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P2P: Complete group formation on client data connection
[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52 * it is currently using, but is no longer valid for P2P use cases.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57 * Defines CSA parameters which are used when GO evacuates the no longer valid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
355 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
356 return -1;
357
358 if (wpa_s->p2p_scan_work) {
359 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending");
360 return -1;
361 }
362
363 params = os_zalloc(sizeof(*params));
364 if (params == NULL)
365 return -1;
366
367 /* P2P Wildcard SSID */
368 params->num_ssids = 1;
369 n = os_malloc(P2P_WILDCARD_SSID_LEN);
370 if (n == NULL)
371 goto fail;
372 os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
373 params->ssids[0].ssid = n;
374 params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
375
376 wpa_s->wps->dev.p2p = 1;
377 wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
378 wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
379 num_req_dev_types, req_dev_types);
380 if (wps_ie == NULL)
381 goto fail;
382
383 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
384 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
385 if (ies == NULL) {
386 wpabuf_free(wps_ie);
387 goto fail;
388 }
389 wpabuf_put_buf(ies, wps_ie);
390 wpabuf_free(wps_ie);
391
392 p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
393
394 params->p2p_probe = 1;
395 n = os_malloc(wpabuf_len(ies));
396 if (n == NULL) {
397 wpabuf_free(ies);
398 goto fail;
399 }
400 os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies));
401 params->extra_ies = n;
402 params->extra_ies_len = wpabuf_len(ies);
403 wpabuf_free(ies);
404
405 switch (type) {
406 case P2P_SCAN_SOCIAL:
407 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 1,
408 sizeof(int));
409 if (params->freqs == NULL)
410 goto fail;
411 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
412 if (wpas_p2p_search_social_channel(
413 wpa_s, social_channels_freq[i]))
414 params->freqs[num_channels++] =
415 social_channels_freq[i];
416 }
417 params->freqs[num_channels++] = 0;
418 break;
419 case P2P_SCAN_FULL:
420 break;
421 case P2P_SCAN_SPECIFIC:
422 params->freqs = os_calloc(2, sizeof(int));
423 if (params->freqs == NULL)
424 goto fail;
425 params->freqs[0] = freq;
426 params->freqs[1] = 0;
427 break;
428 case P2P_SCAN_SOCIAL_PLUS_ONE:
429 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 2,
430 sizeof(int));
431 if (params->freqs == NULL)
432 goto fail;
433 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
434 if (wpas_p2p_search_social_channel(
435 wpa_s, social_channels_freq[i]))
436 params->freqs[num_channels++] =
437 social_channels_freq[i];
438 }
439 if (p2p_supported_freq(wpa_s->global->p2p, freq))
440 params->freqs[num_channels++] = freq;
441 params->freqs[num_channels++] = 0;
442 break;
443 }
444
445 radio_remove_works(wpa_s, "p2p-scan", 0);
446 if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb,
447 params) < 0)
448 goto fail;
449 return 0;
450
451 fail:
452 wpa_scan_free_params(params);
453 return -1;
454 }
455
456
457 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
458 {
459 switch (p2p_group_interface) {
460 case P2P_GROUP_INTERFACE_PENDING:
461 return WPA_IF_P2P_GROUP;
462 case P2P_GROUP_INTERFACE_GO:
463 return WPA_IF_P2P_GO;
464 case P2P_GROUP_INTERFACE_CLIENT:
465 return WPA_IF_P2P_CLIENT;
466 }
467
468 return WPA_IF_P2P_GROUP;
469 }
470
471
472 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
473 const u8 *ssid,
474 size_t ssid_len, int *go)
475 {
476 struct wpa_ssid *s;
477
478 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
479 for (s = wpa_s->conf->ssid; s; s = s->next) {
480 if (s->disabled != 0 || !s->p2p_group ||
481 s->ssid_len != ssid_len ||
482 os_memcmp(ssid, s->ssid, ssid_len) != 0)
483 continue;
484 if (s->mode == WPAS_MODE_P2P_GO &&
485 s != wpa_s->current_ssid)
486 continue;
487 if (go)
488 *go = s->mode == WPAS_MODE_P2P_GO;
489 return wpa_s;
490 }
491 }
492
493 return NULL;
494 }
495
496
497 static void run_wpas_p2p_disconnect(void *eloop_ctx, void *timeout_ctx)
498 {
499 struct wpa_supplicant *wpa_s = eloop_ctx;
500 wpa_printf(MSG_DEBUG,
501 "P2P: Complete previously requested removal of %s",
502 wpa_s->ifname);
503 wpas_p2p_disconnect(wpa_s);
504 }
505
506
507 static int wpas_p2p_disconnect_safely(struct wpa_supplicant *wpa_s,
508 struct wpa_supplicant *calling_wpa_s)
509 {
510 if (calling_wpa_s == wpa_s && wpa_s &&
511 wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
512 /*
513 * The calling wpa_s instance is going to be removed. Do that
514 * from an eloop callback to keep the instance available until
515 * the caller has returned. This my be needed, e.g., to provide
516 * control interface responses on the per-interface socket.
517 */
518 if (eloop_register_timeout(0, 0, run_wpas_p2p_disconnect,
519 wpa_s, NULL) < 0)
520 return -1;
521 return 0;
522 }
523
524 return wpas_p2p_disconnect(wpa_s);
525 }
526
527
528 /* Determine total number of clients in active groups where we are the GO */
529 static unsigned int p2p_group_go_member_count(struct wpa_supplicant *wpa_s)
530 {
531 unsigned int count = 0;
532 struct wpa_ssid *s;
533
534 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
535 for (s = wpa_s->conf->ssid; s; s = s->next) {
536 wpa_printf(MSG_DEBUG,
537 "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d",
538 wpa_s, s, s->disabled, s->p2p_group,
539 s->mode);
540 if (!s->disabled && s->p2p_group &&
541 s->mode == WPAS_MODE_P2P_GO) {
542 count += p2p_get_group_num_members(
543 wpa_s->p2p_group);
544 }
545 }
546 }
547
548 return count;
549 }
550
551
552 static unsigned int p2p_is_active_persistent_group(struct wpa_supplicant *wpa_s)
553 {
554 return !wpa_s->p2p_mgmt && wpa_s->current_ssid &&
555 !wpa_s->current_ssid->disabled &&
556 wpa_s->current_ssid->p2p_group &&
557 wpa_s->current_ssid->p2p_persistent_group;
558 }
559
560
561 static unsigned int p2p_is_active_persistent_go(struct wpa_supplicant *wpa_s)
562 {
563 return p2p_is_active_persistent_group(wpa_s) &&
564 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO;
565 }
566
567
568 /* Find an interface for a P2P group where we are the GO */
569 static struct wpa_supplicant *
570 wpas_p2p_get_go_group(struct wpa_supplicant *wpa_s)
571 {
572 struct wpa_supplicant *save = NULL;
573
574 if (!wpa_s)
575 return NULL;
576
577 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
578 if (!p2p_is_active_persistent_go(wpa_s))
579 continue;
580
581 /* Prefer a group with connected clients */
582 if (p2p_get_group_num_members(wpa_s->p2p_group))
583 return wpa_s;
584 save = wpa_s;
585 }
586
587 /* No group with connected clients, so pick the one without (if any) */
588 return save;
589 }
590
591
592 static unsigned int p2p_is_active_persistent_cli(struct wpa_supplicant *wpa_s)
593 {
594 return p2p_is_active_persistent_group(wpa_s) &&
595 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
596 }
597
598
599 /* Find an interface for a P2P group where we are the P2P Client */
600 static struct wpa_supplicant *
601 wpas_p2p_get_cli_group(struct wpa_supplicant *wpa_s)
602 {
603 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
604 if (p2p_is_active_persistent_cli(wpa_s))
605 return wpa_s;
606 }
607
608 return NULL;
609 }
610
611
612 /* Find a persistent group where we are the GO */
613 static struct wpa_ssid *
614 wpas_p2p_get_persistent_go(struct wpa_supplicant *wpa_s)
615 {
616 struct wpa_ssid *s;
617
618 for (s = wpa_s->conf->ssid; s; s = s->next) {
619 if (s->disabled == 2 && s->mode == WPAS_MODE_P2P_GO)
620 return s;
621 }
622
623 return NULL;
624 }
625
626
627 static u8 p2ps_group_capability(void *ctx, u8 incoming, u8 role,
628 unsigned int *force_freq,
629 unsigned int *pref_freq)
630 {
631 struct wpa_supplicant *wpa_s = ctx;
632 struct wpa_ssid *s;
633 u8 conncap = P2PS_SETUP_NONE;
634 unsigned int owned_members = 0;
635 struct wpa_supplicant *go_wpa_s, *cli_wpa_s;
636 struct wpa_ssid *persistent_go;
637 int p2p_no_group_iface;
638 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
639
640 wpa_printf(MSG_DEBUG, "P2P: Conncap - in:%d role:%d", incoming, role);
641
642 if (force_freq)
643 *force_freq = 0;
644 if (pref_freq)
645 *pref_freq = 0;
646
647 size = P2P_MAX_PREF_CHANNELS;
648 if (force_freq && pref_freq &&
649 !wpas_p2p_setup_freqs(wpa_s, 0, (int *) force_freq,
650 (int *) pref_freq, 0, pref_freq_list, &size))
651 wpas_p2p_set_own_freq_preference(wpa_s,
652 *force_freq ? *force_freq :
653 *pref_freq);
654
655 /*
656 * For non-concurrent capable devices:
657 * If persistent_go, then no new.
658 * If GO, then no client.
659 * If client, then no GO.
660 */
661 go_wpa_s = wpas_p2p_get_go_group(wpa_s);
662 if (go_wpa_s)
663 owned_members = p2p_get_group_num_members(go_wpa_s->p2p_group);
664 persistent_go = wpas_p2p_get_persistent_go(wpa_s);
665 p2p_no_group_iface = !wpas_p2p_create_iface(wpa_s);
666 cli_wpa_s = wpas_p2p_get_cli_group(wpa_s);
667
668 wpa_printf(MSG_DEBUG,
669 "P2P: GO(iface)=%p members=%u CLI(iface)=%p persistent(ssid)=%p",
670 go_wpa_s, owned_members, cli_wpa_s, persistent_go);
671
672 /* If not concurrent, restrict our choices */
673 if (p2p_no_group_iface) {
674 wpa_printf(MSG_DEBUG, "P2P: p2p_no_group_iface");
675
676 if (cli_wpa_s)
677 return P2PS_SETUP_NONE;
678
679 if (go_wpa_s) {
680 if (role == P2PS_SETUP_CLIENT ||
681 incoming == P2PS_SETUP_GROUP_OWNER ||
682 p2p_client_limit_reached(go_wpa_s->p2p_group))
683 return P2PS_SETUP_NONE;
684
685 return P2PS_SETUP_GROUP_OWNER;
686 }
687
688 if (persistent_go) {
689 if (role == P2PS_SETUP_NONE || role == P2PS_SETUP_NEW) {
690 if (!incoming)
691 return P2PS_SETUP_GROUP_OWNER |
692 P2PS_SETUP_CLIENT;
693 if (incoming == P2PS_SETUP_NEW) {
694 u8 r;
695
696 if (os_get_random(&r, sizeof(r)) < 0 ||
697 (r & 1))
698 return P2PS_SETUP_CLIENT;
699 return P2PS_SETUP_GROUP_OWNER;
700 }
701 }
702 }
703 }
704
705 /* If a required role has been specified, handle it here */
706 if (role && role != P2PS_SETUP_NEW) {
707 switch (incoming) {
708 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
709 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
710 /*
711 * Peer has an active GO, so if the role allows it and
712 * we do not have any active roles, become client.
713 */
714 if ((role & P2PS_SETUP_CLIENT) && !go_wpa_s &&
715 !cli_wpa_s)
716 return P2PS_SETUP_CLIENT;
717
718 /* fall through */
719
720 case P2PS_SETUP_NONE:
721 case P2PS_SETUP_NEW:
722 conncap = role;
723 goto grp_owner;
724
725 case P2PS_SETUP_GROUP_OWNER:
726 /*
727 * Must be a complimentary role - cannot be a client to
728 * more than one peer.
729 */
730 if (incoming == role || cli_wpa_s)
731 return P2PS_SETUP_NONE;
732
733 return P2PS_SETUP_CLIENT;
734
735 case P2PS_SETUP_CLIENT:
736 /* Must be a complimentary role */
737 if (incoming != role) {
738 conncap = P2PS_SETUP_GROUP_OWNER;
739 goto grp_owner;
740 }
741
742 default:
743 return P2PS_SETUP_NONE;
744 }
745 }
746
747 /*
748 * For now, we only will support ownership of one group, and being a
749 * client of one group. Therefore, if we have either an existing GO
750 * group, or an existing client group, we will not do a new GO
751 * negotiation, but rather try to re-use the existing groups.
752 */
753 switch (incoming) {
754 case P2PS_SETUP_NONE:
755 case P2PS_SETUP_NEW:
756 if (cli_wpa_s)
757 conncap = P2PS_SETUP_GROUP_OWNER;
758 else if (!owned_members)
759 conncap = P2PS_SETUP_NEW;
760 else if (incoming == P2PS_SETUP_NONE)
761 conncap = P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT;
762 else
763 conncap = P2PS_SETUP_CLIENT;
764 break;
765
766 case P2PS_SETUP_CLIENT:
767 conncap = P2PS_SETUP_GROUP_OWNER;
768 break;
769
770 case P2PS_SETUP_GROUP_OWNER:
771 if (!cli_wpa_s)
772 conncap = P2PS_SETUP_CLIENT;
773 break;
774
775 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
776 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
777 /*
778 * Peer has an active GO, so if the role allows it and
779 * we do not have any active roles, become client.
780 */
781 if ((role & P2PS_SETUP_CLIENT) && !go_wpa_s && !cli_wpa_s)
782 return P2PS_SETUP_CLIENT;
783
784 if (cli_wpa_s)
785 conncap = P2PS_SETUP_GROUP_OWNER;
786 else {
787 u8 r;
788
789 if (os_get_random(&r, sizeof(r)) < 0 ||
790 (r & 1))
791 conncap = P2PS_SETUP_CLIENT;
792 else
793 conncap = P2PS_SETUP_GROUP_OWNER;
794 }
795 break;
796
797 default:
798 return P2PS_SETUP_NONE;
799 }
800
801 grp_owner:
802 if ((conncap & P2PS_SETUP_GROUP_OWNER) ||
803 (!incoming && (conncap & P2PS_SETUP_NEW))) {
804 if (go_wpa_s && p2p_client_limit_reached(go_wpa_s->p2p_group))
805 conncap &= ~P2PS_SETUP_GROUP_OWNER;
806
807 s = wpas_p2p_get_persistent_go(wpa_s);
808 if (!s && !go_wpa_s && p2p_no_group_iface) {
809 p2p_set_intended_addr(wpa_s->global->p2p,
810 wpa_s->own_addr);
811 } else if (!s && !go_wpa_s) {
812 if (wpas_p2p_add_group_interface(wpa_s,
813 WPA_IF_P2P_GO) < 0) {
814 wpa_printf(MSG_ERROR,
815 "P2P: Failed to allocate a new interface for the group");
816 return P2PS_SETUP_NONE;
817 }
818 wpa_s->global->pending_group_iface_for_p2ps = 1;
819 p2p_set_intended_addr(wpa_s->global->p2p,
820 wpa_s->pending_interface_addr);
821 }
822 }
823
824 return conncap;
825 }
826
827
828 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
829 enum p2p_group_removal_reason removal_reason)
830 {
831 struct wpa_ssid *ssid;
832 char *gtype;
833 const char *reason;
834
835 ssid = wpa_s->current_ssid;
836 if (ssid == NULL) {
837 /*
838 * The current SSID was not known, but there may still be a
839 * pending P2P group interface waiting for provisioning or a
840 * P2P group that is trying to reconnect.
841 */
842 ssid = wpa_s->conf->ssid;
843 while (ssid) {
844 if (ssid->p2p_group && ssid->disabled != 2)
845 break;
846 ssid = ssid->next;
847 }
848 if (ssid == NULL &&
849 wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
850 {
851 wpa_printf(MSG_ERROR, "P2P: P2P group interface "
852 "not found");
853 return -1;
854 }
855 }
856 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
857 gtype = "GO";
858 else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
859 (ssid && ssid->mode == WPAS_MODE_INFRA)) {
860 wpa_s->reassociate = 0;
861 wpa_s->disconnected = 1;
862 gtype = "client";
863 } else
864 gtype = "GO";
865
866 if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
867 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
868
869 if (os_strcmp(gtype, "client") == 0) {
870 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
871 if (eloop_is_timeout_registered(wpas_p2p_psk_failure_removal,
872 wpa_s, NULL)) {
873 wpa_printf(MSG_DEBUG,
874 "P2P: PSK failure removal was scheduled, so use PSK failure as reason for group removal");
875 removal_reason = P2P_GROUP_REMOVAL_PSK_FAILURE;
876 eloop_cancel_timeout(wpas_p2p_psk_failure_removal,
877 wpa_s, NULL);
878 }
879 }
880
881 if (wpa_s->cross_connect_in_use) {
882 wpa_s->cross_connect_in_use = 0;
883 wpa_msg_global(wpa_s->parent, MSG_INFO,
884 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
885 wpa_s->ifname, wpa_s->cross_connect_uplink);
886 }
887 switch (removal_reason) {
888 case P2P_GROUP_REMOVAL_REQUESTED:
889 reason = " reason=REQUESTED";
890 break;
891 case P2P_GROUP_REMOVAL_FORMATION_FAILED:
892 reason = " reason=FORMATION_FAILED";
893 break;
894 case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
895 reason = " reason=IDLE";
896 break;
897 case P2P_GROUP_REMOVAL_UNAVAILABLE:
898 reason = " reason=UNAVAILABLE";
899 break;
900 case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
901 reason = " reason=GO_ENDING_SESSION";
902 break;
903 case P2P_GROUP_REMOVAL_PSK_FAILURE:
904 reason = " reason=PSK_FAILURE";
905 break;
906 case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
907 reason = " reason=FREQ_CONFLICT";
908 break;
909 default:
910 reason = "";
911 break;
912 }
913 if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
914 wpa_msg_global(wpa_s->parent, MSG_INFO,
915 P2P_EVENT_GROUP_REMOVED "%s %s%s",
916 wpa_s->ifname, gtype, reason);
917 }
918
919 if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
920 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
921 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
922 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
923 if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
924 wpa_s->parent, NULL) > 0) {
925 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
926 "timeout");
927 wpa_s->p2p_in_provisioning = 0;
928 wpas_p2p_group_formation_failed(wpa_s, 1);
929 }
930
931 wpa_s->p2p_in_invitation = 0;
932 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
933 eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, wpa_s, NULL);
934
935 /*
936 * Make sure wait for the first client does not remain active after the
937 * group has been removed.
938 */
939 wpa_s->global->p2p_go_wait_client.sec = 0;
940
941 if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
942 struct wpa_global *global;
943 char *ifname;
944 enum wpa_driver_if_type type;
945 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
946 wpa_s->ifname);
947 global = wpa_s->global;
948 ifname = os_strdup(wpa_s->ifname);
949 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
950 eloop_cancel_timeout(run_wpas_p2p_disconnect, wpa_s, NULL);
951 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
952 wpa_s = global->ifaces;
953 if (wpa_s && ifname)
954 wpa_drv_if_remove(wpa_s, type, ifname);
955 os_free(ifname);
956 return 1;
957 }
958
959 if (!wpa_s->p2p_go_group_formation_completed) {
960 wpa_s->global->p2p_group_formation = NULL;
961 wpa_s->p2p_in_provisioning = 0;
962 }
963
964 wpa_s->show_group_started = 0;
965 os_free(wpa_s->go_params);
966 wpa_s->go_params = NULL;
967
968 os_free(wpa_s->p2p_group_common_freqs);
969 wpa_s->p2p_group_common_freqs = NULL;
970 wpa_s->p2p_group_common_freqs_num = 0;
971
972 wpa_s->waiting_presence_resp = 0;
973
974 wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
975 if (ssid && (ssid->p2p_group ||
976 ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
977 (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
978 int id = ssid->id;
979 if (ssid == wpa_s->current_ssid) {
980 wpa_sm_set_config(wpa_s->wpa, NULL);
981 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
982 wpa_s->current_ssid = NULL;
983 }
984 /*
985 * Networks objects created during any P2P activities are not
986 * exposed out as they might/will confuse certain non-P2P aware
987 * applications since these network objects won't behave like
988 * regular ones.
989 *
990 * Likewise, we don't send out network removed signals for such
991 * network objects.
992 */
993 wpa_config_remove_network(wpa_s->conf, id);
994 wpa_supplicant_clear_status(wpa_s);
995 wpa_supplicant_cancel_sched_scan(wpa_s);
996 } else {
997 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
998 "found");
999 }
1000 if (wpa_s->ap_iface)
1001 wpa_supplicant_ap_deinit(wpa_s);
1002 else
1003 wpa_drv_deinit_p2p_cli(wpa_s);
1004
1005 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1006
1007 return 0;
1008 }
1009
1010
1011 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
1012 u8 *go_dev_addr,
1013 const u8 *ssid, size_t ssid_len)
1014 {
1015 struct wpa_bss *bss;
1016 const u8 *bssid;
1017 struct wpabuf *p2p;
1018 u8 group_capab;
1019 const u8 *addr;
1020
1021 if (wpa_s->go_params)
1022 bssid = wpa_s->go_params->peer_interface_addr;
1023 else
1024 bssid = wpa_s->bssid;
1025
1026 bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
1027 if (bss == NULL && wpa_s->go_params &&
1028 !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
1029 bss = wpa_bss_get_p2p_dev_addr(
1030 wpa_s, wpa_s->go_params->peer_device_addr);
1031 if (bss == NULL) {
1032 u8 iface_addr[ETH_ALEN];
1033 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
1034 iface_addr) == 0)
1035 bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
1036 }
1037 if (bss == NULL) {
1038 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1039 "group is persistent - BSS " MACSTR " not found",
1040 MAC2STR(bssid));
1041 return 0;
1042 }
1043
1044 p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
1045 if (p2p == NULL)
1046 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
1047 P2P_IE_VENDOR_TYPE);
1048 if (p2p == NULL) {
1049 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1050 "group is persistent - BSS " MACSTR
1051 " did not include P2P IE", MAC2STR(bssid));
1052 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
1053 (u8 *) (bss + 1), bss->ie_len);
1054 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
1055 ((u8 *) bss + 1) + bss->ie_len,
1056 bss->beacon_ie_len);
1057 return 0;
1058 }
1059
1060 group_capab = p2p_get_group_capab(p2p);
1061 addr = p2p_get_go_dev_addr(p2p);
1062 wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
1063 "group_capab=0x%x", group_capab);
1064 if (addr) {
1065 os_memcpy(go_dev_addr, addr, ETH_ALEN);
1066 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
1067 MAC2STR(addr));
1068 } else
1069 os_memset(go_dev_addr, 0, ETH_ALEN);
1070 wpabuf_free(p2p);
1071
1072 wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
1073 "go_dev_addr=" MACSTR,
1074 MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
1075
1076 return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
1077 }
1078
1079
1080 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
1081 struct wpa_ssid *ssid,
1082 const u8 *go_dev_addr)
1083 {
1084 struct wpa_ssid *s;
1085 int changed = 0;
1086
1087 wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
1088 "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
1089 for (s = wpa_s->conf->ssid; s; s = s->next) {
1090 if (s->disabled == 2 &&
1091 os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
1092 s->ssid_len == ssid->ssid_len &&
1093 os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
1094 break;
1095 }
1096
1097 if (s) {
1098 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
1099 "entry");
1100 if (ssid->passphrase && !s->passphrase)
1101 changed = 1;
1102 else if (ssid->passphrase && s->passphrase &&
1103 os_strcmp(ssid->passphrase, s->passphrase) != 0)
1104 changed = 1;
1105 } else {
1106 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
1107 "entry");
1108 changed = 1;
1109 s = wpa_config_add_network(wpa_s->conf);
1110 if (s == NULL)
1111 return -1;
1112
1113 /*
1114 * Instead of network_added we emit persistent_group_added
1115 * notification. Also to keep the defense checks in
1116 * persistent_group obj registration method, we set the
1117 * relevant flags in s to designate it as a persistent group.
1118 */
1119 s->p2p_group = 1;
1120 s->p2p_persistent_group = 1;
1121 wpas_notify_persistent_group_added(wpa_s, s);
1122 wpa_config_set_network_defaults(s);
1123 }
1124
1125 s->p2p_group = 1;
1126 s->p2p_persistent_group = 1;
1127 s->disabled = 2;
1128 s->bssid_set = 1;
1129 os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
1130 s->mode = ssid->mode;
1131 s->auth_alg = WPA_AUTH_ALG_OPEN;
1132 s->key_mgmt = WPA_KEY_MGMT_PSK;
1133 s->proto = WPA_PROTO_RSN;
1134 s->pairwise_cipher = WPA_CIPHER_CCMP;
1135 s->export_keys = 1;
1136 if (ssid->passphrase) {
1137 os_free(s->passphrase);
1138 s->passphrase = os_strdup(ssid->passphrase);
1139 }
1140 if (ssid->psk_set) {
1141 s->psk_set = 1;
1142 os_memcpy(s->psk, ssid->psk, 32);
1143 }
1144 if (s->passphrase && !s->psk_set)
1145 wpa_config_update_psk(s);
1146 if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
1147 os_free(s->ssid);
1148 s->ssid = os_malloc(ssid->ssid_len);
1149 }
1150 if (s->ssid) {
1151 s->ssid_len = ssid->ssid_len;
1152 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
1153 }
1154 if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
1155 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
1156 wpa_s->global->add_psk = NULL;
1157 changed = 1;
1158 }
1159
1160 if (changed && wpa_s->conf->update_config &&
1161 wpa_config_write(wpa_s->confname, wpa_s->conf)) {
1162 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1163 }
1164
1165 return s->id;
1166 }
1167
1168
1169 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
1170 const u8 *addr)
1171 {
1172 struct wpa_ssid *ssid, *s;
1173 u8 *n;
1174 size_t i;
1175 int found = 0;
1176 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
1177
1178 ssid = wpa_s->current_ssid;
1179 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
1180 !ssid->p2p_persistent_group)
1181 return;
1182
1183 for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
1184 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
1185 continue;
1186
1187 if (s->ssid_len == ssid->ssid_len &&
1188 os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
1189 break;
1190 }
1191
1192 if (s == NULL)
1193 return;
1194
1195 for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
1196 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, addr,
1197 ETH_ALEN) != 0)
1198 continue;
1199
1200 if (i == s->num_p2p_clients - 1)
1201 return; /* already the most recent entry */
1202
1203 /* move the entry to mark it most recent */
1204 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
1205 s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
1206 (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
1207 os_memcpy(s->p2p_client_list +
1208 (s->num_p2p_clients - 1) * 2 * ETH_ALEN, addr,
1209 ETH_ALEN);
1210 os_memset(s->p2p_client_list +
1211 (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1212 0xff, ETH_ALEN);
1213 found = 1;
1214 break;
1215 }
1216
1217 if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
1218 n = os_realloc_array(s->p2p_client_list,
1219 s->num_p2p_clients + 1, 2 * ETH_ALEN);
1220 if (n == NULL)
1221 return;
1222 os_memcpy(n + s->num_p2p_clients * 2 * ETH_ALEN, addr,
1223 ETH_ALEN);
1224 os_memset(n + s->num_p2p_clients * 2 * ETH_ALEN + ETH_ALEN,
1225 0xff, ETH_ALEN);
1226 s->p2p_client_list = n;
1227 s->num_p2p_clients++;
1228 } else if (!found && s->p2p_client_list) {
1229 /* Not enough room for an additional entry - drop the oldest
1230 * entry */
1231 os_memmove(s->p2p_client_list,
1232 s->p2p_client_list + 2 * ETH_ALEN,
1233 (s->num_p2p_clients - 1) * 2 * ETH_ALEN);
1234 os_memcpy(s->p2p_client_list +
1235 (s->num_p2p_clients - 1) * 2 * ETH_ALEN,
1236 addr, ETH_ALEN);
1237 os_memset(s->p2p_client_list +
1238 (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1239 0xff, ETH_ALEN);
1240 }
1241
1242 if (p2p_wpa_s->conf->update_config &&
1243 wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
1244 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1245 }
1246
1247
1248 static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s,
1249 int go, struct wpa_ssid *ssid, int freq,
1250 const u8 *psk, const char *passphrase,
1251 const u8 *go_dev_addr, int persistent,
1252 const char *extra)
1253 {
1254 const char *ssid_txt;
1255 char psk_txt[65];
1256
1257 if (psk)
1258 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32);
1259 else
1260 psk_txt[0] = '\0';
1261
1262 if (ssid)
1263 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
1264 else
1265 ssid_txt = "";
1266
1267 if (passphrase && passphrase[0] == '\0')
1268 passphrase = NULL;
1269
1270 /*
1271 * Include PSK/passphrase only in the control interface message and
1272 * leave it out from the debug log entry.
1273 */
1274 wpa_msg_global_ctrl(wpa_s->parent, MSG_INFO,
1275 P2P_EVENT_GROUP_STARTED
1276 "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr="
1277 MACSTR "%s%s",
1278 wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1279 psk ? " psk=" : "", psk_txt,
1280 passphrase ? " passphrase=\"" : "",
1281 passphrase ? passphrase : "",
1282 passphrase ? "\"" : "",
1283 MAC2STR(go_dev_addr),
1284 persistent ? " [PERSISTENT]" : "", extra);
1285 wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED
1286 "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s",
1287 wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1288 MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "",
1289 extra);
1290 }
1291
1292
1293 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
1294 int success, int already_deleted)
1295 {
1296 struct wpa_ssid *ssid;
1297 int client;
1298 int persistent;
1299 u8 go_dev_addr[ETH_ALEN];
1300 int network_id = -1;
1301
1302 /*
1303 * This callback is likely called for the main interface. Update wpa_s
1304 * to use the group interface if a new interface was created for the
1305 * group.
1306 */
1307 if (wpa_s->global->p2p_group_formation)
1308 wpa_s = wpa_s->global->p2p_group_formation;
1309 if (wpa_s->p2p_go_group_formation_completed) {
1310 wpa_s->global->p2p_group_formation = NULL;
1311 wpa_s->p2p_in_provisioning = 0;
1312 }
1313 wpa_s->p2p_in_invitation = 0;
1314 wpa_s->group_formation_reported = 1;
1315
1316 if (!success) {
1317 wpa_msg_global(wpa_s->parent, MSG_INFO,
1318 P2P_EVENT_GROUP_FORMATION_FAILURE);
1319 wpas_notify_p2p_group_formation_failure(wpa_s, "");
1320 if (already_deleted)
1321 return;
1322 wpas_p2p_group_delete(wpa_s,
1323 P2P_GROUP_REMOVAL_FORMATION_FAILED);
1324 return;
1325 }
1326
1327 wpa_msg_global(wpa_s->parent, MSG_INFO,
1328 P2P_EVENT_GROUP_FORMATION_SUCCESS);
1329
1330 ssid = wpa_s->current_ssid;
1331 if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1332 ssid->mode = WPAS_MODE_P2P_GO;
1333 p2p_group_notif_formation_done(wpa_s->p2p_group);
1334 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
1335 }
1336
1337 persistent = 0;
1338 if (ssid) {
1339 client = ssid->mode == WPAS_MODE_INFRA;
1340 if (ssid->mode == WPAS_MODE_P2P_GO) {
1341 persistent = ssid->p2p_persistent_group;
1342 os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
1343 ETH_ALEN);
1344 } else
1345 persistent = wpas_p2p_persistent_group(wpa_s,
1346 go_dev_addr,
1347 ssid->ssid,
1348 ssid->ssid_len);
1349 } else {
1350 client = wpa_s->p2p_group_interface ==
1351 P2P_GROUP_INTERFACE_CLIENT;
1352 os_memset(go_dev_addr, 0, ETH_ALEN);
1353 }
1354
1355 wpa_s->show_group_started = 0;
1356 if (client) {
1357 /*
1358 * Indicate event only after successfully completed 4-way
1359 * handshake, i.e., when the interface is ready for data
1360 * packets.
1361 */
1362 wpa_s->show_group_started = 1;
1363 } else {
1364 wpas_p2p_group_started(wpa_s, 1, ssid,
1365 ssid ? ssid->frequency : 0,
1366 ssid && ssid->passphrase == NULL &&
1367 ssid->psk_set ? ssid->psk : NULL,
1368 ssid ? ssid->passphrase : NULL,
1369 go_dev_addr, persistent, "");
1370 wpas_p2p_cross_connect_setup(wpa_s);
1371 wpas_p2p_set_group_idle_timeout(wpa_s);
1372 }
1373
1374 if (persistent)
1375 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
1376 ssid, go_dev_addr);
1377 else {
1378 os_free(wpa_s->global->add_psk);
1379 wpa_s->global->add_psk = NULL;
1380 }
1381 if (network_id < 0 && ssid)
1382 network_id = ssid->id;
1383 if (!client) {
1384 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1385 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1386 }
1387 }
1388
1389
1390 struct send_action_work {
1391 unsigned int freq;
1392 u8 dst[ETH_ALEN];
1393 u8 src[ETH_ALEN];
1394 u8 bssid[ETH_ALEN];
1395 size_t len;
1396 unsigned int wait_time;
1397 u8 buf[0];
1398 };
1399
1400
1401 static void wpas_p2p_free_send_action_work(struct wpa_supplicant *wpa_s)
1402 {
1403 struct send_action_work *awork = wpa_s->p2p_send_action_work->ctx;
1404
1405 wpa_printf(MSG_DEBUG,
1406 "P2P: Free Action frame radio work @%p (freq=%u dst="
1407 MACSTR " src=" MACSTR " bssid=" MACSTR " wait_time=%u)",
1408 wpa_s->p2p_send_action_work, awork->freq,
1409 MAC2STR(awork->dst), MAC2STR(awork->src),
1410 MAC2STR(awork->bssid), awork->wait_time);
1411 wpa_hexdump(MSG_DEBUG, "P2P: Freeing pending Action frame",
1412 awork->buf, awork->len);
1413 os_free(awork);
1414 wpa_s->p2p_send_action_work->ctx = NULL;
1415 radio_work_done(wpa_s->p2p_send_action_work);
1416 wpa_s->p2p_send_action_work = NULL;
1417 }
1418
1419
1420 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
1421 void *timeout_ctx)
1422 {
1423 struct wpa_supplicant *wpa_s = eloop_ctx;
1424
1425 if (!wpa_s->p2p_send_action_work)
1426 return;
1427
1428 wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
1429 wpas_p2p_free_send_action_work(wpa_s);
1430 }
1431
1432
1433 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s)
1434 {
1435 if (wpa_s->p2p_send_action_work) {
1436 struct send_action_work *awork;
1437
1438 awork = wpa_s->p2p_send_action_work->ctx;
1439 wpa_printf(MSG_DEBUG,
1440 "P2P: Clear Action TX work @%p (wait_time=%u)",
1441 wpa_s->p2p_send_action_work, awork->wait_time);
1442 if (awork->wait_time == 0) {
1443 wpas_p2p_free_send_action_work(wpa_s);
1444 } else {
1445 /*
1446 * In theory, this should not be needed, but number of
1447 * places in the P2P code is still using non-zero wait
1448 * time for the last Action frame in the sequence and
1449 * some of these do not call send_action_done().
1450 */
1451 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1452 wpa_s, NULL);
1453 eloop_register_timeout(
1454 0, awork->wait_time * 1000,
1455 wpas_p2p_send_action_work_timeout,
1456 wpa_s, NULL);
1457 }
1458 }
1459 }
1460
1461
1462 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
1463 unsigned int freq,
1464 const u8 *dst, const u8 *src,
1465 const u8 *bssid,
1466 const u8 *data, size_t data_len,
1467 enum offchannel_send_action_result
1468 result)
1469 {
1470 enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
1471
1472 wpas_p2p_action_tx_clear(wpa_s);
1473
1474 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
1475 return;
1476
1477 switch (result) {
1478 case OFFCHANNEL_SEND_ACTION_SUCCESS:
1479 res = P2P_SEND_ACTION_SUCCESS;
1480 break;
1481 case OFFCHANNEL_SEND_ACTION_NO_ACK:
1482 res = P2P_SEND_ACTION_NO_ACK;
1483 break;
1484 case OFFCHANNEL_SEND_ACTION_FAILED:
1485 res = P2P_SEND_ACTION_FAILED;
1486 break;
1487 }
1488
1489 p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
1490
1491 if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
1492 wpa_s->pending_pd_before_join &&
1493 (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1494 os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
1495 wpa_s->p2p_fallback_to_go_neg) {
1496 wpa_s->pending_pd_before_join = 0;
1497 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
1498 "during p2p_connect-auto");
1499 wpa_msg_global(wpa_s->parent, MSG_INFO,
1500 P2P_EVENT_FALLBACK_TO_GO_NEG
1501 "reason=no-ACK-to-PD-Req");
1502 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
1503 return;
1504 }
1505 }
1506
1507
1508 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1509 {
1510 struct wpa_supplicant *wpa_s = work->wpa_s;
1511 struct send_action_work *awork = work->ctx;
1512
1513 if (deinit) {
1514 if (work->started) {
1515 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1516 wpa_s, NULL);
1517 wpa_s->p2p_send_action_work = NULL;
1518 offchannel_send_action_done(wpa_s);
1519 }
1520 os_free(awork);
1521 return;
1522 }
1523
1524 if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1525 awork->bssid, awork->buf, awork->len,
1526 awork->wait_time,
1527 wpas_p2p_send_action_tx_status, 1) < 0) {
1528 os_free(awork);
1529 radio_work_done(work);
1530 return;
1531 }
1532 wpa_s->p2p_send_action_work = work;
1533 }
1534
1535
1536 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1537 unsigned int freq, const u8 *dst,
1538 const u8 *src, const u8 *bssid, const u8 *buf,
1539 size_t len, unsigned int wait_time)
1540 {
1541 struct send_action_work *awork;
1542
1543 if (wpa_s->p2p_send_action_work) {
1544 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1545 return -1;
1546 }
1547
1548 awork = os_zalloc(sizeof(*awork) + len);
1549 if (awork == NULL)
1550 return -1;
1551
1552 awork->freq = freq;
1553 os_memcpy(awork->dst, dst, ETH_ALEN);
1554 os_memcpy(awork->src, src, ETH_ALEN);
1555 os_memcpy(awork->bssid, bssid, ETH_ALEN);
1556 awork->len = len;
1557 awork->wait_time = wait_time;
1558 os_memcpy(awork->buf, buf, len);
1559
1560 if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1561 wpas_send_action_cb, awork) < 0) {
1562 os_free(awork);
1563 return -1;
1564 }
1565
1566 return 0;
1567 }
1568
1569
1570 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1571 const u8 *src, const u8 *bssid, const u8 *buf,
1572 size_t len, unsigned int wait_time)
1573 {
1574 struct wpa_supplicant *wpa_s = ctx;
1575 int listen_freq = -1, send_freq = -1;
1576
1577 if (wpa_s->p2p_listen_work)
1578 listen_freq = wpa_s->p2p_listen_work->freq;
1579 if (wpa_s->p2p_send_action_work)
1580 send_freq = wpa_s->p2p_send_action_work->freq;
1581 if (listen_freq != (int) freq && send_freq != (int) freq) {
1582 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1583 listen_freq, send_freq);
1584 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1585 len, wait_time);
1586 }
1587
1588 wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1589 return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1590 wait_time,
1591 wpas_p2p_send_action_tx_status, 1);
1592 }
1593
1594
1595 static void wpas_send_action_done(void *ctx)
1596 {
1597 struct wpa_supplicant *wpa_s = ctx;
1598
1599 if (wpa_s->p2p_send_action_work) {
1600 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1601 wpa_s, NULL);
1602 os_free(wpa_s->p2p_send_action_work->ctx);
1603 radio_work_done(wpa_s->p2p_send_action_work);
1604 wpa_s->p2p_send_action_work = NULL;
1605 }
1606
1607 offchannel_send_action_done(wpa_s);
1608 }
1609
1610
1611 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1612 struct p2p_go_neg_results *params)
1613 {
1614 if (wpa_s->go_params == NULL) {
1615 wpa_s->go_params = os_malloc(sizeof(*params));
1616 if (wpa_s->go_params == NULL)
1617 return -1;
1618 }
1619 os_memcpy(wpa_s->go_params, params, sizeof(*params));
1620 return 0;
1621 }
1622
1623
1624 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1625 struct p2p_go_neg_results *res)
1626 {
1627 wpa_s->group_formation_reported = 0;
1628 wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1629 " dev_addr " MACSTR " wps_method %d",
1630 MAC2STR(res->peer_interface_addr),
1631 MAC2STR(res->peer_device_addr), res->wps_method);
1632 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1633 res->ssid, res->ssid_len);
1634 wpa_supplicant_ap_deinit(wpa_s);
1635 wpas_copy_go_neg_results(wpa_s, res);
1636 if (res->wps_method == WPS_PBC) {
1637 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1638 #ifdef CONFIG_WPS_NFC
1639 } else if (res->wps_method == WPS_NFC) {
1640 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1641 res->peer_interface_addr,
1642 wpa_s->parent->p2p_oob_dev_pw,
1643 wpa_s->parent->p2p_oob_dev_pw_id, 1,
1644 wpa_s->parent->p2p_oob_dev_pw_id ==
1645 DEV_PW_NFC_CONNECTION_HANDOVER ?
1646 wpa_s->parent->p2p_peer_oob_pubkey_hash :
1647 NULL,
1648 NULL, 0, 0);
1649 #endif /* CONFIG_WPS_NFC */
1650 } else {
1651 u16 dev_pw_id = DEV_PW_DEFAULT;
1652 if (wpa_s->p2p_wps_method == WPS_P2PS)
1653 dev_pw_id = DEV_PW_P2PS_DEFAULT;
1654 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1655 dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1656 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1657 wpa_s->p2p_pin, 1, dev_pw_id);
1658 }
1659 }
1660
1661
1662 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1663 struct wpa_ssid *ssid)
1664 {
1665 struct wpa_ssid *persistent;
1666 struct psk_list_entry *psk;
1667 struct hostapd_data *hapd;
1668
1669 if (!wpa_s->ap_iface)
1670 return;
1671
1672 persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
1673 ssid->ssid_len);
1674 if (persistent == NULL)
1675 return;
1676
1677 hapd = wpa_s->ap_iface->bss[0];
1678
1679 dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1680 list) {
1681 struct hostapd_wpa_psk *hpsk;
1682
1683 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1684 MACSTR " psk=%d",
1685 MAC2STR(psk->addr), psk->p2p);
1686 hpsk = os_zalloc(sizeof(*hpsk));
1687 if (hpsk == NULL)
1688 break;
1689 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1690 if (psk->p2p)
1691 os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1692 else
1693 os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1694 hpsk->next = hapd->conf->ssid.wpa_psk;
1695 hapd->conf->ssid.wpa_psk = hpsk;
1696 }
1697 }
1698
1699
1700 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s)
1701 {
1702 unsigned int i;
1703
1704 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies (len=%u):",
1705 wpa_s->p2p_group_common_freqs_num);
1706
1707 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++)
1708 wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d",
1709 i, wpa_s->p2p_group_common_freqs[i]);
1710 }
1711
1712
1713 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s,
1714 struct p2p_go_neg_results *params)
1715 {
1716 unsigned int i, len = int_array_len(wpa_s->go_params->freq_list);
1717
1718 wpa_s->p2p_group_common_freqs_num = 0;
1719 os_free(wpa_s->p2p_group_common_freqs);
1720 wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int));
1721 if (!wpa_s->p2p_group_common_freqs)
1722 return;
1723
1724 for (i = 0; i < len; i++) {
1725 if (!wpa_s->go_params->freq_list[i])
1726 break;
1727 wpa_s->p2p_group_common_freqs[i] =
1728 wpa_s->go_params->freq_list[i];
1729 }
1730 wpa_s->p2p_group_common_freqs_num = i;
1731 }
1732
1733
1734 static void p2p_config_write(struct wpa_supplicant *wpa_s)
1735 {
1736 #ifndef CONFIG_NO_CONFIG_WRITE
1737 if (wpa_s->parent->conf->update_config &&
1738 wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
1739 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1740 #endif /* CONFIG_NO_CONFIG_WRITE */
1741 }
1742
1743
1744 static void p2p_go_configured(void *ctx, void *data)
1745 {
1746 struct wpa_supplicant *wpa_s = ctx;
1747 struct p2p_go_neg_results *params = data;
1748 struct wpa_ssid *ssid;
1749 int network_id = -1;
1750
1751 wpa_s->ap_configured_cb = NULL;
1752 wpa_s->ap_configured_cb_ctx = NULL;
1753 wpa_s->ap_configured_cb_data = NULL;
1754 if (!wpa_s->go_params) {
1755 wpa_printf(MSG_ERROR,
1756 "P2P: p2p_go_configured() called with wpa_s->go_params == NULL");
1757 return;
1758 }
1759
1760 p2p_go_save_group_common_freqs(wpa_s, params);
1761 p2p_go_dump_common_freqs(wpa_s);
1762
1763 ssid = wpa_s->current_ssid;
1764 if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1765 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1766 if (wpa_s->global->p2p_group_formation == wpa_s)
1767 wpa_s->global->p2p_group_formation = NULL;
1768 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency,
1769 params->passphrase[0] == '\0' ?
1770 params->psk : NULL,
1771 params->passphrase,
1772 wpa_s->global->p2p_dev_addr,
1773 params->persistent_group, "");
1774 wpa_s->group_formation_reported = 1;
1775
1776 if (wpa_s->parent->p2ps_method_config_any) {
1777 if (is_zero_ether_addr(wpa_s->parent->p2ps_join_addr)) {
1778 wpa_dbg(wpa_s, MSG_DEBUG,
1779 "P2PS: Setting default PIN for ANY");
1780 wpa_supplicant_ap_wps_pin(wpa_s, NULL,
1781 "12345670", NULL, 0,
1782 0);
1783 } else {
1784 wpa_dbg(wpa_s, MSG_DEBUG,
1785 "P2PS: Setting default PIN for " MACSTR,
1786 MAC2STR(wpa_s->parent->p2ps_join_addr));
1787 wpa_supplicant_ap_wps_pin(
1788 wpa_s, wpa_s->parent->p2ps_join_addr,
1789 "12345670", NULL, 0, 0);
1790 }
1791 wpa_s->parent->p2ps_method_config_any = 0;
1792 }
1793
1794 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1795 if (params->persistent_group) {
1796 network_id = wpas_p2p_store_persistent_group(
1797 wpa_s->parent, ssid,
1798 wpa_s->global->p2p_dev_addr);
1799 wpas_p2p_add_psk_list(wpa_s, ssid);
1800 }
1801 if (network_id < 0)
1802 network_id = ssid->id;
1803 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1804 wpas_p2p_cross_connect_setup(wpa_s);
1805 wpas_p2p_set_group_idle_timeout(wpa_s);
1806
1807 if (wpa_s->p2p_first_connection_timeout) {
1808 wpa_dbg(wpa_s, MSG_DEBUG,
1809 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1810 wpa_s->p2p_first_connection_timeout);
1811 wpa_s->p2p_go_group_formation_completed = 0;
1812 wpa_s->global->p2p_group_formation = wpa_s;
1813 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1814 wpa_s->parent, NULL);
1815 eloop_register_timeout(
1816 wpa_s->p2p_first_connection_timeout, 0,
1817 wpas_p2p_group_formation_timeout,
1818 wpa_s->parent, NULL);
1819 }
1820
1821 return;
1822 }
1823
1824 wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1825 if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1826 params->peer_interface_addr)) {
1827 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1828 "filtering");
1829 return;
1830 }
1831 if (params->wps_method == WPS_PBC) {
1832 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1833 params->peer_device_addr);
1834 #ifdef CONFIG_WPS_NFC
1835 } else if (params->wps_method == WPS_NFC) {
1836 if (wpa_s->parent->p2p_oob_dev_pw_id !=
1837 DEV_PW_NFC_CONNECTION_HANDOVER &&
1838 !wpa_s->parent->p2p_oob_dev_pw) {
1839 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1840 return;
1841 }
1842 wpas_ap_wps_add_nfc_pw(
1843 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
1844 wpa_s->parent->p2p_oob_dev_pw,
1845 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
1846 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
1847 #endif /* CONFIG_WPS_NFC */
1848 } else if (wpa_s->p2p_pin[0])
1849 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1850 wpa_s->p2p_pin, NULL, 0, 0);
1851 os_free(wpa_s->go_params);
1852 wpa_s->go_params = NULL;
1853 }
1854
1855
1856 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1857 struct p2p_go_neg_results *params,
1858 int group_formation)
1859 {
1860 struct wpa_ssid *ssid;
1861
1862 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1863 if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1864 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1865 "results");
1866 return;
1867 }
1868
1869 ssid = wpa_config_add_network(wpa_s->conf);
1870 if (ssid == NULL) {
1871 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1872 return;
1873 }
1874
1875 wpa_s->show_group_started = 0;
1876 wpa_s->p2p_go_group_formation_completed = 0;
1877 wpa_s->group_formation_reported = 0;
1878 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1879
1880 wpa_config_set_network_defaults(ssid);
1881 ssid->temporary = 1;
1882 ssid->p2p_group = 1;
1883 ssid->p2p_persistent_group = params->persistent_group;
1884 ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1885 WPAS_MODE_P2P_GO;
1886 ssid->frequency = params->freq;
1887 ssid->ht40 = params->ht40;
1888 ssid->vht = params->vht;
1889 ssid->max_oper_chwidth = params->max_oper_chwidth;
1890 ssid->vht_center_freq2 = params->vht_center_freq2;
1891 ssid->ssid = os_zalloc(params->ssid_len + 1);
1892 if (ssid->ssid) {
1893 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1894 ssid->ssid_len = params->ssid_len;
1895 }
1896 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1897 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1898 ssid->proto = WPA_PROTO_RSN;
1899 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1900 ssid->group_cipher = WPA_CIPHER_CCMP;
1901 if (params->freq > 56160) {
1902 /*
1903 * Enable GCMP instead of CCMP as pairwise_cipher and
1904 * group_cipher in 60 GHz.
1905 */
1906 ssid->pairwise_cipher = WPA_CIPHER_GCMP;
1907 ssid->group_cipher = WPA_CIPHER_GCMP;
1908 }
1909 if (os_strlen(params->passphrase) > 0) {
1910 ssid->passphrase = os_strdup(params->passphrase);
1911 if (ssid->passphrase == NULL) {
1912 wpa_msg_global(wpa_s, MSG_ERROR,
1913 "P2P: Failed to copy passphrase for GO");
1914 wpa_config_remove_network(wpa_s->conf, ssid->id);
1915 return;
1916 }
1917 } else
1918 ssid->passphrase = NULL;
1919 ssid->psk_set = params->psk_set;
1920 if (ssid->psk_set)
1921 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1922 else if (ssid->passphrase)
1923 wpa_config_update_psk(ssid);
1924 ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
1925
1926 wpa_s->ap_configured_cb = p2p_go_configured;
1927 wpa_s->ap_configured_cb_ctx = wpa_s;
1928 wpa_s->ap_configured_cb_data = wpa_s->go_params;
1929 wpa_s->scan_req = NORMAL_SCAN_REQ;
1930 wpa_s->connect_without_scan = ssid;
1931 wpa_s->reassociate = 1;
1932 wpa_s->disconnected = 0;
1933 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1934 "start GO)");
1935 wpa_supplicant_req_scan(wpa_s, 0, 0);
1936 }
1937
1938
1939 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1940 const struct wpa_supplicant *src)
1941 {
1942 struct wpa_config *d;
1943 const struct wpa_config *s;
1944
1945 d = dst->conf;
1946 s = src->conf;
1947
1948 #define C(n) if (s->n) d->n = os_strdup(s->n)
1949 C(device_name);
1950 C(manufacturer);
1951 C(model_name);
1952 C(model_number);
1953 C(serial_number);
1954 C(config_methods);
1955 #undef C
1956
1957 os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1958 os_memcpy(d->sec_device_type, s->sec_device_type,
1959 sizeof(d->sec_device_type));
1960 d->num_sec_device_types = s->num_sec_device_types;
1961
1962 d->p2p_group_idle = s->p2p_group_idle;
1963 d->p2p_go_freq_change_policy = s->p2p_go_freq_change_policy;
1964 d->p2p_intra_bss = s->p2p_intra_bss;
1965 d->persistent_reconnect = s->persistent_reconnect;
1966 d->max_num_sta = s->max_num_sta;
1967 d->pbc_in_m1 = s->pbc_in_m1;
1968 d->ignore_old_scan_res = s->ignore_old_scan_res;
1969 d->beacon_int = s->beacon_int;
1970 d->dtim_period = s->dtim_period;
1971 d->p2p_go_ctwindow = s->p2p_go_ctwindow;
1972 d->disassoc_low_ack = s->disassoc_low_ack;
1973 d->disable_scan_offload = s->disable_scan_offload;
1974 d->passive_scan = s->passive_scan;
1975
1976 if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) {
1977 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
1978 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
1979 }
1980 d->p2p_cli_probe = s->p2p_cli_probe;
1981 }
1982
1983
1984 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
1985 char *ifname, size_t len)
1986 {
1987 char *ifname_ptr = wpa_s->ifname;
1988
1989 if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
1990 os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
1991 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
1992 }
1993
1994 os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
1995 if (os_strlen(ifname) >= IFNAMSIZ &&
1996 os_strlen(wpa_s->ifname) < IFNAMSIZ) {
1997 int res;
1998
1999 /* Try to avoid going over the IFNAMSIZ length limit */
2000 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
2001 if (os_snprintf_error(len, res) && len)
2002 ifname[len - 1] = '\0';
2003 }
2004 }
2005
2006
2007 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
2008 enum wpa_driver_if_type type)
2009 {
2010 char ifname[120], force_ifname[120];
2011
2012 if (wpa_s->pending_interface_name[0]) {
2013 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
2014 "- skip creation of a new one");
2015 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
2016 wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
2017 "unknown?! ifname='%s'",
2018 wpa_s->pending_interface_name);
2019 return -1;
2020 }
2021 return 0;
2022 }
2023
2024 wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
2025 force_ifname[0] = '\0';
2026
2027 wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
2028 ifname);
2029 wpa_s->p2p_group_idx++;
2030
2031 wpa_s->pending_interface_type = type;
2032 if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
2033 wpa_s->pending_interface_addr, NULL) < 0) {
2034 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
2035 "interface");
2036 return -1;
2037 }
2038
2039 if (force_ifname[0]) {
2040 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
2041 force_ifname);
2042 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
2043 sizeof(wpa_s->pending_interface_name));
2044 } else
2045 os_strlcpy(wpa_s->pending_interface_name, ifname,
2046 sizeof(wpa_s->pending_interface_name));
2047 wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
2048 MACSTR, wpa_s->pending_interface_name,
2049 MAC2STR(wpa_s->pending_interface_addr));
2050
2051 return 0;
2052 }
2053
2054
2055 static void wpas_p2p_remove_pending_group_interface(
2056 struct wpa_supplicant *wpa_s)
2057 {
2058 if (!wpa_s->pending_interface_name[0] ||
2059 is_zero_ether_addr(wpa_s->pending_interface_addr))
2060 return; /* No pending virtual interface */
2061
2062 wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
2063 wpa_s->pending_interface_name);
2064 wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
2065 wpa_s->pending_interface_name);
2066 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2067 wpa_s->pending_interface_name[0] = '\0';
2068 wpa_s->global->pending_group_iface_for_p2ps = 0;
2069 }
2070
2071
2072 static struct wpa_supplicant *
2073 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
2074 {
2075 struct wpa_interface iface;
2076 struct wpa_supplicant *group_wpa_s;
2077
2078 if (!wpa_s->pending_interface_name[0]) {
2079 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
2080 if (!wpas_p2p_create_iface(wpa_s))
2081 return NULL;
2082 /*
2083 * Something has forced us to remove the pending interface; try
2084 * to create a new one and hope for the best that we will get
2085 * the same local address.
2086 */
2087 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
2088 WPA_IF_P2P_CLIENT) < 0)
2089 return NULL;
2090 }
2091
2092 os_memset(&iface, 0, sizeof(iface));
2093 iface.ifname = wpa_s->pending_interface_name;
2094 iface.driver = wpa_s->driver->name;
2095 if (wpa_s->conf->ctrl_interface == NULL &&
2096 wpa_s->parent != wpa_s &&
2097 wpa_s->p2p_mgmt &&
2098 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
2099 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
2100 else
2101 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
2102 iface.driver_param = wpa_s->conf->driver_param;
2103 group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
2104 if (group_wpa_s == NULL) {
2105 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
2106 "wpa_supplicant interface");
2107 return NULL;
2108 }
2109 wpa_s->pending_interface_name[0] = '\0';
2110 group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
2111 P2P_GROUP_INTERFACE_CLIENT;
2112 wpa_s->global->p2p_group_formation = group_wpa_s;
2113 wpa_s->global->pending_group_iface_for_p2ps = 0;
2114
2115 wpas_p2p_clone_config(group_wpa_s, wpa_s);
2116
2117 return group_wpa_s;
2118 }
2119
2120
2121 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
2122 void *timeout_ctx)
2123 {
2124 struct wpa_supplicant *wpa_s = eloop_ctx;
2125 wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
2126 wpas_p2p_group_formation_failed(wpa_s, 0);
2127 }
2128
2129
2130 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
2131 int already_deleted)
2132 {
2133 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2134 wpa_s->parent, NULL);
2135 if (wpa_s->global->p2p)
2136 p2p_group_formation_failed(wpa_s->global->p2p);
2137 wpas_group_formation_completed(wpa_s, 0, already_deleted);
2138 }
2139
2140
2141 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
2142 {
2143 wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
2144 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2145 wpa_s->parent, NULL);
2146 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2147 wpa_s->parent, NULL);
2148 wpa_s->global->p2p_fail_on_wps_complete = 0;
2149 }
2150
2151
2152 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
2153 {
2154 if (wpa_s->global->p2p_group_formation != wpa_s)
2155 return;
2156 /* Speed up group formation timeout since this cannot succeed */
2157 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2158 wpa_s->parent, NULL);
2159 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2160 wpa_s->parent, NULL);
2161 }
2162
2163
2164 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
2165 {
2166 struct wpa_supplicant *wpa_s = ctx;
2167
2168 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2169 wpa_drv_cancel_remain_on_channel(wpa_s);
2170 wpa_s->off_channel_freq = 0;
2171 wpa_s->roc_waiting_drv_freq = 0;
2172 }
2173
2174 if (res->status) {
2175 wpa_msg_global(wpa_s, MSG_INFO,
2176 P2P_EVENT_GO_NEG_FAILURE "status=%d",
2177 res->status);
2178 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2179 wpas_p2p_remove_pending_group_interface(wpa_s);
2180 return;
2181 }
2182
2183 if (!res->role_go) {
2184 /* Inform driver of the operating channel of GO. */
2185 wpa_drv_set_prob_oper_freq(wpa_s, res->freq);
2186 }
2187
2188 if (wpa_s->p2p_go_ht40)
2189 res->ht40 = 1;
2190 if (wpa_s->p2p_go_vht)
2191 res->vht = 1;
2192 res->max_oper_chwidth = wpa_s->p2p_go_max_oper_chwidth;
2193 res->vht_center_freq2 = wpa_s->p2p_go_vht_center_freq2;
2194
2195 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
2196 "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
2197 " wps_method=%s",
2198 res->role_go ? "GO" : "client", res->freq, res->ht40,
2199 MAC2STR(res->peer_device_addr),
2200 MAC2STR(res->peer_interface_addr),
2201 p2p_wps_method_text(res->wps_method));
2202 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2203
2204 if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
2205 struct wpa_ssid *ssid;
2206 ssid = wpa_config_get_network(wpa_s->conf,
2207 wpa_s->p2p_persistent_id);
2208 if (ssid && ssid->disabled == 2 &&
2209 ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
2210 size_t len = os_strlen(ssid->passphrase);
2211 wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
2212 "on requested persistent group");
2213 os_memcpy(res->passphrase, ssid->passphrase, len);
2214 res->passphrase[len] = '\0';
2215 }
2216 }
2217
2218 if (wpa_s->create_p2p_iface) {
2219 struct wpa_supplicant *group_wpa_s =
2220 wpas_p2p_init_group_interface(wpa_s, res->role_go);
2221 if (group_wpa_s == NULL) {
2222 wpas_p2p_remove_pending_group_interface(wpa_s);
2223 eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
2224 wpa_s, NULL);
2225 wpas_p2p_group_formation_failed(wpa_s, 1);
2226 return;
2227 }
2228 if (group_wpa_s != wpa_s) {
2229 os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
2230 sizeof(group_wpa_s->p2p_pin));
2231 group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
2232 }
2233 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2234 wpa_s->pending_interface_name[0] = '\0';
2235 group_wpa_s->p2p_in_provisioning = 1;
2236
2237 if (res->role_go) {
2238 wpas_start_wps_go(group_wpa_s, res, 1);
2239 } else {
2240 os_get_reltime(&group_wpa_s->scan_min_time);
2241 wpas_start_wps_enrollee(group_wpa_s, res);
2242 }
2243 } else {
2244 wpa_s->p2p_in_provisioning = 1;
2245 wpa_s->global->p2p_group_formation = wpa_s;
2246
2247 if (res->role_go) {
2248 wpas_start_wps_go(wpa_s, res, 1);
2249 } else {
2250 os_get_reltime(&wpa_s->scan_min_time);
2251 wpas_start_wps_enrollee(ctx, res);
2252 }
2253 }
2254
2255 wpa_s->p2p_long_listen = 0;
2256 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2257
2258 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2259 eloop_register_timeout(15 + res->peer_config_timeout / 100,
2260 (res->peer_config_timeout % 100) * 10000,
2261 wpas_p2p_group_formation_timeout, wpa_s, NULL);
2262 }
2263
2264
2265 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id,
2266 u8 go_intent)
2267 {
2268 struct wpa_supplicant *wpa_s = ctx;
2269 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
2270 " dev_passwd_id=%u go_intent=%u", MAC2STR(src),
2271 dev_passwd_id, go_intent);
2272
2273 wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id, go_intent);
2274 }
2275
2276
2277 static void wpas_dev_found(void *ctx, const u8 *addr,
2278 const struct p2p_peer_info *info,
2279 int new_device)
2280 {
2281 #ifndef CONFIG_NO_STDOUT_DEBUG
2282 struct wpa_supplicant *wpa_s = ctx;
2283 char devtype[WPS_DEV_TYPE_BUFSIZE];
2284 char *wfd_dev_info_hex = NULL;
2285
2286 #ifdef CONFIG_WIFI_DISPLAY
2287 wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
2288 WFD_SUBELEM_DEVICE_INFO);
2289 #endif /* CONFIG_WIFI_DISPLAY */
2290
2291 if (info->p2ps_instance) {
2292 char str[256];
2293 const u8 *buf = wpabuf_head(info->p2ps_instance);
2294 size_t len = wpabuf_len(info->p2ps_instance);
2295
2296 while (len) {
2297 u32 id;
2298 u16 methods;
2299 u8 str_len;
2300
2301 if (len < 4 + 2 + 1)
2302 break;
2303 id = WPA_GET_LE32(buf);
2304 buf += sizeof(u32);
2305 methods = WPA_GET_BE16(buf);
2306 buf += sizeof(u16);
2307 str_len = *buf++;
2308 if (str_len > len - 4 - 2 - 1)
2309 break;
2310 os_memcpy(str, buf, str_len);
2311 str[str_len] = '\0';
2312 buf += str_len;
2313 len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8);
2314
2315 wpa_msg_global(wpa_s, MSG_INFO,
2316 P2P_EVENT_DEVICE_FOUND MACSTR
2317 " p2p_dev_addr=" MACSTR
2318 " pri_dev_type=%s name='%s'"
2319 " config_methods=0x%x"
2320 " dev_capab=0x%x"
2321 " group_capab=0x%x"
2322 " adv_id=%x asp_svc=%s%s",
2323 MAC2STR(addr),
2324 MAC2STR(info->p2p_device_addr),
2325 wps_dev_type_bin2str(
2326 info->pri_dev_type,
2327 devtype, sizeof(devtype)),
2328 info->device_name, methods,
2329 info->dev_capab, info->group_capab,
2330 id, str,
2331 info->vendor_elems ?
2332 " vendor_elems=1" : "");
2333 }
2334 goto done;
2335 }
2336
2337 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
2338 " p2p_dev_addr=" MACSTR
2339 " pri_dev_type=%s name='%s' config_methods=0x%x "
2340 "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d",
2341 MAC2STR(addr), MAC2STR(info->p2p_device_addr),
2342 wps_dev_type_bin2str(info->pri_dev_type, devtype,
2343 sizeof(devtype)),
2344 info->device_name, info->config_methods,
2345 info->dev_capab, info->group_capab,
2346 wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
2347 wfd_dev_info_hex ? wfd_dev_info_hex : "",
2348 info->vendor_elems ? " vendor_elems=1" : "",
2349 new_device);
2350
2351 done:
2352 os_free(wfd_dev_info_hex);
2353 #endif /* CONFIG_NO_STDOUT_DEBUG */
2354
2355 wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
2356 }
2357
2358
2359 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
2360 {
2361 struct wpa_supplicant *wpa_s = ctx;
2362
2363 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
2364 "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
2365
2366 wpas_notify_p2p_device_lost(wpa_s, dev_addr);
2367 }
2368
2369
2370 static void wpas_find_stopped(void *ctx)
2371 {
2372 struct wpa_supplicant *wpa_s = ctx;
2373 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
2374 wpas_notify_p2p_find_stopped(wpa_s);
2375 }
2376
2377
2378 struct wpas_p2p_listen_work {
2379 unsigned int freq;
2380 unsigned int duration;
2381 struct wpabuf *probe_resp_ie;
2382 };
2383
2384
2385 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
2386 {
2387 if (lwork == NULL)
2388 return;
2389 wpabuf_free(lwork->probe_resp_ie);
2390 os_free(lwork);
2391 }
2392
2393
2394 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
2395 {
2396 struct wpas_p2p_listen_work *lwork;
2397
2398 if (!wpa_s->p2p_listen_work)
2399 return;
2400
2401 lwork = wpa_s->p2p_listen_work->ctx;
2402 wpas_p2p_listen_work_free(lwork);
2403 radio_work_done(wpa_s->p2p_listen_work);
2404 wpa_s->p2p_listen_work = NULL;
2405 }
2406
2407
2408 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
2409 {
2410 struct wpa_supplicant *wpa_s = work->wpa_s;
2411 struct wpas_p2p_listen_work *lwork = work->ctx;
2412 unsigned int duration;
2413
2414 if (deinit) {
2415 if (work->started) {
2416 wpa_s->p2p_listen_work = NULL;
2417 wpas_stop_listen(wpa_s);
2418 }
2419 wpas_p2p_listen_work_free(lwork);
2420 return;
2421 }
2422
2423 wpa_s->p2p_listen_work = work;
2424
2425 wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
2426
2427 if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
2428 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
2429 "report received Probe Request frames");
2430 wpas_p2p_listen_work_done(wpa_s);
2431 return;
2432 }
2433
2434 wpa_s->pending_listen_freq = lwork->freq;
2435 wpa_s->pending_listen_duration = lwork->duration;
2436
2437 duration = lwork->duration;
2438 #ifdef CONFIG_TESTING_OPTIONS
2439 if (wpa_s->extra_roc_dur) {
2440 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u",
2441 duration, duration + wpa_s->extra_roc_dur);
2442 duration += wpa_s->extra_roc_dur;
2443 }
2444 #endif /* CONFIG_TESTING_OPTIONS */
2445
2446 if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) {
2447 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
2448 "to remain on channel (%u MHz) for Listen "
2449 "state", lwork->freq);
2450 wpas_p2p_listen_work_done(wpa_s);
2451 wpa_s->pending_listen_freq = 0;
2452 return;
2453 }
2454 wpa_s->off_channel_freq = 0;
2455 wpa_s->roc_waiting_drv_freq = lwork->freq;
2456 }
2457
2458
2459 static int wpas_start_listen(void *ctx, unsigned int freq,
2460 unsigned int duration,
2461 const struct wpabuf *probe_resp_ie)
2462 {
2463 struct wpa_supplicant *wpa_s = ctx;
2464 struct wpas_p2p_listen_work *lwork;
2465
2466 if (wpa_s->p2p_listen_work) {
2467 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
2468 return -1;
2469 }
2470
2471 lwork = os_zalloc(sizeof(*lwork));
2472 if (lwork == NULL)
2473 return -1;
2474 lwork->freq = freq;
2475 lwork->duration = duration;
2476 if (probe_resp_ie) {
2477 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
2478 if (lwork->probe_resp_ie == NULL) {
2479 wpas_p2p_listen_work_free(lwork);
2480 return -1;
2481 }
2482 }
2483
2484 if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
2485 lwork) < 0) {
2486 wpas_p2p_listen_work_free(lwork);
2487 return -1;
2488 }
2489
2490 return 0;
2491 }
2492
2493
2494 static void wpas_stop_listen(void *ctx)
2495 {
2496 struct wpa_supplicant *wpa_s = ctx;
2497 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2498 wpa_drv_cancel_remain_on_channel(wpa_s);
2499 wpa_s->off_channel_freq = 0;
2500 wpa_s->roc_waiting_drv_freq = 0;
2501 }
2502 wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
2503
2504 /*
2505 * Don't cancel Probe Request RX reporting for a connected P2P Client
2506 * handling Probe Request frames.
2507 */
2508 if (!wpa_s->p2p_cli_probe)
2509 wpa_drv_probe_req_report(wpa_s, 0);
2510
2511 wpas_p2p_listen_work_done(wpa_s);
2512 }
2513
2514
2515 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf,
2516 unsigned int freq)
2517 {
2518 struct wpa_supplicant *wpa_s = ctx;
2519 return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1,
2520 freq);
2521 }
2522
2523
2524 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2525 const u8 *peer, const char *params,
2526 unsigned int generated_pin)
2527 {
2528 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2529 " %08d%s", MAC2STR(peer), generated_pin, params);
2530 }
2531
2532
2533 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2534 const u8 *peer, const char *params)
2535 {
2536 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2537 "%s", MAC2STR(peer), params);
2538 }
2539
2540
2541 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2542 const u8 *dev_addr, const u8 *pri_dev_type,
2543 const char *dev_name, u16 supp_config_methods,
2544 u8 dev_capab, u8 group_capab, const u8 *group_id,
2545 size_t group_id_len)
2546 {
2547 struct wpa_supplicant *wpa_s = ctx;
2548 char devtype[WPS_DEV_TYPE_BUFSIZE];
2549 char params[300];
2550 u8 empty_dev_type[8];
2551 unsigned int generated_pin = 0;
2552 struct wpa_supplicant *group = NULL;
2553 int res;
2554
2555 if (group_id) {
2556 for (group = wpa_s->global->ifaces; group; group = group->next)
2557 {
2558 struct wpa_ssid *s = group->current_ssid;
2559 if (s != NULL &&
2560 s->mode == WPAS_MODE_P2P_GO &&
2561 group_id_len - ETH_ALEN == s->ssid_len &&
2562 os_memcmp(group_id + ETH_ALEN, s->ssid,
2563 s->ssid_len) == 0)
2564 break;
2565 }
2566 }
2567
2568 if (pri_dev_type == NULL) {
2569 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2570 pri_dev_type = empty_dev_type;
2571 }
2572 res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2573 " pri_dev_type=%s name='%s' config_methods=0x%x "
2574 "dev_capab=0x%x group_capab=0x%x%s%s",
2575 MAC2STR(dev_addr),
2576 wps_dev_type_bin2str(pri_dev_type, devtype,
2577 sizeof(devtype)),
2578 dev_name, supp_config_methods, dev_capab, group_capab,
2579 group ? " group=" : "",
2580 group ? group->ifname : "");
2581 if (os_snprintf_error(sizeof(params), res))
2582 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated");
2583 params[sizeof(params) - 1] = '\0';
2584
2585 if (config_methods & WPS_CONFIG_DISPLAY) {
2586 generated_pin = wps_generate_pin();
2587 wpas_prov_disc_local_display(wpa_s, peer, params,
2588 generated_pin);
2589 } else if (config_methods & WPS_CONFIG_KEYPAD)
2590 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2591 else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2592 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2593 MACSTR "%s", MAC2STR(peer), params);
2594
2595 wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2596 P2P_PROV_DISC_SUCCESS,
2597 config_methods, generated_pin);
2598 }
2599
2600
2601 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2602 {
2603 struct wpa_supplicant *wpa_s = ctx;
2604 unsigned int generated_pin = 0;
2605 char params[20];
2606
2607 if (wpa_s->pending_pd_before_join &&
2608 (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2609 os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2610 wpa_s->pending_pd_before_join = 0;
2611 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2612 "join-existing-group operation");
2613 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2614 return;
2615 }
2616
2617 if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2618 wpa_s->pending_pd_use == AUTO_PD_GO_NEG) {
2619 int res;
2620
2621 res = os_snprintf(params, sizeof(params), " peer_go=%d",
2622 wpa_s->pending_pd_use == AUTO_PD_JOIN);
2623 if (os_snprintf_error(sizeof(params), res))
2624 params[sizeof(params) - 1] = '\0';
2625 } else
2626 params[0] = '\0';
2627
2628 if (config_methods & WPS_CONFIG_DISPLAY)
2629 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2630 else if (config_methods & WPS_CONFIG_KEYPAD) {
2631 generated_pin = wps_generate_pin();
2632 wpas_prov_disc_local_display(wpa_s, peer, params,
2633 generated_pin);
2634 } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2635 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2636 MACSTR "%s", MAC2STR(peer), params);
2637
2638 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2639 P2P_PROV_DISC_SUCCESS,
2640 config_methods, generated_pin);
2641 }
2642
2643
2644 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2645 enum p2p_prov_disc_status status,
2646 u32 adv_id, const u8 *adv_mac,
2647 const char *deferred_session_resp)
2648 {
2649 struct wpa_supplicant *wpa_s = ctx;
2650
2651 if (wpa_s->p2p_fallback_to_go_neg) {
2652 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2653 "failed - fall back to GO Negotiation");
2654 wpa_msg_global(wpa_s->parent, MSG_INFO,
2655 P2P_EVENT_FALLBACK_TO_GO_NEG
2656 "reason=PD-failed");
2657 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2658 return;
2659 }
2660
2661 if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2662 wpa_s->pending_pd_before_join = 0;
2663 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2664 "join-existing-group operation (no ACK for PD "
2665 "Req attempts)");
2666 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2667 return;
2668 }
2669
2670 if (adv_id && adv_mac && deferred_session_resp) {
2671 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2672 " p2p_dev_addr=" MACSTR " status=%d adv_id=%x"
2673 " deferred_session_resp='%s'",
2674 MAC2STR(peer), status, adv_id,
2675 deferred_session_resp);
2676 } else if (adv_id && adv_mac) {
2677 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2678 " p2p_dev_addr=" MACSTR " status=%d adv_id=%x",
2679 MAC2STR(peer), status, adv_id);
2680 } else {
2681 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2682 " p2p_dev_addr=" MACSTR " status=%d",
2683 MAC2STR(peer), status);
2684 }
2685
2686 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2687 status, 0, 0);
2688 }
2689
2690
2691 static int freq_included(struct wpa_supplicant *wpa_s,
2692 const struct p2p_channels *channels,
2693 unsigned int freq)
2694 {
2695 if ((channels == NULL || p2p_channels_includes_freq(channels, freq)) &&
2696 wpas_p2p_go_is_peer_freq(wpa_s, freq))
2697 return 1;
2698 return 0;
2699 }
2700
2701
2702 static void wpas_p2p_go_update_common_freqs(struct wpa_supplicant *wpa_s)
2703 {
2704 unsigned int num = P2P_MAX_CHANNELS;
2705 int *common_freqs;
2706 int ret;
2707
2708 p2p_go_dump_common_freqs(wpa_s);
2709 common_freqs = os_calloc(num, sizeof(int));
2710 if (!common_freqs)
2711 return;
2712
2713 ret = p2p_group_get_common_freqs(wpa_s->p2p_group, common_freqs, &num);
2714 if (ret < 0) {
2715 wpa_dbg(wpa_s, MSG_DEBUG,
2716 "P2P: Failed to get group common freqs");
2717 os_free(common_freqs);
2718 return;
2719 }
2720
2721 os_free(wpa_s->p2p_group_common_freqs);
2722 wpa_s->p2p_group_common_freqs = common_freqs;
2723 wpa_s->p2p_group_common_freqs_num = num;
2724 p2p_go_dump_common_freqs(wpa_s);
2725 }
2726
2727
2728 /*
2729 * Check if the given frequency is one of the possible operating frequencies
2730 * set after the completion of the GO Negotiation.
2731 */
2732 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq)
2733 {
2734 unsigned int i;
2735
2736 p2p_go_dump_common_freqs(wpa_s);
2737
2738 /* assume no restrictions */
2739 if (!wpa_s->p2p_group_common_freqs_num)
2740 return 1;
2741
2742 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
2743 if (wpa_s->p2p_group_common_freqs[i] == freq)
2744 return 1;
2745 }
2746 return 0;
2747 }
2748
2749
2750 static int wpas_sta_check_ecsa(struct hostapd_data *hapd,
2751 struct sta_info *sta, void *ctx)
2752 {
2753 int *ecsa_support = ctx;
2754
2755 *ecsa_support &= sta->ecsa_supported;
2756
2757 return 0;
2758 }
2759
2760
2761 /* Check if all the peers support eCSA */
2762 static int wpas_p2p_go_clients_support_ecsa(struct wpa_supplicant *wpa_s)
2763 {
2764 int ecsa_support = 1;
2765
2766 ap_for_each_sta(wpa_s->ap_iface->bss[0], wpas_sta_check_ecsa,
2767 &ecsa_support);
2768
2769 return ecsa_support;
2770 }
2771
2772
2773 /**
2774 * Pick the best frequency to use from all the currently used frequencies.
2775 */
2776 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
2777 struct wpa_used_freq_data *freqs,
2778 unsigned int num)
2779 {
2780 unsigned int i, c;
2781
2782 /* find a candidate freq that is supported by P2P */
2783 for (c = 0; c < num; c++)
2784 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
2785 break;
2786
2787 if (c == num)
2788 return 0;
2789
2790 /* once we have a candidate, try to find a 'better' one */
2791 for (i = c + 1; i < num; i++) {
2792 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
2793 continue;
2794
2795 /*
2796 * 1. Infrastructure station interfaces have higher preference.
2797 * 2. P2P Clients have higher preference.
2798 * 3. All others.
2799 */
2800 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
2801 c = i;
2802 break;
2803 }
2804
2805 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
2806 c = i;
2807 }
2808 return freqs[c].freq;
2809 }
2810
2811
2812 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2813 const u8 *go_dev_addr, const u8 *ssid,
2814 size_t ssid_len, int *go, u8 *group_bssid,
2815 int *force_freq, int persistent_group,
2816 const struct p2p_channels *channels,
2817 int dev_pw_id)
2818 {
2819 struct wpa_supplicant *wpa_s = ctx;
2820 struct wpa_ssid *s;
2821 struct wpa_used_freq_data *freqs;
2822 struct wpa_supplicant *grp;
2823 int best_freq;
2824
2825 if (!persistent_group) {
2826 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2827 " to join an active group (SSID: %s)",
2828 MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2829 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2830 (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2831 == 0 ||
2832 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2833 wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2834 "authorized invitation");
2835 goto accept_inv;
2836 }
2837
2838 #ifdef CONFIG_WPS_NFC
2839 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled &&
2840 dev_pw_id == wpa_s->p2p_oob_dev_pw_id) {
2841 wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2842 wpa_s->p2p_wps_method = WPS_NFC;
2843 wpa_s->pending_join_wps_method = WPS_NFC;
2844 os_memcpy(wpa_s->pending_join_dev_addr,
2845 go_dev_addr, ETH_ALEN);
2846 os_memcpy(wpa_s->pending_join_iface_addr,
2847 bssid, ETH_ALEN);
2848 goto accept_inv;
2849 }
2850 #endif /* CONFIG_WPS_NFC */
2851
2852 /*
2853 * Do not accept the invitation automatically; notify user and
2854 * request approval.
2855 */
2856 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2857 }
2858
2859 grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2860 if (grp) {
2861 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2862 "running persistent group");
2863 if (*go)
2864 os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2865 goto accept_inv;
2866 }
2867
2868 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2869 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2870 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2871 "invitation to re-invoke a persistent group");
2872 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
2873 } else if (!wpa_s->conf->persistent_reconnect)
2874 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2875
2876 for (s = wpa_s->conf->ssid; s; s = s->next) {
2877 if (s->disabled == 2 &&
2878 os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2879 s->ssid_len == ssid_len &&
2880 os_memcmp(ssid, s->ssid, ssid_len) == 0)
2881 break;
2882 }
2883
2884 if (!s) {
2885 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2886 " requested reinvocation of an unknown group",
2887 MAC2STR(sa));
2888 return P2P_SC_FAIL_UNKNOWN_GROUP;
2889 }
2890
2891 if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2892 *go = 1;
2893 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2894 wpa_printf(MSG_DEBUG, "P2P: The only available "
2895 "interface is already in use - reject "
2896 "invitation");
2897 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2898 }
2899 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2900 } else if (s->mode == WPAS_MODE_P2P_GO) {
2901 *go = 1;
2902 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2903 {
2904 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2905 "interface address for the group");
2906 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2907 }
2908 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2909 ETH_ALEN);
2910 }
2911
2912 accept_inv:
2913 wpas_p2p_set_own_freq_preference(wpa_s, 0);
2914
2915 best_freq = 0;
2916 freqs = os_calloc(wpa_s->num_multichan_concurrent,
2917 sizeof(struct wpa_used_freq_data));
2918 if (freqs) {
2919 int num_channels = wpa_s->num_multichan_concurrent;
2920 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
2921 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
2922 os_free(freqs);
2923 }
2924
2925 /* Get one of the frequencies currently in use */
2926 if (best_freq > 0) {
2927 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
2928 wpas_p2p_set_own_freq_preference(wpa_s, best_freq);
2929
2930 if (wpa_s->num_multichan_concurrent < 2 ||
2931 wpas_p2p_num_unused_channels(wpa_s) < 1) {
2932 wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
2933 *force_freq = best_freq;
2934 }
2935 }
2936
2937 if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
2938 wpas_p2p_num_unused_channels(wpa_s) > 0) {
2939 if (*go == 0) {
2940 /* We are the client */
2941 wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
2942 "running a GO but we are capable of MCC, "
2943 "figure out the best channel to use");
2944 *force_freq = 0;
2945 } else if (!freq_included(wpa_s, channels, *force_freq)) {
2946 /* We are the GO, and *force_freq is not in the
2947 * intersection */
2948 wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
2949 "in intersection but we are capable of MCC, "
2950 "figure out the best channel to use",
2951 *force_freq);
2952 *force_freq = 0;
2953 }
2954 }
2955
2956 return P2P_SC_SUCCESS;
2957 }
2958
2959
2960 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2961 const u8 *ssid, size_t ssid_len,
2962 const u8 *go_dev_addr, u8 status,
2963 int op_freq)
2964 {
2965 struct wpa_supplicant *wpa_s = ctx;
2966 struct wpa_ssid *s;
2967
2968 for (s = wpa_s->conf->ssid; s; s = s->next) {
2969 if (s->disabled == 2 &&
2970 s->ssid_len == ssid_len &&
2971 os_memcmp(ssid, s->ssid, ssid_len) == 0)
2972 break;
2973 }
2974
2975 if (status == P2P_SC_SUCCESS) {
2976 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2977 " was accepted; op_freq=%d MHz, SSID=%s",
2978 MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
2979 if (s) {
2980 int go = s->mode == WPAS_MODE_P2P_GO;
2981 wpas_p2p_group_add_persistent(
2982 wpa_s, s, go, 0, op_freq, 0, 0, 0, 0, NULL,
2983 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0,
2984 1);
2985 } else if (bssid) {
2986 wpa_s->user_initiated_pd = 0;
2987 wpas_p2p_join(wpa_s, bssid, go_dev_addr,
2988 wpa_s->p2p_wps_method, 0, op_freq,
2989 ssid, ssid_len);
2990 }
2991 return;
2992 }
2993
2994 if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2995 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2996 " was rejected (status %u)", MAC2STR(sa), status);
2997 return;
2998 }
2999
3000 if (!s) {
3001 if (bssid) {
3002 wpa_msg_global(wpa_s, MSG_INFO,
3003 P2P_EVENT_INVITATION_RECEIVED
3004 "sa=" MACSTR " go_dev_addr=" MACSTR
3005 " bssid=" MACSTR " unknown-network",
3006 MAC2STR(sa), MAC2STR(go_dev_addr),
3007 MAC2STR(bssid));
3008 } else {
3009 wpa_msg_global(wpa_s, MSG_INFO,
3010 P2P_EVENT_INVITATION_RECEIVED
3011 "sa=" MACSTR " go_dev_addr=" MACSTR
3012 " unknown-network",
3013 MAC2STR(sa), MAC2STR(go_dev_addr));
3014 }
3015 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr,
3016 bssid, 0, op_freq);
3017 return;
3018 }
3019
3020 if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
3021 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3022 "sa=" MACSTR " persistent=%d freq=%d",
3023 MAC2STR(sa), s->id, op_freq);
3024 } else {
3025 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3026 "sa=" MACSTR " persistent=%d",
3027 MAC2STR(sa), s->id);
3028 }
3029 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, bssid,
3030 s->id, op_freq);
3031 }
3032
3033
3034 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
3035 struct wpa_ssid *ssid,
3036 const u8 *peer, int inv)
3037 {
3038 size_t i;
3039 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
3040
3041 if (ssid == NULL)
3042 return;
3043
3044 for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
3045 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer,
3046 ETH_ALEN) == 0)
3047 break;
3048 }
3049 if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
3050 if (ssid->mode != WPAS_MODE_P2P_GO &&
3051 os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
3052 wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
3053 "due to invitation result", ssid->id);
3054 wpas_notify_network_removed(wpa_s, ssid);
3055 wpa_config_remove_network(wpa_s->conf, ssid->id);
3056 return;
3057 }
3058 return; /* Peer not found in client list */
3059 }
3060
3061 wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
3062 "group %d client list%s",
3063 MAC2STR(peer), ssid->id,
3064 inv ? " due to invitation result" : "");
3065 os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN,
3066 ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3067 (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3068 ssid->num_p2p_clients--;
3069 if (p2p_wpa_s->conf->update_config &&
3070 wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
3071 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
3072 }
3073
3074
3075 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
3076 const u8 *peer)
3077 {
3078 struct wpa_ssid *ssid;
3079
3080 wpa_s = wpa_s->global->p2p_invite_group;
3081 if (wpa_s == NULL)
3082 return; /* No known invitation group */
3083 ssid = wpa_s->current_ssid;
3084 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
3085 !ssid->p2p_persistent_group)
3086 return; /* Not operating as a GO in persistent group */
3087 ssid = wpas_p2p_get_persistent(wpa_s->parent, peer,
3088 ssid->ssid, ssid->ssid_len);
3089 wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3090 }
3091
3092
3093 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
3094 const struct p2p_channels *channels,
3095 const u8 *peer, int neg_freq,
3096 int peer_oper_freq)
3097 {
3098 struct wpa_supplicant *wpa_s = ctx;
3099 struct wpa_ssid *ssid;
3100 int freq;
3101
3102 if (bssid) {
3103 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3104 "status=%d " MACSTR,
3105 status, MAC2STR(bssid));
3106 } else {
3107 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3108 "status=%d ", status);
3109 }
3110 wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
3111
3112 wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
3113 status, MAC2STR(peer));
3114 if (wpa_s->pending_invite_ssid_id == -1) {
3115 struct wpa_supplicant *group_if =
3116 wpa_s->global->p2p_invite_group;
3117
3118 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
3119 wpas_remove_persistent_client(wpa_s, peer);
3120
3121 /*
3122 * Invitation to an active group. If this is successful and we
3123 * are the GO, set the client wait to postpone some concurrent
3124 * operations and to allow provisioning and connection to happen
3125 * more quickly.
3126 */
3127 if (status == P2P_SC_SUCCESS &&
3128 group_if && group_if->current_ssid &&
3129 group_if->current_ssid->mode == WPAS_MODE_P2P_GO) {
3130 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
3131 #ifdef CONFIG_TESTING_OPTIONS
3132 if (group_if->p2p_go_csa_on_inv) {
3133 wpa_printf(MSG_DEBUG,
3134 "Testing: force P2P GO CSA after invitation");
3135 eloop_cancel_timeout(
3136 wpas_p2p_reconsider_moving_go,
3137 wpa_s, NULL);
3138 eloop_register_timeout(
3139 0, 50000,
3140 wpas_p2p_reconsider_moving_go,
3141 wpa_s, NULL);
3142 }
3143 #endif /* CONFIG_TESTING_OPTIONS */
3144 }
3145 return;
3146 }
3147
3148 if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3149 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
3150 "invitation exchange to indicate readiness for "
3151 "re-invocation");
3152 }
3153
3154 if (status != P2P_SC_SUCCESS) {
3155 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
3156 ssid = wpa_config_get_network(
3157 wpa_s->conf, wpa_s->pending_invite_ssid_id);
3158 wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3159 }
3160 wpas_p2p_remove_pending_group_interface(wpa_s);
3161 return;
3162 }
3163
3164 ssid = wpa_config_get_network(wpa_s->conf,
3165 wpa_s->pending_invite_ssid_id);
3166 if (ssid == NULL) {
3167 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
3168 "data matching with invitation");
3169 return;
3170 }
3171
3172 /*
3173 * The peer could have missed our ctrl::ack frame for Invitation
3174 * Response and continue retransmitting the frame. To reduce the
3175 * likelihood of the peer not getting successful TX status for the
3176 * Invitation Response frame, wait a short time here before starting
3177 * the persistent group so that we will remain on the current channel to
3178 * acknowledge any possible retransmission from the peer.
3179 */
3180 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
3181 "starting persistent group");
3182 os_sleep(0, 50000);
3183
3184 if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
3185 freq_included(wpa_s, channels, neg_freq))
3186 freq = neg_freq;
3187 else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
3188 freq_included(wpa_s, channels, peer_oper_freq))
3189 freq = peer_oper_freq;
3190 else
3191 freq = 0;
3192
3193 wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
3194 freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3195 wpas_p2p_group_add_persistent(wpa_s, ssid,
3196 ssid->mode == WPAS_MODE_P2P_GO,
3197 wpa_s->p2p_persistent_go_freq,
3198 freq,
3199 wpa_s->p2p_go_vht_center_freq2,
3200 wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
3201 wpa_s->p2p_go_max_oper_chwidth,
3202 channels,
3203 ssid->mode == WPAS_MODE_P2P_GO ?
3204 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3205 0, 1);
3206 }
3207
3208
3209 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
3210 unsigned int freq)
3211 {
3212 if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
3213 return 1;
3214 return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3215 }
3216
3217
3218 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3219 {
3220 reg->channel[reg->channels] = chan;
3221 reg->channels++;
3222 }
3223
3224
3225 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3226 struct p2p_channels *chan,
3227 struct p2p_channels *cli_chan)
3228 {
3229 int i, cla = 0;
3230
3231 wpa_s->global->p2p_24ghz_social_channels = 1;
3232
3233 os_memset(cli_chan, 0, sizeof(*cli_chan));
3234
3235 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3236 "band");
3237
3238 /* Operating class 81 - 2.4 GHz band channels 1..13 */
3239 chan->reg_class[cla].reg_class = 81;
3240 chan->reg_class[cla].channels = 0;
3241 for (i = 0; i < 11; i++) {
3242 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3243 wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3244 }
3245 if (chan->reg_class[cla].channels)
3246 cla++;
3247
3248 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3249 "band");
3250
3251 /* Operating class 115 - 5 GHz, channels 36-48 */
3252 chan->reg_class[cla].reg_class = 115;
3253 chan->reg_class[cla].channels = 0;
3254 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3255 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3256 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3257 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3258 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3259 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3260 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3261 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3262 if (chan->reg_class[cla].channels)
3263 cla++;
3264
3265 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3266 "band");
3267
3268 /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3269 chan->reg_class[cla].reg_class = 124;
3270 chan->reg_class[cla].channels = 0;
3271 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3272 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3273 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3274 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3275 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3276 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3277 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3278 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3279 if (chan->reg_class[cla].channels)
3280 cla++;
3281
3282 chan->reg_classes = cla;
3283 return 0;
3284 }
3285
3286
3287 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
3288 u16 num_modes,
3289 enum hostapd_hw_mode mode)
3290 {
3291 u16 i;
3292
3293 for (i = 0; i < num_modes; i++) {
3294 if (modes[i].mode == mode)
3295 return &modes[i];
3296 }
3297
3298 return NULL;
3299 }
3300
3301
3302 enum chan_allowed {
3303 NOT_ALLOWED, NO_IR, ALLOWED
3304 };
3305
3306 static int has_channel(struct wpa_global *global,
3307 struct hostapd_hw_modes *mode, u8 chan, int *flags)
3308 {
3309 int i;
3310 unsigned int freq;
3311
3312 freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3313 chan * 5;
3314 if (wpas_p2p_disallowed_freq(global, freq))
3315 return NOT_ALLOWED;
3316
3317 for (i = 0; i < mode->num_channels; i++) {
3318 if (mode->channels[i].chan == chan) {
3319 if (flags)
3320 *flags = mode->channels[i].flag;
3321 if (mode->channels[i].flag &
3322 (HOSTAPD_CHAN_DISABLED |
3323 HOSTAPD_CHAN_RADAR))
3324 return NOT_ALLOWED;
3325 if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR)
3326 return NO_IR;
3327 return ALLOWED;
3328 }
3329 }
3330
3331 return NOT_ALLOWED;
3332 }
3333
3334
3335 struct p2p_oper_class_map {
3336 enum hostapd_hw_mode mode;
3337 u8 op_class;
3338 u8 min_chan;
3339 u8 max_chan;
3340 u8 inc;
3341 enum { BW20, BW40PLUS, BW40MINUS, BW80, BW2160, BW160, BW80P80 } bw;
3342 };
3343
3344 static const struct p2p_oper_class_map op_class[] = {
3345 { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
3346 #if 0 /* Do not enable HT40 on 2 GHz for now */
3347 { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
3348 { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
3349 #endif
3350 { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
3351 { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
3352 { HOSTAPD_MODE_IEEE80211A, 125, 149, 169, 4, BW20 },
3353 { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
3354 { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
3355 { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
3356 { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
3357
3358 /*
3359 * IEEE P802.11ac/D7.0 Table E-4 actually talks about channel center
3360 * frequency index 42, 58, 106, 122, 138, 155 with channel spacing of
3361 * 80 MHz, but currently use the following definition for simplicity
3362 * (these center frequencies are not actual channels, which makes
3363 * has_channel() fail). wpas_p2p_verify_80mhz() should take care of
3364 * removing invalid channels.
3365 */
3366 { HOSTAPD_MODE_IEEE80211A, 128, 36, 161, 4, BW80 },
3367 { HOSTAPD_MODE_IEEE80211A, 130, 36, 161, 4, BW80P80 },
3368 { HOSTAPD_MODE_IEEE80211A, 129, 50, 114, 16, BW160 },
3369 { HOSTAPD_MODE_IEEE80211AD, 180, 1, 4, 1, BW2160 },
3370 { -1, 0, 0, 0, 0, BW20 }
3371 };
3372
3373
3374 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3375 struct hostapd_hw_modes *mode,
3376 u8 channel)
3377 {
3378 u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3379 unsigned int i;
3380
3381 if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3382 return 0;
3383
3384 for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3385 /*
3386 * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3387 * so the center channel is 6 channels away from the start/end.
3388 */
3389 if (channel >= center_channels[i] - 6 &&
3390 channel <= center_channels[i] + 6)
3391 return center_channels[i];
3392
3393 return 0;
3394 }
3395
3396
3397 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3398 struct hostapd_hw_modes *mode,
3399 u8 channel, u8 bw)
3400 {
3401 u8 center_chan;
3402 int i, flags;
3403 enum chan_allowed res, ret = ALLOWED;
3404
3405 center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3406 if (!center_chan)
3407 return NOT_ALLOWED;
3408 if (center_chan >= 58 && center_chan <= 138)
3409 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3410
3411 /* check all the channels are available */
3412 for (i = 0; i < 4; i++) {
3413 int adj_chan = center_chan - 6 + i * 4;
3414
3415 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3416 if (res == NOT_ALLOWED)
3417 return NOT_ALLOWED;
3418 if (res == NO_IR)
3419 ret = NO_IR;
3420
3421 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3422 return NOT_ALLOWED;
3423 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3424 return NOT_ALLOWED;
3425 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3426 return NOT_ALLOWED;
3427 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3428 return NOT_ALLOWED;
3429 }
3430
3431 return ret;
3432 }
3433
3434
3435 static int wpas_p2p_get_center_160mhz(struct wpa_supplicant *wpa_s,
3436 struct hostapd_hw_modes *mode,
3437 u8 channel)
3438 {
3439 u8 center_channels[] = { 50, 114 };
3440 unsigned int i;
3441
3442 if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3443 return 0;
3444
3445 for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3446 /*
3447 * In 160 MHz, the bandwidth "spans" 28 channels (e.g., 36-64),
3448 * so the center channel is 14 channels away from the start/end.
3449 */
3450 if (channel >= center_channels[i] - 14 &&
3451 channel <= center_channels[i] + 14)
3452 return center_channels[i];
3453
3454 return 0;
3455 }
3456
3457
3458 static enum chan_allowed wpas_p2p_verify_160mhz(struct wpa_supplicant *wpa_s,
3459 struct hostapd_hw_modes *mode,
3460 u8 channel, u8 bw)
3461 {
3462 u8 center_chan;
3463 int i, flags;
3464 enum chan_allowed res, ret = ALLOWED;
3465
3466 center_chan = wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3467 if (!center_chan)
3468 return NOT_ALLOWED;
3469 /* VHT 160 MHz uses DFS channels in most countries. */
3470
3471 /* Check all the channels are available */
3472 for (i = 0; i < 8; i++) {
3473 int adj_chan = center_chan - 14 + i * 4;
3474
3475 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3476 if (res == NOT_ALLOWED)
3477 return NOT_ALLOWED;
3478
3479 if (res == NO_IR)
3480 ret = NO_IR;
3481
3482 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_150))
3483 return NOT_ALLOWED;
3484 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_130))
3485 return NOT_ALLOWED;
3486 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_110))
3487 return NOT_ALLOWED;
3488 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_90))
3489 return NOT_ALLOWED;
3490 if (i == 4 && !(flags & HOSTAPD_CHAN_VHT_90_70))
3491 return NOT_ALLOWED;
3492 if (i == 5 && !(flags & HOSTAPD_CHAN_VHT_110_50))
3493 return NOT_ALLOWED;
3494 if (i == 6 && !(flags & HOSTAPD_CHAN_VHT_130_30))
3495 return NOT_ALLOWED;
3496 if (i == 7 && !(flags & HOSTAPD_CHAN_VHT_150_10))
3497 return NOT_ALLOWED;
3498 }
3499
3500 return ret;
3501 }
3502
3503
3504 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3505 struct hostapd_hw_modes *mode,
3506 u8 channel, u8 bw)
3507 {
3508 int flag = 0;
3509 enum chan_allowed res, res2;
3510
3511 res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3512 if (bw == BW40MINUS) {
3513 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3514 return NOT_ALLOWED;
3515 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3516 } else if (bw == BW40PLUS) {
3517 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3518 return NOT_ALLOWED;
3519 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3520 } else if (bw == BW80) {
3521 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3522 } else if (bw == BW160) {
3523 res2 = wpas_p2p_verify_160mhz(wpa_s, mode, channel, bw);
3524 }
3525
3526 if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3527 return NOT_ALLOWED;
3528 if (res == NO_IR || res2 == NO_IR)
3529 return NO_IR;
3530 return res;
3531 }
3532
3533
3534 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3535 struct p2p_channels *chan,
3536 struct p2p_channels *cli_chan)
3537 {
3538 struct hostapd_hw_modes *mode;
3539 int cla, op, cli_cla;
3540
3541 if (wpa_s->hw.modes == NULL) {
3542 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3543 "of all supported channels; assume dualband "
3544 "support");
3545 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3546 }
3547
3548 cla = cli_cla = 0;
3549
3550 for (op = 0; op_class[op].op_class; op++) {
3551 const struct p2p_oper_class_map *o = &op_class[op];
3552 u8 ch;
3553 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3554
3555 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3556 if (mode == NULL)
3557 continue;
3558 if (mode->mode == HOSTAPD_MODE_IEEE80211G)
3559 wpa_s->global->p2p_24ghz_social_channels = 1;
3560 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3561 enum chan_allowed res;
3562 res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3563 if (res == ALLOWED) {
3564 if (reg == NULL) {
3565 wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3566 o->op_class);
3567 reg = &chan->reg_class[cla];
3568 cla++;
3569 reg->reg_class = o->op_class;
3570 }
3571 reg->channel[reg->channels] = ch;
3572 reg->channels++;
3573 } else if (res == NO_IR &&
3574 wpa_s->conf->p2p_add_cli_chan) {
3575 if (cli_reg == NULL) {
3576 wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3577 o->op_class);
3578 cli_reg = &cli_chan->reg_class[cli_cla];
3579 cli_cla++;
3580 cli_reg->reg_class = o->op_class;
3581 }
3582 cli_reg->channel[cli_reg->channels] = ch;
3583 cli_reg->channels++;
3584 }
3585 }
3586 if (reg) {
3587 wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3588 reg->channel, reg->channels);
3589 }
3590 if (cli_reg) {
3591 wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3592 cli_reg->channel, cli_reg->channels);
3593 }
3594 }
3595
3596 chan->reg_classes = cla;
3597 cli_chan->reg_classes = cli_cla;
3598
3599 return 0;
3600 }
3601
3602
3603 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3604 struct hostapd_hw_modes *mode, u8 channel)
3605 {
3606 int op;
3607 enum chan_allowed ret;
3608
3609 for (op = 0; op_class[op].op_class; op++) {
3610 const struct p2p_oper_class_map *o = &op_class[op];
3611 u8 ch;
3612
3613 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3614 if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3615 (o->bw != BW40PLUS && o->bw != BW40MINUS) ||
3616 ch != channel)
3617 continue;
3618 ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3619 if (ret == ALLOWED)
3620 return (o->bw == BW40MINUS) ? -1 : 1;
3621 }
3622 }
3623 return 0;
3624 }
3625
3626
3627 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3628 struct hostapd_hw_modes *mode, u8 channel)
3629 {
3630 if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3631 return 0;
3632
3633 return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3634 }
3635
3636
3637 int wpas_p2p_get_vht160_center(struct wpa_supplicant *wpa_s,
3638 struct hostapd_hw_modes *mode, u8 channel)
3639 {
3640 if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW160))
3641 return 0;
3642 return wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3643 }
3644
3645
3646 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3647 size_t buf_len)
3648 {
3649 struct wpa_supplicant *wpa_s = ctx;
3650
3651 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3652 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3653 break;
3654 }
3655 if (wpa_s == NULL)
3656 return -1;
3657
3658 return wpa_drv_get_noa(wpa_s, buf, buf_len);
3659 }
3660
3661
3662 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3663 const u8 *ssid, size_t ssid_len)
3664 {
3665 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3666 struct wpa_ssid *s = wpa_s->current_ssid;
3667 if (s == NULL)
3668 continue;
3669 if (s->mode != WPAS_MODE_P2P_GO &&
3670 s->mode != WPAS_MODE_AP &&
3671 s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3672 continue;
3673 if (s->ssid_len != ssid_len ||
3674 os_memcmp(ssid, s->ssid, ssid_len) != 0)
3675 continue;
3676 return wpa_s;
3677 }
3678
3679 return NULL;
3680
3681 }
3682
3683
3684 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3685 const u8 *peer_dev_addr)
3686 {
3687 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3688 struct wpa_ssid *ssid = wpa_s->current_ssid;
3689 if (ssid && (ssid->mode != WPAS_MODE_INFRA || !ssid->p2p_group))
3690 continue;
3691 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3692 return wpa_s;
3693 }
3694
3695 return NULL;
3696 }
3697
3698
3699 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3700 {
3701 struct wpa_supplicant *wpa_s = ctx;
3702
3703 return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3704 }
3705
3706
3707 static int wpas_is_concurrent_session_active(void *ctx)
3708 {
3709 struct wpa_supplicant *wpa_s = ctx;
3710 struct wpa_supplicant *ifs;
3711
3712 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3713 if (ifs == wpa_s)
3714 continue;
3715 if (ifs->wpa_state > WPA_ASSOCIATED)
3716 return 1;
3717 }
3718 return 0;
3719 }
3720
3721
3722 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3723 {
3724 struct wpa_supplicant *wpa_s = ctx;
3725 wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3726 }
3727
3728
3729 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
3730 const char *conf_p2p_dev)
3731 {
3732 struct wpa_interface iface;
3733 struct wpa_supplicant *p2pdev_wpa_s;
3734 char ifname[100];
3735 char force_name[100];
3736 int ret;
3737
3738 ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3739 wpa_s->ifname);
3740 if (os_snprintf_error(sizeof(ifname), ret))
3741 return -1;
3742 force_name[0] = '\0';
3743 wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3744 ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3745 force_name, wpa_s->pending_interface_addr, NULL);
3746 if (ret < 0) {
3747 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3748 return ret;
3749 }
3750 os_strlcpy(wpa_s->pending_interface_name, ifname,
3751 sizeof(wpa_s->pending_interface_name));
3752
3753 os_memset(&iface, 0, sizeof(iface));
3754 iface.p2p_mgmt = 1;
3755 iface.ifname = wpa_s->pending_interface_name;
3756 iface.driver = wpa_s->driver->name;
3757 iface.driver_param = wpa_s->conf->driver_param;
3758
3759 /*
3760 * If a P2P Device configuration file was given, use it as the interface
3761 * configuration file (instead of using parent's configuration file.
3762 */
3763 if (conf_p2p_dev) {
3764 iface.confname = conf_p2p_dev;
3765 iface.ctrl_interface = NULL;
3766 } else {
3767 iface.confname = wpa_s->confname;
3768 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3769 }
3770
3771 p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
3772 if (!p2pdev_wpa_s) {
3773 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3774 return -1;
3775 }
3776
3777 wpa_s->pending_interface_name[0] = '\0';
3778 return 0;
3779 }
3780
3781
3782 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3783 const u8 *noa, size_t noa_len)
3784 {
3785 struct wpa_supplicant *wpa_s, *intf = ctx;
3786 char hex[100];
3787
3788 for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3789 if (wpa_s->waiting_presence_resp)
3790 break;
3791 }
3792 if (!wpa_s) {
3793 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3794 return;
3795 }
3796 wpa_s->waiting_presence_resp = 0;
3797
3798 wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3799 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3800 " status=%u noa=%s", MAC2STR(src), status, hex);
3801 }
3802
3803
3804 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid,
3805 size_t ssid_len, u8 *go_dev_addr,
3806 u8 *ret_ssid, size_t *ret_ssid_len,
3807 u8 *intended_iface_addr)
3808 {
3809 struct wpa_supplicant *wpa_s = ctx;
3810 struct wpa_ssid *s;
3811
3812 s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len);
3813 if (s) {
3814 os_memcpy(ret_ssid, s->ssid, s->ssid_len);
3815 *ret_ssid_len = s->ssid_len;
3816 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN);
3817
3818 if (s->mode != WPAS_MODE_P2P_GO) {
3819 os_memset(intended_iface_addr, 0, ETH_ALEN);
3820 } else if (wpas_p2p_create_iface(wpa_s)) {
3821 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO))
3822 return 0;
3823
3824 os_memcpy(intended_iface_addr,
3825 wpa_s->pending_interface_addr, ETH_ALEN);
3826 } else {
3827 os_memcpy(intended_iface_addr, wpa_s->own_addr,
3828 ETH_ALEN);
3829 }
3830 return 1;
3831 }
3832
3833 return 0;
3834 }
3835
3836
3837 static int wpas_get_go_info(void *ctx, u8 *intended_addr,
3838 u8 *ssid, size_t *ssid_len, int *group_iface,
3839 unsigned int *freq)
3840 {
3841 struct wpa_supplicant *wpa_s = ctx;
3842 struct wpa_supplicant *go;
3843 struct wpa_ssid *s;
3844
3845 /*
3846 * group_iface will be set to 1 only if a dedicated interface for P2P
3847 * role is required. First, we try to reuse an active GO. However,
3848 * if it is not present, we will try to reactivate an existing
3849 * persistent group and set group_iface to 1, so the caller will know
3850 * that the pending interface should be used.
3851 */
3852 *group_iface = 0;
3853
3854 if (freq)
3855 *freq = 0;
3856
3857 go = wpas_p2p_get_go_group(wpa_s);
3858 if (!go) {
3859 s = wpas_p2p_get_persistent_go(wpa_s);
3860 *group_iface = wpas_p2p_create_iface(wpa_s);
3861 if (s)
3862 os_memcpy(intended_addr, s->bssid, ETH_ALEN);
3863 else
3864 return 0;
3865 } else {
3866 s = go->current_ssid;
3867 os_memcpy(intended_addr, go->own_addr, ETH_ALEN);
3868 if (freq)
3869 *freq = go->assoc_freq;
3870 }
3871
3872 os_memcpy(ssid, s->ssid, s->ssid_len);
3873 *ssid_len = s->ssid_len;
3874
3875 return 1;
3876 }
3877
3878
3879 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go,
3880 const u8 *ssid, size_t ssid_len)
3881 {
3882 struct wpa_supplicant *wpa_s = ctx;
3883 struct wpa_ssid *s;
3884 int save_config = 0;
3885 size_t i;
3886
3887 /* Start with our first choice of Persistent Groups */
3888 while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) {
3889 if (go && ssid && ssid_len &&
3890 s->ssid_len == ssid_len &&
3891 os_memcmp(go, s->bssid, ETH_ALEN) == 0 &&
3892 os_memcmp(ssid, s->ssid, ssid_len) == 0)
3893 break;
3894
3895 /* Remove stale persistent group */
3896 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) {
3897 wpa_config_remove_network(wpa_s->conf, s->id);
3898 save_config = 1;
3899 continue;
3900 }
3901
3902 for (i = 0; i < s->num_p2p_clients; i++) {
3903 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
3904 peer, ETH_ALEN) != 0)
3905 continue;
3906
3907 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
3908 s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3909 (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3910 break;
3911 }
3912 s->num_p2p_clients--;
3913 save_config = 1;
3914 }
3915
3916 if (save_config)
3917 p2p_config_write(wpa_s);
3918
3919 /* Return TRUE if valid SSID remains */
3920 return s != NULL;
3921 }
3922
3923
3924 static void wpas_p2ps_get_feat_cap_str(char *buf, size_t buf_len,
3925 const u8 *feat_cap, size_t feat_cap_len)
3926 {
3927 static const char pref[] = " feature_cap=";
3928 int ret;
3929
3930 buf[0] = '\0';
3931
3932 /*
3933 * We expect a feature capability to contain at least one byte to be
3934 * reported. The string buffer provided by the caller function is
3935 * expected to be big enough to contain all bytes of the attribute for
3936 * known specifications. This function truncates the reported bytes if
3937 * the feature capability data exceeds the string buffer size.
3938 */
3939 if (!feat_cap || !feat_cap_len || buf_len < sizeof(pref) + 2)
3940 return;
3941
3942 os_memcpy(buf, pref, sizeof(pref));
3943 ret = wpa_snprintf_hex(&buf[sizeof(pref) - 1],
3944 buf_len - sizeof(pref) + 1,
3945 feat_cap, feat_cap_len);
3946
3947 if (ret != (2 * (int) feat_cap_len))
3948 wpa_printf(MSG_WARNING, "P2PS feature_cap bytes truncated");
3949 }
3950
3951
3952 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev,
3953 const u8 *adv_mac, const u8 *ses_mac,
3954 const u8 *grp_mac, u32 adv_id, u32 ses_id,
3955 u8 conncap, int passwd_id,
3956 const u8 *persist_ssid,
3957 size_t persist_ssid_size, int response_done,
3958 int prov_start, const char *session_info,
3959 const u8 *feat_cap, size_t feat_cap_len,
3960 unsigned int freq)
3961 {
3962 struct wpa_supplicant *wpa_s = ctx;
3963 u8 mac[ETH_ALEN];
3964 struct wpa_ssid *persistent_go, *stale, *s = NULL;
3965 int save_config = 0;
3966 struct wpa_supplicant *go_wpa_s;
3967 char feat_cap_str[256];
3968
3969 if (!dev)
3970 return;
3971
3972 os_memset(mac, 0, ETH_ALEN);
3973 if (!adv_mac)
3974 adv_mac = mac;
3975 if (!ses_mac)
3976 ses_mac = mac;
3977 if (!grp_mac)
3978 grp_mac = mac;
3979
3980 wpas_p2ps_get_feat_cap_str(feat_cap_str, sizeof(feat_cap_str),
3981 feat_cap, feat_cap_len);
3982
3983 if (prov_start) {
3984 if (session_info == NULL) {
3985 wpa_msg_global(wpa_s, MSG_INFO,
3986 P2P_EVENT_P2PS_PROVISION_START MACSTR
3987 " adv_id=%x conncap=%x"
3988 " adv_mac=" MACSTR
3989 " session=%x mac=" MACSTR
3990 " dev_passwd_id=%d%s",
3991 MAC2STR(dev), adv_id, conncap,
3992 MAC2STR(adv_mac),
3993 ses_id, MAC2STR(ses_mac),
3994 passwd_id, feat_cap_str);
3995 } else {
3996 wpa_msg_global(wpa_s, MSG_INFO,
3997 P2P_EVENT_P2PS_PROVISION_START MACSTR
3998 " adv_id=%x conncap=%x"
3999 " adv_mac=" MACSTR
4000 " session=%x mac=" MACSTR
4001 " dev_passwd_id=%d info='%s'%s",
4002 MAC2STR(dev), adv_id, conncap,
4003 MAC2STR(adv_mac),
4004 ses_id, MAC2STR(ses_mac),
4005 passwd_id, session_info, feat_cap_str);
4006 }
4007 return;
4008 }
4009
4010 go_wpa_s = wpas_p2p_get_go_group(wpa_s);
4011 persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4012
4013 if (status && status != P2P_SC_SUCCESS_DEFERRED) {
4014 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4015 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4016
4017 if (persistent_go && !persistent_go->num_p2p_clients) {
4018 /* remove empty persistent GO */
4019 wpa_config_remove_network(wpa_s->conf,
4020 persistent_go->id);
4021 }
4022
4023 wpa_msg_global(wpa_s, MSG_INFO,
4024 P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4025 " status=%d"
4026 " adv_id=%x adv_mac=" MACSTR
4027 " session=%x mac=" MACSTR "%s",
4028 MAC2STR(dev), status,
4029 adv_id, MAC2STR(adv_mac),
4030 ses_id, MAC2STR(ses_mac), feat_cap_str);
4031 return;
4032 }
4033
4034 /* Clean up stale persistent groups with this device */
4035 if (persist_ssid && persist_ssid_size)
4036 s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid,
4037 persist_ssid_size);
4038
4039 if (persist_ssid && s && s->mode != WPAS_MODE_P2P_GO &&
4040 is_zero_ether_addr(grp_mac)) {
4041 wpa_dbg(wpa_s, MSG_ERROR,
4042 "P2P: Peer device is a GO in a persistent group, but it did not provide the intended MAC address");
4043 return;
4044 }
4045
4046 for (;;) {
4047 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0);
4048 if (!stale)
4049 break;
4050
4051 if (s && s->ssid_len == stale->ssid_len &&
4052 os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 &&
4053 os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0)
4054 break;
4055
4056 /* Remove stale persistent group */
4057 if (stale->mode != WPAS_MODE_P2P_GO ||
4058 stale->num_p2p_clients <= 1) {
4059 wpa_config_remove_network(wpa_s->conf, stale->id);
4060 } else {
4061 size_t i;
4062
4063 for (i = 0; i < stale->num_p2p_clients; i++) {
4064 if (os_memcmp(stale->p2p_client_list +
4065 i * ETH_ALEN,
4066 dev, ETH_ALEN) == 0) {
4067 os_memmove(stale->p2p_client_list +
4068 i * ETH_ALEN,
4069 stale->p2p_client_list +
4070 (i + 1) * ETH_ALEN,
4071 (stale->num_p2p_clients -
4072 i - 1) * ETH_ALEN);
4073 break;
4074 }
4075 }
4076 stale->num_p2p_clients--;
4077 }
4078 save_config = 1;
4079 }
4080
4081 if (save_config)
4082 p2p_config_write(wpa_s);
4083
4084 if (s) {
4085 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4086 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4087
4088 if (persistent_go && s != persistent_go &&
4089 !persistent_go->num_p2p_clients) {
4090 /* remove empty persistent GO */
4091 wpa_config_remove_network(wpa_s->conf,
4092 persistent_go->id);
4093 /* Save config */
4094 }
4095
4096 wpa_msg_global(wpa_s, MSG_INFO,
4097 P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4098 " status=%d"
4099 " adv_id=%x adv_mac=" MACSTR
4100 " session=%x mac=" MACSTR
4101 " persist=%d%s",
4102 MAC2STR(dev), status,
4103 adv_id, MAC2STR(adv_mac),
4104 ses_id, MAC2STR(ses_mac), s->id, feat_cap_str);
4105 return;
4106 }
4107
4108 if (conncap == P2PS_SETUP_GROUP_OWNER) {
4109 /*
4110 * We need to copy the interface name. Simply saving a
4111 * pointer isn't enough, since if we use pending_interface_name
4112 * it will be overwritten when the group is added.
4113 */
4114 char go_ifname[100];
4115
4116 go_ifname[0] = '\0';
4117 if (!go_wpa_s) {
4118 wpa_s->global->pending_p2ps_group = 1;
4119 wpa_s->global->pending_p2ps_group_freq = freq;
4120
4121 if (!wpas_p2p_create_iface(wpa_s))
4122 os_memcpy(go_ifname, wpa_s->ifname,
4123 sizeof(go_ifname));
4124 else if (wpa_s->pending_interface_name[0])
4125 os_memcpy(go_ifname,
4126 wpa_s->pending_interface_name,
4127 sizeof(go_ifname));
4128
4129 if (!go_ifname[0]) {
4130 wpas_p2ps_prov_complete(
4131 wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP,
4132 dev, adv_mac, ses_mac,
4133 grp_mac, adv_id, ses_id, 0, 0,
4134 NULL, 0, 0, 0, NULL, NULL, 0, 0);
4135 return;
4136 }
4137
4138 /* If PD Resp complete, start up the GO */
4139 if (response_done && persistent_go) {
4140 wpas_p2p_group_add_persistent(
4141 wpa_s, persistent_go,
4142 0, 0, freq, 0, 0, 0, 0, NULL,
4143 persistent_go->mode ==
4144 WPAS_MODE_P2P_GO ?
4145 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
4146 0, 0);
4147 } else if (response_done) {
4148 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0);
4149 }
4150
4151 if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4152 os_memcpy(wpa_s->p2ps_join_addr, grp_mac,
4153 ETH_ALEN);
4154 wpa_s->p2ps_method_config_any = 1;
4155 }
4156 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4157 os_memcpy(go_ifname, go_wpa_s->ifname,
4158 sizeof(go_ifname));
4159
4160 if (is_zero_ether_addr(grp_mac)) {
4161 wpa_dbg(go_wpa_s, MSG_DEBUG,
4162 "P2P: Setting PIN-1 for ANY");
4163 wpa_supplicant_ap_wps_pin(go_wpa_s, NULL,
4164 "12345670", NULL, 0,
4165 0);
4166 } else {
4167 wpa_dbg(go_wpa_s, MSG_DEBUG,
4168 "P2P: Setting PIN-1 for " MACSTR,
4169 MAC2STR(grp_mac));
4170 wpa_supplicant_ap_wps_pin(go_wpa_s, grp_mac,
4171 "12345670", NULL, 0,
4172 0);
4173 }
4174
4175 os_memcpy(wpa_s->p2ps_join_addr, grp_mac, ETH_ALEN);
4176 wpa_s->p2ps_method_config_any = 1;
4177 }
4178
4179 wpa_msg_global(wpa_s, MSG_INFO,
4180 P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4181 " status=%d conncap=%x"
4182 " adv_id=%x adv_mac=" MACSTR
4183 " session=%x mac=" MACSTR
4184 " dev_passwd_id=%d go=%s%s",
4185 MAC2STR(dev), status, conncap,
4186 adv_id, MAC2STR(adv_mac),
4187 ses_id, MAC2STR(ses_mac),
4188 passwd_id, go_ifname, feat_cap_str);
4189 return;
4190 }
4191
4192 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4193 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4194
4195 if (persistent_go && !persistent_go->num_p2p_clients) {
4196 /* remove empty persistent GO */
4197 wpa_config_remove_network(wpa_s->conf, persistent_go->id);
4198 }
4199
4200 if (conncap == P2PS_SETUP_CLIENT) {
4201 wpa_msg_global(wpa_s, MSG_INFO,
4202 P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4203 " status=%d conncap=%x"
4204 " adv_id=%x adv_mac=" MACSTR
4205 " session=%x mac=" MACSTR
4206 " dev_passwd_id=%d join=" MACSTR "%s",
4207 MAC2STR(dev), status, conncap,
4208 adv_id, MAC2STR(adv_mac),
4209 ses_id, MAC2STR(ses_mac),
4210 passwd_id, MAC2STR(grp_mac), feat_cap_str);
4211 } else {
4212 wpa_msg_global(wpa_s, MSG_INFO,
4213 P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4214 " status=%d conncap=%x"
4215 " adv_id=%x adv_mac=" MACSTR
4216 " session=%x mac=" MACSTR
4217 " dev_passwd_id=%d%s",
4218 MAC2STR(dev), status, conncap,
4219 adv_id, MAC2STR(adv_mac),
4220 ses_id, MAC2STR(ses_mac),
4221 passwd_id, feat_cap_str);
4222 }
4223 }
4224
4225
4226 static int _wpas_p2p_in_progress(void *ctx)
4227 {
4228 struct wpa_supplicant *wpa_s = ctx;
4229 return wpas_p2p_in_progress(wpa_s);
4230 }
4231
4232
4233 static int wpas_prov_disc_resp_cb(void *ctx)
4234 {
4235 struct wpa_supplicant *wpa_s = ctx;
4236 struct wpa_ssid *persistent_go;
4237 unsigned int freq;
4238
4239 if (!wpa_s->global->pending_p2ps_group)
4240 return 0;
4241
4242 freq = wpa_s->global->pending_p2ps_group_freq;
4243 wpa_s->global->pending_p2ps_group_freq = 0;
4244 wpa_s->global->pending_p2ps_group = 0;
4245
4246 if (wpas_p2p_get_go_group(wpa_s))
4247 return 0;
4248 persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4249
4250 if (persistent_go) {
4251 wpas_p2p_group_add_persistent(
4252 wpa_s, persistent_go, 0, 0, 0, 0, 0, 0, 0, NULL,
4253 persistent_go->mode == WPAS_MODE_P2P_GO ?
4254 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 0);
4255 } else {
4256 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0);
4257 }
4258
4259 return 1;
4260 }
4261
4262
4263 static int wpas_p2p_get_pref_freq_list(void *ctx, int go,
4264 unsigned int *len,
4265 unsigned int *freq_list)
4266 {
4267 struct wpa_supplicant *wpa_s = ctx;
4268
4269 return wpa_drv_get_pref_freq_list(wpa_s, go ? WPA_IF_P2P_GO :
4270 WPA_IF_P2P_CLIENT, len, freq_list);
4271 }
4272
4273
4274 /**
4275 * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
4276 * @global: Pointer to global data from wpa_supplicant_init()
4277 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4278 * Returns: 0 on success, -1 on failure
4279 */
4280 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
4281 {
4282 struct p2p_config p2p;
4283 int i;
4284
4285 if (wpa_s->conf->p2p_disabled)
4286 return 0;
4287
4288 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4289 return 0;
4290
4291 if (global->p2p)
4292 return 0;
4293
4294 os_memset(&p2p, 0, sizeof(p2p));
4295 p2p.cb_ctx = wpa_s;
4296 p2p.debug_print = wpas_p2p_debug_print;
4297 p2p.p2p_scan = wpas_p2p_scan;
4298 p2p.send_action = wpas_send_action;
4299 p2p.send_action_done = wpas_send_action_done;
4300 p2p.go_neg_completed = wpas_go_neg_completed;
4301 p2p.go_neg_req_rx = wpas_go_neg_req_rx;
4302 p2p.dev_found = wpas_dev_found;
4303 p2p.dev_lost = wpas_dev_lost;
4304 p2p.find_stopped = wpas_find_stopped;
4305 p2p.start_listen = wpas_start_listen;
4306 p2p.stop_listen = wpas_stop_listen;
4307 p2p.send_probe_resp = wpas_send_probe_resp;
4308 p2p.sd_request = wpas_sd_request;
4309 p2p.sd_response = wpas_sd_response;
4310 p2p.prov_disc_req = wpas_prov_disc_req;
4311 p2p.prov_disc_resp = wpas_prov_disc_resp;
4312 p2p.prov_disc_fail = wpas_prov_disc_fail;
4313 p2p.invitation_process = wpas_invitation_process;
4314 p2p.invitation_received = wpas_invitation_received;
4315 p2p.invitation_result = wpas_invitation_result;
4316 p2p.get_noa = wpas_get_noa;
4317 p2p.go_connected = wpas_go_connected;
4318 p2p.presence_resp = wpas_presence_resp;
4319 p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
4320 p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
4321 p2p.get_persistent_group = wpas_get_persistent_group;
4322 p2p.get_go_info = wpas_get_go_info;
4323 p2p.remove_stale_groups = wpas_remove_stale_groups;
4324 p2p.p2ps_prov_complete = wpas_p2ps_prov_complete;
4325 p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb;
4326 p2p.p2ps_group_capability = p2ps_group_capability;
4327 p2p.get_pref_freq_list = wpas_p2p_get_pref_freq_list;
4328
4329 os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
4330 os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
4331 p2p.dev_name = wpa_s->conf->device_name;
4332 p2p.manufacturer = wpa_s->conf->manufacturer;
4333 p2p.model_name = wpa_s->conf->model_name;
4334 p2p.model_number = wpa_s->conf->model_number;
4335 p2p.serial_number = wpa_s->conf->serial_number;
4336 if (wpa_s->wps) {
4337 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
4338 p2p.config_methods = wpa_s->wps->config_methods;
4339 }
4340
4341 if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
4342 wpa_printf(MSG_ERROR,
4343 "P2P: Failed to configure supported channel list");
4344 return -1;
4345 }
4346
4347 if (wpa_s->conf->p2p_listen_reg_class &&
4348 wpa_s->conf->p2p_listen_channel) {
4349 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
4350 p2p.channel = wpa_s->conf->p2p_listen_channel;
4351 p2p.channel_forced = 1;
4352 } else {
4353 /*
4354 * Pick one of the social channels randomly as the listen
4355 * channel.
4356 */
4357 if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
4358 &p2p.channel) != 0) {
4359 wpa_printf(MSG_INFO,
4360 "P2P: No social channels supported by the driver - do not enable P2P");
4361 return 0;
4362 }
4363 p2p.channel_forced = 0;
4364 }
4365 wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
4366 p2p.reg_class, p2p.channel);
4367
4368 if (wpa_s->conf->p2p_oper_reg_class &&
4369 wpa_s->conf->p2p_oper_channel) {
4370 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4371 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
4372 p2p.cfg_op_channel = 1;
4373 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
4374 "%d:%d", p2p.op_reg_class, p2p.op_channel);
4375
4376 } else {
4377 /*
4378 * Use random operation channel from 2.4 GHz band social
4379 * channels (1, 6, 11) or band 60 GHz social channel (2) if no
4380 * other preference is indicated.
4381 */
4382 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
4383 &p2p.op_channel) != 0) {
4384 wpa_printf(MSG_ERROR,
4385 "P2P: Failed to select random social channel as operation channel");
4386 return -1;
4387 }
4388 p2p.cfg_op_channel = 0;
4389 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
4390 "%d:%d", p2p.op_reg_class, p2p.op_channel);
4391 }
4392
4393 if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
4394 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
4395 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
4396 }
4397
4398 if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4399 os_memcpy(p2p.country, wpa_s->conf->country, 2);
4400 p2p.country[2] = 0x04;
4401 } else
4402 os_memcpy(p2p.country, "XX\x04", 3);
4403
4404 os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
4405 WPS_DEV_TYPE_LEN);
4406
4407 p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
4408 os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
4409 p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
4410
4411 p2p.concurrent_operations = !!(wpa_s->drv_flags &
4412 WPA_DRIVER_FLAGS_P2P_CONCURRENT);
4413
4414 p2p.max_peers = 100;
4415
4416 if (wpa_s->conf->p2p_ssid_postfix) {
4417 p2p.ssid_postfix_len =
4418 os_strlen(wpa_s->conf->p2p_ssid_postfix);
4419 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
4420 p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
4421 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
4422 p2p.ssid_postfix_len);
4423 }
4424
4425 p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
4426
4427 p2p.max_listen = wpa_s->max_remain_on_chan;
4428
4429 if (wpa_s->conf->p2p_passphrase_len >= 8 &&
4430 wpa_s->conf->p2p_passphrase_len <= 63)
4431 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4432 else
4433 p2p.passphrase_len = 8;
4434
4435 global->p2p = p2p_init(&p2p);
4436 if (global->p2p == NULL)
4437 return -1;
4438 global->p2p_init_wpa_s = wpa_s;
4439
4440 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4441 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4442 continue;
4443 p2p_add_wps_vendor_extension(
4444 global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4445 }
4446
4447 p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4448
4449 return 0;
4450 }
4451
4452
4453 /**
4454 * wpas_p2p_deinit - Deinitialize per-interface P2P data
4455 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4456 *
4457 * This function deinitialize per-interface P2P data.
4458 */
4459 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4460 {
4461 if (wpa_s->driver && wpa_s->drv_priv)
4462 wpa_drv_probe_req_report(wpa_s, 0);
4463
4464 if (wpa_s->go_params) {
4465 /* Clear any stored provisioning info */
4466 p2p_clear_provisioning_info(
4467 wpa_s->global->p2p,
4468 wpa_s->go_params->peer_device_addr);
4469 }
4470
4471 os_free(wpa_s->go_params);
4472 wpa_s->go_params = NULL;
4473 eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4474 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4475 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4476 wpa_s->p2p_long_listen = 0;
4477 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4478 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4479 wpas_p2p_remove_pending_group_interface(wpa_s);
4480 eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4481 wpas_p2p_listen_work_done(wpa_s);
4482 if (wpa_s->p2p_send_action_work) {
4483 os_free(wpa_s->p2p_send_action_work->ctx);
4484 radio_work_done(wpa_s->p2p_send_action_work);
4485 wpa_s->p2p_send_action_work = NULL;
4486 }
4487 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4488
4489 wpabuf_free(wpa_s->p2p_oob_dev_pw);
4490 wpa_s->p2p_oob_dev_pw = NULL;
4491
4492 os_free(wpa_s->p2p_group_common_freqs);
4493 wpa_s->p2p_group_common_freqs = NULL;
4494 wpa_s->p2p_group_common_freqs_num = 0;
4495
4496 /* TODO: remove group interface from the driver if this wpa_s instance
4497 * is on top of a P2P group interface */
4498 }
4499
4500
4501 /**
4502 * wpas_p2p_deinit_global - Deinitialize global P2P module
4503 * @global: Pointer to global data from wpa_supplicant_init()
4504 *
4505 * This function deinitializes the global (per device) P2P module.
4506 */
4507 static void wpas_p2p_deinit_global(struct wpa_global *global)
4508 {
4509 struct wpa_supplicant *wpa_s, *tmp;
4510
4511 wpa_s = global->ifaces;
4512
4513 wpas_p2p_service_flush(global->p2p_init_wpa_s);
4514
4515 /* Remove remaining P2P group interfaces */
4516 while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4517 wpa_s = wpa_s->next;
4518 while (wpa_s) {
4519 tmp = global->ifaces;
4520 while (tmp &&
4521 (tmp == wpa_s ||
4522 tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4523 tmp = tmp->next;
4524 }
4525 if (tmp == NULL)
4526 break;
4527 /* Disconnect from the P2P group and deinit the interface */
4528 wpas_p2p_disconnect(tmp);
4529 }
4530
4531 /*
4532 * Deinit GO data on any possibly remaining interface (if main
4533 * interface is used as GO).
4534 */
4535 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4536 if (wpa_s->ap_iface)
4537 wpas_p2p_group_deinit(wpa_s);
4538 }
4539
4540 p2p_deinit(global->p2p);
4541 global->p2p = NULL;
4542 global->p2p_init_wpa_s = NULL;
4543 }
4544
4545
4546 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4547 {
4548 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
4549 wpa_s->conf->p2p_no_group_iface)
4550 return 0; /* separate interface disabled per configuration */
4551 if (wpa_s->drv_flags &
4552 (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4553 WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4554 return 1; /* P2P group requires a new interface in every case
4555 */
4556 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4557 return 0; /* driver does not support concurrent operations */
4558 if (wpa_s->global->ifaces->next)
4559 return 1; /* more that one interface already in use */
4560 if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4561 return 1; /* this interface is already in use */
4562 return 0;
4563 }
4564
4565
4566 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4567 const u8 *peer_addr,
4568 enum p2p_wps_method wps_method,
4569 int go_intent, const u8 *own_interface_addr,
4570 unsigned int force_freq, int persistent_group,
4571 struct wpa_ssid *ssid, unsigned int pref_freq)
4572 {
4573 if (persistent_group && wpa_s->conf->persistent_reconnect)
4574 persistent_group = 2;
4575
4576 /*
4577 * Increase GO config timeout if HT40 is used since it takes some time
4578 * to scan channels for coex purposes before the BSS can be started.
4579 */
4580 p2p_set_config_timeout(wpa_s->global->p2p,
4581 wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4582
4583 return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4584 go_intent, own_interface_addr, force_freq,
4585 persistent_group, ssid ? ssid->ssid : NULL,
4586 ssid ? ssid->ssid_len : 0,
4587 wpa_s->p2p_pd_before_go_neg, pref_freq,
4588 wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4589 0);
4590 }
4591
4592
4593 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4594 const u8 *peer_addr,
4595 enum p2p_wps_method wps_method,
4596 int go_intent, const u8 *own_interface_addr,
4597 unsigned int force_freq, int persistent_group,
4598 struct wpa_ssid *ssid, unsigned int pref_freq)
4599 {
4600 if (persistent_group && wpa_s->conf->persistent_reconnect)
4601 persistent_group = 2;
4602
4603 return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4604 go_intent, own_interface_addr, force_freq,
4605 persistent_group, ssid ? ssid->ssid : NULL,
4606 ssid ? ssid->ssid_len : 0, pref_freq,
4607 wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4608 0);
4609 }
4610
4611
4612 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4613 {
4614 wpa_s->p2p_join_scan_count++;
4615 wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4616 wpa_s->p2p_join_scan_count);
4617 if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4618 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4619 " for join operationg - stop join attempt",
4620 MAC2STR(wpa_s->pending_join_iface_addr));
4621 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4622 if (wpa_s->p2p_auto_pd) {
4623 wpa_s->p2p_auto_pd = 0;
4624 wpa_msg_global(wpa_s, MSG_INFO,
4625 P2P_EVENT_PROV_DISC_FAILURE
4626 " p2p_dev_addr=" MACSTR " status=N/A",
4627 MAC2STR(wpa_s->pending_join_dev_addr));
4628 return;
4629 }
4630 wpa_msg_global(wpa_s->parent, MSG_INFO,
4631 P2P_EVENT_GROUP_FORMATION_FAILURE);
4632 wpas_notify_p2p_group_formation_failure(wpa_s, "");
4633 }
4634 }
4635
4636
4637 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4638 {
4639 int res;
4640 unsigned int num, i;
4641 struct wpa_used_freq_data *freqs;
4642
4643 if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4644 /* Multiple channels are supported and not all are in use */
4645 return 0;
4646 }
4647
4648 freqs = os_calloc(wpa_s->num_multichan_concurrent,
4649 sizeof(struct wpa_used_freq_data));
4650 if (!freqs)
4651 return 1;
4652
4653 num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4654 wpa_s->num_multichan_concurrent);
4655
4656 for (i = 0; i < num; i++) {
4657 if (freqs[i].freq == freq) {
4658 wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4659 freq);
4660 res = 0;
4661 goto exit_free;
4662 }
4663 }
4664
4665 wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4666 res = 1;
4667
4668 exit_free:
4669 os_free(freqs);
4670 return res;
4671 }
4672
4673
4674 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4675 const u8 *peer_dev_addr)
4676 {
4677 struct wpa_bss *bss;
4678 int updated;
4679
4680 bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4681 if (bss == NULL)
4682 return -1;
4683 if (bss->last_update_idx < wpa_s->bss_update_idx) {
4684 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4685 "last scan");
4686 return 0;
4687 }
4688
4689 updated = os_reltime_before(&wpa_s->p2p_auto_started,
4690 &bss->last_update);
4691 wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4692 "%ld.%06ld (%supdated in last scan)",
4693 bss->last_update.sec, bss->last_update.usec,
4694 updated ? "": "not ");
4695
4696 return updated;
4697 }
4698
4699
4700 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4701 struct wpa_scan_results *scan_res)
4702 {
4703 struct wpa_bss *bss = NULL;
4704 int freq;
4705 u8 iface_addr[ETH_ALEN];
4706
4707 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4708
4709 if (wpa_s->global->p2p_disabled)
4710 return;
4711
4712 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4713 scan_res ? (int) scan_res->num : -1,
4714 wpa_s->p2p_auto_join ? "auto_" : "");
4715
4716 if (scan_res)
4717 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4718
4719 if (wpa_s->p2p_auto_pd) {
4720 int join = wpas_p2p_peer_go(wpa_s,
4721 wpa_s->pending_join_dev_addr);
4722 if (join == 0 &&
4723 wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4724 wpa_s->auto_pd_scan_retry++;
4725 bss = wpa_bss_get_bssid_latest(
4726 wpa_s, wpa_s->pending_join_dev_addr);
4727 if (bss) {
4728 freq = bss->freq;
4729 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4730 "the peer " MACSTR " at %d MHz",
4731 wpa_s->auto_pd_scan_retry,
4732 MAC2STR(wpa_s->
4733 pending_join_dev_addr),
4734 freq);
4735 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4736 return;
4737 }
4738 }
4739
4740 if (join < 0)
4741 join = 0;
4742
4743 wpa_s->p2p_auto_pd = 0;
4744 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4745 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4746 MAC2STR(wpa_s->pending_join_dev_addr), join);
4747 if (p2p_prov_disc_req(wpa_s->global->p2p,
4748 wpa_s->pending_join_dev_addr, NULL,
4749 wpa_s->pending_pd_config_methods, join,
4750 0, wpa_s->user_initiated_pd) < 0) {
4751 wpa_s->p2p_auto_pd = 0;
4752 wpa_msg_global(wpa_s, MSG_INFO,
4753 P2P_EVENT_PROV_DISC_FAILURE
4754 " p2p_dev_addr=" MACSTR " status=N/A",
4755 MAC2STR(wpa_s->pending_join_dev_addr));
4756 }
4757 return;
4758 }
4759
4760 if (wpa_s->p2p_auto_join) {
4761 int join = wpas_p2p_peer_go(wpa_s,
4762 wpa_s->pending_join_dev_addr);
4763 if (join < 0) {
4764 wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4765 "running a GO -> use GO Negotiation");
4766 wpa_msg_global(wpa_s->parent, MSG_INFO,
4767 P2P_EVENT_FALLBACK_TO_GO_NEG
4768 "reason=peer-not-running-GO");
4769 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4770 wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4771 wpa_s->p2p_persistent_group, 0, 0, 0,
4772 wpa_s->p2p_go_intent,
4773 wpa_s->p2p_connect_freq,
4774 wpa_s->p2p_go_vht_center_freq2,
4775 wpa_s->p2p_persistent_id,
4776 wpa_s->p2p_pd_before_go_neg,
4777 wpa_s->p2p_go_ht40,
4778 wpa_s->p2p_go_vht,
4779 wpa_s->p2p_go_max_oper_chwidth);
4780 return;
4781 }
4782
4783 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4784 "try to join the group", join ? "" :
4785 " in older scan");
4786 if (!join) {
4787 wpa_msg_global(wpa_s->parent, MSG_INFO,
4788 P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED);
4789 wpa_s->p2p_fallback_to_go_neg = 1;
4790 }
4791 }
4792
4793 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4794 wpa_s->pending_join_iface_addr);
4795 if (freq < 0 &&
4796 p2p_get_interface_addr(wpa_s->global->p2p,
4797 wpa_s->pending_join_dev_addr,
4798 iface_addr) == 0 &&
4799 os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
4800 && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
4801 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4802 "address for join from " MACSTR " to " MACSTR
4803 " based on newly discovered P2P peer entry",
4804 MAC2STR(wpa_s->pending_join_iface_addr),
4805 MAC2STR(iface_addr));
4806 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4807 ETH_ALEN);
4808
4809 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4810 wpa_s->pending_join_iface_addr);
4811 }
4812 if (freq >= 0) {
4813 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4814 "from P2P peer table: %d MHz", freq);
4815 }
4816 if (wpa_s->p2p_join_ssid_len) {
4817 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4818 MACSTR " and SSID %s",
4819 MAC2STR(wpa_s->pending_join_iface_addr),
4820 wpa_ssid_txt(wpa_s->p2p_join_ssid,
4821 wpa_s->p2p_join_ssid_len));
4822 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4823 wpa_s->p2p_join_ssid,
4824 wpa_s->p2p_join_ssid_len);
4825 }
4826 if (!bss) {
4827 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4828 MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4829 bss = wpa_bss_get_bssid_latest(wpa_s,
4830 wpa_s->pending_join_iface_addr);
4831 }
4832 if (bss) {
4833 u8 dev_addr[ETH_ALEN];
4834
4835 freq = bss->freq;
4836 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4837 "from BSS table: %d MHz (SSID %s)", freq,
4838 wpa_ssid_txt(bss->ssid, bss->ssid_len));
4839 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len,
4840 dev_addr) == 0 &&
4841 os_memcmp(wpa_s->pending_join_dev_addr,
4842 wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 &&
4843 os_memcmp(dev_addr, wpa_s->pending_join_dev_addr,
4844 ETH_ALEN) != 0) {
4845 wpa_printf(MSG_DEBUG,
4846 "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")",
4847 MAC2STR(dev_addr),
4848 MAC2STR(wpa_s->pending_join_dev_addr));
4849 os_memcpy(wpa_s->pending_join_dev_addr, dev_addr,
4850 ETH_ALEN);
4851 }
4852 }
4853 if (freq > 0) {
4854 u16 method;
4855
4856 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4857 wpa_msg_global(wpa_s->parent, MSG_INFO,
4858 P2P_EVENT_GROUP_FORMATION_FAILURE
4859 "reason=FREQ_CONFLICT");
4860 wpas_notify_p2p_group_formation_failure(
4861 wpa_s, "FREQ_CONFLICT");
4862 return;
4863 }
4864
4865 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4866 "prior to joining an existing group (GO " MACSTR
4867 " freq=%u MHz)",
4868 MAC2STR(wpa_s->pending_join_dev_addr), freq);
4869 wpa_s->pending_pd_before_join = 1;
4870
4871 switch (wpa_s->pending_join_wps_method) {
4872 case WPS_PIN_DISPLAY:
4873 method = WPS_CONFIG_KEYPAD;
4874 break;
4875 case WPS_PIN_KEYPAD:
4876 method = WPS_CONFIG_DISPLAY;
4877 break;
4878 case WPS_PBC:
4879 method = WPS_CONFIG_PUSHBUTTON;
4880 break;
4881 case WPS_P2PS:
4882 method = WPS_CONFIG_P2PS;
4883 break;
4884 default:
4885 method = 0;
4886 break;
4887 }
4888
4889 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4890 wpa_s->pending_join_dev_addr) ==
4891 method)) {
4892 /*
4893 * We have already performed provision discovery for
4894 * joining the group. Proceed directly to join
4895 * operation without duplicated provision discovery. */
4896 wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4897 "with " MACSTR " already done - proceed to "
4898 "join",
4899 MAC2STR(wpa_s->pending_join_dev_addr));
4900 wpa_s->pending_pd_before_join = 0;
4901 goto start;
4902 }
4903
4904 if (p2p_prov_disc_req(wpa_s->global->p2p,
4905 wpa_s->pending_join_dev_addr,
4906 NULL, method, 1,
4907 freq, wpa_s->user_initiated_pd) < 0) {
4908 wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4909 "Discovery Request before joining an "
4910 "existing group");
4911 wpa_s->pending_pd_before_join = 0;
4912 goto start;
4913 }
4914 return;
4915 }
4916
4917 wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4918 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4919 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4920 wpas_p2p_check_join_scan_limit(wpa_s);
4921 return;
4922
4923 start:
4924 /* Start join operation immediately */
4925 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
4926 }
4927
4928
4929 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4930 const u8 *ssid, size_t ssid_len)
4931 {
4932 int ret;
4933 struct wpa_driver_scan_params params;
4934 struct wpabuf *wps_ie, *ies;
4935 size_t ielen;
4936 int freqs[2] = { 0, 0 };
4937
4938 os_memset(&params, 0, sizeof(params));
4939
4940 /* P2P Wildcard SSID */
4941 params.num_ssids = 1;
4942 if (ssid && ssid_len) {
4943 params.ssids[0].ssid = ssid;
4944 params.ssids[0].ssid_len = ssid_len;
4945 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4946 wpa_s->p2p_join_ssid_len = ssid_len;
4947 } else {
4948 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4949 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4950 wpa_s->p2p_join_ssid_len = 0;
4951 }
4952
4953 wpa_s->wps->dev.p2p = 1;
4954 wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4955 wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4956 NULL);
4957 if (wps_ie == NULL) {
4958 wpas_p2p_scan_res_join(wpa_s, NULL);
4959 return;
4960 }
4961
4962 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4963 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4964 if (ies == NULL) {
4965 wpabuf_free(wps_ie);
4966 wpas_p2p_scan_res_join(wpa_s, NULL);
4967 return;
4968 }
4969 wpabuf_put_buf(ies, wps_ie);
4970 wpabuf_free(wps_ie);
4971
4972 p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4973
4974 params.p2p_probe = 1;
4975 params.extra_ies = wpabuf_head(ies);
4976 params.extra_ies_len = wpabuf_len(ies);
4977
4978 if (!freq) {
4979 int oper_freq;
4980 /*
4981 * If freq is not provided, check the operating freq of the GO
4982 * and use a single channel scan on if possible.
4983 */
4984 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4985 wpa_s->pending_join_iface_addr);
4986 if (oper_freq > 0)
4987 freq = oper_freq;
4988 }
4989 if (freq > 0) {
4990 freqs[0] = freq;
4991 params.freqs = freqs;
4992 }
4993
4994 /*
4995 * Run a scan to update BSS table and start Provision Discovery once
4996 * the new scan results become available.
4997 */
4998 ret = wpa_drv_scan(wpa_s, &params);
4999 if (!ret) {
5000 os_get_reltime(&wpa_s->scan_trigger_time);
5001 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
5002 wpa_s->own_scan_requested = 1;
5003 }
5004
5005 wpabuf_free(ies);
5006
5007 if (ret) {
5008 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
5009 "try again later");
5010 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5011 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
5012 wpas_p2p_check_join_scan_limit(wpa_s);
5013 }
5014 }
5015
5016
5017 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
5018 {
5019 struct wpa_supplicant *wpa_s = eloop_ctx;
5020 wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
5021 }
5022
5023
5024 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
5025 const u8 *dev_addr, enum p2p_wps_method wps_method,
5026 int auto_join, int op_freq,
5027 const u8 *ssid, size_t ssid_len)
5028 {
5029 wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
5030 MACSTR " dev " MACSTR " op_freq=%d)%s",
5031 MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
5032 auto_join ? " (auto_join)" : "");
5033 if (ssid && ssid_len) {
5034 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
5035 wpa_ssid_txt(ssid, ssid_len));
5036 }
5037
5038 wpa_s->p2p_auto_pd = 0;
5039 wpa_s->p2p_auto_join = !!auto_join;
5040 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
5041 os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
5042 wpa_s->pending_join_wps_method = wps_method;
5043
5044 /* Make sure we are not running find during connection establishment */
5045 wpas_p2p_stop_find(wpa_s);
5046
5047 wpa_s->p2p_join_scan_count = 0;
5048 wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
5049 return 0;
5050 }
5051
5052
5053 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
5054 const u8 *ssid, size_t ssid_len)
5055 {
5056 struct wpa_supplicant *group;
5057 struct p2p_go_neg_results res;
5058 struct wpa_bss *bss;
5059
5060 group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
5061 if (group == NULL)
5062 return -1;
5063 if (group != wpa_s) {
5064 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
5065 sizeof(group->p2p_pin));
5066 group->p2p_wps_method = wpa_s->p2p_wps_method;
5067 } else {
5068 /*
5069 * Need to mark the current interface for p2p_group_formation
5070 * when a separate group interface is not used. This is needed
5071 * to allow p2p_cancel stop a pending p2p_connect-join.
5072 * wpas_p2p_init_group_interface() addresses this for the case
5073 * where a separate group interface is used.
5074 */
5075 wpa_s->global->p2p_group_formation = wpa_s;
5076 }
5077
5078 group->p2p_in_provisioning = 1;
5079 group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
5080
5081 os_memset(&res, 0, sizeof(res));
5082 os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
5083 os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
5084 ETH_ALEN);
5085 res.wps_method = wpa_s->pending_join_wps_method;
5086 if (freq && ssid && ssid_len) {
5087 res.freq = freq;
5088 res.ssid_len = ssid_len;
5089 os_memcpy(res.ssid, ssid, ssid_len);
5090 } else {
5091 bss = wpa_bss_get_bssid_latest(wpa_s,
5092 wpa_s->pending_join_iface_addr);
5093 if (bss) {
5094 res.freq = bss->freq;
5095 res.ssid_len = bss->ssid_len;
5096 os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
5097 wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
5098 bss->freq,
5099 wpa_ssid_txt(bss->ssid, bss->ssid_len));
5100 }
5101 }
5102
5103 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
5104 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
5105 "starting client");
5106 wpa_drv_cancel_remain_on_channel(wpa_s);
5107 wpa_s->off_channel_freq = 0;
5108 wpa_s->roc_waiting_drv_freq = 0;
5109 }
5110 wpas_start_wps_enrollee(group, &res);
5111
5112 /*
5113 * Allow a longer timeout for join-a-running-group than normal 15
5114 * second group formation timeout since the GO may not have authorized
5115 * our connection yet.
5116 */
5117 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
5118 eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
5119 wpa_s, NULL);
5120
5121 return 0;
5122 }
5123
5124
5125 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
5126 int *force_freq, int *pref_freq, int go,
5127 unsigned int *pref_freq_list,
5128 unsigned int *num_pref_freq)
5129 {
5130 struct wpa_used_freq_data *freqs;
5131 int res, best_freq, num_unused;
5132 unsigned int freq_in_use = 0, num, i, max_pref_freq;
5133
5134 max_pref_freq = *num_pref_freq;
5135 *num_pref_freq = 0;
5136
5137 freqs = os_calloc(wpa_s->num_multichan_concurrent,
5138 sizeof(struct wpa_used_freq_data));
5139 if (!freqs)
5140 return -1;
5141
5142 num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5143 wpa_s->num_multichan_concurrent);
5144
5145 /*
5146 * It is possible that the total number of used frequencies is bigger
5147 * than the number of frequencies used for P2P, so get the system wide
5148 * number of unused frequencies.
5149 */
5150 num_unused = wpas_p2p_num_unused_channels(wpa_s);
5151
5152 wpa_printf(MSG_DEBUG,
5153 "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
5154 freq, wpa_s->num_multichan_concurrent, num, num_unused);
5155
5156 if (freq > 0) {
5157 int ret;
5158 if (go)
5159 ret = p2p_supported_freq(wpa_s->global->p2p, freq);
5160 else
5161 ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
5162 if (!ret) {
5163 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5164 ieee80211_is_dfs(freq)) {
5165 /*
5166 * If freq is a DFS channel and DFS is offloaded
5167 * to the driver, allow P2P GO to use it.
5168 */
5169 wpa_printf(MSG_DEBUG,
5170 "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver",
5171 freq);
5172 } else {
5173 wpa_printf(MSG_DEBUG,
5174 "P2P: The forced channel (%u MHz) is not supported for P2P uses",
5175 freq);
5176 res = -3;
5177 goto exit_free;
5178 }
5179 }
5180
5181 for (i = 0; i < num; i++) {
5182 if (freqs[i].freq == freq)
5183 freq_in_use = 1;
5184 }
5185
5186 if (num_unused <= 0 && !freq_in_use) {
5187 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
5188 freq);
5189 res = -2;
5190 goto exit_free;
5191 }
5192 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
5193 "requested channel (%u MHz)", freq);
5194 *force_freq = freq;
5195 goto exit_ok;
5196 }
5197
5198 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5199
5200 if (!wpa_s->conf->num_p2p_pref_chan && *pref_freq == 0) {
5201 enum wpa_driver_if_type iface_type;
5202
5203 if (go)
5204 iface_type = WPA_IF_P2P_GO;
5205 else
5206 iface_type = WPA_IF_P2P_CLIENT;
5207
5208 wpa_printf(MSG_DEBUG, "P2P: best_freq=%d, go=%d",
5209 best_freq, go);
5210
5211 res = wpa_drv_get_pref_freq_list(wpa_s, iface_type,
5212 &max_pref_freq,
5213 pref_freq_list);
5214 if (!res && max_pref_freq > 0) {
5215 *num_pref_freq = max_pref_freq;
5216 i = 0;
5217 while (wpas_p2p_disallowed_freq(wpa_s->global,
5218 pref_freq_list[i]) &&
5219 i < *num_pref_freq) {
5220 wpa_printf(MSG_DEBUG,
5221 "P2P: preferred_freq_list[%d]=%d is disallowed",
5222 i, pref_freq_list[i]);
5223 i++;
5224 }
5225 if (i != *num_pref_freq) {
5226 best_freq = pref_freq_list[i];
5227 wpa_printf(MSG_DEBUG,
5228 "P2P: Using preferred_freq_list[%d]=%d",
5229 i, best_freq);
5230 } else {
5231 wpa_printf(MSG_DEBUG,
5232 "P2P: All driver preferred frequencies are disallowed for P2P use");
5233 *num_pref_freq = 0;
5234 }
5235 } else {
5236 wpa_printf(MSG_DEBUG,
5237 "P2P: No preferred frequency list available");
5238 }
5239 }
5240
5241 /* We have a candidate frequency to use */
5242 if (best_freq > 0) {
5243 if (*pref_freq == 0 && num_unused > 0) {
5244 wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
5245 best_freq);
5246 *pref_freq = best_freq;
5247 } else {
5248 wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
5249 best_freq);
5250 *force_freq = best_freq;
5251 }
5252 } else if (num_unused > 0) {
5253 wpa_printf(MSG_DEBUG,
5254 "P2P: Current operating channels are not available for P2P. Try to use another channel");
5255 *force_freq = 0;
5256 } else {
5257 wpa_printf(MSG_DEBUG,
5258 "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
5259 res = -2;
5260 goto exit_free;
5261 }
5262
5263 exit_ok:
5264 res = 0;
5265 exit_free:
5266 os_free(freqs);
5267 return res;
5268 }
5269
5270
5271 /**
5272 * wpas_p2p_connect - Request P2P Group Formation to be started
5273 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5274 * @peer_addr: Address of the peer P2P Device
5275 * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
5276 * @persistent_group: Whether to create a persistent group
5277 * @auto_join: Whether to select join vs. GO Negotiation automatically
5278 * @join: Whether to join an existing group (as a client) instead of starting
5279 * Group Owner negotiation; @peer_addr is BSSID in that case
5280 * @auth: Whether to only authorize the connection instead of doing that and
5281 * initiating Group Owner negotiation
5282 * @go_intent: GO Intent or -1 to use default
5283 * @freq: Frequency for the group or 0 for auto-selection
5284 * @freq2: Center frequency of segment 1 for the GO operating in VHT 80P80 mode
5285 * @persistent_id: Persistent group credentials to use for forcing GO
5286 * parameters or -1 to generate new values (SSID/passphrase)
5287 * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
5288 * interoperability workaround when initiating group formation
5289 * @ht40: Start GO with 40 MHz channel width
5290 * @vht: Start GO with VHT support
5291 * @vht_chwidth: Channel width supported by GO operating with VHT support
5292 * (VHT_CHANWIDTH_*).
5293 * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
5294 * failure, -2 on failure due to channel not currently available,
5295 * -3 if forced channel is not supported
5296 */
5297 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5298 const char *pin, enum p2p_wps_method wps_method,
5299 int persistent_group, int auto_join, int join, int auth,
5300 int go_intent, int freq, unsigned int vht_center_freq2,
5301 int persistent_id, int pd, int ht40, int vht,
5302 unsigned int vht_chwidth)
5303 {
5304 int force_freq = 0, pref_freq = 0;
5305 int ret = 0, res;
5306 enum wpa_driver_if_type iftype;
5307 const u8 *if_addr;
5308 struct wpa_ssid *ssid = NULL;
5309 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
5310
5311 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5312 return -1;
5313
5314 if (persistent_id >= 0) {
5315 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
5316 if (ssid == NULL || ssid->disabled != 2 ||
5317 ssid->mode != WPAS_MODE_P2P_GO)
5318 return -1;
5319 }
5320
5321 os_free(wpa_s->global->add_psk);
5322 wpa_s->global->add_psk = NULL;
5323
5324 wpa_s->global->p2p_fail_on_wps_complete = 0;
5325 wpa_s->global->pending_p2ps_group = 0;
5326 wpa_s->global->pending_p2ps_group_freq = 0;
5327 wpa_s->p2ps_method_config_any = 0;
5328
5329 if (go_intent < 0)
5330 go_intent = wpa_s->conf->p2p_go_intent;
5331
5332 if (!auth)
5333 wpa_s->p2p_long_listen = 0;
5334
5335 wpa_s->p2p_wps_method = wps_method;
5336 wpa_s->p2p_persistent_group = !!persistent_group;
5337 wpa_s->p2p_persistent_id = persistent_id;
5338 wpa_s->p2p_go_intent = go_intent;
5339 wpa_s->p2p_connect_freq = freq;
5340 wpa_s->p2p_fallback_to_go_neg = 0;
5341 wpa_s->p2p_pd_before_go_neg = !!pd;
5342 wpa_s->p2p_go_ht40 = !!ht40;
5343 wpa_s->p2p_go_vht = !!vht;
5344 wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
5345 wpa_s->p2p_go_max_oper_chwidth = vht_chwidth;
5346
5347 if (pin)
5348 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
5349 else if (wps_method == WPS_PIN_DISPLAY) {
5350 ret = wps_generate_pin();
5351 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin),
5352 "%08d", ret);
5353 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res))
5354 wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0';
5355 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
5356 wpa_s->p2p_pin);
5357 } else
5358 wpa_s->p2p_pin[0] = '\0';
5359
5360 if (join || auto_join) {
5361 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
5362 if (auth) {
5363 wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
5364 "connect a running group from " MACSTR,
5365 MAC2STR(peer_addr));
5366 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5367 return ret;
5368 }
5369 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
5370 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
5371 iface_addr) < 0) {
5372 os_memcpy(iface_addr, peer_addr, ETH_ALEN);
5373 p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
5374 dev_addr);
5375 }
5376 if (auto_join) {
5377 os_get_reltime(&wpa_s->p2p_auto_started);
5378 wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
5379 "%ld.%06ld",
5380 wpa_s->p2p_auto_started.sec,
5381 wpa_s->p2p_auto_started.usec);
5382 }
5383 wpa_s->user_initiated_pd = 1;
5384 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
5385 auto_join, freq, NULL, 0) < 0)
5386 return -1;
5387 return ret;
5388 }
5389
5390 size = P2P_MAX_PREF_CHANNELS;
5391 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5392 go_intent == 15, pref_freq_list, &size);
5393 if (res)
5394 return res;
5395 wpas_p2p_set_own_freq_preference(wpa_s,
5396 force_freq ? force_freq : pref_freq);
5397
5398 p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
5399
5400 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
5401
5402 if (wpa_s->create_p2p_iface) {
5403 /* Prepare to add a new interface for the group */
5404 iftype = WPA_IF_P2P_GROUP;
5405 if (go_intent == 15)
5406 iftype = WPA_IF_P2P_GO;
5407 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
5408 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
5409 "interface for the group");
5410 return -1;
5411 }
5412
5413 if_addr = wpa_s->pending_interface_addr;
5414 } else {
5415 if_addr = wpa_s->own_addr;
5416 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
5417 }
5418
5419 if (auth) {
5420 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
5421 go_intent, if_addr,
5422 force_freq, persistent_group, ssid,
5423 pref_freq) < 0)
5424 return -1;
5425 return ret;
5426 }
5427
5428 if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
5429 go_intent, if_addr, force_freq,
5430 persistent_group, ssid, pref_freq) < 0) {
5431 if (wpa_s->create_p2p_iface)
5432 wpas_p2p_remove_pending_group_interface(wpa_s);
5433 return -1;
5434 }
5435 return ret;
5436 }
5437
5438
5439 /**
5440 * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
5441 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5442 * @freq: Frequency of the channel in MHz
5443 * @duration: Duration of the stay on the channel in milliseconds
5444 *
5445 * This callback is called when the driver indicates that it has started the
5446 * requested remain-on-channel duration.
5447 */
5448 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5449 unsigned int freq, unsigned int duration)
5450 {
5451 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5452 return;
5453 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)",
5454 wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5455 wpa_s->roc_waiting_drv_freq, freq, duration);
5456 if (wpa_s->off_channel_freq &&
5457 wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
5458 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
5459 wpa_s->pending_listen_duration);
5460 wpa_s->pending_listen_freq = 0;
5461 } else {
5462 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
5463 wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5464 freq, duration);
5465 }
5466 }
5467
5468
5469 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout)
5470 {
5471 /* Limit maximum Listen state time based on driver limitation. */
5472 if (timeout > wpa_s->max_remain_on_chan)
5473 timeout = wpa_s->max_remain_on_chan;
5474
5475 return p2p_listen(wpa_s->global->p2p, timeout);
5476 }
5477
5478
5479 /**
5480 * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
5481 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5482 * @freq: Frequency of the channel in MHz
5483 *
5484 * This callback is called when the driver indicates that a remain-on-channel
5485 * operation has been completed, i.e., the duration on the requested channel
5486 * has timed out.
5487 */
5488 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5489 unsigned int freq)
5490 {
5491 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
5492 "(p2p_long_listen=%d ms pending_action_tx=%p)",
5493 wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
5494 wpas_p2p_listen_work_done(wpa_s);
5495 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5496 return;
5497 if (wpa_s->p2p_long_listen > 0)
5498 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
5499 if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
5500 return; /* P2P module started a new operation */
5501 if (offchannel_pending_action_tx(wpa_s))
5502 return;
5503 if (wpa_s->p2p_long_listen > 0) {
5504 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
5505 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
5506 } else {
5507 /*
5508 * When listen duration is over, stop listen & update p2p_state
5509 * to IDLE.
5510 */
5511 p2p_stop_listen(wpa_s->global->p2p);
5512 }
5513 }
5514
5515
5516 /**
5517 * wpas_p2p_group_remove - Remove a P2P group
5518 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5519 * @ifname: Network interface name of the group interface or "*" to remove all
5520 * groups
5521 * Returns: 0 on success, -1 on failure
5522 *
5523 * This function is used to remove a P2P group. This can be used to disconnect
5524 * from a group in which the local end is a P2P Client or to end a P2P Group in
5525 * case the local end is the Group Owner. If a virtual network interface was
5526 * created for this group, that interface will be removed. Otherwise, only the
5527 * configured P2P group network will be removed from the interface.
5528 */
5529 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
5530 {
5531 struct wpa_global *global = wpa_s->global;
5532 struct wpa_supplicant *calling_wpa_s = wpa_s;
5533
5534 if (os_strcmp(ifname, "*") == 0) {
5535 struct wpa_supplicant *prev;
5536 wpa_s = global->ifaces;
5537 while (wpa_s) {
5538 prev = wpa_s;
5539 wpa_s = wpa_s->next;
5540 if (prev->p2p_group_interface !=
5541 NOT_P2P_GROUP_INTERFACE ||
5542 (prev->current_ssid &&
5543 prev->current_ssid->p2p_group))
5544 wpas_p2p_disconnect_safely(prev, calling_wpa_s);
5545 }
5546 return 0;
5547 }
5548
5549 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5550 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5551 break;
5552 }
5553
5554 return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s);
5555 }
5556
5557
5558 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
5559 {
5560 unsigned int r;
5561
5562 if (!wpa_s->conf->num_p2p_pref_chan && !freq) {
5563 unsigned int i, size = P2P_MAX_PREF_CHANNELS;
5564 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS];
5565 int res;
5566
5567 res = wpa_drv_get_pref_freq_list(wpa_s, WPA_IF_P2P_GO,
5568 &size, pref_freq_list);
5569 if (!res && size > 0) {
5570 i = 0;
5571 while (wpas_p2p_disallowed_freq(wpa_s->global,
5572 pref_freq_list[i]) &&
5573 i < size) {
5574 wpa_printf(MSG_DEBUG,
5575 "P2P: preferred_freq_list[%d]=%d is disallowed",
5576 i, pref_freq_list[i]);
5577 i++;
5578 }
5579 if (i != size) {
5580 freq = pref_freq_list[i];
5581 wpa_printf(MSG_DEBUG,
5582 "P2P: Using preferred_freq_list[%d]=%d",
5583 i, freq);
5584 } else {
5585 wpa_printf(MSG_DEBUG,
5586 "P2P: All driver preferred frequencies are disallowed for P2P use");
5587 }
5588 } else {
5589 wpa_printf(MSG_DEBUG,
5590 "P2P: No preferred frequency list available");
5591 }
5592 }
5593
5594 if (freq == 2) {
5595 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
5596 "band");
5597 if (wpa_s->best_24_freq > 0 &&
5598 p2p_supported_freq_go(wpa_s->global->p2p,
5599 wpa_s->best_24_freq)) {
5600 freq = wpa_s->best_24_freq;
5601 wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
5602 "channel: %d MHz", freq);
5603 } else {
5604 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5605 return -1;
5606 freq = 2412 + (r % 3) * 25;
5607 wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
5608 "channel: %d MHz", freq);
5609 }
5610 }
5611
5612 if (freq == 5) {
5613 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
5614 "band");
5615 if (wpa_s->best_5_freq > 0 &&
5616 p2p_supported_freq_go(wpa_s->global->p2p,
5617 wpa_s->best_5_freq)) {
5618 freq = wpa_s->best_5_freq;
5619 wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
5620 "channel: %d MHz", freq);
5621 } else {
5622 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5623 return -1;
5624 freq = 5180 + (r % 4) * 20;
5625 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5626 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5627 "5 GHz channel for P2P group");
5628 return -1;
5629 }
5630 wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5631 "channel: %d MHz", freq);
5632 }
5633 }
5634
5635 if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5636 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5637 ieee80211_is_dfs(freq)) {
5638 /*
5639 * If freq is a DFS channel and DFS is offloaded to the
5640 * driver, allow P2P GO to use it.
5641 */
5642 wpa_printf(MSG_DEBUG, "P2P: "
5643 "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded",
5644 __func__, freq);
5645 return freq;
5646 }
5647 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5648 "(%u MHz) is not supported for P2P uses",
5649 freq);
5650 return -1;
5651 }
5652
5653 return freq;
5654 }
5655
5656
5657 static int wpas_p2p_supported_freq_go(struct wpa_supplicant *wpa_s,
5658 const struct p2p_channels *channels,
5659 int freq)
5660 {
5661 if (!wpas_p2p_disallowed_freq(wpa_s->global, freq) &&
5662 p2p_supported_freq_go(wpa_s->global->p2p, freq) &&
5663 freq_included(wpa_s, channels, freq))
5664 return 1;
5665 return 0;
5666 }
5667
5668
5669 static void wpas_p2p_select_go_freq_no_pref(struct wpa_supplicant *wpa_s,
5670 struct p2p_go_neg_results *params,
5671 const struct p2p_channels *channels)
5672 {
5673 unsigned int i, r;
5674
5675 /* first try some random selection of the social channels */
5676 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5677 return;
5678
5679 for (i = 0; i < 3; i++) {
5680 params->freq = 2412 + ((r + i) % 3) * 25;
5681 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5682 goto out;
5683 }
5684
5685 /* try all other channels in operating class 81 */
5686 for (i = 0; i < 11; i++) {
5687 params->freq = 2412 + i * 5;
5688
5689 /* skip social channels; covered in the previous loop */
5690 if (params->freq == 2412 ||
5691 params->freq == 2437 ||
5692 params->freq == 2462)
5693 continue;
5694
5695 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5696 goto out;
5697 }
5698
5699 /* try all channels in operating class 115 */
5700 for (i = 0; i < 4; i++) {
5701 params->freq = 5180 + i * 20;
5702 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5703 freq_included(wpa_s, channels, params->freq) &&
5704 p2p_supported_freq(wpa_s->global->p2p, params->freq))
5705 goto out;
5706 }
5707
5708 /* try all channels in operating class 124 */
5709 for (i = 0; i < 4; i++) {
5710 params->freq = 5745 + i * 20;
5711 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5712 freq_included(wpa_s, channels, params->freq) &&
5713 p2p_supported_freq(wpa_s->global->p2p, params->freq))
5714 goto out;
5715 }
5716
5717 /* try social channel class 180 channel 2 */
5718 params->freq = 58320 + 1 * 2160;
5719 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5720 freq_included(wpa_s, channels, params->freq) &&
5721 p2p_supported_freq(wpa_s->global->p2p, params->freq))
5722 goto out;
5723
5724 /* try all channels in reg. class 180 */
5725 for (i = 0; i < 4; i++) {
5726 params->freq = 58320 + i * 2160;
5727 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5728 freq_included(wpa_s, channels, params->freq) &&
5729 p2p_supported_freq(wpa_s->global->p2p, params->freq))
5730 goto out;
5731 }
5732
5733 params->freq = 0;
5734 wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed");
5735 return;
5736 out:
5737 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5738 params->freq);
5739 }
5740
5741
5742 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5743 struct p2p_go_neg_results *params,
5744 int freq, int vht_center_freq2, int ht40,
5745 int vht, int max_oper_chwidth,
5746 const struct p2p_channels *channels)
5747 {
5748 struct wpa_used_freq_data *freqs;
5749 unsigned int cand;
5750 unsigned int num, i;
5751 int ignore_no_freqs = 0;
5752
5753 os_memset(params, 0, sizeof(*params));
5754 params->role_go = 1;
5755 params->ht40 = ht40;
5756 params->vht = vht;
5757 params->max_oper_chwidth = max_oper_chwidth;
5758 params->vht_center_freq2 = vht_center_freq2;
5759
5760 freqs = os_calloc(wpa_s->num_multichan_concurrent,
5761 sizeof(struct wpa_used_freq_data));
5762 if (!freqs)
5763 return -1;
5764
5765 num = get_shared_radio_freqs_data(wpa_s, freqs,
5766 wpa_s->num_multichan_concurrent);
5767
5768 if (wpa_s->current_ssid &&
5769 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO &&
5770 wpa_s->wpa_state == WPA_COMPLETED) {
5771 wpa_printf(MSG_DEBUG, "P2P: %s called for an active GO",
5772 __func__);
5773
5774 /*
5775 * If the frequency selection is done for an active P2P GO that
5776 * is not sharing a frequency, allow to select a new frequency
5777 * even if there are no unused frequencies as we are about to
5778 * move the P2P GO so its frequency can be re-used.
5779 */
5780 for (i = 0; i < num; i++) {
5781 if (freqs[i].freq == wpa_s->current_ssid->frequency &&
5782 freqs[i].flags == 0) {
5783 ignore_no_freqs = 1;
5784 break;
5785 }
5786 }
5787 }
5788
5789 /* try using the forced freq */
5790 if (freq) {
5791 if (!wpas_p2p_supported_freq_go(wpa_s, channels, freq)) {
5792 wpa_printf(MSG_DEBUG,
5793 "P2P: Forced GO freq %d MHz not accepted",
5794 freq);
5795 goto fail;
5796 }
5797
5798 for (i = 0; i < num; i++) {
5799 if (freqs[i].freq == freq) {
5800 wpa_printf(MSG_DEBUG,
5801 "P2P: forced freq (%d MHz) is also shared",
5802 freq);
5803 params->freq = freq;
5804 goto success;
5805 }
5806 }
5807
5808 if (!ignore_no_freqs &&
5809 wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5810 wpa_printf(MSG_DEBUG,
5811 "P2P: Cannot force GO on freq (%d MHz) as all the channels are in use",
5812 freq);
5813 goto fail;
5814 }
5815
5816 wpa_printf(MSG_DEBUG,
5817 "P2P: force GO freq (%d MHz) on a free channel",
5818 freq);
5819 params->freq = freq;
5820 goto success;
5821 }
5822
5823 /* consider using one of the shared frequencies */
5824 if (num) {
5825 cand = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5826 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5827 wpa_printf(MSG_DEBUG,
5828 "P2P: Use shared freq (%d MHz) for GO",
5829 freq);
5830 params->freq = cand;
5831 goto success;
5832 }
5833
5834 /* try using one of the shared freqs */
5835 for (i = 0; i < num; i++) {
5836 if (wpas_p2p_supported_freq_go(wpa_s, channels,
5837 freqs[i].freq)) {
5838 wpa_printf(MSG_DEBUG,
5839 "P2P: Use shared freq (%d MHz) for GO",
5840 freq);
5841 params->freq = freqs[i].freq;
5842 goto success;
5843 }
5844 }
5845 }
5846
5847 if (!ignore_no_freqs &&
5848 wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5849 wpa_printf(MSG_DEBUG,
5850 "P2P: Cannot force GO on any of the channels we are already using");
5851 goto fail;
5852 }
5853
5854 /* try using the setting from the configuration file */
5855 if (wpa_s->conf->p2p_oper_reg_class == 81 &&
5856 wpa_s->conf->p2p_oper_channel >= 1 &&
5857 wpa_s->conf->p2p_oper_channel <= 11 &&
5858 wpas_p2p_supported_freq_go(
5859 wpa_s, channels,
5860 2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
5861 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
5862 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5863 "frequency %d MHz", params->freq);
5864 goto success;
5865 }
5866
5867 if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
5868 wpa_s->conf->p2p_oper_reg_class == 116 ||
5869 wpa_s->conf->p2p_oper_reg_class == 117 ||
5870 wpa_s->conf->p2p_oper_reg_class == 124 ||
5871 wpa_s->conf->p2p_oper_reg_class == 125 ||
5872 wpa_s->conf->p2p_oper_reg_class == 126 ||
5873 wpa_s->conf->p2p_oper_reg_class == 127) &&
5874 wpas_p2p_supported_freq_go(wpa_s, channels,
5875 5000 +
5876 5 * wpa_s->conf->p2p_oper_channel)) {
5877 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
5878 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5879 "frequency %d MHz", params->freq);
5880 goto success;
5881 }
5882
5883 /* Try using best channels */
5884 if (wpa_s->conf->p2p_oper_channel == 0 &&
5885 wpa_s->best_overall_freq > 0 &&
5886 wpas_p2p_supported_freq_go(wpa_s, channels,
5887 wpa_s->best_overall_freq)) {
5888 params->freq = wpa_s->best_overall_freq;
5889 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5890 "channel %d MHz", params->freq);
5891 goto success;
5892 }
5893
5894 if (wpa_s->conf->p2p_oper_channel == 0 &&
5895 wpa_s->best_24_freq > 0 &&
5896 wpas_p2p_supported_freq_go(wpa_s, channels,
5897 wpa_s->best_24_freq)) {
5898 params->freq = wpa_s->best_24_freq;
5899 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
5900 "channel %d MHz", params->freq);
5901 goto success;
5902 }
5903
5904 if (wpa_s->conf->p2p_oper_channel == 0 &&
5905 wpa_s->best_5_freq > 0 &&
5906 wpas_p2p_supported_freq_go(wpa_s, channels,
5907 wpa_s->best_5_freq)) {
5908 params->freq = wpa_s->best_5_freq;
5909 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
5910 "channel %d MHz", params->freq);
5911 goto success;
5912 }
5913
5914 /* try using preferred channels */
5915 cand = p2p_get_pref_freq(wpa_s->global->p2p, channels);
5916 if (cand && wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5917 params->freq = cand;
5918 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
5919 "channels", params->freq);
5920 goto success;
5921 }
5922
5923 /* Try using one of the group common freqs */
5924 if (wpa_s->p2p_group_common_freqs) {
5925 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
5926 cand = wpa_s->p2p_group_common_freqs[i];
5927 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5928 params->freq = cand;
5929 wpa_printf(MSG_DEBUG,
5930 "P2P: Use freq %d MHz common with the peer",
5931 params->freq);
5932 goto success;
5933 }
5934 }
5935 }
5936
5937 /* no preference, select some channel */
5938 wpas_p2p_select_go_freq_no_pref(wpa_s, params, channels);
5939
5940 if (params->freq == 0) {
5941 wpa_printf(MSG_DEBUG, "P2P: did not find a freq for GO use");
5942 goto fail;
5943 }
5944
5945 success:
5946 os_free(freqs);
5947 return 0;
5948 fail:
5949 os_free(freqs);
5950 return -1;
5951 }
5952
5953
5954 static struct wpa_supplicant *
5955 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5956 int go)
5957 {
5958 struct wpa_supplicant *group_wpa_s;
5959
5960 if (!wpas_p2p_create_iface(wpa_s)) {
5961 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
5962 "operations");
5963 wpa_s->p2p_first_connection_timeout = 0;
5964 return wpa_s;
5965 }
5966
5967 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
5968 WPA_IF_P2P_CLIENT) < 0) {
5969 wpa_msg_global(wpa_s, MSG_ERROR,
5970 "P2P: Failed to add group interface");
5971 return NULL;
5972 }
5973 group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
5974 if (group_wpa_s == NULL) {
5975 wpa_msg_global(wpa_s, MSG_ERROR,
5976 "P2P: Failed to initialize group interface");
5977 wpas_p2p_remove_pending_group_interface(wpa_s);
5978 return NULL;
5979 }
5980
5981 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
5982 group_wpa_s->ifname);
5983 group_wpa_s->p2p_first_connection_timeout = 0;
5984 return group_wpa_s;
5985 }
5986
5987
5988 /**
5989 * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
5990 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5991 * @persistent_group: Whether to create a persistent group
5992 * @freq: Frequency for the group or 0 to indicate no hardcoding
5993 * @vht_center_freq2: segment_1 center frequency for GO operating in VHT 80P80
5994 * @ht40: Start GO with 40 MHz channel width
5995 * @vht: Start GO with VHT support
5996 * @vht_chwidth: channel bandwidth for GO operating with VHT support
5997 * Returns: 0 on success, -1 on failure
5998 *
5999 * This function creates a new P2P group with the local end as the Group Owner,
6000 * i.e., without using Group Owner Negotiation.
6001 */
6002 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
6003 int freq, int vht_center_freq2, int ht40, int vht,
6004 int max_oper_chwidth)
6005 {
6006 struct p2p_go_neg_results params;
6007
6008 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6009 return -1;
6010
6011 os_free(wpa_s->global->add_psk);
6012 wpa_s->global->add_psk = NULL;
6013
6014 /* Make sure we are not running find during connection establishment */
6015 wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
6016 wpas_p2p_stop_find_oper(wpa_s);
6017
6018 freq = wpas_p2p_select_go_freq(wpa_s, freq);
6019 if (freq < 0)
6020 return -1;
6021
6022 if (wpas_p2p_init_go_params(wpa_s, &params, freq, vht_center_freq2,
6023 ht40, vht, max_oper_chwidth, NULL))
6024 return -1;
6025 if (params.freq &&
6026 !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
6027 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
6028 ieee80211_is_dfs(params.freq)) {
6029 /*
6030 * If freq is a DFS channel and DFS is offloaded to the
6031 * driver, allow P2P GO to use it.
6032 */
6033 wpa_printf(MSG_DEBUG,
6034 "P2P: %s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to driver",
6035 __func__, params.freq);
6036 } else {
6037 wpa_printf(MSG_DEBUG,
6038 "P2P: The selected channel for GO (%u MHz) is not supported for P2P uses",
6039 params.freq);
6040 return -1;
6041 }
6042 }
6043 p2p_go_params(wpa_s->global->p2p, &params);
6044 params.persistent_group = persistent_group;
6045
6046 wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
6047 if (wpa_s == NULL)
6048 return -1;
6049 wpas_start_wps_go(wpa_s, &params, 0);
6050
6051 return 0;
6052 }
6053
6054
6055 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
6056 struct wpa_ssid *params, int addr_allocated,
6057 int freq, int force_scan)
6058 {
6059 struct wpa_ssid *ssid;
6060
6061 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
6062 if (wpa_s == NULL)
6063 return -1;
6064 if (force_scan)
6065 os_get_reltime(&wpa_s->scan_min_time);
6066 wpa_s->p2p_last_4way_hs_fail = NULL;
6067
6068 wpa_supplicant_ap_deinit(wpa_s);
6069
6070 ssid = wpa_config_add_network(wpa_s->conf);
6071 if (ssid == NULL)
6072 return -1;
6073 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
6074 wpa_config_set_network_defaults(ssid);
6075 ssid->temporary = 1;
6076 ssid->proto = WPA_PROTO_RSN;
6077 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
6078 ssid->group_cipher = WPA_CIPHER_CCMP;
6079 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
6080 ssid->ssid = os_malloc(params->ssid_len);
6081 if (ssid->ssid == NULL) {
6082 wpa_config_remove_network(wpa_s->conf, ssid->id);
6083 return -1;
6084 }
6085 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
6086 ssid->ssid_len = params->ssid_len;
6087 ssid->p2p_group = 1;
6088 ssid->export_keys = 1;
6089 if (params->psk_set) {
6090 os_memcpy(ssid->psk, params->psk, 32);
6091 ssid->psk_set = 1;
6092 }
6093 if (params->passphrase)
6094 ssid->passphrase = os_strdup(params->passphrase);
6095
6096 wpa_s->show_group_started = 1;
6097 wpa_s->p2p_in_invitation = 1;
6098 wpa_s->p2p_invite_go_freq = freq;
6099
6100 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
6101 NULL);
6102 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6103 wpas_p2p_group_formation_timeout,
6104 wpa_s->parent, NULL);
6105 wpa_supplicant_select_network(wpa_s, ssid);
6106
6107 return 0;
6108 }
6109
6110
6111 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
6112 struct wpa_ssid *ssid, int addr_allocated,
6113 int force_freq, int neg_freq,
6114 int vht_center_freq2, int ht40,
6115 int vht, int max_oper_chwidth,
6116 const struct p2p_channels *channels,
6117 int connection_timeout, int force_scan)
6118 {
6119 struct p2p_go_neg_results params;
6120 int go = 0, freq;
6121
6122 if (ssid->disabled != 2 || ssid->ssid == NULL)
6123 return -1;
6124
6125 if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
6126 go == (ssid->mode == WPAS_MODE_P2P_GO)) {
6127 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
6128 "already running");
6129 if (go == 0 &&
6130 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6131 wpa_s->parent, NULL)) {
6132 /*
6133 * This can happen if Invitation Response frame was lost
6134 * and the peer (GO of a persistent group) tries to
6135 * invite us again. Reschedule the timeout to avoid
6136 * terminating the wait for the connection too early
6137 * since we now know that the peer is still trying to
6138 * invite us instead of having already started the GO.
6139 */
6140 wpa_printf(MSG_DEBUG,
6141 "P2P: Reschedule group formation timeout since peer is still trying to invite us");
6142 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6143 wpas_p2p_group_formation_timeout,
6144 wpa_s->parent, NULL);
6145 }
6146 return 0;
6147 }
6148
6149 os_free(wpa_s->global->add_psk);
6150 wpa_s->global->add_psk = NULL;
6151
6152 /* Make sure we are not running find during connection establishment */
6153 wpas_p2p_stop_find_oper(wpa_s);
6154
6155 wpa_s->p2p_fallback_to_go_neg = 0;
6156
6157 if (ssid->mode == WPAS_MODE_P2P_GO) {
6158 if (force_freq > 0) {
6159 freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
6160 if (freq < 0)
6161 return -1;
6162 } else {
6163 freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
6164 if (freq < 0 ||
6165 (freq > 0 && !freq_included(wpa_s, channels, freq)))
6166 freq = 0;
6167 }
6168 } else if (ssid->mode == WPAS_MODE_INFRA) {
6169 freq = neg_freq;
6170 if (freq <= 0 || !freq_included(wpa_s, channels, freq)) {
6171 struct os_reltime now;
6172 struct wpa_bss *bss =
6173 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid);
6174
6175 os_get_reltime(&now);
6176 if (bss &&
6177 !os_reltime_expired(&now, &bss->last_update, 5) &&
6178 freq_included(wpa_s, channels, bss->freq))
6179 freq = bss->freq;
6180 else
6181 freq = 0;
6182 }
6183
6184 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq,
6185 force_scan);
6186 } else {
6187 return -1;
6188 }
6189
6190 if (wpas_p2p_init_go_params(wpa_s, &params, freq, vht_center_freq2,
6191 ht40, vht, max_oper_chwidth, channels))
6192 return -1;
6193
6194 params.role_go = 1;
6195 params.psk_set = ssid->psk_set;
6196 if (params.psk_set)
6197 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
6198 if (ssid->passphrase) {
6199 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
6200 wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
6201 "persistent group");
6202 return -1;
6203 }
6204 os_strlcpy(params.passphrase, ssid->passphrase,
6205 sizeof(params.passphrase));
6206 }
6207 os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
6208 params.ssid_len = ssid->ssid_len;
6209 params.persistent_group = 1;
6210
6211 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
6212 if (wpa_s == NULL)
6213 return -1;
6214
6215 p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS);
6216
6217 wpa_s->p2p_first_connection_timeout = connection_timeout;
6218 wpas_start_wps_go(wpa_s, &params, 0);
6219
6220 return 0;
6221 }
6222
6223
6224 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
6225 struct wpabuf *proberesp_ies)
6226 {
6227 struct wpa_supplicant *wpa_s = ctx;
6228 if (wpa_s->ap_iface) {
6229 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
6230 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
6231 wpabuf_free(beacon_ies);
6232 wpabuf_free(proberesp_ies);
6233 return;
6234 }
6235 if (beacon_ies) {
6236 wpabuf_free(hapd->p2p_beacon_ie);
6237 hapd->p2p_beacon_ie = beacon_ies;
6238 }
6239 wpabuf_free(hapd->p2p_probe_resp_ie);
6240 hapd->p2p_probe_resp_ie = proberesp_ies;
6241 } else {
6242 wpabuf_free(beacon_ies);
6243 wpabuf_free(proberesp_ies);
6244 }
6245 wpa_supplicant_ap_update_beacon(wpa_s);
6246 }
6247
6248
6249 static void wpas_p2p_idle_update(void *ctx, int idle)
6250 {
6251 struct wpa_supplicant *wpa_s = ctx;
6252 if (!wpa_s->ap_iface)
6253 return;
6254 wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
6255 if (idle) {
6256 if (wpa_s->global->p2p_fail_on_wps_complete &&
6257 wpa_s->p2p_in_provisioning) {
6258 wpas_p2p_grpform_fail_after_wps(wpa_s);
6259 return;
6260 }
6261 wpas_p2p_set_group_idle_timeout(wpa_s);
6262 } else
6263 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
6264 }
6265
6266
6267 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
6268 struct wpa_ssid *ssid)
6269 {
6270 struct p2p_group *group;
6271 struct p2p_group_config *cfg;
6272
6273 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6274 return NULL;
6275
6276 cfg = os_zalloc(sizeof(*cfg));
6277 if (cfg == NULL)
6278 return NULL;
6279
6280 if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
6281 cfg->persistent_group = 2;
6282 else if (ssid->p2p_persistent_group)
6283 cfg->persistent_group = 1;
6284 os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
6285 if (wpa_s->max_stations &&
6286 wpa_s->max_stations < wpa_s->conf->max_num_sta)
6287 cfg->max_clients = wpa_s->max_stations;
6288 else
6289 cfg->max_clients = wpa_s->conf->max_num_sta;
6290 os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
6291 cfg->ssid_len = ssid->ssid_len;
6292 cfg->freq = ssid->frequency;
6293 cfg->cb_ctx = wpa_s;
6294 cfg->ie_update = wpas_p2p_ie_update;
6295 cfg->idle_update = wpas_p2p_idle_update;
6296
6297 group = p2p_group_init(wpa_s->global->p2p, cfg);
6298 if (group == NULL)
6299 os_free(cfg);
6300 if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
6301 p2p_group_notif_formation_done(group);
6302 wpa_s->p2p_group = group;
6303 return group;
6304 }
6305
6306
6307 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6308 int registrar)
6309 {
6310 struct wpa_ssid *ssid = wpa_s->current_ssid;
6311
6312 if (!wpa_s->p2p_in_provisioning) {
6313 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
6314 "provisioning not in progress");
6315 return;
6316 }
6317
6318 if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6319 u8 go_dev_addr[ETH_ALEN];
6320 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
6321 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6322 ssid->ssid_len);
6323 /* Clear any stored provisioning info */
6324 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
6325 }
6326
6327 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
6328 NULL);
6329 wpa_s->p2p_go_group_formation_completed = 1;
6330 if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6331 /*
6332 * Use a separate timeout for initial data connection to
6333 * complete to allow the group to be removed automatically if
6334 * something goes wrong in this step before the P2P group idle
6335 * timeout mechanism is taken into use.
6336 */
6337 wpa_dbg(wpa_s, MSG_DEBUG,
6338 "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
6339 P2P_MAX_INITIAL_CONN_WAIT);
6340 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6341 wpas_p2p_group_formation_timeout,
6342 wpa_s->parent, NULL);
6343 /* Complete group formation on successful data connection. */
6344 wpa_s->p2p_go_group_formation_completed = 0;
6345 } else if (ssid) {
6346 /*
6347 * Use a separate timeout for initial data connection to
6348 * complete to allow the group to be removed automatically if
6349 * the client does not complete data connection successfully.
6350 */
6351 wpa_dbg(wpa_s, MSG_DEBUG,
6352 "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
6353 P2P_MAX_INITIAL_CONN_WAIT_GO);
6354 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
6355 wpas_p2p_group_formation_timeout,
6356 wpa_s->parent, NULL);
6357 /*
6358 * Complete group formation on first successful data connection
6359 */
6360 wpa_s->p2p_go_group_formation_completed = 0;
6361 }
6362 if (wpa_s->global->p2p)
6363 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
6364 wpas_group_formation_completed(wpa_s, 1, 0);
6365 }
6366
6367
6368 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
6369 struct wps_event_fail *fail)
6370 {
6371 if (!wpa_s->p2p_in_provisioning) {
6372 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
6373 "provisioning not in progress");
6374 return;
6375 }
6376
6377 if (wpa_s->go_params) {
6378 p2p_clear_provisioning_info(
6379 wpa_s->global->p2p,
6380 wpa_s->go_params->peer_device_addr);
6381 }
6382
6383 wpas_notify_p2p_wps_failed(wpa_s, fail);
6384
6385 if (wpa_s == wpa_s->global->p2p_group_formation) {
6386 /*
6387 * Allow some time for the failed WPS negotiation exchange to
6388 * complete, but remove the group since group formation cannot
6389 * succeed after provisioning failure.
6390 */
6391 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
6392 wpa_s->global->p2p_fail_on_wps_complete = 1;
6393 eloop_deplete_timeout(0, 50000,
6394 wpas_p2p_group_formation_timeout,
6395 wpa_s->parent, NULL);
6396 }
6397 }
6398
6399
6400 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
6401 {
6402 if (!wpa_s->global->p2p_fail_on_wps_complete ||
6403 !wpa_s->p2p_in_provisioning)
6404 return 0;
6405
6406 wpas_p2p_grpform_fail_after_wps(wpa_s);
6407
6408 return 1;
6409 }
6410
6411
6412 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6413 const char *config_method,
6414 enum wpas_p2p_prov_disc_use use,
6415 struct p2ps_provision *p2ps_prov)
6416 {
6417 u16 config_methods;
6418
6419 wpa_s->global->pending_p2ps_group = 0;
6420 wpa_s->global->pending_p2ps_group_freq = 0;
6421 wpa_s->p2p_fallback_to_go_neg = 0;
6422 wpa_s->pending_pd_use = NORMAL_PD;
6423 if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) {
6424 p2ps_prov->conncap = p2ps_group_capability(
6425 wpa_s, P2PS_SETUP_NONE, p2ps_prov->role,
6426 &p2ps_prov->force_freq, &p2ps_prov->pref_freq);
6427
6428 wpa_printf(MSG_DEBUG,
6429 "P2P: %s conncap: %d - ASP parsed: %x %x %d %s",
6430 __func__, p2ps_prov->conncap,
6431 p2ps_prov->adv_id, p2ps_prov->conncap,
6432 p2ps_prov->status, p2ps_prov->info);
6433
6434 config_methods = 0;
6435 } else if (os_strncmp(config_method, "display", 7) == 0)
6436 config_methods = WPS_CONFIG_DISPLAY;
6437 else if (os_strncmp(config_method, "keypad", 6) == 0)
6438 config_methods = WPS_CONFIG_KEYPAD;
6439 else if (os_strncmp(config_method, "pbc", 3) == 0 ||
6440 os_strncmp(config_method, "pushbutton", 10) == 0)
6441 config_methods = WPS_CONFIG_PUSHBUTTON;
6442 else {
6443 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
6444 os_free(p2ps_prov);
6445 return -1;
6446 }
6447
6448 if (use == WPAS_P2P_PD_AUTO) {
6449 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
6450 wpa_s->pending_pd_config_methods = config_methods;
6451 wpa_s->p2p_auto_pd = 1;
6452 wpa_s->p2p_auto_join = 0;
6453 wpa_s->pending_pd_before_join = 0;
6454 wpa_s->auto_pd_scan_retry = 0;
6455 wpas_p2p_stop_find(wpa_s);
6456 wpa_s->p2p_join_scan_count = 0;
6457 os_get_reltime(&wpa_s->p2p_auto_started);
6458 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
6459 wpa_s->p2p_auto_started.sec,
6460 wpa_s->p2p_auto_started.usec);
6461 wpas_p2p_join_scan(wpa_s, NULL);
6462 return 0;
6463 }
6464
6465 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) {
6466 os_free(p2ps_prov);
6467 return -1;
6468 }
6469
6470 return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov,
6471 config_methods, use == WPAS_P2P_PD_FOR_JOIN,
6472 0, 1);
6473 }
6474
6475
6476 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
6477 char *end)
6478 {
6479 return p2p_scan_result_text(ies, ies_len, buf, end);
6480 }
6481
6482
6483 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
6484 {
6485 if (!offchannel_pending_action_tx(wpa_s))
6486 return;
6487
6488 if (wpa_s->p2p_send_action_work)
6489 wpas_p2p_free_send_action_work(wpa_s);
6490
6491 wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
6492 "operation request");
6493 offchannel_clear_pending_action_tx(wpa_s);
6494 }
6495
6496
6497 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
6498 enum p2p_discovery_type type,
6499 unsigned int num_req_dev_types, const u8 *req_dev_types,
6500 const u8 *dev_id, unsigned int search_delay,
6501 u8 seek_cnt, const char **seek_string, int freq)
6502 {
6503 wpas_p2p_clear_pending_action_tx(wpa_s);
6504 wpa_s->p2p_long_listen = 0;
6505
6506 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
6507 wpa_s->p2p_in_provisioning)
6508 return -1;
6509
6510 wpa_supplicant_cancel_sched_scan(wpa_s);
6511
6512 return p2p_find(wpa_s->global->p2p, timeout, type,
6513 num_req_dev_types, req_dev_types, dev_id,
6514 search_delay, seek_cnt, seek_string, freq);
6515 }
6516
6517
6518 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
6519 struct wpa_scan_results *scan_res)
6520 {
6521 wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6522
6523 if (wpa_s->p2p_scan_work) {
6524 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
6525 wpa_s->p2p_scan_work = NULL;
6526 radio_work_done(work);
6527 }
6528
6529 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6530 return;
6531
6532 /*
6533 * Indicate that results have been processed so that the P2P module can
6534 * continue pending tasks.
6535 */
6536 p2p_scan_res_handled(wpa_s->global->p2p);
6537 }
6538
6539
6540 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
6541 {
6542 wpas_p2p_clear_pending_action_tx(wpa_s);
6543 wpa_s->p2p_long_listen = 0;
6544 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6545 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
6546
6547 if (wpa_s->global->p2p)
6548 p2p_stop_find(wpa_s->global->p2p);
6549
6550 if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
6551 wpa_printf(MSG_DEBUG,
6552 "P2P: Do not consider the scan results after stop_find");
6553 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
6554 }
6555 }
6556
6557
6558 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
6559 {
6560 wpas_p2p_stop_find_oper(wpa_s);
6561 if (!wpa_s->global->pending_group_iface_for_p2ps)
6562 wpas_p2p_remove_pending_group_interface(wpa_s);
6563 }
6564
6565
6566 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
6567 {
6568 struct wpa_supplicant *wpa_s = eloop_ctx;
6569 wpa_s->p2p_long_listen = 0;
6570 }
6571
6572
6573 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
6574 {
6575 int res;
6576
6577 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6578 return -1;
6579
6580 wpa_supplicant_cancel_sched_scan(wpa_s);
6581 wpas_p2p_clear_pending_action_tx(wpa_s);
6582
6583 if (timeout == 0) {
6584 /*
6585 * This is a request for unlimited Listen state. However, at
6586 * least for now, this is mapped to a Listen state for one
6587 * hour.
6588 */
6589 timeout = 3600;
6590 }
6591 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6592 wpa_s->p2p_long_listen = 0;
6593
6594 /*
6595 * Stop previous find/listen operation to avoid trying to request a new
6596 * remain-on-channel operation while the driver is still running the
6597 * previous one.
6598 */
6599 if (wpa_s->global->p2p)
6600 p2p_stop_find(wpa_s->global->p2p);
6601
6602 res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
6603 if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
6604 wpa_s->p2p_long_listen = timeout * 1000;
6605 eloop_register_timeout(timeout, 0,
6606 wpas_p2p_long_listen_timeout,
6607 wpa_s, NULL);
6608 }
6609
6610 return res;
6611 }
6612
6613
6614 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
6615 u8 *buf, size_t len, int p2p_group)
6616 {
6617 struct wpabuf *p2p_ie;
6618 int ret;
6619
6620 if (wpa_s->global->p2p_disabled)
6621 return -1;
6622 /*
6623 * Advertize mandatory cross connection capability even on
6624 * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP.
6625 */
6626 if (wpa_s->conf->p2p_disabled && p2p_group)
6627 return -1;
6628 if (wpa_s->global->p2p == NULL)
6629 return -1;
6630 if (bss == NULL)
6631 return -1;
6632
6633 p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
6634 ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
6635 p2p_group, p2p_ie);
6636 wpabuf_free(p2p_ie);
6637
6638 return ret;
6639 }
6640
6641
6642 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
6643 const u8 *dst, const u8 *bssid,
6644 const u8 *ie, size_t ie_len,
6645 unsigned int rx_freq, int ssi_signal)
6646 {
6647 if (wpa_s->global->p2p_disabled)
6648 return 0;
6649 if (wpa_s->global->p2p == NULL)
6650 return 0;
6651
6652 switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
6653 ie, ie_len, rx_freq)) {
6654 case P2P_PREQ_NOT_P2P:
6655 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
6656 ssi_signal);
6657 /* fall through */
6658 case P2P_PREQ_MALFORMED:
6659 case P2P_PREQ_NOT_LISTEN:
6660 case P2P_PREQ_NOT_PROCESSED:
6661 default: /* make gcc happy */
6662 return 0;
6663 case P2P_PREQ_PROCESSED:
6664 return 1;
6665 }
6666 }
6667
6668
6669 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
6670 const u8 *sa, const u8 *bssid,
6671 u8 category, const u8 *data, size_t len, int freq)
6672 {
6673 if (wpa_s->global->p2p_disabled)
6674 return;
6675 if (wpa_s->global->p2p == NULL)
6676 return;
6677
6678 p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
6679 freq);
6680 }
6681
6682
6683 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
6684 {
6685 if (wpa_s->global->p2p_disabled)
6686 return;
6687 if (wpa_s->global->p2p == NULL)
6688 return;
6689
6690 p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
6691 }
6692
6693
6694 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
6695 {
6696 p2p_group_deinit(wpa_s->p2p_group);
6697 wpa_s->p2p_group = NULL;
6698
6699 wpa_s->ap_configured_cb = NULL;
6700 wpa_s->ap_configured_cb_ctx = NULL;
6701 wpa_s->ap_configured_cb_data = NULL;
6702 wpa_s->connect_without_scan = NULL;
6703 }
6704
6705
6706 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
6707 {
6708 wpa_s->p2p_long_listen = 0;
6709
6710 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6711 return -1;
6712
6713 return p2p_reject(wpa_s->global->p2p, addr);
6714 }
6715
6716
6717 /* Invite to reinvoke a persistent group */
6718 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6719 struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
6720 int vht_center_freq2, int ht40, int vht, int max_chwidth,
6721 int pref_freq)
6722 {
6723 enum p2p_invite_role role;
6724 u8 *bssid = NULL;
6725 int force_freq = 0;
6726 int res;
6727 int no_pref_freq_given = pref_freq == 0;
6728 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6729
6730 wpa_s->global->p2p_invite_group = NULL;
6731 if (peer_addr)
6732 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
6733 else
6734 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
6735
6736 wpa_s->p2p_persistent_go_freq = freq;
6737 wpa_s->p2p_go_ht40 = !!ht40;
6738 wpa_s->p2p_go_vht = !!vht;
6739 wpa_s->p2p_go_max_oper_chwidth = max_chwidth;
6740 wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
6741 if (ssid->mode == WPAS_MODE_P2P_GO) {
6742 role = P2P_INVITE_ROLE_GO;
6743 if (peer_addr == NULL) {
6744 wpa_printf(MSG_DEBUG, "P2P: Missing peer "
6745 "address in invitation command");
6746 return -1;
6747 }
6748 if (wpas_p2p_create_iface(wpa_s)) {
6749 if (wpas_p2p_add_group_interface(wpa_s,
6750 WPA_IF_P2P_GO) < 0) {
6751 wpa_printf(MSG_ERROR, "P2P: Failed to "
6752 "allocate a new interface for the "
6753 "group");
6754 return -1;
6755 }
6756 bssid = wpa_s->pending_interface_addr;
6757 } else
6758 bssid = wpa_s->own_addr;
6759 } else {
6760 role = P2P_INVITE_ROLE_CLIENT;
6761 peer_addr = ssid->bssid;
6762 }
6763 wpa_s->pending_invite_ssid_id = ssid->id;
6764
6765 size = P2P_MAX_PREF_CHANNELS;
6766 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6767 role == P2P_INVITE_ROLE_GO,
6768 pref_freq_list, &size);
6769 if (res)
6770 return res;
6771 p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
6772
6773 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6774 return -1;
6775
6776 if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
6777 no_pref_freq_given && pref_freq > 0 &&
6778 wpa_s->num_multichan_concurrent > 1 &&
6779 wpas_p2p_num_unused_channels(wpa_s) > 0) {
6780 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
6781 pref_freq);
6782 pref_freq = 0;
6783 }
6784
6785 /*
6786 * Stop any find/listen operations before invitation and possibly
6787 * connection establishment.
6788 */
6789 wpas_p2p_stop_find_oper(wpa_s);
6790
6791 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6792 ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
6793 1, pref_freq, -1);
6794 }
6795
6796
6797 /* Invite to join an active group */
6798 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
6799 const u8 *peer_addr, const u8 *go_dev_addr)
6800 {
6801 struct wpa_global *global = wpa_s->global;
6802 enum p2p_invite_role role;
6803 u8 *bssid = NULL;
6804 struct wpa_ssid *ssid;
6805 int persistent;
6806 int freq = 0, force_freq = 0, pref_freq = 0;
6807 int res;
6808 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6809
6810 wpa_s->p2p_persistent_go_freq = 0;
6811 wpa_s->p2p_go_ht40 = 0;
6812 wpa_s->p2p_go_vht = 0;
6813 wpa_s->p2p_go_vht_center_freq2 = 0;
6814 wpa_s->p2p_go_max_oper_chwidth = 0;
6815
6816 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6817 if (os_strcmp(wpa_s->ifname, ifname) == 0)
6818 break;
6819 }
6820 if (wpa_s == NULL) {
6821 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
6822 return -1;
6823 }
6824
6825 ssid = wpa_s->current_ssid;
6826 if (ssid == NULL) {
6827 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
6828 "invitation");
6829 return -1;
6830 }
6831
6832 wpa_s->global->p2p_invite_group = wpa_s;
6833 persistent = ssid->p2p_persistent_group &&
6834 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
6835 ssid->ssid, ssid->ssid_len);
6836
6837 if (ssid->mode == WPAS_MODE_P2P_GO) {
6838 role = P2P_INVITE_ROLE_ACTIVE_GO;
6839 bssid = wpa_s->own_addr;
6840 if (go_dev_addr == NULL)
6841 go_dev_addr = wpa_s->global->p2p_dev_addr;
6842 freq = ssid->frequency;
6843 } else {
6844 role = P2P_INVITE_ROLE_CLIENT;
6845 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
6846 wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
6847 "invite to current group");
6848 return -1;
6849 }
6850 bssid = wpa_s->bssid;
6851 if (go_dev_addr == NULL &&
6852 !is_zero_ether_addr(wpa_s->go_dev_addr))
6853 go_dev_addr = wpa_s->go_dev_addr;
6854 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6855 (int) wpa_s->assoc_freq;
6856 }
6857 wpa_s->parent->pending_invite_ssid_id = -1;
6858
6859 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6860 return -1;
6861
6862 size = P2P_MAX_PREF_CHANNELS;
6863 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6864 role == P2P_INVITE_ROLE_ACTIVE_GO,
6865 pref_freq_list, &size);
6866 if (res)
6867 return res;
6868 wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
6869
6870 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6871 ssid->ssid, ssid->ssid_len, force_freq,
6872 go_dev_addr, persistent, pref_freq, -1);
6873 }
6874
6875
6876 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
6877 {
6878 struct wpa_ssid *ssid = wpa_s->current_ssid;
6879 u8 go_dev_addr[ETH_ALEN];
6880 int network_id = -1;
6881 int persistent;
6882 int freq;
6883 u8 ip[3 * 4];
6884 char ip_addr[100];
6885
6886 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
6887 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6888 wpa_s->parent, NULL);
6889 }
6890
6891 if (!wpa_s->show_group_started || !ssid)
6892 return;
6893
6894 wpa_s->show_group_started = 0;
6895 if (!wpa_s->p2p_go_group_formation_completed &&
6896 wpa_s->global->p2p_group_formation == wpa_s) {
6897 wpa_dbg(wpa_s, MSG_DEBUG,
6898 "P2P: Marking group formation completed on client on data connection");
6899 wpa_s->p2p_go_group_formation_completed = 1;
6900 wpa_s->global->p2p_group_formation = NULL;
6901 wpa_s->p2p_in_provisioning = 0;
6902 wpa_s->p2p_in_invitation = 0;
6903 }
6904
6905 os_memset(go_dev_addr, 0, ETH_ALEN);
6906 if (ssid->bssid_set)
6907 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
6908 persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6909 ssid->ssid_len);
6910 os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
6911
6912 if (wpa_s->global->p2p_group_formation == wpa_s)
6913 wpa_s->global->p2p_group_formation = NULL;
6914
6915 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6916 (int) wpa_s->assoc_freq;
6917
6918 ip_addr[0] = '\0';
6919 if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
6920 int res;
6921
6922 res = os_snprintf(ip_addr, sizeof(ip_addr),
6923 " ip_addr=%u.%u.%u.%u "
6924 "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
6925 ip[0], ip[1], ip[2], ip[3],
6926 ip[4], ip[5], ip[6], ip[7],
6927 ip[8], ip[9], ip[10], ip[11]);
6928 if (os_snprintf_error(sizeof(ip_addr), res))
6929 ip_addr[0] = '\0';
6930 }
6931
6932 wpas_p2p_group_started(wpa_s, 0, ssid, freq,
6933 ssid->passphrase == NULL && ssid->psk_set ?
6934 ssid->psk : NULL,
6935 ssid->passphrase, go_dev_addr, persistent,
6936 ip_addr);
6937
6938 if (persistent)
6939 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
6940 ssid, go_dev_addr);
6941 if (network_id < 0)
6942 network_id = ssid->id;
6943 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
6944 }
6945
6946
6947 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
6948 u32 interval1, u32 duration2, u32 interval2)
6949 {
6950 int ret;
6951
6952 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6953 return -1;
6954
6955 if (wpa_s->wpa_state < WPA_ASSOCIATED ||
6956 wpa_s->current_ssid == NULL ||
6957 wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
6958 return -1;
6959
6960 ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
6961 wpa_s->own_addr, wpa_s->assoc_freq,
6962 duration1, interval1, duration2, interval2);
6963 if (ret == 0)
6964 wpa_s->waiting_presence_resp = 1;
6965
6966 return ret;
6967 }
6968
6969
6970 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
6971 unsigned int interval)
6972 {
6973 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6974 return -1;
6975
6976 return p2p_ext_listen(wpa_s->global->p2p, period, interval);
6977 }
6978
6979
6980 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
6981 {
6982 if (wpa_s->current_ssid == NULL) {
6983 /*
6984 * current_ssid can be cleared when P2P client interface gets
6985 * disconnected, so assume this interface was used as P2P
6986 * client.
6987 */
6988 return 1;
6989 }
6990 return wpa_s->current_ssid->p2p_group &&
6991 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
6992 }
6993
6994
6995 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
6996 {
6997 struct wpa_supplicant *wpa_s = eloop_ctx;
6998
6999 if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
7000 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
7001 "disabled");
7002 return;
7003 }
7004
7005 wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
7006 "group");
7007 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
7008 }
7009
7010
7011 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
7012 {
7013 int timeout;
7014
7015 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7016 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7017
7018 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7019 return;
7020
7021 timeout = wpa_s->conf->p2p_group_idle;
7022 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
7023 (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
7024 timeout = P2P_MAX_CLIENT_IDLE;
7025
7026 if (timeout == 0)
7027 return;
7028
7029 if (timeout < 0) {
7030 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
7031 timeout = 0; /* special client mode no-timeout */
7032 else
7033 return;
7034 }
7035
7036 if (wpa_s->p2p_in_provisioning) {
7037 /*
7038 * Use the normal group formation timeout during the
7039 * provisioning phase to avoid terminating this process too
7040 * early due to group idle timeout.
7041 */
7042 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7043 "during provisioning");
7044 return;
7045 }
7046
7047 if (wpa_s->show_group_started) {
7048 /*
7049 * Use the normal group formation timeout between the end of
7050 * the provisioning phase and completion of 4-way handshake to
7051 * avoid terminating this process too early due to group idle
7052 * timeout.
7053 */
7054 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7055 "while waiting for initial 4-way handshake to "
7056 "complete");
7057 return;
7058 }
7059
7060 wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
7061 timeout);
7062 eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
7063 wpa_s, NULL);
7064 }
7065
7066
7067 /* Returns 1 if the interface was removed */
7068 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7069 u16 reason_code, const u8 *ie, size_t ie_len,
7070 int locally_generated)
7071 {
7072 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7073 return 0;
7074
7075 if (!locally_generated)
7076 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7077 ie_len);
7078
7079 if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
7080 wpa_s->current_ssid &&
7081 wpa_s->current_ssid->p2p_group &&
7082 wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
7083 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
7084 "session is ending");
7085 if (wpas_p2p_group_delete(wpa_s,
7086 P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
7087 > 0)
7088 return 1;
7089 }
7090
7091 return 0;
7092 }
7093
7094
7095 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7096 u16 reason_code, const u8 *ie, size_t ie_len,
7097 int locally_generated)
7098 {
7099 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7100 return;
7101
7102 if (!locally_generated)
7103 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7104 ie_len);
7105 }
7106
7107
7108 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
7109 {
7110 struct p2p_data *p2p = wpa_s->global->p2p;
7111
7112 if (p2p == NULL)
7113 return;
7114
7115 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
7116 return;
7117
7118 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
7119 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
7120
7121 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
7122 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
7123
7124 if (wpa_s->wps &&
7125 (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
7126 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
7127
7128 if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
7129 p2p_set_uuid(p2p, wpa_s->wps->uuid);
7130
7131 if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
7132 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
7133 p2p_set_model_name(p2p, wpa_s->conf->model_name);
7134 p2p_set_model_number(p2p, wpa_s->conf->model_number);
7135 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
7136 }
7137
7138 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
7139 p2p_set_sec_dev_types(p2p,
7140 (void *) wpa_s->conf->sec_device_type,
7141 wpa_s->conf->num_sec_device_types);
7142
7143 if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
7144 int i;
7145 p2p_remove_wps_vendor_extensions(p2p);
7146 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
7147 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
7148 continue;
7149 p2p_add_wps_vendor_extension(
7150 p2p, wpa_s->conf->wps_vendor_ext[i]);
7151 }
7152 }
7153
7154 if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
7155 wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
7156 char country[3];
7157 country[0] = wpa_s->conf->country[0];
7158 country[1] = wpa_s->conf->country[1];
7159 country[2] = 0x04;
7160 p2p_set_country(p2p, country);
7161 }
7162
7163 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
7164 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
7165 wpa_s->conf->p2p_ssid_postfix ?
7166 os_strlen(wpa_s->conf->p2p_ssid_postfix) :
7167 0);
7168 }
7169
7170 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
7171 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
7172
7173 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
7174 u8 reg_class, channel;
7175 int ret;
7176 unsigned int r;
7177 u8 channel_forced;
7178
7179 if (wpa_s->conf->p2p_listen_reg_class &&
7180 wpa_s->conf->p2p_listen_channel) {
7181 reg_class = wpa_s->conf->p2p_listen_reg_class;
7182 channel = wpa_s->conf->p2p_listen_channel;
7183 channel_forced = 1;
7184 } else {
7185 reg_class = 81;
7186 /*
7187 * Pick one of the social channels randomly as the
7188 * listen channel.
7189 */
7190 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7191 channel = 1;
7192 else
7193 channel = 1 + (r % 3) * 5;
7194 channel_forced = 0;
7195 }
7196 ret = p2p_set_listen_channel(p2p, reg_class, channel,
7197 channel_forced);
7198 if (ret)
7199 wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
7200 "failed: %d", ret);
7201 }
7202 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
7203 u8 op_reg_class, op_channel, cfg_op_channel;
7204 int ret = 0;
7205 unsigned int r;
7206 if (wpa_s->conf->p2p_oper_reg_class &&
7207 wpa_s->conf->p2p_oper_channel) {
7208 op_reg_class = wpa_s->conf->p2p_oper_reg_class;
7209 op_channel = wpa_s->conf->p2p_oper_channel;
7210 cfg_op_channel = 1;
7211 } else {
7212 op_reg_class = 81;
7213 /*
7214 * Use random operation channel from (1, 6, 11)
7215 *if no other preference is indicated.
7216 */
7217 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7218 op_channel = 1;
7219 else
7220 op_channel = 1 + (r % 3) * 5;
7221 cfg_op_channel = 0;
7222 }
7223 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
7224 cfg_op_channel);
7225 if (ret)
7226 wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
7227 "failed: %d", ret);
7228 }
7229
7230 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
7231 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
7232 wpa_s->conf->p2p_pref_chan) < 0) {
7233 wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
7234 "update failed");
7235 }
7236
7237 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
7238 wpa_printf(MSG_ERROR, "P2P: No GO channel list "
7239 "update failed");
7240 }
7241 }
7242
7243 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
7244 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
7245 }
7246
7247
7248 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
7249 int duration)
7250 {
7251 if (!wpa_s->ap_iface)
7252 return -1;
7253 return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
7254 duration);
7255 }
7256
7257
7258 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
7259 {
7260 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7261 return -1;
7262
7263 wpa_s->global->cross_connection = enabled;
7264 p2p_set_cross_connect(wpa_s->global->p2p, enabled);
7265
7266 if (!enabled) {
7267 struct wpa_supplicant *iface;
7268
7269 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7270 {
7271 if (iface->cross_connect_enabled == 0)
7272 continue;
7273
7274 iface->cross_connect_enabled = 0;
7275 iface->cross_connect_in_use = 0;
7276 wpa_msg_global(iface->parent, MSG_INFO,
7277 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7278 iface->ifname,
7279 iface->cross_connect_uplink);
7280 }
7281 }
7282
7283 return 0;
7284 }
7285
7286
7287 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
7288 {
7289 struct wpa_supplicant *iface;
7290
7291 if (!uplink->global->cross_connection)
7292 return;
7293
7294 for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7295 if (!iface->cross_connect_enabled)
7296 continue;
7297 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7298 0)
7299 continue;
7300 if (iface->ap_iface == NULL)
7301 continue;
7302 if (iface->cross_connect_in_use)
7303 continue;
7304
7305 iface->cross_connect_in_use = 1;
7306 wpa_msg_global(iface->parent, MSG_INFO,
7307 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7308 iface->ifname, iface->cross_connect_uplink);
7309 }
7310 }
7311
7312
7313 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
7314 {
7315 struct wpa_supplicant *iface;
7316
7317 for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7318 if (!iface->cross_connect_enabled)
7319 continue;
7320 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7321 0)
7322 continue;
7323 if (!iface->cross_connect_in_use)
7324 continue;
7325
7326 wpa_msg_global(iface->parent, MSG_INFO,
7327 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7328 iface->ifname, iface->cross_connect_uplink);
7329 iface->cross_connect_in_use = 0;
7330 }
7331 }
7332
7333
7334 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
7335 {
7336 if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
7337 wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
7338 wpa_s->cross_connect_disallowed)
7339 wpas_p2p_disable_cross_connect(wpa_s);
7340 else
7341 wpas_p2p_enable_cross_connect(wpa_s);
7342 if (!wpa_s->ap_iface &&
7343 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7344 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7345 }
7346
7347
7348 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
7349 {
7350 wpas_p2p_disable_cross_connect(wpa_s);
7351 if (!wpa_s->ap_iface &&
7352 !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
7353 wpa_s, NULL))
7354 wpas_p2p_set_group_idle_timeout(wpa_s);
7355 }
7356
7357
7358 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
7359 {
7360 struct wpa_supplicant *iface;
7361
7362 if (!wpa_s->global->cross_connection)
7363 return;
7364
7365 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7366 if (iface == wpa_s)
7367 continue;
7368 if (iface->drv_flags &
7369 WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
7370 continue;
7371 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) &&
7372 iface != wpa_s->parent)
7373 continue;
7374
7375 wpa_s->cross_connect_enabled = 1;
7376 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
7377 sizeof(wpa_s->cross_connect_uplink));
7378 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
7379 "%s to %s whenever uplink is available",
7380 wpa_s->ifname, wpa_s->cross_connect_uplink);
7381
7382 if (iface->ap_iface || iface->current_ssid == NULL ||
7383 iface->current_ssid->mode != WPAS_MODE_INFRA ||
7384 iface->cross_connect_disallowed ||
7385 iface->wpa_state != WPA_COMPLETED)
7386 break;
7387
7388 wpa_s->cross_connect_in_use = 1;
7389 wpa_msg_global(wpa_s->parent, MSG_INFO,
7390 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7391 wpa_s->ifname, wpa_s->cross_connect_uplink);
7392 break;
7393 }
7394 }
7395
7396
7397 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
7398 {
7399 if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
7400 !wpa_s->p2p_in_provisioning)
7401 return 0; /* not P2P client operation */
7402
7403 wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
7404 "session overlap");
7405 if (wpa_s != wpa_s->parent)
7406 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
7407 wpas_p2p_group_formation_failed(wpa_s, 0);
7408 return 1;
7409 }
7410
7411
7412 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
7413 {
7414 struct wpa_supplicant *wpa_s = eloop_ctx;
7415 wpas_p2p_notif_pbc_overlap(wpa_s);
7416 }
7417
7418
7419 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s,
7420 enum wpas_p2p_channel_update_trig trig)
7421 {
7422 struct p2p_channels chan, cli_chan;
7423 struct wpa_used_freq_data *freqs = NULL;
7424 unsigned int num = wpa_s->num_multichan_concurrent;
7425
7426 if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
7427 return;
7428
7429 freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
7430 if (!freqs)
7431 return;
7432
7433 num = get_shared_radio_freqs_data(wpa_s, freqs, num);
7434
7435 os_memset(&chan, 0, sizeof(chan));
7436 os_memset(&cli_chan, 0, sizeof(cli_chan));
7437 if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
7438 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
7439 "channel list");
7440 return;
7441 }
7442
7443 p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
7444
7445 wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
7446
7447 /*
7448 * The used frequencies map changed, so it is possible that a GO is
7449 * using a channel that is no longer valid for P2P use. It is also
7450 * possible that due to policy consideration, it would be preferable to
7451 * move it to a frequency already used by other station interfaces.
7452 */
7453 wpas_p2p_consider_moving_gos(wpa_s, freqs, num, trig);
7454
7455 os_free(freqs);
7456 }
7457
7458
7459 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
7460 struct wpa_scan_results *scan_res)
7461 {
7462 wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
7463 }
7464
7465
7466 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
7467 {
7468 struct wpa_global *global = wpa_s->global;
7469 int found = 0;
7470 const u8 *peer;
7471
7472 if (global->p2p == NULL)
7473 return -1;
7474
7475 wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
7476
7477 if (wpa_s->pending_interface_name[0] &&
7478 !is_zero_ether_addr(wpa_s->pending_interface_addr))
7479 found = 1;
7480
7481 peer = p2p_get_go_neg_peer(global->p2p);
7482 if (peer) {
7483 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
7484 MACSTR, MAC2STR(peer));
7485 p2p_unauthorize(global->p2p, peer);
7486 found = 1;
7487 }
7488
7489 if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
7490 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
7491 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
7492 found = 1;
7493 }
7494
7495 if (wpa_s->pending_pd_before_join) {
7496 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
7497 wpa_s->pending_pd_before_join = 0;
7498 found = 1;
7499 }
7500
7501 wpas_p2p_stop_find(wpa_s);
7502
7503 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7504 if (wpa_s == global->p2p_group_formation &&
7505 (wpa_s->p2p_in_provisioning ||
7506 wpa_s->parent->pending_interface_type ==
7507 WPA_IF_P2P_CLIENT)) {
7508 wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
7509 "formation found - cancelling",
7510 wpa_s->ifname);
7511 found = 1;
7512 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7513 wpa_s->parent, NULL);
7514 if (wpa_s->p2p_in_provisioning) {
7515 wpas_group_formation_completed(wpa_s, 0, 0);
7516 break;
7517 }
7518 wpas_p2p_group_delete(wpa_s,
7519 P2P_GROUP_REMOVAL_REQUESTED);
7520 break;
7521 } else if (wpa_s->p2p_in_invitation) {
7522 wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
7523 wpa_s->ifname);
7524 found = 1;
7525 wpas_p2p_group_formation_failed(wpa_s, 0);
7526 }
7527 }
7528
7529 if (!found) {
7530 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
7531 return -1;
7532 }
7533
7534 return 0;
7535 }
7536
7537
7538 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
7539 {
7540 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7541 return;
7542
7543 wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
7544 "being available anymore");
7545 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
7546 }
7547
7548
7549 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
7550 int freq_24, int freq_5, int freq_overall)
7551 {
7552 struct p2p_data *p2p = wpa_s->global->p2p;
7553 if (p2p == NULL)
7554 return;
7555 p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
7556 }
7557
7558
7559 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
7560 {
7561 u8 peer[ETH_ALEN];
7562 struct p2p_data *p2p = wpa_s->global->p2p;
7563
7564 if (p2p == NULL)
7565 return -1;
7566
7567 if (hwaddr_aton(addr, peer))
7568 return -1;
7569
7570 return p2p_unauthorize(p2p, peer);
7571 }
7572
7573
7574 /**
7575 * wpas_p2p_disconnect - Disconnect from a P2P Group
7576 * @wpa_s: Pointer to wpa_supplicant data
7577 * Returns: 0 on success, -1 on failure
7578 *
7579 * This can be used to disconnect from a group in which the local end is a P2P
7580 * Client or to end a P2P Group in case the local end is the Group Owner. If a
7581 * virtual network interface was created for this group, that interface will be
7582 * removed. Otherwise, only the configured P2P group network will be removed
7583 * from the interface.
7584 */
7585 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
7586 {
7587
7588 if (wpa_s == NULL)
7589 return -1;
7590
7591 return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
7592 -1 : 0;
7593 }
7594
7595
7596 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
7597 {
7598 int ret;
7599
7600 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7601 return 0;
7602
7603 ret = p2p_in_progress(wpa_s->global->p2p);
7604 if (ret == 0) {
7605 /*
7606 * Check whether there is an ongoing WPS provisioning step (or
7607 * other parts of group formation) on another interface since
7608 * p2p_in_progress() does not report this to avoid issues for
7609 * scans during such provisioning step.
7610 */
7611 if (wpa_s->global->p2p_group_formation &&
7612 wpa_s->global->p2p_group_formation != wpa_s) {
7613 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
7614 "in group formation",
7615 wpa_s->global->p2p_group_formation->ifname);
7616 ret = 1;
7617 }
7618 }
7619
7620 if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
7621 struct os_reltime now;
7622 os_get_reltime(&now);
7623 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
7624 P2P_MAX_INITIAL_CONN_WAIT_GO)) {
7625 /* Wait for the first client has expired */
7626 wpa_s->global->p2p_go_wait_client.sec = 0;
7627 } else {
7628 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
7629 ret = 1;
7630 }
7631 }
7632
7633 return ret;
7634 }
7635
7636
7637 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
7638 struct wpa_ssid *ssid)
7639 {
7640 if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
7641 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7642 wpa_s->parent, NULL) > 0) {
7643 /**
7644 * Remove the network by scheduling the group formation
7645 * timeout to happen immediately. The teardown code
7646 * needs to be scheduled to run asynch later so that we
7647 * don't delete data from under ourselves unexpectedly.
7648 * Calling wpas_p2p_group_formation_timeout directly
7649 * causes a series of crashes in WPS failure scenarios.
7650 */
7651 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
7652 "P2P group network getting removed");
7653 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
7654 wpa_s->parent, NULL);
7655 }
7656 }
7657
7658
7659 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
7660 const u8 *addr, const u8 *ssid,
7661 size_t ssid_len)
7662 {
7663 struct wpa_ssid *s;
7664 size_t i;
7665
7666 for (s = wpa_s->conf->ssid; s; s = s->next) {
7667 if (s->disabled != 2)
7668 continue;
7669 if (ssid &&
7670 (ssid_len != s->ssid_len ||
7671 os_memcmp(ssid, s->ssid, ssid_len) != 0))
7672 continue;
7673 if (addr == NULL) {
7674 if (s->mode == WPAS_MODE_P2P_GO)
7675 return s;
7676 continue;
7677 }
7678 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
7679 return s; /* peer is GO in the persistent group */
7680 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
7681 continue;
7682 for (i = 0; i < s->num_p2p_clients; i++) {
7683 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
7684 addr, ETH_ALEN) == 0)
7685 return s; /* peer is P2P client in persistent
7686 * group */
7687 }
7688 }
7689
7690 return NULL;
7691 }
7692
7693
7694 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
7695 const u8 *addr)
7696 {
7697 if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7698 wpa_s->parent, NULL) > 0) {
7699 /*
7700 * This can happen if WPS provisioning step is not terminated
7701 * cleanly (e.g., P2P Client does not send WSC_Done). Since the
7702 * peer was able to connect, there is no need to time out group
7703 * formation after this, though. In addition, this is used with
7704 * the initial connection wait on the GO as a separate formation
7705 * timeout and as such, expected to be hit after the initial WPS
7706 * provisioning step.
7707 */
7708 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
7709
7710 if (!wpa_s->p2p_go_group_formation_completed &&
7711 !wpa_s->group_formation_reported) {
7712 /*
7713 * GO has not yet notified group formation success since
7714 * the WPS step was not completed cleanly. Do that
7715 * notification now since the P2P Client was able to
7716 * connect and as such, must have received the
7717 * credential from the WPS step.
7718 */
7719 if (wpa_s->global->p2p)
7720 p2p_wps_success_cb(wpa_s->global->p2p, addr);
7721 wpas_group_formation_completed(wpa_s, 1, 0);
7722 }
7723 }
7724 if (!wpa_s->p2p_go_group_formation_completed) {
7725 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
7726 wpa_s->p2p_go_group_formation_completed = 1;
7727 wpa_s->global->p2p_group_formation = NULL;
7728 wpa_s->p2p_in_provisioning = 0;
7729 wpa_s->p2p_in_invitation = 0;
7730 }
7731 wpa_s->global->p2p_go_wait_client.sec = 0;
7732 if (addr == NULL)
7733 return;
7734 wpas_p2p_add_persistent_group_client(wpa_s, addr);
7735 }
7736
7737
7738 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
7739 int group_added)
7740 {
7741 struct wpa_supplicant *group = wpa_s;
7742 int ret = 0;
7743
7744 if (wpa_s->global->p2p_group_formation)
7745 group = wpa_s->global->p2p_group_formation;
7746 wpa_s = wpa_s->global->p2p_init_wpa_s;
7747 offchannel_send_action_done(wpa_s);
7748 if (group_added)
7749 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
7750 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
7751 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
7752 wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
7753 0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
7754 wpa_s->p2p_go_vht_center_freq2,
7755 wpa_s->p2p_persistent_id,
7756 wpa_s->p2p_pd_before_go_neg,
7757 wpa_s->p2p_go_ht40,
7758 wpa_s->p2p_go_vht,
7759 wpa_s->p2p_go_max_oper_chwidth);
7760 return ret;
7761 }
7762
7763
7764 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
7765 {
7766 int res;
7767
7768 if (!wpa_s->p2p_fallback_to_go_neg ||
7769 wpa_s->p2p_in_provisioning <= 5)
7770 return 0;
7771
7772 if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
7773 return 0; /* peer operating as a GO */
7774
7775 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
7776 "fallback to GO Negotiation");
7777 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG
7778 "reason=GO-not-found");
7779 res = wpas_p2p_fallback_to_go_neg(wpa_s, 1);
7780
7781 return res == 1 ? 2 : 1;
7782 }
7783
7784
7785 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
7786 {
7787 struct wpa_supplicant *ifs;
7788
7789 if (wpa_s->wpa_state > WPA_SCANNING) {
7790 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
7791 "concurrent operation",
7792 wpa_s->conf->p2p_search_delay);
7793 return wpa_s->conf->p2p_search_delay;
7794 }
7795
7796 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
7797 radio_list) {
7798 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
7799 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
7800 "delay due to concurrent operation on "
7801 "interface %s",
7802 wpa_s->conf->p2p_search_delay,
7803 ifs->ifname);
7804 return wpa_s->conf->p2p_search_delay;
7805 }
7806 }
7807
7808 return 0;
7809 }
7810
7811
7812 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
7813 struct wpa_ssid *s, const u8 *addr,
7814 int iface_addr)
7815 {
7816 struct psk_list_entry *psk, *tmp;
7817 int changed = 0;
7818
7819 dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
7820 list) {
7821 if ((iface_addr && !psk->p2p &&
7822 os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
7823 (!iface_addr && psk->p2p &&
7824 os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
7825 wpa_dbg(wpa_s, MSG_DEBUG,
7826 "P2P: Remove persistent group PSK list entry for "
7827 MACSTR " p2p=%u",
7828 MAC2STR(psk->addr), psk->p2p);
7829 dl_list_del(&psk->list);
7830 os_free(psk);
7831 changed++;
7832 }
7833 }
7834
7835 return changed;
7836 }
7837
7838
7839 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
7840 const u8 *p2p_dev_addr,
7841 const u8 *psk, size_t psk_len)
7842 {
7843 struct wpa_ssid *ssid = wpa_s->current_ssid;
7844 struct wpa_ssid *persistent;
7845 struct psk_list_entry *p, *last;
7846
7847 if (psk_len != sizeof(p->psk))
7848 return;
7849
7850 if (p2p_dev_addr) {
7851 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
7852 " p2p_dev_addr=" MACSTR,
7853 MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
7854 if (is_zero_ether_addr(p2p_dev_addr))
7855 p2p_dev_addr = NULL;
7856 } else {
7857 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
7858 MAC2STR(mac_addr));
7859 }
7860
7861 if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
7862 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
7863 /* To be added to persistent group once created */
7864 if (wpa_s->global->add_psk == NULL) {
7865 wpa_s->global->add_psk = os_zalloc(sizeof(*p));
7866 if (wpa_s->global->add_psk == NULL)
7867 return;
7868 }
7869 p = wpa_s->global->add_psk;
7870 if (p2p_dev_addr) {
7871 p->p2p = 1;
7872 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7873 } else {
7874 p->p2p = 0;
7875 os_memcpy(p->addr, mac_addr, ETH_ALEN);
7876 }
7877 os_memcpy(p->psk, psk, psk_len);
7878 return;
7879 }
7880
7881 if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
7882 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
7883 return;
7884 }
7885
7886 persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
7887 ssid->ssid_len);
7888 if (!persistent) {
7889 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
7890 return;
7891 }
7892
7893 p = os_zalloc(sizeof(*p));
7894 if (p == NULL)
7895 return;
7896 if (p2p_dev_addr) {
7897 p->p2p = 1;
7898 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7899 } else {
7900 p->p2p = 0;
7901 os_memcpy(p->addr, mac_addr, ETH_ALEN);
7902 }
7903 os_memcpy(p->psk, psk, psk_len);
7904
7905 if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
7906 (last = dl_list_last(&persistent->psk_list,
7907 struct psk_list_entry, list))) {
7908 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
7909 MACSTR " (p2p=%u) to make room for a new one",
7910 MAC2STR(last->addr), last->p2p);
7911 dl_list_del(&last->list);
7912 os_free(last);
7913 }
7914
7915 wpas_p2p_remove_psk_entry(wpa_s->parent, persistent,
7916 p2p_dev_addr ? p2p_dev_addr : mac_addr,
7917 p2p_dev_addr == NULL);
7918 if (p2p_dev_addr) {
7919 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
7920 MACSTR, MAC2STR(p2p_dev_addr));
7921 } else {
7922 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
7923 MAC2STR(mac_addr));
7924 }
7925 dl_list_add(&persistent->psk_list, &p->list);
7926
7927 if (wpa_s->parent->conf->update_config &&
7928 wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
7929 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
7930 }
7931
7932
7933 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
7934 struct wpa_ssid *s, const u8 *addr,
7935 int iface_addr)
7936 {
7937 int res;
7938
7939 res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
7940 if (res > 0 && wpa_s->conf->update_config &&
7941 wpa_config_write(wpa_s->confname, wpa_s->conf))
7942 wpa_dbg(wpa_s, MSG_DEBUG,
7943 "P2P: Failed to update configuration");
7944 }
7945
7946
7947 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
7948 const u8 *peer, int iface_addr)
7949 {
7950 struct hostapd_data *hapd;
7951 struct hostapd_wpa_psk *psk, *prev, *rem;
7952 struct sta_info *sta;
7953
7954 if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
7955 wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
7956 return;
7957
7958 /* Remove per-station PSK entry */
7959 hapd = wpa_s->ap_iface->bss[0];
7960 prev = NULL;
7961 psk = hapd->conf->ssid.wpa_psk;
7962 while (psk) {
7963 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
7964 (!iface_addr &&
7965 os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
7966 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
7967 MACSTR " iface_addr=%d",
7968 MAC2STR(peer), iface_addr);
7969 if (prev)
7970 prev->next = psk->next;
7971 else
7972 hapd->conf->ssid.wpa_psk = psk->next;
7973 rem = psk;
7974 psk = psk->next;
7975 os_free(rem);
7976 } else {
7977 prev = psk;
7978 psk = psk->next;
7979 }
7980 }
7981
7982 /* Disconnect from group */
7983 if (iface_addr)
7984 sta = ap_get_sta(hapd, peer);
7985 else
7986 sta = ap_get_sta_p2p(hapd, peer);
7987 if (sta) {
7988 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
7989 " (iface_addr=%d) from group",
7990 MAC2STR(peer), iface_addr);
7991 hostapd_drv_sta_deauth(hapd, sta->addr,
7992 WLAN_REASON_DEAUTH_LEAVING);
7993 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
7994 }
7995 }
7996
7997
7998 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
7999 int iface_addr)
8000 {
8001 struct wpa_ssid *s;
8002 struct wpa_supplicant *w;
8003 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
8004
8005 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
8006
8007 /* Remove from any persistent group */
8008 for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
8009 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
8010 continue;
8011 if (!iface_addr)
8012 wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0);
8013 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr);
8014 }
8015
8016 /* Remove from any operating group */
8017 for (w = wpa_s->global->ifaces; w; w = w->next)
8018 wpas_p2p_remove_client_go(w, peer, iface_addr);
8019 }
8020
8021
8022 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
8023 {
8024 struct wpa_supplicant *wpa_s = eloop_ctx;
8025 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
8026 }
8027
8028
8029 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
8030 {
8031 struct wpa_supplicant *wpa_s = eloop_ctx;
8032
8033 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
8034 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
8035 }
8036
8037
8038 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
8039 struct wpa_ssid *ssid)
8040 {
8041 struct wpa_supplicant *iface;
8042
8043 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8044 if (!iface->current_ssid ||
8045 iface->current_ssid->frequency == freq ||
8046 (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
8047 !iface->current_ssid->p2p_group))
8048 continue;
8049
8050 /* Remove the connection with least priority */
8051 if (!wpas_is_p2p_prioritized(iface)) {
8052 /* STA connection has priority over existing
8053 * P2P connection, so remove the interface. */
8054 wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
8055 eloop_register_timeout(0, 0,
8056 wpas_p2p_group_freq_conflict,
8057 iface, NULL);
8058 /* If connection in progress is P2P connection, do not
8059 * proceed for the connection. */
8060 if (wpa_s == iface)
8061 return -1;
8062 else
8063 return 0;
8064 } else {
8065 /* P2P connection has priority, disable the STA network
8066 */
8067 wpa_supplicant_disable_network(wpa_s->global->ifaces,
8068 ssid);
8069 wpa_msg(wpa_s->global->ifaces, MSG_INFO,
8070 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
8071 os_memset(wpa_s->global->ifaces->pending_bssid, 0,
8072 ETH_ALEN);
8073 /* If P2P connection is in progress, continue
8074 * connecting...*/
8075 if (wpa_s == iface)
8076 return 0;
8077 else
8078 return -1;
8079 }
8080 }
8081
8082 return 0;
8083 }
8084
8085
8086 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
8087 {
8088 struct wpa_ssid *ssid = wpa_s->current_ssid;
8089
8090 if (ssid == NULL || !ssid->p2p_group)
8091 return 0;
8092
8093 if (wpa_s->p2p_last_4way_hs_fail &&
8094 wpa_s->p2p_last_4way_hs_fail == ssid) {
8095 u8 go_dev_addr[ETH_ALEN];
8096 struct wpa_ssid *persistent;
8097
8098 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
8099 ssid->ssid,
8100 ssid->ssid_len) <= 0) {
8101 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
8102 goto disconnect;
8103 }
8104
8105 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
8106 MACSTR, MAC2STR(go_dev_addr));
8107 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr,
8108 ssid->ssid,
8109 ssid->ssid_len);
8110 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
8111 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
8112 goto disconnect;
8113 }
8114 wpa_msg_global(wpa_s->parent, MSG_INFO,
8115 P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
8116 persistent->id);
8117 disconnect:
8118 wpa_s->p2p_last_4way_hs_fail = NULL;
8119 /*
8120 * Remove the group from a timeout to avoid issues with caller
8121 * continuing to use the interface if this is on a P2P group
8122 * interface.
8123 */
8124 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
8125 wpa_s, NULL);
8126 return 1;
8127 }
8128
8129 wpa_s->p2p_last_4way_hs_fail = ssid;
8130 return 0;
8131 }
8132
8133
8134 #ifdef CONFIG_WPS_NFC
8135
8136 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
8137 struct wpabuf *p2p)
8138 {
8139 struct wpabuf *ret;
8140 size_t wsc_len;
8141
8142 if (p2p == NULL) {
8143 wpabuf_free(wsc);
8144 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
8145 return NULL;
8146 }
8147
8148 wsc_len = wsc ? wpabuf_len(wsc) : 0;
8149 ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
8150 if (ret == NULL) {
8151 wpabuf_free(wsc);
8152 wpabuf_free(p2p);
8153 return NULL;
8154 }
8155
8156 wpabuf_put_be16(ret, wsc_len);
8157 if (wsc)
8158 wpabuf_put_buf(ret, wsc);
8159 wpabuf_put_be16(ret, wpabuf_len(p2p));
8160 wpabuf_put_buf(ret, p2p);
8161
8162 wpabuf_free(wsc);
8163 wpabuf_free(p2p);
8164 wpa_hexdump_buf(MSG_DEBUG,
8165 "P2P: Generated NFC connection handover message", ret);
8166
8167 if (ndef && ret) {
8168 struct wpabuf *tmp;
8169 tmp = ndef_build_p2p(ret);
8170 wpabuf_free(ret);
8171 if (tmp == NULL) {
8172 wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
8173 return NULL;
8174 }
8175 ret = tmp;
8176 }
8177
8178 return ret;
8179 }
8180
8181
8182 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
8183 struct wpa_ssid **ssid, u8 *go_dev_addr)
8184 {
8185 struct wpa_supplicant *iface;
8186
8187 if (go_dev_addr)
8188 os_memset(go_dev_addr, 0, ETH_ALEN);
8189 if (ssid)
8190 *ssid = NULL;
8191 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8192 if (iface->wpa_state < WPA_ASSOCIATING ||
8193 iface->current_ssid == NULL || iface->assoc_freq == 0 ||
8194 !iface->current_ssid->p2p_group ||
8195 iface->current_ssid->mode != WPAS_MODE_INFRA)
8196 continue;
8197 if (ssid)
8198 *ssid = iface->current_ssid;
8199 if (go_dev_addr)
8200 os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
8201 return iface->assoc_freq;
8202 }
8203 return 0;
8204 }
8205
8206
8207 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
8208 int ndef)
8209 {
8210 struct wpabuf *wsc, *p2p;
8211 struct wpa_ssid *ssid;
8212 u8 go_dev_addr[ETH_ALEN];
8213 int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8214
8215 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
8216 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
8217 return NULL;
8218 }
8219
8220 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8221 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8222 &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
8223 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
8224 return NULL;
8225 }
8226
8227 if (cli_freq == 0) {
8228 wsc = wps_build_nfc_handover_req_p2p(
8229 wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
8230 } else
8231 wsc = NULL;
8232 p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
8233 go_dev_addr, ssid ? ssid->ssid : NULL,
8234 ssid ? ssid->ssid_len : 0);
8235
8236 return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8237 }
8238
8239
8240 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
8241 int ndef, int tag)
8242 {
8243 struct wpabuf *wsc, *p2p;
8244 struct wpa_ssid *ssid;
8245 u8 go_dev_addr[ETH_ALEN];
8246 int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8247
8248 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8249 return NULL;
8250
8251 if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8252 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8253 &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8254 return NULL;
8255
8256 if (cli_freq == 0) {
8257 wsc = wps_build_nfc_handover_sel_p2p(
8258 wpa_s->parent->wps,
8259 tag ? wpa_s->conf->wps_nfc_dev_pw_id :
8260 DEV_PW_NFC_CONNECTION_HANDOVER,
8261 wpa_s->conf->wps_nfc_dh_pubkey,
8262 tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
8263 } else
8264 wsc = NULL;
8265 p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
8266 go_dev_addr, ssid ? ssid->ssid : NULL,
8267 ssid ? ssid->ssid_len : 0);
8268
8269 return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8270 }
8271
8272
8273 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
8274 struct p2p_nfc_params *params)
8275 {
8276 wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
8277 "connection handover (freq=%d)",
8278 params->go_freq);
8279
8280 if (params->go_freq && params->go_ssid_len) {
8281 wpa_s->p2p_wps_method = WPS_NFC;
8282 wpa_s->pending_join_wps_method = WPS_NFC;
8283 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
8284 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
8285 ETH_ALEN);
8286 return wpas_p2p_join_start(wpa_s, params->go_freq,
8287 params->go_ssid,
8288 params->go_ssid_len);
8289 }
8290
8291 return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8292 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
8293 params->go_freq, wpa_s->p2p_go_vht_center_freq2,
8294 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth);
8295 }
8296
8297
8298 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
8299 struct p2p_nfc_params *params, int tag)
8300 {
8301 int res, persistent;
8302 struct wpa_ssid *ssid;
8303
8304 wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
8305 "connection handover");
8306 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
8307 ssid = wpa_s->current_ssid;
8308 if (ssid == NULL)
8309 continue;
8310 if (ssid->mode != WPAS_MODE_P2P_GO)
8311 continue;
8312 if (wpa_s->ap_iface == NULL)
8313 continue;
8314 break;
8315 }
8316 if (wpa_s == NULL) {
8317 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
8318 return -1;
8319 }
8320
8321 if (wpa_s->parent->p2p_oob_dev_pw_id !=
8322 DEV_PW_NFC_CONNECTION_HANDOVER &&
8323 !wpa_s->parent->p2p_oob_dev_pw) {
8324 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
8325 return -1;
8326 }
8327 res = wpas_ap_wps_add_nfc_pw(
8328 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
8329 wpa_s->parent->p2p_oob_dev_pw,
8330 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
8331 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
8332 if (res)
8333 return res;
8334
8335 if (!tag) {
8336 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
8337 return 0;
8338 }
8339
8340 if (!params->peer ||
8341 !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
8342 return 0;
8343
8344 wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
8345 " to join", MAC2STR(params->peer->p2p_device_addr));
8346
8347 wpa_s->global->p2p_invite_group = wpa_s;
8348 persistent = ssid->p2p_persistent_group &&
8349 wpas_p2p_get_persistent(wpa_s->parent,
8350 params->peer->p2p_device_addr,
8351 ssid->ssid, ssid->ssid_len);
8352 wpa_s->parent->pending_invite_ssid_id = -1;
8353
8354 return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
8355 P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
8356 ssid->ssid, ssid->ssid_len, ssid->frequency,
8357 wpa_s->global->p2p_dev_addr, persistent, 0,
8358 wpa_s->parent->p2p_oob_dev_pw_id);
8359 }
8360
8361
8362 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
8363 struct p2p_nfc_params *params,
8364 int forced_freq)
8365 {
8366 wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
8367 "connection handover");
8368 return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8369 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
8370 forced_freq, wpa_s->p2p_go_vht_center_freq2,
8371 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth);
8372 }
8373
8374
8375 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
8376 struct p2p_nfc_params *params,
8377 int forced_freq)
8378 {
8379 int res;
8380
8381 wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
8382 "connection handover");
8383 res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8384 WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
8385 forced_freq, wpa_s->p2p_go_vht_center_freq2,
8386 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth);
8387 if (res)
8388 return res;
8389
8390 res = wpas_p2p_listen(wpa_s, 60);
8391 if (res) {
8392 p2p_unauthorize(wpa_s->global->p2p,
8393 params->peer->p2p_device_addr);
8394 }
8395
8396 return res;
8397 }
8398
8399
8400 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
8401 const struct wpabuf *data,
8402 int sel, int tag, int forced_freq)
8403 {
8404 const u8 *pos, *end;
8405 u16 len, id;
8406 struct p2p_nfc_params params;
8407 int res;
8408
8409 os_memset(&params, 0, sizeof(params));
8410 params.sel = sel;
8411
8412 wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
8413
8414 pos = wpabuf_head(data);
8415 end = pos + wpabuf_len(data);
8416
8417 if (end - pos < 2) {
8418 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
8419 "attributes");
8420 return -1;
8421 }
8422 len = WPA_GET_BE16(pos);
8423 pos += 2;
8424 if (len > end - pos) {
8425 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
8426 "attributes");
8427 return -1;
8428 }
8429 params.wsc_attr = pos;
8430 params.wsc_len = len;
8431 pos += len;
8432
8433 if (end - pos < 2) {
8434 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
8435 "attributes");
8436 return -1;
8437 }
8438 len = WPA_GET_BE16(pos);
8439 pos += 2;
8440 if (len > end - pos) {
8441 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
8442 "attributes");
8443 return -1;
8444 }
8445 params.p2p_attr = pos;
8446 params.p2p_len = len;
8447 pos += len;
8448
8449 wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
8450 params.wsc_attr, params.wsc_len);
8451 wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
8452 params.p2p_attr, params.p2p_len);
8453 if (pos < end) {
8454 wpa_hexdump(MSG_DEBUG,
8455 "P2P: Ignored extra data after P2P attributes",
8456 pos, end - pos);
8457 }
8458
8459 res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
8460 if (res)
8461 return res;
8462
8463 if (params.next_step == NO_ACTION)
8464 return 0;
8465
8466 if (params.next_step == BOTH_GO) {
8467 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
8468 MAC2STR(params.peer->p2p_device_addr));
8469 return 0;
8470 }
8471
8472 if (params.next_step == PEER_CLIENT) {
8473 if (!is_zero_ether_addr(params.go_dev_addr)) {
8474 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8475 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
8476 " ssid=\"%s\"",
8477 MAC2STR(params.peer->p2p_device_addr),
8478 params.go_freq,
8479 MAC2STR(params.go_dev_addr),
8480 wpa_ssid_txt(params.go_ssid,
8481 params.go_ssid_len));
8482 } else {
8483 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8484 "peer=" MACSTR " freq=%d",
8485 MAC2STR(params.peer->p2p_device_addr),
8486 params.go_freq);
8487 }
8488 return 0;
8489 }
8490
8491 if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
8492 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
8493 MACSTR, MAC2STR(params.peer->p2p_device_addr));
8494 return 0;
8495 }
8496
8497 wpabuf_free(wpa_s->p2p_oob_dev_pw);
8498 wpa_s->p2p_oob_dev_pw = NULL;
8499
8500 if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
8501 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
8502 "received");
8503 return -1;
8504 }
8505
8506 id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
8507 wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
8508 wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
8509 params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8510 os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
8511 params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8512 wpa_s->p2p_peer_oob_pk_hash_known = 1;
8513
8514 if (tag) {
8515 if (id < 0x10) {
8516 wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
8517 "peer OOB Device Password Id %u", id);
8518 return -1;
8519 }
8520 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
8521 "Device Password Id %u", id);
8522 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
8523 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8524 params.oob_dev_pw_len -
8525 WPS_OOB_PUBKEY_HASH_LEN - 2);
8526 wpa_s->p2p_oob_dev_pw_id = id;
8527 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
8528 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8529 params.oob_dev_pw_len -
8530 WPS_OOB_PUBKEY_HASH_LEN - 2);
8531 if (wpa_s->p2p_oob_dev_pw == NULL)
8532 return -1;
8533
8534 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8535 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8536 &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8537 return -1;
8538 } else {
8539 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
8540 "without Device Password");
8541 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
8542 }
8543
8544 switch (params.next_step) {
8545 case NO_ACTION:
8546 case BOTH_GO:
8547 case PEER_CLIENT:
8548 /* already covered above */
8549 return 0;
8550 case JOIN_GROUP:
8551 return wpas_p2p_nfc_join_group(wpa_s, &params);
8552 case AUTH_JOIN:
8553 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
8554 case INIT_GO_NEG:
8555 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
8556 case RESP_GO_NEG:
8557 /* TODO: use own OOB Dev Pw */
8558 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
8559 }
8560
8561 return -1;
8562 }
8563
8564
8565 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
8566 const struct wpabuf *data, int forced_freq)
8567 {
8568 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8569 return -1;
8570
8571 return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
8572 }
8573
8574
8575 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
8576 const struct wpabuf *req,
8577 const struct wpabuf *sel, int forced_freq)
8578 {
8579 struct wpabuf *tmp;
8580 int ret;
8581
8582 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8583 return -1;
8584
8585 wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
8586
8587 wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
8588 wpabuf_head(req), wpabuf_len(req));
8589 wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
8590 wpabuf_head(sel), wpabuf_len(sel));
8591 if (forced_freq)
8592 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
8593 tmp = ndef_parse_p2p(init ? sel : req);
8594 if (tmp == NULL) {
8595 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
8596 return -1;
8597 }
8598
8599 ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
8600 forced_freq);
8601 wpabuf_free(tmp);
8602
8603 return ret;
8604 }
8605
8606
8607 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
8608 {
8609 const u8 *if_addr;
8610 int go_intent = wpa_s->conf->p2p_go_intent;
8611 struct wpa_supplicant *iface;
8612
8613 if (wpa_s->global->p2p == NULL)
8614 return -1;
8615
8616 if (!enabled) {
8617 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
8618 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
8619 {
8620 if (!iface->ap_iface)
8621 continue;
8622 hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
8623 }
8624 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
8625 0, NULL);
8626 if (wpa_s->p2p_nfc_tag_enabled)
8627 wpas_p2p_remove_pending_group_interface(wpa_s);
8628 wpa_s->p2p_nfc_tag_enabled = 0;
8629 return 0;
8630 }
8631
8632 if (wpa_s->global->p2p_disabled)
8633 return -1;
8634
8635 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
8636 wpa_s->conf->wps_nfc_dh_privkey == NULL ||
8637 wpa_s->conf->wps_nfc_dev_pw == NULL ||
8638 wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
8639 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
8640 "to allow static handover cases");
8641 return -1;
8642 }
8643
8644 wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
8645
8646 wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8647 wpabuf_free(wpa_s->p2p_oob_dev_pw);
8648 wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8649 if (wpa_s->p2p_oob_dev_pw == NULL)
8650 return -1;
8651 wpa_s->p2p_peer_oob_pk_hash_known = 0;
8652
8653 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
8654 wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
8655 /*
8656 * P2P Group Interface present and the command came on group
8657 * interface, so enable the token for the current interface.
8658 */
8659 wpa_s->create_p2p_iface = 0;
8660 } else {
8661 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
8662 }
8663
8664 if (wpa_s->create_p2p_iface) {
8665 enum wpa_driver_if_type iftype;
8666 /* Prepare to add a new interface for the group */
8667 iftype = WPA_IF_P2P_GROUP;
8668 if (go_intent == 15)
8669 iftype = WPA_IF_P2P_GO;
8670 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
8671 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
8672 "interface for the group");
8673 return -1;
8674 }
8675
8676 if_addr = wpa_s->pending_interface_addr;
8677 } else
8678 if_addr = wpa_s->own_addr;
8679
8680 wpa_s->p2p_nfc_tag_enabled = enabled;
8681
8682 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8683 struct hostapd_data *hapd;
8684 if (iface->ap_iface == NULL)
8685 continue;
8686 hapd = iface->ap_iface->bss[0];
8687 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
8688 hapd->conf->wps_nfc_dh_pubkey =
8689 wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
8690 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
8691 hapd->conf->wps_nfc_dh_privkey =
8692 wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
8693 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
8694 hapd->conf->wps_nfc_dev_pw =
8695 wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8696 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8697
8698 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
8699 wpa_dbg(iface, MSG_DEBUG,
8700 "P2P: Failed to enable NFC Tag for GO");
8701 }
8702 }
8703 p2p_set_authorized_oob_dev_pw_id(
8704 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
8705 if_addr);
8706
8707 return 0;
8708 }
8709
8710 #endif /* CONFIG_WPS_NFC */
8711
8712
8713 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
8714 struct wpa_used_freq_data *freqs,
8715 unsigned int num)
8716 {
8717 u8 curr_chan, cand, chan;
8718 unsigned int i;
8719
8720 /*
8721 * If possible, optimize the Listen channel to be a channel that is
8722 * already used by one of the other interfaces.
8723 */
8724 if (!wpa_s->conf->p2p_optimize_listen_chan)
8725 return;
8726
8727 if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
8728 return;
8729
8730 curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
8731 for (i = 0, cand = 0; i < num; i++) {
8732 ieee80211_freq_to_chan(freqs[i].freq, &chan);
8733 if (curr_chan == chan) {
8734 cand = 0;
8735 break;
8736 }
8737
8738 if (chan == 1 || chan == 6 || chan == 11)
8739 cand = chan;
8740 }
8741
8742 if (cand) {
8743 wpa_dbg(wpa_s, MSG_DEBUG,
8744 "P2P: Update Listen channel to %u based on operating channel",
8745 cand);
8746 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
8747 }
8748 }
8749
8750
8751 static int wpas_p2p_move_go_csa(struct wpa_supplicant *wpa_s)
8752 {
8753 struct hostapd_config *conf;
8754 struct p2p_go_neg_results params;
8755 struct csa_settings csa_settings;
8756 struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8757 int old_freq = current_ssid->frequency;
8758 int ret;
8759
8760 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
8761 wpa_dbg(wpa_s, MSG_DEBUG, "CSA is not enabled");
8762 return -1;
8763 }
8764
8765 /*
8766 * TODO: This function may not always work correctly. For example,
8767 * when we have a running GO and a BSS on a DFS channel.
8768 */
8769 if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, NULL)) {
8770 wpa_dbg(wpa_s, MSG_DEBUG,
8771 "P2P CSA: Failed to select new frequency for GO");
8772 return -1;
8773 }
8774
8775 if (current_ssid->frequency == params.freq) {
8776 wpa_dbg(wpa_s, MSG_DEBUG,
8777 "P2P CSA: Selected same frequency - not moving GO");
8778 return 0;
8779 }
8780
8781 conf = hostapd_config_defaults();
8782 if (!conf) {
8783 wpa_dbg(wpa_s, MSG_DEBUG,
8784 "P2P CSA: Failed to allocate default config");
8785 return -1;
8786 }
8787
8788 current_ssid->frequency = params.freq;
8789 if (wpa_supplicant_conf_ap_ht(wpa_s, current_ssid, conf)) {
8790 wpa_dbg(wpa_s, MSG_DEBUG,
8791 "P2P CSA: Failed to create new GO config");
8792 ret = -1;
8793 goto out;
8794 }
8795
8796 if (conf->hw_mode != wpa_s->ap_iface->current_mode->mode) {
8797 wpa_dbg(wpa_s, MSG_DEBUG,
8798 "P2P CSA: CSA to a different band is not supported");
8799 ret = -1;
8800 goto out;
8801 }
8802
8803 os_memset(&csa_settings, 0, sizeof(csa_settings));
8804 csa_settings.cs_count = P2P_GO_CSA_COUNT;
8805 csa_settings.block_tx = P2P_GO_CSA_BLOCK_TX;
8806 csa_settings.freq_params.freq = params.freq;
8807 csa_settings.freq_params.sec_channel_offset = conf->secondary_channel;
8808 csa_settings.freq_params.ht_enabled = conf->ieee80211n;
8809 csa_settings.freq_params.bandwidth = conf->secondary_channel ? 40 : 20;
8810
8811 if (conf->ieee80211ac) {
8812 int freq1 = 0, freq2 = 0;
8813 u8 chan, opclass;
8814
8815 if (ieee80211_freq_to_channel_ext(params.freq,
8816 conf->secondary_channel,
8817 conf->vht_oper_chwidth,
8818 &opclass, &chan) ==
8819 NUM_HOSTAPD_MODES) {
8820 wpa_printf(MSG_ERROR, "P2P CSA: Bad freq");
8821 ret = -1;
8822 goto out;
8823 }
8824
8825 if (conf->vht_oper_centr_freq_seg0_idx)
8826 freq1 = ieee80211_chan_to_freq(
8827 NULL, opclass,
8828 conf->vht_oper_centr_freq_seg0_idx);
8829
8830 if (conf->vht_oper_centr_freq_seg1_idx)
8831 freq2 = ieee80211_chan_to_freq(
8832 NULL, opclass,
8833 conf->vht_oper_centr_freq_seg1_idx);
8834
8835 if (freq1 < 0 || freq2 < 0) {
8836 wpa_dbg(wpa_s, MSG_DEBUG,
8837 "P2P CSA: Selected invalid VHT center freqs");
8838 ret = -1;
8839 goto out;
8840 }
8841
8842 csa_settings.freq_params.vht_enabled = conf->ieee80211ac;
8843 csa_settings.freq_params.center_freq1 = freq1;
8844 csa_settings.freq_params.center_freq2 = freq2;
8845
8846 switch (conf->vht_oper_chwidth) {
8847 case VHT_CHANWIDTH_80MHZ:
8848 case VHT_CHANWIDTH_80P80MHZ:
8849 csa_settings.freq_params.bandwidth = 80;
8850 break;
8851 case VHT_CHANWIDTH_160MHZ:
8852 csa_settings.freq_params.bandwidth = 160;
8853 break;
8854 }
8855 }
8856
8857 ret = ap_switch_channel(wpa_s, &csa_settings);
8858 out:
8859 current_ssid->frequency = old_freq;
8860 hostapd_config_free(conf);
8861 return ret;
8862 }
8863
8864
8865 static void wpas_p2p_move_go_no_csa(struct wpa_supplicant *wpa_s)
8866 {
8867 struct p2p_go_neg_results params;
8868 struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8869
8870 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
8871
8872 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz",
8873 current_ssid->frequency);
8874
8875 /* Stop the AP functionality */
8876 /* TODO: Should do this in a way that does not indicated to possible
8877 * P2P Clients in the group that the group is terminated. */
8878 wpa_supplicant_ap_deinit(wpa_s);
8879
8880 /* Reselect the GO frequency */
8881 if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, NULL)) {
8882 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Failed to reselect freq");
8883 wpas_p2p_group_delete(wpa_s,
8884 P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8885 return;
8886 }
8887 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New freq selected for the GO (%u MHz)",
8888 params.freq);
8889
8890 if (params.freq &&
8891 !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
8892 wpa_printf(MSG_DEBUG,
8893 "P2P: Selected freq (%u MHz) is not valid for P2P",
8894 params.freq);
8895 wpas_p2p_group_delete(wpa_s,
8896 P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8897 return;
8898 }
8899
8900 /* Update the frequency */
8901 current_ssid->frequency = params.freq;
8902 wpa_s->connect_without_scan = current_ssid;
8903 wpa_s->reassociate = 1;
8904 wpa_s->disconnected = 0;
8905 wpa_supplicant_req_scan(wpa_s, 0, 0);
8906 }
8907
8908
8909 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx)
8910 {
8911 struct wpa_supplicant *wpa_s = eloop_ctx;
8912
8913 if (!wpa_s->ap_iface || !wpa_s->current_ssid)
8914 return;
8915
8916 wpas_p2p_go_update_common_freqs(wpa_s);
8917
8918 /* Do not move GO in the middle of a CSA */
8919 if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
8920 wpa_printf(MSG_DEBUG,
8921 "P2P: CSA is in progress - not moving GO");
8922 return;
8923 }
8924
8925 /*
8926 * First, try a channel switch flow. If it is not supported or fails,
8927 * take down the GO and bring it up again.
8928 */
8929 if (wpas_p2p_move_go_csa(wpa_s) < 0)
8930 wpas_p2p_move_go_no_csa(wpa_s);
8931 }
8932
8933
8934 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx)
8935 {
8936 struct wpa_supplicant *wpa_s = eloop_ctx;
8937 struct wpa_used_freq_data *freqs = NULL;
8938 unsigned int num = wpa_s->num_multichan_concurrent;
8939
8940 freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
8941 if (!freqs)
8942 return;
8943
8944 num = get_shared_radio_freqs_data(wpa_s, freqs, num);
8945
8946 /* Previous attempt to move a GO was not possible -- try again. */
8947 wpas_p2p_consider_moving_gos(wpa_s, freqs, num,
8948 WPAS_P2P_CHANNEL_UPDATE_ANY);
8949
8950 os_free(freqs);
8951 }
8952
8953
8954 /*
8955 * Consider moving a GO from its currently used frequency:
8956 * 1. It is possible that due to regulatory consideration the frequency
8957 * can no longer be used and there is a need to evacuate the GO.
8958 * 2. It is possible that due to MCC considerations, it would be preferable
8959 * to move the GO to a channel that is currently used by some other
8960 * station interface.
8961 *
8962 * In case a frequency that became invalid is once again valid, cancel a
8963 * previously initiated GO frequency change.
8964 */
8965 static void wpas_p2p_consider_moving_one_go(struct wpa_supplicant *wpa_s,
8966 struct wpa_used_freq_data *freqs,
8967 unsigned int num)
8968 {
8969 unsigned int i, invalid_freq = 0, policy_move = 0, flags = 0;
8970 unsigned int timeout;
8971 int freq;
8972
8973 wpas_p2p_go_update_common_freqs(wpa_s);
8974
8975 freq = wpa_s->current_ssid->frequency;
8976 for (i = 0, invalid_freq = 0; i < num; i++) {
8977 if (freqs[i].freq == freq) {
8978 flags = freqs[i].flags;
8979
8980 /* The channel is invalid, must change it */
8981 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
8982 wpa_dbg(wpa_s, MSG_DEBUG,
8983 "P2P: Freq=%d MHz no longer valid for GO",
8984 freq);
8985 invalid_freq = 1;
8986 }
8987 } else if (freqs[i].flags == 0) {
8988 /* Freq is not used by any other station interface */
8989 continue;
8990 } else if (!p2p_supported_freq(wpa_s->global->p2p,
8991 freqs[i].freq)) {
8992 /* Freq is not valid for P2P use cases */
8993 continue;
8994 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
8995 P2P_GO_FREQ_MOVE_SCM) {
8996 policy_move = 1;
8997 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
8998 P2P_GO_FREQ_MOVE_SCM_PEER_SUPPORTS &&
8999 wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9000 policy_move = 1;
9001 } else if ((wpa_s->conf->p2p_go_freq_change_policy ==
9002 P2P_GO_FREQ_MOVE_SCM_ECSA) &&
9003 wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9004 if (!p2p_get_group_num_members(wpa_s->p2p_group)) {
9005 policy_move = 1;
9006 } else if ((wpa_s->drv_flags &
9007 WPA_DRIVER_FLAGS_AP_CSA) &&
9008 wpas_p2p_go_clients_support_ecsa(wpa_s)) {
9009 u8 chan;
9010
9011 /*
9012 * We do not support CSA between bands, so move
9013 * GO only within the same band.
9014 */
9015 if (wpa_s->ap_iface->current_mode->mode ==
9016 ieee80211_freq_to_chan(freqs[i].freq,
9017 &chan))
9018 policy_move = 1;
9019 }
9020 }
9021 }
9022
9023 wpa_dbg(wpa_s, MSG_DEBUG,
9024 "P2P: GO move: invalid_freq=%u, policy_move=%u, flags=0x%X",
9025 invalid_freq, policy_move, flags);
9026
9027 /*
9028 * The channel is valid, or we are going to have a policy move, so
9029 * cancel timeout.
9030 */
9031 if (!invalid_freq || policy_move) {
9032 wpa_dbg(wpa_s, MSG_DEBUG,
9033 "P2P: Cancel a GO move from freq=%d MHz", freq);
9034 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9035
9036 if (wpas_p2p_in_progress(wpa_s)) {
9037 wpa_dbg(wpa_s, MSG_DEBUG,
9038 "P2P: GO move: policy CS is not allowed - setting timeout to re-consider GO move");
9039 eloop_cancel_timeout(wpas_p2p_reconsider_moving_go,
9040 wpa_s, NULL);
9041 eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9042 wpas_p2p_reconsider_moving_go,
9043 wpa_s, NULL);
9044 return;
9045 }
9046 }
9047
9048 if (!invalid_freq && (!policy_move || flags != 0)) {
9049 wpa_dbg(wpa_s, MSG_DEBUG,
9050 "P2P: Not initiating a GO frequency change");
9051 return;
9052 }
9053
9054 /*
9055 * Do not consider moving GO if it is in the middle of a CSA. When the
9056 * CSA is finished this flow should be retriggered.
9057 */
9058 if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
9059 wpa_dbg(wpa_s, MSG_DEBUG,
9060 "P2P: Not initiating a GO frequency change - CSA is in progress");
9061 return;
9062 }
9063
9064 if (invalid_freq && !wpas_p2p_disallowed_freq(wpa_s->global, freq))
9065 timeout = P2P_GO_FREQ_CHANGE_TIME;
9066 else
9067 timeout = 0;
9068
9069 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz in %d secs",
9070 freq, timeout);
9071 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9072 eloop_register_timeout(timeout, 0, wpas_p2p_move_go, wpa_s, NULL);
9073 }
9074
9075
9076 static void wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
9077 struct wpa_used_freq_data *freqs,
9078 unsigned int num,
9079 enum wpas_p2p_channel_update_trig trig)
9080 {
9081 struct wpa_supplicant *ifs;
9082
9083 eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, ELOOP_ALL_CTX,
9084 NULL);
9085
9086 /*
9087 * Travers all the radio interfaces, and for each GO interface, check
9088 * if there is a need to move the GO from the frequency it is using,
9089 * or in case the frequency is valid again, cancel the evacuation flow.
9090 */
9091 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
9092 radio_list) {
9093 if (ifs->current_ssid == NULL ||
9094 ifs->current_ssid->mode != WPAS_MODE_P2P_GO)
9095 continue;
9096
9097 /*
9098 * The GO was just started or completed channel switch, no need
9099 * to move it.
9100 */
9101 if (wpa_s == ifs &&
9102 (trig == WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE ||
9103 trig == WPAS_P2P_CHANNEL_UPDATE_CS)) {
9104 wpa_dbg(wpa_s, MSG_DEBUG,
9105 "P2P: GO move - schedule re-consideration");
9106 eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9107 wpas_p2p_reconsider_moving_go,
9108 wpa_s, NULL);
9109 continue;
9110 }
9111
9112 wpas_p2p_consider_moving_one_go(ifs, freqs, num);
9113 }
9114 }
9115
9116
9117 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
9118 {
9119 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
9120 return;
9121
9122 wpas_p2p_update_channel_list(wpa_s,
9123 WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE);
9124 }
9125
9126
9127 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
9128 {
9129 if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
9130 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
9131 "the management interface is being removed");
9132 wpas_p2p_deinit_global(wpa_s->global);
9133 }
9134 }
9135
9136
9137 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
9138 {
9139 if (wpa_s->ap_iface->bss)
9140 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
9141 wpas_p2p_group_deinit(wpa_s);
9142 }
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