blob: 985227cff8bd928ecde3a45b0d9c4f4452215af8 [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) {
Dmitry Shmidtf8623282013-02-20 14:34:59 -0800620 u16 new_config_methods;
621 new_config_methods = msg->config_methods ?
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700622 msg->config_methods : msg->wps_config_methods;
Dmitry Shmidtf8623282013-02-20 14:34:59 -0800623 if (new_config_methods &&
624 dev->info.config_methods != new_config_methods) {
625 wpa_printf(MSG_DEBUG, "P2P: Update peer " MACSTR
626 " config_methods 0x%x -> 0x%x",
627 MAC2STR(dev->info.p2p_device_addr),
628 dev->info.config_methods,
629 new_config_methods);
630 dev->info.config_methods = new_config_methods;
631 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700632 }
633}
634
635
636/**
Dmitry Shmidt04949592012-07-19 12:16:46 -0700637 * p2p_add_device - Add peer entries based on scan results or P2P frames
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700638 * @p2p: P2P module context from p2p_init()
639 * @addr: Source address of Beacon or Probe Response frame (may be either
640 * P2P Device Address or P2P Interface Address)
641 * @level: Signal level (signal strength of the received frame from the peer)
642 * @freq: Frequency on which the Beacon or Probe Response frame was received
Dmitry Shmidtf8623282013-02-20 14:34:59 -0800643 * @rx_time: Time when the result was received
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700644 * @ies: IEs from the Beacon or Probe Response frame
645 * @ies_len: Length of ies buffer in octets
Dmitry Shmidt04949592012-07-19 12:16:46 -0700646 * @scan_res: Whether this was based on scan results
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700647 * Returns: 0 on success, -1 on failure
648 *
649 * If the scan result is for a GO, the clients in the group will also be added
650 * to the peer table. This function can also be used with some other frames
651 * like Provision Discovery Request that contains P2P Capability and P2P Device
652 * Info attributes.
653 */
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800654int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
Dmitry Shmidtf8623282013-02-20 14:34:59 -0800655 struct os_time *rx_time, int level, const u8 *ies,
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800656 size_t ies_len, int scan_res)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700657{
658 struct p2p_device *dev;
659 struct p2p_message msg;
660 const u8 *p2p_dev_addr;
661 int i;
Dmitry Shmidtf8623282013-02-20 14:34:59 -0800662 struct os_time time_now;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700663
664 os_memset(&msg, 0, sizeof(msg));
665 if (p2p_parse_ies(ies, ies_len, &msg)) {
666 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
667 "P2P: Failed to parse P2P IE for a device entry");
668 p2p_parse_free(&msg);
669 return -1;
670 }
671
672 if (msg.p2p_device_addr)
673 p2p_dev_addr = msg.p2p_device_addr;
674 else if (msg.device_id)
675 p2p_dev_addr = msg.device_id;
676 else {
677 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
678 "P2P: Ignore scan data without P2P Device Info or "
679 "P2P Device Id");
680 p2p_parse_free(&msg);
681 return -1;
682 }
683
684 if (!is_zero_ether_addr(p2p->peer_filter) &&
685 os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
686 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Do not add peer "
687 "filter for " MACSTR " due to peer filter",
688 MAC2STR(p2p_dev_addr));
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800689 p2p_parse_free(&msg);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700690 return 0;
691 }
692
693 dev = p2p_create_device(p2p, p2p_dev_addr);
694 if (dev == NULL) {
695 p2p_parse_free(&msg);
696 return -1;
697 }
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800698
Dmitry Shmidtf8623282013-02-20 14:34:59 -0800699 if (rx_time == NULL) {
700 os_get_time(&time_now);
701 rx_time = &time_now;
702 }
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800703
704 /*
705 * Update the device entry only if the new peer
706 * entry is newer than the one previously stored.
707 */
Dmitry Shmidtf8623282013-02-20 14:34:59 -0800708 if (dev->last_seen.sec > 0 &&
709 os_time_before(rx_time, &dev->last_seen)) {
710 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Do not update peer "
711 "entry based on old frame (rx_time=%u.%06u "
712 "last_seen=%u.%06u)",
713 (unsigned int) rx_time->sec,
714 (unsigned int) rx_time->usec,
715 (unsigned int) dev->last_seen.sec,
716 (unsigned int) dev->last_seen.usec);
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800717 p2p_parse_free(&msg);
718 return -1;
719 }
720
Dmitry Shmidtf8623282013-02-20 14:34:59 -0800721 os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_time));
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800722
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700723 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
724
725 if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
726 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
727 if (msg.ssid &&
728 (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
729 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
730 != 0)) {
731 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
732 dev->oper_ssid_len = msg.ssid[1];
733 }
734
735 if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
736 *msg.ds_params >= 1 && *msg.ds_params <= 14) {
737 int ds_freq;
738 if (*msg.ds_params == 14)
739 ds_freq = 2484;
740 else
741 ds_freq = 2407 + *msg.ds_params * 5;
742 if (freq != ds_freq) {
743 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
744 "P2P: Update Listen frequency based on DS "
745 "Parameter Set IE: %d -> %d MHz",
746 freq, ds_freq);
747 freq = ds_freq;
748 }
749 }
750
Dmitry Shmidt04949592012-07-19 12:16:46 -0700751 if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700752 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
753 "P2P: Update Listen frequency based on scan "
754 "results (" MACSTR " %d -> %d MHz (DS param %d)",
755 MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
756 freq, msg.ds_params ? *msg.ds_params : -1);
757 }
Dmitry Shmidt04949592012-07-19 12:16:46 -0700758 if (scan_res) {
759 dev->listen_freq = freq;
760 if (msg.group_info)
761 dev->oper_freq = freq;
762 }
Jouni Malinen75ecf522011-06-27 15:19:46 -0700763 dev->info.level = level;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700764
765 p2p_copy_wps_info(dev, 0, &msg);
766
767 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
768 wpabuf_free(dev->info.wps_vendor_ext[i]);
769 dev->info.wps_vendor_ext[i] = NULL;
770 }
771
772 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
773 if (msg.wps_vendor_ext[i] == NULL)
774 break;
775 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
776 msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
777 if (dev->info.wps_vendor_ext[i] == NULL)
778 break;
779 }
780
Dmitry Shmidt61d9df32012-08-29 16:22:06 -0700781 if (msg.wfd_subelems) {
782 wpabuf_free(dev->info.wfd_subelems);
783 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
784 }
785
Dmitry Shmidt04949592012-07-19 12:16:46 -0700786 if (scan_res) {
787 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
788 msg.group_info, msg.group_info_len);
789 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700790
791 p2p_parse_free(&msg);
792
793 if (p2p_pending_sd_req(p2p, dev))
794 dev->flags |= P2P_DEV_SD_SCHEDULE;
795
796 if (dev->flags & P2P_DEV_REPORTED)
797 return 0;
798
799 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
Dmitry Shmidtf8623282013-02-20 14:34:59 -0800800 "P2P: Peer found with Listen frequency %d MHz "
801 "(rx_time=%u.%06u)", freq, (unsigned int) rx_time->sec,
802 (unsigned int) rx_time->usec);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700803 if (dev->flags & P2P_DEV_USER_REJECTED) {
804 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
805 "P2P: Do not report rejected device");
806 return 0;
807 }
808
Dmitry Shmidtf8623282013-02-20 14:34:59 -0800809 if (dev->info.config_methods == 0 &&
810 (freq == 2412 || freq == 2437 || freq == 2462)) {
811 /*
812 * If we have only seen a Beacon frame from a GO, we do not yet
813 * know what WPS config methods it supports. Since some
814 * applications use config_methods value from P2P-DEVICE-FOUND
815 * events, postpone reporting this peer until we've fully
816 * discovered its capabilities.
817 *
818 * At least for now, do this only if the peer was detected on
819 * one of the social channels since that peer can be easily be
820 * found again and there are no limitations of having to use
821 * passive scan on this channels, so this can be done through
822 * Probe Response frame that includes the config_methods
823 * information.
824 */
825 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
826 "P2P: Do not report peer " MACSTR " with unknown "
827 "config methods", MAC2STR(addr));
828 return 0;
829 }
830
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700831 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
832 !(dev->flags & P2P_DEV_REPORTED_ONCE));
833 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
834
835 return 0;
836}
837
838
839static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
840{
841 int i;
842
Dmitry Shmidt497c1d52011-07-21 15:19:46 -0700843 if (p2p->go_neg_peer == dev) {
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800844 /*
845 * If GO Negotiation is in progress, report that it has failed.
846 */
Dmitry Shmidt497c1d52011-07-21 15:19:46 -0700847 p2p_go_neg_failed(p2p, dev, -1);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700848 p2p->go_neg_peer = NULL;
Dmitry Shmidt497c1d52011-07-21 15:19:46 -0700849 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700850 if (p2p->invite_peer == dev)
851 p2p->invite_peer = NULL;
852 if (p2p->sd_peer == dev)
853 p2p->sd_peer = NULL;
854 if (p2p->pending_client_disc_go == dev)
855 p2p->pending_client_disc_go = NULL;
856
Dmitry Shmidtc55524a2011-07-07 11:18:38 -0700857 /* dev_lost() device, but only if it was previously dev_found() */
858 if (dev->flags & P2P_DEV_REPORTED_ONCE)
859 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
860 dev->info.p2p_device_addr);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700861
862 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
863 wpabuf_free(dev->info.wps_vendor_ext[i]);
864 dev->info.wps_vendor_ext[i] = NULL;
865 }
866
Dmitry Shmidt61d9df32012-08-29 16:22:06 -0700867 wpabuf_free(dev->info.wfd_subelems);
868
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700869 os_free(dev);
870}
871
872
873static int p2p_get_next_prog_freq(struct p2p_data *p2p)
874{
875 struct p2p_channels *c;
876 struct p2p_reg_class *cla;
877 size_t cl, ch;
878 int found = 0;
879 u8 reg_class;
880 u8 channel;
881 int freq;
882
883 c = &p2p->cfg->channels;
884 for (cl = 0; cl < c->reg_classes; cl++) {
885 cla = &c->reg_class[cl];
886 if (cla->reg_class != p2p->last_prog_scan_class)
887 continue;
888 for (ch = 0; ch < cla->channels; ch++) {
889 if (cla->channel[ch] == p2p->last_prog_scan_chan) {
890 found = 1;
891 break;
892 }
893 }
894 if (found)
895 break;
896 }
897
898 if (!found) {
899 /* Start from beginning */
900 reg_class = c->reg_class[0].reg_class;
901 channel = c->reg_class[0].channel[0];
902 } else {
903 /* Pick the next channel */
904 ch++;
905 if (ch == cla->channels) {
906 cl++;
907 if (cl == c->reg_classes)
908 cl = 0;
909 ch = 0;
910 }
911 reg_class = c->reg_class[cl].reg_class;
912 channel = c->reg_class[cl].channel[ch];
913 }
914
915 freq = p2p_channel_to_freq(p2p->cfg->country, reg_class, channel);
916 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Next progressive search "
917 "channel: reg_class %u channel %u -> %d MHz",
918 reg_class, channel, freq);
919 p2p->last_prog_scan_class = reg_class;
920 p2p->last_prog_scan_chan = channel;
921
922 if (freq == 2412 || freq == 2437 || freq == 2462)
923 return 0; /* No need to add social channels */
924 return freq;
925}
926
927
928static void p2p_search(struct p2p_data *p2p)
929{
930 int freq = 0;
931 enum p2p_scan_type type;
Dmitry Shmidt04949592012-07-19 12:16:46 -0700932 u16 pw_id = DEV_PW_DEFAULT;
Dmitry Shmidt61d9df32012-08-29 16:22:06 -0700933 int res;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700934
935 if (p2p->drv_in_listen) {
936 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is still "
937 "in Listen state - wait for it to end before "
938 "continuing");
939 return;
940 }
941 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
942
Dmitry Shmidt04949592012-07-19 12:16:46 -0700943 if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
944 (freq = p2p_get_next_prog_freq(p2p)) > 0) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700945 type = P2P_SCAN_SOCIAL_PLUS_ONE;
946 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search "
947 "(+ freq %u)", freq);
948 } else {
949 type = P2P_SCAN_SOCIAL;
950 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search");
951 }
952
Dmitry Shmidt61d9df32012-08-29 16:22:06 -0700953 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
954 p2p->num_req_dev_types, p2p->req_dev_types,
955 p2p->find_dev_id, pw_id);
956 if (res < 0) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700957 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
958 "P2P: Scan request failed");
959 p2p_continue_find(p2p);
Dmitry Shmidt61d9df32012-08-29 16:22:06 -0700960 } else if (res == 1) {
961 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Could not start "
962 "p2p_scan at this point - will try again after "
963 "previous scan completes");
964 p2p_set_state(p2p, P2P_CONTINUE_SEARCH_WHEN_READY);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700965 } else {
966 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan");
967 p2p->p2p_scan_running = 1;
968 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
969 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
970 p2p, NULL);
971 }
972}
973
974
975static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
976{
977 struct p2p_data *p2p = eloop_ctx;
978 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Find timeout -> stop");
979 p2p_stop_find(p2p);
980}
981
982
983static int p2p_run_after_scan(struct p2p_data *p2p)
984{
985 struct p2p_device *dev;
986 enum p2p_after_scan op;
987
988 if (p2p->after_scan_tx) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700989 /* TODO: schedule p2p_run_after_scan to be called from TX
990 * status callback(?) */
991 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send pending "
992 "Action frame at p2p_scan completion");
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800993 p2p->cfg->send_action(p2p->cfg->cb_ctx,
994 p2p->after_scan_tx->freq,
995 p2p->after_scan_tx->dst,
996 p2p->after_scan_tx->src,
997 p2p->after_scan_tx->bssid,
998 (u8 *) (p2p->after_scan_tx + 1),
999 p2p->after_scan_tx->len,
1000 p2p->after_scan_tx->wait_time);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001001 os_free(p2p->after_scan_tx);
1002 p2p->after_scan_tx = NULL;
Irfan Sherifff44b9c42012-06-13 11:09:23 -07001003#ifdef ANDROID_P2P
1004 /* For SD frames, there is a scenario, where we can receive a SD request frame during p2p_scan.
1005 * At that moment, we will send the SD response from this context. After sending the SD response,
1006 * we need to continue p2p_find. But if we return 1 from here, p2p_find is going to be stopped.
1007 */
1008 return 0;
1009#else
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001010 return 1;
Irfan Sherifff44b9c42012-06-13 11:09:23 -07001011#endif
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001012 }
1013
1014 op = p2p->start_after_scan;
1015 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1016 switch (op) {
1017 case P2P_AFTER_SCAN_NOTHING:
1018 break;
1019 case P2P_AFTER_SCAN_LISTEN:
1020 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously "
1021 "requested Listen state");
1022 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
1023 p2p->pending_listen_usec / 1000);
1024 return 1;
1025 case P2P_AFTER_SCAN_CONNECT:
1026 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously "
1027 "requested connect with " MACSTR,
1028 MAC2STR(p2p->after_scan_peer));
1029 dev = p2p_get_device(p2p, p2p->after_scan_peer);
1030 if (dev == NULL) {
1031 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer not "
1032 "known anymore");
1033 break;
1034 }
1035 p2p_connect_send(p2p, dev);
1036 return 1;
1037 }
1038
1039 return 0;
1040}
1041
1042
1043static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1044{
1045 struct p2p_data *p2p = eloop_ctx;
1046 int running;
1047 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan timeout "
1048 "(running=%d)", p2p->p2p_scan_running);
1049 running = p2p->p2p_scan_running;
1050 /* Make sure we recover from missed scan results callback */
1051 p2p->p2p_scan_running = 0;
1052
1053 if (running)
1054 p2p_run_after_scan(p2p);
1055}
1056
1057
1058static void p2p_free_req_dev_types(struct p2p_data *p2p)
1059{
1060 p2p->num_req_dev_types = 0;
1061 os_free(p2p->req_dev_types);
1062 p2p->req_dev_types = NULL;
1063}
1064
1065
1066int p2p_find(struct p2p_data *p2p, unsigned int timeout,
1067 enum p2p_discovery_type type,
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08001068 unsigned int num_req_dev_types, const u8 *req_dev_types,
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001069 const u8 *dev_id, unsigned int search_delay)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001070{
1071 int res;
1072
1073 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting find (type=%d)",
1074 type);
Dmitry Shmidtf8623282013-02-20 14:34:59 -08001075 os_get_time(&p2p->find_start);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001076 if (p2p->p2p_scan_running) {
1077 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan is "
1078 "already running");
1079 }
1080
1081 p2p_free_req_dev_types(p2p);
1082 if (req_dev_types && num_req_dev_types) {
1083 p2p->req_dev_types = os_malloc(num_req_dev_types *
1084 WPS_DEV_TYPE_LEN);
1085 if (p2p->req_dev_types == NULL)
1086 return -1;
1087 os_memcpy(p2p->req_dev_types, req_dev_types,
1088 num_req_dev_types * WPS_DEV_TYPE_LEN);
1089 p2p->num_req_dev_types = num_req_dev_types;
1090 }
1091
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08001092 if (dev_id) {
1093 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
1094 p2p->find_dev_id = p2p->find_dev_id_buf;
1095 } else
1096 p2p->find_dev_id = NULL;
1097
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001098 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1099 p2p_clear_timeout(p2p);
1100 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1101 p2p->find_type = type;
1102 p2p_device_clear_reported(p2p);
1103 p2p_set_state(p2p, P2P_SEARCH);
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001104 p2p->search_delay = search_delay;
1105 p2p->in_search_delay = 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001106 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001107 p2p->last_p2p_find_timeout = timeout;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001108 if (timeout)
1109 eloop_register_timeout(timeout, 0, p2p_find_timeout,
1110 p2p, NULL);
1111 switch (type) {
1112 case P2P_FIND_START_WITH_FULL:
1113 case P2P_FIND_PROGRESSIVE:
1114 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1115 p2p->num_req_dev_types,
Dmitry Shmidt04949592012-07-19 12:16:46 -07001116 p2p->req_dev_types, dev_id,
1117 DEV_PW_DEFAULT);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001118 break;
1119 case P2P_FIND_ONLY_SOCIAL:
1120 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1121 p2p->num_req_dev_types,
Dmitry Shmidt04949592012-07-19 12:16:46 -07001122 p2p->req_dev_types, dev_id,
1123 DEV_PW_DEFAULT);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001124 break;
1125 default:
1126 return -1;
1127 }
1128
1129 if (res == 0) {
1130 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan");
1131 p2p->p2p_scan_running = 1;
1132 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1133 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1134 p2p, NULL);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001135 } else if (res == 1) {
1136 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Could not start "
1137 "p2p_scan at this point - will try again after "
1138 "previous scan completes");
1139 res = 0;
1140 p2p_set_state(p2p, P2P_SEARCH_WHEN_READY);
1141 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001142 } else {
1143 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start "
1144 "p2p_scan");
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001145 p2p_set_state(p2p, P2P_IDLE);
1146 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001147 }
1148
1149 return res;
1150}
1151
Dmitry Shmidt2fb777c2012-05-02 12:29:53 -07001152#ifdef ANDROID_P2P
1153int p2p_search_pending(struct p2p_data *p2p)
1154{
1155 if(p2p == NULL)
1156 return 0;
1157
1158 if(p2p->state == P2P_SEARCH_WHEN_READY)
1159 return 1;
1160
1161 return 0;
1162}
1163#endif
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001164
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001165int p2p_other_scan_completed(struct p2p_data *p2p)
1166{
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001167 if (p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY) {
1168 p2p_set_state(p2p, P2P_SEARCH);
1169 p2p_search(p2p);
1170 return 1;
1171 }
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001172 if (p2p->state != P2P_SEARCH_WHEN_READY)
1173 return 0;
1174 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting pending P2P find "
1175 "now that previous scan was completed");
1176 if (p2p_find(p2p, p2p->last_p2p_find_timeout, p2p->find_type,
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08001177 p2p->num_req_dev_types, p2p->req_dev_types,
Dmitry Shmidtf8623282013-02-20 14:34:59 -08001178 p2p->find_dev_id, p2p->search_delay) < 0) {
1179 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, P2P_EVENT_FIND_STOPPED);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001180 return 0;
Dmitry Shmidtf8623282013-02-20 14:34:59 -08001181 }
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001182 return 1;
1183}
1184
1185
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001186void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1187{
1188 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Stopping find");
1189 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1190 p2p_clear_timeout(p2p);
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001191 if (p2p->state == P2P_SEARCH ||
1192 p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY ||
1193 p2p->state == P2P_SEARCH_WHEN_READY)
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08001194 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, P2P_EVENT_FIND_STOPPED);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001195 p2p_set_state(p2p, P2P_IDLE);
1196 p2p_free_req_dev_types(p2p);
1197 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1198 p2p->go_neg_peer = NULL;
1199 p2p->sd_peer = NULL;
1200 p2p->invite_peer = NULL;
Dmitry Shmidt04949592012-07-19 12:16:46 -07001201 p2p_stop_listen_for_freq(p2p, freq);
1202}
1203
1204
1205void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1206{
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001207 if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1208 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip stop_listen "
1209 "since we are on correct channel for response");
1210 return;
1211 }
Dmitry Shmidt04949592012-07-19 12:16:46 -07001212 if (p2p->in_listen) {
1213 p2p->in_listen = 0;
1214 p2p_clear_timeout(p2p);
1215 }
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001216 if (p2p->drv_in_listen) {
1217 /*
1218 * The driver may not deliver callback to p2p_listen_end()
1219 * when the operation gets canceled, so clear the internal
1220 * variable that is tracking driver state.
1221 */
1222 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Clear "
1223 "drv_in_listen (%d)", p2p->drv_in_listen);
1224 p2p->drv_in_listen = 0;
1225 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001226 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1227}
1228
1229
1230void p2p_stop_find(struct p2p_data *p2p)
1231{
1232 p2p_stop_find_for_freq(p2p, 0);
1233}
1234
1235
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001236static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1237 unsigned int force_freq,
1238 unsigned int pref_freq)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001239{
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001240 u8 op_class, op_channel;
1241 unsigned int freq = force_freq ? force_freq : pref_freq;
1242
1243 if (p2p_freq_to_channel(p2p->cfg->country, freq,
1244 &op_class, &op_channel) < 0) {
1245 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1246 "P2P: Unsupported frequency %u MHz", freq);
1247 return -1;
1248 }
1249
1250 if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel)) {
1251 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1252 "P2P: Frequency %u MHz (oper_class %u channel %u) not "
1253 "allowed for P2P", freq, op_class, op_channel);
1254 return -1;
1255 }
1256
1257 p2p->op_reg_class = op_class;
1258 p2p->op_channel = op_channel;
1259
1260 if (force_freq) {
1261 p2p->channels.reg_classes = 1;
1262 p2p->channels.reg_class[0].channels = 1;
1263 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1264 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001265 } else {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001266 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1267 sizeof(struct p2p_channels));
1268 }
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001269
1270 return 0;
1271}
1272
1273
1274static void p2p_prepare_channel_best(struct p2p_data *p2p)
1275{
1276 u8 op_class, op_channel;
1277
1278 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1279 p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1280 p2p_freq_to_channel(p2p->cfg->country, p2p->best_freq_overall,
1281 &op_class, &op_channel) == 0) {
1282 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Select best "
1283 "overall channel as operating channel preference");
1284 p2p->op_reg_class = op_class;
1285 p2p->op_channel = op_channel;
1286 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1287 p2p_supported_freq(p2p, p2p->best_freq_5) &&
1288 p2p_freq_to_channel(p2p->cfg->country, p2p->best_freq_5,
1289 &op_class, &op_channel) == 0) {
1290 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Select best 5 GHz "
1291 "channel as operating channel preference");
1292 p2p->op_reg_class = op_class;
1293 p2p->op_channel = op_channel;
1294 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1295 p2p_supported_freq(p2p, p2p->best_freq_24) &&
1296 p2p_freq_to_channel(p2p->cfg->country, p2p->best_freq_24,
1297 &op_class, &op_channel) == 0) {
1298 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Select best 2.4 "
1299 "GHz channel as operating channel preference");
1300 p2p->op_reg_class = op_class;
1301 p2p->op_channel = op_channel;
1302 } else {
1303 p2p->op_reg_class = p2p->cfg->op_reg_class;
1304 p2p->op_channel = p2p->cfg->op_channel;
1305 }
1306
1307 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1308 sizeof(struct p2p_channels));
1309}
1310
1311
1312/**
1313 * p2p_prepare_channel - Select operating channel for GO Negotiation
1314 * @p2p: P2P module context from p2p_init()
1315 * @dev: Selected peer device
1316 * @force_freq: Forced frequency in MHz or 0 if not forced
1317 * @pref_freq: Preferred frequency in MHz or 0 if no preference
1318 * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1319 *
1320 * This function is used to do initial operating channel selection for GO
1321 * Negotiation prior to having received peer information. The selected channel
1322 * may be further optimized in p2p_reselect_channel() once the peer information
1323 * is available.
1324 */
1325static int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
1326 unsigned int force_freq, unsigned int pref_freq)
1327{
1328 if (force_freq || pref_freq) {
1329 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq) < 0)
1330 return -1;
1331 } else {
1332 p2p_prepare_channel_best(p2p);
1333 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001334 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1335 "P2P: Own preference for operation channel: "
1336 "Operating Class %u Channel %u%s",
1337 p2p->op_reg_class, p2p->op_channel,
1338 force_freq ? " (forced)" : "");
1339
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001340 if (force_freq)
1341 dev->flags |= P2P_DEV_FORCE_FREQ;
1342 else
1343 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1344
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001345 return 0;
1346}
1347
1348
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001349static void p2p_set_dev_persistent(struct p2p_device *dev,
1350 int persistent_group)
1351{
1352 switch (persistent_group) {
1353 case 0:
1354 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1355 P2P_DEV_PREFER_PERSISTENT_RECONN);
1356 break;
1357 case 1:
1358 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1359 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1360 break;
1361 case 2:
1362 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1363 P2P_DEV_PREFER_PERSISTENT_RECONN;
1364 break;
1365 }
1366}
1367
1368
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001369int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1370 enum p2p_wps_method wps_method,
1371 int go_intent, const u8 *own_interface_addr,
Dmitry Shmidt04949592012-07-19 12:16:46 -07001372 unsigned int force_freq, int persistent_group,
1373 const u8 *force_ssid, size_t force_ssid_len,
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001374 int pd_before_go_neg, unsigned int pref_freq)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001375{
1376 struct p2p_device *dev;
1377
1378 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1379 "P2P: Request to start group negotiation - peer=" MACSTR
1380 " GO Intent=%d Intended Interface Address=" MACSTR
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001381 " wps_method=%d persistent_group=%d pd_before_go_neg=%d",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001382 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001383 wps_method, persistent_group, pd_before_go_neg);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001384
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001385 dev = p2p_get_device(p2p, peer_addr);
1386 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1387 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1388 "P2P: Cannot connect to unknown P2P Device " MACSTR,
1389 MAC2STR(peer_addr));
1390 return -1;
1391 }
1392
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001393 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq) < 0)
1394 return -1;
1395
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001396 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1397 if (!(dev->info.dev_capab &
1398 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1399 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1400 "P2P: Cannot connect to P2P Device " MACSTR
1401 " that is in a group and is not discoverable",
1402 MAC2STR(peer_addr));
1403 return -1;
1404 }
1405 if (dev->oper_freq <= 0) {
1406 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1407 "P2P: Cannot connect to P2P Device " MACSTR
1408 " with incomplete information",
1409 MAC2STR(peer_addr));
1410 return -1;
1411 }
1412
1413 /*
1414 * First, try to connect directly. If the peer does not
1415 * acknowledge frames, assume it is sleeping and use device
1416 * discoverability via the GO at that point.
1417 */
1418 }
1419
Dmitry Shmidt04949592012-07-19 12:16:46 -07001420 p2p->ssid_set = 0;
1421 if (force_ssid) {
1422 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1423 force_ssid, force_ssid_len);
1424 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1425 p2p->ssid_len = force_ssid_len;
1426 p2p->ssid_set = 1;
1427 }
1428
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001429 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1430 dev->flags &= ~P2P_DEV_USER_REJECTED;
1431 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1432 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
Dmitry Shmidt04949592012-07-19 12:16:46 -07001433 if (pd_before_go_neg)
1434 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001435 else {
Dmitry Shmidt04949592012-07-19 12:16:46 -07001436 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001437 /*
1438 * Assign dialog token here to use the same value in each
1439 * retry within the same GO Negotiation exchange.
1440 */
1441 dev->dialog_token++;
1442 if (dev->dialog_token == 0)
1443 dev->dialog_token = 1;
1444 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001445 dev->connect_reqs = 0;
1446 dev->go_neg_req_sent = 0;
1447 dev->go_state = UNKNOWN_GO;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001448 p2p_set_dev_persistent(dev, persistent_group);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001449 p2p->go_intent = go_intent;
1450 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1451
1452 if (p2p->state != P2P_IDLE)
1453 p2p_stop_find(p2p);
1454
1455 if (p2p->after_scan_tx) {
1456 /*
1457 * We need to drop the pending frame to avoid issues with the
1458 * new GO Negotiation, e.g., when the pending frame was from a
1459 * previous attempt at starting a GO Negotiation.
1460 */
1461 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped "
1462 "previous pending Action frame TX that was waiting "
1463 "for p2p_scan completion");
1464 os_free(p2p->after_scan_tx);
1465 p2p->after_scan_tx = NULL;
1466 }
1467
1468 dev->wps_method = wps_method;
1469 dev->status = P2P_SC_SUCCESS;
1470
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001471 if (p2p->p2p_scan_running) {
1472 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1473 "P2P: p2p_scan running - delay connect send");
1474 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1475 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1476 return 0;
1477 }
1478 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1479
1480 return p2p_connect_send(p2p, dev);
1481}
1482
1483
1484int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1485 enum p2p_wps_method wps_method,
1486 int go_intent, const u8 *own_interface_addr,
Dmitry Shmidt04949592012-07-19 12:16:46 -07001487 unsigned int force_freq, int persistent_group,
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001488 const u8 *force_ssid, size_t force_ssid_len,
1489 unsigned int pref_freq)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001490{
1491 struct p2p_device *dev;
1492
1493 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1494 "P2P: Request to authorize group negotiation - peer=" MACSTR
1495 " GO Intent=%d Intended Interface Address=" MACSTR
1496 " wps_method=%d persistent_group=%d",
1497 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1498 wps_method, persistent_group);
1499
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001500 dev = p2p_get_device(p2p, peer_addr);
1501 if (dev == NULL) {
1502 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1503 "P2P: Cannot authorize unknown P2P Device " MACSTR,
1504 MAC2STR(peer_addr));
1505 return -1;
1506 }
1507
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001508 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq) < 0)
1509 return -1;
1510
Dmitry Shmidt04949592012-07-19 12:16:46 -07001511 p2p->ssid_set = 0;
1512 if (force_ssid) {
1513 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1514 force_ssid, force_ssid_len);
1515 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1516 p2p->ssid_len = force_ssid_len;
1517 p2p->ssid_set = 1;
1518 }
1519
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001520 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1521 dev->flags &= ~P2P_DEV_USER_REJECTED;
1522 dev->go_neg_req_sent = 0;
1523 dev->go_state = UNKNOWN_GO;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001524 p2p_set_dev_persistent(dev, persistent_group);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001525 p2p->go_intent = go_intent;
1526 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1527
1528 dev->wps_method = wps_method;
1529 dev->status = P2P_SC_SUCCESS;
1530
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001531 return 0;
1532}
1533
1534
1535void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1536 struct p2p_device *dev, struct p2p_message *msg)
1537{
1538 os_get_time(&dev->last_seen);
1539
1540 p2p_copy_wps_info(dev, 0, msg);
1541
1542 if (msg->listen_channel) {
1543 int freq;
1544 freq = p2p_channel_to_freq((char *) msg->listen_channel,
1545 msg->listen_channel[3],
1546 msg->listen_channel[4]);
1547 if (freq < 0) {
1548 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1549 "P2P: Unknown peer Listen channel: "
1550 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1551 msg->listen_channel[0],
1552 msg->listen_channel[1],
1553 msg->listen_channel[2],
1554 msg->listen_channel[3],
1555 msg->listen_channel[4]);
1556 } else {
1557 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update "
1558 "peer " MACSTR " Listen channel: %u -> %u MHz",
1559 MAC2STR(dev->info.p2p_device_addr),
1560 dev->listen_freq, freq);
1561 dev->listen_freq = freq;
1562 }
1563 }
1564
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001565 if (msg->wfd_subelems) {
1566 wpabuf_free(dev->info.wfd_subelems);
1567 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1568 }
1569
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001570 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1571 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1572 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1573 "P2P: Completed device entry based on data from "
1574 "GO Negotiation Request");
1575 } else {
1576 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1577 "P2P: Created device entry based on GO Neg Req: "
1578 MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1579 "listen_freq=%d",
1580 MAC2STR(dev->info.p2p_device_addr),
1581 dev->info.dev_capab, dev->info.group_capab,
1582 dev->info.device_name, dev->listen_freq);
1583 }
1584
1585 dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1586
1587 if (dev->flags & P2P_DEV_USER_REJECTED) {
1588 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1589 "P2P: Do not report rejected device");
1590 return;
1591 }
1592
1593 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1594 !(dev->flags & P2P_DEV_REPORTED_ONCE));
1595 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1596}
1597
1598
1599void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1600{
1601 os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1602 p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1603 os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1604 p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1605 *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1606}
1607
1608
1609int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1610{
1611 p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1612 p2p_random(params->passphrase, 8);
1613 return 0;
1614}
1615
1616
1617void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1618{
1619 struct p2p_go_neg_results res;
1620 int go = peer->go_state == LOCAL_GO;
1621 struct p2p_channels intersection;
1622 int freqs;
1623 size_t i, j;
1624
1625 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1626 "P2P: GO Negotiation with " MACSTR " completed (%s will be "
1627 "GO)", MAC2STR(peer->info.p2p_device_addr),
1628 go ? "local end" : "peer");
1629
1630 os_memset(&res, 0, sizeof(res));
1631 res.role_go = go;
1632 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1633 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1634 res.wps_method = peer->wps_method;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001635 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1636 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1637 res.persistent_group = 2;
1638 else
1639 res.persistent_group = 1;
1640 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001641
1642 if (go) {
1643 /* Setup AP mode for WPS provisioning */
1644 res.freq = p2p_channel_to_freq(p2p->cfg->country,
1645 p2p->op_reg_class,
1646 p2p->op_channel);
1647 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1648 res.ssid_len = p2p->ssid_len;
1649 p2p_random(res.passphrase, 8);
1650 } else {
1651 res.freq = peer->oper_freq;
1652 if (p2p->ssid_len) {
1653 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1654 res.ssid_len = p2p->ssid_len;
1655 }
1656 }
1657
1658 p2p_channels_intersect(&p2p->channels, &peer->channels,
1659 &intersection);
1660 freqs = 0;
1661 for (i = 0; i < intersection.reg_classes; i++) {
1662 struct p2p_reg_class *c = &intersection.reg_class[i];
1663 if (freqs + 1 == P2P_MAX_CHANNELS)
1664 break;
1665 for (j = 0; j < c->channels; j++) {
1666 int freq;
1667 if (freqs + 1 == P2P_MAX_CHANNELS)
1668 break;
1669 freq = p2p_channel_to_freq(peer->country, c->reg_class,
1670 c->channel[j]);
1671 if (freq < 0)
1672 continue;
1673 res.freq_list[freqs++] = freq;
1674 }
1675 }
1676
1677 res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1678
1679 p2p_clear_timeout(p2p);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001680 p2p->ssid_set = 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001681 peer->go_neg_req_sent = 0;
1682 peer->wps_method = WPS_NOT_READY;
1683
1684 p2p_set_state(p2p, P2P_PROVISIONING);
1685 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1686}
1687
1688
1689static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1690 const u8 *data, size_t len, int rx_freq)
1691{
1692 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1693 "P2P: RX P2P Public Action from " MACSTR, MAC2STR(sa));
1694 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1695
1696 if (len < 1)
1697 return;
1698
1699 switch (data[0]) {
1700 case P2P_GO_NEG_REQ:
1701 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1702 break;
1703 case P2P_GO_NEG_RESP:
1704 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1705 break;
1706 case P2P_GO_NEG_CONF:
1707 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1708 break;
1709 case P2P_INVITATION_REQ:
1710 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1711 rx_freq);
1712 break;
1713 case P2P_INVITATION_RESP:
1714 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1715 break;
1716 case P2P_PROV_DISC_REQ:
1717 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1718 break;
1719 case P2P_PROV_DISC_RESP:
1720 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1721 break;
1722 case P2P_DEV_DISC_REQ:
1723 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1724 break;
1725 case P2P_DEV_DISC_RESP:
1726 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1727 break;
1728 default:
1729 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1730 "P2P: Unsupported P2P Public Action frame type %d",
1731 data[0]);
1732 break;
1733 }
1734}
1735
1736
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001737static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1738 const u8 *sa, const u8 *bssid, const u8 *data,
1739 size_t len, int freq)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001740{
1741 if (len < 1)
1742 return;
1743
1744 switch (data[0]) {
1745 case WLAN_PA_VENDOR_SPECIFIC:
1746 data++;
1747 len--;
1748 if (len < 3)
1749 return;
1750 if (WPA_GET_BE24(data) != OUI_WFA)
1751 return;
1752
1753 data += 3;
1754 len -= 3;
1755 if (len < 1)
1756 return;
1757
1758 if (*data != P2P_OUI_TYPE)
1759 return;
1760
1761 p2p_rx_p2p_action(p2p, sa, data + 1, len - 1, freq);
1762 break;
1763 case WLAN_PA_GAS_INITIAL_REQ:
1764 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1765 break;
1766 case WLAN_PA_GAS_INITIAL_RESP:
1767 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1768 break;
1769 case WLAN_PA_GAS_COMEBACK_REQ:
1770 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1771 break;
1772 case WLAN_PA_GAS_COMEBACK_RESP:
1773 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1774 break;
1775 }
1776}
1777
1778
1779void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1780 const u8 *bssid, u8 category,
1781 const u8 *data, size_t len, int freq)
1782{
1783 if (category == WLAN_ACTION_PUBLIC) {
1784 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1785 return;
1786 }
1787
1788 if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1789 return;
1790
1791 if (len < 4)
1792 return;
1793
1794 if (WPA_GET_BE24(data) != OUI_WFA)
1795 return;
1796 data += 3;
1797 len -= 3;
1798
1799 if (*data != P2P_OUI_TYPE)
1800 return;
1801 data++;
1802 len--;
1803
1804 /* P2P action frame */
1805 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1806 "P2P: RX P2P Action from " MACSTR, MAC2STR(sa));
1807 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1808
1809 if (len < 1)
1810 return;
1811 switch (data[0]) {
1812 case P2P_NOA:
1813 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1814 "P2P: Received P2P Action - Notice of Absence");
1815 /* TODO */
1816 break;
1817 case P2P_PRESENCE_REQ:
1818 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1819 break;
1820 case P2P_PRESENCE_RESP:
1821 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1822 break;
1823 case P2P_GO_DISC_REQ:
1824 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1825 break;
1826 default:
1827 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1828 "P2P: Received P2P Action - unknown type %u", data[0]);
1829 break;
1830 }
1831}
1832
1833
1834static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1835{
1836 struct p2p_data *p2p = eloop_ctx;
1837 if (p2p->go_neg_peer == NULL)
1838 return;
1839 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1840 p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1841 p2p_connect_send(p2p, p2p->go_neg_peer);
1842}
1843
1844
1845static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1846{
1847 struct p2p_data *p2p = eloop_ctx;
1848 if (p2p->invite_peer == NULL)
1849 return;
1850 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1851 p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr);
1852}
1853
1854
1855static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1856 const u8 *ie, size_t ie_len)
1857{
1858 struct p2p_message msg;
1859 struct p2p_device *dev;
1860
1861 os_memset(&msg, 0, sizeof(msg));
1862 if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1863 {
1864 p2p_parse_free(&msg);
1865 return; /* not a P2P probe */
1866 }
1867
1868 if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
1869 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
1870 != 0) {
1871 /* The Probe Request is not part of P2P Device Discovery. It is
1872 * not known whether the source address of the frame is the P2P
1873 * Device Address or P2P Interface Address. Do not add a new
1874 * peer entry based on this frames.
1875 */
1876 p2p_parse_free(&msg);
1877 return;
1878 }
1879
1880 dev = p2p_get_device(p2p, addr);
1881 if (dev) {
1882 if (dev->country[0] == 0 && msg.listen_channel)
1883 os_memcpy(dev->country, msg.listen_channel, 3);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001884 os_get_time(&dev->last_seen);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001885 p2p_parse_free(&msg);
1886 return; /* already known */
1887 }
1888
1889 dev = p2p_create_device(p2p, addr);
1890 if (dev == NULL) {
1891 p2p_parse_free(&msg);
1892 return;
1893 }
1894
1895 os_get_time(&dev->last_seen);
1896 dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
1897
1898 if (msg.listen_channel) {
1899 os_memcpy(dev->country, msg.listen_channel, 3);
1900 dev->listen_freq = p2p_channel_to_freq(dev->country,
1901 msg.listen_channel[3],
1902 msg.listen_channel[4]);
1903 }
1904
1905 p2p_copy_wps_info(dev, 1, &msg);
1906
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001907 if (msg.wfd_subelems) {
1908 wpabuf_free(dev->info.wfd_subelems);
1909 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
1910 }
1911
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001912 p2p_parse_free(&msg);
1913
1914 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1915 "P2P: Created device entry based on Probe Req: " MACSTR
1916 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
1917 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
1918 dev->info.group_capab, dev->info.device_name,
1919 dev->listen_freq);
1920}
1921
1922
1923struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
1924 const u8 *addr,
1925 struct p2p_message *msg)
1926{
1927 struct p2p_device *dev;
1928
1929 dev = p2p_get_device(p2p, addr);
1930 if (dev) {
1931 os_get_time(&dev->last_seen);
1932 return dev; /* already known */
1933 }
1934
1935 dev = p2p_create_device(p2p, addr);
1936 if (dev == NULL)
1937 return NULL;
1938
1939 p2p_add_dev_info(p2p, addr, dev, msg);
1940
1941 return dev;
1942}
1943
1944
1945static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
1946{
1947 if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
1948 return 1;
1949 if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
1950 WPA_GET_BE32(&req_dev_type[2]) == 0 &&
1951 WPA_GET_BE16(&req_dev_type[6]) == 0)
1952 return 1; /* Category match with wildcard OUI/sub-category */
1953 return 0;
1954}
1955
1956
1957int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
1958 size_t num_req_dev_type)
1959{
1960 size_t i;
1961 for (i = 0; i < num_req_dev_type; i++) {
1962 if (dev_type_match(dev_type, req_dev_type[i]))
1963 return 1;
1964 }
1965 return 0;
1966}
1967
1968
1969/**
1970 * p2p_match_dev_type - Match local device type with requested type
1971 * @p2p: P2P module context from p2p_init()
1972 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1973 * Returns: 1 on match, 0 on mismatch
1974 *
1975 * This function can be used to match the Requested Device Type attribute in
1976 * WPS IE with the local device types for deciding whether to reply to a Probe
1977 * Request frame.
1978 */
1979int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
1980{
1981 struct wps_parse_attr attr;
1982 size_t i;
1983
1984 if (wps_parse_msg(wps, &attr))
1985 return 1; /* assume no Requested Device Type attributes */
1986
1987 if (attr.num_req_dev_type == 0)
1988 return 1; /* no Requested Device Type attributes -> match */
1989
1990 if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
1991 attr.num_req_dev_type))
1992 return 1; /* Own Primary Device Type matches */
1993
1994 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++)
1995 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
1996 attr.req_dev_type,
1997 attr.num_req_dev_type))
1998 return 1; /* Own Secondary Device Type matches */
1999
2000 /* No matching device type found */
2001 return 0;
2002}
2003
2004
2005struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
2006{
2007 struct wpabuf *buf;
2008 u8 *len;
Dmitry Shmidt04949592012-07-19 12:16:46 -07002009 int pw_id = -1;
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002010 size_t extra = 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002011
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002012#ifdef CONFIG_WIFI_DISPLAY
2013 if (p2p->wfd_ie_probe_resp)
2014 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
2015#endif /* CONFIG_WIFI_DISPLAY */
2016
2017 buf = wpabuf_alloc(1000 + extra);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002018 if (buf == NULL)
2019 return NULL;
2020
Dmitry Shmidt04949592012-07-19 12:16:46 -07002021 if (p2p->go_neg_peer) {
2022 /* Advertise immediate availability of WPS credential */
2023 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
2024 }
2025
2026 p2p_build_wps_ie(p2p, buf, pw_id, 1);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002027
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002028#ifdef CONFIG_WIFI_DISPLAY
2029 if (p2p->wfd_ie_probe_resp)
2030 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
2031#endif /* CONFIG_WIFI_DISPLAY */
2032
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002033 /* P2P IE */
2034 len = p2p_buf_add_ie_hdr(buf);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002035 p2p_buf_add_capability(buf, p2p->dev_capab &
2036 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002037 if (p2p->ext_listen_interval)
2038 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
2039 p2p->ext_listen_interval);
2040 p2p_buf_add_device_info(buf, p2p, NULL);
2041 p2p_buf_update_ie_hdr(buf, len);
2042
2043 return buf;
2044}
2045
2046
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002047static int is_11b(u8 rate)
2048{
2049 return rate == 0x02 || rate == 0x04 || rate == 0x0b || rate == 0x16;
2050}
2051
2052
2053static int supp_rates_11b_only(struct ieee802_11_elems *elems)
2054{
2055 int num_11b = 0, num_others = 0;
2056 int i;
2057
2058 if (elems->supp_rates == NULL && elems->ext_supp_rates == NULL)
2059 return 0;
2060
2061 for (i = 0; elems->supp_rates && i < elems->supp_rates_len; i++) {
2062 if (is_11b(elems->supp_rates[i]))
2063 num_11b++;
2064 else
2065 num_others++;
2066 }
2067
2068 for (i = 0; elems->ext_supp_rates && i < elems->ext_supp_rates_len;
2069 i++) {
2070 if (is_11b(elems->ext_supp_rates[i]))
2071 num_11b++;
2072 else
2073 num_others++;
2074 }
2075
2076 return num_11b > 0 && num_others == 0;
2077}
2078
2079
Dmitry Shmidt04949592012-07-19 12:16:46 -07002080static enum p2p_probe_req_status
2081p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2082 const u8 *bssid, const u8 *ie, size_t ie_len)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002083{
2084 struct ieee802_11_elems elems;
2085 struct wpabuf *buf;
2086 struct ieee80211_mgmt *resp;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002087 struct p2p_message msg;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002088 struct wpabuf *ies;
2089
2090 if (!p2p->in_listen || !p2p->drv_in_listen) {
2091 /* not in Listen state - ignore Probe Request */
Dmitry Shmidt04949592012-07-19 12:16:46 -07002092 return P2P_PREQ_NOT_LISTEN;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002093 }
2094
2095 if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
2096 ParseFailed) {
2097 /* Ignore invalid Probe Request frames */
Dmitry Shmidt04949592012-07-19 12:16:46 -07002098 return P2P_PREQ_MALFORMED;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002099 }
2100
2101 if (elems.p2p == NULL) {
2102 /* not a P2P probe - ignore it */
Dmitry Shmidt04949592012-07-19 12:16:46 -07002103 return P2P_PREQ_NOT_P2P;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002104 }
2105
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002106 if (dst && !is_broadcast_ether_addr(dst) &&
2107 os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2108 /* Not sent to the broadcast address or our P2P Device Address
2109 */
Dmitry Shmidt04949592012-07-19 12:16:46 -07002110 return P2P_PREQ_NOT_PROCESSED;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002111 }
2112
2113 if (bssid && !is_broadcast_ether_addr(bssid)) {
2114 /* Not sent to the Wildcard BSSID */
Dmitry Shmidt04949592012-07-19 12:16:46 -07002115 return P2P_PREQ_NOT_PROCESSED;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002116 }
2117
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002118 if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2119 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2120 0) {
2121 /* not using P2P Wildcard SSID - ignore */
Dmitry Shmidt04949592012-07-19 12:16:46 -07002122 return P2P_PREQ_NOT_PROCESSED;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002123 }
2124
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002125 if (supp_rates_11b_only(&elems)) {
2126 /* Indicates support for 11b rates only */
Dmitry Shmidt04949592012-07-19 12:16:46 -07002127 return P2P_PREQ_NOT_P2P;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002128 }
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002129
2130 os_memset(&msg, 0, sizeof(msg));
2131 if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2132 /* Could not parse P2P attributes */
Dmitry Shmidt04949592012-07-19 12:16:46 -07002133 return P2P_PREQ_NOT_P2P;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002134 }
2135
2136 if (msg.device_id &&
Dmitry Shmidt04949592012-07-19 12:16:46 -07002137 os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002138 /* Device ID did not match */
2139 p2p_parse_free(&msg);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002140 return P2P_PREQ_NOT_PROCESSED;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002141 }
2142
2143 /* Check Requested Device Type match */
2144 if (msg.wps_attributes &&
2145 !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2146 /* No match with Requested Device Type */
2147 p2p_parse_free(&msg);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002148 return P2P_PREQ_NOT_PROCESSED;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002149 }
2150 p2p_parse_free(&msg);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002151
Dmitry Shmidt04949592012-07-19 12:16:46 -07002152 if (!p2p->cfg->send_probe_resp) {
2153 /* Response generated elsewhere */
2154 return P2P_PREQ_NOT_PROCESSED;
2155 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002156
2157 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2158 "P2P: Reply to P2P Probe Request in Listen state");
2159
2160 /*
2161 * We do not really have a specific BSS that this frame is advertising,
2162 * so build a frame that has some information in valid format. This is
2163 * really only used for discovery purposes, not to learn exact BSS
2164 * parameters.
2165 */
2166 ies = p2p_build_probe_resp_ies(p2p);
2167 if (ies == NULL)
Dmitry Shmidt04949592012-07-19 12:16:46 -07002168 return P2P_PREQ_NOT_PROCESSED;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002169
2170 buf = wpabuf_alloc(200 + wpabuf_len(ies));
2171 if (buf == NULL) {
2172 wpabuf_free(ies);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002173 return P2P_PREQ_NOT_PROCESSED;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002174 }
2175
2176 resp = NULL;
2177 resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
2178
2179 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2180 (WLAN_FC_STYPE_PROBE_RESP << 4));
2181 os_memcpy(resp->da, addr, ETH_ALEN);
2182 os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2183 os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2184 resp->u.probe_resp.beacon_int = host_to_le16(100);
2185 /* hardware or low-level driver will setup seq_ctrl and timestamp */
2186 resp->u.probe_resp.capab_info =
2187 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2188 WLAN_CAPABILITY_PRIVACY |
2189 WLAN_CAPABILITY_SHORT_SLOT_TIME);
2190
2191 wpabuf_put_u8(buf, WLAN_EID_SSID);
2192 wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2193 wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2194
2195 wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2196 wpabuf_put_u8(buf, 8);
2197 wpabuf_put_u8(buf, (60 / 5) | 0x80);
2198 wpabuf_put_u8(buf, 90 / 5);
2199 wpabuf_put_u8(buf, (120 / 5) | 0x80);
2200 wpabuf_put_u8(buf, 180 / 5);
2201 wpabuf_put_u8(buf, (240 / 5) | 0x80);
2202 wpabuf_put_u8(buf, 360 / 5);
2203 wpabuf_put_u8(buf, 480 / 5);
2204 wpabuf_put_u8(buf, 540 / 5);
2205
2206 wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2207 wpabuf_put_u8(buf, 1);
2208 wpabuf_put_u8(buf, p2p->cfg->channel);
2209
2210 wpabuf_put_buf(buf, ies);
2211 wpabuf_free(ies);
2212
2213 p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
2214
2215 wpabuf_free(buf);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002216
2217 return P2P_PREQ_NOT_PROCESSED;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002218}
2219
2220
Dmitry Shmidt04949592012-07-19 12:16:46 -07002221enum p2p_probe_req_status
2222p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2223 const u8 *bssid, const u8 *ie, size_t ie_len)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002224{
Dmitry Shmidt04949592012-07-19 12:16:46 -07002225 enum p2p_probe_req_status res;
2226
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002227 p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2228
Dmitry Shmidt04949592012-07-19 12:16:46 -07002229 res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002230
2231 if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2232 p2p->go_neg_peer &&
2233 os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2234 == 0) {
2235 /* Received a Probe Request from GO Negotiation peer */
2236 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2237 "P2P: Found GO Negotiation peer - try to start GO "
2238 "negotiation from timeout");
2239 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002240 return P2P_PREQ_PROCESSED;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002241 }
2242
2243 if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2244 p2p->invite_peer &&
2245 os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2246 == 0) {
2247 /* Received a Probe Request from Invite peer */
2248 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2249 "P2P: Found Invite peer - try to start Invite from "
2250 "timeout");
2251 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002252 return P2P_PREQ_PROCESSED;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002253 }
2254
Dmitry Shmidt04949592012-07-19 12:16:46 -07002255 return res;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002256}
2257
2258
2259static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2260 u8 *buf, size_t len, struct wpabuf *p2p_ie)
2261{
2262 struct wpabuf *tmp;
2263 u8 *lpos;
2264 size_t tmplen;
2265 int res;
2266 u8 group_capab;
2267
2268 if (p2p_ie == NULL)
2269 return 0; /* WLAN AP is not a P2P manager */
2270
2271 /*
2272 * (Re)Association Request - P2P IE
2273 * P2P Capability attribute (shall be present)
2274 * P2P Interface attribute (present if concurrent device and
2275 * P2P Management is enabled)
2276 */
2277 tmp = wpabuf_alloc(200);
2278 if (tmp == NULL)
2279 return -1;
2280
2281 lpos = p2p_buf_add_ie_hdr(tmp);
2282 group_capab = 0;
2283 if (p2p->num_groups > 0) {
2284 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2285 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2286 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2287 p2p->cross_connect)
2288 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2289 }
2290 p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2291 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2292 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2293 p2p_buf_add_p2p_interface(tmp, p2p);
2294 p2p_buf_update_ie_hdr(tmp, lpos);
2295
2296 tmplen = wpabuf_len(tmp);
2297 if (tmplen > len)
2298 res = -1;
2299 else {
2300 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2301 res = tmplen;
2302 }
2303 wpabuf_free(tmp);
2304
2305 return res;
2306}
2307
2308
2309int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2310 size_t len, int p2p_group, struct wpabuf *p2p_ie)
2311{
2312 struct wpabuf *tmp;
2313 u8 *lpos;
2314 struct p2p_device *peer;
2315 size_t tmplen;
2316 int res;
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002317 size_t extra = 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002318
2319 if (!p2p_group)
2320 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2321
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002322#ifdef CONFIG_WIFI_DISPLAY
2323 if (p2p->wfd_ie_assoc_req)
2324 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2325#endif /* CONFIG_WIFI_DISPLAY */
2326
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002327 /*
2328 * (Re)Association Request - P2P IE
2329 * P2P Capability attribute (shall be present)
2330 * Extended Listen Timing (may be present)
2331 * P2P Device Info attribute (shall be present)
2332 */
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002333 tmp = wpabuf_alloc(200 + extra);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002334 if (tmp == NULL)
2335 return -1;
2336
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002337#ifdef CONFIG_WIFI_DISPLAY
2338 if (p2p->wfd_ie_assoc_req)
2339 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2340#endif /* CONFIG_WIFI_DISPLAY */
2341
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002342 peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2343
2344 lpos = p2p_buf_add_ie_hdr(tmp);
2345 p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2346 if (p2p->ext_listen_interval)
2347 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2348 p2p->ext_listen_interval);
2349 p2p_buf_add_device_info(tmp, p2p, peer);
2350 p2p_buf_update_ie_hdr(tmp, lpos);
2351
2352 tmplen = wpabuf_len(tmp);
2353 if (tmplen > len)
2354 res = -1;
2355 else {
2356 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2357 res = tmplen;
2358 }
2359 wpabuf_free(tmp);
2360
2361 return res;
2362}
2363
2364
2365int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2366{
2367 struct wpabuf *p2p_ie;
2368 int ret;
2369
2370 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2371 if (p2p_ie == NULL)
2372 return 0;
2373
2374 ret = p2p_attr_text(p2p_ie, buf, end);
2375 wpabuf_free(p2p_ie);
2376 return ret;
2377}
2378
2379
Dmitry Shmidt04949592012-07-19 12:16:46 -07002380int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2381{
2382 struct p2p_message msg;
2383
2384 os_memset(&msg, 0, sizeof(msg));
2385 if (p2p_parse_p2p_ie(p2p_ie, &msg))
2386 return -1;
2387
2388 if (msg.p2p_device_addr) {
2389 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2390 return 0;
2391 } else if (msg.device_id) {
2392 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2393 return 0;
2394 }
2395 return -1;
2396}
2397
2398
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08002399int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2400{
2401 struct wpabuf *p2p_ie;
Dmitry Shmidt04949592012-07-19 12:16:46 -07002402 int ret;
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08002403
2404 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2405 P2P_IE_VENDOR_TYPE);
2406 if (p2p_ie == NULL)
2407 return -1;
Dmitry Shmidt04949592012-07-19 12:16:46 -07002408 ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08002409 wpabuf_free(p2p_ie);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002410 return ret;
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08002411}
2412
2413
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002414static void p2p_clear_go_neg(struct p2p_data *p2p)
2415{
2416 p2p->go_neg_peer = NULL;
2417 p2p_clear_timeout(p2p);
2418 p2p_set_state(p2p, P2P_IDLE);
2419}
2420
2421
2422void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2423{
2424 if (p2p->go_neg_peer == NULL) {
2425 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2426 "P2P: No pending Group Formation - "
2427 "ignore WPS registration success notification");
2428 return; /* No pending Group Formation */
2429 }
2430
2431 if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2432 0) {
2433 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2434 "P2P: Ignore WPS registration success notification "
2435 "for " MACSTR " (GO Negotiation peer " MACSTR ")",
2436 MAC2STR(mac_addr),
2437 MAC2STR(p2p->go_neg_peer->intended_addr));
2438 return; /* Ignore unexpected peer address */
2439 }
2440
2441 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2442 "P2P: Group Formation completed successfully with " MACSTR,
2443 MAC2STR(mac_addr));
2444
2445 p2p_clear_go_neg(p2p);
2446}
2447
2448
2449void p2p_group_formation_failed(struct p2p_data *p2p)
2450{
2451 if (p2p->go_neg_peer == NULL) {
2452 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2453 "P2P: No pending Group Formation - "
2454 "ignore group formation failure notification");
2455 return; /* No pending Group Formation */
2456 }
2457
2458 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2459 "P2P: Group Formation failed with " MACSTR,
2460 MAC2STR(p2p->go_neg_peer->intended_addr));
2461
2462 p2p_clear_go_neg(p2p);
2463}
2464
2465
2466struct p2p_data * p2p_init(const struct p2p_config *cfg)
2467{
2468 struct p2p_data *p2p;
2469
2470 if (cfg->max_peers < 1)
2471 return NULL;
2472
2473 p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2474 if (p2p == NULL)
2475 return NULL;
2476 p2p->cfg = (struct p2p_config *) (p2p + 1);
2477 os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2478 if (cfg->dev_name)
2479 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2480 if (cfg->manufacturer)
2481 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2482 if (cfg->model_name)
2483 p2p->cfg->model_name = os_strdup(cfg->model_name);
2484 if (cfg->model_number)
2485 p2p->cfg->model_number = os_strdup(cfg->model_number);
2486 if (cfg->serial_number)
2487 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002488 if (cfg->pref_chan) {
2489 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2490 sizeof(struct p2p_channel));
2491 if (p2p->cfg->pref_chan) {
2492 os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2493 cfg->num_pref_chan *
2494 sizeof(struct p2p_channel));
2495 } else
2496 p2p->cfg->num_pref_chan = 0;
2497 }
2498
Irfan Sherifff44b9c42012-06-13 11:09:23 -07002499#ifdef ANDROID_P2P
2500 /* 100ms listen time is too less to receive the response frames in some scenarios
2501 * increasing min listen time to 200ms.
2502 */
2503 p2p->min_disc_int = 2;
2504 /* SD_FAIR_POLICY: Initializing the SD current serviced pointer to NULL */
2505 p2p->sd_dev_list = NULL;
2506#else
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002507 p2p->min_disc_int = 1;
Irfan Sherifff44b9c42012-06-13 11:09:23 -07002508#endif
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002509 p2p->max_disc_int = 3;
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08002510 p2p->max_disc_tu = -1;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002511
2512 os_get_random(&p2p->next_tie_breaker, 1);
2513 p2p->next_tie_breaker &= 0x01;
2514 if (cfg->sd_request)
2515 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2516 p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2517 if (cfg->concurrent_operations)
2518 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2519 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2520
2521 dl_list_init(&p2p->devices);
2522
2523 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2524 p2p_expiration_timeout, p2p, NULL);
2525
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002526 p2p->go_timeout = 100;
2527 p2p->client_timeout = 20;
2528
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002529 return p2p;
2530}
2531
2532
2533void p2p_deinit(struct p2p_data *p2p)
2534{
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002535#ifdef CONFIG_WIFI_DISPLAY
2536 wpabuf_free(p2p->wfd_ie_beacon);
2537 wpabuf_free(p2p->wfd_ie_probe_req);
2538 wpabuf_free(p2p->wfd_ie_probe_resp);
2539 wpabuf_free(p2p->wfd_ie_assoc_req);
2540 wpabuf_free(p2p->wfd_ie_invitation);
2541 wpabuf_free(p2p->wfd_ie_prov_disc_req);
2542 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2543 wpabuf_free(p2p->wfd_ie_go_neg);
2544 wpabuf_free(p2p->wfd_dev_info);
2545 wpabuf_free(p2p->wfd_assoc_bssid);
2546 wpabuf_free(p2p->wfd_coupled_sink_info);
2547#endif /* CONFIG_WIFI_DISPLAY */
2548
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002549 eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2550 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2551 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2552 p2p_flush(p2p);
2553 p2p_free_req_dev_types(p2p);
2554 os_free(p2p->cfg->dev_name);
2555 os_free(p2p->cfg->manufacturer);
2556 os_free(p2p->cfg->model_name);
2557 os_free(p2p->cfg->model_number);
2558 os_free(p2p->cfg->serial_number);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002559 os_free(p2p->cfg->pref_chan);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002560 os_free(p2p->groups);
2561 wpabuf_free(p2p->sd_resp);
2562 os_free(p2p->after_scan_tx);
2563 p2p_remove_wps_vendor_extensions(p2p);
2564 os_free(p2p);
2565}
2566
2567
2568void p2p_flush(struct p2p_data *p2p)
2569{
2570 struct p2p_device *dev, *prev;
Dmitry Shmidt04949592012-07-19 12:16:46 -07002571 p2p_stop_find(p2p);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002572 dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2573 list) {
2574 dl_list_del(&dev->list);
2575 p2p_device_free(p2p, dev);
2576 }
Irfan Sherifff44b9c42012-06-13 11:09:23 -07002577#ifdef ANDROID_P2P
2578 /* SD_FAIR_POLICY: Initializing the SD current serviced pointer to NULL */
2579 p2p->sd_dev_list = NULL;
2580#endif
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002581 p2p_free_sd_queries(p2p);
2582 os_free(p2p->after_scan_tx);
2583 p2p->after_scan_tx = NULL;
2584}
2585
2586
2587int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2588{
2589 struct p2p_device *dev;
2590
2591 dev = p2p_get_device(p2p, addr);
2592 if (dev == NULL)
2593 return -1;
2594
2595 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Unauthorizing " MACSTR,
2596 MAC2STR(addr));
2597
2598 if (p2p->go_neg_peer == dev)
2599 p2p->go_neg_peer = NULL;
2600
2601 dev->wps_method = WPS_NOT_READY;
2602 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2603 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2604
2605 /* Check if after_scan_tx is for this peer. If so free it */
2606 if (p2p->after_scan_tx &&
2607 os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2608 os_free(p2p->after_scan_tx);
2609 p2p->after_scan_tx = NULL;
2610 }
2611
2612 return 0;
2613}
2614
2615
2616int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2617{
2618 os_free(p2p->cfg->dev_name);
2619 if (dev_name) {
2620 p2p->cfg->dev_name = os_strdup(dev_name);
2621 if (p2p->cfg->dev_name == NULL)
2622 return -1;
2623 } else
2624 p2p->cfg->dev_name = NULL;
2625 return 0;
2626}
2627
2628
2629int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
2630{
2631 os_free(p2p->cfg->manufacturer);
2632 p2p->cfg->manufacturer = NULL;
2633 if (manufacturer) {
2634 p2p->cfg->manufacturer = os_strdup(manufacturer);
2635 if (p2p->cfg->manufacturer == NULL)
2636 return -1;
2637 }
2638
2639 return 0;
2640}
2641
2642
2643int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
2644{
2645 os_free(p2p->cfg->model_name);
2646 p2p->cfg->model_name = NULL;
2647 if (model_name) {
2648 p2p->cfg->model_name = os_strdup(model_name);
2649 if (p2p->cfg->model_name == NULL)
2650 return -1;
2651 }
2652
2653 return 0;
2654}
2655
2656
2657int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
2658{
2659 os_free(p2p->cfg->model_number);
2660 p2p->cfg->model_number = NULL;
2661 if (model_number) {
2662 p2p->cfg->model_number = os_strdup(model_number);
2663 if (p2p->cfg->model_number == NULL)
2664 return -1;
2665 }
2666
2667 return 0;
2668}
2669
2670
2671int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
2672{
2673 os_free(p2p->cfg->serial_number);
2674 p2p->cfg->serial_number = NULL;
2675 if (serial_number) {
2676 p2p->cfg->serial_number = os_strdup(serial_number);
2677 if (p2p->cfg->serial_number == NULL)
2678 return -1;
2679 }
2680
2681 return 0;
2682}
2683
2684
2685void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
2686{
2687 p2p->cfg->config_methods = config_methods;
2688}
2689
2690
2691void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
2692{
2693 os_memcpy(p2p->cfg->uuid, uuid, 16);
2694}
2695
2696
2697int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
2698{
2699 os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
2700 return 0;
2701}
2702
2703
2704int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
2705 size_t num_dev_types)
2706{
2707 if (num_dev_types > P2P_SEC_DEVICE_TYPES)
2708 num_dev_types = P2P_SEC_DEVICE_TYPES;
2709 p2p->cfg->num_sec_dev_types = num_dev_types;
2710 os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
2711 return 0;
2712}
2713
2714
2715void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
2716{
2717 int i;
2718
2719 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2720 wpabuf_free(p2p->wps_vendor_ext[i]);
2721 p2p->wps_vendor_ext[i] = NULL;
2722 }
2723}
2724
2725
2726int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2727 const struct wpabuf *vendor_ext)
2728{
2729 int i;
2730
2731 if (vendor_ext == NULL)
2732 return -1;
2733
2734 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2735 if (p2p->wps_vendor_ext[i] == NULL)
2736 break;
2737 }
2738 if (i >= P2P_MAX_WPS_VENDOR_EXT)
2739 return -1;
2740
2741 p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
2742 if (p2p->wps_vendor_ext[i] == NULL)
2743 return -1;
2744
2745 return 0;
2746}
2747
2748
2749int p2p_set_country(struct p2p_data *p2p, const char *country)
2750{
2751 os_memcpy(p2p->cfg->country, country, 3);
2752 return 0;
2753}
2754
2755
2756void p2p_continue_find(struct p2p_data *p2p)
2757{
2758 struct p2p_device *dev;
Irfan Sherifff44b9c42012-06-13 11:09:23 -07002759#ifdef ANDROID_P2P
2760 int skip=1;
2761#endif
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002762 p2p_set_state(p2p, P2P_SEARCH);
2763 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
Irfan Sherifff44b9c42012-06-13 11:09:23 -07002764#ifdef ANDROID_P2P
2765 /* SD_FAIR_POLICY: We need to give chance to all devices in the device list
2766 * There may be a scenario, where a particular peer device have
2767 * not registered any query response. When we send a SD request to such device,
2768 * no response will be received. And if we continue to get probe responses from that device,
2769 * and if that device happens to be on top in our device list,
2770 * we will always continue to send SD requests always to that peer only.
2771 * We will not be able to send SD requests to other devices in that case.
2772 * This implementation keeps track of last serviced peer device.
2773 * And then takes the next one from the device list, in the next iteration.
2774 */
2775 if (p2p->sd_dev_list && p2p->sd_dev_list != &p2p->devices) {
2776 if(skip) {
2777 if ((&dev->list == p2p->sd_dev_list) ) {
2778 skip = 0;
2779 if (dev->list.next == &p2p->devices)
2780 p2p->sd_dev_list = NULL;
2781 }
2782 continue;
2783 }
2784 }
2785 p2p->sd_dev_list = &dev->list;
2786 wpa_printf(MSG_DEBUG, "P2P: ### Servicing %p dev->flags 0x%x SD schedule %s devaddr " MACSTR,
2787 p2p->sd_dev_list, dev->flags, dev->flags & P2P_DEV_SD_SCHEDULE ? "TRUE": "FALSE",
2788 MAC2STR(dev->info.p2p_device_addr));
2789#endif
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002790 if (dev->flags & P2P_DEV_SD_SCHEDULE) {
2791 if (p2p_start_sd(p2p, dev) == 0)
2792 return;
2793 else
2794 break;
2795 } else if (dev->req_config_methods &&
2796 !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
2797 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send "
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002798 "pending Provision Discovery Request to "
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002799 MACSTR " (config methods 0x%x)",
2800 MAC2STR(dev->info.p2p_device_addr),
2801 dev->req_config_methods);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002802 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002803 return;
2804 }
2805 }
2806
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08002807 p2p_listen_in_find(p2p, 1);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002808}
2809
2810
2811static void p2p_sd_cb(struct p2p_data *p2p, int success)
2812{
2813 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2814 "P2P: Service Discovery Query TX callback: success=%d",
2815 success);
2816 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2817
2818 if (!success) {
2819 if (p2p->sd_peer) {
2820 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
2821 p2p->sd_peer = NULL;
2822 }
2823 p2p_continue_find(p2p);
2824 return;
2825 }
2826
2827 if (p2p->sd_peer == NULL) {
2828 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2829 "P2P: No SD peer entry known");
2830 p2p_continue_find(p2p);
2831 return;
2832 }
2833
2834 /* Wait for response from the peer */
2835 p2p_set_state(p2p, P2P_SD_DURING_FIND);
2836 p2p_set_timeout(p2p, 0, 200000);
2837}
2838
Jouni Malinen75ecf522011-06-27 15:19:46 -07002839
2840/**
2841 * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
2842 * @p2p: P2P module context from p2p_init()
2843 */
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002844static void p2p_retry_pd(struct p2p_data *p2p)
Jouni Malinen75ecf522011-06-27 15:19:46 -07002845{
2846 struct p2p_device *dev;
2847
2848 if (p2p->state != P2P_IDLE)
2849 return;
2850
2851 /*
2852 * Retry the prov disc req attempt only for the peer that the user had
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08002853 * requested.
Jouni Malinen75ecf522011-06-27 15:19:46 -07002854 */
2855
2856 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2857 if (os_memcmp(p2p->pending_pd_devaddr,
2858 dev->info.p2p_device_addr, ETH_ALEN) != 0)
2859 continue;
2860 if (!dev->req_config_methods)
2861 continue;
Jouni Malinen75ecf522011-06-27 15:19:46 -07002862
2863 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send "
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002864 "pending Provision Discovery Request to "
Jouni Malinen75ecf522011-06-27 15:19:46 -07002865 MACSTR " (config methods 0x%x)",
2866 MAC2STR(dev->info.p2p_device_addr),
2867 dev->req_config_methods);
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08002868 p2p_send_prov_disc_req(p2p, dev,
2869 dev->flags & P2P_DEV_PD_FOR_JOIN, 0);
Jouni Malinen75ecf522011-06-27 15:19:46 -07002870 return;
2871 }
2872}
2873
2874
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002875static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
2876{
2877 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2878 "P2P: Provision Discovery Request TX callback: success=%d",
2879 success);
Jouni Malinen75ecf522011-06-27 15:19:46 -07002880
2881 /*
2882 * Postpone resetting the pending action state till after we actually
2883 * time out. This allows us to take some action like notifying any
2884 * interested parties about no response to the request.
2885 *
2886 * When the timer (below) goes off we check in IDLE, SEARCH, or
2887 * LISTEN_ONLY state, which are the only allowed states to issue a PD
2888 * requests in, if this was still pending and then raise notification.
2889 */
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002890
2891 if (!success) {
Jouni Malinen75ecf522011-06-27 15:19:46 -07002892 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2893
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002894 if (p2p->user_initiated_pd &&
2895 (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
2896 {
2897 /* Retry request from timeout to avoid busy loops */
2898 p2p->pending_action_state = P2P_PENDING_PD;
2899 p2p_set_timeout(p2p, 0, 50000);
2900 } else if (p2p->state != P2P_IDLE)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002901 p2p_continue_find(p2p);
Jouni Malinen75ecf522011-06-27 15:19:46 -07002902 else if (p2p->user_initiated_pd) {
2903 p2p->pending_action_state = P2P_PENDING_PD;
Irfan Sheriff1a2ce112012-10-30 22:22:52 -07002904#ifdef ANDROID_P2P
2905 p2p_set_timeout(p2p, 0, 350000);
2906#else
Jouni Malinen75ecf522011-06-27 15:19:46 -07002907 p2p_set_timeout(p2p, 0, 300000);
Irfan Sheriff1a2ce112012-10-30 22:22:52 -07002908#endif
Jouni Malinen75ecf522011-06-27 15:19:46 -07002909 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002910 return;
2911 }
2912
Jouni Malinen75ecf522011-06-27 15:19:46 -07002913 /*
2914 * This postponing, of resetting pending_action_state, needs to be
2915 * done only for user initiated PD requests and not internal ones.
2916 */
2917 if (p2p->user_initiated_pd)
2918 p2p->pending_action_state = P2P_PENDING_PD;
2919 else
2920 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2921
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002922 /* Wait for response from the peer */
2923 if (p2p->state == P2P_SEARCH)
2924 p2p_set_state(p2p, P2P_PD_DURING_FIND);
Irfan Sheriff1a2ce112012-10-30 22:22:52 -07002925#ifdef ANDROID_P2P
2926 p2p_set_timeout(p2p, 0, 350000);
2927#else
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002928 p2p_set_timeout(p2p, 0, 200000);
Irfan Sheriff1a2ce112012-10-30 22:22:52 -07002929#endif
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002930}
2931
2932
2933int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
Dmitry Shmidtf8623282013-02-20 14:34:59 -08002934 struct os_time *rx_time, int level, const u8 *ies,
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08002935 size_t ies_len)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002936{
Dmitry Shmidtf8623282013-02-20 14:34:59 -08002937 if (os_time_before(rx_time, &p2p->find_start)) {
2938 /*
2939 * The driver may have cached (e.g., in cfg80211 BSS table) the
2940 * scan results for relatively long time. To avoid reporting
2941 * stale information, update P2P peers only based on results
2942 * that have based on frames received after the last p2p_find
2943 * operation was started.
2944 */
2945 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Ignore old scan "
2946 "result for " MACSTR " (rx_time=%u.%06u)",
2947 MAC2STR(bssid), (unsigned int) rx_time->sec,
2948 (unsigned int) rx_time->usec);
2949 return 0;
2950 }
2951
2952 p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002953
2954 return 0;
2955}
2956
2957
2958void p2p_scan_res_handled(struct p2p_data *p2p)
2959{
2960 if (!p2p->p2p_scan_running) {
2961 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan was not "
2962 "running, but scan results received");
2963 }
2964 p2p->p2p_scan_running = 0;
2965 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2966
2967 if (p2p_run_after_scan(p2p))
2968 return;
2969 if (p2p->state == P2P_SEARCH)
2970 p2p_continue_find(p2p);
2971}
2972
2973
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08002974void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002975{
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002976 u8 *len;
2977
2978#ifdef CONFIG_WIFI_DISPLAY
2979 if (p2p->wfd_ie_probe_req)
2980 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
2981#endif /* CONFIG_WIFI_DISPLAY */
2982
2983 len = p2p_buf_add_ie_hdr(ies);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002984 p2p_buf_add_capability(ies, p2p->dev_capab &
2985 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08002986 if (dev_id)
2987 p2p_buf_add_device_id(ies, dev_id);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002988 if (p2p->cfg->reg_class && p2p->cfg->channel)
2989 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
2990 p2p->cfg->reg_class,
2991 p2p->cfg->channel);
2992 if (p2p->ext_listen_interval)
2993 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
2994 p2p->ext_listen_interval);
2995 /* TODO: p2p_buf_add_operating_channel() if GO */
2996 p2p_buf_update_ie_hdr(ies, len);
2997}
2998
2999
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003000size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
3001{
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07003002 size_t len = 100;
3003
3004#ifdef CONFIG_WIFI_DISPLAY
3005 if (p2p && p2p->wfd_ie_probe_req)
3006 len += wpabuf_len(p2p->wfd_ie_probe_req);
3007#endif /* CONFIG_WIFI_DISPLAY */
3008
3009 return len;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003010}
3011
3012
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003013int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
3014{
3015 return p2p_attr_text(p2p_ie, buf, end);
3016}
3017
3018
3019static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
3020{
3021 struct p2p_device *dev = p2p->go_neg_peer;
3022
3023 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3024 "P2P: GO Negotiation Request TX callback: success=%d",
3025 success);
3026
3027 if (dev == NULL) {
3028 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3029 "P2P: No pending GO Negotiation");
3030 return;
3031 }
3032
3033 if (success) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003034 if (dev->flags & P2P_DEV_USER_REJECTED) {
3035 p2p_set_state(p2p, P2P_IDLE);
3036 return;
3037 }
Dmitry Shmidt04949592012-07-19 12:16:46 -07003038 } else if (dev->go_neg_req_sent) {
3039 /* Cancel the increment from p2p_connect_send() on failure */
Dmitry Shmidt98f9e762012-05-30 11:18:46 -07003040 dev->go_neg_req_sent--;
3041 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003042
3043 if (!success &&
3044 (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
3045 !is_zero_ether_addr(dev->member_in_go_dev)) {
3046 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3047 "P2P: Peer " MACSTR " did not acknowledge request - "
3048 "try to use device discoverability through its GO",
3049 MAC2STR(dev->info.p2p_device_addr));
3050 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3051 p2p_send_dev_disc_req(p2p, dev);
3052 return;
3053 }
3054
3055 /*
3056 * Use P2P find, if needed, to find the other device from its listen
3057 * channel.
3058 */
3059 p2p_set_state(p2p, P2P_CONNECT);
Irfan Sheriff1a2ce112012-10-30 22:22:52 -07003060#ifdef ANDROID_P2P
3061 p2p_set_timeout(p2p, 0, 350000);
3062#else
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07003063 p2p_set_timeout(p2p, 0, success ? 200000 : 100000);
Irfan Sheriff1a2ce112012-10-30 22:22:52 -07003064#endif
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003065}
3066
3067
3068static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
3069{
3070 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3071 "P2P: GO Negotiation Response TX callback: success=%d",
3072 success);
3073 if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
3074 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3075 "P2P: Ignore TX callback event - GO Negotiation is "
3076 "not running anymore");
3077 return;
3078 }
3079 p2p_set_state(p2p, P2P_CONNECT);
Irfan Sheriff1a2ce112012-10-30 22:22:52 -07003080#ifdef ANDROID_P2P
3081 p2p_set_timeout(p2p, 0, 350000);
3082#else
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07003083 p2p_set_timeout(p2p, 0, 250000);
Irfan Sheriff1a2ce112012-10-30 22:22:52 -07003084#endif
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003085}
3086
3087
3088static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success)
3089{
3090 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3091 "P2P: GO Negotiation Response (failure) TX callback: "
3092 "success=%d", success);
3093 if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
3094 p2p_go_neg_failed(p2p, p2p->go_neg_peer,
3095 p2p->go_neg_peer->status);
3096 }
3097}
3098
3099
3100static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
3101 enum p2p_send_action_result result)
3102{
3103 struct p2p_device *dev;
3104
3105 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3106 "P2P: GO Negotiation Confirm TX callback: result=%d",
3107 result);
3108 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3109 if (result == P2P_SEND_ACTION_FAILED) {
3110 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3111 return;
3112 }
3113 if (result == P2P_SEND_ACTION_NO_ACK) {
3114 /*
3115 * It looks like the TX status for GO Negotiation Confirm is
3116 * often showing failure even when the peer has actually
3117 * received the frame. Since the peer may change channels
3118 * immediately after having received the frame, we may not see
3119 * an Ack for retries, so just dropping a single frame may
3120 * trigger this. To allow the group formation to succeed if the
3121 * peer did indeed receive the frame, continue regardless of
3122 * the TX status.
3123 */
3124 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3125 "P2P: Assume GO Negotiation Confirm TX was actually "
3126 "received by the peer even though Ack was not "
3127 "reported");
3128 }
3129
3130 dev = p2p->go_neg_peer;
3131 if (dev == NULL)
3132 return;
3133
3134 p2p_go_complete(p2p, dev);
3135}
3136
3137
3138void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3139 const u8 *src, const u8 *bssid,
3140 enum p2p_send_action_result result)
3141{
3142 enum p2p_pending_action_state state;
3143 int success;
3144
3145 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3146 "P2P: Action frame TX callback (state=%d freq=%u dst=" MACSTR
3147 " src=" MACSTR " bssid=" MACSTR " result=%d",
3148 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
3149 MAC2STR(bssid), result);
3150 success = result == P2P_SEND_ACTION_SUCCESS;
3151 state = p2p->pending_action_state;
3152 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3153 switch (state) {
3154 case P2P_NO_PENDING_ACTION:
3155 break;
3156 case P2P_PENDING_GO_NEG_REQUEST:
3157 p2p_go_neg_req_cb(p2p, success);
3158 break;
3159 case P2P_PENDING_GO_NEG_RESPONSE:
3160 p2p_go_neg_resp_cb(p2p, success);
3161 break;
3162 case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
3163 p2p_go_neg_resp_failure_cb(p2p, success);
3164 break;
3165 case P2P_PENDING_GO_NEG_CONFIRM:
3166 p2p_go_neg_conf_cb(p2p, result);
3167 break;
3168 case P2P_PENDING_SD:
3169 p2p_sd_cb(p2p, success);
3170 break;
3171 case P2P_PENDING_PD:
3172 p2p_prov_disc_cb(p2p, success);
3173 break;
3174 case P2P_PENDING_INVITATION_REQUEST:
3175 p2p_invitation_req_cb(p2p, success);
3176 break;
3177 case P2P_PENDING_INVITATION_RESPONSE:
3178 p2p_invitation_resp_cb(p2p, success);
3179 break;
3180 case P2P_PENDING_DEV_DISC_REQUEST:
3181 p2p_dev_disc_req_cb(p2p, success);
3182 break;
3183 case P2P_PENDING_DEV_DISC_RESPONSE:
3184 p2p_dev_disc_resp_cb(p2p, success);
3185 break;
3186 case P2P_PENDING_GO_DISC_REQ:
3187 p2p_go_disc_req_cb(p2p, success);
3188 break;
3189 }
3190}
3191
3192
3193void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3194 unsigned int duration)
3195{
3196 if (freq == p2p->pending_client_disc_freq) {
3197 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3198 "P2P: Client discoverability remain-awake completed");
3199 p2p->pending_client_disc_freq = 0;
3200 return;
3201 }
3202
3203 if (freq != p2p->pending_listen_freq) {
3204 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3205 "P2P: Unexpected listen callback for freq=%u "
3206 "duration=%u (pending_listen_freq=%u)",
3207 freq, duration, p2p->pending_listen_freq);
3208 return;
3209 }
3210
3211 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3212 "P2P: Starting Listen timeout(%u,%u) on freq=%u based on "
3213 "callback",
3214 p2p->pending_listen_sec, p2p->pending_listen_usec,
3215 p2p->pending_listen_freq);
3216 p2p->in_listen = 1;
3217 p2p->drv_in_listen = freq;
3218 if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3219 /*
3220 * Add 20 msec extra wait to avoid race condition with driver
3221 * remain-on-channel end event, i.e., give driver more time to
3222 * complete the operation before our timeout expires.
3223 */
3224 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3225 p2p->pending_listen_usec + 20000);
3226 }
3227
3228 p2p->pending_listen_freq = 0;
3229}
3230
3231
3232int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3233{
3234 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver ended Listen "
3235 "state (freq=%u)", freq);
3236 p2p->drv_in_listen = 0;
3237 if (p2p->in_listen)
3238 return 0; /* Internal timeout will trigger the next step */
3239
3240 if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3241 if (p2p->go_neg_peer->connect_reqs >= 120) {
3242 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3243 "P2P: Timeout on sending GO Negotiation "
3244 "Request without getting response");
3245 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3246 return 0;
3247 }
3248
3249 p2p_set_state(p2p, P2P_CONNECT);
3250 p2p_connect_send(p2p, p2p->go_neg_peer);
3251 return 1;
3252 } else if (p2p->state == P2P_SEARCH) {
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08003253 if (p2p->p2p_scan_running) {
3254 /*
3255 * Search is already in progress. This can happen if
3256 * an Action frame RX is reported immediately after
3257 * the end of a remain-on-channel operation and the
3258 * response frame to that is sent using an offchannel
3259 * operation while in p2p_find. Avoid an attempt to
3260 * restart a scan here.
3261 */
3262 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan "
3263 "already in progress - do not try to start a "
3264 "new one");
3265 return 1;
3266 }
Dmitry Shmidt04949592012-07-19 12:16:46 -07003267 if (p2p->pending_listen_freq) {
3268 /*
3269 * Better wait a bit if the driver is unable to start
3270 * offchannel operation for some reason. p2p_search()
3271 * will be started from internal timeout.
3272 */
3273 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Listen "
3274 "operation did not seem to start - delay "
3275 "search phase to avoid busy loop");
3276 p2p_set_timeout(p2p, 0, 100000);
3277 return 1;
3278 }
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07003279 if (p2p->search_delay) {
3280 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay "
3281 "search operation by %u ms",
3282 p2p->search_delay);
3283 p2p_set_timeout(p2p, p2p->search_delay / 1000,
3284 (p2p->search_delay % 1000) * 1000);
3285 return 1;
3286 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003287 p2p_search(p2p);
3288 return 1;
3289 }
3290
3291 return 0;
3292}
3293
3294
3295static void p2p_timeout_connect(struct p2p_data *p2p)
3296{
3297 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
Dmitry Shmidt04949592012-07-19 12:16:46 -07003298 if (p2p->go_neg_peer &&
3299 (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3300 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Wait for GO "
3301 "Negotiation Confirm timed out - assume GO "
3302 "Negotiation failed");
3303 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3304 return;
3305 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003306 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08003307 p2p_listen_in_find(p2p, 0);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003308}
3309
3310
3311static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3312{
3313 if (p2p->go_neg_peer) {
3314 if (p2p->drv_in_listen) {
3315 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is "
3316 "still in Listen state; wait for it to "
3317 "complete");
3318 return;
3319 }
3320
3321 if (p2p->go_neg_peer->connect_reqs >= 120) {
3322 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3323 "P2P: Timeout on sending GO Negotiation "
3324 "Request without getting response");
3325 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3326 return;
3327 }
3328
3329 p2p_set_state(p2p, P2P_CONNECT);
3330 p2p_connect_send(p2p, p2p->go_neg_peer);
3331 } else
3332 p2p_set_state(p2p, P2P_IDLE);
3333}
3334
3335
3336static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3337{
3338 /*
3339 * TODO: could remain constantly in Listen state for some time if there
3340 * are no other concurrent uses for the radio. For now, go to listen
3341 * state once per second to give other uses a chance to use the radio.
3342 */
3343 p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003344 p2p_set_timeout(p2p, 0, 500000);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003345}
3346
3347
3348static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3349{
3350 struct p2p_device *dev = p2p->go_neg_peer;
3351
3352 if (dev == NULL) {
3353 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3354 "P2P: Unknown GO Neg peer - stop GO Neg wait");
3355 return;
3356 }
3357
3358 dev->wait_count++;
3359 if (dev->wait_count >= 120) {
3360 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3361 "P2P: Timeout on waiting peer to become ready for GO "
3362 "Negotiation");
3363 p2p_go_neg_failed(p2p, dev, -1);
3364 return;
3365 }
3366
3367 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3368 "P2P: Go to Listen state while waiting for the peer to become "
3369 "ready for GO Negotiation");
3370 p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08003371 p2p_listen_in_find(p2p, 0);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003372}
3373
3374
3375static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3376{
3377 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3378 "P2P: Service Discovery Query timeout");
3379 if (p2p->sd_peer) {
3380 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3381 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
3382 p2p->sd_peer = NULL;
3383 }
3384 p2p_continue_find(p2p);
3385}
3386
3387
3388static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3389{
3390 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3391 "P2P: Provision Discovery Request timeout");
3392 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3393 p2p_continue_find(p2p);
3394}
3395
3396
Jouni Malinen75ecf522011-06-27 15:19:46 -07003397static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3398{
3399 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3400
3401 /*
3402 * For user initiated PD requests that we have not gotten any responses
3403 * for while in IDLE state, we retry them a couple of times before
3404 * giving up.
3405 */
3406 if (!p2p->user_initiated_pd)
3407 return;
3408
3409 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3410 "P2P: User initiated Provision Discovery Request timeout");
3411
3412 if (p2p->pd_retries) {
3413 p2p->pd_retries--;
3414 p2p_retry_pd(p2p);
3415 } else {
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08003416 struct p2p_device *dev;
3417 int for_join = 0;
3418
3419 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3420 if (os_memcmp(p2p->pending_pd_devaddr,
3421 dev->info.p2p_device_addr, ETH_ALEN) != 0)
3422 continue;
3423 if (dev->req_config_methods &&
3424 (dev->flags & P2P_DEV_PD_FOR_JOIN))
3425 for_join = 1;
3426 }
3427
Jouni Malinen75ecf522011-06-27 15:19:46 -07003428 if (p2p->cfg->prov_disc_fail)
3429 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
3430 p2p->pending_pd_devaddr,
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08003431 for_join ?
3432 P2P_PROV_DISC_TIMEOUT_JOIN :
Jouni Malinen75ecf522011-06-27 15:19:46 -07003433 P2P_PROV_DISC_TIMEOUT);
3434 p2p_reset_pending_pd(p2p);
3435 }
3436}
3437
3438
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003439static void p2p_timeout_invite(struct p2p_data *p2p)
3440{
3441 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3442 p2p_set_state(p2p, P2P_INVITE_LISTEN);
3443 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
3444 /*
3445 * Better remain on operating channel instead of listen channel
3446 * when running a group.
3447 */
3448 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Inviting in "
3449 "active GO role - wait on operating channel");
3450 p2p_set_timeout(p2p, 0, 100000);
3451 return;
3452 }
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08003453 p2p_listen_in_find(p2p, 0);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003454}
3455
3456
3457static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3458{
3459 if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3460 p2p_set_state(p2p, P2P_INVITE);
3461 p2p_invite_send(p2p, p2p->invite_peer,
3462 p2p->invite_go_dev_addr);
3463 } else {
3464 if (p2p->invite_peer) {
3465 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3466 "P2P: Invitation Request retry limit reached");
3467 if (p2p->cfg->invitation_result)
3468 p2p->cfg->invitation_result(
3469 p2p->cfg->cb_ctx, -1, NULL);
3470 }
3471 p2p_set_state(p2p, P2P_IDLE);
3472 }
3473}
3474
3475
3476static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3477{
3478 struct p2p_data *p2p = eloop_ctx;
3479
3480 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Timeout (state=%s)",
3481 p2p_state_txt(p2p->state));
3482
3483 p2p->in_listen = 0;
3484
3485 switch (p2p->state) {
3486 case P2P_IDLE:
Jouni Malinen75ecf522011-06-27 15:19:46 -07003487 /* Check if we timed out waiting for PD req */
3488 if (p2p->pending_action_state == P2P_PENDING_PD)
3489 p2p_timeout_prov_disc_req(p2p);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003490 break;
3491 case P2P_SEARCH:
Jouni Malinen75ecf522011-06-27 15:19:46 -07003492 /* Check if we timed out waiting for PD req */
3493 if (p2p->pending_action_state == P2P_PENDING_PD)
3494 p2p_timeout_prov_disc_req(p2p);
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07003495 if (p2p->search_delay && !p2p->in_search_delay) {
3496 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay "
3497 "search operation by %u ms",
3498 p2p->search_delay);
3499 p2p->in_search_delay = 1;
3500 p2p_set_timeout(p2p, p2p->search_delay / 1000,
3501 (p2p->search_delay % 1000) * 1000);
3502 break;
3503 }
3504 p2p->in_search_delay = 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003505 p2p_search(p2p);
3506 break;
3507 case P2P_CONNECT:
3508 p2p_timeout_connect(p2p);
3509 break;
3510 case P2P_CONNECT_LISTEN:
3511 p2p_timeout_connect_listen(p2p);
3512 break;
3513 case P2P_GO_NEG:
3514 break;
3515 case P2P_LISTEN_ONLY:
Jouni Malinen75ecf522011-06-27 15:19:46 -07003516 /* Check if we timed out waiting for PD req */
3517 if (p2p->pending_action_state == P2P_PENDING_PD)
3518 p2p_timeout_prov_disc_req(p2p);
3519
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003520 if (p2p->ext_listen_only) {
3521 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3522 "P2P: Extended Listen Timing - Listen State "
3523 "completed");
3524 p2p->ext_listen_only = 0;
3525 p2p_set_state(p2p, P2P_IDLE);
3526 }
3527 break;
3528 case P2P_WAIT_PEER_CONNECT:
3529 p2p_timeout_wait_peer_connect(p2p);
3530 break;
3531 case P2P_WAIT_PEER_IDLE:
3532 p2p_timeout_wait_peer_idle(p2p);
3533 break;
3534 case P2P_SD_DURING_FIND:
3535 p2p_timeout_sd_during_find(p2p);
3536 break;
3537 case P2P_PROVISIONING:
3538 break;
3539 case P2P_PD_DURING_FIND:
3540 p2p_timeout_prov_disc_during_find(p2p);
3541 break;
3542 case P2P_INVITE:
3543 p2p_timeout_invite(p2p);
3544 break;
3545 case P2P_INVITE_LISTEN:
3546 p2p_timeout_invite_listen(p2p);
3547 break;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003548 case P2P_SEARCH_WHEN_READY:
3549 break;
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07003550 case P2P_CONTINUE_SEARCH_WHEN_READY:
3551 break;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003552 }
3553}
3554
3555
3556int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
3557{
3558 struct p2p_device *dev;
3559
3560 dev = p2p_get_device(p2p, peer_addr);
3561 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Local request to reject "
3562 "connection attempts by peer " MACSTR, MAC2STR(peer_addr));
3563 if (dev == NULL) {
3564 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer " MACSTR
3565 " unknown", MAC2STR(peer_addr));
3566 return -1;
3567 }
3568 dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
3569 dev->flags |= P2P_DEV_USER_REJECTED;
3570 return 0;
3571}
3572
3573
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003574const char * p2p_wps_method_text(enum p2p_wps_method method)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003575{
3576 switch (method) {
3577 case WPS_NOT_READY:
3578 return "not-ready";
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003579 case WPS_PIN_DISPLAY:
3580 return "Display";
3581 case WPS_PIN_KEYPAD:
3582 return "Keypad";
3583 case WPS_PBC:
3584 return "PBC";
3585 }
3586
3587 return "??";
3588}
3589
3590
3591static const char * p2p_go_state_text(enum p2p_go_state go_state)
3592{
3593 switch (go_state) {
3594 case UNKNOWN_GO:
3595 return "unknown";
3596 case LOCAL_GO:
3597 return "local";
3598 case REMOTE_GO:
3599 return "remote";
3600 }
3601
3602 return "??";
3603}
3604
3605
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003606const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
3607 const u8 *addr, int next)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003608{
3609 struct p2p_device *dev;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003610
3611 if (addr)
3612 dev = p2p_get_device(p2p, addr);
3613 else
3614 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3615
3616 if (dev && next) {
3617 dev = dl_list_first(&dev->list, struct p2p_device, list);
3618 if (&dev->list == &p2p->devices)
3619 dev = NULL;
3620 }
3621
3622 if (dev == NULL)
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003623 return NULL;
3624
3625 return &dev->info;
3626}
3627
3628
3629int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
3630 char *buf, size_t buflen)
3631{
3632 struct p2p_device *dev;
3633 int res;
3634 char *pos, *end;
3635 struct os_time now;
3636
3637 if (info == NULL)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003638 return -1;
3639
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003640 dev = (struct p2p_device *) (((u8 *) info) -
3641 offsetof(struct p2p_device, info));
3642
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003643 pos = buf;
3644 end = buf + buflen;
3645
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003646 os_get_time(&now);
3647 res = os_snprintf(pos, end - pos,
3648 "age=%d\n"
3649 "listen_freq=%d\n"
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003650 "wps_method=%s\n"
3651 "interface_addr=" MACSTR "\n"
3652 "member_in_go_dev=" MACSTR "\n"
3653 "member_in_go_iface=" MACSTR "\n"
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003654 "go_neg_req_sent=%d\n"
3655 "go_state=%s\n"
3656 "dialog_token=%u\n"
3657 "intended_addr=" MACSTR "\n"
3658 "country=%c%c\n"
3659 "oper_freq=%d\n"
3660 "req_config_methods=0x%x\n"
3661 "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
3662 "status=%d\n"
3663 "wait_count=%u\n"
3664 "invitation_reqs=%u\n",
3665 (int) (now.sec - dev->last_seen.sec),
3666 dev->listen_freq,
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003667 p2p_wps_method_text(dev->wps_method),
3668 MAC2STR(dev->interface_addr),
3669 MAC2STR(dev->member_in_go_dev),
3670 MAC2STR(dev->member_in_go_iface),
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003671 dev->go_neg_req_sent,
3672 p2p_go_state_text(dev->go_state),
3673 dev->dialog_token,
3674 MAC2STR(dev->intended_addr),
3675 dev->country[0] ? dev->country[0] : '_',
3676 dev->country[1] ? dev->country[1] : '_',
3677 dev->oper_freq,
3678 dev->req_config_methods,
3679 dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
3680 "[PROBE_REQ_ONLY]" : "",
3681 dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
3682 dev->flags & P2P_DEV_NOT_YET_READY ?
3683 "[NOT_YET_READY]" : "",
3684 dev->flags & P2P_DEV_SD_INFO ? "[SD_INFO]" : "",
3685 dev->flags & P2P_DEV_SD_SCHEDULE ? "[SD_SCHEDULE]" :
3686 "",
3687 dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
3688 "[PD_PEER_DISPLAY]" : "",
3689 dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
3690 "[PD_PEER_KEYPAD]" : "",
3691 dev->flags & P2P_DEV_USER_REJECTED ?
3692 "[USER_REJECTED]" : "",
3693 dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
3694 "[PEER_WAITING_RESPONSE]" : "",
3695 dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
3696 "[PREFER_PERSISTENT_GROUP]" : "",
3697 dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
3698 "[WAIT_GO_NEG_RESPONSE]" : "",
3699 dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
3700 "[WAIT_GO_NEG_CONFIRM]" : "",
3701 dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
3702 "[GROUP_CLIENT_ONLY]" : "",
3703 dev->flags & P2P_DEV_FORCE_FREQ ?
3704 "[FORCE_FREQ]" : "",
3705 dev->flags & P2P_DEV_PD_FOR_JOIN ?
3706 "[PD_FOR_JOIN]" : "",
3707 dev->status,
3708 dev->wait_count,
3709 dev->invitation_reqs);
3710 if (res < 0 || res >= end - pos)
3711 return pos - buf;
3712 pos += res;
3713
3714 if (dev->ext_listen_period) {
3715 res = os_snprintf(pos, end - pos,
3716 "ext_listen_period=%u\n"
3717 "ext_listen_interval=%u\n",
3718 dev->ext_listen_period,
3719 dev->ext_listen_interval);
3720 if (res < 0 || res >= end - pos)
3721 return pos - buf;
3722 pos += res;
3723 }
3724
3725 if (dev->oper_ssid_len) {
3726 res = os_snprintf(pos, end - pos,
3727 "oper_ssid=%s\n",
3728 wpa_ssid_txt(dev->oper_ssid,
3729 dev->oper_ssid_len));
3730 if (res < 0 || res >= end - pos)
3731 return pos - buf;
3732 pos += res;
3733 }
3734
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07003735#ifdef CONFIG_WIFI_DISPLAY
3736 if (dev->info.wfd_subelems) {
3737 res = os_snprintf(pos, end - pos, "wfd_subelems=");
3738 if (res < 0 || res >= end - pos)
3739 return pos - buf;
3740 pos += res;
3741
3742 pos += wpa_snprintf_hex(pos, end - pos,
3743 wpabuf_head(dev->info.wfd_subelems),
3744 wpabuf_len(dev->info.wfd_subelems));
3745
3746 res = os_snprintf(pos, end - pos, "\n");
3747 if (res < 0 || res >= end - pos)
3748 return pos - buf;
3749 pos += res;
3750 }
3751#endif /* CONFIG_WIFI_DISPLAY */
3752
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003753 return pos - buf;
3754}
3755
3756
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003757int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
3758{
3759 return p2p_get_device(p2p, addr) != NULL;
3760}
3761
3762
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003763void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
3764{
3765 if (enabled) {
3766 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client "
3767 "discoverability enabled");
3768 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3769 } else {
3770 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client "
3771 "discoverability disabled");
3772 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3773 }
3774}
3775
3776
3777static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
3778 u32 duration2, u32 interval2)
3779{
3780 struct wpabuf *req;
3781 struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
3782 u8 *len;
3783
3784 req = wpabuf_alloc(100);
3785 if (req == NULL)
3786 return NULL;
3787
3788 if (duration1 || interval1) {
3789 os_memset(&desc1, 0, sizeof(desc1));
3790 desc1.count_type = 1;
3791 desc1.duration = duration1;
3792 desc1.interval = interval1;
3793 ptr1 = &desc1;
3794
3795 if (duration2 || interval2) {
3796 os_memset(&desc2, 0, sizeof(desc2));
3797 desc2.count_type = 2;
3798 desc2.duration = duration2;
3799 desc2.interval = interval2;
3800 ptr2 = &desc2;
3801 }
3802 }
3803
3804 p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
3805 len = p2p_buf_add_ie_hdr(req);
3806 p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
3807 p2p_buf_update_ie_hdr(req, len);
3808
3809 return req;
3810}
3811
3812
3813int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
3814 const u8 *own_interface_addr, unsigned int freq,
3815 u32 duration1, u32 interval1, u32 duration2,
3816 u32 interval2)
3817{
3818 struct wpabuf *req;
3819
3820 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send Presence Request to "
3821 "GO " MACSTR " (own interface " MACSTR ") freq=%u dur1=%u "
3822 "int1=%u dur2=%u int2=%u",
3823 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
3824 freq, duration1, interval1, duration2, interval2);
3825
3826 req = p2p_build_presence_req(duration1, interval1, duration2,
3827 interval2);
3828 if (req == NULL)
3829 return -1;
3830
3831 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3832 if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
3833 go_interface_addr,
3834 wpabuf_head(req), wpabuf_len(req), 200) < 0) {
3835 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3836 "P2P: Failed to send Action frame");
3837 }
3838 wpabuf_free(req);
3839
3840 return 0;
3841}
3842
3843
3844static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
3845 size_t noa_len, u8 dialog_token)
3846{
3847 struct wpabuf *resp;
3848 u8 *len;
3849
3850 resp = wpabuf_alloc(100 + noa_len);
3851 if (resp == NULL)
3852 return NULL;
3853
3854 p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
3855 len = p2p_buf_add_ie_hdr(resp);
3856 p2p_buf_add_status(resp, status);
3857 if (noa) {
3858 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
3859 wpabuf_put_le16(resp, noa_len);
3860 wpabuf_put_data(resp, noa, noa_len);
3861 } else
3862 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
3863 p2p_buf_update_ie_hdr(resp, len);
3864
3865 return resp;
3866}
3867
3868
3869static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
3870 const u8 *sa, const u8 *data, size_t len,
3871 int rx_freq)
3872{
3873 struct p2p_message msg;
3874 u8 status;
3875 struct wpabuf *resp;
3876 size_t g;
3877 struct p2p_group *group = NULL;
3878 int parsed = 0;
3879 u8 noa[50];
3880 int noa_len;
3881
3882 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3883 "P2P: Received P2P Action - P2P Presence Request");
3884
3885 for (g = 0; g < p2p->num_groups; g++) {
3886 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
3887 ETH_ALEN) == 0) {
3888 group = p2p->groups[g];
3889 break;
3890 }
3891 }
3892 if (group == NULL) {
3893 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3894 "P2P: Ignore P2P Presence Request for unknown group "
3895 MACSTR, MAC2STR(da));
3896 return;
3897 }
3898
3899 if (p2p_parse(data, len, &msg) < 0) {
3900 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3901 "P2P: Failed to parse P2P Presence Request");
3902 status = P2P_SC_FAIL_INVALID_PARAMS;
3903 goto fail;
3904 }
3905 parsed = 1;
3906
3907 if (msg.noa == NULL) {
3908 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3909 "P2P: No NoA attribute in P2P Presence Request");
3910 status = P2P_SC_FAIL_INVALID_PARAMS;
3911 goto fail;
3912 }
3913
3914 status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
3915
3916fail:
3917 if (p2p->cfg->get_noa)
3918 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
3919 sizeof(noa));
3920 else
3921 noa_len = -1;
3922 resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
3923 noa_len > 0 ? noa_len : 0,
3924 msg.dialog_token);
3925 if (parsed)
3926 p2p_parse_free(&msg);
3927 if (resp == NULL)
3928 return;
3929
3930 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3931 if (p2p_send_action(p2p, rx_freq, sa, da, da,
3932 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
3933 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3934 "P2P: Failed to send Action frame");
3935 }
3936 wpabuf_free(resp);
3937}
3938
3939
3940static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
3941 const u8 *sa, const u8 *data, size_t len)
3942{
3943 struct p2p_message msg;
3944
3945 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3946 "P2P: Received P2P Action - P2P Presence Response");
3947
3948 if (p2p_parse(data, len, &msg) < 0) {
3949 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3950 "P2P: Failed to parse P2P Presence Response");
3951 return;
3952 }
3953
3954 if (msg.status == NULL || msg.noa == NULL) {
3955 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3956 "P2P: No Status or NoA attribute in P2P Presence "
3957 "Response");
3958 p2p_parse_free(&msg);
3959 return;
3960 }
3961
3962 if (*msg.status) {
3963 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3964 "P2P: P2P Presence Request was rejected: status %u",
3965 *msg.status);
3966 p2p_parse_free(&msg);
3967 return;
3968 }
3969
3970 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3971 "P2P: P2P Presence Request was accepted");
3972 wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
3973 msg.noa, msg.noa_len);
3974 /* TODO: process NoA */
3975 p2p_parse_free(&msg);
3976}
3977
3978
3979static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
3980{
3981 struct p2p_data *p2p = eloop_ctx;
3982
3983 if (p2p->ext_listen_interval) {
3984 /* Schedule next extended listen timeout */
3985 eloop_register_timeout(p2p->ext_listen_interval_sec,
3986 p2p->ext_listen_interval_usec,
3987 p2p_ext_listen_timeout, p2p, NULL);
3988 }
3989
3990 if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
3991 /*
3992 * This should not really happen, but it looks like the Listen
3993 * command may fail is something else (e.g., a scan) was
3994 * running at an inconvenient time. As a workaround, allow new
3995 * Extended Listen operation to be started.
3996 */
3997 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Previous "
3998 "Extended Listen operation had not been completed - "
3999 "try again");
4000 p2p->ext_listen_only = 0;
4001 p2p_set_state(p2p, P2P_IDLE);
4002 }
4003
4004 if (p2p->state != P2P_IDLE) {
4005 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip Extended "
4006 "Listen timeout in active state (%s)",
4007 p2p_state_txt(p2p->state));
4008 return;
4009 }
4010
4011 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Extended Listen timeout");
4012 p2p->ext_listen_only = 1;
4013 if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
4014 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start "
4015 "Listen state for Extended Listen Timing");
4016 p2p->ext_listen_only = 0;
4017 }
4018}
4019
4020
4021int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
4022 unsigned int interval)
4023{
4024 if (period > 65535 || interval > 65535 || period > interval ||
4025 (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
4026 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
4027 "P2P: Invalid Extended Listen Timing request: "
4028 "period=%u interval=%u", period, interval);
4029 return -1;
4030 }
4031
4032 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
4033
4034 if (interval == 0) {
4035 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
4036 "P2P: Disabling Extended Listen Timing");
4037 p2p->ext_listen_period = 0;
4038 p2p->ext_listen_interval = 0;
4039 return 0;
4040 }
4041
4042 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
4043 "P2P: Enabling Extended Listen Timing: period %u msec, "
4044 "interval %u msec", period, interval);
4045 p2p->ext_listen_period = period;
4046 p2p->ext_listen_interval = interval;
4047 p2p->ext_listen_interval_sec = interval / 1000;
4048 p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
4049
4050 eloop_register_timeout(p2p->ext_listen_interval_sec,
4051 p2p->ext_listen_interval_usec,
4052 p2p_ext_listen_timeout, p2p, NULL);
4053
4054 return 0;
4055}
4056
4057
4058void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4059 const u8 *ie, size_t ie_len)
4060{
4061 struct p2p_message msg;
4062
4063 if (bssid == NULL || ie == NULL)
4064 return;
4065
4066 os_memset(&msg, 0, sizeof(msg));
4067 if (p2p_parse_ies(ie, ie_len, &msg))
4068 return;
4069 if (msg.minor_reason_code == NULL)
4070 return;
4071
4072 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO,
4073 "P2P: Deauthentication notification BSSID " MACSTR
4074 " reason_code=%u minor_reason_code=%u",
4075 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4076
4077 p2p_parse_free(&msg);
4078}
4079
4080
4081void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4082 const u8 *ie, size_t ie_len)
4083{
4084 struct p2p_message msg;
4085
4086 if (bssid == NULL || ie == NULL)
4087 return;
4088
4089 os_memset(&msg, 0, sizeof(msg));
4090 if (p2p_parse_ies(ie, ie_len, &msg))
4091 return;
4092 if (msg.minor_reason_code == NULL)
4093 return;
4094
4095 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO,
4096 "P2P: Disassociation notification BSSID " MACSTR
4097 " reason_code=%u minor_reason_code=%u",
4098 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4099
4100 p2p_parse_free(&msg);
4101}
4102
4103
4104void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
4105{
4106 if (enabled) {
4107 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P "
4108 "Device operations enabled");
4109 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
4110 } else {
4111 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P "
4112 "Device operations disabled");
4113 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
4114 }
4115}
4116
4117
4118int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel)
4119{
4120 if (p2p_channel_to_freq(p2p->cfg->country, reg_class, channel) < 0)
4121 return -1;
4122
4123 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Set Listen channel: "
4124 "reg_class %u channel %u", reg_class, channel);
4125 p2p->cfg->reg_class = reg_class;
4126 p2p->cfg->channel = channel;
4127
4128 return 0;
4129}
4130
4131
4132int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
4133{
4134 wpa_hexdump_ascii(MSG_DEBUG, "P2P: New SSID postfix", postfix, len);
4135 if (postfix == NULL) {
4136 p2p->cfg->ssid_postfix_len = 0;
4137 return 0;
4138 }
4139 if (len > sizeof(p2p->cfg->ssid_postfix))
4140 return -1;
4141 os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
4142 p2p->cfg->ssid_postfix_len = len;
4143 return 0;
4144}
4145
4146
Jouni Malinen75ecf522011-06-27 15:19:46 -07004147int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
4148 int cfg_op_channel)
4149{
4150 if (p2p_channel_to_freq(p2p->cfg->country, op_reg_class, op_channel)
4151 < 0)
4152 return -1;
4153
4154 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, "P2P: Set Operating channel: "
4155 "reg_class %u channel %u", op_reg_class, op_channel);
4156 p2p->cfg->op_reg_class = op_reg_class;
4157 p2p->cfg->op_channel = op_channel;
4158 p2p->cfg->cfg_op_channel = cfg_op_channel;
4159 return 0;
4160}
4161
4162
Dmitry Shmidt04949592012-07-19 12:16:46 -07004163int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
4164 const struct p2p_channel *pref_chan)
4165{
4166 struct p2p_channel *n;
4167
4168 if (pref_chan) {
4169 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
4170 if (n == NULL)
4171 return -1;
4172 os_memcpy(n, pref_chan,
4173 num_pref_chan * sizeof(struct p2p_channel));
4174 } else
4175 n = NULL;
4176
4177 os_free(p2p->cfg->pref_chan);
4178 p2p->cfg->pref_chan = n;
4179 p2p->cfg->num_pref_chan = num_pref_chan;
4180
4181 return 0;
4182}
4183
4184
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004185int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4186 u8 *iface_addr)
4187{
4188 struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4189 if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4190 return -1;
4191 os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4192 return 0;
4193}
4194
4195
4196int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4197 u8 *dev_addr)
4198{
4199 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4200 if (dev == NULL)
4201 return -1;
4202 os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4203 return 0;
4204}
4205
4206
4207void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4208{
4209 os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4210 if (is_zero_ether_addr(p2p->peer_filter))
4211 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Disable peer "
4212 "filter");
4213 else
4214 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Enable peer "
4215 "filter for " MACSTR, MAC2STR(p2p->peer_filter));
4216}
4217
4218
4219void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4220{
4221 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Cross connection %s",
4222 enabled ? "enabled" : "disabled");
4223 if (p2p->cross_connect == enabled)
4224 return;
4225 p2p->cross_connect = enabled;
4226 /* TODO: may need to tear down any action group where we are GO(?) */
4227}
4228
4229
4230int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4231{
4232 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4233 if (dev == NULL)
4234 return -1;
4235 if (dev->oper_freq <= 0)
4236 return -1;
4237 return dev->oper_freq;
4238}
4239
4240
4241void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4242{
4243 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Intra BSS distribution %s",
4244 enabled ? "enabled" : "disabled");
4245 p2p->cfg->p2p_intra_bss = enabled;
4246}
4247
4248
4249void p2p_update_channel_list(struct p2p_data *p2p, struct p2p_channels *chan)
4250{
4251 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update channel list");
4252 os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4253}
4254
4255
4256int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4257 const u8 *src, const u8 *bssid, const u8 *buf,
4258 size_t len, unsigned int wait_time)
4259{
4260 if (p2p->p2p_scan_running) {
4261 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay Action "
4262 "frame TX until p2p_scan completes");
4263 if (p2p->after_scan_tx) {
4264 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped "
4265 "previous pending Action frame TX");
4266 os_free(p2p->after_scan_tx);
4267 }
4268 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4269 len);
4270 if (p2p->after_scan_tx == NULL)
4271 return -1;
4272 p2p->after_scan_tx->freq = freq;
4273 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4274 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4275 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4276 p2p->after_scan_tx->len = len;
4277 p2p->after_scan_tx->wait_time = wait_time;
4278 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4279 return 0;
4280 }
4281
4282 return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4283 buf, len, wait_time);
4284}
4285
4286
4287void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4288 int freq_overall)
4289{
4290 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Best channel: 2.4 GHz: %d,"
4291 " 5 GHz: %d, overall: %d", freq_24, freq_5, freq_overall);
4292 p2p->best_freq_24 = freq_24;
4293 p2p->best_freq_5 = freq_5;
4294 p2p->best_freq_overall = freq_overall;
4295}
4296
4297
4298const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4299{
4300 if (p2p == NULL || p2p->go_neg_peer == NULL)
4301 return NULL;
4302 return p2p->go_neg_peer->info.p2p_device_addr;
4303}
4304
4305
4306const struct p2p_peer_info *
4307p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4308{
4309 struct p2p_device *dev;
4310
4311 if (addr) {
4312 dev = p2p_get_device(p2p, addr);
4313 if (!dev)
4314 return NULL;
4315
4316 if (!next) {
4317 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4318 return NULL;
4319
4320 return &dev->info;
4321 } else {
4322 do {
4323 dev = dl_list_first(&dev->list,
4324 struct p2p_device,
4325 list);
4326 if (&dev->list == &p2p->devices)
4327 return NULL;
4328 } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4329 }
4330 } else {
4331 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4332 if (!dev)
4333 return NULL;
4334 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4335 dev = dl_list_first(&dev->list,
4336 struct p2p_device,
4337 list);
4338 if (&dev->list == &p2p->devices)
4339 return NULL;
4340 }
4341 }
4342
4343 return &dev->info;
4344}
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08004345
4346#ifdef ANDROID_P2P
4347int p2p_search_in_progress(struct p2p_data *p2p)
4348{
4349 if (p2p == NULL)
4350 return 0;
4351
4352 return p2p->state == P2P_SEARCH;
4353}
4354#endif
4355
4356int p2p_in_progress(struct p2p_data *p2p)
4357{
4358 if (p2p == NULL)
4359 return 0;
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07004360 if (p2p->state == P2P_SEARCH || p2p->state == P2P_SEARCH_WHEN_READY ||
4361 p2p->state == P2P_CONTINUE_SEARCH_WHEN_READY)
4362 return 2;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08004363 return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
4364}
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07004365
4366
4367void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
4368 u8 client_timeout)
4369{
4370 if (p2p) {
4371 p2p->go_timeout = go_timeout;
4372 p2p->client_timeout = client_timeout;
4373 }
4374}
4375
4376
4377void p2p_increase_search_delay(struct p2p_data *p2p, unsigned int delay)
4378{
4379 if (p2p && p2p->search_delay < delay)
4380 p2p->search_delay = delay;
4381}
4382
4383
4384#ifdef CONFIG_WIFI_DISPLAY
4385
4386static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
4387{
4388 size_t g;
4389 struct p2p_group *group;
4390
4391 for (g = 0; g < p2p->num_groups; g++) {
4392 group = p2p->groups[g];
4393 p2p_group_update_ies(group);
4394 }
4395}
4396
4397
4398int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
4399{
4400 wpabuf_free(p2p->wfd_ie_beacon);
4401 p2p->wfd_ie_beacon = ie;
4402 p2p_update_wfd_ie_groups(p2p);
4403 return 0;
4404}
4405
4406
4407int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
4408{
4409 wpabuf_free(p2p->wfd_ie_probe_req);
4410 p2p->wfd_ie_probe_req = ie;
4411 return 0;
4412}
4413
4414
4415int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
4416{
4417 wpabuf_free(p2p->wfd_ie_probe_resp);
4418 p2p->wfd_ie_probe_resp = ie;
4419 p2p_update_wfd_ie_groups(p2p);
4420 return 0;
4421}
4422
4423
4424int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
4425{
4426 wpabuf_free(p2p->wfd_ie_assoc_req);
4427 p2p->wfd_ie_assoc_req = ie;
4428 return 0;
4429}
4430
4431
4432int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
4433{
4434 wpabuf_free(p2p->wfd_ie_invitation);
4435 p2p->wfd_ie_invitation = ie;
4436 return 0;
4437}
4438
4439
4440int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
4441{
4442 wpabuf_free(p2p->wfd_ie_prov_disc_req);
4443 p2p->wfd_ie_prov_disc_req = ie;
4444 return 0;
4445}
4446
4447
4448int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
4449{
4450 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
4451 p2p->wfd_ie_prov_disc_resp = ie;
4452 return 0;
4453}
4454
4455
4456int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
4457{
4458 wpabuf_free(p2p->wfd_ie_go_neg);
4459 p2p->wfd_ie_go_neg = ie;
4460 return 0;
4461}
4462
4463
4464int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
4465{
4466 wpabuf_free(p2p->wfd_dev_info);
4467 if (elem) {
4468 p2p->wfd_dev_info = wpabuf_dup(elem);
4469 if (p2p->wfd_dev_info == NULL)
4470 return -1;
4471 } else
4472 p2p->wfd_dev_info = NULL;
4473
4474 return 0;
4475}
4476
4477
4478int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
4479{
4480 wpabuf_free(p2p->wfd_assoc_bssid);
4481 if (elem) {
4482 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
4483 if (p2p->wfd_assoc_bssid == NULL)
4484 return -1;
4485 } else
4486 p2p->wfd_assoc_bssid = NULL;
4487
4488 return 0;
4489}
4490
4491
4492int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
4493 const struct wpabuf *elem)
4494{
4495 wpabuf_free(p2p->wfd_coupled_sink_info);
4496 if (elem) {
4497 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
4498 if (p2p->wfd_coupled_sink_info == NULL)
4499 return -1;
4500 } else
4501 p2p->wfd_coupled_sink_info = NULL;
4502
4503 return 0;
4504}
4505
4506#endif /* CONFIG_WIFI_DISPLAY */
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08004507
4508
4509int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
4510 int max_disc_tu)
4511{
4512 if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
4513 return -1;
4514
4515 p2p->min_disc_int = min_disc_int;
4516 p2p->max_disc_int = max_disc_int;
4517 p2p->max_disc_tu = max_disc_tu;
4518 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Set discoverable interval: "
4519 "min=%d max=%d max_tu=%d", min_disc_int, max_disc_int,
4520 max_disc_tu);
4521
4522 return 0;
4523}