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
p2p_expire_peers(struct p2p_data * p2p)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
p2p_state_txt(int state)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
p2p_get_state_txt(struct p2p_data * p2p)141 const char * p2p_get_state_txt(struct p2p_data *p2p)
142 {
143 return p2p_state_txt(p2p->state);
144 }
145
146
p2p_get_p2ps_adv_list(struct p2p_data * p2p)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
p2p_set_intended_addr(struct p2p_data * p2p,const u8 * intended_addr)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
p2p_get_provisioning_info(struct p2p_data * p2p,const u8 * addr)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
p2p_clear_provisioning_info(struct p2p_data * p2p,const u8 * addr)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
p2p_set_state(struct p2p_data * p2p,int new_state)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
p2p_set_timeout(struct p2p_data * p2p,unsigned int sec,unsigned int usec)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
p2p_clear_timeout(struct p2p_data * p2p)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
p2p_go_neg_failed(struct p2p_data * p2p,int status)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
p2p_listen_in_find(struct p2p_data * p2p,int dev_disc)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 } else {
304 p2p->pending_listen_wait_drv = true;
305 }
306 wpabuf_free(ies);
307 }
308
309
p2p_listen(struct p2p_data * p2p,unsigned int timeout)310 int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
311 {
312 int freq;
313 struct wpabuf *ies;
314
315 p2p_dbg(p2p, "Going to listen(only) state");
316
317 if (p2p->pending_listen_freq) {
318 /* We have a pending p2p_listen request */
319 p2p_dbg(p2p, "p2p_listen command pending already");
320 return -1;
321 }
322
323 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
324 if (freq < 0) {
325 p2p_dbg(p2p, "Unknown regulatory class/channel");
326 return -1;
327 }
328
329 p2p->pending_listen_sec = timeout / 1000;
330 p2p->pending_listen_usec = (timeout % 1000) * 1000;
331
332 if (p2p->p2p_scan_running) {
333 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) {
334 p2p_dbg(p2p, "p2p_scan running - connect is already pending - skip listen");
335 return 0;
336 }
337 p2p_dbg(p2p, "p2p_scan running - delay start of listen state");
338 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
339 return 0;
340 }
341
342 ies = p2p_build_probe_resp_ies(p2p, NULL, 0);
343 if (ies == NULL)
344 return -1;
345
346 p2p->pending_listen_freq = freq;
347
348 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
349 p2p_dbg(p2p, "Failed to start listen mode");
350 p2p->pending_listen_freq = 0;
351 wpabuf_free(ies);
352 return -1;
353 }
354 p2p->pending_listen_wait_drv = true;
355 wpabuf_free(ies);
356
357 p2p_set_state(p2p, P2P_LISTEN_ONLY);
358
359 return 0;
360 }
361
362
p2p_device_clear_reported(struct p2p_data * p2p)363 static void p2p_device_clear_reported(struct p2p_data *p2p)
364 {
365 struct p2p_device *dev;
366 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
367 dev->flags &= ~P2P_DEV_REPORTED;
368 dev->sd_reqs = 0;
369 }
370 }
371
372
373 /**
374 * p2p_get_device - Fetch a peer entry
375 * @p2p: P2P module context from p2p_init()
376 * @addr: P2P Device Address of the peer
377 * Returns: Pointer to the device entry or %NULL if not found
378 */
p2p_get_device(struct p2p_data * p2p,const u8 * addr)379 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
380 {
381 struct p2p_device *dev;
382 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
383 if (ether_addr_equal(dev->info.p2p_device_addr, addr))
384 return dev;
385 }
386 return NULL;
387 }
388
389
390 /**
391 * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
392 * @p2p: P2P module context from p2p_init()
393 * @addr: P2P Interface Address of the peer
394 * Returns: Pointer to the device entry or %NULL if not found
395 */
p2p_get_device_interface(struct p2p_data * p2p,const u8 * addr)396 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
397 const u8 *addr)
398 {
399 struct p2p_device *dev;
400 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
401 if (ether_addr_equal(dev->interface_addr, addr))
402 return dev;
403 }
404 return NULL;
405 }
406
407
408 /**
409 * p2p_create_device - Create a peer entry
410 * @p2p: P2P module context from p2p_init()
411 * @addr: P2P Device Address of the peer
412 * Returns: Pointer to the device entry or %NULL on failure
413 *
414 * If there is already an entry for the peer, it will be returned instead of
415 * creating a new one.
416 */
p2p_create_device(struct p2p_data * p2p,const u8 * addr)417 static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
418 const u8 *addr)
419 {
420 struct p2p_device *dev, *oldest = NULL;
421 size_t count = 0;
422
423 dev = p2p_get_device(p2p, addr);
424 if (dev)
425 return dev;
426
427 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
428 count++;
429 if (oldest == NULL ||
430 os_reltime_before(&dev->last_seen, &oldest->last_seen))
431 oldest = dev;
432 }
433 if (count + 1 > p2p->cfg->max_peers && oldest) {
434 p2p_dbg(p2p,
435 "Remove oldest peer entry to make room for a new peer "
436 MACSTR, MAC2STR(oldest->info.p2p_device_addr));
437 dl_list_del(&oldest->list);
438 p2p_device_free(p2p, oldest);
439 }
440
441 dev = os_zalloc(sizeof(*dev));
442 if (dev == NULL)
443 return NULL;
444 dl_list_add(&p2p->devices, &dev->list);
445 os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
446 dev->support_6ghz = false;
447
448 return dev;
449 }
450
451
p2p_copy_client_info(struct p2p_device * dev,struct p2p_client_info * cli)452 static void p2p_copy_client_info(struct p2p_device *dev,
453 struct p2p_client_info *cli)
454 {
455 p2p_copy_filter_devname(dev->info.device_name,
456 sizeof(dev->info.device_name),
457 cli->dev_name, cli->dev_name_len);
458 dev->info.dev_capab = cli->dev_capab;
459 dev->info.config_methods = cli->config_methods;
460 os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
461 dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
462 if (dev->info.wps_sec_dev_type_list_len > WPS_SEC_DEV_TYPE_MAX_LEN)
463 dev->info.wps_sec_dev_type_list_len = WPS_SEC_DEV_TYPE_MAX_LEN;
464 os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
465 dev->info.wps_sec_dev_type_list_len);
466 }
467
468
p2p_add_group_clients(struct p2p_data * p2p,const u8 * go_dev_addr,const u8 * go_interface_addr,int freq,const u8 * gi,size_t gi_len,struct os_reltime * rx_time)469 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
470 const u8 *go_interface_addr, int freq,
471 const u8 *gi, size_t gi_len,
472 struct os_reltime *rx_time)
473 {
474 struct p2p_group_info info;
475 size_t c;
476 struct p2p_device *dev;
477
478 if (gi == NULL)
479 return 0;
480
481 if (p2p_group_info_parse(gi, gi_len, &info) < 0)
482 return -1;
483
484 /*
485 * Clear old data for this group; if the devices are still in the
486 * group, the information will be restored in the loop following this.
487 */
488 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
489 if (ether_addr_equal(dev->member_in_go_iface,
490 go_interface_addr)) {
491 os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
492 os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
493 }
494 }
495
496 for (c = 0; c < info.num_clients; c++) {
497 struct p2p_client_info *cli = &info.client[c];
498 if (ether_addr_equal(cli->p2p_device_addr, p2p->cfg->dev_addr))
499 continue; /* ignore our own entry */
500 dev = p2p_get_device(p2p, cli->p2p_device_addr);
501 if (dev) {
502 if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
503 P2P_DEV_PROBE_REQ_ONLY)) {
504 /*
505 * Update information since we have not
506 * received this directly from the client.
507 */
508 p2p_copy_client_info(dev, cli);
509 } else {
510 /*
511 * Need to update P2P Client Discoverability
512 * flag since it is valid only in P2P Group
513 * Info attribute.
514 */
515 dev->info.dev_capab &=
516 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
517 dev->info.dev_capab |=
518 cli->dev_capab &
519 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
520 }
521 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
522 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
523 }
524 } else {
525 dev = p2p_create_device(p2p, cli->p2p_device_addr);
526 if (dev == NULL)
527 continue;
528 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
529 p2p_copy_client_info(dev, cli);
530 dev->oper_freq = freq;
531 p2p->cfg->dev_found(p2p->cfg->cb_ctx,
532 dev->info.p2p_device_addr,
533 &dev->info, 1);
534 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
535 }
536
537 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
538 ETH_ALEN);
539 os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
540 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
541 os_memcpy(dev->member_in_go_iface, go_interface_addr,
542 ETH_ALEN);
543 dev->flags |= P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT;
544 }
545
546 return 0;
547 }
548
549
p2p_copy_wps_info(struct p2p_data * p2p,struct p2p_device * dev,int probe_req,const struct p2p_message * msg)550 static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev,
551 int probe_req, const struct p2p_message *msg)
552 {
553 os_memcpy(dev->info.device_name, msg->device_name,
554 sizeof(dev->info.device_name));
555
556 if (msg->manufacturer &&
557 msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
558 os_memset(dev->info.manufacturer, 0,
559 sizeof(dev->info.manufacturer));
560 os_memcpy(dev->info.manufacturer, msg->manufacturer,
561 msg->manufacturer_len);
562 }
563
564 if (msg->model_name &&
565 msg->model_name_len < sizeof(dev->info.model_name)) {
566 os_memset(dev->info.model_name, 0,
567 sizeof(dev->info.model_name));
568 os_memcpy(dev->info.model_name, msg->model_name,
569 msg->model_name_len);
570 }
571
572 if (msg->model_number &&
573 msg->model_number_len < sizeof(dev->info.model_number)) {
574 os_memset(dev->info.model_number, 0,
575 sizeof(dev->info.model_number));
576 os_memcpy(dev->info.model_number, msg->model_number,
577 msg->model_number_len);
578 }
579
580 if (msg->serial_number &&
581 msg->serial_number_len < sizeof(dev->info.serial_number)) {
582 os_memset(dev->info.serial_number, 0,
583 sizeof(dev->info.serial_number));
584 os_memcpy(dev->info.serial_number, msg->serial_number,
585 msg->serial_number_len);
586 }
587
588 if (msg->pri_dev_type)
589 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
590 sizeof(dev->info.pri_dev_type));
591 else if (msg->wps_pri_dev_type)
592 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
593 sizeof(dev->info.pri_dev_type));
594
595 if (msg->wps_sec_dev_type_list) {
596 os_memcpy(dev->info.wps_sec_dev_type_list,
597 msg->wps_sec_dev_type_list,
598 msg->wps_sec_dev_type_list_len);
599 dev->info.wps_sec_dev_type_list_len =
600 msg->wps_sec_dev_type_list_len;
601 }
602
603 if (msg->capability) {
604 /*
605 * P2P Client Discoverability bit is reserved in all frames
606 * that use this function, so do not change its value here.
607 */
608 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
609 dev->info.dev_capab |= msg->capability[0] &
610 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
611 dev->info.group_capab = msg->capability[1];
612 }
613
614 p2p_update_peer_6ghz_capab(dev, msg);
615
616 if (msg->ext_listen_timing) {
617 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
618 dev->ext_listen_interval =
619 WPA_GET_LE16(msg->ext_listen_timing + 2);
620 }
621
622 if (!probe_req) {
623 u16 new_config_methods;
624 new_config_methods = msg->config_methods ?
625 msg->config_methods : msg->wps_config_methods;
626 if (new_config_methods &&
627 dev->info.config_methods != new_config_methods) {
628 p2p_dbg(p2p, "Update peer " MACSTR
629 " config_methods 0x%x -> 0x%x",
630 MAC2STR(dev->info.p2p_device_addr),
631 dev->info.config_methods,
632 new_config_methods);
633 dev->info.config_methods = new_config_methods;
634 }
635 }
636 }
637
638
p2p_update_peer_6ghz_capab(struct p2p_device * dev,const struct p2p_message * msg)639 void p2p_update_peer_6ghz_capab(struct p2p_device *dev,
640 const struct p2p_message *msg)
641 {
642 if (msg->capability &&
643 (msg->capability[0] & P2P_DEV_CAPAB_6GHZ_BAND_CAPABLE))
644 dev->support_6ghz = true;
645 }
646
647
p2p_update_peer_vendor_elems(struct p2p_device * dev,const u8 * ies,size_t ies_len)648 static void p2p_update_peer_vendor_elems(struct p2p_device *dev, const u8 *ies,
649 size_t ies_len)
650 {
651 const u8 *pos, *end;
652 u8 id, len;
653
654 wpabuf_free(dev->info.vendor_elems);
655 dev->info.vendor_elems = NULL;
656
657 end = ies + ies_len;
658
659 for (pos = ies; end - pos > 1; pos += len) {
660 id = *pos++;
661 len = *pos++;
662
663 if (len > end - pos)
664 break;
665
666 if (id != WLAN_EID_VENDOR_SPECIFIC || len < 3)
667 continue;
668
669 if (len >= 4) {
670 u32 type = WPA_GET_BE32(pos);
671
672 if (type == WPA_IE_VENDOR_TYPE ||
673 type == WMM_IE_VENDOR_TYPE ||
674 type == WPS_IE_VENDOR_TYPE ||
675 type == P2P_IE_VENDOR_TYPE ||
676 type == WFD_IE_VENDOR_TYPE)
677 continue;
678 }
679
680 /* Unknown vendor element - make raw IE data available */
681 if (wpabuf_resize(&dev->info.vendor_elems, 2 + len) < 0)
682 break;
683 wpabuf_put_data(dev->info.vendor_elems, pos - 2, 2 + len);
684 if (wpabuf_size(dev->info.vendor_elems) > 2000)
685 break;
686 }
687 }
688
689
p2p_compare_wfd_info(struct p2p_device * dev,const struct p2p_message * msg)690 static int p2p_compare_wfd_info(struct p2p_device *dev,
691 const struct p2p_message *msg)
692 {
693 if (dev->info.wfd_subelems && msg->wfd_subelems) {
694 if (dev->info.wfd_subelems->used != msg->wfd_subelems->used)
695 return 1;
696
697 return os_memcmp(dev->info.wfd_subelems->buf,
698 msg->wfd_subelems->buf,
699 dev->info.wfd_subelems->used);
700 }
701 if (dev->info.wfd_subelems || msg->wfd_subelems)
702 return 1;
703
704 return 0;
705 }
706
707
708 /**
709 * p2p_add_device - Add peer entries based on scan results or P2P frames
710 * @p2p: P2P module context from p2p_init()
711 * @addr: Source address of Beacon or Probe Response frame (may be either
712 * P2P Device Address or P2P Interface Address)
713 * @level: Signal level (signal strength of the received frame from the peer)
714 * @freq: Frequency on which the Beacon or Probe Response frame was received
715 * @rx_time: Time when the result was received
716 * @ies: IEs from the Beacon or Probe Response frame
717 * @ies_len: Length of ies buffer in octets
718 * @scan_res: Whether this was based on scan results
719 * Returns: 0 on success, -1 on failure
720 *
721 * If the scan result is for a GO, the clients in the group will also be added
722 * to the peer table. This function can also be used with some other frames
723 * like Provision Discovery Request that contains P2P Capability and P2P Device
724 * Info attributes.
725 */
p2p_add_device(struct p2p_data * p2p,const u8 * addr,int freq,struct os_reltime * rx_time,int level,const u8 * ies,size_t ies_len,int scan_res)726 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
727 struct os_reltime *rx_time, int level, const u8 *ies,
728 size_t ies_len, int scan_res)
729 {
730 struct p2p_device *dev;
731 struct p2p_message msg;
732 const u8 *p2p_dev_addr;
733 int wfd_changed;
734 int dev_name_changed;
735 int i;
736 struct os_reltime time_now;
737
738 os_memset(&msg, 0, sizeof(msg));
739 if (p2p_parse_ies(ies, ies_len, &msg)) {
740 p2p_dbg(p2p, "Failed to parse P2P IE for a device entry");
741 p2p_parse_free(&msg);
742 return -1;
743 }
744
745 if (msg.p2p_device_addr)
746 p2p_dev_addr = msg.p2p_device_addr;
747 else if (msg.device_id)
748 p2p_dev_addr = msg.device_id;
749 else {
750 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
751 p2p_parse_free(&msg);
752 return -1;
753 }
754
755 if (!is_zero_ether_addr(p2p->peer_filter) &&
756 !ether_addr_equal(p2p_dev_addr, p2p->peer_filter)) {
757 p2p_dbg(p2p, "Do not add peer filter for " MACSTR
758 " due to peer filter", MAC2STR(p2p_dev_addr));
759 p2p_parse_free(&msg);
760 return 0;
761 }
762
763 dev = p2p_create_device(p2p, p2p_dev_addr);
764 if (dev == NULL) {
765 p2p_parse_free(&msg);
766 return -1;
767 }
768
769 if (rx_time == NULL) {
770 os_get_reltime(&time_now);
771 rx_time = &time_now;
772 }
773
774 /*
775 * Update the device entry only if the new peer
776 * entry is newer than the one previously stored, or if
777 * the device was previously seen as a P2P Client in a group
778 * and the new entry isn't older than a threshold.
779 */
780 if (dev->last_seen.sec > 0 &&
781 os_reltime_before(rx_time, &dev->last_seen) &&
782 (!(dev->flags & P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT) ||
783 os_reltime_expired(&dev->last_seen, rx_time,
784 P2P_DEV_GROUP_CLIENT_RESP_THRESHOLD))) {
785 p2p_dbg(p2p,
786 "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u flags=0x%x)",
787 (unsigned int) rx_time->sec,
788 (unsigned int) rx_time->usec,
789 (unsigned int) dev->last_seen.sec,
790 (unsigned int) dev->last_seen.usec,
791 dev->flags);
792 p2p_parse_free(&msg);
793 return -1;
794 }
795
796 os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
797
798 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY |
799 P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT);
800
801 if (!ether_addr_equal(addr, p2p_dev_addr))
802 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
803 if (msg.ssid &&
804 msg.ssid[1] <= sizeof(dev->oper_ssid) &&
805 (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
806 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
807 != 0)) {
808 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
809 dev->oper_ssid_len = msg.ssid[1];
810 }
811
812 wpabuf_free(dev->info.p2ps_instance);
813 dev->info.p2ps_instance = NULL;
814 if (msg.adv_service_instance && msg.adv_service_instance_len)
815 dev->info.p2ps_instance = wpabuf_alloc_copy(
816 msg.adv_service_instance, msg.adv_service_instance_len);
817
818 if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
819 *msg.ds_params >= 1 && *msg.ds_params <= 14) {
820 int ds_freq;
821 if (*msg.ds_params == 14)
822 ds_freq = 2484;
823 else
824 ds_freq = 2407 + *msg.ds_params * 5;
825 if (freq != ds_freq) {
826 p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz",
827 freq, ds_freq);
828 freq = ds_freq;
829 }
830 }
831
832 if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
833 p2p_dbg(p2p, "Update Listen frequency based on scan results ("
834 MACSTR " %d -> %d MHz (DS param %d)",
835 MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
836 freq, msg.ds_params ? *msg.ds_params : -1);
837 }
838 if (scan_res) {
839 dev->listen_freq = freq;
840 if (msg.group_info)
841 dev->oper_freq = freq;
842 }
843 dev->info.level = level;
844
845 dev_name_changed = os_strncmp(dev->info.device_name, msg.device_name,
846 WPS_DEV_NAME_MAX_LEN) != 0;
847
848 p2p_copy_wps_info(p2p, dev, 0, &msg);
849
850 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
851 wpabuf_free(dev->info.wps_vendor_ext[i]);
852 dev->info.wps_vendor_ext[i] = NULL;
853 }
854
855 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
856 if (msg.wps_vendor_ext[i] == NULL)
857 break;
858 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
859 msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
860 if (dev->info.wps_vendor_ext[i] == NULL)
861 break;
862 }
863
864 wfd_changed = p2p_compare_wfd_info(dev, &msg);
865
866 if (wfd_changed) {
867 wpabuf_free(dev->info.wfd_subelems);
868 if (msg.wfd_subelems)
869 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
870 else
871 dev->info.wfd_subelems = NULL;
872 }
873
874 if (scan_res) {
875 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
876 msg.group_info, msg.group_info_len,
877 rx_time);
878 }
879
880 p2p_parse_free(&msg);
881
882 p2p_update_peer_vendor_elems(dev, ies, ies_len);
883
884 if (dev->flags & P2P_DEV_REPORTED && !wfd_changed &&
885 !dev_name_changed &&
886 (!msg.adv_service_instance ||
887 (dev->flags & P2P_DEV_P2PS_REPORTED)))
888 return 0;
889
890 p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)",
891 freq, (unsigned int) rx_time->sec,
892 (unsigned int) rx_time->usec);
893 if (dev->flags & P2P_DEV_USER_REJECTED) {
894 p2p_dbg(p2p, "Do not report rejected device");
895 return 0;
896 }
897
898 if (dev->info.config_methods == 0 &&
899 (freq == 2412 || freq == 2437 || freq == 2462)) {
900 /*
901 * If we have only seen a Beacon frame from a GO, we do not yet
902 * know what WPS config methods it supports. Since some
903 * applications use config_methods value from P2P-DEVICE-FOUND
904 * events, postpone reporting this peer until we've fully
905 * discovered its capabilities.
906 *
907 * At least for now, do this only if the peer was detected on
908 * one of the social channels since that peer can be easily be
909 * found again and there are no limitations of having to use
910 * passive scan on this channels, so this can be done through
911 * Probe Response frame that includes the config_methods
912 * information.
913 */
914 p2p_dbg(p2p, "Do not report peer " MACSTR
915 " with unknown config methods", MAC2STR(addr));
916 return 0;
917 }
918
919 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
920 !(dev->flags & P2P_DEV_REPORTED_ONCE));
921 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
922
923 if (msg.adv_service_instance)
924 dev->flags |= P2P_DEV_P2PS_REPORTED;
925
926 return 0;
927 }
928
929
p2p_device_free(struct p2p_data * p2p,struct p2p_device * dev)930 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
931 {
932 int i;
933
934 if (p2p->go_neg_peer == dev) {
935 /*
936 * If GO Negotiation is in progress, report that it has failed.
937 */
938 p2p_go_neg_failed(p2p, -1);
939 }
940 if (p2p->invite_peer == dev)
941 p2p->invite_peer = NULL;
942 if (p2p->sd_peer == dev)
943 p2p->sd_peer = NULL;
944 if (p2p->pending_client_disc_go == dev)
945 p2p->pending_client_disc_go = NULL;
946
947 /* dev_lost() device, but only if it was previously dev_found() */
948 if (dev->flags & P2P_DEV_REPORTED_ONCE)
949 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
950 dev->info.p2p_device_addr);
951
952 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
953 wpabuf_free(dev->info.wps_vendor_ext[i]);
954 dev->info.wps_vendor_ext[i] = NULL;
955 }
956
957 wpabuf_free(dev->info.wfd_subelems);
958 wpabuf_free(dev->info.vendor_elems);
959 wpabuf_free(dev->go_neg_conf);
960 wpabuf_free(dev->info.p2ps_instance);
961
962 os_free(dev);
963 }
964
965
p2p_get_next_prog_freq(struct p2p_data * p2p)966 static int p2p_get_next_prog_freq(struct p2p_data *p2p)
967 {
968 struct p2p_channels *c;
969 struct p2p_reg_class *cla;
970 size_t cl, ch;
971 int found = 0;
972 u8 reg_class;
973 u8 channel;
974 int freq;
975
976 c = &p2p->cfg->channels;
977 for (cl = 0; cl < c->reg_classes; cl++) {
978 cla = &c->reg_class[cl];
979 if (cla->reg_class != p2p->last_prog_scan_class)
980 continue;
981 for (ch = 0; ch < cla->channels; ch++) {
982 if (cla->channel[ch] == p2p->last_prog_scan_chan) {
983 found = 1;
984 break;
985 }
986 }
987 if (found)
988 break;
989 }
990
991 if (!found) {
992 /* Start from beginning */
993 reg_class = c->reg_class[0].reg_class;
994 channel = c->reg_class[0].channel[0];
995 } else {
996 /* Pick the next channel */
997 ch++;
998 if (ch == cla->channels) {
999 cl++;
1000 if (cl == c->reg_classes)
1001 cl = 0;
1002 ch = 0;
1003 }
1004 reg_class = c->reg_class[cl].reg_class;
1005 channel = c->reg_class[cl].channel[ch];
1006 }
1007
1008 freq = p2p_channel_to_freq(reg_class, channel);
1009 p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz",
1010 reg_class, channel, freq);
1011 p2p->last_prog_scan_class = reg_class;
1012 p2p->last_prog_scan_chan = channel;
1013
1014 if (freq == 2412 || freq == 2437 || freq == 2462)
1015 return 0; /* No need to add social channels */
1016 return freq;
1017 }
1018
1019
p2p_search(struct p2p_data * p2p)1020 static void p2p_search(struct p2p_data *p2p)
1021 {
1022 int freq = 0;
1023 enum p2p_scan_type type;
1024 u16 pw_id = DEV_PW_DEFAULT;
1025 int res;
1026
1027 if (p2p->drv_in_listen) {
1028 p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing");
1029 return;
1030 }
1031 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1032 p2p->pending_listen_wait_drv = false;
1033
1034 if (p2p->find_pending_full &&
1035 (p2p->find_type == P2P_FIND_PROGRESSIVE ||
1036 p2p->find_type == P2P_FIND_START_WITH_FULL)) {
1037 type = P2P_SCAN_FULL;
1038 p2p_dbg(p2p, "Starting search (pending full scan)");
1039 p2p->find_pending_full = 0;
1040 } else if ((p2p->find_type == P2P_FIND_PROGRESSIVE &&
1041 (freq = p2p_get_next_prog_freq(p2p)) > 0) ||
1042 (p2p->find_type == P2P_FIND_START_WITH_FULL &&
1043 (freq = p2p->find_specified_freq) > 0)) {
1044 type = P2P_SCAN_SOCIAL_PLUS_ONE;
1045 p2p_dbg(p2p, "Starting search (+ freq %u)", freq);
1046 } else {
1047 type = P2P_SCAN_SOCIAL;
1048 p2p_dbg(p2p, "Starting search");
1049 }
1050
1051 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
1052 p2p->num_req_dev_types, p2p->req_dev_types,
1053 p2p->find_dev_id, pw_id, p2p->include_6ghz);
1054 if (res < 0) {
1055 p2p_dbg(p2p, "Scan request schedule failed");
1056 p2p_continue_find(p2p);
1057 }
1058 }
1059
1060
p2p_find_timeout(void * eloop_ctx,void * timeout_ctx)1061 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
1062 {
1063 struct p2p_data *p2p = eloop_ctx;
1064 p2p_dbg(p2p, "Find timeout -> stop");
1065 p2p_stop_find(p2p);
1066 }
1067
1068
p2p_notify_scan_trigger_status(struct p2p_data * p2p,int status)1069 void p2p_notify_scan_trigger_status(struct p2p_data *p2p, int status)
1070 {
1071 if (status != 0) {
1072 p2p_dbg(p2p, "Scan request failed");
1073 /* Do continue find even for the first p2p_find_scan */
1074 p2p_continue_find(p2p);
1075 } else {
1076 p2p_dbg(p2p, "Running p2p_scan");
1077 p2p->p2p_scan_running = 1;
1078 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1079 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1080 p2p, NULL);
1081 }
1082 }
1083
1084
p2p_run_after_scan(struct p2p_data * p2p)1085 static int p2p_run_after_scan(struct p2p_data *p2p)
1086 {
1087 struct p2p_device *dev;
1088 enum p2p_after_scan op;
1089
1090 op = p2p->start_after_scan;
1091 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1092 switch (op) {
1093 case P2P_AFTER_SCAN_NOTHING:
1094 break;
1095 case P2P_AFTER_SCAN_LISTEN:
1096 p2p_dbg(p2p, "Start previously requested Listen state");
1097 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
1098 p2p->pending_listen_usec / 1000);
1099 return 1;
1100 case P2P_AFTER_SCAN_CONNECT:
1101 p2p_dbg(p2p, "Start previously requested connect with " MACSTR,
1102 MAC2STR(p2p->after_scan_peer));
1103 dev = p2p_get_device(p2p, p2p->after_scan_peer);
1104 if (dev == NULL) {
1105 p2p_dbg(p2p, "Peer not known anymore");
1106 break;
1107 }
1108 p2p_connect_send(p2p, dev);
1109 return 1;
1110 }
1111
1112 return 0;
1113 }
1114
1115
p2p_scan_timeout(void * eloop_ctx,void * timeout_ctx)1116 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1117 {
1118 struct p2p_data *p2p = eloop_ctx;
1119 int running;
1120 p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running);
1121 running = p2p->p2p_scan_running;
1122 /* Make sure we recover from missed scan results callback */
1123 p2p->p2p_scan_running = 0;
1124
1125 if (running)
1126 p2p_run_after_scan(p2p);
1127 }
1128
1129
p2p_free_req_dev_types(struct p2p_data * p2p)1130 static void p2p_free_req_dev_types(struct p2p_data *p2p)
1131 {
1132 p2p->num_req_dev_types = 0;
1133 os_free(p2p->req_dev_types);
1134 p2p->req_dev_types = NULL;
1135 }
1136
1137
p2ps_gen_hash(struct p2p_data * p2p,const char * str,u8 * hash)1138 static int p2ps_gen_hash(struct p2p_data *p2p, const char *str, u8 *hash)
1139 {
1140 u8 buf[SHA256_MAC_LEN];
1141 char str_buf[256];
1142 const u8 *adv_array;
1143 size_t i, adv_len;
1144
1145 if (!str || !hash)
1146 return 0;
1147
1148 if (!str[0]) {
1149 os_memcpy(hash, p2p->wild_card_hash, P2PS_HASH_LEN);
1150 return 1;
1151 }
1152
1153 adv_array = (u8 *) str_buf;
1154 adv_len = os_strlen(str);
1155 if (adv_len >= sizeof(str_buf))
1156 return 0;
1157
1158 for (i = 0; i < adv_len; i++) {
1159 if (str[i] >= 'A' && str[i] <= 'Z')
1160 str_buf[i] = str[i] - 'A' + 'a';
1161 else
1162 str_buf[i] = str[i];
1163 }
1164
1165 if (sha256_vector(1, &adv_array, &adv_len, buf))
1166 return 0;
1167
1168 os_memcpy(hash, buf, P2PS_HASH_LEN);
1169 return 1;
1170 }
1171
1172
p2p_find(struct p2p_data * p2p,unsigned int timeout,enum p2p_discovery_type type,unsigned int num_req_dev_types,const u8 * req_dev_types,const u8 * dev_id,unsigned int search_delay,u8 seek_count,const char ** seek,int freq,bool include_6ghz)1173 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
1174 enum p2p_discovery_type type,
1175 unsigned int num_req_dev_types, const u8 *req_dev_types,
1176 const u8 *dev_id, unsigned int search_delay,
1177 u8 seek_count, const char **seek, int freq, bool include_6ghz)
1178 {
1179 int res;
1180 struct os_reltime start;
1181
1182 p2p_dbg(p2p, "Starting find (type=%d)", type);
1183 if (p2p->p2p_scan_running) {
1184 p2p_dbg(p2p, "p2p_scan is already running");
1185 }
1186
1187 p2p_free_req_dev_types(p2p);
1188 if (req_dev_types && num_req_dev_types) {
1189 p2p->req_dev_types = os_memdup(req_dev_types,
1190 num_req_dev_types *
1191 WPS_DEV_TYPE_LEN);
1192 if (p2p->req_dev_types == NULL)
1193 return -1;
1194 p2p->num_req_dev_types = num_req_dev_types;
1195 }
1196
1197 if (dev_id) {
1198 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
1199 p2p->find_dev_id = p2p->find_dev_id_buf;
1200 } else
1201 p2p->find_dev_id = NULL;
1202 p2p->include_6ghz = p2p_wfd_enabled(p2p) && include_6ghz;
1203 if (seek_count == 0 || !seek) {
1204 /* Not an ASP search */
1205 p2p->p2ps_seek = 0;
1206 } else if (seek_count == 1 && seek && (!seek[0] || !seek[0][0])) {
1207 /*
1208 * An empty seek string means no hash values, but still an ASP
1209 * search.
1210 */
1211 p2p_dbg(p2p, "ASP search");
1212 p2p->p2ps_seek_count = 0;
1213 p2p->p2ps_seek = 1;
1214 } else if (seek && seek_count <= P2P_MAX_QUERY_HASH) {
1215 u8 buf[P2PS_HASH_LEN];
1216 int i, count = 0;
1217
1218 for (i = 0; i < seek_count; i++) {
1219 if (!p2ps_gen_hash(p2p, seek[i], buf))
1220 continue;
1221
1222 p2p_dbg(p2p, "Seek service %s hash " MACSTR,
1223 seek[i], MAC2STR(buf));
1224 os_memcpy(&p2p->p2ps_seek_hash[count * P2PS_HASH_LEN],
1225 buf, P2PS_HASH_LEN);
1226 count++;
1227 }
1228
1229 p2p->p2ps_seek_count = count;
1230 p2p->p2ps_seek = 1;
1231 } else {
1232 p2p->p2ps_seek_count = 0;
1233 p2p->p2ps_seek = 1;
1234 }
1235
1236 /* Special case to perform wildcard search */
1237 if (p2p->p2ps_seek_count == 0 && p2p->p2ps_seek) {
1238 p2p->p2ps_seek_count = 1;
1239 os_memcpy(&p2p->p2ps_seek_hash, p2p->wild_card_hash,
1240 P2PS_HASH_LEN);
1241 }
1242
1243 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1244 p2p_clear_timeout(p2p);
1245 if (p2p->pending_listen_freq) {
1246 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_find");
1247 p2p->pending_listen_freq = 0;
1248 }
1249 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1250 p2p->pending_listen_wait_drv = false;
1251 p2p->find_pending_full = 0;
1252 p2p->find_type = type;
1253 if (freq != 2412 && freq != 2437 && freq != 2462 && freq != 60480)
1254 p2p->find_specified_freq = freq;
1255 else
1256 p2p->find_specified_freq = 0;
1257 p2p_device_clear_reported(p2p);
1258 os_memset(p2p->sd_query_no_ack, 0, ETH_ALEN);
1259 p2p_set_state(p2p, P2P_SEARCH);
1260 p2p->search_delay = search_delay;
1261 p2p->in_search_delay = 0;
1262 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1263 p2p->last_p2p_find_timeout = timeout;
1264 if (timeout)
1265 eloop_register_timeout(timeout, 0, p2p_find_timeout,
1266 p2p, NULL);
1267 os_get_reltime(&start);
1268 switch (type) {
1269 case P2P_FIND_START_WITH_FULL:
1270 if (freq > 0) {
1271 /*
1272 * Start with the specified channel and then move to
1273 * scans for social channels and this specific channel.
1274 */
1275 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx,
1276 P2P_SCAN_SPECIFIC, freq,
1277 p2p->num_req_dev_types,
1278 p2p->req_dev_types, dev_id,
1279 DEV_PW_DEFAULT,
1280 p2p->include_6ghz);
1281 break;
1282 }
1283 /* fall through */
1284 case P2P_FIND_PROGRESSIVE:
1285 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1286 p2p->num_req_dev_types,
1287 p2p->req_dev_types, dev_id,
1288 DEV_PW_DEFAULT, p2p->include_6ghz);
1289 break;
1290 case P2P_FIND_ONLY_SOCIAL:
1291 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1292 p2p->num_req_dev_types,
1293 p2p->req_dev_types, dev_id,
1294 DEV_PW_DEFAULT, p2p->include_6ghz);
1295 break;
1296 default:
1297 return -1;
1298 }
1299
1300 if (!res)
1301 p2p->find_start = start;
1302
1303 if (res != 0 && p2p->p2p_scan_running) {
1304 p2p_dbg(p2p, "Failed to start p2p_scan - another p2p_scan was already running");
1305 /* wait for the previous p2p_scan to complete */
1306 if (type == P2P_FIND_PROGRESSIVE ||
1307 (type == P2P_FIND_START_WITH_FULL && freq == 0))
1308 p2p->find_pending_full = 1;
1309 res = 0; /* do not report failure */
1310 } else if (res != 0) {
1311 p2p_dbg(p2p, "Failed to start p2p_scan");
1312 p2p_set_state(p2p, P2P_IDLE);
1313 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1314 }
1315
1316 return res;
1317 }
1318
1319
p2p_stop_find_for_freq(struct p2p_data * p2p,int freq)1320 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1321 {
1322 p2p_dbg(p2p, "Stopping find");
1323 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1324 p2p_clear_timeout(p2p);
1325 if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND)
1326 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
1327
1328 p2p->p2ps_seek_count = 0;
1329
1330 p2p_set_state(p2p, P2P_IDLE);
1331 p2p_free_req_dev_types(p2p);
1332 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1333 if (p2p->go_neg_peer)
1334 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
1335 p2p->go_neg_peer = NULL;
1336 p2p->sd_peer = NULL;
1337 p2p->invite_peer = NULL;
1338 p2p_stop_listen_for_freq(p2p, freq);
1339 p2p->send_action_in_progress = 0;
1340 }
1341
1342
p2p_stop_listen_for_freq(struct p2p_data * p2p,int freq)1343 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1344 {
1345 p2p_dbg(p2p,
1346 "%s(freq=%d) pending_listen_freq=%d in_listen=%d drv_in_listen=%d",
1347 __func__, freq, p2p->pending_listen_freq, p2p->in_listen,
1348 p2p->drv_in_listen);
1349 if (freq > 0 &&
1350 ((p2p->drv_in_listen == freq && p2p->in_listen) ||
1351 p2p->pending_listen_freq == (unsigned int) freq)) {
1352 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response");
1353 return;
1354 }
1355 if (p2p->in_listen) {
1356 p2p->in_listen = 0;
1357 p2p_clear_timeout(p2p);
1358 }
1359 if (p2p->drv_in_listen) {
1360 /*
1361 * The driver may not deliver callback to p2p_listen_end()
1362 * when the operation gets canceled, so clear the internal
1363 * variable that is tracking driver state.
1364 */
1365 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen);
1366 p2p->drv_in_listen = 0;
1367 }
1368 if (p2p->pending_listen_freq &&
1369 p2p->pending_listen_freq != (unsigned int) freq &&
1370 !p2p->drv_in_listen && p2p->pending_listen_wait_drv) {
1371 p2p_dbg(p2p,
1372 "Clear pending_listen_freq since the started listen did not complete before being stopped");
1373 p2p->pending_listen_freq = 0;
1374 }
1375 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1376 p2p->pending_listen_wait_drv = false;
1377 }
1378
1379
p2p_stop_listen(struct p2p_data * p2p)1380 void p2p_stop_listen(struct p2p_data *p2p)
1381 {
1382 if (p2p->state != P2P_LISTEN_ONLY) {
1383 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state.");
1384 return;
1385 }
1386
1387 p2p_stop_listen_for_freq(p2p, 0);
1388 p2p_set_state(p2p, P2P_IDLE);
1389 }
1390
1391
p2p_stop_find(struct p2p_data * p2p)1392 void p2p_stop_find(struct p2p_data *p2p)
1393 {
1394 p2p->pending_listen_freq = 0;
1395 p2p_stop_find_for_freq(p2p, 0);
1396 }
1397
1398
p2p_prepare_channel_pref(struct p2p_data * p2p,unsigned int force_freq,unsigned int pref_freq,int go)1399 static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1400 unsigned int force_freq,
1401 unsigned int pref_freq, int go)
1402 {
1403 u8 op_class, op_channel;
1404 unsigned int freq = force_freq ? force_freq : pref_freq;
1405
1406 p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d",
1407 force_freq, pref_freq, go);
1408 if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) {
1409 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq);
1410 return -1;
1411 }
1412
1413 if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) &&
1414 (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class,
1415 op_channel))) {
1416 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P",
1417 freq, op_class, op_channel);
1418 return -1;
1419 }
1420
1421 p2p->op_reg_class = op_class;
1422 p2p->op_channel = op_channel;
1423
1424 if (force_freq) {
1425 p2p->channels.reg_classes = 1;
1426 p2p->channels.reg_class[0].channels = 1;
1427 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1428 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1429 } else {
1430 p2p_copy_channels(&p2p->channels, &p2p->cfg->channels,
1431 p2p->allow_6ghz);
1432 }
1433
1434 return 0;
1435 }
1436
1437
p2p_prepare_channel_best(struct p2p_data * p2p)1438 static void p2p_prepare_channel_best(struct p2p_data *p2p)
1439 {
1440 u8 op_class, op_channel;
1441 const int op_classes_5ghz[] = { 124, 125, 115, 0 };
1442 const int op_classes_ht40[] = { 126, 127, 116, 117, 0 };
1443 const int op_classes_vht[] = { 128, 0 };
1444 const int op_classes_edmg[] = { 181, 182, 183, 0 };
1445 const int op_classes_6ghz[] = { 131, 0 };
1446
1447 p2p_dbg(p2p, "Prepare channel best");
1448
1449 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1450 p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1451 p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1452 == 0) {
1453 p2p_dbg(p2p, "Select best overall channel as operating channel preference");
1454 p2p->op_reg_class = op_class;
1455 p2p->op_channel = op_channel;
1456 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1457 p2p_supported_freq(p2p, p2p->best_freq_5) &&
1458 p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1459 == 0) {
1460 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
1461 p2p->op_reg_class = op_class;
1462 p2p->op_channel = op_channel;
1463 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1464 p2p_supported_freq(p2p, p2p->best_freq_24) &&
1465 p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1466 &op_channel) == 0) {
1467 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
1468 p2p->op_reg_class = op_class;
1469 p2p->op_channel = op_channel;
1470 } else if (p2p->cfg->num_pref_chan > 0 &&
1471 p2p_channels_includes(&p2p->cfg->channels,
1472 p2p->cfg->pref_chan[0].op_class,
1473 p2p->cfg->pref_chan[0].chan)) {
1474 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference");
1475 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class;
1476 p2p->op_channel = p2p->cfg->pref_chan[0].chan;
1477 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_edmg,
1478 &p2p->op_reg_class, &p2p->op_channel) ==
1479 0) {
1480 p2p_dbg(p2p, "Select possible EDMG channel (op_class %u channel %u) as operating channel preference",
1481 p2p->op_reg_class, p2p->op_channel);
1482 } else if (p2p->allow_6ghz &&
1483 (p2p_channel_select(&p2p->cfg->channels, op_classes_6ghz,
1484 &p2p->op_reg_class, &p2p->op_channel) ==
1485 0)) {
1486 p2p_dbg(p2p, "Select possible 6 GHz channel (op_class %u channel %u) as operating channel preference",
1487 p2p->op_reg_class, p2p->op_channel);
1488 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht,
1489 &p2p->op_reg_class, &p2p->op_channel) ==
1490 0) {
1491 p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference",
1492 p2p->op_reg_class, p2p->op_channel);
1493 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40,
1494 &p2p->op_reg_class, &p2p->op_channel) ==
1495 0) {
1496 p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference",
1497 p2p->op_reg_class, p2p->op_channel);
1498 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz,
1499 &p2p->op_reg_class, &p2p->op_channel) ==
1500 0) {
1501 p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference",
1502 p2p->op_reg_class, p2p->op_channel);
1503 } else if (p2p_channels_includes(&p2p->cfg->channels,
1504 p2p->cfg->op_reg_class,
1505 p2p->cfg->op_channel)) {
1506 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference");
1507 p2p->op_reg_class = p2p->cfg->op_reg_class;
1508 p2p->op_channel = p2p->cfg->op_channel;
1509 } else if (p2p_channel_random_social(&p2p->cfg->channels,
1510 &p2p->op_reg_class,
1511 &p2p->op_channel,
1512 NULL, NULL) == 0) {
1513 p2p_dbg(p2p, "Select random available social channel (op_class %u channel %u) as operating channel preference",
1514 p2p->op_reg_class, p2p->op_channel);
1515 } else {
1516 /* Select any random available channel from the first available
1517 * operating class */
1518 if (p2p_channel_select(&p2p->cfg->channels, NULL,
1519 &p2p->op_reg_class,
1520 &p2p->op_channel) == 0)
1521 p2p_dbg(p2p,
1522 "Select random available channel %d from operating class %d as operating channel preference",
1523 p2p->op_channel, p2p->op_reg_class);
1524 }
1525
1526 p2p_copy_channels(&p2p->channels, &p2p->cfg->channels, p2p->allow_6ghz);
1527 }
1528
1529
1530 /**
1531 * p2p_prepare_channel - Select operating channel for GO Negotiation or P2PS PD
1532 * @p2p: P2P module context from p2p_init()
1533 * @dev: Selected peer device
1534 * @force_freq: Forced frequency in MHz or 0 if not forced
1535 * @pref_freq: Preferred frequency in MHz or 0 if no preference
1536 * @go: Whether the local end will be forced to be GO
1537 * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1538 *
1539 * This function is used to do initial operating channel selection for GO
1540 * Negotiation prior to having received peer information or for P2PS PD
1541 * signalling. The selected channel may be further optimized in
1542 * p2p_reselect_channel() once the peer information is available.
1543 */
p2p_prepare_channel(struct p2p_data * p2p,struct p2p_device * dev,unsigned int force_freq,unsigned int pref_freq,int go)1544 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
1545 unsigned int force_freq, unsigned int pref_freq, int go)
1546 {
1547 p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d",
1548 force_freq, pref_freq, go);
1549 if (force_freq || pref_freq) {
1550 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) <
1551 0)
1552 return -1;
1553 } else {
1554 p2p_prepare_channel_best(p2p);
1555 }
1556 p2p_channels_dump(p2p, "prepared channels", &p2p->channels);
1557 if (go)
1558 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq);
1559 else if (!force_freq)
1560 p2p_channels_union_inplace(&p2p->channels,
1561 &p2p->cfg->cli_channels);
1562 p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels);
1563
1564 p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
1565 p2p->op_reg_class, p2p->op_channel,
1566 force_freq ? " (forced)" : "");
1567
1568 if (force_freq)
1569 dev->flags |= P2P_DEV_FORCE_FREQ;
1570 else
1571 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1572
1573 return 0;
1574 }
1575
1576
p2p_set_dev_persistent(struct p2p_device * dev,int persistent_group)1577 static void p2p_set_dev_persistent(struct p2p_device *dev,
1578 int persistent_group)
1579 {
1580 switch (persistent_group) {
1581 case 0:
1582 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1583 P2P_DEV_PREFER_PERSISTENT_RECONN);
1584 break;
1585 case 1:
1586 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1587 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1588 break;
1589 case 2:
1590 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1591 P2P_DEV_PREFER_PERSISTENT_RECONN;
1592 break;
1593 }
1594 }
1595
1596
p2p_connect(struct p2p_data * p2p,const u8 * peer_addr,enum p2p_wps_method wps_method,int go_intent,const u8 * own_interface_addr,unsigned int force_freq,int persistent_group,const u8 * force_ssid,size_t force_ssid_len,int pd_before_go_neg,unsigned int pref_freq,u16 oob_pw_id)1597 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1598 enum p2p_wps_method wps_method,
1599 int go_intent, const u8 *own_interface_addr,
1600 unsigned int force_freq, int persistent_group,
1601 const u8 *force_ssid, size_t force_ssid_len,
1602 int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id)
1603 {
1604 struct p2p_device *dev;
1605
1606 p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
1607 " GO Intent=%d Intended Interface Address=" MACSTR
1608 " wps_method=%d persistent_group=%d pd_before_go_neg=%d "
1609 "oob_pw_id=%u allow_6ghz=%d",
1610 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1611 wps_method, persistent_group, pd_before_go_neg, oob_pw_id,
1612 p2p->allow_6ghz);
1613
1614 dev = p2p_get_device(p2p, peer_addr);
1615 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1616 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
1617 MAC2STR(peer_addr));
1618 return -1;
1619 }
1620
1621 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq,
1622 go_intent == 15) < 0)
1623 return -1;
1624
1625 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1626 if (!(dev->info.dev_capab &
1627 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1628 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1629 " that is in a group and is not discoverable",
1630 MAC2STR(peer_addr));
1631 return -1;
1632 }
1633 if (dev->oper_freq <= 0) {
1634 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1635 " with incomplete information",
1636 MAC2STR(peer_addr));
1637 return -1;
1638 }
1639
1640 /*
1641 * First, try to connect directly. If the peer does not
1642 * acknowledge frames, assume it is sleeping and use device
1643 * discoverability via the GO at that point.
1644 */
1645 }
1646
1647 p2p->ssid_set = 0;
1648 if (force_ssid) {
1649 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1650 force_ssid, force_ssid_len);
1651 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1652 p2p->ssid_len = force_ssid_len;
1653 p2p->ssid_set = 1;
1654 }
1655
1656 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1657 dev->flags &= ~P2P_DEV_USER_REJECTED;
1658 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1659 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1660 if (pd_before_go_neg)
1661 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
1662 else {
1663 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
1664 /*
1665 * Assign dialog token and tie breaker here to use the same
1666 * values in each retry within the same GO Negotiation exchange.
1667 */
1668 dev->dialog_token++;
1669 if (dev->dialog_token == 0)
1670 dev->dialog_token = 1;
1671 dev->tie_breaker = p2p->next_tie_breaker;
1672 p2p->next_tie_breaker = !p2p->next_tie_breaker;
1673 }
1674 dev->connect_reqs = 0;
1675 dev->go_neg_req_sent = 0;
1676 dev->go_state = UNKNOWN_GO;
1677 p2p_set_dev_persistent(dev, persistent_group);
1678 p2p->go_intent = go_intent;
1679 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1680
1681 if (p2p->state != P2P_IDLE)
1682 p2p_stop_find(p2p);
1683
1684 dev->wps_method = wps_method;
1685 dev->oob_pw_id = oob_pw_id;
1686 dev->status = P2P_SC_SUCCESS;
1687
1688 if (p2p->p2p_scan_running) {
1689 p2p_dbg(p2p, "p2p_scan running - delay connect send");
1690 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1691 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1692 return 0;
1693 }
1694
1695 return p2p_connect_send(p2p, dev);
1696 }
1697
1698
p2p_authorize(struct p2p_data * p2p,const u8 * peer_addr,enum p2p_wps_method wps_method,int go_intent,const u8 * own_interface_addr,unsigned int force_freq,int persistent_group,const u8 * force_ssid,size_t force_ssid_len,unsigned int pref_freq,u16 oob_pw_id)1699 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1700 enum p2p_wps_method wps_method,
1701 int go_intent, const u8 *own_interface_addr,
1702 unsigned int force_freq, int persistent_group,
1703 const u8 *force_ssid, size_t force_ssid_len,
1704 unsigned int pref_freq, u16 oob_pw_id)
1705 {
1706 struct p2p_device *dev;
1707
1708 p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
1709 " GO Intent=%d Intended Interface Address=" MACSTR
1710 " wps_method=%d persistent_group=%d oob_pw_id=%u allow_6ghz=%d",
1711 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1712 wps_method, persistent_group, oob_pw_id, p2p->allow_6ghz);
1713
1714 dev = p2p_get_device(p2p, peer_addr);
1715 if (dev == NULL) {
1716 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
1717 MAC2STR(peer_addr));
1718 return -1;
1719 }
1720
1721 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent ==
1722 15) < 0)
1723 return -1;
1724
1725 p2p->ssid_set = 0;
1726 if (force_ssid) {
1727 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1728 force_ssid, force_ssid_len);
1729 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1730 p2p->ssid_len = force_ssid_len;
1731 p2p->ssid_set = 1;
1732 }
1733
1734 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1735 dev->flags &= ~P2P_DEV_USER_REJECTED;
1736 dev->go_neg_req_sent = 0;
1737 dev->go_state = UNKNOWN_GO;
1738 p2p_set_dev_persistent(dev, persistent_group);
1739 p2p->go_intent = go_intent;
1740 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1741
1742 dev->wps_method = wps_method;
1743 dev->oob_pw_id = oob_pw_id;
1744 dev->status = P2P_SC_SUCCESS;
1745
1746 return 0;
1747 }
1748
1749
p2p_add_dev_info(struct p2p_data * p2p,const u8 * addr,struct p2p_device * dev,struct p2p_message * msg)1750 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1751 struct p2p_device *dev, struct p2p_message *msg)
1752 {
1753 os_get_reltime(&dev->last_seen);
1754
1755 p2p_copy_wps_info(p2p, dev, 0, msg);
1756
1757 if (msg->listen_channel) {
1758 int freq;
1759 freq = p2p_channel_to_freq(msg->listen_channel[3],
1760 msg->listen_channel[4]);
1761 if (freq < 0) {
1762 p2p_dbg(p2p, "Unknown peer Listen channel: "
1763 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1764 msg->listen_channel[0],
1765 msg->listen_channel[1],
1766 msg->listen_channel[2],
1767 msg->listen_channel[3],
1768 msg->listen_channel[4]);
1769 } else {
1770 p2p_dbg(p2p, "Update peer " MACSTR
1771 " Listen channel: %u -> %u MHz",
1772 MAC2STR(dev->info.p2p_device_addr),
1773 dev->listen_freq, freq);
1774 dev->listen_freq = freq;
1775 }
1776 }
1777
1778 if (msg->wfd_subelems) {
1779 wpabuf_free(dev->info.wfd_subelems);
1780 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1781 }
1782
1783 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1784 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1785 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
1786 } else {
1787 p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
1788 MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1789 "listen_freq=%d",
1790 MAC2STR(dev->info.p2p_device_addr),
1791 dev->info.dev_capab, dev->info.group_capab,
1792 dev->info.device_name, dev->listen_freq);
1793 }
1794
1795 dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1796
1797 if (dev->flags & P2P_DEV_USER_REJECTED) {
1798 p2p_dbg(p2p, "Do not report rejected device");
1799 return;
1800 }
1801
1802 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1803 !(dev->flags & P2P_DEV_REPORTED_ONCE));
1804 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1805 }
1806
1807
p2p_build_ssid(struct p2p_data * p2p,u8 * ssid,size_t * ssid_len)1808 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1809 {
1810 os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1811 p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1812 os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1813 p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1814 *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1815 }
1816
1817
p2p_go_params(struct p2p_data * p2p,struct p2p_go_neg_results * params)1818 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1819 {
1820 if (p2p->ssid_set) {
1821 os_memcpy(params->ssid, p2p->ssid, p2p->ssid_len);
1822 params->ssid_len = p2p->ssid_len;
1823 } else {
1824 p2p_build_ssid(p2p, params->ssid, ¶ms->ssid_len);
1825 }
1826 p2p->ssid_set = 0;
1827
1828 p2p_random(params->passphrase, p2p->cfg->passphrase_len);
1829 params->passphrase[p2p->cfg->passphrase_len] = '\0';
1830 return 0;
1831 }
1832
1833
p2p_go_complete(struct p2p_data * p2p,struct p2p_device * peer)1834 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1835 {
1836 struct p2p_go_neg_results res;
1837 int go = peer->go_state == LOCAL_GO;
1838 struct p2p_channels intersection;
1839
1840 p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1841 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
1842
1843 os_memset(&res, 0, sizeof(res));
1844 res.role_go = go;
1845 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1846 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1847 res.wps_method = peer->wps_method;
1848 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1849 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1850 res.persistent_group = 2;
1851 else
1852 res.persistent_group = 1;
1853 }
1854
1855 if (go) {
1856 /* Setup AP mode for WPS provisioning */
1857 res.freq = p2p_channel_to_freq(p2p->op_reg_class,
1858 p2p->op_channel);
1859 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1860 res.ssid_len = p2p->ssid_len;
1861 p2p_random(res.passphrase, p2p->cfg->passphrase_len);
1862 res.passphrase[p2p->cfg->passphrase_len] = '\0';
1863 } else {
1864 res.freq = peer->oper_freq;
1865 if (p2p->ssid_len) {
1866 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1867 res.ssid_len = p2p->ssid_len;
1868 }
1869 }
1870
1871 p2p_channels_dump(p2p, "own channels", &p2p->channels);
1872 p2p_channels_dump(p2p, "peer channels", &peer->channels);
1873 p2p_channels_intersect(&p2p->channels, &peer->channels,
1874 &intersection);
1875 if (go) {
1876 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq);
1877 p2p_channels_dump(p2p, "intersection after no-GO removal",
1878 &intersection);
1879 }
1880
1881 p2p_channels_to_freqs(&intersection, res.freq_list,
1882 P2P_MAX_CHANNELS);
1883
1884 res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1885
1886 p2p_clear_timeout(p2p);
1887 p2p->ssid_set = 0;
1888 peer->go_neg_req_sent = 0;
1889 peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
1890 peer->wps_method = WPS_NOT_READY;
1891 peer->oob_pw_id = 0;
1892 wpabuf_free(peer->go_neg_conf);
1893 peer->go_neg_conf = NULL;
1894
1895 p2p_set_state(p2p, P2P_PROVISIONING);
1896 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1897 }
1898
1899
p2p_rx_p2p_action(struct p2p_data * p2p,const u8 * sa,const u8 * data,size_t len,int rx_freq)1900 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1901 const u8 *data, size_t len, int rx_freq)
1902 {
1903 p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
1904 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1905
1906 if (len < 1)
1907 return;
1908
1909 switch (data[0]) {
1910 case P2P_GO_NEG_REQ:
1911 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1912 break;
1913 case P2P_GO_NEG_RESP:
1914 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1915 break;
1916 case P2P_GO_NEG_CONF:
1917 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1918 break;
1919 case P2P_INVITATION_REQ:
1920 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1921 rx_freq);
1922 break;
1923 case P2P_INVITATION_RESP:
1924 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1925 break;
1926 case P2P_PROV_DISC_REQ:
1927 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1928 break;
1929 case P2P_PROV_DISC_RESP:
1930 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1931 break;
1932 case P2P_DEV_DISC_REQ:
1933 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1934 break;
1935 case P2P_DEV_DISC_RESP:
1936 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1937 break;
1938 default:
1939 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
1940 data[0]);
1941 break;
1942 }
1943 }
1944
1945
p2p_rx_action_public(struct p2p_data * p2p,const u8 * da,const u8 * sa,const u8 * bssid,const u8 * data,size_t len,int freq)1946 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1947 const u8 *sa, const u8 *bssid, const u8 *data,
1948 size_t len, int freq)
1949 {
1950 if (len < 1)
1951 return;
1952
1953 switch (data[0]) {
1954 case WLAN_PA_VENDOR_SPECIFIC:
1955 data++;
1956 len--;
1957 if (len < 4)
1958 return;
1959 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1960 return;
1961
1962 data += 4;
1963 len -= 4;
1964
1965 p2p_rx_p2p_action(p2p, sa, data, len, freq);
1966 break;
1967 case WLAN_PA_GAS_INITIAL_REQ:
1968 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1969 break;
1970 case WLAN_PA_GAS_INITIAL_RESP:
1971 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1972 break;
1973 case WLAN_PA_GAS_COMEBACK_REQ:
1974 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1975 break;
1976 case WLAN_PA_GAS_COMEBACK_RESP:
1977 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1978 break;
1979 }
1980 }
1981
1982
p2p_rx_action(struct p2p_data * p2p,const u8 * da,const u8 * sa,const u8 * bssid,u8 category,const u8 * data,size_t len,int freq)1983 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1984 const u8 *bssid, u8 category,
1985 const u8 *data, size_t len, int freq)
1986 {
1987 if (category == WLAN_ACTION_PUBLIC) {
1988 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1989 return;
1990 }
1991
1992 if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1993 return;
1994
1995 if (len < 4)
1996 return;
1997
1998 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1999 return;
2000 data += 4;
2001 len -= 4;
2002
2003 /* P2P action frame */
2004 p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
2005 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
2006
2007 if (len < 1)
2008 return;
2009 switch (data[0]) {
2010 case P2P_NOA:
2011 p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
2012 /* TODO */
2013 break;
2014 case P2P_PRESENCE_REQ:
2015 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
2016 break;
2017 case P2P_PRESENCE_RESP:
2018 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
2019 break;
2020 case P2P_GO_DISC_REQ:
2021 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
2022 break;
2023 default:
2024 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
2025 break;
2026 }
2027 }
2028
2029
p2p_go_neg_start(void * eloop_ctx,void * timeout_ctx)2030 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
2031 {
2032 struct p2p_data *p2p = eloop_ctx;
2033 if (p2p->go_neg_peer == NULL)
2034 return;
2035 if (p2p->pending_listen_freq) {
2036 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_go_neg_start");
2037 p2p->pending_listen_freq = 0;
2038 }
2039 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
2040 p2p->pending_listen_wait_drv = false;
2041 p2p->go_neg_peer->status = P2P_SC_SUCCESS;
2042 /*
2043 * Set new timeout to make sure a previously set one does not expire
2044 * too quickly while waiting for the GO Negotiation to complete.
2045 */
2046 p2p_set_timeout(p2p, 0, 500000);
2047 p2p_connect_send(p2p, p2p->go_neg_peer);
2048 }
2049
2050
p2p_invite_start(void * eloop_ctx,void * timeout_ctx)2051 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
2052 {
2053 struct p2p_data *p2p = eloop_ctx;
2054 if (p2p->invite_peer == NULL)
2055 return;
2056 if (p2p->pending_listen_freq) {
2057 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_invite_start");
2058 p2p->pending_listen_freq = 0;
2059 }
2060 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
2061 p2p->pending_listen_wait_drv = false;
2062 p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr,
2063 p2p->invite_dev_pw_id);
2064 }
2065
2066
p2p_add_dev_from_probe_req(struct p2p_data * p2p,const u8 * addr,const u8 * ie,size_t ie_len)2067 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
2068 const u8 *ie, size_t ie_len)
2069 {
2070 struct p2p_message msg;
2071 struct p2p_device *dev;
2072
2073 os_memset(&msg, 0, sizeof(msg));
2074 if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
2075 {
2076 p2p_parse_free(&msg);
2077 return; /* not a P2P probe */
2078 }
2079
2080 if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
2081 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
2082 != 0) {
2083 /* The Probe Request is not part of P2P Device Discovery. It is
2084 * not known whether the source address of the frame is the P2P
2085 * Device Address or P2P Interface Address. Do not add a new
2086 * peer entry based on this frames.
2087 */
2088 p2p_parse_free(&msg);
2089 return;
2090 }
2091
2092 dev = p2p_get_device(p2p, addr);
2093 if (dev) {
2094 if (msg.listen_channel) {
2095 int freq;
2096
2097 if (dev->country[0] == 0)
2098 os_memcpy(dev->country, msg.listen_channel, 3);
2099
2100 freq = p2p_channel_to_freq(msg.listen_channel[3],
2101 msg.listen_channel[4]);
2102
2103 if (freq > 0 && dev->listen_freq != freq) {
2104 p2p_dbg(p2p,
2105 "Updated peer " MACSTR " Listen channel (Probe Request): %d -> %d MHz",
2106 MAC2STR(addr), dev->listen_freq, freq);
2107 dev->listen_freq = freq;
2108 }
2109 }
2110
2111 p2p_update_peer_6ghz_capab(dev, &msg);
2112 os_get_reltime(&dev->last_seen);
2113 p2p_parse_free(&msg);
2114 return; /* already known */
2115 }
2116
2117 dev = p2p_create_device(p2p, addr);
2118 if (dev == NULL) {
2119 p2p_parse_free(&msg);
2120 return;
2121 }
2122
2123 os_get_reltime(&dev->last_seen);
2124 dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
2125
2126 if (msg.listen_channel) {
2127 os_memcpy(dev->country, msg.listen_channel, 3);
2128 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
2129 msg.listen_channel[4]);
2130 }
2131
2132 p2p_copy_wps_info(p2p, dev, 1, &msg);
2133
2134 if (msg.wfd_subelems) {
2135 wpabuf_free(dev->info.wfd_subelems);
2136 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
2137 }
2138
2139 p2p_parse_free(&msg);
2140
2141 p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
2142 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
2143 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
2144 dev->info.group_capab, dev->info.device_name,
2145 dev->listen_freq);
2146 }
2147
2148
p2p_add_dev_from_go_neg_req(struct p2p_data * p2p,const u8 * addr,struct p2p_message * msg)2149 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
2150 const u8 *addr,
2151 struct p2p_message *msg)
2152 {
2153 struct p2p_device *dev;
2154
2155 dev = p2p_get_device(p2p, addr);
2156 if (dev) {
2157 os_get_reltime(&dev->last_seen);
2158 return dev; /* already known */
2159 }
2160
2161 dev = p2p_create_device(p2p, addr);
2162 if (dev == NULL)
2163 return NULL;
2164
2165 p2p_add_dev_info(p2p, addr, dev, msg);
2166
2167 return dev;
2168 }
2169
2170
dev_type_match(const u8 * dev_type,const u8 * req_dev_type)2171 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
2172 {
2173 if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
2174 return 1;
2175 if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
2176 WPA_GET_BE32(&req_dev_type[2]) == 0 &&
2177 WPA_GET_BE16(&req_dev_type[6]) == 0)
2178 return 1; /* Category match with wildcard OUI/sub-category */
2179 return 0;
2180 }
2181
2182
dev_type_list_match(const u8 * dev_type,const u8 * req_dev_type[],size_t num_req_dev_type)2183 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
2184 size_t num_req_dev_type)
2185 {
2186 size_t i;
2187 for (i = 0; i < num_req_dev_type; i++) {
2188 if (dev_type_match(dev_type, req_dev_type[i]))
2189 return 1;
2190 }
2191 return 0;
2192 }
2193
2194
2195 /**
2196 * p2p_match_dev_type - Match local device type with requested type
2197 * @p2p: P2P module context from p2p_init()
2198 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
2199 * Returns: 1 on match, 0 on mismatch
2200 *
2201 * This function can be used to match the Requested Device Type attribute in
2202 * WPS IE with the local device types for deciding whether to reply to a Probe
2203 * Request frame.
2204 */
p2p_match_dev_type(struct p2p_data * p2p,struct wpabuf * wps)2205 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
2206 {
2207 struct wps_parse_attr attr;
2208 size_t i;
2209
2210 if (wps_parse_msg(wps, &attr))
2211 return 1; /* assume no Requested Device Type attributes */
2212
2213 if (attr.num_req_dev_type == 0)
2214 return 1; /* no Requested Device Type attributes -> match */
2215
2216 if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
2217 attr.num_req_dev_type))
2218 return 1; /* Own Primary Device Type matches */
2219
2220 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++) {
2221 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
2222 attr.req_dev_type,
2223 attr.num_req_dev_type))
2224 return 1; /* Own Secondary Device Type matches */
2225 }
2226
2227 /* No matching device type found */
2228 return 0;
2229 }
2230
2231
p2p_build_probe_resp_ies(struct p2p_data * p2p,const u8 * query_hash,u8 query_count)2232 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p,
2233 const u8 *query_hash,
2234 u8 query_count)
2235 {
2236 struct wpabuf *buf;
2237 u8 *len;
2238 int pw_id = -1;
2239 size_t extra = 0;
2240
2241 #ifdef CONFIG_WIFI_DISPLAY
2242 if (p2p->wfd_ie_probe_resp)
2243 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
2244 #endif /* CONFIG_WIFI_DISPLAY */
2245
2246 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2247 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2248
2249 if (query_count)
2250 extra += MAX_SVC_ADV_IE_LEN;
2251
2252 buf = wpabuf_alloc(1000 + extra);
2253 if (buf == NULL)
2254 return NULL;
2255
2256 if (p2p->go_neg_peer) {
2257 /* Advertise immediate availability of WPS credential */
2258 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
2259 }
2260
2261 if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) {
2262 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response");
2263 wpabuf_free(buf);
2264 return NULL;
2265 }
2266
2267 #ifdef CONFIG_WIFI_DISPLAY
2268 if (p2p->wfd_ie_probe_resp)
2269 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
2270 #endif /* CONFIG_WIFI_DISPLAY */
2271
2272 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2273 wpabuf_put_buf(buf,
2274 p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2275
2276 /* P2P IE */
2277 len = p2p_buf_add_ie_hdr(buf);
2278 p2p_buf_add_capability(buf, p2p->dev_capab &
2279 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2280 if (p2p->ext_listen_interval)
2281 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
2282 p2p->ext_listen_interval);
2283 p2p_buf_add_device_info(buf, p2p, NULL);
2284 p2p_buf_update_ie_hdr(buf, len);
2285
2286 if (query_count) {
2287 p2p_buf_add_service_instance(buf, p2p, query_count, query_hash,
2288 p2p->p2ps_adv_list);
2289 }
2290
2291 return buf;
2292 }
2293
p2p_build_probe_resp_buf(struct p2p_data * p2p,struct wpabuf * buf,struct wpabuf * ies,const u8 * addr,int rx_freq)2294 static int p2p_build_probe_resp_buf(struct p2p_data *p2p, struct wpabuf *buf,
2295 struct wpabuf *ies,
2296 const u8 *addr, int rx_freq)
2297 {
2298 struct ieee80211_mgmt *resp;
2299 u8 channel, op_class;
2300
2301 resp = wpabuf_put(buf, offsetof(struct ieee80211_mgmt,
2302 u.probe_resp.variable));
2303
2304 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2305 (WLAN_FC_STYPE_PROBE_RESP << 4));
2306 os_memcpy(resp->da, addr, ETH_ALEN);
2307 os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2308 os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2309 resp->u.probe_resp.beacon_int = host_to_le16(100);
2310 /* hardware or low-level driver will setup seq_ctrl and timestamp */
2311 resp->u.probe_resp.capab_info =
2312 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2313 WLAN_CAPABILITY_PRIVACY |
2314 WLAN_CAPABILITY_SHORT_SLOT_TIME);
2315
2316 wpabuf_put_u8(buf, WLAN_EID_SSID);
2317 wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2318 wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2319
2320 wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2321 wpabuf_put_u8(buf, 8);
2322 wpabuf_put_u8(buf, (60 / 5) | 0x80);
2323 wpabuf_put_u8(buf, 90 / 5);
2324 wpabuf_put_u8(buf, (120 / 5) | 0x80);
2325 wpabuf_put_u8(buf, 180 / 5);
2326 wpabuf_put_u8(buf, (240 / 5) | 0x80);
2327 wpabuf_put_u8(buf, 360 / 5);
2328 wpabuf_put_u8(buf, 480 / 5);
2329 wpabuf_put_u8(buf, 540 / 5);
2330
2331 if (!rx_freq) {
2332 channel = p2p->cfg->channel;
2333 } else if (p2p_freq_to_channel(rx_freq, &op_class, &channel)) {
2334 p2p_err(p2p, "Failed to convert freq to channel");
2335 return -1;
2336 }
2337
2338 wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2339 wpabuf_put_u8(buf, 1);
2340 wpabuf_put_u8(buf, channel);
2341
2342 wpabuf_put_buf(buf, ies);
2343
2344 return 0;
2345 }
2346
p2p_service_find_asp(struct p2p_data * p2p,const u8 * hash)2347 static int p2p_service_find_asp(struct p2p_data *p2p, const u8 *hash)
2348 {
2349 struct p2ps_advertisement *adv_data;
2350 int any_wfa;
2351
2352 p2p_dbg(p2p, "ASP find - ASP list: %p", p2p->p2ps_adv_list);
2353
2354 /* Wildcard org.wi-fi.wfds matches any WFA spec defined service */
2355 any_wfa = os_memcmp(hash, p2p->wild_card_hash, P2PS_HASH_LEN) == 0;
2356
2357 adv_data = p2p->p2ps_adv_list;
2358 while (adv_data) {
2359 if (os_memcmp(hash, adv_data->hash, P2PS_HASH_LEN) == 0)
2360 return 1; /* exact hash match */
2361 if (any_wfa &&
2362 os_strncmp(adv_data->svc_name, P2PS_WILD_HASH_STR,
2363 os_strlen(P2PS_WILD_HASH_STR)) == 0)
2364 return 1; /* WFA service match */
2365 adv_data = adv_data->next;
2366 }
2367
2368 return 0;
2369 }
2370
2371
2372 static enum p2p_probe_req_status
p2p_reply_probe(struct p2p_data * p2p,const u8 * addr,const u8 * dst,const u8 * bssid,const u8 * ie,size_t ie_len,unsigned int rx_freq)2373 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2374 const u8 *bssid, const u8 *ie, size_t ie_len,
2375 unsigned int rx_freq)
2376 {
2377 struct ieee802_11_elems elems;
2378 struct wpabuf *buf;
2379 struct p2p_message msg;
2380 struct wpabuf *ies;
2381
2382 if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
2383 ParseFailed) {
2384 /* Ignore invalid Probe Request frames */
2385 p2p_dbg(p2p, "Could not parse Probe Request frame - ignore it");
2386 return P2P_PREQ_MALFORMED;
2387 }
2388
2389 if (elems.p2p == NULL) {
2390 /* not a P2P probe - ignore it */
2391 p2p_dbg(p2p, "Not a P2P probe - ignore it");
2392 return P2P_PREQ_NOT_P2P;
2393 }
2394
2395 if (dst && !is_broadcast_ether_addr(dst) &&
2396 !ether_addr_equal(dst, p2p->cfg->dev_addr)) {
2397 /* Not sent to the broadcast address or our P2P Device Address
2398 */
2399 p2p_dbg(p2p, "Probe Req DA " MACSTR " not ours - ignore it",
2400 MAC2STR(dst));
2401 return P2P_PREQ_NOT_PROCESSED;
2402 }
2403
2404 if (bssid && !is_broadcast_ether_addr(bssid)) {
2405 /* Not sent to the Wildcard BSSID */
2406 p2p_dbg(p2p, "Probe Req BSSID " MACSTR " not wildcard - ignore it",
2407 MAC2STR(bssid));
2408 return P2P_PREQ_NOT_PROCESSED;
2409 }
2410
2411 if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2412 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2413 0) {
2414 /* not using P2P Wildcard SSID - ignore */
2415 p2p_dbg(p2p, "Probe Req not using P2P Wildcard SSID - ignore it");
2416 return P2P_PREQ_NOT_PROCESSED;
2417 }
2418
2419 if (supp_rates_11b_only(&elems)) {
2420 /* Indicates support for 11b rates only */
2421 p2p_dbg(p2p, "Probe Req with 11b rates only supported - ignore it");
2422 return P2P_PREQ_NOT_P2P;
2423 }
2424
2425 os_memset(&msg, 0, sizeof(msg));
2426 if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2427 /* Could not parse P2P attributes */
2428 p2p_dbg(p2p, "Could not parse P2P attributes in Probe Req - ignore it");
2429 return P2P_PREQ_NOT_P2P;
2430 }
2431
2432 if (msg.service_hash && msg.service_hash_count) {
2433 const u8 *hash = msg.service_hash;
2434 u8 i;
2435 int p2ps_svc_found = 0;
2436
2437 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",
2438 p2p->in_listen, p2p->drv_in_listen, rx_freq,
2439 p2p->cfg->channel, p2p->pending_listen_freq);
2440
2441 if (!p2p->in_listen && !p2p->drv_in_listen &&
2442 p2p->pending_listen_freq && rx_freq &&
2443 rx_freq != p2p->pending_listen_freq) {
2444 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",
2445 rx_freq, p2p->pending_listen_freq);
2446 p2p_parse_free(&msg);
2447 return P2P_PREQ_NOT_LISTEN;
2448 }
2449
2450 for (i = 0; i < msg.service_hash_count; i++) {
2451 if (p2p_service_find_asp(p2p, hash)) {
2452 p2p_dbg(p2p, "Service Hash match found: "
2453 MACSTR, MAC2STR(hash));
2454 p2ps_svc_found = 1;
2455 break;
2456 }
2457 hash += P2PS_HASH_LEN;
2458 }
2459
2460 /* Probed hash unknown */
2461 if (!p2ps_svc_found) {
2462 p2p_dbg(p2p, "No Service Hash match found");
2463 p2p_parse_free(&msg);
2464 return P2P_PREQ_NOT_PROCESSED;
2465 }
2466 } else {
2467 /* This is not a P2PS Probe Request */
2468 p2p_dbg(p2p, "No P2PS Hash in Probe Request");
2469
2470 if (!p2p->in_listen || !p2p->drv_in_listen) {
2471 /* not in Listen state - ignore Probe Request */
2472 p2p_dbg(p2p, "Not in Listen state (in_listen=%d drv_in_listen=%d) - ignore Probe Request",
2473 p2p->in_listen, p2p->drv_in_listen);
2474 p2p_parse_free(&msg);
2475 return P2P_PREQ_NOT_LISTEN;
2476 }
2477 }
2478
2479 if (msg.device_id &&
2480 !ether_addr_equal(msg.device_id, p2p->cfg->dev_addr)) {
2481 /* Device ID did not match */
2482 p2p_dbg(p2p, "Probe Req requested Device ID " MACSTR " did not match - ignore it",
2483 MAC2STR(msg.device_id));
2484 p2p_parse_free(&msg);
2485 return P2P_PREQ_NOT_PROCESSED;
2486 }
2487
2488 /* Check Requested Device Type match */
2489 if (msg.wps_attributes &&
2490 !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2491 /* No match with Requested Device Type */
2492 p2p_dbg(p2p, "Probe Req requested Device Type did not match - ignore it");
2493 p2p_parse_free(&msg);
2494 return P2P_PREQ_NOT_PROCESSED;
2495 }
2496
2497 if (!p2p->cfg->send_probe_resp) {
2498 /* Response generated elsewhere */
2499 p2p_dbg(p2p, "Probe Resp generated elsewhere - do not generate additional response");
2500 p2p_parse_free(&msg);
2501 return P2P_PREQ_NOT_PROCESSED;
2502 }
2503
2504 p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
2505
2506 /*
2507 * We do not really have a specific BSS that this frame is advertising,
2508 * so build a frame that has some information in valid format. This is
2509 * really only used for discovery purposes, not to learn exact BSS
2510 * parameters.
2511 */
2512 ies = p2p_build_probe_resp_ies(p2p, msg.service_hash,
2513 msg.service_hash_count);
2514 p2p_parse_free(&msg);
2515 if (ies == NULL)
2516 return P2P_PREQ_NOT_PROCESSED;
2517
2518 buf = wpabuf_alloc(200 + wpabuf_len(ies));
2519 if (buf == NULL) {
2520 wpabuf_free(ies);
2521 return P2P_PREQ_NOT_PROCESSED;
2522 }
2523
2524 if (p2p_build_probe_resp_buf(p2p, buf, ies, addr, rx_freq)) {
2525 wpabuf_free(ies);
2526 wpabuf_free(buf);
2527 return P2P_PREQ_NOT_PROCESSED;
2528 }
2529
2530 wpabuf_free(ies);
2531
2532 p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf, rx_freq);
2533
2534 wpabuf_free(buf);
2535
2536 return P2P_PREQ_PROCESSED;
2537 }
2538
2539
2540 enum p2p_probe_req_status
p2p_probe_req_rx(struct p2p_data * p2p,const u8 * addr,const u8 * dst,const u8 * bssid,const u8 * ie,size_t ie_len,unsigned int rx_freq,int p2p_lo_started)2541 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2542 const u8 *bssid, const u8 *ie, size_t ie_len,
2543 unsigned int rx_freq, int p2p_lo_started)
2544 {
2545 enum p2p_probe_req_status res;
2546
2547 p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2548
2549 if (p2p_lo_started) {
2550 p2p_dbg(p2p,
2551 "Probe Response is offloaded, do not reply Probe Request");
2552 return P2P_PREQ_PROCESSED;
2553 }
2554
2555 res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len, rx_freq);
2556 if (res != P2P_PREQ_PROCESSED && res != P2P_PREQ_NOT_PROCESSED)
2557 return res;
2558
2559 /*
2560 * Activate a pending GO Negotiation/Invite flow if a received Probe
2561 * Request frame is from an expected peer. Some devices may share the
2562 * same address for P2P and non-P2P STA running simultaneously. The
2563 * P2P_PREQ_PROCESSED and P2P_PREQ_NOT_PROCESSED p2p_reply_probe()
2564 * return values verified above ensure we are handling a Probe Request
2565 * frame from a P2P peer.
2566 */
2567 if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2568 p2p->go_neg_peer &&
2569 ether_addr_equal(addr, p2p->go_neg_peer->info.p2p_device_addr) &&
2570 !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
2571 /* Received a Probe Request from GO Negotiation peer */
2572 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
2573 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2574 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2575 return res;
2576 }
2577
2578 if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2579 p2p->invite_peer &&
2580 (p2p->invite_peer->flags & P2P_DEV_WAIT_INV_REQ_ACK) &&
2581 ether_addr_equal(addr, p2p->invite_peer->info.p2p_device_addr)) {
2582 /* Received a Probe Request from Invite peer */
2583 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
2584 eloop_cancel_timeout(p2p_invite_start, p2p, NULL);
2585 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2586 return res;
2587 }
2588
2589 return res;
2590 }
2591
2592
p2p_assoc_req_ie_wlan_ap(struct p2p_data * p2p,const u8 * bssid,u8 * buf,size_t len,struct wpabuf * p2p_ie)2593 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2594 u8 *buf, size_t len, struct wpabuf *p2p_ie)
2595 {
2596 struct wpabuf *tmp;
2597 u8 *lpos;
2598 size_t tmplen;
2599 int res;
2600 u8 group_capab;
2601 struct p2p_message msg;
2602
2603 if (p2p_ie == NULL)
2604 return 0; /* WLAN AP is not a P2P manager */
2605
2606 os_memset(&msg, 0, sizeof(msg));
2607 if (p2p_parse_p2p_ie(p2p_ie, &msg) < 0)
2608 return 0;
2609
2610 p2p_dbg(p2p, "BSS P2P manageability %s",
2611 msg.manageability ? "enabled" : "disabled");
2612
2613 if (!msg.manageability)
2614 return 0;
2615
2616 /*
2617 * (Re)Association Request - P2P IE
2618 * P2P Capability attribute (shall be present)
2619 * P2P Interface attribute (present if concurrent device and
2620 * P2P Management is enabled)
2621 */
2622 tmp = wpabuf_alloc(200);
2623 if (tmp == NULL)
2624 return -1;
2625
2626 lpos = p2p_buf_add_ie_hdr(tmp);
2627 group_capab = 0;
2628 if (p2p->num_groups > 0) {
2629 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2630 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2631 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2632 p2p->cross_connect)
2633 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2634 }
2635 p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2636 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2637 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2638 p2p_buf_add_p2p_interface(tmp, p2p);
2639 p2p_buf_update_ie_hdr(tmp, lpos);
2640
2641 tmplen = wpabuf_len(tmp);
2642 if (tmplen > len)
2643 res = -1;
2644 else {
2645 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2646 res = tmplen;
2647 }
2648 wpabuf_free(tmp);
2649
2650 return res;
2651 }
2652
2653
p2p_assoc_req_ie(struct p2p_data * p2p,const u8 * bssid,u8 * buf,size_t len,int p2p_group,struct wpabuf * p2p_ie)2654 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2655 size_t len, int p2p_group, struct wpabuf *p2p_ie)
2656 {
2657 struct wpabuf *tmp;
2658 u8 *lpos;
2659 struct p2p_device *peer;
2660 size_t tmplen;
2661 int res;
2662 size_t extra = 0;
2663
2664 if (!p2p_group)
2665 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2666
2667 #ifdef CONFIG_WIFI_DISPLAY
2668 if (p2p->wfd_ie_assoc_req)
2669 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2670 #endif /* CONFIG_WIFI_DISPLAY */
2671
2672 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2673 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2674
2675 /*
2676 * (Re)Association Request - P2P IE
2677 * P2P Capability attribute (shall be present)
2678 * Extended Listen Timing (may be present)
2679 * P2P Device Info attribute (shall be present)
2680 */
2681 tmp = wpabuf_alloc(200 + extra);
2682 if (tmp == NULL)
2683 return -1;
2684
2685 #ifdef CONFIG_WIFI_DISPLAY
2686 if (p2p->wfd_ie_assoc_req)
2687 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2688 #endif /* CONFIG_WIFI_DISPLAY */
2689
2690 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2691 wpabuf_put_buf(tmp,
2692 p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2693
2694 peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2695
2696 lpos = p2p_buf_add_ie_hdr(tmp);
2697 p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2698 if (p2p->ext_listen_interval)
2699 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2700 p2p->ext_listen_interval);
2701 p2p_buf_add_device_info(tmp, p2p, peer);
2702 p2p_buf_update_ie_hdr(tmp, lpos);
2703
2704 tmplen = wpabuf_len(tmp);
2705 if (tmplen > len)
2706 res = -1;
2707 else {
2708 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2709 res = tmplen;
2710 }
2711 wpabuf_free(tmp);
2712
2713 return res;
2714 }
2715
2716
p2p_scan_result_text(const u8 * ies,size_t ies_len,char * buf,char * end)2717 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2718 {
2719 struct wpabuf *p2p_ie;
2720 int ret;
2721
2722 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2723 if (p2p_ie == NULL)
2724 return 0;
2725
2726 ret = p2p_attr_text(p2p_ie, buf, end);
2727 wpabuf_free(p2p_ie);
2728 return ret;
2729 }
2730
2731
2732 struct p2ps_advertisement *
p2p_service_p2ps_id(struct p2p_data * p2p,u32 adv_id)2733 p2p_service_p2ps_id(struct p2p_data *p2p, u32 adv_id)
2734 {
2735 struct p2ps_advertisement *adv_data;
2736
2737 if (!p2p)
2738 return NULL;
2739
2740 adv_data = p2p->p2ps_adv_list;
2741 while (adv_data) {
2742 if (adv_data->id == adv_id)
2743 return adv_data;
2744 adv_data = adv_data->next;
2745 }
2746
2747 return NULL;
2748 }
2749
2750
p2p_service_del_asp(struct p2p_data * p2p,u32 adv_id)2751 int p2p_service_del_asp(struct p2p_data *p2p, u32 adv_id)
2752 {
2753 struct p2ps_advertisement *adv_data;
2754 struct p2ps_advertisement **prior;
2755
2756 if (!p2p)
2757 return -1;
2758
2759 adv_data = p2p->p2ps_adv_list;
2760 prior = &p2p->p2ps_adv_list;
2761 while (adv_data) {
2762 if (adv_data->id == adv_id) {
2763 p2p_dbg(p2p, "Delete ASP adv_id=0x%x", adv_id);
2764 *prior = adv_data->next;
2765 os_free(adv_data);
2766 return 0;
2767 }
2768 prior = &adv_data->next;
2769 adv_data = adv_data->next;
2770 }
2771
2772 return -1;
2773 }
2774
2775
p2p_service_add_asp(struct p2p_data * p2p,int auto_accept,u32 adv_id,const char * adv_str,u8 svc_state,u16 config_methods,const char * svc_info,const u8 * cpt_priority)2776 int p2p_service_add_asp(struct p2p_data *p2p, int auto_accept, u32 adv_id,
2777 const char *adv_str, u8 svc_state, u16 config_methods,
2778 const char *svc_info, const u8 *cpt_priority)
2779 {
2780 struct p2ps_advertisement *adv_data, *tmp, **prev;
2781 u8 buf[P2PS_HASH_LEN];
2782 size_t adv_data_len, adv_len, info_len = 0;
2783 int i;
2784
2785 if (!p2p || !adv_str || !adv_str[0] || !cpt_priority)
2786 return -1;
2787
2788 if (!(config_methods & p2p->cfg->config_methods)) {
2789 p2p_dbg(p2p, "Config methods not supported svc: 0x%x dev: 0x%x",
2790 config_methods, p2p->cfg->config_methods);
2791 return -1;
2792 }
2793
2794 if (!p2ps_gen_hash(p2p, adv_str, buf))
2795 return -1;
2796
2797 if (svc_info)
2798 info_len = os_strlen(svc_info);
2799 adv_len = os_strlen(adv_str);
2800 adv_data_len = sizeof(struct p2ps_advertisement) + adv_len + 1 +
2801 info_len + 1;
2802
2803 adv_data = os_zalloc(adv_data_len);
2804 if (!adv_data)
2805 return -1;
2806
2807 os_memcpy(adv_data->hash, buf, P2PS_HASH_LEN);
2808 adv_data->id = adv_id;
2809 adv_data->state = svc_state;
2810 adv_data->config_methods = config_methods & p2p->cfg->config_methods;
2811 adv_data->auto_accept = (u8) auto_accept;
2812 os_memcpy(adv_data->svc_name, adv_str, adv_len);
2813
2814 for (i = 0; cpt_priority[i] && i < P2PS_FEATURE_CAPAB_CPT_MAX; i++) {
2815 adv_data->cpt_priority[i] = cpt_priority[i];
2816 adv_data->cpt_mask |= cpt_priority[i];
2817 }
2818
2819 if (svc_info && info_len) {
2820 adv_data->svc_info = &adv_data->svc_name[adv_len + 1];
2821 os_memcpy(adv_data->svc_info, svc_info, info_len);
2822 }
2823
2824 /*
2825 * Group Advertisements by service string. They do not need to be
2826 * sorted, but groups allow easier Probe Response instance grouping
2827 */
2828 tmp = p2p->p2ps_adv_list;
2829 prev = &p2p->p2ps_adv_list;
2830 while (tmp) {
2831 if (tmp->id == adv_data->id) {
2832 if (os_strcmp(tmp->svc_name, adv_data->svc_name) != 0) {
2833 os_free(adv_data);
2834 return -1;
2835 }
2836 adv_data->next = tmp->next;
2837 *prev = adv_data;
2838 os_free(tmp);
2839 goto inserted;
2840 } else {
2841 if (os_strcmp(tmp->svc_name, adv_data->svc_name) == 0) {
2842 adv_data->next = tmp->next;
2843 tmp->next = adv_data;
2844 goto inserted;
2845 }
2846 }
2847 prev = &tmp->next;
2848 tmp = tmp->next;
2849 }
2850
2851 /* No svc_name match found */
2852 adv_data->next = p2p->p2ps_adv_list;
2853 p2p->p2ps_adv_list = adv_data;
2854
2855 inserted:
2856 p2p_dbg(p2p,
2857 "Added ASP advertisement adv_id=0x%x config_methods=0x%x svc_state=0x%x adv_str='%s' cpt_mask=0x%x",
2858 adv_id, adv_data->config_methods, svc_state, adv_str,
2859 adv_data->cpt_mask);
2860
2861 return 0;
2862 }
2863
2864
p2p_service_flush_asp(struct p2p_data * p2p)2865 void p2p_service_flush_asp(struct p2p_data *p2p)
2866 {
2867 struct p2ps_advertisement *adv, *prev;
2868
2869 if (!p2p)
2870 return;
2871
2872 adv = p2p->p2ps_adv_list;
2873 while (adv) {
2874 prev = adv;
2875 adv = adv->next;
2876 os_free(prev);
2877 }
2878
2879 p2p->p2ps_adv_list = NULL;
2880 p2ps_prov_free(p2p);
2881 p2p_dbg(p2p, "All ASP advertisements flushed");
2882 }
2883
2884
p2p_parse_dev_addr_in_p2p_ie(struct wpabuf * p2p_ie,u8 * dev_addr)2885 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2886 {
2887 struct p2p_message msg;
2888
2889 os_memset(&msg, 0, sizeof(msg));
2890 if (p2p_parse_p2p_ie(p2p_ie, &msg))
2891 return -1;
2892
2893 if (msg.p2p_device_addr) {
2894 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2895 return 0;
2896 } else if (msg.device_id) {
2897 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2898 return 0;
2899 }
2900 return -1;
2901 }
2902
2903
p2p_parse_dev_addr(const u8 * ies,size_t ies_len,u8 * dev_addr)2904 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2905 {
2906 struct wpabuf *p2p_ie;
2907 int ret;
2908
2909 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2910 P2P_IE_VENDOR_TYPE);
2911 if (p2p_ie == NULL)
2912 return -1;
2913 ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2914 wpabuf_free(p2p_ie);
2915 return ret;
2916 }
2917
2918
p2p_clear_go_neg(struct p2p_data * p2p)2919 static void p2p_clear_go_neg(struct p2p_data *p2p)
2920 {
2921 p2p->go_neg_peer = NULL;
2922 p2p_clear_timeout(p2p);
2923 p2p_set_state(p2p, P2P_IDLE);
2924 }
2925
2926
p2p_wps_success_cb(struct p2p_data * p2p,const u8 * mac_addr)2927 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2928 {
2929 if (p2p->go_neg_peer == NULL) {
2930 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
2931 return; /* No pending Group Formation */
2932 }
2933
2934 if (!ether_addr_equal(mac_addr, p2p->go_neg_peer->intended_addr)) {
2935 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2936 MACSTR " (GO Negotiation peer " MACSTR ")",
2937 MAC2STR(mac_addr),
2938 MAC2STR(p2p->go_neg_peer->intended_addr));
2939 return; /* Ignore unexpected peer address */
2940 }
2941
2942 p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
2943 MAC2STR(mac_addr));
2944
2945 p2p_clear_go_neg(p2p);
2946 }
2947
2948
p2p_group_formation_failed(struct p2p_data * p2p)2949 void p2p_group_formation_failed(struct p2p_data *p2p)
2950 {
2951 if (p2p->go_neg_peer == NULL) {
2952 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
2953 return; /* No pending Group Formation */
2954 }
2955
2956 p2p_dbg(p2p, "Group Formation failed with " MACSTR,
2957 MAC2STR(p2p->go_neg_peer->intended_addr));
2958
2959 p2p_clear_go_neg(p2p);
2960 }
2961
2962
is_p2p_6ghz_disabled(struct p2p_data * p2p)2963 bool is_p2p_6ghz_disabled(struct p2p_data *p2p)
2964 {
2965 if (p2p)
2966 return p2p->cfg->p2p_6ghz_disable;
2967 return false;
2968 }
2969
2970
p2p_init(const struct p2p_config * cfg)2971 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2972 {
2973 struct p2p_data *p2p;
2974
2975 if (cfg->max_peers < 1 ||
2976 cfg->passphrase_len < 8 || cfg->passphrase_len > 63)
2977 return NULL;
2978
2979 p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2980 if (p2p == NULL)
2981 return NULL;
2982 p2p->cfg = (struct p2p_config *) (p2p + 1);
2983 os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2984 if (cfg->dev_name)
2985 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2986 if (cfg->manufacturer)
2987 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2988 if (cfg->model_name)
2989 p2p->cfg->model_name = os_strdup(cfg->model_name);
2990 if (cfg->model_number)
2991 p2p->cfg->model_number = os_strdup(cfg->model_number);
2992 if (cfg->serial_number)
2993 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2994 if (cfg->pref_chan) {
2995 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2996 sizeof(struct p2p_channel));
2997 if (p2p->cfg->pref_chan) {
2998 os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2999 cfg->num_pref_chan *
3000 sizeof(struct p2p_channel));
3001 } else
3002 p2p->cfg->num_pref_chan = 0;
3003 }
3004
3005 p2ps_gen_hash(p2p, P2PS_WILD_HASH_STR, p2p->wild_card_hash);
3006
3007 p2p->min_disc_int = 1;
3008 p2p->max_disc_int = 3;
3009 p2p->max_disc_tu = -1;
3010
3011 if (os_get_random(&p2p->next_tie_breaker, 1) < 0)
3012 p2p->next_tie_breaker = 0;
3013 p2p->next_tie_breaker &= 0x01;
3014 if (cfg->sd_request)
3015 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
3016 p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
3017 if (cfg->concurrent_operations)
3018 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
3019 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3020
3021 dl_list_init(&p2p->devices);
3022
3023 p2p->go_timeout = 100;
3024 p2p->client_timeout = 20;
3025 p2p->num_p2p_sd_queries = 0;
3026
3027 p2p_dbg(p2p, "initialized");
3028 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
3029 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
3030
3031 return p2p;
3032 }
3033
3034
p2p_deinit(struct p2p_data * p2p)3035 void p2p_deinit(struct p2p_data *p2p)
3036 {
3037 #ifdef CONFIG_WIFI_DISPLAY
3038 wpabuf_free(p2p->wfd_ie_beacon);
3039 wpabuf_free(p2p->wfd_ie_probe_req);
3040 wpabuf_free(p2p->wfd_ie_probe_resp);
3041 wpabuf_free(p2p->wfd_ie_assoc_req);
3042 wpabuf_free(p2p->wfd_ie_invitation);
3043 wpabuf_free(p2p->wfd_ie_prov_disc_req);
3044 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
3045 wpabuf_free(p2p->wfd_ie_go_neg);
3046 wpabuf_free(p2p->wfd_dev_info);
3047 wpabuf_free(p2p->wfd_assoc_bssid);
3048 wpabuf_free(p2p->wfd_coupled_sink_info);
3049 wpabuf_free(p2p->wfd_r2_dev_info);
3050 #endif /* CONFIG_WIFI_DISPLAY */
3051
3052 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
3053 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
3054 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
3055 p2p_flush(p2p);
3056 p2p_free_req_dev_types(p2p);
3057 os_free(p2p->cfg->dev_name);
3058 os_free(p2p->cfg->manufacturer);
3059 os_free(p2p->cfg->model_name);
3060 os_free(p2p->cfg->model_number);
3061 os_free(p2p->cfg->serial_number);
3062 os_free(p2p->cfg->pref_chan);
3063 os_free(p2p->groups);
3064 p2ps_prov_free(p2p);
3065 wpabuf_free(p2p->sd_resp);
3066 p2p_remove_wps_vendor_extensions(p2p);
3067 os_free(p2p->no_go_freq.range);
3068 p2p_service_flush_asp(p2p);
3069
3070 os_free(p2p);
3071 }
3072
3073
p2p_flush(struct p2p_data * p2p)3074 void p2p_flush(struct p2p_data *p2p)
3075 {
3076 struct p2p_device *dev, *prev;
3077
3078 p2p_ext_listen(p2p, 0, 0);
3079 p2p_stop_find(p2p);
3080 dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
3081 list) {
3082 dl_list_del(&dev->list);
3083 p2p_device_free(p2p, dev);
3084 }
3085 p2p_free_sd_queries(p2p);
3086 p2p->ssid_set = 0;
3087 p2ps_prov_free(p2p);
3088 p2p_reset_pending_pd(p2p);
3089 p2p->override_pref_op_class = 0;
3090 p2p->override_pref_channel = 0;
3091 }
3092
3093
p2p_unauthorize(struct p2p_data * p2p,const u8 * addr)3094 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
3095 {
3096 struct p2p_device *dev;
3097
3098 dev = p2p_get_device(p2p, addr);
3099 if (dev == NULL)
3100 return -1;
3101
3102 p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
3103
3104 if (p2p->go_neg_peer == dev) {
3105 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
3106 p2p->go_neg_peer = NULL;
3107 }
3108
3109 dev->wps_method = WPS_NOT_READY;
3110 dev->oob_pw_id = 0;
3111 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
3112 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
3113
3114 return 0;
3115 }
3116
3117
p2p_set_dev_name(struct p2p_data * p2p,const char * dev_name)3118 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
3119 {
3120 os_free(p2p->cfg->dev_name);
3121 if (dev_name) {
3122 p2p->cfg->dev_name = os_strdup(dev_name);
3123 if (p2p->cfg->dev_name == NULL)
3124 return -1;
3125 } else
3126 p2p->cfg->dev_name = NULL;
3127 return 0;
3128 }
3129
3130
p2p_set_manufacturer(struct p2p_data * p2p,const char * manufacturer)3131 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
3132 {
3133 os_free(p2p->cfg->manufacturer);
3134 p2p->cfg->manufacturer = NULL;
3135 if (manufacturer) {
3136 p2p->cfg->manufacturer = os_strdup(manufacturer);
3137 if (p2p->cfg->manufacturer == NULL)
3138 return -1;
3139 }
3140
3141 return 0;
3142 }
3143
3144
p2p_set_model_name(struct p2p_data * p2p,const char * model_name)3145 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
3146 {
3147 os_free(p2p->cfg->model_name);
3148 p2p->cfg->model_name = NULL;
3149 if (model_name) {
3150 p2p->cfg->model_name = os_strdup(model_name);
3151 if (p2p->cfg->model_name == NULL)
3152 return -1;
3153 }
3154
3155 return 0;
3156 }
3157
3158
p2p_set_model_number(struct p2p_data * p2p,const char * model_number)3159 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
3160 {
3161 os_free(p2p->cfg->model_number);
3162 p2p->cfg->model_number = NULL;
3163 if (model_number) {
3164 p2p->cfg->model_number = os_strdup(model_number);
3165 if (p2p->cfg->model_number == NULL)
3166 return -1;
3167 }
3168
3169 return 0;
3170 }
3171
3172
p2p_set_serial_number(struct p2p_data * p2p,const char * serial_number)3173 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
3174 {
3175 os_free(p2p->cfg->serial_number);
3176 p2p->cfg->serial_number = NULL;
3177 if (serial_number) {
3178 p2p->cfg->serial_number = os_strdup(serial_number);
3179 if (p2p->cfg->serial_number == NULL)
3180 return -1;
3181 }
3182
3183 return 0;
3184 }
3185
3186
p2p_set_config_methods(struct p2p_data * p2p,u16 config_methods)3187 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
3188 {
3189 p2p->cfg->config_methods = config_methods;
3190 }
3191
3192
p2p_set_uuid(struct p2p_data * p2p,const u8 * uuid)3193 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
3194 {
3195 os_memcpy(p2p->cfg->uuid, uuid, 16);
3196 }
3197
3198
p2p_set_pri_dev_type(struct p2p_data * p2p,const u8 * pri_dev_type)3199 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
3200 {
3201 os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
3202 return 0;
3203 }
3204
3205
p2p_set_sec_dev_types(struct p2p_data * p2p,const u8 dev_types[][8],size_t num_dev_types)3206 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
3207 size_t num_dev_types)
3208 {
3209 if (num_dev_types > P2P_SEC_DEVICE_TYPES)
3210 num_dev_types = P2P_SEC_DEVICE_TYPES;
3211 p2p->cfg->num_sec_dev_types = num_dev_types;
3212 os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
3213 return 0;
3214 }
3215
3216
p2p_remove_wps_vendor_extensions(struct p2p_data * p2p)3217 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
3218 {
3219 int i;
3220
3221 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3222 wpabuf_free(p2p->wps_vendor_ext[i]);
3223 p2p->wps_vendor_ext[i] = NULL;
3224 }
3225 }
3226
3227
p2p_add_wps_vendor_extension(struct p2p_data * p2p,const struct wpabuf * vendor_ext)3228 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
3229 const struct wpabuf *vendor_ext)
3230 {
3231 int i;
3232
3233 if (vendor_ext == NULL)
3234 return -1;
3235
3236 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3237 if (p2p->wps_vendor_ext[i] == NULL)
3238 break;
3239 }
3240 if (i >= P2P_MAX_WPS_VENDOR_EXT)
3241 return -1;
3242
3243 p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
3244 if (p2p->wps_vendor_ext[i] == NULL)
3245 return -1;
3246
3247 return 0;
3248 }
3249
3250
p2p_set_country(struct p2p_data * p2p,const char * country)3251 int p2p_set_country(struct p2p_data *p2p, const char *country)
3252 {
3253 os_memcpy(p2p->cfg->country, country, 3);
3254 return 0;
3255 }
3256
3257
p2p_pre_find_operation(struct p2p_data * p2p,struct p2p_device * dev)3258 static int p2p_pre_find_operation(struct p2p_data *p2p, struct p2p_device *dev)
3259 {
3260 int res;
3261
3262 if (dev->sd_pending_bcast_queries == 0) {
3263 /* Initialize with total number of registered broadcast
3264 * SD queries. */
3265 dev->sd_pending_bcast_queries = p2p->num_p2p_sd_queries;
3266 }
3267
3268 res = p2p_start_sd(p2p, dev);
3269 if (res == -2)
3270 return -2;
3271 if (res == 0)
3272 return 1;
3273
3274 if (dev->req_config_methods &&
3275 !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
3276 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3277 MACSTR " (config methods 0x%x)",
3278 MAC2STR(dev->info.p2p_device_addr),
3279 dev->req_config_methods);
3280 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
3281 return 1;
3282 }
3283
3284 return 0;
3285 }
3286
3287
p2p_continue_find(struct p2p_data * p2p)3288 void p2p_continue_find(struct p2p_data *p2p)
3289 {
3290 struct p2p_device *dev;
3291 int found, res;
3292
3293 p2p_set_state(p2p, P2P_SEARCH);
3294
3295 /* Continue from the device following the last iteration */
3296 found = 0;
3297 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3298 if (dev == p2p->last_p2p_find_oper) {
3299 found = 1;
3300 continue;
3301 }
3302 if (!found)
3303 continue;
3304 res = p2p_pre_find_operation(p2p, dev);
3305 if (res > 0) {
3306 p2p->last_p2p_find_oper = dev;
3307 return;
3308 }
3309 if (res == -2)
3310 goto skip_sd;
3311 }
3312
3313 /*
3314 * Wrap around to the beginning of the list and continue until the last
3315 * iteration device.
3316 */
3317 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3318 res = p2p_pre_find_operation(p2p, dev);
3319 if (res > 0) {
3320 p2p->last_p2p_find_oper = dev;
3321 return;
3322 }
3323 if (res == -2)
3324 goto skip_sd;
3325 if (dev == p2p->last_p2p_find_oper)
3326 break;
3327 }
3328
3329 skip_sd:
3330 os_memset(p2p->sd_query_no_ack, 0, ETH_ALEN);
3331 p2p_listen_in_find(p2p, 1);
3332 }
3333
3334
p2p_sd_query_cb(struct p2p_data * p2p,int success)3335 void p2p_sd_query_cb(struct p2p_data *p2p, int success)
3336 {
3337 p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
3338 success);
3339 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3340
3341 if (!success) {
3342 if (p2p->sd_peer) {
3343 if (is_zero_ether_addr(p2p->sd_query_no_ack)) {
3344 os_memcpy(p2p->sd_query_no_ack,
3345 p2p->sd_peer->info.p2p_device_addr,
3346 ETH_ALEN);
3347 p2p_dbg(p2p,
3348 "First SD Query no-ACK in this search iteration: "
3349 MACSTR, MAC2STR(p2p->sd_query_no_ack));
3350 }
3351 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3352 }
3353 p2p->sd_peer = NULL;
3354 if (p2p->state != P2P_IDLE)
3355 p2p_continue_find(p2p);
3356 return;
3357 }
3358
3359 if (p2p->sd_peer == NULL) {
3360 p2p_dbg(p2p, "No SD peer entry known");
3361 if (p2p->state != P2P_IDLE)
3362 p2p_continue_find(p2p);
3363 return;
3364 }
3365
3366 if (p2p->sd_query && p2p->sd_query->for_all_peers) {
3367 /* Update the pending broadcast SD query count for this device
3368 */
3369 p2p->sd_peer->sd_pending_bcast_queries--;
3370
3371 /*
3372 * If there are no pending broadcast queries for this device,
3373 * mark it as done (-1).
3374 */
3375 if (p2p->sd_peer->sd_pending_bcast_queries == 0)
3376 p2p->sd_peer->sd_pending_bcast_queries = -1;
3377 }
3378
3379 /* Wait for response from the peer */
3380 p2p_set_state(p2p, P2P_SD_DURING_FIND);
3381 p2p_set_timeout(p2p, 0, 200000);
3382 }
3383
3384
3385 /**
3386 * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
3387 * @p2p: P2P module context from p2p_init()
3388 */
p2p_retry_pd(struct p2p_data * p2p)3389 static void p2p_retry_pd(struct p2p_data *p2p)
3390 {
3391 struct p2p_device *dev;
3392
3393 /*
3394 * Retry the prov disc req attempt only for the peer that the user had
3395 * requested.
3396 */
3397
3398 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3399 if (!ether_addr_equal(p2p->pending_pd_devaddr,
3400 dev->info.p2p_device_addr))
3401 continue;
3402 if (!dev->req_config_methods)
3403 continue;
3404
3405 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3406 MACSTR " (config methods 0x%x)",
3407 MAC2STR(dev->info.p2p_device_addr),
3408 dev->req_config_methods);
3409 p2p_send_prov_disc_req(p2p, dev,
3410 dev->flags & P2P_DEV_PD_FOR_JOIN,
3411 p2p->pd_force_freq);
3412 return;
3413 }
3414 }
3415
3416
p2p_prov_disc_cb(struct p2p_data * p2p,int success)3417 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
3418 {
3419 p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
3420 success);
3421
3422 /*
3423 * Postpone resetting the pending action state till after we actually
3424 * time out. This allows us to take some action like notifying any
3425 * interested parties about no response to the request.
3426 *
3427 * When the timer (below) goes off we check in IDLE, SEARCH, or
3428 * LISTEN_ONLY state, which are the only allowed states to issue a PD
3429 * requests in, if this was still pending and then raise notification.
3430 */
3431
3432 if (!success) {
3433 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3434
3435 if (p2p->user_initiated_pd &&
3436 (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
3437 {
3438 /* Retry request from timeout to avoid busy loops */
3439 p2p->pending_action_state = P2P_PENDING_PD;
3440 p2p_set_timeout(p2p, 0, 50000);
3441 } else if (p2p->state != P2P_IDLE)
3442 p2p_continue_find(p2p);
3443 else if (p2p->user_initiated_pd) {
3444 p2p->pending_action_state = P2P_PENDING_PD;
3445 p2p_set_timeout(p2p, 0, 300000);
3446 }
3447 return;
3448 }
3449
3450 /*
3451 * If after PD Request the peer doesn't expect to receive PD Response
3452 * the PD Request ACK indicates a completion of the current PD. This
3453 * happens only on the advertiser side sending the follow-on PD Request
3454 * with the status different than 12 (Success: accepted by user).
3455 */
3456 if (p2p->p2ps_prov && !p2p->p2ps_prov->pd_seeker &&
3457 p2p->p2ps_prov->status != P2P_SC_SUCCESS_DEFERRED) {
3458 p2p_dbg(p2p, "P2PS PD completion on Follow-on PD Request ACK");
3459
3460 if (p2p->send_action_in_progress) {
3461 p2p->send_action_in_progress = 0;
3462 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3463 }
3464
3465 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3466
3467 if (p2p->cfg->p2ps_prov_complete) {
3468 p2p->cfg->p2ps_prov_complete(
3469 p2p->cfg->cb_ctx,
3470 p2p->p2ps_prov->status,
3471 p2p->p2ps_prov->adv_mac,
3472 p2p->p2ps_prov->adv_mac,
3473 p2p->p2ps_prov->session_mac,
3474 NULL, p2p->p2ps_prov->adv_id,
3475 p2p->p2ps_prov->session_id,
3476 0, 0, NULL, 0, 0, 0,
3477 NULL, NULL, 0, 0, NULL, 0);
3478 }
3479
3480 if (p2p->user_initiated_pd)
3481 p2p_reset_pending_pd(p2p);
3482
3483 p2ps_prov_free(p2p);
3484 return;
3485 }
3486
3487 /*
3488 * This postponing, of resetting pending_action_state, needs to be
3489 * done only for user initiated PD requests and not internal ones.
3490 */
3491 if (p2p->user_initiated_pd)
3492 p2p->pending_action_state = P2P_PENDING_PD;
3493 else
3494 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3495
3496 /* Wait for response from the peer */
3497 if (p2p->state == P2P_SEARCH)
3498 p2p_set_state(p2p, P2P_PD_DURING_FIND);
3499 p2p_set_timeout(p2p, 0, 200000);
3500 }
3501
3502
p2p_prov_disc_resp_cb(struct p2p_data * p2p,int success)3503 static void p2p_prov_disc_resp_cb(struct p2p_data *p2p, int success)
3504 {
3505 p2p_dbg(p2p, "Provision Discovery Response TX callback: success=%d",
3506 success);
3507
3508 if (p2p->send_action_in_progress) {
3509 p2p->send_action_in_progress = 0;
3510 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3511 }
3512
3513 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3514
3515 if (!success) {
3516 if (p2p->state == P2P_SEARCH)
3517 p2p_continue_find(p2p);
3518 return;
3519 }
3520
3521 if (!p2p->cfg->prov_disc_resp_cb ||
3522 p2p->cfg->prov_disc_resp_cb(p2p->cfg->cb_ctx) < 1) {
3523 if (p2p->state == P2P_SEARCH)
3524 p2p_continue_find(p2p);
3525 return;
3526 }
3527
3528 p2p_dbg(p2p,
3529 "Post-Provision Discovery operations started - do not try to continue other P2P operations");
3530 }
3531
3532
p2p_scan_res_handler(struct p2p_data * p2p,const u8 * bssid,int freq,struct os_reltime * rx_time,int level,const u8 * ies,size_t ies_len)3533 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
3534 struct os_reltime *rx_time, int level, const u8 *ies,
3535 size_t ies_len)
3536 {
3537 if (os_reltime_before(rx_time, &p2p->find_start)) {
3538 /*
3539 * The driver may have cached (e.g., in cfg80211 BSS table) the
3540 * scan results for relatively long time. To avoid reporting
3541 * stale information, update P2P peers only based on results
3542 * that have based on frames received after the last p2p_find
3543 * operation was started.
3544 */
3545 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
3546 " (rx_time=%u.%06u find_start=%u.%06u)",
3547 MAC2STR(bssid), (unsigned int) rx_time->sec,
3548 (unsigned int) rx_time->usec,
3549 (unsigned int) p2p->find_start.sec,
3550 (unsigned int) p2p->find_start.usec);
3551 return 0;
3552 }
3553
3554 p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
3555
3556 return 0;
3557 }
3558
3559
p2p_scan_res_handled(struct p2p_data * p2p,unsigned int delay)3560 void p2p_scan_res_handled(struct p2p_data *p2p, unsigned int delay)
3561 {
3562 if (!p2p->p2p_scan_running) {
3563 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
3564 }
3565 p2p->p2p_scan_running = 0;
3566
3567 /* Use this delay only when p2p_find doesn't set it */
3568 if (!p2p->search_delay)
3569 p2p->search_delay = delay;
3570
3571 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
3572
3573 if (p2p_run_after_scan(p2p))
3574 return;
3575 if (p2p->state == P2P_SEARCH)
3576 p2p_continue_find(p2p);
3577 }
3578
3579
p2p_scan_ie(struct p2p_data * p2p,struct wpabuf * ies,const u8 * dev_id,unsigned int bands)3580 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id,
3581 unsigned int bands)
3582 {
3583 u8 dev_capab;
3584 u8 *len;
3585
3586 #ifdef CONFIG_WIFI_DISPLAY
3587 if (p2p->wfd_ie_probe_req)
3588 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
3589 #endif /* CONFIG_WIFI_DISPLAY */
3590
3591 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3592 wpabuf_put_buf(ies,
3593 p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3594
3595 len = p2p_buf_add_ie_hdr(ies);
3596
3597 dev_capab = p2p->dev_capab & ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3598
3599 /* P2PS requires Probe Request frames to include SD bit */
3600 if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3601 dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
3602
3603 p2p_buf_add_capability(ies, dev_capab, 0);
3604
3605 if (dev_id)
3606 p2p_buf_add_device_id(ies, dev_id);
3607 if (p2p->cfg->reg_class && p2p->cfg->channel)
3608 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
3609 p2p->cfg->reg_class,
3610 p2p->cfg->channel);
3611 if (p2p->ext_listen_interval)
3612 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
3613 p2p->ext_listen_interval);
3614
3615 if (bands & BAND_60_GHZ)
3616 p2p_buf_add_device_info(ies, p2p, NULL);
3617
3618 if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3619 p2p_buf_add_service_hash(ies, p2p);
3620
3621 /* TODO: p2p_buf_add_operating_channel() if GO */
3622 p2p_buf_update_ie_hdr(ies, len);
3623 }
3624
3625
p2p_scan_ie_buf_len(struct p2p_data * p2p)3626 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
3627 {
3628 size_t len = 100;
3629
3630 #ifdef CONFIG_WIFI_DISPLAY
3631 if (p2p && p2p->wfd_ie_probe_req)
3632 len += wpabuf_len(p2p->wfd_ie_probe_req);
3633 #endif /* CONFIG_WIFI_DISPLAY */
3634
3635 if (p2p && p2p->vendor_elem &&
3636 p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3637 len += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3638
3639 return len;
3640 }
3641
3642
p2p_ie_text(struct wpabuf * p2p_ie,char * buf,char * end)3643 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
3644 {
3645 return p2p_attr_text(p2p_ie, buf, end);
3646 }
3647
3648
p2p_go_neg_req_cb(struct p2p_data * p2p,int success)3649 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
3650 {
3651 struct p2p_device *dev = p2p->go_neg_peer;
3652 int timeout;
3653
3654 p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
3655
3656 if (dev == NULL) {
3657 p2p_dbg(p2p, "No pending GO Negotiation");
3658 return;
3659 }
3660
3661 if (success) {
3662 if (dev->flags & P2P_DEV_USER_REJECTED) {
3663 p2p_set_state(p2p, P2P_IDLE);
3664 return;
3665 }
3666 } else if (dev->go_neg_req_sent) {
3667 /* Cancel the increment from p2p_connect_send() on failure */
3668 dev->go_neg_req_sent--;
3669 }
3670
3671 if (!success &&
3672 (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
3673 !is_zero_ether_addr(dev->member_in_go_dev)) {
3674 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
3675 MAC2STR(dev->info.p2p_device_addr));
3676 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3677 p2p_send_dev_disc_req(p2p, dev);
3678 return;
3679 }
3680
3681 /*
3682 * Use P2P find, if needed, to find the other device from its listen
3683 * channel.
3684 */
3685 p2p_set_state(p2p, P2P_CONNECT);
3686 timeout = success ? 500000 : 100000;
3687 if (!success && p2p->go_neg_peer &&
3688 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
3689 unsigned int r;
3690 /*
3691 * Peer is expected to wait our response and we will skip the
3692 * listen phase. Add some randomness to the wait time here to
3693 * make it less likely to hit cases where we could end up in
3694 * sync with peer not listening.
3695 */
3696 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
3697 r = 0;
3698 timeout += r % 100000;
3699 }
3700 p2p_set_timeout(p2p, 0, timeout);
3701 }
3702
3703
p2p_go_neg_resp_cb(struct p2p_data * p2p,int success)3704 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
3705 {
3706 p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
3707 success);
3708 if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
3709 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
3710 return;
3711 }
3712 p2p_set_state(p2p, P2P_CONNECT);
3713 p2p_set_timeout(p2p, 0, 500000);
3714 }
3715
3716
p2p_go_neg_resp_failure_cb(struct p2p_data * p2p,int success,const u8 * addr)3717 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
3718 const u8 *addr)
3719 {
3720 p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
3721 if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
3722 p2p_go_neg_failed(p2p, p2p->go_neg_peer->status);
3723 return;
3724 }
3725
3726 if (success) {
3727 struct p2p_device *dev;
3728 dev = p2p_get_device(p2p, addr);
3729 if (dev &&
3730 dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
3731 dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
3732 }
3733
3734 if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND)
3735 p2p_continue_find(p2p);
3736 }
3737
3738
p2p_go_neg_conf_cb(struct p2p_data * p2p,enum p2p_send_action_result result)3739 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
3740 enum p2p_send_action_result result)
3741 {
3742 struct p2p_device *dev;
3743
3744 p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
3745 if (result == P2P_SEND_ACTION_FAILED) {
3746 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3747 p2p_go_neg_failed(p2p, -1);
3748 return;
3749 }
3750
3751 dev = p2p->go_neg_peer;
3752
3753 if (result == P2P_SEND_ACTION_NO_ACK) {
3754 /*
3755 * Retry GO Negotiation Confirmation
3756 * P2P_GO_NEG_CNF_MAX_RETRY_COUNT times if we did not receive
3757 * ACK for confirmation.
3758 */
3759 if (dev && dev->go_neg_conf &&
3760 dev->go_neg_conf_sent <= P2P_GO_NEG_CNF_MAX_RETRY_COUNT) {
3761 p2p_dbg(p2p, "GO Negotiation Confirm retry %d",
3762 dev->go_neg_conf_sent);
3763 p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM;
3764 if (p2p_send_action(p2p, dev->go_neg_conf_freq,
3765 dev->info.p2p_device_addr,
3766 p2p->cfg->dev_addr,
3767 dev->info.p2p_device_addr,
3768 wpabuf_head(dev->go_neg_conf),
3769 wpabuf_len(dev->go_neg_conf), 0) >=
3770 0) {
3771 dev->go_neg_conf_sent++;
3772 return;
3773 }
3774 p2p_dbg(p2p, "Failed to re-send Action frame");
3775
3776 /*
3777 * Continue with the assumption that the first attempt
3778 * went through and just the ACK frame was lost.
3779 */
3780 }
3781
3782 /*
3783 * It looks like the TX status for GO Negotiation Confirm is
3784 * often showing failure even when the peer has actually
3785 * received the frame. Since the peer may change channels
3786 * immediately after having received the frame, we may not see
3787 * an Ack for retries, so just dropping a single frame may
3788 * trigger this. To allow the group formation to succeed if the
3789 * peer did indeed receive the frame, continue regardless of
3790 * the TX status.
3791 */
3792 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
3793 }
3794
3795 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3796
3797 if (dev == NULL)
3798 return;
3799
3800 p2p_go_complete(p2p, dev);
3801 }
3802
3803
p2p_send_action_cb(struct p2p_data * p2p,unsigned int freq,const u8 * dst,const u8 * src,const u8 * bssid,enum p2p_send_action_result result)3804 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3805 const u8 *src, const u8 *bssid,
3806 enum p2p_send_action_result result)
3807 {
3808 enum p2p_pending_action_state state;
3809 int success;
3810
3811 p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
3812 " src=" MACSTR " bssid=" MACSTR " result=%d p2p_state=%s)",
3813 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
3814 MAC2STR(bssid), result, p2p_state_txt(p2p->state));
3815 success = result == P2P_SEND_ACTION_SUCCESS;
3816 state = p2p->pending_action_state;
3817 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3818 switch (state) {
3819 case P2P_NO_PENDING_ACTION:
3820 if (p2p->send_action_in_progress) {
3821 p2p->send_action_in_progress = 0;
3822 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3823 }
3824 break;
3825 case P2P_PENDING_GO_NEG_REQUEST:
3826 p2p_go_neg_req_cb(p2p, success);
3827 break;
3828 case P2P_PENDING_GO_NEG_RESPONSE:
3829 p2p_go_neg_resp_cb(p2p, success);
3830 break;
3831 case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
3832 p2p_go_neg_resp_failure_cb(p2p, success, dst);
3833 break;
3834 case P2P_PENDING_GO_NEG_CONFIRM:
3835 p2p_go_neg_conf_cb(p2p, result);
3836 break;
3837 case P2P_PENDING_SD:
3838 p2p_sd_query_cb(p2p, success);
3839 break;
3840 case P2P_PENDING_PD:
3841 p2p_prov_disc_cb(p2p, success);
3842 break;
3843 case P2P_PENDING_PD_RESPONSE:
3844 p2p_prov_disc_resp_cb(p2p, success);
3845 break;
3846 case P2P_PENDING_INVITATION_REQUEST:
3847 p2p_invitation_req_cb(p2p, success);
3848 break;
3849 case P2P_PENDING_INVITATION_RESPONSE:
3850 p2p_invitation_resp_cb(p2p, success);
3851 break;
3852 case P2P_PENDING_DEV_DISC_REQUEST:
3853 p2p_dev_disc_req_cb(p2p, success);
3854 break;
3855 case P2P_PENDING_DEV_DISC_RESPONSE:
3856 p2p_dev_disc_resp_cb(p2p, success);
3857 break;
3858 case P2P_PENDING_GO_DISC_REQ:
3859 p2p_go_disc_req_cb(p2p, success);
3860 break;
3861 }
3862 }
3863
3864
p2p_listen_cb(struct p2p_data * p2p,unsigned int freq,unsigned int duration)3865 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3866 unsigned int duration)
3867 {
3868 if (freq == p2p->pending_client_disc_freq) {
3869 p2p_dbg(p2p, "Client discoverability remain-awake completed");
3870 p2p->pending_client_disc_freq = 0;
3871 return;
3872 }
3873
3874 if (freq != p2p->pending_listen_freq) {
3875 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
3876 freq, duration, p2p->pending_listen_freq);
3877 return;
3878 }
3879
3880 p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
3881 p2p->pending_listen_sec, p2p->pending_listen_usec,
3882 p2p->pending_listen_freq);
3883 p2p->pending_listen_wait_drv = false;
3884 p2p->in_listen = 1;
3885 p2p->drv_in_listen = freq;
3886 if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3887 /*
3888 * Add 20 msec extra wait to avoid race condition with driver
3889 * remain-on-channel end event, i.e., give driver more time to
3890 * complete the operation before our timeout expires.
3891 */
3892 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3893 p2p->pending_listen_usec + 20000);
3894 }
3895
3896 p2p->pending_listen_freq = 0;
3897 }
3898
3899
p2p_listen_end(struct p2p_data * p2p,unsigned int freq)3900 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3901 {
3902 p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
3903 p2p->drv_in_listen = 0;
3904 if (p2p->in_listen)
3905 return 0; /* Internal timeout will trigger the next step */
3906
3907 if (p2p->state == P2P_WAIT_PEER_CONNECT && p2p->go_neg_peer &&
3908 p2p->pending_listen_freq) {
3909 /*
3910 * Better wait a bit if the driver is unable to start
3911 * offchannel operation for some reason to continue with
3912 * P2P_WAIT_PEER_(IDLE/CONNECT) state transitions.
3913 */
3914 p2p_dbg(p2p,
3915 "Listen operation did not seem to start - delay idle phase to avoid busy loop");
3916 p2p_set_timeout(p2p, 0, 100000);
3917 return 1;
3918 }
3919
3920 if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3921 if (p2p->go_neg_peer->connect_reqs >= 120) {
3922 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3923 p2p_go_neg_failed(p2p, -1);
3924 return 0;
3925 }
3926
3927 p2p_set_state(p2p, P2P_CONNECT);
3928 p2p_connect_send(p2p, p2p->go_neg_peer);
3929 return 1;
3930 } else if (p2p->state == P2P_SEARCH) {
3931 if (p2p->p2p_scan_running) {
3932 /*
3933 * Search is already in progress. This can happen if
3934 * an Action frame RX is reported immediately after
3935 * the end of a remain-on-channel operation and the
3936 * response frame to that is sent using an offchannel
3937 * operation while in p2p_find. Avoid an attempt to
3938 * restart a scan here.
3939 */
3940 p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
3941 return 1;
3942 }
3943 if (p2p->pending_listen_freq) {
3944 /*
3945 * Better wait a bit if the driver is unable to start
3946 * offchannel operation for some reason. p2p_search()
3947 * will be started from internal timeout.
3948 */
3949 p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3950 p2p_set_timeout(p2p, 0, 100000);
3951 return 1;
3952 }
3953 if (p2p->search_delay) {
3954 p2p_dbg(p2p, "Delay search operation by %u ms",
3955 p2p->search_delay);
3956 p2p_set_timeout(p2p, p2p->search_delay / 1000,
3957 (p2p->search_delay % 1000) * 1000);
3958 return 1;
3959 }
3960 p2p_search(p2p);
3961 return 1;
3962 }
3963
3964 return 0;
3965 }
3966
3967
p2p_timeout_connect(struct p2p_data * p2p)3968 static void p2p_timeout_connect(struct p2p_data *p2p)
3969 {
3970 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3971 if (p2p->go_neg_peer &&
3972 (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3973 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
3974 p2p_go_neg_failed(p2p, -1);
3975 return;
3976 }
3977 if (p2p->go_neg_peer &&
3978 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3979 p2p->go_neg_peer->connect_reqs < 120) {
3980 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
3981 p2p_connect_send(p2p, p2p->go_neg_peer);
3982 return;
3983 }
3984 if (p2p->go_neg_peer && p2p->go_neg_peer->oob_go_neg_freq > 0) {
3985 p2p_dbg(p2p, "Skip connect-listen since GO Neg channel known (OOB)");
3986 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3987 p2p_set_timeout(p2p, 0, 30000);
3988 return;
3989 }
3990 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3991 p2p_listen_in_find(p2p, 0);
3992 }
3993
3994
p2p_timeout_connect_listen(struct p2p_data * p2p)3995 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3996 {
3997 if (p2p->go_neg_peer) {
3998 if (p2p->drv_in_listen) {
3999 p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
4000 return;
4001 }
4002
4003 if (p2p->go_neg_peer->connect_reqs >= 120) {
4004 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
4005 p2p_go_neg_failed(p2p, -1);
4006 return;
4007 }
4008
4009 p2p_set_state(p2p, P2P_CONNECT);
4010 p2p_connect_send(p2p, p2p->go_neg_peer);
4011 } else
4012 p2p_set_state(p2p, P2P_IDLE);
4013 }
4014
4015
p2p_timeout_wait_peer_connect(struct p2p_data * p2p)4016 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
4017 {
4018 p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
4019
4020 if (p2p->cfg->is_concurrent_session_active &&
4021 p2p->cfg->is_concurrent_session_active(p2p->cfg->cb_ctx))
4022 p2p_set_timeout(p2p, 0, 500000);
4023 else
4024 p2p_set_timeout(p2p, 0, 200000);
4025 }
4026
4027
p2p_timeout_wait_peer_idle(struct p2p_data * p2p)4028 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
4029 {
4030 struct p2p_device *dev = p2p->go_neg_peer;
4031
4032 if (dev == NULL) {
4033 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
4034 return;
4035 }
4036
4037 p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
4038 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
4039 p2p->pending_listen_wait_drv = false;
4040 if (p2p->pending_listen_freq) {
4041 p2p_dbg(p2p, "Clear pending_listen_freq for %s", __func__);
4042 p2p->pending_listen_freq = 0;
4043 }
4044 p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
4045 p2p_listen_in_find(p2p, 0);
4046 }
4047
4048
p2p_timeout_sd_during_find(struct p2p_data * p2p)4049 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
4050 {
4051 p2p_dbg(p2p, "Service Discovery Query timeout");
4052 if (p2p->sd_peer) {
4053 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
4054 p2p->sd_peer = NULL;
4055 }
4056 p2p_continue_find(p2p);
4057 }
4058
4059
p2p_timeout_prov_disc_during_find(struct p2p_data * p2p)4060 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
4061 {
4062 p2p_dbg(p2p, "Provision Discovery Request timeout");
4063 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
4064 p2p_continue_find(p2p);
4065 }
4066
4067
p2p_timeout_prov_disc_req(struct p2p_data * p2p)4068 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
4069 {
4070 u32 adv_id = 0;
4071 u8 *adv_mac = NULL;
4072
4073 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4074
4075 /*
4076 * For user initiated PD requests that we have not gotten any responses
4077 * for while in IDLE state, we retry them a couple of times before
4078 * giving up.
4079 */
4080 if (!p2p->user_initiated_pd)
4081 return;
4082
4083 p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
4084
4085 if (p2p->pd_retries) {
4086 p2p->pd_retries--;
4087 p2p_retry_pd(p2p);
4088 } else {
4089 struct p2p_device *dev;
4090 int for_join = 0;
4091
4092 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
4093 if (!ether_addr_equal(p2p->pending_pd_devaddr,
4094 dev->info.p2p_device_addr))
4095 continue;
4096 if (dev->req_config_methods &&
4097 (dev->flags & P2P_DEV_PD_FOR_JOIN))
4098 for_join = 1;
4099 }
4100
4101 if (p2p->p2ps_prov) {
4102 adv_id = p2p->p2ps_prov->adv_id;
4103 adv_mac = p2p->p2ps_prov->adv_mac;
4104 }
4105
4106 if (p2p->cfg->prov_disc_fail)
4107 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
4108 p2p->pending_pd_devaddr,
4109 for_join ?
4110 P2P_PROV_DISC_TIMEOUT_JOIN :
4111 P2P_PROV_DISC_TIMEOUT,
4112 adv_id, adv_mac, NULL);
4113 p2p_reset_pending_pd(p2p);
4114 }
4115 }
4116
4117
p2p_timeout_invite(struct p2p_data * p2p)4118 static void p2p_timeout_invite(struct p2p_data *p2p)
4119 {
4120 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
4121 p2p_set_state(p2p, P2P_INVITE_LISTEN);
4122 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
4123 /*
4124 * Better remain on operating channel instead of listen channel
4125 * when running a group.
4126 * Wait 120 ms to let the P2P GO to send its beacon on the
4127 * intended TBTT.
4128 */
4129 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
4130 p2p_set_timeout(p2p, 0, 120000);
4131 return;
4132 }
4133 p2p_listen_in_find(p2p, 0);
4134 }
4135
4136
p2p_timeout_invite_listen(struct p2p_data * p2p)4137 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
4138 {
4139 if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
4140 p2p_set_state(p2p, P2P_INVITE);
4141 p2p_invite_send(p2p, p2p->invite_peer,
4142 p2p->invite_go_dev_addr, p2p->invite_dev_pw_id);
4143 } else {
4144 if (p2p->invite_peer) {
4145 p2p_dbg(p2p, "Invitation Request retry limit reached");
4146 if (p2p->cfg->invitation_result)
4147 p2p->cfg->invitation_result(
4148 p2p->cfg->cb_ctx, -1, NULL, NULL,
4149 p2p->invite_peer->info.p2p_device_addr,
4150 0, 0);
4151 }
4152 p2p_set_state(p2p, P2P_IDLE);
4153 }
4154 }
4155
4156
p2p_state_timeout(void * eloop_ctx,void * timeout_ctx)4157 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
4158 {
4159 struct p2p_data *p2p = eloop_ctx;
4160
4161 p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
4162
4163 p2p->in_listen = 0;
4164 if (p2p->drv_in_listen) {
4165 p2p_dbg(p2p, "Driver is still in listen state - stop it");
4166 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
4167 p2p->pending_listen_wait_drv = false;
4168 }
4169
4170 switch (p2p->state) {
4171 case P2P_IDLE:
4172 /* Check if we timed out waiting for PD req */
4173 if (p2p->pending_action_state == P2P_PENDING_PD)
4174 p2p_timeout_prov_disc_req(p2p);
4175 break;
4176 case P2P_SEARCH:
4177 /* Check if we timed out waiting for PD req */
4178 if (p2p->pending_action_state == P2P_PENDING_PD)
4179 p2p_timeout_prov_disc_req(p2p);
4180 if (p2p->search_delay && !p2p->in_search_delay) {
4181 p2p_dbg(p2p, "Delay search operation by %u ms",
4182 p2p->search_delay);
4183 p2p->in_search_delay = 1;
4184 p2p_set_timeout(p2p, p2p->search_delay / 1000,
4185 (p2p->search_delay % 1000) * 1000);
4186 break;
4187 }
4188 p2p->in_search_delay = 0;
4189 p2p_search(p2p);
4190 break;
4191 case P2P_CONNECT:
4192 p2p_timeout_connect(p2p);
4193 break;
4194 case P2P_CONNECT_LISTEN:
4195 p2p_timeout_connect_listen(p2p);
4196 break;
4197 case P2P_GO_NEG:
4198 break;
4199 case P2P_LISTEN_ONLY:
4200 /* Check if we timed out waiting for PD req */
4201 if (p2p->pending_action_state == P2P_PENDING_PD)
4202 p2p_timeout_prov_disc_req(p2p);
4203
4204 if (p2p->ext_listen_only) {
4205 p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
4206 p2p->ext_listen_only = 0;
4207 p2p_set_state(p2p, P2P_IDLE);
4208 }
4209 break;
4210 case P2P_WAIT_PEER_CONNECT:
4211 p2p_timeout_wait_peer_connect(p2p);
4212 break;
4213 case P2P_WAIT_PEER_IDLE:
4214 p2p_timeout_wait_peer_idle(p2p);
4215 break;
4216 case P2P_SD_DURING_FIND:
4217 p2p_timeout_sd_during_find(p2p);
4218 break;
4219 case P2P_PROVISIONING:
4220 break;
4221 case P2P_PD_DURING_FIND:
4222 p2p_timeout_prov_disc_during_find(p2p);
4223 break;
4224 case P2P_INVITE:
4225 p2p_timeout_invite(p2p);
4226 break;
4227 case P2P_INVITE_LISTEN:
4228 p2p_timeout_invite_listen(p2p);
4229 break;
4230 }
4231 }
4232
4233
p2p_reject(struct p2p_data * p2p,const u8 * peer_addr)4234 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
4235 {
4236 struct p2p_device *dev;
4237
4238 dev = p2p_get_device(p2p, peer_addr);
4239 p2p_dbg(p2p, "Local request to reject connection attempts by peer "
4240 MACSTR, MAC2STR(peer_addr));
4241 if (dev == NULL) {
4242 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
4243 return -1;
4244 }
4245 dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
4246 dev->flags |= P2P_DEV_USER_REJECTED;
4247 return 0;
4248 }
4249
4250
p2p_wps_method_text(enum p2p_wps_method method)4251 const char * p2p_wps_method_text(enum p2p_wps_method method)
4252 {
4253 switch (method) {
4254 case WPS_NOT_READY:
4255 return "not-ready";
4256 case WPS_PIN_DISPLAY:
4257 return "Display";
4258 case WPS_PIN_KEYPAD:
4259 return "Keypad";
4260 case WPS_PBC:
4261 return "PBC";
4262 case WPS_NFC:
4263 return "NFC";
4264 case WPS_P2PS:
4265 return "P2PS";
4266 }
4267
4268 return "??";
4269 }
4270
4271
p2p_go_state_text(enum p2p_go_state go_state)4272 static const char * p2p_go_state_text(enum p2p_go_state go_state)
4273 {
4274 switch (go_state) {
4275 case UNKNOWN_GO:
4276 return "unknown";
4277 case LOCAL_GO:
4278 return "local";
4279 case REMOTE_GO:
4280 return "remote";
4281 }
4282
4283 return "??";
4284 }
4285
4286
p2p_get_peer_info(struct p2p_data * p2p,const u8 * addr,int next)4287 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
4288 const u8 *addr, int next)
4289 {
4290 struct p2p_device *dev;
4291
4292 if (addr)
4293 dev = p2p_get_device(p2p, addr);
4294 else
4295 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4296
4297 if (dev && next) {
4298 dev = dl_list_first(&dev->list, struct p2p_device, list);
4299 if (&dev->list == &p2p->devices)
4300 dev = NULL;
4301 }
4302
4303 if (dev == NULL)
4304 return NULL;
4305
4306 return &dev->info;
4307 }
4308
4309
p2p_get_peer_info_txt(const struct p2p_peer_info * info,char * buf,size_t buflen)4310 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
4311 char *buf, size_t buflen)
4312 {
4313 struct p2p_device *dev;
4314 int res;
4315 char *pos, *end;
4316 struct os_reltime now;
4317
4318 if (info == NULL)
4319 return -1;
4320
4321 dev = (struct p2p_device *) (((u8 *) info) -
4322 offsetof(struct p2p_device, info));
4323
4324 pos = buf;
4325 end = buf + buflen;
4326
4327 os_get_reltime(&now);
4328 res = os_snprintf(pos, end - pos,
4329 "age=%d\n"
4330 "listen_freq=%d\n"
4331 "wps_method=%s\n"
4332 "interface_addr=" MACSTR "\n"
4333 "member_in_go_dev=" MACSTR "\n"
4334 "member_in_go_iface=" MACSTR "\n"
4335 "go_neg_req_sent=%d\n"
4336 "go_state=%s\n"
4337 "dialog_token=%u\n"
4338 "intended_addr=" MACSTR "\n"
4339 "country=%c%c\n"
4340 "oper_freq=%d\n"
4341 "req_config_methods=0x%x\n"
4342 "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
4343 "status=%d\n"
4344 "invitation_reqs=%u\n",
4345 (int) (now.sec - dev->last_seen.sec),
4346 dev->listen_freq,
4347 p2p_wps_method_text(dev->wps_method),
4348 MAC2STR(dev->interface_addr),
4349 MAC2STR(dev->member_in_go_dev),
4350 MAC2STR(dev->member_in_go_iface),
4351 dev->go_neg_req_sent,
4352 p2p_go_state_text(dev->go_state),
4353 dev->dialog_token,
4354 MAC2STR(dev->intended_addr),
4355 dev->country[0] ? dev->country[0] : '_',
4356 dev->country[1] ? dev->country[1] : '_',
4357 dev->oper_freq,
4358 dev->req_config_methods,
4359 dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
4360 "[PROBE_REQ_ONLY]" : "",
4361 dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
4362 dev->flags & P2P_DEV_NOT_YET_READY ?
4363 "[NOT_YET_READY]" : "",
4364 dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
4365 "[PD_PEER_DISPLAY]" : "",
4366 dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
4367 "[PD_PEER_KEYPAD]" : "",
4368 dev->flags & P2P_DEV_PD_PEER_P2PS ?
4369 "[PD_PEER_P2PS]" : "",
4370 dev->flags & P2P_DEV_USER_REJECTED ?
4371 "[USER_REJECTED]" : "",
4372 dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
4373 "[PEER_WAITING_RESPONSE]" : "",
4374 dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
4375 "[PREFER_PERSISTENT_GROUP]" : "",
4376 dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
4377 "[WAIT_GO_NEG_RESPONSE]" : "",
4378 dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
4379 "[WAIT_GO_NEG_CONFIRM]" : "",
4380 dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
4381 "[GROUP_CLIENT_ONLY]" : "",
4382 dev->flags & P2P_DEV_FORCE_FREQ ?
4383 "[FORCE_FREQ]" : "",
4384 dev->flags & P2P_DEV_PD_FOR_JOIN ?
4385 "[PD_FOR_JOIN]" : "",
4386 dev->flags & P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT ?
4387 "[LAST_SEEN_AS_GROUP_CLIENT]" : "",
4388 dev->status,
4389 dev->invitation_reqs);
4390 if (os_snprintf_error(end - pos, res))
4391 return pos - buf;
4392 pos += res;
4393
4394 if (dev->ext_listen_period) {
4395 res = os_snprintf(pos, end - pos,
4396 "ext_listen_period=%u\n"
4397 "ext_listen_interval=%u\n",
4398 dev->ext_listen_period,
4399 dev->ext_listen_interval);
4400 if (os_snprintf_error(end - pos, res))
4401 return pos - buf;
4402 pos += res;
4403 }
4404
4405 if (dev->oper_ssid_len) {
4406 res = os_snprintf(pos, end - pos,
4407 "oper_ssid=%s\n",
4408 wpa_ssid_txt(dev->oper_ssid,
4409 dev->oper_ssid_len));
4410 if (os_snprintf_error(end - pos, res))
4411 return pos - buf;
4412 pos += res;
4413 }
4414
4415 #ifdef CONFIG_WIFI_DISPLAY
4416 if (dev->info.wfd_subelems) {
4417 res = os_snprintf(pos, end - pos, "wfd_subelems=");
4418 if (os_snprintf_error(end - pos, res))
4419 return pos - buf;
4420 pos += res;
4421
4422 pos += wpa_snprintf_hex(pos, end - pos,
4423 wpabuf_head(dev->info.wfd_subelems),
4424 wpabuf_len(dev->info.wfd_subelems));
4425
4426 res = os_snprintf(pos, end - pos, "\n");
4427 if (os_snprintf_error(end - pos, res))
4428 return pos - buf;
4429 pos += res;
4430 }
4431 #endif /* CONFIG_WIFI_DISPLAY */
4432
4433 return pos - buf;
4434 }
4435
4436
p2p_peer_known(struct p2p_data * p2p,const u8 * addr)4437 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
4438 {
4439 return p2p_get_device(p2p, addr) != NULL;
4440 }
4441
4442
p2p_set_client_discoverability(struct p2p_data * p2p,int enabled)4443 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
4444 {
4445 if (enabled) {
4446 p2p_dbg(p2p, "Client discoverability enabled");
4447 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4448 } else {
4449 p2p_dbg(p2p, "Client discoverability disabled");
4450 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4451 }
4452 }
4453
4454
p2p_build_presence_req(u32 duration1,u32 interval1,u32 duration2,u32 interval2)4455 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
4456 u32 duration2, u32 interval2)
4457 {
4458 struct wpabuf *req;
4459 struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
4460 u8 *len;
4461
4462 req = wpabuf_alloc(100);
4463 if (req == NULL)
4464 return NULL;
4465
4466 if (duration1 || interval1) {
4467 os_memset(&desc1, 0, sizeof(desc1));
4468 desc1.count_type = 1;
4469 desc1.duration = duration1;
4470 desc1.interval = interval1;
4471 ptr1 = &desc1;
4472
4473 if (duration2 || interval2) {
4474 os_memset(&desc2, 0, sizeof(desc2));
4475 desc2.count_type = 2;
4476 desc2.duration = duration2;
4477 desc2.interval = interval2;
4478 ptr2 = &desc2;
4479 }
4480 }
4481
4482 p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
4483 len = p2p_buf_add_ie_hdr(req);
4484 p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
4485 p2p_buf_update_ie_hdr(req, len);
4486
4487 return req;
4488 }
4489
4490
p2p_presence_req(struct p2p_data * p2p,const u8 * go_interface_addr,const u8 * own_interface_addr,unsigned int freq,u32 duration1,u32 interval1,u32 duration2,u32 interval2)4491 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
4492 const u8 *own_interface_addr, unsigned int freq,
4493 u32 duration1, u32 interval1, u32 duration2,
4494 u32 interval2)
4495 {
4496 struct wpabuf *req;
4497
4498 p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
4499 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
4500 "dur2=%u int2=%u",
4501 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
4502 freq, duration1, interval1, duration2, interval2);
4503
4504 req = p2p_build_presence_req(duration1, interval1, duration2,
4505 interval2);
4506 if (req == NULL)
4507 return -1;
4508
4509 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4510 if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
4511 go_interface_addr,
4512 wpabuf_head(req), wpabuf_len(req), 200) < 0) {
4513 p2p_dbg(p2p, "Failed to send Action frame");
4514 }
4515 wpabuf_free(req);
4516
4517 return 0;
4518 }
4519
4520
p2p_build_presence_resp(u8 status,const u8 * noa,size_t noa_len,u8 dialog_token)4521 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
4522 size_t noa_len, u8 dialog_token)
4523 {
4524 struct wpabuf *resp;
4525 u8 *len;
4526
4527 resp = wpabuf_alloc(100 + noa_len);
4528 if (resp == NULL)
4529 return NULL;
4530
4531 p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
4532 len = p2p_buf_add_ie_hdr(resp);
4533 p2p_buf_add_status(resp, status);
4534 if (noa) {
4535 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
4536 wpabuf_put_le16(resp, noa_len);
4537 wpabuf_put_data(resp, noa, noa_len);
4538 } else
4539 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
4540 p2p_buf_update_ie_hdr(resp, len);
4541
4542 return resp;
4543 }
4544
4545
p2p_process_presence_req(struct p2p_data * p2p,const u8 * da,const u8 * sa,const u8 * data,size_t len,int rx_freq)4546 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
4547 const u8 *sa, const u8 *data, size_t len,
4548 int rx_freq)
4549 {
4550 struct p2p_message msg;
4551 u8 status;
4552 struct wpabuf *resp;
4553 size_t g;
4554 struct p2p_group *group = NULL;
4555 int parsed = 0;
4556 u8 noa[50];
4557 int noa_len;
4558
4559 p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
4560
4561 for (g = 0; g < p2p->num_groups; g++) {
4562 if (ether_addr_equal(
4563 da, p2p_group_get_interface_addr(p2p->groups[g]))) {
4564 group = p2p->groups[g];
4565 break;
4566 }
4567 }
4568 if (group == NULL) {
4569 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
4570 MACSTR, MAC2STR(da));
4571 return;
4572 }
4573
4574 if (p2p_parse(data, len, &msg) < 0) {
4575 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
4576 status = P2P_SC_FAIL_INVALID_PARAMS;
4577 goto fail;
4578 }
4579 parsed = 1;
4580
4581 if (msg.noa == NULL) {
4582 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
4583 status = P2P_SC_FAIL_INVALID_PARAMS;
4584 goto fail;
4585 }
4586
4587 status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
4588
4589 fail:
4590 if (p2p->cfg->get_noa)
4591 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
4592 sizeof(noa));
4593 else
4594 noa_len = -1;
4595 resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
4596 noa_len > 0 ? noa_len : 0,
4597 msg.dialog_token);
4598 if (parsed)
4599 p2p_parse_free(&msg);
4600 if (resp == NULL)
4601 return;
4602
4603 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4604 if (p2p_send_action(p2p, rx_freq, sa, da, da,
4605 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
4606 p2p_dbg(p2p, "Failed to send Action frame");
4607 }
4608 wpabuf_free(resp);
4609 }
4610
4611
p2p_process_presence_resp(struct p2p_data * p2p,const u8 * da,const u8 * sa,const u8 * data,size_t len)4612 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
4613 const u8 *sa, const u8 *data, size_t len)
4614 {
4615 struct p2p_message msg;
4616
4617 p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
4618
4619 if (p2p_parse(data, len, &msg) < 0) {
4620 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
4621 return;
4622 }
4623
4624 if (msg.status == NULL || msg.noa == NULL) {
4625 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
4626 p2p_parse_free(&msg);
4627 return;
4628 }
4629
4630 if (p2p->cfg->presence_resp) {
4631 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status,
4632 msg.noa, msg.noa_len);
4633 }
4634
4635 if (*msg.status) {
4636 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
4637 *msg.status);
4638 p2p_parse_free(&msg);
4639 return;
4640 }
4641
4642 p2p_dbg(p2p, "P2P Presence Request was accepted");
4643 wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
4644 msg.noa, msg.noa_len);
4645 /* TODO: process NoA */
4646 p2p_parse_free(&msg);
4647 }
4648
4649
p2p_ext_listen_timeout(void * eloop_ctx,void * timeout_ctx)4650 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
4651 {
4652 struct p2p_data *p2p = eloop_ctx;
4653
4654 if (p2p->ext_listen_interval) {
4655 /* Schedule next extended listen timeout */
4656 eloop_register_timeout(p2p->ext_listen_interval_sec,
4657 p2p->ext_listen_interval_usec,
4658 p2p_ext_listen_timeout, p2p, NULL);
4659 }
4660
4661 if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
4662 /*
4663 * This should not really happen, but it looks like the Listen
4664 * command may fail is something else (e.g., a scan) was
4665 * running at an inconvenient time. As a workaround, allow new
4666 * Extended Listen operation to be started.
4667 */
4668 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
4669 p2p->ext_listen_only = 0;
4670 p2p_set_state(p2p, P2P_IDLE);
4671 }
4672
4673 if ((p2p->cfg->is_p2p_in_progress &&
4674 p2p->cfg->is_p2p_in_progress(p2p->cfg->cb_ctx)) ||
4675 (p2p->pending_action_state == P2P_PENDING_PD &&
4676 p2p->pd_retries > 0)) {
4677 p2p_dbg(p2p, "Operation in progress - skip Extended Listen timeout (%s)",
4678 p2p_state_txt(p2p->state));
4679 return;
4680 }
4681
4682 if (p2p->state != P2P_IDLE) {
4683 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
4684 return;
4685 }
4686
4687 p2p_dbg(p2p, "Extended Listen timeout");
4688 p2p->ext_listen_only = 1;
4689 if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
4690 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
4691 p2p->ext_listen_only = 0;
4692 }
4693 }
4694
4695
p2p_ext_listen(struct p2p_data * p2p,unsigned int period,unsigned int interval)4696 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
4697 unsigned int interval)
4698 {
4699 if (period > 65535 || interval > 65535 || period > interval ||
4700 (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
4701 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
4702 period, interval);
4703 return -1;
4704 }
4705
4706 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
4707
4708 if (interval == 0) {
4709 p2p_dbg(p2p, "Disabling Extended Listen Timing");
4710 p2p->ext_listen_period = 0;
4711 p2p->ext_listen_interval = 0;
4712 return 0;
4713 }
4714
4715 p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
4716 period, interval);
4717 p2p->ext_listen_period = period;
4718 p2p->ext_listen_interval = interval;
4719 p2p->ext_listen_interval_sec = interval / 1000;
4720 p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
4721
4722 eloop_register_timeout(p2p->ext_listen_interval_sec,
4723 p2p->ext_listen_interval_usec,
4724 p2p_ext_listen_timeout, p2p, NULL);
4725
4726 return 0;
4727 }
4728
4729
p2p_deauth_notif(struct p2p_data * p2p,const u8 * bssid,u16 reason_code,const u8 * ie,size_t ie_len)4730 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4731 const u8 *ie, size_t ie_len)
4732 {
4733 struct p2p_message msg;
4734
4735 if (bssid == NULL || ie == NULL)
4736 return;
4737
4738 os_memset(&msg, 0, sizeof(msg));
4739 if (p2p_parse_ies(ie, ie_len, &msg))
4740 return;
4741 if (msg.minor_reason_code == NULL) {
4742 p2p_parse_free(&msg);
4743 return;
4744 }
4745
4746 p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
4747 " reason_code=%u minor_reason_code=%u",
4748 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4749
4750 p2p_parse_free(&msg);
4751 }
4752
4753
p2p_disassoc_notif(struct p2p_data * p2p,const u8 * bssid,u16 reason_code,const u8 * ie,size_t ie_len)4754 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4755 const u8 *ie, size_t ie_len)
4756 {
4757 struct p2p_message msg;
4758
4759 if (bssid == NULL || ie == NULL)
4760 return;
4761
4762 os_memset(&msg, 0, sizeof(msg));
4763 if (p2p_parse_ies(ie, ie_len, &msg))
4764 return;
4765 if (msg.minor_reason_code == NULL) {
4766 p2p_parse_free(&msg);
4767 return;
4768 }
4769
4770 p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
4771 " reason_code=%u minor_reason_code=%u",
4772 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4773
4774 p2p_parse_free(&msg);
4775 }
4776
4777
p2p_set_managed_oper(struct p2p_data * p2p,int enabled)4778 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
4779 {
4780 if (enabled) {
4781 p2p_dbg(p2p, "Managed P2P Device operations enabled");
4782 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
4783 } else {
4784 p2p_dbg(p2p, "Managed P2P Device operations disabled");
4785 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
4786 }
4787 }
4788
4789
p2p_config_get_random_social(struct p2p_config * p2p,u8 * op_class,u8 * op_channel,struct wpa_freq_range_list * avoid_list,struct wpa_freq_range_list * disallow_list)4790 int p2p_config_get_random_social(struct p2p_config *p2p, u8 *op_class,
4791 u8 *op_channel,
4792 struct wpa_freq_range_list *avoid_list,
4793 struct wpa_freq_range_list *disallow_list)
4794 {
4795 return p2p_channel_random_social(&p2p->channels, op_class, op_channel,
4796 avoid_list, disallow_list);
4797 }
4798
4799
p2p_set_listen_channel(struct p2p_data * p2p,u8 reg_class,u8 channel,u8 forced)4800 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel,
4801 u8 forced)
4802 {
4803 if (p2p_channel_to_freq(reg_class, channel) < 0)
4804 return -1;
4805
4806 /*
4807 * Listen channel was set in configuration or set by control interface;
4808 * cannot override it.
4809 */
4810 if (p2p->cfg->channel_forced && forced == 0) {
4811 p2p_dbg(p2p,
4812 "Listen channel was previously configured - do not override based on optimization");
4813 return -1;
4814 }
4815
4816 p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
4817 reg_class, channel);
4818
4819 if (p2p->state == P2P_IDLE) {
4820 p2p->cfg->reg_class = reg_class;
4821 p2p->cfg->channel = channel;
4822 p2p->cfg->channel_forced = forced;
4823 } else {
4824 p2p_dbg(p2p, "Defer setting listen channel");
4825 p2p->pending_reg_class = reg_class;
4826 p2p->pending_channel = channel;
4827 p2p->pending_channel_forced = forced;
4828 }
4829
4830 return 0;
4831 }
4832
4833
p2p_get_listen_channel(struct p2p_data * p2p)4834 u8 p2p_get_listen_channel(struct p2p_data *p2p)
4835 {
4836 return p2p->cfg->channel;
4837 }
4838
4839
p2p_set_ssid_postfix(struct p2p_data * p2p,const u8 * postfix,size_t len)4840 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
4841 {
4842 p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
4843 if (postfix == NULL) {
4844 p2p->cfg->ssid_postfix_len = 0;
4845 return 0;
4846 }
4847 if (len > sizeof(p2p->cfg->ssid_postfix))
4848 return -1;
4849 os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
4850 p2p->cfg->ssid_postfix_len = len;
4851 return 0;
4852 }
4853
4854
p2p_set_oper_channel(struct p2p_data * p2p,u8 op_reg_class,u8 op_channel,int cfg_op_channel)4855 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
4856 int cfg_op_channel)
4857 {
4858 if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
4859 return -1;
4860
4861 p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
4862 op_reg_class, op_channel);
4863 p2p->cfg->op_reg_class = op_reg_class;
4864 p2p->cfg->op_channel = op_channel;
4865 p2p->cfg->cfg_op_channel = cfg_op_channel;
4866 return 0;
4867 }
4868
4869
p2p_set_pref_chan(struct p2p_data * p2p,unsigned int num_pref_chan,const struct p2p_channel * pref_chan)4870 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
4871 const struct p2p_channel *pref_chan)
4872 {
4873 struct p2p_channel *n;
4874
4875 if (pref_chan) {
4876 n = os_memdup(pref_chan,
4877 num_pref_chan * sizeof(struct p2p_channel));
4878 if (n == NULL)
4879 return -1;
4880 } else
4881 n = NULL;
4882
4883 os_free(p2p->cfg->pref_chan);
4884 p2p->cfg->pref_chan = n;
4885 p2p->cfg->num_pref_chan = num_pref_chan;
4886
4887 return 0;
4888 }
4889
4890
p2p_set_no_go_freq(struct p2p_data * p2p,const struct wpa_freq_range_list * list)4891 int p2p_set_no_go_freq(struct p2p_data *p2p,
4892 const struct wpa_freq_range_list *list)
4893 {
4894 struct wpa_freq_range *tmp;
4895
4896 if (list == NULL || list->num == 0) {
4897 os_free(p2p->no_go_freq.range);
4898 p2p->no_go_freq.range = NULL;
4899 p2p->no_go_freq.num = 0;
4900 return 0;
4901 }
4902
4903 tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
4904 if (tmp == NULL)
4905 return -1;
4906 os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
4907 os_free(p2p->no_go_freq.range);
4908 p2p->no_go_freq.range = tmp;
4909 p2p->no_go_freq.num = list->num;
4910 p2p_dbg(p2p, "Updated no GO chan list");
4911
4912 return 0;
4913 }
4914
4915
p2p_get_interface_addr(struct p2p_data * p2p,const u8 * dev_addr,u8 * iface_addr)4916 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4917 u8 *iface_addr)
4918 {
4919 struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4920 if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4921 return -1;
4922 os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4923 return 0;
4924 }
4925
4926
p2p_get_dev_addr(struct p2p_data * p2p,const u8 * iface_addr,u8 * dev_addr)4927 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4928 u8 *dev_addr)
4929 {
4930 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4931 if (dev == NULL)
4932 return -1;
4933 os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4934 return 0;
4935 }
4936
4937
p2p_set_peer_filter(struct p2p_data * p2p,const u8 * addr)4938 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4939 {
4940 os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4941 if (is_zero_ether_addr(p2p->peer_filter))
4942 p2p_dbg(p2p, "Disable peer filter");
4943 else
4944 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4945 MAC2STR(p2p->peer_filter));
4946 }
4947
4948
p2p_set_cross_connect(struct p2p_data * p2p,int enabled)4949 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4950 {
4951 p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
4952 if (p2p->cross_connect == enabled)
4953 return;
4954 p2p->cross_connect = enabled;
4955 /* TODO: may need to tear down any action group where we are GO(?) */
4956 }
4957
4958
p2p_get_oper_freq(struct p2p_data * p2p,const u8 * iface_addr)4959 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4960 {
4961 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4962 if (dev == NULL)
4963 return -1;
4964 if (dev->oper_freq <= 0)
4965 return -1;
4966 return dev->oper_freq;
4967 }
4968
4969
p2p_set_intra_bss_dist(struct p2p_data * p2p,int enabled)4970 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4971 {
4972 p2p_dbg(p2p, "Intra BSS distribution %s",
4973 enabled ? "enabled" : "disabled");
4974 p2p->cfg->p2p_intra_bss = enabled;
4975 }
4976
4977
p2p_update_channel_list(struct p2p_data * p2p,const struct p2p_channels * chan,const struct p2p_channels * cli_chan)4978 void p2p_update_channel_list(struct p2p_data *p2p,
4979 const struct p2p_channels *chan,
4980 const struct p2p_channels *cli_chan)
4981 {
4982 p2p_dbg(p2p, "Update channel list");
4983 os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4984 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4985 os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4986 sizeof(struct p2p_channels));
4987 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
4988 }
4989
4990
p2p_send_action(struct p2p_data * p2p,unsigned int freq,const u8 * dst,const u8 * src,const u8 * bssid,const u8 * buf,size_t len,unsigned int wait_time)4991 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4992 const u8 *src, const u8 *bssid, const u8 *buf,
4993 size_t len, unsigned int wait_time)
4994 {
4995 int res, scheduled;
4996
4997 res = p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4998 buf, len, wait_time, &scheduled);
4999 if (res == 0 && scheduled && p2p->in_listen && freq > 0 &&
5000 p2p->drv_in_listen > 0 &&
5001 (unsigned int) p2p->drv_in_listen != freq) {
5002 p2p_dbg(p2p,
5003 "Stop listen on %d MHz to allow a frame to be sent immediately on %d MHz",
5004 p2p->drv_in_listen, freq);
5005 p2p_stop_listen_for_freq(p2p, freq);
5006 }
5007 return res;
5008 }
5009
5010
p2p_set_best_channels(struct p2p_data * p2p,int freq_24,int freq_5,int freq_overall)5011 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
5012 int freq_overall)
5013 {
5014 p2p_dbg(p2p, "Best channel: 2.4 GHz: %d, 5 GHz: %d, overall: %d",
5015 freq_24, freq_5, freq_overall);
5016 p2p->best_freq_24 = freq_24;
5017 p2p->best_freq_5 = freq_5;
5018 p2p->best_freq_overall = freq_overall;
5019 }
5020
5021
p2p_set_own_freq_preference(struct p2p_data * p2p,int freq)5022 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
5023 {
5024 p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
5025 p2p->own_freq_preference = freq;
5026 }
5027
5028
p2p_get_go_neg_peer(struct p2p_data * p2p)5029 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
5030 {
5031 if (p2p == NULL || p2p->go_neg_peer == NULL)
5032 return NULL;
5033 return p2p->go_neg_peer->info.p2p_device_addr;
5034 }
5035
5036
5037 const struct p2p_peer_info *
p2p_get_peer_found(struct p2p_data * p2p,const u8 * addr,int next)5038 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
5039 {
5040 struct p2p_device *dev;
5041
5042 if (addr) {
5043 dev = p2p_get_device(p2p, addr);
5044 if (!dev)
5045 return NULL;
5046
5047 if (!next) {
5048 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
5049 return NULL;
5050
5051 return &dev->info;
5052 } else {
5053 do {
5054 dev = dl_list_first(&dev->list,
5055 struct p2p_device,
5056 list);
5057 if (!dev || &dev->list == &p2p->devices)
5058 return NULL;
5059 } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
5060 }
5061 } else {
5062 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
5063 if (!dev)
5064 return NULL;
5065 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
5066 dev = dl_list_first(&dev->list,
5067 struct p2p_device,
5068 list);
5069 if (!dev || &dev->list == &p2p->devices)
5070 return NULL;
5071 }
5072 }
5073
5074 return &dev->info;
5075 }
5076
5077
p2p_in_progress(struct p2p_data * p2p)5078 int p2p_in_progress(struct p2p_data *p2p)
5079 {
5080 if (p2p == NULL)
5081 return 0;
5082 if (p2p->state == P2P_SEARCH)
5083 return 2;
5084 return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
5085 }
5086
5087
p2p_set_config_timeout(struct p2p_data * p2p,u8 go_timeout,u8 client_timeout)5088 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
5089 u8 client_timeout)
5090 {
5091 if (p2p) {
5092 p2p->go_timeout = go_timeout;
5093 p2p->client_timeout = client_timeout;
5094 }
5095 }
5096
5097
5098 #ifdef CONFIG_WIFI_DISPLAY
5099
p2p_update_wfd_ie_groups(struct p2p_data * p2p)5100 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
5101 {
5102 size_t g;
5103 struct p2p_group *group;
5104
5105 for (g = 0; g < p2p->num_groups; g++) {
5106 group = p2p->groups[g];
5107 p2p_group_force_beacon_update_ies(group);
5108 }
5109 }
5110
5111
p2p_set_wfd_ie_beacon(struct p2p_data * p2p,struct wpabuf * ie)5112 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
5113 {
5114 wpabuf_free(p2p->wfd_ie_beacon);
5115 p2p->wfd_ie_beacon = ie;
5116 p2p_update_wfd_ie_groups(p2p);
5117 return 0;
5118 }
5119
5120
p2p_set_wfd_ie_probe_req(struct p2p_data * p2p,struct wpabuf * ie)5121 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
5122 {
5123 wpabuf_free(p2p->wfd_ie_probe_req);
5124 p2p->wfd_ie_probe_req = ie;
5125 return 0;
5126 }
5127
5128
p2p_set_wfd_ie_probe_resp(struct p2p_data * p2p,struct wpabuf * ie)5129 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
5130 {
5131 wpabuf_free(p2p->wfd_ie_probe_resp);
5132 p2p->wfd_ie_probe_resp = ie;
5133 p2p_update_wfd_ie_groups(p2p);
5134 return 0;
5135 }
5136
5137
p2p_set_wfd_ie_assoc_req(struct p2p_data * p2p,struct wpabuf * ie)5138 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
5139 {
5140 wpabuf_free(p2p->wfd_ie_assoc_req);
5141 p2p->wfd_ie_assoc_req = ie;
5142 return 0;
5143 }
5144
5145
p2p_set_wfd_ie_invitation(struct p2p_data * p2p,struct wpabuf * ie)5146 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
5147 {
5148 wpabuf_free(p2p->wfd_ie_invitation);
5149 p2p->wfd_ie_invitation = ie;
5150 return 0;
5151 }
5152
5153
p2p_set_wfd_ie_prov_disc_req(struct p2p_data * p2p,struct wpabuf * ie)5154 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
5155 {
5156 wpabuf_free(p2p->wfd_ie_prov_disc_req);
5157 p2p->wfd_ie_prov_disc_req = ie;
5158 return 0;
5159 }
5160
5161
p2p_set_wfd_ie_prov_disc_resp(struct p2p_data * p2p,struct wpabuf * ie)5162 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
5163 {
5164 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
5165 p2p->wfd_ie_prov_disc_resp = ie;
5166 return 0;
5167 }
5168
5169
p2p_set_wfd_ie_go_neg(struct p2p_data * p2p,struct wpabuf * ie)5170 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
5171 {
5172 wpabuf_free(p2p->wfd_ie_go_neg);
5173 p2p->wfd_ie_go_neg = ie;
5174 return 0;
5175 }
5176
5177
p2p_set_wfd_dev_info(struct p2p_data * p2p,const struct wpabuf * elem)5178 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
5179 {
5180 wpabuf_free(p2p->wfd_dev_info);
5181 if (elem) {
5182 p2p->wfd_dev_info = wpabuf_dup(elem);
5183 if (p2p->wfd_dev_info == NULL)
5184 return -1;
5185 } else
5186 p2p->wfd_dev_info = NULL;
5187
5188 return 0;
5189 }
5190
5191
p2p_set_wfd_r2_dev_info(struct p2p_data * p2p,const struct wpabuf * elem)5192 int p2p_set_wfd_r2_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
5193 {
5194 wpabuf_free(p2p->wfd_r2_dev_info);
5195 if (elem) {
5196 p2p->wfd_r2_dev_info = wpabuf_dup(elem);
5197 if (p2p->wfd_r2_dev_info == NULL)
5198 return -1;
5199 } else
5200 p2p->wfd_r2_dev_info = NULL;
5201
5202 return 0;
5203 }
5204
5205
p2p_set_wfd_assoc_bssid(struct p2p_data * p2p,const struct wpabuf * elem)5206 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
5207 {
5208 wpabuf_free(p2p->wfd_assoc_bssid);
5209 if (elem) {
5210 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
5211 if (p2p->wfd_assoc_bssid == NULL)
5212 return -1;
5213 } else
5214 p2p->wfd_assoc_bssid = NULL;
5215
5216 return 0;
5217 }
5218
5219
p2p_set_wfd_coupled_sink_info(struct p2p_data * p2p,const struct wpabuf * elem)5220 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
5221 const struct wpabuf *elem)
5222 {
5223 wpabuf_free(p2p->wfd_coupled_sink_info);
5224 if (elem) {
5225 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
5226 if (p2p->wfd_coupled_sink_info == NULL)
5227 return -1;
5228 } else
5229 p2p->wfd_coupled_sink_info = NULL;
5230
5231 return 0;
5232 }
5233
5234 #endif /* CONFIG_WIFI_DISPLAY */
5235
5236
p2p_set_disc_int(struct p2p_data * p2p,int min_disc_int,int max_disc_int,int max_disc_tu)5237 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
5238 int max_disc_tu)
5239 {
5240 if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
5241 return -1;
5242
5243 p2p->min_disc_int = min_disc_int;
5244 p2p->max_disc_int = max_disc_int;
5245 p2p->max_disc_tu = max_disc_tu;
5246 p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
5247 min_disc_int, max_disc_int, max_disc_tu);
5248
5249 return 0;
5250 }
5251
5252
p2p_dbg(struct p2p_data * p2p,const char * fmt,...)5253 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
5254 {
5255 va_list ap;
5256 char buf[500];
5257
5258 if (!p2p->cfg->debug_print)
5259 return;
5260
5261 va_start(ap, fmt);
5262 vsnprintf(buf, sizeof(buf), fmt, ap);
5263 buf[sizeof(buf) - 1] = '\0';
5264 va_end(ap);
5265 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
5266 }
5267
5268
p2p_info(struct p2p_data * p2p,const char * fmt,...)5269 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
5270 {
5271 va_list ap;
5272 char buf[500];
5273
5274 if (!p2p->cfg->debug_print)
5275 return;
5276
5277 va_start(ap, fmt);
5278 vsnprintf(buf, sizeof(buf), fmt, ap);
5279 buf[sizeof(buf) - 1] = '\0';
5280 va_end(ap);
5281 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
5282 }
5283
5284
p2p_err(struct p2p_data * p2p,const char * fmt,...)5285 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
5286 {
5287 va_list ap;
5288 char buf[500];
5289
5290 if (!p2p->cfg->debug_print)
5291 return;
5292
5293 va_start(ap, fmt);
5294 vsnprintf(buf, sizeof(buf), fmt, ap);
5295 buf[sizeof(buf) - 1] = '\0';
5296 va_end(ap);
5297 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
5298 }
5299
5300
p2p_loop_on_known_peers(struct p2p_data * p2p,void (* peer_callback)(struct p2p_peer_info * peer,void * user_data),void * user_data)5301 void p2p_loop_on_known_peers(struct p2p_data *p2p,
5302 void (*peer_callback)(struct p2p_peer_info *peer,
5303 void *user_data),
5304 void *user_data)
5305 {
5306 struct p2p_device *dev, *n;
5307
5308 dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
5309 peer_callback(&dev->info, user_data);
5310 }
5311 }
5312
5313
5314 #ifdef CONFIG_WPS_NFC
5315
p2p_build_nfc_handover(struct p2p_data * p2p,int client_freq,const u8 * go_dev_addr,const u8 * ssid,size_t ssid_len)5316 static struct wpabuf * p2p_build_nfc_handover(struct p2p_data *p2p,
5317 int client_freq,
5318 const u8 *go_dev_addr,
5319 const u8 *ssid, size_t ssid_len)
5320 {
5321 struct wpabuf *buf;
5322 u8 op_class, channel;
5323 enum p2p_role_indication role = P2P_DEVICE_NOT_IN_GROUP;
5324
5325 buf = wpabuf_alloc(1000);
5326 if (buf == NULL)
5327 return NULL;
5328
5329 op_class = p2p->cfg->reg_class;
5330 channel = p2p->cfg->channel;
5331
5332 p2p_buf_add_capability(buf, p2p->dev_capab &
5333 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
5334 p2p_buf_add_device_info(buf, p2p, NULL);
5335
5336 if (p2p->num_groups > 0) {
5337 int freq = p2p_group_get_freq(p2p->groups[0]);
5338 role = P2P_GO_IN_A_GROUP;
5339 if (p2p_freq_to_channel(freq, &op_class, &channel) < 0) {
5340 p2p_dbg(p2p,
5341 "Unknown GO operating frequency %d MHz for NFC handover",
5342 freq);
5343 wpabuf_free(buf);
5344 return NULL;
5345 }
5346 } else if (client_freq > 0) {
5347 role = P2P_CLIENT_IN_A_GROUP;
5348 if (p2p_freq_to_channel(client_freq, &op_class, &channel) < 0) {
5349 p2p_dbg(p2p,
5350 "Unknown client operating frequency %d MHz for NFC handover",
5351 client_freq);
5352 wpabuf_free(buf);
5353 return NULL;
5354 }
5355 }
5356
5357 p2p_buf_add_oob_go_neg_channel(buf, p2p->cfg->country, op_class,
5358 channel, role);
5359
5360 if (p2p->num_groups > 0) {
5361 /* Limit number of clients to avoid very long message */
5362 p2p_buf_add_group_info(p2p->groups[0], buf, 5);
5363 p2p_group_buf_add_id(p2p->groups[0], buf);
5364 } else if (client_freq > 0 &&
5365 go_dev_addr && !is_zero_ether_addr(go_dev_addr) &&
5366 ssid && ssid_len > 0) {
5367 /*
5368 * Add the optional P2P Group ID to indicate in which group this
5369 * device is a P2P Client.
5370 */
5371 p2p_buf_add_group_id(buf, go_dev_addr, ssid, ssid_len);
5372 }
5373
5374 return buf;
5375 }
5376
5377
p2p_build_nfc_handover_req(struct p2p_data * p2p,int client_freq,const u8 * go_dev_addr,const u8 * ssid,size_t ssid_len)5378 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
5379 int client_freq,
5380 const u8 *go_dev_addr,
5381 const u8 *ssid, size_t ssid_len)
5382 {
5383 return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5384 ssid_len);
5385 }
5386
5387
p2p_build_nfc_handover_sel(struct p2p_data * p2p,int client_freq,const u8 * go_dev_addr,const u8 * ssid,size_t ssid_len)5388 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
5389 int client_freq,
5390 const u8 *go_dev_addr,
5391 const u8 *ssid, size_t ssid_len)
5392 {
5393 return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5394 ssid_len);
5395 }
5396
5397
p2p_process_nfc_connection_handover(struct p2p_data * p2p,struct p2p_nfc_params * params)5398 int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
5399 struct p2p_nfc_params *params)
5400 {
5401 struct p2p_message msg;
5402 struct p2p_device *dev;
5403 const u8 *p2p_dev_addr;
5404 int freq;
5405 enum p2p_role_indication role;
5406
5407 params->next_step = NO_ACTION;
5408
5409 if (p2p_parse_ies_separate(params->wsc_attr, params->wsc_len,
5410 params->p2p_attr, params->p2p_len, &msg)) {
5411 p2p_dbg(p2p, "Failed to parse WSC/P2P attributes from NFC");
5412 p2p_parse_free(&msg);
5413 return -1;
5414 }
5415
5416 if (msg.p2p_device_addr)
5417 p2p_dev_addr = msg.p2p_device_addr;
5418 else if (msg.device_id)
5419 p2p_dev_addr = msg.device_id;
5420 else {
5421 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
5422 p2p_parse_free(&msg);
5423 return -1;
5424 }
5425
5426 if (msg.oob_dev_password) {
5427 os_memcpy(params->oob_dev_pw, msg.oob_dev_password,
5428 msg.oob_dev_password_len);
5429 params->oob_dev_pw_len = msg.oob_dev_password_len;
5430 }
5431
5432 dev = p2p_create_device(p2p, p2p_dev_addr);
5433 if (dev == NULL) {
5434 p2p_parse_free(&msg);
5435 return -1;
5436 }
5437
5438 params->peer = &dev->info;
5439
5440 os_get_reltime(&dev->last_seen);
5441 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
5442 p2p_copy_wps_info(p2p, dev, 0, &msg);
5443
5444 if (!msg.oob_go_neg_channel) {
5445 p2p_dbg(p2p, "OOB GO Negotiation Channel attribute not included");
5446 p2p_parse_free(&msg);
5447 return -1;
5448 }
5449
5450 if (msg.oob_go_neg_channel[3] == 0 &&
5451 msg.oob_go_neg_channel[4] == 0)
5452 freq = 0;
5453 else
5454 freq = p2p_channel_to_freq(msg.oob_go_neg_channel[3],
5455 msg.oob_go_neg_channel[4]);
5456 if (freq < 0) {
5457 p2p_dbg(p2p, "Unknown peer OOB GO Neg channel");
5458 p2p_parse_free(&msg);
5459 return -1;
5460 }
5461 role = msg.oob_go_neg_channel[5];
5462
5463 if (role == P2P_GO_IN_A_GROUP) {
5464 p2p_dbg(p2p, "Peer OOB GO operating channel: %u MHz", freq);
5465 params->go_freq = freq;
5466 } else if (role == P2P_CLIENT_IN_A_GROUP) {
5467 p2p_dbg(p2p, "Peer (client) OOB GO operating channel: %u MHz",
5468 freq);
5469 params->go_freq = freq;
5470 } else
5471 p2p_dbg(p2p, "Peer OOB GO Neg channel: %u MHz", freq);
5472 dev->oob_go_neg_freq = freq;
5473
5474 if (!params->sel && role != P2P_GO_IN_A_GROUP) {
5475 freq = p2p_channel_to_freq(p2p->cfg->reg_class,
5476 p2p->cfg->channel);
5477 if (freq < 0) {
5478 p2p_dbg(p2p, "Own listen channel not known");
5479 p2p_parse_free(&msg);
5480 return -1;
5481 }
5482 p2p_dbg(p2p, "Use own Listen channel as OOB GO Neg channel: %u MHz", freq);
5483 dev->oob_go_neg_freq = freq;
5484 }
5485
5486 if (msg.group_id) {
5487 os_memcpy(params->go_dev_addr, msg.group_id, ETH_ALEN);
5488 params->go_ssid_len = msg.group_id_len - ETH_ALEN;
5489 os_memcpy(params->go_ssid, msg.group_id + ETH_ALEN,
5490 params->go_ssid_len);
5491 }
5492
5493 if (dev->flags & P2P_DEV_USER_REJECTED) {
5494 p2p_dbg(p2p, "Do not report rejected device");
5495 p2p_parse_free(&msg);
5496 return 0;
5497 }
5498
5499 if (!(dev->flags & P2P_DEV_REPORTED)) {
5500 p2p->cfg->dev_found(p2p->cfg->cb_ctx, p2p_dev_addr, &dev->info,
5501 !(dev->flags & P2P_DEV_REPORTED_ONCE));
5502 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
5503 }
5504 p2p_parse_free(&msg);
5505
5506 if (role == P2P_GO_IN_A_GROUP && p2p->num_groups > 0)
5507 params->next_step = BOTH_GO;
5508 else if (role == P2P_GO_IN_A_GROUP)
5509 params->next_step = JOIN_GROUP;
5510 else if (role == P2P_CLIENT_IN_A_GROUP) {
5511 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
5512 params->next_step = PEER_CLIENT;
5513 } else if (p2p->num_groups > 0)
5514 params->next_step = AUTH_JOIN;
5515 else if (params->sel)
5516 params->next_step = INIT_GO_NEG;
5517 else
5518 params->next_step = RESP_GO_NEG;
5519
5520 return 0;
5521 }
5522
5523
p2p_set_authorized_oob_dev_pw_id(struct p2p_data * p2p,u16 dev_pw_id,int go_intent,const u8 * own_interface_addr)5524 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
5525 int go_intent,
5526 const u8 *own_interface_addr)
5527 {
5528
5529 p2p->authorized_oob_dev_pw_id = dev_pw_id;
5530 if (dev_pw_id == 0) {
5531 p2p_dbg(p2p, "NFC OOB Password unauthorized for static handover");
5532 return;
5533 }
5534
5535 p2p_dbg(p2p, "NFC OOB Password (id=%u) authorized for static handover",
5536 dev_pw_id);
5537
5538 p2p->go_intent = go_intent;
5539 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
5540 }
5541
5542 #endif /* CONFIG_WPS_NFC */
5543
5544
p2p_set_passphrase_len(struct p2p_data * p2p,unsigned int len)5545 int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len)
5546 {
5547 if (len < 8 || len > 63)
5548 return -1;
5549 p2p->cfg->passphrase_len = len;
5550 return 0;
5551 }
5552
5553
p2p_set_vendor_elems(struct p2p_data * p2p,struct wpabuf ** vendor_elem)5554 void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem)
5555 {
5556 p2p->vendor_elem = vendor_elem;
5557 }
5558
5559
p2p_go_neg_wait_timeout(void * eloop_ctx,void * timeout_ctx)5560 void p2p_go_neg_wait_timeout(void *eloop_ctx, void *timeout_ctx)
5561 {
5562 struct p2p_data *p2p = eloop_ctx;
5563
5564 p2p_dbg(p2p,
5565 "Timeout on waiting peer to become ready for GO Negotiation");
5566 p2p_go_neg_failed(p2p, -1);
5567 }
5568
5569
p2p_set_own_pref_freq_list(struct p2p_data * p2p,const struct weighted_pcl * pref_freq_list,unsigned int size)5570 void p2p_set_own_pref_freq_list(struct p2p_data *p2p,
5571 const struct weighted_pcl *pref_freq_list,
5572 unsigned int size)
5573 {
5574 unsigned int i;
5575
5576 if (size > P2P_MAX_PREF_CHANNELS)
5577 size = P2P_MAX_PREF_CHANNELS;
5578 p2p->num_pref_freq = size;
5579 os_memcpy(p2p->pref_freq_list, pref_freq_list,
5580 size * sizeof(struct weighted_pcl));
5581 for (i = 0; i < size; i++) {
5582 p2p_dbg(p2p, "Own preferred frequency list[%u]=%u MHz",
5583 i, p2p->pref_freq_list[i].freq);
5584 }
5585 }
5586
5587
p2p_set_override_pref_op_chan(struct p2p_data * p2p,u8 op_class,u8 chan)5588 void p2p_set_override_pref_op_chan(struct p2p_data *p2p, u8 op_class,
5589 u8 chan)
5590 {
5591 p2p->override_pref_op_class = op_class;
5592 p2p->override_pref_channel = chan;
5593 }
5594
5595
p2p_build_probe_resp_template(struct p2p_data * p2p,unsigned int freq)5596 struct wpabuf * p2p_build_probe_resp_template(struct p2p_data *p2p,
5597 unsigned int freq)
5598 {
5599 struct wpabuf *ies, *buf;
5600 u8 addr[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
5601 int ret;
5602
5603 ies = p2p_build_probe_resp_ies(p2p, NULL, 0);
5604 if (!ies) {
5605 wpa_printf(MSG_ERROR,
5606 "CTRL: Failed to build Probe Response IEs");
5607 return NULL;
5608 }
5609
5610 buf = wpabuf_alloc(200 + wpabuf_len(ies));
5611 if (!buf) {
5612 wpabuf_free(ies);
5613 return NULL;
5614 }
5615
5616 ret = p2p_build_probe_resp_buf(p2p, buf, ies, addr, freq);
5617 wpabuf_free(ies);
5618 if (ret) {
5619 wpabuf_free(buf);
5620 return NULL;
5621 }
5622
5623 return buf;
5624 }
5625
5626
p2p_is_peer_6ghz_capab(struct p2p_data * p2p,const u8 * addr)5627 bool p2p_is_peer_6ghz_capab(struct p2p_data *p2p, const u8 *addr)
5628 {
5629 struct p2p_device *dev;
5630
5631 dev = p2p_get_device(p2p, addr);
5632 if (!dev)
5633 return false;
5634
5635 return dev->support_6ghz;
5636 }
5637
5638
p2p_set_6ghz_dev_capab(struct p2p_data * p2p,bool allow_6ghz)5639 void p2p_set_6ghz_dev_capab(struct p2p_data *p2p, bool allow_6ghz)
5640 {
5641 p2p->p2p_6ghz_capable = allow_6ghz;
5642 p2p->allow_6ghz = allow_6ghz;
5643 p2p_dbg(p2p, "Set 6 GHz capability to %d", allow_6ghz);
5644
5645 if (allow_6ghz)
5646 p2p->dev_capab |= P2P_DEV_CAPAB_6GHZ_BAND_CAPABLE;
5647 else
5648 p2p->dev_capab &= ~P2P_DEV_CAPAB_6GHZ_BAND_CAPABLE;
5649 }
5650
5651
is_p2p_6ghz_capable(struct p2p_data * p2p)5652 bool is_p2p_6ghz_capable(struct p2p_data *p2p)
5653 {
5654 return p2p->p2p_6ghz_capable;
5655 }
5656
5657
p2p_wfd_enabled(struct p2p_data * p2p)5658 bool p2p_wfd_enabled(struct p2p_data *p2p)
5659 {
5660 #ifdef CONFIG_WIFI_DISPLAY
5661 return p2p->wfd_ie_probe_req != NULL;
5662 #else /* CONFIG_WIFI_DISPLAY */
5663 return false;
5664 #endif /* CONFIG_WIFI_DISPLAY */
5665 }
5666
5667
p2p_peer_wfd_enabled(struct p2p_data * p2p,const u8 * peer_addr)5668 bool p2p_peer_wfd_enabled(struct p2p_data *p2p, const u8 *peer_addr)
5669 {
5670 #ifdef CONFIG_WIFI_DISPLAY
5671 struct p2p_device *dev;
5672
5673 dev = p2p_get_device(p2p, peer_addr);
5674 return dev && dev->info.wfd_subelems != NULL;
5675 #else /* CONFIG_WIFI_DISPLAY */
5676 return false;
5677 #endif /* CONFIG_WIFI_DISPLAY */
5678 }
5679
5680
is_p2p_allow_6ghz(struct p2p_data * p2p)5681 bool is_p2p_allow_6ghz(struct p2p_data *p2p)
5682 {
5683 return p2p->allow_6ghz;
5684 }
5685
5686
set_p2p_allow_6ghz(struct p2p_data * p2p,bool value)5687 void set_p2p_allow_6ghz(struct p2p_data *p2p, bool value)
5688 {
5689 p2p->allow_6ghz = value;
5690 }
5691