blob: 138ba16bdb008fec57790da552b06062edf6282b [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"
15#include "wps/wps_i.h"
16#include "p2p_i.h"
17#include "p2p.h"
18
19
20static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx);
21static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev);
22static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
23 const u8 *sa, const u8 *data, size_t len,
24 int rx_freq);
25static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
26 const u8 *sa, const u8 *data,
27 size_t len);
28static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx);
29static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx);
30
31
32/*
33 * p2p_scan recovery timeout
34 *
35 * Many drivers are using 30 second timeout on scan results. Allow a bit larger
36 * timeout for this to avoid hitting P2P timeout unnecessarily.
37 */
38#define P2P_SCAN_TIMEOUT 35
39
40/**
41 * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer
42 * entries will be removed
43 */
44#define P2P_PEER_EXPIRATION_AGE 300
45
46#define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2)
47
48static void p2p_expire_peers(struct p2p_data *p2p)
49{
50 struct p2p_device *dev, *n;
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -080051 struct os_reltime now;
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -080052 size_t i;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070053
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -080054 os_get_reltime(&now);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070055 dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
56 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec)
57 continue;
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -080058
Dmitry Shmidt9e3f8ee2014-01-17 10:52:01 -080059 if (dev == p2p->go_neg_peer) {
60 /*
61 * GO Negotiation is in progress with the peer, so
62 * don't expire the peer entry until GO Negotiation
63 * fails or times out.
64 */
65 continue;
66 }
67
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -080068 if (p2p->cfg->go_connected &&
69 p2p->cfg->go_connected(p2p->cfg->cb_ctx,
70 dev->info.p2p_device_addr)) {
71 /*
72 * We are connected as a client to a group in which the
73 * peer is the GO, so do not expire the peer entry.
74 */
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -080075 os_get_reltime(&dev->last_seen);
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -080076 continue;
77 }
78
79 for (i = 0; i < p2p->num_groups; i++) {
80 if (p2p_group_is_client_connected(
81 p2p->groups[i], dev->info.p2p_device_addr))
82 break;
83 }
84 if (i < p2p->num_groups) {
85 /*
86 * The peer is connected as a client in a group where
87 * we are the GO, so do not expire the peer entry.
88 */
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -080089 os_get_reltime(&dev->last_seen);
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -080090 continue;
91 }
92
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -070093 p2p_dbg(p2p, "Expiring old peer entry " MACSTR,
94 MAC2STR(dev->info.p2p_device_addr));
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070095 dl_list_del(&dev->list);
96 p2p_device_free(p2p, dev);
97 }
98}
99
100
101static void p2p_expiration_timeout(void *eloop_ctx, void *timeout_ctx)
102{
103 struct p2p_data *p2p = eloop_ctx;
104 p2p_expire_peers(p2p);
105 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
106 p2p_expiration_timeout, p2p, NULL);
107}
108
109
110static const char * p2p_state_txt(int state)
111{
112 switch (state) {
113 case P2P_IDLE:
114 return "IDLE";
115 case P2P_SEARCH:
116 return "SEARCH";
117 case P2P_CONNECT:
118 return "CONNECT";
119 case P2P_CONNECT_LISTEN:
120 return "CONNECT_LISTEN";
121 case P2P_GO_NEG:
122 return "GO_NEG";
123 case P2P_LISTEN_ONLY:
124 return "LISTEN_ONLY";
125 case P2P_WAIT_PEER_CONNECT:
126 return "WAIT_PEER_CONNECT";
127 case P2P_WAIT_PEER_IDLE:
128 return "WAIT_PEER_IDLE";
129 case P2P_SD_DURING_FIND:
130 return "SD_DURING_FIND";
131 case P2P_PROVISIONING:
132 return "PROVISIONING";
133 case P2P_PD_DURING_FIND:
134 return "PD_DURING_FIND";
135 case P2P_INVITE:
136 return "INVITE";
137 case P2P_INVITE_LISTEN:
138 return "INVITE_LISTEN";
139 default:
140 return "?";
141 }
142}
143
144
Dmitry Shmidtb7b4d0e2013-08-26 12:09:05 -0700145const char * p2p_get_state_txt(struct p2p_data *p2p)
146{
147 return p2p_state_txt(p2p->state);
148}
149
150
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800151u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr)
152{
153 struct p2p_device *dev = NULL;
154
155 if (!addr || !p2p)
156 return 0;
157
158 dev = p2p_get_device(p2p, addr);
159 if (dev)
160 return dev->wps_prov_info;
161 else
162 return 0;
163}
164
165
Dmitry Shmidt04949592012-07-19 12:16:46 -0700166void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr)
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800167{
168 struct p2p_device *dev = NULL;
169
Dmitry Shmidt04949592012-07-19 12:16:46 -0700170 if (!addr || !p2p)
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800171 return;
172
Dmitry Shmidt04949592012-07-19 12:16:46 -0700173 dev = p2p_get_device(p2p, addr);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800174 if (dev)
175 dev->wps_prov_info = 0;
176}
177
178
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700179void p2p_set_state(struct p2p_data *p2p, int new_state)
180{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700181 p2p_dbg(p2p, "State %s -> %s",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700182 p2p_state_txt(p2p->state), p2p_state_txt(new_state));
183 p2p->state = new_state;
184}
185
186
187void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
188{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700189 p2p_dbg(p2p, "Set timeout (state=%s): %u.%06u sec",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700190 p2p_state_txt(p2p->state), sec, usec);
191 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
192 eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
193}
194
195
196void p2p_clear_timeout(struct p2p_data *p2p)
197{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700198 p2p_dbg(p2p, "Clear timeout (state=%s)", p2p_state_txt(p2p->state));
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700199 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
200}
201
202
203void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
204 int status)
205{
206 struct p2p_go_neg_results res;
207 p2p_clear_timeout(p2p);
208 p2p_set_state(p2p, P2P_IDLE);
Dmitry Shmidt8c652892013-03-01 10:14:01 -0800209 if (p2p->go_neg_peer) {
210 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800211 p2p->go_neg_peer->wps_method = WPS_NOT_READY;
Dmitry Shmidt8c652892013-03-01 10:14:01 -0800212 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700213 p2p->go_neg_peer = NULL;
214
215 os_memset(&res, 0, sizeof(res));
216 res.status = status;
217 if (peer) {
218 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr,
219 ETH_ALEN);
220 os_memcpy(res.peer_interface_addr, peer->intended_addr,
221 ETH_ALEN);
222 }
223 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
224}
225
226
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800227static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700228{
229 unsigned int r, tu;
230 int freq;
231 struct wpabuf *ies;
232
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700233 p2p_dbg(p2p, "Starting short listen state (state=%s)",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700234 p2p_state_txt(p2p->state));
235
Dmitry Shmidt4b060592013-04-29 16:42:49 -0700236 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700237 if (freq < 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700238 p2p_dbg(p2p, "Unknown regulatory class/channel");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700239 return;
240 }
241
242 os_get_random((u8 *) &r, sizeof(r));
243 tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
244 p2p->min_disc_int) * 100;
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800245 if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu)
246 tu = p2p->max_disc_tu;
247 if (!dev_disc && tu < 100)
248 tu = 100; /* Need to wait in non-device discovery use cases */
249 if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen)
250 tu = p2p->cfg->max_listen * 1000 / 1024;
251
252 if (tu == 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700253 p2p_dbg(p2p, "Skip listen state since duration was 0 TU");
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800254 p2p_set_timeout(p2p, 0, 0);
255 return;
256 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700257
258 p2p->pending_listen_freq = freq;
259 p2p->pending_listen_sec = 0;
260 p2p->pending_listen_usec = 1024 * tu;
261
262 ies = p2p_build_probe_resp_ies(p2p);
263 if (ies == NULL)
264 return;
265
266 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
267 ies) < 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700268 p2p_dbg(p2p, "Failed to start listen mode");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700269 p2p->pending_listen_freq = 0;
270 }
271 wpabuf_free(ies);
272}
273
274
275int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
276{
277 int freq;
278 struct wpabuf *ies;
279
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700280 p2p_dbg(p2p, "Going to listen(only) state");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700281
Dmitry Shmidt4b060592013-04-29 16:42:49 -0700282 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700283 if (freq < 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700284 p2p_dbg(p2p, "Unknown regulatory class/channel");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700285 return -1;
286 }
287
288 p2p->pending_listen_freq = freq;
289 p2p->pending_listen_sec = timeout / 1000;
290 p2p->pending_listen_usec = (timeout % 1000) * 1000;
291
292 if (p2p->p2p_scan_running) {
Dmitry Shmidt04949592012-07-19 12:16:46 -0700293 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700294 p2p_dbg(p2p, "p2p_scan running - connect is already pending - skip listen");
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800295 return 0;
296 }
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700297 p2p_dbg(p2p, "p2p_scan running - delay start of listen state");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700298 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
299 return 0;
300 }
301
302 ies = p2p_build_probe_resp_ies(p2p);
303 if (ies == NULL)
304 return -1;
305
306 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700307 p2p_dbg(p2p, "Failed to start listen mode");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700308 p2p->pending_listen_freq = 0;
309 wpabuf_free(ies);
310 return -1;
311 }
312 wpabuf_free(ies);
313
314 p2p_set_state(p2p, P2P_LISTEN_ONLY);
315
316 return 0;
317}
318
319
320static void p2p_device_clear_reported(struct p2p_data *p2p)
321{
322 struct p2p_device *dev;
323 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list)
324 dev->flags &= ~P2P_DEV_REPORTED;
325}
326
327
328/**
329 * p2p_get_device - Fetch a peer entry
330 * @p2p: P2P module context from p2p_init()
331 * @addr: P2P Device Address of the peer
332 * Returns: Pointer to the device entry or %NULL if not found
333 */
334struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
335{
336 struct p2p_device *dev;
337 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
338 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
339 return dev;
340 }
341 return NULL;
342}
343
344
345/**
346 * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
347 * @p2p: P2P module context from p2p_init()
348 * @addr: P2P Interface Address of the peer
349 * Returns: Pointer to the device entry or %NULL if not found
350 */
351struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
352 const u8 *addr)
353{
354 struct p2p_device *dev;
355 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
356 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
357 return dev;
358 }
359 return NULL;
360}
361
362
363/**
364 * p2p_create_device - Create a peer entry
365 * @p2p: P2P module context from p2p_init()
366 * @addr: P2P Device Address of the peer
367 * Returns: Pointer to the device entry or %NULL on failure
368 *
369 * If there is already an entry for the peer, it will be returned instead of
370 * creating a new one.
371 */
372static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
373 const u8 *addr)
374{
375 struct p2p_device *dev, *oldest = NULL;
376 size_t count = 0;
377
378 dev = p2p_get_device(p2p, addr);
379 if (dev)
380 return dev;
381
382 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
383 count++;
384 if (oldest == NULL ||
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800385 os_reltime_before(&dev->last_seen, &oldest->last_seen))
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700386 oldest = dev;
387 }
388 if (count + 1 > p2p->cfg->max_peers && oldest) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700389 p2p_dbg(p2p, "Remove oldest peer entry to make room for a new peer");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700390 dl_list_del(&oldest->list);
391 p2p_device_free(p2p, oldest);
392 }
393
394 dev = os_zalloc(sizeof(*dev));
395 if (dev == NULL)
396 return NULL;
397 dl_list_add(&p2p->devices, &dev->list);
398 os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
399
400 return dev;
401}
402
403
404static void p2p_copy_client_info(struct p2p_device *dev,
405 struct p2p_client_info *cli)
406{
407 os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len);
408 dev->info.device_name[cli->dev_name_len] = '\0';
409 dev->info.dev_capab = cli->dev_capab;
410 dev->info.config_methods = cli->config_methods;
411 os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
412 dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
413 os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
414 dev->info.wps_sec_dev_type_list_len);
415}
416
417
418static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
419 const u8 *go_interface_addr, int freq,
420 const u8 *gi, size_t gi_len)
421{
422 struct p2p_group_info info;
423 size_t c;
424 struct p2p_device *dev;
425
426 if (gi == NULL)
427 return 0;
428
429 if (p2p_group_info_parse(gi, gi_len, &info) < 0)
430 return -1;
431
432 /*
433 * Clear old data for this group; if the devices are still in the
434 * group, the information will be restored in the loop following this.
435 */
436 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800437 if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700438 ETH_ALEN) == 0) {
439 os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
440 os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
441 }
442 }
443
444 for (c = 0; c < info.num_clients; c++) {
445 struct p2p_client_info *cli = &info.client[c];
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800446 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
447 ETH_ALEN) == 0)
448 continue; /* ignore our own entry */
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700449 dev = p2p_get_device(p2p, cli->p2p_device_addr);
450 if (dev) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700451 if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
Dmitry Shmidt04949592012-07-19 12:16:46 -0700452 P2P_DEV_PROBE_REQ_ONLY)) {
453 /*
454 * Update information since we have not
455 * received this directly from the client.
456 */
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700457 p2p_copy_client_info(dev, cli);
Dmitry Shmidt04949592012-07-19 12:16:46 -0700458 } else {
459 /*
460 * Need to update P2P Client Discoverability
461 * flag since it is valid only in P2P Group
462 * Info attribute.
463 */
464 dev->info.dev_capab &=
465 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
466 dev->info.dev_capab |=
467 cli->dev_capab &
468 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
469 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700470 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
471 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
472 }
473 } else {
474 dev = p2p_create_device(p2p, cli->p2p_device_addr);
475 if (dev == NULL)
476 continue;
477 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
478 p2p_copy_client_info(dev, cli);
479 dev->oper_freq = freq;
480 p2p->cfg->dev_found(p2p->cfg->cb_ctx,
481 dev->info.p2p_device_addr,
482 &dev->info, 1);
483 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
484 }
485
486 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
487 ETH_ALEN);
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800488 os_get_reltime(&dev->last_seen);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700489 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
490 os_memcpy(dev->member_in_go_iface, go_interface_addr,
491 ETH_ALEN);
492 }
493
494 return 0;
495}
496
497
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700498static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev,
499 int probe_req, const struct p2p_message *msg)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700500{
501 os_memcpy(dev->info.device_name, msg->device_name,
502 sizeof(dev->info.device_name));
503
504 if (msg->manufacturer &&
505 msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
506 os_memset(dev->info.manufacturer, 0,
507 sizeof(dev->info.manufacturer));
508 os_memcpy(dev->info.manufacturer, msg->manufacturer,
509 msg->manufacturer_len);
510 }
511
512 if (msg->model_name &&
513 msg->model_name_len < sizeof(dev->info.model_name)) {
514 os_memset(dev->info.model_name, 0,
515 sizeof(dev->info.model_name));
516 os_memcpy(dev->info.model_name, msg->model_name,
517 msg->model_name_len);
518 }
519
520 if (msg->model_number &&
521 msg->model_number_len < sizeof(dev->info.model_number)) {
522 os_memset(dev->info.model_number, 0,
523 sizeof(dev->info.model_number));
524 os_memcpy(dev->info.model_number, msg->model_number,
525 msg->model_number_len);
526 }
527
528 if (msg->serial_number &&
529 msg->serial_number_len < sizeof(dev->info.serial_number)) {
530 os_memset(dev->info.serial_number, 0,
531 sizeof(dev->info.serial_number));
532 os_memcpy(dev->info.serial_number, msg->serial_number,
533 msg->serial_number_len);
534 }
535
536 if (msg->pri_dev_type)
537 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
538 sizeof(dev->info.pri_dev_type));
539 else if (msg->wps_pri_dev_type)
540 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
541 sizeof(dev->info.pri_dev_type));
542
543 if (msg->wps_sec_dev_type_list) {
544 os_memcpy(dev->info.wps_sec_dev_type_list,
545 msg->wps_sec_dev_type_list,
546 msg->wps_sec_dev_type_list_len);
547 dev->info.wps_sec_dev_type_list_len =
548 msg->wps_sec_dev_type_list_len;
549 }
550
551 if (msg->capability) {
Dmitry Shmidt04949592012-07-19 12:16:46 -0700552 /*
553 * P2P Client Discoverability bit is reserved in all frames
554 * that use this function, so do not change its value here.
555 */
556 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
557 dev->info.dev_capab |= msg->capability[0] &
558 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700559 dev->info.group_capab = msg->capability[1];
560 }
561
562 if (msg->ext_listen_timing) {
563 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
564 dev->ext_listen_interval =
565 WPA_GET_LE16(msg->ext_listen_timing + 2);
566 }
Dmitry Shmidt04949592012-07-19 12:16:46 -0700567
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700568 if (!probe_req) {
Dmitry Shmidtf8623282013-02-20 14:34:59 -0800569 u16 new_config_methods;
570 new_config_methods = msg->config_methods ?
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700571 msg->config_methods : msg->wps_config_methods;
Dmitry Shmidtf8623282013-02-20 14:34:59 -0800572 if (new_config_methods &&
573 dev->info.config_methods != new_config_methods) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700574 p2p_dbg(p2p, "Update peer " MACSTR
575 " config_methods 0x%x -> 0x%x",
576 MAC2STR(dev->info.p2p_device_addr),
577 dev->info.config_methods,
578 new_config_methods);
Dmitry Shmidtf8623282013-02-20 14:34:59 -0800579 dev->info.config_methods = new_config_methods;
580 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700581 }
582}
583
584
585/**
Dmitry Shmidt04949592012-07-19 12:16:46 -0700586 * p2p_add_device - Add peer entries based on scan results or P2P frames
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700587 * @p2p: P2P module context from p2p_init()
588 * @addr: Source address of Beacon or Probe Response frame (may be either
589 * P2P Device Address or P2P Interface Address)
590 * @level: Signal level (signal strength of the received frame from the peer)
591 * @freq: Frequency on which the Beacon or Probe Response frame was received
Dmitry Shmidtf8623282013-02-20 14:34:59 -0800592 * @rx_time: Time when the result was received
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700593 * @ies: IEs from the Beacon or Probe Response frame
594 * @ies_len: Length of ies buffer in octets
Dmitry Shmidt04949592012-07-19 12:16:46 -0700595 * @scan_res: Whether this was based on scan results
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700596 * Returns: 0 on success, -1 on failure
597 *
598 * If the scan result is for a GO, the clients in the group will also be added
599 * to the peer table. This function can also be used with some other frames
600 * like Provision Discovery Request that contains P2P Capability and P2P Device
601 * Info attributes.
602 */
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800603int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800604 struct os_reltime *rx_time, int level, const u8 *ies,
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800605 size_t ies_len, int scan_res)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700606{
607 struct p2p_device *dev;
608 struct p2p_message msg;
609 const u8 *p2p_dev_addr;
610 int i;
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800611 struct os_reltime time_now;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700612
613 os_memset(&msg, 0, sizeof(msg));
614 if (p2p_parse_ies(ies, ies_len, &msg)) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700615 p2p_dbg(p2p, "Failed to parse P2P IE for a device entry");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700616 p2p_parse_free(&msg);
617 return -1;
618 }
619
620 if (msg.p2p_device_addr)
621 p2p_dev_addr = msg.p2p_device_addr;
622 else if (msg.device_id)
623 p2p_dev_addr = msg.device_id;
624 else {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700625 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700626 p2p_parse_free(&msg);
627 return -1;
628 }
629
630 if (!is_zero_ether_addr(p2p->peer_filter) &&
631 os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700632 p2p_dbg(p2p, "Do not add peer filter for " MACSTR
633 " due to peer filter", MAC2STR(p2p_dev_addr));
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800634 p2p_parse_free(&msg);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700635 return 0;
636 }
637
638 dev = p2p_create_device(p2p, p2p_dev_addr);
639 if (dev == NULL) {
640 p2p_parse_free(&msg);
641 return -1;
642 }
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800643
Dmitry Shmidtf8623282013-02-20 14:34:59 -0800644 if (rx_time == NULL) {
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800645 os_get_reltime(&time_now);
Dmitry Shmidtf8623282013-02-20 14:34:59 -0800646 rx_time = &time_now;
647 }
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800648
649 /*
650 * Update the device entry only if the new peer
651 * entry is newer than the one previously stored.
652 */
Dmitry Shmidtf8623282013-02-20 14:34:59 -0800653 if (dev->last_seen.sec > 0 &&
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800654 os_reltime_before(rx_time, &dev->last_seen)) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700655 p2p_dbg(p2p, "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u)",
Dmitry Shmidtf8623282013-02-20 14:34:59 -0800656 (unsigned int) rx_time->sec,
657 (unsigned int) rx_time->usec,
658 (unsigned int) dev->last_seen.sec,
659 (unsigned int) dev->last_seen.usec);
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800660 p2p_parse_free(&msg);
661 return -1;
662 }
663
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800664 os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800665
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700666 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
667
668 if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
669 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
670 if (msg.ssid &&
671 (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
672 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
673 != 0)) {
674 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
675 dev->oper_ssid_len = msg.ssid[1];
676 }
677
678 if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
679 *msg.ds_params >= 1 && *msg.ds_params <= 14) {
680 int ds_freq;
681 if (*msg.ds_params == 14)
682 ds_freq = 2484;
683 else
684 ds_freq = 2407 + *msg.ds_params * 5;
685 if (freq != ds_freq) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700686 p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700687 freq, ds_freq);
688 freq = ds_freq;
689 }
690 }
691
Dmitry Shmidt04949592012-07-19 12:16:46 -0700692 if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700693 p2p_dbg(p2p, "Update Listen frequency based on scan results ("
694 MACSTR " %d -> %d MHz (DS param %d)",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700695 MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
696 freq, msg.ds_params ? *msg.ds_params : -1);
697 }
Dmitry Shmidt04949592012-07-19 12:16:46 -0700698 if (scan_res) {
699 dev->listen_freq = freq;
700 if (msg.group_info)
701 dev->oper_freq = freq;
702 }
Jouni Malinen75ecf522011-06-27 15:19:46 -0700703 dev->info.level = level;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700704
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700705 p2p_copy_wps_info(p2p, dev, 0, &msg);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700706
707 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
708 wpabuf_free(dev->info.wps_vendor_ext[i]);
709 dev->info.wps_vendor_ext[i] = NULL;
710 }
711
712 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
713 if (msg.wps_vendor_ext[i] == NULL)
714 break;
715 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
716 msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
717 if (dev->info.wps_vendor_ext[i] == NULL)
718 break;
719 }
720
Dmitry Shmidt61d9df32012-08-29 16:22:06 -0700721 if (msg.wfd_subelems) {
722 wpabuf_free(dev->info.wfd_subelems);
723 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
724 }
725
Dmitry Shmidt04949592012-07-19 12:16:46 -0700726 if (scan_res) {
727 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
728 msg.group_info, msg.group_info_len);
729 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700730
731 p2p_parse_free(&msg);
732
733 if (p2p_pending_sd_req(p2p, dev))
734 dev->flags |= P2P_DEV_SD_SCHEDULE;
735
736 if (dev->flags & P2P_DEV_REPORTED)
737 return 0;
738
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700739 p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)",
740 freq, (unsigned int) rx_time->sec,
Dmitry Shmidtf8623282013-02-20 14:34:59 -0800741 (unsigned int) rx_time->usec);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700742 if (dev->flags & P2P_DEV_USER_REJECTED) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700743 p2p_dbg(p2p, "Do not report rejected device");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700744 return 0;
745 }
746
Dmitry Shmidtf8623282013-02-20 14:34:59 -0800747 if (dev->info.config_methods == 0 &&
748 (freq == 2412 || freq == 2437 || freq == 2462)) {
749 /*
750 * If we have only seen a Beacon frame from a GO, we do not yet
751 * know what WPS config methods it supports. Since some
752 * applications use config_methods value from P2P-DEVICE-FOUND
753 * events, postpone reporting this peer until we've fully
754 * discovered its capabilities.
755 *
756 * At least for now, do this only if the peer was detected on
757 * one of the social channels since that peer can be easily be
758 * found again and there are no limitations of having to use
759 * passive scan on this channels, so this can be done through
760 * Probe Response frame that includes the config_methods
761 * information.
762 */
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700763 p2p_dbg(p2p, "Do not report peer " MACSTR
764 " with unknown config methods", MAC2STR(addr));
Dmitry Shmidtf8623282013-02-20 14:34:59 -0800765 return 0;
766 }
767
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700768 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
769 !(dev->flags & P2P_DEV_REPORTED_ONCE));
770 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
771
772 return 0;
773}
774
775
776static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
777{
778 int i;
779
Dmitry Shmidt497c1d52011-07-21 15:19:46 -0700780 if (p2p->go_neg_peer == dev) {
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800781 /*
782 * If GO Negotiation is in progress, report that it has failed.
783 */
Dmitry Shmidt497c1d52011-07-21 15:19:46 -0700784 p2p_go_neg_failed(p2p, dev, -1);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700785 p2p->go_neg_peer = NULL;
Dmitry Shmidt497c1d52011-07-21 15:19:46 -0700786 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700787 if (p2p->invite_peer == dev)
788 p2p->invite_peer = NULL;
789 if (p2p->sd_peer == dev)
790 p2p->sd_peer = NULL;
791 if (p2p->pending_client_disc_go == dev)
792 p2p->pending_client_disc_go = NULL;
793
Dmitry Shmidtc55524a2011-07-07 11:18:38 -0700794 /* dev_lost() device, but only if it was previously dev_found() */
795 if (dev->flags & P2P_DEV_REPORTED_ONCE)
796 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
797 dev->info.p2p_device_addr);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700798
799 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
800 wpabuf_free(dev->info.wps_vendor_ext[i]);
801 dev->info.wps_vendor_ext[i] = NULL;
802 }
803
Dmitry Shmidt61d9df32012-08-29 16:22:06 -0700804 wpabuf_free(dev->info.wfd_subelems);
805
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700806 os_free(dev);
807}
808
809
810static int p2p_get_next_prog_freq(struct p2p_data *p2p)
811{
812 struct p2p_channels *c;
813 struct p2p_reg_class *cla;
814 size_t cl, ch;
815 int found = 0;
816 u8 reg_class;
817 u8 channel;
818 int freq;
819
820 c = &p2p->cfg->channels;
821 for (cl = 0; cl < c->reg_classes; cl++) {
822 cla = &c->reg_class[cl];
823 if (cla->reg_class != p2p->last_prog_scan_class)
824 continue;
825 for (ch = 0; ch < cla->channels; ch++) {
826 if (cla->channel[ch] == p2p->last_prog_scan_chan) {
827 found = 1;
828 break;
829 }
830 }
831 if (found)
832 break;
833 }
834
835 if (!found) {
836 /* Start from beginning */
837 reg_class = c->reg_class[0].reg_class;
838 channel = c->reg_class[0].channel[0];
839 } else {
840 /* Pick the next channel */
841 ch++;
842 if (ch == cla->channels) {
843 cl++;
844 if (cl == c->reg_classes)
845 cl = 0;
846 ch = 0;
847 }
848 reg_class = c->reg_class[cl].reg_class;
849 channel = c->reg_class[cl].channel[ch];
850 }
851
Dmitry Shmidt4b060592013-04-29 16:42:49 -0700852 freq = p2p_channel_to_freq(reg_class, channel);
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700853 p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700854 reg_class, channel, freq);
855 p2p->last_prog_scan_class = reg_class;
856 p2p->last_prog_scan_chan = channel;
857
858 if (freq == 2412 || freq == 2437 || freq == 2462)
859 return 0; /* No need to add social channels */
860 return freq;
861}
862
863
864static void p2p_search(struct p2p_data *p2p)
865{
866 int freq = 0;
867 enum p2p_scan_type type;
Dmitry Shmidt04949592012-07-19 12:16:46 -0700868 u16 pw_id = DEV_PW_DEFAULT;
Dmitry Shmidt61d9df32012-08-29 16:22:06 -0700869 int res;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700870
871 if (p2p->drv_in_listen) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700872 p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700873 return;
874 }
875 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
876
Dmitry Shmidt04949592012-07-19 12:16:46 -0700877 if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
878 (freq = p2p_get_next_prog_freq(p2p)) > 0) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700879 type = P2P_SCAN_SOCIAL_PLUS_ONE;
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700880 p2p_dbg(p2p, "Starting search (+ freq %u)", freq);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700881 } else {
882 type = P2P_SCAN_SOCIAL;
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700883 p2p_dbg(p2p, "Starting search");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700884 }
885
Dmitry Shmidt61d9df32012-08-29 16:22:06 -0700886 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
887 p2p->num_req_dev_types, p2p->req_dev_types,
888 p2p->find_dev_id, pw_id);
889 if (res < 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700890 p2p_dbg(p2p, "Scan request failed");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700891 p2p_continue_find(p2p);
892 } else {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700893 p2p_dbg(p2p, "Running p2p_scan");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700894 p2p->p2p_scan_running = 1;
895 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
896 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
897 p2p, NULL);
898 }
899}
900
901
902static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
903{
904 struct p2p_data *p2p = eloop_ctx;
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700905 p2p_dbg(p2p, "Find timeout -> stop");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700906 p2p_stop_find(p2p);
907}
908
909
910static int p2p_run_after_scan(struct p2p_data *p2p)
911{
912 struct p2p_device *dev;
913 enum p2p_after_scan op;
914
915 if (p2p->after_scan_tx) {
Dmitry Shmidt8da800a2013-04-24 12:57:01 -0700916 p2p->after_scan_tx_in_progress = 1;
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700917 p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion");
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800918 p2p->cfg->send_action(p2p->cfg->cb_ctx,
919 p2p->after_scan_tx->freq,
920 p2p->after_scan_tx->dst,
921 p2p->after_scan_tx->src,
922 p2p->after_scan_tx->bssid,
923 (u8 *) (p2p->after_scan_tx + 1),
924 p2p->after_scan_tx->len,
925 p2p->after_scan_tx->wait_time);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700926 os_free(p2p->after_scan_tx);
927 p2p->after_scan_tx = NULL;
928 return 1;
929 }
930
931 op = p2p->start_after_scan;
932 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
933 switch (op) {
934 case P2P_AFTER_SCAN_NOTHING:
935 break;
936 case P2P_AFTER_SCAN_LISTEN:
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700937 p2p_dbg(p2p, "Start previously requested Listen state");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700938 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
939 p2p->pending_listen_usec / 1000);
940 return 1;
941 case P2P_AFTER_SCAN_CONNECT:
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700942 p2p_dbg(p2p, "Start previously requested connect with " MACSTR,
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700943 MAC2STR(p2p->after_scan_peer));
944 dev = p2p_get_device(p2p, p2p->after_scan_peer);
945 if (dev == NULL) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700946 p2p_dbg(p2p, "Peer not known anymore");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700947 break;
948 }
949 p2p_connect_send(p2p, dev);
950 return 1;
951 }
952
953 return 0;
954}
955
956
957static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
958{
959 struct p2p_data *p2p = eloop_ctx;
960 int running;
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700961 p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700962 running = p2p->p2p_scan_running;
963 /* Make sure we recover from missed scan results callback */
964 p2p->p2p_scan_running = 0;
965
966 if (running)
967 p2p_run_after_scan(p2p);
968}
969
970
971static void p2p_free_req_dev_types(struct p2p_data *p2p)
972{
973 p2p->num_req_dev_types = 0;
974 os_free(p2p->req_dev_types);
975 p2p->req_dev_types = NULL;
976}
977
978
979int p2p_find(struct p2p_data *p2p, unsigned int timeout,
980 enum p2p_discovery_type type,
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -0800981 unsigned int num_req_dev_types, const u8 *req_dev_types,
Dmitry Shmidt61d9df32012-08-29 16:22:06 -0700982 const u8 *dev_id, unsigned int search_delay)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700983{
984 int res;
985
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700986 p2p_dbg(p2p, "Starting find (type=%d)", type);
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800987 os_get_reltime(&p2p->find_start);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700988 if (p2p->p2p_scan_running) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700989 p2p_dbg(p2p, "p2p_scan is already running");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700990 }
991
992 p2p_free_req_dev_types(p2p);
993 if (req_dev_types && num_req_dev_types) {
994 p2p->req_dev_types = os_malloc(num_req_dev_types *
995 WPS_DEV_TYPE_LEN);
996 if (p2p->req_dev_types == NULL)
997 return -1;
998 os_memcpy(p2p->req_dev_types, req_dev_types,
999 num_req_dev_types * WPS_DEV_TYPE_LEN);
1000 p2p->num_req_dev_types = num_req_dev_types;
1001 }
1002
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08001003 if (dev_id) {
1004 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
1005 p2p->find_dev_id = p2p->find_dev_id_buf;
1006 } else
1007 p2p->find_dev_id = NULL;
1008
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001009 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1010 p2p_clear_timeout(p2p);
1011 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1012 p2p->find_type = type;
1013 p2p_device_clear_reported(p2p);
1014 p2p_set_state(p2p, P2P_SEARCH);
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001015 p2p->search_delay = search_delay;
1016 p2p->in_search_delay = 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001017 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001018 p2p->last_p2p_find_timeout = timeout;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001019 if (timeout)
1020 eloop_register_timeout(timeout, 0, p2p_find_timeout,
1021 p2p, NULL);
1022 switch (type) {
1023 case P2P_FIND_START_WITH_FULL:
1024 case P2P_FIND_PROGRESSIVE:
1025 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1026 p2p->num_req_dev_types,
Dmitry Shmidt04949592012-07-19 12:16:46 -07001027 p2p->req_dev_types, dev_id,
1028 DEV_PW_DEFAULT);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001029 break;
1030 case P2P_FIND_ONLY_SOCIAL:
1031 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1032 p2p->num_req_dev_types,
Dmitry Shmidt04949592012-07-19 12:16:46 -07001033 p2p->req_dev_types, dev_id,
1034 DEV_PW_DEFAULT);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001035 break;
1036 default:
1037 return -1;
1038 }
1039
1040 if (res == 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001041 p2p_dbg(p2p, "Running p2p_scan");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001042 p2p->p2p_scan_running = 1;
1043 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1044 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1045 p2p, NULL);
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08001046 } else if (p2p->p2p_scan_running) {
1047 p2p_dbg(p2p, "Failed to start p2p_scan - another p2p_scan was already running");
1048 /* wait for the previous p2p_scan to complete */
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001049 } else {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001050 p2p_dbg(p2p, "Failed to start p2p_scan");
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001051 p2p_set_state(p2p, P2P_IDLE);
1052 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001053 }
1054
1055 return res;
1056}
1057
1058
1059void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1060{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001061 p2p_dbg(p2p, "Stopping find");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001062 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1063 p2p_clear_timeout(p2p);
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08001064 if (p2p->state == P2P_SEARCH)
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001065 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001066 p2p_set_state(p2p, P2P_IDLE);
1067 p2p_free_req_dev_types(p2p);
1068 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
Dmitry Shmidt8c652892013-03-01 10:14:01 -08001069 if (p2p->go_neg_peer)
1070 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001071 p2p->go_neg_peer = NULL;
1072 p2p->sd_peer = NULL;
1073 p2p->invite_peer = NULL;
Dmitry Shmidt04949592012-07-19 12:16:46 -07001074 p2p_stop_listen_for_freq(p2p, freq);
1075}
1076
1077
1078void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1079{
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001080 if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001081 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001082 return;
1083 }
Dmitry Shmidt04949592012-07-19 12:16:46 -07001084 if (p2p->in_listen) {
1085 p2p->in_listen = 0;
1086 p2p_clear_timeout(p2p);
1087 }
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001088 if (p2p->drv_in_listen) {
1089 /*
1090 * The driver may not deliver callback to p2p_listen_end()
1091 * when the operation gets canceled, so clear the internal
1092 * variable that is tracking driver state.
1093 */
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001094 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001095 p2p->drv_in_listen = 0;
1096 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001097 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1098}
1099
1100
Dmitry Shmidt391c59f2013-09-03 12:16:28 -07001101void p2p_stop_listen(struct p2p_data *p2p)
1102{
1103 if (p2p->state != P2P_LISTEN_ONLY) {
1104 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state.");
1105 return;
1106 }
1107
1108 p2p_stop_listen_for_freq(p2p, 0);
1109 p2p_set_state(p2p, P2P_IDLE);
1110}
1111
1112
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001113void p2p_stop_find(struct p2p_data *p2p)
1114{
1115 p2p_stop_find_for_freq(p2p, 0);
1116}
1117
1118
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001119static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1120 unsigned int force_freq,
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07001121 unsigned int pref_freq, int go)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001122{
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001123 u8 op_class, op_channel;
1124 unsigned int freq = force_freq ? force_freq : pref_freq;
1125
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07001126 p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d",
1127 force_freq, pref_freq, go);
Dmitry Shmidt4b060592013-04-29 16:42:49 -07001128 if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001129 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq);
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001130 return -1;
1131 }
1132
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07001133 if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) &&
1134 (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class,
1135 op_channel))) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001136 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P",
1137 freq, op_class, op_channel);
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001138 return -1;
1139 }
1140
1141 p2p->op_reg_class = op_class;
1142 p2p->op_channel = op_channel;
1143
1144 if (force_freq) {
1145 p2p->channels.reg_classes = 1;
1146 p2p->channels.reg_class[0].channels = 1;
1147 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1148 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001149 } else {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001150 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1151 sizeof(struct p2p_channels));
1152 }
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001153
1154 return 0;
1155}
1156
1157
1158static void p2p_prepare_channel_best(struct p2p_data *p2p)
1159{
1160 u8 op_class, op_channel;
Dmitry Shmidta0d265f2013-11-19 13:13:41 -08001161 const int op_classes_5ghz[] = { 124, 115, 0 };
1162 const int op_classes_ht40[] = { 126, 127, 116, 117, 0 };
Dmitry Shmidte0e48dc2013-11-18 12:00:06 -08001163 const int op_classes_vht[] = { 128, 0 };
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001164
Dmitry Shmidtb7b4d0e2013-08-26 12:09:05 -07001165 p2p_dbg(p2p, "Prepare channel best");
1166
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001167 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1168 p2p_supported_freq(p2p, p2p->best_freq_overall) &&
Dmitry Shmidt4b060592013-04-29 16:42:49 -07001169 p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1170 == 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001171 p2p_dbg(p2p, "Select best overall channel as operating channel preference");
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001172 p2p->op_reg_class = op_class;
1173 p2p->op_channel = op_channel;
1174 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1175 p2p_supported_freq(p2p, p2p->best_freq_5) &&
Dmitry Shmidt4b060592013-04-29 16:42:49 -07001176 p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1177 == 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001178 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001179 p2p->op_reg_class = op_class;
1180 p2p->op_channel = op_channel;
1181 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1182 p2p_supported_freq(p2p, p2p->best_freq_24) &&
Dmitry Shmidt4b060592013-04-29 16:42:49 -07001183 p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1184 &op_channel) == 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001185 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001186 p2p->op_reg_class = op_class;
1187 p2p->op_channel = op_channel;
Dmitry Shmidtb7b4d0e2013-08-26 12:09:05 -07001188 } else if (p2p->cfg->num_pref_chan > 0 &&
1189 p2p_channels_includes(&p2p->cfg->channels,
1190 p2p->cfg->pref_chan[0].op_class,
1191 p2p->cfg->pref_chan[0].chan)) {
1192 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference");
1193 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class;
1194 p2p->op_channel = p2p->cfg->pref_chan[0].chan;
Dmitry Shmidte0e48dc2013-11-18 12:00:06 -08001195 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht,
1196 &p2p->op_reg_class, &p2p->op_channel) ==
1197 0) {
1198 p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference",
1199 p2p->op_reg_class, p2p->op_channel);
1200 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40,
1201 &p2p->op_reg_class, &p2p->op_channel) ==
1202 0) {
1203 p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference",
1204 p2p->op_reg_class, p2p->op_channel);
1205 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz,
1206 &p2p->op_reg_class, &p2p->op_channel) ==
1207 0) {
1208 p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference",
1209 p2p->op_reg_class, p2p->op_channel);
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001210 } else {
Dmitry Shmidtb7b4d0e2013-08-26 12:09:05 -07001211 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference");
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001212 p2p->op_reg_class = p2p->cfg->op_reg_class;
1213 p2p->op_channel = p2p->cfg->op_channel;
1214 }
1215
1216 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1217 sizeof(struct p2p_channels));
1218}
1219
1220
1221/**
1222 * p2p_prepare_channel - Select operating channel for GO Negotiation
1223 * @p2p: P2P module context from p2p_init()
1224 * @dev: Selected peer device
1225 * @force_freq: Forced frequency in MHz or 0 if not forced
1226 * @pref_freq: Preferred frequency in MHz or 0 if no preference
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07001227 * @go: Whether the local end will be forced to be GO
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001228 * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1229 *
1230 * This function is used to do initial operating channel selection for GO
1231 * Negotiation prior to having received peer information. The selected channel
1232 * may be further optimized in p2p_reselect_channel() once the peer information
1233 * is available.
1234 */
Dmitry Shmidt7a5e50a2013-03-05 12:37:16 -08001235int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07001236 unsigned int force_freq, unsigned int pref_freq, int go)
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001237{
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07001238 p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d",
1239 force_freq, pref_freq, go);
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001240 if (force_freq || pref_freq) {
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07001241 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) <
1242 0)
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001243 return -1;
1244 } else {
1245 p2p_prepare_channel_best(p2p);
1246 }
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07001247 p2p_channels_dump(p2p, "prepared channels", &p2p->channels);
1248 if (go)
1249 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq);
1250 else if (!force_freq)
1251 p2p_channels_union(&p2p->channels, &p2p->cfg->cli_channels,
1252 &p2p->channels);
1253 p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels);
1254
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001255 p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001256 p2p->op_reg_class, p2p->op_channel,
1257 force_freq ? " (forced)" : "");
1258
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001259 if (force_freq)
1260 dev->flags |= P2P_DEV_FORCE_FREQ;
1261 else
1262 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1263
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001264 return 0;
1265}
1266
1267
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001268static void p2p_set_dev_persistent(struct p2p_device *dev,
1269 int persistent_group)
1270{
1271 switch (persistent_group) {
1272 case 0:
1273 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1274 P2P_DEV_PREFER_PERSISTENT_RECONN);
1275 break;
1276 case 1:
1277 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1278 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1279 break;
1280 case 2:
1281 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1282 P2P_DEV_PREFER_PERSISTENT_RECONN;
1283 break;
1284 }
1285}
1286
1287
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001288int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1289 enum p2p_wps_method wps_method,
1290 int go_intent, const u8 *own_interface_addr,
Dmitry Shmidt04949592012-07-19 12:16:46 -07001291 unsigned int force_freq, int persistent_group,
1292 const u8 *force_ssid, size_t force_ssid_len,
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001293 int pd_before_go_neg, unsigned int pref_freq)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001294{
1295 struct p2p_device *dev;
1296
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001297 p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001298 " GO Intent=%d Intended Interface Address=" MACSTR
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001299 " wps_method=%d persistent_group=%d pd_before_go_neg=%d",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001300 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001301 wps_method, persistent_group, pd_before_go_neg);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001302
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001303 dev = p2p_get_device(p2p, peer_addr);
1304 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001305 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001306 MAC2STR(peer_addr));
1307 return -1;
1308 }
1309
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07001310 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq,
1311 go_intent == 15) < 0)
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001312 return -1;
1313
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001314 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1315 if (!(dev->info.dev_capab &
1316 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001317 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001318 " that is in a group and is not discoverable",
1319 MAC2STR(peer_addr));
1320 return -1;
1321 }
1322 if (dev->oper_freq <= 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001323 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001324 " with incomplete information",
1325 MAC2STR(peer_addr));
1326 return -1;
1327 }
1328
1329 /*
1330 * First, try to connect directly. If the peer does not
1331 * acknowledge frames, assume it is sleeping and use device
1332 * discoverability via the GO at that point.
1333 */
1334 }
1335
Dmitry Shmidt04949592012-07-19 12:16:46 -07001336 p2p->ssid_set = 0;
1337 if (force_ssid) {
1338 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1339 force_ssid, force_ssid_len);
1340 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1341 p2p->ssid_len = force_ssid_len;
1342 p2p->ssid_set = 1;
1343 }
1344
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001345 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1346 dev->flags &= ~P2P_DEV_USER_REJECTED;
1347 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1348 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
Dmitry Shmidt04949592012-07-19 12:16:46 -07001349 if (pd_before_go_neg)
1350 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001351 else {
Dmitry Shmidt04949592012-07-19 12:16:46 -07001352 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001353 /*
Dmitry Shmidt9cdf1b92013-02-27 12:58:50 -08001354 * Assign dialog token and tie breaker here to use the same
1355 * values in each retry within the same GO Negotiation exchange.
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001356 */
1357 dev->dialog_token++;
1358 if (dev->dialog_token == 0)
1359 dev->dialog_token = 1;
Dmitry Shmidt9cdf1b92013-02-27 12:58:50 -08001360 dev->tie_breaker = p2p->next_tie_breaker;
1361 p2p->next_tie_breaker = !p2p->next_tie_breaker;
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001362 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001363 dev->connect_reqs = 0;
1364 dev->go_neg_req_sent = 0;
1365 dev->go_state = UNKNOWN_GO;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001366 p2p_set_dev_persistent(dev, persistent_group);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001367 p2p->go_intent = go_intent;
1368 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1369
1370 if (p2p->state != P2P_IDLE)
1371 p2p_stop_find(p2p);
1372
1373 if (p2p->after_scan_tx) {
1374 /*
1375 * We need to drop the pending frame to avoid issues with the
1376 * new GO Negotiation, e.g., when the pending frame was from a
1377 * previous attempt at starting a GO Negotiation.
1378 */
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001379 p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001380 os_free(p2p->after_scan_tx);
1381 p2p->after_scan_tx = NULL;
1382 }
1383
1384 dev->wps_method = wps_method;
1385 dev->status = P2P_SC_SUCCESS;
1386
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001387 if (p2p->p2p_scan_running) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001388 p2p_dbg(p2p, "p2p_scan running - delay connect send");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001389 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1390 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1391 return 0;
1392 }
1393 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1394
1395 return p2p_connect_send(p2p, dev);
1396}
1397
1398
1399int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1400 enum p2p_wps_method wps_method,
1401 int go_intent, const u8 *own_interface_addr,
Dmitry Shmidt04949592012-07-19 12:16:46 -07001402 unsigned int force_freq, int persistent_group,
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001403 const u8 *force_ssid, size_t force_ssid_len,
1404 unsigned int pref_freq)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001405{
1406 struct p2p_device *dev;
1407
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001408 p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001409 " GO Intent=%d Intended Interface Address=" MACSTR
1410 " wps_method=%d persistent_group=%d",
1411 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1412 wps_method, persistent_group);
1413
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001414 dev = p2p_get_device(p2p, peer_addr);
1415 if (dev == NULL) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001416 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001417 MAC2STR(peer_addr));
1418 return -1;
1419 }
1420
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07001421 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent ==
1422 15) < 0)
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001423 return -1;
1424
Dmitry Shmidt04949592012-07-19 12:16:46 -07001425 p2p->ssid_set = 0;
1426 if (force_ssid) {
1427 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1428 force_ssid, force_ssid_len);
1429 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1430 p2p->ssid_len = force_ssid_len;
1431 p2p->ssid_set = 1;
1432 }
1433
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001434 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1435 dev->flags &= ~P2P_DEV_USER_REJECTED;
1436 dev->go_neg_req_sent = 0;
1437 dev->go_state = UNKNOWN_GO;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001438 p2p_set_dev_persistent(dev, persistent_group);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001439 p2p->go_intent = go_intent;
1440 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1441
1442 dev->wps_method = wps_method;
1443 dev->status = P2P_SC_SUCCESS;
1444
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001445 return 0;
1446}
1447
1448
1449void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1450 struct p2p_device *dev, struct p2p_message *msg)
1451{
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08001452 os_get_reltime(&dev->last_seen);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001453
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001454 p2p_copy_wps_info(p2p, dev, 0, msg);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001455
1456 if (msg->listen_channel) {
1457 int freq;
Dmitry Shmidt4b060592013-04-29 16:42:49 -07001458 freq = p2p_channel_to_freq(msg->listen_channel[3],
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001459 msg->listen_channel[4]);
1460 if (freq < 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001461 p2p_dbg(p2p, "Unknown peer Listen channel: "
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001462 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1463 msg->listen_channel[0],
1464 msg->listen_channel[1],
1465 msg->listen_channel[2],
1466 msg->listen_channel[3],
1467 msg->listen_channel[4]);
1468 } else {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001469 p2p_dbg(p2p, "Update peer " MACSTR
1470 " Listen channel: %u -> %u MHz",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001471 MAC2STR(dev->info.p2p_device_addr),
1472 dev->listen_freq, freq);
1473 dev->listen_freq = freq;
1474 }
1475 }
1476
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001477 if (msg->wfd_subelems) {
1478 wpabuf_free(dev->info.wfd_subelems);
1479 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1480 }
1481
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001482 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1483 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001484 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001485 } else {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001486 p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001487 MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1488 "listen_freq=%d",
1489 MAC2STR(dev->info.p2p_device_addr),
1490 dev->info.dev_capab, dev->info.group_capab,
1491 dev->info.device_name, dev->listen_freq);
1492 }
1493
1494 dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1495
1496 if (dev->flags & P2P_DEV_USER_REJECTED) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001497 p2p_dbg(p2p, "Do not report rejected device");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001498 return;
1499 }
1500
1501 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1502 !(dev->flags & P2P_DEV_REPORTED_ONCE));
1503 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1504}
1505
1506
1507void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1508{
1509 os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1510 p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1511 os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1512 p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1513 *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1514}
1515
1516
1517int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1518{
1519 p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1520 p2p_random(params->passphrase, 8);
1521 return 0;
1522}
1523
1524
1525void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1526{
1527 struct p2p_go_neg_results res;
1528 int go = peer->go_state == LOCAL_GO;
1529 struct p2p_channels intersection;
1530 int freqs;
1531 size_t i, j;
1532
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001533 p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1534 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001535
1536 os_memset(&res, 0, sizeof(res));
1537 res.role_go = go;
1538 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1539 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1540 res.wps_method = peer->wps_method;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001541 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1542 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1543 res.persistent_group = 2;
1544 else
1545 res.persistent_group = 1;
1546 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001547
1548 if (go) {
1549 /* Setup AP mode for WPS provisioning */
Dmitry Shmidt4b060592013-04-29 16:42:49 -07001550 res.freq = p2p_channel_to_freq(p2p->op_reg_class,
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001551 p2p->op_channel);
1552 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1553 res.ssid_len = p2p->ssid_len;
1554 p2p_random(res.passphrase, 8);
1555 } else {
1556 res.freq = peer->oper_freq;
1557 if (p2p->ssid_len) {
1558 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1559 res.ssid_len = p2p->ssid_len;
1560 }
1561 }
1562
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07001563 p2p_channels_dump(p2p, "own channels", &p2p->channels);
1564 p2p_channels_dump(p2p, "peer channels", &peer->channels);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001565 p2p_channels_intersect(&p2p->channels, &peer->channels,
1566 &intersection);
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07001567 if (go) {
1568 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq);
1569 p2p_channels_dump(p2p, "intersection after no-GO removal",
1570 &intersection);
1571 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001572 freqs = 0;
1573 for (i = 0; i < intersection.reg_classes; i++) {
1574 struct p2p_reg_class *c = &intersection.reg_class[i];
1575 if (freqs + 1 == P2P_MAX_CHANNELS)
1576 break;
1577 for (j = 0; j < c->channels; j++) {
1578 int freq;
1579 if (freqs + 1 == P2P_MAX_CHANNELS)
1580 break;
Dmitry Shmidt4b060592013-04-29 16:42:49 -07001581 freq = p2p_channel_to_freq(c->reg_class, c->channel[j]);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001582 if (freq < 0)
1583 continue;
1584 res.freq_list[freqs++] = freq;
1585 }
1586 }
1587
1588 res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1589
1590 p2p_clear_timeout(p2p);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001591 p2p->ssid_set = 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001592 peer->go_neg_req_sent = 0;
1593 peer->wps_method = WPS_NOT_READY;
1594
1595 p2p_set_state(p2p, P2P_PROVISIONING);
1596 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1597}
1598
1599
1600static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1601 const u8 *data, size_t len, int rx_freq)
1602{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001603 p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001604 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1605
1606 if (len < 1)
1607 return;
1608
1609 switch (data[0]) {
1610 case P2P_GO_NEG_REQ:
1611 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1612 break;
1613 case P2P_GO_NEG_RESP:
1614 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1615 break;
1616 case P2P_GO_NEG_CONF:
1617 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1618 break;
1619 case P2P_INVITATION_REQ:
1620 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1621 rx_freq);
1622 break;
1623 case P2P_INVITATION_RESP:
Dmitry Shmidt051af732013-10-22 13:52:46 -07001624 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001625 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1626 break;
1627 case P2P_PROV_DISC_REQ:
1628 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1629 break;
1630 case P2P_PROV_DISC_RESP:
1631 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1632 break;
1633 case P2P_DEV_DISC_REQ:
1634 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1635 break;
1636 case P2P_DEV_DISC_RESP:
1637 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1638 break;
1639 default:
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001640 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001641 data[0]);
1642 break;
1643 }
1644}
1645
1646
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001647static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1648 const u8 *sa, const u8 *bssid, const u8 *data,
1649 size_t len, int freq)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001650{
1651 if (len < 1)
1652 return;
1653
1654 switch (data[0]) {
1655 case WLAN_PA_VENDOR_SPECIFIC:
1656 data++;
1657 len--;
1658 if (len < 3)
1659 return;
1660 if (WPA_GET_BE24(data) != OUI_WFA)
1661 return;
1662
1663 data += 3;
1664 len -= 3;
1665 if (len < 1)
1666 return;
1667
1668 if (*data != P2P_OUI_TYPE)
1669 return;
1670
1671 p2p_rx_p2p_action(p2p, sa, data + 1, len - 1, freq);
1672 break;
1673 case WLAN_PA_GAS_INITIAL_REQ:
1674 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1675 break;
1676 case WLAN_PA_GAS_INITIAL_RESP:
1677 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1678 break;
1679 case WLAN_PA_GAS_COMEBACK_REQ:
1680 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1681 break;
1682 case WLAN_PA_GAS_COMEBACK_RESP:
1683 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1684 break;
1685 }
1686}
1687
1688
1689void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1690 const u8 *bssid, u8 category,
1691 const u8 *data, size_t len, int freq)
1692{
1693 if (category == WLAN_ACTION_PUBLIC) {
1694 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1695 return;
1696 }
1697
1698 if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1699 return;
1700
1701 if (len < 4)
1702 return;
1703
1704 if (WPA_GET_BE24(data) != OUI_WFA)
1705 return;
1706 data += 3;
1707 len -= 3;
1708
1709 if (*data != P2P_OUI_TYPE)
1710 return;
1711 data++;
1712 len--;
1713
1714 /* P2P action frame */
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001715 p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001716 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1717
1718 if (len < 1)
1719 return;
1720 switch (data[0]) {
1721 case P2P_NOA:
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001722 p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001723 /* TODO */
1724 break;
1725 case P2P_PRESENCE_REQ:
1726 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1727 break;
1728 case P2P_PRESENCE_RESP:
1729 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1730 break;
1731 case P2P_GO_DISC_REQ:
1732 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1733 break;
1734 default:
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001735 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001736 break;
1737 }
1738}
1739
1740
1741static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1742{
1743 struct p2p_data *p2p = eloop_ctx;
1744 if (p2p->go_neg_peer == NULL)
1745 return;
1746 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1747 p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1748 p2p_connect_send(p2p, p2p->go_neg_peer);
1749}
1750
1751
1752static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1753{
1754 struct p2p_data *p2p = eloop_ctx;
1755 if (p2p->invite_peer == NULL)
1756 return;
1757 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1758 p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr);
1759}
1760
1761
1762static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1763 const u8 *ie, size_t ie_len)
1764{
1765 struct p2p_message msg;
1766 struct p2p_device *dev;
1767
1768 os_memset(&msg, 0, sizeof(msg));
1769 if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1770 {
1771 p2p_parse_free(&msg);
1772 return; /* not a P2P probe */
1773 }
1774
1775 if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
1776 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
1777 != 0) {
1778 /* The Probe Request is not part of P2P Device Discovery. It is
1779 * not known whether the source address of the frame is the P2P
1780 * Device Address or P2P Interface Address. Do not add a new
1781 * peer entry based on this frames.
1782 */
1783 p2p_parse_free(&msg);
1784 return;
1785 }
1786
1787 dev = p2p_get_device(p2p, addr);
1788 if (dev) {
1789 if (dev->country[0] == 0 && msg.listen_channel)
1790 os_memcpy(dev->country, msg.listen_channel, 3);
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08001791 os_get_reltime(&dev->last_seen);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001792 p2p_parse_free(&msg);
1793 return; /* already known */
1794 }
1795
1796 dev = p2p_create_device(p2p, addr);
1797 if (dev == NULL) {
1798 p2p_parse_free(&msg);
1799 return;
1800 }
1801
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08001802 os_get_reltime(&dev->last_seen);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001803 dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
1804
1805 if (msg.listen_channel) {
1806 os_memcpy(dev->country, msg.listen_channel, 3);
Dmitry Shmidt4b060592013-04-29 16:42:49 -07001807 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001808 msg.listen_channel[4]);
1809 }
1810
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001811 p2p_copy_wps_info(p2p, dev, 1, &msg);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001812
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001813 if (msg.wfd_subelems) {
1814 wpabuf_free(dev->info.wfd_subelems);
1815 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
1816 }
1817
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001818 p2p_parse_free(&msg);
1819
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001820 p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001821 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
1822 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
1823 dev->info.group_capab, dev->info.device_name,
1824 dev->listen_freq);
1825}
1826
1827
1828struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
1829 const u8 *addr,
1830 struct p2p_message *msg)
1831{
1832 struct p2p_device *dev;
1833
1834 dev = p2p_get_device(p2p, addr);
1835 if (dev) {
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08001836 os_get_reltime(&dev->last_seen);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001837 return dev; /* already known */
1838 }
1839
1840 dev = p2p_create_device(p2p, addr);
1841 if (dev == NULL)
1842 return NULL;
1843
1844 p2p_add_dev_info(p2p, addr, dev, msg);
1845
1846 return dev;
1847}
1848
1849
1850static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
1851{
1852 if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
1853 return 1;
1854 if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
1855 WPA_GET_BE32(&req_dev_type[2]) == 0 &&
1856 WPA_GET_BE16(&req_dev_type[6]) == 0)
1857 return 1; /* Category match with wildcard OUI/sub-category */
1858 return 0;
1859}
1860
1861
1862int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
1863 size_t num_req_dev_type)
1864{
1865 size_t i;
1866 for (i = 0; i < num_req_dev_type; i++) {
1867 if (dev_type_match(dev_type, req_dev_type[i]))
1868 return 1;
1869 }
1870 return 0;
1871}
1872
1873
1874/**
1875 * p2p_match_dev_type - Match local device type with requested type
1876 * @p2p: P2P module context from p2p_init()
1877 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1878 * Returns: 1 on match, 0 on mismatch
1879 *
1880 * This function can be used to match the Requested Device Type attribute in
1881 * WPS IE with the local device types for deciding whether to reply to a Probe
1882 * Request frame.
1883 */
1884int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
1885{
1886 struct wps_parse_attr attr;
1887 size_t i;
1888
1889 if (wps_parse_msg(wps, &attr))
1890 return 1; /* assume no Requested Device Type attributes */
1891
1892 if (attr.num_req_dev_type == 0)
1893 return 1; /* no Requested Device Type attributes -> match */
1894
1895 if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
1896 attr.num_req_dev_type))
1897 return 1; /* Own Primary Device Type matches */
1898
1899 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++)
1900 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
1901 attr.req_dev_type,
1902 attr.num_req_dev_type))
1903 return 1; /* Own Secondary Device Type matches */
1904
1905 /* No matching device type found */
1906 return 0;
1907}
1908
1909
1910struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
1911{
1912 struct wpabuf *buf;
1913 u8 *len;
Dmitry Shmidt04949592012-07-19 12:16:46 -07001914 int pw_id = -1;
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001915 size_t extra = 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001916
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001917#ifdef CONFIG_WIFI_DISPLAY
1918 if (p2p->wfd_ie_probe_resp)
1919 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
1920#endif /* CONFIG_WIFI_DISPLAY */
1921
1922 buf = wpabuf_alloc(1000 + extra);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001923 if (buf == NULL)
1924 return NULL;
1925
Dmitry Shmidt04949592012-07-19 12:16:46 -07001926 if (p2p->go_neg_peer) {
1927 /* Advertise immediate availability of WPS credential */
1928 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
1929 }
1930
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07001931 if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) {
1932 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response");
1933 wpabuf_free(buf);
1934 return NULL;
1935 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001936
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001937#ifdef CONFIG_WIFI_DISPLAY
1938 if (p2p->wfd_ie_probe_resp)
1939 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
1940#endif /* CONFIG_WIFI_DISPLAY */
1941
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001942 /* P2P IE */
1943 len = p2p_buf_add_ie_hdr(buf);
Dmitry Shmidt04949592012-07-19 12:16:46 -07001944 p2p_buf_add_capability(buf, p2p->dev_capab &
1945 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001946 if (p2p->ext_listen_interval)
1947 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
1948 p2p->ext_listen_interval);
1949 p2p_buf_add_device_info(buf, p2p, NULL);
1950 p2p_buf_update_ie_hdr(buf, len);
1951
1952 return buf;
1953}
1954
1955
Dmitry Shmidt04949592012-07-19 12:16:46 -07001956static enum p2p_probe_req_status
1957p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
1958 const u8 *bssid, const u8 *ie, size_t ie_len)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001959{
1960 struct ieee802_11_elems elems;
1961 struct wpabuf *buf;
1962 struct ieee80211_mgmt *resp;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001963 struct p2p_message msg;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001964 struct wpabuf *ies;
1965
1966 if (!p2p->in_listen || !p2p->drv_in_listen) {
1967 /* not in Listen state - ignore Probe Request */
Dmitry Shmidt04949592012-07-19 12:16:46 -07001968 return P2P_PREQ_NOT_LISTEN;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001969 }
1970
1971 if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
1972 ParseFailed) {
1973 /* Ignore invalid Probe Request frames */
Dmitry Shmidt04949592012-07-19 12:16:46 -07001974 return P2P_PREQ_MALFORMED;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001975 }
1976
1977 if (elems.p2p == NULL) {
1978 /* not a P2P probe - ignore it */
Dmitry Shmidt04949592012-07-19 12:16:46 -07001979 return P2P_PREQ_NOT_P2P;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001980 }
1981
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001982 if (dst && !is_broadcast_ether_addr(dst) &&
1983 os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
1984 /* Not sent to the broadcast address or our P2P Device Address
1985 */
Dmitry Shmidt04949592012-07-19 12:16:46 -07001986 return P2P_PREQ_NOT_PROCESSED;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001987 }
1988
1989 if (bssid && !is_broadcast_ether_addr(bssid)) {
1990 /* Not sent to the Wildcard BSSID */
Dmitry Shmidt04949592012-07-19 12:16:46 -07001991 return P2P_PREQ_NOT_PROCESSED;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001992 }
1993
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001994 if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
1995 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
1996 0) {
1997 /* not using P2P Wildcard SSID - ignore */
Dmitry Shmidt04949592012-07-19 12:16:46 -07001998 return P2P_PREQ_NOT_PROCESSED;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001999 }
2000
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002001 if (supp_rates_11b_only(&elems)) {
2002 /* Indicates support for 11b rates only */
Dmitry Shmidt04949592012-07-19 12:16:46 -07002003 return P2P_PREQ_NOT_P2P;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002004 }
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002005
2006 os_memset(&msg, 0, sizeof(msg));
2007 if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2008 /* Could not parse P2P attributes */
Dmitry Shmidt04949592012-07-19 12:16:46 -07002009 return P2P_PREQ_NOT_P2P;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002010 }
2011
2012 if (msg.device_id &&
Dmitry Shmidt04949592012-07-19 12:16:46 -07002013 os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002014 /* Device ID did not match */
2015 p2p_parse_free(&msg);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002016 return P2P_PREQ_NOT_PROCESSED;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002017 }
2018
2019 /* Check Requested Device Type match */
2020 if (msg.wps_attributes &&
2021 !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2022 /* No match with Requested Device Type */
2023 p2p_parse_free(&msg);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002024 return P2P_PREQ_NOT_PROCESSED;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002025 }
2026 p2p_parse_free(&msg);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002027
Dmitry Shmidt04949592012-07-19 12:16:46 -07002028 if (!p2p->cfg->send_probe_resp) {
2029 /* Response generated elsewhere */
2030 return P2P_PREQ_NOT_PROCESSED;
2031 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002032
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002033 p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002034
2035 /*
2036 * We do not really have a specific BSS that this frame is advertising,
2037 * so build a frame that has some information in valid format. This is
2038 * really only used for discovery purposes, not to learn exact BSS
2039 * parameters.
2040 */
2041 ies = p2p_build_probe_resp_ies(p2p);
2042 if (ies == NULL)
Dmitry Shmidt04949592012-07-19 12:16:46 -07002043 return P2P_PREQ_NOT_PROCESSED;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002044
2045 buf = wpabuf_alloc(200 + wpabuf_len(ies));
2046 if (buf == NULL) {
2047 wpabuf_free(ies);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002048 return P2P_PREQ_NOT_PROCESSED;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002049 }
2050
2051 resp = NULL;
2052 resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
2053
2054 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2055 (WLAN_FC_STYPE_PROBE_RESP << 4));
2056 os_memcpy(resp->da, addr, ETH_ALEN);
2057 os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2058 os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2059 resp->u.probe_resp.beacon_int = host_to_le16(100);
2060 /* hardware or low-level driver will setup seq_ctrl and timestamp */
2061 resp->u.probe_resp.capab_info =
2062 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2063 WLAN_CAPABILITY_PRIVACY |
2064 WLAN_CAPABILITY_SHORT_SLOT_TIME);
2065
2066 wpabuf_put_u8(buf, WLAN_EID_SSID);
2067 wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2068 wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2069
2070 wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2071 wpabuf_put_u8(buf, 8);
2072 wpabuf_put_u8(buf, (60 / 5) | 0x80);
2073 wpabuf_put_u8(buf, 90 / 5);
2074 wpabuf_put_u8(buf, (120 / 5) | 0x80);
2075 wpabuf_put_u8(buf, 180 / 5);
2076 wpabuf_put_u8(buf, (240 / 5) | 0x80);
2077 wpabuf_put_u8(buf, 360 / 5);
2078 wpabuf_put_u8(buf, 480 / 5);
2079 wpabuf_put_u8(buf, 540 / 5);
2080
2081 wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2082 wpabuf_put_u8(buf, 1);
2083 wpabuf_put_u8(buf, p2p->cfg->channel);
2084
2085 wpabuf_put_buf(buf, ies);
2086 wpabuf_free(ies);
2087
2088 p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
2089
2090 wpabuf_free(buf);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002091
2092 return P2P_PREQ_NOT_PROCESSED;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002093}
2094
2095
Dmitry Shmidt04949592012-07-19 12:16:46 -07002096enum p2p_probe_req_status
2097p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2098 const u8 *bssid, const u8 *ie, size_t ie_len)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002099{
Dmitry Shmidt04949592012-07-19 12:16:46 -07002100 enum p2p_probe_req_status res;
2101
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002102 p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2103
Dmitry Shmidt04949592012-07-19 12:16:46 -07002104 res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002105
2106 if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2107 p2p->go_neg_peer &&
2108 os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
Dmitry Shmidt9cdf1b92013-02-27 12:58:50 -08002109 == 0 &&
2110 !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002111 /* Received a Probe Request from GO Negotiation peer */
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002112 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
Dmitry Shmidt9cdf1b92013-02-27 12:58:50 -08002113 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002114 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002115 return P2P_PREQ_PROCESSED;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002116 }
2117
2118 if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2119 p2p->invite_peer &&
2120 os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2121 == 0) {
2122 /* Received a Probe Request from Invite peer */
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002123 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002124 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002125 return P2P_PREQ_PROCESSED;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002126 }
2127
Dmitry Shmidt04949592012-07-19 12:16:46 -07002128 return res;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002129}
2130
2131
2132static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2133 u8 *buf, size_t len, struct wpabuf *p2p_ie)
2134{
2135 struct wpabuf *tmp;
2136 u8 *lpos;
2137 size_t tmplen;
2138 int res;
2139 u8 group_capab;
2140
2141 if (p2p_ie == NULL)
2142 return 0; /* WLAN AP is not a P2P manager */
2143
2144 /*
2145 * (Re)Association Request - P2P IE
2146 * P2P Capability attribute (shall be present)
2147 * P2P Interface attribute (present if concurrent device and
2148 * P2P Management is enabled)
2149 */
2150 tmp = wpabuf_alloc(200);
2151 if (tmp == NULL)
2152 return -1;
2153
2154 lpos = p2p_buf_add_ie_hdr(tmp);
2155 group_capab = 0;
2156 if (p2p->num_groups > 0) {
2157 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2158 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2159 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2160 p2p->cross_connect)
2161 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2162 }
2163 p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2164 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2165 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2166 p2p_buf_add_p2p_interface(tmp, p2p);
2167 p2p_buf_update_ie_hdr(tmp, lpos);
2168
2169 tmplen = wpabuf_len(tmp);
2170 if (tmplen > len)
2171 res = -1;
2172 else {
2173 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2174 res = tmplen;
2175 }
2176 wpabuf_free(tmp);
2177
2178 return res;
2179}
2180
2181
2182int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2183 size_t len, int p2p_group, struct wpabuf *p2p_ie)
2184{
2185 struct wpabuf *tmp;
2186 u8 *lpos;
2187 struct p2p_device *peer;
2188 size_t tmplen;
2189 int res;
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002190 size_t extra = 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002191
2192 if (!p2p_group)
2193 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2194
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002195#ifdef CONFIG_WIFI_DISPLAY
2196 if (p2p->wfd_ie_assoc_req)
2197 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2198#endif /* CONFIG_WIFI_DISPLAY */
2199
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002200 /*
2201 * (Re)Association Request - P2P IE
2202 * P2P Capability attribute (shall be present)
2203 * Extended Listen Timing (may be present)
2204 * P2P Device Info attribute (shall be present)
2205 */
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002206 tmp = wpabuf_alloc(200 + extra);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002207 if (tmp == NULL)
2208 return -1;
2209
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002210#ifdef CONFIG_WIFI_DISPLAY
2211 if (p2p->wfd_ie_assoc_req)
2212 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2213#endif /* CONFIG_WIFI_DISPLAY */
2214
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002215 peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2216
2217 lpos = p2p_buf_add_ie_hdr(tmp);
2218 p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2219 if (p2p->ext_listen_interval)
2220 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2221 p2p->ext_listen_interval);
2222 p2p_buf_add_device_info(tmp, p2p, peer);
2223 p2p_buf_update_ie_hdr(tmp, lpos);
2224
2225 tmplen = wpabuf_len(tmp);
2226 if (tmplen > len)
2227 res = -1;
2228 else {
2229 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2230 res = tmplen;
2231 }
2232 wpabuf_free(tmp);
2233
2234 return res;
2235}
2236
2237
2238int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2239{
2240 struct wpabuf *p2p_ie;
2241 int ret;
2242
2243 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2244 if (p2p_ie == NULL)
2245 return 0;
2246
2247 ret = p2p_attr_text(p2p_ie, buf, end);
2248 wpabuf_free(p2p_ie);
2249 return ret;
2250}
2251
2252
Dmitry Shmidt04949592012-07-19 12:16:46 -07002253int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2254{
2255 struct p2p_message msg;
2256
2257 os_memset(&msg, 0, sizeof(msg));
2258 if (p2p_parse_p2p_ie(p2p_ie, &msg))
2259 return -1;
2260
2261 if (msg.p2p_device_addr) {
2262 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2263 return 0;
2264 } else if (msg.device_id) {
2265 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2266 return 0;
2267 }
2268 return -1;
2269}
2270
2271
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08002272int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2273{
2274 struct wpabuf *p2p_ie;
Dmitry Shmidt04949592012-07-19 12:16:46 -07002275 int ret;
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08002276
2277 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2278 P2P_IE_VENDOR_TYPE);
2279 if (p2p_ie == NULL)
2280 return -1;
Dmitry Shmidt04949592012-07-19 12:16:46 -07002281 ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08002282 wpabuf_free(p2p_ie);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002283 return ret;
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08002284}
2285
2286
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002287static void p2p_clear_go_neg(struct p2p_data *p2p)
2288{
2289 p2p->go_neg_peer = NULL;
2290 p2p_clear_timeout(p2p);
2291 p2p_set_state(p2p, P2P_IDLE);
2292}
2293
2294
2295void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2296{
2297 if (p2p->go_neg_peer == NULL) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002298 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002299 return; /* No pending Group Formation */
2300 }
2301
2302 if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2303 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002304 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2305 MACSTR " (GO Negotiation peer " MACSTR ")",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002306 MAC2STR(mac_addr),
2307 MAC2STR(p2p->go_neg_peer->intended_addr));
2308 return; /* Ignore unexpected peer address */
2309 }
2310
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002311 p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002312 MAC2STR(mac_addr));
2313
2314 p2p_clear_go_neg(p2p);
2315}
2316
2317
2318void p2p_group_formation_failed(struct p2p_data *p2p)
2319{
2320 if (p2p->go_neg_peer == NULL) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002321 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002322 return; /* No pending Group Formation */
2323 }
2324
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002325 p2p_dbg(p2p, "Group Formation failed with " MACSTR,
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002326 MAC2STR(p2p->go_neg_peer->intended_addr));
2327
2328 p2p_clear_go_neg(p2p);
2329}
2330
2331
2332struct p2p_data * p2p_init(const struct p2p_config *cfg)
2333{
2334 struct p2p_data *p2p;
2335
2336 if (cfg->max_peers < 1)
2337 return NULL;
2338
2339 p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2340 if (p2p == NULL)
2341 return NULL;
2342 p2p->cfg = (struct p2p_config *) (p2p + 1);
2343 os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2344 if (cfg->dev_name)
2345 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2346 if (cfg->manufacturer)
2347 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2348 if (cfg->model_name)
2349 p2p->cfg->model_name = os_strdup(cfg->model_name);
2350 if (cfg->model_number)
2351 p2p->cfg->model_number = os_strdup(cfg->model_number);
2352 if (cfg->serial_number)
2353 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002354 if (cfg->pref_chan) {
2355 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2356 sizeof(struct p2p_channel));
2357 if (p2p->cfg->pref_chan) {
2358 os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2359 cfg->num_pref_chan *
2360 sizeof(struct p2p_channel));
2361 } else
2362 p2p->cfg->num_pref_chan = 0;
2363 }
2364
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002365 p2p->min_disc_int = 1;
2366 p2p->max_disc_int = 3;
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08002367 p2p->max_disc_tu = -1;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002368
2369 os_get_random(&p2p->next_tie_breaker, 1);
2370 p2p->next_tie_breaker &= 0x01;
2371 if (cfg->sd_request)
2372 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2373 p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2374 if (cfg->concurrent_operations)
2375 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2376 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2377
2378 dl_list_init(&p2p->devices);
2379
2380 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2381 p2p_expiration_timeout, p2p, NULL);
2382
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002383 p2p->go_timeout = 100;
2384 p2p->client_timeout = 20;
2385
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07002386 p2p_dbg(p2p, "initialized");
2387 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2388 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2389
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002390 return p2p;
2391}
2392
2393
2394void p2p_deinit(struct p2p_data *p2p)
2395{
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002396#ifdef CONFIG_WIFI_DISPLAY
2397 wpabuf_free(p2p->wfd_ie_beacon);
2398 wpabuf_free(p2p->wfd_ie_probe_req);
2399 wpabuf_free(p2p->wfd_ie_probe_resp);
2400 wpabuf_free(p2p->wfd_ie_assoc_req);
2401 wpabuf_free(p2p->wfd_ie_invitation);
2402 wpabuf_free(p2p->wfd_ie_prov_disc_req);
2403 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2404 wpabuf_free(p2p->wfd_ie_go_neg);
2405 wpabuf_free(p2p->wfd_dev_info);
2406 wpabuf_free(p2p->wfd_assoc_bssid);
2407 wpabuf_free(p2p->wfd_coupled_sink_info);
2408#endif /* CONFIG_WIFI_DISPLAY */
2409
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002410 eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2411 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2412 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
Dmitry Shmidt9cdf1b92013-02-27 12:58:50 -08002413 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002414 p2p_flush(p2p);
2415 p2p_free_req_dev_types(p2p);
2416 os_free(p2p->cfg->dev_name);
2417 os_free(p2p->cfg->manufacturer);
2418 os_free(p2p->cfg->model_name);
2419 os_free(p2p->cfg->model_number);
2420 os_free(p2p->cfg->serial_number);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002421 os_free(p2p->cfg->pref_chan);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002422 os_free(p2p->groups);
2423 wpabuf_free(p2p->sd_resp);
2424 os_free(p2p->after_scan_tx);
2425 p2p_remove_wps_vendor_extensions(p2p);
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07002426 os_free(p2p->no_go_freq.range);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002427 os_free(p2p);
2428}
2429
2430
2431void p2p_flush(struct p2p_data *p2p)
2432{
2433 struct p2p_device *dev, *prev;
Dmitry Shmidt04949592012-07-19 12:16:46 -07002434 p2p_stop_find(p2p);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002435 dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2436 list) {
2437 dl_list_del(&dev->list);
2438 p2p_device_free(p2p, dev);
2439 }
2440 p2p_free_sd_queries(p2p);
2441 os_free(p2p->after_scan_tx);
2442 p2p->after_scan_tx = NULL;
2443}
2444
2445
2446int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2447{
2448 struct p2p_device *dev;
2449
2450 dev = p2p_get_device(p2p, addr);
2451 if (dev == NULL)
2452 return -1;
2453
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002454 p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002455
2456 if (p2p->go_neg_peer == dev)
2457 p2p->go_neg_peer = NULL;
2458
2459 dev->wps_method = WPS_NOT_READY;
2460 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2461 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2462
2463 /* Check if after_scan_tx is for this peer. If so free it */
2464 if (p2p->after_scan_tx &&
2465 os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2466 os_free(p2p->after_scan_tx);
2467 p2p->after_scan_tx = NULL;
2468 }
2469
2470 return 0;
2471}
2472
2473
2474int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2475{
2476 os_free(p2p->cfg->dev_name);
2477 if (dev_name) {
2478 p2p->cfg->dev_name = os_strdup(dev_name);
2479 if (p2p->cfg->dev_name == NULL)
2480 return -1;
2481 } else
2482 p2p->cfg->dev_name = NULL;
2483 return 0;
2484}
2485
2486
2487int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
2488{
2489 os_free(p2p->cfg->manufacturer);
2490 p2p->cfg->manufacturer = NULL;
2491 if (manufacturer) {
2492 p2p->cfg->manufacturer = os_strdup(manufacturer);
2493 if (p2p->cfg->manufacturer == NULL)
2494 return -1;
2495 }
2496
2497 return 0;
2498}
2499
2500
2501int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
2502{
2503 os_free(p2p->cfg->model_name);
2504 p2p->cfg->model_name = NULL;
2505 if (model_name) {
2506 p2p->cfg->model_name = os_strdup(model_name);
2507 if (p2p->cfg->model_name == NULL)
2508 return -1;
2509 }
2510
2511 return 0;
2512}
2513
2514
2515int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
2516{
2517 os_free(p2p->cfg->model_number);
2518 p2p->cfg->model_number = NULL;
2519 if (model_number) {
2520 p2p->cfg->model_number = os_strdup(model_number);
2521 if (p2p->cfg->model_number == NULL)
2522 return -1;
2523 }
2524
2525 return 0;
2526}
2527
2528
2529int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
2530{
2531 os_free(p2p->cfg->serial_number);
2532 p2p->cfg->serial_number = NULL;
2533 if (serial_number) {
2534 p2p->cfg->serial_number = os_strdup(serial_number);
2535 if (p2p->cfg->serial_number == NULL)
2536 return -1;
2537 }
2538
2539 return 0;
2540}
2541
2542
2543void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
2544{
2545 p2p->cfg->config_methods = config_methods;
2546}
2547
2548
2549void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
2550{
2551 os_memcpy(p2p->cfg->uuid, uuid, 16);
2552}
2553
2554
2555int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
2556{
2557 os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
2558 return 0;
2559}
2560
2561
2562int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
2563 size_t num_dev_types)
2564{
2565 if (num_dev_types > P2P_SEC_DEVICE_TYPES)
2566 num_dev_types = P2P_SEC_DEVICE_TYPES;
2567 p2p->cfg->num_sec_dev_types = num_dev_types;
2568 os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
2569 return 0;
2570}
2571
2572
2573void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
2574{
2575 int i;
2576
2577 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2578 wpabuf_free(p2p->wps_vendor_ext[i]);
2579 p2p->wps_vendor_ext[i] = NULL;
2580 }
2581}
2582
2583
2584int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2585 const struct wpabuf *vendor_ext)
2586{
2587 int i;
2588
2589 if (vendor_ext == NULL)
2590 return -1;
2591
2592 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2593 if (p2p->wps_vendor_ext[i] == NULL)
2594 break;
2595 }
2596 if (i >= P2P_MAX_WPS_VENDOR_EXT)
2597 return -1;
2598
2599 p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
2600 if (p2p->wps_vendor_ext[i] == NULL)
2601 return -1;
2602
2603 return 0;
2604}
2605
2606
2607int p2p_set_country(struct p2p_data *p2p, const char *country)
2608{
2609 os_memcpy(p2p->cfg->country, country, 3);
2610 return 0;
2611}
2612
2613
2614void p2p_continue_find(struct p2p_data *p2p)
2615{
2616 struct p2p_device *dev;
2617 p2p_set_state(p2p, P2P_SEARCH);
2618 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2619 if (dev->flags & P2P_DEV_SD_SCHEDULE) {
2620 if (p2p_start_sd(p2p, dev) == 0)
2621 return;
2622 else
2623 break;
2624 } else if (dev->req_config_methods &&
2625 !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002626 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002627 MACSTR " (config methods 0x%x)",
2628 MAC2STR(dev->info.p2p_device_addr),
2629 dev->req_config_methods);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002630 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002631 return;
2632 }
2633 }
2634
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08002635 p2p_listen_in_find(p2p, 1);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002636}
2637
2638
2639static void p2p_sd_cb(struct p2p_data *p2p, int success)
2640{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002641 p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002642 success);
2643 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2644
2645 if (!success) {
2646 if (p2p->sd_peer) {
2647 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
2648 p2p->sd_peer = NULL;
2649 }
2650 p2p_continue_find(p2p);
2651 return;
2652 }
2653
2654 if (p2p->sd_peer == NULL) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002655 p2p_dbg(p2p, "No SD peer entry known");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002656 p2p_continue_find(p2p);
2657 return;
2658 }
2659
2660 /* Wait for response from the peer */
2661 p2p_set_state(p2p, P2P_SD_DURING_FIND);
2662 p2p_set_timeout(p2p, 0, 200000);
2663}
2664
Jouni Malinen75ecf522011-06-27 15:19:46 -07002665
2666/**
2667 * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
2668 * @p2p: P2P module context from p2p_init()
2669 */
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002670static void p2p_retry_pd(struct p2p_data *p2p)
Jouni Malinen75ecf522011-06-27 15:19:46 -07002671{
2672 struct p2p_device *dev;
2673
2674 if (p2p->state != P2P_IDLE)
2675 return;
2676
2677 /*
2678 * Retry the prov disc req attempt only for the peer that the user had
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08002679 * requested.
Jouni Malinen75ecf522011-06-27 15:19:46 -07002680 */
2681
2682 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2683 if (os_memcmp(p2p->pending_pd_devaddr,
2684 dev->info.p2p_device_addr, ETH_ALEN) != 0)
2685 continue;
2686 if (!dev->req_config_methods)
2687 continue;
Jouni Malinen75ecf522011-06-27 15:19:46 -07002688
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002689 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
Jouni Malinen75ecf522011-06-27 15:19:46 -07002690 MACSTR " (config methods 0x%x)",
2691 MAC2STR(dev->info.p2p_device_addr),
2692 dev->req_config_methods);
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08002693 p2p_send_prov_disc_req(p2p, dev,
Dmitry Shmidt051af732013-10-22 13:52:46 -07002694 dev->flags & P2P_DEV_PD_FOR_JOIN,
2695 p2p->pd_force_freq);
Jouni Malinen75ecf522011-06-27 15:19:46 -07002696 return;
2697 }
2698}
2699
2700
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002701static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
2702{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002703 p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002704 success);
Jouni Malinen75ecf522011-06-27 15:19:46 -07002705
2706 /*
2707 * Postpone resetting the pending action state till after we actually
2708 * time out. This allows us to take some action like notifying any
2709 * interested parties about no response to the request.
2710 *
2711 * When the timer (below) goes off we check in IDLE, SEARCH, or
2712 * LISTEN_ONLY state, which are the only allowed states to issue a PD
2713 * requests in, if this was still pending and then raise notification.
2714 */
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002715
2716 if (!success) {
Jouni Malinen75ecf522011-06-27 15:19:46 -07002717 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2718
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002719 if (p2p->user_initiated_pd &&
2720 (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
2721 {
2722 /* Retry request from timeout to avoid busy loops */
2723 p2p->pending_action_state = P2P_PENDING_PD;
2724 p2p_set_timeout(p2p, 0, 50000);
2725 } else if (p2p->state != P2P_IDLE)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002726 p2p_continue_find(p2p);
Jouni Malinen75ecf522011-06-27 15:19:46 -07002727 else if (p2p->user_initiated_pd) {
2728 p2p->pending_action_state = P2P_PENDING_PD;
2729 p2p_set_timeout(p2p, 0, 300000);
2730 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002731 return;
2732 }
2733
Jouni Malinen75ecf522011-06-27 15:19:46 -07002734 /*
2735 * This postponing, of resetting pending_action_state, needs to be
2736 * done only for user initiated PD requests and not internal ones.
2737 */
2738 if (p2p->user_initiated_pd)
2739 p2p->pending_action_state = P2P_PENDING_PD;
2740 else
2741 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2742
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002743 /* Wait for response from the peer */
2744 if (p2p->state == P2P_SEARCH)
2745 p2p_set_state(p2p, P2P_PD_DURING_FIND);
2746 p2p_set_timeout(p2p, 0, 200000);
2747}
2748
2749
2750int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002751 struct os_reltime *rx_time, int level, const u8 *ies,
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08002752 size_t ies_len)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002753{
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002754 if (os_reltime_before(rx_time, &p2p->find_start)) {
Dmitry Shmidtf8623282013-02-20 14:34:59 -08002755 /*
2756 * The driver may have cached (e.g., in cfg80211 BSS table) the
2757 * scan results for relatively long time. To avoid reporting
2758 * stale information, update P2P peers only based on results
2759 * that have based on frames received after the last p2p_find
2760 * operation was started.
2761 */
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002762 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
2763 " (rx_time=%u.%06u)",
Dmitry Shmidtf8623282013-02-20 14:34:59 -08002764 MAC2STR(bssid), (unsigned int) rx_time->sec,
2765 (unsigned int) rx_time->usec);
2766 return 0;
2767 }
2768
2769 p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002770
2771 return 0;
2772}
2773
2774
2775void p2p_scan_res_handled(struct p2p_data *p2p)
2776{
2777 if (!p2p->p2p_scan_running) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002778 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002779 }
2780 p2p->p2p_scan_running = 0;
2781 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2782
2783 if (p2p_run_after_scan(p2p))
2784 return;
2785 if (p2p->state == P2P_SEARCH)
2786 p2p_continue_find(p2p);
2787}
2788
2789
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08002790void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002791{
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002792 u8 *len;
2793
2794#ifdef CONFIG_WIFI_DISPLAY
2795 if (p2p->wfd_ie_probe_req)
2796 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
2797#endif /* CONFIG_WIFI_DISPLAY */
2798
2799 len = p2p_buf_add_ie_hdr(ies);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002800 p2p_buf_add_capability(ies, p2p->dev_capab &
2801 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08002802 if (dev_id)
2803 p2p_buf_add_device_id(ies, dev_id);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002804 if (p2p->cfg->reg_class && p2p->cfg->channel)
2805 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
2806 p2p->cfg->reg_class,
2807 p2p->cfg->channel);
2808 if (p2p->ext_listen_interval)
2809 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
2810 p2p->ext_listen_interval);
2811 /* TODO: p2p_buf_add_operating_channel() if GO */
2812 p2p_buf_update_ie_hdr(ies, len);
2813}
2814
2815
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002816size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
2817{
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002818 size_t len = 100;
2819
2820#ifdef CONFIG_WIFI_DISPLAY
2821 if (p2p && p2p->wfd_ie_probe_req)
2822 len += wpabuf_len(p2p->wfd_ie_probe_req);
2823#endif /* CONFIG_WIFI_DISPLAY */
2824
2825 return len;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002826}
2827
2828
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002829int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
2830{
2831 return p2p_attr_text(p2p_ie, buf, end);
2832}
2833
2834
2835static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
2836{
2837 struct p2p_device *dev = p2p->go_neg_peer;
Dmitry Shmidt8c652892013-03-01 10:14:01 -08002838 int timeout;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002839
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002840 p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002841
2842 if (dev == NULL) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002843 p2p_dbg(p2p, "No pending GO Negotiation");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002844 return;
2845 }
2846
2847 if (success) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002848 if (dev->flags & P2P_DEV_USER_REJECTED) {
2849 p2p_set_state(p2p, P2P_IDLE);
2850 return;
2851 }
Dmitry Shmidt04949592012-07-19 12:16:46 -07002852 } else if (dev->go_neg_req_sent) {
2853 /* Cancel the increment from p2p_connect_send() on failure */
Dmitry Shmidt98f9e762012-05-30 11:18:46 -07002854 dev->go_neg_req_sent--;
2855 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002856
2857 if (!success &&
2858 (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
2859 !is_zero_ether_addr(dev->member_in_go_dev)) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002860 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002861 MAC2STR(dev->info.p2p_device_addr));
2862 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2863 p2p_send_dev_disc_req(p2p, dev);
2864 return;
2865 }
2866
2867 /*
2868 * Use P2P find, if needed, to find the other device from its listen
2869 * channel.
2870 */
2871 p2p_set_state(p2p, P2P_CONNECT);
Dmitry Shmidt8c652892013-03-01 10:14:01 -08002872 timeout = success ? 500000 : 100000;
2873 if (!success && p2p->go_neg_peer &&
2874 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
2875 unsigned int r;
2876 /*
2877 * Peer is expected to wait our response and we will skip the
2878 * listen phase. Add some randomness to the wait time here to
2879 * make it less likely to hit cases where we could end up in
2880 * sync with peer not listening.
2881 */
2882 os_get_random((u8 *) &r, sizeof(r));
2883 timeout += r % 100000;
2884 }
2885 p2p_set_timeout(p2p, 0, timeout);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002886}
2887
2888
2889static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
2890{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002891 p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002892 success);
2893 if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002894 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002895 return;
2896 }
2897 p2p_set_state(p2p, P2P_CONNECT);
Dmitry Shmidt8c652892013-03-01 10:14:01 -08002898 p2p_set_timeout(p2p, 0, 500000);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002899}
2900
2901
Dmitry Shmidt4b060592013-04-29 16:42:49 -07002902static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
2903 const u8 *addr)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002904{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002905 p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002906 if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
2907 p2p_go_neg_failed(p2p, p2p->go_neg_peer,
2908 p2p->go_neg_peer->status);
Dmitry Shmidt4b060592013-04-29 16:42:49 -07002909 } else if (success) {
2910 struct p2p_device *dev;
2911 dev = p2p_get_device(p2p, addr);
2912 if (dev &&
2913 dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
2914 dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002915 }
2916}
2917
2918
2919static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
2920 enum p2p_send_action_result result)
2921{
2922 struct p2p_device *dev;
2923
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002924 p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002925 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2926 if (result == P2P_SEND_ACTION_FAILED) {
2927 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2928 return;
2929 }
2930 if (result == P2P_SEND_ACTION_NO_ACK) {
2931 /*
2932 * It looks like the TX status for GO Negotiation Confirm is
2933 * often showing failure even when the peer has actually
2934 * received the frame. Since the peer may change channels
2935 * immediately after having received the frame, we may not see
2936 * an Ack for retries, so just dropping a single frame may
2937 * trigger this. To allow the group formation to succeed if the
2938 * peer did indeed receive the frame, continue regardless of
2939 * the TX status.
2940 */
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002941 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002942 }
2943
2944 dev = p2p->go_neg_peer;
2945 if (dev == NULL)
2946 return;
2947
2948 p2p_go_complete(p2p, dev);
2949}
2950
2951
2952void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
2953 const u8 *src, const u8 *bssid,
2954 enum p2p_send_action_result result)
2955{
2956 enum p2p_pending_action_state state;
2957 int success;
2958
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002959 p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002960 " src=" MACSTR " bssid=" MACSTR " result=%d",
2961 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
2962 MAC2STR(bssid), result);
2963 success = result == P2P_SEND_ACTION_SUCCESS;
2964 state = p2p->pending_action_state;
2965 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2966 switch (state) {
2967 case P2P_NO_PENDING_ACTION:
Dmitry Shmidt8da800a2013-04-24 12:57:01 -07002968 if (p2p->after_scan_tx_in_progress) {
2969 p2p->after_scan_tx_in_progress = 0;
2970 if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
2971 p2p_run_after_scan(p2p))
2972 break;
2973 if (p2p->state == P2P_SEARCH) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002974 p2p_dbg(p2p, "Continue find after after_scan_tx completion");
Dmitry Shmidt8da800a2013-04-24 12:57:01 -07002975 p2p_continue_find(p2p);
2976 }
2977 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002978 break;
2979 case P2P_PENDING_GO_NEG_REQUEST:
2980 p2p_go_neg_req_cb(p2p, success);
2981 break;
2982 case P2P_PENDING_GO_NEG_RESPONSE:
2983 p2p_go_neg_resp_cb(p2p, success);
2984 break;
2985 case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
Dmitry Shmidt4b060592013-04-29 16:42:49 -07002986 p2p_go_neg_resp_failure_cb(p2p, success, dst);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002987 break;
2988 case P2P_PENDING_GO_NEG_CONFIRM:
2989 p2p_go_neg_conf_cb(p2p, result);
2990 break;
2991 case P2P_PENDING_SD:
2992 p2p_sd_cb(p2p, success);
2993 break;
2994 case P2P_PENDING_PD:
2995 p2p_prov_disc_cb(p2p, success);
2996 break;
2997 case P2P_PENDING_INVITATION_REQUEST:
2998 p2p_invitation_req_cb(p2p, success);
2999 break;
3000 case P2P_PENDING_INVITATION_RESPONSE:
3001 p2p_invitation_resp_cb(p2p, success);
3002 break;
3003 case P2P_PENDING_DEV_DISC_REQUEST:
3004 p2p_dev_disc_req_cb(p2p, success);
3005 break;
3006 case P2P_PENDING_DEV_DISC_RESPONSE:
3007 p2p_dev_disc_resp_cb(p2p, success);
3008 break;
3009 case P2P_PENDING_GO_DISC_REQ:
3010 p2p_go_disc_req_cb(p2p, success);
3011 break;
3012 }
Dmitry Shmidt8da800a2013-04-24 12:57:01 -07003013
3014 p2p->after_scan_tx_in_progress = 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003015}
3016
3017
3018void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3019 unsigned int duration)
3020{
3021 if (freq == p2p->pending_client_disc_freq) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003022 p2p_dbg(p2p, "Client discoverability remain-awake completed");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003023 p2p->pending_client_disc_freq = 0;
3024 return;
3025 }
3026
3027 if (freq != p2p->pending_listen_freq) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003028 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003029 freq, duration, p2p->pending_listen_freq);
3030 return;
3031 }
3032
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003033 p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003034 p2p->pending_listen_sec, p2p->pending_listen_usec,
3035 p2p->pending_listen_freq);
3036 p2p->in_listen = 1;
3037 p2p->drv_in_listen = freq;
3038 if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3039 /*
3040 * Add 20 msec extra wait to avoid race condition with driver
3041 * remain-on-channel end event, i.e., give driver more time to
3042 * complete the operation before our timeout expires.
3043 */
3044 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3045 p2p->pending_listen_usec + 20000);
3046 }
3047
3048 p2p->pending_listen_freq = 0;
3049}
3050
3051
3052int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3053{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003054 p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003055 p2p->drv_in_listen = 0;
3056 if (p2p->in_listen)
3057 return 0; /* Internal timeout will trigger the next step */
3058
3059 if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3060 if (p2p->go_neg_peer->connect_reqs >= 120) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003061 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003062 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3063 return 0;
3064 }
3065
3066 p2p_set_state(p2p, P2P_CONNECT);
3067 p2p_connect_send(p2p, p2p->go_neg_peer);
3068 return 1;
3069 } else if (p2p->state == P2P_SEARCH) {
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08003070 if (p2p->p2p_scan_running) {
3071 /*
3072 * Search is already in progress. This can happen if
3073 * an Action frame RX is reported immediately after
3074 * the end of a remain-on-channel operation and the
3075 * response frame to that is sent using an offchannel
3076 * operation while in p2p_find. Avoid an attempt to
3077 * restart a scan here.
3078 */
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003079 p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08003080 return 1;
3081 }
Dmitry Shmidt04949592012-07-19 12:16:46 -07003082 if (p2p->pending_listen_freq) {
3083 /*
3084 * Better wait a bit if the driver is unable to start
3085 * offchannel operation for some reason. p2p_search()
3086 * will be started from internal timeout.
3087 */
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003088 p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
Dmitry Shmidt04949592012-07-19 12:16:46 -07003089 p2p_set_timeout(p2p, 0, 100000);
3090 return 1;
3091 }
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07003092 if (p2p->search_delay) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003093 p2p_dbg(p2p, "Delay search operation by %u ms",
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07003094 p2p->search_delay);
3095 p2p_set_timeout(p2p, p2p->search_delay / 1000,
3096 (p2p->search_delay % 1000) * 1000);
3097 return 1;
3098 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003099 p2p_search(p2p);
3100 return 1;
3101 }
3102
3103 return 0;
3104}
3105
3106
3107static void p2p_timeout_connect(struct p2p_data *p2p)
3108{
3109 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
Dmitry Shmidt04949592012-07-19 12:16:46 -07003110 if (p2p->go_neg_peer &&
3111 (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003112 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
Dmitry Shmidt04949592012-07-19 12:16:46 -07003113 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3114 return;
3115 }
Dmitry Shmidt8c652892013-03-01 10:14:01 -08003116 if (p2p->go_neg_peer &&
3117 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3118 p2p->go_neg_peer->connect_reqs < 120) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003119 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
Dmitry Shmidt8c652892013-03-01 10:14:01 -08003120 p2p_connect_send(p2p, p2p->go_neg_peer);
3121 return;
3122 }
3123
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003124 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08003125 p2p_listen_in_find(p2p, 0);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003126}
3127
3128
3129static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3130{
3131 if (p2p->go_neg_peer) {
3132 if (p2p->drv_in_listen) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003133 p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003134 return;
3135 }
3136
3137 if (p2p->go_neg_peer->connect_reqs >= 120) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003138 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003139 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3140 return;
3141 }
3142
3143 p2p_set_state(p2p, P2P_CONNECT);
3144 p2p_connect_send(p2p, p2p->go_neg_peer);
3145 } else
3146 p2p_set_state(p2p, P2P_IDLE);
3147}
3148
3149
3150static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3151{
3152 /*
3153 * TODO: could remain constantly in Listen state for some time if there
3154 * are no other concurrent uses for the radio. For now, go to listen
3155 * state once per second to give other uses a chance to use the radio.
3156 */
3157 p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003158 p2p_set_timeout(p2p, 0, 500000);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003159}
3160
3161
3162static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3163{
3164 struct p2p_device *dev = p2p->go_neg_peer;
3165
3166 if (dev == NULL) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003167 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003168 return;
3169 }
3170
3171 dev->wait_count++;
3172 if (dev->wait_count >= 120) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003173 p2p_dbg(p2p, "Timeout on waiting peer to become ready for GO Negotiation");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003174 p2p_go_neg_failed(p2p, dev, -1);
3175 return;
3176 }
3177
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003178 p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003179 p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08003180 p2p_listen_in_find(p2p, 0);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003181}
3182
3183
3184static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3185{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003186 p2p_dbg(p2p, "Service Discovery Query timeout");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003187 if (p2p->sd_peer) {
3188 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3189 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
3190 p2p->sd_peer = NULL;
3191 }
3192 p2p_continue_find(p2p);
3193}
3194
3195
3196static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3197{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003198 p2p_dbg(p2p, "Provision Discovery Request timeout");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003199 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3200 p2p_continue_find(p2p);
3201}
3202
3203
Jouni Malinen75ecf522011-06-27 15:19:46 -07003204static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3205{
3206 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3207
3208 /*
3209 * For user initiated PD requests that we have not gotten any responses
3210 * for while in IDLE state, we retry them a couple of times before
3211 * giving up.
3212 */
3213 if (!p2p->user_initiated_pd)
3214 return;
3215
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003216 p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
Jouni Malinen75ecf522011-06-27 15:19:46 -07003217
3218 if (p2p->pd_retries) {
3219 p2p->pd_retries--;
3220 p2p_retry_pd(p2p);
3221 } else {
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08003222 struct p2p_device *dev;
3223 int for_join = 0;
3224
3225 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3226 if (os_memcmp(p2p->pending_pd_devaddr,
3227 dev->info.p2p_device_addr, ETH_ALEN) != 0)
3228 continue;
3229 if (dev->req_config_methods &&
3230 (dev->flags & P2P_DEV_PD_FOR_JOIN))
3231 for_join = 1;
3232 }
3233
Jouni Malinen75ecf522011-06-27 15:19:46 -07003234 if (p2p->cfg->prov_disc_fail)
3235 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
3236 p2p->pending_pd_devaddr,
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08003237 for_join ?
3238 P2P_PROV_DISC_TIMEOUT_JOIN :
Jouni Malinen75ecf522011-06-27 15:19:46 -07003239 P2P_PROV_DISC_TIMEOUT);
3240 p2p_reset_pending_pd(p2p);
3241 }
3242}
3243
3244
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003245static void p2p_timeout_invite(struct p2p_data *p2p)
3246{
3247 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3248 p2p_set_state(p2p, P2P_INVITE_LISTEN);
3249 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
3250 /*
3251 * Better remain on operating channel instead of listen channel
3252 * when running a group.
3253 */
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003254 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003255 p2p_set_timeout(p2p, 0, 100000);
3256 return;
3257 }
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08003258 p2p_listen_in_find(p2p, 0);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003259}
3260
3261
3262static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3263{
3264 if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3265 p2p_set_state(p2p, P2P_INVITE);
3266 p2p_invite_send(p2p, p2p->invite_peer,
3267 p2p->invite_go_dev_addr);
3268 } else {
3269 if (p2p->invite_peer) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003270 p2p_dbg(p2p, "Invitation Request retry limit reached");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003271 if (p2p->cfg->invitation_result)
3272 p2p->cfg->invitation_result(
Dmitry Shmidt700a1372013-03-15 14:14:44 -07003273 p2p->cfg->cb_ctx, -1, NULL, NULL,
Dmitry Shmidte0e48dc2013-11-18 12:00:06 -08003274 p2p->invite_peer->info.p2p_device_addr,
3275 0);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003276 }
3277 p2p_set_state(p2p, P2P_IDLE);
3278 }
3279}
3280
3281
3282static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3283{
3284 struct p2p_data *p2p = eloop_ctx;
3285
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003286 p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003287
3288 p2p->in_listen = 0;
3289
3290 switch (p2p->state) {
3291 case P2P_IDLE:
Jouni Malinen75ecf522011-06-27 15:19:46 -07003292 /* Check if we timed out waiting for PD req */
3293 if (p2p->pending_action_state == P2P_PENDING_PD)
3294 p2p_timeout_prov_disc_req(p2p);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003295 break;
3296 case P2P_SEARCH:
Jouni Malinen75ecf522011-06-27 15:19:46 -07003297 /* Check if we timed out waiting for PD req */
3298 if (p2p->pending_action_state == P2P_PENDING_PD)
3299 p2p_timeout_prov_disc_req(p2p);
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07003300 if (p2p->search_delay && !p2p->in_search_delay) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003301 p2p_dbg(p2p, "Delay search operation by %u ms",
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07003302 p2p->search_delay);
3303 p2p->in_search_delay = 1;
3304 p2p_set_timeout(p2p, p2p->search_delay / 1000,
3305 (p2p->search_delay % 1000) * 1000);
3306 break;
3307 }
3308 p2p->in_search_delay = 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003309 p2p_search(p2p);
3310 break;
3311 case P2P_CONNECT:
3312 p2p_timeout_connect(p2p);
3313 break;
3314 case P2P_CONNECT_LISTEN:
3315 p2p_timeout_connect_listen(p2p);
3316 break;
3317 case P2P_GO_NEG:
3318 break;
3319 case P2P_LISTEN_ONLY:
Jouni Malinen75ecf522011-06-27 15:19:46 -07003320 /* Check if we timed out waiting for PD req */
3321 if (p2p->pending_action_state == P2P_PENDING_PD)
3322 p2p_timeout_prov_disc_req(p2p);
3323
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003324 if (p2p->ext_listen_only) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003325 p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003326 p2p->ext_listen_only = 0;
3327 p2p_set_state(p2p, P2P_IDLE);
3328 }
3329 break;
3330 case P2P_WAIT_PEER_CONNECT:
3331 p2p_timeout_wait_peer_connect(p2p);
3332 break;
3333 case P2P_WAIT_PEER_IDLE:
3334 p2p_timeout_wait_peer_idle(p2p);
3335 break;
3336 case P2P_SD_DURING_FIND:
3337 p2p_timeout_sd_during_find(p2p);
3338 break;
3339 case P2P_PROVISIONING:
3340 break;
3341 case P2P_PD_DURING_FIND:
3342 p2p_timeout_prov_disc_during_find(p2p);
3343 break;
3344 case P2P_INVITE:
3345 p2p_timeout_invite(p2p);
3346 break;
3347 case P2P_INVITE_LISTEN:
3348 p2p_timeout_invite_listen(p2p);
3349 break;
3350 }
3351}
3352
3353
3354int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
3355{
3356 struct p2p_device *dev;
3357
3358 dev = p2p_get_device(p2p, peer_addr);
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003359 p2p_dbg(p2p, "Local request to reject connection attempts by peer "
3360 MACSTR, MAC2STR(peer_addr));
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003361 if (dev == NULL) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003362 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003363 return -1;
3364 }
3365 dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
3366 dev->flags |= P2P_DEV_USER_REJECTED;
3367 return 0;
3368}
3369
3370
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003371const char * p2p_wps_method_text(enum p2p_wps_method method)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003372{
3373 switch (method) {
3374 case WPS_NOT_READY:
3375 return "not-ready";
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003376 case WPS_PIN_DISPLAY:
3377 return "Display";
3378 case WPS_PIN_KEYPAD:
3379 return "Keypad";
3380 case WPS_PBC:
3381 return "PBC";
3382 }
3383
3384 return "??";
3385}
3386
3387
3388static const char * p2p_go_state_text(enum p2p_go_state go_state)
3389{
3390 switch (go_state) {
3391 case UNKNOWN_GO:
3392 return "unknown";
3393 case LOCAL_GO:
3394 return "local";
3395 case REMOTE_GO:
3396 return "remote";
3397 }
3398
3399 return "??";
3400}
3401
3402
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003403const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
3404 const u8 *addr, int next)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003405{
3406 struct p2p_device *dev;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003407
3408 if (addr)
3409 dev = p2p_get_device(p2p, addr);
3410 else
3411 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3412
3413 if (dev && next) {
3414 dev = dl_list_first(&dev->list, struct p2p_device, list);
3415 if (&dev->list == &p2p->devices)
3416 dev = NULL;
3417 }
3418
3419 if (dev == NULL)
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003420 return NULL;
3421
3422 return &dev->info;
3423}
3424
3425
3426int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
3427 char *buf, size_t buflen)
3428{
3429 struct p2p_device *dev;
3430 int res;
3431 char *pos, *end;
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08003432 struct os_reltime now;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003433
3434 if (info == NULL)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003435 return -1;
3436
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003437 dev = (struct p2p_device *) (((u8 *) info) -
3438 offsetof(struct p2p_device, info));
3439
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003440 pos = buf;
3441 end = buf + buflen;
3442
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08003443 os_get_reltime(&now);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003444 res = os_snprintf(pos, end - pos,
3445 "age=%d\n"
3446 "listen_freq=%d\n"
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003447 "wps_method=%s\n"
3448 "interface_addr=" MACSTR "\n"
3449 "member_in_go_dev=" MACSTR "\n"
3450 "member_in_go_iface=" MACSTR "\n"
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003451 "go_neg_req_sent=%d\n"
3452 "go_state=%s\n"
3453 "dialog_token=%u\n"
3454 "intended_addr=" MACSTR "\n"
3455 "country=%c%c\n"
3456 "oper_freq=%d\n"
3457 "req_config_methods=0x%x\n"
3458 "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
3459 "status=%d\n"
3460 "wait_count=%u\n"
3461 "invitation_reqs=%u\n",
3462 (int) (now.sec - dev->last_seen.sec),
3463 dev->listen_freq,
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003464 p2p_wps_method_text(dev->wps_method),
3465 MAC2STR(dev->interface_addr),
3466 MAC2STR(dev->member_in_go_dev),
3467 MAC2STR(dev->member_in_go_iface),
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003468 dev->go_neg_req_sent,
3469 p2p_go_state_text(dev->go_state),
3470 dev->dialog_token,
3471 MAC2STR(dev->intended_addr),
3472 dev->country[0] ? dev->country[0] : '_',
3473 dev->country[1] ? dev->country[1] : '_',
3474 dev->oper_freq,
3475 dev->req_config_methods,
3476 dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
3477 "[PROBE_REQ_ONLY]" : "",
3478 dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
3479 dev->flags & P2P_DEV_NOT_YET_READY ?
3480 "[NOT_YET_READY]" : "",
3481 dev->flags & P2P_DEV_SD_INFO ? "[SD_INFO]" : "",
3482 dev->flags & P2P_DEV_SD_SCHEDULE ? "[SD_SCHEDULE]" :
3483 "",
3484 dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
3485 "[PD_PEER_DISPLAY]" : "",
3486 dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
3487 "[PD_PEER_KEYPAD]" : "",
3488 dev->flags & P2P_DEV_USER_REJECTED ?
3489 "[USER_REJECTED]" : "",
3490 dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
3491 "[PEER_WAITING_RESPONSE]" : "",
3492 dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
3493 "[PREFER_PERSISTENT_GROUP]" : "",
3494 dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
3495 "[WAIT_GO_NEG_RESPONSE]" : "",
3496 dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
3497 "[WAIT_GO_NEG_CONFIRM]" : "",
3498 dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
3499 "[GROUP_CLIENT_ONLY]" : "",
3500 dev->flags & P2P_DEV_FORCE_FREQ ?
3501 "[FORCE_FREQ]" : "",
3502 dev->flags & P2P_DEV_PD_FOR_JOIN ?
3503 "[PD_FOR_JOIN]" : "",
3504 dev->status,
3505 dev->wait_count,
3506 dev->invitation_reqs);
3507 if (res < 0 || res >= end - pos)
3508 return pos - buf;
3509 pos += res;
3510
3511 if (dev->ext_listen_period) {
3512 res = os_snprintf(pos, end - pos,
3513 "ext_listen_period=%u\n"
3514 "ext_listen_interval=%u\n",
3515 dev->ext_listen_period,
3516 dev->ext_listen_interval);
3517 if (res < 0 || res >= end - pos)
3518 return pos - buf;
3519 pos += res;
3520 }
3521
3522 if (dev->oper_ssid_len) {
3523 res = os_snprintf(pos, end - pos,
3524 "oper_ssid=%s\n",
3525 wpa_ssid_txt(dev->oper_ssid,
3526 dev->oper_ssid_len));
3527 if (res < 0 || res >= end - pos)
3528 return pos - buf;
3529 pos += res;
3530 }
3531
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07003532#ifdef CONFIG_WIFI_DISPLAY
3533 if (dev->info.wfd_subelems) {
3534 res = os_snprintf(pos, end - pos, "wfd_subelems=");
3535 if (res < 0 || res >= end - pos)
3536 return pos - buf;
3537 pos += res;
3538
3539 pos += wpa_snprintf_hex(pos, end - pos,
3540 wpabuf_head(dev->info.wfd_subelems),
3541 wpabuf_len(dev->info.wfd_subelems));
3542
3543 res = os_snprintf(pos, end - pos, "\n");
3544 if (res < 0 || res >= end - pos)
3545 return pos - buf;
3546 pos += res;
3547 }
3548#endif /* CONFIG_WIFI_DISPLAY */
3549
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003550 return pos - buf;
3551}
3552
3553
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003554int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
3555{
3556 return p2p_get_device(p2p, addr) != NULL;
3557}
3558
3559
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003560void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
3561{
3562 if (enabled) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003563 p2p_dbg(p2p, "Client discoverability enabled");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003564 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3565 } else {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003566 p2p_dbg(p2p, "Client discoverability disabled");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003567 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3568 }
3569}
3570
3571
3572static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
3573 u32 duration2, u32 interval2)
3574{
3575 struct wpabuf *req;
3576 struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
3577 u8 *len;
3578
3579 req = wpabuf_alloc(100);
3580 if (req == NULL)
3581 return NULL;
3582
3583 if (duration1 || interval1) {
3584 os_memset(&desc1, 0, sizeof(desc1));
3585 desc1.count_type = 1;
3586 desc1.duration = duration1;
3587 desc1.interval = interval1;
3588 ptr1 = &desc1;
3589
3590 if (duration2 || interval2) {
3591 os_memset(&desc2, 0, sizeof(desc2));
3592 desc2.count_type = 2;
3593 desc2.duration = duration2;
3594 desc2.interval = interval2;
3595 ptr2 = &desc2;
3596 }
3597 }
3598
3599 p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
3600 len = p2p_buf_add_ie_hdr(req);
3601 p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
3602 p2p_buf_update_ie_hdr(req, len);
3603
3604 return req;
3605}
3606
3607
3608int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
3609 const u8 *own_interface_addr, unsigned int freq,
3610 u32 duration1, u32 interval1, u32 duration2,
3611 u32 interval2)
3612{
3613 struct wpabuf *req;
3614
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003615 p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
3616 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
3617 "dur2=%u int2=%u",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003618 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
3619 freq, duration1, interval1, duration2, interval2);
3620
3621 req = p2p_build_presence_req(duration1, interval1, duration2,
3622 interval2);
3623 if (req == NULL)
3624 return -1;
3625
3626 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3627 if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
3628 go_interface_addr,
3629 wpabuf_head(req), wpabuf_len(req), 200) < 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003630 p2p_dbg(p2p, "Failed to send Action frame");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003631 }
3632 wpabuf_free(req);
3633
3634 return 0;
3635}
3636
3637
3638static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
3639 size_t noa_len, u8 dialog_token)
3640{
3641 struct wpabuf *resp;
3642 u8 *len;
3643
3644 resp = wpabuf_alloc(100 + noa_len);
3645 if (resp == NULL)
3646 return NULL;
3647
3648 p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
3649 len = p2p_buf_add_ie_hdr(resp);
3650 p2p_buf_add_status(resp, status);
3651 if (noa) {
3652 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
3653 wpabuf_put_le16(resp, noa_len);
3654 wpabuf_put_data(resp, noa, noa_len);
3655 } else
3656 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
3657 p2p_buf_update_ie_hdr(resp, len);
3658
3659 return resp;
3660}
3661
3662
3663static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
3664 const u8 *sa, const u8 *data, size_t len,
3665 int rx_freq)
3666{
3667 struct p2p_message msg;
3668 u8 status;
3669 struct wpabuf *resp;
3670 size_t g;
3671 struct p2p_group *group = NULL;
3672 int parsed = 0;
3673 u8 noa[50];
3674 int noa_len;
3675
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003676 p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003677
3678 for (g = 0; g < p2p->num_groups; g++) {
3679 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
3680 ETH_ALEN) == 0) {
3681 group = p2p->groups[g];
3682 break;
3683 }
3684 }
3685 if (group == NULL) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003686 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003687 MACSTR, MAC2STR(da));
3688 return;
3689 }
3690
3691 if (p2p_parse(data, len, &msg) < 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003692 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003693 status = P2P_SC_FAIL_INVALID_PARAMS;
3694 goto fail;
3695 }
3696 parsed = 1;
3697
3698 if (msg.noa == NULL) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003699 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003700 status = P2P_SC_FAIL_INVALID_PARAMS;
3701 goto fail;
3702 }
3703
3704 status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
3705
3706fail:
3707 if (p2p->cfg->get_noa)
3708 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
3709 sizeof(noa));
3710 else
3711 noa_len = -1;
3712 resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
3713 noa_len > 0 ? noa_len : 0,
3714 msg.dialog_token);
3715 if (parsed)
3716 p2p_parse_free(&msg);
3717 if (resp == NULL)
3718 return;
3719
3720 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3721 if (p2p_send_action(p2p, rx_freq, sa, da, da,
3722 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003723 p2p_dbg(p2p, "Failed to send Action frame");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003724 }
3725 wpabuf_free(resp);
3726}
3727
3728
3729static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
3730 const u8 *sa, const u8 *data, size_t len)
3731{
3732 struct p2p_message msg;
3733
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003734 p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003735
3736 if (p2p_parse(data, len, &msg) < 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003737 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003738 return;
3739 }
3740
3741 if (msg.status == NULL || msg.noa == NULL) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003742 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003743 p2p_parse_free(&msg);
3744 return;
3745 }
3746
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08003747 if (p2p->cfg->presence_resp) {
3748 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status,
3749 msg.noa, msg.noa_len);
3750 }
3751
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003752 if (*msg.status) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003753 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003754 *msg.status);
3755 p2p_parse_free(&msg);
3756 return;
3757 }
3758
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003759 p2p_dbg(p2p, "P2P Presence Request was accepted");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003760 wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
3761 msg.noa, msg.noa_len);
3762 /* TODO: process NoA */
3763 p2p_parse_free(&msg);
3764}
3765
3766
3767static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
3768{
3769 struct p2p_data *p2p = eloop_ctx;
3770
3771 if (p2p->ext_listen_interval) {
3772 /* Schedule next extended listen timeout */
3773 eloop_register_timeout(p2p->ext_listen_interval_sec,
3774 p2p->ext_listen_interval_usec,
3775 p2p_ext_listen_timeout, p2p, NULL);
3776 }
3777
3778 if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
3779 /*
3780 * This should not really happen, but it looks like the Listen
3781 * command may fail is something else (e.g., a scan) was
3782 * running at an inconvenient time. As a workaround, allow new
3783 * Extended Listen operation to be started.
3784 */
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003785 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003786 p2p->ext_listen_only = 0;
3787 p2p_set_state(p2p, P2P_IDLE);
3788 }
3789
3790 if (p2p->state != P2P_IDLE) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003791 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003792 return;
3793 }
3794
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003795 p2p_dbg(p2p, "Extended Listen timeout");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003796 p2p->ext_listen_only = 1;
3797 if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003798 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003799 p2p->ext_listen_only = 0;
3800 }
3801}
3802
3803
3804int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
3805 unsigned int interval)
3806{
3807 if (period > 65535 || interval > 65535 || period > interval ||
3808 (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003809 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
3810 period, interval);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003811 return -1;
3812 }
3813
3814 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
3815
3816 if (interval == 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003817 p2p_dbg(p2p, "Disabling Extended Listen Timing");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003818 p2p->ext_listen_period = 0;
3819 p2p->ext_listen_interval = 0;
3820 return 0;
3821 }
3822
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003823 p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
3824 period, interval);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003825 p2p->ext_listen_period = period;
3826 p2p->ext_listen_interval = interval;
3827 p2p->ext_listen_interval_sec = interval / 1000;
3828 p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
3829
3830 eloop_register_timeout(p2p->ext_listen_interval_sec,
3831 p2p->ext_listen_interval_usec,
3832 p2p_ext_listen_timeout, p2p, NULL);
3833
3834 return 0;
3835}
3836
3837
3838void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3839 const u8 *ie, size_t ie_len)
3840{
3841 struct p2p_message msg;
3842
3843 if (bssid == NULL || ie == NULL)
3844 return;
3845
3846 os_memset(&msg, 0, sizeof(msg));
3847 if (p2p_parse_ies(ie, ie_len, &msg))
3848 return;
3849 if (msg.minor_reason_code == NULL)
3850 return;
3851
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003852 p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003853 " reason_code=%u minor_reason_code=%u",
3854 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3855
3856 p2p_parse_free(&msg);
3857}
3858
3859
3860void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3861 const u8 *ie, size_t ie_len)
3862{
3863 struct p2p_message msg;
3864
3865 if (bssid == NULL || ie == NULL)
3866 return;
3867
3868 os_memset(&msg, 0, sizeof(msg));
3869 if (p2p_parse_ies(ie, ie_len, &msg))
3870 return;
3871 if (msg.minor_reason_code == NULL)
3872 return;
3873
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003874 p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003875 " reason_code=%u minor_reason_code=%u",
3876 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3877
3878 p2p_parse_free(&msg);
3879}
3880
3881
3882void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
3883{
3884 if (enabled) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003885 p2p_dbg(p2p, "Managed P2P Device operations enabled");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003886 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
3887 } else {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003888 p2p_dbg(p2p, "Managed P2P Device operations disabled");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003889 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
3890 }
3891}
3892
3893
3894int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel)
3895{
Dmitry Shmidt4b060592013-04-29 16:42:49 -07003896 if (p2p_channel_to_freq(reg_class, channel) < 0)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003897 return -1;
3898
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003899 p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
3900 reg_class, channel);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003901 p2p->cfg->reg_class = reg_class;
3902 p2p->cfg->channel = channel;
3903
3904 return 0;
3905}
3906
3907
3908int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
3909{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003910 p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003911 if (postfix == NULL) {
3912 p2p->cfg->ssid_postfix_len = 0;
3913 return 0;
3914 }
3915 if (len > sizeof(p2p->cfg->ssid_postfix))
3916 return -1;
3917 os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
3918 p2p->cfg->ssid_postfix_len = len;
3919 return 0;
3920}
3921
3922
Jouni Malinen75ecf522011-06-27 15:19:46 -07003923int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
3924 int cfg_op_channel)
3925{
Dmitry Shmidt4b060592013-04-29 16:42:49 -07003926 if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
Jouni Malinen75ecf522011-06-27 15:19:46 -07003927 return -1;
3928
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003929 p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
3930 op_reg_class, op_channel);
Jouni Malinen75ecf522011-06-27 15:19:46 -07003931 p2p->cfg->op_reg_class = op_reg_class;
3932 p2p->cfg->op_channel = op_channel;
3933 p2p->cfg->cfg_op_channel = cfg_op_channel;
3934 return 0;
3935}
3936
3937
Dmitry Shmidt04949592012-07-19 12:16:46 -07003938int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
3939 const struct p2p_channel *pref_chan)
3940{
3941 struct p2p_channel *n;
3942
3943 if (pref_chan) {
3944 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
3945 if (n == NULL)
3946 return -1;
3947 os_memcpy(n, pref_chan,
3948 num_pref_chan * sizeof(struct p2p_channel));
3949 } else
3950 n = NULL;
3951
3952 os_free(p2p->cfg->pref_chan);
3953 p2p->cfg->pref_chan = n;
3954 p2p->cfg->num_pref_chan = num_pref_chan;
3955
3956 return 0;
3957}
3958
3959
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07003960int p2p_set_no_go_freq(struct p2p_data *p2p,
3961 const struct wpa_freq_range_list *list)
3962{
3963 struct wpa_freq_range *tmp;
3964
3965 if (list == NULL || list->num == 0) {
3966 os_free(p2p->no_go_freq.range);
3967 p2p->no_go_freq.range = NULL;
3968 p2p->no_go_freq.num = 0;
3969 return 0;
3970 }
3971
3972 tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
3973 if (tmp == NULL)
3974 return -1;
3975 os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
3976 os_free(p2p->no_go_freq.range);
3977 p2p->no_go_freq.range = tmp;
3978 p2p->no_go_freq.num = list->num;
3979 p2p_dbg(p2p, "Updated no GO chan list");
3980
3981 return 0;
3982}
3983
3984
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003985int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
3986 u8 *iface_addr)
3987{
3988 struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
3989 if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
3990 return -1;
3991 os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
3992 return 0;
3993}
3994
3995
3996int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
3997 u8 *dev_addr)
3998{
3999 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4000 if (dev == NULL)
4001 return -1;
4002 os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4003 return 0;
4004}
4005
4006
4007void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4008{
4009 os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4010 if (is_zero_ether_addr(p2p->peer_filter))
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07004011 p2p_dbg(p2p, "Disable peer filter");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004012 else
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07004013 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4014 MAC2STR(p2p->peer_filter));
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004015}
4016
4017
4018void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4019{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07004020 p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004021 if (p2p->cross_connect == enabled)
4022 return;
4023 p2p->cross_connect = enabled;
4024 /* TODO: may need to tear down any action group where we are GO(?) */
4025}
4026
4027
4028int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4029{
4030 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4031 if (dev == NULL)
4032 return -1;
4033 if (dev->oper_freq <= 0)
4034 return -1;
4035 return dev->oper_freq;
4036}
4037
4038
4039void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4040{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07004041 p2p_dbg(p2p, "Intra BSS distribution %s",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004042 enabled ? "enabled" : "disabled");
4043 p2p->cfg->p2p_intra_bss = enabled;
4044}
4045
4046
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07004047void p2p_update_channel_list(struct p2p_data *p2p,
4048 const struct p2p_channels *chan,
4049 const struct p2p_channels *cli_chan)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004050{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07004051 p2p_dbg(p2p, "Update channel list");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004052 os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07004053 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4054 os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4055 sizeof(struct p2p_channels));
4056 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004057}
4058
4059
4060int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4061 const u8 *src, const u8 *bssid, const u8 *buf,
4062 size_t len, unsigned int wait_time)
4063{
4064 if (p2p->p2p_scan_running) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07004065 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004066 if (p2p->after_scan_tx) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07004067 p2p_dbg(p2p, "Dropped previous pending Action frame TX");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004068 os_free(p2p->after_scan_tx);
4069 }
4070 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4071 len);
4072 if (p2p->after_scan_tx == NULL)
4073 return -1;
4074 p2p->after_scan_tx->freq = freq;
4075 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4076 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4077 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4078 p2p->after_scan_tx->len = len;
4079 p2p->after_scan_tx->wait_time = wait_time;
4080 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4081 return 0;
4082 }
4083
4084 return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4085 buf, len, wait_time);
4086}
4087
4088
4089void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4090 int freq_overall)
4091{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07004092 p2p_dbg(p2p, "Best channel: 2.4 GHz: %d, 5 GHz: %d, overall: %d",
4093 freq_24, freq_5, freq_overall);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004094 p2p->best_freq_24 = freq_24;
4095 p2p->best_freq_5 = freq_5;
4096 p2p->best_freq_overall = freq_overall;
4097}
4098
4099
Dmitry Shmidt700a1372013-03-15 14:14:44 -07004100void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4101{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07004102 p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
Dmitry Shmidt700a1372013-03-15 14:14:44 -07004103 p2p->own_freq_preference = freq;
4104}
4105
4106
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004107const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4108{
4109 if (p2p == NULL || p2p->go_neg_peer == NULL)
4110 return NULL;
4111 return p2p->go_neg_peer->info.p2p_device_addr;
4112}
4113
4114
4115const struct p2p_peer_info *
4116p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4117{
4118 struct p2p_device *dev;
4119
4120 if (addr) {
4121 dev = p2p_get_device(p2p, addr);
4122 if (!dev)
4123 return NULL;
4124
4125 if (!next) {
4126 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4127 return NULL;
4128
4129 return &dev->info;
4130 } else {
4131 do {
4132 dev = dl_list_first(&dev->list,
4133 struct p2p_device,
4134 list);
4135 if (&dev->list == &p2p->devices)
4136 return NULL;
4137 } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4138 }
4139 } else {
4140 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4141 if (!dev)
4142 return NULL;
4143 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4144 dev = dl_list_first(&dev->list,
4145 struct p2p_device,
4146 list);
4147 if (&dev->list == &p2p->devices)
4148 return NULL;
4149 }
4150 }
4151
4152 return &dev->info;
4153}
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08004154
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08004155
4156int p2p_in_progress(struct p2p_data *p2p)
4157{
4158 if (p2p == NULL)
4159 return 0;
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08004160 if (p2p->state == P2P_SEARCH)
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07004161 return 2;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08004162 return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
4163}
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07004164
4165
4166void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
4167 u8 client_timeout)
4168{
4169 if (p2p) {
4170 p2p->go_timeout = go_timeout;
4171 p2p->client_timeout = client_timeout;
4172 }
4173}
4174
4175
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07004176#ifdef CONFIG_WIFI_DISPLAY
4177
4178static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
4179{
4180 size_t g;
4181 struct p2p_group *group;
4182
4183 for (g = 0; g < p2p->num_groups; g++) {
4184 group = p2p->groups[g];
Dmitry Shmidtb96dad42013-11-05 10:07:29 -08004185 p2p_group_force_beacon_update_ies(group);
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07004186 }
4187}
4188
4189
4190int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
4191{
4192 wpabuf_free(p2p->wfd_ie_beacon);
4193 p2p->wfd_ie_beacon = ie;
4194 p2p_update_wfd_ie_groups(p2p);
4195 return 0;
4196}
4197
4198
4199int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
4200{
4201 wpabuf_free(p2p->wfd_ie_probe_req);
4202 p2p->wfd_ie_probe_req = ie;
4203 return 0;
4204}
4205
4206
4207int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
4208{
4209 wpabuf_free(p2p->wfd_ie_probe_resp);
4210 p2p->wfd_ie_probe_resp = ie;
4211 p2p_update_wfd_ie_groups(p2p);
4212 return 0;
4213}
4214
4215
4216int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
4217{
4218 wpabuf_free(p2p->wfd_ie_assoc_req);
4219 p2p->wfd_ie_assoc_req = ie;
4220 return 0;
4221}
4222
4223
4224int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
4225{
4226 wpabuf_free(p2p->wfd_ie_invitation);
4227 p2p->wfd_ie_invitation = ie;
4228 return 0;
4229}
4230
4231
4232int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
4233{
4234 wpabuf_free(p2p->wfd_ie_prov_disc_req);
4235 p2p->wfd_ie_prov_disc_req = ie;
4236 return 0;
4237}
4238
4239
4240int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
4241{
4242 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
4243 p2p->wfd_ie_prov_disc_resp = ie;
4244 return 0;
4245}
4246
4247
4248int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
4249{
4250 wpabuf_free(p2p->wfd_ie_go_neg);
4251 p2p->wfd_ie_go_neg = ie;
4252 return 0;
4253}
4254
4255
4256int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
4257{
4258 wpabuf_free(p2p->wfd_dev_info);
4259 if (elem) {
4260 p2p->wfd_dev_info = wpabuf_dup(elem);
4261 if (p2p->wfd_dev_info == NULL)
4262 return -1;
4263 } else
4264 p2p->wfd_dev_info = NULL;
4265
4266 return 0;
4267}
4268
4269
4270int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
4271{
4272 wpabuf_free(p2p->wfd_assoc_bssid);
4273 if (elem) {
4274 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
4275 if (p2p->wfd_assoc_bssid == NULL)
4276 return -1;
4277 } else
4278 p2p->wfd_assoc_bssid = NULL;
4279
4280 return 0;
4281}
4282
4283
4284int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
4285 const struct wpabuf *elem)
4286{
4287 wpabuf_free(p2p->wfd_coupled_sink_info);
4288 if (elem) {
4289 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
4290 if (p2p->wfd_coupled_sink_info == NULL)
4291 return -1;
4292 } else
4293 p2p->wfd_coupled_sink_info = NULL;
4294
4295 return 0;
4296}
4297
4298#endif /* CONFIG_WIFI_DISPLAY */
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08004299
4300
4301int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
4302 int max_disc_tu)
4303{
4304 if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
4305 return -1;
4306
4307 p2p->min_disc_int = min_disc_int;
4308 p2p->max_disc_int = max_disc_int;
4309 p2p->max_disc_tu = max_disc_tu;
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07004310 p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
4311 min_disc_int, max_disc_int, max_disc_tu);
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08004312
4313 return 0;
4314}
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07004315
4316
4317void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
4318{
4319 va_list ap;
4320 char buf[500];
4321
4322 if (!p2p->cfg->debug_print)
4323 return;
4324
4325 va_start(ap, fmt);
4326 vsnprintf(buf, sizeof(buf), fmt, ap);
4327 buf[sizeof(buf) - 1] = '\0';
4328 va_end(ap);
4329 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
4330}
4331
4332
4333void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
4334{
4335 va_list ap;
4336 char buf[500];
4337
4338 if (!p2p->cfg->debug_print)
4339 return;
4340
4341 va_start(ap, fmt);
4342 vsnprintf(buf, sizeof(buf), fmt, ap);
4343 buf[sizeof(buf) - 1] = '\0';
4344 va_end(ap);
4345 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
4346}
4347
4348
4349void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
4350{
4351 va_list ap;
4352 char buf[500];
4353
4354 if (!p2p->cfg->debug_print)
4355 return;
4356
4357 va_start(ap, fmt);
4358 vsnprintf(buf, sizeof(buf), fmt, ap);
4359 buf[sizeof(buf) - 1] = '\0';
4360 va_end(ap);
4361 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
4362}