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[thirdparty/hostap.git] / wpa_supplicant / p2p_supplicant.c
1 /*
2 * wpa_supplicant - P2P
3 * Copyright (c) 2009-2010, Atheros Communications
4 * Copyright (c) 2010-2014, Jouni Malinen <j@w1.fi>
5 *
6 * This software may be distributed under the terms of the BSD license.
7 * See README for more details.
8 */
9
10 #include "includes.h"
11
12 #include "common.h"
13 #include "eloop.h"
14 #include "common/ieee802_11_common.h"
15 #include "common/ieee802_11_defs.h"
16 #include "common/wpa_ctrl.h"
17 #include "wps/wps_i.h"
18 #include "p2p/p2p.h"
19 #include "ap/hostapd.h"
20 #include "ap/ap_config.h"
21 #include "ap/sta_info.h"
22 #include "ap/ap_drv_ops.h"
23 #include "ap/wps_hostapd.h"
24 #include "ap/p2p_hostapd.h"
25 #include "ap/dfs.h"
26 #include "eapol_supp/eapol_supp_sm.h"
27 #include "rsn_supp/wpa.h"
28 #include "wpa_supplicant_i.h"
29 #include "driver_i.h"
30 #include "ap.h"
31 #include "config_ssid.h"
32 #include "config.h"
33 #include "notify.h"
34 #include "scan.h"
35 #include "bss.h"
36 #include "offchannel.h"
37 #include "wps_supplicant.h"
38 #include "p2p_supplicant.h"
39 #include "wifi_display.h"
40
41
42 /*
43 * How many times to try to scan to find the GO before giving up on join
44 * request.
45 */
46 #define P2P_MAX_JOIN_SCAN_ATTEMPTS 10
47
48 #define P2P_AUTO_PD_SCAN_ATTEMPTS 5
49
50 /**
51 * Defines time interval in seconds when a GO needs to evacuate a frequency that
52 * it is currently using, but is no longer valid for P2P use cases.
53 */
54 #define P2P_GO_FREQ_CHANGE_TIME 5
55
56 /**
57 * Defines CSA parameters which are used when GO evacuates the no longer valid
58 * channel (and if the driver supports channel switch).
59 */
60 #define P2P_GO_CSA_COUNT 7
61 #define P2P_GO_CSA_BLOCK_TX 0
62
63 #ifndef P2P_MAX_CLIENT_IDLE
64 /*
65 * How many seconds to try to reconnect to the GO when connection in P2P client
66 * role has been lost.
67 */
68 #define P2P_MAX_CLIENT_IDLE 10
69 #endif /* P2P_MAX_CLIENT_IDLE */
70
71 #ifndef P2P_MAX_INITIAL_CONN_WAIT
72 /*
73 * How many seconds to wait for initial 4-way handshake to get completed after
74 * WPS provisioning step or after the re-invocation of a persistent group on a
75 * P2P Client.
76 */
77 #define P2P_MAX_INITIAL_CONN_WAIT 10
78 #endif /* P2P_MAX_INITIAL_CONN_WAIT */
79
80 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO
81 /*
82 * How many seconds to wait for initial 4-way handshake to get completed after
83 * WPS provisioning step on the GO. This controls the extra time the P2P
84 * operation is considered to be in progress (e.g., to delay other scans) after
85 * WPS provisioning has been completed on the GO during group formation.
86 */
87 #define P2P_MAX_INITIAL_CONN_WAIT_GO 10
88 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO */
89
90 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE
91 /*
92 * How many seconds to wait for initial 4-way handshake to get completed after
93 * re-invocation of a persistent group on the GO when the client is expected
94 * to connect automatically (no user interaction).
95 */
96 #define P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 15
97 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE */
98
99 #define P2P_MGMT_DEVICE_PREFIX "p2p-dev-"
100
101 /*
102 * How many seconds to wait to re-attempt to move GOs, in case previous attempt
103 * was not possible.
104 */
105 #define P2P_RECONSIDER_GO_MOVE_DELAY 30
106
107 enum p2p_group_removal_reason {
108 P2P_GROUP_REMOVAL_UNKNOWN,
109 P2P_GROUP_REMOVAL_SILENT,
110 P2P_GROUP_REMOVAL_FORMATION_FAILED,
111 P2P_GROUP_REMOVAL_REQUESTED,
112 P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
113 P2P_GROUP_REMOVAL_UNAVAILABLE,
114 P2P_GROUP_REMOVAL_GO_ENDING_SESSION,
115 P2P_GROUP_REMOVAL_PSK_FAILURE,
116 P2P_GROUP_REMOVAL_FREQ_CONFLICT,
117 P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL
118 };
119
120
121 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
122 static struct wpa_supplicant *
123 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
124 int go);
125 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
126 const u8 *ssid, size_t ssid_len);
127 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
128 int *force_freq, int *pref_freq, int go,
129 unsigned int *pref_freq_list,
130 unsigned int *num_pref_freq);
131 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
132 const u8 *ssid, size_t ssid_len);
133 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
134 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
135 const u8 *dev_addr, enum p2p_wps_method wps_method,
136 int auto_join, int freq,
137 const u8 *ssid, size_t ssid_len);
138 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
139 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
140 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
141 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
142 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
143 void *timeout_ctx);
144 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx);
145 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
146 int group_added);
147 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s);
148 static void wpas_stop_listen(void *ctx);
149 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx);
150 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s);
151 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
152 enum wpa_driver_if_type type);
153 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
154 int already_deleted);
155 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
156 struct wpa_used_freq_data *freqs,
157 unsigned int num);
158 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx);
159 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq);
160 static void
161 wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
162 struct wpa_used_freq_data *freqs, unsigned int num,
163 enum wpas_p2p_channel_update_trig trig);
164 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx);
165
166
167 /*
168 * Get the number of concurrent channels that the HW can operate, but that are
169 * currently not in use by any of the wpa_supplicant interfaces.
170 */
171 static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s)
172 {
173 int *freqs;
174 int num, unused;
175
176 freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
177 if (!freqs)
178 return -1;
179
180 num = get_shared_radio_freqs(wpa_s, freqs,
181 wpa_s->num_multichan_concurrent);
182 os_free(freqs);
183
184 unused = wpa_s->num_multichan_concurrent - num;
185 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused);
186 return unused;
187 }
188
189
190 /*
191 * Get the frequencies that are currently in use by one or more of the virtual
192 * interfaces, and that are also valid for P2P operation.
193 */
194 static unsigned int
195 wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s,
196 struct wpa_used_freq_data *p2p_freqs,
197 unsigned int len)
198 {
199 struct wpa_used_freq_data *freqs;
200 unsigned int num, i, j;
201
202 freqs = os_calloc(wpa_s->num_multichan_concurrent,
203 sizeof(struct wpa_used_freq_data));
204 if (!freqs)
205 return 0;
206
207 num = get_shared_radio_freqs_data(wpa_s, freqs,
208 wpa_s->num_multichan_concurrent);
209
210 os_memset(p2p_freqs, 0, sizeof(struct wpa_used_freq_data) * len);
211
212 for (i = 0, j = 0; i < num && j < len; i++) {
213 if (p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
214 p2p_freqs[j++] = freqs[i];
215 }
216
217 os_free(freqs);
218
219 dump_freq_data(wpa_s, "valid for P2P", p2p_freqs, j);
220
221 return j;
222 }
223
224
225 static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s,
226 int freq)
227 {
228 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
229 return;
230
231 /* Use the wpa_s used to control the P2P Device operation */
232 wpa_s = wpa_s->global->p2p_init_wpa_s;
233
234 if (wpa_s->conf->p2p_ignore_shared_freq &&
235 freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
236 wpas_p2p_num_unused_channels(wpa_s) > 0) {
237 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration",
238 freq);
239 freq = 0;
240 }
241 p2p_set_own_freq_preference(wpa_s->global->p2p, freq);
242 }
243
244
245 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
246 struct wpa_scan_results *scan_res)
247 {
248 size_t i;
249
250 if (wpa_s->p2p_scan_work) {
251 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
252 wpa_s->p2p_scan_work = NULL;
253 radio_work_done(work);
254 }
255
256 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
257 return;
258
259 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
260 (int) scan_res->num);
261
262 for (i = 0; i < scan_res->num; i++) {
263 struct wpa_scan_res *bss = scan_res->res[i];
264 struct os_reltime time_tmp_age, entry_ts;
265 const u8 *ies;
266 size_t ies_len;
267
268 time_tmp_age.sec = bss->age / 1000;
269 time_tmp_age.usec = (bss->age % 1000) * 1000;
270 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts);
271
272 ies = (const u8 *) (bss + 1);
273 ies_len = bss->ie_len;
274 if (bss->beacon_ie_len > 0 &&
275 !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
276 wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
277 wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for "
278 MACSTR, MAC2STR(bss->bssid));
279 ies = ies + ies_len;
280 ies_len = bss->beacon_ie_len;
281 }
282
283
284 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
285 bss->freq, &entry_ts, bss->level,
286 ies, ies_len) > 0)
287 break;
288 }
289
290 p2p_scan_res_handled(wpa_s->global->p2p);
291 }
292
293
294 static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit)
295 {
296 struct wpa_supplicant *wpa_s = work->wpa_s;
297 struct wpa_driver_scan_params *params = work->ctx;
298 int ret;
299
300 if (deinit) {
301 if (!work->started) {
302 wpa_scan_free_params(params);
303 return;
304 }
305
306 wpa_s->p2p_scan_work = NULL;
307 return;
308 }
309
310 ret = wpa_drv_scan(wpa_s, params);
311 wpa_scan_free_params(params);
312 work->ctx = NULL;
313 if (ret) {
314 radio_work_done(work);
315 p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
316 return;
317 }
318
319 p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
320 os_get_reltime(&wpa_s->scan_trigger_time);
321 wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
322 wpa_s->own_scan_requested = 1;
323 wpa_s->p2p_scan_work = work;
324 }
325
326
327 static int wpas_p2p_search_social_channel(struct wpa_supplicant *wpa_s,
328 int freq)
329 {
330 if (wpa_s->global->p2p_24ghz_social_channels &&
331 (freq == 2412 || freq == 2437 || freq == 2462)) {
332 /*
333 * Search all social channels regardless of whether these have
334 * been disabled for P2P operating channel use to avoid missing
335 * peers.
336 */
337 return 1;
338 }
339 return p2p_supported_freq(wpa_s->global->p2p, freq);
340 }
341
342
343 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
344 unsigned int num_req_dev_types,
345 const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
346 {
347 struct wpa_supplicant *wpa_s = ctx;
348 struct wpa_driver_scan_params *params = NULL;
349 struct wpabuf *wps_ie, *ies;
350 unsigned int num_channels = 0;
351 int social_channels_freq[] = { 2412, 2437, 2462, 60480 };
352 size_t ielen;
353 u8 *n, i;
354 unsigned int bands;
355
356 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
357 return -1;
358
359 if (wpa_s->p2p_scan_work) {
360 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending");
361 return -1;
362 }
363
364 params = os_zalloc(sizeof(*params));
365 if (params == NULL)
366 return -1;
367
368 /* P2P Wildcard SSID */
369 params->num_ssids = 1;
370 n = os_malloc(P2P_WILDCARD_SSID_LEN);
371 if (n == NULL)
372 goto fail;
373 os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
374 params->ssids[0].ssid = n;
375 params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
376
377 wpa_s->wps->dev.p2p = 1;
378 wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
379 wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
380 num_req_dev_types, req_dev_types);
381 if (wps_ie == NULL)
382 goto fail;
383
384 switch (type) {
385 case P2P_SCAN_SOCIAL:
386 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 1,
387 sizeof(int));
388 if (params->freqs == NULL)
389 goto fail;
390 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
391 if (wpas_p2p_search_social_channel(
392 wpa_s, social_channels_freq[i]))
393 params->freqs[num_channels++] =
394 social_channels_freq[i];
395 }
396 params->freqs[num_channels++] = 0;
397 break;
398 case P2P_SCAN_FULL:
399 break;
400 case P2P_SCAN_SPECIFIC:
401 params->freqs = os_calloc(2, sizeof(int));
402 if (params->freqs == NULL)
403 goto fail;
404 params->freqs[0] = freq;
405 params->freqs[1] = 0;
406 break;
407 case P2P_SCAN_SOCIAL_PLUS_ONE:
408 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 2,
409 sizeof(int));
410 if (params->freqs == NULL)
411 goto fail;
412 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
413 if (wpas_p2p_search_social_channel(
414 wpa_s, social_channels_freq[i]))
415 params->freqs[num_channels++] =
416 social_channels_freq[i];
417 }
418 if (p2p_supported_freq(wpa_s->global->p2p, freq))
419 params->freqs[num_channels++] = freq;
420 params->freqs[num_channels++] = 0;
421 break;
422 }
423
424 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
425 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
426 if (ies == NULL) {
427 wpabuf_free(wps_ie);
428 goto fail;
429 }
430 wpabuf_put_buf(ies, wps_ie);
431 wpabuf_free(wps_ie);
432
433 bands = wpas_get_bands(wpa_s, params->freqs);
434 p2p_scan_ie(wpa_s->global->p2p, ies, dev_id, bands);
435
436 params->p2p_probe = 1;
437 n = os_malloc(wpabuf_len(ies));
438 if (n == NULL) {
439 wpabuf_free(ies);
440 goto fail;
441 }
442 os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies));
443 params->extra_ies = n;
444 params->extra_ies_len = wpabuf_len(ies);
445 wpabuf_free(ies);
446
447 radio_remove_works(wpa_s, "p2p-scan", 0);
448 if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb,
449 params) < 0)
450 goto fail;
451 return 0;
452
453 fail:
454 wpa_scan_free_params(params);
455 return -1;
456 }
457
458
459 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
460 {
461 switch (p2p_group_interface) {
462 case P2P_GROUP_INTERFACE_PENDING:
463 return WPA_IF_P2P_GROUP;
464 case P2P_GROUP_INTERFACE_GO:
465 return WPA_IF_P2P_GO;
466 case P2P_GROUP_INTERFACE_CLIENT:
467 return WPA_IF_P2P_CLIENT;
468 }
469
470 return WPA_IF_P2P_GROUP;
471 }
472
473
474 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
475 const u8 *ssid,
476 size_t ssid_len, int *go)
477 {
478 struct wpa_ssid *s;
479
480 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
481 for (s = wpa_s->conf->ssid; s; s = s->next) {
482 if (s->disabled != 0 || !s->p2p_group ||
483 s->ssid_len != ssid_len ||
484 os_memcmp(ssid, s->ssid, ssid_len) != 0)
485 continue;
486 if (s->mode == WPAS_MODE_P2P_GO &&
487 s != wpa_s->current_ssid)
488 continue;
489 if (go)
490 *go = s->mode == WPAS_MODE_P2P_GO;
491 return wpa_s;
492 }
493 }
494
495 return NULL;
496 }
497
498
499 static void run_wpas_p2p_disconnect(void *eloop_ctx, void *timeout_ctx)
500 {
501 struct wpa_supplicant *wpa_s = eloop_ctx;
502 wpa_printf(MSG_DEBUG,
503 "P2P: Complete previously requested removal of %s",
504 wpa_s->ifname);
505 wpas_p2p_disconnect(wpa_s);
506 }
507
508
509 static int wpas_p2p_disconnect_safely(struct wpa_supplicant *wpa_s,
510 struct wpa_supplicant *calling_wpa_s)
511 {
512 if (calling_wpa_s == wpa_s && wpa_s &&
513 wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
514 /*
515 * The calling wpa_s instance is going to be removed. Do that
516 * from an eloop callback to keep the instance available until
517 * the caller has returned. This my be needed, e.g., to provide
518 * control interface responses on the per-interface socket.
519 */
520 if (eloop_register_timeout(0, 0, run_wpas_p2p_disconnect,
521 wpa_s, NULL) < 0)
522 return -1;
523 return 0;
524 }
525
526 return wpas_p2p_disconnect(wpa_s);
527 }
528
529
530 /* Determine total number of clients in active groups where we are the GO */
531 static unsigned int p2p_group_go_member_count(struct wpa_supplicant *wpa_s)
532 {
533 unsigned int count = 0;
534 struct wpa_ssid *s;
535
536 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
537 for (s = wpa_s->conf->ssid; s; s = s->next) {
538 wpa_printf(MSG_DEBUG,
539 "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d",
540 wpa_s, s, s->disabled, s->p2p_group,
541 s->mode);
542 if (!s->disabled && s->p2p_group &&
543 s->mode == WPAS_MODE_P2P_GO) {
544 count += p2p_get_group_num_members(
545 wpa_s->p2p_group);
546 }
547 }
548 }
549
550 return count;
551 }
552
553
554 static unsigned int p2p_is_active_persistent_group(struct wpa_supplicant *wpa_s)
555 {
556 return !wpa_s->p2p_mgmt && wpa_s->current_ssid &&
557 !wpa_s->current_ssid->disabled &&
558 wpa_s->current_ssid->p2p_group &&
559 wpa_s->current_ssid->p2p_persistent_group;
560 }
561
562
563 static unsigned int p2p_is_active_persistent_go(struct wpa_supplicant *wpa_s)
564 {
565 return p2p_is_active_persistent_group(wpa_s) &&
566 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO;
567 }
568
569
570 /* Find an interface for a P2P group where we are the GO */
571 static struct wpa_supplicant *
572 wpas_p2p_get_go_group(struct wpa_supplicant *wpa_s)
573 {
574 struct wpa_supplicant *save = NULL;
575
576 if (!wpa_s)
577 return NULL;
578
579 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
580 if (!p2p_is_active_persistent_go(wpa_s))
581 continue;
582
583 /* Prefer a group with connected clients */
584 if (p2p_get_group_num_members(wpa_s->p2p_group))
585 return wpa_s;
586 save = wpa_s;
587 }
588
589 /* No group with connected clients, so pick the one without (if any) */
590 return save;
591 }
592
593
594 static unsigned int p2p_is_active_persistent_cli(struct wpa_supplicant *wpa_s)
595 {
596 return p2p_is_active_persistent_group(wpa_s) &&
597 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
598 }
599
600
601 /* Find an interface for a P2P group where we are the P2P Client */
602 static struct wpa_supplicant *
603 wpas_p2p_get_cli_group(struct wpa_supplicant *wpa_s)
604 {
605 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
606 if (p2p_is_active_persistent_cli(wpa_s))
607 return wpa_s;
608 }
609
610 return NULL;
611 }
612
613
614 /* Find a persistent group where we are the GO */
615 static struct wpa_ssid *
616 wpas_p2p_get_persistent_go(struct wpa_supplicant *wpa_s)
617 {
618 struct wpa_ssid *s;
619
620 for (s = wpa_s->conf->ssid; s; s = s->next) {
621 if (s->disabled == 2 && s->mode == WPAS_MODE_P2P_GO)
622 return s;
623 }
624
625 return NULL;
626 }
627
628
629 static u8 p2ps_group_capability(void *ctx, u8 incoming, u8 role,
630 unsigned int *force_freq,
631 unsigned int *pref_freq)
632 {
633 struct wpa_supplicant *wpa_s = ctx;
634 struct wpa_ssid *s;
635 u8 conncap = P2PS_SETUP_NONE;
636 unsigned int owned_members = 0;
637 struct wpa_supplicant *go_wpa_s, *cli_wpa_s;
638 struct wpa_ssid *persistent_go;
639 int p2p_no_group_iface;
640 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
641
642 wpa_printf(MSG_DEBUG, "P2P: Conncap - in:%d role:%d", incoming, role);
643
644 if (force_freq)
645 *force_freq = 0;
646 if (pref_freq)
647 *pref_freq = 0;
648
649 size = P2P_MAX_PREF_CHANNELS;
650 if (force_freq && pref_freq &&
651 !wpas_p2p_setup_freqs(wpa_s, 0, (int *) force_freq,
652 (int *) pref_freq, 0, pref_freq_list, &size))
653 wpas_p2p_set_own_freq_preference(wpa_s,
654 *force_freq ? *force_freq :
655 *pref_freq);
656
657 /*
658 * For non-concurrent capable devices:
659 * If persistent_go, then no new.
660 * If GO, then no client.
661 * If client, then no GO.
662 */
663 go_wpa_s = wpas_p2p_get_go_group(wpa_s);
664 if (go_wpa_s)
665 owned_members = p2p_get_group_num_members(go_wpa_s->p2p_group);
666 persistent_go = wpas_p2p_get_persistent_go(wpa_s);
667 p2p_no_group_iface = !wpas_p2p_create_iface(wpa_s);
668 cli_wpa_s = wpas_p2p_get_cli_group(wpa_s);
669
670 wpa_printf(MSG_DEBUG,
671 "P2P: GO(iface)=%p members=%u CLI(iface)=%p persistent(ssid)=%p",
672 go_wpa_s, owned_members, cli_wpa_s, persistent_go);
673
674 /* If not concurrent, restrict our choices */
675 if (p2p_no_group_iface) {
676 wpa_printf(MSG_DEBUG, "P2P: p2p_no_group_iface");
677
678 if (cli_wpa_s)
679 return P2PS_SETUP_NONE;
680
681 if (go_wpa_s) {
682 if (role == P2PS_SETUP_CLIENT ||
683 incoming == P2PS_SETUP_GROUP_OWNER ||
684 p2p_client_limit_reached(go_wpa_s->p2p_group))
685 return P2PS_SETUP_NONE;
686
687 return P2PS_SETUP_GROUP_OWNER;
688 }
689
690 if (persistent_go) {
691 if (role == P2PS_SETUP_NONE || role == P2PS_SETUP_NEW) {
692 if (!incoming)
693 return P2PS_SETUP_GROUP_OWNER |
694 P2PS_SETUP_CLIENT;
695 if (incoming == P2PS_SETUP_NEW) {
696 u8 r;
697
698 if (os_get_random(&r, sizeof(r)) < 0 ||
699 (r & 1))
700 return P2PS_SETUP_CLIENT;
701 return P2PS_SETUP_GROUP_OWNER;
702 }
703 }
704 }
705 }
706
707 /* If a required role has been specified, handle it here */
708 if (role && role != P2PS_SETUP_NEW) {
709 switch (incoming) {
710 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
711 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
712 /*
713 * Peer has an active GO, so if the role allows it and
714 * we do not have any active roles, become client.
715 */
716 if ((role & P2PS_SETUP_CLIENT) && !go_wpa_s &&
717 !cli_wpa_s)
718 return P2PS_SETUP_CLIENT;
719
720 /* fall through */
721
722 case P2PS_SETUP_NONE:
723 case P2PS_SETUP_NEW:
724 conncap = role;
725 goto grp_owner;
726
727 case P2PS_SETUP_GROUP_OWNER:
728 /*
729 * Must be a complimentary role - cannot be a client to
730 * more than one peer.
731 */
732 if (incoming == role || cli_wpa_s)
733 return P2PS_SETUP_NONE;
734
735 return P2PS_SETUP_CLIENT;
736
737 case P2PS_SETUP_CLIENT:
738 /* Must be a complimentary role */
739 if (incoming != role) {
740 conncap = P2PS_SETUP_GROUP_OWNER;
741 goto grp_owner;
742 }
743
744 default:
745 return P2PS_SETUP_NONE;
746 }
747 }
748
749 /*
750 * For now, we only will support ownership of one group, and being a
751 * client of one group. Therefore, if we have either an existing GO
752 * group, or an existing client group, we will not do a new GO
753 * negotiation, but rather try to re-use the existing groups.
754 */
755 switch (incoming) {
756 case P2PS_SETUP_NONE:
757 case P2PS_SETUP_NEW:
758 if (cli_wpa_s)
759 conncap = P2PS_SETUP_GROUP_OWNER;
760 else if (!owned_members)
761 conncap = P2PS_SETUP_NEW;
762 else if (incoming == P2PS_SETUP_NONE)
763 conncap = P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT;
764 else
765 conncap = P2PS_SETUP_CLIENT;
766 break;
767
768 case P2PS_SETUP_CLIENT:
769 conncap = P2PS_SETUP_GROUP_OWNER;
770 break;
771
772 case P2PS_SETUP_GROUP_OWNER:
773 if (!cli_wpa_s)
774 conncap = P2PS_SETUP_CLIENT;
775 break;
776
777 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
778 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
779 if (cli_wpa_s)
780 conncap = P2PS_SETUP_GROUP_OWNER;
781 else {
782 u8 r;
783
784 if (os_get_random(&r, sizeof(r)) < 0 ||
785 (r & 1))
786 conncap = P2PS_SETUP_CLIENT;
787 else
788 conncap = P2PS_SETUP_GROUP_OWNER;
789 }
790 break;
791
792 default:
793 return P2PS_SETUP_NONE;
794 }
795
796 grp_owner:
797 if ((conncap & P2PS_SETUP_GROUP_OWNER) ||
798 (!incoming && (conncap & P2PS_SETUP_NEW))) {
799 if (go_wpa_s && p2p_client_limit_reached(go_wpa_s->p2p_group))
800 conncap &= ~P2PS_SETUP_GROUP_OWNER;
801
802 s = wpas_p2p_get_persistent_go(wpa_s);
803 if (!s && !go_wpa_s && p2p_no_group_iface) {
804 p2p_set_intended_addr(wpa_s->global->p2p,
805 wpa_s->p2p_mgmt ?
806 wpa_s->parent->own_addr :
807 wpa_s->own_addr);
808 } else if (!s && !go_wpa_s) {
809 if (wpas_p2p_add_group_interface(wpa_s,
810 WPA_IF_P2P_GO) < 0) {
811 wpa_printf(MSG_ERROR,
812 "P2P: Failed to allocate a new interface for the group");
813 return P2PS_SETUP_NONE;
814 }
815 wpa_s->global->pending_group_iface_for_p2ps = 1;
816 p2p_set_intended_addr(wpa_s->global->p2p,
817 wpa_s->pending_interface_addr);
818 }
819 }
820
821 return conncap;
822 }
823
824
825 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
826 enum p2p_group_removal_reason removal_reason)
827 {
828 struct wpa_ssid *ssid;
829 char *gtype;
830 const char *reason;
831
832 ssid = wpa_s->current_ssid;
833 if (ssid == NULL) {
834 /*
835 * The current SSID was not known, but there may still be a
836 * pending P2P group interface waiting for provisioning or a
837 * P2P group that is trying to reconnect.
838 */
839 ssid = wpa_s->conf->ssid;
840 while (ssid) {
841 if (ssid->p2p_group && ssid->disabled != 2)
842 break;
843 ssid = ssid->next;
844 }
845 if (ssid == NULL &&
846 wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
847 {
848 wpa_printf(MSG_ERROR, "P2P: P2P group interface "
849 "not found");
850 return -1;
851 }
852 }
853 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
854 gtype = "GO";
855 else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
856 (ssid && ssid->mode == WPAS_MODE_INFRA)) {
857 wpa_s->reassociate = 0;
858 wpa_s->disconnected = 1;
859 gtype = "client";
860 } else
861 gtype = "GO";
862
863 if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
864 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
865
866 if (os_strcmp(gtype, "client") == 0) {
867 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
868 if (eloop_is_timeout_registered(wpas_p2p_psk_failure_removal,
869 wpa_s, NULL)) {
870 wpa_printf(MSG_DEBUG,
871 "P2P: PSK failure removal was scheduled, so use PSK failure as reason for group removal");
872 removal_reason = P2P_GROUP_REMOVAL_PSK_FAILURE;
873 eloop_cancel_timeout(wpas_p2p_psk_failure_removal,
874 wpa_s, NULL);
875 }
876 }
877
878 if (wpa_s->cross_connect_in_use) {
879 wpa_s->cross_connect_in_use = 0;
880 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
881 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
882 wpa_s->ifname, wpa_s->cross_connect_uplink);
883 }
884 switch (removal_reason) {
885 case P2P_GROUP_REMOVAL_REQUESTED:
886 reason = " reason=REQUESTED";
887 break;
888 case P2P_GROUP_REMOVAL_FORMATION_FAILED:
889 reason = " reason=FORMATION_FAILED";
890 break;
891 case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
892 reason = " reason=IDLE";
893 break;
894 case P2P_GROUP_REMOVAL_UNAVAILABLE:
895 reason = " reason=UNAVAILABLE";
896 break;
897 case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
898 reason = " reason=GO_ENDING_SESSION";
899 break;
900 case P2P_GROUP_REMOVAL_PSK_FAILURE:
901 reason = " reason=PSK_FAILURE";
902 break;
903 case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
904 reason = " reason=FREQ_CONFLICT";
905 break;
906 default:
907 reason = "";
908 break;
909 }
910 if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
911 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
912 P2P_EVENT_GROUP_REMOVED "%s %s%s",
913 wpa_s->ifname, gtype, reason);
914 }
915
916 if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
917 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
918 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
919 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
920 if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
921 wpa_s->p2pdev, NULL) > 0) {
922 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
923 "timeout");
924 wpa_s->p2p_in_provisioning = 0;
925 wpas_p2p_group_formation_failed(wpa_s, 1);
926 }
927
928 wpa_s->p2p_in_invitation = 0;
929 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
930 eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, wpa_s, NULL);
931
932 /*
933 * Make sure wait for the first client does not remain active after the
934 * group has been removed.
935 */
936 wpa_s->global->p2p_go_wait_client.sec = 0;
937
938 if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
939 struct wpa_global *global;
940 char *ifname;
941 enum wpa_driver_if_type type;
942 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
943 wpa_s->ifname);
944 global = wpa_s->global;
945 ifname = os_strdup(wpa_s->ifname);
946 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
947 eloop_cancel_timeout(run_wpas_p2p_disconnect, wpa_s, NULL);
948 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
949 wpa_s = global->ifaces;
950 if (wpa_s && ifname)
951 wpa_drv_if_remove(wpa_s, type, ifname);
952 os_free(ifname);
953 return 1;
954 }
955
956 /*
957 * The primary interface was used for P2P group operations, so
958 * need to reset its p2pdev.
959 */
960 wpa_s->p2pdev = wpa_s->parent;
961
962 if (!wpa_s->p2p_go_group_formation_completed) {
963 wpa_s->global->p2p_group_formation = NULL;
964 wpa_s->p2p_in_provisioning = 0;
965 }
966
967 wpa_s->show_group_started = 0;
968 os_free(wpa_s->go_params);
969 wpa_s->go_params = NULL;
970
971 os_free(wpa_s->p2p_group_common_freqs);
972 wpa_s->p2p_group_common_freqs = NULL;
973 wpa_s->p2p_group_common_freqs_num = 0;
974
975 wpa_s->waiting_presence_resp = 0;
976
977 wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
978 if (ssid && (ssid->p2p_group ||
979 ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
980 (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
981 int id = ssid->id;
982 if (ssid == wpa_s->current_ssid) {
983 wpa_sm_set_config(wpa_s->wpa, NULL);
984 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
985 wpa_s->current_ssid = NULL;
986 }
987 /*
988 * Networks objects created during any P2P activities are not
989 * exposed out as they might/will confuse certain non-P2P aware
990 * applications since these network objects won't behave like
991 * regular ones.
992 *
993 * Likewise, we don't send out network removed signals for such
994 * network objects.
995 */
996 wpa_config_remove_network(wpa_s->conf, id);
997 wpa_supplicant_clear_status(wpa_s);
998 wpa_supplicant_cancel_sched_scan(wpa_s);
999 } else {
1000 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
1001 "found");
1002 }
1003 if (wpa_s->ap_iface)
1004 wpa_supplicant_ap_deinit(wpa_s);
1005 else
1006 wpa_drv_deinit_p2p_cli(wpa_s);
1007
1008 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1009
1010 return 0;
1011 }
1012
1013
1014 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
1015 u8 *go_dev_addr,
1016 const u8 *ssid, size_t ssid_len)
1017 {
1018 struct wpa_bss *bss;
1019 const u8 *bssid;
1020 struct wpabuf *p2p;
1021 u8 group_capab;
1022 const u8 *addr;
1023
1024 if (wpa_s->go_params)
1025 bssid = wpa_s->go_params->peer_interface_addr;
1026 else
1027 bssid = wpa_s->bssid;
1028
1029 bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
1030 if (bss == NULL && wpa_s->go_params &&
1031 !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
1032 bss = wpa_bss_get_p2p_dev_addr(
1033 wpa_s, wpa_s->go_params->peer_device_addr);
1034 if (bss == NULL) {
1035 u8 iface_addr[ETH_ALEN];
1036 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
1037 iface_addr) == 0)
1038 bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
1039 }
1040 if (bss == NULL) {
1041 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1042 "group is persistent - BSS " MACSTR " not found",
1043 MAC2STR(bssid));
1044 return 0;
1045 }
1046
1047 p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
1048 if (p2p == NULL)
1049 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
1050 P2P_IE_VENDOR_TYPE);
1051 if (p2p == NULL) {
1052 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1053 "group is persistent - BSS " MACSTR
1054 " did not include P2P IE", MAC2STR(bssid));
1055 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
1056 (u8 *) (bss + 1), bss->ie_len);
1057 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
1058 ((u8 *) bss + 1) + bss->ie_len,
1059 bss->beacon_ie_len);
1060 return 0;
1061 }
1062
1063 group_capab = p2p_get_group_capab(p2p);
1064 addr = p2p_get_go_dev_addr(p2p);
1065 wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
1066 "group_capab=0x%x", group_capab);
1067 if (addr) {
1068 os_memcpy(go_dev_addr, addr, ETH_ALEN);
1069 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
1070 MAC2STR(addr));
1071 } else
1072 os_memset(go_dev_addr, 0, ETH_ALEN);
1073 wpabuf_free(p2p);
1074
1075 wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
1076 "go_dev_addr=" MACSTR,
1077 MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
1078
1079 return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
1080 }
1081
1082
1083 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
1084 struct wpa_ssid *ssid,
1085 const u8 *go_dev_addr)
1086 {
1087 struct wpa_ssid *s;
1088 int changed = 0;
1089
1090 wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
1091 "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
1092 for (s = wpa_s->conf->ssid; s; s = s->next) {
1093 if (s->disabled == 2 &&
1094 os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
1095 s->ssid_len == ssid->ssid_len &&
1096 os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
1097 break;
1098 }
1099
1100 if (s) {
1101 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
1102 "entry");
1103 if (ssid->passphrase && !s->passphrase)
1104 changed = 1;
1105 else if (ssid->passphrase && s->passphrase &&
1106 os_strcmp(ssid->passphrase, s->passphrase) != 0)
1107 changed = 1;
1108 } else {
1109 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
1110 "entry");
1111 changed = 1;
1112 s = wpa_config_add_network(wpa_s->conf);
1113 if (s == NULL)
1114 return -1;
1115
1116 /*
1117 * Instead of network_added we emit persistent_group_added
1118 * notification. Also to keep the defense checks in
1119 * persistent_group obj registration method, we set the
1120 * relevant flags in s to designate it as a persistent group.
1121 */
1122 s->p2p_group = 1;
1123 s->p2p_persistent_group = 1;
1124 wpas_notify_persistent_group_added(wpa_s, s);
1125 wpa_config_set_network_defaults(s);
1126 }
1127
1128 s->p2p_group = 1;
1129 s->p2p_persistent_group = 1;
1130 s->disabled = 2;
1131 s->bssid_set = 1;
1132 os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
1133 s->mode = ssid->mode;
1134 s->auth_alg = WPA_AUTH_ALG_OPEN;
1135 s->key_mgmt = WPA_KEY_MGMT_PSK;
1136 s->proto = WPA_PROTO_RSN;
1137 s->pbss = ssid->pbss;
1138 s->pairwise_cipher = ssid->pbss ? WPA_CIPHER_GCMP : WPA_CIPHER_CCMP;
1139 s->export_keys = 1;
1140 if (ssid->passphrase) {
1141 os_free(s->passphrase);
1142 s->passphrase = os_strdup(ssid->passphrase);
1143 }
1144 if (ssid->psk_set) {
1145 s->psk_set = 1;
1146 os_memcpy(s->psk, ssid->psk, 32);
1147 }
1148 if (s->passphrase && !s->psk_set)
1149 wpa_config_update_psk(s);
1150 if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
1151 os_free(s->ssid);
1152 s->ssid = os_malloc(ssid->ssid_len);
1153 }
1154 if (s->ssid) {
1155 s->ssid_len = ssid->ssid_len;
1156 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
1157 }
1158 if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
1159 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
1160 wpa_s->global->add_psk = NULL;
1161 changed = 1;
1162 }
1163
1164 if (changed && wpa_s->conf->update_config &&
1165 wpa_config_write(wpa_s->confname, wpa_s->conf)) {
1166 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1167 }
1168
1169 return s->id;
1170 }
1171
1172
1173 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
1174 const u8 *addr)
1175 {
1176 struct wpa_ssid *ssid, *s;
1177 u8 *n;
1178 size_t i;
1179 int found = 0;
1180 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
1181
1182 ssid = wpa_s->current_ssid;
1183 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
1184 !ssid->p2p_persistent_group)
1185 return;
1186
1187 for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
1188 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
1189 continue;
1190
1191 if (s->ssid_len == ssid->ssid_len &&
1192 os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
1193 break;
1194 }
1195
1196 if (s == NULL)
1197 return;
1198
1199 for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
1200 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, addr,
1201 ETH_ALEN) != 0)
1202 continue;
1203
1204 if (i == s->num_p2p_clients - 1)
1205 return; /* already the most recent entry */
1206
1207 /* move the entry to mark it most recent */
1208 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
1209 s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
1210 (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
1211 os_memcpy(s->p2p_client_list +
1212 (s->num_p2p_clients - 1) * 2 * ETH_ALEN, addr,
1213 ETH_ALEN);
1214 os_memset(s->p2p_client_list +
1215 (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1216 0xff, ETH_ALEN);
1217 found = 1;
1218 break;
1219 }
1220
1221 if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
1222 n = os_realloc_array(s->p2p_client_list,
1223 s->num_p2p_clients + 1, 2 * ETH_ALEN);
1224 if (n == NULL)
1225 return;
1226 os_memcpy(n + s->num_p2p_clients * 2 * ETH_ALEN, addr,
1227 ETH_ALEN);
1228 os_memset(n + s->num_p2p_clients * 2 * ETH_ALEN + ETH_ALEN,
1229 0xff, ETH_ALEN);
1230 s->p2p_client_list = n;
1231 s->num_p2p_clients++;
1232 } else if (!found && s->p2p_client_list) {
1233 /* Not enough room for an additional entry - drop the oldest
1234 * entry */
1235 os_memmove(s->p2p_client_list,
1236 s->p2p_client_list + 2 * ETH_ALEN,
1237 (s->num_p2p_clients - 1) * 2 * ETH_ALEN);
1238 os_memcpy(s->p2p_client_list +
1239 (s->num_p2p_clients - 1) * 2 * ETH_ALEN,
1240 addr, ETH_ALEN);
1241 os_memset(s->p2p_client_list +
1242 (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1243 0xff, ETH_ALEN);
1244 }
1245
1246 if (p2p_wpa_s->conf->update_config &&
1247 wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
1248 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1249 }
1250
1251
1252 static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s,
1253 int go, struct wpa_ssid *ssid, int freq,
1254 const u8 *psk, const char *passphrase,
1255 const u8 *go_dev_addr, int persistent,
1256 const char *extra)
1257 {
1258 const char *ssid_txt;
1259 char psk_txt[65];
1260
1261 if (psk)
1262 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32);
1263 else
1264 psk_txt[0] = '\0';
1265
1266 if (ssid)
1267 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
1268 else
1269 ssid_txt = "";
1270
1271 if (passphrase && passphrase[0] == '\0')
1272 passphrase = NULL;
1273
1274 /*
1275 * Include PSK/passphrase only in the control interface message and
1276 * leave it out from the debug log entry.
1277 */
1278 wpa_msg_global_ctrl(wpa_s->p2pdev, MSG_INFO,
1279 P2P_EVENT_GROUP_STARTED
1280 "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr="
1281 MACSTR "%s%s",
1282 wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1283 psk ? " psk=" : "", psk_txt,
1284 passphrase ? " passphrase=\"" : "",
1285 passphrase ? passphrase : "",
1286 passphrase ? "\"" : "",
1287 MAC2STR(go_dev_addr),
1288 persistent ? " [PERSISTENT]" : "", extra);
1289 wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED
1290 "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s",
1291 wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1292 MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "",
1293 extra);
1294 }
1295
1296
1297 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
1298 int success, int already_deleted)
1299 {
1300 struct wpa_ssid *ssid;
1301 int client;
1302 int persistent;
1303 u8 go_dev_addr[ETH_ALEN];
1304 int network_id = -1;
1305
1306 /*
1307 * This callback is likely called for the main interface. Update wpa_s
1308 * to use the group interface if a new interface was created for the
1309 * group.
1310 */
1311 if (wpa_s->global->p2p_group_formation)
1312 wpa_s = wpa_s->global->p2p_group_formation;
1313 if (wpa_s->p2p_go_group_formation_completed) {
1314 wpa_s->global->p2p_group_formation = NULL;
1315 wpa_s->p2p_in_provisioning = 0;
1316 }
1317 wpa_s->p2p_in_invitation = 0;
1318 wpa_s->group_formation_reported = 1;
1319
1320 if (!success) {
1321 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
1322 P2P_EVENT_GROUP_FORMATION_FAILURE);
1323 wpas_notify_p2p_group_formation_failure(wpa_s, "");
1324 if (already_deleted)
1325 return;
1326 wpas_p2p_group_delete(wpa_s,
1327 P2P_GROUP_REMOVAL_FORMATION_FAILED);
1328 return;
1329 }
1330
1331 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
1332 P2P_EVENT_GROUP_FORMATION_SUCCESS);
1333
1334 ssid = wpa_s->current_ssid;
1335 if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1336 ssid->mode = WPAS_MODE_P2P_GO;
1337 p2p_group_notif_formation_done(wpa_s->p2p_group);
1338 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
1339 }
1340
1341 persistent = 0;
1342 if (ssid) {
1343 client = ssid->mode == WPAS_MODE_INFRA;
1344 if (ssid->mode == WPAS_MODE_P2P_GO) {
1345 persistent = ssid->p2p_persistent_group;
1346 os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
1347 ETH_ALEN);
1348 } else
1349 persistent = wpas_p2p_persistent_group(wpa_s,
1350 go_dev_addr,
1351 ssid->ssid,
1352 ssid->ssid_len);
1353 } else {
1354 client = wpa_s->p2p_group_interface ==
1355 P2P_GROUP_INTERFACE_CLIENT;
1356 os_memset(go_dev_addr, 0, ETH_ALEN);
1357 }
1358
1359 wpa_s->show_group_started = 0;
1360 if (client) {
1361 /*
1362 * Indicate event only after successfully completed 4-way
1363 * handshake, i.e., when the interface is ready for data
1364 * packets.
1365 */
1366 wpa_s->show_group_started = 1;
1367 } else {
1368 wpas_p2p_group_started(wpa_s, 1, ssid,
1369 ssid ? ssid->frequency : 0,
1370 ssid && ssid->passphrase == NULL &&
1371 ssid->psk_set ? ssid->psk : NULL,
1372 ssid ? ssid->passphrase : NULL,
1373 go_dev_addr, persistent, "");
1374 wpas_p2p_cross_connect_setup(wpa_s);
1375 wpas_p2p_set_group_idle_timeout(wpa_s);
1376 }
1377
1378 if (persistent)
1379 network_id = wpas_p2p_store_persistent_group(wpa_s->p2pdev,
1380 ssid, go_dev_addr);
1381 else {
1382 os_free(wpa_s->global->add_psk);
1383 wpa_s->global->add_psk = NULL;
1384 }
1385 if (network_id < 0 && ssid)
1386 network_id = ssid->id;
1387 if (!client) {
1388 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1389 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1390 }
1391 }
1392
1393
1394 struct send_action_work {
1395 unsigned int freq;
1396 u8 dst[ETH_ALEN];
1397 u8 src[ETH_ALEN];
1398 u8 bssid[ETH_ALEN];
1399 size_t len;
1400 unsigned int wait_time;
1401 u8 buf[0];
1402 };
1403
1404
1405 static void wpas_p2p_free_send_action_work(struct wpa_supplicant *wpa_s)
1406 {
1407 struct send_action_work *awork = wpa_s->p2p_send_action_work->ctx;
1408
1409 wpa_printf(MSG_DEBUG,
1410 "P2P: Free Action frame radio work @%p (freq=%u dst="
1411 MACSTR " src=" MACSTR " bssid=" MACSTR " wait_time=%u)",
1412 wpa_s->p2p_send_action_work, awork->freq,
1413 MAC2STR(awork->dst), MAC2STR(awork->src),
1414 MAC2STR(awork->bssid), awork->wait_time);
1415 wpa_hexdump(MSG_DEBUG, "P2P: Freeing pending Action frame",
1416 awork->buf, awork->len);
1417 os_free(awork);
1418 wpa_s->p2p_send_action_work->ctx = NULL;
1419 radio_work_done(wpa_s->p2p_send_action_work);
1420 wpa_s->p2p_send_action_work = NULL;
1421 }
1422
1423
1424 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
1425 void *timeout_ctx)
1426 {
1427 struct wpa_supplicant *wpa_s = eloop_ctx;
1428
1429 if (!wpa_s->p2p_send_action_work)
1430 return;
1431
1432 wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
1433 wpas_p2p_free_send_action_work(wpa_s);
1434 }
1435
1436
1437 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s)
1438 {
1439 if (wpa_s->p2p_send_action_work) {
1440 struct send_action_work *awork;
1441
1442 awork = wpa_s->p2p_send_action_work->ctx;
1443 wpa_printf(MSG_DEBUG,
1444 "P2P: Clear Action TX work @%p (wait_time=%u)",
1445 wpa_s->p2p_send_action_work, awork->wait_time);
1446 if (awork->wait_time == 0) {
1447 wpas_p2p_free_send_action_work(wpa_s);
1448 } else {
1449 /*
1450 * In theory, this should not be needed, but number of
1451 * places in the P2P code is still using non-zero wait
1452 * time for the last Action frame in the sequence and
1453 * some of these do not call send_action_done().
1454 */
1455 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1456 wpa_s, NULL);
1457 eloop_register_timeout(
1458 0, awork->wait_time * 1000,
1459 wpas_p2p_send_action_work_timeout,
1460 wpa_s, NULL);
1461 }
1462 }
1463 }
1464
1465
1466 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
1467 unsigned int freq,
1468 const u8 *dst, const u8 *src,
1469 const u8 *bssid,
1470 const u8 *data, size_t data_len,
1471 enum offchannel_send_action_result
1472 result)
1473 {
1474 enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
1475
1476 wpas_p2p_action_tx_clear(wpa_s);
1477
1478 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
1479 return;
1480
1481 switch (result) {
1482 case OFFCHANNEL_SEND_ACTION_SUCCESS:
1483 res = P2P_SEND_ACTION_SUCCESS;
1484 break;
1485 case OFFCHANNEL_SEND_ACTION_NO_ACK:
1486 res = P2P_SEND_ACTION_NO_ACK;
1487 break;
1488 case OFFCHANNEL_SEND_ACTION_FAILED:
1489 res = P2P_SEND_ACTION_FAILED;
1490 break;
1491 }
1492
1493 p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
1494
1495 if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
1496 wpa_s->pending_pd_before_join &&
1497 (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1498 os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
1499 wpa_s->p2p_fallback_to_go_neg) {
1500 wpa_s->pending_pd_before_join = 0;
1501 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
1502 "during p2p_connect-auto");
1503 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
1504 P2P_EVENT_FALLBACK_TO_GO_NEG
1505 "reason=no-ACK-to-PD-Req");
1506 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
1507 return;
1508 }
1509 }
1510
1511
1512 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1513 {
1514 struct wpa_supplicant *wpa_s = work->wpa_s;
1515 struct send_action_work *awork = work->ctx;
1516
1517 if (deinit) {
1518 if (work->started) {
1519 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1520 wpa_s, NULL);
1521 wpa_s->p2p_send_action_work = NULL;
1522 offchannel_send_action_done(wpa_s);
1523 }
1524 os_free(awork);
1525 return;
1526 }
1527
1528 if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1529 awork->bssid, awork->buf, awork->len,
1530 awork->wait_time,
1531 wpas_p2p_send_action_tx_status, 1) < 0) {
1532 os_free(awork);
1533 radio_work_done(work);
1534 return;
1535 }
1536 wpa_s->p2p_send_action_work = work;
1537 }
1538
1539
1540 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1541 unsigned int freq, const u8 *dst,
1542 const u8 *src, const u8 *bssid, const u8 *buf,
1543 size_t len, unsigned int wait_time)
1544 {
1545 struct send_action_work *awork;
1546
1547 if (wpa_s->p2p_send_action_work) {
1548 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1549 return -1;
1550 }
1551
1552 awork = os_zalloc(sizeof(*awork) + len);
1553 if (awork == NULL)
1554 return -1;
1555
1556 awork->freq = freq;
1557 os_memcpy(awork->dst, dst, ETH_ALEN);
1558 os_memcpy(awork->src, src, ETH_ALEN);
1559 os_memcpy(awork->bssid, bssid, ETH_ALEN);
1560 awork->len = len;
1561 awork->wait_time = wait_time;
1562 os_memcpy(awork->buf, buf, len);
1563
1564 if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1565 wpas_send_action_cb, awork) < 0) {
1566 os_free(awork);
1567 return -1;
1568 }
1569
1570 return 0;
1571 }
1572
1573
1574 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1575 const u8 *src, const u8 *bssid, const u8 *buf,
1576 size_t len, unsigned int wait_time)
1577 {
1578 struct wpa_supplicant *wpa_s = ctx;
1579 int listen_freq = -1, send_freq = -1;
1580
1581 if (wpa_s->p2p_listen_work)
1582 listen_freq = wpa_s->p2p_listen_work->freq;
1583 if (wpa_s->p2p_send_action_work)
1584 send_freq = wpa_s->p2p_send_action_work->freq;
1585 if (listen_freq != (int) freq && send_freq != (int) freq) {
1586 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1587 listen_freq, send_freq);
1588 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1589 len, wait_time);
1590 }
1591
1592 wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1593 return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1594 wait_time,
1595 wpas_p2p_send_action_tx_status, 1);
1596 }
1597
1598
1599 static void wpas_send_action_done(void *ctx)
1600 {
1601 struct wpa_supplicant *wpa_s = ctx;
1602
1603 if (wpa_s->p2p_send_action_work) {
1604 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1605 wpa_s, NULL);
1606 os_free(wpa_s->p2p_send_action_work->ctx);
1607 radio_work_done(wpa_s->p2p_send_action_work);
1608 wpa_s->p2p_send_action_work = NULL;
1609 }
1610
1611 offchannel_send_action_done(wpa_s);
1612 }
1613
1614
1615 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1616 struct p2p_go_neg_results *params)
1617 {
1618 if (wpa_s->go_params == NULL) {
1619 wpa_s->go_params = os_malloc(sizeof(*params));
1620 if (wpa_s->go_params == NULL)
1621 return -1;
1622 }
1623 os_memcpy(wpa_s->go_params, params, sizeof(*params));
1624 return 0;
1625 }
1626
1627
1628 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1629 struct p2p_go_neg_results *res)
1630 {
1631 wpa_s->group_formation_reported = 0;
1632 wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1633 " dev_addr " MACSTR " wps_method %d",
1634 MAC2STR(res->peer_interface_addr),
1635 MAC2STR(res->peer_device_addr), res->wps_method);
1636 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1637 res->ssid, res->ssid_len);
1638 wpa_supplicant_ap_deinit(wpa_s);
1639 wpas_copy_go_neg_results(wpa_s, res);
1640 if (res->wps_method == WPS_PBC) {
1641 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1642 #ifdef CONFIG_WPS_NFC
1643 } else if (res->wps_method == WPS_NFC) {
1644 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1645 res->peer_interface_addr,
1646 wpa_s->p2pdev->p2p_oob_dev_pw,
1647 wpa_s->p2pdev->p2p_oob_dev_pw_id, 1,
1648 wpa_s->p2pdev->p2p_oob_dev_pw_id ==
1649 DEV_PW_NFC_CONNECTION_HANDOVER ?
1650 wpa_s->p2pdev->p2p_peer_oob_pubkey_hash :
1651 NULL,
1652 NULL, 0, 0);
1653 #endif /* CONFIG_WPS_NFC */
1654 } else {
1655 u16 dev_pw_id = DEV_PW_DEFAULT;
1656 if (wpa_s->p2p_wps_method == WPS_P2PS)
1657 dev_pw_id = DEV_PW_P2PS_DEFAULT;
1658 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1659 dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1660 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1661 wpa_s->p2p_pin, 1, dev_pw_id);
1662 }
1663 }
1664
1665
1666 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1667 struct wpa_ssid *ssid)
1668 {
1669 struct wpa_ssid *persistent;
1670 struct psk_list_entry *psk;
1671 struct hostapd_data *hapd;
1672
1673 if (!wpa_s->ap_iface)
1674 return;
1675
1676 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, NULL, ssid->ssid,
1677 ssid->ssid_len);
1678 if (persistent == NULL)
1679 return;
1680
1681 hapd = wpa_s->ap_iface->bss[0];
1682
1683 dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1684 list) {
1685 struct hostapd_wpa_psk *hpsk;
1686
1687 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1688 MACSTR " psk=%d",
1689 MAC2STR(psk->addr), psk->p2p);
1690 hpsk = os_zalloc(sizeof(*hpsk));
1691 if (hpsk == NULL)
1692 break;
1693 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1694 if (psk->p2p)
1695 os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1696 else
1697 os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1698 hpsk->next = hapd->conf->ssid.wpa_psk;
1699 hapd->conf->ssid.wpa_psk = hpsk;
1700 }
1701 }
1702
1703
1704 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s)
1705 {
1706 unsigned int i;
1707
1708 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies (len=%u):",
1709 wpa_s->p2p_group_common_freqs_num);
1710
1711 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++)
1712 wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d",
1713 i, wpa_s->p2p_group_common_freqs[i]);
1714 }
1715
1716
1717 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s,
1718 struct p2p_go_neg_results *params)
1719 {
1720 unsigned int i, len = int_array_len(wpa_s->go_params->freq_list);
1721
1722 wpa_s->p2p_group_common_freqs_num = 0;
1723 os_free(wpa_s->p2p_group_common_freqs);
1724 wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int));
1725 if (!wpa_s->p2p_group_common_freqs)
1726 return;
1727
1728 for (i = 0; i < len; i++) {
1729 if (!wpa_s->go_params->freq_list[i])
1730 break;
1731 wpa_s->p2p_group_common_freqs[i] =
1732 wpa_s->go_params->freq_list[i];
1733 }
1734 wpa_s->p2p_group_common_freqs_num = i;
1735 }
1736
1737
1738 static void p2p_config_write(struct wpa_supplicant *wpa_s)
1739 {
1740 #ifndef CONFIG_NO_CONFIG_WRITE
1741 if (wpa_s->p2pdev->conf->update_config &&
1742 wpa_config_write(wpa_s->p2pdev->confname, wpa_s->p2pdev->conf))
1743 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1744 #endif /* CONFIG_NO_CONFIG_WRITE */
1745 }
1746
1747
1748 static void p2p_go_configured(void *ctx, void *data)
1749 {
1750 struct wpa_supplicant *wpa_s = ctx;
1751 struct p2p_go_neg_results *params = data;
1752 struct wpa_ssid *ssid;
1753 int network_id = -1;
1754
1755 wpa_s->ap_configured_cb = NULL;
1756 wpa_s->ap_configured_cb_ctx = NULL;
1757 wpa_s->ap_configured_cb_data = NULL;
1758 if (!wpa_s->go_params) {
1759 wpa_printf(MSG_ERROR,
1760 "P2P: p2p_go_configured() called with wpa_s->go_params == NULL");
1761 return;
1762 }
1763
1764 p2p_go_save_group_common_freqs(wpa_s, params);
1765 p2p_go_dump_common_freqs(wpa_s);
1766
1767 ssid = wpa_s->current_ssid;
1768 if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1769 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1770 if (wpa_s->global->p2p_group_formation == wpa_s)
1771 wpa_s->global->p2p_group_formation = NULL;
1772 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency,
1773 params->passphrase[0] == '\0' ?
1774 params->psk : NULL,
1775 params->passphrase,
1776 wpa_s->global->p2p_dev_addr,
1777 params->persistent_group, "");
1778 wpa_s->group_formation_reported = 1;
1779
1780 if (wpa_s->p2pdev->p2ps_method_config_any) {
1781 if (is_zero_ether_addr(wpa_s->p2pdev->p2ps_join_addr)) {
1782 wpa_dbg(wpa_s, MSG_DEBUG,
1783 "P2PS: Setting default PIN for ANY");
1784 wpa_supplicant_ap_wps_pin(wpa_s, NULL,
1785 "12345670", NULL, 0,
1786 0);
1787 } else {
1788 wpa_dbg(wpa_s, MSG_DEBUG,
1789 "P2PS: Setting default PIN for " MACSTR,
1790 MAC2STR(wpa_s->p2pdev->p2ps_join_addr));
1791 wpa_supplicant_ap_wps_pin(
1792 wpa_s, wpa_s->p2pdev->p2ps_join_addr,
1793 "12345670", NULL, 0, 0);
1794 }
1795 wpa_s->p2pdev->p2ps_method_config_any = 0;
1796 }
1797
1798 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1799 if (params->persistent_group) {
1800 network_id = wpas_p2p_store_persistent_group(
1801 wpa_s->p2pdev, ssid,
1802 wpa_s->global->p2p_dev_addr);
1803 wpas_p2p_add_psk_list(wpa_s, ssid);
1804 }
1805 if (network_id < 0)
1806 network_id = ssid->id;
1807 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1808 wpas_p2p_cross_connect_setup(wpa_s);
1809 wpas_p2p_set_group_idle_timeout(wpa_s);
1810
1811 if (wpa_s->p2p_first_connection_timeout) {
1812 wpa_dbg(wpa_s, MSG_DEBUG,
1813 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1814 wpa_s->p2p_first_connection_timeout);
1815 wpa_s->p2p_go_group_formation_completed = 0;
1816 wpa_s->global->p2p_group_formation = wpa_s;
1817 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1818 wpa_s->p2pdev, NULL);
1819 eloop_register_timeout(
1820 wpa_s->p2p_first_connection_timeout, 0,
1821 wpas_p2p_group_formation_timeout,
1822 wpa_s->p2pdev, NULL);
1823 }
1824
1825 return;
1826 }
1827
1828 wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1829 if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1830 params->peer_interface_addr)) {
1831 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1832 "filtering");
1833 return;
1834 }
1835 if (params->wps_method == WPS_PBC) {
1836 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1837 params->peer_device_addr);
1838 #ifdef CONFIG_WPS_NFC
1839 } else if (params->wps_method == WPS_NFC) {
1840 if (wpa_s->p2pdev->p2p_oob_dev_pw_id !=
1841 DEV_PW_NFC_CONNECTION_HANDOVER &&
1842 !wpa_s->p2pdev->p2p_oob_dev_pw) {
1843 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1844 return;
1845 }
1846 wpas_ap_wps_add_nfc_pw(
1847 wpa_s, wpa_s->p2pdev->p2p_oob_dev_pw_id,
1848 wpa_s->p2pdev->p2p_oob_dev_pw,
1849 wpa_s->p2pdev->p2p_peer_oob_pk_hash_known ?
1850 wpa_s->p2pdev->p2p_peer_oob_pubkey_hash : NULL);
1851 #endif /* CONFIG_WPS_NFC */
1852 } else if (wpa_s->p2p_pin[0])
1853 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1854 wpa_s->p2p_pin, NULL, 0, 0);
1855 os_free(wpa_s->go_params);
1856 wpa_s->go_params = NULL;
1857 }
1858
1859
1860 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1861 struct p2p_go_neg_results *params,
1862 int group_formation)
1863 {
1864 struct wpa_ssid *ssid;
1865
1866 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1867 if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1868 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1869 "results");
1870 return;
1871 }
1872
1873 ssid = wpa_config_add_network(wpa_s->conf);
1874 if (ssid == NULL) {
1875 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1876 return;
1877 }
1878
1879 wpa_s->show_group_started = 0;
1880 wpa_s->p2p_go_group_formation_completed = 0;
1881 wpa_s->group_formation_reported = 0;
1882 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1883
1884 wpa_config_set_network_defaults(ssid);
1885 ssid->temporary = 1;
1886 ssid->p2p_group = 1;
1887 ssid->p2p_persistent_group = params->persistent_group;
1888 ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1889 WPAS_MODE_P2P_GO;
1890 ssid->frequency = params->freq;
1891 ssid->ht40 = params->ht40;
1892 ssid->vht = params->vht;
1893 ssid->max_oper_chwidth = params->max_oper_chwidth;
1894 ssid->vht_center_freq2 = params->vht_center_freq2;
1895 ssid->ssid = os_zalloc(params->ssid_len + 1);
1896 if (ssid->ssid) {
1897 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1898 ssid->ssid_len = params->ssid_len;
1899 }
1900 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1901 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1902 ssid->proto = WPA_PROTO_RSN;
1903 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1904 ssid->group_cipher = WPA_CIPHER_CCMP;
1905 if (params->freq > 56160) {
1906 /*
1907 * Enable GCMP instead of CCMP as pairwise_cipher and
1908 * group_cipher in 60 GHz.
1909 */
1910 ssid->pairwise_cipher = WPA_CIPHER_GCMP;
1911 ssid->group_cipher = WPA_CIPHER_GCMP;
1912 /* P2P GO in 60 GHz is always a PCP (PBSS) */
1913 ssid->pbss = 1;
1914 }
1915 if (os_strlen(params->passphrase) > 0) {
1916 ssid->passphrase = os_strdup(params->passphrase);
1917 if (ssid->passphrase == NULL) {
1918 wpa_msg_global(wpa_s, MSG_ERROR,
1919 "P2P: Failed to copy passphrase for GO");
1920 wpa_config_remove_network(wpa_s->conf, ssid->id);
1921 return;
1922 }
1923 } else
1924 ssid->passphrase = NULL;
1925 ssid->psk_set = params->psk_set;
1926 if (ssid->psk_set)
1927 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1928 else if (ssid->passphrase)
1929 wpa_config_update_psk(ssid);
1930 ssid->ap_max_inactivity = wpa_s->p2pdev->conf->p2p_go_max_inactivity;
1931
1932 wpa_s->ap_configured_cb = p2p_go_configured;
1933 wpa_s->ap_configured_cb_ctx = wpa_s;
1934 wpa_s->ap_configured_cb_data = wpa_s->go_params;
1935 wpa_s->scan_req = NORMAL_SCAN_REQ;
1936 wpa_s->connect_without_scan = ssid;
1937 wpa_s->reassociate = 1;
1938 wpa_s->disconnected = 0;
1939 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1940 "start GO)");
1941 wpa_supplicant_req_scan(wpa_s, 0, 0);
1942 }
1943
1944
1945 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1946 const struct wpa_supplicant *src)
1947 {
1948 struct wpa_config *d;
1949 const struct wpa_config *s;
1950
1951 d = dst->conf;
1952 s = src->conf;
1953
1954 #define C(n) if (s->n) d->n = os_strdup(s->n)
1955 C(device_name);
1956 C(manufacturer);
1957 C(model_name);
1958 C(model_number);
1959 C(serial_number);
1960 C(config_methods);
1961 #undef C
1962
1963 os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1964 os_memcpy(d->sec_device_type, s->sec_device_type,
1965 sizeof(d->sec_device_type));
1966 d->num_sec_device_types = s->num_sec_device_types;
1967
1968 d->p2p_group_idle = s->p2p_group_idle;
1969 d->p2p_go_freq_change_policy = s->p2p_go_freq_change_policy;
1970 d->p2p_intra_bss = s->p2p_intra_bss;
1971 d->persistent_reconnect = s->persistent_reconnect;
1972 d->max_num_sta = s->max_num_sta;
1973 d->pbc_in_m1 = s->pbc_in_m1;
1974 d->ignore_old_scan_res = s->ignore_old_scan_res;
1975 d->beacon_int = s->beacon_int;
1976 d->dtim_period = s->dtim_period;
1977 d->p2p_go_ctwindow = s->p2p_go_ctwindow;
1978 d->disassoc_low_ack = s->disassoc_low_ack;
1979 d->disable_scan_offload = s->disable_scan_offload;
1980 d->passive_scan = s->passive_scan;
1981
1982 if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) {
1983 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
1984 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
1985 }
1986 d->p2p_cli_probe = s->p2p_cli_probe;
1987 }
1988
1989
1990 static void wpas_p2p_clone_config_dh(struct wpa_supplicant *dst,
1991 const struct wpa_supplicant *src)
1992 {
1993 struct wpa_config *d;
1994 const struct wpa_config *s;
1995
1996 d = dst->conf;
1997 s = src->conf;
1998
1999 if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey &&
2000 !d->wps_nfc_dh_privkey && !d->wps_nfc_dh_pubkey) {
2001 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
2002 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
2003 }
2004 }
2005
2006
2007 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
2008 char *ifname, size_t len)
2009 {
2010 char *ifname_ptr = wpa_s->ifname;
2011
2012 if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
2013 os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
2014 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
2015 }
2016
2017 os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
2018 if (os_strlen(ifname) >= IFNAMSIZ &&
2019 os_strlen(wpa_s->ifname) < IFNAMSIZ) {
2020 int res;
2021
2022 /* Try to avoid going over the IFNAMSIZ length limit */
2023 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
2024 if (os_snprintf_error(len, res) && len)
2025 ifname[len - 1] = '\0';
2026 }
2027 }
2028
2029
2030 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
2031 enum wpa_driver_if_type type)
2032 {
2033 char ifname[120], force_ifname[120];
2034
2035 if (wpa_s->pending_interface_name[0]) {
2036 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
2037 "- skip creation of a new one");
2038 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
2039 wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
2040 "unknown?! ifname='%s'",
2041 wpa_s->pending_interface_name);
2042 return -1;
2043 }
2044 return 0;
2045 }
2046
2047 wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
2048 force_ifname[0] = '\0';
2049
2050 wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
2051 ifname);
2052 wpa_s->p2p_group_idx++;
2053
2054 wpa_s->pending_interface_type = type;
2055 if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
2056 wpa_s->pending_interface_addr, NULL) < 0) {
2057 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
2058 "interface");
2059 return -1;
2060 }
2061
2062 if (force_ifname[0]) {
2063 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
2064 force_ifname);
2065 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
2066 sizeof(wpa_s->pending_interface_name));
2067 } else
2068 os_strlcpy(wpa_s->pending_interface_name, ifname,
2069 sizeof(wpa_s->pending_interface_name));
2070 wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
2071 MACSTR, wpa_s->pending_interface_name,
2072 MAC2STR(wpa_s->pending_interface_addr));
2073
2074 return 0;
2075 }
2076
2077
2078 static void wpas_p2p_remove_pending_group_interface(
2079 struct wpa_supplicant *wpa_s)
2080 {
2081 if (!wpa_s->pending_interface_name[0] ||
2082 is_zero_ether_addr(wpa_s->pending_interface_addr))
2083 return; /* No pending virtual interface */
2084
2085 wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
2086 wpa_s->pending_interface_name);
2087 wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
2088 wpa_s->pending_interface_name);
2089 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2090 wpa_s->pending_interface_name[0] = '\0';
2091 wpa_s->global->pending_group_iface_for_p2ps = 0;
2092 }
2093
2094
2095 static struct wpa_supplicant *
2096 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
2097 {
2098 struct wpa_interface iface;
2099 struct wpa_supplicant *group_wpa_s;
2100
2101 if (!wpa_s->pending_interface_name[0]) {
2102 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
2103 if (!wpas_p2p_create_iface(wpa_s))
2104 return NULL;
2105 /*
2106 * Something has forced us to remove the pending interface; try
2107 * to create a new one and hope for the best that we will get
2108 * the same local address.
2109 */
2110 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
2111 WPA_IF_P2P_CLIENT) < 0)
2112 return NULL;
2113 }
2114
2115 os_memset(&iface, 0, sizeof(iface));
2116 iface.ifname = wpa_s->pending_interface_name;
2117 iface.driver = wpa_s->driver->name;
2118 if (wpa_s->conf->ctrl_interface == NULL &&
2119 wpa_s->parent != wpa_s &&
2120 wpa_s->p2p_mgmt &&
2121 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
2122 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
2123 else
2124 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
2125 iface.driver_param = wpa_s->conf->driver_param;
2126 group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
2127 if (group_wpa_s == NULL) {
2128 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
2129 "wpa_supplicant interface");
2130 return NULL;
2131 }
2132 wpa_s->pending_interface_name[0] = '\0';
2133 group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
2134 P2P_GROUP_INTERFACE_CLIENT;
2135 wpa_s->global->p2p_group_formation = group_wpa_s;
2136 wpa_s->global->pending_group_iface_for_p2ps = 0;
2137
2138 wpas_p2p_clone_config(group_wpa_s, wpa_s);
2139
2140 return group_wpa_s;
2141 }
2142
2143
2144 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
2145 void *timeout_ctx)
2146 {
2147 struct wpa_supplicant *wpa_s = eloop_ctx;
2148 wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
2149 wpas_p2p_group_formation_failed(wpa_s, 0);
2150 }
2151
2152
2153 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
2154 int already_deleted)
2155 {
2156 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2157 wpa_s->p2pdev, NULL);
2158 if (wpa_s->global->p2p)
2159 p2p_group_formation_failed(wpa_s->global->p2p);
2160 wpas_group_formation_completed(wpa_s, 0, already_deleted);
2161 }
2162
2163
2164 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
2165 {
2166 wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
2167 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2168 wpa_s->p2pdev, NULL);
2169 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2170 wpa_s->p2pdev, NULL);
2171 wpa_s->global->p2p_fail_on_wps_complete = 0;
2172 }
2173
2174
2175 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
2176 {
2177 if (wpa_s->global->p2p_group_formation != wpa_s)
2178 return;
2179 /* Speed up group formation timeout since this cannot succeed */
2180 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2181 wpa_s->p2pdev, NULL);
2182 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2183 wpa_s->p2pdev, NULL);
2184 }
2185
2186
2187 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
2188 {
2189 struct wpa_supplicant *wpa_s = ctx;
2190 struct wpa_supplicant *group_wpa_s;
2191
2192 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2193 wpa_drv_cancel_remain_on_channel(wpa_s);
2194 wpa_s->off_channel_freq = 0;
2195 wpa_s->roc_waiting_drv_freq = 0;
2196 }
2197
2198 if (res->status) {
2199 wpa_msg_global(wpa_s, MSG_INFO,
2200 P2P_EVENT_GO_NEG_FAILURE "status=%d",
2201 res->status);
2202 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2203 wpas_p2p_remove_pending_group_interface(wpa_s);
2204 return;
2205 }
2206
2207 if (!res->role_go) {
2208 /* Inform driver of the operating channel of GO. */
2209 wpa_drv_set_prob_oper_freq(wpa_s, res->freq);
2210 }
2211
2212 if (wpa_s->p2p_go_ht40)
2213 res->ht40 = 1;
2214 if (wpa_s->p2p_go_vht)
2215 res->vht = 1;
2216 res->max_oper_chwidth = wpa_s->p2p_go_max_oper_chwidth;
2217 res->vht_center_freq2 = wpa_s->p2p_go_vht_center_freq2;
2218
2219 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
2220 "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
2221 " wps_method=%s",
2222 res->role_go ? "GO" : "client", res->freq, res->ht40,
2223 MAC2STR(res->peer_device_addr),
2224 MAC2STR(res->peer_interface_addr),
2225 p2p_wps_method_text(res->wps_method));
2226 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2227
2228 if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
2229 struct wpa_ssid *ssid;
2230 ssid = wpa_config_get_network(wpa_s->conf,
2231 wpa_s->p2p_persistent_id);
2232 if (ssid && ssid->disabled == 2 &&
2233 ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
2234 size_t len = os_strlen(ssid->passphrase);
2235 wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
2236 "on requested persistent group");
2237 os_memcpy(res->passphrase, ssid->passphrase, len);
2238 res->passphrase[len] = '\0';
2239 }
2240 }
2241
2242 if (wpa_s->create_p2p_iface) {
2243 group_wpa_s =
2244 wpas_p2p_init_group_interface(wpa_s, res->role_go);
2245 if (group_wpa_s == NULL) {
2246 wpas_p2p_remove_pending_group_interface(wpa_s);
2247 eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
2248 wpa_s, NULL);
2249 wpas_p2p_group_formation_failed(wpa_s, 1);
2250 return;
2251 }
2252 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2253 wpa_s->pending_interface_name[0] = '\0';
2254 } else {
2255 group_wpa_s = wpa_s->parent;
2256 wpa_s->global->p2p_group_formation = group_wpa_s;
2257 if (group_wpa_s != wpa_s)
2258 wpas_p2p_clone_config_dh(group_wpa_s, wpa_s);
2259 }
2260
2261 group_wpa_s->p2p_in_provisioning = 1;
2262 group_wpa_s->p2pdev = wpa_s;
2263 if (group_wpa_s != wpa_s) {
2264 os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
2265 sizeof(group_wpa_s->p2p_pin));
2266 group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
2267 }
2268 if (res->role_go) {
2269 wpas_start_wps_go(group_wpa_s, res, 1);
2270 } else {
2271 os_get_reltime(&group_wpa_s->scan_min_time);
2272 wpas_start_wps_enrollee(group_wpa_s, res);
2273 }
2274
2275 wpa_s->p2p_long_listen = 0;
2276 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2277
2278 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2279 eloop_register_timeout(15 + res->peer_config_timeout / 100,
2280 (res->peer_config_timeout % 100) * 10000,
2281 wpas_p2p_group_formation_timeout, wpa_s, NULL);
2282 }
2283
2284
2285 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id,
2286 u8 go_intent)
2287 {
2288 struct wpa_supplicant *wpa_s = ctx;
2289 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
2290 " dev_passwd_id=%u go_intent=%u", MAC2STR(src),
2291 dev_passwd_id, go_intent);
2292
2293 wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id, go_intent);
2294 }
2295
2296
2297 static void wpas_dev_found(void *ctx, const u8 *addr,
2298 const struct p2p_peer_info *info,
2299 int new_device)
2300 {
2301 #ifndef CONFIG_NO_STDOUT_DEBUG
2302 struct wpa_supplicant *wpa_s = ctx;
2303 char devtype[WPS_DEV_TYPE_BUFSIZE];
2304 char *wfd_dev_info_hex = NULL;
2305
2306 #ifdef CONFIG_WIFI_DISPLAY
2307 wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
2308 WFD_SUBELEM_DEVICE_INFO);
2309 #endif /* CONFIG_WIFI_DISPLAY */
2310
2311 if (info->p2ps_instance) {
2312 char str[256];
2313 const u8 *buf = wpabuf_head(info->p2ps_instance);
2314 size_t len = wpabuf_len(info->p2ps_instance);
2315
2316 while (len) {
2317 u32 id;
2318 u16 methods;
2319 u8 str_len;
2320
2321 if (len < 4 + 2 + 1)
2322 break;
2323 id = WPA_GET_LE32(buf);
2324 buf += sizeof(u32);
2325 methods = WPA_GET_BE16(buf);
2326 buf += sizeof(u16);
2327 str_len = *buf++;
2328 if (str_len > len - 4 - 2 - 1)
2329 break;
2330 os_memcpy(str, buf, str_len);
2331 str[str_len] = '\0';
2332 buf += str_len;
2333 len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8);
2334
2335 wpa_msg_global(wpa_s, MSG_INFO,
2336 P2P_EVENT_DEVICE_FOUND MACSTR
2337 " p2p_dev_addr=" MACSTR
2338 " pri_dev_type=%s name='%s'"
2339 " config_methods=0x%x"
2340 " dev_capab=0x%x"
2341 " group_capab=0x%x"
2342 " adv_id=%x asp_svc=%s%s",
2343 MAC2STR(addr),
2344 MAC2STR(info->p2p_device_addr),
2345 wps_dev_type_bin2str(
2346 info->pri_dev_type,
2347 devtype, sizeof(devtype)),
2348 info->device_name, methods,
2349 info->dev_capab, info->group_capab,
2350 id, str,
2351 info->vendor_elems ?
2352 " vendor_elems=1" : "");
2353 }
2354 goto done;
2355 }
2356
2357 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
2358 " p2p_dev_addr=" MACSTR
2359 " pri_dev_type=%s name='%s' config_methods=0x%x "
2360 "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d",
2361 MAC2STR(addr), MAC2STR(info->p2p_device_addr),
2362 wps_dev_type_bin2str(info->pri_dev_type, devtype,
2363 sizeof(devtype)),
2364 info->device_name, info->config_methods,
2365 info->dev_capab, info->group_capab,
2366 wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
2367 wfd_dev_info_hex ? wfd_dev_info_hex : "",
2368 info->vendor_elems ? " vendor_elems=1" : "",
2369 new_device);
2370
2371 done:
2372 os_free(wfd_dev_info_hex);
2373 #endif /* CONFIG_NO_STDOUT_DEBUG */
2374
2375 wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
2376 }
2377
2378
2379 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
2380 {
2381 struct wpa_supplicant *wpa_s = ctx;
2382
2383 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
2384 "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
2385
2386 wpas_notify_p2p_device_lost(wpa_s, dev_addr);
2387 }
2388
2389
2390 static void wpas_find_stopped(void *ctx)
2391 {
2392 struct wpa_supplicant *wpa_s = ctx;
2393
2394 if (wpa_s->p2p_scan_work && wpas_abort_ongoing_scan(wpa_s) < 0)
2395 wpa_printf(MSG_DEBUG, "P2P: Abort ongoing scan failed");
2396
2397 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
2398 wpas_notify_p2p_find_stopped(wpa_s);
2399 }
2400
2401
2402 struct wpas_p2p_listen_work {
2403 unsigned int freq;
2404 unsigned int duration;
2405 struct wpabuf *probe_resp_ie;
2406 };
2407
2408
2409 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
2410 {
2411 if (lwork == NULL)
2412 return;
2413 wpabuf_free(lwork->probe_resp_ie);
2414 os_free(lwork);
2415 }
2416
2417
2418 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
2419 {
2420 struct wpas_p2p_listen_work *lwork;
2421
2422 if (!wpa_s->p2p_listen_work)
2423 return;
2424
2425 lwork = wpa_s->p2p_listen_work->ctx;
2426 wpas_p2p_listen_work_free(lwork);
2427 radio_work_done(wpa_s->p2p_listen_work);
2428 wpa_s->p2p_listen_work = NULL;
2429 }
2430
2431
2432 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
2433 {
2434 struct wpa_supplicant *wpa_s = work->wpa_s;
2435 struct wpas_p2p_listen_work *lwork = work->ctx;
2436 unsigned int duration;
2437
2438 if (deinit) {
2439 if (work->started) {
2440 wpa_s->p2p_listen_work = NULL;
2441 wpas_stop_listen(wpa_s);
2442 }
2443 wpas_p2p_listen_work_free(lwork);
2444 return;
2445 }
2446
2447 wpa_s->p2p_listen_work = work;
2448
2449 wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
2450
2451 if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
2452 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
2453 "report received Probe Request frames");
2454 wpas_p2p_listen_work_done(wpa_s);
2455 return;
2456 }
2457
2458 wpa_s->pending_listen_freq = lwork->freq;
2459 wpa_s->pending_listen_duration = lwork->duration;
2460
2461 duration = lwork->duration;
2462 #ifdef CONFIG_TESTING_OPTIONS
2463 if (wpa_s->extra_roc_dur) {
2464 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u",
2465 duration, duration + wpa_s->extra_roc_dur);
2466 duration += wpa_s->extra_roc_dur;
2467 }
2468 #endif /* CONFIG_TESTING_OPTIONS */
2469
2470 if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) {
2471 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
2472 "to remain on channel (%u MHz) for Listen "
2473 "state", lwork->freq);
2474 wpas_p2p_listen_work_done(wpa_s);
2475 wpa_s->pending_listen_freq = 0;
2476 return;
2477 }
2478 wpa_s->off_channel_freq = 0;
2479 wpa_s->roc_waiting_drv_freq = lwork->freq;
2480 }
2481
2482
2483 static int wpas_start_listen(void *ctx, unsigned int freq,
2484 unsigned int duration,
2485 const struct wpabuf *probe_resp_ie)
2486 {
2487 struct wpa_supplicant *wpa_s = ctx;
2488 struct wpas_p2p_listen_work *lwork;
2489
2490 if (wpa_s->p2p_listen_work) {
2491 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
2492 return -1;
2493 }
2494
2495 lwork = os_zalloc(sizeof(*lwork));
2496 if (lwork == NULL)
2497 return -1;
2498 lwork->freq = freq;
2499 lwork->duration = duration;
2500 if (probe_resp_ie) {
2501 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
2502 if (lwork->probe_resp_ie == NULL) {
2503 wpas_p2p_listen_work_free(lwork);
2504 return -1;
2505 }
2506 }
2507
2508 if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
2509 lwork) < 0) {
2510 wpas_p2p_listen_work_free(lwork);
2511 return -1;
2512 }
2513
2514 return 0;
2515 }
2516
2517
2518 static void wpas_stop_listen(void *ctx)
2519 {
2520 struct wpa_supplicant *wpa_s = ctx;
2521 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2522 wpa_drv_cancel_remain_on_channel(wpa_s);
2523 wpa_s->off_channel_freq = 0;
2524 wpa_s->roc_waiting_drv_freq = 0;
2525 }
2526 wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
2527
2528 /*
2529 * Don't cancel Probe Request RX reporting for a connected P2P Client
2530 * handling Probe Request frames.
2531 */
2532 if (!wpa_s->p2p_cli_probe)
2533 wpa_drv_probe_req_report(wpa_s, 0);
2534
2535 wpas_p2p_listen_work_done(wpa_s);
2536 }
2537
2538
2539 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf,
2540 unsigned int freq)
2541 {
2542 struct wpa_supplicant *wpa_s = ctx;
2543 return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1,
2544 freq);
2545 }
2546
2547
2548 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2549 const u8 *peer, const char *params,
2550 unsigned int generated_pin)
2551 {
2552 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2553 " %08d%s", MAC2STR(peer), generated_pin, params);
2554 }
2555
2556
2557 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2558 const u8 *peer, const char *params)
2559 {
2560 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2561 "%s", MAC2STR(peer), params);
2562 }
2563
2564
2565 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2566 const u8 *dev_addr, const u8 *pri_dev_type,
2567 const char *dev_name, u16 supp_config_methods,
2568 u8 dev_capab, u8 group_capab, const u8 *group_id,
2569 size_t group_id_len)
2570 {
2571 struct wpa_supplicant *wpa_s = ctx;
2572 char devtype[WPS_DEV_TYPE_BUFSIZE];
2573 char params[300];
2574 u8 empty_dev_type[8];
2575 unsigned int generated_pin = 0;
2576 struct wpa_supplicant *group = NULL;
2577 int res;
2578
2579 if (group_id) {
2580 for (group = wpa_s->global->ifaces; group; group = group->next)
2581 {
2582 struct wpa_ssid *s = group->current_ssid;
2583 if (s != NULL &&
2584 s->mode == WPAS_MODE_P2P_GO &&
2585 group_id_len - ETH_ALEN == s->ssid_len &&
2586 os_memcmp(group_id + ETH_ALEN, s->ssid,
2587 s->ssid_len) == 0)
2588 break;
2589 }
2590 }
2591
2592 if (pri_dev_type == NULL) {
2593 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2594 pri_dev_type = empty_dev_type;
2595 }
2596 res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2597 " pri_dev_type=%s name='%s' config_methods=0x%x "
2598 "dev_capab=0x%x group_capab=0x%x%s%s",
2599 MAC2STR(dev_addr),
2600 wps_dev_type_bin2str(pri_dev_type, devtype,
2601 sizeof(devtype)),
2602 dev_name, supp_config_methods, dev_capab, group_capab,
2603 group ? " group=" : "",
2604 group ? group->ifname : "");
2605 if (os_snprintf_error(sizeof(params), res))
2606 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated");
2607 params[sizeof(params) - 1] = '\0';
2608
2609 if (config_methods & WPS_CONFIG_DISPLAY) {
2610 if (wps_generate_pin(&generated_pin) < 0) {
2611 wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN");
2612 wpas_notify_p2p_provision_discovery(
2613 wpa_s, peer, 0 /* response */,
2614 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0);
2615 return;
2616 }
2617 wpas_prov_disc_local_display(wpa_s, peer, params,
2618 generated_pin);
2619 } else if (config_methods & WPS_CONFIG_KEYPAD)
2620 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2621 else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2622 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2623 MACSTR "%s", MAC2STR(peer), params);
2624
2625 wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2626 P2P_PROV_DISC_SUCCESS,
2627 config_methods, generated_pin);
2628 }
2629
2630
2631 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2632 {
2633 struct wpa_supplicant *wpa_s = ctx;
2634 unsigned int generated_pin = 0;
2635 char params[20];
2636
2637 if (wpa_s->pending_pd_before_join &&
2638 (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2639 os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2640 wpa_s->pending_pd_before_join = 0;
2641 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2642 "join-existing-group operation");
2643 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2644 return;
2645 }
2646
2647 if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2648 wpa_s->pending_pd_use == AUTO_PD_GO_NEG) {
2649 int res;
2650
2651 res = os_snprintf(params, sizeof(params), " peer_go=%d",
2652 wpa_s->pending_pd_use == AUTO_PD_JOIN);
2653 if (os_snprintf_error(sizeof(params), res))
2654 params[sizeof(params) - 1] = '\0';
2655 } else
2656 params[0] = '\0';
2657
2658 if (config_methods & WPS_CONFIG_DISPLAY)
2659 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2660 else if (config_methods & WPS_CONFIG_KEYPAD) {
2661 if (wps_generate_pin(&generated_pin) < 0) {
2662 wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN");
2663 wpas_notify_p2p_provision_discovery(
2664 wpa_s, peer, 0 /* response */,
2665 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0);
2666 return;
2667 }
2668 wpas_prov_disc_local_display(wpa_s, peer, params,
2669 generated_pin);
2670 } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2671 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2672 MACSTR "%s", MAC2STR(peer), params);
2673
2674 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2675 P2P_PROV_DISC_SUCCESS,
2676 config_methods, generated_pin);
2677 }
2678
2679
2680 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2681 enum p2p_prov_disc_status status,
2682 u32 adv_id, const u8 *adv_mac,
2683 const char *deferred_session_resp)
2684 {
2685 struct wpa_supplicant *wpa_s = ctx;
2686
2687 if (wpa_s->p2p_fallback_to_go_neg) {
2688 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2689 "failed - fall back to GO Negotiation");
2690 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
2691 P2P_EVENT_FALLBACK_TO_GO_NEG
2692 "reason=PD-failed");
2693 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2694 return;
2695 }
2696
2697 if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2698 wpa_s->pending_pd_before_join = 0;
2699 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2700 "join-existing-group operation (no ACK for PD "
2701 "Req attempts)");
2702 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2703 return;
2704 }
2705
2706 if (adv_id && adv_mac && deferred_session_resp) {
2707 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2708 " p2p_dev_addr=" MACSTR " status=%d adv_id=%x"
2709 " deferred_session_resp='%s'",
2710 MAC2STR(peer), status, adv_id,
2711 deferred_session_resp);
2712 } else if (adv_id && adv_mac) {
2713 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2714 " p2p_dev_addr=" MACSTR " status=%d adv_id=%x",
2715 MAC2STR(peer), status, adv_id);
2716 } else {
2717 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2718 " p2p_dev_addr=" MACSTR " status=%d",
2719 MAC2STR(peer), status);
2720 }
2721
2722 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2723 status, 0, 0);
2724 }
2725
2726
2727 static int freq_included(struct wpa_supplicant *wpa_s,
2728 const struct p2p_channels *channels,
2729 unsigned int freq)
2730 {
2731 if ((channels == NULL || p2p_channels_includes_freq(channels, freq)) &&
2732 wpas_p2p_go_is_peer_freq(wpa_s, freq))
2733 return 1;
2734 return 0;
2735 }
2736
2737
2738 static void wpas_p2p_go_update_common_freqs(struct wpa_supplicant *wpa_s)
2739 {
2740 unsigned int num = P2P_MAX_CHANNELS;
2741 int *common_freqs;
2742 int ret;
2743
2744 p2p_go_dump_common_freqs(wpa_s);
2745 common_freqs = os_calloc(num, sizeof(int));
2746 if (!common_freqs)
2747 return;
2748
2749 ret = p2p_group_get_common_freqs(wpa_s->p2p_group, common_freqs, &num);
2750 if (ret < 0) {
2751 wpa_dbg(wpa_s, MSG_DEBUG,
2752 "P2P: Failed to get group common freqs");
2753 os_free(common_freqs);
2754 return;
2755 }
2756
2757 os_free(wpa_s->p2p_group_common_freqs);
2758 wpa_s->p2p_group_common_freqs = common_freqs;
2759 wpa_s->p2p_group_common_freqs_num = num;
2760 p2p_go_dump_common_freqs(wpa_s);
2761 }
2762
2763
2764 /*
2765 * Check if the given frequency is one of the possible operating frequencies
2766 * set after the completion of the GO Negotiation.
2767 */
2768 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq)
2769 {
2770 unsigned int i;
2771
2772 p2p_go_dump_common_freqs(wpa_s);
2773
2774 /* assume no restrictions */
2775 if (!wpa_s->p2p_group_common_freqs_num)
2776 return 1;
2777
2778 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
2779 if (wpa_s->p2p_group_common_freqs[i] == freq)
2780 return 1;
2781 }
2782 return 0;
2783 }
2784
2785
2786 static int wpas_sta_check_ecsa(struct hostapd_data *hapd,
2787 struct sta_info *sta, void *ctx)
2788 {
2789 int *ecsa_support = ctx;
2790
2791 *ecsa_support &= sta->ecsa_supported;
2792
2793 return 0;
2794 }
2795
2796
2797 /* Check if all the peers support eCSA */
2798 static int wpas_p2p_go_clients_support_ecsa(struct wpa_supplicant *wpa_s)
2799 {
2800 int ecsa_support = 1;
2801
2802 ap_for_each_sta(wpa_s->ap_iface->bss[0], wpas_sta_check_ecsa,
2803 &ecsa_support);
2804
2805 return ecsa_support;
2806 }
2807
2808
2809 /**
2810 * Pick the best frequency to use from all the currently used frequencies.
2811 */
2812 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
2813 struct wpa_used_freq_data *freqs,
2814 unsigned int num)
2815 {
2816 unsigned int i, c;
2817
2818 /* find a candidate freq that is supported by P2P */
2819 for (c = 0; c < num; c++)
2820 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
2821 break;
2822
2823 if (c == num)
2824 return 0;
2825
2826 /* once we have a candidate, try to find a 'better' one */
2827 for (i = c + 1; i < num; i++) {
2828 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
2829 continue;
2830
2831 /*
2832 * 1. Infrastructure station interfaces have higher preference.
2833 * 2. P2P Clients have higher preference.
2834 * 3. All others.
2835 */
2836 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
2837 c = i;
2838 break;
2839 }
2840
2841 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
2842 c = i;
2843 }
2844 return freqs[c].freq;
2845 }
2846
2847
2848 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2849 const u8 *go_dev_addr, const u8 *ssid,
2850 size_t ssid_len, int *go, u8 *group_bssid,
2851 int *force_freq, int persistent_group,
2852 const struct p2p_channels *channels,
2853 int dev_pw_id)
2854 {
2855 struct wpa_supplicant *wpa_s = ctx;
2856 struct wpa_ssid *s;
2857 struct wpa_used_freq_data *freqs;
2858 struct wpa_supplicant *grp;
2859 int best_freq;
2860
2861 if (!persistent_group) {
2862 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2863 " to join an active group (SSID: %s)",
2864 MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2865 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2866 (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2867 == 0 ||
2868 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2869 wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2870 "authorized invitation");
2871 goto accept_inv;
2872 }
2873
2874 #ifdef CONFIG_WPS_NFC
2875 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled &&
2876 dev_pw_id == wpa_s->p2p_oob_dev_pw_id) {
2877 wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2878 wpa_s->p2p_wps_method = WPS_NFC;
2879 wpa_s->pending_join_wps_method = WPS_NFC;
2880 os_memcpy(wpa_s->pending_join_dev_addr,
2881 go_dev_addr, ETH_ALEN);
2882 os_memcpy(wpa_s->pending_join_iface_addr,
2883 bssid, ETH_ALEN);
2884 goto accept_inv;
2885 }
2886 #endif /* CONFIG_WPS_NFC */
2887
2888 /*
2889 * Do not accept the invitation automatically; notify user and
2890 * request approval.
2891 */
2892 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2893 }
2894
2895 grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2896 if (grp) {
2897 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2898 "running persistent group");
2899 if (*go)
2900 os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2901 goto accept_inv;
2902 }
2903
2904 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2905 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2906 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2907 "invitation to re-invoke a persistent group");
2908 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
2909 } else if (!wpa_s->conf->persistent_reconnect)
2910 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2911
2912 for (s = wpa_s->conf->ssid; s; s = s->next) {
2913 if (s->disabled == 2 &&
2914 os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2915 s->ssid_len == ssid_len &&
2916 os_memcmp(ssid, s->ssid, ssid_len) == 0)
2917 break;
2918 }
2919
2920 if (!s) {
2921 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2922 " requested reinvocation of an unknown group",
2923 MAC2STR(sa));
2924 return P2P_SC_FAIL_UNKNOWN_GROUP;
2925 }
2926
2927 if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2928 *go = 1;
2929 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2930 wpa_printf(MSG_DEBUG, "P2P: The only available "
2931 "interface is already in use - reject "
2932 "invitation");
2933 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2934 }
2935 if (wpa_s->p2p_mgmt)
2936 os_memcpy(group_bssid, wpa_s->parent->own_addr,
2937 ETH_ALEN);
2938 else
2939 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2940 } else if (s->mode == WPAS_MODE_P2P_GO) {
2941 *go = 1;
2942 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2943 {
2944 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2945 "interface address for the group");
2946 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2947 }
2948 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2949 ETH_ALEN);
2950 }
2951
2952 accept_inv:
2953 wpas_p2p_set_own_freq_preference(wpa_s, 0);
2954
2955 best_freq = 0;
2956 freqs = os_calloc(wpa_s->num_multichan_concurrent,
2957 sizeof(struct wpa_used_freq_data));
2958 if (freqs) {
2959 int num_channels = wpa_s->num_multichan_concurrent;
2960 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
2961 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
2962 os_free(freqs);
2963 }
2964
2965 /* Get one of the frequencies currently in use */
2966 if (best_freq > 0) {
2967 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
2968 wpas_p2p_set_own_freq_preference(wpa_s, best_freq);
2969
2970 if (wpa_s->num_multichan_concurrent < 2 ||
2971 wpas_p2p_num_unused_channels(wpa_s) < 1) {
2972 wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
2973 *force_freq = best_freq;
2974 }
2975 }
2976
2977 if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
2978 wpas_p2p_num_unused_channels(wpa_s) > 0) {
2979 if (*go == 0) {
2980 /* We are the client */
2981 wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
2982 "running a GO but we are capable of MCC, "
2983 "figure out the best channel to use");
2984 *force_freq = 0;
2985 } else if (!freq_included(wpa_s, channels, *force_freq)) {
2986 /* We are the GO, and *force_freq is not in the
2987 * intersection */
2988 wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
2989 "in intersection but we are capable of MCC, "
2990 "figure out the best channel to use",
2991 *force_freq);
2992 *force_freq = 0;
2993 }
2994 }
2995
2996 return P2P_SC_SUCCESS;
2997 }
2998
2999
3000 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
3001 const u8 *ssid, size_t ssid_len,
3002 const u8 *go_dev_addr, u8 status,
3003 int op_freq)
3004 {
3005 struct wpa_supplicant *wpa_s = ctx;
3006 struct wpa_ssid *s;
3007
3008 for (s = wpa_s->conf->ssid; s; s = s->next) {
3009 if (s->disabled == 2 &&
3010 s->ssid_len == ssid_len &&
3011 os_memcmp(ssid, s->ssid, ssid_len) == 0)
3012 break;
3013 }
3014
3015 if (status == P2P_SC_SUCCESS) {
3016 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3017 " was accepted; op_freq=%d MHz, SSID=%s",
3018 MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
3019 if (s) {
3020 int go = s->mode == WPAS_MODE_P2P_GO;
3021 wpas_p2p_group_add_persistent(
3022 wpa_s, s, go, 0, op_freq, 0, 0, 0, 0, NULL,
3023 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0,
3024 1);
3025 } else if (bssid) {
3026 wpa_s->user_initiated_pd = 0;
3027 wpas_p2p_join(wpa_s, bssid, go_dev_addr,
3028 wpa_s->p2p_wps_method, 0, op_freq,
3029 ssid, ssid_len);
3030 }
3031 return;
3032 }
3033
3034 if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3035 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3036 " was rejected (status %u)", MAC2STR(sa), status);
3037 return;
3038 }
3039
3040 if (!s) {
3041 if (bssid) {
3042 wpa_msg_global(wpa_s, MSG_INFO,
3043 P2P_EVENT_INVITATION_RECEIVED
3044 "sa=" MACSTR " go_dev_addr=" MACSTR
3045 " bssid=" MACSTR " unknown-network",
3046 MAC2STR(sa), MAC2STR(go_dev_addr),
3047 MAC2STR(bssid));
3048 } else {
3049 wpa_msg_global(wpa_s, MSG_INFO,
3050 P2P_EVENT_INVITATION_RECEIVED
3051 "sa=" MACSTR " go_dev_addr=" MACSTR
3052 " unknown-network",
3053 MAC2STR(sa), MAC2STR(go_dev_addr));
3054 }
3055 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr,
3056 bssid, 0, op_freq);
3057 return;
3058 }
3059
3060 if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
3061 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3062 "sa=" MACSTR " persistent=%d freq=%d",
3063 MAC2STR(sa), s->id, op_freq);
3064 } else {
3065 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3066 "sa=" MACSTR " persistent=%d",
3067 MAC2STR(sa), s->id);
3068 }
3069 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, bssid,
3070 s->id, op_freq);
3071 }
3072
3073
3074 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
3075 struct wpa_ssid *ssid,
3076 const u8 *peer, int inv)
3077 {
3078 size_t i;
3079 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
3080
3081 if (ssid == NULL)
3082 return;
3083
3084 for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
3085 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer,
3086 ETH_ALEN) == 0)
3087 break;
3088 }
3089 if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
3090 if (ssid->mode != WPAS_MODE_P2P_GO &&
3091 os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
3092 wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
3093 "due to invitation result", ssid->id);
3094 wpas_notify_network_removed(wpa_s, ssid);
3095 wpa_config_remove_network(wpa_s->conf, ssid->id);
3096 return;
3097 }
3098 return; /* Peer not found in client list */
3099 }
3100
3101 wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
3102 "group %d client list%s",
3103 MAC2STR(peer), ssid->id,
3104 inv ? " due to invitation result" : "");
3105 os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN,
3106 ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3107 (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3108 ssid->num_p2p_clients--;
3109 if (p2p_wpa_s->conf->update_config &&
3110 wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
3111 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
3112 }
3113
3114
3115 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
3116 const u8 *peer)
3117 {
3118 struct wpa_ssid *ssid;
3119
3120 wpa_s = wpa_s->global->p2p_invite_group;
3121 if (wpa_s == NULL)
3122 return; /* No known invitation group */
3123 ssid = wpa_s->current_ssid;
3124 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
3125 !ssid->p2p_persistent_group)
3126 return; /* Not operating as a GO in persistent group */
3127 ssid = wpas_p2p_get_persistent(wpa_s->p2pdev, peer,
3128 ssid->ssid, ssid->ssid_len);
3129 wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3130 }
3131
3132
3133 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
3134 const struct p2p_channels *channels,
3135 const u8 *peer, int neg_freq,
3136 int peer_oper_freq)
3137 {
3138 struct wpa_supplicant *wpa_s = ctx;
3139 struct wpa_ssid *ssid;
3140 int freq;
3141
3142 if (bssid) {
3143 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3144 "status=%d " MACSTR,
3145 status, MAC2STR(bssid));
3146 } else {
3147 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3148 "status=%d ", status);
3149 }
3150 wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
3151
3152 wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
3153 status, MAC2STR(peer));
3154 if (wpa_s->pending_invite_ssid_id == -1) {
3155 struct wpa_supplicant *group_if =
3156 wpa_s->global->p2p_invite_group;
3157
3158 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
3159 wpas_remove_persistent_client(wpa_s, peer);
3160
3161 /*
3162 * Invitation to an active group. If this is successful and we
3163 * are the GO, set the client wait to postpone some concurrent
3164 * operations and to allow provisioning and connection to happen
3165 * more quickly.
3166 */
3167 if (status == P2P_SC_SUCCESS &&
3168 group_if && group_if->current_ssid &&
3169 group_if->current_ssid->mode == WPAS_MODE_P2P_GO) {
3170 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
3171 #ifdef CONFIG_TESTING_OPTIONS
3172 if (group_if->p2p_go_csa_on_inv) {
3173 wpa_printf(MSG_DEBUG,
3174 "Testing: force P2P GO CSA after invitation");
3175 eloop_cancel_timeout(
3176 wpas_p2p_reconsider_moving_go,
3177 wpa_s, NULL);
3178 eloop_register_timeout(
3179 0, 50000,
3180 wpas_p2p_reconsider_moving_go,
3181 wpa_s, NULL);
3182 }
3183 #endif /* CONFIG_TESTING_OPTIONS */
3184 }
3185 return;
3186 }
3187
3188 if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3189 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
3190 "invitation exchange to indicate readiness for "
3191 "re-invocation");
3192 }
3193
3194 if (status != P2P_SC_SUCCESS) {
3195 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
3196 ssid = wpa_config_get_network(
3197 wpa_s->conf, wpa_s->pending_invite_ssid_id);
3198 wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3199 }
3200 wpas_p2p_remove_pending_group_interface(wpa_s);
3201 return;
3202 }
3203
3204 ssid = wpa_config_get_network(wpa_s->conf,
3205 wpa_s->pending_invite_ssid_id);
3206 if (ssid == NULL) {
3207 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
3208 "data matching with invitation");
3209 return;
3210 }
3211
3212 /*
3213 * The peer could have missed our ctrl::ack frame for Invitation
3214 * Response and continue retransmitting the frame. To reduce the
3215 * likelihood of the peer not getting successful TX status for the
3216 * Invitation Response frame, wait a short time here before starting
3217 * the persistent group so that we will remain on the current channel to
3218 * acknowledge any possible retransmission from the peer.
3219 */
3220 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
3221 "starting persistent group");
3222 os_sleep(0, 50000);
3223
3224 if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
3225 freq_included(wpa_s, channels, neg_freq))
3226 freq = neg_freq;
3227 else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
3228 freq_included(wpa_s, channels, peer_oper_freq))
3229 freq = peer_oper_freq;
3230 else
3231 freq = 0;
3232
3233 wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
3234 freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3235 wpas_p2p_group_add_persistent(wpa_s, ssid,
3236 ssid->mode == WPAS_MODE_P2P_GO,
3237 wpa_s->p2p_persistent_go_freq,
3238 freq,
3239 wpa_s->p2p_go_vht_center_freq2,
3240 wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
3241 wpa_s->p2p_go_max_oper_chwidth,
3242 channels,
3243 ssid->mode == WPAS_MODE_P2P_GO ?
3244 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3245 0, 1);
3246 }
3247
3248
3249 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
3250 unsigned int freq)
3251 {
3252 if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
3253 return 1;
3254 return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3255 }
3256
3257
3258 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3259 {
3260 reg->channel[reg->channels] = chan;
3261 reg->channels++;
3262 }
3263
3264
3265 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3266 struct p2p_channels *chan,
3267 struct p2p_channels *cli_chan)
3268 {
3269 int i, cla = 0;
3270
3271 wpa_s->global->p2p_24ghz_social_channels = 1;
3272
3273 os_memset(cli_chan, 0, sizeof(*cli_chan));
3274
3275 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3276 "band");
3277
3278 /* Operating class 81 - 2.4 GHz band channels 1..13 */
3279 chan->reg_class[cla].reg_class = 81;
3280 chan->reg_class[cla].channels = 0;
3281 for (i = 0; i < 11; i++) {
3282 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3283 wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3284 }
3285 if (chan->reg_class[cla].channels)
3286 cla++;
3287
3288 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3289 "band");
3290
3291 /* Operating class 115 - 5 GHz, channels 36-48 */
3292 chan->reg_class[cla].reg_class = 115;
3293 chan->reg_class[cla].channels = 0;
3294 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3295 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3296 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3297 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3298 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3299 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3300 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3301 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3302 if (chan->reg_class[cla].channels)
3303 cla++;
3304
3305 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3306 "band");
3307
3308 /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3309 chan->reg_class[cla].reg_class = 124;
3310 chan->reg_class[cla].channels = 0;
3311 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3312 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3313 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3314 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3315 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3316 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3317 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3318 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3319 if (chan->reg_class[cla].channels)
3320 cla++;
3321
3322 chan->reg_classes = cla;
3323 return 0;
3324 }
3325
3326
3327 enum chan_allowed {
3328 NOT_ALLOWED, NO_IR, ALLOWED
3329 };
3330
3331 static int has_channel(struct wpa_global *global,
3332 struct hostapd_hw_modes *mode, u8 chan, int *flags)
3333 {
3334 int i;
3335 unsigned int freq;
3336
3337 freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3338 chan * 5;
3339 if (wpas_p2p_disallowed_freq(global, freq))
3340 return NOT_ALLOWED;
3341
3342 for (i = 0; i < mode->num_channels; i++) {
3343 if (mode->channels[i].chan == chan) {
3344 if (flags)
3345 *flags = mode->channels[i].flag;
3346 if (mode->channels[i].flag &
3347 (HOSTAPD_CHAN_DISABLED |
3348 HOSTAPD_CHAN_RADAR))
3349 return NOT_ALLOWED;
3350 if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR)
3351 return NO_IR;
3352 return ALLOWED;
3353 }
3354 }
3355
3356 return NOT_ALLOWED;
3357 }
3358
3359
3360 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3361 struct hostapd_hw_modes *mode,
3362 u8 channel)
3363 {
3364 u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3365 unsigned int i;
3366
3367 if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3368 return 0;
3369
3370 for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3371 /*
3372 * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3373 * so the center channel is 6 channels away from the start/end.
3374 */
3375 if (channel >= center_channels[i] - 6 &&
3376 channel <= center_channels[i] + 6)
3377 return center_channels[i];
3378
3379 return 0;
3380 }
3381
3382
3383 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3384 struct hostapd_hw_modes *mode,
3385 u8 channel, u8 bw)
3386 {
3387 u8 center_chan;
3388 int i, flags;
3389 enum chan_allowed res, ret = ALLOWED;
3390
3391 center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3392 if (!center_chan)
3393 return NOT_ALLOWED;
3394 if (center_chan >= 58 && center_chan <= 138)
3395 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3396
3397 /* check all the channels are available */
3398 for (i = 0; i < 4; i++) {
3399 int adj_chan = center_chan - 6 + i * 4;
3400
3401 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3402 if (res == NOT_ALLOWED)
3403 return NOT_ALLOWED;
3404 if (res == NO_IR)
3405 ret = NO_IR;
3406
3407 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3408 return NOT_ALLOWED;
3409 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3410 return NOT_ALLOWED;
3411 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3412 return NOT_ALLOWED;
3413 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3414 return NOT_ALLOWED;
3415 }
3416
3417 return ret;
3418 }
3419
3420
3421 static int wpas_p2p_get_center_160mhz(struct wpa_supplicant *wpa_s,
3422 struct hostapd_hw_modes *mode,
3423 u8 channel)
3424 {
3425 u8 center_channels[] = { 50, 114 };
3426 unsigned int i;
3427
3428 if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3429 return 0;
3430
3431 for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3432 /*
3433 * In 160 MHz, the bandwidth "spans" 28 channels (e.g., 36-64),
3434 * so the center channel is 14 channels away from the start/end.
3435 */
3436 if (channel >= center_channels[i] - 14 &&
3437 channel <= center_channels[i] + 14)
3438 return center_channels[i];
3439
3440 return 0;
3441 }
3442
3443
3444 static enum chan_allowed wpas_p2p_verify_160mhz(struct wpa_supplicant *wpa_s,
3445 struct hostapd_hw_modes *mode,
3446 u8 channel, u8 bw)
3447 {
3448 u8 center_chan;
3449 int i, flags;
3450 enum chan_allowed res, ret = ALLOWED;
3451
3452 center_chan = wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3453 if (!center_chan)
3454 return NOT_ALLOWED;
3455 /* VHT 160 MHz uses DFS channels in most countries. */
3456
3457 /* Check all the channels are available */
3458 for (i = 0; i < 8; i++) {
3459 int adj_chan = center_chan - 14 + i * 4;
3460
3461 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3462 if (res == NOT_ALLOWED)
3463 return NOT_ALLOWED;
3464
3465 if (res == NO_IR)
3466 ret = NO_IR;
3467
3468 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_150))
3469 return NOT_ALLOWED;
3470 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_130))
3471 return NOT_ALLOWED;
3472 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_110))
3473 return NOT_ALLOWED;
3474 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_90))
3475 return NOT_ALLOWED;
3476 if (i == 4 && !(flags & HOSTAPD_CHAN_VHT_90_70))
3477 return NOT_ALLOWED;
3478 if (i == 5 && !(flags & HOSTAPD_CHAN_VHT_110_50))
3479 return NOT_ALLOWED;
3480 if (i == 6 && !(flags & HOSTAPD_CHAN_VHT_130_30))
3481 return NOT_ALLOWED;
3482 if (i == 7 && !(flags & HOSTAPD_CHAN_VHT_150_10))
3483 return NOT_ALLOWED;
3484 }
3485
3486 return ret;
3487 }
3488
3489
3490 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3491 struct hostapd_hw_modes *mode,
3492 u8 channel, u8 bw)
3493 {
3494 int flag = 0;
3495 enum chan_allowed res, res2;
3496
3497 res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3498 if (bw == BW40MINUS) {
3499 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3500 return NOT_ALLOWED;
3501 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3502 } else if (bw == BW40PLUS) {
3503 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3504 return NOT_ALLOWED;
3505 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3506 } else if (bw == BW80) {
3507 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3508 } else if (bw == BW160) {
3509 res2 = wpas_p2p_verify_160mhz(wpa_s, mode, channel, bw);
3510 }
3511
3512 if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3513 return NOT_ALLOWED;
3514 if (res == NO_IR || res2 == NO_IR)
3515 return NO_IR;
3516 return res;
3517 }
3518
3519
3520 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3521 struct p2p_channels *chan,
3522 struct p2p_channels *cli_chan)
3523 {
3524 struct hostapd_hw_modes *mode;
3525 int cla, op, cli_cla;
3526
3527 if (wpa_s->hw.modes == NULL) {
3528 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3529 "of all supported channels; assume dualband "
3530 "support");
3531 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3532 }
3533
3534 cla = cli_cla = 0;
3535
3536 for (op = 0; global_op_class[op].op_class; op++) {
3537 const struct oper_class_map *o = &global_op_class[op];
3538 u8 ch;
3539 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3540
3541 if (o->p2p == NO_P2P_SUPP)
3542 continue;
3543
3544 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3545 if (mode == NULL)
3546 continue;
3547 if (mode->mode == HOSTAPD_MODE_IEEE80211G)
3548 wpa_s->global->p2p_24ghz_social_channels = 1;
3549 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3550 enum chan_allowed res;
3551 res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3552 if (res == ALLOWED) {
3553 if (reg == NULL) {
3554 wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3555 o->op_class);
3556 reg = &chan->reg_class[cla];
3557 cla++;
3558 reg->reg_class = o->op_class;
3559 }
3560 reg->channel[reg->channels] = ch;
3561 reg->channels++;
3562 } else if (res == NO_IR &&
3563 wpa_s->conf->p2p_add_cli_chan) {
3564 if (cli_reg == NULL) {
3565 wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3566 o->op_class);
3567 cli_reg = &cli_chan->reg_class[cli_cla];
3568 cli_cla++;
3569 cli_reg->reg_class = o->op_class;
3570 }
3571 cli_reg->channel[cli_reg->channels] = ch;
3572 cli_reg->channels++;
3573 }
3574 }
3575 if (reg) {
3576 wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3577 reg->channel, reg->channels);
3578 }
3579 if (cli_reg) {
3580 wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3581 cli_reg->channel, cli_reg->channels);
3582 }
3583 }
3584
3585 chan->reg_classes = cla;
3586 cli_chan->reg_classes = cli_cla;
3587
3588 return 0;
3589 }
3590
3591
3592 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3593 struct hostapd_hw_modes *mode, u8 channel)
3594 {
3595 int op;
3596 enum chan_allowed ret;
3597
3598 for (op = 0; global_op_class[op].op_class; op++) {
3599 const struct oper_class_map *o = &global_op_class[op];
3600 u8 ch;
3601
3602 if (o->p2p == NO_P2P_SUPP)
3603 continue;
3604
3605 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3606 if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3607 (o->bw != BW40PLUS && o->bw != BW40MINUS) ||
3608 ch != channel)
3609 continue;
3610 ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3611 if (ret == ALLOWED)
3612 return (o->bw == BW40MINUS) ? -1 : 1;
3613 }
3614 }
3615 return 0;
3616 }
3617
3618
3619 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3620 struct hostapd_hw_modes *mode, u8 channel)
3621 {
3622 if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3623 return 0;
3624
3625 return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3626 }
3627
3628
3629 int wpas_p2p_get_vht160_center(struct wpa_supplicant *wpa_s,
3630 struct hostapd_hw_modes *mode, u8 channel)
3631 {
3632 if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW160))
3633 return 0;
3634 return wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3635 }
3636
3637
3638 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3639 size_t buf_len)
3640 {
3641 struct wpa_supplicant *wpa_s = ctx;
3642
3643 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3644 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3645 break;
3646 }
3647 if (wpa_s == NULL)
3648 return -1;
3649
3650 return wpa_drv_get_noa(wpa_s, buf, buf_len);
3651 }
3652
3653
3654 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3655 const u8 *ssid, size_t ssid_len)
3656 {
3657 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3658 struct wpa_ssid *s = wpa_s->current_ssid;
3659 if (s == NULL)
3660 continue;
3661 if (s->mode != WPAS_MODE_P2P_GO &&
3662 s->mode != WPAS_MODE_AP &&
3663 s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3664 continue;
3665 if (s->ssid_len != ssid_len ||
3666 os_memcmp(ssid, s->ssid, ssid_len) != 0)
3667 continue;
3668 return wpa_s;
3669 }
3670
3671 return NULL;
3672
3673 }
3674
3675
3676 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3677 const u8 *peer_dev_addr)
3678 {
3679 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3680 struct wpa_ssid *ssid = wpa_s->current_ssid;
3681 if (ssid && (ssid->mode != WPAS_MODE_INFRA || !ssid->p2p_group))
3682 continue;
3683 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3684 return wpa_s;
3685 }
3686
3687 return NULL;
3688 }
3689
3690
3691 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3692 {
3693 struct wpa_supplicant *wpa_s = ctx;
3694
3695 return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3696 }
3697
3698
3699 static int wpas_is_concurrent_session_active(void *ctx)
3700 {
3701 struct wpa_supplicant *wpa_s = ctx;
3702 struct wpa_supplicant *ifs;
3703
3704 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3705 if (ifs == wpa_s)
3706 continue;
3707 if (ifs->wpa_state > WPA_ASSOCIATED)
3708 return 1;
3709 }
3710 return 0;
3711 }
3712
3713
3714 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3715 {
3716 struct wpa_supplicant *wpa_s = ctx;
3717 wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3718 }
3719
3720
3721 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
3722 const char *conf_p2p_dev)
3723 {
3724 struct wpa_interface iface;
3725 struct wpa_supplicant *p2pdev_wpa_s;
3726 char ifname[100];
3727 char force_name[100];
3728 int ret;
3729
3730 ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3731 wpa_s->ifname);
3732 if (os_snprintf_error(sizeof(ifname), ret))
3733 return -1;
3734 force_name[0] = '\0';
3735 wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3736 ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3737 force_name, wpa_s->pending_interface_addr, NULL);
3738 if (ret < 0) {
3739 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3740 return ret;
3741 }
3742 os_strlcpy(wpa_s->pending_interface_name, ifname,
3743 sizeof(wpa_s->pending_interface_name));
3744
3745 os_memset(&iface, 0, sizeof(iface));
3746 iface.p2p_mgmt = 1;
3747 iface.ifname = wpa_s->pending_interface_name;
3748 iface.driver = wpa_s->driver->name;
3749 iface.driver_param = wpa_s->conf->driver_param;
3750
3751 /*
3752 * If a P2P Device configuration file was given, use it as the interface
3753 * configuration file (instead of using parent's configuration file.
3754 */
3755 if (conf_p2p_dev) {
3756 iface.confname = conf_p2p_dev;
3757 iface.ctrl_interface = NULL;
3758 } else {
3759 iface.confname = wpa_s->confname;
3760 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3761 }
3762
3763 p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
3764 if (!p2pdev_wpa_s) {
3765 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3766 return -1;
3767 }
3768
3769 p2pdev_wpa_s->p2pdev = p2pdev_wpa_s;
3770 wpa_s->pending_interface_name[0] = '\0';
3771 return 0;
3772 }
3773
3774
3775 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3776 const u8 *noa, size_t noa_len)
3777 {
3778 struct wpa_supplicant *wpa_s, *intf = ctx;
3779 char hex[100];
3780
3781 for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3782 if (wpa_s->waiting_presence_resp)
3783 break;
3784 }
3785 if (!wpa_s) {
3786 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3787 return;
3788 }
3789 wpa_s->waiting_presence_resp = 0;
3790
3791 wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3792 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3793 " status=%u noa=%s", MAC2STR(src), status, hex);
3794 }
3795
3796
3797 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid,
3798 size_t ssid_len, u8 *go_dev_addr,
3799 u8 *ret_ssid, size_t *ret_ssid_len,
3800 u8 *intended_iface_addr)
3801 {
3802 struct wpa_supplicant *wpa_s = ctx;
3803 struct wpa_ssid *s;
3804
3805 s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len);
3806 if (s) {
3807 os_memcpy(ret_ssid, s->ssid, s->ssid_len);
3808 *ret_ssid_len = s->ssid_len;
3809 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN);
3810
3811 if (s->mode != WPAS_MODE_P2P_GO) {
3812 os_memset(intended_iface_addr, 0, ETH_ALEN);
3813 } else if (wpas_p2p_create_iface(wpa_s)) {
3814 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO))
3815 return 0;
3816
3817 os_memcpy(intended_iface_addr,
3818 wpa_s->pending_interface_addr, ETH_ALEN);
3819 } else {
3820 os_memcpy(intended_iface_addr, wpa_s->own_addr,
3821 ETH_ALEN);
3822 }
3823 return 1;
3824 }
3825
3826 return 0;
3827 }
3828
3829
3830 static int wpas_get_go_info(void *ctx, u8 *intended_addr,
3831 u8 *ssid, size_t *ssid_len, int *group_iface,
3832 unsigned int *freq)
3833 {
3834 struct wpa_supplicant *wpa_s = ctx;
3835 struct wpa_supplicant *go;
3836 struct wpa_ssid *s;
3837
3838 /*
3839 * group_iface will be set to 1 only if a dedicated interface for P2P
3840 * role is required. First, we try to reuse an active GO. However,
3841 * if it is not present, we will try to reactivate an existing
3842 * persistent group and set group_iface to 1, so the caller will know
3843 * that the pending interface should be used.
3844 */
3845 *group_iface = 0;
3846
3847 if (freq)
3848 *freq = 0;
3849
3850 go = wpas_p2p_get_go_group(wpa_s);
3851 if (!go) {
3852 s = wpas_p2p_get_persistent_go(wpa_s);
3853 *group_iface = wpas_p2p_create_iface(wpa_s);
3854 if (s)
3855 os_memcpy(intended_addr, s->bssid, ETH_ALEN);
3856 else
3857 return 0;
3858 } else {
3859 s = go->current_ssid;
3860 os_memcpy(intended_addr, go->own_addr, ETH_ALEN);
3861 if (freq)
3862 *freq = go->assoc_freq;
3863 }
3864
3865 os_memcpy(ssid, s->ssid, s->ssid_len);
3866 *ssid_len = s->ssid_len;
3867
3868 return 1;
3869 }
3870
3871
3872 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go,
3873 const u8 *ssid, size_t ssid_len)
3874 {
3875 struct wpa_supplicant *wpa_s = ctx;
3876 struct wpa_ssid *s;
3877 int save_config = 0;
3878 size_t i;
3879
3880 /* Start with our first choice of Persistent Groups */
3881 while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) {
3882 if (go && ssid && ssid_len &&
3883 s->ssid_len == ssid_len &&
3884 os_memcmp(go, s->bssid, ETH_ALEN) == 0 &&
3885 os_memcmp(ssid, s->ssid, ssid_len) == 0)
3886 break;
3887
3888 /* Remove stale persistent group */
3889 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) {
3890 wpa_config_remove_network(wpa_s->conf, s->id);
3891 save_config = 1;
3892 continue;
3893 }
3894
3895 for (i = 0; i < s->num_p2p_clients; i++) {
3896 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
3897 peer, ETH_ALEN) != 0)
3898 continue;
3899
3900 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
3901 s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3902 (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3903 break;
3904 }
3905 s->num_p2p_clients--;
3906 save_config = 1;
3907 }
3908
3909 if (save_config)
3910 p2p_config_write(wpa_s);
3911
3912 /* Return TRUE if valid SSID remains */
3913 return s != NULL;
3914 }
3915
3916
3917 static void wpas_p2ps_get_feat_cap_str(char *buf, size_t buf_len,
3918 const u8 *feat_cap, size_t feat_cap_len)
3919 {
3920 static const char pref[] = " feature_cap=";
3921 int ret;
3922
3923 buf[0] = '\0';
3924
3925 /*
3926 * We expect a feature capability to contain at least one byte to be
3927 * reported. The string buffer provided by the caller function is
3928 * expected to be big enough to contain all bytes of the attribute for
3929 * known specifications. This function truncates the reported bytes if
3930 * the feature capability data exceeds the string buffer size.
3931 */
3932 if (!feat_cap || !feat_cap_len || buf_len < sizeof(pref) + 2)
3933 return;
3934
3935 os_memcpy(buf, pref, sizeof(pref));
3936 ret = wpa_snprintf_hex(&buf[sizeof(pref) - 1],
3937 buf_len - sizeof(pref) + 1,
3938 feat_cap, feat_cap_len);
3939
3940 if (ret != (2 * (int) feat_cap_len))
3941 wpa_printf(MSG_WARNING, "P2PS feature_cap bytes truncated");
3942 }
3943
3944
3945 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev,
3946 const u8 *adv_mac, const u8 *ses_mac,
3947 const u8 *grp_mac, u32 adv_id, u32 ses_id,
3948 u8 conncap, int passwd_id,
3949 const u8 *persist_ssid,
3950 size_t persist_ssid_size, int response_done,
3951 int prov_start, const char *session_info,
3952 const u8 *feat_cap, size_t feat_cap_len,
3953 unsigned int freq,
3954 const u8 *group_ssid, size_t group_ssid_len)
3955 {
3956 struct wpa_supplicant *wpa_s = ctx;
3957 u8 mac[ETH_ALEN];
3958 struct wpa_ssid *persistent_go, *stale, *s = NULL;
3959 int save_config = 0;
3960 struct wpa_supplicant *go_wpa_s;
3961 char feat_cap_str[256];
3962
3963 if (!dev)
3964 return;
3965
3966 os_memset(mac, 0, ETH_ALEN);
3967 if (!adv_mac)
3968 adv_mac = mac;
3969 if (!ses_mac)
3970 ses_mac = mac;
3971 if (!grp_mac)
3972 grp_mac = mac;
3973
3974 wpas_p2ps_get_feat_cap_str(feat_cap_str, sizeof(feat_cap_str),
3975 feat_cap, feat_cap_len);
3976
3977 if (prov_start) {
3978 if (session_info == NULL) {
3979 wpa_msg_global(wpa_s, MSG_INFO,
3980 P2P_EVENT_P2PS_PROVISION_START MACSTR
3981 " adv_id=%x conncap=%x"
3982 " adv_mac=" MACSTR
3983 " session=%x mac=" MACSTR
3984 " dev_passwd_id=%d%s",
3985 MAC2STR(dev), adv_id, conncap,
3986 MAC2STR(adv_mac),
3987 ses_id, MAC2STR(ses_mac),
3988 passwd_id, feat_cap_str);
3989 } else {
3990 wpa_msg_global(wpa_s, MSG_INFO,
3991 P2P_EVENT_P2PS_PROVISION_START MACSTR
3992 " adv_id=%x conncap=%x"
3993 " adv_mac=" MACSTR
3994 " session=%x mac=" MACSTR
3995 " dev_passwd_id=%d info='%s'%s",
3996 MAC2STR(dev), adv_id, conncap,
3997 MAC2STR(adv_mac),
3998 ses_id, MAC2STR(ses_mac),
3999 passwd_id, session_info, feat_cap_str);
4000 }
4001 return;
4002 }
4003
4004 go_wpa_s = wpas_p2p_get_go_group(wpa_s);
4005 persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4006
4007 if (status && status != P2P_SC_SUCCESS_DEFERRED) {
4008 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4009 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4010
4011 if (persistent_go && !persistent_go->num_p2p_clients) {
4012 /* remove empty persistent GO */
4013 wpa_config_remove_network(wpa_s->conf,
4014 persistent_go->id);
4015 }
4016
4017 wpa_msg_global(wpa_s, MSG_INFO,
4018 P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4019 " status=%d"
4020 " adv_id=%x adv_mac=" MACSTR
4021 " session=%x mac=" MACSTR "%s",
4022 MAC2STR(dev), status,
4023 adv_id, MAC2STR(adv_mac),
4024 ses_id, MAC2STR(ses_mac), feat_cap_str);
4025 return;
4026 }
4027
4028 /* Clean up stale persistent groups with this device */
4029 if (persist_ssid && persist_ssid_size)
4030 s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid,
4031 persist_ssid_size);
4032
4033 if (persist_ssid && s && s->mode != WPAS_MODE_P2P_GO &&
4034 is_zero_ether_addr(grp_mac)) {
4035 wpa_dbg(wpa_s, MSG_ERROR,
4036 "P2P: Peer device is a GO in a persistent group, but it did not provide the intended MAC address");
4037 return;
4038 }
4039
4040 for (;;) {
4041 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0);
4042 if (!stale)
4043 break;
4044
4045 if (s && s->ssid_len == stale->ssid_len &&
4046 os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 &&
4047 os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0)
4048 break;
4049
4050 /* Remove stale persistent group */
4051 if (stale->mode != WPAS_MODE_P2P_GO ||
4052 stale->num_p2p_clients <= 1) {
4053 wpa_config_remove_network(wpa_s->conf, stale->id);
4054 } else {
4055 size_t i;
4056
4057 for (i = 0; i < stale->num_p2p_clients; i++) {
4058 if (os_memcmp(stale->p2p_client_list +
4059 i * ETH_ALEN,
4060 dev, ETH_ALEN) == 0) {
4061 os_memmove(stale->p2p_client_list +
4062 i * ETH_ALEN,
4063 stale->p2p_client_list +
4064 (i + 1) * ETH_ALEN,
4065 (stale->num_p2p_clients -
4066 i - 1) * ETH_ALEN);
4067 break;
4068 }
4069 }
4070 stale->num_p2p_clients--;
4071 }
4072 save_config = 1;
4073 }
4074
4075 if (save_config)
4076 p2p_config_write(wpa_s);
4077
4078 if (s) {
4079 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4080 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4081
4082 if (persistent_go && s != persistent_go &&
4083 !persistent_go->num_p2p_clients) {
4084 /* remove empty persistent GO */
4085 wpa_config_remove_network(wpa_s->conf,
4086 persistent_go->id);
4087 /* Save config */
4088 }
4089
4090 wpa_msg_global(wpa_s, MSG_INFO,
4091 P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4092 " status=%d"
4093 " adv_id=%x adv_mac=" MACSTR
4094 " session=%x mac=" MACSTR
4095 " persist=%d%s",
4096 MAC2STR(dev), status,
4097 adv_id, MAC2STR(adv_mac),
4098 ses_id, MAC2STR(ses_mac), s->id, feat_cap_str);
4099 return;
4100 }
4101
4102 if (conncap == P2PS_SETUP_GROUP_OWNER) {
4103 /*
4104 * We need to copy the interface name. Simply saving a
4105 * pointer isn't enough, since if we use pending_interface_name
4106 * it will be overwritten when the group is added.
4107 */
4108 char go_ifname[100];
4109
4110 go_ifname[0] = '\0';
4111 if (!go_wpa_s) {
4112 wpa_s->global->pending_p2ps_group = 1;
4113 wpa_s->global->pending_p2ps_group_freq = freq;
4114
4115 if (!wpas_p2p_create_iface(wpa_s))
4116 os_memcpy(go_ifname, wpa_s->ifname,
4117 sizeof(go_ifname));
4118 else if (wpa_s->pending_interface_name[0])
4119 os_memcpy(go_ifname,
4120 wpa_s->pending_interface_name,
4121 sizeof(go_ifname));
4122
4123 if (!go_ifname[0]) {
4124 wpas_p2ps_prov_complete(
4125 wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP,
4126 dev, adv_mac, ses_mac,
4127 grp_mac, adv_id, ses_id, 0, 0,
4128 NULL, 0, 0, 0, NULL, NULL, 0, 0,
4129 NULL, 0);
4130 return;
4131 }
4132
4133 /* If PD Resp complete, start up the GO */
4134 if (response_done && persistent_go) {
4135 wpas_p2p_group_add_persistent(
4136 wpa_s, persistent_go,
4137 0, 0, freq, 0, 0, 0, 0, NULL,
4138 persistent_go->mode ==
4139 WPAS_MODE_P2P_GO ?
4140 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
4141 0, 0);
4142 } else if (response_done) {
4143 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0);
4144 }
4145
4146 if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4147 os_memcpy(wpa_s->p2ps_join_addr, grp_mac,
4148 ETH_ALEN);
4149 wpa_s->p2ps_method_config_any = 1;
4150 }
4151 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4152 os_memcpy(go_ifname, go_wpa_s->ifname,
4153 sizeof(go_ifname));
4154
4155 if (is_zero_ether_addr(grp_mac)) {
4156 wpa_dbg(go_wpa_s, MSG_DEBUG,
4157 "P2P: Setting PIN-1 for ANY");
4158 wpa_supplicant_ap_wps_pin(go_wpa_s, NULL,
4159 "12345670", NULL, 0,
4160 0);
4161 } else {
4162 wpa_dbg(go_wpa_s, MSG_DEBUG,
4163 "P2P: Setting PIN-1 for " MACSTR,
4164 MAC2STR(grp_mac));
4165 wpa_supplicant_ap_wps_pin(go_wpa_s, grp_mac,
4166 "12345670", NULL, 0,
4167 0);
4168 }
4169
4170 os_memcpy(wpa_s->p2ps_join_addr, grp_mac, ETH_ALEN);
4171 wpa_s->p2ps_method_config_any = 1;
4172 }
4173
4174 wpa_msg_global(wpa_s, MSG_INFO,
4175 P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4176 " status=%d conncap=%x"
4177 " adv_id=%x adv_mac=" MACSTR
4178 " session=%x mac=" MACSTR
4179 " dev_passwd_id=%d go=%s%s",
4180 MAC2STR(dev), status, conncap,
4181 adv_id, MAC2STR(adv_mac),
4182 ses_id, MAC2STR(ses_mac),
4183 passwd_id, go_ifname, feat_cap_str);
4184 return;
4185 }
4186
4187 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4188 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4189
4190 if (persistent_go && !persistent_go->num_p2p_clients) {
4191 /* remove empty persistent GO */
4192 wpa_config_remove_network(wpa_s->conf, persistent_go->id);
4193 }
4194
4195 if (conncap == P2PS_SETUP_CLIENT) {
4196 char ssid_hex[32 * 2 + 1];
4197
4198 if (group_ssid)
4199 wpa_snprintf_hex(ssid_hex, sizeof(ssid_hex),
4200 group_ssid, group_ssid_len);
4201 else
4202 ssid_hex[0] = '\0';
4203 wpa_msg_global(wpa_s, MSG_INFO,
4204 P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4205 " status=%d conncap=%x"
4206 " adv_id=%x adv_mac=" MACSTR
4207 " session=%x mac=" MACSTR
4208 " dev_passwd_id=%d join=" MACSTR "%s%s%s",
4209 MAC2STR(dev), status, conncap,
4210 adv_id, MAC2STR(adv_mac),
4211 ses_id, MAC2STR(ses_mac),
4212 passwd_id, MAC2STR(grp_mac), feat_cap_str,
4213 group_ssid ? " group_ssid=" : "", ssid_hex);
4214 } else {
4215 wpa_msg_global(wpa_s, MSG_INFO,
4216 P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4217 " status=%d conncap=%x"
4218 " adv_id=%x adv_mac=" MACSTR
4219 " session=%x mac=" MACSTR
4220 " dev_passwd_id=%d%s",
4221 MAC2STR(dev), status, conncap,
4222 adv_id, MAC2STR(adv_mac),
4223 ses_id, MAC2STR(ses_mac),
4224 passwd_id, feat_cap_str);
4225 }
4226 }
4227
4228
4229 static int _wpas_p2p_in_progress(void *ctx)
4230 {
4231 struct wpa_supplicant *wpa_s = ctx;
4232 return wpas_p2p_in_progress(wpa_s);
4233 }
4234
4235
4236 static int wpas_prov_disc_resp_cb(void *ctx)
4237 {
4238 struct wpa_supplicant *wpa_s = ctx;
4239 struct wpa_ssid *persistent_go;
4240 unsigned int freq;
4241
4242 if (!wpa_s->global->pending_p2ps_group)
4243 return 0;
4244
4245 freq = wpa_s->global->pending_p2ps_group_freq;
4246 wpa_s->global->pending_p2ps_group_freq = 0;
4247 wpa_s->global->pending_p2ps_group = 0;
4248
4249 if (wpas_p2p_get_go_group(wpa_s))
4250 return 0;
4251 persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4252
4253 if (persistent_go) {
4254 wpas_p2p_group_add_persistent(
4255 wpa_s, persistent_go, 0, 0, 0, 0, 0, 0, 0, NULL,
4256 persistent_go->mode == WPAS_MODE_P2P_GO ?
4257 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 0);
4258 } else {
4259 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0);
4260 }
4261
4262 return 1;
4263 }
4264
4265
4266 static int wpas_p2p_get_pref_freq_list(void *ctx, int go,
4267 unsigned int *len,
4268 unsigned int *freq_list)
4269 {
4270 struct wpa_supplicant *wpa_s = ctx;
4271
4272 return wpa_drv_get_pref_freq_list(wpa_s, go ? WPA_IF_P2P_GO :
4273 WPA_IF_P2P_CLIENT, len, freq_list);
4274 }
4275
4276
4277 /**
4278 * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
4279 * @global: Pointer to global data from wpa_supplicant_init()
4280 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4281 * Returns: 0 on success, -1 on failure
4282 */
4283 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
4284 {
4285 struct p2p_config p2p;
4286 int i;
4287
4288 if (wpa_s->conf->p2p_disabled)
4289 return 0;
4290
4291 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4292 return 0;
4293
4294 if (global->p2p)
4295 return 0;
4296
4297 os_memset(&p2p, 0, sizeof(p2p));
4298 p2p.cb_ctx = wpa_s;
4299 p2p.debug_print = wpas_p2p_debug_print;
4300 p2p.p2p_scan = wpas_p2p_scan;
4301 p2p.send_action = wpas_send_action;
4302 p2p.send_action_done = wpas_send_action_done;
4303 p2p.go_neg_completed = wpas_go_neg_completed;
4304 p2p.go_neg_req_rx = wpas_go_neg_req_rx;
4305 p2p.dev_found = wpas_dev_found;
4306 p2p.dev_lost = wpas_dev_lost;
4307 p2p.find_stopped = wpas_find_stopped;
4308 p2p.start_listen = wpas_start_listen;
4309 p2p.stop_listen = wpas_stop_listen;
4310 p2p.send_probe_resp = wpas_send_probe_resp;
4311 p2p.sd_request = wpas_sd_request;
4312 p2p.sd_response = wpas_sd_response;
4313 p2p.prov_disc_req = wpas_prov_disc_req;
4314 p2p.prov_disc_resp = wpas_prov_disc_resp;
4315 p2p.prov_disc_fail = wpas_prov_disc_fail;
4316 p2p.invitation_process = wpas_invitation_process;
4317 p2p.invitation_received = wpas_invitation_received;
4318 p2p.invitation_result = wpas_invitation_result;
4319 p2p.get_noa = wpas_get_noa;
4320 p2p.go_connected = wpas_go_connected;
4321 p2p.presence_resp = wpas_presence_resp;
4322 p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
4323 p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
4324 p2p.get_persistent_group = wpas_get_persistent_group;
4325 p2p.get_go_info = wpas_get_go_info;
4326 p2p.remove_stale_groups = wpas_remove_stale_groups;
4327 p2p.p2ps_prov_complete = wpas_p2ps_prov_complete;
4328 p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb;
4329 p2p.p2ps_group_capability = p2ps_group_capability;
4330 p2p.get_pref_freq_list = wpas_p2p_get_pref_freq_list;
4331
4332 os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
4333 os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
4334 p2p.dev_name = wpa_s->conf->device_name;
4335 p2p.manufacturer = wpa_s->conf->manufacturer;
4336 p2p.model_name = wpa_s->conf->model_name;
4337 p2p.model_number = wpa_s->conf->model_number;
4338 p2p.serial_number = wpa_s->conf->serial_number;
4339 if (wpa_s->wps) {
4340 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
4341 p2p.config_methods = wpa_s->wps->config_methods;
4342 }
4343
4344 if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
4345 wpa_printf(MSG_ERROR,
4346 "P2P: Failed to configure supported channel list");
4347 return -1;
4348 }
4349
4350 if (wpa_s->conf->p2p_listen_reg_class &&
4351 wpa_s->conf->p2p_listen_channel) {
4352 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
4353 p2p.channel = wpa_s->conf->p2p_listen_channel;
4354 p2p.channel_forced = 1;
4355 } else {
4356 /*
4357 * Pick one of the social channels randomly as the listen
4358 * channel.
4359 */
4360 if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
4361 &p2p.channel) != 0) {
4362 wpa_printf(MSG_INFO,
4363 "P2P: No social channels supported by the driver - do not enable P2P");
4364 return 0;
4365 }
4366 p2p.channel_forced = 0;
4367 }
4368 wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
4369 p2p.reg_class, p2p.channel);
4370
4371 if (wpa_s->conf->p2p_oper_reg_class &&
4372 wpa_s->conf->p2p_oper_channel) {
4373 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4374 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
4375 p2p.cfg_op_channel = 1;
4376 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
4377 "%d:%d", p2p.op_reg_class, p2p.op_channel);
4378
4379 } else {
4380 /*
4381 * Use random operation channel from 2.4 GHz band social
4382 * channels (1, 6, 11) or band 60 GHz social channel (2) if no
4383 * other preference is indicated.
4384 */
4385 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
4386 &p2p.op_channel) != 0) {
4387 wpa_printf(MSG_ERROR,
4388 "P2P: Failed to select random social channel as operation channel");
4389 return -1;
4390 }
4391 p2p.cfg_op_channel = 0;
4392 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
4393 "%d:%d", p2p.op_reg_class, p2p.op_channel);
4394 }
4395
4396 if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
4397 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
4398 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
4399 }
4400
4401 if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4402 os_memcpy(p2p.country, wpa_s->conf->country, 2);
4403 p2p.country[2] = 0x04;
4404 } else
4405 os_memcpy(p2p.country, "XX\x04", 3);
4406
4407 os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
4408 WPS_DEV_TYPE_LEN);
4409
4410 p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
4411 os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
4412 p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
4413
4414 p2p.concurrent_operations = !!(wpa_s->drv_flags &
4415 WPA_DRIVER_FLAGS_P2P_CONCURRENT);
4416
4417 p2p.max_peers = 100;
4418
4419 if (wpa_s->conf->p2p_ssid_postfix) {
4420 p2p.ssid_postfix_len =
4421 os_strlen(wpa_s->conf->p2p_ssid_postfix);
4422 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
4423 p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
4424 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
4425 p2p.ssid_postfix_len);
4426 }
4427
4428 p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
4429
4430 p2p.max_listen = wpa_s->max_remain_on_chan;
4431
4432 if (wpa_s->conf->p2p_passphrase_len >= 8 &&
4433 wpa_s->conf->p2p_passphrase_len <= 63)
4434 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4435 else
4436 p2p.passphrase_len = 8;
4437
4438 global->p2p = p2p_init(&p2p);
4439 if (global->p2p == NULL)
4440 return -1;
4441 global->p2p_init_wpa_s = wpa_s;
4442
4443 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4444 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4445 continue;
4446 p2p_add_wps_vendor_extension(
4447 global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4448 }
4449
4450 p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4451
4452 return 0;
4453 }
4454
4455
4456 /**
4457 * wpas_p2p_deinit - Deinitialize per-interface P2P data
4458 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4459 *
4460 * This function deinitialize per-interface P2P data.
4461 */
4462 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4463 {
4464 if (wpa_s->driver && wpa_s->drv_priv)
4465 wpa_drv_probe_req_report(wpa_s, 0);
4466
4467 if (wpa_s->go_params) {
4468 /* Clear any stored provisioning info */
4469 p2p_clear_provisioning_info(
4470 wpa_s->global->p2p,
4471 wpa_s->go_params->peer_device_addr);
4472 }
4473
4474 os_free(wpa_s->go_params);
4475 wpa_s->go_params = NULL;
4476 eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4477 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4478 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4479 wpa_s->p2p_long_listen = 0;
4480 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4481 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4482 wpas_p2p_remove_pending_group_interface(wpa_s);
4483 eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4484 wpas_p2p_listen_work_done(wpa_s);
4485 if (wpa_s->p2p_send_action_work) {
4486 os_free(wpa_s->p2p_send_action_work->ctx);
4487 radio_work_done(wpa_s->p2p_send_action_work);
4488 wpa_s->p2p_send_action_work = NULL;
4489 }
4490 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4491
4492 wpabuf_free(wpa_s->p2p_oob_dev_pw);
4493 wpa_s->p2p_oob_dev_pw = NULL;
4494
4495 os_free(wpa_s->p2p_group_common_freqs);
4496 wpa_s->p2p_group_common_freqs = NULL;
4497 wpa_s->p2p_group_common_freqs_num = 0;
4498
4499 /* TODO: remove group interface from the driver if this wpa_s instance
4500 * is on top of a P2P group interface */
4501 }
4502
4503
4504 /**
4505 * wpas_p2p_deinit_global - Deinitialize global P2P module
4506 * @global: Pointer to global data from wpa_supplicant_init()
4507 *
4508 * This function deinitializes the global (per device) P2P module.
4509 */
4510 static void wpas_p2p_deinit_global(struct wpa_global *global)
4511 {
4512 struct wpa_supplicant *wpa_s, *tmp;
4513
4514 wpa_s = global->ifaces;
4515
4516 wpas_p2p_service_flush(global->p2p_init_wpa_s);
4517
4518 /* Remove remaining P2P group interfaces */
4519 while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4520 wpa_s = wpa_s->next;
4521 while (wpa_s) {
4522 tmp = global->ifaces;
4523 while (tmp &&
4524 (tmp == wpa_s ||
4525 tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4526 tmp = tmp->next;
4527 }
4528 if (tmp == NULL)
4529 break;
4530 /* Disconnect from the P2P group and deinit the interface */
4531 wpas_p2p_disconnect(tmp);
4532 }
4533
4534 /*
4535 * Deinit GO data on any possibly remaining interface (if main
4536 * interface is used as GO).
4537 */
4538 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4539 if (wpa_s->ap_iface)
4540 wpas_p2p_group_deinit(wpa_s);
4541 }
4542
4543 p2p_deinit(global->p2p);
4544 global->p2p = NULL;
4545 global->p2p_init_wpa_s = NULL;
4546 }
4547
4548
4549 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4550 {
4551 if (wpa_s->conf->p2p_no_group_iface)
4552 return 0; /* separate interface disabled per configuration */
4553 if (wpa_s->drv_flags &
4554 (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4555 WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4556 return 1; /* P2P group requires a new interface in every case
4557 */
4558 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4559 return 0; /* driver does not support concurrent operations */
4560 if (wpa_s->global->ifaces->next)
4561 return 1; /* more that one interface already in use */
4562 if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4563 return 1; /* this interface is already in use */
4564 return 0;
4565 }
4566
4567
4568 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4569 const u8 *peer_addr,
4570 enum p2p_wps_method wps_method,
4571 int go_intent, const u8 *own_interface_addr,
4572 unsigned int force_freq, int persistent_group,
4573 struct wpa_ssid *ssid, unsigned int pref_freq)
4574 {
4575 if (persistent_group && wpa_s->conf->persistent_reconnect)
4576 persistent_group = 2;
4577
4578 /*
4579 * Increase GO config timeout if HT40 is used since it takes some time
4580 * to scan channels for coex purposes before the BSS can be started.
4581 */
4582 p2p_set_config_timeout(wpa_s->global->p2p,
4583 wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4584
4585 return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4586 go_intent, own_interface_addr, force_freq,
4587 persistent_group, ssid ? ssid->ssid : NULL,
4588 ssid ? ssid->ssid_len : 0,
4589 wpa_s->p2p_pd_before_go_neg, pref_freq,
4590 wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4591 0);
4592 }
4593
4594
4595 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4596 const u8 *peer_addr,
4597 enum p2p_wps_method wps_method,
4598 int go_intent, const u8 *own_interface_addr,
4599 unsigned int force_freq, int persistent_group,
4600 struct wpa_ssid *ssid, unsigned int pref_freq)
4601 {
4602 if (persistent_group && wpa_s->conf->persistent_reconnect)
4603 persistent_group = 2;
4604
4605 return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4606 go_intent, own_interface_addr, force_freq,
4607 persistent_group, ssid ? ssid->ssid : NULL,
4608 ssid ? ssid->ssid_len : 0, pref_freq,
4609 wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4610 0);
4611 }
4612
4613
4614 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4615 {
4616 wpa_s->p2p_join_scan_count++;
4617 wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4618 wpa_s->p2p_join_scan_count);
4619 if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4620 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4621 " for join operationg - stop join attempt",
4622 MAC2STR(wpa_s->pending_join_iface_addr));
4623 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4624 if (wpa_s->p2p_auto_pd) {
4625 wpa_s->p2p_auto_pd = 0;
4626 wpa_msg_global(wpa_s, MSG_INFO,
4627 P2P_EVENT_PROV_DISC_FAILURE
4628 " p2p_dev_addr=" MACSTR " status=N/A",
4629 MAC2STR(wpa_s->pending_join_dev_addr));
4630 return;
4631 }
4632 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4633 P2P_EVENT_GROUP_FORMATION_FAILURE);
4634 wpas_notify_p2p_group_formation_failure(wpa_s, "");
4635 }
4636 }
4637
4638
4639 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4640 {
4641 int res;
4642 unsigned int num, i;
4643 struct wpa_used_freq_data *freqs;
4644
4645 if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4646 /* Multiple channels are supported and not all are in use */
4647 return 0;
4648 }
4649
4650 freqs = os_calloc(wpa_s->num_multichan_concurrent,
4651 sizeof(struct wpa_used_freq_data));
4652 if (!freqs)
4653 return 1;
4654
4655 num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4656 wpa_s->num_multichan_concurrent);
4657
4658 for (i = 0; i < num; i++) {
4659 if (freqs[i].freq == freq) {
4660 wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4661 freq);
4662 res = 0;
4663 goto exit_free;
4664 }
4665 }
4666
4667 wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4668 res = 1;
4669
4670 exit_free:
4671 os_free(freqs);
4672 return res;
4673 }
4674
4675
4676 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4677 const u8 *peer_dev_addr)
4678 {
4679 struct wpa_bss *bss;
4680 int updated;
4681
4682 bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4683 if (bss == NULL)
4684 return -1;
4685 if (bss->last_update_idx < wpa_s->bss_update_idx) {
4686 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4687 "last scan");
4688 return 0;
4689 }
4690
4691 updated = os_reltime_before(&wpa_s->p2p_auto_started,
4692 &bss->last_update);
4693 wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4694 "%ld.%06ld (%supdated in last scan)",
4695 bss->last_update.sec, bss->last_update.usec,
4696 updated ? "": "not ");
4697
4698 return updated;
4699 }
4700
4701
4702 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4703 struct wpa_scan_results *scan_res)
4704 {
4705 struct wpa_bss *bss = NULL;
4706 int freq;
4707 u8 iface_addr[ETH_ALEN];
4708
4709 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4710
4711 if (wpa_s->global->p2p_disabled)
4712 return;
4713
4714 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4715 scan_res ? (int) scan_res->num : -1,
4716 wpa_s->p2p_auto_join ? "auto_" : "");
4717
4718 if (scan_res)
4719 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4720
4721 if (wpa_s->p2p_auto_pd) {
4722 int join = wpas_p2p_peer_go(wpa_s,
4723 wpa_s->pending_join_dev_addr);
4724 if (join == 0 &&
4725 wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4726 wpa_s->auto_pd_scan_retry++;
4727 bss = wpa_bss_get_bssid_latest(
4728 wpa_s, wpa_s->pending_join_dev_addr);
4729 if (bss) {
4730 freq = bss->freq;
4731 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4732 "the peer " MACSTR " at %d MHz",
4733 wpa_s->auto_pd_scan_retry,
4734 MAC2STR(wpa_s->
4735 pending_join_dev_addr),
4736 freq);
4737 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4738 return;
4739 }
4740 }
4741
4742 if (join < 0)
4743 join = 0;
4744
4745 wpa_s->p2p_auto_pd = 0;
4746 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4747 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4748 MAC2STR(wpa_s->pending_join_dev_addr), join);
4749 if (p2p_prov_disc_req(wpa_s->global->p2p,
4750 wpa_s->pending_join_dev_addr, NULL,
4751 wpa_s->pending_pd_config_methods, join,
4752 0, wpa_s->user_initiated_pd) < 0) {
4753 wpa_s->p2p_auto_pd = 0;
4754 wpa_msg_global(wpa_s, MSG_INFO,
4755 P2P_EVENT_PROV_DISC_FAILURE
4756 " p2p_dev_addr=" MACSTR " status=N/A",
4757 MAC2STR(wpa_s->pending_join_dev_addr));
4758 }
4759 return;
4760 }
4761
4762 if (wpa_s->p2p_auto_join) {
4763 int join = wpas_p2p_peer_go(wpa_s,
4764 wpa_s->pending_join_dev_addr);
4765 if (join < 0) {
4766 wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4767 "running a GO -> use GO Negotiation");
4768 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4769 P2P_EVENT_FALLBACK_TO_GO_NEG
4770 "reason=peer-not-running-GO");
4771 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4772 wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4773 wpa_s->p2p_persistent_group, 0, 0, 0,
4774 wpa_s->p2p_go_intent,
4775 wpa_s->p2p_connect_freq,
4776 wpa_s->p2p_go_vht_center_freq2,
4777 wpa_s->p2p_persistent_id,
4778 wpa_s->p2p_pd_before_go_neg,
4779 wpa_s->p2p_go_ht40,
4780 wpa_s->p2p_go_vht,
4781 wpa_s->p2p_go_max_oper_chwidth,
4782 NULL, 0);
4783 return;
4784 }
4785
4786 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4787 "try to join the group", join ? "" :
4788 " in older scan");
4789 if (!join) {
4790 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4791 P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED);
4792 wpa_s->p2p_fallback_to_go_neg = 1;
4793 }
4794 }
4795
4796 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4797 wpa_s->pending_join_iface_addr);
4798 if (freq < 0 &&
4799 p2p_get_interface_addr(wpa_s->global->p2p,
4800 wpa_s->pending_join_dev_addr,
4801 iface_addr) == 0 &&
4802 os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
4803 && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
4804 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4805 "address for join from " MACSTR " to " MACSTR
4806 " based on newly discovered P2P peer entry",
4807 MAC2STR(wpa_s->pending_join_iface_addr),
4808 MAC2STR(iface_addr));
4809 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4810 ETH_ALEN);
4811
4812 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4813 wpa_s->pending_join_iface_addr);
4814 }
4815 if (freq >= 0) {
4816 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4817 "from P2P peer table: %d MHz", freq);
4818 }
4819 if (wpa_s->p2p_join_ssid_len) {
4820 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4821 MACSTR " and SSID %s",
4822 MAC2STR(wpa_s->pending_join_iface_addr),
4823 wpa_ssid_txt(wpa_s->p2p_join_ssid,
4824 wpa_s->p2p_join_ssid_len));
4825 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4826 wpa_s->p2p_join_ssid,
4827 wpa_s->p2p_join_ssid_len);
4828 } else if (!bss) {
4829 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4830 MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4831 bss = wpa_bss_get_bssid_latest(wpa_s,
4832 wpa_s->pending_join_iface_addr);
4833 }
4834 if (bss) {
4835 u8 dev_addr[ETH_ALEN];
4836
4837 freq = bss->freq;
4838 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4839 "from BSS table: %d MHz (SSID %s)", freq,
4840 wpa_ssid_txt(bss->ssid, bss->ssid_len));
4841 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len,
4842 dev_addr) == 0 &&
4843 os_memcmp(wpa_s->pending_join_dev_addr,
4844 wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 &&
4845 os_memcmp(dev_addr, wpa_s->pending_join_dev_addr,
4846 ETH_ALEN) != 0) {
4847 wpa_printf(MSG_DEBUG,
4848 "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")",
4849 MAC2STR(dev_addr),
4850 MAC2STR(wpa_s->pending_join_dev_addr));
4851 os_memcpy(wpa_s->pending_join_dev_addr, dev_addr,
4852 ETH_ALEN);
4853 }
4854 }
4855 if (freq > 0) {
4856 u16 method;
4857
4858 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4859 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4860 P2P_EVENT_GROUP_FORMATION_FAILURE
4861 "reason=FREQ_CONFLICT");
4862 wpas_notify_p2p_group_formation_failure(
4863 wpa_s, "FREQ_CONFLICT");
4864 return;
4865 }
4866
4867 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4868 "prior to joining an existing group (GO " MACSTR
4869 " freq=%u MHz)",
4870 MAC2STR(wpa_s->pending_join_dev_addr), freq);
4871 wpa_s->pending_pd_before_join = 1;
4872
4873 switch (wpa_s->pending_join_wps_method) {
4874 case WPS_PIN_DISPLAY:
4875 method = WPS_CONFIG_KEYPAD;
4876 break;
4877 case WPS_PIN_KEYPAD:
4878 method = WPS_CONFIG_DISPLAY;
4879 break;
4880 case WPS_PBC:
4881 method = WPS_CONFIG_PUSHBUTTON;
4882 break;
4883 case WPS_P2PS:
4884 method = WPS_CONFIG_P2PS;
4885 break;
4886 default:
4887 method = 0;
4888 break;
4889 }
4890
4891 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4892 wpa_s->pending_join_dev_addr) ==
4893 method)) {
4894 /*
4895 * We have already performed provision discovery for
4896 * joining the group. Proceed directly to join
4897 * operation without duplicated provision discovery. */
4898 wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4899 "with " MACSTR " already done - proceed to "
4900 "join",
4901 MAC2STR(wpa_s->pending_join_dev_addr));
4902 wpa_s->pending_pd_before_join = 0;
4903 goto start;
4904 }
4905
4906 if (p2p_prov_disc_req(wpa_s->global->p2p,
4907 wpa_s->pending_join_dev_addr,
4908 NULL, method, 1,
4909 freq, wpa_s->user_initiated_pd) < 0) {
4910 wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4911 "Discovery Request before joining an "
4912 "existing group");
4913 wpa_s->pending_pd_before_join = 0;
4914 goto start;
4915 }
4916 return;
4917 }
4918
4919 wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4920 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4921 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4922 wpas_p2p_check_join_scan_limit(wpa_s);
4923 return;
4924
4925 start:
4926 /* Start join operation immediately */
4927 wpas_p2p_join_start(wpa_s, 0, wpa_s->p2p_join_ssid,
4928 wpa_s->p2p_join_ssid_len);
4929 }
4930
4931
4932 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4933 const u8 *ssid, size_t ssid_len)
4934 {
4935 int ret;
4936 struct wpa_driver_scan_params params;
4937 struct wpabuf *wps_ie, *ies;
4938 size_t ielen;
4939 int freqs[2] = { 0, 0 };
4940 unsigned int bands;
4941
4942 os_memset(&params, 0, sizeof(params));
4943
4944 /* P2P Wildcard SSID */
4945 params.num_ssids = 1;
4946 if (ssid && ssid_len) {
4947 params.ssids[0].ssid = ssid;
4948 params.ssids[0].ssid_len = ssid_len;
4949 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4950 wpa_s->p2p_join_ssid_len = ssid_len;
4951 } else {
4952 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4953 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4954 wpa_s->p2p_join_ssid_len = 0;
4955 }
4956
4957 wpa_s->wps->dev.p2p = 1;
4958 wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4959 wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4960 NULL);
4961 if (wps_ie == NULL) {
4962 wpas_p2p_scan_res_join(wpa_s, NULL);
4963 return;
4964 }
4965
4966 if (!freq) {
4967 int oper_freq;
4968 /*
4969 * If freq is not provided, check the operating freq of the GO
4970 * and use a single channel scan on if possible.
4971 */
4972 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4973 wpa_s->pending_join_iface_addr);
4974 if (oper_freq > 0)
4975 freq = oper_freq;
4976 }
4977 if (freq > 0) {
4978 freqs[0] = freq;
4979 params.freqs = freqs;
4980 }
4981
4982 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4983 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4984 if (ies == NULL) {
4985 wpabuf_free(wps_ie);
4986 wpas_p2p_scan_res_join(wpa_s, NULL);
4987 return;
4988 }
4989 wpabuf_put_buf(ies, wps_ie);
4990 wpabuf_free(wps_ie);
4991
4992 bands = wpas_get_bands(wpa_s, freqs);
4993 p2p_scan_ie(wpa_s->global->p2p, ies, NULL, bands);
4994
4995 params.p2p_probe = 1;
4996 params.extra_ies = wpabuf_head(ies);
4997 params.extra_ies_len = wpabuf_len(ies);
4998
4999 /*
5000 * Run a scan to update BSS table and start Provision Discovery once
5001 * the new scan results become available.
5002 */
5003 ret = wpa_drv_scan(wpa_s, &params);
5004 if (!ret) {
5005 os_get_reltime(&wpa_s->scan_trigger_time);
5006 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
5007 wpa_s->own_scan_requested = 1;
5008 }
5009
5010 wpabuf_free(ies);
5011
5012 if (ret) {
5013 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
5014 "try again later");
5015 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5016 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
5017 wpas_p2p_check_join_scan_limit(wpa_s);
5018 }
5019 }
5020
5021
5022 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
5023 {
5024 struct wpa_supplicant *wpa_s = eloop_ctx;
5025 wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
5026 }
5027
5028
5029 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
5030 const u8 *dev_addr, enum p2p_wps_method wps_method,
5031 int auto_join, int op_freq,
5032 const u8 *ssid, size_t ssid_len)
5033 {
5034 wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
5035 MACSTR " dev " MACSTR " op_freq=%d)%s",
5036 MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
5037 auto_join ? " (auto_join)" : "");
5038 if (ssid && ssid_len) {
5039 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
5040 wpa_ssid_txt(ssid, ssid_len));
5041 }
5042
5043 wpa_s->p2p_auto_pd = 0;
5044 wpa_s->p2p_auto_join = !!auto_join;
5045 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
5046 os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
5047 wpa_s->pending_join_wps_method = wps_method;
5048
5049 /* Make sure we are not running find during connection establishment */
5050 wpas_p2p_stop_find(wpa_s);
5051
5052 wpa_s->p2p_join_scan_count = 0;
5053 wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
5054 return 0;
5055 }
5056
5057
5058 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
5059 const u8 *ssid, size_t ssid_len)
5060 {
5061 struct wpa_supplicant *group;
5062 struct p2p_go_neg_results res;
5063 struct wpa_bss *bss;
5064
5065 group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
5066 if (group == NULL)
5067 return -1;
5068 if (group != wpa_s) {
5069 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
5070 sizeof(group->p2p_pin));
5071 group->p2p_wps_method = wpa_s->p2p_wps_method;
5072 } else {
5073 /*
5074 * Need to mark the current interface for p2p_group_formation
5075 * when a separate group interface is not used. This is needed
5076 * to allow p2p_cancel stop a pending p2p_connect-join.
5077 * wpas_p2p_init_group_interface() addresses this for the case
5078 * where a separate group interface is used.
5079 */
5080 wpa_s->global->p2p_group_formation = wpa_s;
5081 }
5082
5083 group->p2p_in_provisioning = 1;
5084 group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
5085
5086 os_memset(&res, 0, sizeof(res));
5087 os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
5088 os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
5089 ETH_ALEN);
5090 res.wps_method = wpa_s->pending_join_wps_method;
5091 if (freq && ssid && ssid_len) {
5092 res.freq = freq;
5093 res.ssid_len = ssid_len;
5094 os_memcpy(res.ssid, ssid, ssid_len);
5095 } else {
5096 if (ssid && ssid_len) {
5097 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
5098 ssid, ssid_len);
5099 } else {
5100 bss = wpa_bss_get_bssid_latest(
5101 wpa_s, wpa_s->pending_join_iface_addr);
5102 }
5103 if (bss) {
5104 res.freq = bss->freq;
5105 res.ssid_len = bss->ssid_len;
5106 os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
5107 wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
5108 bss->freq,
5109 wpa_ssid_txt(bss->ssid, bss->ssid_len));
5110 } else if (ssid && ssid_len) {
5111 res.ssid_len = ssid_len;
5112 os_memcpy(res.ssid, ssid, ssid_len);
5113 wpa_printf(MSG_DEBUG, "P2P: Join target GO (SSID %s)",
5114 wpa_ssid_txt(ssid, ssid_len));
5115 }
5116 }
5117
5118 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
5119 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
5120 "starting client");
5121 wpa_drv_cancel_remain_on_channel(wpa_s);
5122 wpa_s->off_channel_freq = 0;
5123 wpa_s->roc_waiting_drv_freq = 0;
5124 }
5125 wpas_start_wps_enrollee(group, &res);
5126
5127 /*
5128 * Allow a longer timeout for join-a-running-group than normal 15
5129 * second group formation timeout since the GO may not have authorized
5130 * our connection yet.
5131 */
5132 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
5133 eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
5134 wpa_s, NULL);
5135
5136 return 0;
5137 }
5138
5139
5140 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
5141 int *force_freq, int *pref_freq, int go,
5142 unsigned int *pref_freq_list,
5143 unsigned int *num_pref_freq)
5144 {
5145 struct wpa_used_freq_data *freqs;
5146 int res, best_freq, num_unused;
5147 unsigned int freq_in_use = 0, num, i, max_pref_freq;
5148
5149 max_pref_freq = *num_pref_freq;
5150 *num_pref_freq = 0;
5151
5152 freqs = os_calloc(wpa_s->num_multichan_concurrent,
5153 sizeof(struct wpa_used_freq_data));
5154 if (!freqs)
5155 return -1;
5156
5157 num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5158 wpa_s->num_multichan_concurrent);
5159
5160 /*
5161 * It is possible that the total number of used frequencies is bigger
5162 * than the number of frequencies used for P2P, so get the system wide
5163 * number of unused frequencies.
5164 */
5165 num_unused = wpas_p2p_num_unused_channels(wpa_s);
5166
5167 wpa_printf(MSG_DEBUG,
5168 "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
5169 freq, wpa_s->num_multichan_concurrent, num, num_unused);
5170
5171 if (freq > 0) {
5172 int ret;
5173 if (go)
5174 ret = p2p_supported_freq(wpa_s->global->p2p, freq);
5175 else
5176 ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
5177 if (!ret) {
5178 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5179 ieee80211_is_dfs(freq)) {
5180 /*
5181 * If freq is a DFS channel and DFS is offloaded
5182 * to the driver, allow P2P GO to use it.
5183 */
5184 wpa_printf(MSG_DEBUG,
5185 "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver",
5186 freq);
5187 } else {
5188 wpa_printf(MSG_DEBUG,
5189 "P2P: The forced channel (%u MHz) is not supported for P2P uses",
5190 freq);
5191 res = -3;
5192 goto exit_free;
5193 }
5194 }
5195
5196 for (i = 0; i < num; i++) {
5197 if (freqs[i].freq == freq)
5198 freq_in_use = 1;
5199 }
5200
5201 if (num_unused <= 0 && !freq_in_use) {
5202 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
5203 freq);
5204 res = -2;
5205 goto exit_free;
5206 }
5207 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
5208 "requested channel (%u MHz)", freq);
5209 *force_freq = freq;
5210 goto exit_ok;
5211 }
5212
5213 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5214
5215 if (!wpa_s->conf->num_p2p_pref_chan && *pref_freq == 0) {
5216 enum wpa_driver_if_type iface_type;
5217
5218 if (go)
5219 iface_type = WPA_IF_P2P_GO;
5220 else
5221 iface_type = WPA_IF_P2P_CLIENT;
5222
5223 wpa_printf(MSG_DEBUG, "P2P: best_freq=%d, go=%d",
5224 best_freq, go);
5225
5226 res = wpa_drv_get_pref_freq_list(wpa_s, iface_type,
5227 &max_pref_freq,
5228 pref_freq_list);
5229 if (!res && max_pref_freq > 0) {
5230 *num_pref_freq = max_pref_freq;
5231 i = 0;
5232 while (wpas_p2p_disallowed_freq(wpa_s->global,
5233 pref_freq_list[i]) &&
5234 i < *num_pref_freq) {
5235 wpa_printf(MSG_DEBUG,
5236 "P2P: preferred_freq_list[%d]=%d is disallowed",
5237 i, pref_freq_list[i]);
5238 i++;
5239 }
5240 if (i != *num_pref_freq) {
5241 best_freq = pref_freq_list[i];
5242 wpa_printf(MSG_DEBUG,
5243 "P2P: Using preferred_freq_list[%d]=%d",
5244 i, best_freq);
5245 } else {
5246 wpa_printf(MSG_DEBUG,
5247 "P2P: All driver preferred frequencies are disallowed for P2P use");
5248 *num_pref_freq = 0;
5249 }
5250 } else {
5251 wpa_printf(MSG_DEBUG,
5252 "P2P: No preferred frequency list available");
5253 }
5254 }
5255
5256 /* We have a candidate frequency to use */
5257 if (best_freq > 0) {
5258 if (*pref_freq == 0 && num_unused > 0) {
5259 wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
5260 best_freq);
5261 *pref_freq = best_freq;
5262 } else {
5263 wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
5264 best_freq);
5265 *force_freq = best_freq;
5266 }
5267 } else if (num_unused > 0) {
5268 wpa_printf(MSG_DEBUG,
5269 "P2P: Current operating channels are not available for P2P. Try to use another channel");
5270 *force_freq = 0;
5271 } else {
5272 wpa_printf(MSG_DEBUG,
5273 "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
5274 res = -2;
5275 goto exit_free;
5276 }
5277
5278 exit_ok:
5279 res = 0;
5280 exit_free:
5281 os_free(freqs);
5282 return res;
5283 }
5284
5285
5286 /**
5287 * wpas_p2p_connect - Request P2P Group Formation to be started
5288 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5289 * @peer_addr: Address of the peer P2P Device
5290 * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
5291 * @persistent_group: Whether to create a persistent group
5292 * @auto_join: Whether to select join vs. GO Negotiation automatically
5293 * @join: Whether to join an existing group (as a client) instead of starting
5294 * Group Owner negotiation; @peer_addr is BSSID in that case
5295 * @auth: Whether to only authorize the connection instead of doing that and
5296 * initiating Group Owner negotiation
5297 * @go_intent: GO Intent or -1 to use default
5298 * @freq: Frequency for the group or 0 for auto-selection
5299 * @freq2: Center frequency of segment 1 for the GO operating in VHT 80P80 mode
5300 * @persistent_id: Persistent group credentials to use for forcing GO
5301 * parameters or -1 to generate new values (SSID/passphrase)
5302 * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
5303 * interoperability workaround when initiating group formation
5304 * @ht40: Start GO with 40 MHz channel width
5305 * @vht: Start GO with VHT support
5306 * @vht_chwidth: Channel width supported by GO operating with VHT support
5307 * (VHT_CHANWIDTH_*).
5308 * @group_ssid: Specific Group SSID for join or %NULL if not set
5309 * @group_ssid_len: Length of @group_ssid in octets
5310 * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
5311 * failure, -2 on failure due to channel not currently available,
5312 * -3 if forced channel is not supported
5313 */
5314 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5315 const char *pin, enum p2p_wps_method wps_method,
5316 int persistent_group, int auto_join, int join, int auth,
5317 int go_intent, int freq, unsigned int vht_center_freq2,
5318 int persistent_id, int pd, int ht40, int vht,
5319 unsigned int vht_chwidth, const u8 *group_ssid,
5320 size_t group_ssid_len)
5321 {
5322 int force_freq = 0, pref_freq = 0;
5323 int ret = 0, res;
5324 enum wpa_driver_if_type iftype;
5325 const u8 *if_addr;
5326 struct wpa_ssid *ssid = NULL;
5327 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
5328
5329 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5330 return -1;
5331
5332 if (persistent_id >= 0) {
5333 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
5334 if (ssid == NULL || ssid->disabled != 2 ||
5335 ssid->mode != WPAS_MODE_P2P_GO)
5336 return -1;
5337 }
5338
5339 os_free(wpa_s->global->add_psk);
5340 wpa_s->global->add_psk = NULL;
5341
5342 wpa_s->global->p2p_fail_on_wps_complete = 0;
5343 wpa_s->global->pending_p2ps_group = 0;
5344 wpa_s->global->pending_p2ps_group_freq = 0;
5345 wpa_s->p2ps_method_config_any = 0;
5346
5347 if (go_intent < 0)
5348 go_intent = wpa_s->conf->p2p_go_intent;
5349
5350 if (!auth)
5351 wpa_s->p2p_long_listen = 0;
5352
5353 wpa_s->p2p_wps_method = wps_method;
5354 wpa_s->p2p_persistent_group = !!persistent_group;
5355 wpa_s->p2p_persistent_id = persistent_id;
5356 wpa_s->p2p_go_intent = go_intent;
5357 wpa_s->p2p_connect_freq = freq;
5358 wpa_s->p2p_fallback_to_go_neg = 0;
5359 wpa_s->p2p_pd_before_go_neg = !!pd;
5360 wpa_s->p2p_go_ht40 = !!ht40;
5361 wpa_s->p2p_go_vht = !!vht;
5362 wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
5363 wpa_s->p2p_go_max_oper_chwidth = vht_chwidth;
5364
5365 if (pin)
5366 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
5367 else if (wps_method == WPS_PIN_DISPLAY) {
5368 if (wps_generate_pin((unsigned int *) &ret) < 0)
5369 return -1;
5370 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin),
5371 "%08d", ret);
5372 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res))
5373 wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0';
5374 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
5375 wpa_s->p2p_pin);
5376 } else
5377 wpa_s->p2p_pin[0] = '\0';
5378
5379 if (join || auto_join) {
5380 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
5381 if (auth) {
5382 wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
5383 "connect a running group from " MACSTR,
5384 MAC2STR(peer_addr));
5385 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5386 return ret;
5387 }
5388 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
5389 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
5390 iface_addr) < 0) {
5391 os_memcpy(iface_addr, peer_addr, ETH_ALEN);
5392 p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
5393 dev_addr);
5394 }
5395 if (auto_join) {
5396 os_get_reltime(&wpa_s->p2p_auto_started);
5397 wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
5398 "%ld.%06ld",
5399 wpa_s->p2p_auto_started.sec,
5400 wpa_s->p2p_auto_started.usec);
5401 }
5402 wpa_s->user_initiated_pd = 1;
5403 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
5404 auto_join, freq,
5405 group_ssid, group_ssid_len) < 0)
5406 return -1;
5407 return ret;
5408 }
5409
5410 size = P2P_MAX_PREF_CHANNELS;
5411 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5412 go_intent == 15, pref_freq_list, &size);
5413 if (res)
5414 return res;
5415 wpas_p2p_set_own_freq_preference(wpa_s,
5416 force_freq ? force_freq : pref_freq);
5417
5418 p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
5419
5420 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
5421
5422 if (wpa_s->create_p2p_iface) {
5423 /* Prepare to add a new interface for the group */
5424 iftype = WPA_IF_P2P_GROUP;
5425 if (go_intent == 15)
5426 iftype = WPA_IF_P2P_GO;
5427 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
5428 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
5429 "interface for the group");
5430 return -1;
5431 }
5432
5433 if_addr = wpa_s->pending_interface_addr;
5434 } else {
5435 if (wpa_s->p2p_mgmt)
5436 if_addr = wpa_s->parent->own_addr;
5437 else
5438 if_addr = wpa_s->own_addr;
5439 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
5440 }
5441
5442 if (auth) {
5443 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
5444 go_intent, if_addr,
5445 force_freq, persistent_group, ssid,
5446 pref_freq) < 0)
5447 return -1;
5448 return ret;
5449 }
5450
5451 if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
5452 go_intent, if_addr, force_freq,
5453 persistent_group, ssid, pref_freq) < 0) {
5454 if (wpa_s->create_p2p_iface)
5455 wpas_p2p_remove_pending_group_interface(wpa_s);
5456 return -1;
5457 }
5458 return ret;
5459 }
5460
5461
5462 /**
5463 * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
5464 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5465 * @freq: Frequency of the channel in MHz
5466 * @duration: Duration of the stay on the channel in milliseconds
5467 *
5468 * This callback is called when the driver indicates that it has started the
5469 * requested remain-on-channel duration.
5470 */
5471 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5472 unsigned int freq, unsigned int duration)
5473 {
5474 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5475 return;
5476 wpa_printf(MSG_DEBUG, "P2P: remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d roc_waiting_drv_freq=%d freq=%u duration=%u)",
5477 wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5478 wpa_s->roc_waiting_drv_freq, freq, duration);
5479 if (wpa_s->off_channel_freq &&
5480 wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
5481 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
5482 wpa_s->pending_listen_duration);
5483 wpa_s->pending_listen_freq = 0;
5484 } else {
5485 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
5486 wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5487 freq, duration);
5488 }
5489 }
5490
5491
5492 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout)
5493 {
5494 /* Limit maximum Listen state time based on driver limitation. */
5495 if (timeout > wpa_s->max_remain_on_chan)
5496 timeout = wpa_s->max_remain_on_chan;
5497
5498 return p2p_listen(wpa_s->global->p2p, timeout);
5499 }
5500
5501
5502 /**
5503 * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
5504 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5505 * @freq: Frequency of the channel in MHz
5506 *
5507 * This callback is called when the driver indicates that a remain-on-channel
5508 * operation has been completed, i.e., the duration on the requested channel
5509 * has timed out.
5510 */
5511 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5512 unsigned int freq)
5513 {
5514 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
5515 "(p2p_long_listen=%d ms pending_action_tx=%p)",
5516 wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
5517 wpas_p2p_listen_work_done(wpa_s);
5518 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5519 return;
5520 if (wpa_s->p2p_long_listen > 0)
5521 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
5522 if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
5523 return; /* P2P module started a new operation */
5524 if (offchannel_pending_action_tx(wpa_s))
5525 return;
5526 if (wpa_s->p2p_long_listen > 0) {
5527 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
5528 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
5529 } else {
5530 /*
5531 * When listen duration is over, stop listen & update p2p_state
5532 * to IDLE.
5533 */
5534 p2p_stop_listen(wpa_s->global->p2p);
5535 }
5536 }
5537
5538
5539 /**
5540 * wpas_p2p_group_remove - Remove a P2P group
5541 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5542 * @ifname: Network interface name of the group interface or "*" to remove all
5543 * groups
5544 * Returns: 0 on success, -1 on failure
5545 *
5546 * This function is used to remove a P2P group. This can be used to disconnect
5547 * from a group in which the local end is a P2P Client or to end a P2P Group in
5548 * case the local end is the Group Owner. If a virtual network interface was
5549 * created for this group, that interface will be removed. Otherwise, only the
5550 * configured P2P group network will be removed from the interface.
5551 */
5552 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
5553 {
5554 struct wpa_global *global = wpa_s->global;
5555 struct wpa_supplicant *calling_wpa_s = wpa_s;
5556
5557 if (os_strcmp(ifname, "*") == 0) {
5558 struct wpa_supplicant *prev;
5559 wpa_s = global->ifaces;
5560 while (wpa_s) {
5561 prev = wpa_s;
5562 wpa_s = wpa_s->next;
5563 if (prev->p2p_group_interface !=
5564 NOT_P2P_GROUP_INTERFACE ||
5565 (prev->current_ssid &&
5566 prev->current_ssid->p2p_group))
5567 wpas_p2p_disconnect_safely(prev, calling_wpa_s);
5568 }
5569 return 0;
5570 }
5571
5572 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5573 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5574 break;
5575 }
5576
5577 return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s);
5578 }
5579
5580
5581 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
5582 {
5583 unsigned int r;
5584
5585 if (!wpa_s->conf->num_p2p_pref_chan && !freq) {
5586 unsigned int i, size = P2P_MAX_PREF_CHANNELS;
5587 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS];
5588 int res;
5589
5590 res = wpa_drv_get_pref_freq_list(wpa_s, WPA_IF_P2P_GO,
5591 &size, pref_freq_list);
5592 if (!res && size > 0) {
5593 i = 0;
5594 while (wpas_p2p_disallowed_freq(wpa_s->global,
5595 pref_freq_list[i]) &&
5596 i < size) {
5597 wpa_printf(MSG_DEBUG,
5598 "P2P: preferred_freq_list[%d]=%d is disallowed",
5599 i, pref_freq_list[i]);
5600 i++;
5601 }
5602 if (i != size) {
5603 freq = pref_freq_list[i];
5604 wpa_printf(MSG_DEBUG,
5605 "P2P: Using preferred_freq_list[%d]=%d",
5606 i, freq);
5607 } else {
5608 wpa_printf(MSG_DEBUG,
5609 "P2P: All driver preferred frequencies are disallowed for P2P use");
5610 }
5611 } else {
5612 wpa_printf(MSG_DEBUG,
5613 "P2P: No preferred frequency list available");
5614 }
5615 }
5616
5617 if (freq == 2) {
5618 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
5619 "band");
5620 if (wpa_s->best_24_freq > 0 &&
5621 p2p_supported_freq_go(wpa_s->global->p2p,
5622 wpa_s->best_24_freq)) {
5623 freq = wpa_s->best_24_freq;
5624 wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
5625 "channel: %d MHz", freq);
5626 } else {
5627 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5628 return -1;
5629 freq = 2412 + (r % 3) * 25;
5630 wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
5631 "channel: %d MHz", freq);
5632 }
5633 }
5634
5635 if (freq == 5) {
5636 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
5637 "band");
5638 if (wpa_s->best_5_freq > 0 &&
5639 p2p_supported_freq_go(wpa_s->global->p2p,
5640 wpa_s->best_5_freq)) {
5641 freq = wpa_s->best_5_freq;
5642 wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
5643 "channel: %d MHz", freq);
5644 } else {
5645 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5646 return -1;
5647 freq = 5180 + (r % 4) * 20;
5648 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5649 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5650 "5 GHz channel for P2P group");
5651 return -1;
5652 }
5653 wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5654 "channel: %d MHz", freq);
5655 }
5656 }
5657
5658 if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5659 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5660 ieee80211_is_dfs(freq)) {
5661 /*
5662 * If freq is a DFS channel and DFS is offloaded to the
5663 * driver, allow P2P GO to use it.
5664 */
5665 wpa_printf(MSG_DEBUG, "P2P: "
5666 "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded",
5667 __func__, freq);
5668 return freq;
5669 }
5670 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5671 "(%u MHz) is not supported for P2P uses",
5672 freq);
5673 return -1;
5674 }
5675
5676 return freq;
5677 }
5678
5679
5680 static int wpas_p2p_supported_freq_go(struct wpa_supplicant *wpa_s,
5681 const struct p2p_channels *channels,
5682 int freq)
5683 {
5684 if (!wpas_p2p_disallowed_freq(wpa_s->global, freq) &&
5685 p2p_supported_freq_go(wpa_s->global->p2p, freq) &&
5686 freq_included(wpa_s, channels, freq))
5687 return 1;
5688 return 0;
5689 }
5690
5691
5692 static void wpas_p2p_select_go_freq_no_pref(struct wpa_supplicant *wpa_s,
5693 struct p2p_go_neg_results *params,
5694 const struct p2p_channels *channels)
5695 {
5696 unsigned int i, r;
5697
5698 /* first try some random selection of the social channels */
5699 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5700 return;
5701
5702 for (i = 0; i < 3; i++) {
5703 params->freq = 2412 + ((r + i) % 3) * 25;
5704 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5705 goto out;
5706 }
5707
5708 /* try all other channels in operating class 81 */
5709 for (i = 0; i < 11; i++) {
5710 params->freq = 2412 + i * 5;
5711
5712 /* skip social channels; covered in the previous loop */
5713 if (params->freq == 2412 ||
5714 params->freq == 2437 ||
5715 params->freq == 2462)
5716 continue;
5717
5718 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5719 goto out;
5720 }
5721
5722 /* try all channels in operating class 115 */
5723 for (i = 0; i < 4; i++) {
5724 params->freq = 5180 + i * 20;
5725 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5726 freq_included(wpa_s, channels, params->freq) &&
5727 p2p_supported_freq(wpa_s->global->p2p, params->freq))
5728 goto out;
5729 }
5730
5731 /* try all channels in operating class 124 */
5732 for (i = 0; i < 4; i++) {
5733 params->freq = 5745 + i * 20;
5734 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5735 freq_included(wpa_s, channels, params->freq) &&
5736 p2p_supported_freq(wpa_s->global->p2p, params->freq))
5737 goto out;
5738 }
5739
5740 /* try social channel class 180 channel 2 */
5741 params->freq = 58320 + 1 * 2160;
5742 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5743 freq_included(wpa_s, channels, params->freq) &&
5744 p2p_supported_freq(wpa_s->global->p2p, params->freq))
5745 goto out;
5746
5747 /* try all channels in reg. class 180 */
5748 for (i = 0; i < 4; i++) {
5749 params->freq = 58320 + i * 2160;
5750 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5751 freq_included(wpa_s, channels, params->freq) &&
5752 p2p_supported_freq(wpa_s->global->p2p, params->freq))
5753 goto out;
5754 }
5755
5756 params->freq = 0;
5757 wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed");
5758 return;
5759 out:
5760 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5761 params->freq);
5762 }
5763
5764
5765 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5766 struct p2p_go_neg_results *params,
5767 int freq, int vht_center_freq2, int ht40,
5768 int vht, int max_oper_chwidth,
5769 const struct p2p_channels *channels)
5770 {
5771 struct wpa_used_freq_data *freqs;
5772 unsigned int cand;
5773 unsigned int num, i;
5774 int ignore_no_freqs = 0;
5775 int unused_channels = wpas_p2p_num_unused_channels(wpa_s) > 0;
5776
5777 os_memset(params, 0, sizeof(*params));
5778 params->role_go = 1;
5779 params->ht40 = ht40;
5780 params->vht = vht;
5781 params->max_oper_chwidth = max_oper_chwidth;
5782 params->vht_center_freq2 = vht_center_freq2;
5783
5784 freqs = os_calloc(wpa_s->num_multichan_concurrent,
5785 sizeof(struct wpa_used_freq_data));
5786 if (!freqs)
5787 return -1;
5788
5789 num = get_shared_radio_freqs_data(wpa_s, freqs,
5790 wpa_s->num_multichan_concurrent);
5791
5792 if (wpa_s->current_ssid &&
5793 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO &&
5794 wpa_s->wpa_state == WPA_COMPLETED) {
5795 wpa_printf(MSG_DEBUG, "P2P: %s called for an active GO",
5796 __func__);
5797
5798 /*
5799 * If the frequency selection is done for an active P2P GO that
5800 * is not sharing a frequency, allow to select a new frequency
5801 * even if there are no unused frequencies as we are about to
5802 * move the P2P GO so its frequency can be re-used.
5803 */
5804 for (i = 0; i < num; i++) {
5805 if (freqs[i].freq == wpa_s->current_ssid->frequency &&
5806 freqs[i].flags == 0) {
5807 ignore_no_freqs = 1;
5808 break;
5809 }
5810 }
5811 }
5812
5813 /* try using the forced freq */
5814 if (freq) {
5815 if (!wpas_p2p_supported_freq_go(wpa_s, channels, freq)) {
5816 wpa_printf(MSG_DEBUG,
5817 "P2P: Forced GO freq %d MHz not accepted",
5818 freq);
5819 goto fail;
5820 }
5821
5822 for (i = 0; i < num; i++) {
5823 if (freqs[i].freq == freq) {
5824 wpa_printf(MSG_DEBUG,
5825 "P2P: forced freq (%d MHz) is also shared",
5826 freq);
5827 params->freq = freq;
5828 goto success;
5829 }
5830 }
5831
5832 if (!ignore_no_freqs && !unused_channels) {
5833 wpa_printf(MSG_DEBUG,
5834 "P2P: Cannot force GO on freq (%d MHz) as all the channels are in use",
5835 freq);
5836 goto fail;
5837 }
5838
5839 wpa_printf(MSG_DEBUG,
5840 "P2P: force GO freq (%d MHz) on a free channel",
5841 freq);
5842 params->freq = freq;
5843 goto success;
5844 }
5845
5846 /* consider using one of the shared frequencies */
5847 if (num &&
5848 (!wpa_s->conf->p2p_ignore_shared_freq || !unused_channels)) {
5849 cand = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5850 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5851 wpa_printf(MSG_DEBUG,
5852 "P2P: Use shared freq (%d MHz) for GO",
5853 cand);
5854 params->freq = cand;
5855 goto success;
5856 }
5857
5858 /* try using one of the shared freqs */
5859 for (i = 0; i < num; i++) {
5860 if (wpas_p2p_supported_freq_go(wpa_s, channels,
5861 freqs[i].freq)) {
5862 wpa_printf(MSG_DEBUG,
5863 "P2P: Use shared freq (%d MHz) for GO",
5864 freqs[i].freq);
5865 params->freq = freqs[i].freq;
5866 goto success;
5867 }
5868 }
5869 }
5870
5871 if (!ignore_no_freqs && !unused_channels) {
5872 wpa_printf(MSG_DEBUG,
5873 "P2P: Cannot force GO on any of the channels we are already using");
5874 goto fail;
5875 }
5876
5877 /* try using the setting from the configuration file */
5878 if (wpa_s->conf->p2p_oper_reg_class == 81 &&
5879 wpa_s->conf->p2p_oper_channel >= 1 &&
5880 wpa_s->conf->p2p_oper_channel <= 11 &&
5881 wpas_p2p_supported_freq_go(
5882 wpa_s, channels,
5883 2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
5884 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
5885 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5886 "frequency %d MHz", params->freq);
5887 goto success;
5888 }
5889
5890 if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
5891 wpa_s->conf->p2p_oper_reg_class == 116 ||
5892 wpa_s->conf->p2p_oper_reg_class == 117 ||
5893 wpa_s->conf->p2p_oper_reg_class == 124 ||
5894 wpa_s->conf->p2p_oper_reg_class == 125 ||
5895 wpa_s->conf->p2p_oper_reg_class == 126 ||
5896 wpa_s->conf->p2p_oper_reg_class == 127) &&
5897 wpas_p2p_supported_freq_go(wpa_s, channels,
5898 5000 +
5899 5 * wpa_s->conf->p2p_oper_channel)) {
5900 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
5901 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5902 "frequency %d MHz", params->freq);
5903 goto success;
5904 }
5905
5906 /* Try using best channels */
5907 if (wpa_s->conf->p2p_oper_channel == 0 &&
5908 wpa_s->best_overall_freq > 0 &&
5909 wpas_p2p_supported_freq_go(wpa_s, channels,
5910 wpa_s->best_overall_freq)) {
5911 params->freq = wpa_s->best_overall_freq;
5912 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5913 "channel %d MHz", params->freq);
5914 goto success;
5915 }
5916
5917 if (wpa_s->conf->p2p_oper_channel == 0 &&
5918 wpa_s->best_24_freq > 0 &&
5919 wpas_p2p_supported_freq_go(wpa_s, channels,
5920 wpa_s->best_24_freq)) {
5921 params->freq = wpa_s->best_24_freq;
5922 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
5923 "channel %d MHz", params->freq);
5924 goto success;
5925 }
5926
5927 if (wpa_s->conf->p2p_oper_channel == 0 &&
5928 wpa_s->best_5_freq > 0 &&
5929 wpas_p2p_supported_freq_go(wpa_s, channels,
5930 wpa_s->best_5_freq)) {
5931 params->freq = wpa_s->best_5_freq;
5932 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
5933 "channel %d MHz", params->freq);
5934 goto success;
5935 }
5936
5937 /* try using preferred channels */
5938 cand = p2p_get_pref_freq(wpa_s->global->p2p, channels);
5939 if (cand && wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5940 params->freq = cand;
5941 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
5942 "channels", params->freq);
5943 goto success;
5944 }
5945
5946 /* Try using one of the group common freqs */
5947 if (wpa_s->p2p_group_common_freqs) {
5948 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
5949 cand = wpa_s->p2p_group_common_freqs[i];
5950 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5951 params->freq = cand;
5952 wpa_printf(MSG_DEBUG,
5953 "P2P: Use freq %d MHz common with the peer",
5954 params->freq);
5955 goto success;
5956 }
5957 }
5958 }
5959
5960 /* no preference, select some channel */
5961 wpas_p2p_select_go_freq_no_pref(wpa_s, params, channels);
5962
5963 if (params->freq == 0) {
5964 wpa_printf(MSG_DEBUG, "P2P: did not find a freq for GO use");
5965 goto fail;
5966 }
5967
5968 success:
5969 os_free(freqs);
5970 return 0;
5971 fail:
5972 os_free(freqs);
5973 return -1;
5974 }
5975
5976
5977 static struct wpa_supplicant *
5978 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5979 int go)
5980 {
5981 struct wpa_supplicant *group_wpa_s;
5982
5983 if (!wpas_p2p_create_iface(wpa_s)) {
5984 if (wpa_s->p2p_mgmt) {
5985 /*
5986 * We may be called on the p2p_dev interface which
5987 * cannot be used for group operations, so always use
5988 * the primary interface.
5989 */
5990 wpa_s->parent->p2pdev = wpa_s;
5991 wpa_s = wpa_s->parent;
5992 }
5993 wpa_dbg(wpa_s, MSG_DEBUG,
5994 "P2P: Use primary interface for group operations");
5995 wpa_s->p2p_first_connection_timeout = 0;
5996 if (wpa_s != wpa_s->p2pdev)
5997 wpas_p2p_clone_config_dh(wpa_s, wpa_s->p2pdev);
5998 return wpa_s;
5999 }
6000
6001 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
6002 WPA_IF_P2P_CLIENT) < 0) {
6003 wpa_msg_global(wpa_s, MSG_ERROR,
6004 "P2P: Failed to add group interface");
6005 return NULL;
6006 }
6007 group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
6008 if (group_wpa_s == NULL) {
6009 wpa_msg_global(wpa_s, MSG_ERROR,
6010 "P2P: Failed to initialize group interface");
6011 wpas_p2p_remove_pending_group_interface(wpa_s);
6012 return NULL;
6013 }
6014
6015 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
6016 group_wpa_s->ifname);
6017 group_wpa_s->p2p_first_connection_timeout = 0;
6018 return group_wpa_s;
6019 }
6020
6021
6022 /**
6023 * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
6024 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
6025 * @persistent_group: Whether to create a persistent group
6026 * @freq: Frequency for the group or 0 to indicate no hardcoding
6027 * @vht_center_freq2: segment_1 center frequency for GO operating in VHT 80P80
6028 * @ht40: Start GO with 40 MHz channel width
6029 * @vht: Start GO with VHT support
6030 * @vht_chwidth: channel bandwidth for GO operating with VHT support
6031 * Returns: 0 on success, -1 on failure
6032 *
6033 * This function creates a new P2P group with the local end as the Group Owner,
6034 * i.e., without using Group Owner Negotiation.
6035 */
6036 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
6037 int freq, int vht_center_freq2, int ht40, int vht,
6038 int max_oper_chwidth)
6039 {
6040 struct p2p_go_neg_results params;
6041
6042 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6043 return -1;
6044
6045 os_free(wpa_s->global->add_psk);
6046 wpa_s->global->add_psk = NULL;
6047
6048 /* Make sure we are not running find during connection establishment */
6049 wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
6050 wpas_p2p_stop_find_oper(wpa_s);
6051
6052 freq = wpas_p2p_select_go_freq(wpa_s, freq);
6053 if (freq < 0)
6054 return -1;
6055
6056 if (wpas_p2p_init_go_params(wpa_s, &params, freq, vht_center_freq2,
6057 ht40, vht, max_oper_chwidth, NULL))
6058 return -1;
6059 if (params.freq &&
6060 !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
6061 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
6062 ieee80211_is_dfs(params.freq)) {
6063 /*
6064 * If freq is a DFS channel and DFS is offloaded to the
6065 * driver, allow P2P GO to use it.
6066 */
6067 wpa_printf(MSG_DEBUG,
6068 "P2P: %s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to driver",
6069 __func__, params.freq);
6070 } else {
6071 wpa_printf(MSG_DEBUG,
6072 "P2P: The selected channel for GO (%u MHz) is not supported for P2P uses",
6073 params.freq);
6074 return -1;
6075 }
6076 }
6077 p2p_go_params(wpa_s->global->p2p, &params);
6078 params.persistent_group = persistent_group;
6079
6080 wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
6081 if (wpa_s == NULL)
6082 return -1;
6083 wpas_start_wps_go(wpa_s, &params, 0);
6084
6085 return 0;
6086 }
6087
6088
6089 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
6090 struct wpa_ssid *params, int addr_allocated,
6091 int freq, int force_scan)
6092 {
6093 struct wpa_ssid *ssid;
6094
6095 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
6096 if (wpa_s == NULL)
6097 return -1;
6098 if (force_scan)
6099 os_get_reltime(&wpa_s->scan_min_time);
6100 wpa_s->p2p_last_4way_hs_fail = NULL;
6101
6102 wpa_supplicant_ap_deinit(wpa_s);
6103
6104 ssid = wpa_config_add_network(wpa_s->conf);
6105 if (ssid == NULL)
6106 return -1;
6107 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
6108 wpa_config_set_network_defaults(ssid);
6109 ssid->temporary = 1;
6110 ssid->proto = WPA_PROTO_RSN;
6111 ssid->pbss = params->pbss;
6112 ssid->pairwise_cipher = params->pbss ? WPA_CIPHER_GCMP :
6113 WPA_CIPHER_CCMP;
6114 ssid->group_cipher = params->pbss ? WPA_CIPHER_GCMP : WPA_CIPHER_CCMP;
6115 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
6116 ssid->ssid = os_malloc(params->ssid_len);
6117 if (ssid->ssid == NULL) {
6118 wpa_config_remove_network(wpa_s->conf, ssid->id);
6119 return -1;
6120 }
6121 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
6122 ssid->ssid_len = params->ssid_len;
6123 ssid->p2p_group = 1;
6124 ssid->export_keys = 1;
6125 if (params->psk_set) {
6126 os_memcpy(ssid->psk, params->psk, 32);
6127 ssid->psk_set = 1;
6128 }
6129 if (params->passphrase)
6130 ssid->passphrase = os_strdup(params->passphrase);
6131
6132 wpa_s->show_group_started = 1;
6133 wpa_s->p2p_in_invitation = 1;
6134 wpa_s->p2p_invite_go_freq = freq;
6135 wpa_s->p2p_go_group_formation_completed = 0;
6136 wpa_s->global->p2p_group_formation = wpa_s;
6137
6138 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->p2pdev,
6139 NULL);
6140 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6141 wpas_p2p_group_formation_timeout,
6142 wpa_s->p2pdev, NULL);
6143 wpa_supplicant_select_network(wpa_s, ssid);
6144
6145 return 0;
6146 }
6147
6148
6149 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
6150 struct wpa_ssid *ssid, int addr_allocated,
6151 int force_freq, int neg_freq,
6152 int vht_center_freq2, int ht40,
6153 int vht, int max_oper_chwidth,
6154 const struct p2p_channels *channels,
6155 int connection_timeout, int force_scan)
6156 {
6157 struct p2p_go_neg_results params;
6158 int go = 0, freq;
6159
6160 if (ssid->disabled != 2 || ssid->ssid == NULL)
6161 return -1;
6162
6163 if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
6164 go == (ssid->mode == WPAS_MODE_P2P_GO)) {
6165 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
6166 "already running");
6167 if (go == 0 &&
6168 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6169 wpa_s->p2pdev, NULL)) {
6170 /*
6171 * This can happen if Invitation Response frame was lost
6172 * and the peer (GO of a persistent group) tries to
6173 * invite us again. Reschedule the timeout to avoid
6174 * terminating the wait for the connection too early
6175 * since we now know that the peer is still trying to
6176 * invite us instead of having already started the GO.
6177 */
6178 wpa_printf(MSG_DEBUG,
6179 "P2P: Reschedule group formation timeout since peer is still trying to invite us");
6180 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6181 wpas_p2p_group_formation_timeout,
6182 wpa_s->p2pdev, NULL);
6183 }
6184 return 0;
6185 }
6186
6187 os_free(wpa_s->global->add_psk);
6188 wpa_s->global->add_psk = NULL;
6189
6190 /* Make sure we are not running find during connection establishment */
6191 wpas_p2p_stop_find_oper(wpa_s);
6192
6193 wpa_s->p2p_fallback_to_go_neg = 0;
6194
6195 if (ssid->mode == WPAS_MODE_P2P_GO) {
6196 if (force_freq > 0) {
6197 freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
6198 if (freq < 0)
6199 return -1;
6200 } else {
6201 freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
6202 if (freq < 0 ||
6203 (freq > 0 && !freq_included(wpa_s, channels, freq)))
6204 freq = 0;
6205 }
6206 } else if (ssid->mode == WPAS_MODE_INFRA) {
6207 freq = neg_freq;
6208 if (freq <= 0 || !freq_included(wpa_s, channels, freq)) {
6209 struct os_reltime now;
6210 struct wpa_bss *bss =
6211 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid);
6212
6213 os_get_reltime(&now);
6214 if (bss &&
6215 !os_reltime_expired(&now, &bss->last_update, 5) &&
6216 freq_included(wpa_s, channels, bss->freq))
6217 freq = bss->freq;
6218 else
6219 freq = 0;
6220 }
6221
6222 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq,
6223 force_scan);
6224 } else {
6225 return -1;
6226 }
6227
6228 if (wpas_p2p_init_go_params(wpa_s, &params, freq, vht_center_freq2,
6229 ht40, vht, max_oper_chwidth, channels))
6230 return -1;
6231
6232 params.role_go = 1;
6233 params.psk_set = ssid->psk_set;
6234 if (params.psk_set)
6235 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
6236 if (ssid->passphrase) {
6237 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
6238 wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
6239 "persistent group");
6240 return -1;
6241 }
6242 os_strlcpy(params.passphrase, ssid->passphrase,
6243 sizeof(params.passphrase));
6244 }
6245 os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
6246 params.ssid_len = ssid->ssid_len;
6247 params.persistent_group = 1;
6248
6249 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
6250 if (wpa_s == NULL)
6251 return -1;
6252
6253 p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS);
6254
6255 wpa_s->p2p_first_connection_timeout = connection_timeout;
6256 wpas_start_wps_go(wpa_s, &params, 0);
6257
6258 return 0;
6259 }
6260
6261
6262 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
6263 struct wpabuf *proberesp_ies)
6264 {
6265 struct wpa_supplicant *wpa_s = ctx;
6266 if (wpa_s->ap_iface) {
6267 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
6268 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
6269 wpabuf_free(beacon_ies);
6270 wpabuf_free(proberesp_ies);
6271 return;
6272 }
6273 if (beacon_ies) {
6274 wpabuf_free(hapd->p2p_beacon_ie);
6275 hapd->p2p_beacon_ie = beacon_ies;
6276 }
6277 wpabuf_free(hapd->p2p_probe_resp_ie);
6278 hapd->p2p_probe_resp_ie = proberesp_ies;
6279 } else {
6280 wpabuf_free(beacon_ies);
6281 wpabuf_free(proberesp_ies);
6282 }
6283 wpa_supplicant_ap_update_beacon(wpa_s);
6284 }
6285
6286
6287 static void wpas_p2p_idle_update(void *ctx, int idle)
6288 {
6289 struct wpa_supplicant *wpa_s = ctx;
6290 if (!wpa_s->ap_iface)
6291 return;
6292 wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
6293 if (idle) {
6294 if (wpa_s->global->p2p_fail_on_wps_complete &&
6295 wpa_s->p2p_in_provisioning) {
6296 wpas_p2p_grpform_fail_after_wps(wpa_s);
6297 return;
6298 }
6299 wpas_p2p_set_group_idle_timeout(wpa_s);
6300 } else
6301 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
6302 }
6303
6304
6305 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
6306 struct wpa_ssid *ssid)
6307 {
6308 struct p2p_group *group;
6309 struct p2p_group_config *cfg;
6310
6311 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6312 return NULL;
6313
6314 cfg = os_zalloc(sizeof(*cfg));
6315 if (cfg == NULL)
6316 return NULL;
6317
6318 if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
6319 cfg->persistent_group = 2;
6320 else if (ssid->p2p_persistent_group)
6321 cfg->persistent_group = 1;
6322 os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
6323 if (wpa_s->max_stations &&
6324 wpa_s->max_stations < wpa_s->conf->max_num_sta)
6325 cfg->max_clients = wpa_s->max_stations;
6326 else
6327 cfg->max_clients = wpa_s->conf->max_num_sta;
6328 os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
6329 cfg->ssid_len = ssid->ssid_len;
6330 cfg->freq = ssid->frequency;
6331 cfg->cb_ctx = wpa_s;
6332 cfg->ie_update = wpas_p2p_ie_update;
6333 cfg->idle_update = wpas_p2p_idle_update;
6334 cfg->ip_addr_alloc = WPA_GET_BE32(wpa_s->p2pdev->conf->ip_addr_start)
6335 != 0;
6336
6337 group = p2p_group_init(wpa_s->global->p2p, cfg);
6338 if (group == NULL)
6339 os_free(cfg);
6340 if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
6341 p2p_group_notif_formation_done(group);
6342 wpa_s->p2p_group = group;
6343 return group;
6344 }
6345
6346
6347 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6348 int registrar)
6349 {
6350 struct wpa_ssid *ssid = wpa_s->current_ssid;
6351
6352 if (!wpa_s->p2p_in_provisioning) {
6353 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
6354 "provisioning not in progress");
6355 return;
6356 }
6357
6358 if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6359 u8 go_dev_addr[ETH_ALEN];
6360 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
6361 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6362 ssid->ssid_len);
6363 /* Clear any stored provisioning info */
6364 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
6365 }
6366
6367 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->p2pdev,
6368 NULL);
6369 wpa_s->p2p_go_group_formation_completed = 1;
6370 if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6371 /*
6372 * Use a separate timeout for initial data connection to
6373 * complete to allow the group to be removed automatically if
6374 * something goes wrong in this step before the P2P group idle
6375 * timeout mechanism is taken into use.
6376 */
6377 wpa_dbg(wpa_s, MSG_DEBUG,
6378 "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
6379 P2P_MAX_INITIAL_CONN_WAIT);
6380 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6381 wpas_p2p_group_formation_timeout,
6382 wpa_s->p2pdev, NULL);
6383 /* Complete group formation on successful data connection. */
6384 wpa_s->p2p_go_group_formation_completed = 0;
6385 } else if (ssid) {
6386 /*
6387 * Use a separate timeout for initial data connection to
6388 * complete to allow the group to be removed automatically if
6389 * the client does not complete data connection successfully.
6390 */
6391 wpa_dbg(wpa_s, MSG_DEBUG,
6392 "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
6393 P2P_MAX_INITIAL_CONN_WAIT_GO);
6394 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
6395 wpas_p2p_group_formation_timeout,
6396 wpa_s->p2pdev, NULL);
6397 /*
6398 * Complete group formation on first successful data connection
6399 */
6400 wpa_s->p2p_go_group_formation_completed = 0;
6401 }
6402 if (wpa_s->global->p2p)
6403 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
6404 wpas_group_formation_completed(wpa_s, 1, 0);
6405 }
6406
6407
6408 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
6409 struct wps_event_fail *fail)
6410 {
6411 if (!wpa_s->p2p_in_provisioning) {
6412 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
6413 "provisioning not in progress");
6414 return;
6415 }
6416
6417 if (wpa_s->go_params) {
6418 p2p_clear_provisioning_info(
6419 wpa_s->global->p2p,
6420 wpa_s->go_params->peer_device_addr);
6421 }
6422
6423 wpas_notify_p2p_wps_failed(wpa_s, fail);
6424
6425 if (wpa_s == wpa_s->global->p2p_group_formation) {
6426 /*
6427 * Allow some time for the failed WPS negotiation exchange to
6428 * complete, but remove the group since group formation cannot
6429 * succeed after provisioning failure.
6430 */
6431 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
6432 wpa_s->global->p2p_fail_on_wps_complete = 1;
6433 eloop_deplete_timeout(0, 50000,
6434 wpas_p2p_group_formation_timeout,
6435 wpa_s->p2pdev, NULL);
6436 }
6437 }
6438
6439
6440 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
6441 {
6442 if (!wpa_s->global->p2p_fail_on_wps_complete ||
6443 !wpa_s->p2p_in_provisioning)
6444 return 0;
6445
6446 wpas_p2p_grpform_fail_after_wps(wpa_s);
6447
6448 return 1;
6449 }
6450
6451
6452 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6453 const char *config_method,
6454 enum wpas_p2p_prov_disc_use use,
6455 struct p2ps_provision *p2ps_prov)
6456 {
6457 u16 config_methods;
6458
6459 wpa_s->global->pending_p2ps_group = 0;
6460 wpa_s->global->pending_p2ps_group_freq = 0;
6461 wpa_s->p2p_fallback_to_go_neg = 0;
6462 wpa_s->pending_pd_use = NORMAL_PD;
6463 if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) {
6464 p2ps_prov->conncap = p2ps_group_capability(
6465 wpa_s, P2PS_SETUP_NONE, p2ps_prov->role,
6466 &p2ps_prov->force_freq, &p2ps_prov->pref_freq);
6467
6468 wpa_printf(MSG_DEBUG,
6469 "P2P: %s conncap: %d - ASP parsed: %x %x %d %s",
6470 __func__, p2ps_prov->conncap,
6471 p2ps_prov->adv_id, p2ps_prov->conncap,
6472 p2ps_prov->status, p2ps_prov->info);
6473
6474 config_methods = 0;
6475 } else if (os_strncmp(config_method, "display", 7) == 0)
6476 config_methods = WPS_CONFIG_DISPLAY;
6477 else if (os_strncmp(config_method, "keypad", 6) == 0)
6478 config_methods = WPS_CONFIG_KEYPAD;
6479 else if (os_strncmp(config_method, "pbc", 3) == 0 ||
6480 os_strncmp(config_method, "pushbutton", 10) == 0)
6481 config_methods = WPS_CONFIG_PUSHBUTTON;
6482 else {
6483 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
6484 os_free(p2ps_prov);
6485 return -1;
6486 }
6487
6488 if (use == WPAS_P2P_PD_AUTO) {
6489 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
6490 wpa_s->pending_pd_config_methods = config_methods;
6491 wpa_s->p2p_auto_pd = 1;
6492 wpa_s->p2p_auto_join = 0;
6493 wpa_s->pending_pd_before_join = 0;
6494 wpa_s->auto_pd_scan_retry = 0;
6495 wpas_p2p_stop_find(wpa_s);
6496 wpa_s->p2p_join_scan_count = 0;
6497 os_get_reltime(&wpa_s->p2p_auto_started);
6498 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
6499 wpa_s->p2p_auto_started.sec,
6500 wpa_s->p2p_auto_started.usec);
6501 wpas_p2p_join_scan(wpa_s, NULL);
6502 return 0;
6503 }
6504
6505 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) {
6506 os_free(p2ps_prov);
6507 return -1;
6508 }
6509
6510 return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov,
6511 config_methods, use == WPAS_P2P_PD_FOR_JOIN,
6512 0, 1);
6513 }
6514
6515
6516 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
6517 char *end)
6518 {
6519 return p2p_scan_result_text(ies, ies_len, buf, end);
6520 }
6521
6522
6523 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
6524 {
6525 if (!offchannel_pending_action_tx(wpa_s))
6526 return;
6527
6528 if (wpa_s->p2p_send_action_work) {
6529 wpas_p2p_free_send_action_work(wpa_s);
6530 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
6531 wpa_s, NULL);
6532 offchannel_send_action_done(wpa_s);
6533 }
6534
6535 wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
6536 "operation request");
6537 offchannel_clear_pending_action_tx(wpa_s);
6538 }
6539
6540
6541 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
6542 enum p2p_discovery_type type,
6543 unsigned int num_req_dev_types, const u8 *req_dev_types,
6544 const u8 *dev_id, unsigned int search_delay,
6545 u8 seek_cnt, const char **seek_string, int freq)
6546 {
6547 wpas_p2p_clear_pending_action_tx(wpa_s);
6548 wpa_s->p2p_long_listen = 0;
6549
6550 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
6551 wpa_s->p2p_in_provisioning)
6552 return -1;
6553
6554 wpa_supplicant_cancel_sched_scan(wpa_s);
6555
6556 return p2p_find(wpa_s->global->p2p, timeout, type,
6557 num_req_dev_types, req_dev_types, dev_id,
6558 search_delay, seek_cnt, seek_string, freq);
6559 }
6560
6561
6562 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
6563 struct wpa_scan_results *scan_res)
6564 {
6565 wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6566
6567 if (wpa_s->p2p_scan_work) {
6568 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
6569 wpa_s->p2p_scan_work = NULL;
6570 radio_work_done(work);
6571 }
6572
6573 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6574 return;
6575
6576 /*
6577 * Indicate that results have been processed so that the P2P module can
6578 * continue pending tasks.
6579 */
6580 p2p_scan_res_handled(wpa_s->global->p2p);
6581 }
6582
6583
6584 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
6585 {
6586 wpas_p2p_clear_pending_action_tx(wpa_s);
6587 wpa_s->p2p_long_listen = 0;
6588 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6589 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
6590
6591 if (wpa_s->global->p2p)
6592 p2p_stop_find(wpa_s->global->p2p);
6593
6594 if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
6595 wpa_printf(MSG_DEBUG,
6596 "P2P: Do not consider the scan results after stop_find");
6597 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
6598 }
6599 }
6600
6601
6602 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
6603 {
6604 wpas_p2p_stop_find_oper(wpa_s);
6605 if (!wpa_s->global->pending_group_iface_for_p2ps)
6606 wpas_p2p_remove_pending_group_interface(wpa_s);
6607 }
6608
6609
6610 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
6611 {
6612 struct wpa_supplicant *wpa_s = eloop_ctx;
6613 wpa_s->p2p_long_listen = 0;
6614 }
6615
6616
6617 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
6618 {
6619 int res;
6620
6621 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6622 return -1;
6623
6624 wpa_supplicant_cancel_sched_scan(wpa_s);
6625 wpas_p2p_clear_pending_action_tx(wpa_s);
6626
6627 if (timeout == 0) {
6628 /*
6629 * This is a request for unlimited Listen state. However, at
6630 * least for now, this is mapped to a Listen state for one
6631 * hour.
6632 */
6633 timeout = 3600;
6634 }
6635 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6636 wpa_s->p2p_long_listen = 0;
6637
6638 /*
6639 * Stop previous find/listen operation to avoid trying to request a new
6640 * remain-on-channel operation while the driver is still running the
6641 * previous one.
6642 */
6643 if (wpa_s->global->p2p)
6644 p2p_stop_find(wpa_s->global->p2p);
6645
6646 res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
6647 if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
6648 wpa_s->p2p_long_listen = timeout * 1000;
6649 eloop_register_timeout(timeout, 0,
6650 wpas_p2p_long_listen_timeout,
6651 wpa_s, NULL);
6652 }
6653
6654 return res;
6655 }
6656
6657
6658 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
6659 u8 *buf, size_t len, int p2p_group)
6660 {
6661 struct wpabuf *p2p_ie;
6662 int ret;
6663
6664 if (wpa_s->global->p2p_disabled)
6665 return -1;
6666 /*
6667 * Advertize mandatory cross connection capability even on
6668 * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP.
6669 */
6670 if (wpa_s->conf->p2p_disabled && p2p_group)
6671 return -1;
6672 if (wpa_s->global->p2p == NULL)
6673 return -1;
6674 if (bss == NULL)
6675 return -1;
6676
6677 p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
6678 ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
6679 p2p_group, p2p_ie);
6680 wpabuf_free(p2p_ie);
6681
6682 return ret;
6683 }
6684
6685
6686 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
6687 const u8 *dst, const u8 *bssid,
6688 const u8 *ie, size_t ie_len,
6689 unsigned int rx_freq, int ssi_signal)
6690 {
6691 if (wpa_s->global->p2p_disabled)
6692 return 0;
6693 if (wpa_s->global->p2p == NULL)
6694 return 0;
6695
6696 switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
6697 ie, ie_len, rx_freq)) {
6698 case P2P_PREQ_NOT_P2P:
6699 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
6700 ssi_signal);
6701 /* fall through */
6702 case P2P_PREQ_MALFORMED:
6703 case P2P_PREQ_NOT_LISTEN:
6704 case P2P_PREQ_NOT_PROCESSED:
6705 default: /* make gcc happy */
6706 return 0;
6707 case P2P_PREQ_PROCESSED:
6708 return 1;
6709 }
6710 }
6711
6712
6713 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
6714 const u8 *sa, const u8 *bssid,
6715 u8 category, const u8 *data, size_t len, int freq)
6716 {
6717 if (wpa_s->global->p2p_disabled)
6718 return;
6719 if (wpa_s->global->p2p == NULL)
6720 return;
6721
6722 p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
6723 freq);
6724 }
6725
6726
6727 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
6728 {
6729 unsigned int bands;
6730
6731 if (wpa_s->global->p2p_disabled)
6732 return;
6733 if (wpa_s->global->p2p == NULL)
6734 return;
6735
6736 bands = wpas_get_bands(wpa_s, NULL);
6737 p2p_scan_ie(wpa_s->global->p2p, ies, NULL, bands);
6738 }
6739
6740
6741 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
6742 {
6743 p2p_group_deinit(wpa_s->p2p_group);
6744 wpa_s->p2p_group = NULL;
6745
6746 wpa_s->ap_configured_cb = NULL;
6747 wpa_s->ap_configured_cb_ctx = NULL;
6748 wpa_s->ap_configured_cb_data = NULL;
6749 wpa_s->connect_without_scan = NULL;
6750 }
6751
6752
6753 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
6754 {
6755 wpa_s->p2p_long_listen = 0;
6756
6757 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6758 return -1;
6759
6760 return p2p_reject(wpa_s->global->p2p, addr);
6761 }
6762
6763
6764 /* Invite to reinvoke a persistent group */
6765 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6766 struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
6767 int vht_center_freq2, int ht40, int vht, int max_chwidth,
6768 int pref_freq)
6769 {
6770 enum p2p_invite_role role;
6771 u8 *bssid = NULL;
6772 int force_freq = 0;
6773 int res;
6774 int no_pref_freq_given = pref_freq == 0;
6775 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6776
6777 wpa_s->global->p2p_invite_group = NULL;
6778 if (peer_addr)
6779 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
6780 else
6781 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
6782
6783 wpa_s->p2p_persistent_go_freq = freq;
6784 wpa_s->p2p_go_ht40 = !!ht40;
6785 wpa_s->p2p_go_vht = !!vht;
6786 wpa_s->p2p_go_max_oper_chwidth = max_chwidth;
6787 wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
6788 if (ssid->mode == WPAS_MODE_P2P_GO) {
6789 role = P2P_INVITE_ROLE_GO;
6790 if (peer_addr == NULL) {
6791 wpa_printf(MSG_DEBUG, "P2P: Missing peer "
6792 "address in invitation command");
6793 return -1;
6794 }
6795 if (wpas_p2p_create_iface(wpa_s)) {
6796 if (wpas_p2p_add_group_interface(wpa_s,
6797 WPA_IF_P2P_GO) < 0) {
6798 wpa_printf(MSG_ERROR, "P2P: Failed to "
6799 "allocate a new interface for the "
6800 "group");
6801 return -1;
6802 }
6803 bssid = wpa_s->pending_interface_addr;
6804 } else if (wpa_s->p2p_mgmt)
6805 bssid = wpa_s->parent->own_addr;
6806 else
6807 bssid = wpa_s->own_addr;
6808 } else {
6809 role = P2P_INVITE_ROLE_CLIENT;
6810 peer_addr = ssid->bssid;
6811 }
6812 wpa_s->pending_invite_ssid_id = ssid->id;
6813
6814 size = P2P_MAX_PREF_CHANNELS;
6815 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6816 role == P2P_INVITE_ROLE_GO,
6817 pref_freq_list, &size);
6818 if (res)
6819 return res;
6820
6821 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6822 return -1;
6823
6824 p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
6825
6826 if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
6827 no_pref_freq_given && pref_freq > 0 &&
6828 wpa_s->num_multichan_concurrent > 1 &&
6829 wpas_p2p_num_unused_channels(wpa_s) > 0) {
6830 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
6831 pref_freq);
6832 pref_freq = 0;
6833 }
6834
6835 /*
6836 * Stop any find/listen operations before invitation and possibly
6837 * connection establishment.
6838 */
6839 wpas_p2p_stop_find_oper(wpa_s);
6840
6841 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6842 ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
6843 1, pref_freq, -1);
6844 }
6845
6846
6847 /* Invite to join an active group */
6848 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
6849 const u8 *peer_addr, const u8 *go_dev_addr)
6850 {
6851 struct wpa_global *global = wpa_s->global;
6852 enum p2p_invite_role role;
6853 u8 *bssid = NULL;
6854 struct wpa_ssid *ssid;
6855 int persistent;
6856 int freq = 0, force_freq = 0, pref_freq = 0;
6857 int res;
6858 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6859
6860 wpa_s->p2p_persistent_go_freq = 0;
6861 wpa_s->p2p_go_ht40 = 0;
6862 wpa_s->p2p_go_vht = 0;
6863 wpa_s->p2p_go_vht_center_freq2 = 0;
6864 wpa_s->p2p_go_max_oper_chwidth = 0;
6865
6866 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6867 if (os_strcmp(wpa_s->ifname, ifname) == 0)
6868 break;
6869 }
6870 if (wpa_s == NULL) {
6871 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
6872 return -1;
6873 }
6874
6875 ssid = wpa_s->current_ssid;
6876 if (ssid == NULL) {
6877 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
6878 "invitation");
6879 return -1;
6880 }
6881
6882 wpa_s->global->p2p_invite_group = wpa_s;
6883 persistent = ssid->p2p_persistent_group &&
6884 wpas_p2p_get_persistent(wpa_s->p2pdev, peer_addr,
6885 ssid->ssid, ssid->ssid_len);
6886
6887 if (ssid->mode == WPAS_MODE_P2P_GO) {
6888 role = P2P_INVITE_ROLE_ACTIVE_GO;
6889 bssid = wpa_s->own_addr;
6890 if (go_dev_addr == NULL)
6891 go_dev_addr = wpa_s->global->p2p_dev_addr;
6892 freq = ssid->frequency;
6893 } else {
6894 role = P2P_INVITE_ROLE_CLIENT;
6895 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
6896 wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
6897 "invite to current group");
6898 return -1;
6899 }
6900 bssid = wpa_s->bssid;
6901 if (go_dev_addr == NULL &&
6902 !is_zero_ether_addr(wpa_s->go_dev_addr))
6903 go_dev_addr = wpa_s->go_dev_addr;
6904 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6905 (int) wpa_s->assoc_freq;
6906 }
6907 wpa_s->p2pdev->pending_invite_ssid_id = -1;
6908
6909 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6910 return -1;
6911
6912 size = P2P_MAX_PREF_CHANNELS;
6913 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6914 role == P2P_INVITE_ROLE_ACTIVE_GO,
6915 pref_freq_list, &size);
6916 if (res)
6917 return res;
6918 wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
6919
6920 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6921 ssid->ssid, ssid->ssid_len, force_freq,
6922 go_dev_addr, persistent, pref_freq, -1);
6923 }
6924
6925
6926 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
6927 {
6928 struct wpa_ssid *ssid = wpa_s->current_ssid;
6929 u8 go_dev_addr[ETH_ALEN];
6930 int network_id = -1;
6931 int persistent;
6932 int freq;
6933 u8 ip[3 * 4];
6934 char ip_addr[100];
6935
6936 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
6937 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6938 wpa_s->p2pdev, NULL);
6939 }
6940
6941 if (!wpa_s->show_group_started || !ssid)
6942 return;
6943
6944 wpa_s->show_group_started = 0;
6945 if (!wpa_s->p2p_go_group_formation_completed &&
6946 wpa_s->global->p2p_group_formation == wpa_s) {
6947 wpa_dbg(wpa_s, MSG_DEBUG,
6948 "P2P: Marking group formation completed on client on data connection");
6949 wpa_s->p2p_go_group_formation_completed = 1;
6950 wpa_s->global->p2p_group_formation = NULL;
6951 wpa_s->p2p_in_provisioning = 0;
6952 wpa_s->p2p_in_invitation = 0;
6953 }
6954
6955 os_memset(go_dev_addr, 0, ETH_ALEN);
6956 if (ssid->bssid_set)
6957 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
6958 persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6959 ssid->ssid_len);
6960 os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
6961
6962 if (wpa_s->global->p2p_group_formation == wpa_s)
6963 wpa_s->global->p2p_group_formation = NULL;
6964
6965 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6966 (int) wpa_s->assoc_freq;
6967
6968 ip_addr[0] = '\0';
6969 if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
6970 int res;
6971
6972 res = os_snprintf(ip_addr, sizeof(ip_addr),
6973 " ip_addr=%u.%u.%u.%u "
6974 "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
6975 ip[0], ip[1], ip[2], ip[3],
6976 ip[4], ip[5], ip[6], ip[7],
6977 ip[8], ip[9], ip[10], ip[11]);
6978 if (os_snprintf_error(sizeof(ip_addr), res))
6979 ip_addr[0] = '\0';
6980 }
6981
6982 wpas_p2p_group_started(wpa_s, 0, ssid, freq,
6983 ssid->passphrase == NULL && ssid->psk_set ?
6984 ssid->psk : NULL,
6985 ssid->passphrase, go_dev_addr, persistent,
6986 ip_addr);
6987
6988 if (persistent)
6989 network_id = wpas_p2p_store_persistent_group(wpa_s->p2pdev,
6990 ssid, go_dev_addr);
6991 if (network_id < 0)
6992 network_id = ssid->id;
6993 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
6994 }
6995
6996
6997 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
6998 u32 interval1, u32 duration2, u32 interval2)
6999 {
7000 int ret;
7001
7002 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7003 return -1;
7004
7005 if (wpa_s->wpa_state < WPA_ASSOCIATED ||
7006 wpa_s->current_ssid == NULL ||
7007 wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
7008 return -1;
7009
7010 ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
7011 wpa_s->own_addr, wpa_s->assoc_freq,
7012 duration1, interval1, duration2, interval2);
7013 if (ret == 0)
7014 wpa_s->waiting_presence_resp = 1;
7015
7016 return ret;
7017 }
7018
7019
7020 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
7021 unsigned int interval)
7022 {
7023 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7024 return -1;
7025
7026 return p2p_ext_listen(wpa_s->global->p2p, period, interval);
7027 }
7028
7029
7030 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
7031 {
7032 if (wpa_s->current_ssid == NULL) {
7033 /*
7034 * current_ssid can be cleared when P2P client interface gets
7035 * disconnected, so assume this interface was used as P2P
7036 * client.
7037 */
7038 return 1;
7039 }
7040 return wpa_s->current_ssid->p2p_group &&
7041 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
7042 }
7043
7044
7045 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
7046 {
7047 struct wpa_supplicant *wpa_s = eloop_ctx;
7048
7049 if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
7050 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
7051 "disabled");
7052 return;
7053 }
7054
7055 wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
7056 "group");
7057 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
7058 }
7059
7060
7061 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
7062 {
7063 int timeout;
7064
7065 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7066 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7067
7068 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7069 return;
7070
7071 timeout = wpa_s->conf->p2p_group_idle;
7072 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
7073 (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
7074 timeout = P2P_MAX_CLIENT_IDLE;
7075
7076 if (timeout == 0)
7077 return;
7078
7079 if (timeout < 0) {
7080 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
7081 timeout = 0; /* special client mode no-timeout */
7082 else
7083 return;
7084 }
7085
7086 if (wpa_s->p2p_in_provisioning) {
7087 /*
7088 * Use the normal group formation timeout during the
7089 * provisioning phase to avoid terminating this process too
7090 * early due to group idle timeout.
7091 */
7092 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7093 "during provisioning");
7094 return;
7095 }
7096
7097 if (wpa_s->show_group_started) {
7098 /*
7099 * Use the normal group formation timeout between the end of
7100 * the provisioning phase and completion of 4-way handshake to
7101 * avoid terminating this process too early due to group idle
7102 * timeout.
7103 */
7104 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7105 "while waiting for initial 4-way handshake to "
7106 "complete");
7107 return;
7108 }
7109
7110 wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
7111 timeout);
7112 eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
7113 wpa_s, NULL);
7114 }
7115
7116
7117 /* Returns 1 if the interface was removed */
7118 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7119 u16 reason_code, const u8 *ie, size_t ie_len,
7120 int locally_generated)
7121 {
7122 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7123 return 0;
7124
7125 if (!locally_generated)
7126 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7127 ie_len);
7128
7129 if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
7130 wpa_s->current_ssid &&
7131 wpa_s->current_ssid->p2p_group &&
7132 wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
7133 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
7134 "session is ending");
7135 if (wpas_p2p_group_delete(wpa_s,
7136 P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
7137 > 0)
7138 return 1;
7139 }
7140
7141 return 0;
7142 }
7143
7144
7145 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7146 u16 reason_code, const u8 *ie, size_t ie_len,
7147 int locally_generated)
7148 {
7149 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7150 return;
7151
7152 if (!locally_generated)
7153 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7154 ie_len);
7155 }
7156
7157
7158 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
7159 {
7160 struct p2p_data *p2p = wpa_s->global->p2p;
7161
7162 if (p2p == NULL)
7163 return;
7164
7165 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
7166 return;
7167
7168 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
7169 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
7170
7171 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
7172 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
7173
7174 if (wpa_s->wps &&
7175 (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
7176 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
7177
7178 if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
7179 p2p_set_uuid(p2p, wpa_s->wps->uuid);
7180
7181 if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
7182 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
7183 p2p_set_model_name(p2p, wpa_s->conf->model_name);
7184 p2p_set_model_number(p2p, wpa_s->conf->model_number);
7185 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
7186 }
7187
7188 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
7189 p2p_set_sec_dev_types(p2p,
7190 (void *) wpa_s->conf->sec_device_type,
7191 wpa_s->conf->num_sec_device_types);
7192
7193 if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
7194 int i;
7195 p2p_remove_wps_vendor_extensions(p2p);
7196 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
7197 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
7198 continue;
7199 p2p_add_wps_vendor_extension(
7200 p2p, wpa_s->conf->wps_vendor_ext[i]);
7201 }
7202 }
7203
7204 if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
7205 wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
7206 char country[3];
7207 country[0] = wpa_s->conf->country[0];
7208 country[1] = wpa_s->conf->country[1];
7209 country[2] = 0x04;
7210 p2p_set_country(p2p, country);
7211 }
7212
7213 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
7214 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
7215 wpa_s->conf->p2p_ssid_postfix ?
7216 os_strlen(wpa_s->conf->p2p_ssid_postfix) :
7217 0);
7218 }
7219
7220 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
7221 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
7222
7223 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
7224 u8 reg_class, channel;
7225 int ret;
7226 unsigned int r;
7227 u8 channel_forced;
7228
7229 if (wpa_s->conf->p2p_listen_reg_class &&
7230 wpa_s->conf->p2p_listen_channel) {
7231 reg_class = wpa_s->conf->p2p_listen_reg_class;
7232 channel = wpa_s->conf->p2p_listen_channel;
7233 channel_forced = 1;
7234 } else {
7235 reg_class = 81;
7236 /*
7237 * Pick one of the social channels randomly as the
7238 * listen channel.
7239 */
7240 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7241 channel = 1;
7242 else
7243 channel = 1 + (r % 3) * 5;
7244 channel_forced = 0;
7245 }
7246 ret = p2p_set_listen_channel(p2p, reg_class, channel,
7247 channel_forced);
7248 if (ret)
7249 wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
7250 "failed: %d", ret);
7251 }
7252 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
7253 u8 op_reg_class, op_channel, cfg_op_channel;
7254 int ret = 0;
7255 unsigned int r;
7256 if (wpa_s->conf->p2p_oper_reg_class &&
7257 wpa_s->conf->p2p_oper_channel) {
7258 op_reg_class = wpa_s->conf->p2p_oper_reg_class;
7259 op_channel = wpa_s->conf->p2p_oper_channel;
7260 cfg_op_channel = 1;
7261 } else {
7262 op_reg_class = 81;
7263 /*
7264 * Use random operation channel from (1, 6, 11)
7265 *if no other preference is indicated.
7266 */
7267 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7268 op_channel = 1;
7269 else
7270 op_channel = 1 + (r % 3) * 5;
7271 cfg_op_channel = 0;
7272 }
7273 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
7274 cfg_op_channel);
7275 if (ret)
7276 wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
7277 "failed: %d", ret);
7278 }
7279
7280 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
7281 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
7282 wpa_s->conf->p2p_pref_chan) < 0) {
7283 wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
7284 "update failed");
7285 }
7286
7287 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
7288 wpa_printf(MSG_ERROR, "P2P: No GO channel list "
7289 "update failed");
7290 }
7291 }
7292
7293 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
7294 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
7295 }
7296
7297
7298 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
7299 int duration)
7300 {
7301 if (!wpa_s->ap_iface)
7302 return -1;
7303 return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
7304 duration);
7305 }
7306
7307
7308 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
7309 {
7310 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7311 return -1;
7312
7313 wpa_s->global->cross_connection = enabled;
7314 p2p_set_cross_connect(wpa_s->global->p2p, enabled);
7315
7316 if (!enabled) {
7317 struct wpa_supplicant *iface;
7318
7319 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7320 {
7321 if (iface->cross_connect_enabled == 0)
7322 continue;
7323
7324 iface->cross_connect_enabled = 0;
7325 iface->cross_connect_in_use = 0;
7326 wpa_msg_global(iface->p2pdev, MSG_INFO,
7327 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7328 iface->ifname,
7329 iface->cross_connect_uplink);
7330 }
7331 }
7332
7333 return 0;
7334 }
7335
7336
7337 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
7338 {
7339 struct wpa_supplicant *iface;
7340
7341 if (!uplink->global->cross_connection)
7342 return;
7343
7344 for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7345 if (!iface->cross_connect_enabled)
7346 continue;
7347 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7348 0)
7349 continue;
7350 if (iface->ap_iface == NULL)
7351 continue;
7352 if (iface->cross_connect_in_use)
7353 continue;
7354
7355 iface->cross_connect_in_use = 1;
7356 wpa_msg_global(iface->p2pdev, MSG_INFO,
7357 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7358 iface->ifname, iface->cross_connect_uplink);
7359 }
7360 }
7361
7362
7363 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
7364 {
7365 struct wpa_supplicant *iface;
7366
7367 for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7368 if (!iface->cross_connect_enabled)
7369 continue;
7370 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7371 0)
7372 continue;
7373 if (!iface->cross_connect_in_use)
7374 continue;
7375
7376 wpa_msg_global(iface->p2pdev, MSG_INFO,
7377 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7378 iface->ifname, iface->cross_connect_uplink);
7379 iface->cross_connect_in_use = 0;
7380 }
7381 }
7382
7383
7384 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
7385 {
7386 if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
7387 wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
7388 wpa_s->cross_connect_disallowed)
7389 wpas_p2p_disable_cross_connect(wpa_s);
7390 else
7391 wpas_p2p_enable_cross_connect(wpa_s);
7392 if (!wpa_s->ap_iface &&
7393 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7394 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7395 }
7396
7397
7398 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
7399 {
7400 wpas_p2p_disable_cross_connect(wpa_s);
7401 if (!wpa_s->ap_iface &&
7402 !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
7403 wpa_s, NULL))
7404 wpas_p2p_set_group_idle_timeout(wpa_s);
7405 }
7406
7407
7408 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
7409 {
7410 struct wpa_supplicant *iface;
7411
7412 if (!wpa_s->global->cross_connection)
7413 return;
7414
7415 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7416 if (iface == wpa_s)
7417 continue;
7418 if (iface->drv_flags &
7419 WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
7420 continue;
7421 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) &&
7422 iface != wpa_s->parent)
7423 continue;
7424
7425 wpa_s->cross_connect_enabled = 1;
7426 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
7427 sizeof(wpa_s->cross_connect_uplink));
7428 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
7429 "%s to %s whenever uplink is available",
7430 wpa_s->ifname, wpa_s->cross_connect_uplink);
7431
7432 if (iface->ap_iface || iface->current_ssid == NULL ||
7433 iface->current_ssid->mode != WPAS_MODE_INFRA ||
7434 iface->cross_connect_disallowed ||
7435 iface->wpa_state != WPA_COMPLETED)
7436 break;
7437
7438 wpa_s->cross_connect_in_use = 1;
7439 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
7440 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7441 wpa_s->ifname, wpa_s->cross_connect_uplink);
7442 break;
7443 }
7444 }
7445
7446
7447 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
7448 {
7449 if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
7450 !wpa_s->p2p_in_provisioning)
7451 return 0; /* not P2P client operation */
7452
7453 wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
7454 "session overlap");
7455 if (wpa_s != wpa_s->p2pdev)
7456 wpa_msg_ctrl(wpa_s->p2pdev, MSG_INFO, WPS_EVENT_OVERLAP);
7457 wpas_p2p_group_formation_failed(wpa_s, 0);
7458 return 1;
7459 }
7460
7461
7462 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
7463 {
7464 struct wpa_supplicant *wpa_s = eloop_ctx;
7465 wpas_p2p_notif_pbc_overlap(wpa_s);
7466 }
7467
7468
7469 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s,
7470 enum wpas_p2p_channel_update_trig trig)
7471 {
7472 struct p2p_channels chan, cli_chan;
7473 struct wpa_used_freq_data *freqs = NULL;
7474 unsigned int num = wpa_s->num_multichan_concurrent;
7475
7476 if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
7477 return;
7478
7479 freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
7480 if (!freqs)
7481 return;
7482
7483 num = get_shared_radio_freqs_data(wpa_s, freqs, num);
7484
7485 os_memset(&chan, 0, sizeof(chan));
7486 os_memset(&cli_chan, 0, sizeof(cli_chan));
7487 if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
7488 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
7489 "channel list");
7490 return;
7491 }
7492
7493 p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
7494
7495 wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
7496
7497 /*
7498 * The used frequencies map changed, so it is possible that a GO is
7499 * using a channel that is no longer valid for P2P use. It is also
7500 * possible that due to policy consideration, it would be preferable to
7501 * move it to a frequency already used by other station interfaces.
7502 */
7503 wpas_p2p_consider_moving_gos(wpa_s, freqs, num, trig);
7504
7505 os_free(freqs);
7506 }
7507
7508
7509 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
7510 struct wpa_scan_results *scan_res)
7511 {
7512 wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
7513 }
7514
7515
7516 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
7517 {
7518 struct wpa_global *global = wpa_s->global;
7519 int found = 0;
7520 const u8 *peer;
7521
7522 if (global->p2p == NULL)
7523 return -1;
7524
7525 wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
7526
7527 if (wpa_s->pending_interface_name[0] &&
7528 !is_zero_ether_addr(wpa_s->pending_interface_addr))
7529 found = 1;
7530
7531 peer = p2p_get_go_neg_peer(global->p2p);
7532 if (peer) {
7533 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
7534 MACSTR, MAC2STR(peer));
7535 p2p_unauthorize(global->p2p, peer);
7536 found = 1;
7537 }
7538
7539 if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
7540 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
7541 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
7542 found = 1;
7543 }
7544
7545 if (wpa_s->pending_pd_before_join) {
7546 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
7547 wpa_s->pending_pd_before_join = 0;
7548 found = 1;
7549 }
7550
7551 wpas_p2p_stop_find(wpa_s);
7552
7553 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7554 if (wpa_s == global->p2p_group_formation &&
7555 (wpa_s->p2p_in_provisioning ||
7556 wpa_s->parent->pending_interface_type ==
7557 WPA_IF_P2P_CLIENT)) {
7558 wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
7559 "formation found - cancelling",
7560 wpa_s->ifname);
7561 found = 1;
7562 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7563 wpa_s->p2pdev, NULL);
7564 if (wpa_s->p2p_in_provisioning) {
7565 wpas_group_formation_completed(wpa_s, 0, 0);
7566 break;
7567 }
7568 wpas_p2p_group_delete(wpa_s,
7569 P2P_GROUP_REMOVAL_REQUESTED);
7570 break;
7571 } else if (wpa_s->p2p_in_invitation) {
7572 wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
7573 wpa_s->ifname);
7574 found = 1;
7575 wpas_p2p_group_formation_failed(wpa_s, 0);
7576 break;
7577 }
7578 }
7579
7580 if (!found) {
7581 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
7582 return -1;
7583 }
7584
7585 return 0;
7586 }
7587
7588
7589 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
7590 {
7591 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7592 return;
7593
7594 wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
7595 "being available anymore");
7596 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
7597 }
7598
7599
7600 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
7601 int freq_24, int freq_5, int freq_overall)
7602 {
7603 struct p2p_data *p2p = wpa_s->global->p2p;
7604 if (p2p == NULL)
7605 return;
7606 p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
7607 }
7608
7609
7610 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
7611 {
7612 u8 peer[ETH_ALEN];
7613 struct p2p_data *p2p = wpa_s->global->p2p;
7614
7615 if (p2p == NULL)
7616 return -1;
7617
7618 if (hwaddr_aton(addr, peer))
7619 return -1;
7620
7621 return p2p_unauthorize(p2p, peer);
7622 }
7623
7624
7625 /**
7626 * wpas_p2p_disconnect - Disconnect from a P2P Group
7627 * @wpa_s: Pointer to wpa_supplicant data
7628 * Returns: 0 on success, -1 on failure
7629 *
7630 * This can be used to disconnect from a group in which the local end is a P2P
7631 * Client or to end a P2P Group in case the local end is the Group Owner. If a
7632 * virtual network interface was created for this group, that interface will be
7633 * removed. Otherwise, only the configured P2P group network will be removed
7634 * from the interface.
7635 */
7636 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
7637 {
7638
7639 if (wpa_s == NULL)
7640 return -1;
7641
7642 return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
7643 -1 : 0;
7644 }
7645
7646
7647 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
7648 {
7649 int ret;
7650
7651 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7652 return 0;
7653
7654 ret = p2p_in_progress(wpa_s->global->p2p);
7655 if (ret == 0) {
7656 /*
7657 * Check whether there is an ongoing WPS provisioning step (or
7658 * other parts of group formation) on another interface since
7659 * p2p_in_progress() does not report this to avoid issues for
7660 * scans during such provisioning step.
7661 */
7662 if (wpa_s->global->p2p_group_formation &&
7663 wpa_s->global->p2p_group_formation != wpa_s) {
7664 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
7665 "in group formation",
7666 wpa_s->global->p2p_group_formation->ifname);
7667 ret = 1;
7668 }
7669 }
7670
7671 if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
7672 struct os_reltime now;
7673 os_get_reltime(&now);
7674 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
7675 P2P_MAX_INITIAL_CONN_WAIT_GO)) {
7676 /* Wait for the first client has expired */
7677 wpa_s->global->p2p_go_wait_client.sec = 0;
7678 } else {
7679 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
7680 ret = 1;
7681 }
7682 }
7683
7684 return ret;
7685 }
7686
7687
7688 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
7689 struct wpa_ssid *ssid)
7690 {
7691 if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
7692 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7693 wpa_s->p2pdev, NULL) > 0) {
7694 /**
7695 * Remove the network by scheduling the group formation
7696 * timeout to happen immediately. The teardown code
7697 * needs to be scheduled to run asynch later so that we
7698 * don't delete data from under ourselves unexpectedly.
7699 * Calling wpas_p2p_group_formation_timeout directly
7700 * causes a series of crashes in WPS failure scenarios.
7701 */
7702 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
7703 "P2P group network getting removed");
7704 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
7705 wpa_s->p2pdev, NULL);
7706 }
7707 }
7708
7709
7710 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
7711 const u8 *addr, const u8 *ssid,
7712 size_t ssid_len)
7713 {
7714 struct wpa_ssid *s;
7715 size_t i;
7716
7717 for (s = wpa_s->conf->ssid; s; s = s->next) {
7718 if (s->disabled != 2)
7719 continue;
7720 if (ssid &&
7721 (ssid_len != s->ssid_len ||
7722 os_memcmp(ssid, s->ssid, ssid_len) != 0))
7723 continue;
7724 if (addr == NULL) {
7725 if (s->mode == WPAS_MODE_P2P_GO)
7726 return s;
7727 continue;
7728 }
7729 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
7730 return s; /* peer is GO in the persistent group */
7731 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
7732 continue;
7733 for (i = 0; i < s->num_p2p_clients; i++) {
7734 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
7735 addr, ETH_ALEN) == 0)
7736 return s; /* peer is P2P client in persistent
7737 * group */
7738 }
7739 }
7740
7741 return NULL;
7742 }
7743
7744
7745 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
7746 const u8 *addr)
7747 {
7748 if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7749 wpa_s->p2pdev, NULL) > 0) {
7750 /*
7751 * This can happen if WPS provisioning step is not terminated
7752 * cleanly (e.g., P2P Client does not send WSC_Done). Since the
7753 * peer was able to connect, there is no need to time out group
7754 * formation after this, though. In addition, this is used with
7755 * the initial connection wait on the GO as a separate formation
7756 * timeout and as such, expected to be hit after the initial WPS
7757 * provisioning step.
7758 */
7759 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
7760
7761 if (!wpa_s->p2p_go_group_formation_completed &&
7762 !wpa_s->group_formation_reported) {
7763 /*
7764 * GO has not yet notified group formation success since
7765 * the WPS step was not completed cleanly. Do that
7766 * notification now since the P2P Client was able to
7767 * connect and as such, must have received the
7768 * credential from the WPS step.
7769 */
7770 if (wpa_s->global->p2p)
7771 p2p_wps_success_cb(wpa_s->global->p2p, addr);
7772 wpas_group_formation_completed(wpa_s, 1, 0);
7773 }
7774 }
7775 if (!wpa_s->p2p_go_group_formation_completed) {
7776 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
7777 wpa_s->p2p_go_group_formation_completed = 1;
7778 wpa_s->global->p2p_group_formation = NULL;
7779 wpa_s->p2p_in_provisioning = 0;
7780 wpa_s->p2p_in_invitation = 0;
7781 }
7782 wpa_s->global->p2p_go_wait_client.sec = 0;
7783 if (addr == NULL)
7784 return;
7785 wpas_p2p_add_persistent_group_client(wpa_s, addr);
7786 }
7787
7788
7789 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
7790 int group_added)
7791 {
7792 struct wpa_supplicant *group = wpa_s;
7793 int ret = 0;
7794
7795 if (wpa_s->global->p2p_group_formation)
7796 group = wpa_s->global->p2p_group_formation;
7797 wpa_s = wpa_s->global->p2p_init_wpa_s;
7798 offchannel_send_action_done(wpa_s);
7799 if (group_added)
7800 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
7801 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
7802 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
7803 wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
7804 0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
7805 wpa_s->p2p_go_vht_center_freq2,
7806 wpa_s->p2p_persistent_id,
7807 wpa_s->p2p_pd_before_go_neg,
7808 wpa_s->p2p_go_ht40,
7809 wpa_s->p2p_go_vht,
7810 wpa_s->p2p_go_max_oper_chwidth, NULL, 0);
7811 return ret;
7812 }
7813
7814
7815 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
7816 {
7817 int res;
7818
7819 if (!wpa_s->p2p_fallback_to_go_neg ||
7820 wpa_s->p2p_in_provisioning <= 5)
7821 return 0;
7822
7823 if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
7824 return 0; /* peer operating as a GO */
7825
7826 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
7827 "fallback to GO Negotiation");
7828 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG
7829 "reason=GO-not-found");
7830 res = wpas_p2p_fallback_to_go_neg(wpa_s, 1);
7831
7832 return res == 1 ? 2 : 1;
7833 }
7834
7835
7836 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
7837 {
7838 struct wpa_supplicant *ifs;
7839
7840 if (wpa_s->wpa_state > WPA_SCANNING) {
7841 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
7842 "concurrent operation",
7843 wpa_s->conf->p2p_search_delay);
7844 return wpa_s->conf->p2p_search_delay;
7845 }
7846
7847 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
7848 radio_list) {
7849 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
7850 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
7851 "delay due to concurrent operation on "
7852 "interface %s",
7853 wpa_s->conf->p2p_search_delay,
7854 ifs->ifname);
7855 return wpa_s->conf->p2p_search_delay;
7856 }
7857 }
7858
7859 return 0;
7860 }
7861
7862
7863 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
7864 struct wpa_ssid *s, const u8 *addr,
7865 int iface_addr)
7866 {
7867 struct psk_list_entry *psk, *tmp;
7868 int changed = 0;
7869
7870 dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
7871 list) {
7872 if ((iface_addr && !psk->p2p &&
7873 os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
7874 (!iface_addr && psk->p2p &&
7875 os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
7876 wpa_dbg(wpa_s, MSG_DEBUG,
7877 "P2P: Remove persistent group PSK list entry for "
7878 MACSTR " p2p=%u",
7879 MAC2STR(psk->addr), psk->p2p);
7880 dl_list_del(&psk->list);
7881 os_free(psk);
7882 changed++;
7883 }
7884 }
7885
7886 return changed;
7887 }
7888
7889
7890 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
7891 const u8 *p2p_dev_addr,
7892 const u8 *psk, size_t psk_len)
7893 {
7894 struct wpa_ssid *ssid = wpa_s->current_ssid;
7895 struct wpa_ssid *persistent;
7896 struct psk_list_entry *p, *last;
7897
7898 if (psk_len != sizeof(p->psk))
7899 return;
7900
7901 if (p2p_dev_addr) {
7902 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
7903 " p2p_dev_addr=" MACSTR,
7904 MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
7905 if (is_zero_ether_addr(p2p_dev_addr))
7906 p2p_dev_addr = NULL;
7907 } else {
7908 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
7909 MAC2STR(mac_addr));
7910 }
7911
7912 if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
7913 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
7914 /* To be added to persistent group once created */
7915 if (wpa_s->global->add_psk == NULL) {
7916 wpa_s->global->add_psk = os_zalloc(sizeof(*p));
7917 if (wpa_s->global->add_psk == NULL)
7918 return;
7919 }
7920 p = wpa_s->global->add_psk;
7921 if (p2p_dev_addr) {
7922 p->p2p = 1;
7923 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7924 } else {
7925 p->p2p = 0;
7926 os_memcpy(p->addr, mac_addr, ETH_ALEN);
7927 }
7928 os_memcpy(p->psk, psk, psk_len);
7929 return;
7930 }
7931
7932 if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
7933 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
7934 return;
7935 }
7936
7937 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, NULL, ssid->ssid,
7938 ssid->ssid_len);
7939 if (!persistent) {
7940 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
7941 return;
7942 }
7943
7944 p = os_zalloc(sizeof(*p));
7945 if (p == NULL)
7946 return;
7947 if (p2p_dev_addr) {
7948 p->p2p = 1;
7949 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7950 } else {
7951 p->p2p = 0;
7952 os_memcpy(p->addr, mac_addr, ETH_ALEN);
7953 }
7954 os_memcpy(p->psk, psk, psk_len);
7955
7956 if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
7957 (last = dl_list_last(&persistent->psk_list,
7958 struct psk_list_entry, list))) {
7959 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
7960 MACSTR " (p2p=%u) to make room for a new one",
7961 MAC2STR(last->addr), last->p2p);
7962 dl_list_del(&last->list);
7963 os_free(last);
7964 }
7965
7966 wpas_p2p_remove_psk_entry(wpa_s->p2pdev, persistent,
7967 p2p_dev_addr ? p2p_dev_addr : mac_addr,
7968 p2p_dev_addr == NULL);
7969 if (p2p_dev_addr) {
7970 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
7971 MACSTR, MAC2STR(p2p_dev_addr));
7972 } else {
7973 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
7974 MAC2STR(mac_addr));
7975 }
7976 dl_list_add(&persistent->psk_list, &p->list);
7977
7978 if (wpa_s->p2pdev->conf->update_config &&
7979 wpa_config_write(wpa_s->p2pdev->confname, wpa_s->p2pdev->conf))
7980 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
7981 }
7982
7983
7984 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
7985 struct wpa_ssid *s, const u8 *addr,
7986 int iface_addr)
7987 {
7988 int res;
7989
7990 res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
7991 if (res > 0 && wpa_s->conf->update_config &&
7992 wpa_config_write(wpa_s->confname, wpa_s->conf))
7993 wpa_dbg(wpa_s, MSG_DEBUG,
7994 "P2P: Failed to update configuration");
7995 }
7996
7997
7998 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
7999 const u8 *peer, int iface_addr)
8000 {
8001 struct hostapd_data *hapd;
8002 struct hostapd_wpa_psk *psk, *prev, *rem;
8003 struct sta_info *sta;
8004
8005 if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
8006 wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
8007 return;
8008
8009 /* Remove per-station PSK entry */
8010 hapd = wpa_s->ap_iface->bss[0];
8011 prev = NULL;
8012 psk = hapd->conf->ssid.wpa_psk;
8013 while (psk) {
8014 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
8015 (!iface_addr &&
8016 os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
8017 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
8018 MACSTR " iface_addr=%d",
8019 MAC2STR(peer), iface_addr);
8020 if (prev)
8021 prev->next = psk->next;
8022 else
8023 hapd->conf->ssid.wpa_psk = psk->next;
8024 rem = psk;
8025 psk = psk->next;
8026 os_free(rem);
8027 } else {
8028 prev = psk;
8029 psk = psk->next;
8030 }
8031 }
8032
8033 /* Disconnect from group */
8034 if (iface_addr)
8035 sta = ap_get_sta(hapd, peer);
8036 else
8037 sta = ap_get_sta_p2p(hapd, peer);
8038 if (sta) {
8039 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
8040 " (iface_addr=%d) from group",
8041 MAC2STR(peer), iface_addr);
8042 hostapd_drv_sta_deauth(hapd, sta->addr,
8043 WLAN_REASON_DEAUTH_LEAVING);
8044 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
8045 }
8046 }
8047
8048
8049 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
8050 int iface_addr)
8051 {
8052 struct wpa_ssid *s;
8053 struct wpa_supplicant *w;
8054 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
8055
8056 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
8057
8058 /* Remove from any persistent group */
8059 for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
8060 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
8061 continue;
8062 if (!iface_addr)
8063 wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0);
8064 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr);
8065 }
8066
8067 /* Remove from any operating group */
8068 for (w = wpa_s->global->ifaces; w; w = w->next)
8069 wpas_p2p_remove_client_go(w, peer, iface_addr);
8070 }
8071
8072
8073 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
8074 {
8075 struct wpa_supplicant *wpa_s = eloop_ctx;
8076 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
8077 }
8078
8079
8080 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
8081 {
8082 struct wpa_supplicant *wpa_s = eloop_ctx;
8083
8084 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
8085 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
8086 }
8087
8088
8089 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
8090 struct wpa_ssid *ssid)
8091 {
8092 struct wpa_supplicant *iface;
8093
8094 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8095 if (!iface->current_ssid ||
8096 iface->current_ssid->frequency == freq ||
8097 (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
8098 !iface->current_ssid->p2p_group))
8099 continue;
8100
8101 /* Remove the connection with least priority */
8102 if (!wpas_is_p2p_prioritized(iface)) {
8103 /* STA connection has priority over existing
8104 * P2P connection, so remove the interface. */
8105 wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
8106 eloop_register_timeout(0, 0,
8107 wpas_p2p_group_freq_conflict,
8108 iface, NULL);
8109 /* If connection in progress is P2P connection, do not
8110 * proceed for the connection. */
8111 if (wpa_s == iface)
8112 return -1;
8113 else
8114 return 0;
8115 } else {
8116 /* P2P connection has priority, disable the STA network
8117 */
8118 wpa_supplicant_disable_network(wpa_s->global->ifaces,
8119 ssid);
8120 wpa_msg(wpa_s->global->ifaces, MSG_INFO,
8121 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
8122 os_memset(wpa_s->global->ifaces->pending_bssid, 0,
8123 ETH_ALEN);
8124 /* If P2P connection is in progress, continue
8125 * connecting...*/
8126 if (wpa_s == iface)
8127 return 0;
8128 else
8129 return -1;
8130 }
8131 }
8132
8133 return 0;
8134 }
8135
8136
8137 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
8138 {
8139 struct wpa_ssid *ssid = wpa_s->current_ssid;
8140
8141 if (ssid == NULL || !ssid->p2p_group)
8142 return 0;
8143
8144 if (wpa_s->p2p_last_4way_hs_fail &&
8145 wpa_s->p2p_last_4way_hs_fail == ssid) {
8146 u8 go_dev_addr[ETH_ALEN];
8147 struct wpa_ssid *persistent;
8148
8149 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
8150 ssid->ssid,
8151 ssid->ssid_len) <= 0) {
8152 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
8153 goto disconnect;
8154 }
8155
8156 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
8157 MACSTR, MAC2STR(go_dev_addr));
8158 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, go_dev_addr,
8159 ssid->ssid,
8160 ssid->ssid_len);
8161 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
8162 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
8163 goto disconnect;
8164 }
8165 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
8166 P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
8167 persistent->id);
8168 disconnect:
8169 wpa_s->p2p_last_4way_hs_fail = NULL;
8170 /*
8171 * Remove the group from a timeout to avoid issues with caller
8172 * continuing to use the interface if this is on a P2P group
8173 * interface.
8174 */
8175 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
8176 wpa_s, NULL);
8177 return 1;
8178 }
8179
8180 wpa_s->p2p_last_4way_hs_fail = ssid;
8181 return 0;
8182 }
8183
8184
8185 #ifdef CONFIG_WPS_NFC
8186
8187 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
8188 struct wpabuf *p2p)
8189 {
8190 struct wpabuf *ret;
8191 size_t wsc_len;
8192
8193 if (p2p == NULL) {
8194 wpabuf_free(wsc);
8195 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
8196 return NULL;
8197 }
8198
8199 wsc_len = wsc ? wpabuf_len(wsc) : 0;
8200 ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
8201 if (ret == NULL) {
8202 wpabuf_free(wsc);
8203 wpabuf_free(p2p);
8204 return NULL;
8205 }
8206
8207 wpabuf_put_be16(ret, wsc_len);
8208 if (wsc)
8209 wpabuf_put_buf(ret, wsc);
8210 wpabuf_put_be16(ret, wpabuf_len(p2p));
8211 wpabuf_put_buf(ret, p2p);
8212
8213 wpabuf_free(wsc);
8214 wpabuf_free(p2p);
8215 wpa_hexdump_buf(MSG_DEBUG,
8216 "P2P: Generated NFC connection handover message", ret);
8217
8218 if (ndef && ret) {
8219 struct wpabuf *tmp;
8220 tmp = ndef_build_p2p(ret);
8221 wpabuf_free(ret);
8222 if (tmp == NULL) {
8223 wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
8224 return NULL;
8225 }
8226 ret = tmp;
8227 }
8228
8229 return ret;
8230 }
8231
8232
8233 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
8234 struct wpa_ssid **ssid, u8 *go_dev_addr)
8235 {
8236 struct wpa_supplicant *iface;
8237
8238 if (go_dev_addr)
8239 os_memset(go_dev_addr, 0, ETH_ALEN);
8240 if (ssid)
8241 *ssid = NULL;
8242 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8243 if (iface->wpa_state < WPA_ASSOCIATING ||
8244 iface->current_ssid == NULL || iface->assoc_freq == 0 ||
8245 !iface->current_ssid->p2p_group ||
8246 iface->current_ssid->mode != WPAS_MODE_INFRA)
8247 continue;
8248 if (ssid)
8249 *ssid = iface->current_ssid;
8250 if (go_dev_addr)
8251 os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
8252 return iface->assoc_freq;
8253 }
8254 return 0;
8255 }
8256
8257
8258 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
8259 int ndef)
8260 {
8261 struct wpabuf *wsc, *p2p;
8262 struct wpa_ssid *ssid;
8263 u8 go_dev_addr[ETH_ALEN];
8264 int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8265
8266 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
8267 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
8268 return NULL;
8269 }
8270
8271 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8272 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8273 &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
8274 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
8275 return NULL;
8276 }
8277
8278 if (cli_freq == 0) {
8279 wsc = wps_build_nfc_handover_req_p2p(
8280 wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
8281 } else
8282 wsc = NULL;
8283 p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
8284 go_dev_addr, ssid ? ssid->ssid : NULL,
8285 ssid ? ssid->ssid_len : 0);
8286
8287 return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8288 }
8289
8290
8291 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
8292 int ndef, int tag)
8293 {
8294 struct wpabuf *wsc, *p2p;
8295 struct wpa_ssid *ssid;
8296 u8 go_dev_addr[ETH_ALEN];
8297 int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8298
8299 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8300 return NULL;
8301
8302 if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8303 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8304 &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8305 return NULL;
8306
8307 if (cli_freq == 0) {
8308 wsc = wps_build_nfc_handover_sel_p2p(
8309 wpa_s->parent->wps,
8310 tag ? wpa_s->conf->wps_nfc_dev_pw_id :
8311 DEV_PW_NFC_CONNECTION_HANDOVER,
8312 wpa_s->conf->wps_nfc_dh_pubkey,
8313 tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
8314 } else
8315 wsc = NULL;
8316 p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
8317 go_dev_addr, ssid ? ssid->ssid : NULL,
8318 ssid ? ssid->ssid_len : 0);
8319
8320 return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8321 }
8322
8323
8324 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
8325 struct p2p_nfc_params *params)
8326 {
8327 wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
8328 "connection handover (freq=%d)",
8329 params->go_freq);
8330
8331 if (params->go_freq && params->go_ssid_len) {
8332 wpa_s->p2p_wps_method = WPS_NFC;
8333 wpa_s->pending_join_wps_method = WPS_NFC;
8334 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
8335 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
8336 ETH_ALEN);
8337 return wpas_p2p_join_start(wpa_s, params->go_freq,
8338 params->go_ssid,
8339 params->go_ssid_len);
8340 }
8341
8342 return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8343 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
8344 params->go_freq, wpa_s->p2p_go_vht_center_freq2,
8345 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8346 params->go_ssid_len ? params->go_ssid : NULL,
8347 params->go_ssid_len);
8348 }
8349
8350
8351 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
8352 struct p2p_nfc_params *params, int tag)
8353 {
8354 int res, persistent;
8355 struct wpa_ssid *ssid;
8356
8357 wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
8358 "connection handover");
8359 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
8360 ssid = wpa_s->current_ssid;
8361 if (ssid == NULL)
8362 continue;
8363 if (ssid->mode != WPAS_MODE_P2P_GO)
8364 continue;
8365 if (wpa_s->ap_iface == NULL)
8366 continue;
8367 break;
8368 }
8369 if (wpa_s == NULL) {
8370 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
8371 return -1;
8372 }
8373
8374 if (wpa_s->parent->p2p_oob_dev_pw_id !=
8375 DEV_PW_NFC_CONNECTION_HANDOVER &&
8376 !wpa_s->parent->p2p_oob_dev_pw) {
8377 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
8378 return -1;
8379 }
8380 res = wpas_ap_wps_add_nfc_pw(
8381 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
8382 wpa_s->parent->p2p_oob_dev_pw,
8383 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
8384 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
8385 if (res)
8386 return res;
8387
8388 if (!tag) {
8389 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
8390 return 0;
8391 }
8392
8393 if (!params->peer ||
8394 !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
8395 return 0;
8396
8397 wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
8398 " to join", MAC2STR(params->peer->p2p_device_addr));
8399
8400 wpa_s->global->p2p_invite_group = wpa_s;
8401 persistent = ssid->p2p_persistent_group &&
8402 wpas_p2p_get_persistent(wpa_s->parent,
8403 params->peer->p2p_device_addr,
8404 ssid->ssid, ssid->ssid_len);
8405 wpa_s->parent->pending_invite_ssid_id = -1;
8406
8407 return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
8408 P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
8409 ssid->ssid, ssid->ssid_len, ssid->frequency,
8410 wpa_s->global->p2p_dev_addr, persistent, 0,
8411 wpa_s->parent->p2p_oob_dev_pw_id);
8412 }
8413
8414
8415 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
8416 struct p2p_nfc_params *params,
8417 int forced_freq)
8418 {
8419 wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
8420 "connection handover");
8421 return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8422 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
8423 forced_freq, wpa_s->p2p_go_vht_center_freq2,
8424 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8425 NULL, 0);
8426 }
8427
8428
8429 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
8430 struct p2p_nfc_params *params,
8431 int forced_freq)
8432 {
8433 int res;
8434
8435 wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
8436 "connection handover");
8437 res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8438 WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
8439 forced_freq, wpa_s->p2p_go_vht_center_freq2,
8440 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8441 NULL, 0);
8442 if (res)
8443 return res;
8444
8445 res = wpas_p2p_listen(wpa_s, 60);
8446 if (res) {
8447 p2p_unauthorize(wpa_s->global->p2p,
8448 params->peer->p2p_device_addr);
8449 }
8450
8451 return res;
8452 }
8453
8454
8455 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
8456 const struct wpabuf *data,
8457 int sel, int tag, int forced_freq)
8458 {
8459 const u8 *pos, *end;
8460 u16 len, id;
8461 struct p2p_nfc_params params;
8462 int res;
8463
8464 os_memset(&params, 0, sizeof(params));
8465 params.sel = sel;
8466
8467 wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
8468
8469 pos = wpabuf_head(data);
8470 end = pos + wpabuf_len(data);
8471
8472 if (end - pos < 2) {
8473 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
8474 "attributes");
8475 return -1;
8476 }
8477 len = WPA_GET_BE16(pos);
8478 pos += 2;
8479 if (len > end - pos) {
8480 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
8481 "attributes");
8482 return -1;
8483 }
8484 params.wsc_attr = pos;
8485 params.wsc_len = len;
8486 pos += len;
8487
8488 if (end - pos < 2) {
8489 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
8490 "attributes");
8491 return -1;
8492 }
8493 len = WPA_GET_BE16(pos);
8494 pos += 2;
8495 if (len > end - pos) {
8496 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
8497 "attributes");
8498 return -1;
8499 }
8500 params.p2p_attr = pos;
8501 params.p2p_len = len;
8502 pos += len;
8503
8504 wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
8505 params.wsc_attr, params.wsc_len);
8506 wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
8507 params.p2p_attr, params.p2p_len);
8508 if (pos < end) {
8509 wpa_hexdump(MSG_DEBUG,
8510 "P2P: Ignored extra data after P2P attributes",
8511 pos, end - pos);
8512 }
8513
8514 res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
8515 if (res)
8516 return res;
8517
8518 if (params.next_step == NO_ACTION)
8519 return 0;
8520
8521 if (params.next_step == BOTH_GO) {
8522 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
8523 MAC2STR(params.peer->p2p_device_addr));
8524 return 0;
8525 }
8526
8527 if (params.next_step == PEER_CLIENT) {
8528 if (!is_zero_ether_addr(params.go_dev_addr)) {
8529 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8530 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
8531 " ssid=\"%s\"",
8532 MAC2STR(params.peer->p2p_device_addr),
8533 params.go_freq,
8534 MAC2STR(params.go_dev_addr),
8535 wpa_ssid_txt(params.go_ssid,
8536 params.go_ssid_len));
8537 } else {
8538 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8539 "peer=" MACSTR " freq=%d",
8540 MAC2STR(params.peer->p2p_device_addr),
8541 params.go_freq);
8542 }
8543 return 0;
8544 }
8545
8546 if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
8547 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
8548 MACSTR, MAC2STR(params.peer->p2p_device_addr));
8549 return 0;
8550 }
8551
8552 wpabuf_free(wpa_s->p2p_oob_dev_pw);
8553 wpa_s->p2p_oob_dev_pw = NULL;
8554
8555 if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
8556 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
8557 "received");
8558 return -1;
8559 }
8560
8561 id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
8562 wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
8563 wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
8564 params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8565 os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
8566 params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8567 wpa_s->p2p_peer_oob_pk_hash_known = 1;
8568
8569 if (tag) {
8570 if (id < 0x10) {
8571 wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
8572 "peer OOB Device Password Id %u", id);
8573 return -1;
8574 }
8575 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
8576 "Device Password Id %u", id);
8577 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
8578 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8579 params.oob_dev_pw_len -
8580 WPS_OOB_PUBKEY_HASH_LEN - 2);
8581 wpa_s->p2p_oob_dev_pw_id = id;
8582 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
8583 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8584 params.oob_dev_pw_len -
8585 WPS_OOB_PUBKEY_HASH_LEN - 2);
8586 if (wpa_s->p2p_oob_dev_pw == NULL)
8587 return -1;
8588
8589 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8590 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8591 &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8592 return -1;
8593 } else {
8594 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
8595 "without Device Password");
8596 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
8597 }
8598
8599 switch (params.next_step) {
8600 case NO_ACTION:
8601 case BOTH_GO:
8602 case PEER_CLIENT:
8603 /* already covered above */
8604 return 0;
8605 case JOIN_GROUP:
8606 return wpas_p2p_nfc_join_group(wpa_s, &params);
8607 case AUTH_JOIN:
8608 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
8609 case INIT_GO_NEG:
8610 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
8611 case RESP_GO_NEG:
8612 /* TODO: use own OOB Dev Pw */
8613 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
8614 }
8615
8616 return -1;
8617 }
8618
8619
8620 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
8621 const struct wpabuf *data, int forced_freq)
8622 {
8623 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8624 return -1;
8625
8626 return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
8627 }
8628
8629
8630 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
8631 const struct wpabuf *req,
8632 const struct wpabuf *sel, int forced_freq)
8633 {
8634 struct wpabuf *tmp;
8635 int ret;
8636
8637 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8638 return -1;
8639
8640 wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
8641
8642 wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
8643 wpabuf_head(req), wpabuf_len(req));
8644 wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
8645 wpabuf_head(sel), wpabuf_len(sel));
8646 if (forced_freq)
8647 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
8648 tmp = ndef_parse_p2p(init ? sel : req);
8649 if (tmp == NULL) {
8650 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
8651 return -1;
8652 }
8653
8654 ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
8655 forced_freq);
8656 wpabuf_free(tmp);
8657
8658 return ret;
8659 }
8660
8661
8662 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
8663 {
8664 const u8 *if_addr;
8665 int go_intent = wpa_s->conf->p2p_go_intent;
8666 struct wpa_supplicant *iface;
8667
8668 if (wpa_s->global->p2p == NULL)
8669 return -1;
8670
8671 if (!enabled) {
8672 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
8673 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
8674 {
8675 if (!iface->ap_iface)
8676 continue;
8677 hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
8678 }
8679 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
8680 0, NULL);
8681 if (wpa_s->p2p_nfc_tag_enabled)
8682 wpas_p2p_remove_pending_group_interface(wpa_s);
8683 wpa_s->p2p_nfc_tag_enabled = 0;
8684 return 0;
8685 }
8686
8687 if (wpa_s->global->p2p_disabled)
8688 return -1;
8689
8690 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
8691 wpa_s->conf->wps_nfc_dh_privkey == NULL ||
8692 wpa_s->conf->wps_nfc_dev_pw == NULL ||
8693 wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
8694 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
8695 "to allow static handover cases");
8696 return -1;
8697 }
8698
8699 wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
8700
8701 wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8702 wpabuf_free(wpa_s->p2p_oob_dev_pw);
8703 wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8704 if (wpa_s->p2p_oob_dev_pw == NULL)
8705 return -1;
8706 wpa_s->p2p_peer_oob_pk_hash_known = 0;
8707
8708 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
8709 wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
8710 /*
8711 * P2P Group Interface present and the command came on group
8712 * interface, so enable the token for the current interface.
8713 */
8714 wpa_s->create_p2p_iface = 0;
8715 } else {
8716 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
8717 }
8718
8719 if (wpa_s->create_p2p_iface) {
8720 enum wpa_driver_if_type iftype;
8721 /* Prepare to add a new interface for the group */
8722 iftype = WPA_IF_P2P_GROUP;
8723 if (go_intent == 15)
8724 iftype = WPA_IF_P2P_GO;
8725 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
8726 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
8727 "interface for the group");
8728 return -1;
8729 }
8730
8731 if_addr = wpa_s->pending_interface_addr;
8732 } else if (wpa_s->p2p_mgmt)
8733 if_addr = wpa_s->parent->own_addr;
8734 else
8735 if_addr = wpa_s->own_addr;
8736
8737 wpa_s->p2p_nfc_tag_enabled = enabled;
8738
8739 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8740 struct hostapd_data *hapd;
8741 if (iface->ap_iface == NULL)
8742 continue;
8743 hapd = iface->ap_iface->bss[0];
8744 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
8745 hapd->conf->wps_nfc_dh_pubkey =
8746 wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
8747 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
8748 hapd->conf->wps_nfc_dh_privkey =
8749 wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
8750 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
8751 hapd->conf->wps_nfc_dev_pw =
8752 wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8753 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8754
8755 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
8756 wpa_dbg(iface, MSG_DEBUG,
8757 "P2P: Failed to enable NFC Tag for GO");
8758 }
8759 }
8760 p2p_set_authorized_oob_dev_pw_id(
8761 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
8762 if_addr);
8763
8764 return 0;
8765 }
8766
8767 #endif /* CONFIG_WPS_NFC */
8768
8769
8770 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
8771 struct wpa_used_freq_data *freqs,
8772 unsigned int num)
8773 {
8774 u8 curr_chan, cand, chan;
8775 unsigned int i;
8776
8777 /*
8778 * If possible, optimize the Listen channel to be a channel that is
8779 * already used by one of the other interfaces.
8780 */
8781 if (!wpa_s->conf->p2p_optimize_listen_chan)
8782 return;
8783
8784 if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
8785 return;
8786
8787 curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
8788 for (i = 0, cand = 0; i < num; i++) {
8789 ieee80211_freq_to_chan(freqs[i].freq, &chan);
8790 if (curr_chan == chan) {
8791 cand = 0;
8792 break;
8793 }
8794
8795 if (chan == 1 || chan == 6 || chan == 11)
8796 cand = chan;
8797 }
8798
8799 if (cand) {
8800 wpa_dbg(wpa_s, MSG_DEBUG,
8801 "P2P: Update Listen channel to %u based on operating channel",
8802 cand);
8803 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
8804 }
8805 }
8806
8807
8808 static int wpas_p2p_move_go_csa(struct wpa_supplicant *wpa_s)
8809 {
8810 struct hostapd_config *conf;
8811 struct p2p_go_neg_results params;
8812 struct csa_settings csa_settings;
8813 struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8814 int old_freq = current_ssid->frequency;
8815 int ret;
8816
8817 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
8818 wpa_dbg(wpa_s, MSG_DEBUG, "CSA is not enabled");
8819 return -1;
8820 }
8821
8822 /*
8823 * TODO: This function may not always work correctly. For example,
8824 * when we have a running GO and a BSS on a DFS channel.
8825 */
8826 if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, NULL)) {
8827 wpa_dbg(wpa_s, MSG_DEBUG,
8828 "P2P CSA: Failed to select new frequency for GO");
8829 return -1;
8830 }
8831
8832 if (current_ssid->frequency == params.freq) {
8833 wpa_dbg(wpa_s, MSG_DEBUG,
8834 "P2P CSA: Selected same frequency - not moving GO");
8835 return 0;
8836 }
8837
8838 conf = hostapd_config_defaults();
8839 if (!conf) {
8840 wpa_dbg(wpa_s, MSG_DEBUG,
8841 "P2P CSA: Failed to allocate default config");
8842 return -1;
8843 }
8844
8845 current_ssid->frequency = params.freq;
8846 if (wpa_supplicant_conf_ap_ht(wpa_s, current_ssid, conf)) {
8847 wpa_dbg(wpa_s, MSG_DEBUG,
8848 "P2P CSA: Failed to create new GO config");
8849 ret = -1;
8850 goto out;
8851 }
8852
8853 if (conf->hw_mode != wpa_s->ap_iface->current_mode->mode) {
8854 wpa_dbg(wpa_s, MSG_DEBUG,
8855 "P2P CSA: CSA to a different band is not supported");
8856 ret = -1;
8857 goto out;
8858 }
8859
8860 os_memset(&csa_settings, 0, sizeof(csa_settings));
8861 csa_settings.cs_count = P2P_GO_CSA_COUNT;
8862 csa_settings.block_tx = P2P_GO_CSA_BLOCK_TX;
8863 csa_settings.freq_params.freq = params.freq;
8864 csa_settings.freq_params.sec_channel_offset = conf->secondary_channel;
8865 csa_settings.freq_params.ht_enabled = conf->ieee80211n;
8866 csa_settings.freq_params.bandwidth = conf->secondary_channel ? 40 : 20;
8867
8868 if (conf->ieee80211ac) {
8869 int freq1 = 0, freq2 = 0;
8870 u8 chan, opclass;
8871
8872 if (ieee80211_freq_to_channel_ext(params.freq,
8873 conf->secondary_channel,
8874 conf->vht_oper_chwidth,
8875 &opclass, &chan) ==
8876 NUM_HOSTAPD_MODES) {
8877 wpa_printf(MSG_ERROR, "P2P CSA: Bad freq");
8878 ret = -1;
8879 goto out;
8880 }
8881
8882 if (conf->vht_oper_centr_freq_seg0_idx)
8883 freq1 = ieee80211_chan_to_freq(
8884 NULL, opclass,
8885 conf->vht_oper_centr_freq_seg0_idx);
8886
8887 if (conf->vht_oper_centr_freq_seg1_idx)
8888 freq2 = ieee80211_chan_to_freq(
8889 NULL, opclass,
8890 conf->vht_oper_centr_freq_seg1_idx);
8891
8892 if (freq1 < 0 || freq2 < 0) {
8893 wpa_dbg(wpa_s, MSG_DEBUG,
8894 "P2P CSA: Selected invalid VHT center freqs");
8895 ret = -1;
8896 goto out;
8897 }
8898
8899 csa_settings.freq_params.vht_enabled = conf->ieee80211ac;
8900 csa_settings.freq_params.center_freq1 = freq1;
8901 csa_settings.freq_params.center_freq2 = freq2;
8902
8903 switch (conf->vht_oper_chwidth) {
8904 case VHT_CHANWIDTH_80MHZ:
8905 case VHT_CHANWIDTH_80P80MHZ:
8906 csa_settings.freq_params.bandwidth = 80;
8907 break;
8908 case VHT_CHANWIDTH_160MHZ:
8909 csa_settings.freq_params.bandwidth = 160;
8910 break;
8911 }
8912 }
8913
8914 ret = ap_switch_channel(wpa_s, &csa_settings);
8915 out:
8916 current_ssid->frequency = old_freq;
8917 hostapd_config_free(conf);
8918 return ret;
8919 }
8920
8921
8922 static void wpas_p2p_move_go_no_csa(struct wpa_supplicant *wpa_s)
8923 {
8924 struct p2p_go_neg_results params;
8925 struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8926
8927 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
8928
8929 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz",
8930 current_ssid->frequency);
8931
8932 /* Stop the AP functionality */
8933 /* TODO: Should do this in a way that does not indicated to possible
8934 * P2P Clients in the group that the group is terminated. */
8935 wpa_supplicant_ap_deinit(wpa_s);
8936
8937 /* Reselect the GO frequency */
8938 if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, NULL)) {
8939 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Failed to reselect freq");
8940 wpas_p2p_group_delete(wpa_s,
8941 P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8942 return;
8943 }
8944 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New freq selected for the GO (%u MHz)",
8945 params.freq);
8946
8947 if (params.freq &&
8948 !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
8949 wpa_printf(MSG_DEBUG,
8950 "P2P: Selected freq (%u MHz) is not valid for P2P",
8951 params.freq);
8952 wpas_p2p_group_delete(wpa_s,
8953 P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8954 return;
8955 }
8956
8957 /* Update the frequency */
8958 current_ssid->frequency = params.freq;
8959 wpa_s->connect_without_scan = current_ssid;
8960 wpa_s->reassociate = 1;
8961 wpa_s->disconnected = 0;
8962 wpa_supplicant_req_scan(wpa_s, 0, 0);
8963 }
8964
8965
8966 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx)
8967 {
8968 struct wpa_supplicant *wpa_s = eloop_ctx;
8969
8970 if (!wpa_s->ap_iface || !wpa_s->current_ssid)
8971 return;
8972
8973 wpas_p2p_go_update_common_freqs(wpa_s);
8974
8975 /* Do not move GO in the middle of a CSA */
8976 if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
8977 wpa_printf(MSG_DEBUG,
8978 "P2P: CSA is in progress - not moving GO");
8979 return;
8980 }
8981
8982 /*
8983 * First, try a channel switch flow. If it is not supported or fails,
8984 * take down the GO and bring it up again.
8985 */
8986 if (wpas_p2p_move_go_csa(wpa_s) < 0)
8987 wpas_p2p_move_go_no_csa(wpa_s);
8988 }
8989
8990
8991 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx)
8992 {
8993 struct wpa_supplicant *wpa_s = eloop_ctx;
8994 struct wpa_used_freq_data *freqs = NULL;
8995 unsigned int num = wpa_s->num_multichan_concurrent;
8996
8997 freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
8998 if (!freqs)
8999 return;
9000
9001 num = get_shared_radio_freqs_data(wpa_s, freqs, num);
9002
9003 /* Previous attempt to move a GO was not possible -- try again. */
9004 wpas_p2p_consider_moving_gos(wpa_s, freqs, num,
9005 WPAS_P2P_CHANNEL_UPDATE_ANY);
9006
9007 os_free(freqs);
9008 }
9009
9010
9011 /*
9012 * Consider moving a GO from its currently used frequency:
9013 * 1. It is possible that due to regulatory consideration the frequency
9014 * can no longer be used and there is a need to evacuate the GO.
9015 * 2. It is possible that due to MCC considerations, it would be preferable
9016 * to move the GO to a channel that is currently used by some other
9017 * station interface.
9018 *
9019 * In case a frequency that became invalid is once again valid, cancel a
9020 * previously initiated GO frequency change.
9021 */
9022 static void wpas_p2p_consider_moving_one_go(struct wpa_supplicant *wpa_s,
9023 struct wpa_used_freq_data *freqs,
9024 unsigned int num)
9025 {
9026 unsigned int i, invalid_freq = 0, policy_move = 0, flags = 0;
9027 unsigned int timeout;
9028 int freq;
9029
9030 wpas_p2p_go_update_common_freqs(wpa_s);
9031
9032 freq = wpa_s->current_ssid->frequency;
9033 for (i = 0, invalid_freq = 0; i < num; i++) {
9034 if (freqs[i].freq == freq) {
9035 flags = freqs[i].flags;
9036
9037 /* The channel is invalid, must change it */
9038 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
9039 wpa_dbg(wpa_s, MSG_DEBUG,
9040 "P2P: Freq=%d MHz no longer valid for GO",
9041 freq);
9042 invalid_freq = 1;
9043 }
9044 } else if (freqs[i].flags == 0) {
9045 /* Freq is not used by any other station interface */
9046 continue;
9047 } else if (!p2p_supported_freq(wpa_s->global->p2p,
9048 freqs[i].freq)) {
9049 /* Freq is not valid for P2P use cases */
9050 continue;
9051 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
9052 P2P_GO_FREQ_MOVE_SCM) {
9053 policy_move = 1;
9054 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
9055 P2P_GO_FREQ_MOVE_SCM_PEER_SUPPORTS &&
9056 wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9057 policy_move = 1;
9058 } else if ((wpa_s->conf->p2p_go_freq_change_policy ==
9059 P2P_GO_FREQ_MOVE_SCM_ECSA) &&
9060 wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9061 if (!p2p_get_group_num_members(wpa_s->p2p_group)) {
9062 policy_move = 1;
9063 } else if ((wpa_s->drv_flags &
9064 WPA_DRIVER_FLAGS_AP_CSA) &&
9065 wpas_p2p_go_clients_support_ecsa(wpa_s)) {
9066 u8 chan;
9067
9068 /*
9069 * We do not support CSA between bands, so move
9070 * GO only within the same band.
9071 */
9072 if (wpa_s->ap_iface->current_mode->mode ==
9073 ieee80211_freq_to_chan(freqs[i].freq,
9074 &chan))
9075 policy_move = 1;
9076 }
9077 }
9078 }
9079
9080 wpa_dbg(wpa_s, MSG_DEBUG,
9081 "P2P: GO move: invalid_freq=%u, policy_move=%u, flags=0x%X",
9082 invalid_freq, policy_move, flags);
9083
9084 /*
9085 * The channel is valid, or we are going to have a policy move, so
9086 * cancel timeout.
9087 */
9088 if (!invalid_freq || policy_move) {
9089 wpa_dbg(wpa_s, MSG_DEBUG,
9090 "P2P: Cancel a GO move from freq=%d MHz", freq);
9091 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9092
9093 if (wpas_p2p_in_progress(wpa_s)) {
9094 wpa_dbg(wpa_s, MSG_DEBUG,
9095 "P2P: GO move: policy CS is not allowed - setting timeout to re-consider GO move");
9096 eloop_cancel_timeout(wpas_p2p_reconsider_moving_go,
9097 wpa_s, NULL);
9098 eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9099 wpas_p2p_reconsider_moving_go,
9100 wpa_s, NULL);
9101 return;
9102 }
9103 }
9104
9105 if (!invalid_freq && (!policy_move || flags != 0)) {
9106 wpa_dbg(wpa_s, MSG_DEBUG,
9107 "P2P: Not initiating a GO frequency change");
9108 return;
9109 }
9110
9111 /*
9112 * Do not consider moving GO if it is in the middle of a CSA. When the
9113 * CSA is finished this flow should be retriggered.
9114 */
9115 if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
9116 wpa_dbg(wpa_s, MSG_DEBUG,
9117 "P2P: Not initiating a GO frequency change - CSA is in progress");
9118 return;
9119 }
9120
9121 if (invalid_freq && !wpas_p2p_disallowed_freq(wpa_s->global, freq))
9122 timeout = P2P_GO_FREQ_CHANGE_TIME;
9123 else
9124 timeout = 0;
9125
9126 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz in %d secs",
9127 freq, timeout);
9128 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9129 eloop_register_timeout(timeout, 0, wpas_p2p_move_go, wpa_s, NULL);
9130 }
9131
9132
9133 static void wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
9134 struct wpa_used_freq_data *freqs,
9135 unsigned int num,
9136 enum wpas_p2p_channel_update_trig trig)
9137 {
9138 struct wpa_supplicant *ifs;
9139
9140 eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, ELOOP_ALL_CTX,
9141 NULL);
9142
9143 /*
9144 * Travers all the radio interfaces, and for each GO interface, check
9145 * if there is a need to move the GO from the frequency it is using,
9146 * or in case the frequency is valid again, cancel the evacuation flow.
9147 */
9148 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
9149 radio_list) {
9150 if (ifs->current_ssid == NULL ||
9151 ifs->current_ssid->mode != WPAS_MODE_P2P_GO)
9152 continue;
9153
9154 /*
9155 * The GO was just started or completed channel switch, no need
9156 * to move it.
9157 */
9158 if (wpa_s == ifs &&
9159 (trig == WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE ||
9160 trig == WPAS_P2P_CHANNEL_UPDATE_CS)) {
9161 wpa_dbg(wpa_s, MSG_DEBUG,
9162 "P2P: GO move - schedule re-consideration");
9163 eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9164 wpas_p2p_reconsider_moving_go,
9165 wpa_s, NULL);
9166 continue;
9167 }
9168
9169 wpas_p2p_consider_moving_one_go(ifs, freqs, num);
9170 }
9171 }
9172
9173
9174 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
9175 {
9176 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
9177 return;
9178
9179 wpas_p2p_update_channel_list(wpa_s,
9180 WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE);
9181 }
9182
9183
9184 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
9185 {
9186 if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
9187 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
9188 "the management interface is being removed");
9189 wpas_p2p_deinit_global(wpa_s->global);
9190 }
9191 }
9192
9193
9194 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
9195 {
9196 if (wpa_s->ap_iface->bss)
9197 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
9198 wpas_p2p_group_deinit(wpa_s);
9199 }
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