]> git.ipfire.org Git - thirdparty/hostap.git/blob - src/p2p/p2p.c
projects / thirdparty / hostap.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
P2Ps: Clear existing value when peer stops sending adv_service_instance
[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/defs.h"
14 #include "common/ieee802_11_defs.h"
15 #include "common/ieee802_11_common.h"
16 #include "common/wpa_ctrl.h"
17 #include "crypto/sha256.h"
18 #include "crypto/crypto.h"
19 #include "wps/wps_i.h"
20 #include "p2p_i.h"
21 #include "p2p.h"
22
23
24 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx);
25 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev);
26 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
27 const u8 *sa, const u8 *data, size_t len,
28 int rx_freq);
29 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
30 const u8 *sa, const u8 *data,
31 size_t len);
32 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx);
33 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx);
34
35
36 /*
37 * p2p_scan recovery timeout
38 *
39 * Many drivers are using 30 second timeout on scan results. Allow a bit larger
40 * timeout for this to avoid hitting P2P timeout unnecessarily.
41 */
42 #define P2P_SCAN_TIMEOUT 35
43
44 /**
45 * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer
46 * entries will be removed
47 */
48 #ifndef P2P_PEER_EXPIRATION_AGE
49 #define P2P_PEER_EXPIRATION_AGE 60
50 #endif /* P2P_PEER_EXPIRATION_AGE */
51
52
53 void p2p_expire_peers(struct p2p_data *p2p)
54 {
55 struct p2p_device *dev, *n;
56 struct os_reltime now;
57 size_t i;
58
59 os_get_reltime(&now);
60 dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
61 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec)
62 continue;
63
64 if (dev == p2p->go_neg_peer) {
65 /*
66 * GO Negotiation is in progress with the peer, so
67 * don't expire the peer entry until GO Negotiation
68 * fails or times out.
69 */
70 continue;
71 }
72
73 if (p2p->cfg->go_connected &&
74 p2p->cfg->go_connected(p2p->cfg->cb_ctx,
75 dev->info.p2p_device_addr)) {
76 /*
77 * We are connected as a client to a group in which the
78 * peer is the GO, so do not expire the peer entry.
79 */
80 os_get_reltime(&dev->last_seen);
81 continue;
82 }
83
84 for (i = 0; i < p2p->num_groups; i++) {
85 if (p2p_group_is_client_connected(
86 p2p->groups[i], dev->info.p2p_device_addr))
87 break;
88 }
89 if (i < p2p->num_groups) {
90 /*
91 * The peer is connected as a client in a group where
92 * we are the GO, so do not expire the peer entry.
93 */
94 os_get_reltime(&dev->last_seen);
95 continue;
96 }
97
98 p2p_dbg(p2p, "Expiring old peer entry " MACSTR,
99 MAC2STR(dev->info.p2p_device_addr));
100 dl_list_del(&dev->list);
101 p2p_device_free(p2p, dev);
102 }
103 }
104
105
106 static const char * p2p_state_txt(int state)
107 {
108 switch (state) {
109 case P2P_IDLE:
110 return "IDLE";
111 case P2P_SEARCH:
112 return "SEARCH";
113 case P2P_CONNECT:
114 return "CONNECT";
115 case P2P_CONNECT_LISTEN:
116 return "CONNECT_LISTEN";
117 case P2P_GO_NEG:
118 return "GO_NEG";
119 case P2P_LISTEN_ONLY:
120 return "LISTEN_ONLY";
121 case P2P_WAIT_PEER_CONNECT:
122 return "WAIT_PEER_CONNECT";
123 case P2P_WAIT_PEER_IDLE:
124 return "WAIT_PEER_IDLE";
125 case P2P_SD_DURING_FIND:
126 return "SD_DURING_FIND";
127 case P2P_PROVISIONING:
128 return "PROVISIONING";
129 case P2P_PD_DURING_FIND:
130 return "PD_DURING_FIND";
131 case P2P_INVITE:
132 return "INVITE";
133 case P2P_INVITE_LISTEN:
134 return "INVITE_LISTEN";
135 default:
136 return "?";
137 }
138 }
139
140
141 const char * p2p_get_state_txt(struct p2p_data *p2p)
142 {
143 return p2p_state_txt(p2p->state);
144 }
145
146
147 struct p2ps_advertisement * p2p_get_p2ps_adv_list(struct p2p_data *p2p)
148 {
149 return p2p ? p2p->p2ps_adv_list : NULL;
150 }
151
152
153 void p2p_set_intended_addr(struct p2p_data *p2p, const u8 *intended_addr)
154 {
155 if (p2p && intended_addr)
156 os_memcpy(p2p->intended_addr, intended_addr, ETH_ALEN);
157 }
158
159
160 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr)
161 {
162 struct p2p_device *dev = NULL;
163
164 if (!addr || !p2p)
165 return 0;
166
167 dev = p2p_get_device(p2p, addr);
168 if (dev)
169 return dev->wps_prov_info;
170 else
171 return 0;
172 }
173
174
175 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr)
176 {
177 struct p2p_device *dev = NULL;
178
179 if (!addr || !p2p)
180 return;
181
182 dev = p2p_get_device(p2p, addr);
183 if (dev)
184 dev->wps_prov_info = 0;
185 }
186
187
188 void p2p_set_state(struct p2p_data *p2p, int new_state)
189 {
190 p2p_dbg(p2p, "State %s -> %s",
191 p2p_state_txt(p2p->state), p2p_state_txt(new_state));
192 p2p->state = new_state;
193
194 if (new_state == P2P_IDLE && p2p->pending_channel) {
195 p2p_dbg(p2p, "Apply change in listen channel");
196 p2p->cfg->reg_class = p2p->pending_reg_class;
197 p2p->cfg->channel = p2p->pending_channel;
198 p2p->pending_reg_class = 0;
199 p2p->pending_channel = 0;
200 }
201 }
202
203
204 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
205 {
206 p2p_dbg(p2p, "Set timeout (state=%s): %u.%06u sec",
207 p2p_state_txt(p2p->state), sec, usec);
208 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
209 eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
210 }
211
212
213 void p2p_clear_timeout(struct p2p_data *p2p)
214 {
215 p2p_dbg(p2p, "Clear timeout (state=%s)", p2p_state_txt(p2p->state));
216 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
217 }
218
219
220 void p2p_go_neg_failed(struct p2p_data *p2p, int status)
221 {
222 struct p2p_go_neg_results res;
223 struct p2p_device *peer = p2p->go_neg_peer;
224
225 if (!peer)
226 return;
227
228 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
229 if (p2p->state != P2P_SEARCH) {
230 /*
231 * Clear timeouts related to GO Negotiation if no new p2p_find
232 * has been started.
233 */
234 p2p_clear_timeout(p2p);
235 p2p_set_state(p2p, P2P_IDLE);
236 }
237
238 peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
239 peer->wps_method = WPS_NOT_READY;
240 peer->oob_pw_id = 0;
241 wpabuf_free(peer->go_neg_conf);
242 peer->go_neg_conf = NULL;
243 p2p->go_neg_peer = NULL;
244
245 os_memset(&res, 0, sizeof(res));
246 res.status = status;
247 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
248 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
249 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
250 }
251
252
253 static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc)
254 {
255 unsigned int r, tu;
256 int freq;
257 struct wpabuf *ies;
258
259 p2p_dbg(p2p, "Starting short listen state (state=%s)",
260 p2p_state_txt(p2p->state));
261
262 if (p2p->pending_listen_freq) {
263 /* We have a pending p2p_listen request */
264 p2p_dbg(p2p, "p2p_listen command pending already");
265 return;
266 }
267
268 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
269 if (freq < 0) {
270 p2p_dbg(p2p, "Unknown regulatory class/channel");
271 return;
272 }
273
274 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
275 r = 0;
276 tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
277 p2p->min_disc_int) * 100;
278 if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu)
279 tu = p2p->max_disc_tu;
280 if (!dev_disc && tu < 100)
281 tu = 100; /* Need to wait in non-device discovery use cases */
282 if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen)
283 tu = p2p->cfg->max_listen * 1000 / 1024;
284
285 if (tu == 0) {
286 p2p_dbg(p2p, "Skip listen state since duration was 0 TU");
287 p2p_set_timeout(p2p, 0, 0);
288 return;
289 }
290
291 ies = p2p_build_probe_resp_ies(p2p, NULL, 0);
292 if (ies == NULL)
293 return;
294
295 p2p->pending_listen_freq = freq;
296 p2p->pending_listen_sec = 0;
297 p2p->pending_listen_usec = 1024 * tu;
298
299 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
300 ies) < 0) {
301 p2p_dbg(p2p, "Failed to start listen mode");
302 p2p->pending_listen_freq = 0;
303 }
304 wpabuf_free(ies);
305 }
306
307
308 int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
309 {
310 int freq;
311 struct wpabuf *ies;
312
313 p2p_dbg(p2p, "Going to listen(only) state");
314
315 if (p2p->pending_listen_freq) {
316 /* We have a pending p2p_listen request */
317 p2p_dbg(p2p, "p2p_listen command pending already");
318 return -1;
319 }
320
321 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
322 if (freq < 0) {
323 p2p_dbg(p2p, "Unknown regulatory class/channel");
324 return -1;
325 }
326
327 p2p->pending_listen_sec = timeout / 1000;
328 p2p->pending_listen_usec = (timeout % 1000) * 1000;
329
330 if (p2p->p2p_scan_running) {
331 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) {
332 p2p_dbg(p2p, "p2p_scan running - connect is already pending - skip listen");
333 return 0;
334 }
335 p2p_dbg(p2p, "p2p_scan running - delay start of listen state");
336 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
337 return 0;
338 }
339
340 ies = p2p_build_probe_resp_ies(p2p, NULL, 0);
341 if (ies == NULL)
342 return -1;
343
344 p2p->pending_listen_freq = freq;
345
346 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
347 p2p_dbg(p2p, "Failed to start listen mode");
348 p2p->pending_listen_freq = 0;
349 wpabuf_free(ies);
350 return -1;
351 }
352 wpabuf_free(ies);
353
354 p2p_set_state(p2p, P2P_LISTEN_ONLY);
355
356 return 0;
357 }
358
359
360 static void p2p_device_clear_reported(struct p2p_data *p2p)
361 {
362 struct p2p_device *dev;
363 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
364 dev->flags &= ~P2P_DEV_REPORTED;
365 dev->sd_reqs = 0;
366 }
367 }
368
369
370 /**
371 * p2p_get_device - Fetch a peer entry
372 * @p2p: P2P module context from p2p_init()
373 * @addr: P2P Device Address of the peer
374 * Returns: Pointer to the device entry or %NULL if not found
375 */
376 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
377 {
378 struct p2p_device *dev;
379 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
380 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
381 return dev;
382 }
383 return NULL;
384 }
385
386
387 /**
388 * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
389 * @p2p: P2P module context from p2p_init()
390 * @addr: P2P Interface Address of the peer
391 * Returns: Pointer to the device entry or %NULL if not found
392 */
393 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
394 const u8 *addr)
395 {
396 struct p2p_device *dev;
397 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
398 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
399 return dev;
400 }
401 return NULL;
402 }
403
404
405 /**
406 * p2p_create_device - Create a peer entry
407 * @p2p: P2P module context from p2p_init()
408 * @addr: P2P Device Address of the peer
409 * Returns: Pointer to the device entry or %NULL on failure
410 *
411 * If there is already an entry for the peer, it will be returned instead of
412 * creating a new one.
413 */
414 static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
415 const u8 *addr)
416 {
417 struct p2p_device *dev, *oldest = NULL;
418 size_t count = 0;
419
420 dev = p2p_get_device(p2p, addr);
421 if (dev)
422 return dev;
423
424 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
425 count++;
426 if (oldest == NULL ||
427 os_reltime_before(&dev->last_seen, &oldest->last_seen))
428 oldest = dev;
429 }
430 if (count + 1 > p2p->cfg->max_peers && oldest) {
431 p2p_dbg(p2p, "Remove oldest peer entry to make room for a new peer");
432 dl_list_del(&oldest->list);
433 p2p_device_free(p2p, oldest);
434 }
435
436 dev = os_zalloc(sizeof(*dev));
437 if (dev == NULL)
438 return NULL;
439 dl_list_add(&p2p->devices, &dev->list);
440 os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
441
442 return dev;
443 }
444
445
446 static void p2p_copy_client_info(struct p2p_device *dev,
447 struct p2p_client_info *cli)
448 {
449 p2p_copy_filter_devname(dev->info.device_name,
450 sizeof(dev->info.device_name),
451 cli->dev_name, cli->dev_name_len);
452 dev->info.dev_capab = cli->dev_capab;
453 dev->info.config_methods = cli->config_methods;
454 os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
455 dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
456 os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
457 dev->info.wps_sec_dev_type_list_len);
458 }
459
460
461 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
462 const u8 *go_interface_addr, int freq,
463 const u8 *gi, size_t gi_len,
464 struct os_reltime *rx_time)
465 {
466 struct p2p_group_info info;
467 size_t c;
468 struct p2p_device *dev;
469
470 if (gi == NULL)
471 return 0;
472
473 if (p2p_group_info_parse(gi, gi_len, &info) < 0)
474 return -1;
475
476 /*
477 * Clear old data for this group; if the devices are still in the
478 * group, the information will be restored in the loop following this.
479 */
480 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
481 if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
482 ETH_ALEN) == 0) {
483 os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
484 os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
485 }
486 }
487
488 for (c = 0; c < info.num_clients; c++) {
489 struct p2p_client_info *cli = &info.client[c];
490 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
491 ETH_ALEN) == 0)
492 continue; /* ignore our own entry */
493 dev = p2p_get_device(p2p, cli->p2p_device_addr);
494 if (dev) {
495 if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
496 P2P_DEV_PROBE_REQ_ONLY)) {
497 /*
498 * Update information since we have not
499 * received this directly from the client.
500 */
501 p2p_copy_client_info(dev, cli);
502 } else {
503 /*
504 * Need to update P2P Client Discoverability
505 * flag since it is valid only in P2P Group
506 * Info attribute.
507 */
508 dev->info.dev_capab &=
509 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
510 dev->info.dev_capab |=
511 cli->dev_capab &
512 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
513 }
514 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
515 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
516 }
517 } else {
518 dev = p2p_create_device(p2p, cli->p2p_device_addr);
519 if (dev == NULL)
520 continue;
521 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
522 p2p_copy_client_info(dev, cli);
523 dev->oper_freq = freq;
524 p2p->cfg->dev_found(p2p->cfg->cb_ctx,
525 dev->info.p2p_device_addr,
526 &dev->info, 1);
527 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
528 }
529
530 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
531 ETH_ALEN);
532 os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
533 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
534 os_memcpy(dev->member_in_go_iface, go_interface_addr,
535 ETH_ALEN);
536 dev->flags |= P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT;
537 }
538
539 return 0;
540 }
541
542
543 static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev,
544 int probe_req, const struct p2p_message *msg)
545 {
546 os_memcpy(dev->info.device_name, msg->device_name,
547 sizeof(dev->info.device_name));
548
549 if (msg->manufacturer &&
550 msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
551 os_memset(dev->info.manufacturer, 0,
552 sizeof(dev->info.manufacturer));
553 os_memcpy(dev->info.manufacturer, msg->manufacturer,
554 msg->manufacturer_len);
555 }
556
557 if (msg->model_name &&
558 msg->model_name_len < sizeof(dev->info.model_name)) {
559 os_memset(dev->info.model_name, 0,
560 sizeof(dev->info.model_name));
561 os_memcpy(dev->info.model_name, msg->model_name,
562 msg->model_name_len);
563 }
564
565 if (msg->model_number &&
566 msg->model_number_len < sizeof(dev->info.model_number)) {
567 os_memset(dev->info.model_number, 0,
568 sizeof(dev->info.model_number));
569 os_memcpy(dev->info.model_number, msg->model_number,
570 msg->model_number_len);
571 }
572
573 if (msg->serial_number &&
574 msg->serial_number_len < sizeof(dev->info.serial_number)) {
575 os_memset(dev->info.serial_number, 0,
576 sizeof(dev->info.serial_number));
577 os_memcpy(dev->info.serial_number, msg->serial_number,
578 msg->serial_number_len);
579 }
580
581 if (msg->pri_dev_type)
582 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
583 sizeof(dev->info.pri_dev_type));
584 else if (msg->wps_pri_dev_type)
585 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
586 sizeof(dev->info.pri_dev_type));
587
588 if (msg->wps_sec_dev_type_list) {
589 os_memcpy(dev->info.wps_sec_dev_type_list,
590 msg->wps_sec_dev_type_list,
591 msg->wps_sec_dev_type_list_len);
592 dev->info.wps_sec_dev_type_list_len =
593 msg->wps_sec_dev_type_list_len;
594 }
595
596 if (msg->capability) {
597 /*
598 * P2P Client Discoverability bit is reserved in all frames
599 * that use this function, so do not change its value here.
600 */
601 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
602 dev->info.dev_capab |= msg->capability[0] &
603 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
604 dev->info.group_capab = msg->capability[1];
605 }
606
607 if (msg->ext_listen_timing) {
608 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
609 dev->ext_listen_interval =
610 WPA_GET_LE16(msg->ext_listen_timing + 2);
611 }
612
613 if (!probe_req) {
614 u16 new_config_methods;
615 new_config_methods = msg->config_methods ?
616 msg->config_methods : msg->wps_config_methods;
617 if (new_config_methods &&
618 dev->info.config_methods != new_config_methods) {
619 p2p_dbg(p2p, "Update peer " MACSTR
620 " config_methods 0x%x -> 0x%x",
621 MAC2STR(dev->info.p2p_device_addr),
622 dev->info.config_methods,
623 new_config_methods);
624 dev->info.config_methods = new_config_methods;
625 }
626 }
627 }
628
629
630 static void p2p_update_peer_vendor_elems(struct p2p_device *dev, const u8 *ies,
631 size_t ies_len)
632 {
633 const u8 *pos, *end;
634 u8 id, len;
635
636 wpabuf_free(dev->info.vendor_elems);
637 dev->info.vendor_elems = NULL;
638
639 end = ies + ies_len;
640
641 for (pos = ies; end - pos > 1; pos += len) {
642 id = *pos++;
643 len = *pos++;
644
645 if (len > end - pos)
646 break;
647
648 if (id != WLAN_EID_VENDOR_SPECIFIC || len < 3)
649 continue;
650
651 if (len >= 4) {
652 u32 type = WPA_GET_BE32(pos);
653
654 if (type == WPA_IE_VENDOR_TYPE ||
655 type == WMM_IE_VENDOR_TYPE ||
656 type == WPS_IE_VENDOR_TYPE ||
657 type == P2P_IE_VENDOR_TYPE ||
658 type == WFD_IE_VENDOR_TYPE)
659 continue;
660 }
661
662 /* Unknown vendor element - make raw IE data available */
663 if (wpabuf_resize(&dev->info.vendor_elems, 2 + len) < 0)
664 break;
665 wpabuf_put_data(dev->info.vendor_elems, pos - 2, 2 + len);
666 }
667 }
668
669
670 static int p2p_compare_wfd_info(struct p2p_device *dev,
671 const struct p2p_message *msg)
672 {
673 if (dev->info.wfd_subelems && msg->wfd_subelems) {
674 if (dev->info.wfd_subelems->used != msg->wfd_subelems->used)
675 return 1;
676
677 return os_memcmp(dev->info.wfd_subelems->buf,
678 msg->wfd_subelems->buf,
679 dev->info.wfd_subelems->used);
680 }
681 if (dev->info.wfd_subelems || msg->wfd_subelems)
682 return 1;
683
684 return 0;
685 }
686
687
688 /**
689 * p2p_add_device - Add peer entries based on scan results or P2P frames
690 * @p2p: P2P module context from p2p_init()
691 * @addr: Source address of Beacon or Probe Response frame (may be either
692 * P2P Device Address or P2P Interface Address)
693 * @level: Signal level (signal strength of the received frame from the peer)
694 * @freq: Frequency on which the Beacon or Probe Response frame was received
695 * @rx_time: Time when the result was received
696 * @ies: IEs from the Beacon or Probe Response frame
697 * @ies_len: Length of ies buffer in octets
698 * @scan_res: Whether this was based on scan results
699 * Returns: 0 on success, -1 on failure
700 *
701 * If the scan result is for a GO, the clients in the group will also be added
702 * to the peer table. This function can also be used with some other frames
703 * like Provision Discovery Request that contains P2P Capability and P2P Device
704 * Info attributes.
705 */
706 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
707 struct os_reltime *rx_time, int level, const u8 *ies,
708 size_t ies_len, int scan_res)
709 {
710 struct p2p_device *dev;
711 struct p2p_message msg;
712 const u8 *p2p_dev_addr;
713 int wfd_changed;
714 int i;
715 struct os_reltime time_now;
716
717 os_memset(&msg, 0, sizeof(msg));
718 if (p2p_parse_ies(ies, ies_len, &msg)) {
719 p2p_dbg(p2p, "Failed to parse P2P IE for a device entry");
720 p2p_parse_free(&msg);
721 return -1;
722 }
723
724 if (msg.p2p_device_addr)
725 p2p_dev_addr = msg.p2p_device_addr;
726 else if (msg.device_id)
727 p2p_dev_addr = msg.device_id;
728 else {
729 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
730 p2p_parse_free(&msg);
731 return -1;
732 }
733
734 if (!is_zero_ether_addr(p2p->peer_filter) &&
735 os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
736 p2p_dbg(p2p, "Do not add peer filter for " MACSTR
737 " due to peer filter", MAC2STR(p2p_dev_addr));
738 p2p_parse_free(&msg);
739 return 0;
740 }
741
742 dev = p2p_create_device(p2p, p2p_dev_addr);
743 if (dev == NULL) {
744 p2p_parse_free(&msg);
745 return -1;
746 }
747
748 if (rx_time == NULL) {
749 os_get_reltime(&time_now);
750 rx_time = &time_now;
751 }
752
753 /*
754 * Update the device entry only if the new peer
755 * entry is newer than the one previously stored, or if
756 * the device was previously seen as a P2P Client in a group
757 * and the new entry isn't older than a threshold.
758 */
759 if (dev->last_seen.sec > 0 &&
760 os_reltime_before(rx_time, &dev->last_seen) &&
761 (!(dev->flags & P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT) ||
762 os_reltime_expired(&dev->last_seen, rx_time,
763 P2P_DEV_GROUP_CLIENT_RESP_THRESHOLD))) {
764 p2p_dbg(p2p,
765 "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u flags=0x%x)",
766 (unsigned int) rx_time->sec,
767 (unsigned int) rx_time->usec,
768 (unsigned int) dev->last_seen.sec,
769 (unsigned int) dev->last_seen.usec,
770 dev->flags);
771 p2p_parse_free(&msg);
772 return -1;
773 }
774
775 os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
776
777 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY |
778 P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT);
779
780 if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
781 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
782 if (msg.ssid &&
783 msg.ssid[1] <= sizeof(dev->oper_ssid) &&
784 (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
785 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
786 != 0)) {
787 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
788 dev->oper_ssid_len = msg.ssid[1];
789 }
790
791 wpabuf_free(dev->info.p2ps_instance);
792 dev->info.p2ps_instance = NULL;
793 if (msg.adv_service_instance && msg.adv_service_instance_len)
794 dev->info.p2ps_instance = wpabuf_alloc_copy(
795 msg.adv_service_instance, msg.adv_service_instance_len);
796
797 if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
798 *msg.ds_params >= 1 && *msg.ds_params <= 14) {
799 int ds_freq;
800 if (*msg.ds_params == 14)
801 ds_freq = 2484;
802 else
803 ds_freq = 2407 + *msg.ds_params * 5;
804 if (freq != ds_freq) {
805 p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz",
806 freq, ds_freq);
807 freq = ds_freq;
808 }
809 }
810
811 if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
812 p2p_dbg(p2p, "Update Listen frequency based on scan results ("
813 MACSTR " %d -> %d MHz (DS param %d)",
814 MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
815 freq, msg.ds_params ? *msg.ds_params : -1);
816 }
817 if (scan_res) {
818 dev->listen_freq = freq;
819 if (msg.group_info)
820 dev->oper_freq = freq;
821 }
822 dev->info.level = level;
823
824 p2p_copy_wps_info(p2p, dev, 0, &msg);
825
826 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
827 wpabuf_free(dev->info.wps_vendor_ext[i]);
828 dev->info.wps_vendor_ext[i] = NULL;
829 }
830
831 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
832 if (msg.wps_vendor_ext[i] == NULL)
833 break;
834 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
835 msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
836 if (dev->info.wps_vendor_ext[i] == NULL)
837 break;
838 }
839
840 wfd_changed = p2p_compare_wfd_info(dev, &msg);
841
842 if (msg.wfd_subelems) {
843 wpabuf_free(dev->info.wfd_subelems);
844 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
845 }
846
847 if (scan_res) {
848 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
849 msg.group_info, msg.group_info_len,
850 rx_time);
851 }
852
853 p2p_parse_free(&msg);
854
855 p2p_update_peer_vendor_elems(dev, ies, ies_len);
856
857 if (dev->flags & P2P_DEV_REPORTED && !wfd_changed &&
858 (!msg.adv_service_instance ||
859 (dev->flags & P2P_DEV_P2PS_REPORTED)))
860 return 0;
861
862 p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)",
863 freq, (unsigned int) rx_time->sec,
864 (unsigned int) rx_time->usec);
865 if (dev->flags & P2P_DEV_USER_REJECTED) {
866 p2p_dbg(p2p, "Do not report rejected device");
867 return 0;
868 }
869
870 if (dev->info.config_methods == 0 &&
871 (freq == 2412 || freq == 2437 || freq == 2462)) {
872 /*
873 * If we have only seen a Beacon frame from a GO, we do not yet
874 * know what WPS config methods it supports. Since some
875 * applications use config_methods value from P2P-DEVICE-FOUND
876 * events, postpone reporting this peer until we've fully
877 * discovered its capabilities.
878 *
879 * At least for now, do this only if the peer was detected on
880 * one of the social channels since that peer can be easily be
881 * found again and there are no limitations of having to use
882 * passive scan on this channels, so this can be done through
883 * Probe Response frame that includes the config_methods
884 * information.
885 */
886 p2p_dbg(p2p, "Do not report peer " MACSTR
887 " with unknown config methods", MAC2STR(addr));
888 return 0;
889 }
890
891 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
892 !(dev->flags & P2P_DEV_REPORTED_ONCE));
893 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
894
895 if (msg.adv_service_instance)
896 dev->flags |= P2P_DEV_P2PS_REPORTED;
897
898 return 0;
899 }
900
901
902 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
903 {
904 int i;
905
906 if (p2p->go_neg_peer == dev) {
907 /*
908 * If GO Negotiation is in progress, report that it has failed.
909 */
910 p2p_go_neg_failed(p2p, -1);
911 }
912 if (p2p->invite_peer == dev)
913 p2p->invite_peer = NULL;
914 if (p2p->sd_peer == dev)
915 p2p->sd_peer = NULL;
916 if (p2p->pending_client_disc_go == dev)
917 p2p->pending_client_disc_go = NULL;
918
919 /* dev_lost() device, but only if it was previously dev_found() */
920 if (dev->flags & P2P_DEV_REPORTED_ONCE)
921 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
922 dev->info.p2p_device_addr);
923
924 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
925 wpabuf_free(dev->info.wps_vendor_ext[i]);
926 dev->info.wps_vendor_ext[i] = NULL;
927 }
928
929 wpabuf_free(dev->info.wfd_subelems);
930 wpabuf_free(dev->info.vendor_elems);
931 wpabuf_free(dev->go_neg_conf);
932 wpabuf_free(dev->info.p2ps_instance);
933
934 os_free(dev);
935 }
936
937
938 static int p2p_get_next_prog_freq(struct p2p_data *p2p)
939 {
940 struct p2p_channels *c;
941 struct p2p_reg_class *cla;
942 size_t cl, ch;
943 int found = 0;
944 u8 reg_class;
945 u8 channel;
946 int freq;
947
948 c = &p2p->cfg->channels;
949 for (cl = 0; cl < c->reg_classes; cl++) {
950 cla = &c->reg_class[cl];
951 if (cla->reg_class != p2p->last_prog_scan_class)
952 continue;
953 for (ch = 0; ch < cla->channels; ch++) {
954 if (cla->channel[ch] == p2p->last_prog_scan_chan) {
955 found = 1;
956 break;
957 }
958 }
959 if (found)
960 break;
961 }
962
963 if (!found) {
964 /* Start from beginning */
965 reg_class = c->reg_class[0].reg_class;
966 channel = c->reg_class[0].channel[0];
967 } else {
968 /* Pick the next channel */
969 ch++;
970 if (ch == cla->channels) {
971 cl++;
972 if (cl == c->reg_classes)
973 cl = 0;
974 ch = 0;
975 }
976 reg_class = c->reg_class[cl].reg_class;
977 channel = c->reg_class[cl].channel[ch];
978 }
979
980 freq = p2p_channel_to_freq(reg_class, channel);
981 p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz",
982 reg_class, channel, freq);
983 p2p->last_prog_scan_class = reg_class;
984 p2p->last_prog_scan_chan = channel;
985
986 if (freq == 2412 || freq == 2437 || freq == 2462)
987 return 0; /* No need to add social channels */
988 return freq;
989 }
990
991
992 static void p2p_search(struct p2p_data *p2p)
993 {
994 int freq = 0;
995 enum p2p_scan_type type;
996 u16 pw_id = DEV_PW_DEFAULT;
997 int res;
998
999 if (p2p->drv_in_listen) {
1000 p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing");
1001 return;
1002 }
1003 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1004
1005 if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
1006 (freq = p2p_get_next_prog_freq(p2p)) > 0) {
1007 type = P2P_SCAN_SOCIAL_PLUS_ONE;
1008 p2p_dbg(p2p, "Starting search (+ freq %u)", freq);
1009 } else {
1010 type = P2P_SCAN_SOCIAL;
1011 p2p_dbg(p2p, "Starting search");
1012 }
1013
1014 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
1015 p2p->num_req_dev_types, p2p->req_dev_types,
1016 p2p->find_dev_id, pw_id);
1017 if (res < 0) {
1018 p2p_dbg(p2p, "Scan request schedule failed");
1019 p2p_continue_find(p2p);
1020 }
1021 }
1022
1023
1024 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
1025 {
1026 struct p2p_data *p2p = eloop_ctx;
1027 p2p_dbg(p2p, "Find timeout -> stop");
1028 p2p_stop_find(p2p);
1029 }
1030
1031
1032 void p2p_notify_scan_trigger_status(struct p2p_data *p2p, int status)
1033 {
1034 if (status != 0) {
1035 p2p_dbg(p2p, "Scan request failed");
1036 /* Do continue find even for the first p2p_find_scan */
1037 p2p_continue_find(p2p);
1038 } else {
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 }
1045 }
1046
1047
1048 static int p2p_run_after_scan(struct p2p_data *p2p)
1049 {
1050 struct p2p_device *dev;
1051 enum p2p_after_scan op;
1052
1053 if (p2p->after_scan_tx) {
1054 p2p->after_scan_tx_in_progress = 1;
1055 p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion");
1056 p2p->cfg->send_action(p2p->cfg->cb_ctx,
1057 p2p->after_scan_tx->freq,
1058 p2p->after_scan_tx->dst,
1059 p2p->after_scan_tx->src,
1060 p2p->after_scan_tx->bssid,
1061 (u8 *) (p2p->after_scan_tx + 1),
1062 p2p->after_scan_tx->len,
1063 p2p->after_scan_tx->wait_time);
1064 os_free(p2p->after_scan_tx);
1065 p2p->after_scan_tx = NULL;
1066 return 1;
1067 }
1068
1069 op = p2p->start_after_scan;
1070 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1071 switch (op) {
1072 case P2P_AFTER_SCAN_NOTHING:
1073 break;
1074 case P2P_AFTER_SCAN_LISTEN:
1075 p2p_dbg(p2p, "Start previously requested Listen state");
1076 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
1077 p2p->pending_listen_usec / 1000);
1078 return 1;
1079 case P2P_AFTER_SCAN_CONNECT:
1080 p2p_dbg(p2p, "Start previously requested connect with " MACSTR,
1081 MAC2STR(p2p->after_scan_peer));
1082 dev = p2p_get_device(p2p, p2p->after_scan_peer);
1083 if (dev == NULL) {
1084 p2p_dbg(p2p, "Peer not known anymore");
1085 break;
1086 }
1087 p2p_connect_send(p2p, dev);
1088 return 1;
1089 }
1090
1091 return 0;
1092 }
1093
1094
1095 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1096 {
1097 struct p2p_data *p2p = eloop_ctx;
1098 int running;
1099 p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running);
1100 running = p2p->p2p_scan_running;
1101 /* Make sure we recover from missed scan results callback */
1102 p2p->p2p_scan_running = 0;
1103
1104 if (running)
1105 p2p_run_after_scan(p2p);
1106 }
1107
1108
1109 static void p2p_free_req_dev_types(struct p2p_data *p2p)
1110 {
1111 p2p->num_req_dev_types = 0;
1112 os_free(p2p->req_dev_types);
1113 p2p->req_dev_types = NULL;
1114 }
1115
1116
1117 static int p2ps_gen_hash(struct p2p_data *p2p, const char *str, u8 *hash)
1118 {
1119 u8 buf[SHA256_MAC_LEN];
1120 char str_buf[256];
1121 const u8 *adv_array;
1122 size_t i, adv_len;
1123
1124 if (!str || !hash)
1125 return 0;
1126
1127 if (!str[0]) {
1128 os_memcpy(hash, p2p->wild_card_hash, P2PS_HASH_LEN);
1129 return 1;
1130 }
1131
1132 adv_array = (u8 *) str_buf;
1133 adv_len = os_strlen(str);
1134 if (adv_len >= sizeof(str_buf))
1135 return 0;
1136
1137 for (i = 0; i < adv_len; i++) {
1138 if (str[i] >= 'A' && str[i] <= 'Z')
1139 str_buf[i] = str[i] - 'A' + 'a';
1140 else
1141 str_buf[i] = str[i];
1142 }
1143
1144 if (sha256_vector(1, &adv_array, &adv_len, buf))
1145 return 0;
1146
1147 os_memcpy(hash, buf, P2PS_HASH_LEN);
1148 return 1;
1149 }
1150
1151
1152 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
1153 enum p2p_discovery_type type,
1154 unsigned int num_req_dev_types, const u8 *req_dev_types,
1155 const u8 *dev_id, unsigned int search_delay,
1156 u8 seek_count, const char **seek, int freq)
1157 {
1158 int res;
1159
1160 p2p_dbg(p2p, "Starting find (type=%d)", type);
1161 os_get_reltime(&p2p->find_start);
1162 if (p2p->p2p_scan_running) {
1163 p2p_dbg(p2p, "p2p_scan is already running");
1164 }
1165
1166 p2p_free_req_dev_types(p2p);
1167 if (req_dev_types && num_req_dev_types) {
1168 p2p->req_dev_types = os_malloc(num_req_dev_types *
1169 WPS_DEV_TYPE_LEN);
1170 if (p2p->req_dev_types == NULL)
1171 return -1;
1172 os_memcpy(p2p->req_dev_types, req_dev_types,
1173 num_req_dev_types * WPS_DEV_TYPE_LEN);
1174 p2p->num_req_dev_types = num_req_dev_types;
1175 }
1176
1177 if (dev_id) {
1178 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
1179 p2p->find_dev_id = p2p->find_dev_id_buf;
1180 } else
1181 p2p->find_dev_id = NULL;
1182
1183 if (seek_count == 0 || !seek) {
1184 /* Not an ASP search */
1185 p2p->p2ps_seek = 0;
1186 } else if (seek_count == 1 && seek && (!seek[0] || !seek[0][0])) {
1187 /*
1188 * An empty seek string means no hash values, but still an ASP
1189 * search.
1190 */
1191 p2p_dbg(p2p, "ASP search");
1192 p2p->p2ps_seek_count = 0;
1193 p2p->p2ps_seek = 1;
1194 } else if (seek && seek_count <= P2P_MAX_QUERY_HASH) {
1195 u8 buf[P2PS_HASH_LEN];
1196 int i, count = 0;
1197
1198 for (i = 0; i < seek_count; i++) {
1199 if (!p2ps_gen_hash(p2p, seek[i], buf))
1200 continue;
1201
1202 p2p_dbg(p2p, "Seek service %s hash " MACSTR,
1203 seek[i], MAC2STR(buf));
1204 os_memcpy(&p2p->p2ps_seek_hash[count * P2PS_HASH_LEN],
1205 buf, P2PS_HASH_LEN);
1206 count++;
1207 }
1208
1209 p2p->p2ps_seek_count = count;
1210 p2p->p2ps_seek = 1;
1211 } else {
1212 p2p->p2ps_seek_count = 0;
1213 p2p->p2ps_seek = 1;
1214 }
1215
1216 /* Special case to perform wildcard search */
1217 if (p2p->p2ps_seek_count == 0 && p2p->p2ps_seek) {
1218 p2p->p2ps_seek_count = 1;
1219 os_memcpy(&p2p->p2ps_seek_hash, p2p->wild_card_hash,
1220 P2PS_HASH_LEN);
1221 }
1222
1223 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1224 p2p_clear_timeout(p2p);
1225 if (p2p->pending_listen_freq) {
1226 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_find");
1227 p2p->pending_listen_freq = 0;
1228 }
1229 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1230 p2p->find_type = type;
1231 p2p_device_clear_reported(p2p);
1232 os_memset(p2p->sd_query_no_ack, 0, ETH_ALEN);
1233 p2p_set_state(p2p, P2P_SEARCH);
1234 p2p->search_delay = search_delay;
1235 p2p->in_search_delay = 0;
1236 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1237 p2p->last_p2p_find_timeout = timeout;
1238 if (timeout)
1239 eloop_register_timeout(timeout, 0, p2p_find_timeout,
1240 p2p, NULL);
1241 switch (type) {
1242 case P2P_FIND_START_WITH_FULL:
1243 if (freq > 0) {
1244 /*
1245 * Start with the specified channel and then move to
1246 * social channels only scans.
1247 */
1248 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx,
1249 P2P_SCAN_SPECIFIC, freq,
1250 p2p->num_req_dev_types,
1251 p2p->req_dev_types, dev_id,
1252 DEV_PW_DEFAULT);
1253 break;
1254 }
1255 /* fall through */
1256 case P2P_FIND_PROGRESSIVE:
1257 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1258 p2p->num_req_dev_types,
1259 p2p->req_dev_types, dev_id,
1260 DEV_PW_DEFAULT);
1261 break;
1262 case P2P_FIND_ONLY_SOCIAL:
1263 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1264 p2p->num_req_dev_types,
1265 p2p->req_dev_types, dev_id,
1266 DEV_PW_DEFAULT);
1267 break;
1268 default:
1269 return -1;
1270 }
1271
1272 if (res != 0 && p2p->p2p_scan_running) {
1273 p2p_dbg(p2p, "Failed to start p2p_scan - another p2p_scan was already running");
1274 /* wait for the previous p2p_scan to complete */
1275 res = 0; /* do not report failure */
1276 } else if (res != 0) {
1277 p2p_dbg(p2p, "Failed to start p2p_scan");
1278 p2p_set_state(p2p, P2P_IDLE);
1279 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1280 }
1281
1282 return res;
1283 }
1284
1285
1286 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1287 {
1288 p2p_dbg(p2p, "Stopping find");
1289 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1290 p2p_clear_timeout(p2p);
1291 if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND)
1292 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
1293
1294 p2p->p2ps_seek_count = 0;
1295
1296 p2p_set_state(p2p, P2P_IDLE);
1297 p2p_free_req_dev_types(p2p);
1298 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1299 if (p2p->go_neg_peer)
1300 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
1301 p2p->go_neg_peer = NULL;
1302 p2p->sd_peer = NULL;
1303 p2p->invite_peer = NULL;
1304 p2p_stop_listen_for_freq(p2p, freq);
1305 p2p->send_action_in_progress = 0;
1306 }
1307
1308
1309 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1310 {
1311 if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1312 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response");
1313 return;
1314 }
1315 if (p2p->in_listen) {
1316 p2p->in_listen = 0;
1317 p2p_clear_timeout(p2p);
1318 }
1319 if (p2p->drv_in_listen) {
1320 /*
1321 * The driver may not deliver callback to p2p_listen_end()
1322 * when the operation gets canceled, so clear the internal
1323 * variable that is tracking driver state.
1324 */
1325 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen);
1326 p2p->drv_in_listen = 0;
1327 }
1328 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1329 }
1330
1331
1332 void p2p_stop_listen(struct p2p_data *p2p)
1333 {
1334 if (p2p->state != P2P_LISTEN_ONLY) {
1335 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state.");
1336 return;
1337 }
1338
1339 p2p_stop_listen_for_freq(p2p, 0);
1340 p2p_set_state(p2p, P2P_IDLE);
1341 }
1342
1343
1344 void p2p_stop_find(struct p2p_data *p2p)
1345 {
1346 p2p->pending_listen_freq = 0;
1347 p2p_stop_find_for_freq(p2p, 0);
1348 }
1349
1350
1351 static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1352 unsigned int force_freq,
1353 unsigned int pref_freq, int go)
1354 {
1355 u8 op_class, op_channel;
1356 unsigned int freq = force_freq ? force_freq : pref_freq;
1357
1358 p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d",
1359 force_freq, pref_freq, go);
1360 if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) {
1361 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq);
1362 return -1;
1363 }
1364
1365 if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) &&
1366 (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class,
1367 op_channel))) {
1368 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P",
1369 freq, op_class, op_channel);
1370 return -1;
1371 }
1372
1373 p2p->op_reg_class = op_class;
1374 p2p->op_channel = op_channel;
1375
1376 if (force_freq) {
1377 p2p->channels.reg_classes = 1;
1378 p2p->channels.reg_class[0].channels = 1;
1379 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1380 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1381 } else {
1382 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1383 sizeof(struct p2p_channels));
1384 }
1385
1386 return 0;
1387 }
1388
1389
1390 static void p2p_prepare_channel_best(struct p2p_data *p2p)
1391 {
1392 u8 op_class, op_channel;
1393 const int op_classes_5ghz[] = { 124, 125, 115, 0 };
1394 const int op_classes_ht40[] = { 126, 127, 116, 117, 0 };
1395 const int op_classes_vht[] = { 128, 0 };
1396
1397 p2p_dbg(p2p, "Prepare channel best");
1398
1399 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1400 p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1401 p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1402 == 0) {
1403 p2p_dbg(p2p, "Select best overall channel as operating channel preference");
1404 p2p->op_reg_class = op_class;
1405 p2p->op_channel = op_channel;
1406 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1407 p2p_supported_freq(p2p, p2p->best_freq_5) &&
1408 p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1409 == 0) {
1410 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
1411 p2p->op_reg_class = op_class;
1412 p2p->op_channel = op_channel;
1413 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1414 p2p_supported_freq(p2p, p2p->best_freq_24) &&
1415 p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1416 &op_channel) == 0) {
1417 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
1418 p2p->op_reg_class = op_class;
1419 p2p->op_channel = op_channel;
1420 } else if (p2p->cfg->num_pref_chan > 0 &&
1421 p2p_channels_includes(&p2p->cfg->channels,
1422 p2p->cfg->pref_chan[0].op_class,
1423 p2p->cfg->pref_chan[0].chan)) {
1424 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference");
1425 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class;
1426 p2p->op_channel = p2p->cfg->pref_chan[0].chan;
1427 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht,
1428 &p2p->op_reg_class, &p2p->op_channel) ==
1429 0) {
1430 p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference",
1431 p2p->op_reg_class, p2p->op_channel);
1432 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40,
1433 &p2p->op_reg_class, &p2p->op_channel) ==
1434 0) {
1435 p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference",
1436 p2p->op_reg_class, p2p->op_channel);
1437 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz,
1438 &p2p->op_reg_class, &p2p->op_channel) ==
1439 0) {
1440 p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference",
1441 p2p->op_reg_class, p2p->op_channel);
1442 } else if (p2p_channels_includes(&p2p->cfg->channels,
1443 p2p->cfg->op_reg_class,
1444 p2p->cfg->op_channel)) {
1445 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference");
1446 p2p->op_reg_class = p2p->cfg->op_reg_class;
1447 p2p->op_channel = p2p->cfg->op_channel;
1448 } else if (p2p_channel_random_social(&p2p->cfg->channels,
1449 &p2p->op_reg_class,
1450 &p2p->op_channel) == 0) {
1451 p2p_dbg(p2p, "Select random available social channel (op_class %u channel %u) as operating channel preference",
1452 p2p->op_reg_class, p2p->op_channel);
1453 } else {
1454 /* Select any random available channel from the first available
1455 * operating class */
1456 p2p_channel_select(&p2p->cfg->channels, NULL,
1457 &p2p->op_reg_class,
1458 &p2p->op_channel);
1459 p2p_dbg(p2p, "Select random available channel %d from operating class %d as operating channel preference",
1460 p2p->op_channel, p2p->op_reg_class);
1461 }
1462
1463 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1464 sizeof(struct p2p_channels));
1465 }
1466
1467
1468 /**
1469 * p2p_prepare_channel - Select operating channel for GO Negotiation or P2PS PD
1470 * @p2p: P2P module context from p2p_init()
1471 * @dev: Selected peer device
1472 * @force_freq: Forced frequency in MHz or 0 if not forced
1473 * @pref_freq: Preferred frequency in MHz or 0 if no preference
1474 * @go: Whether the local end will be forced to be GO
1475 * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1476 *
1477 * This function is used to do initial operating channel selection for GO
1478 * Negotiation prior to having received peer information or for P2PS PD
1479 * signalling. The selected channel may be further optimized in
1480 * p2p_reselect_channel() once the peer information is available.
1481 */
1482 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
1483 unsigned int force_freq, unsigned int pref_freq, int go)
1484 {
1485 p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d",
1486 force_freq, pref_freq, go);
1487 if (force_freq || pref_freq) {
1488 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) <
1489 0)
1490 return -1;
1491 } else {
1492 p2p_prepare_channel_best(p2p);
1493 }
1494 p2p_channels_dump(p2p, "prepared channels", &p2p->channels);
1495 if (go)
1496 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq);
1497 else if (!force_freq)
1498 p2p_channels_union_inplace(&p2p->channels,
1499 &p2p->cfg->cli_channels);
1500 p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels);
1501
1502 p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
1503 p2p->op_reg_class, p2p->op_channel,
1504 force_freq ? " (forced)" : "");
1505
1506 if (force_freq)
1507 dev->flags |= P2P_DEV_FORCE_FREQ;
1508 else
1509 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1510
1511 return 0;
1512 }
1513
1514
1515 static void p2p_set_dev_persistent(struct p2p_device *dev,
1516 int persistent_group)
1517 {
1518 switch (persistent_group) {
1519 case 0:
1520 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1521 P2P_DEV_PREFER_PERSISTENT_RECONN);
1522 break;
1523 case 1:
1524 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1525 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1526 break;
1527 case 2:
1528 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1529 P2P_DEV_PREFER_PERSISTENT_RECONN;
1530 break;
1531 }
1532 }
1533
1534
1535 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1536 enum p2p_wps_method wps_method,
1537 int go_intent, const u8 *own_interface_addr,
1538 unsigned int force_freq, int persistent_group,
1539 const u8 *force_ssid, size_t force_ssid_len,
1540 int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id)
1541 {
1542 struct p2p_device *dev;
1543
1544 p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
1545 " GO Intent=%d Intended Interface Address=" MACSTR
1546 " wps_method=%d persistent_group=%d pd_before_go_neg=%d "
1547 "oob_pw_id=%u",
1548 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1549 wps_method, persistent_group, pd_before_go_neg, oob_pw_id);
1550
1551 dev = p2p_get_device(p2p, peer_addr);
1552 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1553 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
1554 MAC2STR(peer_addr));
1555 return -1;
1556 }
1557
1558 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq,
1559 go_intent == 15) < 0)
1560 return -1;
1561
1562 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1563 if (!(dev->info.dev_capab &
1564 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1565 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1566 " that is in a group and is not discoverable",
1567 MAC2STR(peer_addr));
1568 return -1;
1569 }
1570 if (dev->oper_freq <= 0) {
1571 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1572 " with incomplete information",
1573 MAC2STR(peer_addr));
1574 return -1;
1575 }
1576
1577 /*
1578 * First, try to connect directly. If the peer does not
1579 * acknowledge frames, assume it is sleeping and use device
1580 * discoverability via the GO at that point.
1581 */
1582 }
1583
1584 p2p->ssid_set = 0;
1585 if (force_ssid) {
1586 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1587 force_ssid, force_ssid_len);
1588 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1589 p2p->ssid_len = force_ssid_len;
1590 p2p->ssid_set = 1;
1591 }
1592
1593 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1594 dev->flags &= ~P2P_DEV_USER_REJECTED;
1595 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1596 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1597 if (pd_before_go_neg)
1598 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
1599 else {
1600 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
1601 /*
1602 * Assign dialog token and tie breaker here to use the same
1603 * values in each retry within the same GO Negotiation exchange.
1604 */
1605 dev->dialog_token++;
1606 if (dev->dialog_token == 0)
1607 dev->dialog_token = 1;
1608 dev->tie_breaker = p2p->next_tie_breaker;
1609 p2p->next_tie_breaker = !p2p->next_tie_breaker;
1610 }
1611 dev->connect_reqs = 0;
1612 dev->go_neg_req_sent = 0;
1613 dev->go_state = UNKNOWN_GO;
1614 p2p_set_dev_persistent(dev, persistent_group);
1615 p2p->go_intent = go_intent;
1616 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1617
1618 if (p2p->state != P2P_IDLE)
1619 p2p_stop_find(p2p);
1620
1621 if (p2p->after_scan_tx) {
1622 /*
1623 * We need to drop the pending frame to avoid issues with the
1624 * new GO Negotiation, e.g., when the pending frame was from a
1625 * previous attempt at starting a GO Negotiation.
1626 */
1627 p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion");
1628 os_free(p2p->after_scan_tx);
1629 p2p->after_scan_tx = NULL;
1630 }
1631
1632 dev->wps_method = wps_method;
1633 dev->oob_pw_id = oob_pw_id;
1634 dev->status = P2P_SC_SUCCESS;
1635
1636 if (p2p->p2p_scan_running) {
1637 p2p_dbg(p2p, "p2p_scan running - delay connect send");
1638 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1639 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1640 return 0;
1641 }
1642 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1643
1644 return p2p_connect_send(p2p, dev);
1645 }
1646
1647
1648 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1649 enum p2p_wps_method wps_method,
1650 int go_intent, const u8 *own_interface_addr,
1651 unsigned int force_freq, int persistent_group,
1652 const u8 *force_ssid, size_t force_ssid_len,
1653 unsigned int pref_freq, u16 oob_pw_id)
1654 {
1655 struct p2p_device *dev;
1656
1657 p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
1658 " GO Intent=%d Intended Interface Address=" MACSTR
1659 " wps_method=%d persistent_group=%d oob_pw_id=%u",
1660 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1661 wps_method, persistent_group, oob_pw_id);
1662
1663 dev = p2p_get_device(p2p, peer_addr);
1664 if (dev == NULL) {
1665 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
1666 MAC2STR(peer_addr));
1667 return -1;
1668 }
1669
1670 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent ==
1671 15) < 0)
1672 return -1;
1673
1674 p2p->ssid_set = 0;
1675 if (force_ssid) {
1676 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1677 force_ssid, force_ssid_len);
1678 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1679 p2p->ssid_len = force_ssid_len;
1680 p2p->ssid_set = 1;
1681 }
1682
1683 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1684 dev->flags &= ~P2P_DEV_USER_REJECTED;
1685 dev->go_neg_req_sent = 0;
1686 dev->go_state = UNKNOWN_GO;
1687 p2p_set_dev_persistent(dev, persistent_group);
1688 p2p->go_intent = go_intent;
1689 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1690
1691 dev->wps_method = wps_method;
1692 dev->oob_pw_id = oob_pw_id;
1693 dev->status = P2P_SC_SUCCESS;
1694
1695 return 0;
1696 }
1697
1698
1699 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1700 struct p2p_device *dev, struct p2p_message *msg)
1701 {
1702 os_get_reltime(&dev->last_seen);
1703
1704 p2p_copy_wps_info(p2p, dev, 0, msg);
1705
1706 if (msg->listen_channel) {
1707 int freq;
1708 freq = p2p_channel_to_freq(msg->listen_channel[3],
1709 msg->listen_channel[4]);
1710 if (freq < 0) {
1711 p2p_dbg(p2p, "Unknown peer Listen channel: "
1712 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1713 msg->listen_channel[0],
1714 msg->listen_channel[1],
1715 msg->listen_channel[2],
1716 msg->listen_channel[3],
1717 msg->listen_channel[4]);
1718 } else {
1719 p2p_dbg(p2p, "Update peer " MACSTR
1720 " Listen channel: %u -> %u MHz",
1721 MAC2STR(dev->info.p2p_device_addr),
1722 dev->listen_freq, freq);
1723 dev->listen_freq = freq;
1724 }
1725 }
1726
1727 if (msg->wfd_subelems) {
1728 wpabuf_free(dev->info.wfd_subelems);
1729 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1730 }
1731
1732 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1733 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1734 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
1735 } else {
1736 p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
1737 MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1738 "listen_freq=%d",
1739 MAC2STR(dev->info.p2p_device_addr),
1740 dev->info.dev_capab, dev->info.group_capab,
1741 dev->info.device_name, dev->listen_freq);
1742 }
1743
1744 dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1745
1746 if (dev->flags & P2P_DEV_USER_REJECTED) {
1747 p2p_dbg(p2p, "Do not report rejected device");
1748 return;
1749 }
1750
1751 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1752 !(dev->flags & P2P_DEV_REPORTED_ONCE));
1753 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1754 }
1755
1756
1757 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1758 {
1759 os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1760 p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1761 os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1762 p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1763 *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1764 }
1765
1766
1767 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1768 {
1769 if (p2p->ssid_set) {
1770 os_memcpy(params->ssid, p2p->ssid, p2p->ssid_len);
1771 params->ssid_len = p2p->ssid_len;
1772 } else {
1773 p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1774 }
1775 p2p->ssid_set = 0;
1776
1777 p2p_random(params->passphrase, p2p->cfg->passphrase_len);
1778 return 0;
1779 }
1780
1781
1782 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1783 {
1784 struct p2p_go_neg_results res;
1785 int go = peer->go_state == LOCAL_GO;
1786 struct p2p_channels intersection;
1787
1788 p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1789 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
1790
1791 os_memset(&res, 0, sizeof(res));
1792 res.role_go = go;
1793 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1794 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1795 res.wps_method = peer->wps_method;
1796 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1797 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1798 res.persistent_group = 2;
1799 else
1800 res.persistent_group = 1;
1801 }
1802
1803 if (go) {
1804 /* Setup AP mode for WPS provisioning */
1805 res.freq = p2p_channel_to_freq(p2p->op_reg_class,
1806 p2p->op_channel);
1807 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1808 res.ssid_len = p2p->ssid_len;
1809 p2p_random(res.passphrase, p2p->cfg->passphrase_len);
1810 } else {
1811 res.freq = peer->oper_freq;
1812 if (p2p->ssid_len) {
1813 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1814 res.ssid_len = p2p->ssid_len;
1815 }
1816 }
1817
1818 p2p_channels_dump(p2p, "own channels", &p2p->channels);
1819 p2p_channels_dump(p2p, "peer channels", &peer->channels);
1820 p2p_channels_intersect(&p2p->channels, &peer->channels,
1821 &intersection);
1822 if (go) {
1823 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq);
1824 p2p_channels_dump(p2p, "intersection after no-GO removal",
1825 &intersection);
1826 }
1827
1828 p2p_channels_to_freqs(&intersection, res.freq_list,
1829 P2P_MAX_CHANNELS);
1830
1831 res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1832
1833 p2p_clear_timeout(p2p);
1834 p2p->ssid_set = 0;
1835 peer->go_neg_req_sent = 0;
1836 peer->wps_method = WPS_NOT_READY;
1837 peer->oob_pw_id = 0;
1838 wpabuf_free(peer->go_neg_conf);
1839 peer->go_neg_conf = NULL;
1840
1841 p2p_set_state(p2p, P2P_PROVISIONING);
1842 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1843 }
1844
1845
1846 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1847 const u8 *data, size_t len, int rx_freq)
1848 {
1849 p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
1850 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1851
1852 if (len < 1)
1853 return;
1854
1855 switch (data[0]) {
1856 case P2P_GO_NEG_REQ:
1857 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1858 break;
1859 case P2P_GO_NEG_RESP:
1860 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1861 break;
1862 case P2P_GO_NEG_CONF:
1863 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1864 break;
1865 case P2P_INVITATION_REQ:
1866 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1867 rx_freq);
1868 break;
1869 case P2P_INVITATION_RESP:
1870 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1871 break;
1872 case P2P_PROV_DISC_REQ:
1873 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1874 break;
1875 case P2P_PROV_DISC_RESP:
1876 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1877 break;
1878 case P2P_DEV_DISC_REQ:
1879 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1880 break;
1881 case P2P_DEV_DISC_RESP:
1882 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1883 break;
1884 default:
1885 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
1886 data[0]);
1887 break;
1888 }
1889 }
1890
1891
1892 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1893 const u8 *sa, const u8 *bssid, const u8 *data,
1894 size_t len, int freq)
1895 {
1896 if (len < 1)
1897 return;
1898
1899 switch (data[0]) {
1900 case WLAN_PA_VENDOR_SPECIFIC:
1901 data++;
1902 len--;
1903 if (len < 4)
1904 return;
1905 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1906 return;
1907
1908 data += 4;
1909 len -= 4;
1910
1911 p2p_rx_p2p_action(p2p, sa, data, len, freq);
1912 break;
1913 case WLAN_PA_GAS_INITIAL_REQ:
1914 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1915 break;
1916 case WLAN_PA_GAS_INITIAL_RESP:
1917 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1918 break;
1919 case WLAN_PA_GAS_COMEBACK_REQ:
1920 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1921 break;
1922 case WLAN_PA_GAS_COMEBACK_RESP:
1923 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1924 break;
1925 }
1926 }
1927
1928
1929 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1930 const u8 *bssid, u8 category,
1931 const u8 *data, size_t len, int freq)
1932 {
1933 if (category == WLAN_ACTION_PUBLIC) {
1934 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1935 return;
1936 }
1937
1938 if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1939 return;
1940
1941 if (len < 4)
1942 return;
1943
1944 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1945 return;
1946 data += 4;
1947 len -= 4;
1948
1949 /* P2P action frame */
1950 p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
1951 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1952
1953 if (len < 1)
1954 return;
1955 switch (data[0]) {
1956 case P2P_NOA:
1957 p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
1958 /* TODO */
1959 break;
1960 case P2P_PRESENCE_REQ:
1961 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1962 break;
1963 case P2P_PRESENCE_RESP:
1964 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1965 break;
1966 case P2P_GO_DISC_REQ:
1967 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1968 break;
1969 default:
1970 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
1971 break;
1972 }
1973 }
1974
1975
1976 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1977 {
1978 struct p2p_data *p2p = eloop_ctx;
1979 if (p2p->go_neg_peer == NULL)
1980 return;
1981 if (p2p->pending_listen_freq) {
1982 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_go_neg_start");
1983 p2p->pending_listen_freq = 0;
1984 }
1985 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1986 p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1987 /*
1988 * Set new timeout to make sure a previously set one does not expire
1989 * too quickly while waiting for the GO Negotiation to complete.
1990 */
1991 p2p_set_timeout(p2p, 0, 500000);
1992 p2p_connect_send(p2p, p2p->go_neg_peer);
1993 }
1994
1995
1996 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1997 {
1998 struct p2p_data *p2p = eloop_ctx;
1999 if (p2p->invite_peer == NULL)
2000 return;
2001 if (p2p->pending_listen_freq) {
2002 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_invite_start");
2003 p2p->pending_listen_freq = 0;
2004 }
2005 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
2006 p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr,
2007 p2p->invite_dev_pw_id);
2008 }
2009
2010
2011 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
2012 const u8 *ie, size_t ie_len)
2013 {
2014 struct p2p_message msg;
2015 struct p2p_device *dev;
2016
2017 os_memset(&msg, 0, sizeof(msg));
2018 if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
2019 {
2020 p2p_parse_free(&msg);
2021 return; /* not a P2P probe */
2022 }
2023
2024 if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
2025 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
2026 != 0) {
2027 /* The Probe Request is not part of P2P Device Discovery. It is
2028 * not known whether the source address of the frame is the P2P
2029 * Device Address or P2P Interface Address. Do not add a new
2030 * peer entry based on this frames.
2031 */
2032 p2p_parse_free(&msg);
2033 return;
2034 }
2035
2036 dev = p2p_get_device(p2p, addr);
2037 if (dev) {
2038 if (msg.listen_channel) {
2039 int freq;
2040
2041 if (dev->country[0] == 0)
2042 os_memcpy(dev->country, msg.listen_channel, 3);
2043
2044 freq = p2p_channel_to_freq(msg.listen_channel[3],
2045 msg.listen_channel[4]);
2046
2047 if (freq > 0 && dev->listen_freq != freq) {
2048 p2p_dbg(p2p,
2049 "Updated peer " MACSTR " Listen channel (Probe Request): %d -> %d MHz",
2050 MAC2STR(addr), dev->listen_freq, freq);
2051 dev->listen_freq = freq;
2052 }
2053 }
2054
2055 os_get_reltime(&dev->last_seen);
2056 p2p_parse_free(&msg);
2057 return; /* already known */
2058 }
2059
2060 dev = p2p_create_device(p2p, addr);
2061 if (dev == NULL) {
2062 p2p_parse_free(&msg);
2063 return;
2064 }
2065
2066 os_get_reltime(&dev->last_seen);
2067 dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
2068
2069 if (msg.listen_channel) {
2070 os_memcpy(dev->country, msg.listen_channel, 3);
2071 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
2072 msg.listen_channel[4]);
2073 }
2074
2075 p2p_copy_wps_info(p2p, dev, 1, &msg);
2076
2077 if (msg.wfd_subelems) {
2078 wpabuf_free(dev->info.wfd_subelems);
2079 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
2080 }
2081
2082 p2p_parse_free(&msg);
2083
2084 p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
2085 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
2086 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
2087 dev->info.group_capab, dev->info.device_name,
2088 dev->listen_freq);
2089 }
2090
2091
2092 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
2093 const u8 *addr,
2094 struct p2p_message *msg)
2095 {
2096 struct p2p_device *dev;
2097
2098 dev = p2p_get_device(p2p, addr);
2099 if (dev) {
2100 os_get_reltime(&dev->last_seen);
2101 return dev; /* already known */
2102 }
2103
2104 dev = p2p_create_device(p2p, addr);
2105 if (dev == NULL)
2106 return NULL;
2107
2108 p2p_add_dev_info(p2p, addr, dev, msg);
2109
2110 return dev;
2111 }
2112
2113
2114 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
2115 {
2116 if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
2117 return 1;
2118 if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
2119 WPA_GET_BE32(&req_dev_type[2]) == 0 &&
2120 WPA_GET_BE16(&req_dev_type[6]) == 0)
2121 return 1; /* Category match with wildcard OUI/sub-category */
2122 return 0;
2123 }
2124
2125
2126 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
2127 size_t num_req_dev_type)
2128 {
2129 size_t i;
2130 for (i = 0; i < num_req_dev_type; i++) {
2131 if (dev_type_match(dev_type, req_dev_type[i]))
2132 return 1;
2133 }
2134 return 0;
2135 }
2136
2137
2138 /**
2139 * p2p_match_dev_type - Match local device type with requested type
2140 * @p2p: P2P module context from p2p_init()
2141 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
2142 * Returns: 1 on match, 0 on mismatch
2143 *
2144 * This function can be used to match the Requested Device Type attribute in
2145 * WPS IE with the local device types for deciding whether to reply to a Probe
2146 * Request frame.
2147 */
2148 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
2149 {
2150 struct wps_parse_attr attr;
2151 size_t i;
2152
2153 if (wps_parse_msg(wps, &attr))
2154 return 1; /* assume no Requested Device Type attributes */
2155
2156 if (attr.num_req_dev_type == 0)
2157 return 1; /* no Requested Device Type attributes -> match */
2158
2159 if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
2160 attr.num_req_dev_type))
2161 return 1; /* Own Primary Device Type matches */
2162
2163 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++) {
2164 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
2165 attr.req_dev_type,
2166 attr.num_req_dev_type))
2167 return 1; /* Own Secondary Device Type matches */
2168 }
2169
2170 /* No matching device type found */
2171 return 0;
2172 }
2173
2174
2175 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p,
2176 const u8 *query_hash,
2177 u8 query_count)
2178 {
2179 struct wpabuf *buf;
2180 u8 *len;
2181 int pw_id = -1;
2182 size_t extra = 0;
2183
2184 #ifdef CONFIG_WIFI_DISPLAY
2185 if (p2p->wfd_ie_probe_resp)
2186 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
2187 #endif /* CONFIG_WIFI_DISPLAY */
2188
2189 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2190 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2191
2192 if (query_count)
2193 extra += MAX_SVC_ADV_IE_LEN;
2194
2195 buf = wpabuf_alloc(1000 + extra);
2196 if (buf == NULL)
2197 return NULL;
2198
2199 if (p2p->go_neg_peer) {
2200 /* Advertise immediate availability of WPS credential */
2201 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
2202 }
2203
2204 if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) {
2205 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response");
2206 wpabuf_free(buf);
2207 return NULL;
2208 }
2209
2210 #ifdef CONFIG_WIFI_DISPLAY
2211 if (p2p->wfd_ie_probe_resp)
2212 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
2213 #endif /* CONFIG_WIFI_DISPLAY */
2214
2215 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2216 wpabuf_put_buf(buf,
2217 p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2218
2219 /* P2P IE */
2220 len = p2p_buf_add_ie_hdr(buf);
2221 p2p_buf_add_capability(buf, p2p->dev_capab &
2222 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2223 if (p2p->ext_listen_interval)
2224 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
2225 p2p->ext_listen_interval);
2226 p2p_buf_add_device_info(buf, p2p, NULL);
2227 p2p_buf_update_ie_hdr(buf, len);
2228
2229 if (query_count) {
2230 p2p_buf_add_service_instance(buf, p2p, query_count, query_hash,
2231 p2p->p2ps_adv_list);
2232 }
2233
2234 return buf;
2235 }
2236
2237 static int p2p_build_probe_resp_buf(struct p2p_data *p2p, struct wpabuf *buf,
2238 struct wpabuf *ies,
2239 const u8 *addr, int rx_freq)
2240 {
2241 struct ieee80211_mgmt *resp;
2242 u8 channel, op_class;
2243
2244 resp = wpabuf_put(buf, offsetof(struct ieee80211_mgmt,
2245 u.probe_resp.variable));
2246
2247 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2248 (WLAN_FC_STYPE_PROBE_RESP << 4));
2249 os_memcpy(resp->da, addr, ETH_ALEN);
2250 os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2251 os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2252 resp->u.probe_resp.beacon_int = host_to_le16(100);
2253 /* hardware or low-level driver will setup seq_ctrl and timestamp */
2254 resp->u.probe_resp.capab_info =
2255 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2256 WLAN_CAPABILITY_PRIVACY |
2257 WLAN_CAPABILITY_SHORT_SLOT_TIME);
2258
2259 wpabuf_put_u8(buf, WLAN_EID_SSID);
2260 wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2261 wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2262
2263 wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2264 wpabuf_put_u8(buf, 8);
2265 wpabuf_put_u8(buf, (60 / 5) | 0x80);
2266 wpabuf_put_u8(buf, 90 / 5);
2267 wpabuf_put_u8(buf, (120 / 5) | 0x80);
2268 wpabuf_put_u8(buf, 180 / 5);
2269 wpabuf_put_u8(buf, (240 / 5) | 0x80);
2270 wpabuf_put_u8(buf, 360 / 5);
2271 wpabuf_put_u8(buf, 480 / 5);
2272 wpabuf_put_u8(buf, 540 / 5);
2273
2274 if (!rx_freq) {
2275 channel = p2p->cfg->channel;
2276 } else if (p2p_freq_to_channel(rx_freq, &op_class, &channel)) {
2277 p2p_err(p2p, "Failed to convert freq to channel");
2278 return -1;
2279 }
2280
2281 wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2282 wpabuf_put_u8(buf, 1);
2283 wpabuf_put_u8(buf, channel);
2284
2285 wpabuf_put_buf(buf, ies);
2286
2287 return 0;
2288 }
2289
2290 static int p2p_service_find_asp(struct p2p_data *p2p, const u8 *hash)
2291 {
2292 struct p2ps_advertisement *adv_data;
2293 int any_wfa;
2294
2295 p2p_dbg(p2p, "ASP find - ASP list: %p", p2p->p2ps_adv_list);
2296
2297 /* Wildcard org.wi-fi.wfds matches any WFA spec defined service */
2298 any_wfa = os_memcmp(hash, p2p->wild_card_hash, P2PS_HASH_LEN) == 0;
2299
2300 adv_data = p2p->p2ps_adv_list;
2301 while (adv_data) {
2302 if (os_memcmp(hash, adv_data->hash, P2PS_HASH_LEN) == 0)
2303 return 1; /* exact hash match */
2304 if (any_wfa &&
2305 os_strncmp(adv_data->svc_name, P2PS_WILD_HASH_STR,
2306 os_strlen(P2PS_WILD_HASH_STR)) == 0)
2307 return 1; /* WFA service match */
2308 adv_data = adv_data->next;
2309 }
2310
2311 return 0;
2312 }
2313
2314
2315 static enum p2p_probe_req_status
2316 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2317 const u8 *bssid, const u8 *ie, size_t ie_len,
2318 unsigned int rx_freq)
2319 {
2320 struct ieee802_11_elems elems;
2321 struct wpabuf *buf;
2322 struct p2p_message msg;
2323 struct wpabuf *ies;
2324
2325 if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
2326 ParseFailed) {
2327 /* Ignore invalid Probe Request frames */
2328 p2p_dbg(p2p, "Could not parse Probe Request frame - ignore it");
2329 return P2P_PREQ_MALFORMED;
2330 }
2331
2332 if (elems.p2p == NULL) {
2333 /* not a P2P probe - ignore it */
2334 p2p_dbg(p2p, "Not a P2P probe - ignore it");
2335 return P2P_PREQ_NOT_P2P;
2336 }
2337
2338 if (dst && !is_broadcast_ether_addr(dst) &&
2339 os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2340 /* Not sent to the broadcast address or our P2P Device Address
2341 */
2342 p2p_dbg(p2p, "Probe Req DA " MACSTR " not ours - ignore it",
2343 MAC2STR(dst));
2344 return P2P_PREQ_NOT_PROCESSED;
2345 }
2346
2347 if (bssid && !is_broadcast_ether_addr(bssid)) {
2348 /* Not sent to the Wildcard BSSID */
2349 p2p_dbg(p2p, "Probe Req BSSID " MACSTR " not wildcard - ignore it",
2350 MAC2STR(bssid));
2351 return P2P_PREQ_NOT_PROCESSED;
2352 }
2353
2354 if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2355 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2356 0) {
2357 /* not using P2P Wildcard SSID - ignore */
2358 p2p_dbg(p2p, "Probe Req not using P2P Wildcard SSID - ignore it");
2359 return P2P_PREQ_NOT_PROCESSED;
2360 }
2361
2362 if (supp_rates_11b_only(&elems)) {
2363 /* Indicates support for 11b rates only */
2364 p2p_dbg(p2p, "Probe Req with 11b rates only supported - ignore it");
2365 return P2P_PREQ_NOT_P2P;
2366 }
2367
2368 os_memset(&msg, 0, sizeof(msg));
2369 if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2370 /* Could not parse P2P attributes */
2371 p2p_dbg(p2p, "Could not parse P2P attributes in Probe Req - ignore it");
2372 return P2P_PREQ_NOT_P2P;
2373 }
2374
2375 if (msg.service_hash && msg.service_hash_count) {
2376 const u8 *hash = msg.service_hash;
2377 u8 i;
2378 int p2ps_svc_found = 0;
2379
2380 p2p_dbg(p2p, "in_listen=%d drv_in_listen=%d when received P2PS Probe Request at %u MHz; own Listen channel %u, pending listen freq %u MHz",
2381 p2p->in_listen, p2p->drv_in_listen, rx_freq,
2382 p2p->cfg->channel, p2p->pending_listen_freq);
2383
2384 if (!p2p->in_listen && !p2p->drv_in_listen &&
2385 p2p->pending_listen_freq && rx_freq &&
2386 rx_freq != p2p->pending_listen_freq) {
2387 p2p_dbg(p2p, "Do not reply to Probe Request frame that was received on %u MHz while waiting to start Listen state on %u MHz",
2388 rx_freq, p2p->pending_listen_freq);
2389 p2p_parse_free(&msg);
2390 return P2P_PREQ_NOT_LISTEN;
2391 }
2392
2393 for (i = 0; i < msg.service_hash_count; i++) {
2394 if (p2p_service_find_asp(p2p, hash)) {
2395 p2p_dbg(p2p, "Service Hash match found: "
2396 MACSTR, MAC2STR(hash));
2397 p2ps_svc_found = 1;
2398 break;
2399 }
2400 hash += P2PS_HASH_LEN;
2401 }
2402
2403 /* Probed hash unknown */
2404 if (!p2ps_svc_found) {
2405 p2p_dbg(p2p, "No Service Hash match found");
2406 p2p_parse_free(&msg);
2407 return P2P_PREQ_NOT_PROCESSED;
2408 }
2409 } else {
2410 /* This is not a P2PS Probe Request */
2411 p2p_dbg(p2p, "No P2PS Hash in Probe Request");
2412
2413 if (!p2p->in_listen || !p2p->drv_in_listen) {
2414 /* not in Listen state - ignore Probe Request */
2415 p2p_dbg(p2p, "Not in Listen state (in_listen=%d drv_in_listen=%d) - ignore Probe Request",
2416 p2p->in_listen, p2p->drv_in_listen);
2417 p2p_parse_free(&msg);
2418 return P2P_PREQ_NOT_LISTEN;
2419 }
2420 }
2421
2422 if (msg.device_id &&
2423 os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2424 /* Device ID did not match */
2425 p2p_dbg(p2p, "Probe Req requested Device ID " MACSTR " did not match - ignore it",
2426 MAC2STR(msg.device_id));
2427 p2p_parse_free(&msg);
2428 return P2P_PREQ_NOT_PROCESSED;
2429 }
2430
2431 /* Check Requested Device Type match */
2432 if (msg.wps_attributes &&
2433 !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2434 /* No match with Requested Device Type */
2435 p2p_dbg(p2p, "Probe Req requestred Device Type did not match - ignore it");
2436 p2p_parse_free(&msg);
2437 return P2P_PREQ_NOT_PROCESSED;
2438 }
2439
2440 if (!p2p->cfg->send_probe_resp) {
2441 /* Response generated elsewhere */
2442 p2p_dbg(p2p, "Probe Resp generated elsewhere - do not generate additional response");
2443 p2p_parse_free(&msg);
2444 return P2P_PREQ_NOT_PROCESSED;
2445 }
2446
2447 p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
2448
2449 /*
2450 * We do not really have a specific BSS that this frame is advertising,
2451 * so build a frame that has some information in valid format. This is
2452 * really only used for discovery purposes, not to learn exact BSS
2453 * parameters.
2454 */
2455 ies = p2p_build_probe_resp_ies(p2p, msg.service_hash,
2456 msg.service_hash_count);
2457 p2p_parse_free(&msg);
2458 if (ies == NULL)
2459 return P2P_PREQ_NOT_PROCESSED;
2460
2461 buf = wpabuf_alloc(200 + wpabuf_len(ies));
2462 if (buf == NULL) {
2463 wpabuf_free(ies);
2464 return P2P_PREQ_NOT_PROCESSED;
2465 }
2466
2467 if (p2p_build_probe_resp_buf(p2p, buf, ies, addr, rx_freq)) {
2468 wpabuf_free(ies);
2469 wpabuf_free(buf);
2470 return P2P_PREQ_NOT_PROCESSED;
2471 }
2472
2473 wpabuf_free(ies);
2474
2475 p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf, rx_freq);
2476
2477 wpabuf_free(buf);
2478
2479 return P2P_PREQ_PROCESSED;
2480 }
2481
2482
2483 enum p2p_probe_req_status
2484 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2485 const u8 *bssid, const u8 *ie, size_t ie_len,
2486 unsigned int rx_freq, int p2p_lo_started)
2487 {
2488 enum p2p_probe_req_status res;
2489
2490 p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2491
2492 if (p2p_lo_started) {
2493 p2p_dbg(p2p,
2494 "Probe Response is offloaded, do not reply Probe Request");
2495 return P2P_PREQ_PROCESSED;
2496 }
2497
2498 res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len, rx_freq);
2499 if (res != P2P_PREQ_PROCESSED && res != P2P_PREQ_NOT_PROCESSED)
2500 return res;
2501
2502 /*
2503 * Activate a pending GO Negotiation/Invite flow if a received Probe
2504 * Request frame is from an expected peer. Some devices may share the
2505 * same address for P2P and non-P2P STA running simultaneously. The
2506 * P2P_PREQ_PROCESSED and P2P_PREQ_NOT_PROCESSED p2p_reply_probe()
2507 * return values verified above ensure we are handling a Probe Request
2508 * frame from a P2P peer.
2509 */
2510 if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2511 p2p->go_neg_peer &&
2512 os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2513 == 0 &&
2514 !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
2515 /* Received a Probe Request from GO Negotiation peer */
2516 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
2517 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2518 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2519 return res;
2520 }
2521
2522 if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2523 p2p->invite_peer &&
2524 (p2p->invite_peer->flags & P2P_DEV_WAIT_INV_REQ_ACK) &&
2525 os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2526 == 0) {
2527 /* Received a Probe Request from Invite peer */
2528 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
2529 eloop_cancel_timeout(p2p_invite_start, p2p, NULL);
2530 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2531 return res;
2532 }
2533
2534 return res;
2535 }
2536
2537
2538 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2539 u8 *buf, size_t len, struct wpabuf *p2p_ie)
2540 {
2541 struct wpabuf *tmp;
2542 u8 *lpos;
2543 size_t tmplen;
2544 int res;
2545 u8 group_capab;
2546 struct p2p_message msg;
2547
2548 if (p2p_ie == NULL)
2549 return 0; /* WLAN AP is not a P2P manager */
2550
2551 os_memset(&msg, 0, sizeof(msg));
2552 if (p2p_parse_p2p_ie(p2p_ie, &msg) < 0)
2553 return 0;
2554
2555 p2p_dbg(p2p, "BSS P2P manageability %s",
2556 msg.manageability ? "enabled" : "disabled");
2557
2558 if (!msg.manageability)
2559 return 0;
2560
2561 /*
2562 * (Re)Association Request - P2P IE
2563 * P2P Capability attribute (shall be present)
2564 * P2P Interface attribute (present if concurrent device and
2565 * P2P Management is enabled)
2566 */
2567 tmp = wpabuf_alloc(200);
2568 if (tmp == NULL)
2569 return -1;
2570
2571 lpos = p2p_buf_add_ie_hdr(tmp);
2572 group_capab = 0;
2573 if (p2p->num_groups > 0) {
2574 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2575 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2576 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2577 p2p->cross_connect)
2578 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2579 }
2580 p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2581 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2582 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2583 p2p_buf_add_p2p_interface(tmp, p2p);
2584 p2p_buf_update_ie_hdr(tmp, lpos);
2585
2586 tmplen = wpabuf_len(tmp);
2587 if (tmplen > len)
2588 res = -1;
2589 else {
2590 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2591 res = tmplen;
2592 }
2593 wpabuf_free(tmp);
2594
2595 return res;
2596 }
2597
2598
2599 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2600 size_t len, int p2p_group, struct wpabuf *p2p_ie)
2601 {
2602 struct wpabuf *tmp;
2603 u8 *lpos;
2604 struct p2p_device *peer;
2605 size_t tmplen;
2606 int res;
2607 size_t extra = 0;
2608
2609 if (!p2p_group)
2610 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2611
2612 #ifdef CONFIG_WIFI_DISPLAY
2613 if (p2p->wfd_ie_assoc_req)
2614 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2615 #endif /* CONFIG_WIFI_DISPLAY */
2616
2617 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2618 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2619
2620 /*
2621 * (Re)Association Request - P2P IE
2622 * P2P Capability attribute (shall be present)
2623 * Extended Listen Timing (may be present)
2624 * P2P Device Info attribute (shall be present)
2625 */
2626 tmp = wpabuf_alloc(200 + extra);
2627 if (tmp == NULL)
2628 return -1;
2629
2630 #ifdef CONFIG_WIFI_DISPLAY
2631 if (p2p->wfd_ie_assoc_req)
2632 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2633 #endif /* CONFIG_WIFI_DISPLAY */
2634
2635 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2636 wpabuf_put_buf(tmp,
2637 p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2638
2639 peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2640
2641 lpos = p2p_buf_add_ie_hdr(tmp);
2642 p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2643 if (p2p->ext_listen_interval)
2644 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2645 p2p->ext_listen_interval);
2646 p2p_buf_add_device_info(tmp, p2p, peer);
2647 p2p_buf_update_ie_hdr(tmp, lpos);
2648
2649 tmplen = wpabuf_len(tmp);
2650 if (tmplen > len)
2651 res = -1;
2652 else {
2653 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2654 res = tmplen;
2655 }
2656 wpabuf_free(tmp);
2657
2658 return res;
2659 }
2660
2661
2662 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2663 {
2664 struct wpabuf *p2p_ie;
2665 int ret;
2666
2667 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2668 if (p2p_ie == NULL)
2669 return 0;
2670
2671 ret = p2p_attr_text(p2p_ie, buf, end);
2672 wpabuf_free(p2p_ie);
2673 return ret;
2674 }
2675
2676
2677 struct p2ps_advertisement *
2678 p2p_service_p2ps_id(struct p2p_data *p2p, u32 adv_id)
2679 {
2680 struct p2ps_advertisement *adv_data;
2681
2682 if (!p2p)
2683 return NULL;
2684
2685 adv_data = p2p->p2ps_adv_list;
2686 while (adv_data) {
2687 if (adv_data->id == adv_id)
2688 return adv_data;
2689 adv_data = adv_data->next;
2690 }
2691
2692 return NULL;
2693 }
2694
2695
2696 int p2p_service_del_asp(struct p2p_data *p2p, u32 adv_id)
2697 {
2698 struct p2ps_advertisement *adv_data;
2699 struct p2ps_advertisement **prior;
2700
2701 if (!p2p)
2702 return -1;
2703
2704 adv_data = p2p->p2ps_adv_list;
2705 prior = &p2p->p2ps_adv_list;
2706 while (adv_data) {
2707 if (adv_data->id == adv_id) {
2708 p2p_dbg(p2p, "Delete ASP adv_id=0x%x", adv_id);
2709 *prior = adv_data->next;
2710 os_free(adv_data);
2711 return 0;
2712 }
2713 prior = &adv_data->next;
2714 adv_data = adv_data->next;
2715 }
2716
2717 return -1;
2718 }
2719
2720
2721 int p2p_service_add_asp(struct p2p_data *p2p, int auto_accept, u32 adv_id,
2722 const char *adv_str, u8 svc_state, u16 config_methods,
2723 const char *svc_info, const u8 *cpt_priority)
2724 {
2725 struct p2ps_advertisement *adv_data, *tmp, **prev;
2726 u8 buf[P2PS_HASH_LEN];
2727 size_t adv_data_len, adv_len, info_len = 0;
2728 int i;
2729
2730 if (!p2p || !adv_str || !adv_str[0] || !cpt_priority)
2731 return -1;
2732
2733 if (!(config_methods & p2p->cfg->config_methods)) {
2734 p2p_dbg(p2p, "Config methods not supported svc: 0x%x dev: 0x%x",
2735 config_methods, p2p->cfg->config_methods);
2736 return -1;
2737 }
2738
2739 if (!p2ps_gen_hash(p2p, adv_str, buf))
2740 return -1;
2741
2742 if (svc_info)
2743 info_len = os_strlen(svc_info);
2744 adv_len = os_strlen(adv_str);
2745 adv_data_len = sizeof(struct p2ps_advertisement) + adv_len + 1 +
2746 info_len + 1;
2747
2748 adv_data = os_zalloc(adv_data_len);
2749 if (!adv_data)
2750 return -1;
2751
2752 os_memcpy(adv_data->hash, buf, P2PS_HASH_LEN);
2753 adv_data->id = adv_id;
2754 adv_data->state = svc_state;
2755 adv_data->config_methods = config_methods & p2p->cfg->config_methods;
2756 adv_data->auto_accept = (u8) auto_accept;
2757 os_memcpy(adv_data->svc_name, adv_str, adv_len);
2758
2759 for (i = 0; cpt_priority[i] && i < P2PS_FEATURE_CAPAB_CPT_MAX; i++) {
2760 adv_data->cpt_priority[i] = cpt_priority[i];
2761 adv_data->cpt_mask |= cpt_priority[i];
2762 }
2763
2764 if (svc_info && info_len) {
2765 adv_data->svc_info = &adv_data->svc_name[adv_len + 1];
2766 os_memcpy(adv_data->svc_info, svc_info, info_len);
2767 }
2768
2769 /*
2770 * Group Advertisements by service string. They do not need to be
2771 * sorted, but groups allow easier Probe Response instance grouping
2772 */
2773 tmp = p2p->p2ps_adv_list;
2774 prev = &p2p->p2ps_adv_list;
2775 while (tmp) {
2776 if (tmp->id == adv_data->id) {
2777 if (os_strcmp(tmp->svc_name, adv_data->svc_name) != 0) {
2778 os_free(adv_data);
2779 return -1;
2780 }
2781 adv_data->next = tmp->next;
2782 *prev = adv_data;
2783 os_free(tmp);
2784 goto inserted;
2785 } else {
2786 if (os_strcmp(tmp->svc_name, adv_data->svc_name) == 0) {
2787 adv_data->next = tmp->next;
2788 tmp->next = adv_data;
2789 goto inserted;
2790 }
2791 }
2792 prev = &tmp->next;
2793 tmp = tmp->next;
2794 }
2795
2796 /* No svc_name match found */
2797 adv_data->next = p2p->p2ps_adv_list;
2798 p2p->p2ps_adv_list = adv_data;
2799
2800 inserted:
2801 p2p_dbg(p2p,
2802 "Added ASP advertisement adv_id=0x%x config_methods=0x%x svc_state=0x%x adv_str='%s' cpt_mask=0x%x",
2803 adv_id, adv_data->config_methods, svc_state, adv_str,
2804 adv_data->cpt_mask);
2805
2806 return 0;
2807 }
2808
2809
2810 void p2p_service_flush_asp(struct p2p_data *p2p)
2811 {
2812 struct p2ps_advertisement *adv, *prev;
2813
2814 if (!p2p)
2815 return;
2816
2817 adv = p2p->p2ps_adv_list;
2818 while (adv) {
2819 prev = adv;
2820 adv = adv->next;
2821 os_free(prev);
2822 }
2823
2824 p2p->p2ps_adv_list = NULL;
2825 p2p_dbg(p2p, "All ASP advertisements flushed");
2826 }
2827
2828
2829 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2830 {
2831 struct p2p_message msg;
2832
2833 os_memset(&msg, 0, sizeof(msg));
2834 if (p2p_parse_p2p_ie(p2p_ie, &msg))
2835 return -1;
2836
2837 if (msg.p2p_device_addr) {
2838 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2839 return 0;
2840 } else if (msg.device_id) {
2841 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2842 return 0;
2843 }
2844 return -1;
2845 }
2846
2847
2848 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2849 {
2850 struct wpabuf *p2p_ie;
2851 int ret;
2852
2853 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2854 P2P_IE_VENDOR_TYPE);
2855 if (p2p_ie == NULL)
2856 return -1;
2857 ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2858 wpabuf_free(p2p_ie);
2859 return ret;
2860 }
2861
2862
2863 static void p2p_clear_go_neg(struct p2p_data *p2p)
2864 {
2865 p2p->go_neg_peer = NULL;
2866 p2p_clear_timeout(p2p);
2867 p2p_set_state(p2p, P2P_IDLE);
2868 }
2869
2870
2871 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2872 {
2873 if (p2p->go_neg_peer == NULL) {
2874 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
2875 return; /* No pending Group Formation */
2876 }
2877
2878 if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2879 0) {
2880 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2881 MACSTR " (GO Negotiation peer " MACSTR ")",
2882 MAC2STR(mac_addr),
2883 MAC2STR(p2p->go_neg_peer->intended_addr));
2884 return; /* Ignore unexpected peer address */
2885 }
2886
2887 p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
2888 MAC2STR(mac_addr));
2889
2890 p2p_clear_go_neg(p2p);
2891 }
2892
2893
2894 void p2p_group_formation_failed(struct p2p_data *p2p)
2895 {
2896 if (p2p->go_neg_peer == NULL) {
2897 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
2898 return; /* No pending Group Formation */
2899 }
2900
2901 p2p_dbg(p2p, "Group Formation failed with " MACSTR,
2902 MAC2STR(p2p->go_neg_peer->intended_addr));
2903
2904 p2p_clear_go_neg(p2p);
2905 }
2906
2907
2908 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2909 {
2910 struct p2p_data *p2p;
2911
2912 if (cfg->max_peers < 1 ||
2913 cfg->passphrase_len < 8 || cfg->passphrase_len > 63)
2914 return NULL;
2915
2916 p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2917 if (p2p == NULL)
2918 return NULL;
2919 p2p->cfg = (struct p2p_config *) (p2p + 1);
2920 os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2921 if (cfg->dev_name)
2922 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2923 if (cfg->manufacturer)
2924 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2925 if (cfg->model_name)
2926 p2p->cfg->model_name = os_strdup(cfg->model_name);
2927 if (cfg->model_number)
2928 p2p->cfg->model_number = os_strdup(cfg->model_number);
2929 if (cfg->serial_number)
2930 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2931 if (cfg->pref_chan) {
2932 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2933 sizeof(struct p2p_channel));
2934 if (p2p->cfg->pref_chan) {
2935 os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2936 cfg->num_pref_chan *
2937 sizeof(struct p2p_channel));
2938 } else
2939 p2p->cfg->num_pref_chan = 0;
2940 }
2941
2942 p2ps_gen_hash(p2p, P2PS_WILD_HASH_STR, p2p->wild_card_hash);
2943
2944 p2p->min_disc_int = 1;
2945 p2p->max_disc_int = 3;
2946 p2p->max_disc_tu = -1;
2947
2948 if (os_get_random(&p2p->next_tie_breaker, 1) < 0)
2949 p2p->next_tie_breaker = 0;
2950 p2p->next_tie_breaker &= 0x01;
2951 if (cfg->sd_request)
2952 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2953 p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2954 if (cfg->concurrent_operations)
2955 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2956 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2957
2958 dl_list_init(&p2p->devices);
2959
2960 p2p->go_timeout = 100;
2961 p2p->client_timeout = 20;
2962 p2p->num_p2p_sd_queries = 0;
2963
2964 p2p_dbg(p2p, "initialized");
2965 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2966 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2967
2968 return p2p;
2969 }
2970
2971
2972 void p2p_deinit(struct p2p_data *p2p)
2973 {
2974 #ifdef CONFIG_WIFI_DISPLAY
2975 wpabuf_free(p2p->wfd_ie_beacon);
2976 wpabuf_free(p2p->wfd_ie_probe_req);
2977 wpabuf_free(p2p->wfd_ie_probe_resp);
2978 wpabuf_free(p2p->wfd_ie_assoc_req);
2979 wpabuf_free(p2p->wfd_ie_invitation);
2980 wpabuf_free(p2p->wfd_ie_prov_disc_req);
2981 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2982 wpabuf_free(p2p->wfd_ie_go_neg);
2983 wpabuf_free(p2p->wfd_dev_info);
2984 wpabuf_free(p2p->wfd_assoc_bssid);
2985 wpabuf_free(p2p->wfd_coupled_sink_info);
2986 #endif /* CONFIG_WIFI_DISPLAY */
2987
2988 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2989 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2990 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
2991 p2p_flush(p2p);
2992 p2p_free_req_dev_types(p2p);
2993 os_free(p2p->cfg->dev_name);
2994 os_free(p2p->cfg->manufacturer);
2995 os_free(p2p->cfg->model_name);
2996 os_free(p2p->cfg->model_number);
2997 os_free(p2p->cfg->serial_number);
2998 os_free(p2p->cfg->pref_chan);
2999 os_free(p2p->groups);
3000 p2ps_prov_free(p2p);
3001 wpabuf_free(p2p->sd_resp);
3002 p2p_remove_wps_vendor_extensions(p2p);
3003 os_free(p2p->no_go_freq.range);
3004 p2p_service_flush_asp(p2p);
3005
3006 os_free(p2p);
3007 }
3008
3009
3010 void p2p_flush(struct p2p_data *p2p)
3011 {
3012 struct p2p_device *dev, *prev;
3013
3014 p2p_ext_listen(p2p, 0, 0);
3015 p2p_stop_find(p2p);
3016 dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
3017 list) {
3018 dl_list_del(&dev->list);
3019 p2p_device_free(p2p, dev);
3020 }
3021 p2p_free_sd_queries(p2p);
3022 os_free(p2p->after_scan_tx);
3023 p2p->after_scan_tx = NULL;
3024 p2p->ssid_set = 0;
3025 }
3026
3027
3028 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
3029 {
3030 struct p2p_device *dev;
3031
3032 dev = p2p_get_device(p2p, addr);
3033 if (dev == NULL)
3034 return -1;
3035
3036 p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
3037
3038 if (p2p->go_neg_peer == dev) {
3039 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
3040 p2p->go_neg_peer = NULL;
3041 }
3042
3043 dev->wps_method = WPS_NOT_READY;
3044 dev->oob_pw_id = 0;
3045 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
3046 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
3047
3048 /* Check if after_scan_tx is for this peer. If so free it */
3049 if (p2p->after_scan_tx &&
3050 os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
3051 os_free(p2p->after_scan_tx);
3052 p2p->after_scan_tx = NULL;
3053 }
3054
3055 return 0;
3056 }
3057
3058
3059 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
3060 {
3061 os_free(p2p->cfg->dev_name);
3062 if (dev_name) {
3063 p2p->cfg->dev_name = os_strdup(dev_name);
3064 if (p2p->cfg->dev_name == NULL)
3065 return -1;
3066 } else
3067 p2p->cfg->dev_name = NULL;
3068 return 0;
3069 }
3070
3071
3072 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
3073 {
3074 os_free(p2p->cfg->manufacturer);
3075 p2p->cfg->manufacturer = NULL;
3076 if (manufacturer) {
3077 p2p->cfg->manufacturer = os_strdup(manufacturer);
3078 if (p2p->cfg->manufacturer == NULL)
3079 return -1;
3080 }
3081
3082 return 0;
3083 }
3084
3085
3086 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
3087 {
3088 os_free(p2p->cfg->model_name);
3089 p2p->cfg->model_name = NULL;
3090 if (model_name) {
3091 p2p->cfg->model_name = os_strdup(model_name);
3092 if (p2p->cfg->model_name == NULL)
3093 return -1;
3094 }
3095
3096 return 0;
3097 }
3098
3099
3100 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
3101 {
3102 os_free(p2p->cfg->model_number);
3103 p2p->cfg->model_number = NULL;
3104 if (model_number) {
3105 p2p->cfg->model_number = os_strdup(model_number);
3106 if (p2p->cfg->model_number == NULL)
3107 return -1;
3108 }
3109
3110 return 0;
3111 }
3112
3113
3114 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
3115 {
3116 os_free(p2p->cfg->serial_number);
3117 p2p->cfg->serial_number = NULL;
3118 if (serial_number) {
3119 p2p->cfg->serial_number = os_strdup(serial_number);
3120 if (p2p->cfg->serial_number == NULL)
3121 return -1;
3122 }
3123
3124 return 0;
3125 }
3126
3127
3128 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
3129 {
3130 p2p->cfg->config_methods = config_methods;
3131 }
3132
3133
3134 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
3135 {
3136 os_memcpy(p2p->cfg->uuid, uuid, 16);
3137 }
3138
3139
3140 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
3141 {
3142 os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
3143 return 0;
3144 }
3145
3146
3147 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
3148 size_t num_dev_types)
3149 {
3150 if (num_dev_types > P2P_SEC_DEVICE_TYPES)
3151 num_dev_types = P2P_SEC_DEVICE_TYPES;
3152 p2p->cfg->num_sec_dev_types = num_dev_types;
3153 os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
3154 return 0;
3155 }
3156
3157
3158 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
3159 {
3160 int i;
3161
3162 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3163 wpabuf_free(p2p->wps_vendor_ext[i]);
3164 p2p->wps_vendor_ext[i] = NULL;
3165 }
3166 }
3167
3168
3169 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
3170 const struct wpabuf *vendor_ext)
3171 {
3172 int i;
3173
3174 if (vendor_ext == NULL)
3175 return -1;
3176
3177 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3178 if (p2p->wps_vendor_ext[i] == NULL)
3179 break;
3180 }
3181 if (i >= P2P_MAX_WPS_VENDOR_EXT)
3182 return -1;
3183
3184 p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
3185 if (p2p->wps_vendor_ext[i] == NULL)
3186 return -1;
3187
3188 return 0;
3189 }
3190
3191
3192 int p2p_set_country(struct p2p_data *p2p, const char *country)
3193 {
3194 os_memcpy(p2p->cfg->country, country, 3);
3195 return 0;
3196 }
3197
3198
3199 static int p2p_pre_find_operation(struct p2p_data *p2p, struct p2p_device *dev)
3200 {
3201 int res;
3202
3203 if (dev->sd_pending_bcast_queries == 0) {
3204 /* Initialize with total number of registered broadcast
3205 * SD queries. */
3206 dev->sd_pending_bcast_queries = p2p->num_p2p_sd_queries;
3207 }
3208
3209 res = p2p_start_sd(p2p, dev);
3210 if (res == -2)
3211 return -2;
3212 if (res == 0)
3213 return 1;
3214
3215 if (dev->req_config_methods &&
3216 !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
3217 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3218 MACSTR " (config methods 0x%x)",
3219 MAC2STR(dev->info.p2p_device_addr),
3220 dev->req_config_methods);
3221 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
3222 return 1;
3223 }
3224
3225 return 0;
3226 }
3227
3228
3229 void p2p_continue_find(struct p2p_data *p2p)
3230 {
3231 struct p2p_device *dev;
3232 int found, res;
3233
3234 p2p_set_state(p2p, P2P_SEARCH);
3235
3236 /* Continue from the device following the last iteration */
3237 found = 0;
3238 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3239 if (dev == p2p->last_p2p_find_oper) {
3240 found = 1;
3241 continue;
3242 }
3243 if (!found)
3244 continue;
3245 res = p2p_pre_find_operation(p2p, dev);
3246 if (res > 0) {
3247 p2p->last_p2p_find_oper = dev;
3248 return;
3249 }
3250 if (res == -2)
3251 goto skip_sd;
3252 }
3253
3254 /*
3255 * Wrap around to the beginning of the list and continue until the last
3256 * iteration device.
3257 */
3258 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3259 res = p2p_pre_find_operation(p2p, dev);
3260 if (res > 0) {
3261 p2p->last_p2p_find_oper = dev;
3262 return;
3263 }
3264 if (res == -2)
3265 goto skip_sd;
3266 if (dev == p2p->last_p2p_find_oper)
3267 break;
3268 }
3269
3270 skip_sd:
3271 os_memset(p2p->sd_query_no_ack, 0, ETH_ALEN);
3272 p2p_listen_in_find(p2p, 1);
3273 }
3274
3275
3276 static void p2p_sd_cb(struct p2p_data *p2p, int success)
3277 {
3278 p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
3279 success);
3280 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3281
3282 if (!success) {
3283 if (p2p->sd_peer) {
3284 if (is_zero_ether_addr(p2p->sd_query_no_ack)) {
3285 os_memcpy(p2p->sd_query_no_ack,
3286 p2p->sd_peer->info.p2p_device_addr,
3287 ETH_ALEN);
3288 p2p_dbg(p2p,
3289 "First SD Query no-ACK in this search iteration: "
3290 MACSTR, MAC2STR(p2p->sd_query_no_ack));
3291 }
3292 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3293 }
3294 p2p->sd_peer = NULL;
3295 if (p2p->state != P2P_IDLE)
3296 p2p_continue_find(p2p);
3297 return;
3298 }
3299
3300 if (p2p->sd_peer == NULL) {
3301 p2p_dbg(p2p, "No SD peer entry known");
3302 if (p2p->state != P2P_IDLE)
3303 p2p_continue_find(p2p);
3304 return;
3305 }
3306
3307 if (p2p->sd_query && p2p->sd_query->for_all_peers) {
3308 /* Update the pending broadcast SD query count for this device
3309 */
3310 p2p->sd_peer->sd_pending_bcast_queries--;
3311
3312 /*
3313 * If there are no pending broadcast queries for this device,
3314 * mark it as done (-1).
3315 */
3316 if (p2p->sd_peer->sd_pending_bcast_queries == 0)
3317 p2p->sd_peer->sd_pending_bcast_queries = -1;
3318 }
3319
3320 /* Wait for response from the peer */
3321 p2p_set_state(p2p, P2P_SD_DURING_FIND);
3322 p2p_set_timeout(p2p, 0, 200000);
3323 }
3324
3325
3326 /**
3327 * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
3328 * @p2p: P2P module context from p2p_init()
3329 */
3330 static void p2p_retry_pd(struct p2p_data *p2p)
3331 {
3332 struct p2p_device *dev;
3333
3334 /*
3335 * Retry the prov disc req attempt only for the peer that the user had
3336 * requested.
3337 */
3338
3339 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3340 if (os_memcmp(p2p->pending_pd_devaddr,
3341 dev->info.p2p_device_addr, ETH_ALEN) != 0)
3342 continue;
3343 if (!dev->req_config_methods)
3344 continue;
3345
3346 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3347 MACSTR " (config methods 0x%x)",
3348 MAC2STR(dev->info.p2p_device_addr),
3349 dev->req_config_methods);
3350 p2p_send_prov_disc_req(p2p, dev,
3351 dev->flags & P2P_DEV_PD_FOR_JOIN,
3352 p2p->pd_force_freq);
3353 return;
3354 }
3355 }
3356
3357
3358 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
3359 {
3360 p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
3361 success);
3362
3363 /*
3364 * Postpone resetting the pending action state till after we actually
3365 * time out. This allows us to take some action like notifying any
3366 * interested parties about no response to the request.
3367 *
3368 * When the timer (below) goes off we check in IDLE, SEARCH, or
3369 * LISTEN_ONLY state, which are the only allowed states to issue a PD
3370 * requests in, if this was still pending and then raise notification.
3371 */
3372
3373 if (!success) {
3374 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3375
3376 if (p2p->user_initiated_pd &&
3377 (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
3378 {
3379 /* Retry request from timeout to avoid busy loops */
3380 p2p->pending_action_state = P2P_PENDING_PD;
3381 p2p_set_timeout(p2p, 0, 50000);
3382 } else if (p2p->state != P2P_IDLE)
3383 p2p_continue_find(p2p);
3384 else if (p2p->user_initiated_pd) {
3385 p2p->pending_action_state = P2P_PENDING_PD;
3386 p2p_set_timeout(p2p, 0, 300000);
3387 }
3388 return;
3389 }
3390
3391 /*
3392 * If after PD Request the peer doesn't expect to receive PD Response
3393 * the PD Request ACK indicates a completion of the current PD. This
3394 * happens only on the advertiser side sending the follow-on PD Request
3395 * with the status different than 12 (Success: accepted by user).
3396 */
3397 if (p2p->p2ps_prov && !p2p->p2ps_prov->pd_seeker &&
3398 p2p->p2ps_prov->status != P2P_SC_SUCCESS_DEFERRED) {
3399 p2p_dbg(p2p, "P2PS PD completion on Follow-on PD Request ACK");
3400
3401 if (p2p->send_action_in_progress) {
3402 p2p->send_action_in_progress = 0;
3403 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3404 }
3405
3406 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3407
3408 if (p2p->cfg->p2ps_prov_complete) {
3409 p2p->cfg->p2ps_prov_complete(
3410 p2p->cfg->cb_ctx,
3411 p2p->p2ps_prov->status,
3412 p2p->p2ps_prov->adv_mac,
3413 p2p->p2ps_prov->adv_mac,
3414 p2p->p2ps_prov->session_mac,
3415 NULL, p2p->p2ps_prov->adv_id,
3416 p2p->p2ps_prov->session_id,
3417 0, 0, NULL, 0, 0, 0,
3418 NULL, NULL, 0, 0, NULL, 0);
3419 }
3420
3421 if (p2p->user_initiated_pd)
3422 p2p_reset_pending_pd(p2p);
3423
3424 p2ps_prov_free(p2p);
3425 return;
3426 }
3427
3428 /*
3429 * This postponing, of resetting pending_action_state, needs to be
3430 * done only for user initiated PD requests and not internal ones.
3431 */
3432 if (p2p->user_initiated_pd)
3433 p2p->pending_action_state = P2P_PENDING_PD;
3434 else
3435 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3436
3437 /* Wait for response from the peer */
3438 if (p2p->state == P2P_SEARCH)
3439 p2p_set_state(p2p, P2P_PD_DURING_FIND);
3440 p2p_set_timeout(p2p, 0, 200000);
3441 }
3442
3443
3444 static int p2p_check_after_scan_tx_continuation(struct p2p_data *p2p)
3445 {
3446 if (p2p->after_scan_tx_in_progress) {
3447 p2p->after_scan_tx_in_progress = 0;
3448 if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
3449 p2p_run_after_scan(p2p))
3450 return 1;
3451 if (p2p->state == P2P_SEARCH) {
3452 p2p_dbg(p2p, "Continue find after after_scan_tx completion");
3453 p2p_continue_find(p2p);
3454 }
3455 }
3456
3457 return 0;
3458 }
3459
3460
3461 static void p2p_prov_disc_resp_cb(struct p2p_data *p2p, int success)
3462 {
3463 p2p_dbg(p2p, "Provision Discovery Response TX callback: success=%d",
3464 success);
3465
3466 if (p2p->send_action_in_progress) {
3467 p2p->send_action_in_progress = 0;
3468 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3469 }
3470
3471 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3472
3473 if (!success)
3474 goto continue_search;
3475
3476 if (!p2p->cfg->prov_disc_resp_cb ||
3477 p2p->cfg->prov_disc_resp_cb(p2p->cfg->cb_ctx) < 1)
3478 goto continue_search;
3479
3480 p2p_dbg(p2p,
3481 "Post-Provision Discovery operations started - do not try to continue other P2P operations");
3482 return;
3483
3484 continue_search:
3485 p2p_check_after_scan_tx_continuation(p2p);
3486 }
3487
3488
3489 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
3490 struct os_reltime *rx_time, int level, const u8 *ies,
3491 size_t ies_len)
3492 {
3493 if (os_reltime_before(rx_time, &p2p->find_start)) {
3494 /*
3495 * The driver may have cached (e.g., in cfg80211 BSS table) the
3496 * scan results for relatively long time. To avoid reporting
3497 * stale information, update P2P peers only based on results
3498 * that have based on frames received after the last p2p_find
3499 * operation was started.
3500 */
3501 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
3502 " (rx_time=%u.%06u find_start=%u.%06u)",
3503 MAC2STR(bssid), (unsigned int) rx_time->sec,
3504 (unsigned int) rx_time->usec,
3505 (unsigned int) p2p->find_start.sec,
3506 (unsigned int) p2p->find_start.usec);
3507 return 0;
3508 }
3509
3510 p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
3511
3512 return 0;
3513 }
3514
3515
3516 void p2p_scan_res_handled(struct p2p_data *p2p)
3517 {
3518 if (!p2p->p2p_scan_running) {
3519 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
3520 }
3521 p2p->p2p_scan_running = 0;
3522 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
3523
3524 if (p2p_run_after_scan(p2p))
3525 return;
3526 if (p2p->state == P2P_SEARCH)
3527 p2p_continue_find(p2p);
3528 }
3529
3530
3531 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id,
3532 unsigned int bands)
3533 {
3534 u8 dev_capab;
3535 u8 *len;
3536
3537 #ifdef CONFIG_WIFI_DISPLAY
3538 if (p2p->wfd_ie_probe_req)
3539 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
3540 #endif /* CONFIG_WIFI_DISPLAY */
3541
3542 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3543 wpabuf_put_buf(ies,
3544 p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3545
3546 len = p2p_buf_add_ie_hdr(ies);
3547
3548 dev_capab = p2p->dev_capab & ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3549
3550 /* P2PS requires Probe Request frames to include SD bit */
3551 if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3552 dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
3553
3554 p2p_buf_add_capability(ies, dev_capab, 0);
3555
3556 if (dev_id)
3557 p2p_buf_add_device_id(ies, dev_id);
3558 if (p2p->cfg->reg_class && p2p->cfg->channel)
3559 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
3560 p2p->cfg->reg_class,
3561 p2p->cfg->channel);
3562 if (p2p->ext_listen_interval)
3563 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
3564 p2p->ext_listen_interval);
3565
3566 if (bands & BAND_60_GHZ)
3567 p2p_buf_add_device_info(ies, p2p, NULL);
3568
3569 if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3570 p2p_buf_add_service_hash(ies, p2p);
3571
3572 /* TODO: p2p_buf_add_operating_channel() if GO */
3573 p2p_buf_update_ie_hdr(ies, len);
3574 }
3575
3576
3577 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
3578 {
3579 size_t len = 100;
3580
3581 #ifdef CONFIG_WIFI_DISPLAY
3582 if (p2p && p2p->wfd_ie_probe_req)
3583 len += wpabuf_len(p2p->wfd_ie_probe_req);
3584 #endif /* CONFIG_WIFI_DISPLAY */
3585
3586 if (p2p && p2p->vendor_elem &&
3587 p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3588 len += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3589
3590 return len;
3591 }
3592
3593
3594 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
3595 {
3596 return p2p_attr_text(p2p_ie, buf, end);
3597 }
3598
3599
3600 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
3601 {
3602 struct p2p_device *dev = p2p->go_neg_peer;
3603 int timeout;
3604
3605 p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
3606
3607 if (dev == NULL) {
3608 p2p_dbg(p2p, "No pending GO Negotiation");
3609 return;
3610 }
3611
3612 if (success) {
3613 if (dev->flags & P2P_DEV_USER_REJECTED) {
3614 p2p_set_state(p2p, P2P_IDLE);
3615 return;
3616 }
3617 } else if (dev->go_neg_req_sent) {
3618 /* Cancel the increment from p2p_connect_send() on failure */
3619 dev->go_neg_req_sent--;
3620 }
3621
3622 if (!success &&
3623 (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
3624 !is_zero_ether_addr(dev->member_in_go_dev)) {
3625 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
3626 MAC2STR(dev->info.p2p_device_addr));
3627 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3628 p2p_send_dev_disc_req(p2p, dev);
3629 return;
3630 }
3631
3632 /*
3633 * Use P2P find, if needed, to find the other device from its listen
3634 * channel.
3635 */
3636 p2p_set_state(p2p, P2P_CONNECT);
3637 timeout = success ? 500000 : 100000;
3638 if (!success && p2p->go_neg_peer &&
3639 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
3640 unsigned int r;
3641 /*
3642 * Peer is expected to wait our response and we will skip the
3643 * listen phase. Add some randomness to the wait time here to
3644 * make it less likely to hit cases where we could end up in
3645 * sync with peer not listening.
3646 */
3647 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
3648 r = 0;
3649 timeout += r % 100000;
3650 }
3651 p2p_set_timeout(p2p, 0, timeout);
3652 }
3653
3654
3655 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
3656 {
3657 p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
3658 success);
3659 if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
3660 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
3661 return;
3662 }
3663 p2p_set_state(p2p, P2P_CONNECT);
3664 p2p_set_timeout(p2p, 0, 500000);
3665 }
3666
3667
3668 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
3669 const u8 *addr)
3670 {
3671 p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
3672 if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
3673 p2p_go_neg_failed(p2p, p2p->go_neg_peer->status);
3674 return;
3675 }
3676
3677 if (success) {
3678 struct p2p_device *dev;
3679 dev = p2p_get_device(p2p, addr);
3680 if (dev &&
3681 dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
3682 dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
3683 }
3684
3685 if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND)
3686 p2p_continue_find(p2p);
3687 }
3688
3689
3690 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
3691 enum p2p_send_action_result result)
3692 {
3693 struct p2p_device *dev;
3694
3695 p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
3696 if (result == P2P_SEND_ACTION_FAILED) {
3697 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3698 p2p_go_neg_failed(p2p, -1);
3699 return;
3700 }
3701
3702 dev = p2p->go_neg_peer;
3703
3704 if (result == P2P_SEND_ACTION_NO_ACK) {
3705 /*
3706 * Retry GO Negotiation Confirmation
3707 * P2P_GO_NEG_CNF_MAX_RETRY_COUNT times if we did not receive
3708 * ACK for confirmation.
3709 */
3710 if (dev && dev->go_neg_conf &&
3711 dev->go_neg_conf_sent <= P2P_GO_NEG_CNF_MAX_RETRY_COUNT) {
3712 p2p_dbg(p2p, "GO Negotiation Confirm retry %d",
3713 dev->go_neg_conf_sent);
3714 p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM;
3715 if (p2p_send_action(p2p, dev->go_neg_conf_freq,
3716 dev->info.p2p_device_addr,
3717 p2p->cfg->dev_addr,
3718 dev->info.p2p_device_addr,
3719 wpabuf_head(dev->go_neg_conf),
3720 wpabuf_len(dev->go_neg_conf), 0) >=
3721 0) {
3722 dev->go_neg_conf_sent++;
3723 return;
3724 }
3725 p2p_dbg(p2p, "Failed to re-send Action frame");
3726
3727 /*
3728 * Continue with the assumption that the first attempt
3729 * went through and just the ACK frame was lost.
3730 */
3731 }
3732
3733 /*
3734 * It looks like the TX status for GO Negotiation Confirm is
3735 * often showing failure even when the peer has actually
3736 * received the frame. Since the peer may change channels
3737 * immediately after having received the frame, we may not see
3738 * an Ack for retries, so just dropping a single frame may
3739 * trigger this. To allow the group formation to succeed if the
3740 * peer did indeed receive the frame, continue regardless of
3741 * the TX status.
3742 */
3743 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
3744 }
3745
3746 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3747
3748 if (dev == NULL)
3749 return;
3750
3751 p2p_go_complete(p2p, dev);
3752 }
3753
3754
3755 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3756 const u8 *src, const u8 *bssid,
3757 enum p2p_send_action_result result)
3758 {
3759 enum p2p_pending_action_state state;
3760 int success;
3761
3762 p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
3763 " src=" MACSTR " bssid=" MACSTR " result=%d p2p_state=%s)",
3764 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
3765 MAC2STR(bssid), result, p2p_state_txt(p2p->state));
3766 success = result == P2P_SEND_ACTION_SUCCESS;
3767 state = p2p->pending_action_state;
3768 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3769 switch (state) {
3770 case P2P_NO_PENDING_ACTION:
3771 if (p2p->send_action_in_progress) {
3772 p2p->send_action_in_progress = 0;
3773 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3774 }
3775 p2p_check_after_scan_tx_continuation(p2p);
3776 break;
3777 case P2P_PENDING_GO_NEG_REQUEST:
3778 p2p_go_neg_req_cb(p2p, success);
3779 break;
3780 case P2P_PENDING_GO_NEG_RESPONSE:
3781 p2p_go_neg_resp_cb(p2p, success);
3782 break;
3783 case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
3784 p2p_go_neg_resp_failure_cb(p2p, success, dst);
3785 break;
3786 case P2P_PENDING_GO_NEG_CONFIRM:
3787 p2p_go_neg_conf_cb(p2p, result);
3788 break;
3789 case P2P_PENDING_SD:
3790 p2p_sd_cb(p2p, success);
3791 break;
3792 case P2P_PENDING_PD:
3793 p2p_prov_disc_cb(p2p, success);
3794 break;
3795 case P2P_PENDING_PD_RESPONSE:
3796 p2p_prov_disc_resp_cb(p2p, success);
3797 break;
3798 case P2P_PENDING_INVITATION_REQUEST:
3799 p2p_invitation_req_cb(p2p, success);
3800 break;
3801 case P2P_PENDING_INVITATION_RESPONSE:
3802 p2p_invitation_resp_cb(p2p, success);
3803 if (p2p->inv_status != P2P_SC_SUCCESS)
3804 p2p_check_after_scan_tx_continuation(p2p);
3805 break;
3806 case P2P_PENDING_DEV_DISC_REQUEST:
3807 p2p_dev_disc_req_cb(p2p, success);
3808 break;
3809 case P2P_PENDING_DEV_DISC_RESPONSE:
3810 p2p_dev_disc_resp_cb(p2p, success);
3811 break;
3812 case P2P_PENDING_GO_DISC_REQ:
3813 p2p_go_disc_req_cb(p2p, success);
3814 break;
3815 }
3816
3817 p2p->after_scan_tx_in_progress = 0;
3818 }
3819
3820
3821 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3822 unsigned int duration)
3823 {
3824 if (freq == p2p->pending_client_disc_freq) {
3825 p2p_dbg(p2p, "Client discoverability remain-awake completed");
3826 p2p->pending_client_disc_freq = 0;
3827 return;
3828 }
3829
3830 if (freq != p2p->pending_listen_freq) {
3831 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
3832 freq, duration, p2p->pending_listen_freq);
3833 return;
3834 }
3835
3836 p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
3837 p2p->pending_listen_sec, p2p->pending_listen_usec,
3838 p2p->pending_listen_freq);
3839 p2p->in_listen = 1;
3840 p2p->drv_in_listen = freq;
3841 if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3842 /*
3843 * Add 20 msec extra wait to avoid race condition with driver
3844 * remain-on-channel end event, i.e., give driver more time to
3845 * complete the operation before our timeout expires.
3846 */
3847 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3848 p2p->pending_listen_usec + 20000);
3849 }
3850
3851 p2p->pending_listen_freq = 0;
3852 }
3853
3854
3855 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3856 {
3857 p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
3858 p2p->drv_in_listen = 0;
3859 if (p2p->in_listen)
3860 return 0; /* Internal timeout will trigger the next step */
3861
3862 if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3863 if (p2p->go_neg_peer->connect_reqs >= 120) {
3864 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3865 p2p_go_neg_failed(p2p, -1);
3866 return 0;
3867 }
3868
3869 p2p_set_state(p2p, P2P_CONNECT);
3870 p2p_connect_send(p2p, p2p->go_neg_peer);
3871 return 1;
3872 } else if (p2p->state == P2P_SEARCH) {
3873 if (p2p->p2p_scan_running) {
3874 /*
3875 * Search is already in progress. This can happen if
3876 * an Action frame RX is reported immediately after
3877 * the end of a remain-on-channel operation and the
3878 * response frame to that is sent using an offchannel
3879 * operation while in p2p_find. Avoid an attempt to
3880 * restart a scan here.
3881 */
3882 p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
3883 return 1;
3884 }
3885 if (p2p->pending_listen_freq) {
3886 /*
3887 * Better wait a bit if the driver is unable to start
3888 * offchannel operation for some reason. p2p_search()
3889 * will be started from internal timeout.
3890 */
3891 p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3892 p2p_set_timeout(p2p, 0, 100000);
3893 return 1;
3894 }
3895 if (p2p->search_delay) {
3896 p2p_dbg(p2p, "Delay search operation by %u ms",
3897 p2p->search_delay);
3898 p2p_set_timeout(p2p, p2p->search_delay / 1000,
3899 (p2p->search_delay % 1000) * 1000);
3900 return 1;
3901 }
3902 p2p_search(p2p);
3903 return 1;
3904 }
3905
3906 return 0;
3907 }
3908
3909
3910 static void p2p_timeout_connect(struct p2p_data *p2p)
3911 {
3912 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3913 if (p2p->go_neg_peer &&
3914 (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3915 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
3916 p2p_go_neg_failed(p2p, -1);
3917 return;
3918 }
3919 if (p2p->go_neg_peer &&
3920 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3921 p2p->go_neg_peer->connect_reqs < 120) {
3922 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
3923 p2p_connect_send(p2p, p2p->go_neg_peer);
3924 return;
3925 }
3926 if (p2p->go_neg_peer && p2p->go_neg_peer->oob_go_neg_freq > 0) {
3927 p2p_dbg(p2p, "Skip connect-listen since GO Neg channel known (OOB)");
3928 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3929 p2p_set_timeout(p2p, 0, 30000);
3930 return;
3931 }
3932 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3933 p2p_listen_in_find(p2p, 0);
3934 }
3935
3936
3937 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3938 {
3939 if (p2p->go_neg_peer) {
3940 if (p2p->drv_in_listen) {
3941 p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
3942 return;
3943 }
3944
3945 if (p2p->go_neg_peer->connect_reqs >= 120) {
3946 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3947 p2p_go_neg_failed(p2p, -1);
3948 return;
3949 }
3950
3951 p2p_set_state(p2p, P2P_CONNECT);
3952 p2p_connect_send(p2p, p2p->go_neg_peer);
3953 } else
3954 p2p_set_state(p2p, P2P_IDLE);
3955 }
3956
3957
3958 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3959 {
3960 p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
3961
3962 if (p2p->cfg->is_concurrent_session_active &&
3963 p2p->cfg->is_concurrent_session_active(p2p->cfg->cb_ctx))
3964 p2p_set_timeout(p2p, 0, 500000);
3965 else
3966 p2p_set_timeout(p2p, 0, 200000);
3967 }
3968
3969
3970 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3971 {
3972 struct p2p_device *dev = p2p->go_neg_peer;
3973
3974 if (dev == NULL) {
3975 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
3976 return;
3977 }
3978
3979 p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
3980 p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
3981 p2p_listen_in_find(p2p, 0);
3982 }
3983
3984
3985 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3986 {
3987 p2p_dbg(p2p, "Service Discovery Query timeout");
3988 if (p2p->sd_peer) {
3989 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3990 p2p->sd_peer = NULL;
3991 }
3992 p2p_continue_find(p2p);
3993 }
3994
3995
3996 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3997 {
3998 p2p_dbg(p2p, "Provision Discovery Request timeout");
3999 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
4000 p2p_continue_find(p2p);
4001 }
4002
4003
4004 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
4005 {
4006 u32 adv_id = 0;
4007 u8 *adv_mac = NULL;
4008
4009 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4010
4011 /*
4012 * For user initiated PD requests that we have not gotten any responses
4013 * for while in IDLE state, we retry them a couple of times before
4014 * giving up.
4015 */
4016 if (!p2p->user_initiated_pd)
4017 return;
4018
4019 p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
4020
4021 if (p2p->pd_retries) {
4022 p2p->pd_retries--;
4023 p2p_retry_pd(p2p);
4024 } else {
4025 struct p2p_device *dev;
4026 int for_join = 0;
4027
4028 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
4029 if (os_memcmp(p2p->pending_pd_devaddr,
4030 dev->info.p2p_device_addr, ETH_ALEN) != 0)
4031 continue;
4032 if (dev->req_config_methods &&
4033 (dev->flags & P2P_DEV_PD_FOR_JOIN))
4034 for_join = 1;
4035 }
4036
4037 if (p2p->p2ps_prov) {
4038 adv_id = p2p->p2ps_prov->adv_id;
4039 adv_mac = p2p->p2ps_prov->adv_mac;
4040 }
4041
4042 if (p2p->cfg->prov_disc_fail)
4043 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
4044 p2p->pending_pd_devaddr,
4045 for_join ?
4046 P2P_PROV_DISC_TIMEOUT_JOIN :
4047 P2P_PROV_DISC_TIMEOUT,
4048 adv_id, adv_mac, NULL);
4049 p2p_reset_pending_pd(p2p);
4050 }
4051 }
4052
4053
4054 static void p2p_timeout_invite(struct p2p_data *p2p)
4055 {
4056 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
4057 p2p_set_state(p2p, P2P_INVITE_LISTEN);
4058 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
4059 /*
4060 * Better remain on operating channel instead of listen channel
4061 * when running a group.
4062 */
4063 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
4064 p2p_set_timeout(p2p, 0, 100000);
4065 return;
4066 }
4067 p2p_listen_in_find(p2p, 0);
4068 }
4069
4070
4071 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
4072 {
4073 if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
4074 p2p_set_state(p2p, P2P_INVITE);
4075 p2p_invite_send(p2p, p2p->invite_peer,
4076 p2p->invite_go_dev_addr, p2p->invite_dev_pw_id);
4077 } else {
4078 if (p2p->invite_peer) {
4079 p2p_dbg(p2p, "Invitation Request retry limit reached");
4080 if (p2p->cfg->invitation_result)
4081 p2p->cfg->invitation_result(
4082 p2p->cfg->cb_ctx, -1, NULL, NULL,
4083 p2p->invite_peer->info.p2p_device_addr,
4084 0, 0);
4085 }
4086 p2p_set_state(p2p, P2P_IDLE);
4087 }
4088 }
4089
4090
4091 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
4092 {
4093 struct p2p_data *p2p = eloop_ctx;
4094
4095 p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
4096
4097 p2p->in_listen = 0;
4098 if (p2p->drv_in_listen) {
4099 p2p_dbg(p2p, "Driver is still in listen state - stop it");
4100 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
4101 }
4102
4103 switch (p2p->state) {
4104 case P2P_IDLE:
4105 /* Check if we timed out waiting for PD req */
4106 if (p2p->pending_action_state == P2P_PENDING_PD)
4107 p2p_timeout_prov_disc_req(p2p);
4108 break;
4109 case P2P_SEARCH:
4110 /* Check if we timed out waiting for PD req */
4111 if (p2p->pending_action_state == P2P_PENDING_PD)
4112 p2p_timeout_prov_disc_req(p2p);
4113 if (p2p->search_delay && !p2p->in_search_delay) {
4114 p2p_dbg(p2p, "Delay search operation by %u ms",
4115 p2p->search_delay);
4116 p2p->in_search_delay = 1;
4117 p2p_set_timeout(p2p, p2p->search_delay / 1000,
4118 (p2p->search_delay % 1000) * 1000);
4119 break;
4120 }
4121 p2p->in_search_delay = 0;
4122 p2p_search(p2p);
4123 break;
4124 case P2P_CONNECT:
4125 p2p_timeout_connect(p2p);
4126 break;
4127 case P2P_CONNECT_LISTEN:
4128 p2p_timeout_connect_listen(p2p);
4129 break;
4130 case P2P_GO_NEG:
4131 break;
4132 case P2P_LISTEN_ONLY:
4133 /* Check if we timed out waiting for PD req */
4134 if (p2p->pending_action_state == P2P_PENDING_PD)
4135 p2p_timeout_prov_disc_req(p2p);
4136
4137 if (p2p->ext_listen_only) {
4138 p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
4139 p2p->ext_listen_only = 0;
4140 p2p_set_state(p2p, P2P_IDLE);
4141 }
4142 break;
4143 case P2P_WAIT_PEER_CONNECT:
4144 p2p_timeout_wait_peer_connect(p2p);
4145 break;
4146 case P2P_WAIT_PEER_IDLE:
4147 p2p_timeout_wait_peer_idle(p2p);
4148 break;
4149 case P2P_SD_DURING_FIND:
4150 p2p_timeout_sd_during_find(p2p);
4151 break;
4152 case P2P_PROVISIONING:
4153 break;
4154 case P2P_PD_DURING_FIND:
4155 p2p_timeout_prov_disc_during_find(p2p);
4156 break;
4157 case P2P_INVITE:
4158 p2p_timeout_invite(p2p);
4159 break;
4160 case P2P_INVITE_LISTEN:
4161 p2p_timeout_invite_listen(p2p);
4162 break;
4163 }
4164 }
4165
4166
4167 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
4168 {
4169 struct p2p_device *dev;
4170
4171 dev = p2p_get_device(p2p, peer_addr);
4172 p2p_dbg(p2p, "Local request to reject connection attempts by peer "
4173 MACSTR, MAC2STR(peer_addr));
4174 if (dev == NULL) {
4175 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
4176 return -1;
4177 }
4178 dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
4179 dev->flags |= P2P_DEV_USER_REJECTED;
4180 return 0;
4181 }
4182
4183
4184 const char * p2p_wps_method_text(enum p2p_wps_method method)
4185 {
4186 switch (method) {
4187 case WPS_NOT_READY:
4188 return "not-ready";
4189 case WPS_PIN_DISPLAY:
4190 return "Display";
4191 case WPS_PIN_KEYPAD:
4192 return "Keypad";
4193 case WPS_PBC:
4194 return "PBC";
4195 case WPS_NFC:
4196 return "NFC";
4197 case WPS_P2PS:
4198 return "P2PS";
4199 }
4200
4201 return "??";
4202 }
4203
4204
4205 static const char * p2p_go_state_text(enum p2p_go_state go_state)
4206 {
4207 switch (go_state) {
4208 case UNKNOWN_GO:
4209 return "unknown";
4210 case LOCAL_GO:
4211 return "local";
4212 case REMOTE_GO:
4213 return "remote";
4214 }
4215
4216 return "??";
4217 }
4218
4219
4220 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
4221 const u8 *addr, int next)
4222 {
4223 struct p2p_device *dev;
4224
4225 if (addr)
4226 dev = p2p_get_device(p2p, addr);
4227 else
4228 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4229
4230 if (dev && next) {
4231 dev = dl_list_first(&dev->list, struct p2p_device, list);
4232 if (&dev->list == &p2p->devices)
4233 dev = NULL;
4234 }
4235
4236 if (dev == NULL)
4237 return NULL;
4238
4239 return &dev->info;
4240 }
4241
4242
4243 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
4244 char *buf, size_t buflen)
4245 {
4246 struct p2p_device *dev;
4247 int res;
4248 char *pos, *end;
4249 struct os_reltime now;
4250
4251 if (info == NULL)
4252 return -1;
4253
4254 dev = (struct p2p_device *) (((u8 *) info) -
4255 offsetof(struct p2p_device, info));
4256
4257 pos = buf;
4258 end = buf + buflen;
4259
4260 os_get_reltime(&now);
4261 res = os_snprintf(pos, end - pos,
4262 "age=%d\n"
4263 "listen_freq=%d\n"
4264 "wps_method=%s\n"
4265 "interface_addr=" MACSTR "\n"
4266 "member_in_go_dev=" MACSTR "\n"
4267 "member_in_go_iface=" MACSTR "\n"
4268 "go_neg_req_sent=%d\n"
4269 "go_state=%s\n"
4270 "dialog_token=%u\n"
4271 "intended_addr=" MACSTR "\n"
4272 "country=%c%c\n"
4273 "oper_freq=%d\n"
4274 "req_config_methods=0x%x\n"
4275 "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
4276 "status=%d\n"
4277 "invitation_reqs=%u\n",
4278 (int) (now.sec - dev->last_seen.sec),
4279 dev->listen_freq,
4280 p2p_wps_method_text(dev->wps_method),
4281 MAC2STR(dev->interface_addr),
4282 MAC2STR(dev->member_in_go_dev),
4283 MAC2STR(dev->member_in_go_iface),
4284 dev->go_neg_req_sent,
4285 p2p_go_state_text(dev->go_state),
4286 dev->dialog_token,
4287 MAC2STR(dev->intended_addr),
4288 dev->country[0] ? dev->country[0] : '_',
4289 dev->country[1] ? dev->country[1] : '_',
4290 dev->oper_freq,
4291 dev->req_config_methods,
4292 dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
4293 "[PROBE_REQ_ONLY]" : "",
4294 dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
4295 dev->flags & P2P_DEV_NOT_YET_READY ?
4296 "[NOT_YET_READY]" : "",
4297 dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
4298 "[PD_PEER_DISPLAY]" : "",
4299 dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
4300 "[PD_PEER_KEYPAD]" : "",
4301 dev->flags & P2P_DEV_PD_PEER_P2PS ?
4302 "[PD_PEER_P2PS]" : "",
4303 dev->flags & P2P_DEV_USER_REJECTED ?
4304 "[USER_REJECTED]" : "",
4305 dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
4306 "[PEER_WAITING_RESPONSE]" : "",
4307 dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
4308 "[PREFER_PERSISTENT_GROUP]" : "",
4309 dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
4310 "[WAIT_GO_NEG_RESPONSE]" : "",
4311 dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
4312 "[WAIT_GO_NEG_CONFIRM]" : "",
4313 dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
4314 "[GROUP_CLIENT_ONLY]" : "",
4315 dev->flags & P2P_DEV_FORCE_FREQ ?
4316 "[FORCE_FREQ]" : "",
4317 dev->flags & P2P_DEV_PD_FOR_JOIN ?
4318 "[PD_FOR_JOIN]" : "",
4319 dev->flags & P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT ?
4320 "[LAST_SEEN_AS_GROUP_CLIENT]" : "",
4321 dev->status,
4322 dev->invitation_reqs);
4323 if (os_snprintf_error(end - pos, res))
4324 return pos - buf;
4325 pos += res;
4326
4327 if (dev->ext_listen_period) {
4328 res = os_snprintf(pos, end - pos,
4329 "ext_listen_period=%u\n"
4330 "ext_listen_interval=%u\n",
4331 dev->ext_listen_period,
4332 dev->ext_listen_interval);
4333 if (os_snprintf_error(end - pos, res))
4334 return pos - buf;
4335 pos += res;
4336 }
4337
4338 if (dev->oper_ssid_len) {
4339 res = os_snprintf(pos, end - pos,
4340 "oper_ssid=%s\n",
4341 wpa_ssid_txt(dev->oper_ssid,
4342 dev->oper_ssid_len));
4343 if (os_snprintf_error(end - pos, res))
4344 return pos - buf;
4345 pos += res;
4346 }
4347
4348 #ifdef CONFIG_WIFI_DISPLAY
4349 if (dev->info.wfd_subelems) {
4350 res = os_snprintf(pos, end - pos, "wfd_subelems=");
4351 if (os_snprintf_error(end - pos, res))
4352 return pos - buf;
4353 pos += res;
4354
4355 pos += wpa_snprintf_hex(pos, end - pos,
4356 wpabuf_head(dev->info.wfd_subelems),
4357 wpabuf_len(dev->info.wfd_subelems));
4358
4359 res = os_snprintf(pos, end - pos, "\n");
4360 if (os_snprintf_error(end - pos, res))
4361 return pos - buf;
4362 pos += res;
4363 }
4364 #endif /* CONFIG_WIFI_DISPLAY */
4365
4366 return pos - buf;
4367 }
4368
4369
4370 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
4371 {
4372 return p2p_get_device(p2p, addr) != NULL;
4373 }
4374
4375
4376 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
4377 {
4378 if (enabled) {
4379 p2p_dbg(p2p, "Client discoverability enabled");
4380 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4381 } else {
4382 p2p_dbg(p2p, "Client discoverability disabled");
4383 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4384 }
4385 }
4386
4387
4388 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
4389 u32 duration2, u32 interval2)
4390 {
4391 struct wpabuf *req;
4392 struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
4393 u8 *len;
4394
4395 req = wpabuf_alloc(100);
4396 if (req == NULL)
4397 return NULL;
4398
4399 if (duration1 || interval1) {
4400 os_memset(&desc1, 0, sizeof(desc1));
4401 desc1.count_type = 1;
4402 desc1.duration = duration1;
4403 desc1.interval = interval1;
4404 ptr1 = &desc1;
4405
4406 if (duration2 || interval2) {
4407 os_memset(&desc2, 0, sizeof(desc2));
4408 desc2.count_type = 2;
4409 desc2.duration = duration2;
4410 desc2.interval = interval2;
4411 ptr2 = &desc2;
4412 }
4413 }
4414
4415 p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
4416 len = p2p_buf_add_ie_hdr(req);
4417 p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
4418 p2p_buf_update_ie_hdr(req, len);
4419
4420 return req;
4421 }
4422
4423
4424 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
4425 const u8 *own_interface_addr, unsigned int freq,
4426 u32 duration1, u32 interval1, u32 duration2,
4427 u32 interval2)
4428 {
4429 struct wpabuf *req;
4430
4431 p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
4432 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
4433 "dur2=%u int2=%u",
4434 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
4435 freq, duration1, interval1, duration2, interval2);
4436
4437 req = p2p_build_presence_req(duration1, interval1, duration2,
4438 interval2);
4439 if (req == NULL)
4440 return -1;
4441
4442 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4443 if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
4444 go_interface_addr,
4445 wpabuf_head(req), wpabuf_len(req), 200) < 0) {
4446 p2p_dbg(p2p, "Failed to send Action frame");
4447 }
4448 wpabuf_free(req);
4449
4450 return 0;
4451 }
4452
4453
4454 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
4455 size_t noa_len, u8 dialog_token)
4456 {
4457 struct wpabuf *resp;
4458 u8 *len;
4459
4460 resp = wpabuf_alloc(100 + noa_len);
4461 if (resp == NULL)
4462 return NULL;
4463
4464 p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
4465 len = p2p_buf_add_ie_hdr(resp);
4466 p2p_buf_add_status(resp, status);
4467 if (noa) {
4468 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
4469 wpabuf_put_le16(resp, noa_len);
4470 wpabuf_put_data(resp, noa, noa_len);
4471 } else
4472 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
4473 p2p_buf_update_ie_hdr(resp, len);
4474
4475 return resp;
4476 }
4477
4478
4479 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
4480 const u8 *sa, const u8 *data, size_t len,
4481 int rx_freq)
4482 {
4483 struct p2p_message msg;
4484 u8 status;
4485 struct wpabuf *resp;
4486 size_t g;
4487 struct p2p_group *group = NULL;
4488 int parsed = 0;
4489 u8 noa[50];
4490 int noa_len;
4491
4492 p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
4493
4494 for (g = 0; g < p2p->num_groups; g++) {
4495 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
4496 ETH_ALEN) == 0) {
4497 group = p2p->groups[g];
4498 break;
4499 }
4500 }
4501 if (group == NULL) {
4502 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
4503 MACSTR, MAC2STR(da));
4504 return;
4505 }
4506
4507 if (p2p_parse(data, len, &msg) < 0) {
4508 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
4509 status = P2P_SC_FAIL_INVALID_PARAMS;
4510 goto fail;
4511 }
4512 parsed = 1;
4513
4514 if (msg.noa == NULL) {
4515 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
4516 status = P2P_SC_FAIL_INVALID_PARAMS;
4517 goto fail;
4518 }
4519
4520 status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
4521
4522 fail:
4523 if (p2p->cfg->get_noa)
4524 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
4525 sizeof(noa));
4526 else
4527 noa_len = -1;
4528 resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
4529 noa_len > 0 ? noa_len : 0,
4530 msg.dialog_token);
4531 if (parsed)
4532 p2p_parse_free(&msg);
4533 if (resp == NULL)
4534 return;
4535
4536 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4537 if (p2p_send_action(p2p, rx_freq, sa, da, da,
4538 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
4539 p2p_dbg(p2p, "Failed to send Action frame");
4540 }
4541 wpabuf_free(resp);
4542 }
4543
4544
4545 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
4546 const u8 *sa, const u8 *data, size_t len)
4547 {
4548 struct p2p_message msg;
4549
4550 p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
4551
4552 if (p2p_parse(data, len, &msg) < 0) {
4553 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
4554 return;
4555 }
4556
4557 if (msg.status == NULL || msg.noa == NULL) {
4558 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
4559 p2p_parse_free(&msg);
4560 return;
4561 }
4562
4563 if (p2p->cfg->presence_resp) {
4564 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status,
4565 msg.noa, msg.noa_len);
4566 }
4567
4568 if (*msg.status) {
4569 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
4570 *msg.status);
4571 p2p_parse_free(&msg);
4572 return;
4573 }
4574
4575 p2p_dbg(p2p, "P2P Presence Request was accepted");
4576 wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
4577 msg.noa, msg.noa_len);
4578 /* TODO: process NoA */
4579 p2p_parse_free(&msg);
4580 }
4581
4582
4583 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
4584 {
4585 struct p2p_data *p2p = eloop_ctx;
4586
4587 if (p2p->ext_listen_interval) {
4588 /* Schedule next extended listen timeout */
4589 eloop_register_timeout(p2p->ext_listen_interval_sec,
4590 p2p->ext_listen_interval_usec,
4591 p2p_ext_listen_timeout, p2p, NULL);
4592 }
4593
4594 if ((p2p->cfg->is_p2p_in_progress &&
4595 p2p->cfg->is_p2p_in_progress(p2p->cfg->cb_ctx)) ||
4596 (p2p->pending_action_state == P2P_PENDING_PD &&
4597 p2p->pd_retries > 0)) {
4598 p2p_dbg(p2p, "Operation in progress - skip Extended Listen timeout (%s)",
4599 p2p_state_txt(p2p->state));
4600 return;
4601 }
4602
4603 if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
4604 /*
4605 * This should not really happen, but it looks like the Listen
4606 * command may fail is something else (e.g., a scan) was
4607 * running at an inconvenient time. As a workaround, allow new
4608 * Extended Listen operation to be started.
4609 */
4610 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
4611 p2p->ext_listen_only = 0;
4612 p2p_set_state(p2p, P2P_IDLE);
4613 }
4614
4615 if (p2p->state != P2P_IDLE) {
4616 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
4617 return;
4618 }
4619
4620 p2p_dbg(p2p, "Extended Listen timeout");
4621 p2p->ext_listen_only = 1;
4622 if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
4623 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
4624 p2p->ext_listen_only = 0;
4625 }
4626 }
4627
4628
4629 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
4630 unsigned int interval)
4631 {
4632 if (period > 65535 || interval > 65535 || period > interval ||
4633 (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
4634 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
4635 period, interval);
4636 return -1;
4637 }
4638
4639 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
4640
4641 if (interval == 0) {
4642 p2p_dbg(p2p, "Disabling Extended Listen Timing");
4643 p2p->ext_listen_period = 0;
4644 p2p->ext_listen_interval = 0;
4645 return 0;
4646 }
4647
4648 p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
4649 period, interval);
4650 p2p->ext_listen_period = period;
4651 p2p->ext_listen_interval = interval;
4652 p2p->ext_listen_interval_sec = interval / 1000;
4653 p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
4654
4655 eloop_register_timeout(p2p->ext_listen_interval_sec,
4656 p2p->ext_listen_interval_usec,
4657 p2p_ext_listen_timeout, p2p, NULL);
4658
4659 return 0;
4660 }
4661
4662
4663 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4664 const u8 *ie, size_t ie_len)
4665 {
4666 struct p2p_message msg;
4667
4668 if (bssid == NULL || ie == NULL)
4669 return;
4670
4671 os_memset(&msg, 0, sizeof(msg));
4672 if (p2p_parse_ies(ie, ie_len, &msg))
4673 return;
4674 if (msg.minor_reason_code == NULL) {
4675 p2p_parse_free(&msg);
4676 return;
4677 }
4678
4679 p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
4680 " reason_code=%u minor_reason_code=%u",
4681 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4682
4683 p2p_parse_free(&msg);
4684 }
4685
4686
4687 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4688 const u8 *ie, size_t ie_len)
4689 {
4690 struct p2p_message msg;
4691
4692 if (bssid == NULL || ie == NULL)
4693 return;
4694
4695 os_memset(&msg, 0, sizeof(msg));
4696 if (p2p_parse_ies(ie, ie_len, &msg))
4697 return;
4698 if (msg.minor_reason_code == NULL) {
4699 p2p_parse_free(&msg);
4700 return;
4701 }
4702
4703 p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
4704 " reason_code=%u minor_reason_code=%u",
4705 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4706
4707 p2p_parse_free(&msg);
4708 }
4709
4710
4711 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
4712 {
4713 if (enabled) {
4714 p2p_dbg(p2p, "Managed P2P Device operations enabled");
4715 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
4716 } else {
4717 p2p_dbg(p2p, "Managed P2P Device operations disabled");
4718 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
4719 }
4720 }
4721
4722
4723 int p2p_config_get_random_social(struct p2p_config *p2p, u8 *op_class,
4724 u8 *op_channel)
4725 {
4726 return p2p_channel_random_social(&p2p->channels, op_class, op_channel);
4727 }
4728
4729
4730 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel,
4731 u8 forced)
4732 {
4733 if (p2p_channel_to_freq(reg_class, channel) < 0)
4734 return -1;
4735
4736 /*
4737 * Listen channel was set in configuration or set by control interface;
4738 * cannot override it.
4739 */
4740 if (p2p->cfg->channel_forced && forced == 0) {
4741 p2p_dbg(p2p,
4742 "Listen channel was previously configured - do not override based on optimization");
4743 return -1;
4744 }
4745
4746 p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
4747 reg_class, channel);
4748
4749 if (p2p->state == P2P_IDLE) {
4750 p2p->cfg->reg_class = reg_class;
4751 p2p->cfg->channel = channel;
4752 p2p->cfg->channel_forced = forced;
4753 } else {
4754 p2p_dbg(p2p, "Defer setting listen channel");
4755 p2p->pending_reg_class = reg_class;
4756 p2p->pending_channel = channel;
4757 p2p->pending_channel_forced = forced;
4758 }
4759
4760 return 0;
4761 }
4762
4763
4764 u8 p2p_get_listen_channel(struct p2p_data *p2p)
4765 {
4766 return p2p->cfg->channel;
4767 }
4768
4769
4770 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
4771 {
4772 p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
4773 if (postfix == NULL) {
4774 p2p->cfg->ssid_postfix_len = 0;
4775 return 0;
4776 }
4777 if (len > sizeof(p2p->cfg->ssid_postfix))
4778 return -1;
4779 os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
4780 p2p->cfg->ssid_postfix_len = len;
4781 return 0;
4782 }
4783
4784
4785 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
4786 int cfg_op_channel)
4787 {
4788 if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
4789 return -1;
4790
4791 p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
4792 op_reg_class, op_channel);
4793 p2p->cfg->op_reg_class = op_reg_class;
4794 p2p->cfg->op_channel = op_channel;
4795 p2p->cfg->cfg_op_channel = cfg_op_channel;
4796 return 0;
4797 }
4798
4799
4800 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
4801 const struct p2p_channel *pref_chan)
4802 {
4803 struct p2p_channel *n;
4804
4805 if (pref_chan) {
4806 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
4807 if (n == NULL)
4808 return -1;
4809 os_memcpy(n, pref_chan,
4810 num_pref_chan * sizeof(struct p2p_channel));
4811 } else
4812 n = NULL;
4813
4814 os_free(p2p->cfg->pref_chan);
4815 p2p->cfg->pref_chan = n;
4816 p2p->cfg->num_pref_chan = num_pref_chan;
4817
4818 return 0;
4819 }
4820
4821
4822 int p2p_set_no_go_freq(struct p2p_data *p2p,
4823 const struct wpa_freq_range_list *list)
4824 {
4825 struct wpa_freq_range *tmp;
4826
4827 if (list == NULL || list->num == 0) {
4828 os_free(p2p->no_go_freq.range);
4829 p2p->no_go_freq.range = NULL;
4830 p2p->no_go_freq.num = 0;
4831 return 0;
4832 }
4833
4834 tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
4835 if (tmp == NULL)
4836 return -1;
4837 os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
4838 os_free(p2p->no_go_freq.range);
4839 p2p->no_go_freq.range = tmp;
4840 p2p->no_go_freq.num = list->num;
4841 p2p_dbg(p2p, "Updated no GO chan list");
4842
4843 return 0;
4844 }
4845
4846
4847 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4848 u8 *iface_addr)
4849 {
4850 struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4851 if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4852 return -1;
4853 os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4854 return 0;
4855 }
4856
4857
4858 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4859 u8 *dev_addr)
4860 {
4861 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4862 if (dev == NULL)
4863 return -1;
4864 os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4865 return 0;
4866 }
4867
4868
4869 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4870 {
4871 os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4872 if (is_zero_ether_addr(p2p->peer_filter))
4873 p2p_dbg(p2p, "Disable peer filter");
4874 else
4875 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4876 MAC2STR(p2p->peer_filter));
4877 }
4878
4879
4880 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4881 {
4882 p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
4883 if (p2p->cross_connect == enabled)
4884 return;
4885 p2p->cross_connect = enabled;
4886 /* TODO: may need to tear down any action group where we are GO(?) */
4887 }
4888
4889
4890 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4891 {
4892 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4893 if (dev == NULL)
4894 return -1;
4895 if (dev->oper_freq <= 0)
4896 return -1;
4897 return dev->oper_freq;
4898 }
4899
4900
4901 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4902 {
4903 p2p_dbg(p2p, "Intra BSS distribution %s",
4904 enabled ? "enabled" : "disabled");
4905 p2p->cfg->p2p_intra_bss = enabled;
4906 }
4907
4908
4909 void p2p_update_channel_list(struct p2p_data *p2p,
4910 const struct p2p_channels *chan,
4911 const struct p2p_channels *cli_chan)
4912 {
4913 p2p_dbg(p2p, "Update channel list");
4914 os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4915 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4916 os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4917 sizeof(struct p2p_channels));
4918 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
4919 }
4920
4921
4922 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4923 const u8 *src, const u8 *bssid, const u8 *buf,
4924 size_t len, unsigned int wait_time)
4925 {
4926 if (p2p->p2p_scan_running) {
4927 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
4928 if (p2p->after_scan_tx) {
4929 p2p_dbg(p2p, "Dropped previous pending Action frame TX");
4930 os_free(p2p->after_scan_tx);
4931 }
4932 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4933 len);
4934 if (p2p->after_scan_tx == NULL)
4935 return -1;
4936 p2p->after_scan_tx->freq = freq;
4937 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4938 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4939 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4940 p2p->after_scan_tx->len = len;
4941 p2p->after_scan_tx->wait_time = wait_time;
4942 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4943 return 0;
4944 }
4945
4946 return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4947 buf, len, wait_time);
4948 }
4949
4950
4951 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4952 int freq_overall)
4953 {
4954 p2p_dbg(p2p, "Best channel: 2.4 GHz: %d, 5 GHz: %d, overall: %d",
4955 freq_24, freq_5, freq_overall);
4956 p2p->best_freq_24 = freq_24;
4957 p2p->best_freq_5 = freq_5;
4958 p2p->best_freq_overall = freq_overall;
4959 }
4960
4961
4962 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4963 {
4964 p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
4965 p2p->own_freq_preference = freq;
4966 }
4967
4968
4969 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4970 {
4971 if (p2p == NULL || p2p->go_neg_peer == NULL)
4972 return NULL;
4973 return p2p->go_neg_peer->info.p2p_device_addr;
4974 }
4975
4976
4977 const struct p2p_peer_info *
4978 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4979 {
4980 struct p2p_device *dev;
4981
4982 if (addr) {
4983 dev = p2p_get_device(p2p, addr);
4984 if (!dev)
4985 return NULL;
4986
4987 if (!next) {
4988 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4989 return NULL;
4990
4991 return &dev->info;
4992 } else {
4993 do {
4994 dev = dl_list_first(&dev->list,
4995 struct p2p_device,
4996 list);
4997 if (!dev || &dev->list == &p2p->devices)
4998 return NULL;
4999 } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
5000 }
5001 } else {
5002 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
5003 if (!dev)
5004 return NULL;
5005 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
5006 dev = dl_list_first(&dev->list,
5007 struct p2p_device,
5008 list);
5009 if (!dev || &dev->list == &p2p->devices)
5010 return NULL;
5011 }
5012 }
5013
5014 return &dev->info;
5015 }
5016
5017
5018 int p2p_in_progress(struct p2p_data *p2p)
5019 {
5020 if (p2p == NULL)
5021 return 0;
5022 if (p2p->state == P2P_SEARCH)
5023 return 2;
5024 return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
5025 }
5026
5027
5028 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
5029 u8 client_timeout)
5030 {
5031 if (p2p) {
5032 p2p->go_timeout = go_timeout;
5033 p2p->client_timeout = client_timeout;
5034 }
5035 }
5036
5037
5038 #ifdef CONFIG_WIFI_DISPLAY
5039
5040 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
5041 {
5042 size_t g;
5043 struct p2p_group *group;
5044
5045 for (g = 0; g < p2p->num_groups; g++) {
5046 group = p2p->groups[g];
5047 p2p_group_force_beacon_update_ies(group);
5048 }
5049 }
5050
5051
5052 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
5053 {
5054 wpabuf_free(p2p->wfd_ie_beacon);
5055 p2p->wfd_ie_beacon = ie;
5056 p2p_update_wfd_ie_groups(p2p);
5057 return 0;
5058 }
5059
5060
5061 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
5062 {
5063 wpabuf_free(p2p->wfd_ie_probe_req);
5064 p2p->wfd_ie_probe_req = ie;
5065 return 0;
5066 }
5067
5068
5069 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
5070 {
5071 wpabuf_free(p2p->wfd_ie_probe_resp);
5072 p2p->wfd_ie_probe_resp = ie;
5073 p2p_update_wfd_ie_groups(p2p);
5074 return 0;
5075 }
5076
5077
5078 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
5079 {
5080 wpabuf_free(p2p->wfd_ie_assoc_req);
5081 p2p->wfd_ie_assoc_req = ie;
5082 return 0;
5083 }
5084
5085
5086 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
5087 {
5088 wpabuf_free(p2p->wfd_ie_invitation);
5089 p2p->wfd_ie_invitation = ie;
5090 return 0;
5091 }
5092
5093
5094 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
5095 {
5096 wpabuf_free(p2p->wfd_ie_prov_disc_req);
5097 p2p->wfd_ie_prov_disc_req = ie;
5098 return 0;
5099 }
5100
5101
5102 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
5103 {
5104 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
5105 p2p->wfd_ie_prov_disc_resp = ie;
5106 return 0;
5107 }
5108
5109
5110 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
5111 {
5112 wpabuf_free(p2p->wfd_ie_go_neg);
5113 p2p->wfd_ie_go_neg = ie;
5114 return 0;
5115 }
5116
5117
5118 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
5119 {
5120 wpabuf_free(p2p->wfd_dev_info);
5121 if (elem) {
5122 p2p->wfd_dev_info = wpabuf_dup(elem);
5123 if (p2p->wfd_dev_info == NULL)
5124 return -1;
5125 } else
5126 p2p->wfd_dev_info = NULL;
5127
5128 return 0;
5129 }
5130
5131
5132 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
5133 {
5134 wpabuf_free(p2p->wfd_assoc_bssid);
5135 if (elem) {
5136 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
5137 if (p2p->wfd_assoc_bssid == NULL)
5138 return -1;
5139 } else
5140 p2p->wfd_assoc_bssid = NULL;
5141
5142 return 0;
5143 }
5144
5145
5146 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
5147 const struct wpabuf *elem)
5148 {
5149 wpabuf_free(p2p->wfd_coupled_sink_info);
5150 if (elem) {
5151 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
5152 if (p2p->wfd_coupled_sink_info == NULL)
5153 return -1;
5154 } else
5155 p2p->wfd_coupled_sink_info = NULL;
5156
5157 return 0;
5158 }
5159
5160 #endif /* CONFIG_WIFI_DISPLAY */
5161
5162
5163 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
5164 int max_disc_tu)
5165 {
5166 if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
5167 return -1;
5168
5169 p2p->min_disc_int = min_disc_int;
5170 p2p->max_disc_int = max_disc_int;
5171 p2p->max_disc_tu = max_disc_tu;
5172 p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
5173 min_disc_int, max_disc_int, max_disc_tu);
5174
5175 return 0;
5176 }
5177
5178
5179 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
5180 {
5181 va_list ap;
5182 char buf[500];
5183
5184 if (!p2p->cfg->debug_print)
5185 return;
5186
5187 va_start(ap, fmt);
5188 vsnprintf(buf, sizeof(buf), fmt, ap);
5189 buf[sizeof(buf) - 1] = '\0';
5190 va_end(ap);
5191 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
5192 }
5193
5194
5195 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
5196 {
5197 va_list ap;
5198 char buf[500];
5199
5200 if (!p2p->cfg->debug_print)
5201 return;
5202
5203 va_start(ap, fmt);
5204 vsnprintf(buf, sizeof(buf), fmt, ap);
5205 buf[sizeof(buf) - 1] = '\0';
5206 va_end(ap);
5207 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
5208 }
5209
5210
5211 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
5212 {
5213 va_list ap;
5214 char buf[500];
5215
5216 if (!p2p->cfg->debug_print)
5217 return;
5218
5219 va_start(ap, fmt);
5220 vsnprintf(buf, sizeof(buf), fmt, ap);
5221 buf[sizeof(buf) - 1] = '\0';
5222 va_end(ap);
5223 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
5224 }
5225
5226
5227 void p2p_loop_on_known_peers(struct p2p_data *p2p,
5228 void (*peer_callback)(struct p2p_peer_info *peer,
5229 void *user_data),
5230 void *user_data)
5231 {
5232 struct p2p_device *dev, *n;
5233
5234 dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
5235 peer_callback(&dev->info, user_data);
5236 }
5237 }
5238
5239
5240 #ifdef CONFIG_WPS_NFC
5241
5242 static struct wpabuf * p2p_build_nfc_handover(struct p2p_data *p2p,
5243 int client_freq,
5244 const u8 *go_dev_addr,
5245 const u8 *ssid, size_t ssid_len)
5246 {
5247 struct wpabuf *buf;
5248 u8 op_class, channel;
5249 enum p2p_role_indication role = P2P_DEVICE_NOT_IN_GROUP;
5250
5251 buf = wpabuf_alloc(1000);
5252 if (buf == NULL)
5253 return NULL;
5254
5255 op_class = p2p->cfg->reg_class;
5256 channel = p2p->cfg->channel;
5257
5258 p2p_buf_add_capability(buf, p2p->dev_capab &
5259 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
5260 p2p_buf_add_device_info(buf, p2p, NULL);
5261
5262 if (p2p->num_groups > 0) {
5263 int freq = p2p_group_get_freq(p2p->groups[0]);
5264 role = P2P_GO_IN_A_GROUP;
5265 if (p2p_freq_to_channel(freq, &op_class, &channel) < 0) {
5266 p2p_dbg(p2p,
5267 "Unknown GO operating frequency %d MHz for NFC handover",
5268 freq);
5269 wpabuf_free(buf);
5270 return NULL;
5271 }
5272 } else if (client_freq > 0) {
5273 role = P2P_CLIENT_IN_A_GROUP;
5274 if (p2p_freq_to_channel(client_freq, &op_class, &channel) < 0) {
5275 p2p_dbg(p2p,
5276 "Unknown client operating frequency %d MHz for NFC handover",
5277 client_freq);
5278 wpabuf_free(buf);
5279 return NULL;
5280 }
5281 }
5282
5283 p2p_buf_add_oob_go_neg_channel(buf, p2p->cfg->country, op_class,
5284 channel, role);
5285
5286 if (p2p->num_groups > 0) {
5287 /* Limit number of clients to avoid very long message */
5288 p2p_buf_add_group_info(p2p->groups[0], buf, 5);
5289 p2p_group_buf_add_id(p2p->groups[0], buf);
5290 } else if (client_freq > 0 &&
5291 go_dev_addr && !is_zero_ether_addr(go_dev_addr) &&
5292 ssid && ssid_len > 0) {
5293 /*
5294 * Add the optional P2P Group ID to indicate in which group this
5295 * device is a P2P Client.
5296 */
5297 p2p_buf_add_group_id(buf, go_dev_addr, ssid, ssid_len);
5298 }
5299
5300 return buf;
5301 }
5302
5303
5304 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
5305 int client_freq,
5306 const u8 *go_dev_addr,
5307 const u8 *ssid, size_t ssid_len)
5308 {
5309 return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5310 ssid_len);
5311 }
5312
5313
5314 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
5315 int client_freq,
5316 const u8 *go_dev_addr,
5317 const u8 *ssid, size_t ssid_len)
5318 {
5319 return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5320 ssid_len);
5321 }
5322
5323
5324 int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
5325 struct p2p_nfc_params *params)
5326 {
5327 struct p2p_message msg;
5328 struct p2p_device *dev;
5329 const u8 *p2p_dev_addr;
5330 int freq;
5331 enum p2p_role_indication role;
5332
5333 params->next_step = NO_ACTION;
5334
5335 if (p2p_parse_ies_separate(params->wsc_attr, params->wsc_len,
5336 params->p2p_attr, params->p2p_len, &msg)) {
5337 p2p_dbg(p2p, "Failed to parse WSC/P2P attributes from NFC");
5338 p2p_parse_free(&msg);
5339 return -1;
5340 }
5341
5342 if (msg.p2p_device_addr)
5343 p2p_dev_addr = msg.p2p_device_addr;
5344 else if (msg.device_id)
5345 p2p_dev_addr = msg.device_id;
5346 else {
5347 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
5348 p2p_parse_free(&msg);
5349 return -1;
5350 }
5351
5352 if (msg.oob_dev_password) {
5353 os_memcpy(params->oob_dev_pw, msg.oob_dev_password,
5354 msg.oob_dev_password_len);
5355 params->oob_dev_pw_len = msg.oob_dev_password_len;
5356 }
5357
5358 dev = p2p_create_device(p2p, p2p_dev_addr);
5359 if (dev == NULL) {
5360 p2p_parse_free(&msg);
5361 return -1;
5362 }
5363
5364 params->peer = &dev->info;
5365
5366 os_get_reltime(&dev->last_seen);
5367 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
5368 p2p_copy_wps_info(p2p, dev, 0, &msg);
5369
5370 if (!msg.oob_go_neg_channel) {
5371 p2p_dbg(p2p, "OOB GO Negotiation Channel attribute not included");
5372 p2p_parse_free(&msg);
5373 return -1;
5374 }
5375
5376 if (msg.oob_go_neg_channel[3] == 0 &&
5377 msg.oob_go_neg_channel[4] == 0)
5378 freq = 0;
5379 else
5380 freq = p2p_channel_to_freq(msg.oob_go_neg_channel[3],
5381 msg.oob_go_neg_channel[4]);
5382 if (freq < 0) {
5383 p2p_dbg(p2p, "Unknown peer OOB GO Neg channel");
5384 p2p_parse_free(&msg);
5385 return -1;
5386 }
5387 role = msg.oob_go_neg_channel[5];
5388
5389 if (role == P2P_GO_IN_A_GROUP) {
5390 p2p_dbg(p2p, "Peer OOB GO operating channel: %u MHz", freq);
5391 params->go_freq = freq;
5392 } else if (role == P2P_CLIENT_IN_A_GROUP) {
5393 p2p_dbg(p2p, "Peer (client) OOB GO operating channel: %u MHz",
5394 freq);
5395 params->go_freq = freq;
5396 } else
5397 p2p_dbg(p2p, "Peer OOB GO Neg channel: %u MHz", freq);
5398 dev->oob_go_neg_freq = freq;
5399
5400 if (!params->sel && role != P2P_GO_IN_A_GROUP) {
5401 freq = p2p_channel_to_freq(p2p->cfg->reg_class,
5402 p2p->cfg->channel);
5403 if (freq < 0) {
5404 p2p_dbg(p2p, "Own listen channel not known");
5405 p2p_parse_free(&msg);
5406 return -1;
5407 }
5408 p2p_dbg(p2p, "Use own Listen channel as OOB GO Neg channel: %u MHz", freq);
5409 dev->oob_go_neg_freq = freq;
5410 }
5411
5412 if (msg.group_id) {
5413 os_memcpy(params->go_dev_addr, msg.group_id, ETH_ALEN);
5414 params->go_ssid_len = msg.group_id_len - ETH_ALEN;
5415 os_memcpy(params->go_ssid, msg.group_id + ETH_ALEN,
5416 params->go_ssid_len);
5417 }
5418
5419 if (dev->flags & P2P_DEV_USER_REJECTED) {
5420 p2p_dbg(p2p, "Do not report rejected device");
5421 p2p_parse_free(&msg);
5422 return 0;
5423 }
5424
5425 if (!(dev->flags & P2P_DEV_REPORTED)) {
5426 p2p->cfg->dev_found(p2p->cfg->cb_ctx, p2p_dev_addr, &dev->info,
5427 !(dev->flags & P2P_DEV_REPORTED_ONCE));
5428 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
5429 }
5430 p2p_parse_free(&msg);
5431
5432 if (role == P2P_GO_IN_A_GROUP && p2p->num_groups > 0)
5433 params->next_step = BOTH_GO;
5434 else if (role == P2P_GO_IN_A_GROUP)
5435 params->next_step = JOIN_GROUP;
5436 else if (role == P2P_CLIENT_IN_A_GROUP) {
5437 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
5438 params->next_step = PEER_CLIENT;
5439 } else if (p2p->num_groups > 0)
5440 params->next_step = AUTH_JOIN;
5441 else if (params->sel)
5442 params->next_step = INIT_GO_NEG;
5443 else
5444 params->next_step = RESP_GO_NEG;
5445
5446 return 0;
5447 }
5448
5449
5450 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
5451 int go_intent,
5452 const u8 *own_interface_addr)
5453 {
5454
5455 p2p->authorized_oob_dev_pw_id = dev_pw_id;
5456 if (dev_pw_id == 0) {
5457 p2p_dbg(p2p, "NFC OOB Password unauthorized for static handover");
5458 return;
5459 }
5460
5461 p2p_dbg(p2p, "NFC OOB Password (id=%u) authorized for static handover",
5462 dev_pw_id);
5463
5464 p2p->go_intent = go_intent;
5465 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
5466 }
5467
5468 #endif /* CONFIG_WPS_NFC */
5469
5470
5471 int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len)
5472 {
5473 if (len < 8 || len > 63)
5474 return -1;
5475 p2p->cfg->passphrase_len = len;
5476 return 0;
5477 }
5478
5479
5480 void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem)
5481 {
5482 p2p->vendor_elem = vendor_elem;
5483 }
5484
5485
5486 void p2p_go_neg_wait_timeout(void *eloop_ctx, void *timeout_ctx)
5487 {
5488 struct p2p_data *p2p = eloop_ctx;
5489
5490 p2p_dbg(p2p,
5491 "Timeout on waiting peer to become ready for GO Negotiation");
5492 p2p_go_neg_failed(p2p, -1);
5493 }
5494
5495
5496 void p2p_set_own_pref_freq_list(struct p2p_data *p2p,
5497 const unsigned int *pref_freq_list,
5498 unsigned int size)
5499 {
5500 unsigned int i;
5501
5502 if (size > P2P_MAX_PREF_CHANNELS)
5503 size = P2P_MAX_PREF_CHANNELS;
5504 p2p->num_pref_freq = size;
5505 for (i = 0; i < size; i++) {
5506 p2p->pref_freq_list[i] = pref_freq_list[i];
5507 p2p_dbg(p2p, "Own preferred frequency list[%u]=%u MHz",
5508 i, p2p->pref_freq_list[i]);
5509 }
5510 }
5511
5512
5513 struct wpabuf * p2p_build_probe_resp_template(struct p2p_data *p2p,
5514 unsigned int freq)
5515 {
5516 struct wpabuf *ies, *buf;
5517 u8 addr[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
5518 int ret;
5519
5520 ies = p2p_build_probe_resp_ies(p2p, NULL, 0);
5521 if (!ies) {
5522 wpa_printf(MSG_ERROR,
5523 "CTRL: Failed to build Probe Response IEs");
5524 return NULL;
5525 }
5526
5527 buf = wpabuf_alloc(200 + wpabuf_len(ies));
5528 if (!buf) {
5529 wpabuf_free(ies);
5530 return NULL;
5531 }
5532
5533 ret = p2p_build_probe_resp_buf(p2p, buf, ies, addr, freq);
5534 wpabuf_free(ies);
5535 if (ret) {
5536 wpabuf_free(buf);
5537 return NULL;
5538 }
5539
5540 return buf;
5541 }
Unnamed repository; edit this file 'description' to name the repository.