1 /*
2 * Wi-Fi Direct - P2P module
3 * Copyright (c) 2009-2010, Atheros Communications
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 *
9 * Alternatively, this software may be distributed under the terms of BSD
10 * license.
11 *
12 * See README and COPYING for more details.
13 */
14
15 #include "includes.h"
16
17 #include "common.h"
18 #include "eloop.h"
19 #include "common/ieee802_11_defs.h"
20 #include "common/ieee802_11_common.h"
21 #include "wps/wps_i.h"
22 #include "p2p_i.h"
23 #include "p2p.h"
24
25
26 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx);
27 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev);
28 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
29 const u8 *sa, const u8 *data, size_t len,
30 int rx_freq);
31 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
32 const u8 *sa, const u8 *data,
33 size_t len);
34 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx);
35 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx);
36
37
38 /*
39 * p2p_scan recovery timeout
40 *
41 * Many drivers are using 30 second timeout on scan results. Allow a bit larger
42 * timeout for this to avoid hitting P2P timeout unnecessarily.
43 */
44 #define P2P_SCAN_TIMEOUT 35
45
46 /**
47 * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer
48 * entries will be removed
49 */
50 #define P2P_PEER_EXPIRATION_AGE 300
51
52 #define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2)
53
p2p_expire_peers(struct p2p_data * p2p)54 static void p2p_expire_peers(struct p2p_data *p2p)
55 {
56 struct p2p_device *dev, *n;
57 struct os_time now;
58
59 os_get_time(&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 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Expiring old peer "
64 "entry " MACSTR, MAC2STR(dev->info.p2p_device_addr));
65 dl_list_del(&dev->list);
66 p2p_device_free(p2p, dev);
67 }
68 }
69
70
p2p_expiration_timeout(void * eloop_ctx,void * timeout_ctx)71 static void p2p_expiration_timeout(void *eloop_ctx, void *timeout_ctx)
72 {
73 struct p2p_data *p2p = eloop_ctx;
74 p2p_expire_peers(p2p);
75 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
76 p2p_expiration_timeout, p2p, NULL);
77 }
78
79
p2p_state_txt(int state)80 static const char * p2p_state_txt(int state)
81 {
82 switch (state) {
83 case P2P_IDLE:
84 return "IDLE";
85 case P2P_SEARCH:
86 return "SEARCH";
87 case P2P_CONNECT:
88 return "CONNECT";
89 case P2P_CONNECT_LISTEN:
90 return "CONNECT_LISTEN";
91 case P2P_GO_NEG:
92 return "GO_NEG";
93 case P2P_LISTEN_ONLY:
94 return "LISTEN_ONLY";
95 case P2P_WAIT_PEER_CONNECT:
96 return "WAIT_PEER_CONNECT";
97 case P2P_WAIT_PEER_IDLE:
98 return "WAIT_PEER_IDLE";
99 case P2P_SD_DURING_FIND:
100 return "SD_DURING_FIND";
101 case P2P_PROVISIONING:
102 return "PROVISIONING";
103 case P2P_PD_DURING_FIND:
104 return "PD_DURING_FIND";
105 case P2P_INVITE:
106 return "INVITE";
107 case P2P_INVITE_LISTEN:
108 return "INVITE_LISTEN";
109 default:
110 return "?";
111 }
112 }
113
114
p2p_set_state(struct p2p_data * p2p,int new_state)115 void p2p_set_state(struct p2p_data *p2p, int new_state)
116 {
117 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: State %s -> %s",
118 p2p_state_txt(p2p->state), p2p_state_txt(new_state));
119 p2p->state = new_state;
120 }
121
122
p2p_set_timeout(struct p2p_data * p2p,unsigned int sec,unsigned int usec)123 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
124 {
125 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
126 "P2P: Set timeout (state=%s): %u.%06u sec",
127 p2p_state_txt(p2p->state), sec, usec);
128 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
129 eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
130 }
131
132
p2p_clear_timeout(struct p2p_data * p2p)133 void p2p_clear_timeout(struct p2p_data *p2p)
134 {
135 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Clear timeout (state=%s)",
136 p2p_state_txt(p2p->state));
137 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
138 }
139
140
p2p_go_neg_failed(struct p2p_data * p2p,struct p2p_device * peer,int status)141 void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
142 int status)
143 {
144 struct p2p_go_neg_results res;
145 p2p_clear_timeout(p2p);
146 p2p_set_state(p2p, P2P_IDLE);
147 p2p->go_neg_peer = NULL;
148
149 os_memset(&res, 0, sizeof(res));
150 res.status = status;
151 if (peer) {
152 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr,
153 ETH_ALEN);
154 os_memcpy(res.peer_interface_addr, peer->intended_addr,
155 ETH_ALEN);
156 }
157 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
158 }
159
160
p2p_listen_in_find(struct p2p_data * p2p)161 static void p2p_listen_in_find(struct p2p_data *p2p)
162 {
163 unsigned int r, tu;
164 int freq;
165 struct wpabuf *ies;
166
167 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
168 "P2P: Starting short listen state (state=%s)",
169 p2p_state_txt(p2p->state));
170
171 freq = p2p_channel_to_freq(p2p->cfg->country, p2p->cfg->reg_class,
172 p2p->cfg->channel);
173 if (freq < 0) {
174 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
175 "P2P: Unknown regulatory class/channel");
176 return;
177 }
178
179 os_get_random((u8 *) &r, sizeof(r));
180 tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
181 p2p->min_disc_int) * 100;
182
183 p2p->pending_listen_freq = freq;
184 p2p->pending_listen_sec = 0;
185 p2p->pending_listen_usec = 1024 * tu;
186
187 ies = p2p_build_probe_resp_ies(p2p);
188 if (ies == NULL)
189 return;
190
191 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
192 ies) < 0) {
193 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
194 "P2P: Failed to start listen mode");
195 p2p->pending_listen_freq = 0;
196 }
197 wpabuf_free(ies);
198 }
199
200
p2p_listen(struct p2p_data * p2p,unsigned int timeout)201 int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
202 {
203 int freq;
204 struct wpabuf *ies;
205
206 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
207 "P2P: Going to listen(only) state");
208
209 freq = p2p_channel_to_freq(p2p->cfg->country, p2p->cfg->reg_class,
210 p2p->cfg->channel);
211 if (freq < 0) {
212 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
213 "P2P: Unknown regulatory class/channel");
214 return -1;
215 }
216
217 p2p->pending_listen_freq = freq;
218 p2p->pending_listen_sec = timeout / 1000;
219 p2p->pending_listen_usec = (timeout % 1000) * 1000;
220
221 if (p2p->p2p_scan_running) {
222 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
223 "P2P: p2p_scan running - delay start of listen state");
224 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
225 return 0;
226 }
227
228 ies = p2p_build_probe_resp_ies(p2p);
229 if (ies == NULL)
230 return -1;
231
232 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
233 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
234 "P2P: Failed to start listen mode");
235 p2p->pending_listen_freq = 0;
236 wpabuf_free(ies);
237 return -1;
238 }
239 wpabuf_free(ies);
240
241 p2p_set_state(p2p, P2P_LISTEN_ONLY);
242
243 return 0;
244 }
245
246
p2p_device_clear_reported(struct p2p_data * p2p)247 static void p2p_device_clear_reported(struct p2p_data *p2p)
248 {
249 struct p2p_device *dev;
250 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list)
251 dev->flags &= ~P2P_DEV_REPORTED;
252 }
253
254
255 /**
256 * p2p_get_device - Fetch a peer entry
257 * @p2p: P2P module context from p2p_init()
258 * @addr: P2P Device Address of the peer
259 * Returns: Pointer to the device entry or %NULL if not found
260 */
p2p_get_device(struct p2p_data * p2p,const u8 * addr)261 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
262 {
263 struct p2p_device *dev;
264 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
265 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
266 return dev;
267 }
268 return NULL;
269 }
270
271
272 /**
273 * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
274 * @p2p: P2P module context from p2p_init()
275 * @addr: P2P Interface Address of the peer
276 * Returns: Pointer to the device entry or %NULL if not found
277 */
p2p_get_device_interface(struct p2p_data * p2p,const u8 * addr)278 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
279 const u8 *addr)
280 {
281 struct p2p_device *dev;
282 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
283 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
284 return dev;
285 }
286 return NULL;
287 }
288
289
290 /**
291 * p2p_create_device - Create a peer entry
292 * @p2p: P2P module context from p2p_init()
293 * @addr: P2P Device Address of the peer
294 * Returns: Pointer to the device entry or %NULL on failure
295 *
296 * If there is already an entry for the peer, it will be returned instead of
297 * creating a new one.
298 */
p2p_create_device(struct p2p_data * p2p,const u8 * addr)299 static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
300 const u8 *addr)
301 {
302 struct p2p_device *dev, *oldest = NULL;
303 size_t count = 0;
304
305 dev = p2p_get_device(p2p, addr);
306 if (dev)
307 return dev;
308
309 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
310 count++;
311 if (oldest == NULL ||
312 os_time_before(&dev->last_seen, &oldest->last_seen))
313 oldest = dev;
314 }
315 if (count + 1 > p2p->cfg->max_peers && oldest) {
316 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
317 "P2P: Remove oldest peer entry to make room for a new "
318 "peer");
319 dl_list_del(&oldest->list);
320 p2p_device_free(p2p, oldest);
321 }
322
323 dev = os_zalloc(sizeof(*dev));
324 if (dev == NULL)
325 return NULL;
326 dl_list_add(&p2p->devices, &dev->list);
327 os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
328
329 return dev;
330 }
331
332
p2p_copy_client_info(struct p2p_device * dev,struct p2p_client_info * cli)333 static void p2p_copy_client_info(struct p2p_device *dev,
334 struct p2p_client_info *cli)
335 {
336 os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len);
337 dev->info.device_name[cli->dev_name_len] = '\0';
338 dev->info.dev_capab = cli->dev_capab;
339 dev->info.config_methods = cli->config_methods;
340 os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
341 dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
342 os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
343 dev->info.wps_sec_dev_type_list_len);
344 }
345
346
p2p_add_group_clients(struct p2p_data * p2p,const u8 * go_dev_addr,const u8 * go_interface_addr,int freq,const u8 * gi,size_t gi_len)347 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
348 const u8 *go_interface_addr, int freq,
349 const u8 *gi, size_t gi_len)
350 {
351 struct p2p_group_info info;
352 size_t c;
353 struct p2p_device *dev;
354
355 if (gi == NULL)
356 return 0;
357
358 if (p2p_group_info_parse(gi, gi_len, &info) < 0)
359 return -1;
360
361 /*
362 * Clear old data for this group; if the devices are still in the
363 * group, the information will be restored in the loop following this.
364 */
365 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
366 if (os_memcpy(dev->member_in_go_iface, go_interface_addr,
367 ETH_ALEN) == 0) {
368 os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
369 os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
370 }
371 }
372
373 for (c = 0; c < info.num_clients; c++) {
374 struct p2p_client_info *cli = &info.client[c];
375 dev = p2p_get_device(p2p, cli->p2p_device_addr);
376 if (dev) {
377 /*
378 * Update information only if we have not received this
379 * directly from the client.
380 */
381 if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
382 P2P_DEV_PROBE_REQ_ONLY))
383 p2p_copy_client_info(dev, cli);
384 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
385 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
386 }
387 } else {
388 dev = p2p_create_device(p2p, cli->p2p_device_addr);
389 if (dev == NULL)
390 continue;
391 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
392 p2p_copy_client_info(dev, cli);
393 dev->oper_freq = freq;
394 p2p->cfg->dev_found(p2p->cfg->cb_ctx,
395 dev->info.p2p_device_addr,
396 &dev->info, 1);
397 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
398 }
399
400 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
401 ETH_ALEN);
402 os_get_time(&dev->last_seen);
403 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
404 os_memcpy(dev->member_in_go_iface, go_interface_addr,
405 ETH_ALEN);
406 }
407
408 return 0;
409 }
410
411
p2p_copy_wps_info(struct p2p_device * dev,int probe_req,const struct p2p_message * msg)412 static void p2p_copy_wps_info(struct p2p_device *dev, int probe_req,
413 const struct p2p_message *msg)
414 {
415 os_memcpy(dev->info.device_name, msg->device_name,
416 sizeof(dev->info.device_name));
417
418 if (msg->manufacturer &&
419 msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
420 os_memset(dev->info.manufacturer, 0,
421 sizeof(dev->info.manufacturer));
422 os_memcpy(dev->info.manufacturer, msg->manufacturer,
423 msg->manufacturer_len);
424 }
425
426 if (msg->model_name &&
427 msg->model_name_len < sizeof(dev->info.model_name)) {
428 os_memset(dev->info.model_name, 0,
429 sizeof(dev->info.model_name));
430 os_memcpy(dev->info.model_name, msg->model_name,
431 msg->model_name_len);
432 }
433
434 if (msg->model_number &&
435 msg->model_number_len < sizeof(dev->info.model_number)) {
436 os_memset(dev->info.model_number, 0,
437 sizeof(dev->info.model_number));
438 os_memcpy(dev->info.model_number, msg->model_number,
439 msg->model_number_len);
440 }
441
442 if (msg->serial_number &&
443 msg->serial_number_len < sizeof(dev->info.serial_number)) {
444 os_memset(dev->info.serial_number, 0,
445 sizeof(dev->info.serial_number));
446 os_memcpy(dev->info.serial_number, msg->serial_number,
447 msg->serial_number_len);
448 }
449
450 if (msg->pri_dev_type)
451 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
452 sizeof(dev->info.pri_dev_type));
453 else if (msg->wps_pri_dev_type)
454 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
455 sizeof(dev->info.pri_dev_type));
456
457 if (msg->wps_sec_dev_type_list) {
458 os_memcpy(dev->info.wps_sec_dev_type_list,
459 msg->wps_sec_dev_type_list,
460 msg->wps_sec_dev_type_list_len);
461 dev->info.wps_sec_dev_type_list_len =
462 msg->wps_sec_dev_type_list_len;
463 }
464
465 if (msg->capability) {
466 dev->info.dev_capab = msg->capability[0];
467 dev->info.group_capab = msg->capability[1];
468 }
469
470 if (msg->ext_listen_timing) {
471 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
472 dev->ext_listen_interval =
473 WPA_GET_LE16(msg->ext_listen_timing + 2);
474 }
475
476 if (!probe_req) {
477 dev->info.config_methods = msg->config_methods ?
478 msg->config_methods : msg->wps_config_methods;
479 }
480 }
481
482
483 /**
484 * p2p_add_device - Add peer entries based on scan results
485 * @p2p: P2P module context from p2p_init()
486 * @addr: Source address of Beacon or Probe Response frame (may be either
487 * P2P Device Address or P2P Interface Address)
488 * @level: Signal level (signal strength of the received frame from the peer)
489 * @freq: Frequency on which the Beacon or Probe Response frame was received
490 * @ies: IEs from the Beacon or Probe Response frame
491 * @ies_len: Length of ies buffer in octets
492 * Returns: 0 on success, -1 on failure
493 *
494 * If the scan result is for a GO, the clients in the group will also be added
495 * to the peer table. This function can also be used with some other frames
496 * like Provision Discovery Request that contains P2P Capability and P2P Device
497 * Info attributes.
498 */
p2p_add_device(struct p2p_data * p2p,const u8 * addr,int freq,int level,const u8 * ies,size_t ies_len)499 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq, int level,
500 const u8 *ies, size_t ies_len)
501 {
502 struct p2p_device *dev;
503 struct p2p_message msg;
504 const u8 *p2p_dev_addr;
505 int i;
506
507 os_memset(&msg, 0, sizeof(msg));
508 if (p2p_parse_ies(ies, ies_len, &msg)) {
509 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
510 "P2P: Failed to parse P2P IE for a device entry");
511 p2p_parse_free(&msg);
512 return -1;
513 }
514
515 if (msg.p2p_device_addr)
516 p2p_dev_addr = msg.p2p_device_addr;
517 else if (msg.device_id)
518 p2p_dev_addr = msg.device_id;
519 else {
520 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
521 "P2P: Ignore scan data without P2P Device Info or "
522 "P2P Device Id");
523 p2p_parse_free(&msg);
524 return -1;
525 }
526
527 if (!is_zero_ether_addr(p2p->peer_filter) &&
528 os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
529 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Do not add peer "
530 "filter for " MACSTR " due to peer filter",
531 MAC2STR(p2p_dev_addr));
532 return 0;
533 }
534
535 dev = p2p_create_device(p2p, p2p_dev_addr);
536 if (dev == NULL) {
537 p2p_parse_free(&msg);
538 return -1;
539 }
540 os_get_time(&dev->last_seen);
541 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
542
543 if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
544 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
545 if (msg.ssid &&
546 (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
547 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
548 != 0)) {
549 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
550 dev->oper_ssid_len = msg.ssid[1];
551 }
552
553 if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
554 *msg.ds_params >= 1 && *msg.ds_params <= 14) {
555 int ds_freq;
556 if (*msg.ds_params == 14)
557 ds_freq = 2484;
558 else
559 ds_freq = 2407 + *msg.ds_params * 5;
560 if (freq != ds_freq) {
561 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
562 "P2P: Update Listen frequency based on DS "
563 "Parameter Set IE: %d -> %d MHz",
564 freq, ds_freq);
565 freq = ds_freq;
566 }
567 }
568
569 if (dev->listen_freq && dev->listen_freq != freq) {
570 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
571 "P2P: Update Listen frequency based on scan "
572 "results (" MACSTR " %d -> %d MHz (DS param %d)",
573 MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
574 freq, msg.ds_params ? *msg.ds_params : -1);
575 }
576 dev->listen_freq = freq;
577 #ifdef ANDROID_BRCM_P2P_PATCH
578 if(msg.group_info)
579 dev->go_state = REMOTE_GO;
580 #endif
581
582 if (msg.group_info)
583 dev->oper_freq = freq;
584 dev->info.level = level;
585
586 p2p_copy_wps_info(dev, 0, &msg);
587
588 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
589 wpabuf_free(dev->info.wps_vendor_ext[i]);
590 dev->info.wps_vendor_ext[i] = NULL;
591 }
592
593 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
594 if (msg.wps_vendor_ext[i] == NULL)
595 break;
596 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
597 msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
598 if (dev->info.wps_vendor_ext[i] == NULL)
599 break;
600 }
601
602 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq, msg.group_info,
603 msg.group_info_len);
604
605 p2p_parse_free(&msg);
606
607 if (p2p_pending_sd_req(p2p, dev))
608 dev->flags |= P2P_DEV_SD_SCHEDULE;
609
610 if (dev->flags & P2P_DEV_REPORTED)
611 return 0;
612
613 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
614 "P2P: Peer found with Listen frequency %d MHz", freq);
615 if (dev->flags & P2P_DEV_USER_REJECTED) {
616 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
617 "P2P: Do not report rejected device");
618 return 0;
619 }
620
621 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
622 !(dev->flags & P2P_DEV_REPORTED_ONCE));
623 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
624
625 return 0;
626 }
627
628
p2p_device_free(struct p2p_data * p2p,struct p2p_device * dev)629 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
630 {
631 int i;
632
633 if (p2p->go_neg_peer == dev) {
634 #ifdef ANDROID_BRCM_P2P_PATCH
635 p2p_go_neg_failed(p2p, dev, -1);
636 #endif
637 p2p->go_neg_peer = NULL;
638 }
639 if (p2p->invite_peer == dev)
640 p2p->invite_peer = NULL;
641 if (p2p->sd_peer == dev)
642 p2p->sd_peer = NULL;
643 if (p2p->pending_client_disc_go == dev)
644 p2p->pending_client_disc_go = NULL;
645
646 /* dev_lost() device, but only if it was previously dev_found() */
647 if (dev->flags & P2P_DEV_REPORTED_ONCE)
648 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
649 dev->info.p2p_device_addr);
650
651 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
652 wpabuf_free(dev->info.wps_vendor_ext[i]);
653 dev->info.wps_vendor_ext[i] = NULL;
654 }
655
656 os_free(dev);
657 }
658
659
p2p_get_next_prog_freq(struct p2p_data * p2p)660 static int p2p_get_next_prog_freq(struct p2p_data *p2p)
661 {
662 struct p2p_channels *c;
663 struct p2p_reg_class *cla;
664 size_t cl, ch;
665 int found = 0;
666 u8 reg_class;
667 u8 channel;
668 int freq;
669
670 c = &p2p->cfg->channels;
671 for (cl = 0; cl < c->reg_classes; cl++) {
672 cla = &c->reg_class[cl];
673 if (cla->reg_class != p2p->last_prog_scan_class)
674 continue;
675 for (ch = 0; ch < cla->channels; ch++) {
676 if (cla->channel[ch] == p2p->last_prog_scan_chan) {
677 found = 1;
678 break;
679 }
680 }
681 if (found)
682 break;
683 }
684
685 if (!found) {
686 /* Start from beginning */
687 reg_class = c->reg_class[0].reg_class;
688 channel = c->reg_class[0].channel[0];
689 } else {
690 /* Pick the next channel */
691 ch++;
692 if (ch == cla->channels) {
693 cl++;
694 if (cl == c->reg_classes)
695 cl = 0;
696 ch = 0;
697 }
698 reg_class = c->reg_class[cl].reg_class;
699 channel = c->reg_class[cl].channel[ch];
700 }
701
702 freq = p2p_channel_to_freq(p2p->cfg->country, reg_class, channel);
703 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Next progressive search "
704 "channel: reg_class %u channel %u -> %d MHz",
705 reg_class, channel, freq);
706 p2p->last_prog_scan_class = reg_class;
707 p2p->last_prog_scan_chan = channel;
708
709 if (freq == 2412 || freq == 2437 || freq == 2462)
710 return 0; /* No need to add social channels */
711 return freq;
712 }
713
714
p2p_search(struct p2p_data * p2p)715 static void p2p_search(struct p2p_data *p2p)
716 {
717 int freq = 0;
718 enum p2p_scan_type type;
719
720 if (p2p->drv_in_listen) {
721 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is still "
722 "in Listen state - wait for it to end before "
723 "continuing");
724 return;
725 }
726 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
727
728 if (p2p->go_neg_peer) {
729 /*
730 * Only scan the known listen frequency of the peer
731 * during GO Negotiation start.
732 */
733 freq = p2p->go_neg_peer->listen_freq;
734 if (freq <= 0)
735 freq = p2p->go_neg_peer->oper_freq;
736 type = P2P_SCAN_SPECIFIC;
737 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search "
738 "for freq %u (GO Neg)", freq);
739 } else if (p2p->invite_peer) {
740 /*
741 * Only scan the known listen frequency of the peer
742 * during Invite start.
743 */
744 freq = p2p->invite_peer->listen_freq;
745 if (freq <= 0)
746 freq = p2p->invite_peer->oper_freq;
747 type = P2P_SCAN_SPECIFIC;
748 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search "
749 "for freq %u (Invite)", freq);
750 } else if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
751 (freq = p2p_get_next_prog_freq(p2p)) > 0) {
752 type = P2P_SCAN_SOCIAL_PLUS_ONE;
753 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search "
754 "(+ freq %u)", freq);
755 } else {
756 type = P2P_SCAN_SOCIAL;
757 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search");
758 }
759
760 if (p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
761 p2p->num_req_dev_types, p2p->req_dev_types) < 0)
762 {
763 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
764 "P2P: Scan request failed");
765 p2p_continue_find(p2p);
766 } else {
767 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan");
768 p2p->p2p_scan_running = 1;
769 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
770 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
771 p2p, NULL);
772 }
773 }
774
775
p2p_find_timeout(void * eloop_ctx,void * timeout_ctx)776 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
777 {
778 struct p2p_data *p2p = eloop_ctx;
779 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Find timeout -> stop");
780 p2p_stop_find(p2p);
781 }
782
783
p2p_run_after_scan(struct p2p_data * p2p)784 static int p2p_run_after_scan(struct p2p_data *p2p)
785 {
786 struct p2p_device *dev;
787 enum p2p_after_scan op;
788
789 if (p2p->after_scan_tx) {
790 int ret;
791 /* TODO: schedule p2p_run_after_scan to be called from TX
792 * status callback(?) */
793 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send pending "
794 "Action frame at p2p_scan completion");
795 ret = p2p->cfg->send_action(p2p->cfg->cb_ctx,
796 p2p->after_scan_tx->freq,
797 p2p->after_scan_tx->dst,
798 p2p->after_scan_tx->src,
799 p2p->after_scan_tx->bssid,
800 (u8 *) (p2p->after_scan_tx + 1),
801 p2p->after_scan_tx->len,
802 p2p->after_scan_tx->wait_time);
803 os_free(p2p->after_scan_tx);
804 p2p->after_scan_tx = NULL;
805 return 1;
806 }
807
808 op = p2p->start_after_scan;
809 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
810 switch (op) {
811 case P2P_AFTER_SCAN_NOTHING:
812 break;
813 case P2P_AFTER_SCAN_LISTEN:
814 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously "
815 "requested Listen state");
816 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
817 p2p->pending_listen_usec / 1000);
818 return 1;
819 case P2P_AFTER_SCAN_CONNECT:
820 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously "
821 "requested connect with " MACSTR,
822 MAC2STR(p2p->after_scan_peer));
823 dev = p2p_get_device(p2p, p2p->after_scan_peer);
824 if (dev == NULL) {
825 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer not "
826 "known anymore");
827 break;
828 }
829 p2p_connect_send(p2p, dev);
830 return 1;
831 }
832
833 return 0;
834 }
835
836
p2p_scan_timeout(void * eloop_ctx,void * timeout_ctx)837 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
838 {
839 struct p2p_data *p2p = eloop_ctx;
840 int running;
841 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan timeout "
842 "(running=%d)", p2p->p2p_scan_running);
843 running = p2p->p2p_scan_running;
844 /* Make sure we recover from missed scan results callback */
845 p2p->p2p_scan_running = 0;
846
847 if (running)
848 p2p_run_after_scan(p2p);
849 }
850
851
p2p_free_req_dev_types(struct p2p_data * p2p)852 static void p2p_free_req_dev_types(struct p2p_data *p2p)
853 {
854 p2p->num_req_dev_types = 0;
855 os_free(p2p->req_dev_types);
856 p2p->req_dev_types = NULL;
857 }
858
859
p2p_find(struct p2p_data * p2p,unsigned int timeout,enum p2p_discovery_type type,unsigned int num_req_dev_types,const u8 * req_dev_types)860 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
861 enum p2p_discovery_type type,
862 unsigned int num_req_dev_types, const u8 *req_dev_types)
863 {
864 int res;
865
866 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting find (type=%d)",
867 type);
868 if (p2p->p2p_scan_running) {
869 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan is "
870 "already running");
871 }
872
873 p2p_free_req_dev_types(p2p);
874 if (req_dev_types && num_req_dev_types) {
875 p2p->req_dev_types = os_malloc(num_req_dev_types *
876 WPS_DEV_TYPE_LEN);
877 if (p2p->req_dev_types == NULL)
878 return -1;
879 os_memcpy(p2p->req_dev_types, req_dev_types,
880 num_req_dev_types * WPS_DEV_TYPE_LEN);
881 p2p->num_req_dev_types = num_req_dev_types;
882 }
883
884 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
885 p2p_clear_timeout(p2p);
886 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
887 p2p->find_type = type;
888 p2p_device_clear_reported(p2p);
889 p2p_set_state(p2p, P2P_SEARCH);
890 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
891 if (timeout)
892 eloop_register_timeout(timeout, 0, p2p_find_timeout,
893 p2p, NULL);
894 switch (type) {
895 case P2P_FIND_START_WITH_FULL:
896 case P2P_FIND_PROGRESSIVE:
897 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
898 p2p->num_req_dev_types,
899 p2p->req_dev_types);
900 break;
901 case P2P_FIND_ONLY_SOCIAL:
902 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
903 p2p->num_req_dev_types,
904 p2p->req_dev_types);
905 break;
906 default:
907 return -1;
908 }
909
910 if (res == 0) {
911 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan");
912 p2p->p2p_scan_running = 1;
913 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
914 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
915 p2p, NULL);
916 } else {
917 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start "
918 "p2p_scan");
919 }
920
921 return res;
922 }
923
924
p2p_stop_find_for_freq(struct p2p_data * p2p,int freq)925 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
926 {
927 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Stopping find");
928 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
929 p2p_clear_timeout(p2p);
930 p2p_set_state(p2p, P2P_IDLE);
931 p2p_free_req_dev_types(p2p);
932 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
933 p2p->go_neg_peer = NULL;
934 p2p->sd_peer = NULL;
935 p2p->invite_peer = NULL;
936 if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
937 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip stop_listen "
938 "since we are on correct channel for response");
939 return;
940 }
941 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
942 }
943
944
p2p_stop_find(struct p2p_data * p2p)945 void p2p_stop_find(struct p2p_data *p2p)
946 {
947 p2p_stop_find_for_freq(p2p, 0);
948 }
949
950
p2p_prepare_channel(struct p2p_data * p2p,unsigned int force_freq)951 static int p2p_prepare_channel(struct p2p_data *p2p, unsigned int force_freq)
952 {
953 if (force_freq) {
954 u8 op_reg_class, op_channel;
955 if (p2p_freq_to_channel(p2p->cfg->country, force_freq,
956 &op_reg_class, &op_channel) < 0) {
957 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
958 "P2P: Unsupported frequency %u MHz",
959 force_freq);
960 return -1;
961 }
962 if (!p2p_channels_includes(&p2p->cfg->channels, op_reg_class,
963 op_channel)) {
964 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
965 "P2P: Frequency %u MHz (oper_class %u "
966 "channel %u) not allowed for P2P",
967 force_freq, op_reg_class, op_channel);
968 return -1;
969 }
970 p2p->op_reg_class = op_reg_class;
971 p2p->op_channel = op_channel;
972 p2p->channels.reg_classes = 1;
973 p2p->channels.reg_class[0].channels = 1;
974 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
975 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
976 } else {
977 u8 op_reg_class, op_channel;
978
979 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
980 p2p_supported_freq(p2p, p2p->best_freq_overall) &&
981 p2p_freq_to_channel(p2p->cfg->country,
982 p2p->best_freq_overall,
983 &op_reg_class, &op_channel) == 0) {
984 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
985 "P2P: Select best overall channel as "
986 "operating channel preference");
987 p2p->op_reg_class = op_reg_class;
988 p2p->op_channel = op_channel;
989 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
990 p2p_supported_freq(p2p, p2p->best_freq_5) &&
991 p2p_freq_to_channel(p2p->cfg->country,
992 p2p->best_freq_5,
993 &op_reg_class, &op_channel) ==
994 0) {
995 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
996 "P2P: Select best 5 GHz channel as "
997 "operating channel preference");
998 p2p->op_reg_class = op_reg_class;
999 p2p->op_channel = op_channel;
1000 } else if (!p2p->cfg->cfg_op_channel &&
1001 p2p->best_freq_24 > 0 &&
1002 p2p_supported_freq(p2p, p2p->best_freq_24) &&
1003 p2p_freq_to_channel(p2p->cfg->country,
1004 p2p->best_freq_24,
1005 &op_reg_class, &op_channel) ==
1006 0) {
1007 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1008 "P2P: Select best 2.4 GHz channel as "
1009 "operating channel preference");
1010 p2p->op_reg_class = op_reg_class;
1011 p2p->op_channel = op_channel;
1012 } else {
1013 p2p->op_reg_class = p2p->cfg->op_reg_class;
1014 p2p->op_channel = p2p->cfg->op_channel;
1015 }
1016
1017 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1018 sizeof(struct p2p_channels));
1019 }
1020 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1021 "P2P: Own preference for operation channel: "
1022 "Operating Class %u Channel %u%s",
1023 p2p->op_reg_class, p2p->op_channel,
1024 force_freq ? " (forced)" : "");
1025
1026 return 0;
1027 }
1028
1029
p2p_connect(struct p2p_data * p2p,const u8 * peer_addr,enum p2p_wps_method wps_method,int go_intent,const u8 * own_interface_addr,unsigned int force_freq,int persistent_group)1030 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1031 enum p2p_wps_method wps_method,
1032 int go_intent, const u8 *own_interface_addr,
1033 unsigned int force_freq, int persistent_group)
1034 {
1035 struct p2p_device *dev;
1036
1037 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1038 "P2P: Request to start group negotiation - peer=" MACSTR
1039 " GO Intent=%d Intended Interface Address=" MACSTR
1040 " wps_method=%d persistent_group=%d",
1041 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1042 wps_method, persistent_group);
1043
1044 if (p2p_prepare_channel(p2p, force_freq) < 0)
1045 return -1;
1046
1047 dev = p2p_get_device(p2p, peer_addr);
1048 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1049 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1050 "P2P: Cannot connect to unknown P2P Device " MACSTR,
1051 MAC2STR(peer_addr));
1052 return -1;
1053 }
1054
1055 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1056 if (!(dev->info.dev_capab &
1057 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1058 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1059 "P2P: Cannot connect to P2P Device " MACSTR
1060 " that is in a group and is not discoverable",
1061 MAC2STR(peer_addr));
1062 return -1;
1063 }
1064 if (dev->oper_freq <= 0) {
1065 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1066 "P2P: Cannot connect to P2P Device " MACSTR
1067 " with incomplete information",
1068 MAC2STR(peer_addr));
1069 return -1;
1070 }
1071
1072 /*
1073 * First, try to connect directly. If the peer does not
1074 * acknowledge frames, assume it is sleeping and use device
1075 * discoverability via the GO at that point.
1076 */
1077 }
1078
1079 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1080 dev->flags &= ~P2P_DEV_USER_REJECTED;
1081 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1082 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1083 dev->connect_reqs = 0;
1084 dev->go_neg_req_sent = 0;
1085 dev->go_state = UNKNOWN_GO;
1086 if (persistent_group)
1087 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1088 else
1089 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_GROUP;
1090 p2p->go_intent = go_intent;
1091 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1092
1093 if (p2p->state != P2P_IDLE)
1094 p2p_stop_find(p2p);
1095
1096 if (p2p->after_scan_tx) {
1097 /*
1098 * We need to drop the pending frame to avoid issues with the
1099 * new GO Negotiation, e.g., when the pending frame was from a
1100 * previous attempt at starting a GO Negotiation.
1101 */
1102 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped "
1103 "previous pending Action frame TX that was waiting "
1104 "for p2p_scan completion");
1105 os_free(p2p->after_scan_tx);
1106 p2p->after_scan_tx = NULL;
1107 }
1108
1109 dev->wps_method = wps_method;
1110 dev->status = P2P_SC_SUCCESS;
1111
1112 if (force_freq)
1113 dev->flags |= P2P_DEV_FORCE_FREQ;
1114 else
1115 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1116
1117 if (p2p->p2p_scan_running) {
1118 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1119 "P2P: p2p_scan running - delay connect send");
1120 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1121 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1122 return 0;
1123 }
1124 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1125
1126 return p2p_connect_send(p2p, dev);
1127 }
1128
1129
p2p_authorize(struct p2p_data * p2p,const u8 * peer_addr,enum p2p_wps_method wps_method,int go_intent,const u8 * own_interface_addr,unsigned int force_freq,int persistent_group)1130 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1131 enum p2p_wps_method wps_method,
1132 int go_intent, const u8 *own_interface_addr,
1133 unsigned int force_freq, int persistent_group)
1134 {
1135 struct p2p_device *dev;
1136
1137 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1138 "P2P: Request to authorize group negotiation - peer=" MACSTR
1139 " GO Intent=%d Intended Interface Address=" MACSTR
1140 " wps_method=%d persistent_group=%d",
1141 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1142 wps_method, persistent_group);
1143
1144 if (p2p_prepare_channel(p2p, force_freq) < 0)
1145 return -1;
1146
1147 dev = p2p_get_device(p2p, peer_addr);
1148 if (dev == NULL) {
1149 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1150 "P2P: Cannot authorize unknown P2P Device " MACSTR,
1151 MAC2STR(peer_addr));
1152 return -1;
1153 }
1154
1155 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1156 dev->flags &= ~P2P_DEV_USER_REJECTED;
1157 dev->go_neg_req_sent = 0;
1158 dev->go_state = UNKNOWN_GO;
1159 if (persistent_group)
1160 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1161 else
1162 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_GROUP;
1163 p2p->go_intent = go_intent;
1164 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1165
1166 dev->wps_method = wps_method;
1167 dev->status = P2P_SC_SUCCESS;
1168
1169 if (force_freq)
1170 dev->flags |= P2P_DEV_FORCE_FREQ;
1171 else
1172 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1173
1174 return 0;
1175 }
1176
1177
p2p_add_dev_info(struct p2p_data * p2p,const u8 * addr,struct p2p_device * dev,struct p2p_message * msg)1178 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1179 struct p2p_device *dev, struct p2p_message *msg)
1180 {
1181 os_get_time(&dev->last_seen);
1182
1183 p2p_copy_wps_info(dev, 0, msg);
1184
1185 if (msg->listen_channel) {
1186 int freq;
1187 freq = p2p_channel_to_freq((char *) msg->listen_channel,
1188 msg->listen_channel[3],
1189 msg->listen_channel[4]);
1190 if (freq < 0) {
1191 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1192 "P2P: Unknown peer Listen channel: "
1193 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1194 msg->listen_channel[0],
1195 msg->listen_channel[1],
1196 msg->listen_channel[2],
1197 msg->listen_channel[3],
1198 msg->listen_channel[4]);
1199 } else {
1200 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update "
1201 "peer " MACSTR " Listen channel: %u -> %u MHz",
1202 MAC2STR(dev->info.p2p_device_addr),
1203 dev->listen_freq, freq);
1204 dev->listen_freq = freq;
1205 }
1206 }
1207
1208 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1209 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1210 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1211 "P2P: Completed device entry based on data from "
1212 "GO Negotiation Request");
1213 } else {
1214 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1215 "P2P: Created device entry based on GO Neg Req: "
1216 MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1217 "listen_freq=%d",
1218 MAC2STR(dev->info.p2p_device_addr),
1219 dev->info.dev_capab, dev->info.group_capab,
1220 dev->info.device_name, dev->listen_freq);
1221 }
1222
1223 dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1224
1225 if (dev->flags & P2P_DEV_USER_REJECTED) {
1226 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1227 "P2P: Do not report rejected device");
1228 return;
1229 }
1230
1231 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1232 !(dev->flags & P2P_DEV_REPORTED_ONCE));
1233 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1234 }
1235
1236
p2p_build_ssid(struct p2p_data * p2p,u8 * ssid,size_t * ssid_len)1237 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1238 {
1239 os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1240 p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1241 os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1242 p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1243 *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1244 }
1245
1246
p2p_go_params(struct p2p_data * p2p,struct p2p_go_neg_results * params)1247 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1248 {
1249 p2p_build_ssid(p2p, params->ssid, ¶ms->ssid_len);
1250 p2p_random(params->passphrase, 8);
1251 return 0;
1252 }
1253
1254
p2p_go_complete(struct p2p_data * p2p,struct p2p_device * peer)1255 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1256 {
1257 struct p2p_go_neg_results res;
1258 int go = peer->go_state == LOCAL_GO;
1259 struct p2p_channels intersection;
1260 int freqs;
1261 size_t i, j;
1262
1263 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1264 "P2P: GO Negotiation with " MACSTR " completed (%s will be "
1265 "GO)", MAC2STR(peer->info.p2p_device_addr),
1266 go ? "local end" : "peer");
1267
1268 os_memset(&res, 0, sizeof(res));
1269 res.role_go = go;
1270 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1271 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1272 res.wps_method = peer->wps_method;
1273 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP)
1274 res.persistent_group = 1;
1275
1276 if (go) {
1277 /* Setup AP mode for WPS provisioning */
1278 res.freq = p2p_channel_to_freq(p2p->cfg->country,
1279 p2p->op_reg_class,
1280 p2p->op_channel);
1281 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1282 res.ssid_len = p2p->ssid_len;
1283 p2p_random(res.passphrase, 8);
1284 } else {
1285 res.freq = peer->oper_freq;
1286 if (p2p->ssid_len) {
1287 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1288 res.ssid_len = p2p->ssid_len;
1289 }
1290 }
1291
1292 p2p_channels_intersect(&p2p->channels, &peer->channels,
1293 &intersection);
1294 freqs = 0;
1295 for (i = 0; i < intersection.reg_classes; i++) {
1296 struct p2p_reg_class *c = &intersection.reg_class[i];
1297 if (freqs + 1 == P2P_MAX_CHANNELS)
1298 break;
1299 for (j = 0; j < c->channels; j++) {
1300 int freq;
1301 if (freqs + 1 == P2P_MAX_CHANNELS)
1302 break;
1303 freq = p2p_channel_to_freq(peer->country, c->reg_class,
1304 c->channel[j]);
1305 if (freq < 0)
1306 continue;
1307 res.freq_list[freqs++] = freq;
1308 }
1309 }
1310
1311 res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1312
1313 p2p_clear_timeout(p2p);
1314 peer->go_neg_req_sent = 0;
1315 peer->wps_method = WPS_NOT_READY;
1316
1317 p2p_set_state(p2p, P2P_PROVISIONING);
1318 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1319 }
1320
1321
p2p_rx_p2p_action(struct p2p_data * p2p,const u8 * sa,const u8 * data,size_t len,int rx_freq)1322 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1323 const u8 *data, size_t len, int rx_freq)
1324 {
1325 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1326 "P2P: RX P2P Public Action from " MACSTR, MAC2STR(sa));
1327 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1328
1329 if (len < 1)
1330 return;
1331
1332 switch (data[0]) {
1333 case P2P_GO_NEG_REQ:
1334 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1335 break;
1336 case P2P_GO_NEG_RESP:
1337 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1338 break;
1339 case P2P_GO_NEG_CONF:
1340 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1341 break;
1342 case P2P_INVITATION_REQ:
1343 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1344 rx_freq);
1345 break;
1346 case P2P_INVITATION_RESP:
1347 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1348 break;
1349 case P2P_PROV_DISC_REQ:
1350 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1351 break;
1352 case P2P_PROV_DISC_RESP:
1353 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1354 break;
1355 case P2P_DEV_DISC_REQ:
1356 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1357 break;
1358 case P2P_DEV_DISC_RESP:
1359 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1360 break;
1361 default:
1362 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1363 "P2P: Unsupported P2P Public Action frame type %d",
1364 data[0]);
1365 break;
1366 }
1367 }
1368
1369
p2p_rx_action_public(struct p2p_data * p2p,const u8 * da,const u8 * sa,const u8 * bssid,const u8 * data,size_t len,int freq)1370 void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1371 const u8 *bssid, const u8 *data, size_t len,
1372 int freq)
1373 {
1374 if (len < 1)
1375 return;
1376
1377 switch (data[0]) {
1378 case WLAN_PA_VENDOR_SPECIFIC:
1379 data++;
1380 len--;
1381 if (len < 3)
1382 return;
1383 if (WPA_GET_BE24(data) != OUI_WFA)
1384 return;
1385
1386 data += 3;
1387 len -= 3;
1388 if (len < 1)
1389 return;
1390
1391 if (*data != P2P_OUI_TYPE)
1392 return;
1393
1394 p2p_rx_p2p_action(p2p, sa, data + 1, len - 1, freq);
1395 break;
1396 case WLAN_PA_GAS_INITIAL_REQ:
1397 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1398 break;
1399 case WLAN_PA_GAS_INITIAL_RESP:
1400 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1401 break;
1402 case WLAN_PA_GAS_COMEBACK_REQ:
1403 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1404 break;
1405 case WLAN_PA_GAS_COMEBACK_RESP:
1406 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1407 break;
1408 }
1409 }
1410
1411
p2p_rx_action(struct p2p_data * p2p,const u8 * da,const u8 * sa,const u8 * bssid,u8 category,const u8 * data,size_t len,int freq)1412 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1413 const u8 *bssid, u8 category,
1414 const u8 *data, size_t len, int freq)
1415 {
1416 if (category == WLAN_ACTION_PUBLIC) {
1417 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1418 return;
1419 }
1420
1421 if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1422 return;
1423
1424 if (len < 4)
1425 return;
1426
1427 if (WPA_GET_BE24(data) != OUI_WFA)
1428 return;
1429 data += 3;
1430 len -= 3;
1431
1432 if (*data != P2P_OUI_TYPE)
1433 return;
1434 data++;
1435 len--;
1436
1437 /* P2P action frame */
1438 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1439 "P2P: RX P2P Action from " MACSTR, MAC2STR(sa));
1440 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1441
1442 if (len < 1)
1443 return;
1444 switch (data[0]) {
1445 case P2P_NOA:
1446 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1447 "P2P: Received P2P Action - Notice of Absence");
1448 /* TODO */
1449 break;
1450 case P2P_PRESENCE_REQ:
1451 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1452 break;
1453 case P2P_PRESENCE_RESP:
1454 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1455 break;
1456 case P2P_GO_DISC_REQ:
1457 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1458 break;
1459 default:
1460 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1461 "P2P: Received P2P Action - unknown type %u", data[0]);
1462 break;
1463 }
1464 }
1465
1466
p2p_go_neg_start(void * eloop_ctx,void * timeout_ctx)1467 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1468 {
1469 struct p2p_data *p2p = eloop_ctx;
1470 if (p2p->go_neg_peer == NULL)
1471 return;
1472 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1473 p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1474 p2p_connect_send(p2p, p2p->go_neg_peer);
1475 }
1476
1477
p2p_invite_start(void * eloop_ctx,void * timeout_ctx)1478 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1479 {
1480 struct p2p_data *p2p = eloop_ctx;
1481 if (p2p->invite_peer == NULL)
1482 return;
1483 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1484 p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr);
1485 }
1486
1487
p2p_add_dev_from_probe_req(struct p2p_data * p2p,const u8 * addr,const u8 * ie,size_t ie_len)1488 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1489 const u8 *ie, size_t ie_len)
1490 {
1491 struct p2p_message msg;
1492 struct p2p_device *dev;
1493
1494 os_memset(&msg, 0, sizeof(msg));
1495 if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1496 {
1497 p2p_parse_free(&msg);
1498 return; /* not a P2P probe */
1499 }
1500
1501 if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
1502 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
1503 != 0) {
1504 /* The Probe Request is not part of P2P Device Discovery. It is
1505 * not known whether the source address of the frame is the P2P
1506 * Device Address or P2P Interface Address. Do not add a new
1507 * peer entry based on this frames.
1508 */
1509 p2p_parse_free(&msg);
1510 return;
1511 }
1512
1513 dev = p2p_get_device(p2p, addr);
1514 if (dev) {
1515 if (dev->country[0] == 0 && msg.listen_channel)
1516 os_memcpy(dev->country, msg.listen_channel, 3);
1517 p2p_parse_free(&msg);
1518 return; /* already known */
1519 }
1520
1521 dev = p2p_create_device(p2p, addr);
1522 if (dev == NULL) {
1523 p2p_parse_free(&msg);
1524 return;
1525 }
1526
1527 os_get_time(&dev->last_seen);
1528 dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
1529
1530 if (msg.listen_channel) {
1531 os_memcpy(dev->country, msg.listen_channel, 3);
1532 dev->listen_freq = p2p_channel_to_freq(dev->country,
1533 msg.listen_channel[3],
1534 msg.listen_channel[4]);
1535 }
1536
1537 p2p_copy_wps_info(dev, 1, &msg);
1538
1539 p2p_parse_free(&msg);
1540
1541 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1542 "P2P: Created device entry based on Probe Req: " MACSTR
1543 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
1544 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
1545 dev->info.group_capab, dev->info.device_name,
1546 dev->listen_freq);
1547 }
1548
1549
p2p_add_dev_from_go_neg_req(struct p2p_data * p2p,const u8 * addr,struct p2p_message * msg)1550 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
1551 const u8 *addr,
1552 struct p2p_message *msg)
1553 {
1554 struct p2p_device *dev;
1555
1556 dev = p2p_get_device(p2p, addr);
1557 if (dev) {
1558 os_get_time(&dev->last_seen);
1559 return dev; /* already known */
1560 }
1561
1562 dev = p2p_create_device(p2p, addr);
1563 if (dev == NULL)
1564 return NULL;
1565
1566 p2p_add_dev_info(p2p, addr, dev, msg);
1567
1568 return dev;
1569 }
1570
1571
dev_type_match(const u8 * dev_type,const u8 * req_dev_type)1572 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
1573 {
1574 if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
1575 return 1;
1576 if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
1577 WPA_GET_BE32(&req_dev_type[2]) == 0 &&
1578 WPA_GET_BE16(&req_dev_type[6]) == 0)
1579 return 1; /* Category match with wildcard OUI/sub-category */
1580 return 0;
1581 }
1582
1583
dev_type_list_match(const u8 * dev_type,const u8 * req_dev_type[],size_t num_req_dev_type)1584 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
1585 size_t num_req_dev_type)
1586 {
1587 size_t i;
1588 for (i = 0; i < num_req_dev_type; i++) {
1589 if (dev_type_match(dev_type, req_dev_type[i]))
1590 return 1;
1591 }
1592 return 0;
1593 }
1594
1595
1596 /**
1597 * p2p_match_dev_type - Match local device type with requested type
1598 * @p2p: P2P module context from p2p_init()
1599 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1600 * Returns: 1 on match, 0 on mismatch
1601 *
1602 * This function can be used to match the Requested Device Type attribute in
1603 * WPS IE with the local device types for deciding whether to reply to a Probe
1604 * Request frame.
1605 */
p2p_match_dev_type(struct p2p_data * p2p,struct wpabuf * wps)1606 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
1607 {
1608 struct wps_parse_attr attr;
1609 size_t i;
1610
1611 if (wps_parse_msg(wps, &attr))
1612 return 1; /* assume no Requested Device Type attributes */
1613
1614 if (attr.num_req_dev_type == 0)
1615 return 1; /* no Requested Device Type attributes -> match */
1616
1617 if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
1618 attr.num_req_dev_type))
1619 return 1; /* Own Primary Device Type matches */
1620
1621 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++)
1622 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
1623 attr.req_dev_type,
1624 attr.num_req_dev_type))
1625 return 1; /* Own Secondary Device Type matches */
1626
1627 /* No matching device type found */
1628 return 0;
1629 }
1630
1631
p2p_build_probe_resp_ies(struct p2p_data * p2p)1632 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
1633 {
1634 struct wpabuf *buf;
1635 u8 *len;
1636
1637 buf = wpabuf_alloc(1000);
1638 if (buf == NULL)
1639 return NULL;
1640
1641 p2p_build_wps_ie(p2p, buf, DEV_PW_DEFAULT, 1);
1642
1643 /* P2P IE */
1644 len = p2p_buf_add_ie_hdr(buf);
1645 p2p_buf_add_capability(buf, p2p->dev_capab, 0);
1646 if (p2p->ext_listen_interval)
1647 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
1648 p2p->ext_listen_interval);
1649 p2p_buf_add_device_info(buf, p2p, NULL);
1650 p2p_buf_update_ie_hdr(buf, len);
1651
1652 return buf;
1653 }
1654
1655
p2p_reply_probe(struct p2p_data * p2p,const u8 * addr,const u8 * ie,size_t ie_len)1656 static void p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *ie,
1657 size_t ie_len)
1658 {
1659 struct ieee802_11_elems elems;
1660 struct wpabuf *buf;
1661 struct ieee80211_mgmt *resp;
1662 struct wpabuf *wps;
1663 struct wpabuf *ies;
1664
1665 if (!p2p->in_listen || !p2p->drv_in_listen) {
1666 /* not in Listen state - ignore Probe Request */
1667 return;
1668 }
1669
1670 if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
1671 ParseFailed) {
1672 /* Ignore invalid Probe Request frames */
1673 return;
1674 }
1675
1676 if (elems.p2p == NULL) {
1677 /* not a P2P probe - ignore it */
1678 return;
1679 }
1680
1681 if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
1682 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
1683 0) {
1684 /* not using P2P Wildcard SSID - ignore */
1685 return;
1686 }
1687
1688 /* Check Requested Device Type match */
1689 wps = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA);
1690 if (wps && !p2p_match_dev_type(p2p, wps)) {
1691 wpabuf_free(wps);
1692 /* No match with Requested Device Type */
1693 return;
1694 }
1695 wpabuf_free(wps);
1696
1697 if (!p2p->cfg->send_probe_resp)
1698 return; /* Response generated elsewhere */
1699
1700 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1701 "P2P: Reply to P2P Probe Request in Listen state");
1702
1703 /*
1704 * We do not really have a specific BSS that this frame is advertising,
1705 * so build a frame that has some information in valid format. This is
1706 * really only used for discovery purposes, not to learn exact BSS
1707 * parameters.
1708 */
1709 ies = p2p_build_probe_resp_ies(p2p);
1710 if (ies == NULL)
1711 return;
1712
1713 buf = wpabuf_alloc(200 + wpabuf_len(ies));
1714 if (buf == NULL) {
1715 wpabuf_free(ies);
1716 return;
1717 }
1718
1719 resp = NULL;
1720 resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
1721
1722 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
1723 (WLAN_FC_STYPE_PROBE_RESP << 4));
1724 os_memcpy(resp->da, addr, ETH_ALEN);
1725 os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
1726 os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
1727 resp->u.probe_resp.beacon_int = host_to_le16(100);
1728 /* hardware or low-level driver will setup seq_ctrl and timestamp */
1729 resp->u.probe_resp.capab_info =
1730 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
1731 WLAN_CAPABILITY_PRIVACY |
1732 WLAN_CAPABILITY_SHORT_SLOT_TIME);
1733
1734 wpabuf_put_u8(buf, WLAN_EID_SSID);
1735 wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
1736 wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1737
1738 wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
1739 wpabuf_put_u8(buf, 8);
1740 wpabuf_put_u8(buf, (60 / 5) | 0x80);
1741 wpabuf_put_u8(buf, 90 / 5);
1742 wpabuf_put_u8(buf, (120 / 5) | 0x80);
1743 wpabuf_put_u8(buf, 180 / 5);
1744 wpabuf_put_u8(buf, (240 / 5) | 0x80);
1745 wpabuf_put_u8(buf, 360 / 5);
1746 wpabuf_put_u8(buf, 480 / 5);
1747 wpabuf_put_u8(buf, 540 / 5);
1748
1749 wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
1750 wpabuf_put_u8(buf, 1);
1751 wpabuf_put_u8(buf, p2p->cfg->channel);
1752
1753 wpabuf_put_buf(buf, ies);
1754 wpabuf_free(ies);
1755
1756 p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
1757
1758 wpabuf_free(buf);
1759 }
1760
1761
p2p_probe_req_rx(struct p2p_data * p2p,const u8 * addr,const u8 * ie,size_t ie_len)1762 int p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *ie,
1763 size_t ie_len)
1764 {
1765 p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
1766
1767 p2p_reply_probe(p2p, addr, ie, ie_len);
1768
1769 if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
1770 p2p->go_neg_peer &&
1771 os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
1772 == 0) {
1773 /* Received a Probe Request from GO Negotiation peer */
1774 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1775 "P2P: Found GO Negotiation peer - try to start GO "
1776 "negotiation from timeout");
1777 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
1778 return 1;
1779 }
1780
1781 if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
1782 p2p->invite_peer &&
1783 os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
1784 == 0) {
1785 /* Received a Probe Request from Invite peer */
1786 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1787 "P2P: Found Invite peer - try to start Invite from "
1788 "timeout");
1789 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
1790 return 1;
1791 }
1792
1793 return 0;
1794 }
1795
1796
p2p_assoc_req_ie_wlan_ap(struct p2p_data * p2p,const u8 * bssid,u8 * buf,size_t len,struct wpabuf * p2p_ie)1797 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
1798 u8 *buf, size_t len, struct wpabuf *p2p_ie)
1799 {
1800 struct wpabuf *tmp;
1801 u8 *lpos;
1802 size_t tmplen;
1803 int res;
1804 u8 group_capab;
1805
1806 if (p2p_ie == NULL)
1807 return 0; /* WLAN AP is not a P2P manager */
1808
1809 /*
1810 * (Re)Association Request - P2P IE
1811 * P2P Capability attribute (shall be present)
1812 * P2P Interface attribute (present if concurrent device and
1813 * P2P Management is enabled)
1814 */
1815 tmp = wpabuf_alloc(200);
1816 if (tmp == NULL)
1817 return -1;
1818
1819 lpos = p2p_buf_add_ie_hdr(tmp);
1820 group_capab = 0;
1821 if (p2p->num_groups > 0) {
1822 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
1823 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
1824 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
1825 p2p->cross_connect)
1826 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
1827 }
1828 p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
1829 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
1830 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
1831 p2p_buf_add_p2p_interface(tmp, p2p);
1832 p2p_buf_update_ie_hdr(tmp, lpos);
1833
1834 tmplen = wpabuf_len(tmp);
1835 if (tmplen > len)
1836 res = -1;
1837 else {
1838 os_memcpy(buf, wpabuf_head(tmp), tmplen);
1839 res = tmplen;
1840 }
1841 wpabuf_free(tmp);
1842
1843 return res;
1844 }
1845
1846
p2p_assoc_req_ie(struct p2p_data * p2p,const u8 * bssid,u8 * buf,size_t len,int p2p_group,struct wpabuf * p2p_ie)1847 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
1848 size_t len, int p2p_group, struct wpabuf *p2p_ie)
1849 {
1850 struct wpabuf *tmp;
1851 u8 *lpos;
1852 struct p2p_device *peer;
1853 size_t tmplen;
1854 int res;
1855
1856 if (!p2p_group)
1857 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
1858
1859 /*
1860 * (Re)Association Request - P2P IE
1861 * P2P Capability attribute (shall be present)
1862 * Extended Listen Timing (may be present)
1863 * P2P Device Info attribute (shall be present)
1864 */
1865 tmp = wpabuf_alloc(200);
1866 if (tmp == NULL)
1867 return -1;
1868
1869 peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
1870
1871 lpos = p2p_buf_add_ie_hdr(tmp);
1872 p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
1873 if (p2p->ext_listen_interval)
1874 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
1875 p2p->ext_listen_interval);
1876 p2p_buf_add_device_info(tmp, p2p, peer);
1877 p2p_buf_update_ie_hdr(tmp, lpos);
1878
1879 tmplen = wpabuf_len(tmp);
1880 if (tmplen > len)
1881 res = -1;
1882 else {
1883 os_memcpy(buf, wpabuf_head(tmp), tmplen);
1884 res = tmplen;
1885 }
1886 wpabuf_free(tmp);
1887
1888 return res;
1889 }
1890
1891
p2p_scan_result_text(const u8 * ies,size_t ies_len,char * buf,char * end)1892 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
1893 {
1894 struct wpabuf *p2p_ie;
1895 int ret;
1896
1897 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
1898 if (p2p_ie == NULL)
1899 return 0;
1900
1901 ret = p2p_attr_text(p2p_ie, buf, end);
1902 wpabuf_free(p2p_ie);
1903 return ret;
1904 }
1905
1906
p2p_clear_go_neg(struct p2p_data * p2p)1907 static void p2p_clear_go_neg(struct p2p_data *p2p)
1908 {
1909 p2p->go_neg_peer = NULL;
1910 p2p_clear_timeout(p2p);
1911 p2p_set_state(p2p, P2P_IDLE);
1912 }
1913
1914
p2p_wps_success_cb(struct p2p_data * p2p,const u8 * mac_addr)1915 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
1916 {
1917 if (p2p->go_neg_peer == NULL) {
1918 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1919 "P2P: No pending Group Formation - "
1920 "ignore WPS registration success notification");
1921 return; /* No pending Group Formation */
1922 }
1923
1924 if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
1925 0) {
1926 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1927 "P2P: Ignore WPS registration success notification "
1928 "for " MACSTR " (GO Negotiation peer " MACSTR ")",
1929 MAC2STR(mac_addr),
1930 MAC2STR(p2p->go_neg_peer->intended_addr));
1931 return; /* Ignore unexpected peer address */
1932 }
1933
1934 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1935 "P2P: Group Formation completed successfully with " MACSTR,
1936 MAC2STR(mac_addr));
1937
1938 p2p_clear_go_neg(p2p);
1939 }
1940
1941
p2p_group_formation_failed(struct p2p_data * p2p)1942 void p2p_group_formation_failed(struct p2p_data *p2p)
1943 {
1944 if (p2p->go_neg_peer == NULL) {
1945 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1946 "P2P: No pending Group Formation - "
1947 "ignore group formation failure notification");
1948 return; /* No pending Group Formation */
1949 }
1950
1951 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1952 "P2P: Group Formation failed with " MACSTR,
1953 MAC2STR(p2p->go_neg_peer->intended_addr));
1954
1955 p2p_clear_go_neg(p2p);
1956 }
1957
1958
p2p_init(const struct p2p_config * cfg)1959 struct p2p_data * p2p_init(const struct p2p_config *cfg)
1960 {
1961 struct p2p_data *p2p;
1962
1963 if (cfg->max_peers < 1)
1964 return NULL;
1965
1966 p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
1967 if (p2p == NULL)
1968 return NULL;
1969 p2p->cfg = (struct p2p_config *) (p2p + 1);
1970 os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
1971 if (cfg->dev_name)
1972 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
1973 if (cfg->manufacturer)
1974 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
1975 if (cfg->model_name)
1976 p2p->cfg->model_name = os_strdup(cfg->model_name);
1977 if (cfg->model_number)
1978 p2p->cfg->model_number = os_strdup(cfg->model_number);
1979 if (cfg->serial_number)
1980 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
1981
1982 p2p->min_disc_int = 1;
1983 p2p->max_disc_int = 3;
1984
1985 os_get_random(&p2p->next_tie_breaker, 1);
1986 p2p->next_tie_breaker &= 0x01;
1987 if (cfg->sd_request)
1988 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
1989 p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
1990 if (cfg->concurrent_operations)
1991 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
1992 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
1993
1994 dl_list_init(&p2p->devices);
1995
1996 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
1997 p2p_expiration_timeout, p2p, NULL);
1998
1999 return p2p;
2000 }
2001
2002
p2p_deinit(struct p2p_data * p2p)2003 void p2p_deinit(struct p2p_data *p2p)
2004 {
2005 eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2006 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2007 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2008 p2p_flush(p2p);
2009 p2p_free_req_dev_types(p2p);
2010 os_free(p2p->cfg->dev_name);
2011 os_free(p2p->cfg->manufacturer);
2012 os_free(p2p->cfg->model_name);
2013 os_free(p2p->cfg->model_number);
2014 os_free(p2p->cfg->serial_number);
2015 os_free(p2p->groups);
2016 wpabuf_free(p2p->sd_resp);
2017 os_free(p2p->after_scan_tx);
2018 p2p_remove_wps_vendor_extensions(p2p);
2019 os_free(p2p);
2020 }
2021
2022
p2p_flush(struct p2p_data * p2p)2023 void p2p_flush(struct p2p_data *p2p)
2024 {
2025 struct p2p_device *dev, *prev;
2026 p2p_clear_timeout(p2p);
2027 p2p_set_state(p2p, P2P_IDLE);
2028 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
2029 p2p->go_neg_peer = NULL;
2030 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
2031 dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2032 list) {
2033 dl_list_del(&dev->list);
2034 p2p_device_free(p2p, dev);
2035 }
2036 p2p_free_sd_queries(p2p);
2037 os_free(p2p->after_scan_tx);
2038 p2p->after_scan_tx = NULL;
2039 }
2040
2041
p2p_unauthorize(struct p2p_data * p2p,const u8 * addr)2042 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2043 {
2044 struct p2p_device *dev;
2045
2046 dev = p2p_get_device(p2p, addr);
2047 if (dev == NULL)
2048 return -1;
2049
2050 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Unauthorizing " MACSTR,
2051 MAC2STR(addr));
2052
2053 if (p2p->go_neg_peer == dev)
2054 p2p->go_neg_peer = NULL;
2055
2056 dev->wps_method = WPS_NOT_READY;
2057 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2058 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2059
2060 /* Check if after_scan_tx is for this peer. If so free it */
2061 if (p2p->after_scan_tx &&
2062 os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2063 os_free(p2p->after_scan_tx);
2064 p2p->after_scan_tx = NULL;
2065 }
2066
2067 return 0;
2068 }
2069
2070
p2p_set_dev_name(struct p2p_data * p2p,const char * dev_name)2071 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2072 {
2073 os_free(p2p->cfg->dev_name);
2074 if (dev_name) {
2075 p2p->cfg->dev_name = os_strdup(dev_name);
2076 if (p2p->cfg->dev_name == NULL)
2077 return -1;
2078 } else
2079 p2p->cfg->dev_name = NULL;
2080 return 0;
2081 }
2082
2083
p2p_set_manufacturer(struct p2p_data * p2p,const char * manufacturer)2084 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
2085 {
2086 os_free(p2p->cfg->manufacturer);
2087 p2p->cfg->manufacturer = NULL;
2088 if (manufacturer) {
2089 p2p->cfg->manufacturer = os_strdup(manufacturer);
2090 if (p2p->cfg->manufacturer == NULL)
2091 return -1;
2092 }
2093
2094 return 0;
2095 }
2096
2097
p2p_set_model_name(struct p2p_data * p2p,const char * model_name)2098 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
2099 {
2100 os_free(p2p->cfg->model_name);
2101 p2p->cfg->model_name = NULL;
2102 if (model_name) {
2103 p2p->cfg->model_name = os_strdup(model_name);
2104 if (p2p->cfg->model_name == NULL)
2105 return -1;
2106 }
2107
2108 return 0;
2109 }
2110
2111
p2p_set_model_number(struct p2p_data * p2p,const char * model_number)2112 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
2113 {
2114 os_free(p2p->cfg->model_number);
2115 p2p->cfg->model_number = NULL;
2116 if (model_number) {
2117 p2p->cfg->model_number = os_strdup(model_number);
2118 if (p2p->cfg->model_number == NULL)
2119 return -1;
2120 }
2121
2122 return 0;
2123 }
2124
2125
p2p_set_serial_number(struct p2p_data * p2p,const char * serial_number)2126 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
2127 {
2128 os_free(p2p->cfg->serial_number);
2129 p2p->cfg->serial_number = NULL;
2130 if (serial_number) {
2131 p2p->cfg->serial_number = os_strdup(serial_number);
2132 if (p2p->cfg->serial_number == NULL)
2133 return -1;
2134 }
2135
2136 return 0;
2137 }
2138
2139
p2p_set_config_methods(struct p2p_data * p2p,u16 config_methods)2140 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
2141 {
2142 p2p->cfg->config_methods = config_methods;
2143 }
2144
2145
p2p_set_uuid(struct p2p_data * p2p,const u8 * uuid)2146 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
2147 {
2148 os_memcpy(p2p->cfg->uuid, uuid, 16);
2149 }
2150
2151
p2p_set_pri_dev_type(struct p2p_data * p2p,const u8 * pri_dev_type)2152 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
2153 {
2154 os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
2155 return 0;
2156 }
2157
2158
p2p_set_sec_dev_types(struct p2p_data * p2p,const u8 dev_types[][8],size_t num_dev_types)2159 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
2160 size_t num_dev_types)
2161 {
2162 if (num_dev_types > P2P_SEC_DEVICE_TYPES)
2163 num_dev_types = P2P_SEC_DEVICE_TYPES;
2164 p2p->cfg->num_sec_dev_types = num_dev_types;
2165 os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
2166 return 0;
2167 }
2168
2169
p2p_remove_wps_vendor_extensions(struct p2p_data * p2p)2170 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
2171 {
2172 int i;
2173
2174 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2175 wpabuf_free(p2p->wps_vendor_ext[i]);
2176 p2p->wps_vendor_ext[i] = NULL;
2177 }
2178 }
2179
2180
p2p_add_wps_vendor_extension(struct p2p_data * p2p,const struct wpabuf * vendor_ext)2181 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2182 const struct wpabuf *vendor_ext)
2183 {
2184 int i;
2185
2186 if (vendor_ext == NULL)
2187 return -1;
2188
2189 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2190 if (p2p->wps_vendor_ext[i] == NULL)
2191 break;
2192 }
2193 if (i >= P2P_MAX_WPS_VENDOR_EXT)
2194 return -1;
2195
2196 p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
2197 if (p2p->wps_vendor_ext[i] == NULL)
2198 return -1;
2199
2200 return 0;
2201 }
2202
2203
p2p_set_country(struct p2p_data * p2p,const char * country)2204 int p2p_set_country(struct p2p_data *p2p, const char *country)
2205 {
2206 os_memcpy(p2p->cfg->country, country, 3);
2207 return 0;
2208 }
2209
2210
p2p_continue_find(struct p2p_data * p2p)2211 void p2p_continue_find(struct p2p_data *p2p)
2212 {
2213 struct p2p_device *dev;
2214 p2p_set_state(p2p, P2P_SEARCH);
2215 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2216 if (dev->flags & P2P_DEV_SD_SCHEDULE) {
2217 if (p2p_start_sd(p2p, dev) == 0)
2218 return;
2219 else
2220 break;
2221 } else if (dev->req_config_methods &&
2222 !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
2223 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send "
2224 "pending Provisioning Discovery Request to "
2225 MACSTR " (config methods 0x%x)",
2226 MAC2STR(dev->info.p2p_device_addr),
2227 dev->req_config_methods);
2228 if (p2p_send_prov_disc_req(p2p, dev, 0) == 0)
2229 return;
2230 }
2231 }
2232
2233 p2p_listen_in_find(p2p);
2234 }
2235
2236
p2p_sd_cb(struct p2p_data * p2p,int success)2237 static void p2p_sd_cb(struct p2p_data *p2p, int success)
2238 {
2239 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2240 "P2P: Service Discovery Query TX callback: success=%d",
2241 success);
2242 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2243
2244 if (!success) {
2245 if (p2p->sd_peer) {
2246 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
2247 p2p->sd_peer = NULL;
2248 }
2249 p2p_continue_find(p2p);
2250 return;
2251 }
2252
2253 if (p2p->sd_peer == NULL) {
2254 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2255 "P2P: No SD peer entry known");
2256 p2p_continue_find(p2p);
2257 return;
2258 }
2259
2260 /* Wait for response from the peer */
2261 p2p_set_state(p2p, P2P_SD_DURING_FIND);
2262 p2p_set_timeout(p2p, 0, 200000);
2263 }
2264
2265
2266 /**
2267 * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
2268 * @p2p: P2P module context from p2p_init()
2269 */
p2p_retry_pd(struct p2p_data * p2p)2270 void p2p_retry_pd(struct p2p_data *p2p)
2271 {
2272 struct p2p_device *dev;
2273
2274 if (p2p->state != P2P_IDLE)
2275 return;
2276
2277 /*
2278 * Retry the prov disc req attempt only for the peer that the user had
2279 * requested for and provided a join has not been initiated on it
2280 * in the meantime.
2281 */
2282
2283 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2284 if (os_memcmp(p2p->pending_pd_devaddr,
2285 dev->info.p2p_device_addr, ETH_ALEN) != 0)
2286 continue;
2287 if (!dev->req_config_methods)
2288 continue;
2289 if (dev->flags & P2P_DEV_PD_FOR_JOIN)
2290 continue;
2291
2292 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send "
2293 "pending Provisioning Discovery Request to "
2294 MACSTR " (config methods 0x%x)",
2295 MAC2STR(dev->info.p2p_device_addr),
2296 dev->req_config_methods);
2297 p2p_send_prov_disc_req(p2p, dev, 0);
2298 return;
2299 }
2300 }
2301
2302
p2p_prov_disc_cb(struct p2p_data * p2p,int success)2303 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
2304 {
2305 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2306 "P2P: Provision Discovery Request TX callback: success=%d",
2307 success);
2308
2309 /*
2310 * Postpone resetting the pending action state till after we actually
2311 * time out. This allows us to take some action like notifying any
2312 * interested parties about no response to the request.
2313 *
2314 * When the timer (below) goes off we check in IDLE, SEARCH, or
2315 * LISTEN_ONLY state, which are the only allowed states to issue a PD
2316 * requests in, if this was still pending and then raise notification.
2317 */
2318
2319 if (!success) {
2320 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2321
2322 if (p2p->state != P2P_IDLE)
2323 p2p_continue_find(p2p);
2324 else if (p2p->user_initiated_pd) {
2325 p2p->pending_action_state = P2P_PENDING_PD;
2326 p2p_set_timeout(p2p, 0, 300000);
2327 }
2328 return;
2329 }
2330
2331 /*
2332 * This postponing, of resetting pending_action_state, needs to be
2333 * done only for user initiated PD requests and not internal ones.
2334 */
2335 if (p2p->user_initiated_pd)
2336 p2p->pending_action_state = P2P_PENDING_PD;
2337 else
2338 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2339
2340 /* Wait for response from the peer */
2341 if (p2p->state == P2P_SEARCH)
2342 p2p_set_state(p2p, P2P_PD_DURING_FIND);
2343 p2p_set_timeout(p2p, 0, 200000);
2344 }
2345
2346
p2p_scan_res_handler(struct p2p_data * p2p,const u8 * bssid,int freq,int level,const u8 * ies,size_t ies_len)2347 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
2348 int level, const u8 *ies, size_t ies_len)
2349 {
2350 p2p_add_device(p2p, bssid, freq, level, ies, ies_len);
2351
2352 if (p2p->go_neg_peer && p2p->state == P2P_SEARCH &&
2353 os_memcmp(p2p->go_neg_peer->info.p2p_device_addr, bssid, ETH_ALEN)
2354 == 0) {
2355 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2356 "P2P: Found GO Negotiation peer - try to start GO "
2357 "negotiation");
2358 p2p_connect_send(p2p, p2p->go_neg_peer);
2359 return 1;
2360 }
2361
2362 return 0;
2363 }
2364
2365
p2p_scan_res_handled(struct p2p_data * p2p)2366 void p2p_scan_res_handled(struct p2p_data *p2p)
2367 {
2368 if (!p2p->p2p_scan_running) {
2369 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan was not "
2370 "running, but scan results received");
2371 }
2372 p2p->p2p_scan_running = 0;
2373 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2374
2375 if (p2p_run_after_scan(p2p))
2376 return;
2377 if (p2p->state == P2P_SEARCH)
2378 p2p_continue_find(p2p);
2379 }
2380
2381
p2p_scan_ie(struct p2p_data * p2p,struct wpabuf * ies)2382 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies)
2383 {
2384 u8 *len = p2p_buf_add_ie_hdr(ies);
2385 p2p_buf_add_capability(ies, p2p->dev_capab, 0);
2386 if (p2p->cfg->reg_class && p2p->cfg->channel)
2387 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
2388 p2p->cfg->reg_class,
2389 p2p->cfg->channel);
2390 if (p2p->ext_listen_interval)
2391 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
2392 p2p->ext_listen_interval);
2393 /* TODO: p2p_buf_add_operating_channel() if GO */
2394 p2p_buf_update_ie_hdr(ies, len);
2395 }
2396
2397
p2p_ie_text(struct wpabuf * p2p_ie,char * buf,char * end)2398 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
2399 {
2400 return p2p_attr_text(p2p_ie, buf, end);
2401 }
2402
2403
p2p_go_neg_req_cb(struct p2p_data * p2p,int success)2404 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
2405 {
2406 struct p2p_device *dev = p2p->go_neg_peer;
2407
2408 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2409 "P2P: GO Negotiation Request TX callback: success=%d",
2410 success);
2411
2412 if (dev == NULL) {
2413 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2414 "P2P: No pending GO Negotiation");
2415 return;
2416 }
2417
2418 if (success) {
2419 dev->go_neg_req_sent++;
2420 if (dev->flags & P2P_DEV_USER_REJECTED) {
2421 p2p_set_state(p2p, P2P_IDLE);
2422 return;
2423 }
2424 }
2425
2426 if (!success &&
2427 (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
2428 !is_zero_ether_addr(dev->member_in_go_dev)) {
2429 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2430 "P2P: Peer " MACSTR " did not acknowledge request - "
2431 "try to use device discoverability through its GO",
2432 MAC2STR(dev->info.p2p_device_addr));
2433 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2434 p2p_send_dev_disc_req(p2p, dev);
2435 return;
2436 }
2437
2438 /*
2439 * Use P2P find, if needed, to find the other device from its listen
2440 * channel.
2441 */
2442 p2p_set_state(p2p, P2P_CONNECT);
2443 p2p_set_timeout(p2p, 0, 100000);
2444 }
2445
2446
p2p_go_neg_resp_cb(struct p2p_data * p2p,int success)2447 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
2448 {
2449 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2450 "P2P: GO Negotiation Response TX callback: success=%d",
2451 success);
2452 if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
2453 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2454 "P2P: Ignore TX callback event - GO Negotiation is "
2455 "not running anymore");
2456 return;
2457 }
2458 p2p_set_state(p2p, P2P_CONNECT);
2459 p2p_set_timeout(p2p, 0, 100000);
2460 }
2461
2462
p2p_go_neg_resp_failure_cb(struct p2p_data * p2p,int success)2463 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success)
2464 {
2465 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2466 "P2P: GO Negotiation Response (failure) TX callback: "
2467 "success=%d", success);
2468 if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
2469 p2p_go_neg_failed(p2p, p2p->go_neg_peer,
2470 p2p->go_neg_peer->status);
2471 }
2472 }
2473
2474
p2p_go_neg_conf_cb(struct p2p_data * p2p,enum p2p_send_action_result result)2475 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
2476 enum p2p_send_action_result result)
2477 {
2478 struct p2p_device *dev;
2479
2480 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2481 "P2P: GO Negotiation Confirm TX callback: result=%d",
2482 result);
2483 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2484 if (result == P2P_SEND_ACTION_FAILED) {
2485 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2486 return;
2487 }
2488 if (result == P2P_SEND_ACTION_NO_ACK) {
2489 /*
2490 * It looks like the TX status for GO Negotiation Confirm is
2491 * often showing failure even when the peer has actually
2492 * received the frame. Since the peer may change channels
2493 * immediately after having received the frame, we may not see
2494 * an Ack for retries, so just dropping a single frame may
2495 * trigger this. To allow the group formation to succeed if the
2496 * peer did indeed receive the frame, continue regardless of
2497 * the TX status.
2498 */
2499 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2500 "P2P: Assume GO Negotiation Confirm TX was actually "
2501 "received by the peer even though Ack was not "
2502 "reported");
2503 }
2504
2505 dev = p2p->go_neg_peer;
2506 if (dev == NULL)
2507 return;
2508
2509 p2p_go_complete(p2p, dev);
2510 }
2511
2512
p2p_send_action_cb(struct p2p_data * p2p,unsigned int freq,const u8 * dst,const u8 * src,const u8 * bssid,enum p2p_send_action_result result)2513 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
2514 const u8 *src, const u8 *bssid,
2515 enum p2p_send_action_result result)
2516 {
2517 enum p2p_pending_action_state state;
2518 int success;
2519
2520 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2521 "P2P: Action frame TX callback (state=%d freq=%u dst=" MACSTR
2522 " src=" MACSTR " bssid=" MACSTR " result=%d",
2523 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
2524 MAC2STR(bssid), result);
2525 success = result == P2P_SEND_ACTION_SUCCESS;
2526 state = p2p->pending_action_state;
2527 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2528 switch (state) {
2529 case P2P_NO_PENDING_ACTION:
2530 break;
2531 case P2P_PENDING_GO_NEG_REQUEST:
2532 p2p_go_neg_req_cb(p2p, success);
2533 break;
2534 case P2P_PENDING_GO_NEG_RESPONSE:
2535 p2p_go_neg_resp_cb(p2p, success);
2536 break;
2537 case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
2538 p2p_go_neg_resp_failure_cb(p2p, success);
2539 break;
2540 case P2P_PENDING_GO_NEG_CONFIRM:
2541 p2p_go_neg_conf_cb(p2p, result);
2542 break;
2543 case P2P_PENDING_SD:
2544 p2p_sd_cb(p2p, success);
2545 break;
2546 case P2P_PENDING_PD:
2547 p2p_prov_disc_cb(p2p, success);
2548 break;
2549 case P2P_PENDING_INVITATION_REQUEST:
2550 p2p_invitation_req_cb(p2p, success);
2551 break;
2552 case P2P_PENDING_INVITATION_RESPONSE:
2553 p2p_invitation_resp_cb(p2p, success);
2554 break;
2555 case P2P_PENDING_DEV_DISC_REQUEST:
2556 p2p_dev_disc_req_cb(p2p, success);
2557 break;
2558 case P2P_PENDING_DEV_DISC_RESPONSE:
2559 p2p_dev_disc_resp_cb(p2p, success);
2560 break;
2561 case P2P_PENDING_GO_DISC_REQ:
2562 p2p_go_disc_req_cb(p2p, success);
2563 break;
2564 }
2565 }
2566
2567
p2p_listen_cb(struct p2p_data * p2p,unsigned int freq,unsigned int duration)2568 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
2569 unsigned int duration)
2570 {
2571 if (freq == p2p->pending_client_disc_freq) {
2572 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2573 "P2P: Client discoverability remain-awake completed");
2574 p2p->pending_client_disc_freq = 0;
2575 return;
2576 }
2577
2578 if (freq != p2p->pending_listen_freq) {
2579 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2580 "P2P: Unexpected listen callback for freq=%u "
2581 "duration=%u (pending_listen_freq=%u)",
2582 freq, duration, p2p->pending_listen_freq);
2583 return;
2584 }
2585
2586 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2587 "P2P: Starting Listen timeout(%u,%u) on freq=%u based on "
2588 "callback",
2589 p2p->pending_listen_sec, p2p->pending_listen_usec,
2590 p2p->pending_listen_freq);
2591 p2p->in_listen = 1;
2592 p2p->drv_in_listen = freq;
2593 if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
2594 /*
2595 * Add 20 msec extra wait to avoid race condition with driver
2596 * remain-on-channel end event, i.e., give driver more time to
2597 * complete the operation before our timeout expires.
2598 */
2599 p2p_set_timeout(p2p, p2p->pending_listen_sec,
2600 p2p->pending_listen_usec + 20000);
2601 }
2602
2603 p2p->pending_listen_freq = 0;
2604 }
2605
2606
p2p_listen_end(struct p2p_data * p2p,unsigned int freq)2607 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
2608 {
2609 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver ended Listen "
2610 "state (freq=%u)", freq);
2611 p2p->drv_in_listen = 0;
2612 if (p2p->in_listen)
2613 return 0; /* Internal timeout will trigger the next step */
2614
2615 if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
2616 if (p2p->go_neg_peer->connect_reqs >= 120) {
2617 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2618 "P2P: Timeout on sending GO Negotiation "
2619 "Request without getting response");
2620 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2621 return 0;
2622 }
2623
2624 p2p_set_state(p2p, P2P_CONNECT);
2625 p2p_connect_send(p2p, p2p->go_neg_peer);
2626 return 1;
2627 } else if (p2p->state == P2P_SEARCH) {
2628 p2p_search(p2p);
2629 return 1;
2630 }
2631
2632 return 0;
2633 }
2634
2635
p2p_timeout_connect(struct p2p_data * p2p)2636 static void p2p_timeout_connect(struct p2p_data *p2p)
2637 {
2638 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2639 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
2640 p2p_listen_in_find(p2p);
2641 }
2642
2643
p2p_timeout_connect_listen(struct p2p_data * p2p)2644 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
2645 {
2646 if (p2p->go_neg_peer) {
2647 if (p2p->drv_in_listen) {
2648 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is "
2649 "still in Listen state; wait for it to "
2650 "complete");
2651 return;
2652 }
2653
2654 if (p2p->go_neg_peer->connect_reqs >= 120) {
2655 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2656 "P2P: Timeout on sending GO Negotiation "
2657 "Request without getting response");
2658 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2659 return;
2660 }
2661
2662 p2p_set_state(p2p, P2P_CONNECT);
2663 p2p_connect_send(p2p, p2p->go_neg_peer);
2664 } else
2665 p2p_set_state(p2p, P2P_IDLE);
2666 }
2667
2668
p2p_timeout_wait_peer_connect(struct p2p_data * p2p)2669 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
2670 {
2671 /*
2672 * TODO: could remain constantly in Listen state for some time if there
2673 * are no other concurrent uses for the radio. For now, go to listen
2674 * state once per second to give other uses a chance to use the radio.
2675 */
2676 p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
2677 #ifdef ANDROID_BRCM_P2P_PATCH
2678 /*
2679 * We need to be back in Listen state soon enough so that we don't miss
2680 * the GO Nego req from the peer.
2681 */
2682 p2p_set_timeout(p2p, 0, 0);
2683 #else
2684 p2p_set_timeout(p2p, 1, 0);
2685 #endif
2686 }
2687
2688
p2p_timeout_wait_peer_idle(struct p2p_data * p2p)2689 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
2690 {
2691 struct p2p_device *dev = p2p->go_neg_peer;
2692
2693 if (dev == NULL) {
2694 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2695 "P2P: Unknown GO Neg peer - stop GO Neg wait");
2696 return;
2697 }
2698
2699 dev->wait_count++;
2700 if (dev->wait_count >= 120) {
2701 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2702 "P2P: Timeout on waiting peer to become ready for GO "
2703 "Negotiation");
2704 p2p_go_neg_failed(p2p, dev, -1);
2705 return;
2706 }
2707
2708 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2709 "P2P: Go to Listen state while waiting for the peer to become "
2710 "ready for GO Negotiation");
2711 p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
2712 p2p_listen_in_find(p2p);
2713 }
2714
2715
p2p_timeout_sd_during_find(struct p2p_data * p2p)2716 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
2717 {
2718 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2719 "P2P: Service Discovery Query timeout");
2720 if (p2p->sd_peer) {
2721 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2722 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
2723 p2p->sd_peer = NULL;
2724 }
2725 p2p_continue_find(p2p);
2726 }
2727
2728
p2p_timeout_prov_disc_during_find(struct p2p_data * p2p)2729 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
2730 {
2731 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2732 "P2P: Provision Discovery Request timeout");
2733 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2734 p2p_continue_find(p2p);
2735 }
2736
2737
p2p_timeout_prov_disc_req(struct p2p_data * p2p)2738 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
2739 {
2740 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2741
2742 /*
2743 * For user initiated PD requests that we have not gotten any responses
2744 * for while in IDLE state, we retry them a couple of times before
2745 * giving up.
2746 */
2747 if (!p2p->user_initiated_pd)
2748 return;
2749
2750 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2751 "P2P: User initiated Provision Discovery Request timeout");
2752
2753 if (p2p->pd_retries) {
2754 p2p->pd_retries--;
2755 p2p_retry_pd(p2p);
2756 } else {
2757 if (p2p->cfg->prov_disc_fail)
2758 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
2759 p2p->pending_pd_devaddr,
2760 P2P_PROV_DISC_TIMEOUT);
2761 p2p_reset_pending_pd(p2p);
2762 }
2763 }
2764
2765
p2p_timeout_invite(struct p2p_data * p2p)2766 static void p2p_timeout_invite(struct p2p_data *p2p)
2767 {
2768 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2769 p2p_set_state(p2p, P2P_INVITE_LISTEN);
2770 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
2771 /*
2772 * Better remain on operating channel instead of listen channel
2773 * when running a group.
2774 */
2775 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Inviting in "
2776 "active GO role - wait on operating channel");
2777 p2p_set_timeout(p2p, 0, 100000);
2778 return;
2779 }
2780 p2p_listen_in_find(p2p);
2781 }
2782
2783
p2p_timeout_invite_listen(struct p2p_data * p2p)2784 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
2785 {
2786 if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
2787 p2p_set_state(p2p, P2P_INVITE);
2788 p2p_invite_send(p2p, p2p->invite_peer,
2789 p2p->invite_go_dev_addr);
2790 } else {
2791 if (p2p->invite_peer) {
2792 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2793 "P2P: Invitation Request retry limit reached");
2794 if (p2p->cfg->invitation_result)
2795 p2p->cfg->invitation_result(
2796 p2p->cfg->cb_ctx, -1, NULL);
2797 }
2798 p2p_set_state(p2p, P2P_IDLE);
2799 }
2800 }
2801
2802
p2p_state_timeout(void * eloop_ctx,void * timeout_ctx)2803 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
2804 {
2805 struct p2p_data *p2p = eloop_ctx;
2806
2807 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Timeout (state=%s)",
2808 p2p_state_txt(p2p->state));
2809
2810 p2p->in_listen = 0;
2811
2812 switch (p2p->state) {
2813 case P2P_IDLE:
2814 /* Check if we timed out waiting for PD req */
2815 if (p2p->pending_action_state == P2P_PENDING_PD)
2816 p2p_timeout_prov_disc_req(p2p);
2817 break;
2818 case P2P_SEARCH:
2819 /* Check if we timed out waiting for PD req */
2820 if (p2p->pending_action_state == P2P_PENDING_PD)
2821 p2p_timeout_prov_disc_req(p2p);
2822 p2p_search(p2p);
2823 break;
2824 case P2P_CONNECT:
2825 p2p_timeout_connect(p2p);
2826 break;
2827 case P2P_CONNECT_LISTEN:
2828 p2p_timeout_connect_listen(p2p);
2829 break;
2830 case P2P_GO_NEG:
2831 break;
2832 case P2P_LISTEN_ONLY:
2833 /* Check if we timed out waiting for PD req */
2834 if (p2p->pending_action_state == P2P_PENDING_PD)
2835 p2p_timeout_prov_disc_req(p2p);
2836
2837 if (p2p->ext_listen_only) {
2838 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2839 "P2P: Extended Listen Timing - Listen State "
2840 "completed");
2841 p2p->ext_listen_only = 0;
2842 p2p_set_state(p2p, P2P_IDLE);
2843 }
2844 break;
2845 case P2P_WAIT_PEER_CONNECT:
2846 p2p_timeout_wait_peer_connect(p2p);
2847 break;
2848 case P2P_WAIT_PEER_IDLE:
2849 p2p_timeout_wait_peer_idle(p2p);
2850 break;
2851 case P2P_SD_DURING_FIND:
2852 p2p_timeout_sd_during_find(p2p);
2853 break;
2854 case P2P_PROVISIONING:
2855 break;
2856 case P2P_PD_DURING_FIND:
2857 p2p_timeout_prov_disc_during_find(p2p);
2858 break;
2859 case P2P_INVITE:
2860 p2p_timeout_invite(p2p);
2861 break;
2862 case P2P_INVITE_LISTEN:
2863 p2p_timeout_invite_listen(p2p);
2864 break;
2865 }
2866 }
2867
2868
p2p_reject(struct p2p_data * p2p,const u8 * peer_addr)2869 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
2870 {
2871 struct p2p_device *dev;
2872
2873 dev = p2p_get_device(p2p, peer_addr);
2874 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Local request to reject "
2875 "connection attempts by peer " MACSTR, MAC2STR(peer_addr));
2876 if (dev == NULL) {
2877 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer " MACSTR
2878 " unknown", MAC2STR(peer_addr));
2879 return -1;
2880 }
2881 dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
2882 dev->flags |= P2P_DEV_USER_REJECTED;
2883 return 0;
2884 }
2885
2886
p2p_wps_method_text(enum p2p_wps_method method)2887 static const char * p2p_wps_method_text(enum p2p_wps_method method)
2888 {
2889 switch (method) {
2890 case WPS_NOT_READY:
2891 return "not-ready";
2892 case WPS_PIN_LABEL:
2893 return "Label";
2894 case WPS_PIN_DISPLAY:
2895 return "Display";
2896 case WPS_PIN_KEYPAD:
2897 return "Keypad";
2898 case WPS_PBC:
2899 return "PBC";
2900 }
2901
2902 return "??";
2903 }
2904
2905
p2p_go_state_text(enum p2p_go_state go_state)2906 static const char * p2p_go_state_text(enum p2p_go_state go_state)
2907 {
2908 switch (go_state) {
2909 case UNKNOWN_GO:
2910 return "unknown";
2911 case LOCAL_GO:
2912 return "local";
2913 case REMOTE_GO:
2914 return "remote";
2915 }
2916
2917 return "??";
2918 }
2919
2920
p2p_get_peer_info(struct p2p_data * p2p,const u8 * addr,int next,char * buf,size_t buflen)2921 int p2p_get_peer_info(struct p2p_data *p2p, const u8 *addr, int next,
2922 char *buf, size_t buflen)
2923 {
2924 struct p2p_device *dev;
2925 int res;
2926 char *pos, *end;
2927 struct os_time now;
2928 char devtype[WPS_DEV_TYPE_BUFSIZE];
2929
2930 if (addr)
2931 dev = p2p_get_device(p2p, addr);
2932 else
2933 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
2934
2935 if (dev && next) {
2936 dev = dl_list_first(&dev->list, struct p2p_device, list);
2937 if (&dev->list == &p2p->devices)
2938 dev = NULL;
2939 }
2940
2941 if (dev == NULL)
2942 return -1;
2943
2944 pos = buf;
2945 end = buf + buflen;
2946
2947 res = os_snprintf(pos, end - pos, MACSTR "\n",
2948 MAC2STR(dev->info.p2p_device_addr));
2949 if (res < 0 || res >= end - pos)
2950 return pos - buf;
2951 pos += res;
2952
2953 os_get_time(&now);
2954 res = os_snprintf(pos, end - pos,
2955 "age=%d\n"
2956 "listen_freq=%d\n"
2957 "level=%d\n"
2958 "wps_method=%s\n"
2959 "interface_addr=" MACSTR "\n"
2960 "member_in_go_dev=" MACSTR "\n"
2961 "member_in_go_iface=" MACSTR "\n"
2962 "pri_dev_type=%s\n"
2963 "device_name=%s\n"
2964 "manufacturer=%s\n"
2965 "model_name=%s\n"
2966 "model_number=%s\n"
2967 "serial_number=%s\n"
2968 "config_methods=0x%x\n"
2969 "dev_capab=0x%x\n"
2970 "group_capab=0x%x\n"
2971 "go_neg_req_sent=%d\n"
2972 "go_state=%s\n"
2973 "dialog_token=%u\n"
2974 "intended_addr=" MACSTR "\n"
2975 "country=%c%c\n"
2976 "oper_freq=%d\n"
2977 "req_config_methods=0x%x\n"
2978 "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
2979 "status=%d\n"
2980 "wait_count=%u\n"
2981 "invitation_reqs=%u\n",
2982 (int) (now.sec - dev->last_seen.sec),
2983 dev->listen_freq,
2984 dev->info.level,
2985 p2p_wps_method_text(dev->wps_method),
2986 MAC2STR(dev->interface_addr),
2987 MAC2STR(dev->member_in_go_dev),
2988 MAC2STR(dev->member_in_go_iface),
2989 wps_dev_type_bin2str(dev->info.pri_dev_type,
2990 devtype, sizeof(devtype)),
2991 dev->info.device_name,
2992 dev->info.manufacturer,
2993 dev->info.model_name,
2994 dev->info.model_number,
2995 dev->info.serial_number,
2996 dev->info.config_methods,
2997 dev->info.dev_capab,
2998 dev->info.group_capab,
2999 dev->go_neg_req_sent,
3000 p2p_go_state_text(dev->go_state),
3001 dev->dialog_token,
3002 MAC2STR(dev->intended_addr),
3003 dev->country[0] ? dev->country[0] : '_',
3004 dev->country[1] ? dev->country[1] : '_',
3005 dev->oper_freq,
3006 dev->req_config_methods,
3007 dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
3008 "[PROBE_REQ_ONLY]" : "",
3009 dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
3010 dev->flags & P2P_DEV_NOT_YET_READY ?
3011 "[NOT_YET_READY]" : "",
3012 dev->flags & P2P_DEV_SD_INFO ? "[SD_INFO]" : "",
3013 dev->flags & P2P_DEV_SD_SCHEDULE ? "[SD_SCHEDULE]" :
3014 "",
3015 dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
3016 "[PD_PEER_DISPLAY]" : "",
3017 dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
3018 "[PD_PEER_KEYPAD]" : "",
3019 dev->flags & P2P_DEV_USER_REJECTED ?
3020 "[USER_REJECTED]" : "",
3021 dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
3022 "[PEER_WAITING_RESPONSE]" : "",
3023 dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
3024 "[PREFER_PERSISTENT_GROUP]" : "",
3025 dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
3026 "[WAIT_GO_NEG_RESPONSE]" : "",
3027 dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
3028 "[WAIT_GO_NEG_CONFIRM]" : "",
3029 dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
3030 "[GROUP_CLIENT_ONLY]" : "",
3031 dev->flags & P2P_DEV_FORCE_FREQ ?
3032 "[FORCE_FREQ]" : "",
3033 dev->flags & P2P_DEV_PD_FOR_JOIN ?
3034 "[PD_FOR_JOIN]" : "",
3035 dev->status,
3036 dev->wait_count,
3037 dev->invitation_reqs);
3038 if (res < 0 || res >= end - pos)
3039 return pos - buf;
3040 pos += res;
3041
3042 if (dev->ext_listen_period) {
3043 res = os_snprintf(pos, end - pos,
3044 "ext_listen_period=%u\n"
3045 "ext_listen_interval=%u\n",
3046 dev->ext_listen_period,
3047 dev->ext_listen_interval);
3048 if (res < 0 || res >= end - pos)
3049 return pos - buf;
3050 pos += res;
3051 }
3052
3053 if (dev->oper_ssid_len) {
3054 res = os_snprintf(pos, end - pos,
3055 "oper_ssid=%s\n",
3056 wpa_ssid_txt(dev->oper_ssid,
3057 dev->oper_ssid_len));
3058 if (res < 0 || res >= end - pos)
3059 return pos - buf;
3060 pos += res;
3061 }
3062
3063 return pos - buf;
3064 }
3065
3066
p2p_set_client_discoverability(struct p2p_data * p2p,int enabled)3067 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
3068 {
3069 if (enabled) {
3070 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client "
3071 "discoverability enabled");
3072 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3073 } else {
3074 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client "
3075 "discoverability disabled");
3076 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3077 }
3078 }
3079
3080
p2p_build_presence_req(u32 duration1,u32 interval1,u32 duration2,u32 interval2)3081 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
3082 u32 duration2, u32 interval2)
3083 {
3084 struct wpabuf *req;
3085 struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
3086 u8 *len;
3087
3088 req = wpabuf_alloc(100);
3089 if (req == NULL)
3090 return NULL;
3091
3092 if (duration1 || interval1) {
3093 os_memset(&desc1, 0, sizeof(desc1));
3094 desc1.count_type = 1;
3095 desc1.duration = duration1;
3096 desc1.interval = interval1;
3097 ptr1 = &desc1;
3098
3099 if (duration2 || interval2) {
3100 os_memset(&desc2, 0, sizeof(desc2));
3101 desc2.count_type = 2;
3102 desc2.duration = duration2;
3103 desc2.interval = interval2;
3104 ptr2 = &desc2;
3105 }
3106 }
3107
3108 p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
3109 len = p2p_buf_add_ie_hdr(req);
3110 p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
3111 p2p_buf_update_ie_hdr(req, len);
3112
3113 return req;
3114 }
3115
3116
p2p_presence_req(struct p2p_data * p2p,const u8 * go_interface_addr,const u8 * own_interface_addr,unsigned int freq,u32 duration1,u32 interval1,u32 duration2,u32 interval2)3117 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
3118 const u8 *own_interface_addr, unsigned int freq,
3119 u32 duration1, u32 interval1, u32 duration2,
3120 u32 interval2)
3121 {
3122 struct wpabuf *req;
3123
3124 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send Presence Request to "
3125 "GO " MACSTR " (own interface " MACSTR ") freq=%u dur1=%u "
3126 "int1=%u dur2=%u int2=%u",
3127 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
3128 freq, duration1, interval1, duration2, interval2);
3129
3130 req = p2p_build_presence_req(duration1, interval1, duration2,
3131 interval2);
3132 if (req == NULL)
3133 return -1;
3134
3135 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3136 if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
3137 go_interface_addr,
3138 wpabuf_head(req), wpabuf_len(req), 200) < 0) {
3139 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3140 "P2P: Failed to send Action frame");
3141 }
3142 wpabuf_free(req);
3143
3144 return 0;
3145 }
3146
3147
p2p_build_presence_resp(u8 status,const u8 * noa,size_t noa_len,u8 dialog_token)3148 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
3149 size_t noa_len, u8 dialog_token)
3150 {
3151 struct wpabuf *resp;
3152 u8 *len;
3153
3154 resp = wpabuf_alloc(100 + noa_len);
3155 if (resp == NULL)
3156 return NULL;
3157
3158 p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
3159 len = p2p_buf_add_ie_hdr(resp);
3160 p2p_buf_add_status(resp, status);
3161 if (noa) {
3162 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
3163 wpabuf_put_le16(resp, noa_len);
3164 wpabuf_put_data(resp, noa, noa_len);
3165 } else
3166 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
3167 p2p_buf_update_ie_hdr(resp, len);
3168
3169 return resp;
3170 }
3171
3172
p2p_process_presence_req(struct p2p_data * p2p,const u8 * da,const u8 * sa,const u8 * data,size_t len,int rx_freq)3173 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
3174 const u8 *sa, const u8 *data, size_t len,
3175 int rx_freq)
3176 {
3177 struct p2p_message msg;
3178 u8 status;
3179 struct wpabuf *resp;
3180 size_t g;
3181 struct p2p_group *group = NULL;
3182 int parsed = 0;
3183 u8 noa[50];
3184 int noa_len;
3185
3186 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3187 "P2P: Received P2P Action - P2P Presence Request");
3188
3189 for (g = 0; g < p2p->num_groups; g++) {
3190 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
3191 ETH_ALEN) == 0) {
3192 group = p2p->groups[g];
3193 break;
3194 }
3195 }
3196 if (group == NULL) {
3197 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3198 "P2P: Ignore P2P Presence Request for unknown group "
3199 MACSTR, MAC2STR(da));
3200 return;
3201 }
3202
3203 if (p2p_parse(data, len, &msg) < 0) {
3204 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3205 "P2P: Failed to parse P2P Presence Request");
3206 status = P2P_SC_FAIL_INVALID_PARAMS;
3207 goto fail;
3208 }
3209 parsed = 1;
3210
3211 if (msg.noa == NULL) {
3212 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3213 "P2P: No NoA attribute in P2P Presence Request");
3214 status = P2P_SC_FAIL_INVALID_PARAMS;
3215 goto fail;
3216 }
3217
3218 status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
3219
3220 fail:
3221 if (p2p->cfg->get_noa)
3222 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
3223 sizeof(noa));
3224 else
3225 noa_len = -1;
3226 resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
3227 noa_len > 0 ? noa_len : 0,
3228 msg.dialog_token);
3229 if (parsed)
3230 p2p_parse_free(&msg);
3231 if (resp == NULL)
3232 return;
3233
3234 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3235 if (p2p_send_action(p2p, rx_freq, sa, da, da,
3236 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
3237 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3238 "P2P: Failed to send Action frame");
3239 }
3240 wpabuf_free(resp);
3241 }
3242
3243
p2p_process_presence_resp(struct p2p_data * p2p,const u8 * da,const u8 * sa,const u8 * data,size_t len)3244 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
3245 const u8 *sa, const u8 *data, size_t len)
3246 {
3247 struct p2p_message msg;
3248
3249 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3250 "P2P: Received P2P Action - P2P Presence Response");
3251
3252 if (p2p_parse(data, len, &msg) < 0) {
3253 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3254 "P2P: Failed to parse P2P Presence Response");
3255 return;
3256 }
3257
3258 if (msg.status == NULL || msg.noa == NULL) {
3259 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3260 "P2P: No Status or NoA attribute in P2P Presence "
3261 "Response");
3262 p2p_parse_free(&msg);
3263 return;
3264 }
3265
3266 if (*msg.status) {
3267 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3268 "P2P: P2P Presence Request was rejected: status %u",
3269 *msg.status);
3270 p2p_parse_free(&msg);
3271 return;
3272 }
3273
3274 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3275 "P2P: P2P Presence Request was accepted");
3276 wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
3277 msg.noa, msg.noa_len);
3278 /* TODO: process NoA */
3279 p2p_parse_free(&msg);
3280 }
3281
3282
p2p_ext_listen_timeout(void * eloop_ctx,void * timeout_ctx)3283 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
3284 {
3285 struct p2p_data *p2p = eloop_ctx;
3286
3287 if (p2p->ext_listen_interval) {
3288 /* Schedule next extended listen timeout */
3289 eloop_register_timeout(p2p->ext_listen_interval_sec,
3290 p2p->ext_listen_interval_usec,
3291 p2p_ext_listen_timeout, p2p, NULL);
3292 }
3293
3294 if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
3295 /*
3296 * This should not really happen, but it looks like the Listen
3297 * command may fail is something else (e.g., a scan) was
3298 * running at an inconvenient time. As a workaround, allow new
3299 * Extended Listen operation to be started.
3300 */
3301 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Previous "
3302 "Extended Listen operation had not been completed - "
3303 "try again");
3304 p2p->ext_listen_only = 0;
3305 p2p_set_state(p2p, P2P_IDLE);
3306 }
3307
3308 if (p2p->state != P2P_IDLE) {
3309 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip Extended "
3310 "Listen timeout in active state (%s)",
3311 p2p_state_txt(p2p->state));
3312 return;
3313 }
3314
3315 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Extended Listen timeout");
3316 p2p->ext_listen_only = 1;
3317 if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
3318 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start "
3319 "Listen state for Extended Listen Timing");
3320 p2p->ext_listen_only = 0;
3321 }
3322 }
3323
3324
p2p_ext_listen(struct p2p_data * p2p,unsigned int period,unsigned int interval)3325 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
3326 unsigned int interval)
3327 {
3328 if (period > 65535 || interval > 65535 || period > interval ||
3329 (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
3330 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3331 "P2P: Invalid Extended Listen Timing request: "
3332 "period=%u interval=%u", period, interval);
3333 return -1;
3334 }
3335
3336 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
3337
3338 if (interval == 0) {
3339 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3340 "P2P: Disabling Extended Listen Timing");
3341 p2p->ext_listen_period = 0;
3342 p2p->ext_listen_interval = 0;
3343 return 0;
3344 }
3345
3346 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3347 "P2P: Enabling Extended Listen Timing: period %u msec, "
3348 "interval %u msec", period, interval);
3349 p2p->ext_listen_period = period;
3350 p2p->ext_listen_interval = interval;
3351 p2p->ext_listen_interval_sec = interval / 1000;
3352 p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
3353
3354 eloop_register_timeout(p2p->ext_listen_interval_sec,
3355 p2p->ext_listen_interval_usec,
3356 p2p_ext_listen_timeout, p2p, NULL);
3357
3358 return 0;
3359 }
3360
3361
p2p_deauth_notif(struct p2p_data * p2p,const u8 * bssid,u16 reason_code,const u8 * ie,size_t ie_len)3362 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3363 const u8 *ie, size_t ie_len)
3364 {
3365 struct p2p_message msg;
3366
3367 if (bssid == NULL || ie == NULL)
3368 return;
3369
3370 os_memset(&msg, 0, sizeof(msg));
3371 if (p2p_parse_ies(ie, ie_len, &msg))
3372 return;
3373 if (msg.minor_reason_code == NULL)
3374 return;
3375
3376 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO,
3377 "P2P: Deauthentication notification BSSID " MACSTR
3378 " reason_code=%u minor_reason_code=%u",
3379 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3380
3381 p2p_parse_free(&msg);
3382 }
3383
3384
p2p_disassoc_notif(struct p2p_data * p2p,const u8 * bssid,u16 reason_code,const u8 * ie,size_t ie_len)3385 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3386 const u8 *ie, size_t ie_len)
3387 {
3388 struct p2p_message msg;
3389
3390 if (bssid == NULL || ie == NULL)
3391 return;
3392
3393 os_memset(&msg, 0, sizeof(msg));
3394 if (p2p_parse_ies(ie, ie_len, &msg))
3395 return;
3396 if (msg.minor_reason_code == NULL)
3397 return;
3398
3399 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO,
3400 "P2P: Disassociation notification BSSID " MACSTR
3401 " reason_code=%u minor_reason_code=%u",
3402 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3403
3404 p2p_parse_free(&msg);
3405 }
3406
3407
p2p_set_managed_oper(struct p2p_data * p2p,int enabled)3408 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
3409 {
3410 if (enabled) {
3411 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P "
3412 "Device operations enabled");
3413 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
3414 } else {
3415 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P "
3416 "Device operations disabled");
3417 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
3418 }
3419 }
3420
3421
p2p_set_listen_channel(struct p2p_data * p2p,u8 reg_class,u8 channel)3422 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel)
3423 {
3424 if (p2p_channel_to_freq(p2p->cfg->country, reg_class, channel) < 0)
3425 return -1;
3426
3427 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Set Listen channel: "
3428 "reg_class %u channel %u", reg_class, channel);
3429 p2p->cfg->reg_class = reg_class;
3430 p2p->cfg->channel = channel;
3431
3432 return 0;
3433 }
3434
3435
p2p_set_ssid_postfix(struct p2p_data * p2p,const u8 * postfix,size_t len)3436 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
3437 {
3438 wpa_hexdump_ascii(MSG_DEBUG, "P2P: New SSID postfix", postfix, len);
3439 if (postfix == NULL) {
3440 p2p->cfg->ssid_postfix_len = 0;
3441 return 0;
3442 }
3443 if (len > sizeof(p2p->cfg->ssid_postfix))
3444 return -1;
3445 os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
3446 p2p->cfg->ssid_postfix_len = len;
3447 return 0;
3448 }
3449
3450
p2p_set_oper_channel(struct p2p_data * p2p,u8 op_reg_class,u8 op_channel,int cfg_op_channel)3451 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
3452 int cfg_op_channel)
3453 {
3454 if (p2p_channel_to_freq(p2p->cfg->country, op_reg_class, op_channel)
3455 < 0)
3456 return -1;
3457
3458 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, "P2P: Set Operating channel: "
3459 "reg_class %u channel %u", op_reg_class, op_channel);
3460 p2p->cfg->op_reg_class = op_reg_class;
3461 p2p->cfg->op_channel = op_channel;
3462 p2p->cfg->cfg_op_channel = cfg_op_channel;
3463 return 0;
3464 }
3465
3466
p2p_get_interface_addr(struct p2p_data * p2p,const u8 * dev_addr,u8 * iface_addr)3467 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
3468 u8 *iface_addr)
3469 {
3470 struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
3471 if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
3472 return -1;
3473 os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
3474 return 0;
3475 }
3476
3477
p2p_get_dev_addr(struct p2p_data * p2p,const u8 * iface_addr,u8 * dev_addr)3478 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
3479 u8 *dev_addr)
3480 {
3481 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
3482 if (dev == NULL)
3483 return -1;
3484 os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
3485 return 0;
3486 }
3487
3488
p2p_set_peer_filter(struct p2p_data * p2p,const u8 * addr)3489 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
3490 {
3491 os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
3492 if (is_zero_ether_addr(p2p->peer_filter))
3493 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Disable peer "
3494 "filter");
3495 else
3496 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Enable peer "
3497 "filter for " MACSTR, MAC2STR(p2p->peer_filter));
3498 }
3499
3500
p2p_set_cross_connect(struct p2p_data * p2p,int enabled)3501 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
3502 {
3503 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Cross connection %s",
3504 enabled ? "enabled" : "disabled");
3505 if (p2p->cross_connect == enabled)
3506 return;
3507 p2p->cross_connect = enabled;
3508 /* TODO: may need to tear down any action group where we are GO(?) */
3509 }
3510
3511
p2p_get_oper_freq(struct p2p_data * p2p,const u8 * iface_addr)3512 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
3513 {
3514 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
3515 if (dev == NULL)
3516 return -1;
3517 if (dev->oper_freq <= 0)
3518 return -1;
3519 return dev->oper_freq;
3520 }
3521
3522
p2p_set_intra_bss_dist(struct p2p_data * p2p,int enabled)3523 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
3524 {
3525 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Intra BSS distribution %s",
3526 enabled ? "enabled" : "disabled");
3527 p2p->cfg->p2p_intra_bss = enabled;
3528 }
3529
3530
p2p_update_channel_list(struct p2p_data * p2p,struct p2p_channels * chan)3531 void p2p_update_channel_list(struct p2p_data *p2p, struct p2p_channels *chan)
3532 {
3533 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update channel list");
3534 os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
3535 }
3536
3537
p2p_send_action(struct p2p_data * p2p,unsigned int freq,const u8 * dst,const u8 * src,const u8 * bssid,const u8 * buf,size_t len,unsigned int wait_time)3538 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3539 const u8 *src, const u8 *bssid, const u8 *buf,
3540 size_t len, unsigned int wait_time)
3541 {
3542 if (p2p->p2p_scan_running) {
3543 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay Action "
3544 "frame TX until p2p_scan completes");
3545 if (p2p->after_scan_tx) {
3546 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped "
3547 "previous pending Action frame TX");
3548 os_free(p2p->after_scan_tx);
3549 }
3550 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
3551 len);
3552 if (p2p->after_scan_tx == NULL)
3553 return -1;
3554 p2p->after_scan_tx->freq = freq;
3555 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
3556 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
3557 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
3558 p2p->after_scan_tx->len = len;
3559 p2p->after_scan_tx->wait_time = wait_time;
3560 os_memcpy(p2p->after_scan_tx + 1, buf, len);
3561 return 0;
3562 }
3563
3564 return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
3565 buf, len, wait_time);
3566 }
3567
3568
p2p_set_best_channels(struct p2p_data * p2p,int freq_24,int freq_5,int freq_overall)3569 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
3570 int freq_overall)
3571 {
3572 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Best channel: 2.4 GHz: %d,"
3573 " 5 GHz: %d, overall: %d", freq_24, freq_5, freq_overall);
3574 p2p->best_freq_24 = freq_24;
3575 p2p->best_freq_5 = freq_5;
3576 p2p->best_freq_overall = freq_overall;
3577 }
3578
3579
p2p_get_go_neg_peer(struct p2p_data * p2p)3580 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
3581 {
3582 if (p2p == NULL || p2p->go_neg_peer == NULL)
3583 return NULL;
3584 return p2p->go_neg_peer->info.p2p_device_addr;
3585 }
3586
3587
3588 const struct p2p_peer_info *
p2p_get_peer_found(struct p2p_data * p2p,const u8 * addr,int next)3589 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
3590 {
3591 struct p2p_device *dev;
3592
3593 if (addr) {
3594 dev = p2p_get_device(p2p, addr);
3595 if (!dev)
3596 return NULL;
3597
3598 if (!next) {
3599 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
3600 return NULL;
3601
3602 return &dev->info;
3603 } else {
3604 do {
3605 dev = dl_list_first(&dev->list,
3606 struct p2p_device,
3607 list);
3608 if (&dev->list == &p2p->devices)
3609 return NULL;
3610 } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
3611 }
3612 } else {
3613 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3614 if (!dev)
3615 return NULL;
3616 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
3617 dev = dl_list_first(&dev->list,
3618 struct p2p_device,
3619 list);
3620 if (&dev->list == &p2p->devices)
3621 return NULL;
3622 }
3623 }
3624
3625 return &dev->info;
3626 }
3627