741 return 0;
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700742}
743
744
745static void wpa_setband_scan_freqs(struct wpa_supplicant *wpa_s,
746 struct wpa_driver_scan_params *params)
747{
748 if (wpa_s->hw.modes == NULL)
749 return; /* unknown what channels the driver supports */
750 if (params->freqs)
751 return; /* already using a limited channel set */
Hai Shalom60840252021-02-19 19:02:11 -0800752
753 if (wpa_s->setband_mask & WPA_SETBAND_5G)
754 wpa_add_scan_freqs_list(wpa_s, HOSTAPD_MODE_IEEE80211A, params,
Hai Shaloma20dcd72022-02-04 13:43:00 -0800755 false);
Hai Shalom60840252021-02-19 19:02:11 -0800756 if (wpa_s->setband_mask & WPA_SETBAND_2G)
757 wpa_add_scan_freqs_list(wpa_s, HOSTAPD_MODE_IEEE80211G, params,
Hai Shaloma20dcd72022-02-04 13:43:00 -0800758 false);
Hai Shalom60840252021-02-19 19:02:11 -0800759 if (wpa_s->setband_mask & WPA_SETBAND_6G)
760 wpa_add_scan_freqs_list(wpa_s, HOSTAPD_MODE_IEEE80211A, params,
Hai Shaloma20dcd72022-02-04 13:43:00 -0800761 true);
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700762}
763
764
Hai Shalom39ba6fc2019-01-22 12:40:38 -0800765static void wpa_add_scan_ssid(struct wpa_supplicant *wpa_s,
766 struct wpa_driver_scan_params *params,
767 size_t max_ssids, const u8 *ssid, size_t ssid_len)
768{
769 unsigned int j;
770
771 for (j = 0; j < params->num_ssids; j++) {
772 if (params->ssids[j].ssid_len == ssid_len &&
773 params->ssids[j].ssid &&
774 os_memcmp(params->ssids[j].ssid, ssid, ssid_len) == 0)
775 return; /* already in the list */
776 }
777
778 if (params->num_ssids + 1 > max_ssids) {
779 wpa_printf(MSG_DEBUG, "Over max scan SSIDs for manual request");
780 return;
781 }
782
783 wpa_printf(MSG_DEBUG, "Scan SSID (manual request): %s",
784 wpa_ssid_txt(ssid, ssid_len));
785
786 params->ssids[params->num_ssids].ssid = ssid;
787 params->ssids[params->num_ssids].ssid_len = ssid_len;
788 params->num_ssids++;
789}
790
791
792static void wpa_add_owe_scan_ssid(struct wpa_supplicant *wpa_s,
793 struct wpa_driver_scan_params *params,
794 struct wpa_ssid *ssid, size_t max_ssids)
795{
796#ifdef CONFIG_OWE
797 struct wpa_bss *bss;
798
799 if (!(ssid->key_mgmt & WPA_KEY_MGMT_OWE))
800 return;
801
802 wpa_printf(MSG_DEBUG, "OWE: Look for transition mode AP. ssid=%s",
803 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
804
805 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
806 const u8 *owe, *pos, *end;
807 const u8 *owe_ssid;
808 size_t owe_ssid_len;
809
810 if (bss->ssid_len != ssid->ssid_len ||
811 os_memcmp(bss->ssid, ssid->ssid, ssid->ssid_len) != 0)
812 continue;
813
814 owe = wpa_bss_get_vendor_ie(bss, OWE_IE_VENDOR_TYPE);
815 if (!owe || owe[1] < 4)
816 continue;
817
818 pos = owe + 6;
819 end = owe + 2 + owe[1];
820
821 /* Must include BSSID and ssid_len */
822 if (end - pos < ETH_ALEN + 1)
823 return;
824
825 /* Skip BSSID */
826 pos += ETH_ALEN;
827 owe_ssid_len = *pos++;
828 owe_ssid = pos;
829
830 if ((size_t) (end - pos) < owe_ssid_len ||
831 owe_ssid_len > SSID_MAX_LEN)
832 return;
833
834 wpa_printf(MSG_DEBUG,
835 "OWE: scan_ssids: transition mode OWE ssid=%s",
836 wpa_ssid_txt(owe_ssid, owe_ssid_len));
837
838 wpa_add_scan_ssid(wpa_s, params, max_ssids,
839 owe_ssid, owe_ssid_len);
840 return;
841 }
842#endif /* CONFIG_OWE */
843}
844
845
Dmitry Shmidtc2817022014-07-02 10:32:10 -0700846static void wpa_set_scan_ssids(struct wpa_supplicant *wpa_s,
847 struct wpa_driver_scan_params *params,
848 size_t max_ssids)
849{
850 unsigned int i;
851 struct wpa_ssid *ssid;
852
Dmitry Shmidt58d12ad2016-07-28 10:07:03 -0700853 /*
854 * For devices with max_ssids greater than 1, leave the last slot empty
855 * for adding the wildcard scan entry.
856 */
857 max_ssids = max_ssids > 1 ? max_ssids - 1 : max_ssids;
858
Dmitry Shmidtc2817022014-07-02 10:32:10 -0700859 for (i = 0; i < wpa_s->scan_id_count; i++) {
Dmitry Shmidtc2817022014-07-02 10:32:10 -0700860 ssid = wpa_config_get_network(wpa_s->conf, wpa_s->scan_id[i]);
Hai Shalom39ba6fc2019-01-22 12:40:38 -0800861 if (!ssid)
Dmitry Shmidtc2817022014-07-02 10:32:10 -0700862 continue;
Hai Shalom39ba6fc2019-01-22 12:40:38 -0800863 if (ssid->scan_ssid)
864 wpa_add_scan_ssid(wpa_s, params, max_ssids,
865 ssid->ssid, ssid->ssid_len);
866 /*
867 * Also add the SSID of the OWE BSS, to allow discovery of
868 * transition mode APs more quickly.
869 */
870 wpa_add_owe_scan_ssid(wpa_s, params, ssid, max_ssids);
Dmitry Shmidtc2817022014-07-02 10:32:10 -0700871 }
872
873 wpa_s->scan_id_count = 0;
874}
875
876
Dmitry Shmidt7a53dbb2015-06-11 13:13:53 -0700877static int wpa_set_ssids_from_scan_req(struct wpa_supplicant *wpa_s,
878 struct wpa_driver_scan_params *params,
879 size_t max_ssids)
880{
881 unsigned int i;
882
883 if (wpa_s->ssids_from_scan_req == NULL ||
884 wpa_s->num_ssids_from_scan_req == 0)
885 return 0;
886
887 if (wpa_s->num_ssids_from_scan_req > max_ssids) {
888 wpa_s->num_ssids_from_scan_req = max_ssids;
889 wpa_printf(MSG_DEBUG, "Over max scan SSIDs from scan req: %u",
890 (unsigned int) max_ssids);
891 }
892
893 for (i = 0; i < wpa_s->num_ssids_from_scan_req; i++) {
894 params->ssids[i].ssid = wpa_s->ssids_from_scan_req[i].ssid;
895 params->ssids[i].ssid_len =
896 wpa_s->ssids_from_scan_req[i].ssid_len;
897 wpa_hexdump_ascii(MSG_DEBUG, "specific SSID",
898 params->ssids[i].ssid,
899 params->ssids[i].ssid_len);
900 }
901
902 params->num_ssids = wpa_s->num_ssids_from_scan_req;
903 wpa_s->num_ssids_from_scan_req = 0;
904 return 1;
905}
906
907
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700908static void wpa_supplicant_scan(void *eloop_ctx, void *timeout_ctx)
909{
910 struct wpa_supplicant *wpa_s = eloop_ctx;
911 struct wpa_ssid *ssid;
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800912 int ret, p2p_in_prog;
Dmitry Shmidt04949592012-07-19 12:16:46 -0700913 struct wpabuf *extra_ie = NULL;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700914 struct wpa_driver_scan_params params;
Dmitry Shmidt04949592012-07-19 12:16:46 -0700915 struct wpa_driver_scan_params *scan_params;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700916 size_t max_ssids;
Dmitry Shmidt203eadb2015-03-05 14:16:04 -0800917 int connect_without_scan = 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700918
Dmitry Shmidt29333592017-01-09 12:27:11 -0800919 wpa_s->ignore_post_flush_scan_res = 0;
920
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700921 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
922 wpa_dbg(wpa_s, MSG_DEBUG, "Skip scan - interface disabled");
923 return;
924 }
925
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800926 if (wpa_s->disconnected && wpa_s->scan_req == NORMAL_SCAN_REQ) {
Dmitry Shmidtaa532512012-09-24 10:35:31 -0700927 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnected - do not scan");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700928 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
929 return;
930 }
Dmitry Shmidte0e48dc2013-11-18 12:00:06 -0800931
Dmitry Shmidt5887a9d2012-09-14 10:47:43 -0700932 if (wpa_s->scanning) {
Dmitry Shmidte0e48dc2013-11-18 12:00:06 -0800933 /*
934 * If we are already in scanning state, we shall reschedule the
935 * the incoming scan request.
936 */
937 wpa_dbg(wpa_s, MSG_DEBUG, "Already scanning - Reschedule the incoming scan req");
938 wpa_supplicant_req_scan(wpa_s, 1, 0);
Dmitry Shmidt5887a9d2012-09-14 10:47:43 -0700939 return;
940 }
Dmitry Shmidte0e48dc2013-11-18 12:00:06 -0800941
Dmitry Shmidt04949592012-07-19 12:16:46 -0700942 if (!wpa_supplicant_enabled_networks(wpa_s) &&
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800943 wpa_s->scan_req == NORMAL_SCAN_REQ) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700944 wpa_dbg(wpa_s, MSG_DEBUG, "No enabled networks - do not scan");
945 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
946 return;
947 }
948
949 if (wpa_s->conf->ap_scan != 0 &&
950 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED)) {
951 wpa_dbg(wpa_s, MSG_DEBUG, "Using wired authentication - "
952 "overriding ap_scan configuration");
953 wpa_s->conf->ap_scan = 0;
954 wpas_notify_ap_scan_changed(wpa_s);
955 }
956
957 if (wpa_s->conf->ap_scan == 0) {
958 wpa_supplicant_gen_assoc_event(wpa_s);
959 return;
960 }
961
Dmitry Shmidt203eadb2015-03-05 14:16:04 -0800962 ssid = NULL;
963 if (wpa_s->scan_req != MANUAL_SCAN_REQ &&
964 wpa_s->connect_without_scan) {
965 connect_without_scan = 1;
966 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
967 if (ssid == wpa_s->connect_without_scan)
968 break;
969 }
970 }
971
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800972 p2p_in_prog = wpas_p2p_in_progress(wpa_s);
Dmitry Shmidt203eadb2015-03-05 14:16:04 -0800973 if (p2p_in_prog && p2p_in_prog != 2 &&
974 (!ssid ||
975 (ssid->mode != WPAS_MODE_AP && ssid->mode != WPAS_MODE_P2P_GO))) {
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800976 wpa_dbg(wpa_s, MSG_DEBUG, "Delay station mode scan while P2P operation is in progress");
977 wpa_supplicant_req_scan(wpa_s, 5, 0);
Dmitry Shmidt051af732013-10-22 13:52:46 -0700978 return;
979 }
Dmitry Shmidt051af732013-10-22 13:52:46 -0700980
Dmitry Shmidtabb90a32016-12-05 15:34:39 -0800981 /*
982 * Don't cancel the scan based on ongoing PNO; defer it. Some scans are
983 * used for changing modes inside wpa_supplicant (roaming,
984 * auto-reconnect, etc). Discarding the scan might hurt these processes.
985 * The normal use case for PNO is to suspend the host immediately after
986 * starting PNO, so the periodic 100 ms attempts to run the scan do not
987 * normally happen in practice multiple times, i.e., this is simply
988 * restarting scanning once the host is woken up and PNO stopped.
989 */
990 if (wpa_s->pno || wpa_s->pno_sched_pending) {
991 wpa_dbg(wpa_s, MSG_DEBUG, "Defer scan - PNO is in progress");
992 wpa_supplicant_req_scan(wpa_s, 0, 100000);
993 return;
994 }
995
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800996 if (wpa_s->conf->ap_scan == 2)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700997 max_ssids = 1;
998 else {
999 max_ssids = wpa_s->max_scan_ssids;
1000 if (max_ssids > WPAS_MAX_SCAN_SSIDS)
1001 max_ssids = WPAS_MAX_SCAN_SSIDS;
1002 }
1003
Dmitry Shmidt01904cf2013-12-05 11:08:35 -08001004 wpa_s->last_scan_req = wpa_s->scan_req;
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001005 wpa_s->scan_req = NORMAL_SCAN_REQ;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001006
Dmitry Shmidt203eadb2015-03-05 14:16:04 -08001007 if (connect_without_scan) {
1008 wpa_s->connect_without_scan = NULL;
1009 if (ssid) {
1010 wpa_printf(MSG_DEBUG, "Start a pre-selected network "
1011 "without scan step");
1012 wpa_supplicant_associate(wpa_s, NULL, ssid);
1013 return;
1014 }
1015 }
1016
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001017 os_memset(&params, 0, sizeof(params));
1018
Dmitry Shmidt2f74e362015-01-21 13:19:05 -08001019 wpa_s->scan_prev_wpa_state = wpa_s->wpa_state;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001020 if (wpa_s->wpa_state == WPA_DISCONNECTED ||
1021 wpa_s->wpa_state == WPA_INACTIVE)
1022 wpa_supplicant_set_state(wpa_s, WPA_SCANNING);
1023
Dmitry Shmidt04949592012-07-19 12:16:46 -07001024 /*
1025 * If autoscan has set its own scanning parameters
1026 */
1027 if (wpa_s->autoscan_params != NULL) {
1028 scan_params = wpa_s->autoscan_params;
1029 goto scan;
1030 }
1031
Dmitry Shmidt7a53dbb2015-06-11 13:13:53 -07001032 if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
1033 wpa_set_ssids_from_scan_req(wpa_s, &params, max_ssids)) {
1034 wpa_printf(MSG_DEBUG, "Use specific SSIDs from SCAN command");
1035 goto ssid_list_set;
1036 }
1037
Dmitry Shmidt04949592012-07-19 12:16:46 -07001038#ifdef CONFIG_P2P
Sunil Ravib3986b82021-06-01 13:15:33 -07001039#ifdef ANDROID
1040 if (wpa_s->global->p2p_go_found_external_scan &&
1041 (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) &&
1042 (wpa_s->global->p2p_group_formation == wpa_s)) {
1043 wpa_dbg(wpa_s, MSG_DEBUG,
1044 "Try to fast associate since GO is found in external scan");
1045 wpa_s->global->p2p_go_found_external_scan = 0;
1046 if (wpa_supplicant_fast_associate(wpa_s) >= 0) {
1047 return;
1048 }
1049 }
1050#endif
1051
Dmitry Shmidt04949592012-07-19 12:16:46 -07001052 if ((wpa_s->p2p_in_provisioning || wpa_s->show_group_started) &&
Dmitry Shmidt807291d2015-01-27 13:40:23 -08001053 wpa_s->go_params && !wpa_s->conf->passive_scan) {
Dmitry Shmidtcce06662013-11-04 18:44:24 -08001054 wpa_printf(MSG_DEBUG, "P2P: Use specific SSID for scan during P2P group formation (p2p_in_provisioning=%d show_group_started=%d)",
1055 wpa_s->p2p_in_provisioning,
1056 wpa_s->show_group_started);
Dmitry Shmidt04949592012-07-19 12:16:46 -07001057 params.ssids[0].ssid = wpa_s->go_params->ssid;
1058 params.ssids[0].ssid_len = wpa_s->go_params->ssid_len;
1059 params.num_ssids = 1;
1060 goto ssid_list_set;
1061 }
Dmitry Shmidt15907092014-03-25 10:42:57 -07001062
1063 if (wpa_s->p2p_in_invitation) {
1064 if (wpa_s->current_ssid) {
1065 wpa_printf(MSG_DEBUG, "P2P: Use specific SSID for scan during invitation");
1066 params.ssids[0].ssid = wpa_s->current_ssid->ssid;
1067 params.ssids[0].ssid_len =
1068 wpa_s->current_ssid->ssid_len;
1069 params.num_ssids = 1;
1070 } else {
1071 wpa_printf(MSG_DEBUG, "P2P: No specific SSID known for scan during invitation");
1072 }
1073 goto ssid_list_set;
1074 }
Dmitry Shmidt04949592012-07-19 12:16:46 -07001075#endif /* CONFIG_P2P */
1076
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001077 /* Find the starting point from which to continue scanning */
1078 ssid = wpa_s->conf->ssid;
1079 if (wpa_s->prev_scan_ssid != WILDCARD_SSID_SCAN) {
1080 while (ssid) {
1081 if (ssid == wpa_s->prev_scan_ssid) {
1082 ssid = ssid->next;
1083 break;
1084 }
1085 ssid = ssid->next;
1086 }
1087 }
1088
Dmitry Shmidt01904cf2013-12-05 11:08:35 -08001089 if (wpa_s->last_scan_req != MANUAL_SCAN_REQ &&
Dmitry Shmidtd80a4012015-11-05 16:35:40 -08001090#ifdef CONFIG_AP
1091 !wpa_s->ap_iface &&
1092#endif /* CONFIG_AP */
Dmitry Shmidt01904cf2013-12-05 11:08:35 -08001093 wpa_s->conf->ap_scan == 2) {
Jouni Malinen75ecf522011-06-27 15:19:46 -07001094 wpa_s->connect_without_scan = NULL;
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08001095 wpa_s->prev_scan_wildcard = 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001096 wpa_supplicant_assoc_try(wpa_s, ssid);
1097 return;
1098 } else if (wpa_s->conf->ap_scan == 2) {
1099 /*
1100 * User-initiated scan request in ap_scan == 2; scan with
1101 * wildcard SSID.
1102 */
1103 ssid = NULL;
Dmitry Shmidt98660862014-03-11 17:26:21 -07001104 } else if (wpa_s->reattach && wpa_s->current_ssid != NULL) {
1105 /*
1106 * Perform single-channel single-SSID scan for
1107 * reassociate-to-same-BSS operation.
1108 */
1109 /* Setup SSID */
1110 ssid = wpa_s->current_ssid;
1111 wpa_hexdump_ascii(MSG_DEBUG, "Scan SSID",
1112 ssid->ssid, ssid->ssid_len);
1113 params.ssids[0].ssid = ssid->ssid;
1114 params.ssids[0].ssid_len = ssid->ssid_len;
1115 params.num_ssids = 1;
1116
1117 /*
1118 * Allocate memory for frequency array, allocate one extra
1119 * slot for the zero-terminator.
1120 */
1121 params.freqs = os_malloc(sizeof(int) * 2);
Dmitry Shmidtd5ab1b52016-06-21 12:38:41 -07001122 if (params.freqs) {
1123 params.freqs[0] = wpa_s->assoc_freq;
1124 params.freqs[1] = 0;
Dmitry Shmidt98660862014-03-11 17:26:21 -07001125 }
Dmitry Shmidt98660862014-03-11 17:26:21 -07001126
1127 /*
1128 * Reset the reattach flag so that we fall back to full scan if
1129 * this scan fails.
1130 */
1131 wpa_s->reattach = 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001132 } else {
1133 struct wpa_ssid *start = ssid, *tssid;
1134 int freqs_set = 0;
1135 if (ssid == NULL && max_ssids > 1)
1136 ssid = wpa_s->conf->ssid;
1137 while (ssid) {
Dmitry Shmidt04949592012-07-19 12:16:46 -07001138 if (!wpas_network_disabled(wpa_s, ssid) &&
1139 ssid->scan_ssid) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001140 wpa_hexdump_ascii(MSG_DEBUG, "Scan SSID",
1141 ssid->ssid, ssid->ssid_len);
1142 params.ssids[params.num_ssids].ssid =
1143 ssid->ssid;
1144 params.ssids[params.num_ssids].ssid_len =
1145 ssid->ssid_len;
1146 params.num_ssids++;
1147 if (params.num_ssids + 1 >= max_ssids)
1148 break;
1149 }
Hai Shalom39ba6fc2019-01-22 12:40:38 -08001150
1151 if (!wpas_network_disabled(wpa_s, ssid)) {
1152 /*
1153 * Also add the SSID of the OWE BSS, to allow
1154 * discovery of transition mode APs more
1155 * quickly.
1156 */
1157 wpa_add_owe_scan_ssid(wpa_s, &params, ssid,
1158 max_ssids);
1159 }
1160
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001161 ssid = ssid->next;
1162 if (ssid == start)
1163 break;
1164 if (ssid == NULL && max_ssids > 1 &&
1165 start != wpa_s->conf->ssid)
1166 ssid = wpa_s->conf->ssid;
1167 }
1168
Dmitry Shmidtc2817022014-07-02 10:32:10 -07001169 if (wpa_s->scan_id_count &&
1170 wpa_s->last_scan_req == MANUAL_SCAN_REQ)
1171 wpa_set_scan_ssids(wpa_s, &params, max_ssids);
1172
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -08001173 for (tssid = wpa_s->conf->ssid;
1174 wpa_s->last_scan_req != MANUAL_SCAN_REQ && tssid;
1175 tssid = tssid->next) {
Dmitry Shmidt04949592012-07-19 12:16:46 -07001176 if (wpas_network_disabled(wpa_s, tssid))
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001177 continue;
Hai Shalomfdcde762020-04-02 11:19:20 -07001178 if (((params.freqs || !freqs_set) &&
1179 tssid->scan_freq) &&
1180 int_array_len(params.freqs) < 100) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001181 int_array_concat(&params.freqs,
1182 tssid->scan_freq);
1183 } else {
1184 os_free(params.freqs);
1185 params.freqs = NULL;
1186 }
1187 freqs_set = 1;
1188 }
1189 int_array_sort_unique(params.freqs);
1190 }
1191
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08001192 if (ssid && max_ssids == 1) {
1193 /*
1194 * If the driver is limited to 1 SSID at a time interleave
1195 * wildcard SSID scans with specific SSID scans to avoid
1196 * waiting a long time for a wildcard scan.
1197 */
1198 if (!wpa_s->prev_scan_wildcard) {
1199 params.ssids[0].ssid = NULL;
1200 params.ssids[0].ssid_len = 0;
1201 wpa_s->prev_scan_wildcard = 1;
1202 wpa_dbg(wpa_s, MSG_DEBUG, "Starting AP scan for "
1203 "wildcard SSID (Interleave with specific)");
1204 } else {
1205 wpa_s->prev_scan_ssid = ssid;
1206 wpa_s->prev_scan_wildcard = 0;
1207 wpa_dbg(wpa_s, MSG_DEBUG,
1208 "Starting AP scan for specific SSID: %s",
1209 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001210 }
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08001211 } else if (ssid) {
1212 /* max_ssids > 1 */
1213
1214 wpa_s->prev_scan_ssid = ssid;
1215 wpa_dbg(wpa_s, MSG_DEBUG, "Include wildcard SSID in "
1216 "the scan request");
1217 params.num_ssids++;
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08001218 } else if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
1219 wpa_s->manual_scan_passive && params.num_ssids == 0) {
1220 wpa_dbg(wpa_s, MSG_DEBUG, "Use passive scan based on manual request");
Dmitry Shmidt807291d2015-01-27 13:40:23 -08001221 } else if (wpa_s->conf->passive_scan) {
1222 wpa_dbg(wpa_s, MSG_DEBUG,
1223 "Use passive scan based on configuration");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001224 } else {
1225 wpa_s->prev_scan_ssid = WILDCARD_SSID_SCAN;
1226 params.num_ssids++;
1227 wpa_dbg(wpa_s, MSG_DEBUG, "Starting AP scan for wildcard "
1228 "SSID");
1229 }
1230
Dmitry Shmidt7a53dbb2015-06-11 13:13:53 -07001231ssid_list_set:
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001232 wpa_supplicant_optimize_freqs(wpa_s, &params);
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001233 extra_ie = wpa_supplicant_extra_ies(wpa_s);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001234
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08001235 if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
Dmitry Shmidt2f74e362015-01-21 13:19:05 -08001236 wpa_s->manual_scan_only_new) {
1237 wpa_printf(MSG_DEBUG,
1238 "Request driver to clear scan cache due to manual only_new=1 scan");
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08001239 params.only_new_results = 1;
Dmitry Shmidt2f74e362015-01-21 13:19:05 -08001240 }
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08001241
1242 if (wpa_s->last_scan_req == MANUAL_SCAN_REQ && params.freqs == NULL &&
1243 wpa_s->manual_scan_freqs) {
1244 wpa_dbg(wpa_s, MSG_DEBUG, "Limit manual scan to specified channels");
1245 params.freqs = wpa_s->manual_scan_freqs;
1246 wpa_s->manual_scan_freqs = NULL;
1247 }
1248
Dmitry Shmidtd2986c22017-10-23 14:22:09 -07001249 if (params.freqs == NULL && wpa_s->select_network_scan_freqs) {
1250 wpa_dbg(wpa_s, MSG_DEBUG,
1251 "Limit select_network scan to specified channels");
1252 params.freqs = wpa_s->select_network_scan_freqs;
1253 wpa_s->select_network_scan_freqs = NULL;
1254 }
1255
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001256 if (params.freqs == NULL && wpa_s->next_scan_freqs) {
1257 wpa_dbg(wpa_s, MSG_DEBUG, "Optimize scan based on previously "
1258 "generated frequency list");
1259 params.freqs = wpa_s->next_scan_freqs;
1260 } else
1261 os_free(wpa_s->next_scan_freqs);
1262 wpa_s->next_scan_freqs = NULL;
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001263 wpa_setband_scan_freqs(wpa_s, &params);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001264
Dmitry Shmidt51b6ea82013-05-08 10:42:09 -07001265 /* See if user specified frequencies. If so, scan only those. */
Hai Shalom60840252021-02-19 19:02:11 -08001266 if (wpa_s->last_scan_req == INITIAL_SCAN_REQ &&
1267 wpa_s->conf->initial_freq_list && !params.freqs) {
1268 wpa_dbg(wpa_s, MSG_DEBUG,
1269 "Optimize scan based on conf->initial_freq_list");
1270 int_array_concat(&params.freqs, wpa_s->conf->initial_freq_list);
1271 } else if (wpa_s->conf->freq_list && !params.freqs) {
Dmitry Shmidt51b6ea82013-05-08 10:42:09 -07001272 wpa_dbg(wpa_s, MSG_DEBUG,
1273 "Optimize scan based on conf->freq_list");
1274 int_array_concat(&params.freqs, wpa_s->conf->freq_list);
1275 }
1276
Dmitry Shmidtea69e842013-05-13 14:52:28 -07001277 /* Use current associated channel? */
1278 if (wpa_s->conf->scan_cur_freq && !params.freqs) {
Dmitry Shmidtc2ebb4b2013-07-24 12:57:51 -07001279 unsigned int num = wpa_s->num_multichan_concurrent;
1280
1281 params.freqs = os_calloc(num + 1, sizeof(int));
1282 if (params.freqs) {
1283 num = get_shared_radio_freqs(wpa_s, params.freqs, num);
1284 if (num > 0) {
1285 wpa_dbg(wpa_s, MSG_DEBUG, "Scan only the "
1286 "current operating channels since "
1287 "scan_cur_freq is enabled");
1288 } else {
1289 os_free(params.freqs);
1290 params.freqs = NULL;
1291 }
Dmitry Shmidtea69e842013-05-13 14:52:28 -07001292 }
1293 }
1294
Hai Shalomce48b4a2018-09-05 11:41:35 -07001295#ifdef CONFIG_MBO
1296 if (wpa_s->enable_oce & OCE_STA)
1297 params.oce_scan = 1;
1298#endif /* CONFIG_MBO */
1299
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001300 params.filter_ssids = wpa_supplicant_build_filter_ssids(
1301 wpa_s->conf, &params.num_filter_ssids);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001302 if (extra_ie) {
1303 params.extra_ies = wpabuf_head(extra_ie);
1304 params.extra_ies_len = wpabuf_len(extra_ie);
1305 }
1306
1307#ifdef CONFIG_P2P
Dmitry Shmidt413dde72014-04-11 10:23:22 -07001308 if (wpa_s->p2p_in_provisioning || wpa_s->p2p_in_invitation ||
Dmitry Shmidt04949592012-07-19 12:16:46 -07001309 (wpa_s->show_group_started && wpa_s->go_params)) {
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001310 /*
1311 * The interface may not yet be in P2P mode, so we have to
1312 * explicitly request P2P probe to disable CCK rates.
1313 */
1314 params.p2p_probe = 1;
1315 }
1316#endif /* CONFIG_P2P */
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001317
Dmitry Shmidtabb90a32016-12-05 15:34:39 -08001318 if ((wpa_s->mac_addr_rand_enable & MAC_ADDR_RAND_SCAN) &&
Hai Shalomc3565922019-10-28 11:58:20 -07001319 wpa_s->wpa_state <= WPA_SCANNING)
1320 wpa_setup_mac_addr_rand_params(&params, wpa_s->mac_addr_scan);
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -08001321
Dmitry Shmidt9c175262016-03-03 10:20:07 -08001322 if (!is_zero_ether_addr(wpa_s->next_scan_bssid)) {
1323 struct wpa_bss *bss;
1324
1325 params.bssid = wpa_s->next_scan_bssid;
1326 bss = wpa_bss_get_bssid_latest(wpa_s, params.bssid);
Hai Shalomfdcde762020-04-02 11:19:20 -07001327 if (!wpa_s->next_scan_bssid_wildcard_ssid &&
1328 bss && bss->ssid_len && params.num_ssids == 1 &&
Dmitry Shmidt9c175262016-03-03 10:20:07 -08001329 params.ssids[0].ssid_len == 0) {
1330 params.ssids[0].ssid = bss->ssid;
1331 params.ssids[0].ssid_len = bss->ssid_len;
1332 wpa_dbg(wpa_s, MSG_DEBUG,
1333 "Scan a previously specified BSSID " MACSTR
1334 " and SSID %s",
1335 MAC2STR(params.bssid),
1336 wpa_ssid_txt(bss->ssid, bss->ssid_len));
1337 } else {
1338 wpa_dbg(wpa_s, MSG_DEBUG,
1339 "Scan a previously specified BSSID " MACSTR,
1340 MAC2STR(params.bssid));
1341 }
1342 }
1343
Sunil8cd6f4d2022-06-28 18:40:46 +00001344 if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
1345 wpa_s->manual_non_coloc_6ghz) {
1346 wpa_dbg(wpa_s, MSG_DEBUG, "Collocated 6 GHz logic is disabled");
1347 params.non_coloc_6ghz = 1;
1348 }
1349
Dmitry Shmidt04949592012-07-19 12:16:46 -07001350 scan_params = &params;
1351
1352scan:
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001353#ifdef CONFIG_P2P
1354 /*
1355 * If the driver does not support multi-channel concurrency and a
1356 * virtual interface that shares the same radio with the wpa_s interface
1357 * is operating there may not be need to scan other channels apart from
1358 * the current operating channel on the other virtual interface. Filter
1359 * out other channels in case we are trying to find a connection for a
1360 * station interface when we are not configured to prefer station
1361 * connection and a concurrent operation is already in process.
1362 */
Dmitry Shmidt01904cf2013-12-05 11:08:35 -08001363 if (wpa_s->scan_for_connection &&
1364 wpa_s->last_scan_req == NORMAL_SCAN_REQ &&
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001365 !scan_params->freqs && !params.freqs &&
1366 wpas_is_p2p_prioritized(wpa_s) &&
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001367 wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
1368 non_p2p_network_enabled(wpa_s)) {
Dmitry Shmidtc2ebb4b2013-07-24 12:57:51 -07001369 unsigned int num = wpa_s->num_multichan_concurrent;
1370
1371 params.freqs = os_calloc(num + 1, sizeof(int));
1372 if (params.freqs) {
1373 num = get_shared_radio_freqs(wpa_s, params.freqs, num);
1374 if (num > 0 && num == wpa_s->num_multichan_concurrent) {
1375 wpa_dbg(wpa_s, MSG_DEBUG, "Scan only the current operating channels since all channels are already used");
1376 } else {
1377 os_free(params.freqs);
1378 params.freqs = NULL;
1379 }
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001380 }
1381 }
Hai Shaloma20dcd72022-02-04 13:43:00 -08001382
1383 if (!params.freqs &&
1384 (wpa_s->p2p_in_invitation || wpa_s->p2p_in_provisioning) &&
1385 !is_p2p_allow_6ghz(wpa_s->global->p2p) &&
1386 is_6ghz_supported(wpa_s)) {
1387 int i;
1388
1389 /* Exclude 5 GHz channels from the full scan for P2P connection
1390 * since the 6 GHz band is disabled for P2P uses. */
1391 wpa_printf(MSG_DEBUG,
1392 "P2P: 6 GHz disabled - update the scan frequency list");
1393 for (i = 0; i < wpa_s->hw.num_modes; i++) {
1394 if (wpa_s->hw.modes[i].num_channels == 0)
1395 continue;
1396 if (wpa_s->hw.modes[i].mode == HOSTAPD_MODE_IEEE80211G)
1397 wpa_add_scan_freqs_list(
1398 wpa_s, HOSTAPD_MODE_IEEE80211G,
1399 &params, false);
1400 if (wpa_s->hw.modes[i].mode == HOSTAPD_MODE_IEEE80211A)
1401 wpa_add_scan_freqs_list(
1402 wpa_s, HOSTAPD_MODE_IEEE80211A,
1403 &params, false);
1404 if (wpa_s->hw.modes[i].mode == HOSTAPD_MODE_IEEE80211AD)
1405 wpa_add_scan_freqs_list(
1406 wpa_s, HOSTAPD_MODE_IEEE80211AD,
1407 &params, false);
1408 }
1409 }
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001410#endif /* CONFIG_P2P */
1411
Dmitry Shmidt04949592012-07-19 12:16:46 -07001412 ret = wpa_supplicant_trigger_scan(wpa_s, scan_params);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001413
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08001414 if (ret && wpa_s->last_scan_req == MANUAL_SCAN_REQ && params.freqs &&
1415 !wpa_s->manual_scan_freqs) {
1416 /* Restore manual_scan_freqs for the next attempt */
1417 wpa_s->manual_scan_freqs = params.freqs;
1418 params.freqs = NULL;
1419 }
1420
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001421 wpabuf_free(extra_ie);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001422 os_free(params.freqs);
1423 os_free(params.filter_ssids);
Hai Shalomc3565922019-10-28 11:58:20 -07001424 os_free(params.mac_addr);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001425
1426 if (ret) {
1427 wpa_msg(wpa_s, MSG_WARNING, "Failed to initiate AP scan");
Dmitry Shmidt2f74e362015-01-21 13:19:05 -08001428 if (wpa_s->scan_prev_wpa_state != wpa_s->wpa_state)
1429 wpa_supplicant_set_state(wpa_s,
1430 wpa_s->scan_prev_wpa_state);
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001431 /* Restore scan_req since we will try to scan again */
Dmitry Shmidt01904cf2013-12-05 11:08:35 -08001432 wpa_s->scan_req = wpa_s->last_scan_req;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001433 wpa_supplicant_req_scan(wpa_s, 1, 0);
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001434 } else {
1435 wpa_s->scan_for_connection = 0;
Dmitry Shmidt2f74e362015-01-21 13:19:05 -08001436#ifdef CONFIG_INTERWORKING
1437 wpa_s->interworking_fast_assoc_tried = 0;
1438#endif /* CONFIG_INTERWORKING */
Hai Shalomfdcde762020-04-02 11:19:20 -07001439 wpa_s->next_scan_bssid_wildcard_ssid = 0;
Dmitry Shmidt9c175262016-03-03 10:20:07 -08001440 if (params.bssid)
1441 os_memset(wpa_s->next_scan_bssid, 0, ETH_ALEN);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001442 }
1443}
1444
1445
Dmitry Shmidt4b9d52f2013-02-05 17:44:43 -08001446void wpa_supplicant_update_scan_int(struct wpa_supplicant *wpa_s, int sec)
1447{
Dmitry Shmidtfa3fc4a2013-11-21 13:34:38 -08001448 struct os_reltime remaining, new_int;
Dmitry Shmidt4b9d52f2013-02-05 17:44:43 -08001449 int cancelled;
1450
1451 cancelled = eloop_cancel_timeout_one(wpa_supplicant_scan, wpa_s, NULL,
1452 &remaining);
1453
1454 new_int.sec = sec;
1455 new_int.usec = 0;
Dmitry Shmidtfa3fc4a2013-11-21 13:34:38 -08001456 if (cancelled && os_reltime_before(&remaining, &new_int)) {
Dmitry Shmidt4b9d52f2013-02-05 17:44:43 -08001457 new_int.sec = remaining.sec;
1458 new_int.usec = remaining.usec;
1459 }
1460
Dmitry Shmidt051af732013-10-22 13:52:46 -07001461 if (cancelled) {
1462 eloop_register_timeout(new_int.sec, new_int.usec,
1463 wpa_supplicant_scan, wpa_s, NULL);
1464 }
Dmitry Shmidt4b9d52f2013-02-05 17:44:43 -08001465 wpa_s->scan_interval = sec;
1466}
1467
1468
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001469/**
1470 * wpa_supplicant_req_scan - Schedule a scan for neighboring access points
1471 * @wpa_s: Pointer to wpa_supplicant data
1472 * @sec: Number of seconds after which to scan
1473 * @usec: Number of microseconds after which to scan
1474 *
1475 * This function is used to schedule a scan for neighboring access points after
1476 * the specified time.
1477 */
1478void wpa_supplicant_req_scan(struct wpa_supplicant *wpa_s, int sec, int usec)
1479{
Dmitry Shmidt203eadb2015-03-05 14:16:04 -08001480 int res;
1481
1482 if (wpa_s->p2p_mgmt) {
1483 wpa_dbg(wpa_s, MSG_DEBUG,
1484 "Ignore scan request (%d.%06d sec) on p2p_mgmt interface",
1485 sec, usec);
1486 return;
1487 }
1488
1489 res = eloop_deplete_timeout(sec, usec, wpa_supplicant_scan, wpa_s,
1490 NULL);
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08001491 if (res == 1) {
1492 wpa_dbg(wpa_s, MSG_DEBUG, "Rescheduling scan request: %d.%06d sec",
Dmitry Shmidte0e48dc2013-11-18 12:00:06 -08001493 sec, usec);
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08001494 } else if (res == 0) {
1495 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore new scan request for %d.%06d sec since an earlier request is scheduled to trigger sooner",
1496 sec, usec);
1497 } else {
1498 wpa_dbg(wpa_s, MSG_DEBUG, "Setting scan request: %d.%06d sec",
1499 sec, usec);
1500 eloop_register_timeout(sec, usec, wpa_supplicant_scan, wpa_s, NULL);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001501 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001502}
1503
1504
1505/**
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001506 * wpa_supplicant_delayed_sched_scan - Request a delayed scheduled scan
1507 * @wpa_s: Pointer to wpa_supplicant data
1508 * @sec: Number of seconds after which to scan
1509 * @usec: Number of microseconds after which to scan
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001510 * Returns: 0 on success or -1 otherwise
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001511 *
1512 * This function is used to schedule periodic scans for neighboring
1513 * access points after the specified time.
1514 */
1515int wpa_supplicant_delayed_sched_scan(struct wpa_supplicant *wpa_s,
1516 int sec, int usec)
1517{
1518 if (!wpa_s->sched_scan_supported)
1519 return -1;
1520
1521 eloop_register_timeout(sec, usec,
1522 wpa_supplicant_delayed_sched_scan_timeout,
1523 wpa_s, NULL);
1524
1525 return 0;
1526}
1527
1528
Dmitry Shmidtebd93af2017-02-21 13:40:44 -08001529static void
1530wpa_scan_set_relative_rssi_params(struct wpa_supplicant *wpa_s,
1531 struct wpa_driver_scan_params *params)
1532{
1533 if (wpa_s->wpa_state != WPA_COMPLETED ||
1534 !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SCHED_SCAN_RELATIVE_RSSI) ||
1535 wpa_s->srp.relative_rssi_set == 0)
1536 return;
1537
1538 params->relative_rssi_set = 1;
1539 params->relative_rssi = wpa_s->srp.relative_rssi;
1540
1541 if (wpa_s->srp.relative_adjust_rssi == 0)
1542 return;
1543
1544 params->relative_adjust_band = wpa_s->srp.relative_adjust_band;
1545 params->relative_adjust_rssi = wpa_s->srp.relative_adjust_rssi;
1546}
1547
1548
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001549/**
1550 * wpa_supplicant_req_sched_scan - Start a periodic scheduled scan
1551 * @wpa_s: Pointer to wpa_supplicant data
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001552 * Returns: 0 is sched_scan was started or -1 otherwise
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001553 *
1554 * This function is used to schedule periodic scans for neighboring
1555 * access points repeating the scan continuously.
1556 */
1557int wpa_supplicant_req_sched_scan(struct wpa_supplicant *wpa_s)
1558{
1559 struct wpa_driver_scan_params params;
Dmitry Shmidt04949592012-07-19 12:16:46 -07001560 struct wpa_driver_scan_params *scan_params;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001561 enum wpa_states prev_state;
Dmitry Shmidt04949592012-07-19 12:16:46 -07001562 struct wpa_ssid *ssid = NULL;
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001563 struct wpabuf *extra_ie = NULL;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001564 int ret;
1565 unsigned int max_sched_scan_ssids;
1566 int wildcard = 0;
1567 int need_ssids;
Dmitry Shmidtd7ff03d2015-12-04 14:49:35 -08001568 struct sched_scan_plan scan_plan;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001569
1570 if (!wpa_s->sched_scan_supported)
1571 return -1;
1572
1573 if (wpa_s->max_sched_scan_ssids > WPAS_MAX_SCAN_SSIDS)
1574 max_sched_scan_ssids = WPAS_MAX_SCAN_SSIDS;
1575 else
1576 max_sched_scan_ssids = wpa_s->max_sched_scan_ssids;
Dmitry Shmidt04949592012-07-19 12:16:46 -07001577 if (max_sched_scan_ssids < 1 || wpa_s->conf->disable_scan_offload)
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001578 return -1;
1579
Dmitry Shmidt9839ecd2016-11-07 11:05:47 -08001580 wpa_s->sched_scan_stop_req = 0;
1581
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001582 if (wpa_s->sched_scanning) {
1583 wpa_dbg(wpa_s, MSG_DEBUG, "Already sched scanning");
1584 return 0;
1585 }
1586
1587 need_ssids = 0;
1588 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
Dmitry Shmidt04949592012-07-19 12:16:46 -07001589 if (!wpas_network_disabled(wpa_s, ssid) && !ssid->scan_ssid) {
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001590 /* Use wildcard SSID to find this network */
1591 wildcard = 1;
Dmitry Shmidt04949592012-07-19 12:16:46 -07001592 } else if (!wpas_network_disabled(wpa_s, ssid) &&
1593 ssid->ssid_len)
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001594 need_ssids++;
Dmitry Shmidt04949592012-07-19 12:16:46 -07001595
1596#ifdef CONFIG_WPS
1597 if (!wpas_network_disabled(wpa_s, ssid) &&
1598 ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1599 /*
1600 * Normal scan is more reliable and faster for WPS
1601 * operations and since these are for short periods of
1602 * time, the benefit of trying to use sched_scan would
1603 * be limited.
1604 */
1605 wpa_dbg(wpa_s, MSG_DEBUG, "Use normal scan instead of "
1606 "sched_scan for WPS");
1607 return -1;
1608 }
1609#endif /* CONFIG_WPS */
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001610 }
1611 if (wildcard)
1612 need_ssids++;
1613
1614 if (wpa_s->normal_scans < 3 &&
1615 (need_ssids <= wpa_s->max_scan_ssids ||
1616 wpa_s->max_scan_ssids >= (int) max_sched_scan_ssids)) {
1617 /*
1618 * When normal scan can speed up operations, use that for the
1619 * first operations before starting the sched_scan to allow
1620 * user space sleep more. We do this only if the normal scan
1621 * has functionality that is suitable for this or if the
1622 * sched_scan does not have better support for multiple SSIDs.
1623 */
1624 wpa_dbg(wpa_s, MSG_DEBUG, "Use normal scan instead of "
1625 "sched_scan for initial scans (normal_scans=%d)",
1626 wpa_s->normal_scans);
1627 return -1;
1628 }
1629
1630 os_memset(&params, 0, sizeof(params));
1631
1632 /* If we can't allocate space for the filters, we just don't filter */
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -08001633 params.filter_ssids = os_calloc(wpa_s->max_match_sets,
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001634 sizeof(struct wpa_driver_scan_filter));
1635
1636 prev_state = wpa_s->wpa_state;
1637 if (wpa_s->wpa_state == WPA_DISCONNECTED ||
1638 wpa_s->wpa_state == WPA_INACTIVE)
1639 wpa_supplicant_set_state(wpa_s, WPA_SCANNING);
1640
Dmitry Shmidt04949592012-07-19 12:16:46 -07001641 if (wpa_s->autoscan_params != NULL) {
1642 scan_params = wpa_s->autoscan_params;
1643 goto scan;
1644 }
1645
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001646 /* Find the starting point from which to continue scanning */
1647 ssid = wpa_s->conf->ssid;
1648 if (wpa_s->prev_sched_ssid) {
1649 while (ssid) {
1650 if (ssid == wpa_s->prev_sched_ssid) {
1651 ssid = ssid->next;
1652 break;
1653 }
1654 ssid = ssid->next;
1655 }
1656 }
1657
1658 if (!ssid || !wpa_s->prev_sched_ssid) {
1659 wpa_dbg(wpa_s, MSG_DEBUG, "Beginning of SSID list");
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001660 wpa_s->sched_scan_timeout = max_sched_scan_ssids * 2;
1661 wpa_s->first_sched_scan = 1;
1662 ssid = wpa_s->conf->ssid;
1663 wpa_s->prev_sched_ssid = ssid;
1664 }
1665
1666 if (wildcard) {
1667 wpa_dbg(wpa_s, MSG_DEBUG, "Add wildcard SSID to sched_scan");
1668 params.num_ssids++;
1669 }
1670
1671 while (ssid) {
Dmitry Shmidt04949592012-07-19 12:16:46 -07001672 if (wpas_network_disabled(wpa_s, ssid))
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001673 goto next;
1674
1675 if (params.num_filter_ssids < wpa_s->max_match_sets &&
1676 params.filter_ssids && ssid->ssid && ssid->ssid_len) {
1677 wpa_dbg(wpa_s, MSG_DEBUG, "add to filter ssid: %s",
1678 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
1679 os_memcpy(params.filter_ssids[params.num_filter_ssids].ssid,
1680 ssid->ssid, ssid->ssid_len);
1681 params.filter_ssids[params.num_filter_ssids].ssid_len =
1682 ssid->ssid_len;
1683 params.num_filter_ssids++;
1684 } else if (params.filter_ssids && ssid->ssid && ssid->ssid_len)
1685 {
1686 wpa_dbg(wpa_s, MSG_DEBUG, "Not enough room for SSID "
1687 "filter for sched_scan - drop filter");
1688 os_free(params.filter_ssids);
1689 params.filter_ssids = NULL;
1690 params.num_filter_ssids = 0;
1691 }
1692
1693 if (ssid->scan_ssid && ssid->ssid && ssid->ssid_len) {
1694 if (params.num_ssids == max_sched_scan_ssids)
1695 break; /* only room for broadcast SSID */
1696 wpa_dbg(wpa_s, MSG_DEBUG,
1697 "add to active scan ssid: %s",
1698 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
1699 params.ssids[params.num_ssids].ssid =
1700 ssid->ssid;
1701 params.ssids[params.num_ssids].ssid_len =
1702 ssid->ssid_len;
1703 params.num_ssids++;
1704 if (params.num_ssids >= max_sched_scan_ssids) {
1705 wpa_s->prev_sched_ssid = ssid;
Dmitry Shmidt04949592012-07-19 12:16:46 -07001706 do {
1707 ssid = ssid->next;
1708 } while (ssid &&
1709 (wpas_network_disabled(wpa_s, ssid) ||
1710 !ssid->scan_ssid));
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001711 break;
1712 }
1713 }
1714
1715 next:
1716 wpa_s->prev_sched_ssid = ssid;
1717 ssid = ssid->next;
1718 }
1719
1720 if (params.num_filter_ssids == 0) {
1721 os_free(params.filter_ssids);
1722 params.filter_ssids = NULL;
1723 }
1724
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001725 extra_ie = wpa_supplicant_extra_ies(wpa_s);
1726 if (extra_ie) {
1727 params.extra_ies = wpabuf_head(extra_ie);
1728 params.extra_ies_len = wpabuf_len(extra_ie);
1729 }
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001730
Dmitry Shmidt18463232014-01-24 12:29:41 -08001731 if (wpa_s->conf->filter_rssi)
1732 params.filter_rssi = wpa_s->conf->filter_rssi;
1733
Dmitry Shmidt661b4f72014-09-29 14:58:27 -07001734 /* See if user specified frequencies. If so, scan only those. */
1735 if (wpa_s->conf->freq_list && !params.freqs) {
1736 wpa_dbg(wpa_s, MSG_DEBUG,
1737 "Optimize scan based on conf->freq_list");
1738 int_array_concat(&params.freqs, wpa_s->conf->freq_list);
1739 }
1740
Hai Shalomce48b4a2018-09-05 11:41:35 -07001741#ifdef CONFIG_MBO
1742 if (wpa_s->enable_oce & OCE_STA)
1743 params.oce_scan = 1;
1744#endif /* CONFIG_MBO */
1745
Dmitry Shmidt04949592012-07-19 12:16:46 -07001746 scan_params = &params;
1747
1748scan:
Dmitry Shmidtd7ff03d2015-12-04 14:49:35 -08001749 wpa_s->sched_scan_timed_out = 0;
1750
1751 /*
1752 * We cannot support multiple scan plans if the scan request includes
1753 * too many SSID's, so in this case use only the last scan plan and make
1754 * it run infinitely. It will be stopped by the timeout.
1755 */
1756 if (wpa_s->sched_scan_plans_num == 1 ||
1757 (wpa_s->sched_scan_plans_num && !ssid && wpa_s->first_sched_scan)) {
1758 params.sched_scan_plans = wpa_s->sched_scan_plans;
1759 params.sched_scan_plans_num = wpa_s->sched_scan_plans_num;
1760 } else if (wpa_s->sched_scan_plans_num > 1) {
1761 wpa_dbg(wpa_s, MSG_DEBUG,
1762 "Too many SSIDs. Default to using single scheduled_scan plan");
1763 params.sched_scan_plans =
1764 &wpa_s->sched_scan_plans[wpa_s->sched_scan_plans_num -
1765 1];
1766 params.sched_scan_plans_num = 1;
1767 } else {
1768 if (wpa_s->conf->sched_scan_interval)
1769 scan_plan.interval = wpa_s->conf->sched_scan_interval;
1770 else
1771 scan_plan.interval = 10;
1772
1773 if (scan_plan.interval > wpa_s->max_sched_scan_plan_interval) {
1774 wpa_printf(MSG_WARNING,
1775 "Scan interval too long(%u), use the maximum allowed(%u)",
1776 scan_plan.interval,
1777 wpa_s->max_sched_scan_plan_interval);
1778 scan_plan.interval =
1779 wpa_s->max_sched_scan_plan_interval;
1780 }
1781
1782 scan_plan.iterations = 0;
1783 params.sched_scan_plans = &scan_plan;
1784 params.sched_scan_plans_num = 1;
1785 }
1786
Dmitry Shmidtd2986c22017-10-23 14:22:09 -07001787 params.sched_scan_start_delay = wpa_s->conf->sched_scan_start_delay;
1788
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001789 if (ssid || !wpa_s->first_sched_scan) {
1790 wpa_dbg(wpa_s, MSG_DEBUG,
Dmitry Shmidtd2986c22017-10-23 14:22:09 -07001791 "Starting sched scan after %u seconds: interval %u timeout %d",
1792 params.sched_scan_start_delay,
Dmitry Shmidtd7ff03d2015-12-04 14:49:35 -08001793 params.sched_scan_plans[0].interval,
1794 wpa_s->sched_scan_timeout);
Dmitry Shmidt04949592012-07-19 12:16:46 -07001795 } else {
Dmitry Shmidtd2986c22017-10-23 14:22:09 -07001796 wpa_dbg(wpa_s, MSG_DEBUG,
1797 "Starting sched scan after %u seconds (no timeout)",
1798 params.sched_scan_start_delay);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001799 }
1800
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001801 wpa_setband_scan_freqs(wpa_s, scan_params);
1802
Dmitry Shmidtabb90a32016-12-05 15:34:39 -08001803 if ((wpa_s->mac_addr_rand_enable & MAC_ADDR_RAND_SCHED_SCAN) &&
Hai Shalomc3565922019-10-28 11:58:20 -07001804 wpa_s->wpa_state <= WPA_SCANNING)
1805 wpa_setup_mac_addr_rand_params(&params,
1806 wpa_s->mac_addr_sched_scan);
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -08001807
Dmitry Shmidtebd93af2017-02-21 13:40:44 -08001808 wpa_scan_set_relative_rssi_params(wpa_s, scan_params);
1809
Dmitry Shmidtd7ff03d2015-12-04 14:49:35 -08001810 ret = wpa_supplicant_start_sched_scan(wpa_s, scan_params);
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001811 wpabuf_free(extra_ie);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001812 os_free(params.filter_ssids);
Hai Shalomc3565922019-10-28 11:58:20 -07001813 os_free(params.mac_addr);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001814 if (ret) {
1815 wpa_msg(wpa_s, MSG_WARNING, "Failed to initiate sched scan");
1816 if (prev_state != wpa_s->wpa_state)
1817 wpa_supplicant_set_state(wpa_s, prev_state);
1818 return ret;
1819 }
1820
1821 /* If we have more SSIDs to scan, add a timeout so we scan them too */
1822 if (ssid || !wpa_s->first_sched_scan) {
1823 wpa_s->sched_scan_timed_out = 0;
1824 eloop_register_timeout(wpa_s->sched_scan_timeout, 0,
1825 wpa_supplicant_sched_scan_timeout,
1826 wpa_s, NULL);
1827 wpa_s->first_sched_scan = 0;
1828 wpa_s->sched_scan_timeout /= 2;
Dmitry Shmidtd7ff03d2015-12-04 14:49:35 -08001829 params.sched_scan_plans[0].interval *= 2;
1830 if ((unsigned int) wpa_s->sched_scan_timeout <
1831 params.sched_scan_plans[0].interval ||
1832 params.sched_scan_plans[0].interval >
1833 wpa_s->max_sched_scan_plan_interval) {
1834 params.sched_scan_plans[0].interval = 10;
Dmitry Shmidt2f023192013-03-12 12:44:17 -07001835 wpa_s->sched_scan_timeout = max_sched_scan_ssids * 2;
1836 }
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001837 }
1838
Dmitry Shmidt2f023192013-03-12 12:44:17 -07001839 /* If there is no more ssids, start next time from the beginning */
1840 if (!ssid)
1841 wpa_s->prev_sched_ssid = NULL;
1842
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001843 return 0;
1844}
1845
1846
1847/**
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001848 * wpa_supplicant_cancel_scan - Cancel a scheduled scan request
1849 * @wpa_s: Pointer to wpa_supplicant data
1850 *
1851 * This function is used to cancel a scan request scheduled with
1852 * wpa_supplicant_req_scan().
1853 */
1854void wpa_supplicant_cancel_scan(struct wpa_supplicant *wpa_s)
1855{
1856 wpa_dbg(wpa_s, MSG_DEBUG, "Cancelling scan request");
1857 eloop_cancel_timeout(wpa_supplicant_scan, wpa_s, NULL);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001858}
1859
1860
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001861/**
Dmitry Shmidtc2ebb4b2013-07-24 12:57:51 -07001862 * wpa_supplicant_cancel_delayed_sched_scan - Stop a delayed scheduled scan
1863 * @wpa_s: Pointer to wpa_supplicant data
1864 *
1865 * This function is used to stop a delayed scheduled scan.
1866 */
1867void wpa_supplicant_cancel_delayed_sched_scan(struct wpa_supplicant *wpa_s)
1868{
1869 if (!wpa_s->sched_scan_supported)
1870 return;
1871
1872 wpa_dbg(wpa_s, MSG_DEBUG, "Cancelling delayed sched scan");
1873 eloop_cancel_timeout(wpa_supplicant_delayed_sched_scan_timeout,
1874 wpa_s, NULL);
1875}
1876
1877
1878/**
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001879 * wpa_supplicant_cancel_sched_scan - Stop running scheduled scans
1880 * @wpa_s: Pointer to wpa_supplicant data
1881 *
1882 * This function is used to stop a periodic scheduled scan.
1883 */
1884void wpa_supplicant_cancel_sched_scan(struct wpa_supplicant *wpa_s)
1885{
1886 if (!wpa_s->sched_scanning)
1887 return;
1888
Dmitry Shmidt9839ecd2016-11-07 11:05:47 -08001889 if (wpa_s->sched_scanning)
1890 wpa_s->sched_scan_stop_req = 1;
1891
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001892 wpa_dbg(wpa_s, MSG_DEBUG, "Cancelling sched scan");
1893 eloop_cancel_timeout(wpa_supplicant_sched_scan_timeout, wpa_s, NULL);
1894 wpa_supplicant_stop_sched_scan(wpa_s);
1895}
1896
1897
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001898/**
1899 * wpa_supplicant_notify_scanning - Indicate possible scan state change
1900 * @wpa_s: Pointer to wpa_supplicant data
1901 * @scanning: Whether scanning is currently in progress
1902 *
1903 * This function is to generate scanning notifycations. It is called whenever
1904 * there may have been a change in scanning (scan started, completed, stopped).
1905 * wpas_notify_scanning() is called whenever the scanning state changed from the
1906 * previously notified state.
1907 */
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001908void wpa_supplicant_notify_scanning(struct wpa_supplicant *wpa_s,
1909 int scanning)
1910{
1911 if (wpa_s->scanning != scanning) {
1912 wpa_s->scanning = scanning;
1913 wpas_notify_scanning(wpa_s);
1914 }
1915}
1916
1917
1918static int wpa_scan_get_max_rate(const struct wpa_scan_res *res)
1919{
1920 int rate = 0;
1921 const u8 *ie;
1922 int i;
1923
1924 ie = wpa_scan_get_ie(res, WLAN_EID_SUPP_RATES);
1925 for (i = 0; ie && i < ie[1]; i++) {
1926 if ((ie[i + 2] & 0x7f) > rate)
1927 rate = ie[i + 2] & 0x7f;
1928 }
1929
1930 ie = wpa_scan_get_ie(res, WLAN_EID_EXT_SUPP_RATES);
1931 for (i = 0; ie && i < ie[1]; i++) {
1932 if ((ie[i + 2] & 0x7f) > rate)
1933 rate = ie[i + 2] & 0x7f;
1934 }
1935
1936 return rate;
1937}
1938
1939
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001940/**
1941 * wpa_scan_get_ie - Fetch a specified information element from a scan result
1942 * @res: Scan result entry
1943 * @ie: Information element identitifier (WLAN_EID_*)
1944 * Returns: Pointer to the information element (id field) or %NULL if not found
1945 *
1946 * This function returns the first matching information element in the scan
1947 * result.
1948 */
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001949const u8 * wpa_scan_get_ie(const struct wpa_scan_res *res, u8 ie)
1950{
Dmitry Shmidt9839ecd2016-11-07 11:05:47 -08001951 size_t ie_len = res->ie_len;
1952
1953 /* Use the Beacon frame IEs if res->ie_len is not available */
1954 if (!ie_len)
1955 ie_len = res->beacon_ie_len;
1956
1957 return get_ie((const u8 *) (res + 1), ie_len, ie);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001958}
1959
1960
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001961/**
1962 * wpa_scan_get_vendor_ie - Fetch vendor information element from a scan result
1963 * @res: Scan result entry
1964 * @vendor_type: Vendor type (four octets starting the IE payload)
1965 * Returns: Pointer to the information element (id field) or %NULL if not found
1966 *
1967 * This function returns the first matching information element in the scan
1968 * result.
1969 */
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001970const u8 * wpa_scan_get_vendor_ie(const struct wpa_scan_res *res,
1971 u32 vendor_type)
1972{
Hai Shalom60840252021-02-19 19:02:11 -08001973 const u8 *ies;
1974 const struct element *elem;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001975
Hai Shalom60840252021-02-19 19:02:11 -08001976 ies = (const u8 *) (res + 1);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001977
Hai Shalom60840252021-02-19 19:02:11 -08001978 for_each_element_id(elem, WLAN_EID_VENDOR_SPECIFIC, ies, res->ie_len) {
1979 if (elem->datalen >= 4 &&
1980 vendor_type == WPA_GET_BE32(elem->data))
1981 return &elem->id;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001982 }
1983
1984 return NULL;
1985}
1986
1987
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001988/**
Dmitry Shmidt96571392013-10-14 12:54:46 -07001989 * wpa_scan_get_vendor_ie_beacon - Fetch vendor information from a scan result
1990 * @res: Scan result entry
1991 * @vendor_type: Vendor type (four octets starting the IE payload)
1992 * Returns: Pointer to the information element (id field) or %NULL if not found
1993 *
1994 * This function returns the first matching information element in the scan
1995 * result.
1996 *
1997 * This function is like wpa_scan_get_vendor_ie(), but uses IE buffer only
1998 * from Beacon frames instead of either Beacon or Probe Response frames.
1999 */
2000const u8 * wpa_scan_get_vendor_ie_beacon(const struct wpa_scan_res *res,
2001 u32 vendor_type)
2002{
Hai Shalom60840252021-02-19 19:02:11 -08002003 const u8 *ies;
2004 const struct element *elem;
Dmitry Shmidt96571392013-10-14 12:54:46 -07002005
2006 if (res->beacon_ie_len == 0)
2007 return NULL;
2008
Hai Shalom60840252021-02-19 19:02:11 -08002009 ies = (const u8 *) (res + 1);
2010 ies += res->ie_len;
Dmitry Shmidt96571392013-10-14 12:54:46 -07002011
Hai Shalom60840252021-02-19 19:02:11 -08002012 for_each_element_id(elem, WLAN_EID_VENDOR_SPECIFIC, ies,
2013 res->beacon_ie_len) {
2014 if (elem->datalen >= 4 &&
2015 vendor_type == WPA_GET_BE32(elem->data))
2016 return &elem->id;
Dmitry Shmidt96571392013-10-14 12:54:46 -07002017 }
2018
2019 return NULL;
2020}
2021
2022
2023/**
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08002024 * wpa_scan_get_vendor_ie_multi - Fetch vendor IE data from a scan result
2025 * @res: Scan result entry
2026 * @vendor_type: Vendor type (four octets starting the IE payload)
2027 * Returns: Pointer to the information element payload or %NULL if not found
2028 *
2029 * This function returns concatenated payload of possibly fragmented vendor
2030 * specific information elements in the scan result. The caller is responsible
2031 * for freeing the returned buffer.
2032 */
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002033struct wpabuf * wpa_scan_get_vendor_ie_multi(const struct wpa_scan_res *res,
2034 u32 vendor_type)
2035{
2036 struct wpabuf *buf;
2037 const u8 *end, *pos;
2038
2039 buf = wpabuf_alloc(res->ie_len);
2040 if (buf == NULL)
2041 return NULL;
2042
2043 pos = (const u8 *) (res + 1);
2044 end = pos + res->ie_len;
2045
Dmitry Shmidtd80a4012015-11-05 16:35:40 -08002046 while (end - pos > 1) {
Hai Shalom60840252021-02-19 19:02:11 -08002047 u8 ie, len;
2048
2049 ie = pos[0];
2050 len = pos[1];
2051 if (len > end - pos - 2)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002052 break;
Hai Shalom60840252021-02-19 19:02:11 -08002053 pos += 2;
2054 if (ie == WLAN_EID_VENDOR_SPECIFIC && len >= 4 &&
2055 vendor_type == WPA_GET_BE32(pos))
2056 wpabuf_put_data(buf, pos + 4, len - 4);
2057 pos += len;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002058 }
2059
2060 if (wpabuf_len(buf) == 0) {
2061 wpabuf_free(buf);
2062 buf = NULL;
2063 }
2064
2065 return buf;
2066}
2067
2068
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002069/* Compare function for sorting scan results. Return >0 if @b is considered
2070 * better. */
2071static int wpa_scan_result_compar(const void *a, const void *b)
2072{
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002073#define MIN(a,b) a < b ? a : b
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002074 struct wpa_scan_res **_wa = (void *) a;
2075 struct wpa_scan_res **_wb = (void *) b;
2076 struct wpa_scan_res *wa = *_wa;
2077 struct wpa_scan_res *wb = *_wb;
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002078 int wpa_a, wpa_b;
2079 int snr_a, snr_b, snr_a_full, snr_b_full;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002080
2081 /* WPA/WPA2 support preferred */
2082 wpa_a = wpa_scan_get_vendor_ie(wa, WPA_IE_VENDOR_TYPE) != NULL ||
2083 wpa_scan_get_ie(wa, WLAN_EID_RSN) != NULL;
2084 wpa_b = wpa_scan_get_vendor_ie(wb, WPA_IE_VENDOR_TYPE) != NULL ||
2085 wpa_scan_get_ie(wb, WLAN_EID_RSN) != NULL;
2086
2087 if (wpa_b && !wpa_a)
2088 return 1;
2089 if (!wpa_b && wpa_a)
2090 return -1;
2091
2092 /* privacy support preferred */
2093 if ((wa->caps & IEEE80211_CAP_PRIVACY) == 0 &&
2094 (wb->caps & IEEE80211_CAP_PRIVACY))
2095 return 1;
2096 if ((wa->caps & IEEE80211_CAP_PRIVACY) &&
2097 (wb->caps & IEEE80211_CAP_PRIVACY) == 0)
2098 return -1;
2099
Dmitry Shmidt216983b2015-02-06 10:50:36 -08002100 if (wa->flags & wb->flags & WPA_SCAN_LEVEL_DBM) {
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002101 snr_a_full = wa->snr;
2102 snr_a = MIN(wa->snr, GREAT_SNR);
2103 snr_b_full = wb->snr;
Dmitry Shmidtd80a4012015-11-05 16:35:40 -08002104 snr_b = MIN(wb->snr, GREAT_SNR);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002105 } else {
Dmitry Shmidt216983b2015-02-06 10:50:36 -08002106 /* Level is not in dBm, so we can't calculate
2107 * SNR. Just use raw level (units unknown). */
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002108 snr_a = snr_a_full = wa->level;
2109 snr_b = snr_b_full = wb->level;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002110 }
2111
Hai Shaloma20dcd72022-02-04 13:43:00 -08002112 /* If SNR is close, decide by max rate or frequency band. For cases
2113 * involving the 6 GHz band, use the throughput estimate irrespective
2114 * of the SNR difference since the LPI/VLP rules may result in
2115 * significant differences in SNR for cases where the estimated
2116 * throughput can be considerably higher with the lower SNR. */
2117 if (snr_a && snr_b && (abs(snr_b - snr_a) < 7 ||
2118 is_6ghz_freq(wa->freq) ||
2119 is_6ghz_freq(wb->freq))) {
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002120 if (wa->est_throughput != wb->est_throughput)
Hai Shalom021b0b52019-04-10 11:17:58 -07002121 return (int) wb->est_throughput -
2122 (int) wa->est_throughput;
Dmitry Shmidtebd93af2017-02-21 13:40:44 -08002123 }
2124 if ((snr_a && snr_b && abs(snr_b - snr_a) < 5) ||
2125 (wa->qual && wb->qual && abs(wb->qual - wa->qual) < 10)) {
Hai Shaloma20dcd72022-02-04 13:43:00 -08002126 if (is_6ghz_freq(wa->freq) ^ is_6ghz_freq(wb->freq))
2127 return is_6ghz_freq(wa->freq) ? -1 : 1;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002128 if (IS_5GHZ(wa->freq) ^ IS_5GHZ(wb->freq))
2129 return IS_5GHZ(wa->freq) ? -1 : 1;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002130 }
2131
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002132 /* all things being equal, use SNR; if SNRs are
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002133 * identical, use quality values since some drivers may only report
2134 * that value and leave the signal level zero */
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002135 if (snr_b_full == snr_a_full)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002136 return wb->qual - wa->qual;
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002137 return snr_b_full - snr_a_full;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002138#undef MIN
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002139}
2140
2141
2142#ifdef CONFIG_WPS
2143/* Compare function for sorting scan results when searching a WPS AP for
2144 * provisioning. Return >0 if @b is considered better. */
2145static int wpa_scan_result_wps_compar(const void *a, const void *b)
2146{
2147 struct wpa_scan_res **_wa = (void *) a;
2148 struct wpa_scan_res **_wb = (void *) b;
2149 struct wpa_scan_res *wa = *_wa;
2150 struct wpa_scan_res *wb = *_wb;
2151 int uses_wps_a, uses_wps_b;
2152 struct wpabuf *wps_a, *wps_b;
2153 int res;
2154
2155 /* Optimization - check WPS IE existence before allocated memory and
2156 * doing full reassembly. */
2157 uses_wps_a = wpa_scan_get_vendor_ie(wa, WPS_IE_VENDOR_TYPE) != NULL;
2158 uses_wps_b = wpa_scan_get_vendor_ie(wb, WPS_IE_VENDOR_TYPE) != NULL;
2159 if (uses_wps_a && !uses_wps_b)
2160 return -1;
2161 if (!uses_wps_a && uses_wps_b)
2162 return 1;
2163
2164 if (uses_wps_a && uses_wps_b) {
2165 wps_a = wpa_scan_get_vendor_ie_multi(wa, WPS_IE_VENDOR_TYPE);
2166 wps_b = wpa_scan_get_vendor_ie_multi(wb, WPS_IE_VENDOR_TYPE);
2167 res = wps_ap_priority_compar(wps_a, wps_b);
2168 wpabuf_free(wps_a);
2169 wpabuf_free(wps_b);
2170 if (res)
2171 return res;
2172 }
2173
2174 /*
2175 * Do not use current AP security policy as a sorting criteria during
2176 * WPS provisioning step since the AP may get reconfigured at the
2177 * completion of provisioning.
2178 */
2179
2180 /* all things being equal, use signal level; if signal levels are
2181 * identical, use quality values since some drivers may only report
2182 * that value and leave the signal level zero */
2183 if (wb->level == wa->level)
2184 return wb->qual - wa->qual;
2185 return wb->level - wa->level;
2186}
2187#endif /* CONFIG_WPS */
2188
2189
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002190static void dump_scan_res(struct wpa_scan_results *scan_res)
2191{
2192#ifndef CONFIG_NO_STDOUT_DEBUG
2193 size_t i;
2194
2195 if (scan_res->res == NULL || scan_res->num == 0)
2196 return;
2197
2198 wpa_printf(MSG_EXCESSIVE, "Sorted scan results");
2199
2200 for (i = 0; i < scan_res->num; i++) {
2201 struct wpa_scan_res *r = scan_res->res[i];
Dmitry Shmidt04949592012-07-19 12:16:46 -07002202 u8 *pos;
Sunil Ravia04bd252022-05-02 22:54:18 -07002203 const u8 *ssid_ie, *ssid = NULL;
2204 size_t ssid_len = 0;
2205
2206 ssid_ie = wpa_scan_get_ie(r, WLAN_EID_SSID);
2207 if (ssid_ie) {
2208 ssid = ssid_ie + 2;
2209 ssid_len = ssid_ie[1];
2210 }
2211
Dmitry Shmidt216983b2015-02-06 10:50:36 -08002212 if (r->flags & WPA_SCAN_LEVEL_DBM) {
Dmitry Shmidt216983b2015-02-06 10:50:36 -08002213 int noise_valid = !(r->flags & WPA_SCAN_NOISE_INVALID);
2214
Sunil Ravia04bd252022-05-02 22:54:18 -07002215 wpa_printf(MSG_EXCESSIVE, MACSTR
2216 " ssid=%s freq=%d qual=%d noise=%d%s level=%d snr=%d%s flags=0x%x age=%u est=%u",
2217 MAC2STR(r->bssid),
2218 wpa_ssid_txt(ssid, ssid_len),
2219 r->freq, r->qual,
Dmitry Shmidt216983b2015-02-06 10:50:36 -08002220 r->noise, noise_valid ? "" : "~", r->level,
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002221 r->snr, r->snr >= GREAT_SNR ? "*" : "",
2222 r->flags,
2223 r->age, r->est_throughput);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002224 } else {
Sunil Ravia04bd252022-05-02 22:54:18 -07002225 wpa_printf(MSG_EXCESSIVE, MACSTR
2226 " ssid=%s freq=%d qual=%d noise=%d level=%d flags=0x%x age=%u est=%u",
2227 MAC2STR(r->bssid),
2228 wpa_ssid_txt(ssid, ssid_len),
2229 r->freq, r->qual,
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002230 r->noise, r->level, r->flags, r->age,
2231 r->est_throughput);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002232 }
Dmitry Shmidt04949592012-07-19 12:16:46 -07002233 pos = (u8 *) (r + 1);
2234 if (r->ie_len)
2235 wpa_hexdump(MSG_EXCESSIVE, "IEs", pos, r->ie_len);
2236 pos += r->ie_len;
2237 if (r->beacon_ie_len)
2238 wpa_hexdump(MSG_EXCESSIVE, "Beacon IEs",
2239 pos, r->beacon_ie_len);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002240 }
2241#endif /* CONFIG_NO_STDOUT_DEBUG */
2242}
2243
2244
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08002245/**
2246 * wpa_supplicant_filter_bssid_match - Is the specified BSSID allowed
2247 * @wpa_s: Pointer to wpa_supplicant data
2248 * @bssid: BSSID to check
2249 * Returns: 0 if the BSSID is filtered or 1 if not
2250 *
2251 * This function is used to filter out specific BSSIDs from scan reslts mainly
2252 * for testing purposes (SET bssid_filter ctrl_iface command).
2253 */
Dmitry Shmidt04949592012-07-19 12:16:46 -07002254int wpa_supplicant_filter_bssid_match(struct wpa_supplicant *wpa_s,
2255 const u8 *bssid)
2256{
2257 size_t i;
2258
2259 if (wpa_s->bssid_filter == NULL)
2260 return 1;
2261
2262 for (i = 0; i < wpa_s->bssid_filter_count; i++) {
2263 if (os_memcmp(wpa_s->bssid_filter + i * ETH_ALEN, bssid,
2264 ETH_ALEN) == 0)
2265 return 1;
2266 }
2267
2268 return 0;
2269}
2270
2271
Dmitry Shmidt849734c2016-05-27 09:59:01 -07002272void filter_scan_res(struct wpa_supplicant *wpa_s,
2273 struct wpa_scan_results *res)
Dmitry Shmidt04949592012-07-19 12:16:46 -07002274{
2275 size_t i, j;
2276
2277 if (wpa_s->bssid_filter == NULL)
2278 return;
2279
2280 for (i = 0, j = 0; i < res->num; i++) {
2281 if (wpa_supplicant_filter_bssid_match(wpa_s,
2282 res->res[i]->bssid)) {
2283 res->res[j++] = res->res[i];
2284 } else {
2285 os_free(res->res[i]);
2286 res->res[i] = NULL;
2287 }
2288 }
2289
2290 if (res->num != j) {
2291 wpa_printf(MSG_DEBUG, "Filtered out %d scan results",
2292 (int) (res->num - j));
2293 res->num = j;
2294 }
2295}
2296
2297
Dmitry Shmidt849734c2016-05-27 09:59:01 -07002298void scan_snr(struct wpa_scan_res *res)
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002299{
2300 if (res->flags & WPA_SCAN_NOISE_INVALID) {
Hai Shaloma20dcd72022-02-04 13:43:00 -08002301 res->noise = is_6ghz_freq(res->freq) ?
2302 DEFAULT_NOISE_FLOOR_6GHZ :
2303 (IS_5GHZ(res->freq) ?
2304 DEFAULT_NOISE_FLOOR_5GHZ : DEFAULT_NOISE_FLOOR_2GHZ);
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002305 }
2306
2307 if (res->flags & WPA_SCAN_LEVEL_DBM) {
2308 res->snr = res->level - res->noise;
2309 } else {
2310 /* Level is not in dBm, so we can't calculate
2311 * SNR. Just use raw level (units unknown). */
2312 res->snr = res->level;
2313 }
2314}
2315
2316
Hai Shalom899fcc72020-10-19 14:38:18 -07002317/* Minimum SNR required to achieve a certain bitrate. */
2318struct minsnr_bitrate_entry {
2319 int minsnr;
2320 unsigned int bitrate; /* in Mbps */
2321};
2322
2323/* VHT needs to be enabled in order to achieve MCS8 and MCS9 rates. */
2324static const int vht_mcs = 8;
2325
2326static const struct minsnr_bitrate_entry vht20_table[] = {
2327 { 0, 0 },
2328 { 2, 6500 }, /* HT20 MCS0 */
2329 { 5, 13000 }, /* HT20 MCS1 */
2330 { 9, 19500 }, /* HT20 MCS2 */
2331 { 11, 26000 }, /* HT20 MCS3 */
2332 { 15, 39000 }, /* HT20 MCS4 */
2333 { 18, 52000 }, /* HT20 MCS5 */
2334 { 20, 58500 }, /* HT20 MCS6 */
2335 { 25, 65000 }, /* HT20 MCS7 */
2336 { 29, 78000 }, /* VHT20 MCS8 */
2337 { -1, 78000 } /* SNR > 29 */
2338};
2339
2340static const struct minsnr_bitrate_entry vht40_table[] = {
2341 { 0, 0 },
2342 { 5, 13500 }, /* HT40 MCS0 */
2343 { 8, 27000 }, /* HT40 MCS1 */
2344 { 12, 40500 }, /* HT40 MCS2 */
2345 { 14, 54000 }, /* HT40 MCS3 */
2346 { 18, 81000 }, /* HT40 MCS4 */
2347 { 21, 108000 }, /* HT40 MCS5 */
2348 { 23, 121500 }, /* HT40 MCS6 */
2349 { 28, 135000 }, /* HT40 MCS7 */
2350 { 32, 162000 }, /* VHT40 MCS8 */
2351 { 34, 180000 }, /* VHT40 MCS9 */
2352 { -1, 180000 } /* SNR > 34 */
2353};
2354
2355static const struct minsnr_bitrate_entry vht80_table[] = {
2356 { 0, 0 },
2357 { 8, 29300 }, /* VHT80 MCS0 */
2358 { 11, 58500 }, /* VHT80 MCS1 */
2359 { 15, 87800 }, /* VHT80 MCS2 */
2360 { 17, 117000 }, /* VHT80 MCS3 */
2361 { 21, 175500 }, /* VHT80 MCS4 */
2362 { 24, 234000 }, /* VHT80 MCS5 */
2363 { 26, 263300 }, /* VHT80 MCS6 */
2364 { 31, 292500 }, /* VHT80 MCS7 */
2365 { 35, 351000 }, /* VHT80 MCS8 */
2366 { 37, 390000 }, /* VHT80 MCS9 */
2367 { -1, 390000 } /* SNR > 37 */
2368};
2369
2370
Hai Shaloma20dcd72022-02-04 13:43:00 -08002371static const struct minsnr_bitrate_entry vht160_table[] = {
2372 { 0, 0 },
2373 { 11, 58500 }, /* VHT160 MCS0 */
2374 { 14, 117000 }, /* VHT160 MCS1 */
2375 { 18, 175500 }, /* VHT160 MCS2 */
2376 { 20, 234000 }, /* VHT160 MCS3 */
2377 { 24, 351000 }, /* VHT160 MCS4 */
2378 { 27, 468000 }, /* VHT160 MCS5 */
2379 { 29, 526500 }, /* VHT160 MCS6 */
2380 { 34, 585000 }, /* VHT160 MCS7 */
2381 { 38, 702000 }, /* VHT160 MCS8 */
2382 { 40, 780000 }, /* VHT160 MCS9 */
2383 { -1, 780000 } /* SNR > 37 */
2384};
2385
2386
2387static const struct minsnr_bitrate_entry he20_table[] = {
2388 { 0, 0 },
2389 { 2, 8600 }, /* HE20 MCS0 */
2390 { 5, 17200 }, /* HE20 MCS1 */
2391 { 9, 25800 }, /* HE20 MCS2 */
2392 { 11, 34400 }, /* HE20 MCS3 */
2393 { 15, 51600 }, /* HE20 MCS4 */
2394 { 18, 68800 }, /* HE20 MCS5 */
2395 { 20, 77400 }, /* HE20 MCS6 */
2396 { 25, 86000 }, /* HE20 MCS7 */
2397 { 29, 103200 }, /* HE20 MCS8 */
2398 { 31, 114700 }, /* HE20 MCS9 */
2399 { 34, 129000 }, /* HE20 MCS10 */
2400 { 36, 143400 }, /* HE20 MCS11 */
2401 { -1, 143400 } /* SNR > 29 */
2402};
2403
2404static const struct minsnr_bitrate_entry he40_table[] = {
2405 { 0, 0 },
2406 { 5, 17200 }, /* HE40 MCS0 */
2407 { 8, 34400 }, /* HE40 MCS1 */
2408 { 12, 51600 }, /* HE40 MCS2 */
2409 { 14, 68800 }, /* HE40 MCS3 */
2410 { 18, 103200 }, /* HE40 MCS4 */
2411 { 21, 137600 }, /* HE40 MCS5 */
2412 { 23, 154900 }, /* HE40 MCS6 */
2413 { 28, 172100 }, /* HE40 MCS7 */
2414 { 32, 206500 }, /* HE40 MCS8 */
2415 { 34, 229400 }, /* HE40 MCS9 */
2416 { 37, 258100 }, /* HE40 MCS10 */
2417 { 39, 286800 }, /* HE40 MCS11 */
2418 { -1, 286800 } /* SNR > 34 */
2419};
2420
2421static const struct minsnr_bitrate_entry he80_table[] = {
2422 { 0, 0 },
2423 { 8, 36000 }, /* HE80 MCS0 */
2424 { 11, 72100 }, /* HE80 MCS1 */
2425 { 15, 108100 }, /* HE80 MCS2 */
2426 { 17, 144100 }, /* HE80 MCS3 */
2427 { 21, 216200 }, /* HE80 MCS4 */
2428 { 24, 288200 }, /* HE80 MCS5 */
2429 { 26, 324300 }, /* HE80 MCS6 */
2430 { 31, 360300 }, /* HE80 MCS7 */
2431 { 35, 432400 }, /* HE80 MCS8 */
2432 { 37, 480400 }, /* HE80 MCS9 */
2433 { 40, 540400 }, /* HE80 MCS10 */
2434 { 42, 600500 }, /* HE80 MCS11 */
2435 { -1, 600500 } /* SNR > 37 */
2436};
2437
2438
2439static const struct minsnr_bitrate_entry he160_table[] = {
2440 { 0, 0 },
2441 { 11, 72100 }, /* HE160 MCS0 */
2442 { 14, 144100 }, /* HE160 MCS1 */
2443 { 18, 216200 }, /* HE160 MCS2 */
2444 { 20, 288200 }, /* HE160 MCS3 */
2445 { 24, 432400 }, /* HE160 MCS4 */
2446 { 27, 576500 }, /* HE160 MCS5 */
2447 { 29, 648500 }, /* HE160 MCS6 */
2448 { 34, 720600 }, /* HE160 MCS7 */
2449 { 38, 864700 }, /* HE160 MCS8 */
2450 { 40, 960800 }, /* HE160 MCS9 */
2451 { 43, 1080900 }, /* HE160 MCS10 */
2452 { 45, 1201000 }, /* HE160 MCS11 */
2453 { -1, 1201000 } /* SNR > 37 */
2454};
2455
2456
Hai Shalomfdcde762020-04-02 11:19:20 -07002457static unsigned int interpolate_rate(int snr, int snr0, int snr1,
2458 int rate0, int rate1)
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002459{
Hai Shalomfdcde762020-04-02 11:19:20 -07002460 return rate0 + (snr - snr0) * (rate1 - rate0) / (snr1 - snr0);
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002461}
2462
2463
Hai Shalom899fcc72020-10-19 14:38:18 -07002464static unsigned int max_rate(const struct minsnr_bitrate_entry table[],
2465 int snr, bool vht)
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002466{
Hai Shalom899fcc72020-10-19 14:38:18 -07002467 const struct minsnr_bitrate_entry *prev, *entry = table;
2468
2469 while ((entry->minsnr != -1) &&
2470 (snr >= entry->minsnr) &&
2471 (vht || entry - table <= vht_mcs))
2472 entry++;
2473 if (entry == table)
2474 return entry->bitrate;
2475 prev = entry - 1;
2476 if (entry->minsnr == -1 || (!vht && entry - table > vht_mcs))
2477 return prev->bitrate;
2478 return interpolate_rate(snr, prev->minsnr, entry->minsnr, prev->bitrate,
2479 entry->bitrate);
Hai Shalomfdcde762020-04-02 11:19:20 -07002480}
2481
2482
Hai Shalom899fcc72020-10-19 14:38:18 -07002483static unsigned int max_ht20_rate(int snr, bool vht)
Hai Shalomfdcde762020-04-02 11:19:20 -07002484{
Hai Shalom899fcc72020-10-19 14:38:18 -07002485 return max_rate(vht20_table, snr, vht);
2486}
2487
2488
2489static unsigned int max_ht40_rate(int snr, bool vht)
2490{
2491 return max_rate(vht40_table, snr, vht);
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002492}
2493
2494
2495static unsigned int max_vht80_rate(int snr)
2496{
Hai Shalom899fcc72020-10-19 14:38:18 -07002497 return max_rate(vht80_table, snr, 1);
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002498}
2499
Hai Shalomfdcde762020-04-02 11:19:20 -07002500
Hai Shaloma20dcd72022-02-04 13:43:00 -08002501static unsigned int max_vht160_rate(int snr)
2502{
2503 return max_rate(vht160_table, snr, 1);
2504}
2505
2506
2507static unsigned int max_he_rate(const struct minsnr_bitrate_entry table[],
2508 int snr)
2509{
2510 const struct minsnr_bitrate_entry *prev, *entry = table;
2511
2512 while (entry->minsnr != -1 && snr >= entry->minsnr)
2513 entry++;
2514 if (entry == table)
2515 return 0;
2516 prev = entry - 1;
2517 if (entry->minsnr == -1)
2518 return prev->bitrate;
2519 return interpolate_rate(snr, prev->minsnr, entry->minsnr,
2520 prev->bitrate, entry->bitrate);
2521}
2522
2523
Hai Shalomfdcde762020-04-02 11:19:20 -07002524unsigned int wpas_get_est_tpt(const struct wpa_supplicant *wpa_s,
2525 const u8 *ies, size_t ies_len, int rate,
Hai Shaloma20dcd72022-02-04 13:43:00 -08002526 int snr, int freq)
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002527{
Hai Shaloma20dcd72022-02-04 13:43:00 -08002528 struct hostapd_hw_modes *hw_mode;
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002529 unsigned int est, tmp;
Hai Shalomfdcde762020-04-02 11:19:20 -07002530 const u8 *ie;
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002531
2532 /* Limit based on estimated SNR */
2533 if (rate > 1 * 2 && snr < 1)
2534 rate = 1 * 2;
2535 else if (rate > 2 * 2 && snr < 4)
2536 rate = 2 * 2;
2537 else if (rate > 6 * 2 && snr < 5)
2538 rate = 6 * 2;
2539 else if (rate > 9 * 2 && snr < 6)
2540 rate = 9 * 2;
2541 else if (rate > 12 * 2 && snr < 7)
2542 rate = 12 * 2;
Hai Shalomfdcde762020-04-02 11:19:20 -07002543 else if (rate > 12 * 2 && snr < 8)
2544 rate = 14 * 2;
2545 else if (rate > 12 * 2 && snr < 9)
2546 rate = 16 * 2;
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002547 else if (rate > 18 * 2 && snr < 10)
2548 rate = 18 * 2;
2549 else if (rate > 24 * 2 && snr < 11)
2550 rate = 24 * 2;
Hai Shalomfdcde762020-04-02 11:19:20 -07002551 else if (rate > 24 * 2 && snr < 12)
2552 rate = 27 * 2;
2553 else if (rate > 24 * 2 && snr < 13)
2554 rate = 30 * 2;
2555 else if (rate > 24 * 2 && snr < 14)
2556 rate = 33 * 2;
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002557 else if (rate > 36 * 2 && snr < 15)
2558 rate = 36 * 2;
Hai Shalomfdcde762020-04-02 11:19:20 -07002559 else if (rate > 36 * 2 && snr < 16)
2560 rate = 39 * 2;
2561 else if (rate > 36 * 2 && snr < 17)
2562 rate = 42 * 2;
2563 else if (rate > 36 * 2 && snr < 18)
2564 rate = 45 * 2;
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002565 else if (rate > 48 * 2 && snr < 19)
2566 rate = 48 * 2;
Hai Shalomfdcde762020-04-02 11:19:20 -07002567 else if (rate > 48 * 2 && snr < 20)
2568 rate = 51 * 2;
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002569 else if (rate > 54 * 2 && snr < 21)
2570 rate = 54 * 2;
2571 est = rate * 500;
2572
Hai Shaloma20dcd72022-02-04 13:43:00 -08002573 hw_mode = get_mode_with_freq(wpa_s->hw.modes, wpa_s->hw.num_modes,
2574 freq);
2575
2576 if (hw_mode && hw_mode->ht_capab) {
Hai Shalomfdcde762020-04-02 11:19:20 -07002577 ie = get_ie(ies, ies_len, WLAN_EID_HT_CAP);
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002578 if (ie) {
Hai Shalom899fcc72020-10-19 14:38:18 -07002579 tmp = max_ht20_rate(snr, false);
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002580 if (tmp > est)
2581 est = tmp;
2582 }
2583 }
2584
Hai Shaloma20dcd72022-02-04 13:43:00 -08002585 if (hw_mode &&
2586 (hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) {
Hai Shalomfdcde762020-04-02 11:19:20 -07002587 ie = get_ie(ies, ies_len, WLAN_EID_HT_OPERATION);
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002588 if (ie && ie[1] >= 2 &&
2589 (ie[3] & HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK)) {
Hai Shalom899fcc72020-10-19 14:38:18 -07002590 tmp = max_ht40_rate(snr, false);
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002591 if (tmp > est)
2592 est = tmp;
2593 }
2594 }
2595
Hai Shaloma20dcd72022-02-04 13:43:00 -08002596 if (hw_mode && hw_mode->vht_capab) {
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002597 /* Use +1 to assume VHT is always faster than HT */
Hai Shalomfdcde762020-04-02 11:19:20 -07002598 ie = get_ie(ies, ies_len, WLAN_EID_VHT_CAP);
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002599 if (ie) {
Hai Shaloma20dcd72022-02-04 13:43:00 -08002600 bool vht80 = false, vht160 = false;
2601
Hai Shalom899fcc72020-10-19 14:38:18 -07002602 tmp = max_ht20_rate(snr, true) + 1;
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002603 if (tmp > est)
2604 est = tmp;
2605
Hai Shalomfdcde762020-04-02 11:19:20 -07002606 ie = get_ie(ies, ies_len, WLAN_EID_HT_OPERATION);
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002607 if (ie && ie[1] >= 2 &&
2608 (ie[3] &
2609 HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK)) {
Hai Shalom899fcc72020-10-19 14:38:18 -07002610 tmp = max_ht40_rate(snr, true) + 1;
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002611 if (tmp > est)
2612 est = tmp;
2613 }
2614
Hai Shaloma20dcd72022-02-04 13:43:00 -08002615 /* Determine VHT BSS bandwidth based on IEEE Std
2616 * 802.11-2020, Table 11-23 (VHT BSs bandwidth) */
Hai Shalomfdcde762020-04-02 11:19:20 -07002617 ie = get_ie(ies, ies_len, WLAN_EID_VHT_OPERATION);
Hai Shaloma20dcd72022-02-04 13:43:00 -08002618 if (ie && ie[1] >= 3) {
2619 u8 cw = ie[2] & VHT_OPMODE_CHANNEL_WIDTH_MASK;
2620 u8 seg0 = ie[3];
2621 u8 seg1 = ie[4];
2622
2623 if (cw)
2624 vht80 = true;
2625 if (cw == 2 ||
2626 (cw == 3 &&
2627 (seg1 > 0 && abs(seg1 - seg0) == 16)))
2628 vht160 = true;
2629 if (cw == 1 &&
2630 ((seg1 > 0 && abs(seg1 - seg0) == 8) ||
2631 (seg1 > 0 && abs(seg1 - seg0) == 16)))
2632 vht160 = true;
2633 }
2634
2635 if (vht80) {
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002636 tmp = max_vht80_rate(snr) + 1;
2637 if (tmp > est)
2638 est = tmp;
2639 }
Hai Shaloma20dcd72022-02-04 13:43:00 -08002640
2641 if (vht160 &&
2642 (hw_mode->vht_capab &
2643 (VHT_CAP_SUPP_CHAN_WIDTH_160MHZ |
2644 VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ))) {
2645 tmp = max_vht160_rate(snr) + 1;
2646 if (tmp > est)
2647 est = tmp;
2648 }
2649 }
2650 }
2651
2652 if (hw_mode && hw_mode->he_capab[IEEE80211_MODE_INFRA].he_supported) {
2653 /* Use +2 to assume HE is always faster than HT/VHT */
2654 struct ieee80211_he_capabilities *he;
2655 struct he_capabilities *own_he;
2656 u8 cw;
2657
2658 ie = get_ie_ext(ies, ies_len, WLAN_EID_EXT_HE_CAPABILITIES);
2659 if (!ie || (ie[1] < 1 + IEEE80211_HE_CAPAB_MIN_LEN))
2660 return est;
2661 he = (struct ieee80211_he_capabilities *) &ie[3];
2662 own_he = &hw_mode->he_capab[IEEE80211_MODE_INFRA];
2663
2664 tmp = max_he_rate(he20_table, snr) + 2;
2665 if (tmp > est)
2666 est = tmp;
2667
2668 cw = he->he_phy_capab_info[HE_PHYCAP_CHANNEL_WIDTH_SET_IDX] &
2669 own_he->phy_cap[HE_PHYCAP_CHANNEL_WIDTH_SET_IDX];
2670 if (cw &
2671 (IS_2P4GHZ(freq) ? HE_PHYCAP_CHANNEL_WIDTH_SET_40MHZ_IN_2G :
2672 HE_PHYCAP_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G)) {
2673 tmp = max_he_rate(he40_table, snr) + 2;
2674 if (tmp > est)
2675 est = tmp;
2676 }
2677
2678 if (!IS_2P4GHZ(freq) &&
2679 (cw & HE_PHYCAP_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G)) {
2680 tmp = max_he_rate(he80_table, snr) + 2;
2681 if (tmp > est)
2682 est = tmp;
2683 }
2684
2685 if (!IS_2P4GHZ(freq) &&
2686 (cw & (HE_PHYCAP_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
2687 HE_PHYCAP_CHANNEL_WIDTH_SET_80PLUS80MHZ_IN_5G))) {
2688 tmp = max_he_rate(he160_table, snr) + 2;
2689 if (tmp > est)
2690 est = tmp;
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002691 }
2692 }
2693
Hai Shalomfdcde762020-04-02 11:19:20 -07002694 return est;
2695}
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002696
Hai Shalomfdcde762020-04-02 11:19:20 -07002697
2698void scan_est_throughput(struct wpa_supplicant *wpa_s,
2699 struct wpa_scan_res *res)
2700{
2701 int rate; /* max legacy rate in 500 kb/s units */
2702 int snr = res->snr;
2703 const u8 *ies = (const void *) (res + 1);
2704 size_t ie_len = res->ie_len;
2705
2706 if (res->est_throughput)
2707 return;
2708
2709 /* Get maximum legacy rate */
2710 rate = wpa_scan_get_max_rate(res);
2711
2712 if (!ie_len)
2713 ie_len = res->beacon_ie_len;
2714 res->est_throughput =
Hai Shaloma20dcd72022-02-04 13:43:00 -08002715 wpas_get_est_tpt(wpa_s, ies, ie_len, rate, snr, res->freq);
Hai Shalomfdcde762020-04-02 11:19:20 -07002716
2717 /* TODO: channel utilization and AP load (e.g., from AP Beacon) */
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002718}
2719
2720
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002721/**
2722 * wpa_supplicant_get_scan_results - Get scan results
2723 * @wpa_s: Pointer to wpa_supplicant data
2724 * @info: Information about what was scanned or %NULL if not available
2725 * @new_scan: Whether a new scan was performed
2726 * Returns: Scan results, %NULL on failure
2727 *
2728 * This function request the current scan results from the driver and updates
2729 * the local BSS list wpa_s->bss. The caller is responsible for freeing the
2730 * results with wpa_scan_results_free().
2731 */
2732struct wpa_scan_results *
2733wpa_supplicant_get_scan_results(struct wpa_supplicant *wpa_s,
2734 struct scan_info *info, int new_scan)
2735{
2736 struct wpa_scan_results *scan_res;
2737 size_t i;
2738 int (*compar)(const void *, const void *) = wpa_scan_result_compar;
2739
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002740 scan_res = wpa_drv_get_scan_results2(wpa_s);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002741 if (scan_res == NULL) {
2742 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results");
2743 return NULL;
2744 }
Dmitry Shmidtf8623282013-02-20 14:34:59 -08002745 if (scan_res->fetch_time.sec == 0) {
2746 /*
2747 * Make sure we have a valid timestamp if the driver wrapper
2748 * does not set this.
2749 */
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002750 os_get_reltime(&scan_res->fetch_time);
Dmitry Shmidtf8623282013-02-20 14:34:59 -08002751 }
Dmitry Shmidt04949592012-07-19 12:16:46 -07002752 filter_scan_res(wpa_s, scan_res);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002753
Dmitry Shmidt216983b2015-02-06 10:50:36 -08002754 for (i = 0; i < scan_res->num; i++) {
2755 struct wpa_scan_res *scan_res_item = scan_res->res[i];
2756
Dmitry Shmidt7f656022015-02-25 14:36:37 -08002757 scan_snr(scan_res_item);
2758 scan_est_throughput(wpa_s, scan_res_item);
Dmitry Shmidt216983b2015-02-06 10:50:36 -08002759 }
2760
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002761#ifdef CONFIG_WPS
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002762 if (wpas_wps_searching(wpa_s)) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002763 wpa_dbg(wpa_s, MSG_DEBUG, "WPS: Order scan results with WPS "
2764 "provisioning rules");
2765 compar = wpa_scan_result_wps_compar;
2766 }
2767#endif /* CONFIG_WPS */
2768
Dmitry Shmidt9839ecd2016-11-07 11:05:47 -08002769 if (scan_res->res) {
2770 qsort(scan_res->res, scan_res->num,
2771 sizeof(struct wpa_scan_res *), compar);
2772 }
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002773 dump_scan_res(scan_res);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002774
Dmitry Shmidt29333592017-01-09 12:27:11 -08002775 if (wpa_s->ignore_post_flush_scan_res) {
2776 /* FLUSH command aborted an ongoing scan and these are the
2777 * results from the aborted scan. Do not process the results to
2778 * maintain flushed state. */
2779 wpa_dbg(wpa_s, MSG_DEBUG,
2780 "Do not update BSS table based on pending post-FLUSH scan results");
2781 wpa_s->ignore_post_flush_scan_res = 0;
2782 return scan_res;
2783 }
2784
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002785 wpa_bss_update_start(wpa_s);
2786 for (i = 0; i < scan_res->num; i++)
Dmitry Shmidtf8623282013-02-20 14:34:59 -08002787 wpa_bss_update_scan_res(wpa_s, scan_res->res[i],
2788 &scan_res->fetch_time);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002789 wpa_bss_update_end(wpa_s, info, new_scan);
2790
2791 return scan_res;
2792}
2793
2794
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08002795/**
2796 * wpa_supplicant_update_scan_results - Update scan results from the driver
2797 * @wpa_s: Pointer to wpa_supplicant data
2798 * Returns: 0 on success, -1 on failure
2799 *
2800 * This function updates the BSS table within wpa_supplicant based on the
2801 * currently available scan results from the driver without requesting a new
2802 * scan. This is used in cases where the driver indicates an association
2803 * (including roaming within ESS) and wpa_supplicant does not yet have the
2804 * needed information to complete the connection (e.g., to perform validation
2805 * steps in 4-way handshake).
2806 */
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002807int wpa_supplicant_update_scan_results(struct wpa_supplicant *wpa_s)
2808{
2809 struct wpa_scan_results *scan_res;
2810 scan_res = wpa_supplicant_get_scan_results(wpa_s, NULL, 0);
2811 if (scan_res == NULL)
2812 return -1;
2813 wpa_scan_results_free(scan_res);
2814
2815 return 0;
2816}
Dmitry Shmidt3a787e62013-01-17 10:32:35 -08002817
2818
2819/**
2820 * scan_only_handler - Reports scan results
2821 */
2822void scan_only_handler(struct wpa_supplicant *wpa_s,
2823 struct wpa_scan_results *scan_res)
2824{
Dmitry Shmidt4b9d52f2013-02-05 17:44:43 -08002825 wpa_dbg(wpa_s, MSG_DEBUG, "Scan-only results received");
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002826 if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
2827 wpa_s->manual_scan_use_id && wpa_s->own_scan_running) {
2828 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS "id=%u",
2829 wpa_s->manual_scan_id);
2830 wpa_s->manual_scan_use_id = 0;
2831 } else {
2832 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
2833 }
Dmitry Shmidt3a787e62013-01-17 10:32:35 -08002834 wpas_notify_scan_results(wpa_s);
Dmitry Shmidt4b9d52f2013-02-05 17:44:43 -08002835 wpas_notify_scan_done(wpa_s, 1);
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002836 if (wpa_s->scan_work) {
2837 struct wpa_radio_work *work = wpa_s->scan_work;
2838 wpa_s->scan_work = NULL;
2839 radio_work_done(work);
2840 }
Dmitry Shmidtd80a4012015-11-05 16:35:40 -08002841
2842 if (wpa_s->wpa_state == WPA_SCANNING)
2843 wpa_supplicant_set_state(wpa_s, wpa_s->scan_prev_wpa_state);
Dmitry Shmidt3a787e62013-01-17 10:32:35 -08002844}
Dmitry Shmidt37d4d6a2013-03-18 13:09:42 -07002845
2846
2847int wpas_scan_scheduled(struct wpa_supplicant *wpa_s)
2848{
2849 return eloop_is_timeout_registered(wpa_supplicant_scan, wpa_s, NULL);
2850}
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002851
2852
2853struct wpa_driver_scan_params *
2854wpa_scan_clone_params(const struct wpa_driver_scan_params *src)
2855{
2856 struct wpa_driver_scan_params *params;
2857 size_t i;
2858 u8 *n;
2859
2860 params = os_zalloc(sizeof(*params));
2861 if (params == NULL)
2862 return NULL;
2863
2864 for (i = 0; i < src->num_ssids; i++) {
2865 if (src->ssids[i].ssid) {
Dmitry Shmidtd2986c22017-10-23 14:22:09 -07002866 n = os_memdup(src->ssids[i].ssid,
2867 src->ssids[i].ssid_len);
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002868 if (n == NULL)
2869 goto failed;
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002870 params->ssids[i].ssid = n;
2871 params->ssids[i].ssid_len = src->ssids[i].ssid_len;
2872 }
2873 }
2874 params->num_ssids = src->num_ssids;
2875
2876 if (src->extra_ies) {
Dmitry Shmidtd2986c22017-10-23 14:22:09 -07002877 n = os_memdup(src->extra_ies, src->extra_ies_len);
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002878 if (n == NULL)
2879 goto failed;
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002880 params->extra_ies = n;
2881 params->extra_ies_len = src->extra_ies_len;
2882 }
2883
2884 if (src->freqs) {
2885 int len = int_array_len(src->freqs);
Dmitry Shmidtd2986c22017-10-23 14:22:09 -07002886 params->freqs = os_memdup(src->freqs, (len + 1) * sizeof(int));
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002887 if (params->freqs == NULL)
2888 goto failed;
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002889 }
2890
2891 if (src->filter_ssids) {
Dmitry Shmidtd2986c22017-10-23 14:22:09 -07002892 params->filter_ssids = os_memdup(src->filter_ssids,
2893 sizeof(*params->filter_ssids) *
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002894 src->num_filter_ssids);
2895 if (params->filter_ssids == NULL)
2896 goto failed;
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002897 params->num_filter_ssids = src->num_filter_ssids;
2898 }
2899
2900 params->filter_rssi = src->filter_rssi;
2901 params->p2p_probe = src->p2p_probe;
2902 params->only_new_results = src->only_new_results;
Dmitry Shmidt2271d3f2014-06-23 12:16:31 -07002903 params->low_priority = src->low_priority;
Dmitry Shmidt29333592017-01-09 12:27:11 -08002904 params->duration = src->duration;
2905 params->duration_mandatory = src->duration_mandatory;
Hai Shalomce48b4a2018-09-05 11:41:35 -07002906 params->oce_scan = src->oce_scan;
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002907
Dmitry Shmidtd7ff03d2015-12-04 14:49:35 -08002908 if (src->sched_scan_plans_num > 0) {
2909 params->sched_scan_plans =
Dmitry Shmidtd2986c22017-10-23 14:22:09 -07002910 os_memdup(src->sched_scan_plans,
2911 sizeof(*src->sched_scan_plans) *
Dmitry Shmidtd7ff03d2015-12-04 14:49:35 -08002912 src->sched_scan_plans_num);
2913 if (!params->sched_scan_plans)
2914 goto failed;
2915
Dmitry Shmidtd7ff03d2015-12-04 14:49:35 -08002916 params->sched_scan_plans_num = src->sched_scan_plans_num;
2917 }
2918
Hai Shalomc3565922019-10-28 11:58:20 -07002919 if (src->mac_addr_rand &&
2920 wpa_setup_mac_addr_rand_params(params, src->mac_addr))
2921 goto failed;
Dmitry Shmidt9c175262016-03-03 10:20:07 -08002922
2923 if (src->bssid) {
2924 u8 *bssid;
2925
Dmitry Shmidtd2986c22017-10-23 14:22:09 -07002926 bssid = os_memdup(src->bssid, ETH_ALEN);
Dmitry Shmidt9c175262016-03-03 10:20:07 -08002927 if (!bssid)
2928 goto failed;
Dmitry Shmidt9c175262016-03-03 10:20:07 -08002929 params->bssid = bssid;
2930 }
2931
Dmitry Shmidtebd93af2017-02-21 13:40:44 -08002932 params->relative_rssi_set = src->relative_rssi_set;
2933 params->relative_rssi = src->relative_rssi;
2934 params->relative_adjust_band = src->relative_adjust_band;
2935 params->relative_adjust_rssi = src->relative_adjust_rssi;
Hai Shaloma20dcd72022-02-04 13:43:00 -08002936 params->p2p_include_6ghz = src->p2p_include_6ghz;
Sunil8cd6f4d2022-06-28 18:40:46 +00002937 params->non_coloc_6ghz = src->non_coloc_6ghz;
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002938 return params;
2939
2940failed:
2941 wpa_scan_free_params(params);
2942 return NULL;
2943}
2944
2945
2946void wpa_scan_free_params(struct wpa_driver_scan_params *params)
2947{
2948 size_t i;
2949
2950 if (params == NULL)
2951 return;
2952
2953 for (i = 0; i < params->num_ssids; i++)
2954 os_free((u8 *) params->ssids[i].ssid);
2955 os_free((u8 *) params->extra_ies);
2956 os_free(params->freqs);
2957 os_free(params->filter_ssids);
Dmitry Shmidtd7ff03d2015-12-04 14:49:35 -08002958 os_free(params->sched_scan_plans);
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -08002959
2960 /*
2961 * Note: params->mac_addr_mask points to same memory allocation and
2962 * must not be freed separately.
2963 */
2964 os_free((u8 *) params->mac_addr);
2965
Dmitry Shmidt9c175262016-03-03 10:20:07 -08002966 os_free((u8 *) params->bssid);
2967
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002968 os_free(params);
2969}
Dmitry Shmidt98660862014-03-11 17:26:21 -07002970
2971
2972int wpas_start_pno(struct wpa_supplicant *wpa_s)
2973{
Hai Shalomfdcde762020-04-02 11:19:20 -07002974 int ret;
2975 size_t prio, i, num_ssid, num_match_ssid;
Dmitry Shmidt98660862014-03-11 17:26:21 -07002976 struct wpa_ssid *ssid;
2977 struct wpa_driver_scan_params params;
Dmitry Shmidtd7ff03d2015-12-04 14:49:35 -08002978 struct sched_scan_plan scan_plan;
Dmitry Shmidte4663042016-04-04 10:07:49 -07002979 unsigned int max_sched_scan_ssids;
Dmitry Shmidt98660862014-03-11 17:26:21 -07002980
2981 if (!wpa_s->sched_scan_supported)
2982 return -1;
2983
Dmitry Shmidte4663042016-04-04 10:07:49 -07002984 if (wpa_s->max_sched_scan_ssids > WPAS_MAX_SCAN_SSIDS)
2985 max_sched_scan_ssids = WPAS_MAX_SCAN_SSIDS;
2986 else
2987 max_sched_scan_ssids = wpa_s->max_sched_scan_ssids;
2988 if (max_sched_scan_ssids < 1)
2989 return -1;
2990
Dmitry Shmidt98660862014-03-11 17:26:21 -07002991 if (wpa_s->pno || wpa_s->pno_sched_pending)
2992 return 0;
2993
2994 if ((wpa_s->wpa_state > WPA_SCANNING) &&
Dmitry Shmidtebd93af2017-02-21 13:40:44 -08002995 (wpa_s->wpa_state < WPA_COMPLETED)) {
Dmitry Shmidt98660862014-03-11 17:26:21 -07002996 wpa_printf(MSG_ERROR, "PNO: In assoc process");
2997 return -EAGAIN;
2998 }
2999
3000 if (wpa_s->wpa_state == WPA_SCANNING) {
3001 wpa_supplicant_cancel_scan(wpa_s);
3002 if (wpa_s->sched_scanning) {
3003 wpa_printf(MSG_DEBUG, "Schedule PNO on completion of "
3004 "ongoing sched scan");
3005 wpa_supplicant_cancel_sched_scan(wpa_s);
3006 wpa_s->pno_sched_pending = 1;
3007 return 0;
3008 }
3009 }
3010
Dmitry Shmidt9839ecd2016-11-07 11:05:47 -08003011 if (wpa_s->sched_scan_stop_req) {
3012 wpa_printf(MSG_DEBUG,
3013 "Schedule PNO after previous sched scan has stopped");
3014 wpa_s->pno_sched_pending = 1;
3015 return 0;
3016 }
3017
Dmitry Shmidt98660862014-03-11 17:26:21 -07003018 os_memset(&params, 0, sizeof(params));
3019
Dmitry Shmidt6aa8ae42014-07-07 09:31:33 -07003020 num_ssid = num_match_ssid = 0;
Dmitry Shmidt98660862014-03-11 17:26:21 -07003021 ssid = wpa_s->conf->ssid;
3022 while (ssid) {
Dmitry Shmidt6aa8ae42014-07-07 09:31:33 -07003023 if (!wpas_network_disabled(wpa_s, ssid)) {
3024 num_match_ssid++;
3025 if (ssid->scan_ssid)
3026 num_ssid++;
3027 }
Dmitry Shmidt98660862014-03-11 17:26:21 -07003028 ssid = ssid->next;
3029 }
Dmitry Shmidt6aa8ae42014-07-07 09:31:33 -07003030
3031 if (num_match_ssid == 0) {
3032 wpa_printf(MSG_DEBUG, "PNO: No configured SSIDs");
3033 return -1;
3034 }
3035
3036 if (num_match_ssid > num_ssid) {
3037 params.num_ssids++; /* wildcard */
3038 num_ssid++;
3039 }
3040
Dmitry Shmidte4663042016-04-04 10:07:49 -07003041 if (num_ssid > max_sched_scan_ssids) {
Dmitry Shmidt98660862014-03-11 17:26:21 -07003042 wpa_printf(MSG_DEBUG, "PNO: Use only the first %u SSIDs from "
Dmitry Shmidte4663042016-04-04 10:07:49 -07003043 "%u", max_sched_scan_ssids, (unsigned int) num_ssid);
3044 num_ssid = max_sched_scan_ssids;
Dmitry Shmidt98660862014-03-11 17:26:21 -07003045 }
3046
Dmitry Shmidt6aa8ae42014-07-07 09:31:33 -07003047 if (num_match_ssid > wpa_s->max_match_sets) {
3048 num_match_ssid = wpa_s->max_match_sets;
3049 wpa_dbg(wpa_s, MSG_DEBUG, "PNO: Too many SSIDs to match");
Dmitry Shmidt98660862014-03-11 17:26:21 -07003050 }
Dmitry Shmidt6aa8ae42014-07-07 09:31:33 -07003051 params.filter_ssids = os_calloc(num_match_ssid,
3052 sizeof(struct wpa_driver_scan_filter));
Dmitry Shmidt98660862014-03-11 17:26:21 -07003053 if (params.filter_ssids == NULL)
3054 return -1;
Dmitry Shmidt7f656022015-02-25 14:36:37 -08003055
Dmitry Shmidt98660862014-03-11 17:26:21 -07003056 i = 0;
Dmitry Shmidt7f656022015-02-25 14:36:37 -08003057 prio = 0;
3058 ssid = wpa_s->conf->pssid[prio];
Dmitry Shmidt98660862014-03-11 17:26:21 -07003059 while (ssid) {
3060 if (!wpas_network_disabled(wpa_s, ssid)) {
Dmitry Shmidt6aa8ae42014-07-07 09:31:33 -07003061 if (ssid->scan_ssid && params.num_ssids < num_ssid) {
3062 params.ssids[params.num_ssids].ssid =
3063 ssid->ssid;
3064 params.ssids[params.num_ssids].ssid_len =
3065 ssid->ssid_len;
3066 params.num_ssids++;
3067 }
Dmitry Shmidt98660862014-03-11 17:26:21 -07003068 os_memcpy(params.filter_ssids[i].ssid, ssid->ssid,
3069 ssid->ssid_len);
3070 params.filter_ssids[i].ssid_len = ssid->ssid_len;
3071 params.num_filter_ssids++;
3072 i++;
Dmitry Shmidt6aa8ae42014-07-07 09:31:33 -07003073 if (i == num_match_ssid)
Dmitry Shmidt98660862014-03-11 17:26:21 -07003074 break;
3075 }
Dmitry Shmidt7f656022015-02-25 14:36:37 -08003076 if (ssid->pnext)
3077 ssid = ssid->pnext;
3078 else if (prio + 1 == wpa_s->conf->num_prio)
3079 break;
3080 else
3081 ssid = wpa_s->conf->pssid[++prio];
Dmitry Shmidt98660862014-03-11 17:26:21 -07003082 }
3083
3084 if (wpa_s->conf->filter_rssi)
3085 params.filter_rssi = wpa_s->conf->filter_rssi;
3086
Dmitry Shmidtd7ff03d2015-12-04 14:49:35 -08003087 if (wpa_s->sched_scan_plans_num) {
3088 params.sched_scan_plans = wpa_s->sched_scan_plans;
3089 params.sched_scan_plans_num = wpa_s->sched_scan_plans_num;
3090 } else {
3091 /* Set one scan plan that will run infinitely */
3092 if (wpa_s->conf->sched_scan_interval)
3093 scan_plan.interval = wpa_s->conf->sched_scan_interval;
3094 else
3095 scan_plan.interval = 10;
3096
3097 scan_plan.iterations = 0;
3098 params.sched_scan_plans = &scan_plan;
3099 params.sched_scan_plans_num = 1;
3100 }
Dmitry Shmidt98660862014-03-11 17:26:21 -07003101
Dmitry Shmidtd2986c22017-10-23 14:22:09 -07003102 params.sched_scan_start_delay = wpa_s->conf->sched_scan_start_delay;
3103
Dmitry Shmidtd11f0192014-03-24 12:09:47 -07003104 if (params.freqs == NULL && wpa_s->manual_sched_scan_freqs) {
3105 wpa_dbg(wpa_s, MSG_DEBUG, "Limit sched scan to specified channels");
3106 params.freqs = wpa_s->manual_sched_scan_freqs;
3107 }
3108
Dmitry Shmidtabb90a32016-12-05 15:34:39 -08003109 if ((wpa_s->mac_addr_rand_enable & MAC_ADDR_RAND_PNO) &&
Hai Shalomc3565922019-10-28 11:58:20 -07003110 wpa_s->wpa_state <= WPA_SCANNING)
3111 wpa_setup_mac_addr_rand_params(&params, wpa_s->mac_addr_pno);
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -08003112
Dmitry Shmidtebd93af2017-02-21 13:40:44 -08003113 wpa_scan_set_relative_rssi_params(wpa_s, &params);
3114
Dmitry Shmidtd7ff03d2015-12-04 14:49:35 -08003115 ret = wpa_supplicant_start_sched_scan(wpa_s, &params);
Dmitry Shmidt98660862014-03-11 17:26:21 -07003116 os_free(params.filter_ssids);
Hai Shalomc3565922019-10-28 11:58:20 -07003117 os_free(params.mac_addr);
Dmitry Shmidt98660862014-03-11 17:26:21 -07003118 if (ret == 0)
3119 wpa_s->pno = 1;
3120 else
3121 wpa_msg(wpa_s, MSG_ERROR, "Failed to schedule PNO");
3122 return ret;
3123}
3124
3125
3126int wpas_stop_pno(struct wpa_supplicant *wpa_s)
3127{
3128 int ret = 0;
3129
3130 if (!wpa_s->pno)
3131 return 0;
3132
3133 ret = wpa_supplicant_stop_sched_scan(wpa_s);
Dmitry Shmidt9839ecd2016-11-07 11:05:47 -08003134 wpa_s->sched_scan_stop_req = 1;
Dmitry Shmidt98660862014-03-11 17:26:21 -07003135
3136 wpa_s->pno = 0;
3137 wpa_s->pno_sched_pending = 0;
3138
3139 if (wpa_s->wpa_state == WPA_SCANNING)
3140 wpa_supplicant_req_scan(wpa_s, 0, 0);
3141
3142 return ret;
3143}
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -08003144
3145
3146void wpas_mac_addr_rand_scan_clear(struct wpa_supplicant *wpa_s,
3147 unsigned int type)
3148{
3149 type &= MAC_ADDR_RAND_ALL;
3150 wpa_s->mac_addr_rand_enable &= ~type;
3151
3152 if (type & MAC_ADDR_RAND_SCAN) {
3153 os_free(wpa_s->mac_addr_scan);
3154 wpa_s->mac_addr_scan = NULL;
3155 }
3156
3157 if (type & MAC_ADDR_RAND_SCHED_SCAN) {
3158 os_free(wpa_s->mac_addr_sched_scan);
3159 wpa_s->mac_addr_sched_scan = NULL;
3160 }
3161
3162 if (type & MAC_ADDR_RAND_PNO) {
3163 os_free(wpa_s->mac_addr_pno);
3164 wpa_s->mac_addr_pno = NULL;
3165 }
3166}
3167
3168
3169int wpas_mac_addr_rand_scan_set(struct wpa_supplicant *wpa_s,
3170 unsigned int type, const u8 *addr,
3171 const u8 *mask)
3172{
3173 u8 *tmp = NULL;
3174
Hai Shalom74f70d42019-02-11 14:42:39 -08003175 if ((wpa_s->mac_addr_rand_supported & type) != type ) {
3176 wpa_printf(MSG_INFO,
3177 "scan: MAC randomization type %u != supported=%u",
3178 type, wpa_s->mac_addr_rand_supported);
3179 return -1;
3180 }
3181
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -08003182 wpas_mac_addr_rand_scan_clear(wpa_s, type);
3183
3184 if (addr) {
3185 tmp = os_malloc(2 * ETH_ALEN);
3186 if (!tmp)
3187 return -1;
3188 os_memcpy(tmp, addr, ETH_ALEN);
3189 os_memcpy(tmp + ETH_ALEN, mask, ETH_ALEN);
3190 }
3191
3192 if (type == MAC_ADDR_RAND_SCAN) {
3193 wpa_s->mac_addr_scan = tmp;
3194 } else if (type == MAC_ADDR_RAND_SCHED_SCAN) {
3195 wpa_s->mac_addr_sched_scan = tmp;
3196 } else if (type == MAC_ADDR_RAND_PNO) {
3197 wpa_s->mac_addr_pno = tmp;
3198 } else {
3199 wpa_printf(MSG_INFO,
3200 "scan: Invalid MAC randomization type=0x%x",
3201 type);
3202 os_free(tmp);
3203 return -1;
3204 }
3205
3206 wpa_s->mac_addr_rand_enable |= type;
3207 return 0;
3208}
Dmitry Shmidtd7ff03d2015-12-04 14:49:35 -08003209
3210
Hai Shalomc3565922019-10-28 11:58:20 -07003211int wpas_mac_addr_rand_scan_get_mask(struct wpa_supplicant *wpa_s,
3212 unsigned int type, u8 *mask)
3213{
3214 const u8 *to_copy;
3215
3216 if ((wpa_s->mac_addr_rand_enable & type) != type)
3217 return -1;
3218
3219 if (type == MAC_ADDR_RAND_SCAN) {
3220 to_copy = wpa_s->mac_addr_scan;
3221 } else if (type == MAC_ADDR_RAND_SCHED_SCAN) {
3222 to_copy = wpa_s->mac_addr_sched_scan;
3223 } else if (type == MAC_ADDR_RAND_PNO) {
3224 to_copy = wpa_s->mac_addr_pno;
3225 } else {
3226 wpa_printf(MSG_DEBUG,
3227 "scan: Invalid MAC randomization type=0x%x",
3228 type);
3229 return -1;
3230 }
3231
3232 os_memcpy(mask, to_copy + ETH_ALEN, ETH_ALEN);
3233 return 0;
3234}
3235
3236
Dmitry Shmidtd7ff03d2015-12-04 14:49:35 -08003237int wpas_abort_ongoing_scan(struct wpa_supplicant *wpa_s)
3238{
Dmitry Shmidtabb90a32016-12-05 15:34:39 -08003239 struct wpa_radio_work *work;
3240 struct wpa_radio *radio = wpa_s->radio;
Dmitry Shmidt9c175262016-03-03 10:20:07 -08003241
Dmitry Shmidtabb90a32016-12-05 15:34:39 -08003242 dl_list_for_each(work, &radio->work, struct wpa_radio_work, list) {
3243 if (work->wpa_s != wpa_s || !work->started ||
3244 (os_strcmp(work->type, "scan") != 0 &&
3245 os_strcmp(work->type, "p2p-scan") != 0))
3246 continue;
Dmitry Shmidtd7ff03d2015-12-04 14:49:35 -08003247 wpa_dbg(wpa_s, MSG_DEBUG, "Abort an ongoing scan");
Dmitry Shmidtabb90a32016-12-05 15:34:39 -08003248 return wpa_drv_abort_scan(wpa_s, wpa_s->curr_scan_cookie);
Dmitry Shmidtd7ff03d2015-12-04 14:49:35 -08003249 }
3250
Dmitry Shmidtabb90a32016-12-05 15:34:39 -08003251 wpa_dbg(wpa_s, MSG_DEBUG, "No ongoing scan/p2p-scan found to abort");
3252 return -1;
Dmitry Shmidtd7ff03d2015-12-04 14:49:35 -08003253}
3254
3255
3256int wpas_sched_scan_plans_set(struct wpa_supplicant *wpa_s, const char *cmd)
3257{
3258 struct sched_scan_plan *scan_plans = NULL;
3259 const char *token, *context = NULL;
3260 unsigned int num = 0;
3261
3262 if (!cmd)
3263 return -1;
3264
3265 if (!cmd[0]) {
3266 wpa_printf(MSG_DEBUG, "Clear sched scan plans");
3267 os_free(wpa_s->sched_scan_plans);
3268 wpa_s->sched_scan_plans = NULL;
3269 wpa_s->sched_scan_plans_num = 0;
3270 return 0;
3271 }
3272
3273 while ((token = cstr_token(cmd, " ", &context))) {
3274 int ret;
3275 struct sched_scan_plan *scan_plan, *n;
3276
3277 n = os_realloc_array(scan_plans, num + 1, sizeof(*scan_plans));
3278 if (!n)
3279 goto fail;
3280
3281 scan_plans = n;
3282 scan_plan = &scan_plans[num];
3283 num++;
3284
3285 ret = sscanf(token, "%u:%u", &scan_plan->interval,
3286 &scan_plan->iterations);
3287 if (ret <= 0 || ret > 2 || !scan_plan->interval) {
3288 wpa_printf(MSG_ERROR,
3289 "Invalid sched scan plan input: %s", token);
3290 goto fail;
3291 }
3292
Dmitry Shmidtd7ff03d2015-12-04 14:49:35 -08003293 if (scan_plan->interval > wpa_s->max_sched_scan_plan_interval) {
3294 wpa_printf(MSG_WARNING,
3295 "scan plan %u: Scan interval too long(%u), use the maximum allowed(%u)",
3296 num, scan_plan->interval,
3297 wpa_s->max_sched_scan_plan_interval);
3298 scan_plan->interval =
3299 wpa_s->max_sched_scan_plan_interval;
3300 }
3301
3302 if (ret == 1) {
3303 scan_plan->iterations = 0;
3304 break;
3305 }
3306
3307 if (!scan_plan->iterations) {
3308 wpa_printf(MSG_ERROR,
3309 "scan plan %u: Number of iterations cannot be zero",
3310 num);
3311 goto fail;
3312 }
3313
3314 if (scan_plan->iterations >
3315 wpa_s->max_sched_scan_plan_iterations) {
3316 wpa_printf(MSG_WARNING,
3317 "scan plan %u: Too many iterations(%u), use the maximum allowed(%u)",
3318 num, scan_plan->iterations,
3319 wpa_s->max_sched_scan_plan_iterations);
3320 scan_plan->iterations =
3321 wpa_s->max_sched_scan_plan_iterations;
3322 }
3323
3324 wpa_printf(MSG_DEBUG,
3325 "scan plan %u: interval=%u iterations=%u",
3326 num, scan_plan->interval, scan_plan->iterations);
3327 }
3328
3329 if (!scan_plans) {
3330 wpa_printf(MSG_ERROR, "Invalid scan plans entry");
3331 goto fail;
3332 }
3333
3334 if (cstr_token(cmd, " ", &context) || scan_plans[num - 1].iterations) {
3335 wpa_printf(MSG_ERROR,
3336 "All scan plans but the last must specify a number of iterations");
3337 goto fail;
3338 }
3339
3340 wpa_printf(MSG_DEBUG, "scan plan %u (last plan): interval=%u",
3341 num, scan_plans[num - 1].interval);
3342
3343 if (num > wpa_s->max_sched_scan_plans) {
3344 wpa_printf(MSG_WARNING,
3345 "Too many scheduled scan plans (only %u supported)",
3346 wpa_s->max_sched_scan_plans);
3347 wpa_printf(MSG_WARNING,
3348 "Use only the first %u scan plans, and the last one (in infinite loop)",
3349 wpa_s->max_sched_scan_plans - 1);
3350 os_memcpy(&scan_plans[wpa_s->max_sched_scan_plans - 1],
3351 &scan_plans[num - 1], sizeof(*scan_plans));
3352 num = wpa_s->max_sched_scan_plans;
3353 }
3354
3355 os_free(wpa_s->sched_scan_plans);
3356 wpa_s->sched_scan_plans = scan_plans;
3357 wpa_s->sched_scan_plans_num = num;
3358
3359 return 0;
3360
3361fail:
3362 os_free(scan_plans);
3363 wpa_printf(MSG_ERROR, "invalid scan plans list");
3364 return -1;
3365}
Dmitry Shmidtaca489e2016-09-28 15:44:14 -07003366
3367
3368/**
3369 * wpas_scan_reset_sched_scan - Reset sched_scan state
3370 * @wpa_s: Pointer to wpa_supplicant data
3371 *
3372 * This function is used to cancel a running scheduled scan and to reset an
3373 * internal scan state to continue with a regular scan on the following
3374 * wpa_supplicant_req_scan() calls.
3375 */
3376void wpas_scan_reset_sched_scan(struct wpa_supplicant *wpa_s)
3377{
3378 wpa_s->normal_scans = 0;
3379 if (wpa_s->sched_scanning) {
3380 wpa_s->sched_scan_timed_out = 0;
3381 wpa_s->prev_sched_ssid = NULL;
3382 wpa_supplicant_cancel_sched_scan(wpa_s);
3383 }
3384}
3385
3386
3387void wpas_scan_restart_sched_scan(struct wpa_supplicant *wpa_s)
3388{
3389 /* simulate timeout to restart the sched scan */
3390 wpa_s->sched_scan_timed_out = 1;
3391 wpa_s->prev_sched_ssid = NULL;
3392 wpa_supplicant_cancel_sched_scan(wpa_s);
3393}