blob: aaacc9ac05b01ec5a597752fd2bec91363530669 [file] [log] [blame]
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001/*
2 * Wi-Fi Direct - P2P module
3 * Copyright (c) 2009-2010, Atheros Communications
4 *
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08005 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07007 */
8
9#include "includes.h"
10
11#include "common.h"
12#include "eloop.h"
13#include "common/ieee802_11_defs.h"
14#include "common/ieee802_11_common.h"
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -080015#include "common/wpa_ctrl.h"
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070016#include "wps/wps_i.h"
17#include "p2p_i.h"
18#include "p2p.h"
19
20
21static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx);
22static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev);
23static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
24 const u8 *sa, const u8 *data, size_t len,
25 int rx_freq);
26static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
27 const u8 *sa, const u8 *data,
28 size_t len);
29static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx);
30static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx);
31
32
33/*
34 * p2p_scan recovery timeout
35 *
36 * Many drivers are using 30 second timeout on scan results. Allow a bit larger
37 * timeout for this to avoid hitting P2P timeout unnecessarily.
38 */
39#define P2P_SCAN_TIMEOUT 35
40
41/**
42 * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer
43 * entries will be removed
44 */
Dmitry Shmidt2fb777c2012-05-02 12:29:53 -070045#ifdef ANDROID_P2P
46#define P2P_PEER_EXPIRATION_AGE 30
47#else
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070048#define P2P_PEER_EXPIRATION_AGE 300
Dmitry Shmidt2fb777c2012-05-02 12:29:53 -070049#endif
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070050
51#define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2)
52
Dmitry Shmidt2fb777c2012-05-02 12:29:53 -070053#ifdef ANDROID_P2P
54int p2p_connection_in_progress(struct p2p_data *p2p)
55{
56 int ret = 0;
57
58 switch (p2p->state) {
59 case P2P_CONNECT:
60 case P2P_CONNECT_LISTEN:
61 case P2P_GO_NEG:
62 case P2P_WAIT_PEER_CONNECT:
Dmitry Shmidt98f9e762012-05-30 11:18:46 -070063 case P2P_WAIT_PEER_IDLE:
Dmitry Shmidt2fb777c2012-05-02 12:29:53 -070064 case P2P_PROVISIONING:
65 case P2P_INVITE:
66 case P2P_INVITE_LISTEN:
67 ret = 1;
68 break;
69
70 default:
Dmitry Shmidt98f9e762012-05-30 11:18:46 -070071 wpa_printf(MSG_DEBUG, "p2p_connection_in_progress state %d", p2p->state);
Dmitry Shmidt2fb777c2012-05-02 12:29:53 -070072 ret = 0;
73 }
74
75 return ret;
76}
77#endif
78
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070079static void p2p_expire_peers(struct p2p_data *p2p)
80{
81 struct p2p_device *dev, *n;
82 struct os_time now;
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -080083 size_t i;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070084
85 os_get_time(&now);
86 dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
87 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec)
88 continue;
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -080089
90 if (p2p->cfg->go_connected &&
91 p2p->cfg->go_connected(p2p->cfg->cb_ctx,
92 dev->info.p2p_device_addr)) {
93 /*
94 * We are connected as a client to a group in which the
95 * peer is the GO, so do not expire the peer entry.
96 */
97 os_get_time(&dev->last_seen);
98 continue;
99 }
100
101 for (i = 0; i < p2p->num_groups; i++) {
102 if (p2p_group_is_client_connected(
103 p2p->groups[i], dev->info.p2p_device_addr))
104 break;
105 }
106 if (i < p2p->num_groups) {
107 /*
108 * The peer is connected as a client in a group where
109 * we are the GO, so do not expire the peer entry.
110 */
111 os_get_time(&dev->last_seen);
112 continue;
113 }
114
Dmitry Shmidt2fb777c2012-05-02 12:29:53 -0700115#ifdef ANDROID_P2P
116 /* If Connection is in progress, don't expire the peer
117 */
118 if (p2p_connection_in_progress(p2p))
119 continue;
120#endif
121
Dmitry Shmidt04949592012-07-19 12:16:46 -0700122 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Expiring old peer "
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700123 "entry " MACSTR, MAC2STR(dev->info.p2p_device_addr));
Irfan Sherifff44b9c42012-06-13 11:09:23 -0700124#ifdef ANDROID_P2P
125 /* SD_FAIR_POLICY: Update the current sd_dev_list pointer to next device */
126 if(&dev->list == p2p->sd_dev_list)
127 p2p->sd_dev_list = dev->list.next;
128#endif
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700129 dl_list_del(&dev->list);
130 p2p_device_free(p2p, dev);
131 }
132}
133
134
135static void p2p_expiration_timeout(void *eloop_ctx, void *timeout_ctx)
136{
137 struct p2p_data *p2p = eloop_ctx;
138 p2p_expire_peers(p2p);
139 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
140 p2p_expiration_timeout, p2p, NULL);
141}
142
143
144static const char * p2p_state_txt(int state)
145{
146 switch (state) {
147 case P2P_IDLE:
148 return "IDLE";
149 case P2P_SEARCH:
150 return "SEARCH";
151 case P2P_CONNECT:
152 return "CONNECT";
153 case P2P_CONNECT_LISTEN:
154 return "CONNECT_LISTEN";
155 case P2P_GO_NEG:
156 return "GO_NEG";
157 case P2P_LISTEN_ONLY:
158 return "LISTEN_ONLY";
159 case P2P_WAIT_PEER_CONNECT:
160 return "WAIT_PEER_CONNECT";
161 case P2P_WAIT_PEER_IDLE:
162 return "WAIT_PEER_IDLE";
163 case P2P_SD_DURING_FIND:
164 return "SD_DURING_FIND";
165 case P2P_PROVISIONING:
166 return "PROVISIONING";
167 case P2P_PD_DURING_FIND:
168 return "PD_DURING_FIND";
169 case P2P_INVITE:
170 return "INVITE";
171 case P2P_INVITE_LISTEN:
172 return "INVITE_LISTEN";
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800173 case P2P_SEARCH_WHEN_READY:
174 return "SEARCH_WHEN_READY";
Dmitry Shmidt61d9df32012-08-29 16:22:06 -0700175 case P2P_CONTINUE_SEARCH_WHEN_READY:
176 return "CONTINUE_SEARCH_WHEN_READY";
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700177 default:
178 return "?";
179 }
180}
181
182
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800183u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr)
184{
185 struct p2p_device *dev = NULL;
186
187 if (!addr || !p2p)
188 return 0;
189
190 dev = p2p_get_device(p2p, addr);
191 if (dev)
192 return dev->wps_prov_info;
193 else
194 return 0;
195}
196
197
Dmitry Shmidt04949592012-07-19 12:16:46 -0700198void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr)
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800199{
200 struct p2p_device *dev = NULL;
201
Dmitry Shmidt04949592012-07-19 12:16:46 -0700202 if (!addr || !p2p)
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800203 return;
204
Dmitry Shmidt04949592012-07-19 12:16:46 -0700205 dev = p2p_get_device(p2p, addr);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800206 if (dev)
207 dev->wps_prov_info = 0;
208}
209
210
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700211void p2p_set_state(struct p2p_data *p2p, int new_state)
212{
213 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: State %s -> %s",
214 p2p_state_txt(p2p->state), p2p_state_txt(new_state));
215 p2p->state = new_state;
216}
217
218
219void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
220{
221 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
222 "P2P: Set timeout (state=%s): %u.%06u sec",
223 p2p_state_txt(p2p->state), sec, usec);
224 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
225 eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
226}
227
228
229void p2p_clear_timeout(struct p2p_data *p2p)
230{
231 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Clear timeout (state=%s)",
232 p2p_state_txt(p2p->state));
233 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
234}
235
236
237void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
238 int status)
239{
240 struct p2p_go_neg_results res;
241 p2p_clear_timeout(p2p);
242 p2p_set_state(p2p, P2P_IDLE);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800243 if (p2p->go_neg_peer)
244 p2p->go_neg_peer->wps_method = WPS_NOT_READY;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700245 p2p->go_neg_peer = NULL;
246
247 os_memset(&res, 0, sizeof(res));
248 res.status = status;
249 if (peer) {
250 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr,
251 ETH_ALEN);
252 os_memcpy(res.peer_interface_addr, peer->intended_addr,
253 ETH_ALEN);
254 }
255 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
256}
257
258
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800259static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700260{
261 unsigned int r, tu;
262 int freq;
263 struct wpabuf *ies;
264
265 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
266 "P2P: Starting short listen state (state=%s)",
267 p2p_state_txt(p2p->state));
268
269 freq = p2p_channel_to_freq(p2p->cfg->country, p2p->cfg->reg_class,
270 p2p->cfg->channel);
271 if (freq < 0) {
272 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
273 "P2P: Unknown regulatory class/channel");
274 return;
275 }
276
277 os_get_random((u8 *) &r, sizeof(r));
278 tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
279 p2p->min_disc_int) * 100;
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800280 if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu)
281 tu = p2p->max_disc_tu;
282 if (!dev_disc && tu < 100)
283 tu = 100; /* Need to wait in non-device discovery use cases */
284 if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen)
285 tu = p2p->cfg->max_listen * 1000 / 1024;
286
287 if (tu == 0) {
288 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip listen state "
289 "since duration was 0 TU");
290 p2p_set_timeout(p2p, 0, 0);
291 return;
292 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700293
294 p2p->pending_listen_freq = freq;
295 p2p->pending_listen_sec = 0;
296 p2p->pending_listen_usec = 1024 * tu;
297
298 ies = p2p_build_probe_resp_ies(p2p);
299 if (ies == NULL)
300 return;
301
302 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
303 ies) < 0) {
304 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
305 "P2P: Failed to start listen mode");
306 p2p->pending_listen_freq = 0;
307 }
308 wpabuf_free(ies);
309}
310
311
312int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
313{
314 int freq;
315 struct wpabuf *ies;
316
317 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
318 "P2P: Going to listen(only) state");
319
320 freq = p2p_channel_to_freq(p2p->cfg->country, p2p->cfg->reg_class,
321 p2p->cfg->channel);
322 if (freq < 0) {
323 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
324 "P2P: Unknown regulatory class/channel");
325 return -1;
326 }
327
328 p2p->pending_listen_freq = freq;
329 p2p->pending_listen_sec = timeout / 1000;
330 p2p->pending_listen_usec = (timeout % 1000) * 1000;
331
332 if (p2p->p2p_scan_running) {
Dmitry Shmidt04949592012-07-19 12:16:46 -0700333 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) {
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800334 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
335 "P2P: p2p_scan running - connect is already "
336 "pending - skip listen");
337 return 0;
338 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700339 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
340 "P2P: p2p_scan running - delay start of listen state");
341 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
342 return 0;
343 }
344
345 ies = p2p_build_probe_resp_ies(p2p);
346 if (ies == NULL)
347 return -1;
348
349 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
350 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
351 "P2P: Failed to start listen mode");
352 p2p->pending_listen_freq = 0;
353 wpabuf_free(ies);
354 return -1;
355 }
356 wpabuf_free(ies);
357
358 p2p_set_state(p2p, P2P_LISTEN_ONLY);
359
360 return 0;
361}
362
363
364static void p2p_device_clear_reported(struct p2p_data *p2p)
365{
366 struct p2p_device *dev;
367 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list)
368 dev->flags &= ~P2P_DEV_REPORTED;
369}
370
371
372/**
373 * p2p_get_device - Fetch a peer entry
374 * @p2p: P2P module context from p2p_init()
375 * @addr: P2P Device Address of the peer
376 * Returns: Pointer to the device entry or %NULL if not found
377 */
378struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
379{
380 struct p2p_device *dev;
381 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
382 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
383 return dev;
384 }
385 return NULL;
386}
387
388
389/**
390 * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
391 * @p2p: P2P module context from p2p_init()
392 * @addr: P2P Interface Address of the peer
393 * Returns: Pointer to the device entry or %NULL if not found
394 */
395struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
396 const u8 *addr)
397{
398 struct p2p_device *dev;
399 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
400 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
401 return dev;
402 }
403 return NULL;
404}
405
406
407/**
408 * p2p_create_device - Create a peer entry
409 * @p2p: P2P module context from p2p_init()
410 * @addr: P2P Device Address of the peer
411 * Returns: Pointer to the device entry or %NULL on failure
412 *
413 * If there is already an entry for the peer, it will be returned instead of
414 * creating a new one.
415 */
416static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
417 const u8 *addr)
418{
419 struct p2p_device *dev, *oldest = NULL;
420 size_t count = 0;
421
422 dev = p2p_get_device(p2p, addr);
423 if (dev)
424 return dev;
425
426 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
427 count++;
428 if (oldest == NULL ||
429 os_time_before(&dev->last_seen, &oldest->last_seen))
430 oldest = dev;
431 }
432 if (count + 1 > p2p->cfg->max_peers && oldest) {
433 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
434 "P2P: Remove oldest peer entry to make room for a new "
435 "peer");
Irfan Sherifff44b9c42012-06-13 11:09:23 -0700436#ifdef ANDROID_P2P
437 /* SD_FAIR_POLICY: Update the current sd_dev_list pointer to next device */
438 if(&oldest->list == p2p->sd_dev_list)
439 p2p->sd_dev_list = oldest->list.next;
440#endif
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700441 dl_list_del(&oldest->list);
442 p2p_device_free(p2p, oldest);
443 }
444
445 dev = os_zalloc(sizeof(*dev));
446 if (dev == NULL)
447 return NULL;
448 dl_list_add(&p2p->devices, &dev->list);
449 os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
450
451 return dev;
452}
453
454
455static void p2p_copy_client_info(struct p2p_device *dev,
456 struct p2p_client_info *cli)
457{
458 os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len);
459 dev->info.device_name[cli->dev_name_len] = '\0';
460 dev->info.dev_capab = cli->dev_capab;
461 dev->info.config_methods = cli->config_methods;
462 os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
463 dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
464 os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
465 dev->info.wps_sec_dev_type_list_len);
466}
467
468
469static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
470 const u8 *go_interface_addr, int freq,
471 const u8 *gi, size_t gi_len)
472{
473 struct p2p_group_info info;
474 size_t c;
475 struct p2p_device *dev;
476
477 if (gi == NULL)
478 return 0;
479
480 if (p2p_group_info_parse(gi, gi_len, &info) < 0)
481 return -1;
482
483 /*
484 * Clear old data for this group; if the devices are still in the
485 * group, the information will be restored in the loop following this.
486 */
487 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800488 if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700489 ETH_ALEN) == 0) {
490 os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
491 os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
492 }
493 }
494
495 for (c = 0; c < info.num_clients; c++) {
496 struct p2p_client_info *cli = &info.client[c];
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800497 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
498 ETH_ALEN) == 0)
499 continue; /* ignore our own entry */
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700500 dev = p2p_get_device(p2p, cli->p2p_device_addr);
501 if (dev) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700502 if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
Dmitry Shmidt04949592012-07-19 12:16:46 -0700503 P2P_DEV_PROBE_REQ_ONLY)) {
504 /*
505 * Update information since we have not
506 * received this directly from the client.
507 */
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700508 p2p_copy_client_info(dev, cli);
Dmitry Shmidt04949592012-07-19 12:16:46 -0700509 } else {
510 /*
511 * Need to update P2P Client Discoverability
512 * flag since it is valid only in P2P Group
513 * Info attribute.
514 */
515 dev->info.dev_capab &=
516 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
517 dev->info.dev_capab |=
518 cli->dev_capab &
519 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
520 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700521 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
522 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
523 }
524 } else {
525 dev = p2p_create_device(p2p, cli->p2p_device_addr);
526 if (dev == NULL)
527 continue;
528 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
529 p2p_copy_client_info(dev, cli);
530 dev->oper_freq = freq;
531 p2p->cfg->dev_found(p2p->cfg->cb_ctx,
532 dev->info.p2p_device_addr,
533 &dev->info, 1);
534 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
535 }
536
537 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
538 ETH_ALEN);
539 os_get_time(&dev->last_seen);
540 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
541 os_memcpy(dev->member_in_go_iface, go_interface_addr,
542 ETH_ALEN);
543 }
544
545 return 0;
546}
547
548
549static void p2p_copy_wps_info(struct p2p_device *dev, int probe_req,
550 const struct p2p_message *msg)
551{
552 os_memcpy(dev->info.device_name, msg->device_name,
553 sizeof(dev->info.device_name));
554
555 if (msg->manufacturer &&
556 msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
557 os_memset(dev->info.manufacturer, 0,
558 sizeof(dev->info.manufacturer));
559 os_memcpy(dev->info.manufacturer, msg->manufacturer,
560 msg->manufacturer_len);
561 }
562
563 if (msg->model_name &&
564 msg->model_name_len < sizeof(dev->info.model_name)) {
565 os_memset(dev->info.model_name, 0,
566 sizeof(dev->info.model_name));
567 os_memcpy(dev->info.model_name, msg->model_name,
568 msg->model_name_len);
569 }
570
571 if (msg->model_number &&
572 msg->model_number_len < sizeof(dev->info.model_number)) {
573 os_memset(dev->info.model_number, 0,
574 sizeof(dev->info.model_number));
575 os_memcpy(dev->info.model_number, msg->model_number,
576 msg->model_number_len);
577 }
578
579 if (msg->serial_number &&
580 msg->serial_number_len < sizeof(dev->info.serial_number)) {
581 os_memset(dev->info.serial_number, 0,
582 sizeof(dev->info.serial_number));
583 os_memcpy(dev->info.serial_number, msg->serial_number,
584 msg->serial_number_len);
585 }
586
587 if (msg->pri_dev_type)
588 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
589 sizeof(dev->info.pri_dev_type));
590 else if (msg->wps_pri_dev_type)
591 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
592 sizeof(dev->info.pri_dev_type));
593
594 if (msg->wps_sec_dev_type_list) {
595 os_memcpy(dev->info.wps_sec_dev_type_list,
596 msg->wps_sec_dev_type_list,
597 msg->wps_sec_dev_type_list_len);
598 dev->info.wps_sec_dev_type_list_len =
599 msg->wps_sec_dev_type_list_len;
600 }
601
602 if (msg->capability) {
Dmitry Shmidt04949592012-07-19 12:16:46 -0700603 /*
604 * P2P Client Discoverability bit is reserved in all frames
605 * that use this function, so do not change its value here.
606 */
607 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
608 dev->info.dev_capab |= msg->capability[0] &
609 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700610 dev->info.group_capab = msg->capability[1];
611 }
612
613 if (msg->ext_listen_timing) {
614 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
615 dev->ext_listen_interval =
616 WPA_GET_LE16(msg->ext_listen_timing + 2);
617 }
Dmitry Shmidt04949592012-07-19 12:16:46 -0700618
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700619 if (!probe_req) {
620 dev->info.config_methods = msg->config_methods ?
621 msg->config_methods : msg->wps_config_methods;
622 }
623}
624
625
626/**
Dmitry Shmidt04949592012-07-19 12:16:46 -0700627 * p2p_add_device - Add peer entries based on scan results or P2P frames
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700628 * @p2p: P2P module context from p2p_init()
629 * @addr: Source address of Beacon or Probe Response frame (may be either
630 * P2P Device Address or P2P Interface Address)
631 * @level: Signal level (signal strength of the received frame from the peer)
632 * @freq: Frequency on which the Beacon or Probe Response frame was received
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800633 * @age_ms: Age of the information in milliseconds
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700634 * @ies: IEs from the Beacon or Probe Response frame
635 * @ies_len: Length of ies buffer in octets
Dmitry Shmidt04949592012-07-19 12:16:46 -0700636 * @scan_res: Whether this was based on scan results
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700637 * Returns: 0 on success, -1 on failure
638 *
639 * If the scan result is for a GO, the clients in the group will also be added
640 * to the peer table. This function can also be used with some other frames
641 * like Provision Discovery Request that contains P2P Capability and P2P Device
642 * Info attributes.
643 */
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800644int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
645 unsigned int age_ms, int level, const u8 *ies,
646 size_t ies_len, int scan_res)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700647{
648 struct p2p_device *dev;
649 struct p2p_message msg;
650 const u8 *p2p_dev_addr;
651 int i;
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800652 struct os_time time_now, time_tmp_age, entry_ts;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700653
654 os_memset(&msg, 0, sizeof(msg));
655 if (p2p_parse_ies(ies, ies_len, &msg)) {
656 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
657 "P2P: Failed to parse P2P IE for a device entry");
658 p2p_parse_free(&msg);
659 return -1;
660 }
661
662 if (msg.p2p_device_addr)
663 p2p_dev_addr = msg.p2p_device_addr;
664 else if (msg.device_id)
665 p2p_dev_addr = msg.device_id;
666 else {
667 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
668 "P2P: Ignore scan data without P2P Device Info or "
669 "P2P Device Id");
670 p2p_parse_free(&msg);
671 return -1;
672 }
673
674 if (!is_zero_ether_addr(p2p->peer_filter) &&
675 os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
676 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Do not add peer "
677 "filter for " MACSTR " due to peer filter",
678 MAC2STR(p2p_dev_addr));
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800679 p2p_parse_free(&msg);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700680 return 0;
681 }
682
683 dev = p2p_create_device(p2p, p2p_dev_addr);
684 if (dev == NULL) {
685 p2p_parse_free(&msg);
686 return -1;
687 }
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800688
689 os_get_time(&time_now);
690 time_tmp_age.sec = age_ms / 1000;
691 time_tmp_age.usec = (age_ms % 1000) * 1000;
692 os_time_sub(&time_now, &time_tmp_age, &entry_ts);
693
694 /*
695 * Update the device entry only if the new peer
696 * entry is newer than the one previously stored.
697 */
698 if (dev->last_seen.usec > 0 &&
699 os_time_before(&entry_ts, &dev->last_seen)) {
700 p2p_parse_free(&msg);
701 return -1;
702 }
703
704 os_memcpy(&dev->last_seen, &entry_ts, sizeof(struct os_time));
705
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700706 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
707
708 if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
709 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
710 if (msg.ssid &&
711 (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
712 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
713 != 0)) {
714 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
715 dev->oper_ssid_len = msg.ssid[1];
716 }
717
718 if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
719 *msg.ds_params >= 1 && *msg.ds_params <= 14) {
720 int ds_freq;
721 if (*msg.ds_params == 14)
722 ds_freq = 2484;
723 else
724 ds_freq = 2407 + *msg.ds_params * 5;
725 if (freq != ds_freq) {
726 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
727 "P2P: Update Listen frequency based on DS "
728 "Parameter Set IE: %d -> %d MHz",
729 freq, ds_freq);
730 freq = ds_freq;
731 }
732 }
733
Dmitry Shmidt04949592012-07-19 12:16:46 -0700734 if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700735 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
736 "P2P: Update Listen frequency based on scan "
737 "results (" MACSTR " %d -> %d MHz (DS param %d)",
738 MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
739 freq, msg.ds_params ? *msg.ds_params : -1);
740 }
Dmitry Shmidt04949592012-07-19 12:16:46 -0700741 if (scan_res) {
742 dev->listen_freq = freq;
743 if (msg.group_info)
744 dev->oper_freq = freq;
745 }
Jouni Malinen75ecf522011-06-27 15:19:46 -0700746 dev->info.level = level;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700747
748 p2p_copy_wps_info(dev, 0, &msg);
749
750 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
751 wpabuf_free(dev->info.wps_vendor_ext[i]);
752 dev->info.wps_vendor_ext[i] = NULL;
753 }
754
755 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
756 if (msg.wps_vendor_ext[i] == NULL)
757 break;
758 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
759 msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
760 if (dev->info.wps_vendor_ext[i] == NULL)
761 break;
762 }
763
Dmitry Shmidt61d9df32012-08-29 16:22:06 -0700764 if (msg.wfd_subelems) {
765 wpabuf_free(dev->info.wfd_subelems);
766 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
767 }
768
Dmitry Shmidt04949592012-07-19 12:16:46 -0700769 if (scan_res) {
770 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
771 msg.group_info, msg.group_info_len);
772 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700773
774 p2p_parse_free(&msg);
775
776 if (p2p_pending_sd_req(p2p, dev))
777 dev->flags |= P2P_DEV_SD_SCHEDULE;
778
779 if (dev->flags & P2P_DEV_REPORTED)
780 return 0;
781
782 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
783 "P2P: Peer found with Listen frequency %d MHz", freq);
784 if (dev->flags & P2P_DEV_USER_REJECTED) {
785 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
786 "P2P: Do not report rejected device");
787 return 0;
788 }
789
790 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
791 !(dev->flags & P2P_DEV_REPORTED_ONCE));
792 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
793
794 return 0;
795}
796
797
798static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
799{
800 int i;
801
Dmitry Shmidt497c1d52011-07-21 15:19:46 -0700802 if (p2p->go_neg_peer == dev) {
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800803 /*
804 * If GO Negotiation is in progress, report that it has failed.
805 */
Dmitry Shmidt497c1d52011-07-21 15:19:46 -0700806 p2p_go_neg_failed(p2p, dev, -1);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700807 p2p->go_neg_peer = NULL;
Dmitry Shmidt497c1d52011-07-21 15:19:46 -0700808 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700809 if (p2p->invite_peer == dev)
810 p2p->invite_peer = NULL;
811 if (p2p->sd_peer == dev)
812 p2p->sd_peer = NULL;
813 if (p2p->pending_client_disc_go == dev)
814 p2p->pending_client_disc_go = NULL;
815
Dmitry Shmidtc55524a2011-07-07 11:18:38 -0700816 /* dev_lost() device, but only if it was previously dev_found() */
817 if (dev->flags & P2P_DEV_REPORTED_ONCE)
818 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
819 dev->info.p2p_device_addr);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700820
821 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
822 wpabuf_free(dev->info.wps_vendor_ext[i]);
823 dev->info.wps_vendor_ext[i] = NULL;
824 }
825
Dmitry Shmidt61d9df32012-08-29 16:22:06 -0700826 wpabuf_free(dev->info.wfd_subelems);
827
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700828 os_free(dev);
829}
830
831
832static int p2p_get_next_prog_freq(struct p2p_data *p2p)
833{
834 struct p2p_channels *c;
835 struct p2p_reg_class *cla;
836 size_t cl, ch;
837 int found = 0;
838 u8 reg_class;
839 u8 channel;
840 int freq;
841
842 c = &p2p->cfg->channels;
843 for (cl = 0; cl < c->reg_classes; cl++) {
844 cla = &c->reg_class[cl];
845 if (cla->reg_class != p2p->last_prog_scan_class)
846 continue;
847 for (ch = 0; ch < cla->channels; ch++) {
848 if (cla->channel[ch] == p2p->last_prog_scan_chan) {
849 found = 1;
850 break;
851 }
852 }
853 if (found)
854 break;
855 }
856
857 if (!found) {
858 /* Start from beginning */
859 reg_class = c->reg_class[0].reg_class;
860 channel = c->reg_class[0].channel[0];
861 } else {
862 /* Pick the next channel */
863 ch++;
864 if (ch == cla->channels) {
865 cl++;
866 if (cl == c->reg_classes)
867 cl = 0;
868 ch = 0;
869 }
870 reg_class = c->reg_class[cl].reg_class;
871 channel = c->reg_class[cl].channel[ch];
872 }
873
874 freq = p2p_channel_to_freq(p2p->cfg->country, reg_class, channel);
875 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Next progressive search "
876 "channel: reg_class %u channel %u -> %d MHz",
877 reg_class, channel, freq);
878 p2p->last_prog_scan_class = reg_class;
879 p2p->last_prog_scan_chan = channel;
880
881 if (freq == 2412 || freq == 2437 || freq == 2462)
882 return 0; /* No need to add social channels */
883 return freq;
884}
885
886
887static void p2p_search(struct p2p_data *p2p)
888{
889 int freq = 0;
890 enum p2p_scan_type type;
Dmitry Shmidt04949592012-07-19 12:16:46 -0700891 u16 pw_id = DEV_PW_DEFAULT;
Dmitry Shmidt61d9df32012-08-29 16:22:06 -0700892 int res;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700893
894 if (p2p->drv_in_listen) {
895 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is still "
896 "in Listen state - wait for it to end before "
897 "continuing");
898 return;
899 }
900 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
901
Dmitry Shmidt04949592012-07-19 12:16:46 -0700902 if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
903 (freq = p2p_get_next_prog_freq(p2p)) > 0) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700904 type = P2P_SCAN_SOCIAL_PLUS_ONE;
905 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search "
906 "(+ freq %u)", freq);
907 } else {
908 type = P2P_SCAN_SOCIAL;
909 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search");
910 }
911
Dmitry Shmidt61d9df32012-08-29 16:22:06 -0700912 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
913 p2p->num_req_dev_types, p2p->req_dev_types,
914 p2p->find_dev_id, pw_id);
915 if (res < 0) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700916 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
917 "P2P: Scan request failed");
918 p2p_continue_find(p2p);
Dmitry Shmidt61d9df32012-08-29 16:22:06 -0700919 } else if (res == 1) {
920 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Could not start "
921 "p2p_scan at this point - will try again after "
922 "previous scan completes");
923 p2p_set_state(p2p, P2P_CONTINUE_SEARCH_WHEN_READY);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700924 } else {
925 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan");
926 p2p->p2p_scan_running = 1;
927 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
928 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
929 p2p, NULL);
930 }
931}
932
933
934static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
935{
936 struct p2p_data *p2p = eloop_ctx;
937 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Find timeout -> stop");
938 p2p_stop_find(p2p);
939}
940
941
942static int p2p_run_after_scan(struct p2p_data *p2p)
943{
944 struct p2p_device *dev;
945 enum p2p_after_scan op;
946
947 if (p2p->after_scan_tx) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700948 /* TODO: schedule p2p_run_after_scan to be called from TX
949 * status callback(?) */
950 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send pending "
951 "Action frame at p2p_scan completion");
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800952 p2p->cfg->send_action(p2p->cfg->cb_ctx,
953 p2p->after_scan_tx->freq,
954 p2p->after_scan_tx->dst,
955 p2p->after_scan_tx->src,
956 p2p->after_scan_tx->bssid,
957 (u8 *) (p2p->after_scan_tx + 1),
958 p2p->after_scan_tx->len,
959 p2p->after_scan_tx->wait_time);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700960 os_free(p2p->after_scan_tx);
961 p2p->after_scan_tx = NULL;
Irfan Sherifff44b9c42012-06-13 11:09:23 -0700962#ifdef ANDROID_P2P
963 /* For SD frames, there is a scenario, where we can receive a SD request frame during p2p_scan.
964 * At that moment, we will send the SD response from this context. After sending the SD response,
965 * we need to continue p2p_find. But if we return 1 from here, p2p_find is going to be stopped.
966 */
967 return 0;
968#else
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700969 return 1;
Irfan Sherifff44b9c42012-06-13 11:09:23 -0700970#endif
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700971 }
972
973 op = p2p->start_after_scan;
974 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
975 switch (op) {
976 case P2P_AFTER_SCAN_NOTHING:
977 break;
978 case P2P_AFTER_SCAN_LISTEN:
979 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously "
980 "requested Listen state");
981 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
982 p2p->pending_listen_usec / 1000);
983 return 1;
984 case P2P_AFTER_SCAN_CONNECT:
985 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously "
986 "requested connect with " MACSTR,
987 MAC2STR(p2p->after_scan_peer));
988 dev = p2p_get_device(p2p, p2p->after_scan_peer);
989 if (dev == NULL) {
990 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer not "
991 "known anymore");
992 break;
993 }
994 p2p_connect_send(p2p, dev);
995 return 1;
996 }
997
998 return 0;
999}
1000
1001
1002static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1003{
1004 struct p2p_data *p2p = eloop_ctx;
1005 int running;
1006 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan timeout "
1007 "(running=%d)", p2p->p2p_scan_running);
1008 running = p2p->p2p_scan_running;
1009 /* Make sure we recover from missed scan results callback */
1010 p2p->p2p_scan_running = 0;
1011
1012 if (running)
1013 p2p_run_after_scan(p2p);
1014}
1015
1016
1017static void p2p_free_req_dev_types(struct p2p_data *p2p)
1018{
1019 p2p->num_req_dev_types = 0;
1020 os_free(p2p->req_dev_types);
1021 p2p->req_dev_types = NULL;
1022}
1023
1024
1025int p2p_find(struct p2p_data *p2p, unsigned int timeout,
1026 enum p2p_discovery_type type,
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08001027 unsigned int num_req_dev_types, const u8 *req_dev_types,
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001028 const u8 *dev_id, unsigned int search_delay)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001029{
1030 int res;
1031
1032 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting find (type=%d)",
1033 type);
1034 if (p2p->p2p_scan_running) {
1035 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan is "
1036 "already running");
1037 }
1038
1039 p2p_free_req_dev_types(p2p);
1040 if (req_dev_types && num_req_dev_types) {
1041 p2p->req_dev_types = os_malloc(num_req_dev_types *
1042 WPS_DEV_TYPE_LEN);
1043 if (p2p->req_dev_types == NULL)
1044 return -1;
1045 os_memcpy(p2p->req_dev_types, req_dev_types,
1046 num_req_dev_types * WPS_DEV_TYPE_LEN);
1047 p2p->num_req_dev_types = num_req_dev_types;
1048 }
1049
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08001050 if (dev_id) {
1051 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
1052 p2p->find_dev_id = p2p->find_dev_id_buf;
1053 } else
1054 p2p->find_dev_id = NULL;
1055
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001056 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1057 p2p_clear_timeout(p2p);
1058 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1059 p2p->find_type = type;
1060 p2p_device_clear_reported(p2p);
1061 p2p_set_state(p2p, P2P_SEARCH);
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001062 p2p->search_delay = search_delay;
1063 p2p->in_search_delay = 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001064 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001065 p2p->last_p2p_find_timeout = timeout;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001066 if (timeout)
1067 eloop_register_timeout(timeout, 0, p2p_find_timeout,
1068 p2p, NULL);
1069 switch (type) {
1070 case P2P_FIND_START_WITH_FULL:
1071 case P2P_FIND_PROGRESSIVE:
1072 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1073 p2p->num_req_dev_types,
Dmitry Shmidt04949592012-07-19 12:16:46 -07001074 p2p->req_dev_types, dev_id,
1075 DEV_PW_DEFAULT);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001076 break;
1077 case P2P_FIND_ONLY_SOCIAL:
1078 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1079 p2p->num_req_dev_types,
Dmitry Shmidt04949592012-07-19 12:16:46 -07001080 p2p->req_dev_types, dev_id,
1081 DEV_PW_DEFAULT);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001082 break;
1083 default:
1084 return -1;
1085 }
1086
1087 if (res == 0) {
1088 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan");
1089 p2p->p2p_scan_running = 1;
1090 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1091 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1092 p2p, NULL);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001093 } else if (res == 1) {
1094 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Could not start "
1095 "p2p_scan at this point - will try again after "
1096 "previous scan completes");
1097 res = 0;
1098 p2p_set_state(p2p, P2P_SEARCH_WHEN_READY);
1099 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001100 } else {
1101 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start "
1102 "p2p_scan");
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001103 p2p_set_state(p2p, P2P_IDLE);
1104 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001105 }
1106
1107 return res;
1108}
1109
Dmitry Shmidt2fb777c2012-05-02 12:29:53 -07001110#ifdef ANDROID_P2P
1111int p2p_search_pending(struct p2p_data *p2p)
1112{
1113 if(p2p == NULL)
1114 return 0;
1115
1116 if(p2p->state == P2P_SEARCH_WHEN_READY)
1117 return 1;
1118
1119 return 0;
1120}
1121#endif
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001122
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001123int p2p_other_scan_completed(struct p2p_data *p2p)
1124{
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001125 if (p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY) {
1126 p2p_set_state(p2p, P2P_SEARCH);
1127 p2p_search(p2p);
1128 return 1;
1129 }
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001130 if (p2p->state != P2P_SEARCH_WHEN_READY)
1131 return 0;
1132 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting pending P2P find "
1133 "now that previous scan was completed");
1134 if (p2p_find(p2p, p2p->last_p2p_find_timeout, p2p->find_type,
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08001135 p2p->num_req_dev_types, p2p->req_dev_types,
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001136 p2p->find_dev_id, p2p->search_delay) < 0)
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001137 return 0;
1138 return 1;
1139}
1140
1141
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001142void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1143{
1144 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Stopping find");
1145 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1146 p2p_clear_timeout(p2p);
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001147 if (p2p->state == P2P_SEARCH ||
1148 p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY ||
1149 p2p->state == P2P_SEARCH_WHEN_READY)
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08001150 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, P2P_EVENT_FIND_STOPPED);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001151 p2p_set_state(p2p, P2P_IDLE);
1152 p2p_free_req_dev_types(p2p);
1153 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1154 p2p->go_neg_peer = NULL;
1155 p2p->sd_peer = NULL;
1156 p2p->invite_peer = NULL;
Dmitry Shmidt04949592012-07-19 12:16:46 -07001157 p2p_stop_listen_for_freq(p2p, freq);
1158}
1159
1160
1161void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1162{
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001163 if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1164 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip stop_listen "
1165 "since we are on correct channel for response");
1166 return;
1167 }
Dmitry Shmidt04949592012-07-19 12:16:46 -07001168 if (p2p->in_listen) {
1169 p2p->in_listen = 0;
1170 p2p_clear_timeout(p2p);
1171 }
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001172 if (p2p->drv_in_listen) {
1173 /*
1174 * The driver may not deliver callback to p2p_listen_end()
1175 * when the operation gets canceled, so clear the internal
1176 * variable that is tracking driver state.
1177 */
1178 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Clear "
1179 "drv_in_listen (%d)", p2p->drv_in_listen);
1180 p2p->drv_in_listen = 0;
1181 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001182 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1183}
1184
1185
1186void p2p_stop_find(struct p2p_data *p2p)
1187{
1188 p2p_stop_find_for_freq(p2p, 0);
1189}
1190
1191
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001192static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1193 unsigned int force_freq,
1194 unsigned int pref_freq)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001195{
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001196 u8 op_class, op_channel;
1197 unsigned int freq = force_freq ? force_freq : pref_freq;
1198
1199 if (p2p_freq_to_channel(p2p->cfg->country, freq,
1200 &op_class, &op_channel) < 0) {
1201 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1202 "P2P: Unsupported frequency %u MHz", freq);
1203 return -1;
1204 }
1205
1206 if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel)) {
1207 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1208 "P2P: Frequency %u MHz (oper_class %u channel %u) not "
1209 "allowed for P2P", freq, op_class, op_channel);
1210 return -1;
1211 }
1212
1213 p2p->op_reg_class = op_class;
1214 p2p->op_channel = op_channel;
1215
1216 if (force_freq) {
1217 p2p->channels.reg_classes = 1;
1218 p2p->channels.reg_class[0].channels = 1;
1219 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1220 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001221 } else {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001222 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1223 sizeof(struct p2p_channels));
1224 }
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001225
1226 return 0;
1227}
1228
1229
1230static void p2p_prepare_channel_best(struct p2p_data *p2p)
1231{
1232 u8 op_class, op_channel;
1233
1234 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1235 p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1236 p2p_freq_to_channel(p2p->cfg->country, p2p->best_freq_overall,
1237 &op_class, &op_channel) == 0) {
1238 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Select best "
1239 "overall channel as operating channel preference");
1240 p2p->op_reg_class = op_class;
1241 p2p->op_channel = op_channel;
1242 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1243 p2p_supported_freq(p2p, p2p->best_freq_5) &&
1244 p2p_freq_to_channel(p2p->cfg->country, p2p->best_freq_5,
1245 &op_class, &op_channel) == 0) {
1246 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Select best 5 GHz "
1247 "channel as operating channel preference");
1248 p2p->op_reg_class = op_class;
1249 p2p->op_channel = op_channel;
1250 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1251 p2p_supported_freq(p2p, p2p->best_freq_24) &&
1252 p2p_freq_to_channel(p2p->cfg->country, p2p->best_freq_24,
1253 &op_class, &op_channel) == 0) {
1254 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Select best 2.4 "
1255 "GHz channel as operating channel preference");
1256 p2p->op_reg_class = op_class;
1257 p2p->op_channel = op_channel;
1258 } else {
1259 p2p->op_reg_class = p2p->cfg->op_reg_class;
1260 p2p->op_channel = p2p->cfg->op_channel;
1261 }
1262
1263 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1264 sizeof(struct p2p_channels));
1265}
1266
1267
1268/**
1269 * p2p_prepare_channel - Select operating channel for GO Negotiation
1270 * @p2p: P2P module context from p2p_init()
1271 * @dev: Selected peer device
1272 * @force_freq: Forced frequency in MHz or 0 if not forced
1273 * @pref_freq: Preferred frequency in MHz or 0 if no preference
1274 * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1275 *
1276 * This function is used to do initial operating channel selection for GO
1277 * Negotiation prior to having received peer information. The selected channel
1278 * may be further optimized in p2p_reselect_channel() once the peer information
1279 * is available.
1280 */
1281static int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
1282 unsigned int force_freq, unsigned int pref_freq)
1283{
1284 if (force_freq || pref_freq) {
1285 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq) < 0)
1286 return -1;
1287 } else {
1288 p2p_prepare_channel_best(p2p);
1289 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001290 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1291 "P2P: Own preference for operation channel: "
1292 "Operating Class %u Channel %u%s",
1293 p2p->op_reg_class, p2p->op_channel,
1294 force_freq ? " (forced)" : "");
1295
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001296 if (force_freq)
1297 dev->flags |= P2P_DEV_FORCE_FREQ;
1298 else
1299 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1300
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001301 return 0;
1302}
1303
1304
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001305static void p2p_set_dev_persistent(struct p2p_device *dev,
1306 int persistent_group)
1307{
1308 switch (persistent_group) {
1309 case 0:
1310 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1311 P2P_DEV_PREFER_PERSISTENT_RECONN);
1312 break;
1313 case 1:
1314 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1315 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1316 break;
1317 case 2:
1318 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1319 P2P_DEV_PREFER_PERSISTENT_RECONN;
1320 break;
1321 }
1322}
1323
1324
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001325int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1326 enum p2p_wps_method wps_method,
1327 int go_intent, const u8 *own_interface_addr,
Dmitry Shmidt04949592012-07-19 12:16:46 -07001328 unsigned int force_freq, int persistent_group,
1329 const u8 *force_ssid, size_t force_ssid_len,
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001330 int pd_before_go_neg, unsigned int pref_freq)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001331{
1332 struct p2p_device *dev;
1333
1334 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1335 "P2P: Request to start group negotiation - peer=" MACSTR
1336 " GO Intent=%d Intended Interface Address=" MACSTR
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001337 " wps_method=%d persistent_group=%d pd_before_go_neg=%d",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001338 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001339 wps_method, persistent_group, pd_before_go_neg);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001340
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001341 dev = p2p_get_device(p2p, peer_addr);
1342 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1343 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1344 "P2P: Cannot connect to unknown P2P Device " MACSTR,
1345 MAC2STR(peer_addr));
1346 return -1;
1347 }
1348
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001349 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq) < 0)
1350 return -1;
1351
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001352 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1353 if (!(dev->info.dev_capab &
1354 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1355 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1356 "P2P: Cannot connect to P2P Device " MACSTR
1357 " that is in a group and is not discoverable",
1358 MAC2STR(peer_addr));
1359 return -1;
1360 }
1361 if (dev->oper_freq <= 0) {
1362 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1363 "P2P: Cannot connect to P2P Device " MACSTR
1364 " with incomplete information",
1365 MAC2STR(peer_addr));
1366 return -1;
1367 }
1368
1369 /*
1370 * First, try to connect directly. If the peer does not
1371 * acknowledge frames, assume it is sleeping and use device
1372 * discoverability via the GO at that point.
1373 */
1374 }
1375
Dmitry Shmidt04949592012-07-19 12:16:46 -07001376 p2p->ssid_set = 0;
1377 if (force_ssid) {
1378 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1379 force_ssid, force_ssid_len);
1380 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1381 p2p->ssid_len = force_ssid_len;
1382 p2p->ssid_set = 1;
1383 }
1384
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001385 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1386 dev->flags &= ~P2P_DEV_USER_REJECTED;
1387 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1388 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
Dmitry Shmidt04949592012-07-19 12:16:46 -07001389 if (pd_before_go_neg)
1390 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001391 else {
Dmitry Shmidt04949592012-07-19 12:16:46 -07001392 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001393 /*
1394 * Assign dialog token here to use the same value in each
1395 * retry within the same GO Negotiation exchange.
1396 */
1397 dev->dialog_token++;
1398 if (dev->dialog_token == 0)
1399 dev->dialog_token = 1;
1400 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001401 dev->connect_reqs = 0;
1402 dev->go_neg_req_sent = 0;
1403 dev->go_state = UNKNOWN_GO;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001404 p2p_set_dev_persistent(dev, persistent_group);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001405 p2p->go_intent = go_intent;
1406 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1407
1408 if (p2p->state != P2P_IDLE)
1409 p2p_stop_find(p2p);
1410
1411 if (p2p->after_scan_tx) {
1412 /*
1413 * We need to drop the pending frame to avoid issues with the
1414 * new GO Negotiation, e.g., when the pending frame was from a
1415 * previous attempt at starting a GO Negotiation.
1416 */
1417 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped "
1418 "previous pending Action frame TX that was waiting "
1419 "for p2p_scan completion");
1420 os_free(p2p->after_scan_tx);
1421 p2p->after_scan_tx = NULL;
1422 }
1423
1424 dev->wps_method = wps_method;
1425 dev->status = P2P_SC_SUCCESS;
1426
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001427 if (p2p->p2p_scan_running) {
1428 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1429 "P2P: p2p_scan running - delay connect send");
1430 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1431 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1432 return 0;
1433 }
1434 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1435
1436 return p2p_connect_send(p2p, dev);
1437}
1438
1439
1440int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1441 enum p2p_wps_method wps_method,
1442 int go_intent, const u8 *own_interface_addr,
Dmitry Shmidt04949592012-07-19 12:16:46 -07001443 unsigned int force_freq, int persistent_group,
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001444 const u8 *force_ssid, size_t force_ssid_len,
1445 unsigned int pref_freq)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001446{
1447 struct p2p_device *dev;
1448
1449 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1450 "P2P: Request to authorize group negotiation - peer=" MACSTR
1451 " GO Intent=%d Intended Interface Address=" MACSTR
1452 " wps_method=%d persistent_group=%d",
1453 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1454 wps_method, persistent_group);
1455
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001456 dev = p2p_get_device(p2p, peer_addr);
1457 if (dev == NULL) {
1458 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1459 "P2P: Cannot authorize unknown P2P Device " MACSTR,
1460 MAC2STR(peer_addr));
1461 return -1;
1462 }
1463
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001464 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq) < 0)
1465 return -1;
1466
Dmitry Shmidt04949592012-07-19 12:16:46 -07001467 p2p->ssid_set = 0;
1468 if (force_ssid) {
1469 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1470 force_ssid, force_ssid_len);
1471 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1472 p2p->ssid_len = force_ssid_len;
1473 p2p->ssid_set = 1;
1474 }
1475
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001476 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1477 dev->flags &= ~P2P_DEV_USER_REJECTED;
1478 dev->go_neg_req_sent = 0;
1479 dev->go_state = UNKNOWN_GO;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001480 p2p_set_dev_persistent(dev, persistent_group);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001481 p2p->go_intent = go_intent;
1482 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1483
1484 dev->wps_method = wps_method;
1485 dev->status = P2P_SC_SUCCESS;
1486
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001487 return 0;
1488}
1489
1490
1491void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1492 struct p2p_device *dev, struct p2p_message *msg)
1493{
1494 os_get_time(&dev->last_seen);
1495
1496 p2p_copy_wps_info(dev, 0, msg);
1497
1498 if (msg->listen_channel) {
1499 int freq;
1500 freq = p2p_channel_to_freq((char *) msg->listen_channel,
1501 msg->listen_channel[3],
1502 msg->listen_channel[4]);
1503 if (freq < 0) {
1504 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1505 "P2P: Unknown peer Listen channel: "
1506 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1507 msg->listen_channel[0],
1508 msg->listen_channel[1],
1509 msg->listen_channel[2],
1510 msg->listen_channel[3],
1511 msg->listen_channel[4]);
1512 } else {
1513 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update "
1514 "peer " MACSTR " Listen channel: %u -> %u MHz",
1515 MAC2STR(dev->info.p2p_device_addr),
1516 dev->listen_freq, freq);
1517 dev->listen_freq = freq;
1518 }
1519 }
1520
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001521 if (msg->wfd_subelems) {
1522 wpabuf_free(dev->info.wfd_subelems);
1523 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1524 }
1525
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001526 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1527 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1528 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1529 "P2P: Completed device entry based on data from "
1530 "GO Negotiation Request");
1531 } else {
1532 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1533 "P2P: Created device entry based on GO Neg Req: "
1534 MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1535 "listen_freq=%d",
1536 MAC2STR(dev->info.p2p_device_addr),
1537 dev->info.dev_capab, dev->info.group_capab,
1538 dev->info.device_name, dev->listen_freq);
1539 }
1540
1541 dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1542
1543 if (dev->flags & P2P_DEV_USER_REJECTED) {
1544 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1545 "P2P: Do not report rejected device");
1546 return;
1547 }
1548
1549 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1550 !(dev->flags & P2P_DEV_REPORTED_ONCE));
1551 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1552}
1553
1554
1555void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1556{
1557 os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1558 p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1559 os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1560 p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1561 *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1562}
1563
1564
1565int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1566{
1567 p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1568 p2p_random(params->passphrase, 8);
1569 return 0;
1570}
1571
1572
1573void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1574{
1575 struct p2p_go_neg_results res;
1576 int go = peer->go_state == LOCAL_GO;
1577 struct p2p_channels intersection;
1578 int freqs;
1579 size_t i, j;
1580
1581 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1582 "P2P: GO Negotiation with " MACSTR " completed (%s will be "
1583 "GO)", MAC2STR(peer->info.p2p_device_addr),
1584 go ? "local end" : "peer");
1585
1586 os_memset(&res, 0, sizeof(res));
1587 res.role_go = go;
1588 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1589 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1590 res.wps_method = peer->wps_method;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001591 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1592 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1593 res.persistent_group = 2;
1594 else
1595 res.persistent_group = 1;
1596 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001597
1598 if (go) {
1599 /* Setup AP mode for WPS provisioning */
1600 res.freq = p2p_channel_to_freq(p2p->cfg->country,
1601 p2p->op_reg_class,
1602 p2p->op_channel);
1603 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1604 res.ssid_len = p2p->ssid_len;
1605 p2p_random(res.passphrase, 8);
1606 } else {
1607 res.freq = peer->oper_freq;
1608 if (p2p->ssid_len) {
1609 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1610 res.ssid_len = p2p->ssid_len;
1611 }
1612 }
1613
1614 p2p_channels_intersect(&p2p->channels, &peer->channels,
1615 &intersection);
1616 freqs = 0;
1617 for (i = 0; i < intersection.reg_classes; i++) {
1618 struct p2p_reg_class *c = &intersection.reg_class[i];
1619 if (freqs + 1 == P2P_MAX_CHANNELS)
1620 break;
1621 for (j = 0; j < c->channels; j++) {
1622 int freq;
1623 if (freqs + 1 == P2P_MAX_CHANNELS)
1624 break;
1625 freq = p2p_channel_to_freq(peer->country, c->reg_class,
1626 c->channel[j]);
1627 if (freq < 0)
1628 continue;
1629 res.freq_list[freqs++] = freq;
1630 }
1631 }
1632
1633 res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1634
1635 p2p_clear_timeout(p2p);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001636 p2p->ssid_set = 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001637 peer->go_neg_req_sent = 0;
1638 peer->wps_method = WPS_NOT_READY;
1639
1640 p2p_set_state(p2p, P2P_PROVISIONING);
1641 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1642}
1643
1644
1645static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1646 const u8 *data, size_t len, int rx_freq)
1647{
1648 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1649 "P2P: RX P2P Public Action from " MACSTR, MAC2STR(sa));
1650 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1651
1652 if (len < 1)
1653 return;
1654
1655 switch (data[0]) {
1656 case P2P_GO_NEG_REQ:
1657 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1658 break;
1659 case P2P_GO_NEG_RESP:
1660 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1661 break;
1662 case P2P_GO_NEG_CONF:
1663 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1664 break;
1665 case P2P_INVITATION_REQ:
1666 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1667 rx_freq);
1668 break;
1669 case P2P_INVITATION_RESP:
1670 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1671 break;
1672 case P2P_PROV_DISC_REQ:
1673 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1674 break;
1675 case P2P_PROV_DISC_RESP:
1676 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1677 break;
1678 case P2P_DEV_DISC_REQ:
1679 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1680 break;
1681 case P2P_DEV_DISC_RESP:
1682 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1683 break;
1684 default:
1685 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1686 "P2P: Unsupported P2P Public Action frame type %d",
1687 data[0]);
1688 break;
1689 }
1690}
1691
1692
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001693static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1694 const u8 *sa, const u8 *bssid, const u8 *data,
1695 size_t len, int freq)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001696{
1697 if (len < 1)
1698 return;
1699
1700 switch (data[0]) {
1701 case WLAN_PA_VENDOR_SPECIFIC:
1702 data++;
1703 len--;
1704 if (len < 3)
1705 return;
1706 if (WPA_GET_BE24(data) != OUI_WFA)
1707 return;
1708
1709 data += 3;
1710 len -= 3;
1711 if (len < 1)
1712 return;
1713
1714 if (*data != P2P_OUI_TYPE)
1715 return;
1716
1717 p2p_rx_p2p_action(p2p, sa, data + 1, len - 1, freq);
1718 break;
1719 case WLAN_PA_GAS_INITIAL_REQ:
1720 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1721 break;
1722 case WLAN_PA_GAS_INITIAL_RESP:
1723 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1724 break;
1725 case WLAN_PA_GAS_COMEBACK_REQ:
1726 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1727 break;
1728 case WLAN_PA_GAS_COMEBACK_RESP:
1729 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1730 break;
1731 }
1732}
1733
1734
1735void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1736 const u8 *bssid, u8 category,
1737 const u8 *data, size_t len, int freq)
1738{
1739 if (category == WLAN_ACTION_PUBLIC) {
1740 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1741 return;
1742 }
1743
1744 if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1745 return;
1746
1747 if (len < 4)
1748 return;
1749
1750 if (WPA_GET_BE24(data) != OUI_WFA)
1751 return;
1752 data += 3;
1753 len -= 3;
1754
1755 if (*data != P2P_OUI_TYPE)
1756 return;
1757 data++;
1758 len--;
1759
1760 /* P2P action frame */
1761 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1762 "P2P: RX P2P Action from " MACSTR, MAC2STR(sa));
1763 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1764
1765 if (len < 1)
1766 return;
1767 switch (data[0]) {
1768 case P2P_NOA:
1769 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1770 "P2P: Received P2P Action - Notice of Absence");
1771 /* TODO */
1772 break;
1773 case P2P_PRESENCE_REQ:
1774 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1775 break;
1776 case P2P_PRESENCE_RESP:
1777 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1778 break;
1779 case P2P_GO_DISC_REQ:
1780 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1781 break;
1782 default:
1783 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1784 "P2P: Received P2P Action - unknown type %u", data[0]);
1785 break;
1786 }
1787}
1788
1789
1790static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1791{
1792 struct p2p_data *p2p = eloop_ctx;
1793 if (p2p->go_neg_peer == NULL)
1794 return;
1795 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1796 p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1797 p2p_connect_send(p2p, p2p->go_neg_peer);
1798}
1799
1800
1801static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1802{
1803 struct p2p_data *p2p = eloop_ctx;
1804 if (p2p->invite_peer == NULL)
1805 return;
1806 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1807 p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr);
1808}
1809
1810
1811static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1812 const u8 *ie, size_t ie_len)
1813{
1814 struct p2p_message msg;
1815 struct p2p_device *dev;
1816
1817 os_memset(&msg, 0, sizeof(msg));
1818 if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1819 {
1820 p2p_parse_free(&msg);
1821 return; /* not a P2P probe */
1822 }
1823
1824 if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
1825 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
1826 != 0) {
1827 /* The Probe Request is not part of P2P Device Discovery. It is
1828 * not known whether the source address of the frame is the P2P
1829 * Device Address or P2P Interface Address. Do not add a new
1830 * peer entry based on this frames.
1831 */
1832 p2p_parse_free(&msg);
1833 return;
1834 }
1835
1836 dev = p2p_get_device(p2p, addr);
1837 if (dev) {
1838 if (dev->country[0] == 0 && msg.listen_channel)
1839 os_memcpy(dev->country, msg.listen_channel, 3);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001840 os_get_time(&dev->last_seen);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001841 p2p_parse_free(&msg);
1842 return; /* already known */
1843 }
1844
1845 dev = p2p_create_device(p2p, addr);
1846 if (dev == NULL) {
1847 p2p_parse_free(&msg);
1848 return;
1849 }
1850
1851 os_get_time(&dev->last_seen);
1852 dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
1853
1854 if (msg.listen_channel) {
1855 os_memcpy(dev->country, msg.listen_channel, 3);
1856 dev->listen_freq = p2p_channel_to_freq(dev->country,
1857 msg.listen_channel[3],
1858 msg.listen_channel[4]);
1859 }
1860
1861 p2p_copy_wps_info(dev, 1, &msg);
1862
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001863 if (msg.wfd_subelems) {
1864 wpabuf_free(dev->info.wfd_subelems);
1865 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
1866 }
1867
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001868 p2p_parse_free(&msg);
1869
1870 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1871 "P2P: Created device entry based on Probe Req: " MACSTR
1872 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
1873 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
1874 dev->info.group_capab, dev->info.device_name,
1875 dev->listen_freq);
1876}
1877
1878
1879struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
1880 const u8 *addr,
1881 struct p2p_message *msg)
1882{
1883 struct p2p_device *dev;
1884
1885 dev = p2p_get_device(p2p, addr);
1886 if (dev) {
1887 os_get_time(&dev->last_seen);
1888 return dev; /* already known */
1889 }
1890
1891 dev = p2p_create_device(p2p, addr);
1892 if (dev == NULL)
1893 return NULL;
1894
1895 p2p_add_dev_info(p2p, addr, dev, msg);
1896
1897 return dev;
1898}
1899
1900
1901static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
1902{
1903 if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
1904 return 1;
1905 if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
1906 WPA_GET_BE32(&req_dev_type[2]) == 0 &&
1907 WPA_GET_BE16(&req_dev_type[6]) == 0)
1908 return 1; /* Category match with wildcard OUI/sub-category */
1909 return 0;
1910}
1911
1912
1913int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
1914 size_t num_req_dev_type)
1915{
1916 size_t i;
1917 for (i = 0; i < num_req_dev_type; i++) {
1918 if (dev_type_match(dev_type, req_dev_type[i]))
1919 return 1;
1920 }
1921 return 0;
1922}
1923
1924
1925/**
1926 * p2p_match_dev_type - Match local device type with requested type
1927 * @p2p: P2P module context from p2p_init()
1928 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1929 * Returns: 1 on match, 0 on mismatch
1930 *
1931 * This function can be used to match the Requested Device Type attribute in
1932 * WPS IE with the local device types for deciding whether to reply to a Probe
1933 * Request frame.
1934 */
1935int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
1936{
1937 struct wps_parse_attr attr;
1938 size_t i;
1939
1940 if (wps_parse_msg(wps, &attr))
1941 return 1; /* assume no Requested Device Type attributes */
1942
1943 if (attr.num_req_dev_type == 0)
1944 return 1; /* no Requested Device Type attributes -> match */
1945
1946 if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
1947 attr.num_req_dev_type))
1948 return 1; /* Own Primary Device Type matches */
1949
1950 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++)
1951 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
1952 attr.req_dev_type,
1953 attr.num_req_dev_type))
1954 return 1; /* Own Secondary Device Type matches */
1955
1956 /* No matching device type found */
1957 return 0;
1958}
1959
1960
1961struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
1962{
1963 struct wpabuf *buf;
1964 u8 *len;
Dmitry Shmidt04949592012-07-19 12:16:46 -07001965 int pw_id = -1;
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001966 size_t extra = 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001967
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001968#ifdef CONFIG_WIFI_DISPLAY
1969 if (p2p->wfd_ie_probe_resp)
1970 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
1971#endif /* CONFIG_WIFI_DISPLAY */
1972
1973 buf = wpabuf_alloc(1000 + extra);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001974 if (buf == NULL)
1975 return NULL;
1976
Dmitry Shmidt04949592012-07-19 12:16:46 -07001977 if (p2p->go_neg_peer) {
1978 /* Advertise immediate availability of WPS credential */
1979 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
1980 }
1981
1982 p2p_build_wps_ie(p2p, buf, pw_id, 1);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001983
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001984#ifdef CONFIG_WIFI_DISPLAY
1985 if (p2p->wfd_ie_probe_resp)
1986 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
1987#endif /* CONFIG_WIFI_DISPLAY */
1988
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001989 /* P2P IE */
1990 len = p2p_buf_add_ie_hdr(buf);
Dmitry Shmidt04949592012-07-19 12:16:46 -07001991 p2p_buf_add_capability(buf, p2p->dev_capab &
1992 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001993 if (p2p->ext_listen_interval)
1994 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
1995 p2p->ext_listen_interval);
1996 p2p_buf_add_device_info(buf, p2p, NULL);
1997 p2p_buf_update_ie_hdr(buf, len);
1998
1999 return buf;
2000}
2001
2002
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002003static int is_11b(u8 rate)
2004{
2005 return rate == 0x02 || rate == 0x04 || rate == 0x0b || rate == 0x16;
2006}
2007
2008
2009static int supp_rates_11b_only(struct ieee802_11_elems *elems)
2010{
2011 int num_11b = 0, num_others = 0;
2012 int i;
2013
2014 if (elems->supp_rates == NULL && elems->ext_supp_rates == NULL)
2015 return 0;
2016
2017 for (i = 0; elems->supp_rates && i < elems->supp_rates_len; i++) {
2018 if (is_11b(elems->supp_rates[i]))
2019 num_11b++;
2020 else
2021 num_others++;
2022 }
2023
2024 for (i = 0; elems->ext_supp_rates && i < elems->ext_supp_rates_len;
2025 i++) {
2026 if (is_11b(elems->ext_supp_rates[i]))
2027 num_11b++;
2028 else
2029 num_others++;
2030 }
2031
2032 return num_11b > 0 && num_others == 0;
2033}
2034
2035
Dmitry Shmidt04949592012-07-19 12:16:46 -07002036static enum p2p_probe_req_status
2037p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2038 const u8 *bssid, const u8 *ie, size_t ie_len)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002039{
2040 struct ieee802_11_elems elems;
2041 struct wpabuf *buf;
2042 struct ieee80211_mgmt *resp;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002043 struct p2p_message msg;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002044 struct wpabuf *ies;
2045
2046 if (!p2p->in_listen || !p2p->drv_in_listen) {
2047 /* not in Listen state - ignore Probe Request */
Dmitry Shmidt04949592012-07-19 12:16:46 -07002048 return P2P_PREQ_NOT_LISTEN;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002049 }
2050
2051 if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
2052 ParseFailed) {
2053 /* Ignore invalid Probe Request frames */
Dmitry Shmidt04949592012-07-19 12:16:46 -07002054 return P2P_PREQ_MALFORMED;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002055 }
2056
2057 if (elems.p2p == NULL) {
2058 /* not a P2P probe - ignore it */
Dmitry Shmidt04949592012-07-19 12:16:46 -07002059 return P2P_PREQ_NOT_P2P;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002060 }
2061
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002062 if (dst && !is_broadcast_ether_addr(dst) &&
2063 os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2064 /* Not sent to the broadcast address or our P2P Device Address
2065 */
Dmitry Shmidt04949592012-07-19 12:16:46 -07002066 return P2P_PREQ_NOT_PROCESSED;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002067 }
2068
2069 if (bssid && !is_broadcast_ether_addr(bssid)) {
2070 /* Not sent to the Wildcard BSSID */
Dmitry Shmidt04949592012-07-19 12:16:46 -07002071 return P2P_PREQ_NOT_PROCESSED;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002072 }
2073
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002074 if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2075 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2076 0) {
2077 /* not using P2P Wildcard SSID - ignore */
Dmitry Shmidt04949592012-07-19 12:16:46 -07002078 return P2P_PREQ_NOT_PROCESSED;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002079 }
2080
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002081 if (supp_rates_11b_only(&elems)) {
2082 /* Indicates support for 11b rates only */
Dmitry Shmidt04949592012-07-19 12:16:46 -07002083 return P2P_PREQ_NOT_P2P;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002084 }
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002085
2086 os_memset(&msg, 0, sizeof(msg));
2087 if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2088 /* Could not parse P2P attributes */
Dmitry Shmidt04949592012-07-19 12:16:46 -07002089 return P2P_PREQ_NOT_P2P;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002090 }
2091
2092 if (msg.device_id &&
Dmitry Shmidt04949592012-07-19 12:16:46 -07002093 os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002094 /* Device ID did not match */
2095 p2p_parse_free(&msg);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002096 return P2P_PREQ_NOT_PROCESSED;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002097 }
2098
2099 /* Check Requested Device Type match */
2100 if (msg.wps_attributes &&
2101 !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2102 /* No match with Requested Device Type */
2103 p2p_parse_free(&msg);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002104 return P2P_PREQ_NOT_PROCESSED;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002105 }
2106 p2p_parse_free(&msg);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002107
Dmitry Shmidt04949592012-07-19 12:16:46 -07002108 if (!p2p->cfg->send_probe_resp) {
2109 /* Response generated elsewhere */
2110 return P2P_PREQ_NOT_PROCESSED;
2111 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002112
2113 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2114 "P2P: Reply to P2P Probe Request in Listen state");
2115
2116 /*
2117 * We do not really have a specific BSS that this frame is advertising,
2118 * so build a frame that has some information in valid format. This is
2119 * really only used for discovery purposes, not to learn exact BSS
2120 * parameters.
2121 */
2122 ies = p2p_build_probe_resp_ies(p2p);
2123 if (ies == NULL)
Dmitry Shmidt04949592012-07-19 12:16:46 -07002124 return P2P_PREQ_NOT_PROCESSED;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002125
2126 buf = wpabuf_alloc(200 + wpabuf_len(ies));
2127 if (buf == NULL) {
2128 wpabuf_free(ies);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002129 return P2P_PREQ_NOT_PROCESSED;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002130 }
2131
2132 resp = NULL;
2133 resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
2134
2135 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2136 (WLAN_FC_STYPE_PROBE_RESP << 4));
2137 os_memcpy(resp->da, addr, ETH_ALEN);
2138 os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2139 os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2140 resp->u.probe_resp.beacon_int = host_to_le16(100);
2141 /* hardware or low-level driver will setup seq_ctrl and timestamp */
2142 resp->u.probe_resp.capab_info =
2143 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2144 WLAN_CAPABILITY_PRIVACY |
2145 WLAN_CAPABILITY_SHORT_SLOT_TIME);
2146
2147 wpabuf_put_u8(buf, WLAN_EID_SSID);
2148 wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2149 wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2150
2151 wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2152 wpabuf_put_u8(buf, 8);
2153 wpabuf_put_u8(buf, (60 / 5) | 0x80);
2154 wpabuf_put_u8(buf, 90 / 5);
2155 wpabuf_put_u8(buf, (120 / 5) | 0x80);
2156 wpabuf_put_u8(buf, 180 / 5);
2157 wpabuf_put_u8(buf, (240 / 5) | 0x80);
2158 wpabuf_put_u8(buf, 360 / 5);
2159 wpabuf_put_u8(buf, 480 / 5);
2160 wpabuf_put_u8(buf, 540 / 5);
2161
2162 wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2163 wpabuf_put_u8(buf, 1);
2164 wpabuf_put_u8(buf, p2p->cfg->channel);
2165
2166 wpabuf_put_buf(buf, ies);
2167 wpabuf_free(ies);
2168
2169 p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
2170
2171 wpabuf_free(buf);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002172
2173 return P2P_PREQ_NOT_PROCESSED;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002174}
2175
2176
Dmitry Shmidt04949592012-07-19 12:16:46 -07002177enum p2p_probe_req_status
2178p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2179 const u8 *bssid, const u8 *ie, size_t ie_len)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002180{
Dmitry Shmidt04949592012-07-19 12:16:46 -07002181 enum p2p_probe_req_status res;
2182
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002183 p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2184
Dmitry Shmidt04949592012-07-19 12:16:46 -07002185 res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002186
2187 if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2188 p2p->go_neg_peer &&
2189 os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2190 == 0) {
2191 /* Received a Probe Request from GO Negotiation peer */
2192 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2193 "P2P: Found GO Negotiation peer - try to start GO "
2194 "negotiation from timeout");
2195 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002196 return P2P_PREQ_PROCESSED;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002197 }
2198
2199 if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2200 p2p->invite_peer &&
2201 os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2202 == 0) {
2203 /* Received a Probe Request from Invite peer */
2204 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2205 "P2P: Found Invite peer - try to start Invite from "
2206 "timeout");
2207 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002208 return P2P_PREQ_PROCESSED;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002209 }
2210
Dmitry Shmidt04949592012-07-19 12:16:46 -07002211 return res;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002212}
2213
2214
2215static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2216 u8 *buf, size_t len, struct wpabuf *p2p_ie)
2217{
2218 struct wpabuf *tmp;
2219 u8 *lpos;
2220 size_t tmplen;
2221 int res;
2222 u8 group_capab;
2223
2224 if (p2p_ie == NULL)
2225 return 0; /* WLAN AP is not a P2P manager */
2226
2227 /*
2228 * (Re)Association Request - P2P IE
2229 * P2P Capability attribute (shall be present)
2230 * P2P Interface attribute (present if concurrent device and
2231 * P2P Management is enabled)
2232 */
2233 tmp = wpabuf_alloc(200);
2234 if (tmp == NULL)
2235 return -1;
2236
2237 lpos = p2p_buf_add_ie_hdr(tmp);
2238 group_capab = 0;
2239 if (p2p->num_groups > 0) {
2240 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2241 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2242 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2243 p2p->cross_connect)
2244 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2245 }
2246 p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2247 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2248 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2249 p2p_buf_add_p2p_interface(tmp, p2p);
2250 p2p_buf_update_ie_hdr(tmp, lpos);
2251
2252 tmplen = wpabuf_len(tmp);
2253 if (tmplen > len)
2254 res = -1;
2255 else {
2256 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2257 res = tmplen;
2258 }
2259 wpabuf_free(tmp);
2260
2261 return res;
2262}
2263
2264
2265int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2266 size_t len, int p2p_group, struct wpabuf *p2p_ie)
2267{
2268 struct wpabuf *tmp;
2269 u8 *lpos;
2270 struct p2p_device *peer;
2271 size_t tmplen;
2272 int res;
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002273 size_t extra = 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002274
2275 if (!p2p_group)
2276 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2277
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002278#ifdef CONFIG_WIFI_DISPLAY
2279 if (p2p->wfd_ie_assoc_req)
2280 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2281#endif /* CONFIG_WIFI_DISPLAY */
2282
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002283 /*
2284 * (Re)Association Request - P2P IE
2285 * P2P Capability attribute (shall be present)
2286 * Extended Listen Timing (may be present)
2287 * P2P Device Info attribute (shall be present)
2288 */
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002289 tmp = wpabuf_alloc(200 + extra);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002290 if (tmp == NULL)
2291 return -1;
2292
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002293#ifdef CONFIG_WIFI_DISPLAY
2294 if (p2p->wfd_ie_assoc_req)
2295 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2296#endif /* CONFIG_WIFI_DISPLAY */
2297
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002298 peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2299
2300 lpos = p2p_buf_add_ie_hdr(tmp);
2301 p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2302 if (p2p->ext_listen_interval)
2303 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2304 p2p->ext_listen_interval);
2305 p2p_buf_add_device_info(tmp, p2p, peer);
2306 p2p_buf_update_ie_hdr(tmp, lpos);
2307
2308 tmplen = wpabuf_len(tmp);
2309 if (tmplen > len)
2310 res = -1;
2311 else {
2312 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2313 res = tmplen;
2314 }
2315 wpabuf_free(tmp);
2316
2317 return res;
2318}
2319
2320
2321int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2322{
2323 struct wpabuf *p2p_ie;
2324 int ret;
2325
2326 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2327 if (p2p_ie == NULL)
2328 return 0;
2329
2330 ret = p2p_attr_text(p2p_ie, buf, end);
2331 wpabuf_free(p2p_ie);
2332 return ret;
2333}
2334
2335
Dmitry Shmidt04949592012-07-19 12:16:46 -07002336int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2337{
2338 struct p2p_message msg;
2339
2340 os_memset(&msg, 0, sizeof(msg));
2341 if (p2p_parse_p2p_ie(p2p_ie, &msg))
2342 return -1;
2343
2344 if (msg.p2p_device_addr) {
2345 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2346 return 0;
2347 } else if (msg.device_id) {
2348 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2349 return 0;
2350 }
2351 return -1;
2352}
2353
2354
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08002355int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2356{
2357 struct wpabuf *p2p_ie;
Dmitry Shmidt04949592012-07-19 12:16:46 -07002358 int ret;
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08002359
2360 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2361 P2P_IE_VENDOR_TYPE);
2362 if (p2p_ie == NULL)
2363 return -1;
Dmitry Shmidt04949592012-07-19 12:16:46 -07002364 ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08002365 wpabuf_free(p2p_ie);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002366 return ret;
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08002367}
2368
2369
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002370static void p2p_clear_go_neg(struct p2p_data *p2p)
2371{
2372 p2p->go_neg_peer = NULL;
2373 p2p_clear_timeout(p2p);
2374 p2p_set_state(p2p, P2P_IDLE);
2375}
2376
2377
2378void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2379{
2380 if (p2p->go_neg_peer == NULL) {
2381 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2382 "P2P: No pending Group Formation - "
2383 "ignore WPS registration success notification");
2384 return; /* No pending Group Formation */
2385 }
2386
2387 if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2388 0) {
2389 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2390 "P2P: Ignore WPS registration success notification "
2391 "for " MACSTR " (GO Negotiation peer " MACSTR ")",
2392 MAC2STR(mac_addr),
2393 MAC2STR(p2p->go_neg_peer->intended_addr));
2394 return; /* Ignore unexpected peer address */
2395 }
2396
2397 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2398 "P2P: Group Formation completed successfully with " MACSTR,
2399 MAC2STR(mac_addr));
2400
2401 p2p_clear_go_neg(p2p);
2402}
2403
2404
2405void p2p_group_formation_failed(struct p2p_data *p2p)
2406{
2407 if (p2p->go_neg_peer == NULL) {
2408 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2409 "P2P: No pending Group Formation - "
2410 "ignore group formation failure notification");
2411 return; /* No pending Group Formation */
2412 }
2413
2414 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2415 "P2P: Group Formation failed with " MACSTR,
2416 MAC2STR(p2p->go_neg_peer->intended_addr));
2417
2418 p2p_clear_go_neg(p2p);
2419}
2420
2421
2422struct p2p_data * p2p_init(const struct p2p_config *cfg)
2423{
2424 struct p2p_data *p2p;
2425
2426 if (cfg->max_peers < 1)
2427 return NULL;
2428
2429 p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2430 if (p2p == NULL)
2431 return NULL;
2432 p2p->cfg = (struct p2p_config *) (p2p + 1);
2433 os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2434 if (cfg->dev_name)
2435 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2436 if (cfg->manufacturer)
2437 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2438 if (cfg->model_name)
2439 p2p->cfg->model_name = os_strdup(cfg->model_name);
2440 if (cfg->model_number)
2441 p2p->cfg->model_number = os_strdup(cfg->model_number);
2442 if (cfg->serial_number)
2443 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002444 if (cfg->pref_chan) {
2445 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2446 sizeof(struct p2p_channel));
2447 if (p2p->cfg->pref_chan) {
2448 os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2449 cfg->num_pref_chan *
2450 sizeof(struct p2p_channel));
2451 } else
2452 p2p->cfg->num_pref_chan = 0;
2453 }
2454
Irfan Sherifff44b9c42012-06-13 11:09:23 -07002455#ifdef ANDROID_P2P
2456 /* 100ms listen time is too less to receive the response frames in some scenarios
2457 * increasing min listen time to 200ms.
2458 */
2459 p2p->min_disc_int = 2;
2460 /* SD_FAIR_POLICY: Initializing the SD current serviced pointer to NULL */
2461 p2p->sd_dev_list = NULL;
2462#else
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002463 p2p->min_disc_int = 1;
Irfan Sherifff44b9c42012-06-13 11:09:23 -07002464#endif
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002465 p2p->max_disc_int = 3;
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08002466 p2p->max_disc_tu = -1;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002467
2468 os_get_random(&p2p->next_tie_breaker, 1);
2469 p2p->next_tie_breaker &= 0x01;
2470 if (cfg->sd_request)
2471 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2472 p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2473 if (cfg->concurrent_operations)
2474 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2475 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2476
2477 dl_list_init(&p2p->devices);
2478
2479 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2480 p2p_expiration_timeout, p2p, NULL);
2481
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002482 p2p->go_timeout = 100;
2483 p2p->client_timeout = 20;
2484
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002485 return p2p;
2486}
2487
2488
2489void p2p_deinit(struct p2p_data *p2p)
2490{
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002491#ifdef CONFIG_WIFI_DISPLAY
2492 wpabuf_free(p2p->wfd_ie_beacon);
2493 wpabuf_free(p2p->wfd_ie_probe_req);
2494 wpabuf_free(p2p->wfd_ie_probe_resp);
2495 wpabuf_free(p2p->wfd_ie_assoc_req);
2496 wpabuf_free(p2p->wfd_ie_invitation);
2497 wpabuf_free(p2p->wfd_ie_prov_disc_req);
2498 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2499 wpabuf_free(p2p->wfd_ie_go_neg);
2500 wpabuf_free(p2p->wfd_dev_info);
2501 wpabuf_free(p2p->wfd_assoc_bssid);
2502 wpabuf_free(p2p->wfd_coupled_sink_info);
2503#endif /* CONFIG_WIFI_DISPLAY */
2504
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002505 eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2506 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2507 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2508 p2p_flush(p2p);
2509 p2p_free_req_dev_types(p2p);
2510 os_free(p2p->cfg->dev_name);
2511 os_free(p2p->cfg->manufacturer);
2512 os_free(p2p->cfg->model_name);
2513 os_free(p2p->cfg->model_number);
2514 os_free(p2p->cfg->serial_number);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002515 os_free(p2p->cfg->pref_chan);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002516 os_free(p2p->groups);
2517 wpabuf_free(p2p->sd_resp);
2518 os_free(p2p->after_scan_tx);
2519 p2p_remove_wps_vendor_extensions(p2p);
2520 os_free(p2p);
2521}
2522
2523
2524void p2p_flush(struct p2p_data *p2p)
2525{
2526 struct p2p_device *dev, *prev;
Dmitry Shmidt04949592012-07-19 12:16:46 -07002527 p2p_stop_find(p2p);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002528 dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2529 list) {
2530 dl_list_del(&dev->list);
2531 p2p_device_free(p2p, dev);
2532 }
Irfan Sherifff44b9c42012-06-13 11:09:23 -07002533#ifdef ANDROID_P2P
2534 /* SD_FAIR_POLICY: Initializing the SD current serviced pointer to NULL */
2535 p2p->sd_dev_list = NULL;
2536#endif
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002537 p2p_free_sd_queries(p2p);
2538 os_free(p2p->after_scan_tx);
2539 p2p->after_scan_tx = NULL;
2540}
2541
2542
2543int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2544{
2545 struct p2p_device *dev;
2546
2547 dev = p2p_get_device(p2p, addr);
2548 if (dev == NULL)
2549 return -1;
2550
2551 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Unauthorizing " MACSTR,
2552 MAC2STR(addr));
2553
2554 if (p2p->go_neg_peer == dev)
2555 p2p->go_neg_peer = NULL;
2556
2557 dev->wps_method = WPS_NOT_READY;
2558 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2559 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2560
2561 /* Check if after_scan_tx is for this peer. If so free it */
2562 if (p2p->after_scan_tx &&
2563 os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2564 os_free(p2p->after_scan_tx);
2565 p2p->after_scan_tx = NULL;
2566 }
2567
2568 return 0;
2569}
2570
2571
2572int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2573{
2574 os_free(p2p->cfg->dev_name);
2575 if (dev_name) {
2576 p2p->cfg->dev_name = os_strdup(dev_name);
2577 if (p2p->cfg->dev_name == NULL)
2578 return -1;
2579 } else
2580 p2p->cfg->dev_name = NULL;
2581 return 0;
2582}
2583
2584
2585int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
2586{
2587 os_free(p2p->cfg->manufacturer);
2588 p2p->cfg->manufacturer = NULL;
2589 if (manufacturer) {
2590 p2p->cfg->manufacturer = os_strdup(manufacturer);
2591 if (p2p->cfg->manufacturer == NULL)
2592 return -1;
2593 }
2594
2595 return 0;
2596}
2597
2598
2599int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
2600{
2601 os_free(p2p->cfg->model_name);
2602 p2p->cfg->model_name = NULL;
2603 if (model_name) {
2604 p2p->cfg->model_name = os_strdup(model_name);
2605 if (p2p->cfg->model_name == NULL)
2606 return -1;
2607 }
2608
2609 return 0;
2610}
2611
2612
2613int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
2614{
2615 os_free(p2p->cfg->model_number);
2616 p2p->cfg->model_number = NULL;
2617 if (model_number) {
2618 p2p->cfg->model_number = os_strdup(model_number);
2619 if (p2p->cfg->model_number == NULL)
2620 return -1;
2621 }
2622
2623 return 0;
2624}
2625
2626
2627int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
2628{
2629 os_free(p2p->cfg->serial_number);
2630 p2p->cfg->serial_number = NULL;
2631 if (serial_number) {
2632 p2p->cfg->serial_number = os_strdup(serial_number);
2633 if (p2p->cfg->serial_number == NULL)
2634 return -1;
2635 }
2636
2637 return 0;
2638}
2639
2640
2641void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
2642{
2643 p2p->cfg->config_methods = config_methods;
2644}
2645
2646
2647void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
2648{
2649 os_memcpy(p2p->cfg->uuid, uuid, 16);
2650}
2651
2652
2653int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
2654{
2655 os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
2656 return 0;
2657}
2658
2659
2660int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
2661 size_t num_dev_types)
2662{
2663 if (num_dev_types > P2P_SEC_DEVICE_TYPES)
2664 num_dev_types = P2P_SEC_DEVICE_TYPES;
2665 p2p->cfg->num_sec_dev_types = num_dev_types;
2666 os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
2667 return 0;
2668}
2669
2670
2671void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
2672{
2673 int i;
2674
2675 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2676 wpabuf_free(p2p->wps_vendor_ext[i]);
2677 p2p->wps_vendor_ext[i] = NULL;
2678 }
2679}
2680
2681
2682int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2683 const struct wpabuf *vendor_ext)
2684{
2685 int i;
2686
2687 if (vendor_ext == NULL)
2688 return -1;
2689
2690 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2691 if (p2p->wps_vendor_ext[i] == NULL)
2692 break;
2693 }
2694 if (i >= P2P_MAX_WPS_VENDOR_EXT)
2695 return -1;
2696
2697 p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
2698 if (p2p->wps_vendor_ext[i] == NULL)
2699 return -1;
2700
2701 return 0;
2702}
2703
2704
2705int p2p_set_country(struct p2p_data *p2p, const char *country)
2706{
2707 os_memcpy(p2p->cfg->country, country, 3);
2708 return 0;
2709}
2710
2711
2712void p2p_continue_find(struct p2p_data *p2p)
2713{
2714 struct p2p_device *dev;
Irfan Sherifff44b9c42012-06-13 11:09:23 -07002715#ifdef ANDROID_P2P
2716 int skip=1;
2717#endif
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002718 p2p_set_state(p2p, P2P_SEARCH);
2719 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
Irfan Sherifff44b9c42012-06-13 11:09:23 -07002720#ifdef ANDROID_P2P
2721 /* SD_FAIR_POLICY: We need to give chance to all devices in the device list
2722 * There may be a scenario, where a particular peer device have
2723 * not registered any query response. When we send a SD request to such device,
2724 * no response will be received. And if we continue to get probe responses from that device,
2725 * and if that device happens to be on top in our device list,
2726 * we will always continue to send SD requests always to that peer only.
2727 * We will not be able to send SD requests to other devices in that case.
2728 * This implementation keeps track of last serviced peer device.
2729 * And then takes the next one from the device list, in the next iteration.
2730 */
2731 if (p2p->sd_dev_list && p2p->sd_dev_list != &p2p->devices) {
2732 if(skip) {
2733 if ((&dev->list == p2p->sd_dev_list) ) {
2734 skip = 0;
2735 if (dev->list.next == &p2p->devices)
2736 p2p->sd_dev_list = NULL;
2737 }
2738 continue;
2739 }
2740 }
2741 p2p->sd_dev_list = &dev->list;
2742 wpa_printf(MSG_DEBUG, "P2P: ### Servicing %p dev->flags 0x%x SD schedule %s devaddr " MACSTR,
2743 p2p->sd_dev_list, dev->flags, dev->flags & P2P_DEV_SD_SCHEDULE ? "TRUE": "FALSE",
2744 MAC2STR(dev->info.p2p_device_addr));
2745#endif
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002746 if (dev->flags & P2P_DEV_SD_SCHEDULE) {
2747 if (p2p_start_sd(p2p, dev) == 0)
2748 return;
2749 else
2750 break;
2751 } else if (dev->req_config_methods &&
2752 !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
2753 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send "
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002754 "pending Provision Discovery Request to "
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002755 MACSTR " (config methods 0x%x)",
2756 MAC2STR(dev->info.p2p_device_addr),
2757 dev->req_config_methods);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002758 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002759 return;
2760 }
2761 }
2762
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08002763 p2p_listen_in_find(p2p, 1);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002764}
2765
2766
2767static void p2p_sd_cb(struct p2p_data *p2p, int success)
2768{
2769 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2770 "P2P: Service Discovery Query TX callback: success=%d",
2771 success);
2772 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2773
2774 if (!success) {
2775 if (p2p->sd_peer) {
2776 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
2777 p2p->sd_peer = NULL;
2778 }
2779 p2p_continue_find(p2p);
2780 return;
2781 }
2782
2783 if (p2p->sd_peer == NULL) {
2784 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2785 "P2P: No SD peer entry known");
2786 p2p_continue_find(p2p);
2787 return;
2788 }
2789
2790 /* Wait for response from the peer */
2791 p2p_set_state(p2p, P2P_SD_DURING_FIND);
2792 p2p_set_timeout(p2p, 0, 200000);
2793}
2794
Jouni Malinen75ecf522011-06-27 15:19:46 -07002795
2796/**
2797 * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
2798 * @p2p: P2P module context from p2p_init()
2799 */
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002800static void p2p_retry_pd(struct p2p_data *p2p)
Jouni Malinen75ecf522011-06-27 15:19:46 -07002801{
2802 struct p2p_device *dev;
2803
2804 if (p2p->state != P2P_IDLE)
2805 return;
2806
2807 /*
2808 * Retry the prov disc req attempt only for the peer that the user had
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08002809 * requested.
Jouni Malinen75ecf522011-06-27 15:19:46 -07002810 */
2811
2812 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2813 if (os_memcmp(p2p->pending_pd_devaddr,
2814 dev->info.p2p_device_addr, ETH_ALEN) != 0)
2815 continue;
2816 if (!dev->req_config_methods)
2817 continue;
Jouni Malinen75ecf522011-06-27 15:19:46 -07002818
2819 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send "
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002820 "pending Provision Discovery Request to "
Jouni Malinen75ecf522011-06-27 15:19:46 -07002821 MACSTR " (config methods 0x%x)",
2822 MAC2STR(dev->info.p2p_device_addr),
2823 dev->req_config_methods);
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08002824 p2p_send_prov_disc_req(p2p, dev,
2825 dev->flags & P2P_DEV_PD_FOR_JOIN, 0);
Jouni Malinen75ecf522011-06-27 15:19:46 -07002826 return;
2827 }
2828}
2829
2830
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002831static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
2832{
2833 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2834 "P2P: Provision Discovery Request TX callback: success=%d",
2835 success);
Jouni Malinen75ecf522011-06-27 15:19:46 -07002836
2837 /*
2838 * Postpone resetting the pending action state till after we actually
2839 * time out. This allows us to take some action like notifying any
2840 * interested parties about no response to the request.
2841 *
2842 * When the timer (below) goes off we check in IDLE, SEARCH, or
2843 * LISTEN_ONLY state, which are the only allowed states to issue a PD
2844 * requests in, if this was still pending and then raise notification.
2845 */
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002846
2847 if (!success) {
Jouni Malinen75ecf522011-06-27 15:19:46 -07002848 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2849
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002850 if (p2p->user_initiated_pd &&
2851 (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
2852 {
2853 /* Retry request from timeout to avoid busy loops */
2854 p2p->pending_action_state = P2P_PENDING_PD;
2855 p2p_set_timeout(p2p, 0, 50000);
2856 } else if (p2p->state != P2P_IDLE)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002857 p2p_continue_find(p2p);
Jouni Malinen75ecf522011-06-27 15:19:46 -07002858 else if (p2p->user_initiated_pd) {
2859 p2p->pending_action_state = P2P_PENDING_PD;
Irfan Sheriff1a2ce112012-10-30 22:22:52 -07002860#ifdef ANDROID_P2P
2861 p2p_set_timeout(p2p, 0, 350000);
2862#else
Jouni Malinen75ecf522011-06-27 15:19:46 -07002863 p2p_set_timeout(p2p, 0, 300000);
Irfan Sheriff1a2ce112012-10-30 22:22:52 -07002864#endif
Jouni Malinen75ecf522011-06-27 15:19:46 -07002865 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002866 return;
2867 }
2868
Jouni Malinen75ecf522011-06-27 15:19:46 -07002869 /*
2870 * This postponing, of resetting pending_action_state, needs to be
2871 * done only for user initiated PD requests and not internal ones.
2872 */
2873 if (p2p->user_initiated_pd)
2874 p2p->pending_action_state = P2P_PENDING_PD;
2875 else
2876 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2877
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002878 /* Wait for response from the peer */
2879 if (p2p->state == P2P_SEARCH)
2880 p2p_set_state(p2p, P2P_PD_DURING_FIND);
Irfan Sheriff1a2ce112012-10-30 22:22:52 -07002881#ifdef ANDROID_P2P
2882 p2p_set_timeout(p2p, 0, 350000);
2883#else
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002884 p2p_set_timeout(p2p, 0, 200000);
Irfan Sheriff1a2ce112012-10-30 22:22:52 -07002885#endif
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002886}
2887
2888
2889int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08002890 unsigned int age, int level, const u8 *ies,
2891 size_t ies_len)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002892{
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08002893 p2p_add_device(p2p, bssid, freq, age, level, ies, ies_len, 1);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002894
2895 return 0;
2896}
2897
2898
2899void p2p_scan_res_handled(struct p2p_data *p2p)
2900{
2901 if (!p2p->p2p_scan_running) {
2902 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan was not "
2903 "running, but scan results received");
2904 }
2905 p2p->p2p_scan_running = 0;
2906 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2907
2908 if (p2p_run_after_scan(p2p))
2909 return;
2910 if (p2p->state == P2P_SEARCH)
2911 p2p_continue_find(p2p);
2912}
2913
2914
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08002915void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002916{
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002917 u8 *len;
2918
2919#ifdef CONFIG_WIFI_DISPLAY
2920 if (p2p->wfd_ie_probe_req)
2921 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
2922#endif /* CONFIG_WIFI_DISPLAY */
2923
2924 len = p2p_buf_add_ie_hdr(ies);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002925 p2p_buf_add_capability(ies, p2p->dev_capab &
2926 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08002927 if (dev_id)
2928 p2p_buf_add_device_id(ies, dev_id);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002929 if (p2p->cfg->reg_class && p2p->cfg->channel)
2930 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
2931 p2p->cfg->reg_class,
2932 p2p->cfg->channel);
2933 if (p2p->ext_listen_interval)
2934 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
2935 p2p->ext_listen_interval);
2936 /* TODO: p2p_buf_add_operating_channel() if GO */
2937 p2p_buf_update_ie_hdr(ies, len);
2938}
2939
2940
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002941size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
2942{
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002943 size_t len = 100;
2944
2945#ifdef CONFIG_WIFI_DISPLAY
2946 if (p2p && p2p->wfd_ie_probe_req)
2947 len += wpabuf_len(p2p->wfd_ie_probe_req);
2948#endif /* CONFIG_WIFI_DISPLAY */
2949
2950 return len;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002951}
2952
2953
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002954int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
2955{
2956 return p2p_attr_text(p2p_ie, buf, end);
2957}
2958
2959
2960static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
2961{
2962 struct p2p_device *dev = p2p->go_neg_peer;
2963
2964 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2965 "P2P: GO Negotiation Request TX callback: success=%d",
2966 success);
2967
2968 if (dev == NULL) {
2969 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2970 "P2P: No pending GO Negotiation");
2971 return;
2972 }
2973
2974 if (success) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002975 if (dev->flags & P2P_DEV_USER_REJECTED) {
2976 p2p_set_state(p2p, P2P_IDLE);
2977 return;
2978 }
Dmitry Shmidt04949592012-07-19 12:16:46 -07002979 } else if (dev->go_neg_req_sent) {
2980 /* Cancel the increment from p2p_connect_send() on failure */
Dmitry Shmidt98f9e762012-05-30 11:18:46 -07002981 dev->go_neg_req_sent--;
2982 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002983
2984 if (!success &&
2985 (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
2986 !is_zero_ether_addr(dev->member_in_go_dev)) {
2987 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2988 "P2P: Peer " MACSTR " did not acknowledge request - "
2989 "try to use device discoverability through its GO",
2990 MAC2STR(dev->info.p2p_device_addr));
2991 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2992 p2p_send_dev_disc_req(p2p, dev);
2993 return;
2994 }
2995
2996 /*
2997 * Use P2P find, if needed, to find the other device from its listen
2998 * channel.
2999 */
3000 p2p_set_state(p2p, P2P_CONNECT);
Irfan Sheriff1a2ce112012-10-30 22:22:52 -07003001#ifdef ANDROID_P2P
3002 p2p_set_timeout(p2p, 0, 350000);
3003#else
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07003004 p2p_set_timeout(p2p, 0, success ? 200000 : 100000);
Irfan Sheriff1a2ce112012-10-30 22:22:52 -07003005#endif
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003006}
3007
3008
3009static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
3010{
3011 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3012 "P2P: GO Negotiation Response TX callback: success=%d",
3013 success);
3014 if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
3015 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3016 "P2P: Ignore TX callback event - GO Negotiation is "
3017 "not running anymore");
3018 return;
3019 }
3020 p2p_set_state(p2p, P2P_CONNECT);
Irfan Sheriff1a2ce112012-10-30 22:22:52 -07003021#ifdef ANDROID_P2P
3022 p2p_set_timeout(p2p, 0, 350000);
3023#else
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07003024 p2p_set_timeout(p2p, 0, 250000);
Irfan Sheriff1a2ce112012-10-30 22:22:52 -07003025#endif
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003026}
3027
3028
3029static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success)
3030{
3031 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3032 "P2P: GO Negotiation Response (failure) TX callback: "
3033 "success=%d", success);
3034 if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
3035 p2p_go_neg_failed(p2p, p2p->go_neg_peer,
3036 p2p->go_neg_peer->status);
3037 }
3038}
3039
3040
3041static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
3042 enum p2p_send_action_result result)
3043{
3044 struct p2p_device *dev;
3045
3046 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3047 "P2P: GO Negotiation Confirm TX callback: result=%d",
3048 result);
3049 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3050 if (result == P2P_SEND_ACTION_FAILED) {
3051 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3052 return;
3053 }
3054 if (result == P2P_SEND_ACTION_NO_ACK) {
3055 /*
3056 * It looks like the TX status for GO Negotiation Confirm is
3057 * often showing failure even when the peer has actually
3058 * received the frame. Since the peer may change channels
3059 * immediately after having received the frame, we may not see
3060 * an Ack for retries, so just dropping a single frame may
3061 * trigger this. To allow the group formation to succeed if the
3062 * peer did indeed receive the frame, continue regardless of
3063 * the TX status.
3064 */
3065 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3066 "P2P: Assume GO Negotiation Confirm TX was actually "
3067 "received by the peer even though Ack was not "
3068 "reported");
3069 }
3070
3071 dev = p2p->go_neg_peer;
3072 if (dev == NULL)
3073 return;
3074
3075 p2p_go_complete(p2p, dev);
3076}
3077
3078
3079void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3080 const u8 *src, const u8 *bssid,
3081 enum p2p_send_action_result result)
3082{
3083 enum p2p_pending_action_state state;
3084 int success;
3085
3086 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3087 "P2P: Action frame TX callback (state=%d freq=%u dst=" MACSTR
3088 " src=" MACSTR " bssid=" MACSTR " result=%d",
3089 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
3090 MAC2STR(bssid), result);
3091 success = result == P2P_SEND_ACTION_SUCCESS;
3092 state = p2p->pending_action_state;
3093 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3094 switch (state) {
3095 case P2P_NO_PENDING_ACTION:
3096 break;
3097 case P2P_PENDING_GO_NEG_REQUEST:
3098 p2p_go_neg_req_cb(p2p, success);
3099 break;
3100 case P2P_PENDING_GO_NEG_RESPONSE:
3101 p2p_go_neg_resp_cb(p2p, success);
3102 break;
3103 case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
3104 p2p_go_neg_resp_failure_cb(p2p, success);
3105 break;
3106 case P2P_PENDING_GO_NEG_CONFIRM:
3107 p2p_go_neg_conf_cb(p2p, result);
3108 break;
3109 case P2P_PENDING_SD:
3110 p2p_sd_cb(p2p, success);
3111 break;
3112 case P2P_PENDING_PD:
3113 p2p_prov_disc_cb(p2p, success);
3114 break;
3115 case P2P_PENDING_INVITATION_REQUEST:
3116 p2p_invitation_req_cb(p2p, success);
3117 break;
3118 case P2P_PENDING_INVITATION_RESPONSE:
3119 p2p_invitation_resp_cb(p2p, success);
3120 break;
3121 case P2P_PENDING_DEV_DISC_REQUEST:
3122 p2p_dev_disc_req_cb(p2p, success);
3123 break;
3124 case P2P_PENDING_DEV_DISC_RESPONSE:
3125 p2p_dev_disc_resp_cb(p2p, success);
3126 break;
3127 case P2P_PENDING_GO_DISC_REQ:
3128 p2p_go_disc_req_cb(p2p, success);
3129 break;
3130 }
3131}
3132
3133
3134void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3135 unsigned int duration)
3136{
3137 if (freq == p2p->pending_client_disc_freq) {
3138 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3139 "P2P: Client discoverability remain-awake completed");
3140 p2p->pending_client_disc_freq = 0;
3141 return;
3142 }
3143
3144 if (freq != p2p->pending_listen_freq) {
3145 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3146 "P2P: Unexpected listen callback for freq=%u "
3147 "duration=%u (pending_listen_freq=%u)",
3148 freq, duration, p2p->pending_listen_freq);
3149 return;
3150 }
3151
3152 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3153 "P2P: Starting Listen timeout(%u,%u) on freq=%u based on "
3154 "callback",
3155 p2p->pending_listen_sec, p2p->pending_listen_usec,
3156 p2p->pending_listen_freq);
3157 p2p->in_listen = 1;
3158 p2p->drv_in_listen = freq;
3159 if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3160 /*
3161 * Add 20 msec extra wait to avoid race condition with driver
3162 * remain-on-channel end event, i.e., give driver more time to
3163 * complete the operation before our timeout expires.
3164 */
3165 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3166 p2p->pending_listen_usec + 20000);
3167 }
3168
3169 p2p->pending_listen_freq = 0;
3170}
3171
3172
3173int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3174{
3175 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver ended Listen "
3176 "state (freq=%u)", freq);
3177 p2p->drv_in_listen = 0;
3178 if (p2p->in_listen)
3179 return 0; /* Internal timeout will trigger the next step */
3180
3181 if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3182 if (p2p->go_neg_peer->connect_reqs >= 120) {
3183 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3184 "P2P: Timeout on sending GO Negotiation "
3185 "Request without getting response");
3186 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3187 return 0;
3188 }
3189
3190 p2p_set_state(p2p, P2P_CONNECT);
3191 p2p_connect_send(p2p, p2p->go_neg_peer);
3192 return 1;
3193 } else if (p2p->state == P2P_SEARCH) {
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08003194 if (p2p->p2p_scan_running) {
3195 /*
3196 * Search is already in progress. This can happen if
3197 * an Action frame RX is reported immediately after
3198 * the end of a remain-on-channel operation and the
3199 * response frame to that is sent using an offchannel
3200 * operation while in p2p_find. Avoid an attempt to
3201 * restart a scan here.
3202 */
3203 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan "
3204 "already in progress - do not try to start a "
3205 "new one");
3206 return 1;
3207 }
Dmitry Shmidt04949592012-07-19 12:16:46 -07003208 if (p2p->pending_listen_freq) {
3209 /*
3210 * Better wait a bit if the driver is unable to start
3211 * offchannel operation for some reason. p2p_search()
3212 * will be started from internal timeout.
3213 */
3214 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Listen "
3215 "operation did not seem to start - delay "
3216 "search phase to avoid busy loop");
3217 p2p_set_timeout(p2p, 0, 100000);
3218 return 1;
3219 }
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07003220 if (p2p->search_delay) {
3221 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay "
3222 "search operation by %u ms",
3223 p2p->search_delay);
3224 p2p_set_timeout(p2p, p2p->search_delay / 1000,
3225 (p2p->search_delay % 1000) * 1000);
3226 return 1;
3227 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003228 p2p_search(p2p);
3229 return 1;
3230 }
3231
3232 return 0;
3233}
3234
3235
3236static void p2p_timeout_connect(struct p2p_data *p2p)
3237{
3238 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
Dmitry Shmidt04949592012-07-19 12:16:46 -07003239 if (p2p->go_neg_peer &&
3240 (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3241 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Wait for GO "
3242 "Negotiation Confirm timed out - assume GO "
3243 "Negotiation failed");
3244 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3245 return;
3246 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003247 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08003248 p2p_listen_in_find(p2p, 0);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003249}
3250
3251
3252static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3253{
3254 if (p2p->go_neg_peer) {
3255 if (p2p->drv_in_listen) {
3256 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is "
3257 "still in Listen state; wait for it to "
3258 "complete");
3259 return;
3260 }
3261
3262 if (p2p->go_neg_peer->connect_reqs >= 120) {
3263 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3264 "P2P: Timeout on sending GO Negotiation "
3265 "Request without getting response");
3266 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3267 return;
3268 }
3269
3270 p2p_set_state(p2p, P2P_CONNECT);
3271 p2p_connect_send(p2p, p2p->go_neg_peer);
3272 } else
3273 p2p_set_state(p2p, P2P_IDLE);
3274}
3275
3276
3277static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3278{
3279 /*
3280 * TODO: could remain constantly in Listen state for some time if there
3281 * are no other concurrent uses for the radio. For now, go to listen
3282 * state once per second to give other uses a chance to use the radio.
3283 */
3284 p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003285 p2p_set_timeout(p2p, 0, 500000);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003286}
3287
3288
3289static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3290{
3291 struct p2p_device *dev = p2p->go_neg_peer;
3292
3293 if (dev == NULL) {
3294 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3295 "P2P: Unknown GO Neg peer - stop GO Neg wait");
3296 return;
3297 }
3298
3299 dev->wait_count++;
3300 if (dev->wait_count >= 120) {
3301 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3302 "P2P: Timeout on waiting peer to become ready for GO "
3303 "Negotiation");
3304 p2p_go_neg_failed(p2p, dev, -1);
3305 return;
3306 }
3307
3308 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3309 "P2P: Go to Listen state while waiting for the peer to become "
3310 "ready for GO Negotiation");
3311 p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08003312 p2p_listen_in_find(p2p, 0);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003313}
3314
3315
3316static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3317{
3318 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3319 "P2P: Service Discovery Query timeout");
3320 if (p2p->sd_peer) {
3321 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3322 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
3323 p2p->sd_peer = NULL;
3324 }
3325 p2p_continue_find(p2p);
3326}
3327
3328
3329static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3330{
3331 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3332 "P2P: Provision Discovery Request timeout");
3333 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3334 p2p_continue_find(p2p);
3335}
3336
3337
Jouni Malinen75ecf522011-06-27 15:19:46 -07003338static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3339{
3340 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3341
3342 /*
3343 * For user initiated PD requests that we have not gotten any responses
3344 * for while in IDLE state, we retry them a couple of times before
3345 * giving up.
3346 */
3347 if (!p2p->user_initiated_pd)
3348 return;
3349
3350 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3351 "P2P: User initiated Provision Discovery Request timeout");
3352
3353 if (p2p->pd_retries) {
3354 p2p->pd_retries--;
3355 p2p_retry_pd(p2p);
3356 } else {
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08003357 struct p2p_device *dev;
3358 int for_join = 0;
3359
3360 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3361 if (os_memcmp(p2p->pending_pd_devaddr,
3362 dev->info.p2p_device_addr, ETH_ALEN) != 0)
3363 continue;
3364 if (dev->req_config_methods &&
3365 (dev->flags & P2P_DEV_PD_FOR_JOIN))
3366 for_join = 1;
3367 }
3368
Jouni Malinen75ecf522011-06-27 15:19:46 -07003369 if (p2p->cfg->prov_disc_fail)
3370 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
3371 p2p->pending_pd_devaddr,
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08003372 for_join ?
3373 P2P_PROV_DISC_TIMEOUT_JOIN :
Jouni Malinen75ecf522011-06-27 15:19:46 -07003374 P2P_PROV_DISC_TIMEOUT);
3375 p2p_reset_pending_pd(p2p);
3376 }
3377}
3378
3379
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003380static void p2p_timeout_invite(struct p2p_data *p2p)
3381{
3382 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3383 p2p_set_state(p2p, P2P_INVITE_LISTEN);
3384 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
3385 /*
3386 * Better remain on operating channel instead of listen channel
3387 * when running a group.
3388 */
3389 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Inviting in "
3390 "active GO role - wait on operating channel");
3391 p2p_set_timeout(p2p, 0, 100000);
3392 return;
3393 }
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08003394 p2p_listen_in_find(p2p, 0);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003395}
3396
3397
3398static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3399{
3400 if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3401 p2p_set_state(p2p, P2P_INVITE);
3402 p2p_invite_send(p2p, p2p->invite_peer,
3403 p2p->invite_go_dev_addr);
3404 } else {
3405 if (p2p->invite_peer) {
3406 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3407 "P2P: Invitation Request retry limit reached");
3408 if (p2p->cfg->invitation_result)
3409 p2p->cfg->invitation_result(
3410 p2p->cfg->cb_ctx, -1, NULL);
3411 }
3412 p2p_set_state(p2p, P2P_IDLE);
3413 }
3414}
3415
3416
3417static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3418{
3419 struct p2p_data *p2p = eloop_ctx;
3420
3421 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Timeout (state=%s)",
3422 p2p_state_txt(p2p->state));
3423
3424 p2p->in_listen = 0;
3425
3426 switch (p2p->state) {
3427 case P2P_IDLE:
Jouni Malinen75ecf522011-06-27 15:19:46 -07003428 /* Check if we timed out waiting for PD req */
3429 if (p2p->pending_action_state == P2P_PENDING_PD)
3430 p2p_timeout_prov_disc_req(p2p);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003431 break;
3432 case P2P_SEARCH:
Jouni Malinen75ecf522011-06-27 15:19:46 -07003433 /* Check if we timed out waiting for PD req */
3434 if (p2p->pending_action_state == P2P_PENDING_PD)
3435 p2p_timeout_prov_disc_req(p2p);
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07003436 if (p2p->search_delay && !p2p->in_search_delay) {
3437 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay "
3438 "search operation by %u ms",
3439 p2p->search_delay);
3440 p2p->in_search_delay = 1;
3441 p2p_set_timeout(p2p, p2p->search_delay / 1000,
3442 (p2p->search_delay % 1000) * 1000);
3443 break;
3444 }
3445 p2p->in_search_delay = 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003446 p2p_search(p2p);
3447 break;
3448 case P2P_CONNECT:
3449 p2p_timeout_connect(p2p);
3450 break;
3451 case P2P_CONNECT_LISTEN:
3452 p2p_timeout_connect_listen(p2p);
3453 break;
3454 case P2P_GO_NEG:
3455 break;
3456 case P2P_LISTEN_ONLY:
Jouni Malinen75ecf522011-06-27 15:19:46 -07003457 /* Check if we timed out waiting for PD req */
3458 if (p2p->pending_action_state == P2P_PENDING_PD)
3459 p2p_timeout_prov_disc_req(p2p);
3460
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003461 if (p2p->ext_listen_only) {
3462 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3463 "P2P: Extended Listen Timing - Listen State "
3464 "completed");
3465 p2p->ext_listen_only = 0;
3466 p2p_set_state(p2p, P2P_IDLE);
3467 }
3468 break;
3469 case P2P_WAIT_PEER_CONNECT:
3470 p2p_timeout_wait_peer_connect(p2p);
3471 break;
3472 case P2P_WAIT_PEER_IDLE:
3473 p2p_timeout_wait_peer_idle(p2p);
3474 break;
3475 case P2P_SD_DURING_FIND:
3476 p2p_timeout_sd_during_find(p2p);
3477 break;
3478 case P2P_PROVISIONING:
3479 break;
3480 case P2P_PD_DURING_FIND:
3481 p2p_timeout_prov_disc_during_find(p2p);
3482 break;
3483 case P2P_INVITE:
3484 p2p_timeout_invite(p2p);
3485 break;
3486 case P2P_INVITE_LISTEN:
3487 p2p_timeout_invite_listen(p2p);
3488 break;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003489 case P2P_SEARCH_WHEN_READY:
3490 break;
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07003491 case P2P_CONTINUE_SEARCH_WHEN_READY:
3492 break;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003493 }
3494}
3495
3496
3497int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
3498{
3499 struct p2p_device *dev;
3500
3501 dev = p2p_get_device(p2p, peer_addr);
3502 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Local request to reject "
3503 "connection attempts by peer " MACSTR, MAC2STR(peer_addr));
3504 if (dev == NULL) {
3505 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer " MACSTR
3506 " unknown", MAC2STR(peer_addr));
3507 return -1;
3508 }
3509 dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
3510 dev->flags |= P2P_DEV_USER_REJECTED;
3511 return 0;
3512}
3513
3514
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003515const char * p2p_wps_method_text(enum p2p_wps_method method)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003516{
3517 switch (method) {
3518 case WPS_NOT_READY:
3519 return "not-ready";
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003520 case WPS_PIN_DISPLAY:
3521 return "Display";
3522 case WPS_PIN_KEYPAD:
3523 return "Keypad";
3524 case WPS_PBC:
3525 return "PBC";
3526 }
3527
3528 return "??";
3529}
3530
3531
3532static const char * p2p_go_state_text(enum p2p_go_state go_state)
3533{
3534 switch (go_state) {
3535 case UNKNOWN_GO:
3536 return "unknown";
3537 case LOCAL_GO:
3538 return "local";
3539 case REMOTE_GO:
3540 return "remote";
3541 }
3542
3543 return "??";
3544}
3545
3546
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003547const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
3548 const u8 *addr, int next)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003549{
3550 struct p2p_device *dev;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003551
3552 if (addr)
3553 dev = p2p_get_device(p2p, addr);
3554 else
3555 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3556
3557 if (dev && next) {
3558 dev = dl_list_first(&dev->list, struct p2p_device, list);
3559 if (&dev->list == &p2p->devices)
3560 dev = NULL;
3561 }
3562
3563 if (dev == NULL)
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003564 return NULL;
3565
3566 return &dev->info;
3567}
3568
3569
3570int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
3571 char *buf, size_t buflen)
3572{
3573 struct p2p_device *dev;
3574 int res;
3575 char *pos, *end;
3576 struct os_time now;
3577
3578 if (info == NULL)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003579 return -1;
3580
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003581 dev = (struct p2p_device *) (((u8 *) info) -
3582 offsetof(struct p2p_device, info));
3583
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003584 pos = buf;
3585 end = buf + buflen;
3586
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003587 os_get_time(&now);
3588 res = os_snprintf(pos, end - pos,
3589 "age=%d\n"
3590 "listen_freq=%d\n"
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003591 "wps_method=%s\n"
3592 "interface_addr=" MACSTR "\n"
3593 "member_in_go_dev=" MACSTR "\n"
3594 "member_in_go_iface=" MACSTR "\n"
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003595 "go_neg_req_sent=%d\n"
3596 "go_state=%s\n"
3597 "dialog_token=%u\n"
3598 "intended_addr=" MACSTR "\n"
3599 "country=%c%c\n"
3600 "oper_freq=%d\n"
3601 "req_config_methods=0x%x\n"
3602 "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
3603 "status=%d\n"
3604 "wait_count=%u\n"
3605 "invitation_reqs=%u\n",
3606 (int) (now.sec - dev->last_seen.sec),
3607 dev->listen_freq,
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003608 p2p_wps_method_text(dev->wps_method),
3609 MAC2STR(dev->interface_addr),
3610 MAC2STR(dev->member_in_go_dev),
3611 MAC2STR(dev->member_in_go_iface),
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003612 dev->go_neg_req_sent,
3613 p2p_go_state_text(dev->go_state),
3614 dev->dialog_token,
3615 MAC2STR(dev->intended_addr),
3616 dev->country[0] ? dev->country[0] : '_',
3617 dev->country[1] ? dev->country[1] : '_',
3618 dev->oper_freq,
3619 dev->req_config_methods,
3620 dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
3621 "[PROBE_REQ_ONLY]" : "",
3622 dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
3623 dev->flags & P2P_DEV_NOT_YET_READY ?
3624 "[NOT_YET_READY]" : "",
3625 dev->flags & P2P_DEV_SD_INFO ? "[SD_INFO]" : "",
3626 dev->flags & P2P_DEV_SD_SCHEDULE ? "[SD_SCHEDULE]" :
3627 "",
3628 dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
3629 "[PD_PEER_DISPLAY]" : "",
3630 dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
3631 "[PD_PEER_KEYPAD]" : "",
3632 dev->flags & P2P_DEV_USER_REJECTED ?
3633 "[USER_REJECTED]" : "",
3634 dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
3635 "[PEER_WAITING_RESPONSE]" : "",
3636 dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
3637 "[PREFER_PERSISTENT_GROUP]" : "",
3638 dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
3639 "[WAIT_GO_NEG_RESPONSE]" : "",
3640 dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
3641 "[WAIT_GO_NEG_CONFIRM]" : "",
3642 dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
3643 "[GROUP_CLIENT_ONLY]" : "",
3644 dev->flags & P2P_DEV_FORCE_FREQ ?
3645 "[FORCE_FREQ]" : "",
3646 dev->flags & P2P_DEV_PD_FOR_JOIN ?
3647 "[PD_FOR_JOIN]" : "",
3648 dev->status,
3649 dev->wait_count,
3650 dev->invitation_reqs);
3651 if (res < 0 || res >= end - pos)
3652 return pos - buf;
3653 pos += res;
3654
3655 if (dev->ext_listen_period) {
3656 res = os_snprintf(pos, end - pos,
3657 "ext_listen_period=%u\n"
3658 "ext_listen_interval=%u\n",
3659 dev->ext_listen_period,
3660 dev->ext_listen_interval);
3661 if (res < 0 || res >= end - pos)
3662 return pos - buf;
3663 pos += res;
3664 }
3665
3666 if (dev->oper_ssid_len) {
3667 res = os_snprintf(pos, end - pos,
3668 "oper_ssid=%s\n",
3669 wpa_ssid_txt(dev->oper_ssid,
3670 dev->oper_ssid_len));
3671 if (res < 0 || res >= end - pos)
3672 return pos - buf;
3673 pos += res;
3674 }
3675
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07003676#ifdef CONFIG_WIFI_DISPLAY
3677 if (dev->info.wfd_subelems) {
3678 res = os_snprintf(pos, end - pos, "wfd_subelems=");
3679 if (res < 0 || res >= end - pos)
3680 return pos - buf;
3681 pos += res;
3682
3683 pos += wpa_snprintf_hex(pos, end - pos,
3684 wpabuf_head(dev->info.wfd_subelems),
3685 wpabuf_len(dev->info.wfd_subelems));
3686
3687 res = os_snprintf(pos, end - pos, "\n");
3688 if (res < 0 || res >= end - pos)
3689 return pos - buf;
3690 pos += res;
3691 }
3692#endif /* CONFIG_WIFI_DISPLAY */
3693
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003694 return pos - buf;
3695}
3696
3697
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003698int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
3699{
3700 return p2p_get_device(p2p, addr) != NULL;
3701}
3702
3703
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003704void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
3705{
3706 if (enabled) {
3707 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client "
3708 "discoverability enabled");
3709 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3710 } else {
3711 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client "
3712 "discoverability disabled");
3713 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3714 }
3715}
3716
3717
3718static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
3719 u32 duration2, u32 interval2)
3720{
3721 struct wpabuf *req;
3722 struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
3723 u8 *len;
3724
3725 req = wpabuf_alloc(100);
3726 if (req == NULL)
3727 return NULL;
3728
3729 if (duration1 || interval1) {
3730 os_memset(&desc1, 0, sizeof(desc1));
3731 desc1.count_type = 1;
3732 desc1.duration = duration1;
3733 desc1.interval = interval1;
3734 ptr1 = &desc1;
3735
3736 if (duration2 || interval2) {
3737 os_memset(&desc2, 0, sizeof(desc2));
3738 desc2.count_type = 2;
3739 desc2.duration = duration2;
3740 desc2.interval = interval2;
3741 ptr2 = &desc2;
3742 }
3743 }
3744
3745 p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
3746 len = p2p_buf_add_ie_hdr(req);
3747 p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
3748 p2p_buf_update_ie_hdr(req, len);
3749
3750 return req;
3751}
3752
3753
3754int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
3755 const u8 *own_interface_addr, unsigned int freq,
3756 u32 duration1, u32 interval1, u32 duration2,
3757 u32 interval2)
3758{
3759 struct wpabuf *req;
3760
3761 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send Presence Request to "
3762 "GO " MACSTR " (own interface " MACSTR ") freq=%u dur1=%u "
3763 "int1=%u dur2=%u int2=%u",
3764 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
3765 freq, duration1, interval1, duration2, interval2);
3766
3767 req = p2p_build_presence_req(duration1, interval1, duration2,
3768 interval2);
3769 if (req == NULL)
3770 return -1;
3771
3772 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3773 if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
3774 go_interface_addr,
3775 wpabuf_head(req), wpabuf_len(req), 200) < 0) {
3776 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3777 "P2P: Failed to send Action frame");
3778 }
3779 wpabuf_free(req);
3780
3781 return 0;
3782}
3783
3784
3785static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
3786 size_t noa_len, u8 dialog_token)
3787{
3788 struct wpabuf *resp;
3789 u8 *len;
3790
3791 resp = wpabuf_alloc(100 + noa_len);
3792 if (resp == NULL)
3793 return NULL;
3794
3795 p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
3796 len = p2p_buf_add_ie_hdr(resp);
3797 p2p_buf_add_status(resp, status);
3798 if (noa) {
3799 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
3800 wpabuf_put_le16(resp, noa_len);
3801 wpabuf_put_data(resp, noa, noa_len);
3802 } else
3803 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
3804 p2p_buf_update_ie_hdr(resp, len);
3805
3806 return resp;
3807}
3808
3809
3810static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
3811 const u8 *sa, const u8 *data, size_t len,
3812 int rx_freq)
3813{
3814 struct p2p_message msg;
3815 u8 status;
3816 struct wpabuf *resp;
3817 size_t g;
3818 struct p2p_group *group = NULL;
3819 int parsed = 0;
3820 u8 noa[50];
3821 int noa_len;
3822
3823 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3824 "P2P: Received P2P Action - P2P Presence Request");
3825
3826 for (g = 0; g < p2p->num_groups; g++) {
3827 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
3828 ETH_ALEN) == 0) {
3829 group = p2p->groups[g];
3830 break;
3831 }
3832 }
3833 if (group == NULL) {
3834 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3835 "P2P: Ignore P2P Presence Request for unknown group "
3836 MACSTR, MAC2STR(da));
3837 return;
3838 }
3839
3840 if (p2p_parse(data, len, &msg) < 0) {
3841 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3842 "P2P: Failed to parse P2P Presence Request");
3843 status = P2P_SC_FAIL_INVALID_PARAMS;
3844 goto fail;
3845 }
3846 parsed = 1;
3847
3848 if (msg.noa == NULL) {
3849 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3850 "P2P: No NoA attribute in P2P Presence Request");
3851 status = P2P_SC_FAIL_INVALID_PARAMS;
3852 goto fail;
3853 }
3854
3855 status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
3856
3857fail:
3858 if (p2p->cfg->get_noa)
3859 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
3860 sizeof(noa));
3861 else
3862 noa_len = -1;
3863 resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
3864 noa_len > 0 ? noa_len : 0,
3865 msg.dialog_token);
3866 if (parsed)
3867 p2p_parse_free(&msg);
3868 if (resp == NULL)
3869 return;
3870
3871 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3872 if (p2p_send_action(p2p, rx_freq, sa, da, da,
3873 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
3874 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3875 "P2P: Failed to send Action frame");
3876 }
3877 wpabuf_free(resp);
3878}
3879
3880
3881static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
3882 const u8 *sa, const u8 *data, size_t len)
3883{
3884 struct p2p_message msg;
3885
3886 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3887 "P2P: Received P2P Action - P2P Presence Response");
3888
3889 if (p2p_parse(data, len, &msg) < 0) {
3890 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3891 "P2P: Failed to parse P2P Presence Response");
3892 return;
3893 }
3894
3895 if (msg.status == NULL || msg.noa == NULL) {
3896 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3897 "P2P: No Status or NoA attribute in P2P Presence "
3898 "Response");
3899 p2p_parse_free(&msg);
3900 return;
3901 }
3902
3903 if (*msg.status) {
3904 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3905 "P2P: P2P Presence Request was rejected: status %u",
3906 *msg.status);
3907 p2p_parse_free(&msg);
3908 return;
3909 }
3910
3911 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3912 "P2P: P2P Presence Request was accepted");
3913 wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
3914 msg.noa, msg.noa_len);
3915 /* TODO: process NoA */
3916 p2p_parse_free(&msg);
3917}
3918
3919
3920static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
3921{
3922 struct p2p_data *p2p = eloop_ctx;
3923
3924 if (p2p->ext_listen_interval) {
3925 /* Schedule next extended listen timeout */
3926 eloop_register_timeout(p2p->ext_listen_interval_sec,
3927 p2p->ext_listen_interval_usec,
3928 p2p_ext_listen_timeout, p2p, NULL);
3929 }
3930
3931 if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
3932 /*
3933 * This should not really happen, but it looks like the Listen
3934 * command may fail is something else (e.g., a scan) was
3935 * running at an inconvenient time. As a workaround, allow new
3936 * Extended Listen operation to be started.
3937 */
3938 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Previous "
3939 "Extended Listen operation had not been completed - "
3940 "try again");
3941 p2p->ext_listen_only = 0;
3942 p2p_set_state(p2p, P2P_IDLE);
3943 }
3944
3945 if (p2p->state != P2P_IDLE) {
3946 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip Extended "
3947 "Listen timeout in active state (%s)",
3948 p2p_state_txt(p2p->state));
3949 return;
3950 }
3951
3952 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Extended Listen timeout");
3953 p2p->ext_listen_only = 1;
3954 if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
3955 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start "
3956 "Listen state for Extended Listen Timing");
3957 p2p->ext_listen_only = 0;
3958 }
3959}
3960
3961
3962int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
3963 unsigned int interval)
3964{
3965 if (period > 65535 || interval > 65535 || period > interval ||
3966 (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
3967 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3968 "P2P: Invalid Extended Listen Timing request: "
3969 "period=%u interval=%u", period, interval);
3970 return -1;
3971 }
3972
3973 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
3974
3975 if (interval == 0) {
3976 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3977 "P2P: Disabling Extended Listen Timing");
3978 p2p->ext_listen_period = 0;
3979 p2p->ext_listen_interval = 0;
3980 return 0;
3981 }
3982
3983 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3984 "P2P: Enabling Extended Listen Timing: period %u msec, "
3985 "interval %u msec", period, interval);
3986 p2p->ext_listen_period = period;
3987 p2p->ext_listen_interval = interval;
3988 p2p->ext_listen_interval_sec = interval / 1000;
3989 p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
3990
3991 eloop_register_timeout(p2p->ext_listen_interval_sec,
3992 p2p->ext_listen_interval_usec,
3993 p2p_ext_listen_timeout, p2p, NULL);
3994
3995 return 0;
3996}
3997
3998
3999void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4000 const u8 *ie, size_t ie_len)
4001{
4002 struct p2p_message msg;
4003
4004 if (bssid == NULL || ie == NULL)
4005 return;
4006
4007 os_memset(&msg, 0, sizeof(msg));
4008 if (p2p_parse_ies(ie, ie_len, &msg))
4009 return;
4010 if (msg.minor_reason_code == NULL)
4011 return;
4012
4013 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO,
4014 "P2P: Deauthentication notification BSSID " MACSTR
4015 " reason_code=%u minor_reason_code=%u",
4016 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4017
4018 p2p_parse_free(&msg);
4019}
4020
4021
4022void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4023 const u8 *ie, size_t ie_len)
4024{
4025 struct p2p_message msg;
4026
4027 if (bssid == NULL || ie == NULL)
4028 return;
4029
4030 os_memset(&msg, 0, sizeof(msg));
4031 if (p2p_parse_ies(ie, ie_len, &msg))
4032 return;
4033 if (msg.minor_reason_code == NULL)
4034 return;
4035
4036 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO,
4037 "P2P: Disassociation notification BSSID " MACSTR
4038 " reason_code=%u minor_reason_code=%u",
4039 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4040
4041 p2p_parse_free(&msg);
4042}
4043
4044
4045void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
4046{
4047 if (enabled) {
4048 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P "
4049 "Device operations enabled");
4050 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
4051 } else {
4052 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P "
4053 "Device operations disabled");
4054 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
4055 }
4056}
4057
4058
4059int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel)
4060{
4061 if (p2p_channel_to_freq(p2p->cfg->country, reg_class, channel) < 0)
4062 return -1;
4063
4064 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Set Listen channel: "
4065 "reg_class %u channel %u", reg_class, channel);
4066 p2p->cfg->reg_class = reg_class;
4067 p2p->cfg->channel = channel;
4068
4069 return 0;
4070}
4071
4072
4073int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
4074{
4075 wpa_hexdump_ascii(MSG_DEBUG, "P2P: New SSID postfix", postfix, len);
4076 if (postfix == NULL) {
4077 p2p->cfg->ssid_postfix_len = 0;
4078 return 0;
4079 }
4080 if (len > sizeof(p2p->cfg->ssid_postfix))
4081 return -1;
4082 os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
4083 p2p->cfg->ssid_postfix_len = len;
4084 return 0;
4085}
4086
4087
Jouni Malinen75ecf522011-06-27 15:19:46 -07004088int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
4089 int cfg_op_channel)
4090{
4091 if (p2p_channel_to_freq(p2p->cfg->country, op_reg_class, op_channel)
4092 < 0)
4093 return -1;
4094
4095 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, "P2P: Set Operating channel: "
4096 "reg_class %u channel %u", op_reg_class, op_channel);
4097 p2p->cfg->op_reg_class = op_reg_class;
4098 p2p->cfg->op_channel = op_channel;
4099 p2p->cfg->cfg_op_channel = cfg_op_channel;
4100 return 0;
4101}
4102
4103
Dmitry Shmidt04949592012-07-19 12:16:46 -07004104int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
4105 const struct p2p_channel *pref_chan)
4106{
4107 struct p2p_channel *n;
4108
4109 if (pref_chan) {
4110 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
4111 if (n == NULL)
4112 return -1;
4113 os_memcpy(n, pref_chan,
4114 num_pref_chan * sizeof(struct p2p_channel));
4115 } else
4116 n = NULL;
4117
4118 os_free(p2p->cfg->pref_chan);
4119 p2p->cfg->pref_chan = n;
4120 p2p->cfg->num_pref_chan = num_pref_chan;
4121
4122 return 0;
4123}
4124
4125
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004126int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4127 u8 *iface_addr)
4128{
4129 struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4130 if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4131 return -1;
4132 os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4133 return 0;
4134}
4135
4136
4137int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4138 u8 *dev_addr)
4139{
4140 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4141 if (dev == NULL)
4142 return -1;
4143 os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4144 return 0;
4145}
4146
4147
4148void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4149{
4150 os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4151 if (is_zero_ether_addr(p2p->peer_filter))
4152 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Disable peer "
4153 "filter");
4154 else
4155 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Enable peer "
4156 "filter for " MACSTR, MAC2STR(p2p->peer_filter));
4157}
4158
4159
4160void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4161{
4162 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Cross connection %s",
4163 enabled ? "enabled" : "disabled");
4164 if (p2p->cross_connect == enabled)
4165 return;
4166 p2p->cross_connect = enabled;
4167 /* TODO: may need to tear down any action group where we are GO(?) */
4168}
4169
4170
4171int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4172{
4173 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4174 if (dev == NULL)
4175 return -1;
4176 if (dev->oper_freq <= 0)
4177 return -1;
4178 return dev->oper_freq;
4179}
4180
4181
4182void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4183{
4184 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Intra BSS distribution %s",
4185 enabled ? "enabled" : "disabled");
4186 p2p->cfg->p2p_intra_bss = enabled;
4187}
4188
4189
4190void p2p_update_channel_list(struct p2p_data *p2p, struct p2p_channels *chan)
4191{
4192 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update channel list");
4193 os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4194}
4195
4196
4197int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4198 const u8 *src, const u8 *bssid, const u8 *buf,
4199 size_t len, unsigned int wait_time)
4200{
4201 if (p2p->p2p_scan_running) {
4202 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay Action "
4203 "frame TX until p2p_scan completes");
4204 if (p2p->after_scan_tx) {
4205 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped "
4206 "previous pending Action frame TX");
4207 os_free(p2p->after_scan_tx);
4208 }
4209 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4210 len);
4211 if (p2p->after_scan_tx == NULL)
4212 return -1;
4213 p2p->after_scan_tx->freq = freq;
4214 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4215 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4216 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4217 p2p->after_scan_tx->len = len;
4218 p2p->after_scan_tx->wait_time = wait_time;
4219 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4220 return 0;
4221 }
4222
4223 return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4224 buf, len, wait_time);
4225}
4226
4227
4228void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4229 int freq_overall)
4230{
4231 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Best channel: 2.4 GHz: %d,"
4232 " 5 GHz: %d, overall: %d", freq_24, freq_5, freq_overall);
4233 p2p->best_freq_24 = freq_24;
4234 p2p->best_freq_5 = freq_5;
4235 p2p->best_freq_overall = freq_overall;
4236}
4237
4238
4239const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4240{
4241 if (p2p == NULL || p2p->go_neg_peer == NULL)
4242 return NULL;
4243 return p2p->go_neg_peer->info.p2p_device_addr;
4244}
4245
4246
4247const struct p2p_peer_info *
4248p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4249{
4250 struct p2p_device *dev;
4251
4252 if (addr) {
4253 dev = p2p_get_device(p2p, addr);
4254 if (!dev)
4255 return NULL;
4256
4257 if (!next) {
4258 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4259 return NULL;
4260
4261 return &dev->info;
4262 } else {
4263 do {
4264 dev = dl_list_first(&dev->list,
4265 struct p2p_device,
4266 list);
4267 if (&dev->list == &p2p->devices)
4268 return NULL;
4269 } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4270 }
4271 } else {
4272 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4273 if (!dev)
4274 return NULL;
4275 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4276 dev = dl_list_first(&dev->list,
4277 struct p2p_device,
4278 list);
4279 if (&dev->list == &p2p->devices)
4280 return NULL;
4281 }
4282 }
4283
4284 return &dev->info;
4285}
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08004286
4287#ifdef ANDROID_P2P
4288int p2p_search_in_progress(struct p2p_data *p2p)
4289{
4290 if (p2p == NULL)
4291 return 0;
4292
4293 return p2p->state == P2P_SEARCH;
4294}
4295#endif
4296
4297int p2p_in_progress(struct p2p_data *p2p)
4298{
4299 if (p2p == NULL)
4300 return 0;
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07004301 if (p2p->state == P2P_SEARCH || p2p->state == P2P_SEARCH_WHEN_READY ||
4302 p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY)
4303 return 2;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08004304 return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
4305}
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07004306
4307
4308void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
4309 u8 client_timeout)
4310{
4311 if (p2p) {
4312 p2p->go_timeout = go_timeout;
4313 p2p->client_timeout = client_timeout;
4314 }
4315}
4316
4317
4318void p2p_increase_search_delay(struct p2p_data *p2p, unsigned int delay)
4319{
4320 if (p2p && p2p->search_delay < delay)
4321 p2p->search_delay = delay;
4322}
4323
4324
4325#ifdef CONFIG_WIFI_DISPLAY
4326
4327static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
4328{
4329 size_t g;
4330 struct p2p_group *group;
4331
4332 for (g = 0; g < p2p->num_groups; g++) {
4333 group = p2p->groups[g];
4334 p2p_group_update_ies(group);
4335 }
4336}
4337
4338
4339int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
4340{
4341 wpabuf_free(p2p->wfd_ie_beacon);
4342 p2p->wfd_ie_beacon = ie;
4343 p2p_update_wfd_ie_groups(p2p);
4344 return 0;
4345}
4346
4347
4348int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
4349{
4350 wpabuf_free(p2p->wfd_ie_probe_req);
4351 p2p->wfd_ie_probe_req = ie;
4352 return 0;
4353}
4354
4355
4356int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
4357{
4358 wpabuf_free(p2p->wfd_ie_probe_resp);
4359 p2p->wfd_ie_probe_resp = ie;
4360 p2p_update_wfd_ie_groups(p2p);
4361 return 0;
4362}
4363
4364
4365int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
4366{
4367 wpabuf_free(p2p->wfd_ie_assoc_req);
4368 p2p->wfd_ie_assoc_req = ie;
4369 return 0;
4370}
4371
4372
4373int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
4374{
4375 wpabuf_free(p2p->wfd_ie_invitation);
4376 p2p->wfd_ie_invitation = ie;
4377 return 0;
4378}
4379
4380
4381int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
4382{
4383 wpabuf_free(p2p->wfd_ie_prov_disc_req);
4384 p2p->wfd_ie_prov_disc_req = ie;
4385 return 0;
4386}
4387
4388
4389int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
4390{
4391 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
4392 p2p->wfd_ie_prov_disc_resp = ie;
4393 return 0;
4394}
4395
4396
4397int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
4398{
4399 wpabuf_free(p2p->wfd_ie_go_neg);
4400 p2p->wfd_ie_go_neg = ie;
4401 return 0;
4402}
4403
4404
4405int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
4406{
4407 wpabuf_free(p2p->wfd_dev_info);
4408 if (elem) {
4409 p2p->wfd_dev_info = wpabuf_dup(elem);
4410 if (p2p->wfd_dev_info == NULL)
4411 return -1;
4412 } else
4413 p2p->wfd_dev_info = NULL;
4414
4415 return 0;
4416}
4417
4418
4419int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
4420{
4421 wpabuf_free(p2p->wfd_assoc_bssid);
4422 if (elem) {
4423 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
4424 if (p2p->wfd_assoc_bssid == NULL)
4425 return -1;
4426 } else
4427 p2p->wfd_assoc_bssid = NULL;
4428
4429 return 0;
4430}
4431
4432
4433int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
4434 const struct wpabuf *elem)
4435{
4436 wpabuf_free(p2p->wfd_coupled_sink_info);
4437 if (elem) {
4438 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
4439 if (p2p->wfd_coupled_sink_info == NULL)
4440 return -1;
4441 } else
4442 p2p->wfd_coupled_sink_info = NULL;
4443
4444 return 0;
4445}
4446
4447#endif /* CONFIG_WIFI_DISPLAY */
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08004448
4449
4450int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
4451 int max_disc_tu)
4452{
4453 if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
4454 return -1;
4455
4456 p2p->min_disc_int = min_disc_int;
4457 p2p->max_disc_int = max_disc_int;
4458 p2p->max_disc_tu = max_disc_tu;
4459 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Set discoverable interval: "
4460 "min=%d max=%d max_tu=%d", min_disc_int, max_disc_int,
4461 max_disc_tu);
4462
4463 return 0;
4464}