xref: /freebsd/contrib/wpa/src/p2p/p2p.c (revision a25896ca1270e25b657ceaa8d47d5699515f5c25)
1 /*
2  * Wi-Fi Direct - P2P module
3  * Copyright (c) 2009-2010, Atheros Communications
4  *
5  * This software may be distributed under the terms of the BSD license.
6  * See README for more details.
7  */
8 
9 #include "includes.h"
10 
11 #include "common.h"
12 #include "eloop.h"
13 #include "common/defs.h"
14 #include "common/ieee802_11_defs.h"
15 #include "common/ieee802_11_common.h"
16 #include "common/wpa_ctrl.h"
17 #include "crypto/sha256.h"
18 #include "crypto/crypto.h"
19 #include "wps/wps_i.h"
20 #include "p2p_i.h"
21 #include "p2p.h"
22 
23 
24 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx);
25 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev);
26 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
27 				     const u8 *sa, const u8 *data, size_t len,
28 				     int rx_freq);
29 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
30 				      const u8 *sa, const u8 *data,
31 				      size_t len);
32 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx);
33 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx);
34 
35 
36 /*
37  * p2p_scan recovery timeout
38  *
39  * Many drivers are using 30 second timeout on scan results. Allow a bit larger
40  * timeout for this to avoid hitting P2P timeout unnecessarily.
41  */
42 #define P2P_SCAN_TIMEOUT 35
43 
44 /**
45  * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer
46  * entries will be removed
47  */
48 #ifndef P2P_PEER_EXPIRATION_AGE
49 #define P2P_PEER_EXPIRATION_AGE 60
50 #endif /* P2P_PEER_EXPIRATION_AGE */
51 
52 
53 void p2p_expire_peers(struct p2p_data *p2p)
54 {
55 	struct p2p_device *dev, *n;
56 	struct os_reltime now;
57 	size_t i;
58 
59 	os_get_reltime(&now);
60 	dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
61 		if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec)
62 			continue;
63 
64 		if (dev == p2p->go_neg_peer) {
65 			/*
66 			 * GO Negotiation is in progress with the peer, so
67 			 * don't expire the peer entry until GO Negotiation
68 			 * fails or times out.
69 			 */
70 			continue;
71 		}
72 
73 		if (p2p->cfg->go_connected &&
74 		    p2p->cfg->go_connected(p2p->cfg->cb_ctx,
75 					   dev->info.p2p_device_addr)) {
76 			/*
77 			 * We are connected as a client to a group in which the
78 			 * peer is the GO, so do not expire the peer entry.
79 			 */
80 			os_get_reltime(&dev->last_seen);
81 			continue;
82 		}
83 
84 		for (i = 0; i < p2p->num_groups; i++) {
85 			if (p2p_group_is_client_connected(
86 				    p2p->groups[i], dev->info.p2p_device_addr))
87 				break;
88 		}
89 		if (i < p2p->num_groups) {
90 			/*
91 			 * The peer is connected as a client in a group where
92 			 * we are the GO, so do not expire the peer entry.
93 			 */
94 			os_get_reltime(&dev->last_seen);
95 			continue;
96 		}
97 
98 		p2p_dbg(p2p, "Expiring old peer entry " MACSTR,
99 			MAC2STR(dev->info.p2p_device_addr));
100 		dl_list_del(&dev->list);
101 		p2p_device_free(p2p, dev);
102 	}
103 }
104 
105 
106 static const char * p2p_state_txt(int state)
107 {
108 	switch (state) {
109 	case P2P_IDLE:
110 		return "IDLE";
111 	case P2P_SEARCH:
112 		return "SEARCH";
113 	case P2P_CONNECT:
114 		return "CONNECT";
115 	case P2P_CONNECT_LISTEN:
116 		return "CONNECT_LISTEN";
117 	case P2P_GO_NEG:
118 		return "GO_NEG";
119 	case P2P_LISTEN_ONLY:
120 		return "LISTEN_ONLY";
121 	case P2P_WAIT_PEER_CONNECT:
122 		return "WAIT_PEER_CONNECT";
123 	case P2P_WAIT_PEER_IDLE:
124 		return "WAIT_PEER_IDLE";
125 	case P2P_SD_DURING_FIND:
126 		return "SD_DURING_FIND";
127 	case P2P_PROVISIONING:
128 		return "PROVISIONING";
129 	case P2P_PD_DURING_FIND:
130 		return "PD_DURING_FIND";
131 	case P2P_INVITE:
132 		return "INVITE";
133 	case P2P_INVITE_LISTEN:
134 		return "INVITE_LISTEN";
135 	default:
136 		return "?";
137 	}
138 }
139 
140 
141 const char * p2p_get_state_txt(struct p2p_data *p2p)
142 {
143 	return p2p_state_txt(p2p->state);
144 }
145 
146 
147 struct p2ps_advertisement * p2p_get_p2ps_adv_list(struct p2p_data *p2p)
148 {
149 	return p2p ? p2p->p2ps_adv_list : NULL;
150 }
151 
152 
153 void p2p_set_intended_addr(struct p2p_data *p2p, const u8 *intended_addr)
154 {
155 	if (p2p && intended_addr)
156 		os_memcpy(p2p->intended_addr, intended_addr, ETH_ALEN);
157 }
158 
159 
160 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr)
161 {
162 	struct p2p_device *dev = NULL;
163 
164 	if (!addr || !p2p)
165 		return 0;
166 
167 	dev = p2p_get_device(p2p, addr);
168 	if (dev)
169 		return dev->wps_prov_info;
170 	else
171 		return 0;
172 }
173 
174 
175 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr)
176 {
177 	struct p2p_device *dev = NULL;
178 
179 	if (!addr || !p2p)
180 		return;
181 
182 	dev = p2p_get_device(p2p, addr);
183 	if (dev)
184 		dev->wps_prov_info = 0;
185 }
186 
187 
188 void p2p_set_state(struct p2p_data *p2p, int new_state)
189 {
190 	p2p_dbg(p2p, "State %s -> %s",
191 		p2p_state_txt(p2p->state), p2p_state_txt(new_state));
192 	p2p->state = new_state;
193 
194 	if (new_state == P2P_IDLE && p2p->pending_channel) {
195 		p2p_dbg(p2p, "Apply change in listen channel");
196 		p2p->cfg->reg_class = p2p->pending_reg_class;
197 		p2p->cfg->channel = p2p->pending_channel;
198 		p2p->pending_reg_class = 0;
199 		p2p->pending_channel = 0;
200 	}
201 }
202 
203 
204 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
205 {
206 	p2p_dbg(p2p, "Set timeout (state=%s): %u.%06u sec",
207 		p2p_state_txt(p2p->state), sec, usec);
208 	eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
209 	eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
210 }
211 
212 
213 void p2p_clear_timeout(struct p2p_data *p2p)
214 {
215 	p2p_dbg(p2p, "Clear timeout (state=%s)", p2p_state_txt(p2p->state));
216 	eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
217 }
218 
219 
220 void p2p_go_neg_failed(struct p2p_data *p2p, int status)
221 {
222 	struct p2p_go_neg_results res;
223 	struct p2p_device *peer = p2p->go_neg_peer;
224 
225 	if (!peer)
226 		return;
227 
228 	eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
229 	if (p2p->state != P2P_SEARCH) {
230 		/*
231 		 * Clear timeouts related to GO Negotiation if no new p2p_find
232 		 * has been started.
233 		 */
234 		p2p_clear_timeout(p2p);
235 		p2p_set_state(p2p, P2P_IDLE);
236 	}
237 
238 	peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
239 	peer->wps_method = WPS_NOT_READY;
240 	peer->oob_pw_id = 0;
241 	wpabuf_free(peer->go_neg_conf);
242 	peer->go_neg_conf = NULL;
243 	p2p->go_neg_peer = NULL;
244 
245 	os_memset(&res, 0, sizeof(res));
246 	res.status = status;
247 	os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
248 	os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
249 	p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
250 }
251 
252 
253 static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc)
254 {
255 	unsigned int r, tu;
256 	int freq;
257 	struct wpabuf *ies;
258 
259 	p2p_dbg(p2p, "Starting short listen state (state=%s)",
260 		p2p_state_txt(p2p->state));
261 
262 	if (p2p->pending_listen_freq) {
263 		/* We have a pending p2p_listen request */
264 		p2p_dbg(p2p, "p2p_listen command pending already");
265 		return;
266 	}
267 
268 	freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
269 	if (freq < 0) {
270 		p2p_dbg(p2p, "Unknown regulatory class/channel");
271 		return;
272 	}
273 
274 	if (os_get_random((u8 *) &r, sizeof(r)) < 0)
275 		r = 0;
276 	tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
277 	      p2p->min_disc_int) * 100;
278 	if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu)
279 		tu = p2p->max_disc_tu;
280 	if (!dev_disc && tu < 100)
281 		tu = 100; /* Need to wait in non-device discovery use cases */
282 	if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen)
283 		tu = p2p->cfg->max_listen * 1000 / 1024;
284 
285 	if (tu == 0) {
286 		p2p_dbg(p2p, "Skip listen state since duration was 0 TU");
287 		p2p_set_timeout(p2p, 0, 0);
288 		return;
289 	}
290 
291 	ies = p2p_build_probe_resp_ies(p2p, NULL, 0);
292 	if (ies == NULL)
293 		return;
294 
295 	p2p->pending_listen_freq = freq;
296 	p2p->pending_listen_sec = 0;
297 	p2p->pending_listen_usec = 1024 * tu;
298 
299 	if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
300 		    ies) < 0) {
301 		p2p_dbg(p2p, "Failed to start listen mode");
302 		p2p->pending_listen_freq = 0;
303 	}
304 	wpabuf_free(ies);
305 }
306 
307 
308 int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
309 {
310 	int freq;
311 	struct wpabuf *ies;
312 
313 	p2p_dbg(p2p, "Going to listen(only) state");
314 
315 	if (p2p->pending_listen_freq) {
316 		/* We have a pending p2p_listen request */
317 		p2p_dbg(p2p, "p2p_listen command pending already");
318 		return -1;
319 	}
320 
321 	freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
322 	if (freq < 0) {
323 		p2p_dbg(p2p, "Unknown regulatory class/channel");
324 		return -1;
325 	}
326 
327 	p2p->pending_listen_sec = timeout / 1000;
328 	p2p->pending_listen_usec = (timeout % 1000) * 1000;
329 
330 	if (p2p->p2p_scan_running) {
331 		if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) {
332 			p2p_dbg(p2p, "p2p_scan running - connect is already pending - skip listen");
333 			return 0;
334 		}
335 		p2p_dbg(p2p, "p2p_scan running - delay start of listen state");
336 		p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
337 		return 0;
338 	}
339 
340 	ies = p2p_build_probe_resp_ies(p2p, NULL, 0);
341 	if (ies == NULL)
342 		return -1;
343 
344 	p2p->pending_listen_freq = freq;
345 
346 	if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
347 		p2p_dbg(p2p, "Failed to start listen mode");
348 		p2p->pending_listen_freq = 0;
349 		wpabuf_free(ies);
350 		return -1;
351 	}
352 	wpabuf_free(ies);
353 
354 	p2p_set_state(p2p, P2P_LISTEN_ONLY);
355 
356 	return 0;
357 }
358 
359 
360 static void p2p_device_clear_reported(struct p2p_data *p2p)
361 {
362 	struct p2p_device *dev;
363 	dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
364 		dev->flags &= ~P2P_DEV_REPORTED;
365 		dev->sd_reqs = 0;
366 	}
367 }
368 
369 
370 /**
371  * p2p_get_device - Fetch a peer entry
372  * @p2p: P2P module context from p2p_init()
373  * @addr: P2P Device Address of the peer
374  * Returns: Pointer to the device entry or %NULL if not found
375  */
376 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
377 {
378 	struct p2p_device *dev;
379 	dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
380 		if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
381 			return dev;
382 	}
383 	return NULL;
384 }
385 
386 
387 /**
388  * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
389  * @p2p: P2P module context from p2p_init()
390  * @addr: P2P Interface Address of the peer
391  * Returns: Pointer to the device entry or %NULL if not found
392  */
393 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
394 					     const u8 *addr)
395 {
396 	struct p2p_device *dev;
397 	dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
398 		if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
399 			return dev;
400 	}
401 	return NULL;
402 }
403 
404 
405 /**
406  * p2p_create_device - Create a peer entry
407  * @p2p: P2P module context from p2p_init()
408  * @addr: P2P Device Address of the peer
409  * Returns: Pointer to the device entry or %NULL on failure
410  *
411  * If there is already an entry for the peer, it will be returned instead of
412  * creating a new one.
413  */
414 static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
415 					     const u8 *addr)
416 {
417 	struct p2p_device *dev, *oldest = NULL;
418 	size_t count = 0;
419 
420 	dev = p2p_get_device(p2p, addr);
421 	if (dev)
422 		return dev;
423 
424 	dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
425 		count++;
426 		if (oldest == NULL ||
427 		    os_reltime_before(&dev->last_seen, &oldest->last_seen))
428 			oldest = dev;
429 	}
430 	if (count + 1 > p2p->cfg->max_peers && oldest) {
431 		p2p_dbg(p2p, "Remove oldest peer entry to make room for a new peer");
432 		dl_list_del(&oldest->list);
433 		p2p_device_free(p2p, oldest);
434 	}
435 
436 	dev = os_zalloc(sizeof(*dev));
437 	if (dev == NULL)
438 		return NULL;
439 	dl_list_add(&p2p->devices, &dev->list);
440 	os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
441 
442 	return dev;
443 }
444 
445 
446 static void p2p_copy_client_info(struct p2p_device *dev,
447 				 struct p2p_client_info *cli)
448 {
449 	p2p_copy_filter_devname(dev->info.device_name,
450 				sizeof(dev->info.device_name),
451 				cli->dev_name, cli->dev_name_len);
452 	dev->info.dev_capab = cli->dev_capab;
453 	dev->info.config_methods = cli->config_methods;
454 	os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
455 	dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
456 	os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
457 		  dev->info.wps_sec_dev_type_list_len);
458 }
459 
460 
461 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
462 				 const u8 *go_interface_addr, int freq,
463 				 const u8 *gi, size_t gi_len,
464 				 struct os_reltime *rx_time)
465 {
466 	struct p2p_group_info info;
467 	size_t c;
468 	struct p2p_device *dev;
469 
470 	if (gi == NULL)
471 		return 0;
472 
473 	if (p2p_group_info_parse(gi, gi_len, &info) < 0)
474 		return -1;
475 
476 	/*
477 	 * Clear old data for this group; if the devices are still in the
478 	 * group, the information will be restored in the loop following this.
479 	 */
480 	dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
481 		if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
482 			      ETH_ALEN) == 0) {
483 			os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
484 			os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
485 		}
486 	}
487 
488 	for (c = 0; c < info.num_clients; c++) {
489 		struct p2p_client_info *cli = &info.client[c];
490 		if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
491 			      ETH_ALEN) == 0)
492 			continue; /* ignore our own entry */
493 		dev = p2p_get_device(p2p, cli->p2p_device_addr);
494 		if (dev) {
495 			if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
496 					  P2P_DEV_PROBE_REQ_ONLY)) {
497 				/*
498 				 * Update information since we have not
499 				 * received this directly from the client.
500 				 */
501 				p2p_copy_client_info(dev, cli);
502 			} else {
503 				/*
504 				 * Need to update P2P Client Discoverability
505 				 * flag since it is valid only in P2P Group
506 				 * Info attribute.
507 				 */
508 				dev->info.dev_capab &=
509 					~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
510 				dev->info.dev_capab |=
511 					cli->dev_capab &
512 					P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
513 			}
514 			if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
515 				dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
516 			}
517 		} else {
518 			dev = p2p_create_device(p2p, cli->p2p_device_addr);
519 			if (dev == NULL)
520 				continue;
521 			dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
522 			p2p_copy_client_info(dev, cli);
523 			dev->oper_freq = freq;
524 			p2p->cfg->dev_found(p2p->cfg->cb_ctx,
525 					    dev->info.p2p_device_addr,
526 					    &dev->info, 1);
527 			dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
528 		}
529 
530 		os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
531 			  ETH_ALEN);
532 		os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
533 		os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
534 		os_memcpy(dev->member_in_go_iface, go_interface_addr,
535 			  ETH_ALEN);
536 		dev->flags |= P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT;
537 	}
538 
539 	return 0;
540 }
541 
542 
543 static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev,
544 			      int probe_req, const struct p2p_message *msg)
545 {
546 	os_memcpy(dev->info.device_name, msg->device_name,
547 		  sizeof(dev->info.device_name));
548 
549 	if (msg->manufacturer &&
550 	    msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
551 		os_memset(dev->info.manufacturer, 0,
552 			  sizeof(dev->info.manufacturer));
553 		os_memcpy(dev->info.manufacturer, msg->manufacturer,
554 			  msg->manufacturer_len);
555 	}
556 
557 	if (msg->model_name &&
558 	    msg->model_name_len < sizeof(dev->info.model_name)) {
559 		os_memset(dev->info.model_name, 0,
560 			  sizeof(dev->info.model_name));
561 		os_memcpy(dev->info.model_name, msg->model_name,
562 			  msg->model_name_len);
563 	}
564 
565 	if (msg->model_number &&
566 	    msg->model_number_len < sizeof(dev->info.model_number)) {
567 		os_memset(dev->info.model_number, 0,
568 			  sizeof(dev->info.model_number));
569 		os_memcpy(dev->info.model_number, msg->model_number,
570 			  msg->model_number_len);
571 	}
572 
573 	if (msg->serial_number &&
574 	    msg->serial_number_len < sizeof(dev->info.serial_number)) {
575 		os_memset(dev->info.serial_number, 0,
576 			  sizeof(dev->info.serial_number));
577 		os_memcpy(dev->info.serial_number, msg->serial_number,
578 			  msg->serial_number_len);
579 	}
580 
581 	if (msg->pri_dev_type)
582 		os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
583 			  sizeof(dev->info.pri_dev_type));
584 	else if (msg->wps_pri_dev_type)
585 		os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
586 			  sizeof(dev->info.pri_dev_type));
587 
588 	if (msg->wps_sec_dev_type_list) {
589 		os_memcpy(dev->info.wps_sec_dev_type_list,
590 			  msg->wps_sec_dev_type_list,
591 			  msg->wps_sec_dev_type_list_len);
592 		dev->info.wps_sec_dev_type_list_len =
593 			msg->wps_sec_dev_type_list_len;
594 	}
595 
596 	if (msg->capability) {
597 		/*
598 		 * P2P Client Discoverability bit is reserved in all frames
599 		 * that use this function, so do not change its value here.
600 		 */
601 		dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
602 		dev->info.dev_capab |= msg->capability[0] &
603 			~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
604 		dev->info.group_capab = msg->capability[1];
605 	}
606 
607 	if (msg->ext_listen_timing) {
608 		dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
609 		dev->ext_listen_interval =
610 			WPA_GET_LE16(msg->ext_listen_timing + 2);
611 	}
612 
613 	if (!probe_req) {
614 		u16 new_config_methods;
615 		new_config_methods = msg->config_methods ?
616 			msg->config_methods : msg->wps_config_methods;
617 		if (new_config_methods &&
618 		    dev->info.config_methods != new_config_methods) {
619 			p2p_dbg(p2p, "Update peer " MACSTR
620 				" config_methods 0x%x -> 0x%x",
621 				MAC2STR(dev->info.p2p_device_addr),
622 				dev->info.config_methods,
623 				new_config_methods);
624 			dev->info.config_methods = new_config_methods;
625 		}
626 	}
627 }
628 
629 
630 static void p2p_update_peer_vendor_elems(struct p2p_device *dev, const u8 *ies,
631 					 size_t ies_len)
632 {
633 	const u8 *pos, *end;
634 	u8 id, len;
635 
636 	wpabuf_free(dev->info.vendor_elems);
637 	dev->info.vendor_elems = NULL;
638 
639 	end = ies + ies_len;
640 
641 	for (pos = ies; end - pos > 1; pos += len) {
642 		id = *pos++;
643 		len = *pos++;
644 
645 		if (len > end - pos)
646 			break;
647 
648 		if (id != WLAN_EID_VENDOR_SPECIFIC || len < 3)
649 			continue;
650 
651 		if (len >= 4) {
652 			u32 type = WPA_GET_BE32(pos);
653 
654 			if (type == WPA_IE_VENDOR_TYPE ||
655 			    type == WMM_IE_VENDOR_TYPE ||
656 			    type == WPS_IE_VENDOR_TYPE ||
657 			    type == P2P_IE_VENDOR_TYPE ||
658 			    type == WFD_IE_VENDOR_TYPE)
659 				continue;
660 		}
661 
662 		/* Unknown vendor element - make raw IE data available */
663 		if (wpabuf_resize(&dev->info.vendor_elems, 2 + len) < 0)
664 			break;
665 		wpabuf_put_data(dev->info.vendor_elems, pos - 2, 2 + len);
666 	}
667 }
668 
669 
670 static int p2p_compare_wfd_info(struct p2p_device *dev,
671 			      const struct p2p_message *msg)
672 {
673 	if (dev->info.wfd_subelems && msg->wfd_subelems) {
674 		if (dev->info.wfd_subelems->used != msg->wfd_subelems->used)
675 			return 1;
676 
677 		return os_memcmp(dev->info.wfd_subelems->buf,
678 				 msg->wfd_subelems->buf,
679 				 dev->info.wfd_subelems->used);
680 	}
681 	if (dev->info.wfd_subelems || msg->wfd_subelems)
682 		return 1;
683 
684 	return 0;
685 }
686 
687 
688 /**
689  * p2p_add_device - Add peer entries based on scan results or P2P frames
690  * @p2p: P2P module context from p2p_init()
691  * @addr: Source address of Beacon or Probe Response frame (may be either
692  *	P2P Device Address or P2P Interface Address)
693  * @level: Signal level (signal strength of the received frame from the peer)
694  * @freq: Frequency on which the Beacon or Probe Response frame was received
695  * @rx_time: Time when the result was received
696  * @ies: IEs from the Beacon or Probe Response frame
697  * @ies_len: Length of ies buffer in octets
698  * @scan_res: Whether this was based on scan results
699  * Returns: 0 on success, -1 on failure
700  *
701  * If the scan result is for a GO, the clients in the group will also be added
702  * to the peer table. This function can also be used with some other frames
703  * like Provision Discovery Request that contains P2P Capability and P2P Device
704  * Info attributes.
705  */
706 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
707 		   struct os_reltime *rx_time, int level, const u8 *ies,
708 		   size_t ies_len, int scan_res)
709 {
710 	struct p2p_device *dev;
711 	struct p2p_message msg;
712 	const u8 *p2p_dev_addr;
713 	int wfd_changed;
714 	int i;
715 	struct os_reltime time_now;
716 
717 	os_memset(&msg, 0, sizeof(msg));
718 	if (p2p_parse_ies(ies, ies_len, &msg)) {
719 		p2p_dbg(p2p, "Failed to parse P2P IE for a device entry");
720 		p2p_parse_free(&msg);
721 		return -1;
722 	}
723 
724 	if (msg.p2p_device_addr)
725 		p2p_dev_addr = msg.p2p_device_addr;
726 	else if (msg.device_id)
727 		p2p_dev_addr = msg.device_id;
728 	else {
729 		p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
730 		p2p_parse_free(&msg);
731 		return -1;
732 	}
733 
734 	if (!is_zero_ether_addr(p2p->peer_filter) &&
735 	    os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
736 		p2p_dbg(p2p, "Do not add peer filter for " MACSTR
737 			" due to peer filter", MAC2STR(p2p_dev_addr));
738 		p2p_parse_free(&msg);
739 		return 0;
740 	}
741 
742 	dev = p2p_create_device(p2p, p2p_dev_addr);
743 	if (dev == NULL) {
744 		p2p_parse_free(&msg);
745 		return -1;
746 	}
747 
748 	if (rx_time == NULL) {
749 		os_get_reltime(&time_now);
750 		rx_time = &time_now;
751 	}
752 
753 	/*
754 	 * Update the device entry only if the new peer
755 	 * entry is newer than the one previously stored, or if
756 	 * the device was previously seen as a P2P Client in a group
757 	 * and the new entry isn't older than a threshold.
758 	 */
759 	if (dev->last_seen.sec > 0 &&
760 	    os_reltime_before(rx_time, &dev->last_seen) &&
761 	    (!(dev->flags & P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT) ||
762 	     os_reltime_expired(&dev->last_seen, rx_time,
763 				P2P_DEV_GROUP_CLIENT_RESP_THRESHOLD))) {
764 		p2p_dbg(p2p,
765 			"Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u flags=0x%x)",
766 			(unsigned int) rx_time->sec,
767 			(unsigned int) rx_time->usec,
768 			(unsigned int) dev->last_seen.sec,
769 			(unsigned int) dev->last_seen.usec,
770 			dev->flags);
771 		p2p_parse_free(&msg);
772 		return -1;
773 	}
774 
775 	os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
776 
777 	dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY |
778 			P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT);
779 
780 	if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
781 		os_memcpy(dev->interface_addr, addr, ETH_ALEN);
782 	if (msg.ssid &&
783 	    msg.ssid[1] <= sizeof(dev->oper_ssid) &&
784 	    (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
785 	     os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
786 	     != 0)) {
787 		os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
788 		dev->oper_ssid_len = msg.ssid[1];
789 	}
790 
791 	wpabuf_free(dev->info.p2ps_instance);
792 	dev->info.p2ps_instance = NULL;
793 	if (msg.adv_service_instance && msg.adv_service_instance_len)
794 		dev->info.p2ps_instance = wpabuf_alloc_copy(
795 			msg.adv_service_instance, msg.adv_service_instance_len);
796 
797 	if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
798 	    *msg.ds_params >= 1 && *msg.ds_params <= 14) {
799 		int ds_freq;
800 		if (*msg.ds_params == 14)
801 			ds_freq = 2484;
802 		else
803 			ds_freq = 2407 + *msg.ds_params * 5;
804 		if (freq != ds_freq) {
805 			p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz",
806 				freq, ds_freq);
807 			freq = ds_freq;
808 		}
809 	}
810 
811 	if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
812 		p2p_dbg(p2p, "Update Listen frequency based on scan results ("
813 			MACSTR " %d -> %d MHz (DS param %d)",
814 			MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
815 			freq, msg.ds_params ? *msg.ds_params : -1);
816 	}
817 	if (scan_res) {
818 		dev->listen_freq = freq;
819 		if (msg.group_info)
820 			dev->oper_freq = freq;
821 	}
822 	dev->info.level = level;
823 
824 	p2p_copy_wps_info(p2p, dev, 0, &msg);
825 
826 	for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
827 		wpabuf_free(dev->info.wps_vendor_ext[i]);
828 		dev->info.wps_vendor_ext[i] = NULL;
829 	}
830 
831 	for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
832 		if (msg.wps_vendor_ext[i] == NULL)
833 			break;
834 		dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
835 			msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
836 		if (dev->info.wps_vendor_ext[i] == NULL)
837 			break;
838 	}
839 
840 	wfd_changed = p2p_compare_wfd_info(dev, &msg);
841 
842 	if (msg.wfd_subelems) {
843 		wpabuf_free(dev->info.wfd_subelems);
844 		dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
845 	}
846 
847 	if (scan_res) {
848 		p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
849 				      msg.group_info, msg.group_info_len,
850 				      rx_time);
851 	}
852 
853 	p2p_parse_free(&msg);
854 
855 	p2p_update_peer_vendor_elems(dev, ies, ies_len);
856 
857 	if (dev->flags & P2P_DEV_REPORTED && !wfd_changed &&
858 	    (!msg.adv_service_instance ||
859 	     (dev->flags & P2P_DEV_P2PS_REPORTED)))
860 		return 0;
861 
862 	p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)",
863 		freq, (unsigned int) rx_time->sec,
864 		(unsigned int) rx_time->usec);
865 	if (dev->flags & P2P_DEV_USER_REJECTED) {
866 		p2p_dbg(p2p, "Do not report rejected device");
867 		return 0;
868 	}
869 
870 	if (dev->info.config_methods == 0 &&
871 	    (freq == 2412 || freq == 2437 || freq == 2462)) {
872 		/*
873 		 * If we have only seen a Beacon frame from a GO, we do not yet
874 		 * know what WPS config methods it supports. Since some
875 		 * applications use config_methods value from P2P-DEVICE-FOUND
876 		 * events, postpone reporting this peer until we've fully
877 		 * discovered its capabilities.
878 		 *
879 		 * At least for now, do this only if the peer was detected on
880 		 * one of the social channels since that peer can be easily be
881 		 * found again and there are no limitations of having to use
882 		 * passive scan on this channels, so this can be done through
883 		 * Probe Response frame that includes the config_methods
884 		 * information.
885 		 */
886 		p2p_dbg(p2p, "Do not report peer " MACSTR
887 			" with unknown config methods", MAC2STR(addr));
888 		return 0;
889 	}
890 
891 	p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
892 			    !(dev->flags & P2P_DEV_REPORTED_ONCE));
893 	dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
894 
895 	if (msg.adv_service_instance)
896 		dev->flags |= P2P_DEV_P2PS_REPORTED;
897 
898 	return 0;
899 }
900 
901 
902 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
903 {
904 	int i;
905 
906 	if (p2p->go_neg_peer == dev) {
907 		/*
908 		 * If GO Negotiation is in progress, report that it has failed.
909 		 */
910 		p2p_go_neg_failed(p2p, -1);
911 	}
912 	if (p2p->invite_peer == dev)
913 		p2p->invite_peer = NULL;
914 	if (p2p->sd_peer == dev)
915 		p2p->sd_peer = NULL;
916 	if (p2p->pending_client_disc_go == dev)
917 		p2p->pending_client_disc_go = NULL;
918 
919 	/* dev_lost() device, but only if it was previously dev_found() */
920 	if (dev->flags & P2P_DEV_REPORTED_ONCE)
921 		p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
922 				   dev->info.p2p_device_addr);
923 
924 	for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
925 		wpabuf_free(dev->info.wps_vendor_ext[i]);
926 		dev->info.wps_vendor_ext[i] = NULL;
927 	}
928 
929 	wpabuf_free(dev->info.wfd_subelems);
930 	wpabuf_free(dev->info.vendor_elems);
931 	wpabuf_free(dev->go_neg_conf);
932 	wpabuf_free(dev->info.p2ps_instance);
933 
934 	os_free(dev);
935 }
936 
937 
938 static int p2p_get_next_prog_freq(struct p2p_data *p2p)
939 {
940 	struct p2p_channels *c;
941 	struct p2p_reg_class *cla;
942 	size_t cl, ch;
943 	int found = 0;
944 	u8 reg_class;
945 	u8 channel;
946 	int freq;
947 
948 	c = &p2p->cfg->channels;
949 	for (cl = 0; cl < c->reg_classes; cl++) {
950 		cla = &c->reg_class[cl];
951 		if (cla->reg_class != p2p->last_prog_scan_class)
952 			continue;
953 		for (ch = 0; ch < cla->channels; ch++) {
954 			if (cla->channel[ch] == p2p->last_prog_scan_chan) {
955 				found = 1;
956 				break;
957 			}
958 		}
959 		if (found)
960 			break;
961 	}
962 
963 	if (!found) {
964 		/* Start from beginning */
965 		reg_class = c->reg_class[0].reg_class;
966 		channel = c->reg_class[0].channel[0];
967 	} else {
968 		/* Pick the next channel */
969 		ch++;
970 		if (ch == cla->channels) {
971 			cl++;
972 			if (cl == c->reg_classes)
973 				cl = 0;
974 			ch = 0;
975 		}
976 		reg_class = c->reg_class[cl].reg_class;
977 		channel = c->reg_class[cl].channel[ch];
978 	}
979 
980 	freq = p2p_channel_to_freq(reg_class, channel);
981 	p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz",
982 		reg_class, channel, freq);
983 	p2p->last_prog_scan_class = reg_class;
984 	p2p->last_prog_scan_chan = channel;
985 
986 	if (freq == 2412 || freq == 2437 || freq == 2462)
987 		return 0; /* No need to add social channels */
988 	return freq;
989 }
990 
991 
992 static void p2p_search(struct p2p_data *p2p)
993 {
994 	int freq = 0;
995 	enum p2p_scan_type type;
996 	u16 pw_id = DEV_PW_DEFAULT;
997 	int res;
998 
999 	if (p2p->drv_in_listen) {
1000 		p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing");
1001 		return;
1002 	}
1003 	p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1004 
1005 	if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
1006 	    (freq = p2p_get_next_prog_freq(p2p)) > 0) {
1007 		type = P2P_SCAN_SOCIAL_PLUS_ONE;
1008 		p2p_dbg(p2p, "Starting search (+ freq %u)", freq);
1009 	} else {
1010 		type = P2P_SCAN_SOCIAL;
1011 		p2p_dbg(p2p, "Starting search");
1012 	}
1013 
1014 	res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
1015 				 p2p->num_req_dev_types, p2p->req_dev_types,
1016 				 p2p->find_dev_id, pw_id);
1017 	if (res < 0) {
1018 		p2p_dbg(p2p, "Scan request schedule failed");
1019 		p2p_continue_find(p2p);
1020 	}
1021 }
1022 
1023 
1024 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
1025 {
1026 	struct p2p_data *p2p = eloop_ctx;
1027 	p2p_dbg(p2p, "Find timeout -> stop");
1028 	p2p_stop_find(p2p);
1029 }
1030 
1031 
1032 void p2p_notify_scan_trigger_status(struct p2p_data *p2p, int status)
1033 {
1034 	if (status != 0) {
1035 		p2p_dbg(p2p, "Scan request failed");
1036 		/* Do continue find even for the first p2p_find_scan */
1037 		p2p_continue_find(p2p);
1038 	} else {
1039 		p2p_dbg(p2p, "Running p2p_scan");
1040 		p2p->p2p_scan_running = 1;
1041 		eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1042 		eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1043 				       p2p, NULL);
1044 	}
1045 }
1046 
1047 
1048 static int p2p_run_after_scan(struct p2p_data *p2p)
1049 {
1050 	struct p2p_device *dev;
1051 	enum p2p_after_scan op;
1052 
1053 	if (p2p->after_scan_tx) {
1054 		p2p->after_scan_tx_in_progress = 1;
1055 		p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion");
1056 		p2p->cfg->send_action(p2p->cfg->cb_ctx,
1057 				      p2p->after_scan_tx->freq,
1058 				      p2p->after_scan_tx->dst,
1059 				      p2p->after_scan_tx->src,
1060 				      p2p->after_scan_tx->bssid,
1061 				      (u8 *) (p2p->after_scan_tx + 1),
1062 				      p2p->after_scan_tx->len,
1063 				      p2p->after_scan_tx->wait_time);
1064 		os_free(p2p->after_scan_tx);
1065 		p2p->after_scan_tx = NULL;
1066 		return 1;
1067 	}
1068 
1069 	op = p2p->start_after_scan;
1070 	p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1071 	switch (op) {
1072 	case P2P_AFTER_SCAN_NOTHING:
1073 		break;
1074 	case P2P_AFTER_SCAN_LISTEN:
1075 		p2p_dbg(p2p, "Start previously requested Listen state");
1076 		p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
1077 			   p2p->pending_listen_usec / 1000);
1078 		return 1;
1079 	case P2P_AFTER_SCAN_CONNECT:
1080 		p2p_dbg(p2p, "Start previously requested connect with " MACSTR,
1081 			MAC2STR(p2p->after_scan_peer));
1082 		dev = p2p_get_device(p2p, p2p->after_scan_peer);
1083 		if (dev == NULL) {
1084 			p2p_dbg(p2p, "Peer not known anymore");
1085 			break;
1086 		}
1087 		p2p_connect_send(p2p, dev);
1088 		return 1;
1089 	}
1090 
1091 	return 0;
1092 }
1093 
1094 
1095 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1096 {
1097 	struct p2p_data *p2p = eloop_ctx;
1098 	int running;
1099 	p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running);
1100 	running = p2p->p2p_scan_running;
1101 	/* Make sure we recover from missed scan results callback */
1102 	p2p->p2p_scan_running = 0;
1103 
1104 	if (running)
1105 		p2p_run_after_scan(p2p);
1106 }
1107 
1108 
1109 static void p2p_free_req_dev_types(struct p2p_data *p2p)
1110 {
1111 	p2p->num_req_dev_types = 0;
1112 	os_free(p2p->req_dev_types);
1113 	p2p->req_dev_types = NULL;
1114 }
1115 
1116 
1117 static int p2ps_gen_hash(struct p2p_data *p2p, const char *str, u8 *hash)
1118 {
1119 	u8 buf[SHA256_MAC_LEN];
1120 	char str_buf[256];
1121 	const u8 *adv_array;
1122 	size_t i, adv_len;
1123 
1124 	if (!str || !hash)
1125 		return 0;
1126 
1127 	if (!str[0]) {
1128 		os_memcpy(hash, p2p->wild_card_hash, P2PS_HASH_LEN);
1129 		return 1;
1130 	}
1131 
1132 	adv_array = (u8 *) str_buf;
1133 	adv_len = os_strlen(str);
1134 	if (adv_len >= sizeof(str_buf))
1135 		return 0;
1136 
1137 	for (i = 0; i < adv_len; i++) {
1138 		if (str[i] >= 'A' && str[i] <= 'Z')
1139 			str_buf[i] = str[i] - 'A' + 'a';
1140 		else
1141 			str_buf[i] = str[i];
1142 	}
1143 
1144 	if (sha256_vector(1, &adv_array, &adv_len, buf))
1145 		return 0;
1146 
1147 	os_memcpy(hash, buf, P2PS_HASH_LEN);
1148 	return 1;
1149 }
1150 
1151 
1152 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
1153 	     enum p2p_discovery_type type,
1154 	     unsigned int num_req_dev_types, const u8 *req_dev_types,
1155 	     const u8 *dev_id, unsigned int search_delay,
1156 	     u8 seek_count, const char **seek, int freq)
1157 {
1158 	int res;
1159 
1160 	p2p_dbg(p2p, "Starting find (type=%d)", type);
1161 	os_get_reltime(&p2p->find_start);
1162 	if (p2p->p2p_scan_running) {
1163 		p2p_dbg(p2p, "p2p_scan is already running");
1164 	}
1165 
1166 	p2p_free_req_dev_types(p2p);
1167 	if (req_dev_types && num_req_dev_types) {
1168 		p2p->req_dev_types = os_malloc(num_req_dev_types *
1169 					       WPS_DEV_TYPE_LEN);
1170 		if (p2p->req_dev_types == NULL)
1171 			return -1;
1172 		os_memcpy(p2p->req_dev_types, req_dev_types,
1173 			  num_req_dev_types * WPS_DEV_TYPE_LEN);
1174 		p2p->num_req_dev_types = num_req_dev_types;
1175 	}
1176 
1177 	if (dev_id) {
1178 		os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
1179 		p2p->find_dev_id = p2p->find_dev_id_buf;
1180 	} else
1181 		p2p->find_dev_id = NULL;
1182 
1183 	if (seek_count == 0 || !seek) {
1184 		/* Not an ASP search */
1185 		p2p->p2ps_seek = 0;
1186 	} else if (seek_count == 1 && seek && (!seek[0] || !seek[0][0])) {
1187 		/*
1188 		 * An empty seek string means no hash values, but still an ASP
1189 		 * search.
1190 		 */
1191 		p2p_dbg(p2p, "ASP search");
1192 		p2p->p2ps_seek_count = 0;
1193 		p2p->p2ps_seek = 1;
1194 	} else if (seek && seek_count <= P2P_MAX_QUERY_HASH) {
1195 		u8 buf[P2PS_HASH_LEN];
1196 		int i, count = 0;
1197 
1198 		for (i = 0; i < seek_count; i++) {
1199 			if (!p2ps_gen_hash(p2p, seek[i], buf))
1200 				continue;
1201 
1202 			p2p_dbg(p2p, "Seek service %s hash " MACSTR,
1203 				seek[i], MAC2STR(buf));
1204 			os_memcpy(&p2p->p2ps_seek_hash[count * P2PS_HASH_LEN],
1205 				  buf, P2PS_HASH_LEN);
1206 			count++;
1207 		}
1208 
1209 		p2p->p2ps_seek_count = count;
1210 		p2p->p2ps_seek = 1;
1211 	} else {
1212 		p2p->p2ps_seek_count = 0;
1213 		p2p->p2ps_seek = 1;
1214 	}
1215 
1216 	/* Special case to perform wildcard search */
1217 	if (p2p->p2ps_seek_count == 0 && p2p->p2ps_seek) {
1218 		p2p->p2ps_seek_count = 1;
1219 		os_memcpy(&p2p->p2ps_seek_hash, p2p->wild_card_hash,
1220 			  P2PS_HASH_LEN);
1221 	}
1222 
1223 	p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1224 	p2p_clear_timeout(p2p);
1225 	if (p2p->pending_listen_freq) {
1226 		p2p_dbg(p2p, "Clear pending_listen_freq for p2p_find");
1227 		p2p->pending_listen_freq = 0;
1228 	}
1229 	p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1230 	p2p->find_type = type;
1231 	p2p_device_clear_reported(p2p);
1232 	os_memset(p2p->sd_query_no_ack, 0, ETH_ALEN);
1233 	p2p_set_state(p2p, P2P_SEARCH);
1234 	p2p->search_delay = search_delay;
1235 	p2p->in_search_delay = 0;
1236 	eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1237 	p2p->last_p2p_find_timeout = timeout;
1238 	if (timeout)
1239 		eloop_register_timeout(timeout, 0, p2p_find_timeout,
1240 				       p2p, NULL);
1241 	switch (type) {
1242 	case P2P_FIND_START_WITH_FULL:
1243 		if (freq > 0) {
1244 			/*
1245 			 * Start with the specified channel and then move to
1246 			 * social channels only scans.
1247 			 */
1248 			res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx,
1249 						 P2P_SCAN_SPECIFIC, freq,
1250 						 p2p->num_req_dev_types,
1251 						 p2p->req_dev_types, dev_id,
1252 						 DEV_PW_DEFAULT);
1253 			break;
1254 		}
1255 		/* fall through */
1256 	case P2P_FIND_PROGRESSIVE:
1257 		res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1258 					 p2p->num_req_dev_types,
1259 					 p2p->req_dev_types, dev_id,
1260 					 DEV_PW_DEFAULT);
1261 		break;
1262 	case P2P_FIND_ONLY_SOCIAL:
1263 		res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1264 					 p2p->num_req_dev_types,
1265 					 p2p->req_dev_types, dev_id,
1266 					 DEV_PW_DEFAULT);
1267 		break;
1268 	default:
1269 		return -1;
1270 	}
1271 
1272 	if (res != 0 && p2p->p2p_scan_running) {
1273 		p2p_dbg(p2p, "Failed to start p2p_scan - another p2p_scan was already running");
1274 		/* wait for the previous p2p_scan to complete */
1275 		res = 0; /* do not report failure */
1276 	} else if (res != 0) {
1277 		p2p_dbg(p2p, "Failed to start p2p_scan");
1278 		p2p_set_state(p2p, P2P_IDLE);
1279 		eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1280 	}
1281 
1282 	return res;
1283 }
1284 
1285 
1286 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1287 {
1288 	p2p_dbg(p2p, "Stopping find");
1289 	eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1290 	p2p_clear_timeout(p2p);
1291 	if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND)
1292 		p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
1293 
1294 	p2p->p2ps_seek_count = 0;
1295 
1296 	p2p_set_state(p2p, P2P_IDLE);
1297 	p2p_free_req_dev_types(p2p);
1298 	p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1299 	if (p2p->go_neg_peer)
1300 		p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
1301 	p2p->go_neg_peer = NULL;
1302 	p2p->sd_peer = NULL;
1303 	p2p->invite_peer = NULL;
1304 	p2p_stop_listen_for_freq(p2p, freq);
1305 	p2p->send_action_in_progress = 0;
1306 }
1307 
1308 
1309 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1310 {
1311 	if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1312 		p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response");
1313 		return;
1314 	}
1315 	if (p2p->in_listen) {
1316 		p2p->in_listen = 0;
1317 		p2p_clear_timeout(p2p);
1318 	}
1319 	if (p2p->drv_in_listen) {
1320 		/*
1321 		 * The driver may not deliver callback to p2p_listen_end()
1322 		 * when the operation gets canceled, so clear the internal
1323 		 * variable that is tracking driver state.
1324 		 */
1325 		p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen);
1326 		p2p->drv_in_listen = 0;
1327 	}
1328 	p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1329 }
1330 
1331 
1332 void p2p_stop_listen(struct p2p_data *p2p)
1333 {
1334 	if (p2p->state != P2P_LISTEN_ONLY) {
1335 		p2p_dbg(p2p, "Skip stop_listen since not in listen_only state.");
1336 		return;
1337 	}
1338 
1339 	p2p_stop_listen_for_freq(p2p, 0);
1340 	p2p_set_state(p2p, P2P_IDLE);
1341 }
1342 
1343 
1344 void p2p_stop_find(struct p2p_data *p2p)
1345 {
1346 	p2p->pending_listen_freq = 0;
1347 	p2p_stop_find_for_freq(p2p, 0);
1348 }
1349 
1350 
1351 static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1352 				    unsigned int force_freq,
1353 				    unsigned int pref_freq, int go)
1354 {
1355 	u8 op_class, op_channel;
1356 	unsigned int freq = force_freq ? force_freq : pref_freq;
1357 
1358 	p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d",
1359 		force_freq, pref_freq, go);
1360 	if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) {
1361 		p2p_dbg(p2p, "Unsupported frequency %u MHz", freq);
1362 		return -1;
1363 	}
1364 
1365 	if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) &&
1366 	    (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class,
1367 					  op_channel))) {
1368 		p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P",
1369 			freq, op_class, op_channel);
1370 		return -1;
1371 	}
1372 
1373 	p2p->op_reg_class = op_class;
1374 	p2p->op_channel = op_channel;
1375 
1376 	if (force_freq) {
1377 		p2p->channels.reg_classes = 1;
1378 		p2p->channels.reg_class[0].channels = 1;
1379 		p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1380 		p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1381 	} else {
1382 		os_memcpy(&p2p->channels, &p2p->cfg->channels,
1383 			  sizeof(struct p2p_channels));
1384 	}
1385 
1386 	return 0;
1387 }
1388 
1389 
1390 static void p2p_prepare_channel_best(struct p2p_data *p2p)
1391 {
1392 	u8 op_class, op_channel;
1393 	const int op_classes_5ghz[] = { 124, 125, 115, 0 };
1394 	const int op_classes_ht40[] = { 126, 127, 116, 117, 0 };
1395 	const int op_classes_vht[] = { 128, 0 };
1396 
1397 	p2p_dbg(p2p, "Prepare channel best");
1398 
1399 	if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1400 	    p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1401 	    p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1402 	    == 0) {
1403 		p2p_dbg(p2p, "Select best overall channel as operating channel preference");
1404 		p2p->op_reg_class = op_class;
1405 		p2p->op_channel = op_channel;
1406 	} else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1407 		   p2p_supported_freq(p2p, p2p->best_freq_5) &&
1408 		   p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1409 		   == 0) {
1410 		p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
1411 		p2p->op_reg_class = op_class;
1412 		p2p->op_channel = op_channel;
1413 	} else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1414 		   p2p_supported_freq(p2p, p2p->best_freq_24) &&
1415 		   p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1416 				       &op_channel) == 0) {
1417 		p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
1418 		p2p->op_reg_class = op_class;
1419 		p2p->op_channel = op_channel;
1420 	} else if (p2p->cfg->num_pref_chan > 0 &&
1421 		   p2p_channels_includes(&p2p->cfg->channels,
1422 					 p2p->cfg->pref_chan[0].op_class,
1423 					 p2p->cfg->pref_chan[0].chan)) {
1424 		p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference");
1425 		p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class;
1426 		p2p->op_channel = p2p->cfg->pref_chan[0].chan;
1427 	} else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht,
1428 				      &p2p->op_reg_class, &p2p->op_channel) ==
1429 		   0) {
1430 		p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference",
1431 			p2p->op_reg_class, p2p->op_channel);
1432 	} else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40,
1433 				      &p2p->op_reg_class, &p2p->op_channel) ==
1434 		   0) {
1435 		p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference",
1436 			p2p->op_reg_class, p2p->op_channel);
1437 	} else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz,
1438 				      &p2p->op_reg_class, &p2p->op_channel) ==
1439 		   0) {
1440 		p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference",
1441 			p2p->op_reg_class, p2p->op_channel);
1442 	} else if (p2p_channels_includes(&p2p->cfg->channels,
1443 					 p2p->cfg->op_reg_class,
1444 					 p2p->cfg->op_channel)) {
1445 		p2p_dbg(p2p, "Select pre-configured channel as operating channel preference");
1446 		p2p->op_reg_class = p2p->cfg->op_reg_class;
1447 		p2p->op_channel = p2p->cfg->op_channel;
1448 	} else if (p2p_channel_random_social(&p2p->cfg->channels,
1449 					     &p2p->op_reg_class,
1450 					     &p2p->op_channel) == 0) {
1451 		p2p_dbg(p2p, "Select random available social channel (op_class %u channel %u) as operating channel preference",
1452 			p2p->op_reg_class, p2p->op_channel);
1453 	} else {
1454 		/* Select any random available channel from the first available
1455 		 * operating class */
1456 		p2p_channel_select(&p2p->cfg->channels, NULL,
1457 				   &p2p->op_reg_class,
1458 				   &p2p->op_channel);
1459 		p2p_dbg(p2p, "Select random available channel %d from operating class %d as operating channel preference",
1460 			p2p->op_channel, p2p->op_reg_class);
1461 	}
1462 
1463 	os_memcpy(&p2p->channels, &p2p->cfg->channels,
1464 		  sizeof(struct p2p_channels));
1465 }
1466 
1467 
1468 /**
1469  * p2p_prepare_channel - Select operating channel for GO Negotiation or P2PS PD
1470  * @p2p: P2P module context from p2p_init()
1471  * @dev: Selected peer device
1472  * @force_freq: Forced frequency in MHz or 0 if not forced
1473  * @pref_freq: Preferred frequency in MHz or 0 if no preference
1474  * @go: Whether the local end will be forced to be GO
1475  * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1476  *
1477  * This function is used to do initial operating channel selection for GO
1478  * Negotiation prior to having received peer information or for P2PS PD
1479  * signalling. The selected channel may be further optimized in
1480  * p2p_reselect_channel() once the peer information is available.
1481  */
1482 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
1483 			unsigned int force_freq, unsigned int pref_freq, int go)
1484 {
1485 	p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d",
1486 		force_freq, pref_freq, go);
1487 	if (force_freq || pref_freq) {
1488 		if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) <
1489 		    0)
1490 			return -1;
1491 	} else {
1492 		p2p_prepare_channel_best(p2p);
1493 	}
1494 	p2p_channels_dump(p2p, "prepared channels", &p2p->channels);
1495 	if (go)
1496 		p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq);
1497 	else if (!force_freq)
1498 		p2p_channels_union_inplace(&p2p->channels,
1499 					   &p2p->cfg->cli_channels);
1500 	p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels);
1501 
1502 	p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
1503 		p2p->op_reg_class, p2p->op_channel,
1504 		force_freq ? " (forced)" : "");
1505 
1506 	if (force_freq)
1507 		dev->flags |= P2P_DEV_FORCE_FREQ;
1508 	else
1509 		dev->flags &= ~P2P_DEV_FORCE_FREQ;
1510 
1511 	return 0;
1512 }
1513 
1514 
1515 static void p2p_set_dev_persistent(struct p2p_device *dev,
1516 				   int persistent_group)
1517 {
1518 	switch (persistent_group) {
1519 	case 0:
1520 		dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1521 				P2P_DEV_PREFER_PERSISTENT_RECONN);
1522 		break;
1523 	case 1:
1524 		dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1525 		dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1526 		break;
1527 	case 2:
1528 		dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1529 			P2P_DEV_PREFER_PERSISTENT_RECONN;
1530 		break;
1531 	}
1532 }
1533 
1534 
1535 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1536 		enum p2p_wps_method wps_method,
1537 		int go_intent, const u8 *own_interface_addr,
1538 		unsigned int force_freq, int persistent_group,
1539 		const u8 *force_ssid, size_t force_ssid_len,
1540 		int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id)
1541 {
1542 	struct p2p_device *dev;
1543 
1544 	p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
1545 		"  GO Intent=%d  Intended Interface Address=" MACSTR
1546 		" wps_method=%d persistent_group=%d pd_before_go_neg=%d "
1547 		"oob_pw_id=%u",
1548 		MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1549 		wps_method, persistent_group, pd_before_go_neg, oob_pw_id);
1550 
1551 	dev = p2p_get_device(p2p, peer_addr);
1552 	if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1553 		p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
1554 			MAC2STR(peer_addr));
1555 		return -1;
1556 	}
1557 
1558 	if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq,
1559 				go_intent == 15) < 0)
1560 		return -1;
1561 
1562 	if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1563 		if (!(dev->info.dev_capab &
1564 		      P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1565 			p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1566 				" that is in a group and is not discoverable",
1567 				MAC2STR(peer_addr));
1568 			return -1;
1569 		}
1570 		if (dev->oper_freq <= 0) {
1571 			p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1572 				" with incomplete information",
1573 				MAC2STR(peer_addr));
1574 			return -1;
1575 		}
1576 
1577 		/*
1578 		 * First, try to connect directly. If the peer does not
1579 		 * acknowledge frames, assume it is sleeping and use device
1580 		 * discoverability via the GO at that point.
1581 		 */
1582 	}
1583 
1584 	p2p->ssid_set = 0;
1585 	if (force_ssid) {
1586 		wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1587 				  force_ssid, force_ssid_len);
1588 		os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1589 		p2p->ssid_len = force_ssid_len;
1590 		p2p->ssid_set = 1;
1591 	}
1592 
1593 	dev->flags &= ~P2P_DEV_NOT_YET_READY;
1594 	dev->flags &= ~P2P_DEV_USER_REJECTED;
1595 	dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1596 	dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1597 	if (pd_before_go_neg)
1598 		dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
1599 	else {
1600 		dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
1601 		/*
1602 		 * Assign dialog token and tie breaker here to use the same
1603 		 * values in each retry within the same GO Negotiation exchange.
1604 		 */
1605 		dev->dialog_token++;
1606 		if (dev->dialog_token == 0)
1607 			dev->dialog_token = 1;
1608 		dev->tie_breaker = p2p->next_tie_breaker;
1609 		p2p->next_tie_breaker = !p2p->next_tie_breaker;
1610 	}
1611 	dev->connect_reqs = 0;
1612 	dev->go_neg_req_sent = 0;
1613 	dev->go_state = UNKNOWN_GO;
1614 	p2p_set_dev_persistent(dev, persistent_group);
1615 	p2p->go_intent = go_intent;
1616 	os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1617 
1618 	if (p2p->state != P2P_IDLE)
1619 		p2p_stop_find(p2p);
1620 
1621 	if (p2p->after_scan_tx) {
1622 		/*
1623 		 * We need to drop the pending frame to avoid issues with the
1624 		 * new GO Negotiation, e.g., when the pending frame was from a
1625 		 * previous attempt at starting a GO Negotiation.
1626 		 */
1627 		p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion");
1628 		os_free(p2p->after_scan_tx);
1629 		p2p->after_scan_tx = NULL;
1630 	}
1631 
1632 	dev->wps_method = wps_method;
1633 	dev->oob_pw_id = oob_pw_id;
1634 	dev->status = P2P_SC_SUCCESS;
1635 
1636 	if (p2p->p2p_scan_running) {
1637 		p2p_dbg(p2p, "p2p_scan running - delay connect send");
1638 		p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1639 		os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1640 		return 0;
1641 	}
1642 	p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1643 
1644 	return p2p_connect_send(p2p, dev);
1645 }
1646 
1647 
1648 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1649 		  enum p2p_wps_method wps_method,
1650 		  int go_intent, const u8 *own_interface_addr,
1651 		  unsigned int force_freq, int persistent_group,
1652 		  const u8 *force_ssid, size_t force_ssid_len,
1653 		  unsigned int pref_freq, u16 oob_pw_id)
1654 {
1655 	struct p2p_device *dev;
1656 
1657 	p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
1658 		"  GO Intent=%d  Intended Interface Address=" MACSTR
1659 		" wps_method=%d  persistent_group=%d oob_pw_id=%u",
1660 		MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1661 		wps_method, persistent_group, oob_pw_id);
1662 
1663 	dev = p2p_get_device(p2p, peer_addr);
1664 	if (dev == NULL) {
1665 		p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
1666 			MAC2STR(peer_addr));
1667 		return -1;
1668 	}
1669 
1670 	if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent ==
1671 				15) < 0)
1672 		return -1;
1673 
1674 	p2p->ssid_set = 0;
1675 	if (force_ssid) {
1676 		wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1677 				  force_ssid, force_ssid_len);
1678 		os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1679 		p2p->ssid_len = force_ssid_len;
1680 		p2p->ssid_set = 1;
1681 	}
1682 
1683 	dev->flags &= ~P2P_DEV_NOT_YET_READY;
1684 	dev->flags &= ~P2P_DEV_USER_REJECTED;
1685 	dev->go_neg_req_sent = 0;
1686 	dev->go_state = UNKNOWN_GO;
1687 	p2p_set_dev_persistent(dev, persistent_group);
1688 	p2p->go_intent = go_intent;
1689 	os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1690 
1691 	dev->wps_method = wps_method;
1692 	dev->oob_pw_id = oob_pw_id;
1693 	dev->status = P2P_SC_SUCCESS;
1694 
1695 	return 0;
1696 }
1697 
1698 
1699 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1700 		      struct p2p_device *dev, struct p2p_message *msg)
1701 {
1702 	os_get_reltime(&dev->last_seen);
1703 
1704 	p2p_copy_wps_info(p2p, dev, 0, msg);
1705 
1706 	if (msg->listen_channel) {
1707 		int freq;
1708 		freq = p2p_channel_to_freq(msg->listen_channel[3],
1709 					   msg->listen_channel[4]);
1710 		if (freq < 0) {
1711 			p2p_dbg(p2p, "Unknown peer Listen channel: "
1712 				"country=%c%c(0x%02x) reg_class=%u channel=%u",
1713 				msg->listen_channel[0],
1714 				msg->listen_channel[1],
1715 				msg->listen_channel[2],
1716 				msg->listen_channel[3],
1717 				msg->listen_channel[4]);
1718 		} else {
1719 			p2p_dbg(p2p, "Update peer " MACSTR
1720 				" Listen channel: %u -> %u MHz",
1721 				MAC2STR(dev->info.p2p_device_addr),
1722 				dev->listen_freq, freq);
1723 			dev->listen_freq = freq;
1724 		}
1725 	}
1726 
1727 	if (msg->wfd_subelems) {
1728 		wpabuf_free(dev->info.wfd_subelems);
1729 		dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1730 	}
1731 
1732 	if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1733 		dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1734 		p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
1735 	} else {
1736 		p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
1737 			MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1738 			"listen_freq=%d",
1739 			MAC2STR(dev->info.p2p_device_addr),
1740 			dev->info.dev_capab, dev->info.group_capab,
1741 			dev->info.device_name, dev->listen_freq);
1742 	}
1743 
1744 	dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1745 
1746 	if (dev->flags & P2P_DEV_USER_REJECTED) {
1747 		p2p_dbg(p2p, "Do not report rejected device");
1748 		return;
1749 	}
1750 
1751 	p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1752 			    !(dev->flags & P2P_DEV_REPORTED_ONCE));
1753 	dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1754 }
1755 
1756 
1757 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1758 {
1759 	os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1760 	p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1761 	os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1762 		  p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1763 	*ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1764 }
1765 
1766 
1767 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1768 {
1769 	if (p2p->ssid_set) {
1770 		os_memcpy(params->ssid, p2p->ssid, p2p->ssid_len);
1771 		params->ssid_len = p2p->ssid_len;
1772 	} else {
1773 		p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1774 	}
1775 	p2p->ssid_set = 0;
1776 
1777 	p2p_random(params->passphrase, p2p->cfg->passphrase_len);
1778 	return 0;
1779 }
1780 
1781 
1782 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1783 {
1784 	struct p2p_go_neg_results res;
1785 	int go = peer->go_state == LOCAL_GO;
1786 	struct p2p_channels intersection;
1787 
1788 	p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1789 		MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
1790 
1791 	os_memset(&res, 0, sizeof(res));
1792 	res.role_go = go;
1793 	os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1794 	os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1795 	res.wps_method = peer->wps_method;
1796 	if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1797 		if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1798 			res.persistent_group = 2;
1799 		else
1800 			res.persistent_group = 1;
1801 	}
1802 
1803 	if (go) {
1804 		/* Setup AP mode for WPS provisioning */
1805 		res.freq = p2p_channel_to_freq(p2p->op_reg_class,
1806 					       p2p->op_channel);
1807 		os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1808 		res.ssid_len = p2p->ssid_len;
1809 		p2p_random(res.passphrase, p2p->cfg->passphrase_len);
1810 	} else {
1811 		res.freq = peer->oper_freq;
1812 		if (p2p->ssid_len) {
1813 			os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1814 			res.ssid_len = p2p->ssid_len;
1815 		}
1816 	}
1817 
1818 	p2p_channels_dump(p2p, "own channels", &p2p->channels);
1819 	p2p_channels_dump(p2p, "peer channels", &peer->channels);
1820 	p2p_channels_intersect(&p2p->channels, &peer->channels,
1821 			       &intersection);
1822 	if (go) {
1823 		p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq);
1824 		p2p_channels_dump(p2p, "intersection after no-GO removal",
1825 				  &intersection);
1826 	}
1827 
1828 	p2p_channels_to_freqs(&intersection, res.freq_list,
1829 			      P2P_MAX_CHANNELS);
1830 
1831 	res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1832 
1833 	p2p_clear_timeout(p2p);
1834 	p2p->ssid_set = 0;
1835 	peer->go_neg_req_sent = 0;
1836 	peer->wps_method = WPS_NOT_READY;
1837 	peer->oob_pw_id = 0;
1838 	wpabuf_free(peer->go_neg_conf);
1839 	peer->go_neg_conf = NULL;
1840 
1841 	p2p_set_state(p2p, P2P_PROVISIONING);
1842 	p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1843 }
1844 
1845 
1846 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1847 			      const u8 *data, size_t len, int rx_freq)
1848 {
1849 	p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
1850 	wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1851 
1852 	if (len < 1)
1853 		return;
1854 
1855 	switch (data[0]) {
1856 	case P2P_GO_NEG_REQ:
1857 		p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1858 		break;
1859 	case P2P_GO_NEG_RESP:
1860 		p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1861 		break;
1862 	case P2P_GO_NEG_CONF:
1863 		p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1864 		break;
1865 	case P2P_INVITATION_REQ:
1866 		p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1867 					   rx_freq);
1868 		break;
1869 	case P2P_INVITATION_RESP:
1870 		p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1871 		break;
1872 	case P2P_PROV_DISC_REQ:
1873 		p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1874 		break;
1875 	case P2P_PROV_DISC_RESP:
1876 		p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1877 		break;
1878 	case P2P_DEV_DISC_REQ:
1879 		p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1880 		break;
1881 	case P2P_DEV_DISC_RESP:
1882 		p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1883 		break;
1884 	default:
1885 		p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
1886 			data[0]);
1887 		break;
1888 	}
1889 }
1890 
1891 
1892 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1893 				 const u8 *sa, const u8 *bssid, const u8 *data,
1894 				 size_t len, int freq)
1895 {
1896 	if (len < 1)
1897 		return;
1898 
1899 	switch (data[0]) {
1900 	case WLAN_PA_VENDOR_SPECIFIC:
1901 		data++;
1902 		len--;
1903 		if (len < 4)
1904 			return;
1905 		if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1906 			return;
1907 
1908 		data += 4;
1909 		len -= 4;
1910 
1911 		p2p_rx_p2p_action(p2p, sa, data, len, freq);
1912 		break;
1913 	case WLAN_PA_GAS_INITIAL_REQ:
1914 		p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1915 		break;
1916 	case WLAN_PA_GAS_INITIAL_RESP:
1917 		p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1918 		break;
1919 	case WLAN_PA_GAS_COMEBACK_REQ:
1920 		p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1921 		break;
1922 	case WLAN_PA_GAS_COMEBACK_RESP:
1923 		p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1924 		break;
1925 	}
1926 }
1927 
1928 
1929 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1930 		   const u8 *bssid, u8 category,
1931 		   const u8 *data, size_t len, int freq)
1932 {
1933 	if (category == WLAN_ACTION_PUBLIC) {
1934 		p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1935 		return;
1936 	}
1937 
1938 	if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1939 		return;
1940 
1941 	if (len < 4)
1942 		return;
1943 
1944 	if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1945 		return;
1946 	data += 4;
1947 	len -= 4;
1948 
1949 	/* P2P action frame */
1950 	p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
1951 	wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1952 
1953 	if (len < 1)
1954 		return;
1955 	switch (data[0]) {
1956 	case P2P_NOA:
1957 		p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
1958 		/* TODO */
1959 		break;
1960 	case P2P_PRESENCE_REQ:
1961 		p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1962 		break;
1963 	case P2P_PRESENCE_RESP:
1964 		p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1965 		break;
1966 	case P2P_GO_DISC_REQ:
1967 		p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1968 		break;
1969 	default:
1970 		p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
1971 		break;
1972 	}
1973 }
1974 
1975 
1976 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1977 {
1978 	struct p2p_data *p2p = eloop_ctx;
1979 	if (p2p->go_neg_peer == NULL)
1980 		return;
1981 	if (p2p->pending_listen_freq) {
1982 		p2p_dbg(p2p, "Clear pending_listen_freq for p2p_go_neg_start");
1983 		p2p->pending_listen_freq = 0;
1984 	}
1985 	p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1986 	p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1987 	/*
1988 	 * Set new timeout to make sure a previously set one does not expire
1989 	 * too quickly while waiting for the GO Negotiation to complete.
1990 	 */
1991 	p2p_set_timeout(p2p, 0, 500000);
1992 	p2p_connect_send(p2p, p2p->go_neg_peer);
1993 }
1994 
1995 
1996 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1997 {
1998 	struct p2p_data *p2p = eloop_ctx;
1999 	if (p2p->invite_peer == NULL)
2000 		return;
2001 	if (p2p->pending_listen_freq) {
2002 		p2p_dbg(p2p, "Clear pending_listen_freq for p2p_invite_start");
2003 		p2p->pending_listen_freq = 0;
2004 	}
2005 	p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
2006 	p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr,
2007 			p2p->invite_dev_pw_id);
2008 }
2009 
2010 
2011 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
2012 				       const u8 *ie, size_t ie_len)
2013 {
2014 	struct p2p_message msg;
2015 	struct p2p_device *dev;
2016 
2017 	os_memset(&msg, 0, sizeof(msg));
2018 	if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
2019 	{
2020 		p2p_parse_free(&msg);
2021 		return; /* not a P2P probe */
2022 	}
2023 
2024 	if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
2025 	    os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
2026 	    != 0) {
2027 		/* The Probe Request is not part of P2P Device Discovery. It is
2028 		 * not known whether the source address of the frame is the P2P
2029 		 * Device Address or P2P Interface Address. Do not add a new
2030 		 * peer entry based on this frames.
2031 		 */
2032 		p2p_parse_free(&msg);
2033 		return;
2034 	}
2035 
2036 	dev = p2p_get_device(p2p, addr);
2037 	if (dev) {
2038 		if (msg.listen_channel) {
2039 			int freq;
2040 
2041 			if (dev->country[0] == 0)
2042 				os_memcpy(dev->country, msg.listen_channel, 3);
2043 
2044 			freq = p2p_channel_to_freq(msg.listen_channel[3],
2045 						   msg.listen_channel[4]);
2046 
2047 			if (freq > 0 && dev->listen_freq != freq) {
2048 				p2p_dbg(p2p,
2049 					"Updated peer " MACSTR " Listen channel (Probe Request): %d -> %d MHz",
2050 					MAC2STR(addr), dev->listen_freq, freq);
2051 				dev->listen_freq = freq;
2052 			}
2053 		}
2054 
2055 		os_get_reltime(&dev->last_seen);
2056 		p2p_parse_free(&msg);
2057 		return; /* already known */
2058 	}
2059 
2060 	dev = p2p_create_device(p2p, addr);
2061 	if (dev == NULL) {
2062 		p2p_parse_free(&msg);
2063 		return;
2064 	}
2065 
2066 	os_get_reltime(&dev->last_seen);
2067 	dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
2068 
2069 	if (msg.listen_channel) {
2070 		os_memcpy(dev->country, msg.listen_channel, 3);
2071 		dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
2072 						       msg.listen_channel[4]);
2073 	}
2074 
2075 	p2p_copy_wps_info(p2p, dev, 1, &msg);
2076 
2077 	if (msg.wfd_subelems) {
2078 		wpabuf_free(dev->info.wfd_subelems);
2079 		dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
2080 	}
2081 
2082 	p2p_parse_free(&msg);
2083 
2084 	p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
2085 		" dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
2086 		MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
2087 		dev->info.group_capab, dev->info.device_name,
2088 		dev->listen_freq);
2089 }
2090 
2091 
2092 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
2093 						const u8 *addr,
2094 						struct p2p_message *msg)
2095 {
2096 	struct p2p_device *dev;
2097 
2098 	dev = p2p_get_device(p2p, addr);
2099 	if (dev) {
2100 		os_get_reltime(&dev->last_seen);
2101 		return dev; /* already known */
2102 	}
2103 
2104 	dev = p2p_create_device(p2p, addr);
2105 	if (dev == NULL)
2106 		return NULL;
2107 
2108 	p2p_add_dev_info(p2p, addr, dev, msg);
2109 
2110 	return dev;
2111 }
2112 
2113 
2114 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
2115 {
2116 	if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
2117 		return 1;
2118 	if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
2119 	    WPA_GET_BE32(&req_dev_type[2]) == 0 &&
2120 	    WPA_GET_BE16(&req_dev_type[6]) == 0)
2121 		return 1; /* Category match with wildcard OUI/sub-category */
2122 	return 0;
2123 }
2124 
2125 
2126 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
2127 			size_t num_req_dev_type)
2128 {
2129 	size_t i;
2130 	for (i = 0; i < num_req_dev_type; i++) {
2131 		if (dev_type_match(dev_type, req_dev_type[i]))
2132 			return 1;
2133 	}
2134 	return 0;
2135 }
2136 
2137 
2138 /**
2139  * p2p_match_dev_type - Match local device type with requested type
2140  * @p2p: P2P module context from p2p_init()
2141  * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
2142  * Returns: 1 on match, 0 on mismatch
2143  *
2144  * This function can be used to match the Requested Device Type attribute in
2145  * WPS IE with the local device types for deciding whether to reply to a Probe
2146  * Request frame.
2147  */
2148 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
2149 {
2150 	struct wps_parse_attr attr;
2151 	size_t i;
2152 
2153 	if (wps_parse_msg(wps, &attr))
2154 		return 1; /* assume no Requested Device Type attributes */
2155 
2156 	if (attr.num_req_dev_type == 0)
2157 		return 1; /* no Requested Device Type attributes -> match */
2158 
2159 	if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
2160 				attr.num_req_dev_type))
2161 		return 1; /* Own Primary Device Type matches */
2162 
2163 	for (i = 0; i < p2p->cfg->num_sec_dev_types; i++) {
2164 		if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
2165 					attr.req_dev_type,
2166 					attr.num_req_dev_type))
2167 			return 1; /* Own Secondary Device Type matches */
2168 	}
2169 
2170 	/* No matching device type found */
2171 	return 0;
2172 }
2173 
2174 
2175 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p,
2176 					 const u8 *query_hash,
2177 					 u8 query_count)
2178 {
2179 	struct wpabuf *buf;
2180 	u8 *len;
2181 	int pw_id = -1;
2182 	size_t extra = 0;
2183 
2184 #ifdef CONFIG_WIFI_DISPLAY
2185 	if (p2p->wfd_ie_probe_resp)
2186 		extra = wpabuf_len(p2p->wfd_ie_probe_resp);
2187 #endif /* CONFIG_WIFI_DISPLAY */
2188 
2189 	if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2190 		extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2191 
2192 	if (query_count)
2193 		extra += MAX_SVC_ADV_IE_LEN;
2194 
2195 	buf = wpabuf_alloc(1000 + extra);
2196 	if (buf == NULL)
2197 		return NULL;
2198 
2199 	if (p2p->go_neg_peer) {
2200 		/* Advertise immediate availability of WPS credential */
2201 		pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
2202 	}
2203 
2204 	if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) {
2205 		p2p_dbg(p2p, "Failed to build WPS IE for Probe Response");
2206 		wpabuf_free(buf);
2207 		return NULL;
2208 	}
2209 
2210 #ifdef CONFIG_WIFI_DISPLAY
2211 	if (p2p->wfd_ie_probe_resp)
2212 		wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
2213 #endif /* CONFIG_WIFI_DISPLAY */
2214 
2215 	if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2216 		wpabuf_put_buf(buf,
2217 			       p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2218 
2219 	/* P2P IE */
2220 	len = p2p_buf_add_ie_hdr(buf);
2221 	p2p_buf_add_capability(buf, p2p->dev_capab &
2222 			       ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2223 	if (p2p->ext_listen_interval)
2224 		p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
2225 					      p2p->ext_listen_interval);
2226 	p2p_buf_add_device_info(buf, p2p, NULL);
2227 	p2p_buf_update_ie_hdr(buf, len);
2228 
2229 	if (query_count) {
2230 		p2p_buf_add_service_instance(buf, p2p, query_count, query_hash,
2231 					     p2p->p2ps_adv_list);
2232 	}
2233 
2234 	return buf;
2235 }
2236 
2237 static int p2p_build_probe_resp_buf(struct p2p_data *p2p, struct wpabuf *buf,
2238 				    struct wpabuf *ies,
2239 				    const u8 *addr, int rx_freq)
2240 {
2241 	struct ieee80211_mgmt *resp;
2242 	u8 channel, op_class;
2243 
2244 	resp = wpabuf_put(buf, offsetof(struct ieee80211_mgmt,
2245 					u.probe_resp.variable));
2246 
2247 	resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2248 					   (WLAN_FC_STYPE_PROBE_RESP << 4));
2249 	os_memcpy(resp->da, addr, ETH_ALEN);
2250 	os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2251 	os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2252 	resp->u.probe_resp.beacon_int = host_to_le16(100);
2253 	/* hardware or low-level driver will setup seq_ctrl and timestamp */
2254 	resp->u.probe_resp.capab_info =
2255 	    host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2256 		     WLAN_CAPABILITY_PRIVACY |
2257 		     WLAN_CAPABILITY_SHORT_SLOT_TIME);
2258 
2259 	wpabuf_put_u8(buf, WLAN_EID_SSID);
2260 	wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2261 	wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2262 
2263 	wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2264 	wpabuf_put_u8(buf, 8);
2265 	wpabuf_put_u8(buf, (60 / 5) | 0x80);
2266 	wpabuf_put_u8(buf, 90 / 5);
2267 	wpabuf_put_u8(buf, (120 / 5) | 0x80);
2268 	wpabuf_put_u8(buf, 180 / 5);
2269 	wpabuf_put_u8(buf, (240 / 5) | 0x80);
2270 	wpabuf_put_u8(buf, 360 / 5);
2271 	wpabuf_put_u8(buf, 480 / 5);
2272 	wpabuf_put_u8(buf, 540 / 5);
2273 
2274 	if (!rx_freq) {
2275 		channel = p2p->cfg->channel;
2276 	} else if (p2p_freq_to_channel(rx_freq, &op_class, &channel)) {
2277 		p2p_err(p2p, "Failed to convert freq to channel");
2278 		return -1;
2279 	}
2280 
2281 	wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2282 	wpabuf_put_u8(buf, 1);
2283 	wpabuf_put_u8(buf, channel);
2284 
2285 	wpabuf_put_buf(buf, ies);
2286 
2287 	return 0;
2288 }
2289 
2290 static int p2p_service_find_asp(struct p2p_data *p2p, const u8 *hash)
2291 {
2292 	struct p2ps_advertisement *adv_data;
2293 	int any_wfa;
2294 
2295 	p2p_dbg(p2p, "ASP find - ASP list: %p", p2p->p2ps_adv_list);
2296 
2297 	/* Wildcard org.wi-fi.wfds matches any WFA spec defined service */
2298 	any_wfa = os_memcmp(hash, p2p->wild_card_hash, P2PS_HASH_LEN) == 0;
2299 
2300 	adv_data = p2p->p2ps_adv_list;
2301 	while (adv_data) {
2302 		if (os_memcmp(hash, adv_data->hash, P2PS_HASH_LEN) == 0)
2303 			return 1; /* exact hash match */
2304 		if (any_wfa &&
2305 		    os_strncmp(adv_data->svc_name, P2PS_WILD_HASH_STR,
2306 			       os_strlen(P2PS_WILD_HASH_STR)) == 0)
2307 			return 1; /* WFA service match */
2308 		adv_data = adv_data->next;
2309 	}
2310 
2311 	return 0;
2312 }
2313 
2314 
2315 static enum p2p_probe_req_status
2316 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2317 		const u8 *bssid, const u8 *ie, size_t ie_len,
2318 		unsigned int rx_freq)
2319 {
2320 	struct ieee802_11_elems elems;
2321 	struct wpabuf *buf;
2322 	struct p2p_message msg;
2323 	struct wpabuf *ies;
2324 
2325 	if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
2326 	    ParseFailed) {
2327 		/* Ignore invalid Probe Request frames */
2328 		p2p_dbg(p2p, "Could not parse Probe Request frame - ignore it");
2329 		return P2P_PREQ_MALFORMED;
2330 	}
2331 
2332 	if (elems.p2p == NULL) {
2333 		/* not a P2P probe - ignore it */
2334 		p2p_dbg(p2p, "Not a P2P probe - ignore it");
2335 		return P2P_PREQ_NOT_P2P;
2336 	}
2337 
2338 	if (dst && !is_broadcast_ether_addr(dst) &&
2339 	    os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2340 		/* Not sent to the broadcast address or our P2P Device Address
2341 		 */
2342 		p2p_dbg(p2p, "Probe Req DA " MACSTR " not ours - ignore it",
2343 			MAC2STR(dst));
2344 		return P2P_PREQ_NOT_PROCESSED;
2345 	}
2346 
2347 	if (bssid && !is_broadcast_ether_addr(bssid)) {
2348 		/* Not sent to the Wildcard BSSID */
2349 		p2p_dbg(p2p, "Probe Req BSSID " MACSTR " not wildcard - ignore it",
2350 			MAC2STR(bssid));
2351 		return P2P_PREQ_NOT_PROCESSED;
2352 	}
2353 
2354 	if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2355 	    os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2356 	    0) {
2357 		/* not using P2P Wildcard SSID - ignore */
2358 		p2p_dbg(p2p, "Probe Req not using P2P Wildcard SSID - ignore it");
2359 		return P2P_PREQ_NOT_PROCESSED;
2360 	}
2361 
2362 	if (supp_rates_11b_only(&elems)) {
2363 		/* Indicates support for 11b rates only */
2364 		p2p_dbg(p2p, "Probe Req with 11b rates only supported - ignore it");
2365 		return P2P_PREQ_NOT_P2P;
2366 	}
2367 
2368 	os_memset(&msg, 0, sizeof(msg));
2369 	if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2370 		/* Could not parse P2P attributes */
2371 		p2p_dbg(p2p, "Could not parse P2P attributes in Probe Req - ignore it");
2372 		return P2P_PREQ_NOT_P2P;
2373 	}
2374 
2375 	if (msg.service_hash && msg.service_hash_count) {
2376 		const u8 *hash = msg.service_hash;
2377 		u8 i;
2378 		int p2ps_svc_found = 0;
2379 
2380 		p2p_dbg(p2p, "in_listen=%d drv_in_listen=%d when received P2PS Probe Request at %u MHz; own Listen channel %u, pending listen freq %u MHz",
2381 			p2p->in_listen, p2p->drv_in_listen, rx_freq,
2382 			p2p->cfg->channel, p2p->pending_listen_freq);
2383 
2384 		if (!p2p->in_listen && !p2p->drv_in_listen &&
2385 		    p2p->pending_listen_freq && rx_freq &&
2386 		    rx_freq != p2p->pending_listen_freq) {
2387 			p2p_dbg(p2p, "Do not reply to Probe Request frame that was received on %u MHz while waiting to start Listen state on %u MHz",
2388 				rx_freq, p2p->pending_listen_freq);
2389 			p2p_parse_free(&msg);
2390 			return P2P_PREQ_NOT_LISTEN;
2391 		}
2392 
2393 		for (i = 0; i < msg.service_hash_count; i++) {
2394 			if (p2p_service_find_asp(p2p, hash)) {
2395 				p2p_dbg(p2p, "Service Hash match found: "
2396 					MACSTR, MAC2STR(hash));
2397 				p2ps_svc_found = 1;
2398 				break;
2399 			}
2400 			hash += P2PS_HASH_LEN;
2401 		}
2402 
2403 		/* Probed hash unknown */
2404 		if (!p2ps_svc_found) {
2405 			p2p_dbg(p2p, "No Service Hash match found");
2406 			p2p_parse_free(&msg);
2407 			return P2P_PREQ_NOT_PROCESSED;
2408 		}
2409 	} else {
2410 		/* This is not a P2PS Probe Request */
2411 		p2p_dbg(p2p, "No P2PS Hash in Probe Request");
2412 
2413 		if (!p2p->in_listen || !p2p->drv_in_listen) {
2414 			/* not in Listen state - ignore Probe Request */
2415 			p2p_dbg(p2p, "Not in Listen state (in_listen=%d drv_in_listen=%d) - ignore Probe Request",
2416 				p2p->in_listen, p2p->drv_in_listen);
2417 			p2p_parse_free(&msg);
2418 			return P2P_PREQ_NOT_LISTEN;
2419 		}
2420 	}
2421 
2422 	if (msg.device_id &&
2423 	    os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2424 		/* Device ID did not match */
2425 		p2p_dbg(p2p, "Probe Req requested Device ID " MACSTR " did not match - ignore it",
2426 			MAC2STR(msg.device_id));
2427 		p2p_parse_free(&msg);
2428 		return P2P_PREQ_NOT_PROCESSED;
2429 	}
2430 
2431 	/* Check Requested Device Type match */
2432 	if (msg.wps_attributes &&
2433 	    !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2434 		/* No match with Requested Device Type */
2435 		p2p_dbg(p2p, "Probe Req requestred Device Type did not match - ignore it");
2436 		p2p_parse_free(&msg);
2437 		return P2P_PREQ_NOT_PROCESSED;
2438 	}
2439 
2440 	if (!p2p->cfg->send_probe_resp) {
2441 		/* Response generated elsewhere */
2442 		p2p_dbg(p2p, "Probe Resp generated elsewhere - do not generate additional response");
2443 		p2p_parse_free(&msg);
2444 		return P2P_PREQ_NOT_PROCESSED;
2445 	}
2446 
2447 	p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
2448 
2449 	/*
2450 	 * We do not really have a specific BSS that this frame is advertising,
2451 	 * so build a frame that has some information in valid format. This is
2452 	 * really only used for discovery purposes, not to learn exact BSS
2453 	 * parameters.
2454 	 */
2455 	ies = p2p_build_probe_resp_ies(p2p, msg.service_hash,
2456 				       msg.service_hash_count);
2457 	p2p_parse_free(&msg);
2458 	if (ies == NULL)
2459 		return P2P_PREQ_NOT_PROCESSED;
2460 
2461 	buf = wpabuf_alloc(200 + wpabuf_len(ies));
2462 	if (buf == NULL) {
2463 		wpabuf_free(ies);
2464 		return P2P_PREQ_NOT_PROCESSED;
2465 	}
2466 
2467 	if (p2p_build_probe_resp_buf(p2p, buf, ies, addr, rx_freq)) {
2468 		wpabuf_free(ies);
2469 		wpabuf_free(buf);
2470 		return P2P_PREQ_NOT_PROCESSED;
2471 	}
2472 
2473 	wpabuf_free(ies);
2474 
2475 	p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf, rx_freq);
2476 
2477 	wpabuf_free(buf);
2478 
2479 	return P2P_PREQ_PROCESSED;
2480 }
2481 
2482 
2483 enum p2p_probe_req_status
2484 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2485 		 const u8 *bssid, const u8 *ie, size_t ie_len,
2486 		 unsigned int rx_freq, int p2p_lo_started)
2487 {
2488 	enum p2p_probe_req_status res;
2489 
2490 	p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2491 
2492 	if (p2p_lo_started) {
2493 		p2p_dbg(p2p,
2494 			"Probe Response is offloaded, do not reply Probe Request");
2495 		return P2P_PREQ_PROCESSED;
2496 	}
2497 
2498 	res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len, rx_freq);
2499 	if (res != P2P_PREQ_PROCESSED && res != P2P_PREQ_NOT_PROCESSED)
2500 		return res;
2501 
2502 	/*
2503 	 * Activate a pending GO Negotiation/Invite flow if a received Probe
2504 	 * Request frame is from an expected peer. Some devices may share the
2505 	 * same address for P2P and non-P2P STA running simultaneously. The
2506 	 * P2P_PREQ_PROCESSED and P2P_PREQ_NOT_PROCESSED p2p_reply_probe()
2507 	 * return values verified above ensure we are handling a Probe Request
2508 	 * frame from a P2P peer.
2509 	 */
2510 	if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2511 	    p2p->go_neg_peer &&
2512 	    os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2513 	    == 0 &&
2514 	    !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
2515 		/* Received a Probe Request from GO Negotiation peer */
2516 		p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
2517 		eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2518 		eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2519 		return res;
2520 	}
2521 
2522 	if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2523 	    p2p->invite_peer &&
2524 	    (p2p->invite_peer->flags & P2P_DEV_WAIT_INV_REQ_ACK) &&
2525 	    os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2526 	    == 0) {
2527 		/* Received a Probe Request from Invite peer */
2528 		p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
2529 		eloop_cancel_timeout(p2p_invite_start, p2p, NULL);
2530 		eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2531 		return res;
2532 	}
2533 
2534 	return res;
2535 }
2536 
2537 
2538 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2539 				    u8 *buf, size_t len, struct wpabuf *p2p_ie)
2540 {
2541 	struct wpabuf *tmp;
2542 	u8 *lpos;
2543 	size_t tmplen;
2544 	int res;
2545 	u8 group_capab;
2546 	struct p2p_message msg;
2547 
2548 	if (p2p_ie == NULL)
2549 		return 0; /* WLAN AP is not a P2P manager */
2550 
2551 	os_memset(&msg, 0, sizeof(msg));
2552 	if (p2p_parse_p2p_ie(p2p_ie, &msg) < 0)
2553 		return 0;
2554 
2555 	p2p_dbg(p2p, "BSS P2P manageability %s",
2556 		msg.manageability ? "enabled" : "disabled");
2557 
2558 	if (!msg.manageability)
2559 		return 0;
2560 
2561 	/*
2562 	 * (Re)Association Request - P2P IE
2563 	 * P2P Capability attribute (shall be present)
2564 	 * P2P Interface attribute (present if concurrent device and
2565 	 *	P2P Management is enabled)
2566 	 */
2567 	tmp = wpabuf_alloc(200);
2568 	if (tmp == NULL)
2569 		return -1;
2570 
2571 	lpos = p2p_buf_add_ie_hdr(tmp);
2572 	group_capab = 0;
2573 	if (p2p->num_groups > 0) {
2574 		group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2575 		if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2576 		    (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2577 		    p2p->cross_connect)
2578 			group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2579 	}
2580 	p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2581 	if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2582 	    (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2583 		p2p_buf_add_p2p_interface(tmp, p2p);
2584 	p2p_buf_update_ie_hdr(tmp, lpos);
2585 
2586 	tmplen = wpabuf_len(tmp);
2587 	if (tmplen > len)
2588 		res = -1;
2589 	else {
2590 		os_memcpy(buf, wpabuf_head(tmp), tmplen);
2591 		res = tmplen;
2592 	}
2593 	wpabuf_free(tmp);
2594 
2595 	return res;
2596 }
2597 
2598 
2599 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2600 		     size_t len, int p2p_group, struct wpabuf *p2p_ie)
2601 {
2602 	struct wpabuf *tmp;
2603 	u8 *lpos;
2604 	struct p2p_device *peer;
2605 	size_t tmplen;
2606 	int res;
2607 	size_t extra = 0;
2608 
2609 	if (!p2p_group)
2610 		return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2611 
2612 #ifdef CONFIG_WIFI_DISPLAY
2613 	if (p2p->wfd_ie_assoc_req)
2614 		extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2615 #endif /* CONFIG_WIFI_DISPLAY */
2616 
2617 	if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2618 		extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2619 
2620 	/*
2621 	 * (Re)Association Request - P2P IE
2622 	 * P2P Capability attribute (shall be present)
2623 	 * Extended Listen Timing (may be present)
2624 	 * P2P Device Info attribute (shall be present)
2625 	 */
2626 	tmp = wpabuf_alloc(200 + extra);
2627 	if (tmp == NULL)
2628 		return -1;
2629 
2630 #ifdef CONFIG_WIFI_DISPLAY
2631 	if (p2p->wfd_ie_assoc_req)
2632 		wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2633 #endif /* CONFIG_WIFI_DISPLAY */
2634 
2635 	if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2636 		wpabuf_put_buf(tmp,
2637 			       p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2638 
2639 	peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2640 
2641 	lpos = p2p_buf_add_ie_hdr(tmp);
2642 	p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2643 	if (p2p->ext_listen_interval)
2644 		p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2645 					      p2p->ext_listen_interval);
2646 	p2p_buf_add_device_info(tmp, p2p, peer);
2647 	p2p_buf_update_ie_hdr(tmp, lpos);
2648 
2649 	tmplen = wpabuf_len(tmp);
2650 	if (tmplen > len)
2651 		res = -1;
2652 	else {
2653 		os_memcpy(buf, wpabuf_head(tmp), tmplen);
2654 		res = tmplen;
2655 	}
2656 	wpabuf_free(tmp);
2657 
2658 	return res;
2659 }
2660 
2661 
2662 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2663 {
2664 	struct wpabuf *p2p_ie;
2665 	int ret;
2666 
2667 	p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2668 	if (p2p_ie == NULL)
2669 		return 0;
2670 
2671 	ret = p2p_attr_text(p2p_ie, buf, end);
2672 	wpabuf_free(p2p_ie);
2673 	return ret;
2674 }
2675 
2676 
2677 struct p2ps_advertisement *
2678 p2p_service_p2ps_id(struct p2p_data *p2p, u32 adv_id)
2679 {
2680 	struct p2ps_advertisement *adv_data;
2681 
2682 	if (!p2p)
2683 		return NULL;
2684 
2685 	adv_data = p2p->p2ps_adv_list;
2686 	while (adv_data) {
2687 		if (adv_data->id == adv_id)
2688 			return adv_data;
2689 		adv_data = adv_data->next;
2690 	}
2691 
2692 	return NULL;
2693 }
2694 
2695 
2696 int p2p_service_del_asp(struct p2p_data *p2p, u32 adv_id)
2697 {
2698 	struct p2ps_advertisement *adv_data;
2699 	struct p2ps_advertisement **prior;
2700 
2701 	if (!p2p)
2702 		return -1;
2703 
2704 	adv_data = p2p->p2ps_adv_list;
2705 	prior = &p2p->p2ps_adv_list;
2706 	while (adv_data) {
2707 		if (adv_data->id == adv_id) {
2708 			p2p_dbg(p2p, "Delete ASP adv_id=0x%x", adv_id);
2709 			*prior = adv_data->next;
2710 			os_free(adv_data);
2711 			return 0;
2712 		}
2713 		prior = &adv_data->next;
2714 		adv_data = adv_data->next;
2715 	}
2716 
2717 	return -1;
2718 }
2719 
2720 
2721 int p2p_service_add_asp(struct p2p_data *p2p, int auto_accept, u32 adv_id,
2722 			const char *adv_str, u8 svc_state, u16 config_methods,
2723 			const char *svc_info, const u8 *cpt_priority)
2724 {
2725 	struct p2ps_advertisement *adv_data, *tmp, **prev;
2726 	u8 buf[P2PS_HASH_LEN];
2727 	size_t adv_data_len, adv_len, info_len = 0;
2728 	int i;
2729 
2730 	if (!p2p || !adv_str || !adv_str[0] || !cpt_priority)
2731 		return -1;
2732 
2733 	if (!(config_methods & p2p->cfg->config_methods)) {
2734 		p2p_dbg(p2p, "Config methods not supported svc: 0x%x dev: 0x%x",
2735 			config_methods, p2p->cfg->config_methods);
2736 		return -1;
2737 	}
2738 
2739 	if (!p2ps_gen_hash(p2p, adv_str, buf))
2740 		return -1;
2741 
2742 	if (svc_info)
2743 		info_len = os_strlen(svc_info);
2744 	adv_len = os_strlen(adv_str);
2745 	adv_data_len = sizeof(struct p2ps_advertisement) + adv_len + 1 +
2746 		info_len + 1;
2747 
2748 	adv_data = os_zalloc(adv_data_len);
2749 	if (!adv_data)
2750 		return -1;
2751 
2752 	os_memcpy(adv_data->hash, buf, P2PS_HASH_LEN);
2753 	adv_data->id = adv_id;
2754 	adv_data->state = svc_state;
2755 	adv_data->config_methods = config_methods & p2p->cfg->config_methods;
2756 	adv_data->auto_accept = (u8) auto_accept;
2757 	os_memcpy(adv_data->svc_name, adv_str, adv_len);
2758 
2759 	for (i = 0; cpt_priority[i] && i < P2PS_FEATURE_CAPAB_CPT_MAX; i++) {
2760 		adv_data->cpt_priority[i] = cpt_priority[i];
2761 		adv_data->cpt_mask |= cpt_priority[i];
2762 	}
2763 
2764 	if (svc_info && info_len) {
2765 		adv_data->svc_info = &adv_data->svc_name[adv_len + 1];
2766 		os_memcpy(adv_data->svc_info, svc_info, info_len);
2767 	}
2768 
2769 	/*
2770 	 * Group Advertisements by service string. They do not need to be
2771 	 * sorted, but groups allow easier Probe Response instance grouping
2772 	 */
2773 	tmp = p2p->p2ps_adv_list;
2774 	prev = &p2p->p2ps_adv_list;
2775 	while (tmp) {
2776 		if (tmp->id == adv_data->id) {
2777 			if (os_strcmp(tmp->svc_name, adv_data->svc_name) != 0) {
2778 				os_free(adv_data);
2779 				return -1;
2780 			}
2781 			adv_data->next = tmp->next;
2782 			*prev = adv_data;
2783 			os_free(tmp);
2784 			goto inserted;
2785 		} else {
2786 			if (os_strcmp(tmp->svc_name, adv_data->svc_name) == 0) {
2787 				adv_data->next = tmp->next;
2788 				tmp->next = adv_data;
2789 				goto inserted;
2790 			}
2791 		}
2792 		prev = &tmp->next;
2793 		tmp = tmp->next;
2794 	}
2795 
2796 	/* No svc_name match found */
2797 	adv_data->next = p2p->p2ps_adv_list;
2798 	p2p->p2ps_adv_list = adv_data;
2799 
2800 inserted:
2801 	p2p_dbg(p2p,
2802 		"Added ASP advertisement adv_id=0x%x config_methods=0x%x svc_state=0x%x adv_str='%s' cpt_mask=0x%x",
2803 		adv_id, adv_data->config_methods, svc_state, adv_str,
2804 		adv_data->cpt_mask);
2805 
2806 	return 0;
2807 }
2808 
2809 
2810 void p2p_service_flush_asp(struct p2p_data *p2p)
2811 {
2812 	struct p2ps_advertisement *adv, *prev;
2813 
2814 	if (!p2p)
2815 		return;
2816 
2817 	adv = p2p->p2ps_adv_list;
2818 	while (adv) {
2819 		prev = adv;
2820 		adv = adv->next;
2821 		os_free(prev);
2822 	}
2823 
2824 	p2p->p2ps_adv_list = NULL;
2825 	p2p_dbg(p2p, "All ASP advertisements flushed");
2826 }
2827 
2828 
2829 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2830 {
2831 	struct p2p_message msg;
2832 
2833 	os_memset(&msg, 0, sizeof(msg));
2834 	if (p2p_parse_p2p_ie(p2p_ie, &msg))
2835 		return -1;
2836 
2837 	if (msg.p2p_device_addr) {
2838 		os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2839 		return 0;
2840 	} else if (msg.device_id) {
2841 		os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2842 		return 0;
2843 	}
2844 	return -1;
2845 }
2846 
2847 
2848 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2849 {
2850 	struct wpabuf *p2p_ie;
2851 	int ret;
2852 
2853 	p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2854 					     P2P_IE_VENDOR_TYPE);
2855 	if (p2p_ie == NULL)
2856 		return -1;
2857 	ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2858 	wpabuf_free(p2p_ie);
2859 	return ret;
2860 }
2861 
2862 
2863 static void p2p_clear_go_neg(struct p2p_data *p2p)
2864 {
2865 	p2p->go_neg_peer = NULL;
2866 	p2p_clear_timeout(p2p);
2867 	p2p_set_state(p2p, P2P_IDLE);
2868 }
2869 
2870 
2871 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2872 {
2873 	if (p2p->go_neg_peer == NULL) {
2874 		p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
2875 		return; /* No pending Group Formation */
2876 	}
2877 
2878 	if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2879 	    0) {
2880 		p2p_dbg(p2p, "Ignore WPS registration success notification for "
2881 			MACSTR " (GO Negotiation peer " MACSTR ")",
2882 			MAC2STR(mac_addr),
2883 			MAC2STR(p2p->go_neg_peer->intended_addr));
2884 		return; /* Ignore unexpected peer address */
2885 	}
2886 
2887 	p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
2888 		MAC2STR(mac_addr));
2889 
2890 	p2p_clear_go_neg(p2p);
2891 }
2892 
2893 
2894 void p2p_group_formation_failed(struct p2p_data *p2p)
2895 {
2896 	if (p2p->go_neg_peer == NULL) {
2897 		p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
2898 		return; /* No pending Group Formation */
2899 	}
2900 
2901 	p2p_dbg(p2p, "Group Formation failed with " MACSTR,
2902 		MAC2STR(p2p->go_neg_peer->intended_addr));
2903 
2904 	p2p_clear_go_neg(p2p);
2905 }
2906 
2907 
2908 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2909 {
2910 	struct p2p_data *p2p;
2911 
2912 	if (cfg->max_peers < 1 ||
2913 	    cfg->passphrase_len < 8 || cfg->passphrase_len > 63)
2914 		return NULL;
2915 
2916 	p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2917 	if (p2p == NULL)
2918 		return NULL;
2919 	p2p->cfg = (struct p2p_config *) (p2p + 1);
2920 	os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2921 	if (cfg->dev_name)
2922 		p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2923 	if (cfg->manufacturer)
2924 		p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2925 	if (cfg->model_name)
2926 		p2p->cfg->model_name = os_strdup(cfg->model_name);
2927 	if (cfg->model_number)
2928 		p2p->cfg->model_number = os_strdup(cfg->model_number);
2929 	if (cfg->serial_number)
2930 		p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2931 	if (cfg->pref_chan) {
2932 		p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2933 						sizeof(struct p2p_channel));
2934 		if (p2p->cfg->pref_chan) {
2935 			os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2936 				  cfg->num_pref_chan *
2937 				  sizeof(struct p2p_channel));
2938 		} else
2939 			p2p->cfg->num_pref_chan = 0;
2940 	}
2941 
2942 	p2ps_gen_hash(p2p, P2PS_WILD_HASH_STR, p2p->wild_card_hash);
2943 
2944 	p2p->min_disc_int = 1;
2945 	p2p->max_disc_int = 3;
2946 	p2p->max_disc_tu = -1;
2947 
2948 	if (os_get_random(&p2p->next_tie_breaker, 1) < 0)
2949 		p2p->next_tie_breaker = 0;
2950 	p2p->next_tie_breaker &= 0x01;
2951 	if (cfg->sd_request)
2952 		p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2953 	p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2954 	if (cfg->concurrent_operations)
2955 		p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2956 	p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2957 
2958 	dl_list_init(&p2p->devices);
2959 
2960 	p2p->go_timeout = 100;
2961 	p2p->client_timeout = 20;
2962 	p2p->num_p2p_sd_queries = 0;
2963 
2964 	p2p_dbg(p2p, "initialized");
2965 	p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2966 	p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2967 
2968 	return p2p;
2969 }
2970 
2971 
2972 void p2p_deinit(struct p2p_data *p2p)
2973 {
2974 #ifdef CONFIG_WIFI_DISPLAY
2975 	wpabuf_free(p2p->wfd_ie_beacon);
2976 	wpabuf_free(p2p->wfd_ie_probe_req);
2977 	wpabuf_free(p2p->wfd_ie_probe_resp);
2978 	wpabuf_free(p2p->wfd_ie_assoc_req);
2979 	wpabuf_free(p2p->wfd_ie_invitation);
2980 	wpabuf_free(p2p->wfd_ie_prov_disc_req);
2981 	wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2982 	wpabuf_free(p2p->wfd_ie_go_neg);
2983 	wpabuf_free(p2p->wfd_dev_info);
2984 	wpabuf_free(p2p->wfd_assoc_bssid);
2985 	wpabuf_free(p2p->wfd_coupled_sink_info);
2986 #endif /* CONFIG_WIFI_DISPLAY */
2987 
2988 	eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2989 	eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2990 	eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
2991 	p2p_flush(p2p);
2992 	p2p_free_req_dev_types(p2p);
2993 	os_free(p2p->cfg->dev_name);
2994 	os_free(p2p->cfg->manufacturer);
2995 	os_free(p2p->cfg->model_name);
2996 	os_free(p2p->cfg->model_number);
2997 	os_free(p2p->cfg->serial_number);
2998 	os_free(p2p->cfg->pref_chan);
2999 	os_free(p2p->groups);
3000 	p2ps_prov_free(p2p);
3001 	wpabuf_free(p2p->sd_resp);
3002 	p2p_remove_wps_vendor_extensions(p2p);
3003 	os_free(p2p->no_go_freq.range);
3004 	p2p_service_flush_asp(p2p);
3005 
3006 	os_free(p2p);
3007 }
3008 
3009 
3010 void p2p_flush(struct p2p_data *p2p)
3011 {
3012 	struct p2p_device *dev, *prev;
3013 
3014 	p2p_ext_listen(p2p, 0, 0);
3015 	p2p_stop_find(p2p);
3016 	dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
3017 			      list) {
3018 		dl_list_del(&dev->list);
3019 		p2p_device_free(p2p, dev);
3020 	}
3021 	p2p_free_sd_queries(p2p);
3022 	os_free(p2p->after_scan_tx);
3023 	p2p->after_scan_tx = NULL;
3024 	p2p->ssid_set = 0;
3025 }
3026 
3027 
3028 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
3029 {
3030 	struct p2p_device *dev;
3031 
3032 	dev = p2p_get_device(p2p, addr);
3033 	if (dev == NULL)
3034 		return -1;
3035 
3036 	p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
3037 
3038 	if (p2p->go_neg_peer == dev) {
3039 		eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
3040 		p2p->go_neg_peer = NULL;
3041 	}
3042 
3043 	dev->wps_method = WPS_NOT_READY;
3044 	dev->oob_pw_id = 0;
3045 	dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
3046 	dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
3047 
3048 	/* Check if after_scan_tx is for this peer. If so free it */
3049 	if (p2p->after_scan_tx &&
3050 	    os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
3051 		os_free(p2p->after_scan_tx);
3052 		p2p->after_scan_tx = NULL;
3053 	}
3054 
3055 	return 0;
3056 }
3057 
3058 
3059 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
3060 {
3061 	os_free(p2p->cfg->dev_name);
3062 	if (dev_name) {
3063 		p2p->cfg->dev_name = os_strdup(dev_name);
3064 		if (p2p->cfg->dev_name == NULL)
3065 			return -1;
3066 	} else
3067 		p2p->cfg->dev_name = NULL;
3068 	return 0;
3069 }
3070 
3071 
3072 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
3073 {
3074 	os_free(p2p->cfg->manufacturer);
3075 	p2p->cfg->manufacturer = NULL;
3076 	if (manufacturer) {
3077 		p2p->cfg->manufacturer = os_strdup(manufacturer);
3078 		if (p2p->cfg->manufacturer == NULL)
3079 			return -1;
3080 	}
3081 
3082 	return 0;
3083 }
3084 
3085 
3086 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
3087 {
3088 	os_free(p2p->cfg->model_name);
3089 	p2p->cfg->model_name = NULL;
3090 	if (model_name) {
3091 		p2p->cfg->model_name = os_strdup(model_name);
3092 		if (p2p->cfg->model_name == NULL)
3093 			return -1;
3094 	}
3095 
3096 	return 0;
3097 }
3098 
3099 
3100 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
3101 {
3102 	os_free(p2p->cfg->model_number);
3103 	p2p->cfg->model_number = NULL;
3104 	if (model_number) {
3105 		p2p->cfg->model_number = os_strdup(model_number);
3106 		if (p2p->cfg->model_number == NULL)
3107 			return -1;
3108 	}
3109 
3110 	return 0;
3111 }
3112 
3113 
3114 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
3115 {
3116 	os_free(p2p->cfg->serial_number);
3117 	p2p->cfg->serial_number = NULL;
3118 	if (serial_number) {
3119 		p2p->cfg->serial_number = os_strdup(serial_number);
3120 		if (p2p->cfg->serial_number == NULL)
3121 			return -1;
3122 	}
3123 
3124 	return 0;
3125 }
3126 
3127 
3128 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
3129 {
3130 	p2p->cfg->config_methods = config_methods;
3131 }
3132 
3133 
3134 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
3135 {
3136 	os_memcpy(p2p->cfg->uuid, uuid, 16);
3137 }
3138 
3139 
3140 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
3141 {
3142 	os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
3143 	return 0;
3144 }
3145 
3146 
3147 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
3148 			  size_t num_dev_types)
3149 {
3150 	if (num_dev_types > P2P_SEC_DEVICE_TYPES)
3151 		num_dev_types = P2P_SEC_DEVICE_TYPES;
3152 	p2p->cfg->num_sec_dev_types = num_dev_types;
3153 	os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
3154 	return 0;
3155 }
3156 
3157 
3158 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
3159 {
3160 	int i;
3161 
3162 	for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3163 		wpabuf_free(p2p->wps_vendor_ext[i]);
3164 		p2p->wps_vendor_ext[i] = NULL;
3165 	}
3166 }
3167 
3168 
3169 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
3170 				 const struct wpabuf *vendor_ext)
3171 {
3172 	int i;
3173 
3174 	if (vendor_ext == NULL)
3175 		return -1;
3176 
3177 	for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3178 		if (p2p->wps_vendor_ext[i] == NULL)
3179 			break;
3180 	}
3181 	if (i >= P2P_MAX_WPS_VENDOR_EXT)
3182 		return -1;
3183 
3184 	p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
3185 	if (p2p->wps_vendor_ext[i] == NULL)
3186 		return -1;
3187 
3188 	return 0;
3189 }
3190 
3191 
3192 int p2p_set_country(struct p2p_data *p2p, const char *country)
3193 {
3194 	os_memcpy(p2p->cfg->country, country, 3);
3195 	return 0;
3196 }
3197 
3198 
3199 static int p2p_pre_find_operation(struct p2p_data *p2p, struct p2p_device *dev)
3200 {
3201 	int res;
3202 
3203 	if (dev->sd_pending_bcast_queries == 0) {
3204 		/* Initialize with total number of registered broadcast
3205 		 * SD queries. */
3206 		dev->sd_pending_bcast_queries = p2p->num_p2p_sd_queries;
3207 	}
3208 
3209 	res = p2p_start_sd(p2p, dev);
3210 	if (res == -2)
3211 		return -2;
3212 	if (res == 0)
3213 		return 1;
3214 
3215 	if (dev->req_config_methods &&
3216 	    !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
3217 		p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3218 			MACSTR " (config methods 0x%x)",
3219 			MAC2STR(dev->info.p2p_device_addr),
3220 			dev->req_config_methods);
3221 		if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
3222 			return 1;
3223 	}
3224 
3225 	return 0;
3226 }
3227 
3228 
3229 void p2p_continue_find(struct p2p_data *p2p)
3230 {
3231 	struct p2p_device *dev;
3232 	int found, res;
3233 
3234 	p2p_set_state(p2p, P2P_SEARCH);
3235 
3236 	/* Continue from the device following the last iteration */
3237 	found = 0;
3238 	dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3239 		if (dev == p2p->last_p2p_find_oper) {
3240 			found = 1;
3241 			continue;
3242 		}
3243 		if (!found)
3244 			continue;
3245 		res = p2p_pre_find_operation(p2p, dev);
3246 		if (res > 0) {
3247 			p2p->last_p2p_find_oper = dev;
3248 			return;
3249 		}
3250 		if (res == -2)
3251 			goto skip_sd;
3252 	}
3253 
3254 	/*
3255 	 * Wrap around to the beginning of the list and continue until the last
3256 	 * iteration device.
3257 	 */
3258 	dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3259 		res = p2p_pre_find_operation(p2p, dev);
3260 		if (res > 0) {
3261 			p2p->last_p2p_find_oper = dev;
3262 			return;
3263 		}
3264 		if (res == -2)
3265 			goto skip_sd;
3266 		if (dev == p2p->last_p2p_find_oper)
3267 			break;
3268 	}
3269 
3270 skip_sd:
3271 	os_memset(p2p->sd_query_no_ack, 0, ETH_ALEN);
3272 	p2p_listen_in_find(p2p, 1);
3273 }
3274 
3275 
3276 static void p2p_sd_cb(struct p2p_data *p2p, int success)
3277 {
3278 	p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
3279 		success);
3280 	p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3281 
3282 	if (!success) {
3283 		if (p2p->sd_peer) {
3284 			if (is_zero_ether_addr(p2p->sd_query_no_ack)) {
3285 				os_memcpy(p2p->sd_query_no_ack,
3286 					  p2p->sd_peer->info.p2p_device_addr,
3287 					  ETH_ALEN);
3288 				p2p_dbg(p2p,
3289 					"First SD Query no-ACK in this search iteration: "
3290 					MACSTR, MAC2STR(p2p->sd_query_no_ack));
3291 			}
3292 			p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3293 		}
3294 		p2p->sd_peer = NULL;
3295 		if (p2p->state != P2P_IDLE)
3296 			p2p_continue_find(p2p);
3297 		return;
3298 	}
3299 
3300 	if (p2p->sd_peer == NULL) {
3301 		p2p_dbg(p2p, "No SD peer entry known");
3302 		if (p2p->state != P2P_IDLE)
3303 			p2p_continue_find(p2p);
3304 		return;
3305 	}
3306 
3307 	if (p2p->sd_query && p2p->sd_query->for_all_peers) {
3308 		/* Update the pending broadcast SD query count for this device
3309 		 */
3310 		p2p->sd_peer->sd_pending_bcast_queries--;
3311 
3312 		/*
3313 		 * If there are no pending broadcast queries for this device,
3314 		 * mark it as done (-1).
3315 		 */
3316 		if (p2p->sd_peer->sd_pending_bcast_queries == 0)
3317 			p2p->sd_peer->sd_pending_bcast_queries = -1;
3318 	}
3319 
3320 	/* Wait for response from the peer */
3321 	p2p_set_state(p2p, P2P_SD_DURING_FIND);
3322 	p2p_set_timeout(p2p, 0, 200000);
3323 }
3324 
3325 
3326 /**
3327  * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
3328  * @p2p: P2P module context from p2p_init()
3329  */
3330 static void p2p_retry_pd(struct p2p_data *p2p)
3331 {
3332 	struct p2p_device *dev;
3333 
3334 	/*
3335 	 * Retry the prov disc req attempt only for the peer that the user had
3336 	 * requested.
3337 	 */
3338 
3339 	dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3340 		if (os_memcmp(p2p->pending_pd_devaddr,
3341 			      dev->info.p2p_device_addr, ETH_ALEN) != 0)
3342 			continue;
3343 		if (!dev->req_config_methods)
3344 			continue;
3345 
3346 		p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3347 			MACSTR " (config methods 0x%x)",
3348 			MAC2STR(dev->info.p2p_device_addr),
3349 			dev->req_config_methods);
3350 		p2p_send_prov_disc_req(p2p, dev,
3351 				       dev->flags & P2P_DEV_PD_FOR_JOIN,
3352 				       p2p->pd_force_freq);
3353 		return;
3354 	}
3355 }
3356 
3357 
3358 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
3359 {
3360 	p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
3361 		success);
3362 
3363 	/*
3364 	 * Postpone resetting the pending action state till after we actually
3365 	 * time out. This allows us to take some action like notifying any
3366 	 * interested parties about no response to the request.
3367 	 *
3368 	 * When the timer (below) goes off we check in IDLE, SEARCH, or
3369 	 * LISTEN_ONLY state, which are the only allowed states to issue a PD
3370 	 * requests in, if this was still pending and then raise notification.
3371 	 */
3372 
3373 	if (!success) {
3374 		p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3375 
3376 		if (p2p->user_initiated_pd &&
3377 		    (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
3378 		{
3379 			/* Retry request from timeout to avoid busy loops */
3380 			p2p->pending_action_state = P2P_PENDING_PD;
3381 			p2p_set_timeout(p2p, 0, 50000);
3382 		} else if (p2p->state != P2P_IDLE)
3383 			p2p_continue_find(p2p);
3384 		else if (p2p->user_initiated_pd) {
3385 			p2p->pending_action_state = P2P_PENDING_PD;
3386 			p2p_set_timeout(p2p, 0, 300000);
3387 		}
3388 		return;
3389 	}
3390 
3391 	/*
3392 	 * If after PD Request the peer doesn't expect to receive PD Response
3393 	 * the PD Request ACK indicates a completion of the current PD. This
3394 	 * happens only on the advertiser side sending the follow-on PD Request
3395 	 * with the status different than 12 (Success: accepted by user).
3396 	 */
3397 	if (p2p->p2ps_prov && !p2p->p2ps_prov->pd_seeker &&
3398 	    p2p->p2ps_prov->status != P2P_SC_SUCCESS_DEFERRED) {
3399 		p2p_dbg(p2p, "P2PS PD completion on Follow-on PD Request ACK");
3400 
3401 		if (p2p->send_action_in_progress) {
3402 			p2p->send_action_in_progress = 0;
3403 			p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3404 		}
3405 
3406 		p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3407 
3408 		if (p2p->cfg->p2ps_prov_complete) {
3409 			p2p->cfg->p2ps_prov_complete(
3410 				p2p->cfg->cb_ctx,
3411 				p2p->p2ps_prov->status,
3412 				p2p->p2ps_prov->adv_mac,
3413 				p2p->p2ps_prov->adv_mac,
3414 				p2p->p2ps_prov->session_mac,
3415 				NULL, p2p->p2ps_prov->adv_id,
3416 				p2p->p2ps_prov->session_id,
3417 				0, 0, NULL, 0, 0, 0,
3418 				NULL, NULL, 0, 0, NULL, 0);
3419 		}
3420 
3421 		if (p2p->user_initiated_pd)
3422 			p2p_reset_pending_pd(p2p);
3423 
3424 		p2ps_prov_free(p2p);
3425 		return;
3426 	}
3427 
3428 	/*
3429 	 * This postponing, of resetting pending_action_state, needs to be
3430 	 * done only for user initiated PD requests and not internal ones.
3431 	 */
3432 	if (p2p->user_initiated_pd)
3433 		p2p->pending_action_state = P2P_PENDING_PD;
3434 	else
3435 		p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3436 
3437 	/* Wait for response from the peer */
3438 	if (p2p->state == P2P_SEARCH)
3439 		p2p_set_state(p2p, P2P_PD_DURING_FIND);
3440 	p2p_set_timeout(p2p, 0, 200000);
3441 }
3442 
3443 
3444 static int p2p_check_after_scan_tx_continuation(struct p2p_data *p2p)
3445 {
3446 	if (p2p->after_scan_tx_in_progress) {
3447 		p2p->after_scan_tx_in_progress = 0;
3448 		if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
3449 		    p2p_run_after_scan(p2p))
3450 			return 1;
3451 		if (p2p->state == P2P_SEARCH) {
3452 			p2p_dbg(p2p, "Continue find after after_scan_tx completion");
3453 			p2p_continue_find(p2p);
3454 		}
3455 	}
3456 
3457 	return 0;
3458 }
3459 
3460 
3461 static void p2p_prov_disc_resp_cb(struct p2p_data *p2p, int success)
3462 {
3463 	p2p_dbg(p2p, "Provision Discovery Response TX callback: success=%d",
3464 		success);
3465 
3466 	if (p2p->send_action_in_progress) {
3467 		p2p->send_action_in_progress = 0;
3468 		p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3469 	}
3470 
3471 	p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3472 
3473 	if (!success)
3474 		goto continue_search;
3475 
3476 	if (!p2p->cfg->prov_disc_resp_cb ||
3477 	    p2p->cfg->prov_disc_resp_cb(p2p->cfg->cb_ctx) < 1)
3478 		goto continue_search;
3479 
3480 	p2p_dbg(p2p,
3481 		"Post-Provision Discovery operations started - do not try to continue other P2P operations");
3482 	return;
3483 
3484 continue_search:
3485 	p2p_check_after_scan_tx_continuation(p2p);
3486 }
3487 
3488 
3489 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
3490 			 struct os_reltime *rx_time, int level, const u8 *ies,
3491 			 size_t ies_len)
3492 {
3493 	if (os_reltime_before(rx_time, &p2p->find_start)) {
3494 		/*
3495 		 * The driver may have cached (e.g., in cfg80211 BSS table) the
3496 		 * scan results for relatively long time. To avoid reporting
3497 		 * stale information, update P2P peers only based on results
3498 		 * that have based on frames received after the last p2p_find
3499 		 * operation was started.
3500 		 */
3501 		p2p_dbg(p2p, "Ignore old scan result for " MACSTR
3502 			" (rx_time=%u.%06u find_start=%u.%06u)",
3503 			MAC2STR(bssid), (unsigned int) rx_time->sec,
3504 			(unsigned int) rx_time->usec,
3505 			(unsigned int) p2p->find_start.sec,
3506 			(unsigned int) p2p->find_start.usec);
3507 		return 0;
3508 	}
3509 
3510 	p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
3511 
3512 	return 0;
3513 }
3514 
3515 
3516 void p2p_scan_res_handled(struct p2p_data *p2p)
3517 {
3518 	if (!p2p->p2p_scan_running) {
3519 		p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
3520 	}
3521 	p2p->p2p_scan_running = 0;
3522 	eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
3523 
3524 	if (p2p_run_after_scan(p2p))
3525 		return;
3526 	if (p2p->state == P2P_SEARCH)
3527 		p2p_continue_find(p2p);
3528 }
3529 
3530 
3531 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id,
3532 		 unsigned int bands)
3533 {
3534 	u8 dev_capab;
3535 	u8 *len;
3536 
3537 #ifdef CONFIG_WIFI_DISPLAY
3538 	if (p2p->wfd_ie_probe_req)
3539 		wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
3540 #endif /* CONFIG_WIFI_DISPLAY */
3541 
3542 	if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3543 		wpabuf_put_buf(ies,
3544 			       p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3545 
3546 	len = p2p_buf_add_ie_hdr(ies);
3547 
3548 	dev_capab = p2p->dev_capab & ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3549 
3550 	/* P2PS requires Probe Request frames to include SD bit */
3551 	if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3552 		dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
3553 
3554 	p2p_buf_add_capability(ies, dev_capab, 0);
3555 
3556 	if (dev_id)
3557 		p2p_buf_add_device_id(ies, dev_id);
3558 	if (p2p->cfg->reg_class && p2p->cfg->channel)
3559 		p2p_buf_add_listen_channel(ies, p2p->cfg->country,
3560 					   p2p->cfg->reg_class,
3561 					   p2p->cfg->channel);
3562 	if (p2p->ext_listen_interval)
3563 		p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
3564 					      p2p->ext_listen_interval);
3565 
3566 	if (bands & BAND_60_GHZ)
3567 		p2p_buf_add_device_info(ies, p2p, NULL);
3568 
3569 	if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3570 		p2p_buf_add_service_hash(ies, p2p);
3571 
3572 	/* TODO: p2p_buf_add_operating_channel() if GO */
3573 	p2p_buf_update_ie_hdr(ies, len);
3574 }
3575 
3576 
3577 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
3578 {
3579 	size_t len = 100;
3580 
3581 #ifdef CONFIG_WIFI_DISPLAY
3582 	if (p2p && p2p->wfd_ie_probe_req)
3583 		len += wpabuf_len(p2p->wfd_ie_probe_req);
3584 #endif /* CONFIG_WIFI_DISPLAY */
3585 
3586 	if (p2p && p2p->vendor_elem &&
3587 	    p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3588 		len += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3589 
3590 	return len;
3591 }
3592 
3593 
3594 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
3595 {
3596 	return p2p_attr_text(p2p_ie, buf, end);
3597 }
3598 
3599 
3600 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
3601 {
3602 	struct p2p_device *dev = p2p->go_neg_peer;
3603 	int timeout;
3604 
3605 	p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
3606 
3607 	if (dev == NULL) {
3608 		p2p_dbg(p2p, "No pending GO Negotiation");
3609 		return;
3610 	}
3611 
3612 	if (success) {
3613 		if (dev->flags & P2P_DEV_USER_REJECTED) {
3614 			p2p_set_state(p2p, P2P_IDLE);
3615 			return;
3616 		}
3617 	} else if (dev->go_neg_req_sent) {
3618 		/* Cancel the increment from p2p_connect_send() on failure */
3619 		dev->go_neg_req_sent--;
3620 	}
3621 
3622 	if (!success &&
3623 	    (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
3624 	    !is_zero_ether_addr(dev->member_in_go_dev)) {
3625 		p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
3626 			MAC2STR(dev->info.p2p_device_addr));
3627 		p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3628 		p2p_send_dev_disc_req(p2p, dev);
3629 		return;
3630 	}
3631 
3632 	/*
3633 	 * Use P2P find, if needed, to find the other device from its listen
3634 	 * channel.
3635 	 */
3636 	p2p_set_state(p2p, P2P_CONNECT);
3637 	timeout = success ? 500000 : 100000;
3638 	if (!success && p2p->go_neg_peer &&
3639 	    (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
3640 		unsigned int r;
3641 		/*
3642 		 * Peer is expected to wait our response and we will skip the
3643 		 * listen phase. Add some randomness to the wait time here to
3644 		 * make it less likely to hit cases where we could end up in
3645 		 * sync with peer not listening.
3646 		 */
3647 		if (os_get_random((u8 *) &r, sizeof(r)) < 0)
3648 			r = 0;
3649 		timeout += r % 100000;
3650 	}
3651 	p2p_set_timeout(p2p, 0, timeout);
3652 }
3653 
3654 
3655 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
3656 {
3657 	p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
3658 		success);
3659 	if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
3660 		p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
3661 		return;
3662 	}
3663 	p2p_set_state(p2p, P2P_CONNECT);
3664 	p2p_set_timeout(p2p, 0, 500000);
3665 }
3666 
3667 
3668 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
3669 				       const u8 *addr)
3670 {
3671 	p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
3672 	if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
3673 		p2p_go_neg_failed(p2p, p2p->go_neg_peer->status);
3674 		return;
3675 	}
3676 
3677 	if (success) {
3678 		struct p2p_device *dev;
3679 		dev = p2p_get_device(p2p, addr);
3680 		if (dev &&
3681 		    dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
3682 			dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
3683 	}
3684 
3685 	if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND)
3686 		p2p_continue_find(p2p);
3687 }
3688 
3689 
3690 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
3691 			       enum p2p_send_action_result result)
3692 {
3693 	struct p2p_device *dev;
3694 
3695 	p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
3696 	if (result == P2P_SEND_ACTION_FAILED) {
3697 		p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3698 		p2p_go_neg_failed(p2p, -1);
3699 		return;
3700 	}
3701 
3702 	dev = p2p->go_neg_peer;
3703 
3704 	if (result == P2P_SEND_ACTION_NO_ACK) {
3705 		/*
3706 		 * Retry GO Negotiation Confirmation
3707 		 * P2P_GO_NEG_CNF_MAX_RETRY_COUNT times if we did not receive
3708 		 * ACK for confirmation.
3709 		 */
3710 		if (dev && dev->go_neg_conf &&
3711 		    dev->go_neg_conf_sent <= P2P_GO_NEG_CNF_MAX_RETRY_COUNT) {
3712 			p2p_dbg(p2p, "GO Negotiation Confirm retry %d",
3713 				dev->go_neg_conf_sent);
3714 			p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM;
3715 			if (p2p_send_action(p2p, dev->go_neg_conf_freq,
3716 					    dev->info.p2p_device_addr,
3717 					    p2p->cfg->dev_addr,
3718 					    dev->info.p2p_device_addr,
3719 					    wpabuf_head(dev->go_neg_conf),
3720 					    wpabuf_len(dev->go_neg_conf), 0) >=
3721 			    0) {
3722 				dev->go_neg_conf_sent++;
3723 				return;
3724 			}
3725 			p2p_dbg(p2p, "Failed to re-send Action frame");
3726 
3727 			/*
3728 			 * Continue with the assumption that the first attempt
3729 			 * went through and just the ACK frame was lost.
3730 			 */
3731 		}
3732 
3733 		/*
3734 		 * It looks like the TX status for GO Negotiation Confirm is
3735 		 * often showing failure even when the peer has actually
3736 		 * received the frame. Since the peer may change channels
3737 		 * immediately after having received the frame, we may not see
3738 		 * an Ack for retries, so just dropping a single frame may
3739 		 * trigger this. To allow the group formation to succeed if the
3740 		 * peer did indeed receive the frame, continue regardless of
3741 		 * the TX status.
3742 		 */
3743 		p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
3744 	}
3745 
3746 	p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3747 
3748 	if (dev == NULL)
3749 		return;
3750 
3751 	p2p_go_complete(p2p, dev);
3752 }
3753 
3754 
3755 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3756 			const u8 *src, const u8 *bssid,
3757 			enum p2p_send_action_result result)
3758 {
3759 	enum p2p_pending_action_state state;
3760 	int success;
3761 
3762 	p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
3763 		" src=" MACSTR " bssid=" MACSTR " result=%d p2p_state=%s)",
3764 		p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
3765 		MAC2STR(bssid), result, p2p_state_txt(p2p->state));
3766 	success = result == P2P_SEND_ACTION_SUCCESS;
3767 	state = p2p->pending_action_state;
3768 	p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3769 	switch (state) {
3770 	case P2P_NO_PENDING_ACTION:
3771 		if (p2p->send_action_in_progress) {
3772 			p2p->send_action_in_progress = 0;
3773 			p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3774 		}
3775 		p2p_check_after_scan_tx_continuation(p2p);
3776 		break;
3777 	case P2P_PENDING_GO_NEG_REQUEST:
3778 		p2p_go_neg_req_cb(p2p, success);
3779 		break;
3780 	case P2P_PENDING_GO_NEG_RESPONSE:
3781 		p2p_go_neg_resp_cb(p2p, success);
3782 		break;
3783 	case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
3784 		p2p_go_neg_resp_failure_cb(p2p, success, dst);
3785 		break;
3786 	case P2P_PENDING_GO_NEG_CONFIRM:
3787 		p2p_go_neg_conf_cb(p2p, result);
3788 		break;
3789 	case P2P_PENDING_SD:
3790 		p2p_sd_cb(p2p, success);
3791 		break;
3792 	case P2P_PENDING_PD:
3793 		p2p_prov_disc_cb(p2p, success);
3794 		break;
3795 	case P2P_PENDING_PD_RESPONSE:
3796 		p2p_prov_disc_resp_cb(p2p, success);
3797 		break;
3798 	case P2P_PENDING_INVITATION_REQUEST:
3799 		p2p_invitation_req_cb(p2p, success);
3800 		break;
3801 	case P2P_PENDING_INVITATION_RESPONSE:
3802 		p2p_invitation_resp_cb(p2p, success);
3803 		if (p2p->inv_status != P2P_SC_SUCCESS)
3804 			p2p_check_after_scan_tx_continuation(p2p);
3805 		break;
3806 	case P2P_PENDING_DEV_DISC_REQUEST:
3807 		p2p_dev_disc_req_cb(p2p, success);
3808 		break;
3809 	case P2P_PENDING_DEV_DISC_RESPONSE:
3810 		p2p_dev_disc_resp_cb(p2p, success);
3811 		break;
3812 	case P2P_PENDING_GO_DISC_REQ:
3813 		p2p_go_disc_req_cb(p2p, success);
3814 		break;
3815 	}
3816 
3817 	p2p->after_scan_tx_in_progress = 0;
3818 }
3819 
3820 
3821 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3822 		   unsigned int duration)
3823 {
3824 	if (freq == p2p->pending_client_disc_freq) {
3825 		p2p_dbg(p2p, "Client discoverability remain-awake completed");
3826 		p2p->pending_client_disc_freq = 0;
3827 		return;
3828 	}
3829 
3830 	if (freq != p2p->pending_listen_freq) {
3831 		p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
3832 			freq, duration, p2p->pending_listen_freq);
3833 		return;
3834 	}
3835 
3836 	p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
3837 		p2p->pending_listen_sec, p2p->pending_listen_usec,
3838 		p2p->pending_listen_freq);
3839 	p2p->in_listen = 1;
3840 	p2p->drv_in_listen = freq;
3841 	if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3842 		/*
3843 		 * Add 20 msec extra wait to avoid race condition with driver
3844 		 * remain-on-channel end event, i.e., give driver more time to
3845 		 * complete the operation before our timeout expires.
3846 		 */
3847 		p2p_set_timeout(p2p, p2p->pending_listen_sec,
3848 				p2p->pending_listen_usec + 20000);
3849 	}
3850 
3851 	p2p->pending_listen_freq = 0;
3852 }
3853 
3854 
3855 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3856 {
3857 	p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
3858 	p2p->drv_in_listen = 0;
3859 	if (p2p->in_listen)
3860 		return 0; /* Internal timeout will trigger the next step */
3861 
3862 	if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3863 		if (p2p->go_neg_peer->connect_reqs >= 120) {
3864 			p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3865 			p2p_go_neg_failed(p2p, -1);
3866 			return 0;
3867 		}
3868 
3869 		p2p_set_state(p2p, P2P_CONNECT);
3870 		p2p_connect_send(p2p, p2p->go_neg_peer);
3871 		return 1;
3872 	} else if (p2p->state == P2P_SEARCH) {
3873 		if (p2p->p2p_scan_running) {
3874 			 /*
3875 			  * Search is already in progress. This can happen if
3876 			  * an Action frame RX is reported immediately after
3877 			  * the end of a remain-on-channel operation and the
3878 			  * response frame to that is sent using an offchannel
3879 			  * operation while in p2p_find. Avoid an attempt to
3880 			  * restart a scan here.
3881 			  */
3882 			p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
3883 			return 1;
3884 		}
3885 		if (p2p->pending_listen_freq) {
3886 			/*
3887 			 * Better wait a bit if the driver is unable to start
3888 			 * offchannel operation for some reason. p2p_search()
3889 			 * will be started from internal timeout.
3890 			 */
3891 			p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3892 			p2p_set_timeout(p2p, 0, 100000);
3893 			return 1;
3894 		}
3895 		if (p2p->search_delay) {
3896 			p2p_dbg(p2p, "Delay search operation by %u ms",
3897 				p2p->search_delay);
3898 			p2p_set_timeout(p2p, p2p->search_delay / 1000,
3899 					(p2p->search_delay % 1000) * 1000);
3900 			return 1;
3901 		}
3902 		p2p_search(p2p);
3903 		return 1;
3904 	}
3905 
3906 	return 0;
3907 }
3908 
3909 
3910 static void p2p_timeout_connect(struct p2p_data *p2p)
3911 {
3912 	p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3913 	if (p2p->go_neg_peer &&
3914 	    (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3915 		p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
3916 		p2p_go_neg_failed(p2p, -1);
3917 		return;
3918 	}
3919 	if (p2p->go_neg_peer &&
3920 	    (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3921 	    p2p->go_neg_peer->connect_reqs < 120) {
3922 		p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
3923 		p2p_connect_send(p2p, p2p->go_neg_peer);
3924 		return;
3925 	}
3926 	if (p2p->go_neg_peer && p2p->go_neg_peer->oob_go_neg_freq > 0) {
3927 		p2p_dbg(p2p, "Skip connect-listen since GO Neg channel known (OOB)");
3928 		p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3929 		p2p_set_timeout(p2p, 0, 30000);
3930 		return;
3931 	}
3932 	p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3933 	p2p_listen_in_find(p2p, 0);
3934 }
3935 
3936 
3937 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3938 {
3939 	if (p2p->go_neg_peer) {
3940 		if (p2p->drv_in_listen) {
3941 			p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
3942 			return;
3943 		}
3944 
3945 		if (p2p->go_neg_peer->connect_reqs >= 120) {
3946 			p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3947 			p2p_go_neg_failed(p2p, -1);
3948 			return;
3949 		}
3950 
3951 		p2p_set_state(p2p, P2P_CONNECT);
3952 		p2p_connect_send(p2p, p2p->go_neg_peer);
3953 	} else
3954 		p2p_set_state(p2p, P2P_IDLE);
3955 }
3956 
3957 
3958 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3959 {
3960 	p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
3961 
3962 	if (p2p->cfg->is_concurrent_session_active &&
3963 	    p2p->cfg->is_concurrent_session_active(p2p->cfg->cb_ctx))
3964 		p2p_set_timeout(p2p, 0, 500000);
3965 	else
3966 		p2p_set_timeout(p2p, 0, 200000);
3967 }
3968 
3969 
3970 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3971 {
3972 	struct p2p_device *dev = p2p->go_neg_peer;
3973 
3974 	if (dev == NULL) {
3975 		p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
3976 		return;
3977 	}
3978 
3979 	p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
3980 	p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
3981 	p2p_listen_in_find(p2p, 0);
3982 }
3983 
3984 
3985 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3986 {
3987 	p2p_dbg(p2p, "Service Discovery Query timeout");
3988 	if (p2p->sd_peer) {
3989 		p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3990 		p2p->sd_peer = NULL;
3991 	}
3992 	p2p_continue_find(p2p);
3993 }
3994 
3995 
3996 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3997 {
3998 	p2p_dbg(p2p, "Provision Discovery Request timeout");
3999 	p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
4000 	p2p_continue_find(p2p);
4001 }
4002 
4003 
4004 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
4005 {
4006 	u32 adv_id = 0;
4007 	u8 *adv_mac = NULL;
4008 
4009 	p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4010 
4011 	/*
4012 	 * For user initiated PD requests that we have not gotten any responses
4013 	 * for while in IDLE state, we retry them a couple of times before
4014 	 * giving up.
4015 	 */
4016 	if (!p2p->user_initiated_pd)
4017 		return;
4018 
4019 	p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
4020 
4021 	if (p2p->pd_retries) {
4022 		p2p->pd_retries--;
4023 		p2p_retry_pd(p2p);
4024 	} else {
4025 		struct p2p_device *dev;
4026 		int for_join = 0;
4027 
4028 		dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
4029 			if (os_memcmp(p2p->pending_pd_devaddr,
4030 				      dev->info.p2p_device_addr, ETH_ALEN) != 0)
4031 				continue;
4032 			if (dev->req_config_methods &&
4033 			    (dev->flags & P2P_DEV_PD_FOR_JOIN))
4034 				for_join = 1;
4035 		}
4036 
4037 		if (p2p->p2ps_prov) {
4038 			adv_id = p2p->p2ps_prov->adv_id;
4039 			adv_mac = p2p->p2ps_prov->adv_mac;
4040 		}
4041 
4042 		if (p2p->cfg->prov_disc_fail)
4043 			p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
4044 						 p2p->pending_pd_devaddr,
4045 						 for_join ?
4046 						 P2P_PROV_DISC_TIMEOUT_JOIN :
4047 						 P2P_PROV_DISC_TIMEOUT,
4048 						 adv_id, adv_mac, NULL);
4049 		p2p_reset_pending_pd(p2p);
4050 	}
4051 }
4052 
4053 
4054 static void p2p_timeout_invite(struct p2p_data *p2p)
4055 {
4056 	p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
4057 	p2p_set_state(p2p, P2P_INVITE_LISTEN);
4058 	if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
4059 		/*
4060 		 * Better remain on operating channel instead of listen channel
4061 		 * when running a group.
4062 		 */
4063 		p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
4064 		p2p_set_timeout(p2p, 0, 100000);
4065 		return;
4066 	}
4067 	p2p_listen_in_find(p2p, 0);
4068 }
4069 
4070 
4071 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
4072 {
4073 	if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
4074 		p2p_set_state(p2p, P2P_INVITE);
4075 		p2p_invite_send(p2p, p2p->invite_peer,
4076 				p2p->invite_go_dev_addr, p2p->invite_dev_pw_id);
4077 	} else {
4078 		if (p2p->invite_peer) {
4079 			p2p_dbg(p2p, "Invitation Request retry limit reached");
4080 			if (p2p->cfg->invitation_result)
4081 				p2p->cfg->invitation_result(
4082 					p2p->cfg->cb_ctx, -1, NULL, NULL,
4083 					p2p->invite_peer->info.p2p_device_addr,
4084 					0, 0);
4085 		}
4086 		p2p_set_state(p2p, P2P_IDLE);
4087 	}
4088 }
4089 
4090 
4091 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
4092 {
4093 	struct p2p_data *p2p = eloop_ctx;
4094 
4095 	p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
4096 
4097 	p2p->in_listen = 0;
4098 	if (p2p->drv_in_listen) {
4099 		p2p_dbg(p2p, "Driver is still in listen state - stop it");
4100 		p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
4101 	}
4102 
4103 	switch (p2p->state) {
4104 	case P2P_IDLE:
4105 		/* Check if we timed out waiting for PD req */
4106 		if (p2p->pending_action_state == P2P_PENDING_PD)
4107 			p2p_timeout_prov_disc_req(p2p);
4108 		break;
4109 	case P2P_SEARCH:
4110 		/* Check if we timed out waiting for PD req */
4111 		if (p2p->pending_action_state == P2P_PENDING_PD)
4112 			p2p_timeout_prov_disc_req(p2p);
4113 		if (p2p->search_delay && !p2p->in_search_delay) {
4114 			p2p_dbg(p2p, "Delay search operation by %u ms",
4115 				p2p->search_delay);
4116 			p2p->in_search_delay = 1;
4117 			p2p_set_timeout(p2p, p2p->search_delay / 1000,
4118 					(p2p->search_delay % 1000) * 1000);
4119 			break;
4120 		}
4121 		p2p->in_search_delay = 0;
4122 		p2p_search(p2p);
4123 		break;
4124 	case P2P_CONNECT:
4125 		p2p_timeout_connect(p2p);
4126 		break;
4127 	case P2P_CONNECT_LISTEN:
4128 		p2p_timeout_connect_listen(p2p);
4129 		break;
4130 	case P2P_GO_NEG:
4131 		break;
4132 	case P2P_LISTEN_ONLY:
4133 		/* Check if we timed out waiting for PD req */
4134 		if (p2p->pending_action_state == P2P_PENDING_PD)
4135 			p2p_timeout_prov_disc_req(p2p);
4136 
4137 		if (p2p->ext_listen_only) {
4138 			p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
4139 			p2p->ext_listen_only = 0;
4140 			p2p_set_state(p2p, P2P_IDLE);
4141 		}
4142 		break;
4143 	case P2P_WAIT_PEER_CONNECT:
4144 		p2p_timeout_wait_peer_connect(p2p);
4145 		break;
4146 	case P2P_WAIT_PEER_IDLE:
4147 		p2p_timeout_wait_peer_idle(p2p);
4148 		break;
4149 	case P2P_SD_DURING_FIND:
4150 		p2p_timeout_sd_during_find(p2p);
4151 		break;
4152 	case P2P_PROVISIONING:
4153 		break;
4154 	case P2P_PD_DURING_FIND:
4155 		p2p_timeout_prov_disc_during_find(p2p);
4156 		break;
4157 	case P2P_INVITE:
4158 		p2p_timeout_invite(p2p);
4159 		break;
4160 	case P2P_INVITE_LISTEN:
4161 		p2p_timeout_invite_listen(p2p);
4162 		break;
4163 	}
4164 }
4165 
4166 
4167 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
4168 {
4169 	struct p2p_device *dev;
4170 
4171 	dev = p2p_get_device(p2p, peer_addr);
4172 	p2p_dbg(p2p, "Local request to reject connection attempts by peer "
4173 		MACSTR, MAC2STR(peer_addr));
4174 	if (dev == NULL) {
4175 		p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
4176 		return -1;
4177 	}
4178 	dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
4179 	dev->flags |= P2P_DEV_USER_REJECTED;
4180 	return 0;
4181 }
4182 
4183 
4184 const char * p2p_wps_method_text(enum p2p_wps_method method)
4185 {
4186 	switch (method) {
4187 	case WPS_NOT_READY:
4188 		return "not-ready";
4189 	case WPS_PIN_DISPLAY:
4190 		return "Display";
4191 	case WPS_PIN_KEYPAD:
4192 		return "Keypad";
4193 	case WPS_PBC:
4194 		return "PBC";
4195 	case WPS_NFC:
4196 		return "NFC";
4197 	case WPS_P2PS:
4198 		return "P2PS";
4199 	}
4200 
4201 	return "??";
4202 }
4203 
4204 
4205 static const char * p2p_go_state_text(enum p2p_go_state go_state)
4206 {
4207 	switch (go_state) {
4208 	case UNKNOWN_GO:
4209 		return "unknown";
4210 	case LOCAL_GO:
4211 		return "local";
4212 	case  REMOTE_GO:
4213 		return "remote";
4214 	}
4215 
4216 	return "??";
4217 }
4218 
4219 
4220 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
4221 					       const u8 *addr, int next)
4222 {
4223 	struct p2p_device *dev;
4224 
4225 	if (addr)
4226 		dev = p2p_get_device(p2p, addr);
4227 	else
4228 		dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4229 
4230 	if (dev && next) {
4231 		dev = dl_list_first(&dev->list, struct p2p_device, list);
4232 		if (&dev->list == &p2p->devices)
4233 			dev = NULL;
4234 	}
4235 
4236 	if (dev == NULL)
4237 		return NULL;
4238 
4239 	return &dev->info;
4240 }
4241 
4242 
4243 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
4244 			  char *buf, size_t buflen)
4245 {
4246 	struct p2p_device *dev;
4247 	int res;
4248 	char *pos, *end;
4249 	struct os_reltime now;
4250 
4251 	if (info == NULL)
4252 		return -1;
4253 
4254 	dev = (struct p2p_device *) (((u8 *) info) -
4255 				     offsetof(struct p2p_device, info));
4256 
4257 	pos = buf;
4258 	end = buf + buflen;
4259 
4260 	os_get_reltime(&now);
4261 	res = os_snprintf(pos, end - pos,
4262 			  "age=%d\n"
4263 			  "listen_freq=%d\n"
4264 			  "wps_method=%s\n"
4265 			  "interface_addr=" MACSTR "\n"
4266 			  "member_in_go_dev=" MACSTR "\n"
4267 			  "member_in_go_iface=" MACSTR "\n"
4268 			  "go_neg_req_sent=%d\n"
4269 			  "go_state=%s\n"
4270 			  "dialog_token=%u\n"
4271 			  "intended_addr=" MACSTR "\n"
4272 			  "country=%c%c\n"
4273 			  "oper_freq=%d\n"
4274 			  "req_config_methods=0x%x\n"
4275 			  "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
4276 			  "status=%d\n"
4277 			  "invitation_reqs=%u\n",
4278 			  (int) (now.sec - dev->last_seen.sec),
4279 			  dev->listen_freq,
4280 			  p2p_wps_method_text(dev->wps_method),
4281 			  MAC2STR(dev->interface_addr),
4282 			  MAC2STR(dev->member_in_go_dev),
4283 			  MAC2STR(dev->member_in_go_iface),
4284 			  dev->go_neg_req_sent,
4285 			  p2p_go_state_text(dev->go_state),
4286 			  dev->dialog_token,
4287 			  MAC2STR(dev->intended_addr),
4288 			  dev->country[0] ? dev->country[0] : '_',
4289 			  dev->country[1] ? dev->country[1] : '_',
4290 			  dev->oper_freq,
4291 			  dev->req_config_methods,
4292 			  dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
4293 			  "[PROBE_REQ_ONLY]" : "",
4294 			  dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
4295 			  dev->flags & P2P_DEV_NOT_YET_READY ?
4296 			  "[NOT_YET_READY]" : "",
4297 			  dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
4298 			  "[PD_PEER_DISPLAY]" : "",
4299 			  dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
4300 			  "[PD_PEER_KEYPAD]" : "",
4301 			  dev->flags & P2P_DEV_PD_PEER_P2PS ?
4302 			  "[PD_PEER_P2PS]" : "",
4303 			  dev->flags & P2P_DEV_USER_REJECTED ?
4304 			  "[USER_REJECTED]" : "",
4305 			  dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
4306 			  "[PEER_WAITING_RESPONSE]" : "",
4307 			  dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
4308 			  "[PREFER_PERSISTENT_GROUP]" : "",
4309 			  dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
4310 			  "[WAIT_GO_NEG_RESPONSE]" : "",
4311 			  dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
4312 			  "[WAIT_GO_NEG_CONFIRM]" : "",
4313 			  dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
4314 			  "[GROUP_CLIENT_ONLY]" : "",
4315 			  dev->flags & P2P_DEV_FORCE_FREQ ?
4316 			  "[FORCE_FREQ]" : "",
4317 			  dev->flags & P2P_DEV_PD_FOR_JOIN ?
4318 			  "[PD_FOR_JOIN]" : "",
4319 			  dev->flags & P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT ?
4320 			  "[LAST_SEEN_AS_GROUP_CLIENT]" : "",
4321 			  dev->status,
4322 			  dev->invitation_reqs);
4323 	if (os_snprintf_error(end - pos, res))
4324 		return pos - buf;
4325 	pos += res;
4326 
4327 	if (dev->ext_listen_period) {
4328 		res = os_snprintf(pos, end - pos,
4329 				  "ext_listen_period=%u\n"
4330 				  "ext_listen_interval=%u\n",
4331 				  dev->ext_listen_period,
4332 				  dev->ext_listen_interval);
4333 		if (os_snprintf_error(end - pos, res))
4334 			return pos - buf;
4335 		pos += res;
4336 	}
4337 
4338 	if (dev->oper_ssid_len) {
4339 		res = os_snprintf(pos, end - pos,
4340 				  "oper_ssid=%s\n",
4341 				  wpa_ssid_txt(dev->oper_ssid,
4342 					       dev->oper_ssid_len));
4343 		if (os_snprintf_error(end - pos, res))
4344 			return pos - buf;
4345 		pos += res;
4346 	}
4347 
4348 #ifdef CONFIG_WIFI_DISPLAY
4349 	if (dev->info.wfd_subelems) {
4350 		res = os_snprintf(pos, end - pos, "wfd_subelems=");
4351 		if (os_snprintf_error(end - pos, res))
4352 			return pos - buf;
4353 		pos += res;
4354 
4355 		pos += wpa_snprintf_hex(pos, end - pos,
4356 					wpabuf_head(dev->info.wfd_subelems),
4357 					wpabuf_len(dev->info.wfd_subelems));
4358 
4359 		res = os_snprintf(pos, end - pos, "\n");
4360 		if (os_snprintf_error(end - pos, res))
4361 			return pos - buf;
4362 		pos += res;
4363 	}
4364 #endif /* CONFIG_WIFI_DISPLAY */
4365 
4366 	return pos - buf;
4367 }
4368 
4369 
4370 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
4371 {
4372 	return p2p_get_device(p2p, addr) != NULL;
4373 }
4374 
4375 
4376 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
4377 {
4378 	if (enabled) {
4379 		p2p_dbg(p2p, "Client discoverability enabled");
4380 		p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4381 	} else {
4382 		p2p_dbg(p2p, "Client discoverability disabled");
4383 		p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4384 	}
4385 }
4386 
4387 
4388 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
4389 					      u32 duration2, u32 interval2)
4390 {
4391 	struct wpabuf *req;
4392 	struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
4393 	u8 *len;
4394 
4395 	req = wpabuf_alloc(100);
4396 	if (req == NULL)
4397 		return NULL;
4398 
4399 	if (duration1 || interval1) {
4400 		os_memset(&desc1, 0, sizeof(desc1));
4401 		desc1.count_type = 1;
4402 		desc1.duration = duration1;
4403 		desc1.interval = interval1;
4404 		ptr1 = &desc1;
4405 
4406 		if (duration2 || interval2) {
4407 			os_memset(&desc2, 0, sizeof(desc2));
4408 			desc2.count_type = 2;
4409 			desc2.duration = duration2;
4410 			desc2.interval = interval2;
4411 			ptr2 = &desc2;
4412 		}
4413 	}
4414 
4415 	p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
4416 	len = p2p_buf_add_ie_hdr(req);
4417 	p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
4418 	p2p_buf_update_ie_hdr(req, len);
4419 
4420 	return req;
4421 }
4422 
4423 
4424 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
4425 		     const u8 *own_interface_addr, unsigned int freq,
4426 		     u32 duration1, u32 interval1, u32 duration2,
4427 		     u32 interval2)
4428 {
4429 	struct wpabuf *req;
4430 
4431 	p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
4432 		" (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
4433 		"dur2=%u int2=%u",
4434 		MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
4435 		freq, duration1, interval1, duration2, interval2);
4436 
4437 	req = p2p_build_presence_req(duration1, interval1, duration2,
4438 				     interval2);
4439 	if (req == NULL)
4440 		return -1;
4441 
4442 	p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4443 	if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
4444 			    go_interface_addr,
4445 			    wpabuf_head(req), wpabuf_len(req), 200) < 0) {
4446 		p2p_dbg(p2p, "Failed to send Action frame");
4447 	}
4448 	wpabuf_free(req);
4449 
4450 	return 0;
4451 }
4452 
4453 
4454 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
4455 					       size_t noa_len, u8 dialog_token)
4456 {
4457 	struct wpabuf *resp;
4458 	u8 *len;
4459 
4460 	resp = wpabuf_alloc(100 + noa_len);
4461 	if (resp == NULL)
4462 		return NULL;
4463 
4464 	p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
4465 	len = p2p_buf_add_ie_hdr(resp);
4466 	p2p_buf_add_status(resp, status);
4467 	if (noa) {
4468 		wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
4469 		wpabuf_put_le16(resp, noa_len);
4470 		wpabuf_put_data(resp, noa, noa_len);
4471 	} else
4472 		p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
4473 	p2p_buf_update_ie_hdr(resp, len);
4474 
4475 	return resp;
4476 }
4477 
4478 
4479 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
4480 				     const u8 *sa, const u8 *data, size_t len,
4481 				     int rx_freq)
4482 {
4483 	struct p2p_message msg;
4484 	u8 status;
4485 	struct wpabuf *resp;
4486 	size_t g;
4487 	struct p2p_group *group = NULL;
4488 	int parsed = 0;
4489 	u8 noa[50];
4490 	int noa_len;
4491 
4492 	p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
4493 
4494 	for (g = 0; g < p2p->num_groups; g++) {
4495 		if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
4496 			      ETH_ALEN) == 0) {
4497 			group = p2p->groups[g];
4498 			break;
4499 		}
4500 	}
4501 	if (group == NULL) {
4502 		p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
4503 			MACSTR, MAC2STR(da));
4504 		return;
4505 	}
4506 
4507 	if (p2p_parse(data, len, &msg) < 0) {
4508 		p2p_dbg(p2p, "Failed to parse P2P Presence Request");
4509 		status = P2P_SC_FAIL_INVALID_PARAMS;
4510 		goto fail;
4511 	}
4512 	parsed = 1;
4513 
4514 	if (msg.noa == NULL) {
4515 		p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
4516 		status = P2P_SC_FAIL_INVALID_PARAMS;
4517 		goto fail;
4518 	}
4519 
4520 	status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
4521 
4522 fail:
4523 	if (p2p->cfg->get_noa)
4524 		noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
4525 					    sizeof(noa));
4526 	else
4527 		noa_len = -1;
4528 	resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
4529 				       noa_len > 0 ? noa_len : 0,
4530 				       msg.dialog_token);
4531 	if (parsed)
4532 		p2p_parse_free(&msg);
4533 	if (resp == NULL)
4534 		return;
4535 
4536 	p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4537 	if (p2p_send_action(p2p, rx_freq, sa, da, da,
4538 			    wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
4539 		p2p_dbg(p2p, "Failed to send Action frame");
4540 	}
4541 	wpabuf_free(resp);
4542 }
4543 
4544 
4545 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
4546 				      const u8 *sa, const u8 *data, size_t len)
4547 {
4548 	struct p2p_message msg;
4549 
4550 	p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
4551 
4552 	if (p2p_parse(data, len, &msg) < 0) {
4553 		p2p_dbg(p2p, "Failed to parse P2P Presence Response");
4554 		return;
4555 	}
4556 
4557 	if (msg.status == NULL || msg.noa == NULL) {
4558 		p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
4559 		p2p_parse_free(&msg);
4560 		return;
4561 	}
4562 
4563 	if (p2p->cfg->presence_resp) {
4564 		p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status,
4565 					msg.noa, msg.noa_len);
4566 	}
4567 
4568 	if (*msg.status) {
4569 		p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
4570 			*msg.status);
4571 		p2p_parse_free(&msg);
4572 		return;
4573 	}
4574 
4575 	p2p_dbg(p2p, "P2P Presence Request was accepted");
4576 	wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
4577 		    msg.noa, msg.noa_len);
4578 	/* TODO: process NoA */
4579 	p2p_parse_free(&msg);
4580 }
4581 
4582 
4583 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
4584 {
4585 	struct p2p_data *p2p = eloop_ctx;
4586 
4587 	if (p2p->ext_listen_interval) {
4588 		/* Schedule next extended listen timeout */
4589 		eloop_register_timeout(p2p->ext_listen_interval_sec,
4590 				       p2p->ext_listen_interval_usec,
4591 				       p2p_ext_listen_timeout, p2p, NULL);
4592 	}
4593 
4594 	if ((p2p->cfg->is_p2p_in_progress &&
4595 	     p2p->cfg->is_p2p_in_progress(p2p->cfg->cb_ctx)) ||
4596 	    (p2p->pending_action_state == P2P_PENDING_PD &&
4597 	     p2p->pd_retries > 0)) {
4598 		p2p_dbg(p2p, "Operation in progress - skip Extended Listen timeout (%s)",
4599 			p2p_state_txt(p2p->state));
4600 		return;
4601 	}
4602 
4603 	if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
4604 		/*
4605 		 * This should not really happen, but it looks like the Listen
4606 		 * command may fail is something else (e.g., a scan) was
4607 		 * running at an inconvenient time. As a workaround, allow new
4608 		 * Extended Listen operation to be started.
4609 		 */
4610 		p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
4611 		p2p->ext_listen_only = 0;
4612 		p2p_set_state(p2p, P2P_IDLE);
4613 	}
4614 
4615 	if (p2p->state != P2P_IDLE) {
4616 		p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
4617 		return;
4618 	}
4619 
4620 	p2p_dbg(p2p, "Extended Listen timeout");
4621 	p2p->ext_listen_only = 1;
4622 	if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
4623 		p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
4624 		p2p->ext_listen_only = 0;
4625 	}
4626 }
4627 
4628 
4629 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
4630 		   unsigned int interval)
4631 {
4632 	if (period > 65535 || interval > 65535 || period > interval ||
4633 	    (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
4634 		p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
4635 			period, interval);
4636 		return -1;
4637 	}
4638 
4639 	eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
4640 
4641 	if (interval == 0) {
4642 		p2p_dbg(p2p, "Disabling Extended Listen Timing");
4643 		p2p->ext_listen_period = 0;
4644 		p2p->ext_listen_interval = 0;
4645 		return 0;
4646 	}
4647 
4648 	p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
4649 		period, interval);
4650 	p2p->ext_listen_period = period;
4651 	p2p->ext_listen_interval = interval;
4652 	p2p->ext_listen_interval_sec = interval / 1000;
4653 	p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
4654 
4655 	eloop_register_timeout(p2p->ext_listen_interval_sec,
4656 			       p2p->ext_listen_interval_usec,
4657 			       p2p_ext_listen_timeout, p2p, NULL);
4658 
4659 	return 0;
4660 }
4661 
4662 
4663 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4664 		      const u8 *ie, size_t ie_len)
4665 {
4666 	struct p2p_message msg;
4667 
4668 	if (bssid == NULL || ie == NULL)
4669 		return;
4670 
4671 	os_memset(&msg, 0, sizeof(msg));
4672 	if (p2p_parse_ies(ie, ie_len, &msg))
4673 		return;
4674 	if (msg.minor_reason_code == NULL) {
4675 		p2p_parse_free(&msg);
4676 		return;
4677 	}
4678 
4679 	p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
4680 		" reason_code=%u minor_reason_code=%u",
4681 		MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4682 
4683 	p2p_parse_free(&msg);
4684 }
4685 
4686 
4687 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4688 			const u8 *ie, size_t ie_len)
4689 {
4690 	struct p2p_message msg;
4691 
4692 	if (bssid == NULL || ie == NULL)
4693 		return;
4694 
4695 	os_memset(&msg, 0, sizeof(msg));
4696 	if (p2p_parse_ies(ie, ie_len, &msg))
4697 		return;
4698 	if (msg.minor_reason_code == NULL) {
4699 		p2p_parse_free(&msg);
4700 		return;
4701 	}
4702 
4703 	p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
4704 		" reason_code=%u minor_reason_code=%u",
4705 		MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4706 
4707 	p2p_parse_free(&msg);
4708 }
4709 
4710 
4711 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
4712 {
4713 	if (enabled) {
4714 		p2p_dbg(p2p, "Managed P2P Device operations enabled");
4715 		p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
4716 	} else {
4717 		p2p_dbg(p2p, "Managed P2P Device operations disabled");
4718 		p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
4719 	}
4720 }
4721 
4722 
4723 int p2p_config_get_random_social(struct p2p_config *p2p, u8 *op_class,
4724 				 u8 *op_channel)
4725 {
4726 	return p2p_channel_random_social(&p2p->channels, op_class, op_channel);
4727 }
4728 
4729 
4730 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel,
4731 			   u8 forced)
4732 {
4733 	if (p2p_channel_to_freq(reg_class, channel) < 0)
4734 		return -1;
4735 
4736 	/*
4737 	 * Listen channel was set in configuration or set by control interface;
4738 	 * cannot override it.
4739 	 */
4740 	if (p2p->cfg->channel_forced && forced == 0) {
4741 		p2p_dbg(p2p,
4742 			"Listen channel was previously configured - do not override based on optimization");
4743 		return -1;
4744 	}
4745 
4746 	p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
4747 		reg_class, channel);
4748 
4749 	if (p2p->state == P2P_IDLE) {
4750 		p2p->cfg->reg_class = reg_class;
4751 		p2p->cfg->channel = channel;
4752 		p2p->cfg->channel_forced = forced;
4753 	} else {
4754 		p2p_dbg(p2p, "Defer setting listen channel");
4755 		p2p->pending_reg_class = reg_class;
4756 		p2p->pending_channel = channel;
4757 		p2p->pending_channel_forced = forced;
4758 	}
4759 
4760 	return 0;
4761 }
4762 
4763 
4764 u8 p2p_get_listen_channel(struct p2p_data *p2p)
4765 {
4766 	return p2p->cfg->channel;
4767 }
4768 
4769 
4770 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
4771 {
4772 	p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
4773 	if (postfix == NULL) {
4774 		p2p->cfg->ssid_postfix_len = 0;
4775 		return 0;
4776 	}
4777 	if (len > sizeof(p2p->cfg->ssid_postfix))
4778 		return -1;
4779 	os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
4780 	p2p->cfg->ssid_postfix_len = len;
4781 	return 0;
4782 }
4783 
4784 
4785 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
4786 			 int cfg_op_channel)
4787 {
4788 	if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
4789 		return -1;
4790 
4791 	p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
4792 		op_reg_class, op_channel);
4793 	p2p->cfg->op_reg_class = op_reg_class;
4794 	p2p->cfg->op_channel = op_channel;
4795 	p2p->cfg->cfg_op_channel = cfg_op_channel;
4796 	return 0;
4797 }
4798 
4799 
4800 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
4801 		      const struct p2p_channel *pref_chan)
4802 {
4803 	struct p2p_channel *n;
4804 
4805 	if (pref_chan) {
4806 		n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
4807 		if (n == NULL)
4808 			return -1;
4809 		os_memcpy(n, pref_chan,
4810 			  num_pref_chan * sizeof(struct p2p_channel));
4811 	} else
4812 		n = NULL;
4813 
4814 	os_free(p2p->cfg->pref_chan);
4815 	p2p->cfg->pref_chan = n;
4816 	p2p->cfg->num_pref_chan = num_pref_chan;
4817 
4818 	return 0;
4819 }
4820 
4821 
4822 int p2p_set_no_go_freq(struct p2p_data *p2p,
4823 		       const struct wpa_freq_range_list *list)
4824 {
4825 	struct wpa_freq_range *tmp;
4826 
4827 	if (list == NULL || list->num == 0) {
4828 		os_free(p2p->no_go_freq.range);
4829 		p2p->no_go_freq.range = NULL;
4830 		p2p->no_go_freq.num = 0;
4831 		return 0;
4832 	}
4833 
4834 	tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
4835 	if (tmp == NULL)
4836 		return -1;
4837 	os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
4838 	os_free(p2p->no_go_freq.range);
4839 	p2p->no_go_freq.range = tmp;
4840 	p2p->no_go_freq.num = list->num;
4841 	p2p_dbg(p2p, "Updated no GO chan list");
4842 
4843 	return 0;
4844 }
4845 
4846 
4847 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4848 			   u8 *iface_addr)
4849 {
4850 	struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4851 	if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4852 		return -1;
4853 	os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4854 	return 0;
4855 }
4856 
4857 
4858 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4859 			   u8 *dev_addr)
4860 {
4861 	struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4862 	if (dev == NULL)
4863 		return -1;
4864 	os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4865 	return 0;
4866 }
4867 
4868 
4869 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4870 {
4871 	os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4872 	if (is_zero_ether_addr(p2p->peer_filter))
4873 		p2p_dbg(p2p, "Disable peer filter");
4874 	else
4875 		p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4876 			MAC2STR(p2p->peer_filter));
4877 }
4878 
4879 
4880 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4881 {
4882 	p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
4883 	if (p2p->cross_connect == enabled)
4884 		return;
4885 	p2p->cross_connect = enabled;
4886 	/* TODO: may need to tear down any action group where we are GO(?) */
4887 }
4888 
4889 
4890 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4891 {
4892 	struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4893 	if (dev == NULL)
4894 		return -1;
4895 	if (dev->oper_freq <= 0)
4896 		return -1;
4897 	return dev->oper_freq;
4898 }
4899 
4900 
4901 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4902 {
4903 	p2p_dbg(p2p, "Intra BSS distribution %s",
4904 		enabled ? "enabled" : "disabled");
4905 	p2p->cfg->p2p_intra_bss = enabled;
4906 }
4907 
4908 
4909 void p2p_update_channel_list(struct p2p_data *p2p,
4910 			     const struct p2p_channels *chan,
4911 			     const struct p2p_channels *cli_chan)
4912 {
4913 	p2p_dbg(p2p, "Update channel list");
4914 	os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4915 	p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4916 	os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4917 		  sizeof(struct p2p_channels));
4918 	p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
4919 }
4920 
4921 
4922 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4923 		    const u8 *src, const u8 *bssid, const u8 *buf,
4924 		    size_t len, unsigned int wait_time)
4925 {
4926 	if (p2p->p2p_scan_running) {
4927 		p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
4928 		if (p2p->after_scan_tx) {
4929 			p2p_dbg(p2p, "Dropped previous pending Action frame TX");
4930 			os_free(p2p->after_scan_tx);
4931 		}
4932 		p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4933 					       len);
4934 		if (p2p->after_scan_tx == NULL)
4935 			return -1;
4936 		p2p->after_scan_tx->freq = freq;
4937 		os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4938 		os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4939 		os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4940 		p2p->after_scan_tx->len = len;
4941 		p2p->after_scan_tx->wait_time = wait_time;
4942 		os_memcpy(p2p->after_scan_tx + 1, buf, len);
4943 		return 0;
4944 	}
4945 
4946 	return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4947 				     buf, len, wait_time);
4948 }
4949 
4950 
4951 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4952 			   int freq_overall)
4953 {
4954 	p2p_dbg(p2p, "Best channel: 2.4 GHz: %d,  5 GHz: %d,  overall: %d",
4955 		freq_24, freq_5, freq_overall);
4956 	p2p->best_freq_24 = freq_24;
4957 	p2p->best_freq_5 = freq_5;
4958 	p2p->best_freq_overall = freq_overall;
4959 }
4960 
4961 
4962 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4963 {
4964 	p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
4965 	p2p->own_freq_preference = freq;
4966 }
4967 
4968 
4969 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4970 {
4971 	if (p2p == NULL || p2p->go_neg_peer == NULL)
4972 		return NULL;
4973 	return p2p->go_neg_peer->info.p2p_device_addr;
4974 }
4975 
4976 
4977 const struct p2p_peer_info *
4978 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4979 {
4980 	struct p2p_device *dev;
4981 
4982 	if (addr) {
4983 		dev = p2p_get_device(p2p, addr);
4984 		if (!dev)
4985 			return NULL;
4986 
4987 		if (!next) {
4988 			if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4989 				return NULL;
4990 
4991 			return &dev->info;
4992 		} else {
4993 			do {
4994 				dev = dl_list_first(&dev->list,
4995 						    struct p2p_device,
4996 						    list);
4997 				if (!dev || &dev->list == &p2p->devices)
4998 					return NULL;
4999 			} while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
5000 		}
5001 	} else {
5002 		dev = dl_list_first(&p2p->devices, struct p2p_device, list);
5003 		if (!dev)
5004 			return NULL;
5005 		while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
5006 			dev = dl_list_first(&dev->list,
5007 					    struct p2p_device,
5008 					    list);
5009 			if (!dev || &dev->list == &p2p->devices)
5010 				return NULL;
5011 		}
5012 	}
5013 
5014 	return &dev->info;
5015 }
5016 
5017 
5018 int p2p_in_progress(struct p2p_data *p2p)
5019 {
5020 	if (p2p == NULL)
5021 		return 0;
5022 	if (p2p->state == P2P_SEARCH)
5023 		return 2;
5024 	return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
5025 }
5026 
5027 
5028 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
5029 			    u8 client_timeout)
5030 {
5031 	if (p2p) {
5032 		p2p->go_timeout = go_timeout;
5033 		p2p->client_timeout = client_timeout;
5034 	}
5035 }
5036 
5037 
5038 #ifdef CONFIG_WIFI_DISPLAY
5039 
5040 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
5041 {
5042 	size_t g;
5043 	struct p2p_group *group;
5044 
5045 	for (g = 0; g < p2p->num_groups; g++) {
5046 		group = p2p->groups[g];
5047 		p2p_group_force_beacon_update_ies(group);
5048 	}
5049 }
5050 
5051 
5052 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
5053 {
5054 	wpabuf_free(p2p->wfd_ie_beacon);
5055 	p2p->wfd_ie_beacon = ie;
5056 	p2p_update_wfd_ie_groups(p2p);
5057 	return 0;
5058 }
5059 
5060 
5061 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
5062 {
5063 	wpabuf_free(p2p->wfd_ie_probe_req);
5064 	p2p->wfd_ie_probe_req = ie;
5065 	return 0;
5066 }
5067 
5068 
5069 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
5070 {
5071 	wpabuf_free(p2p->wfd_ie_probe_resp);
5072 	p2p->wfd_ie_probe_resp = ie;
5073 	p2p_update_wfd_ie_groups(p2p);
5074 	return 0;
5075 }
5076 
5077 
5078 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
5079 {
5080 	wpabuf_free(p2p->wfd_ie_assoc_req);
5081 	p2p->wfd_ie_assoc_req = ie;
5082 	return 0;
5083 }
5084 
5085 
5086 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
5087 {
5088 	wpabuf_free(p2p->wfd_ie_invitation);
5089 	p2p->wfd_ie_invitation = ie;
5090 	return 0;
5091 }
5092 
5093 
5094 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
5095 {
5096 	wpabuf_free(p2p->wfd_ie_prov_disc_req);
5097 	p2p->wfd_ie_prov_disc_req = ie;
5098 	return 0;
5099 }
5100 
5101 
5102 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
5103 {
5104 	wpabuf_free(p2p->wfd_ie_prov_disc_resp);
5105 	p2p->wfd_ie_prov_disc_resp = ie;
5106 	return 0;
5107 }
5108 
5109 
5110 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
5111 {
5112 	wpabuf_free(p2p->wfd_ie_go_neg);
5113 	p2p->wfd_ie_go_neg = ie;
5114 	return 0;
5115 }
5116 
5117 
5118 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
5119 {
5120 	wpabuf_free(p2p->wfd_dev_info);
5121 	if (elem) {
5122 		p2p->wfd_dev_info = wpabuf_dup(elem);
5123 		if (p2p->wfd_dev_info == NULL)
5124 			return -1;
5125 	} else
5126 		p2p->wfd_dev_info = NULL;
5127 
5128 	return 0;
5129 }
5130 
5131 
5132 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
5133 {
5134 	wpabuf_free(p2p->wfd_assoc_bssid);
5135 	if (elem) {
5136 		p2p->wfd_assoc_bssid = wpabuf_dup(elem);
5137 		if (p2p->wfd_assoc_bssid == NULL)
5138 			return -1;
5139 	} else
5140 		p2p->wfd_assoc_bssid = NULL;
5141 
5142 	return 0;
5143 }
5144 
5145 
5146 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
5147 				  const struct wpabuf *elem)
5148 {
5149 	wpabuf_free(p2p->wfd_coupled_sink_info);
5150 	if (elem) {
5151 		p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
5152 		if (p2p->wfd_coupled_sink_info == NULL)
5153 			return -1;
5154 	} else
5155 		p2p->wfd_coupled_sink_info = NULL;
5156 
5157 	return 0;
5158 }
5159 
5160 #endif /* CONFIG_WIFI_DISPLAY */
5161 
5162 
5163 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
5164 		     int max_disc_tu)
5165 {
5166 	if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
5167 		return -1;
5168 
5169 	p2p->min_disc_int = min_disc_int;
5170 	p2p->max_disc_int = max_disc_int;
5171 	p2p->max_disc_tu = max_disc_tu;
5172 	p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
5173 		min_disc_int, max_disc_int, max_disc_tu);
5174 
5175 	return 0;
5176 }
5177 
5178 
5179 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
5180 {
5181 	va_list ap;
5182 	char buf[500];
5183 
5184 	if (!p2p->cfg->debug_print)
5185 		return;
5186 
5187 	va_start(ap, fmt);
5188 	vsnprintf(buf, sizeof(buf), fmt, ap);
5189 	buf[sizeof(buf) - 1] = '\0';
5190 	va_end(ap);
5191 	p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
5192 }
5193 
5194 
5195 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
5196 {
5197 	va_list ap;
5198 	char buf[500];
5199 
5200 	if (!p2p->cfg->debug_print)
5201 		return;
5202 
5203 	va_start(ap, fmt);
5204 	vsnprintf(buf, sizeof(buf), fmt, ap);
5205 	buf[sizeof(buf) - 1] = '\0';
5206 	va_end(ap);
5207 	p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
5208 }
5209 
5210 
5211 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
5212 {
5213 	va_list ap;
5214 	char buf[500];
5215 
5216 	if (!p2p->cfg->debug_print)
5217 		return;
5218 
5219 	va_start(ap, fmt);
5220 	vsnprintf(buf, sizeof(buf), fmt, ap);
5221 	buf[sizeof(buf) - 1] = '\0';
5222 	va_end(ap);
5223 	p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
5224 }
5225 
5226 
5227 void p2p_loop_on_known_peers(struct p2p_data *p2p,
5228 			     void (*peer_callback)(struct p2p_peer_info *peer,
5229 						   void *user_data),
5230 			     void *user_data)
5231 {
5232 	struct p2p_device *dev, *n;
5233 
5234 	dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
5235 		peer_callback(&dev->info, user_data);
5236 	}
5237 }
5238 
5239 
5240 #ifdef CONFIG_WPS_NFC
5241 
5242 static struct wpabuf * p2p_build_nfc_handover(struct p2p_data *p2p,
5243 					      int client_freq,
5244 					      const u8 *go_dev_addr,
5245 					      const u8 *ssid, size_t ssid_len)
5246 {
5247 	struct wpabuf *buf;
5248 	u8 op_class, channel;
5249 	enum p2p_role_indication role = P2P_DEVICE_NOT_IN_GROUP;
5250 
5251 	buf = wpabuf_alloc(1000);
5252 	if (buf == NULL)
5253 		return NULL;
5254 
5255 	op_class = p2p->cfg->reg_class;
5256 	channel = p2p->cfg->channel;
5257 
5258 	p2p_buf_add_capability(buf, p2p->dev_capab &
5259 			       ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
5260 	p2p_buf_add_device_info(buf, p2p, NULL);
5261 
5262 	if (p2p->num_groups > 0) {
5263 		int freq = p2p_group_get_freq(p2p->groups[0]);
5264 		role = P2P_GO_IN_A_GROUP;
5265 		if (p2p_freq_to_channel(freq, &op_class, &channel) < 0) {
5266 			p2p_dbg(p2p,
5267 				"Unknown GO operating frequency %d MHz for NFC handover",
5268 				freq);
5269 			wpabuf_free(buf);
5270 			return NULL;
5271 		}
5272 	} else if (client_freq > 0) {
5273 		role = P2P_CLIENT_IN_A_GROUP;
5274 		if (p2p_freq_to_channel(client_freq, &op_class, &channel) < 0) {
5275 			p2p_dbg(p2p,
5276 				"Unknown client operating frequency %d MHz for NFC handover",
5277 				client_freq);
5278 			wpabuf_free(buf);
5279 			return NULL;
5280 		}
5281 	}
5282 
5283 	p2p_buf_add_oob_go_neg_channel(buf, p2p->cfg->country, op_class,
5284 				       channel, role);
5285 
5286 	if (p2p->num_groups > 0) {
5287 		/* Limit number of clients to avoid very long message */
5288 		p2p_buf_add_group_info(p2p->groups[0], buf, 5);
5289 		p2p_group_buf_add_id(p2p->groups[0], buf);
5290 	} else if (client_freq > 0 &&
5291 		   go_dev_addr && !is_zero_ether_addr(go_dev_addr) &&
5292 		   ssid && ssid_len > 0) {
5293 		/*
5294 		 * Add the optional P2P Group ID to indicate in which group this
5295 		 * device is a P2P Client.
5296 		 */
5297 		p2p_buf_add_group_id(buf, go_dev_addr, ssid, ssid_len);
5298 	}
5299 
5300 	return buf;
5301 }
5302 
5303 
5304 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
5305 					   int client_freq,
5306 					   const u8 *go_dev_addr,
5307 					   const u8 *ssid, size_t ssid_len)
5308 {
5309 	return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5310 				      ssid_len);
5311 }
5312 
5313 
5314 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
5315 					   int client_freq,
5316 					   const u8 *go_dev_addr,
5317 					   const u8 *ssid, size_t ssid_len)
5318 {
5319 	return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5320 				      ssid_len);
5321 }
5322 
5323 
5324 int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
5325 					struct p2p_nfc_params *params)
5326 {
5327 	struct p2p_message msg;
5328 	struct p2p_device *dev;
5329 	const u8 *p2p_dev_addr;
5330 	int freq;
5331 	enum p2p_role_indication role;
5332 
5333 	params->next_step = NO_ACTION;
5334 
5335 	if (p2p_parse_ies_separate(params->wsc_attr, params->wsc_len,
5336 				   params->p2p_attr, params->p2p_len, &msg)) {
5337 		p2p_dbg(p2p, "Failed to parse WSC/P2P attributes from NFC");
5338 		p2p_parse_free(&msg);
5339 		return -1;
5340 	}
5341 
5342 	if (msg.p2p_device_addr)
5343 		p2p_dev_addr = msg.p2p_device_addr;
5344 	else if (msg.device_id)
5345 		p2p_dev_addr = msg.device_id;
5346 	else {
5347 		p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
5348 		p2p_parse_free(&msg);
5349 		return -1;
5350 	}
5351 
5352 	if (msg.oob_dev_password) {
5353 		os_memcpy(params->oob_dev_pw, msg.oob_dev_password,
5354 			  msg.oob_dev_password_len);
5355 		params->oob_dev_pw_len = msg.oob_dev_password_len;
5356 	}
5357 
5358 	dev = p2p_create_device(p2p, p2p_dev_addr);
5359 	if (dev == NULL) {
5360 		p2p_parse_free(&msg);
5361 		return -1;
5362 	}
5363 
5364 	params->peer = &dev->info;
5365 
5366 	os_get_reltime(&dev->last_seen);
5367 	dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
5368 	p2p_copy_wps_info(p2p, dev, 0, &msg);
5369 
5370 	if (!msg.oob_go_neg_channel) {
5371 		p2p_dbg(p2p, "OOB GO Negotiation Channel attribute not included");
5372 		p2p_parse_free(&msg);
5373 		return -1;
5374 	}
5375 
5376 	if (msg.oob_go_neg_channel[3] == 0 &&
5377 	    msg.oob_go_neg_channel[4] == 0)
5378 		freq = 0;
5379 	else
5380 		freq = p2p_channel_to_freq(msg.oob_go_neg_channel[3],
5381 					   msg.oob_go_neg_channel[4]);
5382 	if (freq < 0) {
5383 		p2p_dbg(p2p, "Unknown peer OOB GO Neg channel");
5384 		p2p_parse_free(&msg);
5385 		return -1;
5386 	}
5387 	role = msg.oob_go_neg_channel[5];
5388 
5389 	if (role == P2P_GO_IN_A_GROUP) {
5390 		p2p_dbg(p2p, "Peer OOB GO operating channel: %u MHz", freq);
5391 		params->go_freq = freq;
5392 	} else if (role == P2P_CLIENT_IN_A_GROUP) {
5393 		p2p_dbg(p2p, "Peer (client) OOB GO operating channel: %u MHz",
5394 			freq);
5395 		params->go_freq = freq;
5396 	} else
5397 		p2p_dbg(p2p, "Peer OOB GO Neg channel: %u MHz", freq);
5398 	dev->oob_go_neg_freq = freq;
5399 
5400 	if (!params->sel && role != P2P_GO_IN_A_GROUP) {
5401 		freq = p2p_channel_to_freq(p2p->cfg->reg_class,
5402 					   p2p->cfg->channel);
5403 		if (freq < 0) {
5404 			p2p_dbg(p2p, "Own listen channel not known");
5405 			p2p_parse_free(&msg);
5406 			return -1;
5407 		}
5408 		p2p_dbg(p2p, "Use own Listen channel as OOB GO Neg channel: %u MHz", freq);
5409 		dev->oob_go_neg_freq = freq;
5410 	}
5411 
5412 	if (msg.group_id) {
5413 		os_memcpy(params->go_dev_addr, msg.group_id, ETH_ALEN);
5414 		params->go_ssid_len = msg.group_id_len - ETH_ALEN;
5415 		os_memcpy(params->go_ssid, msg.group_id + ETH_ALEN,
5416 			  params->go_ssid_len);
5417 	}
5418 
5419 	if (dev->flags & P2P_DEV_USER_REJECTED) {
5420 		p2p_dbg(p2p, "Do not report rejected device");
5421 		p2p_parse_free(&msg);
5422 		return 0;
5423 	}
5424 
5425 	if (!(dev->flags & P2P_DEV_REPORTED)) {
5426 		p2p->cfg->dev_found(p2p->cfg->cb_ctx, p2p_dev_addr, &dev->info,
5427 				    !(dev->flags & P2P_DEV_REPORTED_ONCE));
5428 		dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
5429 	}
5430 	p2p_parse_free(&msg);
5431 
5432 	if (role == P2P_GO_IN_A_GROUP && p2p->num_groups > 0)
5433 		params->next_step = BOTH_GO;
5434 	else if (role == P2P_GO_IN_A_GROUP)
5435 		params->next_step = JOIN_GROUP;
5436 	else if (role == P2P_CLIENT_IN_A_GROUP) {
5437 		dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
5438 		params->next_step = PEER_CLIENT;
5439 	} else if (p2p->num_groups > 0)
5440 		params->next_step = AUTH_JOIN;
5441 	else if (params->sel)
5442 		params->next_step = INIT_GO_NEG;
5443 	else
5444 		params->next_step = RESP_GO_NEG;
5445 
5446 	return 0;
5447 }
5448 
5449 
5450 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
5451 				      int go_intent,
5452 				      const u8 *own_interface_addr)
5453 {
5454 
5455 	p2p->authorized_oob_dev_pw_id = dev_pw_id;
5456 	if (dev_pw_id == 0) {
5457 		p2p_dbg(p2p, "NFC OOB Password unauthorized for static handover");
5458 		return;
5459 	}
5460 
5461 	p2p_dbg(p2p, "NFC OOB Password (id=%u) authorized for static handover",
5462 		dev_pw_id);
5463 
5464 	p2p->go_intent = go_intent;
5465 	os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
5466 }
5467 
5468 #endif /* CONFIG_WPS_NFC */
5469 
5470 
5471 int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len)
5472 {
5473 	if (len < 8 || len > 63)
5474 		return -1;
5475 	p2p->cfg->passphrase_len = len;
5476 	return 0;
5477 }
5478 
5479 
5480 void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem)
5481 {
5482 	p2p->vendor_elem = vendor_elem;
5483 }
5484 
5485 
5486 void p2p_go_neg_wait_timeout(void *eloop_ctx, void *timeout_ctx)
5487 {
5488 	struct p2p_data *p2p = eloop_ctx;
5489 
5490 	p2p_dbg(p2p,
5491 		"Timeout on waiting peer to become ready for GO Negotiation");
5492 	p2p_go_neg_failed(p2p, -1);
5493 }
5494 
5495 
5496 void p2p_set_own_pref_freq_list(struct p2p_data *p2p,
5497 				const unsigned int *pref_freq_list,
5498 				unsigned int size)
5499 {
5500 	unsigned int i;
5501 
5502 	if (size > P2P_MAX_PREF_CHANNELS)
5503 		size = P2P_MAX_PREF_CHANNELS;
5504 	p2p->num_pref_freq = size;
5505 	for (i = 0; i < size; i++) {
5506 		p2p->pref_freq_list[i] = pref_freq_list[i];
5507 		p2p_dbg(p2p, "Own preferred frequency list[%u]=%u MHz",
5508 			i, p2p->pref_freq_list[i]);
5509 	}
5510 }
5511 
5512 
5513 struct wpabuf * p2p_build_probe_resp_template(struct p2p_data *p2p,
5514 					      unsigned int freq)
5515 {
5516 	struct wpabuf *ies, *buf;
5517 	u8 addr[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
5518 	int ret;
5519 
5520 	ies = p2p_build_probe_resp_ies(p2p, NULL, 0);
5521 	if (!ies) {
5522 		wpa_printf(MSG_ERROR,
5523 			   "CTRL: Failed to build Probe Response IEs");
5524 		return NULL;
5525 	}
5526 
5527 	buf = wpabuf_alloc(200 + wpabuf_len(ies));
5528 	if (!buf) {
5529 		wpabuf_free(ies);
5530 		return NULL;
5531 	}
5532 
5533 	ret = p2p_build_probe_resp_buf(p2p, buf, ies, addr, freq);
5534 	wpabuf_free(ies);
5535 	if (ret) {
5536 		wpabuf_free(buf);
5537 		return NULL;
5538 	}
5539 
5540 	return buf;
5541 }
5542