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[thirdparty/hostap.git] / src / p2p / p2p.c
1 /*
2 * Wi-Fi Direct - P2P module
3 * Copyright (c) 2009-2010, Atheros Communications
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9 #include "includes.h"
10
11 #include "common.h"
12 #include "eloop.h"
13 #include "common/ieee802_11_defs.h"
14 #include "common/ieee802_11_common.h"
15 #include "wps/wps_i.h"
16 #include "p2p_i.h"
17 #include "p2p.h"
18
19
20 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx);
21 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev);
22 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
23 const u8 *sa, const u8 *data, size_t len,
24 int rx_freq);
25 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
26 const u8 *sa, const u8 *data,
27 size_t len);
28 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx);
29 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx);
30
31
32 /*
33 * p2p_scan recovery timeout
34 *
35 * Many drivers are using 30 second timeout on scan results. Allow a bit larger
36 * timeout for this to avoid hitting P2P timeout unnecessarily.
37 */
38 #define P2P_SCAN_TIMEOUT 35
39
40 /**
41 * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer
42 * entries will be removed
43 */
44 #define P2P_PEER_EXPIRATION_AGE 300
45
46 #define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2)
47
48 static void p2p_expire_peers(struct p2p_data *p2p)
49 {
50 struct p2p_device *dev, *n;
51 struct os_reltime now;
52 size_t i;
53
54 os_get_reltime(&now);
55 dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
56 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec)
57 continue;
58
59 if (p2p->cfg->go_connected &&
60 p2p->cfg->go_connected(p2p->cfg->cb_ctx,
61 dev->info.p2p_device_addr)) {
62 /*
63 * We are connected as a client to a group in which the
64 * peer is the GO, so do not expire the peer entry.
65 */
66 os_get_reltime(&dev->last_seen);
67 continue;
68 }
69
70 for (i = 0; i < p2p->num_groups; i++) {
71 if (p2p_group_is_client_connected(
72 p2p->groups[i], dev->info.p2p_device_addr))
73 break;
74 }
75 if (i < p2p->num_groups) {
76 /*
77 * The peer is connected as a client in a group where
78 * we are the GO, so do not expire the peer entry.
79 */
80 os_get_reltime(&dev->last_seen);
81 continue;
82 }
83
84 p2p_dbg(p2p, "Expiring old peer entry " MACSTR,
85 MAC2STR(dev->info.p2p_device_addr));
86 dl_list_del(&dev->list);
87 p2p_device_free(p2p, dev);
88 }
89 }
90
91
92 static void p2p_expiration_timeout(void *eloop_ctx, void *timeout_ctx)
93 {
94 struct p2p_data *p2p = eloop_ctx;
95 p2p_expire_peers(p2p);
96 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
97 p2p_expiration_timeout, p2p, NULL);
98 }
99
100
101 static const char * p2p_state_txt(int state)
102 {
103 switch (state) {
104 case P2P_IDLE:
105 return "IDLE";
106 case P2P_SEARCH:
107 return "SEARCH";
108 case P2P_CONNECT:
109 return "CONNECT";
110 case P2P_CONNECT_LISTEN:
111 return "CONNECT_LISTEN";
112 case P2P_GO_NEG:
113 return "GO_NEG";
114 case P2P_LISTEN_ONLY:
115 return "LISTEN_ONLY";
116 case P2P_WAIT_PEER_CONNECT:
117 return "WAIT_PEER_CONNECT";
118 case P2P_WAIT_PEER_IDLE:
119 return "WAIT_PEER_IDLE";
120 case P2P_SD_DURING_FIND:
121 return "SD_DURING_FIND";
122 case P2P_PROVISIONING:
123 return "PROVISIONING";
124 case P2P_PD_DURING_FIND:
125 return "PD_DURING_FIND";
126 case P2P_INVITE:
127 return "INVITE";
128 case P2P_INVITE_LISTEN:
129 return "INVITE_LISTEN";
130 case P2P_SEARCH_WHEN_READY:
131 return "SEARCH_WHEN_READY";
132 case P2P_CONTINUE_SEARCH_WHEN_READY:
133 return "CONTINUE_SEARCH_WHEN_READY";
134 default:
135 return "?";
136 }
137 }
138
139
140 const char * p2p_get_state_txt(struct p2p_data *p2p)
141 {
142 return p2p_state_txt(p2p->state);
143 }
144
145
146 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr)
147 {
148 struct p2p_device *dev = NULL;
149
150 if (!addr || !p2p)
151 return 0;
152
153 dev = p2p_get_device(p2p, addr);
154 if (dev)
155 return dev->wps_prov_info;
156 else
157 return 0;
158 }
159
160
161 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr)
162 {
163 struct p2p_device *dev = NULL;
164
165 if (!addr || !p2p)
166 return;
167
168 dev = p2p_get_device(p2p, addr);
169 if (dev)
170 dev->wps_prov_info = 0;
171 }
172
173
174 void p2p_set_state(struct p2p_data *p2p, int new_state)
175 {
176 p2p_dbg(p2p, "State %s -> %s",
177 p2p_state_txt(p2p->state), p2p_state_txt(new_state));
178 p2p->state = new_state;
179 }
180
181
182 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
183 {
184 p2p_dbg(p2p, "Set timeout (state=%s): %u.%06u sec",
185 p2p_state_txt(p2p->state), sec, usec);
186 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
187 eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
188 }
189
190
191 void p2p_clear_timeout(struct p2p_data *p2p)
192 {
193 p2p_dbg(p2p, "Clear timeout (state=%s)", p2p_state_txt(p2p->state));
194 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
195 }
196
197
198 void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
199 int status)
200 {
201 struct p2p_go_neg_results res;
202 p2p_clear_timeout(p2p);
203 p2p_set_state(p2p, P2P_IDLE);
204 if (p2p->go_neg_peer) {
205 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
206 p2p->go_neg_peer->wps_method = WPS_NOT_READY;
207 }
208 p2p->go_neg_peer = NULL;
209
210 os_memset(&res, 0, sizeof(res));
211 res.status = status;
212 if (peer) {
213 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr,
214 ETH_ALEN);
215 os_memcpy(res.peer_interface_addr, peer->intended_addr,
216 ETH_ALEN);
217 }
218 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
219 }
220
221
222 static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc)
223 {
224 unsigned int r, tu;
225 int freq;
226 struct wpabuf *ies;
227
228 p2p_dbg(p2p, "Starting short listen state (state=%s)",
229 p2p_state_txt(p2p->state));
230
231 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
232 if (freq < 0) {
233 p2p_dbg(p2p, "Unknown regulatory class/channel");
234 return;
235 }
236
237 os_get_random((u8 *) &r, sizeof(r));
238 tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
239 p2p->min_disc_int) * 100;
240 if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu)
241 tu = p2p->max_disc_tu;
242 if (!dev_disc && tu < 100)
243 tu = 100; /* Need to wait in non-device discovery use cases */
244 if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen)
245 tu = p2p->cfg->max_listen * 1000 / 1024;
246
247 if (tu == 0) {
248 p2p_dbg(p2p, "Skip listen state since duration was 0 TU");
249 p2p_set_timeout(p2p, 0, 0);
250 return;
251 }
252
253 p2p->pending_listen_freq = freq;
254 p2p->pending_listen_sec = 0;
255 p2p->pending_listen_usec = 1024 * tu;
256
257 ies = p2p_build_probe_resp_ies(p2p);
258 if (ies == NULL)
259 return;
260
261 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
262 ies) < 0) {
263 p2p_dbg(p2p, "Failed to start listen mode");
264 p2p->pending_listen_freq = 0;
265 }
266 wpabuf_free(ies);
267 }
268
269
270 int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
271 {
272 int freq;
273 struct wpabuf *ies;
274
275 p2p_dbg(p2p, "Going to listen(only) state");
276
277 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
278 if (freq < 0) {
279 p2p_dbg(p2p, "Unknown regulatory class/channel");
280 return -1;
281 }
282
283 p2p->pending_listen_freq = freq;
284 p2p->pending_listen_sec = timeout / 1000;
285 p2p->pending_listen_usec = (timeout % 1000) * 1000;
286
287 if (p2p->p2p_scan_running) {
288 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) {
289 p2p_dbg(p2p, "p2p_scan running - connect is already pending - skip listen");
290 return 0;
291 }
292 p2p_dbg(p2p, "p2p_scan running - delay start of listen state");
293 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
294 return 0;
295 }
296
297 ies = p2p_build_probe_resp_ies(p2p);
298 if (ies == NULL)
299 return -1;
300
301 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
302 p2p_dbg(p2p, "Failed to start listen mode");
303 p2p->pending_listen_freq = 0;
304 wpabuf_free(ies);
305 return -1;
306 }
307 wpabuf_free(ies);
308
309 p2p_set_state(p2p, P2P_LISTEN_ONLY);
310
311 return 0;
312 }
313
314
315 static void p2p_device_clear_reported(struct p2p_data *p2p)
316 {
317 struct p2p_device *dev;
318 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list)
319 dev->flags &= ~P2P_DEV_REPORTED;
320 }
321
322
323 /**
324 * p2p_get_device - Fetch a peer entry
325 * @p2p: P2P module context from p2p_init()
326 * @addr: P2P Device Address of the peer
327 * Returns: Pointer to the device entry or %NULL if not found
328 */
329 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
330 {
331 struct p2p_device *dev;
332 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
333 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
334 return dev;
335 }
336 return NULL;
337 }
338
339
340 /**
341 * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
342 * @p2p: P2P module context from p2p_init()
343 * @addr: P2P Interface Address of the peer
344 * Returns: Pointer to the device entry or %NULL if not found
345 */
346 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
347 const u8 *addr)
348 {
349 struct p2p_device *dev;
350 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
351 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
352 return dev;
353 }
354 return NULL;
355 }
356
357
358 /**
359 * p2p_create_device - Create a peer entry
360 * @p2p: P2P module context from p2p_init()
361 * @addr: P2P Device Address of the peer
362 * Returns: Pointer to the device entry or %NULL on failure
363 *
364 * If there is already an entry for the peer, it will be returned instead of
365 * creating a new one.
366 */
367 static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
368 const u8 *addr)
369 {
370 struct p2p_device *dev, *oldest = NULL;
371 size_t count = 0;
372
373 dev = p2p_get_device(p2p, addr);
374 if (dev)
375 return dev;
376
377 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
378 count++;
379 if (oldest == NULL ||
380 os_reltime_before(&dev->last_seen, &oldest->last_seen))
381 oldest = dev;
382 }
383 if (count + 1 > p2p->cfg->max_peers && oldest) {
384 p2p_dbg(p2p, "Remove oldest peer entry to make room for a new peer");
385 dl_list_del(&oldest->list);
386 p2p_device_free(p2p, oldest);
387 }
388
389 dev = os_zalloc(sizeof(*dev));
390 if (dev == NULL)
391 return NULL;
392 dl_list_add(&p2p->devices, &dev->list);
393 os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
394
395 return dev;
396 }
397
398
399 static void p2p_copy_client_info(struct p2p_device *dev,
400 struct p2p_client_info *cli)
401 {
402 os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len);
403 dev->info.device_name[cli->dev_name_len] = '\0';
404 dev->info.dev_capab = cli->dev_capab;
405 dev->info.config_methods = cli->config_methods;
406 os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
407 dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
408 os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
409 dev->info.wps_sec_dev_type_list_len);
410 }
411
412
413 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
414 const u8 *go_interface_addr, int freq,
415 const u8 *gi, size_t gi_len)
416 {
417 struct p2p_group_info info;
418 size_t c;
419 struct p2p_device *dev;
420
421 if (gi == NULL)
422 return 0;
423
424 if (p2p_group_info_parse(gi, gi_len, &info) < 0)
425 return -1;
426
427 /*
428 * Clear old data for this group; if the devices are still in the
429 * group, the information will be restored in the loop following this.
430 */
431 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
432 if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
433 ETH_ALEN) == 0) {
434 os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
435 os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
436 }
437 }
438
439 for (c = 0; c < info.num_clients; c++) {
440 struct p2p_client_info *cli = &info.client[c];
441 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
442 ETH_ALEN) == 0)
443 continue; /* ignore our own entry */
444 dev = p2p_get_device(p2p, cli->p2p_device_addr);
445 if (dev) {
446 if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
447 P2P_DEV_PROBE_REQ_ONLY)) {
448 /*
449 * Update information since we have not
450 * received this directly from the client.
451 */
452 p2p_copy_client_info(dev, cli);
453 } else {
454 /*
455 * Need to update P2P Client Discoverability
456 * flag since it is valid only in P2P Group
457 * Info attribute.
458 */
459 dev->info.dev_capab &=
460 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
461 dev->info.dev_capab |=
462 cli->dev_capab &
463 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
464 }
465 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
466 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
467 }
468 } else {
469 dev = p2p_create_device(p2p, cli->p2p_device_addr);
470 if (dev == NULL)
471 continue;
472 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
473 p2p_copy_client_info(dev, cli);
474 dev->oper_freq = freq;
475 p2p->cfg->dev_found(p2p->cfg->cb_ctx,
476 dev->info.p2p_device_addr,
477 &dev->info, 1);
478 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
479 }
480
481 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
482 ETH_ALEN);
483 os_get_reltime(&dev->last_seen);
484 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
485 os_memcpy(dev->member_in_go_iface, go_interface_addr,
486 ETH_ALEN);
487 }
488
489 return 0;
490 }
491
492
493 static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev,
494 int probe_req, const struct p2p_message *msg)
495 {
496 os_memcpy(dev->info.device_name, msg->device_name,
497 sizeof(dev->info.device_name));
498
499 if (msg->manufacturer &&
500 msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
501 os_memset(dev->info.manufacturer, 0,
502 sizeof(dev->info.manufacturer));
503 os_memcpy(dev->info.manufacturer, msg->manufacturer,
504 msg->manufacturer_len);
505 }
506
507 if (msg->model_name &&
508 msg->model_name_len < sizeof(dev->info.model_name)) {
509 os_memset(dev->info.model_name, 0,
510 sizeof(dev->info.model_name));
511 os_memcpy(dev->info.model_name, msg->model_name,
512 msg->model_name_len);
513 }
514
515 if (msg->model_number &&
516 msg->model_number_len < sizeof(dev->info.model_number)) {
517 os_memset(dev->info.model_number, 0,
518 sizeof(dev->info.model_number));
519 os_memcpy(dev->info.model_number, msg->model_number,
520 msg->model_number_len);
521 }
522
523 if (msg->serial_number &&
524 msg->serial_number_len < sizeof(dev->info.serial_number)) {
525 os_memset(dev->info.serial_number, 0,
526 sizeof(dev->info.serial_number));
527 os_memcpy(dev->info.serial_number, msg->serial_number,
528 msg->serial_number_len);
529 }
530
531 if (msg->pri_dev_type)
532 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
533 sizeof(dev->info.pri_dev_type));
534 else if (msg->wps_pri_dev_type)
535 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
536 sizeof(dev->info.pri_dev_type));
537
538 if (msg->wps_sec_dev_type_list) {
539 os_memcpy(dev->info.wps_sec_dev_type_list,
540 msg->wps_sec_dev_type_list,
541 msg->wps_sec_dev_type_list_len);
542 dev->info.wps_sec_dev_type_list_len =
543 msg->wps_sec_dev_type_list_len;
544 }
545
546 if (msg->capability) {
547 /*
548 * P2P Client Discoverability bit is reserved in all frames
549 * that use this function, so do not change its value here.
550 */
551 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
552 dev->info.dev_capab |= msg->capability[0] &
553 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
554 dev->info.group_capab = msg->capability[1];
555 }
556
557 if (msg->ext_listen_timing) {
558 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
559 dev->ext_listen_interval =
560 WPA_GET_LE16(msg->ext_listen_timing + 2);
561 }
562
563 if (!probe_req) {
564 u16 new_config_methods;
565 new_config_methods = msg->config_methods ?
566 msg->config_methods : msg->wps_config_methods;
567 if (new_config_methods &&
568 dev->info.config_methods != new_config_methods) {
569 p2p_dbg(p2p, "Update peer " MACSTR
570 " config_methods 0x%x -> 0x%x",
571 MAC2STR(dev->info.p2p_device_addr),
572 dev->info.config_methods,
573 new_config_methods);
574 dev->info.config_methods = new_config_methods;
575 }
576 }
577 }
578
579
580 /**
581 * p2p_add_device - Add peer entries based on scan results or P2P frames
582 * @p2p: P2P module context from p2p_init()
583 * @addr: Source address of Beacon or Probe Response frame (may be either
584 * P2P Device Address or P2P Interface Address)
585 * @level: Signal level (signal strength of the received frame from the peer)
586 * @freq: Frequency on which the Beacon or Probe Response frame was received
587 * @rx_time: Time when the result was received
588 * @ies: IEs from the Beacon or Probe Response frame
589 * @ies_len: Length of ies buffer in octets
590 * @scan_res: Whether this was based on scan results
591 * Returns: 0 on success, -1 on failure
592 *
593 * If the scan result is for a GO, the clients in the group will also be added
594 * to the peer table. This function can also be used with some other frames
595 * like Provision Discovery Request that contains P2P Capability and P2P Device
596 * Info attributes.
597 */
598 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
599 struct os_reltime *rx_time, int level, const u8 *ies,
600 size_t ies_len, int scan_res)
601 {
602 struct p2p_device *dev;
603 struct p2p_message msg;
604 const u8 *p2p_dev_addr;
605 int i;
606 struct os_reltime time_now;
607
608 os_memset(&msg, 0, sizeof(msg));
609 if (p2p_parse_ies(ies, ies_len, &msg)) {
610 p2p_dbg(p2p, "Failed to parse P2P IE for a device entry");
611 p2p_parse_free(&msg);
612 return -1;
613 }
614
615 if (msg.p2p_device_addr)
616 p2p_dev_addr = msg.p2p_device_addr;
617 else if (msg.device_id)
618 p2p_dev_addr = msg.device_id;
619 else {
620 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
621 p2p_parse_free(&msg);
622 return -1;
623 }
624
625 if (!is_zero_ether_addr(p2p->peer_filter) &&
626 os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
627 p2p_dbg(p2p, "Do not add peer filter for " MACSTR
628 " due to peer filter", MAC2STR(p2p_dev_addr));
629 p2p_parse_free(&msg);
630 return 0;
631 }
632
633 dev = p2p_create_device(p2p, p2p_dev_addr);
634 if (dev == NULL) {
635 p2p_parse_free(&msg);
636 return -1;
637 }
638
639 if (rx_time == NULL) {
640 os_get_reltime(&time_now);
641 rx_time = &time_now;
642 }
643
644 /*
645 * Update the device entry only if the new peer
646 * entry is newer than the one previously stored.
647 */
648 if (dev->last_seen.sec > 0 &&
649 os_reltime_before(rx_time, &dev->last_seen)) {
650 p2p_dbg(p2p, "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u)",
651 (unsigned int) rx_time->sec,
652 (unsigned int) rx_time->usec,
653 (unsigned int) dev->last_seen.sec,
654 (unsigned int) dev->last_seen.usec);
655 p2p_parse_free(&msg);
656 return -1;
657 }
658
659 os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
660
661 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
662
663 if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
664 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
665 if (msg.ssid &&
666 (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
667 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
668 != 0)) {
669 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
670 dev->oper_ssid_len = msg.ssid[1];
671 }
672
673 if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
674 *msg.ds_params >= 1 && *msg.ds_params <= 14) {
675 int ds_freq;
676 if (*msg.ds_params == 14)
677 ds_freq = 2484;
678 else
679 ds_freq = 2407 + *msg.ds_params * 5;
680 if (freq != ds_freq) {
681 p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz",
682 freq, ds_freq);
683 freq = ds_freq;
684 }
685 }
686
687 if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
688 p2p_dbg(p2p, "Update Listen frequency based on scan results ("
689 MACSTR " %d -> %d MHz (DS param %d)",
690 MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
691 freq, msg.ds_params ? *msg.ds_params : -1);
692 }
693 if (scan_res) {
694 dev->listen_freq = freq;
695 if (msg.group_info)
696 dev->oper_freq = freq;
697 }
698 dev->info.level = level;
699
700 p2p_copy_wps_info(p2p, dev, 0, &msg);
701
702 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
703 wpabuf_free(dev->info.wps_vendor_ext[i]);
704 dev->info.wps_vendor_ext[i] = NULL;
705 }
706
707 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
708 if (msg.wps_vendor_ext[i] == NULL)
709 break;
710 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
711 msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
712 if (dev->info.wps_vendor_ext[i] == NULL)
713 break;
714 }
715
716 if (msg.wfd_subelems) {
717 wpabuf_free(dev->info.wfd_subelems);
718 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
719 }
720
721 if (scan_res) {
722 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
723 msg.group_info, msg.group_info_len);
724 }
725
726 p2p_parse_free(&msg);
727
728 if (p2p_pending_sd_req(p2p, dev))
729 dev->flags |= P2P_DEV_SD_SCHEDULE;
730
731 if (dev->flags & P2P_DEV_REPORTED)
732 return 0;
733
734 p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)",
735 freq, (unsigned int) rx_time->sec,
736 (unsigned int) rx_time->usec);
737 if (dev->flags & P2P_DEV_USER_REJECTED) {
738 p2p_dbg(p2p, "Do not report rejected device");
739 return 0;
740 }
741
742 if (dev->info.config_methods == 0 &&
743 (freq == 2412 || freq == 2437 || freq == 2462)) {
744 /*
745 * If we have only seen a Beacon frame from a GO, we do not yet
746 * know what WPS config methods it supports. Since some
747 * applications use config_methods value from P2P-DEVICE-FOUND
748 * events, postpone reporting this peer until we've fully
749 * discovered its capabilities.
750 *
751 * At least for now, do this only if the peer was detected on
752 * one of the social channels since that peer can be easily be
753 * found again and there are no limitations of having to use
754 * passive scan on this channels, so this can be done through
755 * Probe Response frame that includes the config_methods
756 * information.
757 */
758 p2p_dbg(p2p, "Do not report peer " MACSTR
759 " with unknown config methods", MAC2STR(addr));
760 return 0;
761 }
762
763 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
764 !(dev->flags & P2P_DEV_REPORTED_ONCE));
765 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
766
767 return 0;
768 }
769
770
771 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
772 {
773 int i;
774
775 if (p2p->go_neg_peer == dev) {
776 /*
777 * If GO Negotiation is in progress, report that it has failed.
778 */
779 p2p_go_neg_failed(p2p, dev, -1);
780 p2p->go_neg_peer = NULL;
781 }
782 if (p2p->invite_peer == dev)
783 p2p->invite_peer = NULL;
784 if (p2p->sd_peer == dev)
785 p2p->sd_peer = NULL;
786 if (p2p->pending_client_disc_go == dev)
787 p2p->pending_client_disc_go = NULL;
788
789 /* dev_lost() device, but only if it was previously dev_found() */
790 if (dev->flags & P2P_DEV_REPORTED_ONCE)
791 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
792 dev->info.p2p_device_addr);
793
794 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
795 wpabuf_free(dev->info.wps_vendor_ext[i]);
796 dev->info.wps_vendor_ext[i] = NULL;
797 }
798
799 wpabuf_free(dev->info.wfd_subelems);
800
801 os_free(dev);
802 }
803
804
805 static int p2p_get_next_prog_freq(struct p2p_data *p2p)
806 {
807 struct p2p_channels *c;
808 struct p2p_reg_class *cla;
809 size_t cl, ch;
810 int found = 0;
811 u8 reg_class;
812 u8 channel;
813 int freq;
814
815 c = &p2p->cfg->channels;
816 for (cl = 0; cl < c->reg_classes; cl++) {
817 cla = &c->reg_class[cl];
818 if (cla->reg_class != p2p->last_prog_scan_class)
819 continue;
820 for (ch = 0; ch < cla->channels; ch++) {
821 if (cla->channel[ch] == p2p->last_prog_scan_chan) {
822 found = 1;
823 break;
824 }
825 }
826 if (found)
827 break;
828 }
829
830 if (!found) {
831 /* Start from beginning */
832 reg_class = c->reg_class[0].reg_class;
833 channel = c->reg_class[0].channel[0];
834 } else {
835 /* Pick the next channel */
836 ch++;
837 if (ch == cla->channels) {
838 cl++;
839 if (cl == c->reg_classes)
840 cl = 0;
841 ch = 0;
842 }
843 reg_class = c->reg_class[cl].reg_class;
844 channel = c->reg_class[cl].channel[ch];
845 }
846
847 freq = p2p_channel_to_freq(reg_class, channel);
848 p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz",
849 reg_class, channel, freq);
850 p2p->last_prog_scan_class = reg_class;
851 p2p->last_prog_scan_chan = channel;
852
853 if (freq == 2412 || freq == 2437 || freq == 2462)
854 return 0; /* No need to add social channels */
855 return freq;
856 }
857
858
859 static void p2p_search(struct p2p_data *p2p)
860 {
861 int freq = 0;
862 enum p2p_scan_type type;
863 u16 pw_id = DEV_PW_DEFAULT;
864 int res;
865
866 if (p2p->drv_in_listen) {
867 p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing");
868 return;
869 }
870 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
871
872 if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
873 (freq = p2p_get_next_prog_freq(p2p)) > 0) {
874 type = P2P_SCAN_SOCIAL_PLUS_ONE;
875 p2p_dbg(p2p, "Starting search (+ freq %u)", freq);
876 } else {
877 type = P2P_SCAN_SOCIAL;
878 p2p_dbg(p2p, "Starting search");
879 }
880
881 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
882 p2p->num_req_dev_types, p2p->req_dev_types,
883 p2p->find_dev_id, pw_id);
884 if (res < 0) {
885 p2p_dbg(p2p, "Scan request failed");
886 p2p_continue_find(p2p);
887 } else if (res == 1) {
888 p2p_dbg(p2p, "Could not start p2p_scan at this point - will try again after previous scan completes");
889 p2p_set_state(p2p, P2P_CONTINUE_SEARCH_WHEN_READY);
890 } else {
891 p2p_dbg(p2p, "Running p2p_scan");
892 p2p->p2p_scan_running = 1;
893 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
894 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
895 p2p, NULL);
896 }
897 }
898
899
900 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
901 {
902 struct p2p_data *p2p = eloop_ctx;
903 p2p_dbg(p2p, "Find timeout -> stop");
904 p2p_stop_find(p2p);
905 }
906
907
908 static int p2p_run_after_scan(struct p2p_data *p2p)
909 {
910 struct p2p_device *dev;
911 enum p2p_after_scan op;
912
913 if (p2p->after_scan_tx) {
914 p2p->after_scan_tx_in_progress = 1;
915 p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion");
916 p2p->cfg->send_action(p2p->cfg->cb_ctx,
917 p2p->after_scan_tx->freq,
918 p2p->after_scan_tx->dst,
919 p2p->after_scan_tx->src,
920 p2p->after_scan_tx->bssid,
921 (u8 *) (p2p->after_scan_tx + 1),
922 p2p->after_scan_tx->len,
923 p2p->after_scan_tx->wait_time);
924 os_free(p2p->after_scan_tx);
925 p2p->after_scan_tx = NULL;
926 return 1;
927 }
928
929 op = p2p->start_after_scan;
930 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
931 switch (op) {
932 case P2P_AFTER_SCAN_NOTHING:
933 break;
934 case P2P_AFTER_SCAN_LISTEN:
935 p2p_dbg(p2p, "Start previously requested Listen state");
936 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
937 p2p->pending_listen_usec / 1000);
938 return 1;
939 case P2P_AFTER_SCAN_CONNECT:
940 p2p_dbg(p2p, "Start previously requested connect with " MACSTR,
941 MAC2STR(p2p->after_scan_peer));
942 dev = p2p_get_device(p2p, p2p->after_scan_peer);
943 if (dev == NULL) {
944 p2p_dbg(p2p, "Peer not known anymore");
945 break;
946 }
947 p2p_connect_send(p2p, dev);
948 return 1;
949 }
950
951 return 0;
952 }
953
954
955 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
956 {
957 struct p2p_data *p2p = eloop_ctx;
958 int running;
959 p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running);
960 running = p2p->p2p_scan_running;
961 /* Make sure we recover from missed scan results callback */
962 p2p->p2p_scan_running = 0;
963
964 if (running)
965 p2p_run_after_scan(p2p);
966 }
967
968
969 static void p2p_free_req_dev_types(struct p2p_data *p2p)
970 {
971 p2p->num_req_dev_types = 0;
972 os_free(p2p->req_dev_types);
973 p2p->req_dev_types = NULL;
974 }
975
976
977 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
978 enum p2p_discovery_type type,
979 unsigned int num_req_dev_types, const u8 *req_dev_types,
980 const u8 *dev_id, unsigned int search_delay)
981 {
982 int res;
983
984 p2p_dbg(p2p, "Starting find (type=%d)", type);
985 os_get_reltime(&p2p->find_start);
986 if (p2p->p2p_scan_running) {
987 p2p_dbg(p2p, "p2p_scan is already running");
988 }
989
990 p2p_free_req_dev_types(p2p);
991 if (req_dev_types && num_req_dev_types) {
992 p2p->req_dev_types = os_malloc(num_req_dev_types *
993 WPS_DEV_TYPE_LEN);
994 if (p2p->req_dev_types == NULL)
995 return -1;
996 os_memcpy(p2p->req_dev_types, req_dev_types,
997 num_req_dev_types * WPS_DEV_TYPE_LEN);
998 p2p->num_req_dev_types = num_req_dev_types;
999 }
1000
1001 if (dev_id) {
1002 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
1003 p2p->find_dev_id = p2p->find_dev_id_buf;
1004 } else
1005 p2p->find_dev_id = NULL;
1006
1007 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1008 p2p_clear_timeout(p2p);
1009 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1010 p2p->find_type = type;
1011 p2p_device_clear_reported(p2p);
1012 p2p_set_state(p2p, P2P_SEARCH);
1013 p2p->search_delay = search_delay;
1014 p2p->in_search_delay = 0;
1015 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1016 p2p->last_p2p_find_timeout = timeout;
1017 if (timeout)
1018 eloop_register_timeout(timeout, 0, p2p_find_timeout,
1019 p2p, NULL);
1020 switch (type) {
1021 case P2P_FIND_START_WITH_FULL:
1022 case P2P_FIND_PROGRESSIVE:
1023 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1024 p2p->num_req_dev_types,
1025 p2p->req_dev_types, dev_id,
1026 DEV_PW_DEFAULT);
1027 break;
1028 case P2P_FIND_ONLY_SOCIAL:
1029 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1030 p2p->num_req_dev_types,
1031 p2p->req_dev_types, dev_id,
1032 DEV_PW_DEFAULT);
1033 break;
1034 default:
1035 return -1;
1036 }
1037
1038 if (res == 0) {
1039 p2p_dbg(p2p, "Running p2p_scan");
1040 p2p->p2p_scan_running = 1;
1041 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1042 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1043 p2p, NULL);
1044 } else if (res == 1) {
1045 p2p_dbg(p2p, "Could not start p2p_scan at this point - will try again after previous scan completes");
1046 res = 0;
1047 p2p_set_state(p2p, P2P_SEARCH_WHEN_READY);
1048 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1049 } else {
1050 p2p_dbg(p2p, "Failed to start p2p_scan");
1051 p2p_set_state(p2p, P2P_IDLE);
1052 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1053 }
1054
1055 return res;
1056 }
1057
1058
1059 int p2p_other_scan_completed(struct p2p_data *p2p)
1060 {
1061 if (p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY) {
1062 p2p_set_state(p2p, P2P_SEARCH);
1063 p2p_search(p2p);
1064 return 1;
1065 }
1066 if (p2p->state != P2P_SEARCH_WHEN_READY)
1067 return 0;
1068 p2p_dbg(p2p, "Starting pending P2P find now that previous scan was completed");
1069 if (p2p_find(p2p, p2p->last_p2p_find_timeout, p2p->find_type,
1070 p2p->num_req_dev_types, p2p->req_dev_types,
1071 p2p->find_dev_id, p2p->search_delay) < 0) {
1072 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
1073 return 0;
1074 }
1075 return 1;
1076 }
1077
1078
1079 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1080 {
1081 p2p_dbg(p2p, "Stopping find");
1082 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1083 p2p_clear_timeout(p2p);
1084 if (p2p->state == P2P_SEARCH ||
1085 p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY ||
1086 p2p->state == P2P_SEARCH_WHEN_READY)
1087 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
1088 p2p_set_state(p2p, P2P_IDLE);
1089 p2p_free_req_dev_types(p2p);
1090 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1091 if (p2p->go_neg_peer)
1092 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
1093 p2p->go_neg_peer = NULL;
1094 p2p->sd_peer = NULL;
1095 p2p->invite_peer = NULL;
1096 p2p_stop_listen_for_freq(p2p, freq);
1097 }
1098
1099
1100 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1101 {
1102 if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1103 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response");
1104 return;
1105 }
1106 if (p2p->in_listen) {
1107 p2p->in_listen = 0;
1108 p2p_clear_timeout(p2p);
1109 }
1110 if (p2p->drv_in_listen) {
1111 /*
1112 * The driver may not deliver callback to p2p_listen_end()
1113 * when the operation gets canceled, so clear the internal
1114 * variable that is tracking driver state.
1115 */
1116 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen);
1117 p2p->drv_in_listen = 0;
1118 }
1119 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1120 }
1121
1122
1123 void p2p_stop_listen(struct p2p_data *p2p)
1124 {
1125 if (p2p->state != P2P_LISTEN_ONLY) {
1126 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state.");
1127 return;
1128 }
1129
1130 p2p_stop_listen_for_freq(p2p, 0);
1131 p2p_set_state(p2p, P2P_IDLE);
1132 }
1133
1134
1135 void p2p_stop_find(struct p2p_data *p2p)
1136 {
1137 p2p_stop_find_for_freq(p2p, 0);
1138 }
1139
1140
1141 static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1142 unsigned int force_freq,
1143 unsigned int pref_freq, int go)
1144 {
1145 u8 op_class, op_channel;
1146 unsigned int freq = force_freq ? force_freq : pref_freq;
1147
1148 p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d",
1149 force_freq, pref_freq, go);
1150 if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) {
1151 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq);
1152 return -1;
1153 }
1154
1155 if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) &&
1156 (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class,
1157 op_channel))) {
1158 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P",
1159 freq, op_class, op_channel);
1160 return -1;
1161 }
1162
1163 p2p->op_reg_class = op_class;
1164 p2p->op_channel = op_channel;
1165
1166 if (force_freq) {
1167 p2p->channels.reg_classes = 1;
1168 p2p->channels.reg_class[0].channels = 1;
1169 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1170 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1171 } else {
1172 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1173 sizeof(struct p2p_channels));
1174 }
1175
1176 return 0;
1177 }
1178
1179
1180 static void p2p_prepare_channel_best(struct p2p_data *p2p)
1181 {
1182 u8 op_class, op_channel;
1183 const int op_classes_5ghz[] = { 124, 115, 0 };
1184 const int op_classes_ht40[] = { 126, 127, 116, 117, 0 };
1185 const int op_classes_vht[] = { 128, 0 };
1186
1187 p2p_dbg(p2p, "Prepare channel best");
1188
1189 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1190 p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1191 p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1192 == 0) {
1193 p2p_dbg(p2p, "Select best overall channel as operating channel preference");
1194 p2p->op_reg_class = op_class;
1195 p2p->op_channel = op_channel;
1196 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1197 p2p_supported_freq(p2p, p2p->best_freq_5) &&
1198 p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1199 == 0) {
1200 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
1201 p2p->op_reg_class = op_class;
1202 p2p->op_channel = op_channel;
1203 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1204 p2p_supported_freq(p2p, p2p->best_freq_24) &&
1205 p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1206 &op_channel) == 0) {
1207 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
1208 p2p->op_reg_class = op_class;
1209 p2p->op_channel = op_channel;
1210 } else if (p2p->cfg->num_pref_chan > 0 &&
1211 p2p_channels_includes(&p2p->cfg->channels,
1212 p2p->cfg->pref_chan[0].op_class,
1213 p2p->cfg->pref_chan[0].chan)) {
1214 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference");
1215 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class;
1216 p2p->op_channel = p2p->cfg->pref_chan[0].chan;
1217 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht,
1218 &p2p->op_reg_class, &p2p->op_channel) ==
1219 0) {
1220 p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference",
1221 p2p->op_reg_class, p2p->op_channel);
1222 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40,
1223 &p2p->op_reg_class, &p2p->op_channel) ==
1224 0) {
1225 p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference",
1226 p2p->op_reg_class, p2p->op_channel);
1227 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz,
1228 &p2p->op_reg_class, &p2p->op_channel) ==
1229 0) {
1230 p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference",
1231 p2p->op_reg_class, p2p->op_channel);
1232 } else {
1233 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference");
1234 p2p->op_reg_class = p2p->cfg->op_reg_class;
1235 p2p->op_channel = p2p->cfg->op_channel;
1236 }
1237
1238 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1239 sizeof(struct p2p_channels));
1240 }
1241
1242
1243 /**
1244 * p2p_prepare_channel - Select operating channel for GO Negotiation
1245 * @p2p: P2P module context from p2p_init()
1246 * @dev: Selected peer device
1247 * @force_freq: Forced frequency in MHz or 0 if not forced
1248 * @pref_freq: Preferred frequency in MHz or 0 if no preference
1249 * @go: Whether the local end will be forced to be GO
1250 * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1251 *
1252 * This function is used to do initial operating channel selection for GO
1253 * Negotiation prior to having received peer information. The selected channel
1254 * may be further optimized in p2p_reselect_channel() once the peer information
1255 * is available.
1256 */
1257 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
1258 unsigned int force_freq, unsigned int pref_freq, int go)
1259 {
1260 p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d",
1261 force_freq, pref_freq, go);
1262 if (force_freq || pref_freq) {
1263 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) <
1264 0)
1265 return -1;
1266 } else {
1267 p2p_prepare_channel_best(p2p);
1268 }
1269 p2p_channels_dump(p2p, "prepared channels", &p2p->channels);
1270 if (go)
1271 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq);
1272 else if (!force_freq)
1273 p2p_channels_union(&p2p->channels, &p2p->cfg->cli_channels,
1274 &p2p->channels);
1275 p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels);
1276
1277 p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
1278 p2p->op_reg_class, p2p->op_channel,
1279 force_freq ? " (forced)" : "");
1280
1281 if (force_freq)
1282 dev->flags |= P2P_DEV_FORCE_FREQ;
1283 else
1284 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1285
1286 return 0;
1287 }
1288
1289
1290 static void p2p_set_dev_persistent(struct p2p_device *dev,
1291 int persistent_group)
1292 {
1293 switch (persistent_group) {
1294 case 0:
1295 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1296 P2P_DEV_PREFER_PERSISTENT_RECONN);
1297 break;
1298 case 1:
1299 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1300 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1301 break;
1302 case 2:
1303 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1304 P2P_DEV_PREFER_PERSISTENT_RECONN;
1305 break;
1306 }
1307 }
1308
1309
1310 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1311 enum p2p_wps_method wps_method,
1312 int go_intent, const u8 *own_interface_addr,
1313 unsigned int force_freq, int persistent_group,
1314 const u8 *force_ssid, size_t force_ssid_len,
1315 int pd_before_go_neg, unsigned int pref_freq)
1316 {
1317 struct p2p_device *dev;
1318
1319 p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
1320 " GO Intent=%d Intended Interface Address=" MACSTR
1321 " wps_method=%d persistent_group=%d pd_before_go_neg=%d",
1322 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1323 wps_method, persistent_group, pd_before_go_neg);
1324
1325 dev = p2p_get_device(p2p, peer_addr);
1326 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1327 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
1328 MAC2STR(peer_addr));
1329 return -1;
1330 }
1331
1332 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq,
1333 go_intent == 15) < 0)
1334 return -1;
1335
1336 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1337 if (!(dev->info.dev_capab &
1338 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1339 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1340 " that is in a group and is not discoverable",
1341 MAC2STR(peer_addr));
1342 return -1;
1343 }
1344 if (dev->oper_freq <= 0) {
1345 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1346 " with incomplete information",
1347 MAC2STR(peer_addr));
1348 return -1;
1349 }
1350
1351 /*
1352 * First, try to connect directly. If the peer does not
1353 * acknowledge frames, assume it is sleeping and use device
1354 * discoverability via the GO at that point.
1355 */
1356 }
1357
1358 p2p->ssid_set = 0;
1359 if (force_ssid) {
1360 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1361 force_ssid, force_ssid_len);
1362 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1363 p2p->ssid_len = force_ssid_len;
1364 p2p->ssid_set = 1;
1365 }
1366
1367 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1368 dev->flags &= ~P2P_DEV_USER_REJECTED;
1369 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1370 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1371 if (pd_before_go_neg)
1372 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
1373 else {
1374 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
1375 /*
1376 * Assign dialog token and tie breaker here to use the same
1377 * values in each retry within the same GO Negotiation exchange.
1378 */
1379 dev->dialog_token++;
1380 if (dev->dialog_token == 0)
1381 dev->dialog_token = 1;
1382 dev->tie_breaker = p2p->next_tie_breaker;
1383 p2p->next_tie_breaker = !p2p->next_tie_breaker;
1384 }
1385 dev->connect_reqs = 0;
1386 dev->go_neg_req_sent = 0;
1387 dev->go_state = UNKNOWN_GO;
1388 p2p_set_dev_persistent(dev, persistent_group);
1389 p2p->go_intent = go_intent;
1390 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1391
1392 if (p2p->state != P2P_IDLE)
1393 p2p_stop_find(p2p);
1394
1395 if (p2p->after_scan_tx) {
1396 /*
1397 * We need to drop the pending frame to avoid issues with the
1398 * new GO Negotiation, e.g., when the pending frame was from a
1399 * previous attempt at starting a GO Negotiation.
1400 */
1401 p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion");
1402 os_free(p2p->after_scan_tx);
1403 p2p->after_scan_tx = NULL;
1404 }
1405
1406 dev->wps_method = wps_method;
1407 dev->status = P2P_SC_SUCCESS;
1408
1409 if (p2p->p2p_scan_running) {
1410 p2p_dbg(p2p, "p2p_scan running - delay connect send");
1411 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1412 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1413 return 0;
1414 }
1415 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1416
1417 return p2p_connect_send(p2p, dev);
1418 }
1419
1420
1421 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1422 enum p2p_wps_method wps_method,
1423 int go_intent, const u8 *own_interface_addr,
1424 unsigned int force_freq, int persistent_group,
1425 const u8 *force_ssid, size_t force_ssid_len,
1426 unsigned int pref_freq)
1427 {
1428 struct p2p_device *dev;
1429
1430 p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
1431 " GO Intent=%d Intended Interface Address=" MACSTR
1432 " wps_method=%d persistent_group=%d",
1433 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1434 wps_method, persistent_group);
1435
1436 dev = p2p_get_device(p2p, peer_addr);
1437 if (dev == NULL) {
1438 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
1439 MAC2STR(peer_addr));
1440 return -1;
1441 }
1442
1443 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent ==
1444 15) < 0)
1445 return -1;
1446
1447 p2p->ssid_set = 0;
1448 if (force_ssid) {
1449 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1450 force_ssid, force_ssid_len);
1451 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1452 p2p->ssid_len = force_ssid_len;
1453 p2p->ssid_set = 1;
1454 }
1455
1456 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1457 dev->flags &= ~P2P_DEV_USER_REJECTED;
1458 dev->go_neg_req_sent = 0;
1459 dev->go_state = UNKNOWN_GO;
1460 p2p_set_dev_persistent(dev, persistent_group);
1461 p2p->go_intent = go_intent;
1462 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1463
1464 dev->wps_method = wps_method;
1465 dev->status = P2P_SC_SUCCESS;
1466
1467 return 0;
1468 }
1469
1470
1471 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1472 struct p2p_device *dev, struct p2p_message *msg)
1473 {
1474 os_get_reltime(&dev->last_seen);
1475
1476 p2p_copy_wps_info(p2p, dev, 0, msg);
1477
1478 if (msg->listen_channel) {
1479 int freq;
1480 freq = p2p_channel_to_freq(msg->listen_channel[3],
1481 msg->listen_channel[4]);
1482 if (freq < 0) {
1483 p2p_dbg(p2p, "Unknown peer Listen channel: "
1484 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1485 msg->listen_channel[0],
1486 msg->listen_channel[1],
1487 msg->listen_channel[2],
1488 msg->listen_channel[3],
1489 msg->listen_channel[4]);
1490 } else {
1491 p2p_dbg(p2p, "Update peer " MACSTR
1492 " Listen channel: %u -> %u MHz",
1493 MAC2STR(dev->info.p2p_device_addr),
1494 dev->listen_freq, freq);
1495 dev->listen_freq = freq;
1496 }
1497 }
1498
1499 if (msg->wfd_subelems) {
1500 wpabuf_free(dev->info.wfd_subelems);
1501 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1502 }
1503
1504 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1505 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1506 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
1507 } else {
1508 p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
1509 MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1510 "listen_freq=%d",
1511 MAC2STR(dev->info.p2p_device_addr),
1512 dev->info.dev_capab, dev->info.group_capab,
1513 dev->info.device_name, dev->listen_freq);
1514 }
1515
1516 dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1517
1518 if (dev->flags & P2P_DEV_USER_REJECTED) {
1519 p2p_dbg(p2p, "Do not report rejected device");
1520 return;
1521 }
1522
1523 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1524 !(dev->flags & P2P_DEV_REPORTED_ONCE));
1525 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1526 }
1527
1528
1529 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1530 {
1531 os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1532 p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1533 os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1534 p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1535 *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1536 }
1537
1538
1539 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1540 {
1541 p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1542 p2p_random(params->passphrase, 8);
1543 return 0;
1544 }
1545
1546
1547 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1548 {
1549 struct p2p_go_neg_results res;
1550 int go = peer->go_state == LOCAL_GO;
1551 struct p2p_channels intersection;
1552 int freqs;
1553 size_t i, j;
1554
1555 p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1556 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
1557
1558 os_memset(&res, 0, sizeof(res));
1559 res.role_go = go;
1560 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1561 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1562 res.wps_method = peer->wps_method;
1563 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1564 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1565 res.persistent_group = 2;
1566 else
1567 res.persistent_group = 1;
1568 }
1569
1570 if (go) {
1571 /* Setup AP mode for WPS provisioning */
1572 res.freq = p2p_channel_to_freq(p2p->op_reg_class,
1573 p2p->op_channel);
1574 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1575 res.ssid_len = p2p->ssid_len;
1576 p2p_random(res.passphrase, 8);
1577 } else {
1578 res.freq = peer->oper_freq;
1579 if (p2p->ssid_len) {
1580 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1581 res.ssid_len = p2p->ssid_len;
1582 }
1583 }
1584
1585 p2p_channels_dump(p2p, "own channels", &p2p->channels);
1586 p2p_channels_dump(p2p, "peer channels", &peer->channels);
1587 p2p_channels_intersect(&p2p->channels, &peer->channels,
1588 &intersection);
1589 if (go) {
1590 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq);
1591 p2p_channels_dump(p2p, "intersection after no-GO removal",
1592 &intersection);
1593 }
1594 freqs = 0;
1595 for (i = 0; i < intersection.reg_classes; i++) {
1596 struct p2p_reg_class *c = &intersection.reg_class[i];
1597 if (freqs + 1 == P2P_MAX_CHANNELS)
1598 break;
1599 for (j = 0; j < c->channels; j++) {
1600 int freq;
1601 if (freqs + 1 == P2P_MAX_CHANNELS)
1602 break;
1603 freq = p2p_channel_to_freq(c->reg_class, c->channel[j]);
1604 if (freq < 0)
1605 continue;
1606 res.freq_list[freqs++] = freq;
1607 }
1608 }
1609
1610 res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1611
1612 p2p_clear_timeout(p2p);
1613 p2p->ssid_set = 0;
1614 peer->go_neg_req_sent = 0;
1615 peer->wps_method = WPS_NOT_READY;
1616
1617 p2p_set_state(p2p, P2P_PROVISIONING);
1618 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1619 }
1620
1621
1622 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1623 const u8 *data, size_t len, int rx_freq)
1624 {
1625 p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
1626 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1627
1628 if (len < 1)
1629 return;
1630
1631 switch (data[0]) {
1632 case P2P_GO_NEG_REQ:
1633 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1634 break;
1635 case P2P_GO_NEG_RESP:
1636 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1637 break;
1638 case P2P_GO_NEG_CONF:
1639 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1640 break;
1641 case P2P_INVITATION_REQ:
1642 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1643 rx_freq);
1644 break;
1645 case P2P_INVITATION_RESP:
1646 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
1647 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1648 break;
1649 case P2P_PROV_DISC_REQ:
1650 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1651 break;
1652 case P2P_PROV_DISC_RESP:
1653 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1654 break;
1655 case P2P_DEV_DISC_REQ:
1656 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1657 break;
1658 case P2P_DEV_DISC_RESP:
1659 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1660 break;
1661 default:
1662 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
1663 data[0]);
1664 break;
1665 }
1666 }
1667
1668
1669 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1670 const u8 *sa, const u8 *bssid, const u8 *data,
1671 size_t len, int freq)
1672 {
1673 if (len < 1)
1674 return;
1675
1676 switch (data[0]) {
1677 case WLAN_PA_VENDOR_SPECIFIC:
1678 data++;
1679 len--;
1680 if (len < 3)
1681 return;
1682 if (WPA_GET_BE24(data) != OUI_WFA)
1683 return;
1684
1685 data += 3;
1686 len -= 3;
1687 if (len < 1)
1688 return;
1689
1690 if (*data != P2P_OUI_TYPE)
1691 return;
1692
1693 p2p_rx_p2p_action(p2p, sa, data + 1, len - 1, freq);
1694 break;
1695 case WLAN_PA_GAS_INITIAL_REQ:
1696 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1697 break;
1698 case WLAN_PA_GAS_INITIAL_RESP:
1699 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1700 break;
1701 case WLAN_PA_GAS_COMEBACK_REQ:
1702 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1703 break;
1704 case WLAN_PA_GAS_COMEBACK_RESP:
1705 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1706 break;
1707 }
1708 }
1709
1710
1711 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1712 const u8 *bssid, u8 category,
1713 const u8 *data, size_t len, int freq)
1714 {
1715 if (category == WLAN_ACTION_PUBLIC) {
1716 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1717 return;
1718 }
1719
1720 if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1721 return;
1722
1723 if (len < 4)
1724 return;
1725
1726 if (WPA_GET_BE24(data) != OUI_WFA)
1727 return;
1728 data += 3;
1729 len -= 3;
1730
1731 if (*data != P2P_OUI_TYPE)
1732 return;
1733 data++;
1734 len--;
1735
1736 /* P2P action frame */
1737 p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
1738 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1739
1740 if (len < 1)
1741 return;
1742 switch (data[0]) {
1743 case P2P_NOA:
1744 p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
1745 /* TODO */
1746 break;
1747 case P2P_PRESENCE_REQ:
1748 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1749 break;
1750 case P2P_PRESENCE_RESP:
1751 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1752 break;
1753 case P2P_GO_DISC_REQ:
1754 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1755 break;
1756 default:
1757 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
1758 break;
1759 }
1760 }
1761
1762
1763 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1764 {
1765 struct p2p_data *p2p = eloop_ctx;
1766 if (p2p->go_neg_peer == NULL)
1767 return;
1768 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1769 p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1770 p2p_connect_send(p2p, p2p->go_neg_peer);
1771 }
1772
1773
1774 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1775 {
1776 struct p2p_data *p2p = eloop_ctx;
1777 if (p2p->invite_peer == NULL)
1778 return;
1779 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1780 p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr);
1781 }
1782
1783
1784 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1785 const u8 *ie, size_t ie_len)
1786 {
1787 struct p2p_message msg;
1788 struct p2p_device *dev;
1789
1790 os_memset(&msg, 0, sizeof(msg));
1791 if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1792 {
1793 p2p_parse_free(&msg);
1794 return; /* not a P2P probe */
1795 }
1796
1797 if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
1798 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
1799 != 0) {
1800 /* The Probe Request is not part of P2P Device Discovery. It is
1801 * not known whether the source address of the frame is the P2P
1802 * Device Address or P2P Interface Address. Do not add a new
1803 * peer entry based on this frames.
1804 */
1805 p2p_parse_free(&msg);
1806 return;
1807 }
1808
1809 dev = p2p_get_device(p2p, addr);
1810 if (dev) {
1811 if (dev->country[0] == 0 && msg.listen_channel)
1812 os_memcpy(dev->country, msg.listen_channel, 3);
1813 os_get_reltime(&dev->last_seen);
1814 p2p_parse_free(&msg);
1815 return; /* already known */
1816 }
1817
1818 dev = p2p_create_device(p2p, addr);
1819 if (dev == NULL) {
1820 p2p_parse_free(&msg);
1821 return;
1822 }
1823
1824 os_get_reltime(&dev->last_seen);
1825 dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
1826
1827 if (msg.listen_channel) {
1828 os_memcpy(dev->country, msg.listen_channel, 3);
1829 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
1830 msg.listen_channel[4]);
1831 }
1832
1833 p2p_copy_wps_info(p2p, dev, 1, &msg);
1834
1835 if (msg.wfd_subelems) {
1836 wpabuf_free(dev->info.wfd_subelems);
1837 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
1838 }
1839
1840 p2p_parse_free(&msg);
1841
1842 p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
1843 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
1844 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
1845 dev->info.group_capab, dev->info.device_name,
1846 dev->listen_freq);
1847 }
1848
1849
1850 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
1851 const u8 *addr,
1852 struct p2p_message *msg)
1853 {
1854 struct p2p_device *dev;
1855
1856 dev = p2p_get_device(p2p, addr);
1857 if (dev) {
1858 os_get_reltime(&dev->last_seen);
1859 return dev; /* already known */
1860 }
1861
1862 dev = p2p_create_device(p2p, addr);
1863 if (dev == NULL)
1864 return NULL;
1865
1866 p2p_add_dev_info(p2p, addr, dev, msg);
1867
1868 return dev;
1869 }
1870
1871
1872 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
1873 {
1874 if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
1875 return 1;
1876 if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
1877 WPA_GET_BE32(&req_dev_type[2]) == 0 &&
1878 WPA_GET_BE16(&req_dev_type[6]) == 0)
1879 return 1; /* Category match with wildcard OUI/sub-category */
1880 return 0;
1881 }
1882
1883
1884 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
1885 size_t num_req_dev_type)
1886 {
1887 size_t i;
1888 for (i = 0; i < num_req_dev_type; i++) {
1889 if (dev_type_match(dev_type, req_dev_type[i]))
1890 return 1;
1891 }
1892 return 0;
1893 }
1894
1895
1896 /**
1897 * p2p_match_dev_type - Match local device type with requested type
1898 * @p2p: P2P module context from p2p_init()
1899 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1900 * Returns: 1 on match, 0 on mismatch
1901 *
1902 * This function can be used to match the Requested Device Type attribute in
1903 * WPS IE with the local device types for deciding whether to reply to a Probe
1904 * Request frame.
1905 */
1906 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
1907 {
1908 struct wps_parse_attr attr;
1909 size_t i;
1910
1911 if (wps_parse_msg(wps, &attr))
1912 return 1; /* assume no Requested Device Type attributes */
1913
1914 if (attr.num_req_dev_type == 0)
1915 return 1; /* no Requested Device Type attributes -> match */
1916
1917 if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
1918 attr.num_req_dev_type))
1919 return 1; /* Own Primary Device Type matches */
1920
1921 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++)
1922 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
1923 attr.req_dev_type,
1924 attr.num_req_dev_type))
1925 return 1; /* Own Secondary Device Type matches */
1926
1927 /* No matching device type found */
1928 return 0;
1929 }
1930
1931
1932 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
1933 {
1934 struct wpabuf *buf;
1935 u8 *len;
1936 int pw_id = -1;
1937 size_t extra = 0;
1938
1939 #ifdef CONFIG_WIFI_DISPLAY
1940 if (p2p->wfd_ie_probe_resp)
1941 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
1942 #endif /* CONFIG_WIFI_DISPLAY */
1943
1944 buf = wpabuf_alloc(1000 + extra);
1945 if (buf == NULL)
1946 return NULL;
1947
1948 if (p2p->go_neg_peer) {
1949 /* Advertise immediate availability of WPS credential */
1950 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
1951 }
1952
1953 if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) {
1954 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response");
1955 wpabuf_free(buf);
1956 return NULL;
1957 }
1958
1959 #ifdef CONFIG_WIFI_DISPLAY
1960 if (p2p->wfd_ie_probe_resp)
1961 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
1962 #endif /* CONFIG_WIFI_DISPLAY */
1963
1964 /* P2P IE */
1965 len = p2p_buf_add_ie_hdr(buf);
1966 p2p_buf_add_capability(buf, p2p->dev_capab &
1967 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
1968 if (p2p->ext_listen_interval)
1969 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
1970 p2p->ext_listen_interval);
1971 p2p_buf_add_device_info(buf, p2p, NULL);
1972 p2p_buf_update_ie_hdr(buf, len);
1973
1974 return buf;
1975 }
1976
1977
1978 static enum p2p_probe_req_status
1979 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
1980 const u8 *bssid, const u8 *ie, size_t ie_len)
1981 {
1982 struct ieee802_11_elems elems;
1983 struct wpabuf *buf;
1984 struct ieee80211_mgmt *resp;
1985 struct p2p_message msg;
1986 struct wpabuf *ies;
1987
1988 if (!p2p->in_listen || !p2p->drv_in_listen) {
1989 /* not in Listen state - ignore Probe Request */
1990 return P2P_PREQ_NOT_LISTEN;
1991 }
1992
1993 if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
1994 ParseFailed) {
1995 /* Ignore invalid Probe Request frames */
1996 return P2P_PREQ_MALFORMED;
1997 }
1998
1999 if (elems.p2p == NULL) {
2000 /* not a P2P probe - ignore it */
2001 return P2P_PREQ_NOT_P2P;
2002 }
2003
2004 if (dst && !is_broadcast_ether_addr(dst) &&
2005 os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2006 /* Not sent to the broadcast address or our P2P Device Address
2007 */
2008 return P2P_PREQ_NOT_PROCESSED;
2009 }
2010
2011 if (bssid && !is_broadcast_ether_addr(bssid)) {
2012 /* Not sent to the Wildcard BSSID */
2013 return P2P_PREQ_NOT_PROCESSED;
2014 }
2015
2016 if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2017 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2018 0) {
2019 /* not using P2P Wildcard SSID - ignore */
2020 return P2P_PREQ_NOT_PROCESSED;
2021 }
2022
2023 if (supp_rates_11b_only(&elems)) {
2024 /* Indicates support for 11b rates only */
2025 return P2P_PREQ_NOT_P2P;
2026 }
2027
2028 os_memset(&msg, 0, sizeof(msg));
2029 if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2030 /* Could not parse P2P attributes */
2031 return P2P_PREQ_NOT_P2P;
2032 }
2033
2034 if (msg.device_id &&
2035 os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2036 /* Device ID did not match */
2037 p2p_parse_free(&msg);
2038 return P2P_PREQ_NOT_PROCESSED;
2039 }
2040
2041 /* Check Requested Device Type match */
2042 if (msg.wps_attributes &&
2043 !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2044 /* No match with Requested Device Type */
2045 p2p_parse_free(&msg);
2046 return P2P_PREQ_NOT_PROCESSED;
2047 }
2048 p2p_parse_free(&msg);
2049
2050 if (!p2p->cfg->send_probe_resp) {
2051 /* Response generated elsewhere */
2052 return P2P_PREQ_NOT_PROCESSED;
2053 }
2054
2055 p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
2056
2057 /*
2058 * We do not really have a specific BSS that this frame is advertising,
2059 * so build a frame that has some information in valid format. This is
2060 * really only used for discovery purposes, not to learn exact BSS
2061 * parameters.
2062 */
2063 ies = p2p_build_probe_resp_ies(p2p);
2064 if (ies == NULL)
2065 return P2P_PREQ_NOT_PROCESSED;
2066
2067 buf = wpabuf_alloc(200 + wpabuf_len(ies));
2068 if (buf == NULL) {
2069 wpabuf_free(ies);
2070 return P2P_PREQ_NOT_PROCESSED;
2071 }
2072
2073 resp = NULL;
2074 resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
2075
2076 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2077 (WLAN_FC_STYPE_PROBE_RESP << 4));
2078 os_memcpy(resp->da, addr, ETH_ALEN);
2079 os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2080 os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2081 resp->u.probe_resp.beacon_int = host_to_le16(100);
2082 /* hardware or low-level driver will setup seq_ctrl and timestamp */
2083 resp->u.probe_resp.capab_info =
2084 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2085 WLAN_CAPABILITY_PRIVACY |
2086 WLAN_CAPABILITY_SHORT_SLOT_TIME);
2087
2088 wpabuf_put_u8(buf, WLAN_EID_SSID);
2089 wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2090 wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2091
2092 wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2093 wpabuf_put_u8(buf, 8);
2094 wpabuf_put_u8(buf, (60 / 5) | 0x80);
2095 wpabuf_put_u8(buf, 90 / 5);
2096 wpabuf_put_u8(buf, (120 / 5) | 0x80);
2097 wpabuf_put_u8(buf, 180 / 5);
2098 wpabuf_put_u8(buf, (240 / 5) | 0x80);
2099 wpabuf_put_u8(buf, 360 / 5);
2100 wpabuf_put_u8(buf, 480 / 5);
2101 wpabuf_put_u8(buf, 540 / 5);
2102
2103 wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2104 wpabuf_put_u8(buf, 1);
2105 wpabuf_put_u8(buf, p2p->cfg->channel);
2106
2107 wpabuf_put_buf(buf, ies);
2108 wpabuf_free(ies);
2109
2110 p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
2111
2112 wpabuf_free(buf);
2113
2114 return P2P_PREQ_NOT_PROCESSED;
2115 }
2116
2117
2118 enum p2p_probe_req_status
2119 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2120 const u8 *bssid, const u8 *ie, size_t ie_len)
2121 {
2122 enum p2p_probe_req_status res;
2123
2124 p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2125
2126 res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len);
2127
2128 if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2129 p2p->go_neg_peer &&
2130 os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2131 == 0 &&
2132 !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
2133 /* Received a Probe Request from GO Negotiation peer */
2134 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
2135 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2136 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2137 return P2P_PREQ_PROCESSED;
2138 }
2139
2140 if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2141 p2p->invite_peer &&
2142 os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2143 == 0) {
2144 /* Received a Probe Request from Invite peer */
2145 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
2146 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2147 return P2P_PREQ_PROCESSED;
2148 }
2149
2150 return res;
2151 }
2152
2153
2154 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2155 u8 *buf, size_t len, struct wpabuf *p2p_ie)
2156 {
2157 struct wpabuf *tmp;
2158 u8 *lpos;
2159 size_t tmplen;
2160 int res;
2161 u8 group_capab;
2162
2163 if (p2p_ie == NULL)
2164 return 0; /* WLAN AP is not a P2P manager */
2165
2166 /*
2167 * (Re)Association Request - P2P IE
2168 * P2P Capability attribute (shall be present)
2169 * P2P Interface attribute (present if concurrent device and
2170 * P2P Management is enabled)
2171 */
2172 tmp = wpabuf_alloc(200);
2173 if (tmp == NULL)
2174 return -1;
2175
2176 lpos = p2p_buf_add_ie_hdr(tmp);
2177 group_capab = 0;
2178 if (p2p->num_groups > 0) {
2179 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2180 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2181 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2182 p2p->cross_connect)
2183 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2184 }
2185 p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2186 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2187 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2188 p2p_buf_add_p2p_interface(tmp, p2p);
2189 p2p_buf_update_ie_hdr(tmp, lpos);
2190
2191 tmplen = wpabuf_len(tmp);
2192 if (tmplen > len)
2193 res = -1;
2194 else {
2195 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2196 res = tmplen;
2197 }
2198 wpabuf_free(tmp);
2199
2200 return res;
2201 }
2202
2203
2204 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2205 size_t len, int p2p_group, struct wpabuf *p2p_ie)
2206 {
2207 struct wpabuf *tmp;
2208 u8 *lpos;
2209 struct p2p_device *peer;
2210 size_t tmplen;
2211 int res;
2212 size_t extra = 0;
2213
2214 if (!p2p_group)
2215 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2216
2217 #ifdef CONFIG_WIFI_DISPLAY
2218 if (p2p->wfd_ie_assoc_req)
2219 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2220 #endif /* CONFIG_WIFI_DISPLAY */
2221
2222 /*
2223 * (Re)Association Request - P2P IE
2224 * P2P Capability attribute (shall be present)
2225 * Extended Listen Timing (may be present)
2226 * P2P Device Info attribute (shall be present)
2227 */
2228 tmp = wpabuf_alloc(200 + extra);
2229 if (tmp == NULL)
2230 return -1;
2231
2232 #ifdef CONFIG_WIFI_DISPLAY
2233 if (p2p->wfd_ie_assoc_req)
2234 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2235 #endif /* CONFIG_WIFI_DISPLAY */
2236
2237 peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2238
2239 lpos = p2p_buf_add_ie_hdr(tmp);
2240 p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2241 if (p2p->ext_listen_interval)
2242 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2243 p2p->ext_listen_interval);
2244 p2p_buf_add_device_info(tmp, p2p, peer);
2245 p2p_buf_update_ie_hdr(tmp, lpos);
2246
2247 tmplen = wpabuf_len(tmp);
2248 if (tmplen > len)
2249 res = -1;
2250 else {
2251 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2252 res = tmplen;
2253 }
2254 wpabuf_free(tmp);
2255
2256 return res;
2257 }
2258
2259
2260 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2261 {
2262 struct wpabuf *p2p_ie;
2263 int ret;
2264
2265 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2266 if (p2p_ie == NULL)
2267 return 0;
2268
2269 ret = p2p_attr_text(p2p_ie, buf, end);
2270 wpabuf_free(p2p_ie);
2271 return ret;
2272 }
2273
2274
2275 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2276 {
2277 struct p2p_message msg;
2278
2279 os_memset(&msg, 0, sizeof(msg));
2280 if (p2p_parse_p2p_ie(p2p_ie, &msg))
2281 return -1;
2282
2283 if (msg.p2p_device_addr) {
2284 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2285 return 0;
2286 } else if (msg.device_id) {
2287 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2288 return 0;
2289 }
2290 return -1;
2291 }
2292
2293
2294 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2295 {
2296 struct wpabuf *p2p_ie;
2297 int ret;
2298
2299 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2300 P2P_IE_VENDOR_TYPE);
2301 if (p2p_ie == NULL)
2302 return -1;
2303 ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2304 wpabuf_free(p2p_ie);
2305 return ret;
2306 }
2307
2308
2309 static void p2p_clear_go_neg(struct p2p_data *p2p)
2310 {
2311 p2p->go_neg_peer = NULL;
2312 p2p_clear_timeout(p2p);
2313 p2p_set_state(p2p, P2P_IDLE);
2314 }
2315
2316
2317 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2318 {
2319 if (p2p->go_neg_peer == NULL) {
2320 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
2321 return; /* No pending Group Formation */
2322 }
2323
2324 if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2325 0) {
2326 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2327 MACSTR " (GO Negotiation peer " MACSTR ")",
2328 MAC2STR(mac_addr),
2329 MAC2STR(p2p->go_neg_peer->intended_addr));
2330 return; /* Ignore unexpected peer address */
2331 }
2332
2333 p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
2334 MAC2STR(mac_addr));
2335
2336 p2p_clear_go_neg(p2p);
2337 }
2338
2339
2340 void p2p_group_formation_failed(struct p2p_data *p2p)
2341 {
2342 if (p2p->go_neg_peer == NULL) {
2343 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
2344 return; /* No pending Group Formation */
2345 }
2346
2347 p2p_dbg(p2p, "Group Formation failed with " MACSTR,
2348 MAC2STR(p2p->go_neg_peer->intended_addr));
2349
2350 p2p_clear_go_neg(p2p);
2351 }
2352
2353
2354 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2355 {
2356 struct p2p_data *p2p;
2357
2358 if (cfg->max_peers < 1)
2359 return NULL;
2360
2361 p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2362 if (p2p == NULL)
2363 return NULL;
2364 p2p->cfg = (struct p2p_config *) (p2p + 1);
2365 os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2366 if (cfg->dev_name)
2367 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2368 if (cfg->manufacturer)
2369 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2370 if (cfg->model_name)
2371 p2p->cfg->model_name = os_strdup(cfg->model_name);
2372 if (cfg->model_number)
2373 p2p->cfg->model_number = os_strdup(cfg->model_number);
2374 if (cfg->serial_number)
2375 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2376 if (cfg->pref_chan) {
2377 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2378 sizeof(struct p2p_channel));
2379 if (p2p->cfg->pref_chan) {
2380 os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2381 cfg->num_pref_chan *
2382 sizeof(struct p2p_channel));
2383 } else
2384 p2p->cfg->num_pref_chan = 0;
2385 }
2386
2387 p2p->min_disc_int = 1;
2388 p2p->max_disc_int = 3;
2389 p2p->max_disc_tu = -1;
2390
2391 os_get_random(&p2p->next_tie_breaker, 1);
2392 p2p->next_tie_breaker &= 0x01;
2393 if (cfg->sd_request)
2394 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2395 p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2396 if (cfg->concurrent_operations)
2397 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2398 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2399
2400 dl_list_init(&p2p->devices);
2401
2402 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2403 p2p_expiration_timeout, p2p, NULL);
2404
2405 p2p->go_timeout = 100;
2406 p2p->client_timeout = 20;
2407
2408 p2p_dbg(p2p, "initialized");
2409 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2410 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2411
2412 return p2p;
2413 }
2414
2415
2416 void p2p_deinit(struct p2p_data *p2p)
2417 {
2418 #ifdef CONFIG_WIFI_DISPLAY
2419 wpabuf_free(p2p->wfd_ie_beacon);
2420 wpabuf_free(p2p->wfd_ie_probe_req);
2421 wpabuf_free(p2p->wfd_ie_probe_resp);
2422 wpabuf_free(p2p->wfd_ie_assoc_req);
2423 wpabuf_free(p2p->wfd_ie_invitation);
2424 wpabuf_free(p2p->wfd_ie_prov_disc_req);
2425 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2426 wpabuf_free(p2p->wfd_ie_go_neg);
2427 wpabuf_free(p2p->wfd_dev_info);
2428 wpabuf_free(p2p->wfd_assoc_bssid);
2429 wpabuf_free(p2p->wfd_coupled_sink_info);
2430 #endif /* CONFIG_WIFI_DISPLAY */
2431
2432 eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2433 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2434 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2435 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2436 p2p_flush(p2p);
2437 p2p_free_req_dev_types(p2p);
2438 os_free(p2p->cfg->dev_name);
2439 os_free(p2p->cfg->manufacturer);
2440 os_free(p2p->cfg->model_name);
2441 os_free(p2p->cfg->model_number);
2442 os_free(p2p->cfg->serial_number);
2443 os_free(p2p->cfg->pref_chan);
2444 os_free(p2p->groups);
2445 wpabuf_free(p2p->sd_resp);
2446 os_free(p2p->after_scan_tx);
2447 p2p_remove_wps_vendor_extensions(p2p);
2448 os_free(p2p->no_go_freq.range);
2449 os_free(p2p);
2450 }
2451
2452
2453 void p2p_flush(struct p2p_data *p2p)
2454 {
2455 struct p2p_device *dev, *prev;
2456 p2p_stop_find(p2p);
2457 dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2458 list) {
2459 dl_list_del(&dev->list);
2460 p2p_device_free(p2p, dev);
2461 }
2462 p2p_free_sd_queries(p2p);
2463 os_free(p2p->after_scan_tx);
2464 p2p->after_scan_tx = NULL;
2465 }
2466
2467
2468 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2469 {
2470 struct p2p_device *dev;
2471
2472 dev = p2p_get_device(p2p, addr);
2473 if (dev == NULL)
2474 return -1;
2475
2476 p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
2477
2478 if (p2p->go_neg_peer == dev)
2479 p2p->go_neg_peer = NULL;
2480
2481 dev->wps_method = WPS_NOT_READY;
2482 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2483 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2484
2485 /* Check if after_scan_tx is for this peer. If so free it */
2486 if (p2p->after_scan_tx &&
2487 os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2488 os_free(p2p->after_scan_tx);
2489 p2p->after_scan_tx = NULL;
2490 }
2491
2492 return 0;
2493 }
2494
2495
2496 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2497 {
2498 os_free(p2p->cfg->dev_name);
2499 if (dev_name) {
2500 p2p->cfg->dev_name = os_strdup(dev_name);
2501 if (p2p->cfg->dev_name == NULL)
2502 return -1;
2503 } else
2504 p2p->cfg->dev_name = NULL;
2505 return 0;
2506 }
2507
2508
2509 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
2510 {
2511 os_free(p2p->cfg->manufacturer);
2512 p2p->cfg->manufacturer = NULL;
2513 if (manufacturer) {
2514 p2p->cfg->manufacturer = os_strdup(manufacturer);
2515 if (p2p->cfg->manufacturer == NULL)
2516 return -1;
2517 }
2518
2519 return 0;
2520 }
2521
2522
2523 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
2524 {
2525 os_free(p2p->cfg->model_name);
2526 p2p->cfg->model_name = NULL;
2527 if (model_name) {
2528 p2p->cfg->model_name = os_strdup(model_name);
2529 if (p2p->cfg->model_name == NULL)
2530 return -1;
2531 }
2532
2533 return 0;
2534 }
2535
2536
2537 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
2538 {
2539 os_free(p2p->cfg->model_number);
2540 p2p->cfg->model_number = NULL;
2541 if (model_number) {
2542 p2p->cfg->model_number = os_strdup(model_number);
2543 if (p2p->cfg->model_number == NULL)
2544 return -1;
2545 }
2546
2547 return 0;
2548 }
2549
2550
2551 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
2552 {
2553 os_free(p2p->cfg->serial_number);
2554 p2p->cfg->serial_number = NULL;
2555 if (serial_number) {
2556 p2p->cfg->serial_number = os_strdup(serial_number);
2557 if (p2p->cfg->serial_number == NULL)
2558 return -1;
2559 }
2560
2561 return 0;
2562 }
2563
2564
2565 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
2566 {
2567 p2p->cfg->config_methods = config_methods;
2568 }
2569
2570
2571 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
2572 {
2573 os_memcpy(p2p->cfg->uuid, uuid, 16);
2574 }
2575
2576
2577 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
2578 {
2579 os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
2580 return 0;
2581 }
2582
2583
2584 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
2585 size_t num_dev_types)
2586 {
2587 if (num_dev_types > P2P_SEC_DEVICE_TYPES)
2588 num_dev_types = P2P_SEC_DEVICE_TYPES;
2589 p2p->cfg->num_sec_dev_types = num_dev_types;
2590 os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
2591 return 0;
2592 }
2593
2594
2595 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
2596 {
2597 int i;
2598
2599 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2600 wpabuf_free(p2p->wps_vendor_ext[i]);
2601 p2p->wps_vendor_ext[i] = NULL;
2602 }
2603 }
2604
2605
2606 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2607 const struct wpabuf *vendor_ext)
2608 {
2609 int i;
2610
2611 if (vendor_ext == NULL)
2612 return -1;
2613
2614 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2615 if (p2p->wps_vendor_ext[i] == NULL)
2616 break;
2617 }
2618 if (i >= P2P_MAX_WPS_VENDOR_EXT)
2619 return -1;
2620
2621 p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
2622 if (p2p->wps_vendor_ext[i] == NULL)
2623 return -1;
2624
2625 return 0;
2626 }
2627
2628
2629 int p2p_set_country(struct p2p_data *p2p, const char *country)
2630 {
2631 os_memcpy(p2p->cfg->country, country, 3);
2632 return 0;
2633 }
2634
2635
2636 void p2p_continue_find(struct p2p_data *p2p)
2637 {
2638 struct p2p_device *dev;
2639 p2p_set_state(p2p, P2P_SEARCH);
2640 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2641 if (dev->flags & P2P_DEV_SD_SCHEDULE) {
2642 if (p2p_start_sd(p2p, dev) == 0)
2643 return;
2644 else
2645 break;
2646 } else if (dev->req_config_methods &&
2647 !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
2648 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
2649 MACSTR " (config methods 0x%x)",
2650 MAC2STR(dev->info.p2p_device_addr),
2651 dev->req_config_methods);
2652 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
2653 return;
2654 }
2655 }
2656
2657 p2p_listen_in_find(p2p, 1);
2658 }
2659
2660
2661 static void p2p_sd_cb(struct p2p_data *p2p, int success)
2662 {
2663 p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
2664 success);
2665 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2666
2667 if (!success) {
2668 if (p2p->sd_peer) {
2669 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
2670 p2p->sd_peer = NULL;
2671 }
2672 p2p_continue_find(p2p);
2673 return;
2674 }
2675
2676 if (p2p->sd_peer == NULL) {
2677 p2p_dbg(p2p, "No SD peer entry known");
2678 p2p_continue_find(p2p);
2679 return;
2680 }
2681
2682 /* Wait for response from the peer */
2683 p2p_set_state(p2p, P2P_SD_DURING_FIND);
2684 p2p_set_timeout(p2p, 0, 200000);
2685 }
2686
2687
2688 /**
2689 * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
2690 * @p2p: P2P module context from p2p_init()
2691 */
2692 static void p2p_retry_pd(struct p2p_data *p2p)
2693 {
2694 struct p2p_device *dev;
2695
2696 if (p2p->state != P2P_IDLE)
2697 return;
2698
2699 /*
2700 * Retry the prov disc req attempt only for the peer that the user had
2701 * requested.
2702 */
2703
2704 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2705 if (os_memcmp(p2p->pending_pd_devaddr,
2706 dev->info.p2p_device_addr, ETH_ALEN) != 0)
2707 continue;
2708 if (!dev->req_config_methods)
2709 continue;
2710
2711 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
2712 MACSTR " (config methods 0x%x)",
2713 MAC2STR(dev->info.p2p_device_addr),
2714 dev->req_config_methods);
2715 p2p_send_prov_disc_req(p2p, dev,
2716 dev->flags & P2P_DEV_PD_FOR_JOIN,
2717 p2p->pd_force_freq);
2718 return;
2719 }
2720 }
2721
2722
2723 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
2724 {
2725 p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
2726 success);
2727
2728 /*
2729 * Postpone resetting the pending action state till after we actually
2730 * time out. This allows us to take some action like notifying any
2731 * interested parties about no response to the request.
2732 *
2733 * When the timer (below) goes off we check in IDLE, SEARCH, or
2734 * LISTEN_ONLY state, which are the only allowed states to issue a PD
2735 * requests in, if this was still pending and then raise notification.
2736 */
2737
2738 if (!success) {
2739 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2740
2741 if (p2p->user_initiated_pd &&
2742 (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
2743 {
2744 /* Retry request from timeout to avoid busy loops */
2745 p2p->pending_action_state = P2P_PENDING_PD;
2746 p2p_set_timeout(p2p, 0, 50000);
2747 } else if (p2p->state != P2P_IDLE)
2748 p2p_continue_find(p2p);
2749 else if (p2p->user_initiated_pd) {
2750 p2p->pending_action_state = P2P_PENDING_PD;
2751 p2p_set_timeout(p2p, 0, 300000);
2752 }
2753 return;
2754 }
2755
2756 /*
2757 * This postponing, of resetting pending_action_state, needs to be
2758 * done only for user initiated PD requests and not internal ones.
2759 */
2760 if (p2p->user_initiated_pd)
2761 p2p->pending_action_state = P2P_PENDING_PD;
2762 else
2763 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2764
2765 /* Wait for response from the peer */
2766 if (p2p->state == P2P_SEARCH)
2767 p2p_set_state(p2p, P2P_PD_DURING_FIND);
2768 p2p_set_timeout(p2p, 0, 200000);
2769 }
2770
2771
2772 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
2773 struct os_reltime *rx_time, int level, const u8 *ies,
2774 size_t ies_len)
2775 {
2776 if (os_reltime_before(rx_time, &p2p->find_start)) {
2777 /*
2778 * The driver may have cached (e.g., in cfg80211 BSS table) the
2779 * scan results for relatively long time. To avoid reporting
2780 * stale information, update P2P peers only based on results
2781 * that have based on frames received after the last p2p_find
2782 * operation was started.
2783 */
2784 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
2785 " (rx_time=%u.%06u)",
2786 MAC2STR(bssid), (unsigned int) rx_time->sec,
2787 (unsigned int) rx_time->usec);
2788 return 0;
2789 }
2790
2791 p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
2792
2793 return 0;
2794 }
2795
2796
2797 void p2p_scan_res_handled(struct p2p_data *p2p)
2798 {
2799 if (!p2p->p2p_scan_running) {
2800 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
2801 }
2802 p2p->p2p_scan_running = 0;
2803 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2804
2805 if (p2p_run_after_scan(p2p))
2806 return;
2807 if (p2p->state == P2P_SEARCH)
2808 p2p_continue_find(p2p);
2809 }
2810
2811
2812 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
2813 {
2814 u8 *len;
2815
2816 #ifdef CONFIG_WIFI_DISPLAY
2817 if (p2p->wfd_ie_probe_req)
2818 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
2819 #endif /* CONFIG_WIFI_DISPLAY */
2820
2821 len = p2p_buf_add_ie_hdr(ies);
2822 p2p_buf_add_capability(ies, p2p->dev_capab &
2823 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2824 if (dev_id)
2825 p2p_buf_add_device_id(ies, dev_id);
2826 if (p2p->cfg->reg_class && p2p->cfg->channel)
2827 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
2828 p2p->cfg->reg_class,
2829 p2p->cfg->channel);
2830 if (p2p->ext_listen_interval)
2831 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
2832 p2p->ext_listen_interval);
2833 /* TODO: p2p_buf_add_operating_channel() if GO */
2834 p2p_buf_update_ie_hdr(ies, len);
2835 }
2836
2837
2838 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
2839 {
2840 size_t len = 100;
2841
2842 #ifdef CONFIG_WIFI_DISPLAY
2843 if (p2p && p2p->wfd_ie_probe_req)
2844 len += wpabuf_len(p2p->wfd_ie_probe_req);
2845 #endif /* CONFIG_WIFI_DISPLAY */
2846
2847 return len;
2848 }
2849
2850
2851 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
2852 {
2853 return p2p_attr_text(p2p_ie, buf, end);
2854 }
2855
2856
2857 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
2858 {
2859 struct p2p_device *dev = p2p->go_neg_peer;
2860 int timeout;
2861
2862 p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
2863
2864 if (dev == NULL) {
2865 p2p_dbg(p2p, "No pending GO Negotiation");
2866 return;
2867 }
2868
2869 if (success) {
2870 if (dev->flags & P2P_DEV_USER_REJECTED) {
2871 p2p_set_state(p2p, P2P_IDLE);
2872 return;
2873 }
2874 } else if (dev->go_neg_req_sent) {
2875 /* Cancel the increment from p2p_connect_send() on failure */
2876 dev->go_neg_req_sent--;
2877 }
2878
2879 if (!success &&
2880 (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
2881 !is_zero_ether_addr(dev->member_in_go_dev)) {
2882 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
2883 MAC2STR(dev->info.p2p_device_addr));
2884 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2885 p2p_send_dev_disc_req(p2p, dev);
2886 return;
2887 }
2888
2889 /*
2890 * Use P2P find, if needed, to find the other device from its listen
2891 * channel.
2892 */
2893 p2p_set_state(p2p, P2P_CONNECT);
2894 timeout = success ? 500000 : 100000;
2895 if (!success && p2p->go_neg_peer &&
2896 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
2897 unsigned int r;
2898 /*
2899 * Peer is expected to wait our response and we will skip the
2900 * listen phase. Add some randomness to the wait time here to
2901 * make it less likely to hit cases where we could end up in
2902 * sync with peer not listening.
2903 */
2904 os_get_random((u8 *) &r, sizeof(r));
2905 timeout += r % 100000;
2906 }
2907 p2p_set_timeout(p2p, 0, timeout);
2908 }
2909
2910
2911 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
2912 {
2913 p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
2914 success);
2915 if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
2916 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
2917 return;
2918 }
2919 p2p_set_state(p2p, P2P_CONNECT);
2920 p2p_set_timeout(p2p, 0, 500000);
2921 }
2922
2923
2924 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
2925 const u8 *addr)
2926 {
2927 p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
2928 if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
2929 p2p_go_neg_failed(p2p, p2p->go_neg_peer,
2930 p2p->go_neg_peer->status);
2931 } else if (success) {
2932 struct p2p_device *dev;
2933 dev = p2p_get_device(p2p, addr);
2934 if (dev &&
2935 dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
2936 dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
2937 }
2938 }
2939
2940
2941 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
2942 enum p2p_send_action_result result)
2943 {
2944 struct p2p_device *dev;
2945
2946 p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
2947 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2948 if (result == P2P_SEND_ACTION_FAILED) {
2949 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2950 return;
2951 }
2952 if (result == P2P_SEND_ACTION_NO_ACK) {
2953 /*
2954 * It looks like the TX status for GO Negotiation Confirm is
2955 * often showing failure even when the peer has actually
2956 * received the frame. Since the peer may change channels
2957 * immediately after having received the frame, we may not see
2958 * an Ack for retries, so just dropping a single frame may
2959 * trigger this. To allow the group formation to succeed if the
2960 * peer did indeed receive the frame, continue regardless of
2961 * the TX status.
2962 */
2963 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
2964 }
2965
2966 dev = p2p->go_neg_peer;
2967 if (dev == NULL)
2968 return;
2969
2970 p2p_go_complete(p2p, dev);
2971 }
2972
2973
2974 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
2975 const u8 *src, const u8 *bssid,
2976 enum p2p_send_action_result result)
2977 {
2978 enum p2p_pending_action_state state;
2979 int success;
2980
2981 p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
2982 " src=" MACSTR " bssid=" MACSTR " result=%d",
2983 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
2984 MAC2STR(bssid), result);
2985 success = result == P2P_SEND_ACTION_SUCCESS;
2986 state = p2p->pending_action_state;
2987 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2988 switch (state) {
2989 case P2P_NO_PENDING_ACTION:
2990 if (p2p->after_scan_tx_in_progress) {
2991 p2p->after_scan_tx_in_progress = 0;
2992 if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
2993 p2p_run_after_scan(p2p))
2994 break;
2995 if (p2p->state == P2P_SEARCH) {
2996 p2p_dbg(p2p, "Continue find after after_scan_tx completion");
2997 p2p_continue_find(p2p);
2998 }
2999 }
3000 break;
3001 case P2P_PENDING_GO_NEG_REQUEST:
3002 p2p_go_neg_req_cb(p2p, success);
3003 break;
3004 case P2P_PENDING_GO_NEG_RESPONSE:
3005 p2p_go_neg_resp_cb(p2p, success);
3006 break;
3007 case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
3008 p2p_go_neg_resp_failure_cb(p2p, success, dst);
3009 break;
3010 case P2P_PENDING_GO_NEG_CONFIRM:
3011 p2p_go_neg_conf_cb(p2p, result);
3012 break;
3013 case P2P_PENDING_SD:
3014 p2p_sd_cb(p2p, success);
3015 break;
3016 case P2P_PENDING_PD:
3017 p2p_prov_disc_cb(p2p, success);
3018 break;
3019 case P2P_PENDING_INVITATION_REQUEST:
3020 p2p_invitation_req_cb(p2p, success);
3021 break;
3022 case P2P_PENDING_INVITATION_RESPONSE:
3023 p2p_invitation_resp_cb(p2p, success);
3024 break;
3025 case P2P_PENDING_DEV_DISC_REQUEST:
3026 p2p_dev_disc_req_cb(p2p, success);
3027 break;
3028 case P2P_PENDING_DEV_DISC_RESPONSE:
3029 p2p_dev_disc_resp_cb(p2p, success);
3030 break;
3031 case P2P_PENDING_GO_DISC_REQ:
3032 p2p_go_disc_req_cb(p2p, success);
3033 break;
3034 }
3035
3036 p2p->after_scan_tx_in_progress = 0;
3037 }
3038
3039
3040 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3041 unsigned int duration)
3042 {
3043 if (freq == p2p->pending_client_disc_freq) {
3044 p2p_dbg(p2p, "Client discoverability remain-awake completed");
3045 p2p->pending_client_disc_freq = 0;
3046 return;
3047 }
3048
3049 if (freq != p2p->pending_listen_freq) {
3050 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
3051 freq, duration, p2p->pending_listen_freq);
3052 return;
3053 }
3054
3055 p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
3056 p2p->pending_listen_sec, p2p->pending_listen_usec,
3057 p2p->pending_listen_freq);
3058 p2p->in_listen = 1;
3059 p2p->drv_in_listen = freq;
3060 if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3061 /*
3062 * Add 20 msec extra wait to avoid race condition with driver
3063 * remain-on-channel end event, i.e., give driver more time to
3064 * complete the operation before our timeout expires.
3065 */
3066 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3067 p2p->pending_listen_usec + 20000);
3068 }
3069
3070 p2p->pending_listen_freq = 0;
3071 }
3072
3073
3074 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3075 {
3076 p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
3077 p2p->drv_in_listen = 0;
3078 if (p2p->in_listen)
3079 return 0; /* Internal timeout will trigger the next step */
3080
3081 if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3082 if (p2p->go_neg_peer->connect_reqs >= 120) {
3083 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3084 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3085 return 0;
3086 }
3087
3088 p2p_set_state(p2p, P2P_CONNECT);
3089 p2p_connect_send(p2p, p2p->go_neg_peer);
3090 return 1;
3091 } else if (p2p->state == P2P_SEARCH) {
3092 if (p2p->p2p_scan_running) {
3093 /*
3094 * Search is already in progress. This can happen if
3095 * an Action frame RX is reported immediately after
3096 * the end of a remain-on-channel operation and the
3097 * response frame to that is sent using an offchannel
3098 * operation while in p2p_find. Avoid an attempt to
3099 * restart a scan here.
3100 */
3101 p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
3102 return 1;
3103 }
3104 if (p2p->pending_listen_freq) {
3105 /*
3106 * Better wait a bit if the driver is unable to start
3107 * offchannel operation for some reason. p2p_search()
3108 * will be started from internal timeout.
3109 */
3110 p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3111 p2p_set_timeout(p2p, 0, 100000);
3112 return 1;
3113 }
3114 if (p2p->search_delay) {
3115 p2p_dbg(p2p, "Delay search operation by %u ms",
3116 p2p->search_delay);
3117 p2p_set_timeout(p2p, p2p->search_delay / 1000,
3118 (p2p->search_delay % 1000) * 1000);
3119 return 1;
3120 }
3121 p2p_search(p2p);
3122 return 1;
3123 }
3124
3125 return 0;
3126 }
3127
3128
3129 static void p2p_timeout_connect(struct p2p_data *p2p)
3130 {
3131 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3132 if (p2p->go_neg_peer &&
3133 (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3134 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
3135 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3136 return;
3137 }
3138 if (p2p->go_neg_peer &&
3139 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3140 p2p->go_neg_peer->connect_reqs < 120) {
3141 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
3142 p2p_connect_send(p2p, p2p->go_neg_peer);
3143 return;
3144 }
3145
3146 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3147 p2p_listen_in_find(p2p, 0);
3148 }
3149
3150
3151 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3152 {
3153 if (p2p->go_neg_peer) {
3154 if (p2p->drv_in_listen) {
3155 p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
3156 return;
3157 }
3158
3159 if (p2p->go_neg_peer->connect_reqs >= 120) {
3160 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3161 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3162 return;
3163 }
3164
3165 p2p_set_state(p2p, P2P_CONNECT);
3166 p2p_connect_send(p2p, p2p->go_neg_peer);
3167 } else
3168 p2p_set_state(p2p, P2P_IDLE);
3169 }
3170
3171
3172 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3173 {
3174 /*
3175 * TODO: could remain constantly in Listen state for some time if there
3176 * are no other concurrent uses for the radio. For now, go to listen
3177 * state once per second to give other uses a chance to use the radio.
3178 */
3179 p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
3180 p2p_set_timeout(p2p, 0, 500000);
3181 }
3182
3183
3184 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3185 {
3186 struct p2p_device *dev = p2p->go_neg_peer;
3187
3188 if (dev == NULL) {
3189 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
3190 return;
3191 }
3192
3193 dev->wait_count++;
3194 if (dev->wait_count >= 120) {
3195 p2p_dbg(p2p, "Timeout on waiting peer to become ready for GO Negotiation");
3196 p2p_go_neg_failed(p2p, dev, -1);
3197 return;
3198 }
3199
3200 p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
3201 p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
3202 p2p_listen_in_find(p2p, 0);
3203 }
3204
3205
3206 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3207 {
3208 p2p_dbg(p2p, "Service Discovery Query timeout");
3209 if (p2p->sd_peer) {
3210 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3211 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
3212 p2p->sd_peer = NULL;
3213 }
3214 p2p_continue_find(p2p);
3215 }
3216
3217
3218 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3219 {
3220 p2p_dbg(p2p, "Provision Discovery Request timeout");
3221 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3222 p2p_continue_find(p2p);
3223 }
3224
3225
3226 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3227 {
3228 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3229
3230 /*
3231 * For user initiated PD requests that we have not gotten any responses
3232 * for while in IDLE state, we retry them a couple of times before
3233 * giving up.
3234 */
3235 if (!p2p->user_initiated_pd)
3236 return;
3237
3238 p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
3239
3240 if (p2p->pd_retries) {
3241 p2p->pd_retries--;
3242 p2p_retry_pd(p2p);
3243 } else {
3244 struct p2p_device *dev;
3245 int for_join = 0;
3246
3247 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3248 if (os_memcmp(p2p->pending_pd_devaddr,
3249 dev->info.p2p_device_addr, ETH_ALEN) != 0)
3250 continue;
3251 if (dev->req_config_methods &&
3252 (dev->flags & P2P_DEV_PD_FOR_JOIN))
3253 for_join = 1;
3254 }
3255
3256 if (p2p->cfg->prov_disc_fail)
3257 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
3258 p2p->pending_pd_devaddr,
3259 for_join ?
3260 P2P_PROV_DISC_TIMEOUT_JOIN :
3261 P2P_PROV_DISC_TIMEOUT);
3262 p2p_reset_pending_pd(p2p);
3263 }
3264 }
3265
3266
3267 static void p2p_timeout_invite(struct p2p_data *p2p)
3268 {
3269 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3270 p2p_set_state(p2p, P2P_INVITE_LISTEN);
3271 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
3272 /*
3273 * Better remain on operating channel instead of listen channel
3274 * when running a group.
3275 */
3276 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
3277 p2p_set_timeout(p2p, 0, 100000);
3278 return;
3279 }
3280 p2p_listen_in_find(p2p, 0);
3281 }
3282
3283
3284 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3285 {
3286 if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3287 p2p_set_state(p2p, P2P_INVITE);
3288 p2p_invite_send(p2p, p2p->invite_peer,
3289 p2p->invite_go_dev_addr);
3290 } else {
3291 if (p2p->invite_peer) {
3292 p2p_dbg(p2p, "Invitation Request retry limit reached");
3293 if (p2p->cfg->invitation_result)
3294 p2p->cfg->invitation_result(
3295 p2p->cfg->cb_ctx, -1, NULL, NULL,
3296 p2p->invite_peer->info.p2p_device_addr,
3297 0);
3298 }
3299 p2p_set_state(p2p, P2P_IDLE);
3300 }
3301 }
3302
3303
3304 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3305 {
3306 struct p2p_data *p2p = eloop_ctx;
3307
3308 p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
3309
3310 p2p->in_listen = 0;
3311
3312 switch (p2p->state) {
3313 case P2P_IDLE:
3314 /* Check if we timed out waiting for PD req */
3315 if (p2p->pending_action_state == P2P_PENDING_PD)
3316 p2p_timeout_prov_disc_req(p2p);
3317 break;
3318 case P2P_SEARCH:
3319 /* Check if we timed out waiting for PD req */
3320 if (p2p->pending_action_state == P2P_PENDING_PD)
3321 p2p_timeout_prov_disc_req(p2p);
3322 if (p2p->search_delay && !p2p->in_search_delay) {
3323 p2p_dbg(p2p, "Delay search operation by %u ms",
3324 p2p->search_delay);
3325 p2p->in_search_delay = 1;
3326 p2p_set_timeout(p2p, p2p->search_delay / 1000,
3327 (p2p->search_delay % 1000) * 1000);
3328 break;
3329 }
3330 p2p->in_search_delay = 0;
3331 p2p_search(p2p);
3332 break;
3333 case P2P_CONNECT:
3334 p2p_timeout_connect(p2p);
3335 break;
3336 case P2P_CONNECT_LISTEN:
3337 p2p_timeout_connect_listen(p2p);
3338 break;
3339 case P2P_GO_NEG:
3340 break;
3341 case P2P_LISTEN_ONLY:
3342 /* Check if we timed out waiting for PD req */
3343 if (p2p->pending_action_state == P2P_PENDING_PD)
3344 p2p_timeout_prov_disc_req(p2p);
3345
3346 if (p2p->ext_listen_only) {
3347 p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
3348 p2p->ext_listen_only = 0;
3349 p2p_set_state(p2p, P2P_IDLE);
3350 }
3351 break;
3352 case P2P_WAIT_PEER_CONNECT:
3353 p2p_timeout_wait_peer_connect(p2p);
3354 break;
3355 case P2P_WAIT_PEER_IDLE:
3356 p2p_timeout_wait_peer_idle(p2p);
3357 break;
3358 case P2P_SD_DURING_FIND:
3359 p2p_timeout_sd_during_find(p2p);
3360 break;
3361 case P2P_PROVISIONING:
3362 break;
3363 case P2P_PD_DURING_FIND:
3364 p2p_timeout_prov_disc_during_find(p2p);
3365 break;
3366 case P2P_INVITE:
3367 p2p_timeout_invite(p2p);
3368 break;
3369 case P2P_INVITE_LISTEN:
3370 p2p_timeout_invite_listen(p2p);
3371 break;
3372 case P2P_SEARCH_WHEN_READY:
3373 break;
3374 case P2P_CONTINUE_SEARCH_WHEN_READY:
3375 break;
3376 }
3377 }
3378
3379
3380 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
3381 {
3382 struct p2p_device *dev;
3383
3384 dev = p2p_get_device(p2p, peer_addr);
3385 p2p_dbg(p2p, "Local request to reject connection attempts by peer "
3386 MACSTR, MAC2STR(peer_addr));
3387 if (dev == NULL) {
3388 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
3389 return -1;
3390 }
3391 dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
3392 dev->flags |= P2P_DEV_USER_REJECTED;
3393 return 0;
3394 }
3395
3396
3397 const char * p2p_wps_method_text(enum p2p_wps_method method)
3398 {
3399 switch (method) {
3400 case WPS_NOT_READY:
3401 return "not-ready";
3402 case WPS_PIN_DISPLAY:
3403 return "Display";
3404 case WPS_PIN_KEYPAD:
3405 return "Keypad";
3406 case WPS_PBC:
3407 return "PBC";
3408 }
3409
3410 return "??";
3411 }
3412
3413
3414 static const char * p2p_go_state_text(enum p2p_go_state go_state)
3415 {
3416 switch (go_state) {
3417 case UNKNOWN_GO:
3418 return "unknown";
3419 case LOCAL_GO:
3420 return "local";
3421 case REMOTE_GO:
3422 return "remote";
3423 }
3424
3425 return "??";
3426 }
3427
3428
3429 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
3430 const u8 *addr, int next)
3431 {
3432 struct p2p_device *dev;
3433
3434 if (addr)
3435 dev = p2p_get_device(p2p, addr);
3436 else
3437 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3438
3439 if (dev && next) {
3440 dev = dl_list_first(&dev->list, struct p2p_device, list);
3441 if (&dev->list == &p2p->devices)
3442 dev = NULL;
3443 }
3444
3445 if (dev == NULL)
3446 return NULL;
3447
3448 return &dev->info;
3449 }
3450
3451
3452 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
3453 char *buf, size_t buflen)
3454 {
3455 struct p2p_device *dev;
3456 int res;
3457 char *pos, *end;
3458 struct os_reltime now;
3459
3460 if (info == NULL)
3461 return -1;
3462
3463 dev = (struct p2p_device *) (((u8 *) info) -
3464 offsetof(struct p2p_device, info));
3465
3466 pos = buf;
3467 end = buf + buflen;
3468
3469 os_get_reltime(&now);
3470 res = os_snprintf(pos, end - pos,
3471 "age=%d\n"
3472 "listen_freq=%d\n"
3473 "wps_method=%s\n"
3474 "interface_addr=" MACSTR "\n"
3475 "member_in_go_dev=" MACSTR "\n"
3476 "member_in_go_iface=" MACSTR "\n"
3477 "go_neg_req_sent=%d\n"
3478 "go_state=%s\n"
3479 "dialog_token=%u\n"
3480 "intended_addr=" MACSTR "\n"
3481 "country=%c%c\n"
3482 "oper_freq=%d\n"
3483 "req_config_methods=0x%x\n"
3484 "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
3485 "status=%d\n"
3486 "wait_count=%u\n"
3487 "invitation_reqs=%u\n",
3488 (int) (now.sec - dev->last_seen.sec),
3489 dev->listen_freq,
3490 p2p_wps_method_text(dev->wps_method),
3491 MAC2STR(dev->interface_addr),
3492 MAC2STR(dev->member_in_go_dev),
3493 MAC2STR(dev->member_in_go_iface),
3494 dev->go_neg_req_sent,
3495 p2p_go_state_text(dev->go_state),
3496 dev->dialog_token,
3497 MAC2STR(dev->intended_addr),
3498 dev->country[0] ? dev->country[0] : '_',
3499 dev->country[1] ? dev->country[1] : '_',
3500 dev->oper_freq,
3501 dev->req_config_methods,
3502 dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
3503 "[PROBE_REQ_ONLY]" : "",
3504 dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
3505 dev->flags & P2P_DEV_NOT_YET_READY ?
3506 "[NOT_YET_READY]" : "",
3507 dev->flags & P2P_DEV_SD_INFO ? "[SD_INFO]" : "",
3508 dev->flags & P2P_DEV_SD_SCHEDULE ? "[SD_SCHEDULE]" :
3509 "",
3510 dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
3511 "[PD_PEER_DISPLAY]" : "",
3512 dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
3513 "[PD_PEER_KEYPAD]" : "",
3514 dev->flags & P2P_DEV_USER_REJECTED ?
3515 "[USER_REJECTED]" : "",
3516 dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
3517 "[PEER_WAITING_RESPONSE]" : "",
3518 dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
3519 "[PREFER_PERSISTENT_GROUP]" : "",
3520 dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
3521 "[WAIT_GO_NEG_RESPONSE]" : "",
3522 dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
3523 "[WAIT_GO_NEG_CONFIRM]" : "",
3524 dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
3525 "[GROUP_CLIENT_ONLY]" : "",
3526 dev->flags & P2P_DEV_FORCE_FREQ ?
3527 "[FORCE_FREQ]" : "",
3528 dev->flags & P2P_DEV_PD_FOR_JOIN ?
3529 "[PD_FOR_JOIN]" : "",
3530 dev->status,
3531 dev->wait_count,
3532 dev->invitation_reqs);
3533 if (res < 0 || res >= end - pos)
3534 return pos - buf;
3535 pos += res;
3536
3537 if (dev->ext_listen_period) {
3538 res = os_snprintf(pos, end - pos,
3539 "ext_listen_period=%u\n"
3540 "ext_listen_interval=%u\n",
3541 dev->ext_listen_period,
3542 dev->ext_listen_interval);
3543 if (res < 0 || res >= end - pos)
3544 return pos - buf;
3545 pos += res;
3546 }
3547
3548 if (dev->oper_ssid_len) {
3549 res = os_snprintf(pos, end - pos,
3550 "oper_ssid=%s\n",
3551 wpa_ssid_txt(dev->oper_ssid,
3552 dev->oper_ssid_len));
3553 if (res < 0 || res >= end - pos)
3554 return pos - buf;
3555 pos += res;
3556 }
3557
3558 #ifdef CONFIG_WIFI_DISPLAY
3559 if (dev->info.wfd_subelems) {
3560 res = os_snprintf(pos, end - pos, "wfd_subelems=");
3561 if (res < 0 || res >= end - pos)
3562 return pos - buf;
3563 pos += res;
3564
3565 pos += wpa_snprintf_hex(pos, end - pos,
3566 wpabuf_head(dev->info.wfd_subelems),
3567 wpabuf_len(dev->info.wfd_subelems));
3568
3569 res = os_snprintf(pos, end - pos, "\n");
3570 if (res < 0 || res >= end - pos)
3571 return pos - buf;
3572 pos += res;
3573 }
3574 #endif /* CONFIG_WIFI_DISPLAY */
3575
3576 return pos - buf;
3577 }
3578
3579
3580 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
3581 {
3582 return p2p_get_device(p2p, addr) != NULL;
3583 }
3584
3585
3586 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
3587 {
3588 if (enabled) {
3589 p2p_dbg(p2p, "Client discoverability enabled");
3590 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3591 } else {
3592 p2p_dbg(p2p, "Client discoverability disabled");
3593 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3594 }
3595 }
3596
3597
3598 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
3599 u32 duration2, u32 interval2)
3600 {
3601 struct wpabuf *req;
3602 struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
3603 u8 *len;
3604
3605 req = wpabuf_alloc(100);
3606 if (req == NULL)
3607 return NULL;
3608
3609 if (duration1 || interval1) {
3610 os_memset(&desc1, 0, sizeof(desc1));
3611 desc1.count_type = 1;
3612 desc1.duration = duration1;
3613 desc1.interval = interval1;
3614 ptr1 = &desc1;
3615
3616 if (duration2 || interval2) {
3617 os_memset(&desc2, 0, sizeof(desc2));
3618 desc2.count_type = 2;
3619 desc2.duration = duration2;
3620 desc2.interval = interval2;
3621 ptr2 = &desc2;
3622 }
3623 }
3624
3625 p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
3626 len = p2p_buf_add_ie_hdr(req);
3627 p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
3628 p2p_buf_update_ie_hdr(req, len);
3629
3630 return req;
3631 }
3632
3633
3634 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
3635 const u8 *own_interface_addr, unsigned int freq,
3636 u32 duration1, u32 interval1, u32 duration2,
3637 u32 interval2)
3638 {
3639 struct wpabuf *req;
3640
3641 p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
3642 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
3643 "dur2=%u int2=%u",
3644 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
3645 freq, duration1, interval1, duration2, interval2);
3646
3647 req = p2p_build_presence_req(duration1, interval1, duration2,
3648 interval2);
3649 if (req == NULL)
3650 return -1;
3651
3652 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3653 if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
3654 go_interface_addr,
3655 wpabuf_head(req), wpabuf_len(req), 200) < 0) {
3656 p2p_dbg(p2p, "Failed to send Action frame");
3657 }
3658 wpabuf_free(req);
3659
3660 return 0;
3661 }
3662
3663
3664 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
3665 size_t noa_len, u8 dialog_token)
3666 {
3667 struct wpabuf *resp;
3668 u8 *len;
3669
3670 resp = wpabuf_alloc(100 + noa_len);
3671 if (resp == NULL)
3672 return NULL;
3673
3674 p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
3675 len = p2p_buf_add_ie_hdr(resp);
3676 p2p_buf_add_status(resp, status);
3677 if (noa) {
3678 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
3679 wpabuf_put_le16(resp, noa_len);
3680 wpabuf_put_data(resp, noa, noa_len);
3681 } else
3682 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
3683 p2p_buf_update_ie_hdr(resp, len);
3684
3685 return resp;
3686 }
3687
3688
3689 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
3690 const u8 *sa, const u8 *data, size_t len,
3691 int rx_freq)
3692 {
3693 struct p2p_message msg;
3694 u8 status;
3695 struct wpabuf *resp;
3696 size_t g;
3697 struct p2p_group *group = NULL;
3698 int parsed = 0;
3699 u8 noa[50];
3700 int noa_len;
3701
3702 p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
3703
3704 for (g = 0; g < p2p->num_groups; g++) {
3705 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
3706 ETH_ALEN) == 0) {
3707 group = p2p->groups[g];
3708 break;
3709 }
3710 }
3711 if (group == NULL) {
3712 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
3713 MACSTR, MAC2STR(da));
3714 return;
3715 }
3716
3717 if (p2p_parse(data, len, &msg) < 0) {
3718 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
3719 status = P2P_SC_FAIL_INVALID_PARAMS;
3720 goto fail;
3721 }
3722 parsed = 1;
3723
3724 if (msg.noa == NULL) {
3725 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
3726 status = P2P_SC_FAIL_INVALID_PARAMS;
3727 goto fail;
3728 }
3729
3730 status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
3731
3732 fail:
3733 if (p2p->cfg->get_noa)
3734 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
3735 sizeof(noa));
3736 else
3737 noa_len = -1;
3738 resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
3739 noa_len > 0 ? noa_len : 0,
3740 msg.dialog_token);
3741 if (parsed)
3742 p2p_parse_free(&msg);
3743 if (resp == NULL)
3744 return;
3745
3746 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3747 if (p2p_send_action(p2p, rx_freq, sa, da, da,
3748 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
3749 p2p_dbg(p2p, "Failed to send Action frame");
3750 }
3751 wpabuf_free(resp);
3752 }
3753
3754
3755 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
3756 const u8 *sa, const u8 *data, size_t len)
3757 {
3758 struct p2p_message msg;
3759
3760 p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
3761
3762 if (p2p_parse(data, len, &msg) < 0) {
3763 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
3764 return;
3765 }
3766
3767 if (msg.status == NULL || msg.noa == NULL) {
3768 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
3769 p2p_parse_free(&msg);
3770 return;
3771 }
3772
3773 if (*msg.status) {
3774 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
3775 *msg.status);
3776 p2p_parse_free(&msg);
3777 return;
3778 }
3779
3780 p2p_dbg(p2p, "P2P Presence Request was accepted");
3781 wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
3782 msg.noa, msg.noa_len);
3783 /* TODO: process NoA */
3784 p2p_parse_free(&msg);
3785 }
3786
3787
3788 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
3789 {
3790 struct p2p_data *p2p = eloop_ctx;
3791
3792 if (p2p->ext_listen_interval) {
3793 /* Schedule next extended listen timeout */
3794 eloop_register_timeout(p2p->ext_listen_interval_sec,
3795 p2p->ext_listen_interval_usec,
3796 p2p_ext_listen_timeout, p2p, NULL);
3797 }
3798
3799 if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
3800 /*
3801 * This should not really happen, but it looks like the Listen
3802 * command may fail is something else (e.g., a scan) was
3803 * running at an inconvenient time. As a workaround, allow new
3804 * Extended Listen operation to be started.
3805 */
3806 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
3807 p2p->ext_listen_only = 0;
3808 p2p_set_state(p2p, P2P_IDLE);
3809 }
3810
3811 if (p2p->state != P2P_IDLE) {
3812 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
3813 return;
3814 }
3815
3816 p2p_dbg(p2p, "Extended Listen timeout");
3817 p2p->ext_listen_only = 1;
3818 if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
3819 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
3820 p2p->ext_listen_only = 0;
3821 }
3822 }
3823
3824
3825 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
3826 unsigned int interval)
3827 {
3828 if (period > 65535 || interval > 65535 || period > interval ||
3829 (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
3830 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
3831 period, interval);
3832 return -1;
3833 }
3834
3835 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
3836
3837 if (interval == 0) {
3838 p2p_dbg(p2p, "Disabling Extended Listen Timing");
3839 p2p->ext_listen_period = 0;
3840 p2p->ext_listen_interval = 0;
3841 return 0;
3842 }
3843
3844 p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
3845 period, interval);
3846 p2p->ext_listen_period = period;
3847 p2p->ext_listen_interval = interval;
3848 p2p->ext_listen_interval_sec = interval / 1000;
3849 p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
3850
3851 eloop_register_timeout(p2p->ext_listen_interval_sec,
3852 p2p->ext_listen_interval_usec,
3853 p2p_ext_listen_timeout, p2p, NULL);
3854
3855 return 0;
3856 }
3857
3858
3859 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3860 const u8 *ie, size_t ie_len)
3861 {
3862 struct p2p_message msg;
3863
3864 if (bssid == NULL || ie == NULL)
3865 return;
3866
3867 os_memset(&msg, 0, sizeof(msg));
3868 if (p2p_parse_ies(ie, ie_len, &msg))
3869 return;
3870 if (msg.minor_reason_code == NULL)
3871 return;
3872
3873 p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
3874 " reason_code=%u minor_reason_code=%u",
3875 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3876
3877 p2p_parse_free(&msg);
3878 }
3879
3880
3881 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3882 const u8 *ie, size_t ie_len)
3883 {
3884 struct p2p_message msg;
3885
3886 if (bssid == NULL || ie == NULL)
3887 return;
3888
3889 os_memset(&msg, 0, sizeof(msg));
3890 if (p2p_parse_ies(ie, ie_len, &msg))
3891 return;
3892 if (msg.minor_reason_code == NULL)
3893 return;
3894
3895 p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
3896 " reason_code=%u minor_reason_code=%u",
3897 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3898
3899 p2p_parse_free(&msg);
3900 }
3901
3902
3903 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
3904 {
3905 if (enabled) {
3906 p2p_dbg(p2p, "Managed P2P Device operations enabled");
3907 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
3908 } else {
3909 p2p_dbg(p2p, "Managed P2P Device operations disabled");
3910 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
3911 }
3912 }
3913
3914
3915 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel)
3916 {
3917 if (p2p_channel_to_freq(reg_class, channel) < 0)
3918 return -1;
3919
3920 p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
3921 reg_class, channel);
3922 p2p->cfg->reg_class = reg_class;
3923 p2p->cfg->channel = channel;
3924
3925 return 0;
3926 }
3927
3928
3929 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
3930 {
3931 p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
3932 if (postfix == NULL) {
3933 p2p->cfg->ssid_postfix_len = 0;
3934 return 0;
3935 }
3936 if (len > sizeof(p2p->cfg->ssid_postfix))
3937 return -1;
3938 os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
3939 p2p->cfg->ssid_postfix_len = len;
3940 return 0;
3941 }
3942
3943
3944 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
3945 int cfg_op_channel)
3946 {
3947 if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
3948 return -1;
3949
3950 p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
3951 op_reg_class, op_channel);
3952 p2p->cfg->op_reg_class = op_reg_class;
3953 p2p->cfg->op_channel = op_channel;
3954 p2p->cfg->cfg_op_channel = cfg_op_channel;
3955 return 0;
3956 }
3957
3958
3959 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
3960 const struct p2p_channel *pref_chan)
3961 {
3962 struct p2p_channel *n;
3963
3964 if (pref_chan) {
3965 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
3966 if (n == NULL)
3967 return -1;
3968 os_memcpy(n, pref_chan,
3969 num_pref_chan * sizeof(struct p2p_channel));
3970 } else
3971 n = NULL;
3972
3973 os_free(p2p->cfg->pref_chan);
3974 p2p->cfg->pref_chan = n;
3975 p2p->cfg->num_pref_chan = num_pref_chan;
3976
3977 return 0;
3978 }
3979
3980
3981 int p2p_set_no_go_freq(struct p2p_data *p2p,
3982 const struct wpa_freq_range_list *list)
3983 {
3984 struct wpa_freq_range *tmp;
3985
3986 if (list == NULL || list->num == 0) {
3987 os_free(p2p->no_go_freq.range);
3988 p2p->no_go_freq.range = NULL;
3989 p2p->no_go_freq.num = 0;
3990 return 0;
3991 }
3992
3993 tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
3994 if (tmp == NULL)
3995 return -1;
3996 os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
3997 os_free(p2p->no_go_freq.range);
3998 p2p->no_go_freq.range = tmp;
3999 p2p->no_go_freq.num = list->num;
4000 p2p_dbg(p2p, "Updated no GO chan list");
4001
4002 return 0;
4003 }
4004
4005
4006 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4007 u8 *iface_addr)
4008 {
4009 struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4010 if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4011 return -1;
4012 os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4013 return 0;
4014 }
4015
4016
4017 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4018 u8 *dev_addr)
4019 {
4020 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4021 if (dev == NULL)
4022 return -1;
4023 os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4024 return 0;
4025 }
4026
4027
4028 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4029 {
4030 os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4031 if (is_zero_ether_addr(p2p->peer_filter))
4032 p2p_dbg(p2p, "Disable peer filter");
4033 else
4034 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4035 MAC2STR(p2p->peer_filter));
4036 }
4037
4038
4039 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4040 {
4041 p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
4042 if (p2p->cross_connect == enabled)
4043 return;
4044 p2p->cross_connect = enabled;
4045 /* TODO: may need to tear down any action group where we are GO(?) */
4046 }
4047
4048
4049 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4050 {
4051 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4052 if (dev == NULL)
4053 return -1;
4054 if (dev->oper_freq <= 0)
4055 return -1;
4056 return dev->oper_freq;
4057 }
4058
4059
4060 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4061 {
4062 p2p_dbg(p2p, "Intra BSS distribution %s",
4063 enabled ? "enabled" : "disabled");
4064 p2p->cfg->p2p_intra_bss = enabled;
4065 }
4066
4067
4068 void p2p_update_channel_list(struct p2p_data *p2p,
4069 const struct p2p_channels *chan,
4070 const struct p2p_channels *cli_chan)
4071 {
4072 p2p_dbg(p2p, "Update channel list");
4073 os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4074 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4075 os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4076 sizeof(struct p2p_channels));
4077 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
4078 }
4079
4080
4081 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4082 const u8 *src, const u8 *bssid, const u8 *buf,
4083 size_t len, unsigned int wait_time)
4084 {
4085 if (p2p->p2p_scan_running) {
4086 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
4087 if (p2p->after_scan_tx) {
4088 p2p_dbg(p2p, "Dropped previous pending Action frame TX");
4089 os_free(p2p->after_scan_tx);
4090 }
4091 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4092 len);
4093 if (p2p->after_scan_tx == NULL)
4094 return -1;
4095 p2p->after_scan_tx->freq = freq;
4096 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4097 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4098 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4099 p2p->after_scan_tx->len = len;
4100 p2p->after_scan_tx->wait_time = wait_time;
4101 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4102 return 0;
4103 }
4104
4105 return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4106 buf, len, wait_time);
4107 }
4108
4109
4110 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4111 int freq_overall)
4112 {
4113 p2p_dbg(p2p, "Best channel: 2.4 GHz: %d, 5 GHz: %d, overall: %d",
4114 freq_24, freq_5, freq_overall);
4115 p2p->best_freq_24 = freq_24;
4116 p2p->best_freq_5 = freq_5;
4117 p2p->best_freq_overall = freq_overall;
4118 }
4119
4120
4121 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4122 {
4123 p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
4124 p2p->own_freq_preference = freq;
4125 }
4126
4127
4128 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4129 {
4130 if (p2p == NULL || p2p->go_neg_peer == NULL)
4131 return NULL;
4132 return p2p->go_neg_peer->info.p2p_device_addr;
4133 }
4134
4135
4136 const struct p2p_peer_info *
4137 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4138 {
4139 struct p2p_device *dev;
4140
4141 if (addr) {
4142 dev = p2p_get_device(p2p, addr);
4143 if (!dev)
4144 return NULL;
4145
4146 if (!next) {
4147 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4148 return NULL;
4149
4150 return &dev->info;
4151 } else {
4152 do {
4153 dev = dl_list_first(&dev->list,
4154 struct p2p_device,
4155 list);
4156 if (&dev->list == &p2p->devices)
4157 return NULL;
4158 } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4159 }
4160 } else {
4161 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4162 if (!dev)
4163 return NULL;
4164 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4165 dev = dl_list_first(&dev->list,
4166 struct p2p_device,
4167 list);
4168 if (&dev->list == &p2p->devices)
4169 return NULL;
4170 }
4171 }
4172
4173 return &dev->info;
4174 }
4175
4176
4177 int p2p_in_progress(struct p2p_data *p2p)
4178 {
4179 if (p2p == NULL)
4180 return 0;
4181 if (p2p->state == P2P_SEARCH || p2p->state == P2P_SEARCH_WHEN_READY ||
4182 p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY)
4183 return 2;
4184 return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
4185 }
4186
4187
4188 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
4189 u8 client_timeout)
4190 {
4191 if (p2p) {
4192 p2p->go_timeout = go_timeout;
4193 p2p->client_timeout = client_timeout;
4194 }
4195 }
4196
4197
4198 void p2p_increase_search_delay(struct p2p_data *p2p, unsigned int delay)
4199 {
4200 if (p2p && p2p->search_delay < delay)
4201 p2p->search_delay = delay;
4202 }
4203
4204
4205 #ifdef CONFIG_WIFI_DISPLAY
4206
4207 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
4208 {
4209 size_t g;
4210 struct p2p_group *group;
4211
4212 for (g = 0; g < p2p->num_groups; g++) {
4213 group = p2p->groups[g];
4214 p2p_group_force_beacon_update_ies(group);
4215 }
4216 }
4217
4218
4219 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
4220 {
4221 wpabuf_free(p2p->wfd_ie_beacon);
4222 p2p->wfd_ie_beacon = ie;
4223 p2p_update_wfd_ie_groups(p2p);
4224 return 0;
4225 }
4226
4227
4228 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
4229 {
4230 wpabuf_free(p2p->wfd_ie_probe_req);
4231 p2p->wfd_ie_probe_req = ie;
4232 return 0;
4233 }
4234
4235
4236 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
4237 {
4238 wpabuf_free(p2p->wfd_ie_probe_resp);
4239 p2p->wfd_ie_probe_resp = ie;
4240 p2p_update_wfd_ie_groups(p2p);
4241 return 0;
4242 }
4243
4244
4245 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
4246 {
4247 wpabuf_free(p2p->wfd_ie_assoc_req);
4248 p2p->wfd_ie_assoc_req = ie;
4249 return 0;
4250 }
4251
4252
4253 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
4254 {
4255 wpabuf_free(p2p->wfd_ie_invitation);
4256 p2p->wfd_ie_invitation = ie;
4257 return 0;
4258 }
4259
4260
4261 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
4262 {
4263 wpabuf_free(p2p->wfd_ie_prov_disc_req);
4264 p2p->wfd_ie_prov_disc_req = ie;
4265 return 0;
4266 }
4267
4268
4269 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
4270 {
4271 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
4272 p2p->wfd_ie_prov_disc_resp = ie;
4273 return 0;
4274 }
4275
4276
4277 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
4278 {
4279 wpabuf_free(p2p->wfd_ie_go_neg);
4280 p2p->wfd_ie_go_neg = ie;
4281 return 0;
4282 }
4283
4284
4285 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
4286 {
4287 wpabuf_free(p2p->wfd_dev_info);
4288 if (elem) {
4289 p2p->wfd_dev_info = wpabuf_dup(elem);
4290 if (p2p->wfd_dev_info == NULL)
4291 return -1;
4292 } else
4293 p2p->wfd_dev_info = NULL;
4294
4295 return 0;
4296 }
4297
4298
4299 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
4300 {
4301 wpabuf_free(p2p->wfd_assoc_bssid);
4302 if (elem) {
4303 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
4304 if (p2p->wfd_assoc_bssid == NULL)
4305 return -1;
4306 } else
4307 p2p->wfd_assoc_bssid = NULL;
4308
4309 return 0;
4310 }
4311
4312
4313 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
4314 const struct wpabuf *elem)
4315 {
4316 wpabuf_free(p2p->wfd_coupled_sink_info);
4317 if (elem) {
4318 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
4319 if (p2p->wfd_coupled_sink_info == NULL)
4320 return -1;
4321 } else
4322 p2p->wfd_coupled_sink_info = NULL;
4323
4324 return 0;
4325 }
4326
4327 #endif /* CONFIG_WIFI_DISPLAY */
4328
4329
4330 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
4331 int max_disc_tu)
4332 {
4333 if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
4334 return -1;
4335
4336 p2p->min_disc_int = min_disc_int;
4337 p2p->max_disc_int = max_disc_int;
4338 p2p->max_disc_tu = max_disc_tu;
4339 p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
4340 min_disc_int, max_disc_int, max_disc_tu);
4341
4342 return 0;
4343 }
4344
4345
4346 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
4347 {
4348 va_list ap;
4349 char buf[500];
4350
4351 if (!p2p->cfg->debug_print)
4352 return;
4353
4354 va_start(ap, fmt);
4355 vsnprintf(buf, sizeof(buf), fmt, ap);
4356 buf[sizeof(buf) - 1] = '\0';
4357 va_end(ap);
4358 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
4359 }
4360
4361
4362 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
4363 {
4364 va_list ap;
4365 char buf[500];
4366
4367 if (!p2p->cfg->debug_print)
4368 return;
4369
4370 va_start(ap, fmt);
4371 vsnprintf(buf, sizeof(buf), fmt, ap);
4372 buf[sizeof(buf) - 1] = '\0';
4373 va_end(ap);
4374 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
4375 }
4376
4377
4378 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
4379 {
4380 va_list ap;
4381 char buf[500];
4382
4383 if (!p2p->cfg->debug_print)
4384 return;
4385
4386 va_start(ap, fmt);
4387 vsnprintf(buf, sizeof(buf), fmt, ap);
4388 buf[sizeof(buf) - 1] = '\0';
4389 va_end(ap);
4390 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
4391 }
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