blob: 104f77ba4ec188c61a57ad4eb34441ac77e5a59b [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 */
Dmitry Shmidt2093d062014-01-17 10:58:50 -080044#ifndef P2P_PEER_EXPIRATION_AGE
45#define P2P_PEER_EXPIRATION_AGE 60
Dmitry Shmidt18463232014-01-24 12:29:41 -080046#endif /* P2P_PEER_EXPIRATION_AGE */
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070047
48#define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2)
49
50static void p2p_expire_peers(struct p2p_data *p2p)
51{
52 struct p2p_device *dev, *n;
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -080053 struct os_reltime now;
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -080054 size_t i;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070055
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -080056 os_get_reltime(&now);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070057 dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
58 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec)
59 continue;
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -080060
Dmitry Shmidt9e3f8ee2014-01-17 10:52:01 -080061 if (dev == p2p->go_neg_peer) {
62 /*
63 * GO Negotiation is in progress with the peer, so
64 * don't expire the peer entry until GO Negotiation
65 * fails or times out.
66 */
67 continue;
68 }
69
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -080070 if (p2p->cfg->go_connected &&
71 p2p->cfg->go_connected(p2p->cfg->cb_ctx,
72 dev->info.p2p_device_addr)) {
73 /*
74 * We are connected as a client to a group in which the
75 * peer is the GO, so do not expire the peer entry.
76 */
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -080077 os_get_reltime(&dev->last_seen);
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -080078 continue;
79 }
80
81 for (i = 0; i < p2p->num_groups; i++) {
82 if (p2p_group_is_client_connected(
83 p2p->groups[i], dev->info.p2p_device_addr))
84 break;
85 }
86 if (i < p2p->num_groups) {
87 /*
88 * The peer is connected as a client in a group where
89 * we are the GO, so do not expire the peer entry.
90 */
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -080091 os_get_reltime(&dev->last_seen);
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -080092 continue;
93 }
94
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -070095 p2p_dbg(p2p, "Expiring old peer entry " MACSTR,
96 MAC2STR(dev->info.p2p_device_addr));
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070097 dl_list_del(&dev->list);
98 p2p_device_free(p2p, dev);
99 }
100}
101
102
103static void p2p_expiration_timeout(void *eloop_ctx, void *timeout_ctx)
104{
105 struct p2p_data *p2p = eloop_ctx;
106 p2p_expire_peers(p2p);
107 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
108 p2p_expiration_timeout, p2p, NULL);
109}
110
111
112static const char * p2p_state_txt(int state)
113{
114 switch (state) {
115 case P2P_IDLE:
116 return "IDLE";
117 case P2P_SEARCH:
118 return "SEARCH";
119 case P2P_CONNECT:
120 return "CONNECT";
121 case P2P_CONNECT_LISTEN:
122 return "CONNECT_LISTEN";
123 case P2P_GO_NEG:
124 return "GO_NEG";
125 case P2P_LISTEN_ONLY:
126 return "LISTEN_ONLY";
127 case P2P_WAIT_PEER_CONNECT:
128 return "WAIT_PEER_CONNECT";
129 case P2P_WAIT_PEER_IDLE:
130 return "WAIT_PEER_IDLE";
131 case P2P_SD_DURING_FIND:
132 return "SD_DURING_FIND";
133 case P2P_PROVISIONING:
134 return "PROVISIONING";
135 case P2P_PD_DURING_FIND:
136 return "PD_DURING_FIND";
137 case P2P_INVITE:
138 return "INVITE";
139 case P2P_INVITE_LISTEN:
140 return "INVITE_LISTEN";
141 default:
142 return "?";
143 }
144}
145
146
Dmitry Shmidtb7b4d0e2013-08-26 12:09:05 -0700147const char * p2p_get_state_txt(struct p2p_data *p2p)
148{
149 return p2p_state_txt(p2p->state);
150}
151
152
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800153u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr)
154{
155 struct p2p_device *dev = NULL;
156
157 if (!addr || !p2p)
158 return 0;
159
160 dev = p2p_get_device(p2p, addr);
161 if (dev)
162 return dev->wps_prov_info;
163 else
164 return 0;
165}
166
167
Dmitry Shmidt04949592012-07-19 12:16:46 -0700168void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr)
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800169{
170 struct p2p_device *dev = NULL;
171
Dmitry Shmidt04949592012-07-19 12:16:46 -0700172 if (!addr || !p2p)
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800173 return;
174
Dmitry Shmidt04949592012-07-19 12:16:46 -0700175 dev = p2p_get_device(p2p, addr);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800176 if (dev)
177 dev->wps_prov_info = 0;
178}
179
180
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700181void p2p_set_state(struct p2p_data *p2p, int new_state)
182{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700183 p2p_dbg(p2p, "State %s -> %s",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700184 p2p_state_txt(p2p->state), p2p_state_txt(new_state));
185 p2p->state = new_state;
Dmitry Shmidt43cb5782014-06-16 16:23:22 -0700186
187 if (new_state == P2P_IDLE && p2p->pending_channel) {
188 p2p_dbg(p2p, "Apply change in listen channel");
189 p2p->cfg->reg_class = p2p->pending_reg_class;
190 p2p->cfg->channel = p2p->pending_channel;
191 p2p->pending_reg_class = 0;
192 p2p->pending_channel = 0;
193 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700194}
195
196
197void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
198{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700199 p2p_dbg(p2p, "Set timeout (state=%s): %u.%06u sec",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700200 p2p_state_txt(p2p->state), sec, usec);
201 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
202 eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
203}
204
205
206void p2p_clear_timeout(struct p2p_data *p2p)
207{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700208 p2p_dbg(p2p, "Clear timeout (state=%s)", p2p_state_txt(p2p->state));
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700209 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
210}
211
212
213void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
214 int status)
215{
216 struct p2p_go_neg_results res;
217 p2p_clear_timeout(p2p);
218 p2p_set_state(p2p, P2P_IDLE);
Dmitry Shmidt8c652892013-03-01 10:14:01 -0800219 if (p2p->go_neg_peer) {
220 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800221 p2p->go_neg_peer->wps_method = WPS_NOT_READY;
Dmitry Shmidtcf32e602014-01-28 10:57:39 -0800222 p2p->go_neg_peer->oob_pw_id = 0;
Dmitry Shmidt8c652892013-03-01 10:14:01 -0800223 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700224 p2p->go_neg_peer = NULL;
225
226 os_memset(&res, 0, sizeof(res));
227 res.status = status;
228 if (peer) {
Dmitry Shmidt413dde72014-04-11 10:23:22 -0700229 wpabuf_free(peer->go_neg_conf);
230 peer->go_neg_conf = NULL;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700231 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr,
232 ETH_ALEN);
233 os_memcpy(res.peer_interface_addr, peer->intended_addr,
234 ETH_ALEN);
235 }
236 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
237}
238
239
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800240static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700241{
242 unsigned int r, tu;
243 int freq;
244 struct wpabuf *ies;
245
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700246 p2p_dbg(p2p, "Starting short listen state (state=%s)",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700247 p2p_state_txt(p2p->state));
248
Dmitry Shmidt3c57b3f2014-05-22 15:13:07 -0700249 if (p2p->pending_listen_freq) {
250 /* We have a pending p2p_listen request */
251 p2p_dbg(p2p, "p2p_listen command pending already");
252 return;
253 }
254
Dmitry Shmidt4b060592013-04-29 16:42:49 -0700255 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700256 if (freq < 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700257 p2p_dbg(p2p, "Unknown regulatory class/channel");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700258 return;
259 }
260
261 os_get_random((u8 *) &r, sizeof(r));
262 tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
263 p2p->min_disc_int) * 100;
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800264 if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu)
265 tu = p2p->max_disc_tu;
266 if (!dev_disc && tu < 100)
267 tu = 100; /* Need to wait in non-device discovery use cases */
268 if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen)
269 tu = p2p->cfg->max_listen * 1000 / 1024;
270
271 if (tu == 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700272 p2p_dbg(p2p, "Skip listen state since duration was 0 TU");
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800273 p2p_set_timeout(p2p, 0, 0);
274 return;
275 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700276
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700277 ies = p2p_build_probe_resp_ies(p2p);
278 if (ies == NULL)
279 return;
280
Dmitry Shmidt3c57b3f2014-05-22 15:13:07 -0700281 p2p->pending_listen_freq = freq;
282 p2p->pending_listen_sec = 0;
283 p2p->pending_listen_usec = 1024 * tu;
284
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700285 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
286 ies) < 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700287 p2p_dbg(p2p, "Failed to start listen mode");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700288 p2p->pending_listen_freq = 0;
289 }
290 wpabuf_free(ies);
291}
292
293
294int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
295{
296 int freq;
297 struct wpabuf *ies;
298
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700299 p2p_dbg(p2p, "Going to listen(only) state");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700300
Dmitry Shmidt3c57b3f2014-05-22 15:13:07 -0700301 if (p2p->pending_listen_freq) {
302 /* We have a pending p2p_listen request */
303 p2p_dbg(p2p, "p2p_listen command pending already");
304 return -1;
305 }
306
Dmitry Shmidt4b060592013-04-29 16:42:49 -0700307 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700308 if (freq < 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700309 p2p_dbg(p2p, "Unknown regulatory class/channel");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700310 return -1;
311 }
312
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700313 p2p->pending_listen_sec = timeout / 1000;
314 p2p->pending_listen_usec = (timeout % 1000) * 1000;
315
316 if (p2p->p2p_scan_running) {
Dmitry Shmidt04949592012-07-19 12:16:46 -0700317 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700318 p2p_dbg(p2p, "p2p_scan running - connect is already pending - skip listen");
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800319 return 0;
320 }
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700321 p2p_dbg(p2p, "p2p_scan running - delay start of listen state");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700322 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
323 return 0;
324 }
325
326 ies = p2p_build_probe_resp_ies(p2p);
327 if (ies == NULL)
328 return -1;
329
Dmitry Shmidt3c57b3f2014-05-22 15:13:07 -0700330 p2p->pending_listen_freq = freq;
331
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700332 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700333 p2p_dbg(p2p, "Failed to start listen mode");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700334 p2p->pending_listen_freq = 0;
335 wpabuf_free(ies);
336 return -1;
337 }
338 wpabuf_free(ies);
339
340 p2p_set_state(p2p, P2P_LISTEN_ONLY);
341
342 return 0;
343}
344
345
346static void p2p_device_clear_reported(struct p2p_data *p2p)
347{
348 struct p2p_device *dev;
349 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list)
350 dev->flags &= ~P2P_DEV_REPORTED;
351}
352
353
354/**
355 * p2p_get_device - Fetch a peer entry
356 * @p2p: P2P module context from p2p_init()
357 * @addr: P2P Device Address of the peer
358 * Returns: Pointer to the device entry or %NULL if not found
359 */
360struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
361{
362 struct p2p_device *dev;
363 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
364 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
365 return dev;
366 }
367 return NULL;
368}
369
370
371/**
372 * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
373 * @p2p: P2P module context from p2p_init()
374 * @addr: P2P Interface Address of the peer
375 * Returns: Pointer to the device entry or %NULL if not found
376 */
377struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
378 const u8 *addr)
379{
380 struct p2p_device *dev;
381 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
382 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
383 return dev;
384 }
385 return NULL;
386}
387
388
389/**
390 * p2p_create_device - Create a peer entry
391 * @p2p: P2P module context from p2p_init()
392 * @addr: P2P Device Address of the peer
393 * Returns: Pointer to the device entry or %NULL on failure
394 *
395 * If there is already an entry for the peer, it will be returned instead of
396 * creating a new one.
397 */
398static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
399 const u8 *addr)
400{
401 struct p2p_device *dev, *oldest = NULL;
402 size_t count = 0;
403
404 dev = p2p_get_device(p2p, addr);
405 if (dev)
406 return dev;
407
408 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
409 count++;
410 if (oldest == NULL ||
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800411 os_reltime_before(&dev->last_seen, &oldest->last_seen))
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700412 oldest = dev;
413 }
414 if (count + 1 > p2p->cfg->max_peers && oldest) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700415 p2p_dbg(p2p, "Remove oldest peer entry to make room for a new peer");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700416 dl_list_del(&oldest->list);
417 p2p_device_free(p2p, oldest);
418 }
419
420 dev = os_zalloc(sizeof(*dev));
421 if (dev == NULL)
422 return NULL;
423 dl_list_add(&p2p->devices, &dev->list);
424 os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
425
426 return dev;
427}
428
429
430static void p2p_copy_client_info(struct p2p_device *dev,
431 struct p2p_client_info *cli)
432{
433 os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len);
434 dev->info.device_name[cli->dev_name_len] = '\0';
435 dev->info.dev_capab = cli->dev_capab;
436 dev->info.config_methods = cli->config_methods;
437 os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
438 dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
439 os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
440 dev->info.wps_sec_dev_type_list_len);
441}
442
443
444static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
445 const u8 *go_interface_addr, int freq,
446 const u8 *gi, size_t gi_len)
447{
448 struct p2p_group_info info;
449 size_t c;
450 struct p2p_device *dev;
451
452 if (gi == NULL)
453 return 0;
454
455 if (p2p_group_info_parse(gi, gi_len, &info) < 0)
456 return -1;
457
458 /*
459 * Clear old data for this group; if the devices are still in the
460 * group, the information will be restored in the loop following this.
461 */
462 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800463 if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700464 ETH_ALEN) == 0) {
465 os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
466 os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
467 }
468 }
469
470 for (c = 0; c < info.num_clients; c++) {
471 struct p2p_client_info *cli = &info.client[c];
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800472 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
473 ETH_ALEN) == 0)
474 continue; /* ignore our own entry */
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700475 dev = p2p_get_device(p2p, cli->p2p_device_addr);
476 if (dev) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700477 if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
Dmitry Shmidt04949592012-07-19 12:16:46 -0700478 P2P_DEV_PROBE_REQ_ONLY)) {
479 /*
480 * Update information since we have not
481 * received this directly from the client.
482 */
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700483 p2p_copy_client_info(dev, cli);
Dmitry Shmidt04949592012-07-19 12:16:46 -0700484 } else {
485 /*
486 * Need to update P2P Client Discoverability
487 * flag since it is valid only in P2P Group
488 * Info attribute.
489 */
490 dev->info.dev_capab &=
491 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
492 dev->info.dev_capab |=
493 cli->dev_capab &
494 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
495 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700496 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
497 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
498 }
499 } else {
500 dev = p2p_create_device(p2p, cli->p2p_device_addr);
501 if (dev == NULL)
502 continue;
503 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
504 p2p_copy_client_info(dev, cli);
505 dev->oper_freq = freq;
506 p2p->cfg->dev_found(p2p->cfg->cb_ctx,
507 dev->info.p2p_device_addr,
508 &dev->info, 1);
509 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
510 }
511
512 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
513 ETH_ALEN);
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800514 os_get_reltime(&dev->last_seen);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700515 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
516 os_memcpy(dev->member_in_go_iface, go_interface_addr,
517 ETH_ALEN);
518 }
519
520 return 0;
521}
522
523
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700524static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev,
525 int probe_req, const struct p2p_message *msg)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700526{
527 os_memcpy(dev->info.device_name, msg->device_name,
528 sizeof(dev->info.device_name));
529
530 if (msg->manufacturer &&
531 msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
532 os_memset(dev->info.manufacturer, 0,
533 sizeof(dev->info.manufacturer));
534 os_memcpy(dev->info.manufacturer, msg->manufacturer,
535 msg->manufacturer_len);
536 }
537
538 if (msg->model_name &&
539 msg->model_name_len < sizeof(dev->info.model_name)) {
540 os_memset(dev->info.model_name, 0,
541 sizeof(dev->info.model_name));
542 os_memcpy(dev->info.model_name, msg->model_name,
543 msg->model_name_len);
544 }
545
546 if (msg->model_number &&
547 msg->model_number_len < sizeof(dev->info.model_number)) {
548 os_memset(dev->info.model_number, 0,
549 sizeof(dev->info.model_number));
550 os_memcpy(dev->info.model_number, msg->model_number,
551 msg->model_number_len);
552 }
553
554 if (msg->serial_number &&
555 msg->serial_number_len < sizeof(dev->info.serial_number)) {
556 os_memset(dev->info.serial_number, 0,
557 sizeof(dev->info.serial_number));
558 os_memcpy(dev->info.serial_number, msg->serial_number,
559 msg->serial_number_len);
560 }
561
562 if (msg->pri_dev_type)
563 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
564 sizeof(dev->info.pri_dev_type));
565 else if (msg->wps_pri_dev_type)
566 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
567 sizeof(dev->info.pri_dev_type));
568
569 if (msg->wps_sec_dev_type_list) {
570 os_memcpy(dev->info.wps_sec_dev_type_list,
571 msg->wps_sec_dev_type_list,
572 msg->wps_sec_dev_type_list_len);
573 dev->info.wps_sec_dev_type_list_len =
574 msg->wps_sec_dev_type_list_len;
575 }
576
577 if (msg->capability) {
Dmitry Shmidt04949592012-07-19 12:16:46 -0700578 /*
579 * P2P Client Discoverability bit is reserved in all frames
580 * that use this function, so do not change its value here.
581 */
582 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
583 dev->info.dev_capab |= msg->capability[0] &
584 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700585 dev->info.group_capab = msg->capability[1];
586 }
587
588 if (msg->ext_listen_timing) {
589 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
590 dev->ext_listen_interval =
591 WPA_GET_LE16(msg->ext_listen_timing + 2);
592 }
Dmitry Shmidt04949592012-07-19 12:16:46 -0700593
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700594 if (!probe_req) {
Dmitry Shmidtf8623282013-02-20 14:34:59 -0800595 u16 new_config_methods;
596 new_config_methods = msg->config_methods ?
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700597 msg->config_methods : msg->wps_config_methods;
Dmitry Shmidtf8623282013-02-20 14:34:59 -0800598 if (new_config_methods &&
599 dev->info.config_methods != new_config_methods) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700600 p2p_dbg(p2p, "Update peer " MACSTR
601 " config_methods 0x%x -> 0x%x",
602 MAC2STR(dev->info.p2p_device_addr),
603 dev->info.config_methods,
604 new_config_methods);
Dmitry Shmidtf8623282013-02-20 14:34:59 -0800605 dev->info.config_methods = new_config_methods;
606 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700607 }
608}
609
610
611/**
Dmitry Shmidt04949592012-07-19 12:16:46 -0700612 * p2p_add_device - Add peer entries based on scan results or P2P frames
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700613 * @p2p: P2P module context from p2p_init()
614 * @addr: Source address of Beacon or Probe Response frame (may be either
615 * P2P Device Address or P2P Interface Address)
616 * @level: Signal level (signal strength of the received frame from the peer)
617 * @freq: Frequency on which the Beacon or Probe Response frame was received
Dmitry Shmidtf8623282013-02-20 14:34:59 -0800618 * @rx_time: Time when the result was received
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700619 * @ies: IEs from the Beacon or Probe Response frame
620 * @ies_len: Length of ies buffer in octets
Dmitry Shmidt04949592012-07-19 12:16:46 -0700621 * @scan_res: Whether this was based on scan results
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700622 * Returns: 0 on success, -1 on failure
623 *
624 * If the scan result is for a GO, the clients in the group will also be added
625 * to the peer table. This function can also be used with some other frames
626 * like Provision Discovery Request that contains P2P Capability and P2P Device
627 * Info attributes.
628 */
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800629int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800630 struct os_reltime *rx_time, int level, const u8 *ies,
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800631 size_t ies_len, int scan_res)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700632{
633 struct p2p_device *dev;
634 struct p2p_message msg;
635 const u8 *p2p_dev_addr;
636 int i;
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800637 struct os_reltime time_now;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700638
639 os_memset(&msg, 0, sizeof(msg));
640 if (p2p_parse_ies(ies, ies_len, &msg)) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700641 p2p_dbg(p2p, "Failed to parse P2P IE for a device entry");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700642 p2p_parse_free(&msg);
643 return -1;
644 }
645
646 if (msg.p2p_device_addr)
647 p2p_dev_addr = msg.p2p_device_addr;
648 else if (msg.device_id)
649 p2p_dev_addr = msg.device_id;
650 else {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700651 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700652 p2p_parse_free(&msg);
653 return -1;
654 }
655
656 if (!is_zero_ether_addr(p2p->peer_filter) &&
657 os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700658 p2p_dbg(p2p, "Do not add peer filter for " MACSTR
659 " due to peer filter", MAC2STR(p2p_dev_addr));
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800660 p2p_parse_free(&msg);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700661 return 0;
662 }
663
664 dev = p2p_create_device(p2p, p2p_dev_addr);
665 if (dev == NULL) {
666 p2p_parse_free(&msg);
667 return -1;
668 }
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800669
Dmitry Shmidtf8623282013-02-20 14:34:59 -0800670 if (rx_time == NULL) {
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800671 os_get_reltime(&time_now);
Dmitry Shmidtf8623282013-02-20 14:34:59 -0800672 rx_time = &time_now;
673 }
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800674
675 /*
676 * Update the device entry only if the new peer
677 * entry is newer than the one previously stored.
678 */
Dmitry Shmidtf8623282013-02-20 14:34:59 -0800679 if (dev->last_seen.sec > 0 &&
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800680 os_reltime_before(rx_time, &dev->last_seen)) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700681 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 -0800682 (unsigned int) rx_time->sec,
683 (unsigned int) rx_time->usec,
684 (unsigned int) dev->last_seen.sec,
685 (unsigned int) dev->last_seen.usec);
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800686 p2p_parse_free(&msg);
687 return -1;
688 }
689
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -0800690 os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800691
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700692 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
693
694 if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
695 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
696 if (msg.ssid &&
697 (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
698 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
699 != 0)) {
700 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
701 dev->oper_ssid_len = msg.ssid[1];
702 }
703
704 if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
705 *msg.ds_params >= 1 && *msg.ds_params <= 14) {
706 int ds_freq;
707 if (*msg.ds_params == 14)
708 ds_freq = 2484;
709 else
710 ds_freq = 2407 + *msg.ds_params * 5;
711 if (freq != ds_freq) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700712 p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700713 freq, ds_freq);
714 freq = ds_freq;
715 }
716 }
717
Dmitry Shmidt04949592012-07-19 12:16:46 -0700718 if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700719 p2p_dbg(p2p, "Update Listen frequency based on scan results ("
720 MACSTR " %d -> %d MHz (DS param %d)",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700721 MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
722 freq, msg.ds_params ? *msg.ds_params : -1);
723 }
Dmitry Shmidt04949592012-07-19 12:16:46 -0700724 if (scan_res) {
725 dev->listen_freq = freq;
726 if (msg.group_info)
727 dev->oper_freq = freq;
728 }
Jouni Malinen75ecf522011-06-27 15:19:46 -0700729 dev->info.level = level;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700730
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700731 p2p_copy_wps_info(p2p, dev, 0, &msg);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700732
733 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
734 wpabuf_free(dev->info.wps_vendor_ext[i]);
735 dev->info.wps_vendor_ext[i] = NULL;
736 }
737
738 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
739 if (msg.wps_vendor_ext[i] == NULL)
740 break;
741 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
742 msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
743 if (dev->info.wps_vendor_ext[i] == NULL)
744 break;
745 }
746
Dmitry Shmidt61d9df32012-08-29 16:22:06 -0700747 if (msg.wfd_subelems) {
748 wpabuf_free(dev->info.wfd_subelems);
749 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
750 }
751
Dmitry Shmidt04949592012-07-19 12:16:46 -0700752 if (scan_res) {
753 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
754 msg.group_info, msg.group_info_len);
755 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700756
757 p2p_parse_free(&msg);
758
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700759 if (dev->flags & P2P_DEV_REPORTED)
760 return 0;
761
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700762 p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)",
763 freq, (unsigned int) rx_time->sec,
Dmitry Shmidtf8623282013-02-20 14:34:59 -0800764 (unsigned int) rx_time->usec);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700765 if (dev->flags & P2P_DEV_USER_REJECTED) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700766 p2p_dbg(p2p, "Do not report rejected device");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700767 return 0;
768 }
769
Dmitry Shmidtf8623282013-02-20 14:34:59 -0800770 if (dev->info.config_methods == 0 &&
771 (freq == 2412 || freq == 2437 || freq == 2462)) {
772 /*
773 * If we have only seen a Beacon frame from a GO, we do not yet
774 * know what WPS config methods it supports. Since some
775 * applications use config_methods value from P2P-DEVICE-FOUND
776 * events, postpone reporting this peer until we've fully
777 * discovered its capabilities.
778 *
779 * At least for now, do this only if the peer was detected on
780 * one of the social channels since that peer can be easily be
781 * found again and there are no limitations of having to use
782 * passive scan on this channels, so this can be done through
783 * Probe Response frame that includes the config_methods
784 * information.
785 */
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700786 p2p_dbg(p2p, "Do not report peer " MACSTR
787 " with unknown config methods", MAC2STR(addr));
Dmitry Shmidtf8623282013-02-20 14:34:59 -0800788 return 0;
789 }
790
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700791 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
792 !(dev->flags & P2P_DEV_REPORTED_ONCE));
793 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
794
795 return 0;
796}
797
798
799static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
800{
801 int i;
802
Dmitry Shmidt497c1d52011-07-21 15:19:46 -0700803 if (p2p->go_neg_peer == dev) {
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800804 /*
805 * If GO Negotiation is in progress, report that it has failed.
806 */
Dmitry Shmidt497c1d52011-07-21 15:19:46 -0700807 p2p_go_neg_failed(p2p, dev, -1);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700808 p2p->go_neg_peer = NULL;
Dmitry Shmidt497c1d52011-07-21 15:19:46 -0700809 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700810 if (p2p->invite_peer == dev)
811 p2p->invite_peer = NULL;
812 if (p2p->sd_peer == dev)
813 p2p->sd_peer = NULL;
814 if (p2p->pending_client_disc_go == dev)
815 p2p->pending_client_disc_go = NULL;
816
Dmitry Shmidtc55524a2011-07-07 11:18:38 -0700817 /* dev_lost() device, but only if it was previously dev_found() */
818 if (dev->flags & P2P_DEV_REPORTED_ONCE)
819 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
820 dev->info.p2p_device_addr);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700821
822 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
823 wpabuf_free(dev->info.wps_vendor_ext[i]);
824 dev->info.wps_vendor_ext[i] = NULL;
825 }
826
Dmitry Shmidt61d9df32012-08-29 16:22:06 -0700827 wpabuf_free(dev->info.wfd_subelems);
Dmitry Shmidt413dde72014-04-11 10:23:22 -0700828 wpabuf_free(dev->go_neg_conf);
Dmitry Shmidt61d9df32012-08-29 16:22:06 -0700829
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700830 os_free(dev);
831}
832
833
834static int p2p_get_next_prog_freq(struct p2p_data *p2p)
835{
836 struct p2p_channels *c;
837 struct p2p_reg_class *cla;
838 size_t cl, ch;
839 int found = 0;
840 u8 reg_class;
841 u8 channel;
842 int freq;
843
844 c = &p2p->cfg->channels;
845 for (cl = 0; cl < c->reg_classes; cl++) {
846 cla = &c->reg_class[cl];
847 if (cla->reg_class != p2p->last_prog_scan_class)
848 continue;
849 for (ch = 0; ch < cla->channels; ch++) {
850 if (cla->channel[ch] == p2p->last_prog_scan_chan) {
851 found = 1;
852 break;
853 }
854 }
855 if (found)
856 break;
857 }
858
859 if (!found) {
860 /* Start from beginning */
861 reg_class = c->reg_class[0].reg_class;
862 channel = c->reg_class[0].channel[0];
863 } else {
864 /* Pick the next channel */
865 ch++;
866 if (ch == cla->channels) {
867 cl++;
868 if (cl == c->reg_classes)
869 cl = 0;
870 ch = 0;
871 }
872 reg_class = c->reg_class[cl].reg_class;
873 channel = c->reg_class[cl].channel[ch];
874 }
875
Dmitry Shmidt4b060592013-04-29 16:42:49 -0700876 freq = p2p_channel_to_freq(reg_class, channel);
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700877 p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700878 reg_class, channel, freq);
879 p2p->last_prog_scan_class = reg_class;
880 p2p->last_prog_scan_chan = channel;
881
882 if (freq == 2412 || freq == 2437 || freq == 2462)
883 return 0; /* No need to add social channels */
884 return freq;
885}
886
887
888static void p2p_search(struct p2p_data *p2p)
889{
890 int freq = 0;
891 enum p2p_scan_type type;
Dmitry Shmidt04949592012-07-19 12:16:46 -0700892 u16 pw_id = DEV_PW_DEFAULT;
Dmitry Shmidt61d9df32012-08-29 16:22:06 -0700893 int res;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700894
895 if (p2p->drv_in_listen) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700896 p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700897 return;
898 }
899 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
900
Dmitry Shmidt04949592012-07-19 12:16:46 -0700901 if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
902 (freq = p2p_get_next_prog_freq(p2p)) > 0) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700903 type = P2P_SCAN_SOCIAL_PLUS_ONE;
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700904 p2p_dbg(p2p, "Starting search (+ freq %u)", freq);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700905 } else {
906 type = P2P_SCAN_SOCIAL;
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700907 p2p_dbg(p2p, "Starting search");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700908 }
909
Dmitry Shmidt61d9df32012-08-29 16:22:06 -0700910 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
911 p2p->num_req_dev_types, p2p->req_dev_types,
912 p2p->find_dev_id, pw_id);
913 if (res < 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700914 p2p_dbg(p2p, "Scan request failed");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700915 p2p_continue_find(p2p);
916 } else {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700917 p2p_dbg(p2p, "Running p2p_scan");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700918 p2p->p2p_scan_running = 1;
919 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
920 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
921 p2p, NULL);
922 }
923}
924
925
926static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
927{
928 struct p2p_data *p2p = eloop_ctx;
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700929 p2p_dbg(p2p, "Find timeout -> stop");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700930 p2p_stop_find(p2p);
931}
932
933
934static int p2p_run_after_scan(struct p2p_data *p2p)
935{
936 struct p2p_device *dev;
937 enum p2p_after_scan op;
938
939 if (p2p->after_scan_tx) {
Dmitry Shmidt8da800a2013-04-24 12:57:01 -0700940 p2p->after_scan_tx_in_progress = 1;
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700941 p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion");
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800942 p2p->cfg->send_action(p2p->cfg->cb_ctx,
943 p2p->after_scan_tx->freq,
944 p2p->after_scan_tx->dst,
945 p2p->after_scan_tx->src,
946 p2p->after_scan_tx->bssid,
947 (u8 *) (p2p->after_scan_tx + 1),
948 p2p->after_scan_tx->len,
949 p2p->after_scan_tx->wait_time);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700950 os_free(p2p->after_scan_tx);
951 p2p->after_scan_tx = NULL;
952 return 1;
953 }
954
955 op = p2p->start_after_scan;
956 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
957 switch (op) {
958 case P2P_AFTER_SCAN_NOTHING:
959 break;
960 case P2P_AFTER_SCAN_LISTEN:
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700961 p2p_dbg(p2p, "Start previously requested Listen state");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700962 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
963 p2p->pending_listen_usec / 1000);
964 return 1;
965 case P2P_AFTER_SCAN_CONNECT:
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700966 p2p_dbg(p2p, "Start previously requested connect with " MACSTR,
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700967 MAC2STR(p2p->after_scan_peer));
968 dev = p2p_get_device(p2p, p2p->after_scan_peer);
969 if (dev == NULL) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700970 p2p_dbg(p2p, "Peer not known anymore");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700971 break;
972 }
973 p2p_connect_send(p2p, dev);
974 return 1;
975 }
976
977 return 0;
978}
979
980
981static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
982{
983 struct p2p_data *p2p = eloop_ctx;
984 int running;
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -0700985 p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700986 running = p2p->p2p_scan_running;
987 /* Make sure we recover from missed scan results callback */
988 p2p->p2p_scan_running = 0;
989
990 if (running)
991 p2p_run_after_scan(p2p);
992}
993
994
995static void p2p_free_req_dev_types(struct p2p_data *p2p)
996{
997 p2p->num_req_dev_types = 0;
998 os_free(p2p->req_dev_types);
999 p2p->req_dev_types = NULL;
1000}
1001
1002
1003int p2p_find(struct p2p_data *p2p, unsigned int timeout,
1004 enum p2p_discovery_type type,
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08001005 unsigned int num_req_dev_types, const u8 *req_dev_types,
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001006 const u8 *dev_id, unsigned int search_delay)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001007{
1008 int res;
1009
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001010 p2p_dbg(p2p, "Starting find (type=%d)", type);
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08001011 os_get_reltime(&p2p->find_start);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001012 if (p2p->p2p_scan_running) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001013 p2p_dbg(p2p, "p2p_scan is already running");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001014 }
1015
1016 p2p_free_req_dev_types(p2p);
1017 if (req_dev_types && num_req_dev_types) {
1018 p2p->req_dev_types = os_malloc(num_req_dev_types *
1019 WPS_DEV_TYPE_LEN);
1020 if (p2p->req_dev_types == NULL)
1021 return -1;
1022 os_memcpy(p2p->req_dev_types, req_dev_types,
1023 num_req_dev_types * WPS_DEV_TYPE_LEN);
1024 p2p->num_req_dev_types = num_req_dev_types;
1025 }
1026
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08001027 if (dev_id) {
1028 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
1029 p2p->find_dev_id = p2p->find_dev_id_buf;
1030 } else
1031 p2p->find_dev_id = NULL;
1032
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001033 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1034 p2p_clear_timeout(p2p);
1035 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1036 p2p->find_type = type;
1037 p2p_device_clear_reported(p2p);
1038 p2p_set_state(p2p, P2P_SEARCH);
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001039 p2p->search_delay = search_delay;
1040 p2p->in_search_delay = 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001041 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001042 p2p->last_p2p_find_timeout = timeout;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001043 if (timeout)
1044 eloop_register_timeout(timeout, 0, p2p_find_timeout,
1045 p2p, NULL);
1046 switch (type) {
1047 case P2P_FIND_START_WITH_FULL:
1048 case P2P_FIND_PROGRESSIVE:
1049 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1050 p2p->num_req_dev_types,
Dmitry Shmidt04949592012-07-19 12:16:46 -07001051 p2p->req_dev_types, dev_id,
1052 DEV_PW_DEFAULT);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001053 break;
1054 case P2P_FIND_ONLY_SOCIAL:
1055 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1056 p2p->num_req_dev_types,
Dmitry Shmidt04949592012-07-19 12:16:46 -07001057 p2p->req_dev_types, dev_id,
1058 DEV_PW_DEFAULT);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001059 break;
1060 default:
1061 return -1;
1062 }
1063
1064 if (res == 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001065 p2p_dbg(p2p, "Running p2p_scan");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001066 p2p->p2p_scan_running = 1;
1067 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1068 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1069 p2p, NULL);
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08001070 } else if (p2p->p2p_scan_running) {
1071 p2p_dbg(p2p, "Failed to start p2p_scan - another p2p_scan was already running");
1072 /* wait for the previous p2p_scan to complete */
Dmitry Shmidt96be6222014-02-13 10:16:51 -08001073 res = 0; /* do not report failure */
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001074 } else {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001075 p2p_dbg(p2p, "Failed to start p2p_scan");
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001076 p2p_set_state(p2p, P2P_IDLE);
1077 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001078 }
1079
1080 return res;
1081}
1082
1083
1084void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1085{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001086 p2p_dbg(p2p, "Stopping find");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001087 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1088 p2p_clear_timeout(p2p);
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08001089 if (p2p->state == P2P_SEARCH)
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001090 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001091 p2p_set_state(p2p, P2P_IDLE);
1092 p2p_free_req_dev_types(p2p);
1093 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
Dmitry Shmidt8c652892013-03-01 10:14:01 -08001094 if (p2p->go_neg_peer)
1095 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001096 p2p->go_neg_peer = NULL;
1097 p2p->sd_peer = NULL;
1098 p2p->invite_peer = NULL;
Dmitry Shmidt04949592012-07-19 12:16:46 -07001099 p2p_stop_listen_for_freq(p2p, freq);
1100}
1101
1102
1103void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1104{
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001105 if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001106 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001107 return;
1108 }
Dmitry Shmidt04949592012-07-19 12:16:46 -07001109 if (p2p->in_listen) {
1110 p2p->in_listen = 0;
1111 p2p_clear_timeout(p2p);
1112 }
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001113 if (p2p->drv_in_listen) {
1114 /*
1115 * The driver may not deliver callback to p2p_listen_end()
1116 * when the operation gets canceled, so clear the internal
1117 * variable that is tracking driver state.
1118 */
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001119 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001120 p2p->drv_in_listen = 0;
1121 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001122 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1123}
1124
1125
Dmitry Shmidt391c59f2013-09-03 12:16:28 -07001126void p2p_stop_listen(struct p2p_data *p2p)
1127{
1128 if (p2p->state != P2P_LISTEN_ONLY) {
1129 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state.");
1130 return;
1131 }
1132
1133 p2p_stop_listen_for_freq(p2p, 0);
1134 p2p_set_state(p2p, P2P_IDLE);
1135}
1136
1137
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001138void p2p_stop_find(struct p2p_data *p2p)
1139{
Dmitry Shmidt3c57b3f2014-05-22 15:13:07 -07001140 p2p->pending_listen_freq = 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001141 p2p_stop_find_for_freq(p2p, 0);
1142}
1143
1144
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001145static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1146 unsigned int force_freq,
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07001147 unsigned int pref_freq, int go)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001148{
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001149 u8 op_class, op_channel;
1150 unsigned int freq = force_freq ? force_freq : pref_freq;
1151
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07001152 p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d",
1153 force_freq, pref_freq, go);
Dmitry Shmidt4b060592013-04-29 16:42:49 -07001154 if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001155 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq);
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001156 return -1;
1157 }
1158
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07001159 if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) &&
1160 (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class,
1161 op_channel))) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001162 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P",
1163 freq, op_class, op_channel);
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001164 return -1;
1165 }
1166
1167 p2p->op_reg_class = op_class;
1168 p2p->op_channel = op_channel;
1169
1170 if (force_freq) {
1171 p2p->channels.reg_classes = 1;
1172 p2p->channels.reg_class[0].channels = 1;
1173 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1174 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001175 } else {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001176 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1177 sizeof(struct p2p_channels));
1178 }
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001179
1180 return 0;
1181}
1182
1183
1184static void p2p_prepare_channel_best(struct p2p_data *p2p)
1185{
1186 u8 op_class, op_channel;
Dmitry Shmidta0d265f2013-11-19 13:13:41 -08001187 const int op_classes_5ghz[] = { 124, 115, 0 };
1188 const int op_classes_ht40[] = { 126, 127, 116, 117, 0 };
Dmitry Shmidte0e48dc2013-11-18 12:00:06 -08001189 const int op_classes_vht[] = { 128, 0 };
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001190
Dmitry Shmidtb7b4d0e2013-08-26 12:09:05 -07001191 p2p_dbg(p2p, "Prepare channel best");
1192
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001193 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1194 p2p_supported_freq(p2p, p2p->best_freq_overall) &&
Dmitry Shmidt4b060592013-04-29 16:42:49 -07001195 p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1196 == 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001197 p2p_dbg(p2p, "Select best overall channel as operating channel preference");
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001198 p2p->op_reg_class = op_class;
1199 p2p->op_channel = op_channel;
1200 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1201 p2p_supported_freq(p2p, p2p->best_freq_5) &&
Dmitry Shmidt4b060592013-04-29 16:42:49 -07001202 p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1203 == 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001204 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001205 p2p->op_reg_class = op_class;
1206 p2p->op_channel = op_channel;
1207 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1208 p2p_supported_freq(p2p, p2p->best_freq_24) &&
Dmitry Shmidt4b060592013-04-29 16:42:49 -07001209 p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1210 &op_channel) == 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001211 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001212 p2p->op_reg_class = op_class;
1213 p2p->op_channel = op_channel;
Dmitry Shmidtb7b4d0e2013-08-26 12:09:05 -07001214 } else if (p2p->cfg->num_pref_chan > 0 &&
1215 p2p_channels_includes(&p2p->cfg->channels,
1216 p2p->cfg->pref_chan[0].op_class,
1217 p2p->cfg->pref_chan[0].chan)) {
1218 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference");
1219 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class;
1220 p2p->op_channel = p2p->cfg->pref_chan[0].chan;
Dmitry Shmidte0e48dc2013-11-18 12:00:06 -08001221 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht,
1222 &p2p->op_reg_class, &p2p->op_channel) ==
1223 0) {
1224 p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference",
1225 p2p->op_reg_class, p2p->op_channel);
1226 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40,
1227 &p2p->op_reg_class, &p2p->op_channel) ==
1228 0) {
1229 p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference",
1230 p2p->op_reg_class, p2p->op_channel);
1231 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz,
1232 &p2p->op_reg_class, &p2p->op_channel) ==
1233 0) {
1234 p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference",
1235 p2p->op_reg_class, p2p->op_channel);
Dmitry Shmidtd11f0192014-03-24 12:09:47 -07001236 } else if (p2p_channels_includes(&p2p->cfg->channels,
1237 p2p->cfg->op_reg_class,
1238 p2p->cfg->op_channel)) {
Dmitry Shmidtb7b4d0e2013-08-26 12:09:05 -07001239 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference");
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001240 p2p->op_reg_class = p2p->cfg->op_reg_class;
1241 p2p->op_channel = p2p->cfg->op_channel;
Dmitry Shmidtd11f0192014-03-24 12:09:47 -07001242 } else if (p2p_channel_random_social(&p2p->cfg->channels,
1243 &p2p->op_reg_class,
1244 &p2p->op_channel) == 0) {
1245 p2p_dbg(p2p, "Select random available social channel %d from 2.4 GHz band as operating channel preference",
1246 p2p->op_channel);
1247 } else {
1248 /* Select any random available channel from the first available
1249 * operating class */
1250 p2p_channel_select(&p2p->cfg->channels, NULL,
1251 &p2p->op_reg_class,
1252 &p2p->op_channel);
1253 p2p_dbg(p2p, "Select random available channel %d from operating class %d as operating channel preference",
1254 p2p->op_channel, p2p->op_reg_class);
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001255 }
1256
1257 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1258 sizeof(struct p2p_channels));
1259}
1260
1261
1262/**
1263 * p2p_prepare_channel - Select operating channel for GO Negotiation
1264 * @p2p: P2P module context from p2p_init()
1265 * @dev: Selected peer device
1266 * @force_freq: Forced frequency in MHz or 0 if not forced
1267 * @pref_freq: Preferred frequency in MHz or 0 if no preference
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07001268 * @go: Whether the local end will be forced to be GO
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001269 * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1270 *
1271 * This function is used to do initial operating channel selection for GO
1272 * Negotiation prior to having received peer information. The selected channel
1273 * may be further optimized in p2p_reselect_channel() once the peer information
1274 * is available.
1275 */
Dmitry Shmidt7a5e50a2013-03-05 12:37:16 -08001276int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07001277 unsigned int force_freq, unsigned int pref_freq, int go)
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001278{
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07001279 p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d",
1280 force_freq, pref_freq, go);
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001281 if (force_freq || pref_freq) {
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07001282 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) <
1283 0)
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001284 return -1;
1285 } else {
1286 p2p_prepare_channel_best(p2p);
1287 }
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07001288 p2p_channels_dump(p2p, "prepared channels", &p2p->channels);
1289 if (go)
1290 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq);
1291 else if (!force_freq)
1292 p2p_channels_union(&p2p->channels, &p2p->cfg->cli_channels,
1293 &p2p->channels);
1294 p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels);
1295
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001296 p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001297 p2p->op_reg_class, p2p->op_channel,
1298 force_freq ? " (forced)" : "");
1299
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001300 if (force_freq)
1301 dev->flags |= P2P_DEV_FORCE_FREQ;
1302 else
1303 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1304
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001305 return 0;
1306}
1307
1308
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001309static void p2p_set_dev_persistent(struct p2p_device *dev,
1310 int persistent_group)
1311{
1312 switch (persistent_group) {
1313 case 0:
1314 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1315 P2P_DEV_PREFER_PERSISTENT_RECONN);
1316 break;
1317 case 1:
1318 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1319 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1320 break;
1321 case 2:
1322 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1323 P2P_DEV_PREFER_PERSISTENT_RECONN;
1324 break;
1325 }
1326}
1327
1328
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001329int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1330 enum p2p_wps_method wps_method,
1331 int go_intent, const u8 *own_interface_addr,
Dmitry Shmidt04949592012-07-19 12:16:46 -07001332 unsigned int force_freq, int persistent_group,
1333 const u8 *force_ssid, size_t force_ssid_len,
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08001334 int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001335{
1336 struct p2p_device *dev;
1337
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001338 p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001339 " GO Intent=%d Intended Interface Address=" MACSTR
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08001340 " wps_method=%d persistent_group=%d pd_before_go_neg=%d "
1341 "oob_pw_id=%u",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001342 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08001343 wps_method, persistent_group, pd_before_go_neg, oob_pw_id);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001344
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001345 dev = p2p_get_device(p2p, peer_addr);
1346 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001347 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001348 MAC2STR(peer_addr));
1349 return -1;
1350 }
1351
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07001352 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq,
1353 go_intent == 15) < 0)
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001354 return -1;
1355
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001356 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1357 if (!(dev->info.dev_capab &
1358 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001359 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001360 " that is in a group and is not discoverable",
1361 MAC2STR(peer_addr));
1362 return -1;
1363 }
1364 if (dev->oper_freq <= 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001365 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001366 " with incomplete information",
1367 MAC2STR(peer_addr));
1368 return -1;
1369 }
1370
1371 /*
1372 * First, try to connect directly. If the peer does not
1373 * acknowledge frames, assume it is sleeping and use device
1374 * discoverability via the GO at that point.
1375 */
1376 }
1377
Dmitry Shmidt04949592012-07-19 12:16:46 -07001378 p2p->ssid_set = 0;
1379 if (force_ssid) {
1380 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1381 force_ssid, force_ssid_len);
1382 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1383 p2p->ssid_len = force_ssid_len;
1384 p2p->ssid_set = 1;
1385 }
1386
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001387 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1388 dev->flags &= ~P2P_DEV_USER_REJECTED;
1389 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1390 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
Dmitry Shmidt04949592012-07-19 12:16:46 -07001391 if (pd_before_go_neg)
1392 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001393 else {
Dmitry Shmidt04949592012-07-19 12:16:46 -07001394 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001395 /*
Dmitry Shmidt9cdf1b92013-02-27 12:58:50 -08001396 * Assign dialog token and tie breaker here to use the same
1397 * values in each retry within the same GO Negotiation exchange.
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001398 */
1399 dev->dialog_token++;
1400 if (dev->dialog_token == 0)
1401 dev->dialog_token = 1;
Dmitry Shmidt9cdf1b92013-02-27 12:58:50 -08001402 dev->tie_breaker = p2p->next_tie_breaker;
1403 p2p->next_tie_breaker = !p2p->next_tie_breaker;
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001404 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001405 dev->connect_reqs = 0;
1406 dev->go_neg_req_sent = 0;
1407 dev->go_state = UNKNOWN_GO;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001408 p2p_set_dev_persistent(dev, persistent_group);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001409 p2p->go_intent = go_intent;
1410 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1411
1412 if (p2p->state != P2P_IDLE)
1413 p2p_stop_find(p2p);
1414
1415 if (p2p->after_scan_tx) {
1416 /*
1417 * We need to drop the pending frame to avoid issues with the
1418 * new GO Negotiation, e.g., when the pending frame was from a
1419 * previous attempt at starting a GO Negotiation.
1420 */
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001421 p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001422 os_free(p2p->after_scan_tx);
1423 p2p->after_scan_tx = NULL;
1424 }
1425
1426 dev->wps_method = wps_method;
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08001427 dev->oob_pw_id = oob_pw_id;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001428 dev->status = P2P_SC_SUCCESS;
1429
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001430 if (p2p->p2p_scan_running) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001431 p2p_dbg(p2p, "p2p_scan running - delay connect send");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001432 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1433 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1434 return 0;
1435 }
1436 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1437
1438 return p2p_connect_send(p2p, dev);
1439}
1440
1441
1442int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1443 enum p2p_wps_method wps_method,
1444 int go_intent, const u8 *own_interface_addr,
Dmitry Shmidt04949592012-07-19 12:16:46 -07001445 unsigned int force_freq, int persistent_group,
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001446 const u8 *force_ssid, size_t force_ssid_len,
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08001447 unsigned int pref_freq, u16 oob_pw_id)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001448{
1449 struct p2p_device *dev;
1450
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001451 p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001452 " GO Intent=%d Intended Interface Address=" MACSTR
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08001453 " wps_method=%d persistent_group=%d oob_pw_id=%u",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001454 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08001455 wps_method, persistent_group, oob_pw_id);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001456
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001457 dev = p2p_get_device(p2p, peer_addr);
1458 if (dev == NULL) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001459 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001460 MAC2STR(peer_addr));
1461 return -1;
1462 }
1463
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07001464 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent ==
1465 15) < 0)
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08001466 return -1;
1467
Dmitry Shmidt04949592012-07-19 12:16:46 -07001468 p2p->ssid_set = 0;
1469 if (force_ssid) {
1470 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1471 force_ssid, force_ssid_len);
1472 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1473 p2p->ssid_len = force_ssid_len;
1474 p2p->ssid_set = 1;
1475 }
1476
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001477 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1478 dev->flags &= ~P2P_DEV_USER_REJECTED;
1479 dev->go_neg_req_sent = 0;
1480 dev->go_state = UNKNOWN_GO;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001481 p2p_set_dev_persistent(dev, persistent_group);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001482 p2p->go_intent = go_intent;
1483 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1484
1485 dev->wps_method = wps_method;
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08001486 dev->oob_pw_id = oob_pw_id;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001487 dev->status = P2P_SC_SUCCESS;
1488
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001489 return 0;
1490}
1491
1492
1493void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1494 struct p2p_device *dev, struct p2p_message *msg)
1495{
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08001496 os_get_reltime(&dev->last_seen);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001497
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001498 p2p_copy_wps_info(p2p, dev, 0, msg);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001499
1500 if (msg->listen_channel) {
1501 int freq;
Dmitry Shmidt4b060592013-04-29 16:42:49 -07001502 freq = p2p_channel_to_freq(msg->listen_channel[3],
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001503 msg->listen_channel[4]);
1504 if (freq < 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001505 p2p_dbg(p2p, "Unknown peer Listen channel: "
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001506 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1507 msg->listen_channel[0],
1508 msg->listen_channel[1],
1509 msg->listen_channel[2],
1510 msg->listen_channel[3],
1511 msg->listen_channel[4]);
1512 } else {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001513 p2p_dbg(p2p, "Update peer " MACSTR
1514 " Listen channel: %u -> %u MHz",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001515 MAC2STR(dev->info.p2p_device_addr),
1516 dev->listen_freq, freq);
1517 dev->listen_freq = freq;
1518 }
1519 }
1520
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001521 if (msg->wfd_subelems) {
1522 wpabuf_free(dev->info.wfd_subelems);
1523 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1524 }
1525
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001526 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1527 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001528 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001529 } else {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001530 p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001531 MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1532 "listen_freq=%d",
1533 MAC2STR(dev->info.p2p_device_addr),
1534 dev->info.dev_capab, dev->info.group_capab,
1535 dev->info.device_name, dev->listen_freq);
1536 }
1537
1538 dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1539
1540 if (dev->flags & P2P_DEV_USER_REJECTED) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001541 p2p_dbg(p2p, "Do not report rejected device");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001542 return;
1543 }
1544
1545 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1546 !(dev->flags & P2P_DEV_REPORTED_ONCE));
1547 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1548}
1549
1550
1551void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1552{
1553 os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1554 p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1555 os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1556 p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1557 *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1558}
1559
1560
1561int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1562{
1563 p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1564 p2p_random(params->passphrase, 8);
1565 return 0;
1566}
1567
1568
1569void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1570{
1571 struct p2p_go_neg_results res;
1572 int go = peer->go_state == LOCAL_GO;
1573 struct p2p_channels intersection;
1574 int freqs;
1575 size_t i, j;
1576
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001577 p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1578 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001579
1580 os_memset(&res, 0, sizeof(res));
1581 res.role_go = go;
1582 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1583 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1584 res.wps_method = peer->wps_method;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001585 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1586 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1587 res.persistent_group = 2;
1588 else
1589 res.persistent_group = 1;
1590 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001591
1592 if (go) {
1593 /* Setup AP mode for WPS provisioning */
Dmitry Shmidt4b060592013-04-29 16:42:49 -07001594 res.freq = p2p_channel_to_freq(p2p->op_reg_class,
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001595 p2p->op_channel);
1596 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1597 res.ssid_len = p2p->ssid_len;
1598 p2p_random(res.passphrase, 8);
1599 } else {
1600 res.freq = peer->oper_freq;
1601 if (p2p->ssid_len) {
1602 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1603 res.ssid_len = p2p->ssid_len;
1604 }
1605 }
1606
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07001607 p2p_channels_dump(p2p, "own channels", &p2p->channels);
1608 p2p_channels_dump(p2p, "peer channels", &peer->channels);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001609 p2p_channels_intersect(&p2p->channels, &peer->channels,
1610 &intersection);
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07001611 if (go) {
1612 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq);
1613 p2p_channels_dump(p2p, "intersection after no-GO removal",
1614 &intersection);
1615 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001616 freqs = 0;
1617 for (i = 0; i < intersection.reg_classes; i++) {
1618 struct p2p_reg_class *c = &intersection.reg_class[i];
1619 if (freqs + 1 == P2P_MAX_CHANNELS)
1620 break;
1621 for (j = 0; j < c->channels; j++) {
1622 int freq;
1623 if (freqs + 1 == P2P_MAX_CHANNELS)
1624 break;
Dmitry Shmidt4b060592013-04-29 16:42:49 -07001625 freq = p2p_channel_to_freq(c->reg_class, c->channel[j]);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001626 if (freq < 0)
1627 continue;
1628 res.freq_list[freqs++] = freq;
1629 }
1630 }
1631
1632 res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1633
1634 p2p_clear_timeout(p2p);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001635 p2p->ssid_set = 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001636 peer->go_neg_req_sent = 0;
1637 peer->wps_method = WPS_NOT_READY;
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08001638 peer->oob_pw_id = 0;
Dmitry Shmidt413dde72014-04-11 10:23:22 -07001639 wpabuf_free(peer->go_neg_conf);
1640 peer->go_neg_conf = NULL;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001641
1642 p2p_set_state(p2p, P2P_PROVISIONING);
1643 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1644}
1645
1646
1647static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1648 const u8 *data, size_t len, int rx_freq)
1649{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001650 p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001651 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1652
1653 if (len < 1)
1654 return;
1655
1656 switch (data[0]) {
1657 case P2P_GO_NEG_REQ:
1658 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1659 break;
1660 case P2P_GO_NEG_RESP:
1661 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1662 break;
1663 case P2P_GO_NEG_CONF:
1664 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1665 break;
1666 case P2P_INVITATION_REQ:
1667 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1668 rx_freq);
1669 break;
1670 case P2P_INVITATION_RESP:
Dmitry Shmidt051af732013-10-22 13:52:46 -07001671 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001672 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1673 break;
1674 case P2P_PROV_DISC_REQ:
1675 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1676 break;
1677 case P2P_PROV_DISC_RESP:
1678 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1679 break;
1680 case P2P_DEV_DISC_REQ:
1681 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1682 break;
1683 case P2P_DEV_DISC_RESP:
1684 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1685 break;
1686 default:
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001687 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001688 data[0]);
1689 break;
1690 }
1691}
1692
1693
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001694static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1695 const u8 *sa, const u8 *bssid, const u8 *data,
1696 size_t len, int freq)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001697{
1698 if (len < 1)
1699 return;
1700
1701 switch (data[0]) {
1702 case WLAN_PA_VENDOR_SPECIFIC:
1703 data++;
1704 len--;
Dmitry Shmidta38abf92014-03-06 13:38:44 -08001705 if (len < 4)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001706 return;
Dmitry Shmidta38abf92014-03-06 13:38:44 -08001707 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001708 return;
1709
Dmitry Shmidta38abf92014-03-06 13:38:44 -08001710 data += 4;
1711 len -= 4;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001712
Dmitry Shmidta38abf92014-03-06 13:38:44 -08001713 p2p_rx_p2p_action(p2p, sa, data, len, freq);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001714 break;
1715 case WLAN_PA_GAS_INITIAL_REQ:
1716 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1717 break;
1718 case WLAN_PA_GAS_INITIAL_RESP:
1719 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1720 break;
1721 case WLAN_PA_GAS_COMEBACK_REQ:
1722 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1723 break;
1724 case WLAN_PA_GAS_COMEBACK_RESP:
1725 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1726 break;
1727 }
1728}
1729
1730
1731void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1732 const u8 *bssid, u8 category,
1733 const u8 *data, size_t len, int freq)
1734{
1735 if (category == WLAN_ACTION_PUBLIC) {
1736 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1737 return;
1738 }
1739
1740 if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1741 return;
1742
1743 if (len < 4)
1744 return;
1745
Dmitry Shmidta38abf92014-03-06 13:38:44 -08001746 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001747 return;
Dmitry Shmidta38abf92014-03-06 13:38:44 -08001748 data += 4;
1749 len -= 4;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001750
1751 /* P2P action frame */
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001752 p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001753 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1754
1755 if (len < 1)
1756 return;
1757 switch (data[0]) {
1758 case P2P_NOA:
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001759 p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001760 /* TODO */
1761 break;
1762 case P2P_PRESENCE_REQ:
1763 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1764 break;
1765 case P2P_PRESENCE_RESP:
1766 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1767 break;
1768 case P2P_GO_DISC_REQ:
1769 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1770 break;
1771 default:
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001772 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001773 break;
1774 }
1775}
1776
1777
1778static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1779{
1780 struct p2p_data *p2p = eloop_ctx;
1781 if (p2p->go_neg_peer == NULL)
1782 return;
1783 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1784 p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1785 p2p_connect_send(p2p, p2p->go_neg_peer);
1786}
1787
1788
1789static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1790{
1791 struct p2p_data *p2p = eloop_ctx;
1792 if (p2p->invite_peer == NULL)
1793 return;
1794 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08001795 p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr,
1796 p2p->invite_dev_pw_id);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001797}
1798
1799
1800static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1801 const u8 *ie, size_t ie_len)
1802{
1803 struct p2p_message msg;
1804 struct p2p_device *dev;
1805
1806 os_memset(&msg, 0, sizeof(msg));
1807 if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1808 {
1809 p2p_parse_free(&msg);
1810 return; /* not a P2P probe */
1811 }
1812
1813 if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
1814 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
1815 != 0) {
1816 /* The Probe Request is not part of P2P Device Discovery. It is
1817 * not known whether the source address of the frame is the P2P
1818 * Device Address or P2P Interface Address. Do not add a new
1819 * peer entry based on this frames.
1820 */
1821 p2p_parse_free(&msg);
1822 return;
1823 }
1824
1825 dev = p2p_get_device(p2p, addr);
1826 if (dev) {
1827 if (dev->country[0] == 0 && msg.listen_channel)
1828 os_memcpy(dev->country, msg.listen_channel, 3);
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08001829 os_get_reltime(&dev->last_seen);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001830 p2p_parse_free(&msg);
1831 return; /* already known */
1832 }
1833
1834 dev = p2p_create_device(p2p, addr);
1835 if (dev == NULL) {
1836 p2p_parse_free(&msg);
1837 return;
1838 }
1839
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08001840 os_get_reltime(&dev->last_seen);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001841 dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
1842
1843 if (msg.listen_channel) {
1844 os_memcpy(dev->country, msg.listen_channel, 3);
Dmitry Shmidt4b060592013-04-29 16:42:49 -07001845 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001846 msg.listen_channel[4]);
1847 }
1848
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001849 p2p_copy_wps_info(p2p, dev, 1, &msg);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001850
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001851 if (msg.wfd_subelems) {
1852 wpabuf_free(dev->info.wfd_subelems);
1853 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
1854 }
1855
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001856 p2p_parse_free(&msg);
1857
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07001858 p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001859 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
1860 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
1861 dev->info.group_capab, dev->info.device_name,
1862 dev->listen_freq);
1863}
1864
1865
1866struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
1867 const u8 *addr,
1868 struct p2p_message *msg)
1869{
1870 struct p2p_device *dev;
1871
1872 dev = p2p_get_device(p2p, addr);
1873 if (dev) {
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08001874 os_get_reltime(&dev->last_seen);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001875 return dev; /* already known */
1876 }
1877
1878 dev = p2p_create_device(p2p, addr);
1879 if (dev == NULL)
1880 return NULL;
1881
1882 p2p_add_dev_info(p2p, addr, dev, msg);
1883
1884 return dev;
1885}
1886
1887
1888static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
1889{
1890 if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
1891 return 1;
1892 if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
1893 WPA_GET_BE32(&req_dev_type[2]) == 0 &&
1894 WPA_GET_BE16(&req_dev_type[6]) == 0)
1895 return 1; /* Category match with wildcard OUI/sub-category */
1896 return 0;
1897}
1898
1899
1900int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
1901 size_t num_req_dev_type)
1902{
1903 size_t i;
1904 for (i = 0; i < num_req_dev_type; i++) {
1905 if (dev_type_match(dev_type, req_dev_type[i]))
1906 return 1;
1907 }
1908 return 0;
1909}
1910
1911
1912/**
1913 * p2p_match_dev_type - Match local device type with requested type
1914 * @p2p: P2P module context from p2p_init()
1915 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1916 * Returns: 1 on match, 0 on mismatch
1917 *
1918 * This function can be used to match the Requested Device Type attribute in
1919 * WPS IE with the local device types for deciding whether to reply to a Probe
1920 * Request frame.
1921 */
1922int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
1923{
1924 struct wps_parse_attr attr;
1925 size_t i;
1926
1927 if (wps_parse_msg(wps, &attr))
1928 return 1; /* assume no Requested Device Type attributes */
1929
1930 if (attr.num_req_dev_type == 0)
1931 return 1; /* no Requested Device Type attributes -> match */
1932
1933 if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
1934 attr.num_req_dev_type))
1935 return 1; /* Own Primary Device Type matches */
1936
1937 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++)
1938 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
1939 attr.req_dev_type,
1940 attr.num_req_dev_type))
1941 return 1; /* Own Secondary Device Type matches */
1942
1943 /* No matching device type found */
1944 return 0;
1945}
1946
1947
1948struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
1949{
1950 struct wpabuf *buf;
1951 u8 *len;
Dmitry Shmidt04949592012-07-19 12:16:46 -07001952 int pw_id = -1;
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001953 size_t extra = 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001954
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001955#ifdef CONFIG_WIFI_DISPLAY
1956 if (p2p->wfd_ie_probe_resp)
1957 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
1958#endif /* CONFIG_WIFI_DISPLAY */
1959
1960 buf = wpabuf_alloc(1000 + extra);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001961 if (buf == NULL)
1962 return NULL;
1963
Dmitry Shmidt04949592012-07-19 12:16:46 -07001964 if (p2p->go_neg_peer) {
1965 /* Advertise immediate availability of WPS credential */
1966 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
1967 }
1968
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07001969 if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) {
1970 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response");
1971 wpabuf_free(buf);
1972 return NULL;
1973 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001974
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001975#ifdef CONFIG_WIFI_DISPLAY
1976 if (p2p->wfd_ie_probe_resp)
1977 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
1978#endif /* CONFIG_WIFI_DISPLAY */
1979
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001980 /* P2P IE */
1981 len = p2p_buf_add_ie_hdr(buf);
Dmitry Shmidt04949592012-07-19 12:16:46 -07001982 p2p_buf_add_capability(buf, p2p->dev_capab &
1983 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001984 if (p2p->ext_listen_interval)
1985 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
1986 p2p->ext_listen_interval);
1987 p2p_buf_add_device_info(buf, p2p, NULL);
1988 p2p_buf_update_ie_hdr(buf, len);
1989
1990 return buf;
1991}
1992
1993
Dmitry Shmidt04949592012-07-19 12:16:46 -07001994static enum p2p_probe_req_status
1995p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
1996 const u8 *bssid, const u8 *ie, size_t ie_len)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001997{
1998 struct ieee802_11_elems elems;
1999 struct wpabuf *buf;
2000 struct ieee80211_mgmt *resp;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002001 struct p2p_message msg;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002002 struct wpabuf *ies;
2003
2004 if (!p2p->in_listen || !p2p->drv_in_listen) {
2005 /* not in Listen state - ignore Probe Request */
Dmitry Shmidt7f93d6f2014-02-21 11:22:49 -08002006 p2p_dbg(p2p, "Not in Listen state (in_listen=%d drv_in_listen=%d) - ignore Probe Request",
2007 p2p->in_listen, p2p->drv_in_listen);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002008 return P2P_PREQ_NOT_LISTEN;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002009 }
2010
2011 if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
2012 ParseFailed) {
2013 /* Ignore invalid Probe Request frames */
Dmitry Shmidtec58b162014-02-19 12:44:18 -08002014 p2p_dbg(p2p, "Could not parse Probe Request frame - ignore it");
Dmitry Shmidt04949592012-07-19 12:16:46 -07002015 return P2P_PREQ_MALFORMED;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002016 }
2017
2018 if (elems.p2p == NULL) {
2019 /* not a P2P probe - ignore it */
Dmitry Shmidtec58b162014-02-19 12:44:18 -08002020 p2p_dbg(p2p, "Not a P2P probe - ignore it");
Dmitry Shmidt04949592012-07-19 12:16:46 -07002021 return P2P_PREQ_NOT_P2P;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002022 }
2023
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002024 if (dst && !is_broadcast_ether_addr(dst) &&
2025 os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2026 /* Not sent to the broadcast address or our P2P Device Address
2027 */
Dmitry Shmidtec58b162014-02-19 12:44:18 -08002028 p2p_dbg(p2p, "Probe Req DA " MACSTR " not ours - ignore it",
2029 MAC2STR(dst));
Dmitry Shmidt04949592012-07-19 12:16:46 -07002030 return P2P_PREQ_NOT_PROCESSED;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002031 }
2032
2033 if (bssid && !is_broadcast_ether_addr(bssid)) {
2034 /* Not sent to the Wildcard BSSID */
Dmitry Shmidtec58b162014-02-19 12:44:18 -08002035 p2p_dbg(p2p, "Probe Req BSSID " MACSTR " not wildcard - ignore it",
2036 MAC2STR(bssid));
Dmitry Shmidt04949592012-07-19 12:16:46 -07002037 return P2P_PREQ_NOT_PROCESSED;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002038 }
2039
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002040 if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2041 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2042 0) {
2043 /* not using P2P Wildcard SSID - ignore */
Dmitry Shmidtec58b162014-02-19 12:44:18 -08002044 p2p_dbg(p2p, "Probe Req not using P2P Wildcard SSID - ignore it");
Dmitry Shmidt04949592012-07-19 12:16:46 -07002045 return P2P_PREQ_NOT_PROCESSED;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002046 }
2047
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002048 if (supp_rates_11b_only(&elems)) {
2049 /* Indicates support for 11b rates only */
Dmitry Shmidtec58b162014-02-19 12:44:18 -08002050 p2p_dbg(p2p, "Probe Req with 11b rates only supported - ignore it");
Dmitry Shmidt04949592012-07-19 12:16:46 -07002051 return P2P_PREQ_NOT_P2P;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002052 }
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002053
2054 os_memset(&msg, 0, sizeof(msg));
2055 if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2056 /* Could not parse P2P attributes */
Dmitry Shmidtec58b162014-02-19 12:44:18 -08002057 p2p_dbg(p2p, "Could not parse P2P attributes in Probe Req - ignore it");
Dmitry Shmidt04949592012-07-19 12:16:46 -07002058 return P2P_PREQ_NOT_P2P;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002059 }
2060
2061 if (msg.device_id &&
Dmitry Shmidt04949592012-07-19 12:16:46 -07002062 os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002063 /* Device ID did not match */
Dmitry Shmidtec58b162014-02-19 12:44:18 -08002064 p2p_dbg(p2p, "Probe Req requested Device ID " MACSTR " did not match - ignore it",
2065 MAC2STR(msg.device_id));
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002066 p2p_parse_free(&msg);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002067 return P2P_PREQ_NOT_PROCESSED;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002068 }
2069
2070 /* Check Requested Device Type match */
2071 if (msg.wps_attributes &&
2072 !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2073 /* No match with Requested Device Type */
Dmitry Shmidtec58b162014-02-19 12:44:18 -08002074 p2p_dbg(p2p, "Probe Req requestred Device Type did not match - ignore it");
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002075 p2p_parse_free(&msg);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002076 return P2P_PREQ_NOT_PROCESSED;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002077 }
2078 p2p_parse_free(&msg);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002079
Dmitry Shmidt04949592012-07-19 12:16:46 -07002080 if (!p2p->cfg->send_probe_resp) {
2081 /* Response generated elsewhere */
Dmitry Shmidtec58b162014-02-19 12:44:18 -08002082 p2p_dbg(p2p, "Probe Resp generated elsewhere - do not generate additional response");
Dmitry Shmidt04949592012-07-19 12:16:46 -07002083 return P2P_PREQ_NOT_PROCESSED;
2084 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002085
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002086 p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002087
2088 /*
2089 * We do not really have a specific BSS that this frame is advertising,
2090 * so build a frame that has some information in valid format. This is
2091 * really only used for discovery purposes, not to learn exact BSS
2092 * parameters.
2093 */
2094 ies = p2p_build_probe_resp_ies(p2p);
2095 if (ies == NULL)
Dmitry Shmidt04949592012-07-19 12:16:46 -07002096 return P2P_PREQ_NOT_PROCESSED;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002097
2098 buf = wpabuf_alloc(200 + wpabuf_len(ies));
2099 if (buf == NULL) {
2100 wpabuf_free(ies);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002101 return P2P_PREQ_NOT_PROCESSED;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002102 }
2103
2104 resp = NULL;
2105 resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
2106
2107 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2108 (WLAN_FC_STYPE_PROBE_RESP << 4));
2109 os_memcpy(resp->da, addr, ETH_ALEN);
2110 os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2111 os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2112 resp->u.probe_resp.beacon_int = host_to_le16(100);
2113 /* hardware or low-level driver will setup seq_ctrl and timestamp */
2114 resp->u.probe_resp.capab_info =
2115 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2116 WLAN_CAPABILITY_PRIVACY |
2117 WLAN_CAPABILITY_SHORT_SLOT_TIME);
2118
2119 wpabuf_put_u8(buf, WLAN_EID_SSID);
2120 wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2121 wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2122
2123 wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2124 wpabuf_put_u8(buf, 8);
2125 wpabuf_put_u8(buf, (60 / 5) | 0x80);
2126 wpabuf_put_u8(buf, 90 / 5);
2127 wpabuf_put_u8(buf, (120 / 5) | 0x80);
2128 wpabuf_put_u8(buf, 180 / 5);
2129 wpabuf_put_u8(buf, (240 / 5) | 0x80);
2130 wpabuf_put_u8(buf, 360 / 5);
2131 wpabuf_put_u8(buf, 480 / 5);
2132 wpabuf_put_u8(buf, 540 / 5);
2133
2134 wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2135 wpabuf_put_u8(buf, 1);
2136 wpabuf_put_u8(buf, p2p->cfg->channel);
2137
2138 wpabuf_put_buf(buf, ies);
2139 wpabuf_free(ies);
2140
2141 p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
2142
2143 wpabuf_free(buf);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002144
2145 return P2P_PREQ_NOT_PROCESSED;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002146}
2147
2148
Dmitry Shmidt04949592012-07-19 12:16:46 -07002149enum p2p_probe_req_status
2150p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2151 const u8 *bssid, const u8 *ie, size_t ie_len)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002152{
Dmitry Shmidt04949592012-07-19 12:16:46 -07002153 enum p2p_probe_req_status res;
2154
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002155 p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2156
Dmitry Shmidt04949592012-07-19 12:16:46 -07002157 res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002158
2159 if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2160 p2p->go_neg_peer &&
2161 os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
Dmitry Shmidt9cdf1b92013-02-27 12:58:50 -08002162 == 0 &&
2163 !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002164 /* Received a Probe Request from GO Negotiation peer */
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002165 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
Dmitry Shmidt9cdf1b92013-02-27 12:58:50 -08002166 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002167 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002168 return P2P_PREQ_PROCESSED;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002169 }
2170
2171 if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2172 p2p->invite_peer &&
Dmitry Shmidt3c479372014-02-04 10:50:36 -08002173 (p2p->invite_peer->flags & P2P_DEV_WAIT_INV_REQ_ACK) &&
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002174 os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2175 == 0) {
2176 /* Received a Probe Request from Invite peer */
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002177 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
Dmitry Shmidt7f93d6f2014-02-21 11:22:49 -08002178 eloop_cancel_timeout(p2p_invite_start, p2p, NULL);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002179 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002180 return P2P_PREQ_PROCESSED;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002181 }
2182
Dmitry Shmidt04949592012-07-19 12:16:46 -07002183 return res;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002184}
2185
2186
2187static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2188 u8 *buf, size_t len, struct wpabuf *p2p_ie)
2189{
2190 struct wpabuf *tmp;
2191 u8 *lpos;
2192 size_t tmplen;
2193 int res;
2194 u8 group_capab;
2195
2196 if (p2p_ie == NULL)
2197 return 0; /* WLAN AP is not a P2P manager */
2198
2199 /*
2200 * (Re)Association Request - P2P IE
2201 * P2P Capability attribute (shall be present)
2202 * P2P Interface attribute (present if concurrent device and
2203 * P2P Management is enabled)
2204 */
2205 tmp = wpabuf_alloc(200);
2206 if (tmp == NULL)
2207 return -1;
2208
2209 lpos = p2p_buf_add_ie_hdr(tmp);
2210 group_capab = 0;
2211 if (p2p->num_groups > 0) {
2212 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2213 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2214 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2215 p2p->cross_connect)
2216 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2217 }
2218 p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2219 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2220 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2221 p2p_buf_add_p2p_interface(tmp, p2p);
2222 p2p_buf_update_ie_hdr(tmp, lpos);
2223
2224 tmplen = wpabuf_len(tmp);
2225 if (tmplen > len)
2226 res = -1;
2227 else {
2228 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2229 res = tmplen;
2230 }
2231 wpabuf_free(tmp);
2232
2233 return res;
2234}
2235
2236
2237int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2238 size_t len, int p2p_group, struct wpabuf *p2p_ie)
2239{
2240 struct wpabuf *tmp;
2241 u8 *lpos;
2242 struct p2p_device *peer;
2243 size_t tmplen;
2244 int res;
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002245 size_t extra = 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002246
2247 if (!p2p_group)
2248 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2249
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002250#ifdef CONFIG_WIFI_DISPLAY
2251 if (p2p->wfd_ie_assoc_req)
2252 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2253#endif /* CONFIG_WIFI_DISPLAY */
2254
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002255 /*
2256 * (Re)Association Request - P2P IE
2257 * P2P Capability attribute (shall be present)
2258 * Extended Listen Timing (may be present)
2259 * P2P Device Info attribute (shall be present)
2260 */
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002261 tmp = wpabuf_alloc(200 + extra);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002262 if (tmp == NULL)
2263 return -1;
2264
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002265#ifdef CONFIG_WIFI_DISPLAY
2266 if (p2p->wfd_ie_assoc_req)
2267 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2268#endif /* CONFIG_WIFI_DISPLAY */
2269
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002270 peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2271
2272 lpos = p2p_buf_add_ie_hdr(tmp);
2273 p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2274 if (p2p->ext_listen_interval)
2275 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2276 p2p->ext_listen_interval);
2277 p2p_buf_add_device_info(tmp, p2p, peer);
2278 p2p_buf_update_ie_hdr(tmp, lpos);
2279
2280 tmplen = wpabuf_len(tmp);
2281 if (tmplen > len)
2282 res = -1;
2283 else {
2284 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2285 res = tmplen;
2286 }
2287 wpabuf_free(tmp);
2288
2289 return res;
2290}
2291
2292
2293int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2294{
2295 struct wpabuf *p2p_ie;
2296 int ret;
2297
2298 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2299 if (p2p_ie == NULL)
2300 return 0;
2301
2302 ret = p2p_attr_text(p2p_ie, buf, end);
2303 wpabuf_free(p2p_ie);
2304 return ret;
2305}
2306
2307
Dmitry Shmidt04949592012-07-19 12:16:46 -07002308int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2309{
2310 struct p2p_message msg;
2311
2312 os_memset(&msg, 0, sizeof(msg));
2313 if (p2p_parse_p2p_ie(p2p_ie, &msg))
2314 return -1;
2315
2316 if (msg.p2p_device_addr) {
2317 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2318 return 0;
2319 } else if (msg.device_id) {
2320 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2321 return 0;
2322 }
2323 return -1;
2324}
2325
2326
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08002327int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2328{
2329 struct wpabuf *p2p_ie;
Dmitry Shmidt04949592012-07-19 12:16:46 -07002330 int ret;
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08002331
2332 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2333 P2P_IE_VENDOR_TYPE);
2334 if (p2p_ie == NULL)
2335 return -1;
Dmitry Shmidt04949592012-07-19 12:16:46 -07002336 ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08002337 wpabuf_free(p2p_ie);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002338 return ret;
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08002339}
2340
2341
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002342static void p2p_clear_go_neg(struct p2p_data *p2p)
2343{
2344 p2p->go_neg_peer = NULL;
2345 p2p_clear_timeout(p2p);
2346 p2p_set_state(p2p, P2P_IDLE);
2347}
2348
2349
2350void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2351{
2352 if (p2p->go_neg_peer == NULL) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002353 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002354 return; /* No pending Group Formation */
2355 }
2356
2357 if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2358 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002359 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2360 MACSTR " (GO Negotiation peer " MACSTR ")",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002361 MAC2STR(mac_addr),
2362 MAC2STR(p2p->go_neg_peer->intended_addr));
2363 return; /* Ignore unexpected peer address */
2364 }
2365
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002366 p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002367 MAC2STR(mac_addr));
2368
2369 p2p_clear_go_neg(p2p);
2370}
2371
2372
2373void p2p_group_formation_failed(struct p2p_data *p2p)
2374{
2375 if (p2p->go_neg_peer == NULL) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002376 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002377 return; /* No pending Group Formation */
2378 }
2379
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002380 p2p_dbg(p2p, "Group Formation failed with " MACSTR,
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002381 MAC2STR(p2p->go_neg_peer->intended_addr));
2382
2383 p2p_clear_go_neg(p2p);
2384}
2385
2386
2387struct p2p_data * p2p_init(const struct p2p_config *cfg)
2388{
2389 struct p2p_data *p2p;
2390
2391 if (cfg->max_peers < 1)
2392 return NULL;
2393
2394 p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2395 if (p2p == NULL)
2396 return NULL;
2397 p2p->cfg = (struct p2p_config *) (p2p + 1);
2398 os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2399 if (cfg->dev_name)
2400 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2401 if (cfg->manufacturer)
2402 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2403 if (cfg->model_name)
2404 p2p->cfg->model_name = os_strdup(cfg->model_name);
2405 if (cfg->model_number)
2406 p2p->cfg->model_number = os_strdup(cfg->model_number);
2407 if (cfg->serial_number)
2408 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002409 if (cfg->pref_chan) {
2410 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2411 sizeof(struct p2p_channel));
2412 if (p2p->cfg->pref_chan) {
2413 os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2414 cfg->num_pref_chan *
2415 sizeof(struct p2p_channel));
2416 } else
2417 p2p->cfg->num_pref_chan = 0;
2418 }
2419
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002420 p2p->min_disc_int = 1;
2421 p2p->max_disc_int = 3;
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08002422 p2p->max_disc_tu = -1;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002423
2424 os_get_random(&p2p->next_tie_breaker, 1);
2425 p2p->next_tie_breaker &= 0x01;
2426 if (cfg->sd_request)
2427 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2428 p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2429 if (cfg->concurrent_operations)
2430 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2431 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2432
2433 dl_list_init(&p2p->devices);
2434
2435 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2436 p2p_expiration_timeout, p2p, NULL);
2437
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002438 p2p->go_timeout = 100;
2439 p2p->client_timeout = 20;
Dmitry Shmidt13ca8d82014-02-20 10:18:40 -08002440 p2p->num_p2p_sd_queries = 0;
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002441
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07002442 p2p_dbg(p2p, "initialized");
2443 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2444 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2445
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002446 return p2p;
2447}
2448
2449
2450void p2p_deinit(struct p2p_data *p2p)
2451{
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002452#ifdef CONFIG_WIFI_DISPLAY
2453 wpabuf_free(p2p->wfd_ie_beacon);
2454 wpabuf_free(p2p->wfd_ie_probe_req);
2455 wpabuf_free(p2p->wfd_ie_probe_resp);
2456 wpabuf_free(p2p->wfd_ie_assoc_req);
2457 wpabuf_free(p2p->wfd_ie_invitation);
2458 wpabuf_free(p2p->wfd_ie_prov_disc_req);
2459 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2460 wpabuf_free(p2p->wfd_ie_go_neg);
2461 wpabuf_free(p2p->wfd_dev_info);
2462 wpabuf_free(p2p->wfd_assoc_bssid);
2463 wpabuf_free(p2p->wfd_coupled_sink_info);
2464#endif /* CONFIG_WIFI_DISPLAY */
2465
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002466 eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2467 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2468 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
Dmitry Shmidt9cdf1b92013-02-27 12:58:50 -08002469 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002470 p2p_flush(p2p);
2471 p2p_free_req_dev_types(p2p);
2472 os_free(p2p->cfg->dev_name);
2473 os_free(p2p->cfg->manufacturer);
2474 os_free(p2p->cfg->model_name);
2475 os_free(p2p->cfg->model_number);
2476 os_free(p2p->cfg->serial_number);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002477 os_free(p2p->cfg->pref_chan);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002478 os_free(p2p->groups);
2479 wpabuf_free(p2p->sd_resp);
2480 os_free(p2p->after_scan_tx);
2481 p2p_remove_wps_vendor_extensions(p2p);
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07002482 os_free(p2p->no_go_freq.range);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002483 os_free(p2p);
2484}
2485
2486
2487void p2p_flush(struct p2p_data *p2p)
2488{
2489 struct p2p_device *dev, *prev;
Dmitry Shmidt04949592012-07-19 12:16:46 -07002490 p2p_stop_find(p2p);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002491 dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2492 list) {
2493 dl_list_del(&dev->list);
2494 p2p_device_free(p2p, dev);
2495 }
2496 p2p_free_sd_queries(p2p);
2497 os_free(p2p->after_scan_tx);
2498 p2p->after_scan_tx = NULL;
2499}
2500
2501
2502int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2503{
2504 struct p2p_device *dev;
2505
2506 dev = p2p_get_device(p2p, addr);
2507 if (dev == NULL)
2508 return -1;
2509
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002510 p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002511
2512 if (p2p->go_neg_peer == dev)
2513 p2p->go_neg_peer = NULL;
2514
2515 dev->wps_method = WPS_NOT_READY;
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08002516 dev->oob_pw_id = 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002517 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2518 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2519
2520 /* Check if after_scan_tx is for this peer. If so free it */
2521 if (p2p->after_scan_tx &&
2522 os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2523 os_free(p2p->after_scan_tx);
2524 p2p->after_scan_tx = NULL;
2525 }
2526
2527 return 0;
2528}
2529
2530
2531int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2532{
2533 os_free(p2p->cfg->dev_name);
2534 if (dev_name) {
2535 p2p->cfg->dev_name = os_strdup(dev_name);
2536 if (p2p->cfg->dev_name == NULL)
2537 return -1;
2538 } else
2539 p2p->cfg->dev_name = NULL;
2540 return 0;
2541}
2542
2543
2544int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
2545{
2546 os_free(p2p->cfg->manufacturer);
2547 p2p->cfg->manufacturer = NULL;
2548 if (manufacturer) {
2549 p2p->cfg->manufacturer = os_strdup(manufacturer);
2550 if (p2p->cfg->manufacturer == NULL)
2551 return -1;
2552 }
2553
2554 return 0;
2555}
2556
2557
2558int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
2559{
2560 os_free(p2p->cfg->model_name);
2561 p2p->cfg->model_name = NULL;
2562 if (model_name) {
2563 p2p->cfg->model_name = os_strdup(model_name);
2564 if (p2p->cfg->model_name == NULL)
2565 return -1;
2566 }
2567
2568 return 0;
2569}
2570
2571
2572int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
2573{
2574 os_free(p2p->cfg->model_number);
2575 p2p->cfg->model_number = NULL;
2576 if (model_number) {
2577 p2p->cfg->model_number = os_strdup(model_number);
2578 if (p2p->cfg->model_number == NULL)
2579 return -1;
2580 }
2581
2582 return 0;
2583}
2584
2585
2586int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
2587{
2588 os_free(p2p->cfg->serial_number);
2589 p2p->cfg->serial_number = NULL;
2590 if (serial_number) {
2591 p2p->cfg->serial_number = os_strdup(serial_number);
2592 if (p2p->cfg->serial_number == NULL)
2593 return -1;
2594 }
2595
2596 return 0;
2597}
2598
2599
2600void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
2601{
2602 p2p->cfg->config_methods = config_methods;
2603}
2604
2605
2606void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
2607{
2608 os_memcpy(p2p->cfg->uuid, uuid, 16);
2609}
2610
2611
2612int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
2613{
2614 os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
2615 return 0;
2616}
2617
2618
2619int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
2620 size_t num_dev_types)
2621{
2622 if (num_dev_types > P2P_SEC_DEVICE_TYPES)
2623 num_dev_types = P2P_SEC_DEVICE_TYPES;
2624 p2p->cfg->num_sec_dev_types = num_dev_types;
2625 os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
2626 return 0;
2627}
2628
2629
2630void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
2631{
2632 int i;
2633
2634 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2635 wpabuf_free(p2p->wps_vendor_ext[i]);
2636 p2p->wps_vendor_ext[i] = NULL;
2637 }
2638}
2639
2640
2641int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2642 const struct wpabuf *vendor_ext)
2643{
2644 int i;
2645
2646 if (vendor_ext == NULL)
2647 return -1;
2648
2649 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2650 if (p2p->wps_vendor_ext[i] == NULL)
2651 break;
2652 }
2653 if (i >= P2P_MAX_WPS_VENDOR_EXT)
2654 return -1;
2655
2656 p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
2657 if (p2p->wps_vendor_ext[i] == NULL)
2658 return -1;
2659
2660 return 0;
2661}
2662
2663
2664int p2p_set_country(struct p2p_data *p2p, const char *country)
2665{
2666 os_memcpy(p2p->cfg->country, country, 3);
2667 return 0;
2668}
2669
2670
2671void p2p_continue_find(struct p2p_data *p2p)
2672{
2673 struct p2p_device *dev;
2674 p2p_set_state(p2p, P2P_SEARCH);
2675 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
Dmitry Shmidt13ca8d82014-02-20 10:18:40 -08002676 if (dev->sd_pending_bcast_queries == 0) {
2677 /* Initialize with total number of registered broadcast
2678 * SD queries. */
2679 dev->sd_pending_bcast_queries = p2p->num_p2p_sd_queries;
2680 }
2681
2682 if (p2p_start_sd(p2p, dev) == 0)
2683 return;
2684 if (dev->req_config_methods &&
2685 !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002686 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002687 MACSTR " (config methods 0x%x)",
2688 MAC2STR(dev->info.p2p_device_addr),
2689 dev->req_config_methods);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002690 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002691 return;
2692 }
2693 }
2694
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08002695 p2p_listen_in_find(p2p, 1);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002696}
2697
2698
2699static void p2p_sd_cb(struct p2p_data *p2p, int success)
2700{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002701 p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002702 success);
2703 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2704
2705 if (!success) {
Dmitry Shmidt13ca8d82014-02-20 10:18:40 -08002706 p2p->sd_peer = NULL;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002707 p2p_continue_find(p2p);
2708 return;
2709 }
2710
2711 if (p2p->sd_peer == NULL) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002712 p2p_dbg(p2p, "No SD peer entry known");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002713 p2p_continue_find(p2p);
2714 return;
2715 }
2716
2717 /* Wait for response from the peer */
2718 p2p_set_state(p2p, P2P_SD_DURING_FIND);
2719 p2p_set_timeout(p2p, 0, 200000);
2720}
2721
Jouni Malinen75ecf522011-06-27 15:19:46 -07002722
2723/**
2724 * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
2725 * @p2p: P2P module context from p2p_init()
2726 */
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002727static void p2p_retry_pd(struct p2p_data *p2p)
Jouni Malinen75ecf522011-06-27 15:19:46 -07002728{
2729 struct p2p_device *dev;
2730
2731 if (p2p->state != P2P_IDLE)
2732 return;
2733
2734 /*
2735 * Retry the prov disc req attempt only for the peer that the user had
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08002736 * requested.
Jouni Malinen75ecf522011-06-27 15:19:46 -07002737 */
2738
2739 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2740 if (os_memcmp(p2p->pending_pd_devaddr,
2741 dev->info.p2p_device_addr, ETH_ALEN) != 0)
2742 continue;
2743 if (!dev->req_config_methods)
2744 continue;
Jouni Malinen75ecf522011-06-27 15:19:46 -07002745
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002746 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
Jouni Malinen75ecf522011-06-27 15:19:46 -07002747 MACSTR " (config methods 0x%x)",
2748 MAC2STR(dev->info.p2p_device_addr),
2749 dev->req_config_methods);
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08002750 p2p_send_prov_disc_req(p2p, dev,
Dmitry Shmidt051af732013-10-22 13:52:46 -07002751 dev->flags & P2P_DEV_PD_FOR_JOIN,
2752 p2p->pd_force_freq);
Jouni Malinen75ecf522011-06-27 15:19:46 -07002753 return;
2754 }
2755}
2756
2757
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002758static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
2759{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002760 p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002761 success);
Jouni Malinen75ecf522011-06-27 15:19:46 -07002762
2763 /*
2764 * Postpone resetting the pending action state till after we actually
2765 * time out. This allows us to take some action like notifying any
2766 * interested parties about no response to the request.
2767 *
2768 * When the timer (below) goes off we check in IDLE, SEARCH, or
2769 * LISTEN_ONLY state, which are the only allowed states to issue a PD
2770 * requests in, if this was still pending and then raise notification.
2771 */
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002772
2773 if (!success) {
Jouni Malinen75ecf522011-06-27 15:19:46 -07002774 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2775
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002776 if (p2p->user_initiated_pd &&
2777 (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
2778 {
2779 /* Retry request from timeout to avoid busy loops */
2780 p2p->pending_action_state = P2P_PENDING_PD;
2781 p2p_set_timeout(p2p, 0, 50000);
2782 } else if (p2p->state != P2P_IDLE)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002783 p2p_continue_find(p2p);
Jouni Malinen75ecf522011-06-27 15:19:46 -07002784 else if (p2p->user_initiated_pd) {
2785 p2p->pending_action_state = P2P_PENDING_PD;
2786 p2p_set_timeout(p2p, 0, 300000);
2787 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002788 return;
2789 }
2790
Jouni Malinen75ecf522011-06-27 15:19:46 -07002791 /*
2792 * This postponing, of resetting pending_action_state, needs to be
2793 * done only for user initiated PD requests and not internal ones.
2794 */
2795 if (p2p->user_initiated_pd)
2796 p2p->pending_action_state = P2P_PENDING_PD;
2797 else
2798 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2799
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002800 /* Wait for response from the peer */
2801 if (p2p->state == P2P_SEARCH)
2802 p2p_set_state(p2p, P2P_PD_DURING_FIND);
2803 p2p_set_timeout(p2p, 0, 200000);
2804}
2805
2806
2807int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002808 struct os_reltime *rx_time, int level, const u8 *ies,
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08002809 size_t ies_len)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002810{
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002811 if (os_reltime_before(rx_time, &p2p->find_start)) {
Dmitry Shmidtf8623282013-02-20 14:34:59 -08002812 /*
2813 * The driver may have cached (e.g., in cfg80211 BSS table) the
2814 * scan results for relatively long time. To avoid reporting
2815 * stale information, update P2P peers only based on results
2816 * that have based on frames received after the last p2p_find
2817 * operation was started.
2818 */
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002819 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
2820 " (rx_time=%u.%06u)",
Dmitry Shmidtf8623282013-02-20 14:34:59 -08002821 MAC2STR(bssid), (unsigned int) rx_time->sec,
2822 (unsigned int) rx_time->usec);
2823 return 0;
2824 }
2825
2826 p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002827
2828 return 0;
2829}
2830
2831
2832void p2p_scan_res_handled(struct p2p_data *p2p)
2833{
2834 if (!p2p->p2p_scan_running) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002835 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002836 }
2837 p2p->p2p_scan_running = 0;
2838 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2839
2840 if (p2p_run_after_scan(p2p))
2841 return;
2842 if (p2p->state == P2P_SEARCH)
2843 p2p_continue_find(p2p);
2844}
2845
2846
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08002847void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002848{
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002849 u8 *len;
2850
2851#ifdef CONFIG_WIFI_DISPLAY
2852 if (p2p->wfd_ie_probe_req)
2853 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
2854#endif /* CONFIG_WIFI_DISPLAY */
2855
2856 len = p2p_buf_add_ie_hdr(ies);
Dmitry Shmidt04949592012-07-19 12:16:46 -07002857 p2p_buf_add_capability(ies, p2p->dev_capab &
2858 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08002859 if (dev_id)
2860 p2p_buf_add_device_id(ies, dev_id);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002861 if (p2p->cfg->reg_class && p2p->cfg->channel)
2862 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
2863 p2p->cfg->reg_class,
2864 p2p->cfg->channel);
2865 if (p2p->ext_listen_interval)
2866 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
2867 p2p->ext_listen_interval);
2868 /* TODO: p2p_buf_add_operating_channel() if GO */
2869 p2p_buf_update_ie_hdr(ies, len);
2870}
2871
2872
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002873size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
2874{
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002875 size_t len = 100;
2876
2877#ifdef CONFIG_WIFI_DISPLAY
2878 if (p2p && p2p->wfd_ie_probe_req)
2879 len += wpabuf_len(p2p->wfd_ie_probe_req);
2880#endif /* CONFIG_WIFI_DISPLAY */
2881
2882 return len;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002883}
2884
2885
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002886int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
2887{
2888 return p2p_attr_text(p2p_ie, buf, end);
2889}
2890
2891
2892static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
2893{
2894 struct p2p_device *dev = p2p->go_neg_peer;
Dmitry Shmidt8c652892013-03-01 10:14:01 -08002895 int timeout;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002896
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002897 p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002898
2899 if (dev == NULL) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002900 p2p_dbg(p2p, "No pending GO Negotiation");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002901 return;
2902 }
2903
2904 if (success) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002905 if (dev->flags & P2P_DEV_USER_REJECTED) {
2906 p2p_set_state(p2p, P2P_IDLE);
2907 return;
2908 }
Dmitry Shmidt04949592012-07-19 12:16:46 -07002909 } else if (dev->go_neg_req_sent) {
2910 /* Cancel the increment from p2p_connect_send() on failure */
Dmitry Shmidt98f9e762012-05-30 11:18:46 -07002911 dev->go_neg_req_sent--;
2912 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002913
2914 if (!success &&
2915 (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
2916 !is_zero_ether_addr(dev->member_in_go_dev)) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002917 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002918 MAC2STR(dev->info.p2p_device_addr));
2919 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2920 p2p_send_dev_disc_req(p2p, dev);
2921 return;
2922 }
2923
2924 /*
2925 * Use P2P find, if needed, to find the other device from its listen
2926 * channel.
2927 */
2928 p2p_set_state(p2p, P2P_CONNECT);
Dmitry Shmidt8c652892013-03-01 10:14:01 -08002929 timeout = success ? 500000 : 100000;
2930 if (!success && p2p->go_neg_peer &&
2931 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
2932 unsigned int r;
2933 /*
2934 * Peer is expected to wait our response and we will skip the
2935 * listen phase. Add some randomness to the wait time here to
2936 * make it less likely to hit cases where we could end up in
2937 * sync with peer not listening.
2938 */
2939 os_get_random((u8 *) &r, sizeof(r));
2940 timeout += r % 100000;
2941 }
2942 p2p_set_timeout(p2p, 0, timeout);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002943}
2944
2945
2946static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
2947{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002948 p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002949 success);
2950 if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002951 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002952 return;
2953 }
2954 p2p_set_state(p2p, P2P_CONNECT);
Dmitry Shmidt8c652892013-03-01 10:14:01 -08002955 p2p_set_timeout(p2p, 0, 500000);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002956}
2957
2958
Dmitry Shmidt4b060592013-04-29 16:42:49 -07002959static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
2960 const u8 *addr)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002961{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002962 p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002963 if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
2964 p2p_go_neg_failed(p2p, p2p->go_neg_peer,
2965 p2p->go_neg_peer->status);
Dmitry Shmidt4b060592013-04-29 16:42:49 -07002966 } else if (success) {
2967 struct p2p_device *dev;
2968 dev = p2p_get_device(p2p, addr);
2969 if (dev &&
2970 dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
2971 dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002972 }
2973}
2974
2975
2976static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
2977 enum p2p_send_action_result result)
2978{
2979 struct p2p_device *dev;
2980
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07002981 p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002982 if (result == P2P_SEND_ACTION_FAILED) {
Dmitry Shmidt413dde72014-04-11 10:23:22 -07002983 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002984 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2985 return;
2986 }
Dmitry Shmidt413dde72014-04-11 10:23:22 -07002987
2988 dev = p2p->go_neg_peer;
2989
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002990 if (result == P2P_SEND_ACTION_NO_ACK) {
2991 /*
Dmitry Shmidt413dde72014-04-11 10:23:22 -07002992 * Retry GO Negotiation Confirmation
2993 * P2P_GO_NEG_CNF_MAX_RETRY_COUNT times if we did not receive
2994 * ACK for confirmation.
2995 */
2996 if (dev && dev->go_neg_conf &&
2997 dev->go_neg_conf_sent <= P2P_GO_NEG_CNF_MAX_RETRY_COUNT) {
2998 p2p_dbg(p2p, "GO Negotiation Confirm retry %d",
2999 dev->go_neg_conf_sent);
3000 p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM;
3001 if (p2p_send_action(p2p, dev->go_neg_conf_freq,
3002 dev->info.p2p_device_addr,
3003 p2p->cfg->dev_addr,
3004 dev->info.p2p_device_addr,
3005 wpabuf_head(dev->go_neg_conf),
3006 wpabuf_len(dev->go_neg_conf), 0) >=
3007 0) {
3008 dev->go_neg_conf_sent++;
3009 return;
3010 }
3011 p2p_dbg(p2p, "Failed to re-send Action frame");
3012
3013 /*
3014 * Continue with the assumption that the first attempt
3015 * went through and just the ACK frame was lost.
3016 */
3017 }
3018
3019 /*
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003020 * It looks like the TX status for GO Negotiation Confirm is
3021 * often showing failure even when the peer has actually
3022 * received the frame. Since the peer may change channels
3023 * immediately after having received the frame, we may not see
3024 * an Ack for retries, so just dropping a single frame may
3025 * trigger this. To allow the group formation to succeed if the
3026 * peer did indeed receive the frame, continue regardless of
3027 * the TX status.
3028 */
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003029 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 -07003030 }
3031
Dmitry Shmidt413dde72014-04-11 10:23:22 -07003032 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3033
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003034 if (dev == NULL)
3035 return;
3036
3037 p2p_go_complete(p2p, dev);
3038}
3039
3040
3041void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3042 const u8 *src, const u8 *bssid,
3043 enum p2p_send_action_result result)
3044{
3045 enum p2p_pending_action_state state;
3046 int success;
3047
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003048 p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003049 " src=" MACSTR " bssid=" MACSTR " result=%d",
3050 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
3051 MAC2STR(bssid), result);
3052 success = result == P2P_SEND_ACTION_SUCCESS;
3053 state = p2p->pending_action_state;
3054 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3055 switch (state) {
3056 case P2P_NO_PENDING_ACTION:
Dmitry Shmidt4582d2a2014-02-28 11:14:23 -08003057 if (p2p->send_action_in_progress) {
3058 p2p->send_action_in_progress = 0;
3059 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3060 }
Dmitry Shmidt8da800a2013-04-24 12:57:01 -07003061 if (p2p->after_scan_tx_in_progress) {
3062 p2p->after_scan_tx_in_progress = 0;
3063 if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
3064 p2p_run_after_scan(p2p))
3065 break;
3066 if (p2p->state == P2P_SEARCH) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003067 p2p_dbg(p2p, "Continue find after after_scan_tx completion");
Dmitry Shmidt8da800a2013-04-24 12:57:01 -07003068 p2p_continue_find(p2p);
3069 }
3070 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003071 break;
3072 case P2P_PENDING_GO_NEG_REQUEST:
3073 p2p_go_neg_req_cb(p2p, success);
3074 break;
3075 case P2P_PENDING_GO_NEG_RESPONSE:
3076 p2p_go_neg_resp_cb(p2p, success);
3077 break;
3078 case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
Dmitry Shmidt4b060592013-04-29 16:42:49 -07003079 p2p_go_neg_resp_failure_cb(p2p, success, dst);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003080 break;
3081 case P2P_PENDING_GO_NEG_CONFIRM:
3082 p2p_go_neg_conf_cb(p2p, result);
3083 break;
3084 case P2P_PENDING_SD:
3085 p2p_sd_cb(p2p, success);
3086 break;
3087 case P2P_PENDING_PD:
3088 p2p_prov_disc_cb(p2p, success);
3089 break;
3090 case P2P_PENDING_INVITATION_REQUEST:
3091 p2p_invitation_req_cb(p2p, success);
3092 break;
3093 case P2P_PENDING_INVITATION_RESPONSE:
3094 p2p_invitation_resp_cb(p2p, success);
3095 break;
3096 case P2P_PENDING_DEV_DISC_REQUEST:
3097 p2p_dev_disc_req_cb(p2p, success);
3098 break;
3099 case P2P_PENDING_DEV_DISC_RESPONSE:
3100 p2p_dev_disc_resp_cb(p2p, success);
3101 break;
3102 case P2P_PENDING_GO_DISC_REQ:
3103 p2p_go_disc_req_cb(p2p, success);
3104 break;
3105 }
Dmitry Shmidt8da800a2013-04-24 12:57:01 -07003106
3107 p2p->after_scan_tx_in_progress = 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003108}
3109
3110
3111void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3112 unsigned int duration)
3113{
3114 if (freq == p2p->pending_client_disc_freq) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003115 p2p_dbg(p2p, "Client discoverability remain-awake completed");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003116 p2p->pending_client_disc_freq = 0;
3117 return;
3118 }
3119
3120 if (freq != p2p->pending_listen_freq) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003121 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003122 freq, duration, p2p->pending_listen_freq);
3123 return;
3124 }
3125
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003126 p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003127 p2p->pending_listen_sec, p2p->pending_listen_usec,
3128 p2p->pending_listen_freq);
3129 p2p->in_listen = 1;
3130 p2p->drv_in_listen = freq;
3131 if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3132 /*
3133 * Add 20 msec extra wait to avoid race condition with driver
3134 * remain-on-channel end event, i.e., give driver more time to
3135 * complete the operation before our timeout expires.
3136 */
3137 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3138 p2p->pending_listen_usec + 20000);
3139 }
3140
3141 p2p->pending_listen_freq = 0;
3142}
3143
3144
3145int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3146{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003147 p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003148 p2p->drv_in_listen = 0;
3149 if (p2p->in_listen)
3150 return 0; /* Internal timeout will trigger the next step */
3151
3152 if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3153 if (p2p->go_neg_peer->connect_reqs >= 120) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003154 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003155 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3156 return 0;
3157 }
3158
3159 p2p_set_state(p2p, P2P_CONNECT);
3160 p2p_connect_send(p2p, p2p->go_neg_peer);
3161 return 1;
3162 } else if (p2p->state == P2P_SEARCH) {
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08003163 if (p2p->p2p_scan_running) {
3164 /*
3165 * Search is already in progress. This can happen if
3166 * an Action frame RX is reported immediately after
3167 * the end of a remain-on-channel operation and the
3168 * response frame to that is sent using an offchannel
3169 * operation while in p2p_find. Avoid an attempt to
3170 * restart a scan here.
3171 */
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003172 p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08003173 return 1;
3174 }
Dmitry Shmidt04949592012-07-19 12:16:46 -07003175 if (p2p->pending_listen_freq) {
3176 /*
3177 * Better wait a bit if the driver is unable to start
3178 * offchannel operation for some reason. p2p_search()
3179 * will be started from internal timeout.
3180 */
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003181 p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
Dmitry Shmidt04949592012-07-19 12:16:46 -07003182 p2p_set_timeout(p2p, 0, 100000);
3183 return 1;
3184 }
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07003185 if (p2p->search_delay) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003186 p2p_dbg(p2p, "Delay search operation by %u ms",
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07003187 p2p->search_delay);
3188 p2p_set_timeout(p2p, p2p->search_delay / 1000,
3189 (p2p->search_delay % 1000) * 1000);
3190 return 1;
3191 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003192 p2p_search(p2p);
3193 return 1;
3194 }
3195
3196 return 0;
3197}
3198
3199
3200static void p2p_timeout_connect(struct p2p_data *p2p)
3201{
3202 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
Dmitry Shmidt04949592012-07-19 12:16:46 -07003203 if (p2p->go_neg_peer &&
3204 (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003205 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
Dmitry Shmidt04949592012-07-19 12:16:46 -07003206 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3207 return;
3208 }
Dmitry Shmidt8c652892013-03-01 10:14:01 -08003209 if (p2p->go_neg_peer &&
3210 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3211 p2p->go_neg_peer->connect_reqs < 120) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003212 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
Dmitry Shmidt8c652892013-03-01 10:14:01 -08003213 p2p_connect_send(p2p, p2p->go_neg_peer);
3214 return;
3215 }
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08003216 if (p2p->go_neg_peer && p2p->go_neg_peer->oob_go_neg_freq > 0) {
3217 p2p_dbg(p2p, "Skip connect-listen since GO Neg channel known (OOB)");
3218 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3219 p2p_set_timeout(p2p, 0, 30000);
3220 return;
3221 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003222 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08003223 p2p_listen_in_find(p2p, 0);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003224}
3225
3226
3227static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3228{
3229 if (p2p->go_neg_peer) {
3230 if (p2p->drv_in_listen) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003231 p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003232 return;
3233 }
3234
3235 if (p2p->go_neg_peer->connect_reqs >= 120) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003236 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003237 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3238 return;
3239 }
3240
3241 p2p_set_state(p2p, P2P_CONNECT);
3242 p2p_connect_send(p2p, p2p->go_neg_peer);
3243 } else
3244 p2p_set_state(p2p, P2P_IDLE);
3245}
3246
3247
3248static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3249{
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003250 p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
Dmitry Shmidt18463232014-01-24 12:29:41 -08003251
3252 if (p2p->cfg->is_concurrent_session_active &&
3253 p2p->cfg->is_concurrent_session_active(p2p->cfg->cb_ctx))
3254 p2p_set_timeout(p2p, 0, 500000);
3255 else
3256 p2p_set_timeout(p2p, 0, 200000);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003257}
3258
3259
3260static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3261{
3262 struct p2p_device *dev = p2p->go_neg_peer;
Dmitry Shmidt6dc03bd2014-05-16 10:40:13 -07003263 struct os_reltime now;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003264
3265 if (dev == NULL) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003266 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003267 return;
3268 }
3269
Dmitry Shmidt6dc03bd2014-05-16 10:40:13 -07003270 os_get_reltime(&now);
3271 if (os_reltime_expired(&now, &dev->go_neg_wait_started, 120)) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003272 p2p_dbg(p2p, "Timeout on waiting peer to become ready for GO Negotiation");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003273 p2p_go_neg_failed(p2p, dev, -1);
3274 return;
3275 }
3276
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003277 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 -07003278 p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08003279 p2p_listen_in_find(p2p, 0);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003280}
3281
3282
3283static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3284{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003285 p2p_dbg(p2p, "Service Discovery Query timeout");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003286 if (p2p->sd_peer) {
3287 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003288 p2p->sd_peer = NULL;
3289 }
3290 p2p_continue_find(p2p);
3291}
3292
3293
3294static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3295{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003296 p2p_dbg(p2p, "Provision Discovery Request timeout");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003297 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3298 p2p_continue_find(p2p);
3299}
3300
3301
Jouni Malinen75ecf522011-06-27 15:19:46 -07003302static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3303{
3304 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3305
3306 /*
3307 * For user initiated PD requests that we have not gotten any responses
3308 * for while in IDLE state, we retry them a couple of times before
3309 * giving up.
3310 */
3311 if (!p2p->user_initiated_pd)
3312 return;
3313
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003314 p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
Jouni Malinen75ecf522011-06-27 15:19:46 -07003315
3316 if (p2p->pd_retries) {
3317 p2p->pd_retries--;
3318 p2p_retry_pd(p2p);
3319 } else {
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08003320 struct p2p_device *dev;
3321 int for_join = 0;
3322
3323 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3324 if (os_memcmp(p2p->pending_pd_devaddr,
3325 dev->info.p2p_device_addr, ETH_ALEN) != 0)
3326 continue;
3327 if (dev->req_config_methods &&
3328 (dev->flags & P2P_DEV_PD_FOR_JOIN))
3329 for_join = 1;
3330 }
3331
Jouni Malinen75ecf522011-06-27 15:19:46 -07003332 if (p2p->cfg->prov_disc_fail)
3333 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
3334 p2p->pending_pd_devaddr,
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08003335 for_join ?
3336 P2P_PROV_DISC_TIMEOUT_JOIN :
Jouni Malinen75ecf522011-06-27 15:19:46 -07003337 P2P_PROV_DISC_TIMEOUT);
3338 p2p_reset_pending_pd(p2p);
3339 }
3340}
3341
3342
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003343static void p2p_timeout_invite(struct p2p_data *p2p)
3344{
3345 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3346 p2p_set_state(p2p, P2P_INVITE_LISTEN);
3347 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
3348 /*
3349 * Better remain on operating channel instead of listen channel
3350 * when running a group.
3351 */
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003352 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003353 p2p_set_timeout(p2p, 0, 100000);
3354 return;
3355 }
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08003356 p2p_listen_in_find(p2p, 0);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003357}
3358
3359
3360static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3361{
3362 if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3363 p2p_set_state(p2p, P2P_INVITE);
3364 p2p_invite_send(p2p, p2p->invite_peer,
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08003365 p2p->invite_go_dev_addr, p2p->invite_dev_pw_id);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003366 } else {
3367 if (p2p->invite_peer) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003368 p2p_dbg(p2p, "Invitation Request retry limit reached");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003369 if (p2p->cfg->invitation_result)
3370 p2p->cfg->invitation_result(
Dmitry Shmidt700a1372013-03-15 14:14:44 -07003371 p2p->cfg->cb_ctx, -1, NULL, NULL,
Dmitry Shmidte0e48dc2013-11-18 12:00:06 -08003372 p2p->invite_peer->info.p2p_device_addr,
Dmitry Shmidt15907092014-03-25 10:42:57 -07003373 0, 0);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003374 }
3375 p2p_set_state(p2p, P2P_IDLE);
3376 }
3377}
3378
3379
3380static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3381{
3382 struct p2p_data *p2p = eloop_ctx;
3383
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003384 p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003385
3386 p2p->in_listen = 0;
3387
3388 switch (p2p->state) {
3389 case P2P_IDLE:
Jouni Malinen75ecf522011-06-27 15:19:46 -07003390 /* Check if we timed out waiting for PD req */
3391 if (p2p->pending_action_state == P2P_PENDING_PD)
3392 p2p_timeout_prov_disc_req(p2p);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003393 break;
3394 case P2P_SEARCH:
Jouni Malinen75ecf522011-06-27 15:19:46 -07003395 /* Check if we timed out waiting for PD req */
3396 if (p2p->pending_action_state == P2P_PENDING_PD)
3397 p2p_timeout_prov_disc_req(p2p);
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07003398 if (p2p->search_delay && !p2p->in_search_delay) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003399 p2p_dbg(p2p, "Delay search operation by %u ms",
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07003400 p2p->search_delay);
3401 p2p->in_search_delay = 1;
3402 p2p_set_timeout(p2p, p2p->search_delay / 1000,
3403 (p2p->search_delay % 1000) * 1000);
3404 break;
3405 }
3406 p2p->in_search_delay = 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003407 p2p_search(p2p);
3408 break;
3409 case P2P_CONNECT:
3410 p2p_timeout_connect(p2p);
3411 break;
3412 case P2P_CONNECT_LISTEN:
3413 p2p_timeout_connect_listen(p2p);
3414 break;
3415 case P2P_GO_NEG:
3416 break;
3417 case P2P_LISTEN_ONLY:
Jouni Malinen75ecf522011-06-27 15:19:46 -07003418 /* Check if we timed out waiting for PD req */
3419 if (p2p->pending_action_state == P2P_PENDING_PD)
3420 p2p_timeout_prov_disc_req(p2p);
3421
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003422 if (p2p->ext_listen_only) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003423 p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003424 p2p->ext_listen_only = 0;
3425 p2p_set_state(p2p, P2P_IDLE);
3426 }
3427 break;
3428 case P2P_WAIT_PEER_CONNECT:
3429 p2p_timeout_wait_peer_connect(p2p);
3430 break;
3431 case P2P_WAIT_PEER_IDLE:
3432 p2p_timeout_wait_peer_idle(p2p);
3433 break;
3434 case P2P_SD_DURING_FIND:
3435 p2p_timeout_sd_during_find(p2p);
3436 break;
3437 case P2P_PROVISIONING:
3438 break;
3439 case P2P_PD_DURING_FIND:
3440 p2p_timeout_prov_disc_during_find(p2p);
3441 break;
3442 case P2P_INVITE:
3443 p2p_timeout_invite(p2p);
3444 break;
3445 case P2P_INVITE_LISTEN:
3446 p2p_timeout_invite_listen(p2p);
3447 break;
3448 }
3449}
3450
3451
3452int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
3453{
3454 struct p2p_device *dev;
3455
3456 dev = p2p_get_device(p2p, peer_addr);
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003457 p2p_dbg(p2p, "Local request to reject connection attempts by peer "
3458 MACSTR, MAC2STR(peer_addr));
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003459 if (dev == NULL) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003460 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003461 return -1;
3462 }
3463 dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
3464 dev->flags |= P2P_DEV_USER_REJECTED;
3465 return 0;
3466}
3467
3468
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003469const char * p2p_wps_method_text(enum p2p_wps_method method)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003470{
3471 switch (method) {
3472 case WPS_NOT_READY:
3473 return "not-ready";
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003474 case WPS_PIN_DISPLAY:
3475 return "Display";
3476 case WPS_PIN_KEYPAD:
3477 return "Keypad";
3478 case WPS_PBC:
3479 return "PBC";
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08003480 case WPS_NFC:
3481 return "NFC";
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003482 }
3483
3484 return "??";
3485}
3486
3487
3488static const char * p2p_go_state_text(enum p2p_go_state go_state)
3489{
3490 switch (go_state) {
3491 case UNKNOWN_GO:
3492 return "unknown";
3493 case LOCAL_GO:
3494 return "local";
3495 case REMOTE_GO:
3496 return "remote";
3497 }
3498
3499 return "??";
3500}
3501
3502
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003503const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
3504 const u8 *addr, int next)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003505{
3506 struct p2p_device *dev;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003507
3508 if (addr)
3509 dev = p2p_get_device(p2p, addr);
3510 else
3511 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3512
3513 if (dev && next) {
3514 dev = dl_list_first(&dev->list, struct p2p_device, list);
3515 if (&dev->list == &p2p->devices)
3516 dev = NULL;
3517 }
3518
3519 if (dev == NULL)
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003520 return NULL;
3521
3522 return &dev->info;
3523}
3524
3525
3526int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
3527 char *buf, size_t buflen)
3528{
3529 struct p2p_device *dev;
3530 int res;
3531 char *pos, *end;
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08003532 struct os_reltime now;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003533
3534 if (info == NULL)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003535 return -1;
3536
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003537 dev = (struct p2p_device *) (((u8 *) info) -
3538 offsetof(struct p2p_device, info));
3539
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003540 pos = buf;
3541 end = buf + buflen;
3542
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08003543 os_get_reltime(&now);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003544 res = os_snprintf(pos, end - pos,
3545 "age=%d\n"
3546 "listen_freq=%d\n"
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003547 "wps_method=%s\n"
3548 "interface_addr=" MACSTR "\n"
3549 "member_in_go_dev=" MACSTR "\n"
3550 "member_in_go_iface=" MACSTR "\n"
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003551 "go_neg_req_sent=%d\n"
3552 "go_state=%s\n"
3553 "dialog_token=%u\n"
3554 "intended_addr=" MACSTR "\n"
3555 "country=%c%c\n"
3556 "oper_freq=%d\n"
3557 "req_config_methods=0x%x\n"
Dmitry Shmidt13ca8d82014-02-20 10:18:40 -08003558 "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003559 "status=%d\n"
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003560 "invitation_reqs=%u\n",
3561 (int) (now.sec - dev->last_seen.sec),
3562 dev->listen_freq,
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003563 p2p_wps_method_text(dev->wps_method),
3564 MAC2STR(dev->interface_addr),
3565 MAC2STR(dev->member_in_go_dev),
3566 MAC2STR(dev->member_in_go_iface),
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003567 dev->go_neg_req_sent,
3568 p2p_go_state_text(dev->go_state),
3569 dev->dialog_token,
3570 MAC2STR(dev->intended_addr),
3571 dev->country[0] ? dev->country[0] : '_',
3572 dev->country[1] ? dev->country[1] : '_',
3573 dev->oper_freq,
3574 dev->req_config_methods,
3575 dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
3576 "[PROBE_REQ_ONLY]" : "",
3577 dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
3578 dev->flags & P2P_DEV_NOT_YET_READY ?
3579 "[NOT_YET_READY]" : "",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003580 dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
3581 "[PD_PEER_DISPLAY]" : "",
3582 dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
3583 "[PD_PEER_KEYPAD]" : "",
3584 dev->flags & P2P_DEV_USER_REJECTED ?
3585 "[USER_REJECTED]" : "",
3586 dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
3587 "[PEER_WAITING_RESPONSE]" : "",
3588 dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
3589 "[PREFER_PERSISTENT_GROUP]" : "",
3590 dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
3591 "[WAIT_GO_NEG_RESPONSE]" : "",
3592 dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
3593 "[WAIT_GO_NEG_CONFIRM]" : "",
3594 dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
3595 "[GROUP_CLIENT_ONLY]" : "",
3596 dev->flags & P2P_DEV_FORCE_FREQ ?
3597 "[FORCE_FREQ]" : "",
3598 dev->flags & P2P_DEV_PD_FOR_JOIN ?
3599 "[PD_FOR_JOIN]" : "",
3600 dev->status,
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003601 dev->invitation_reqs);
3602 if (res < 0 || res >= end - pos)
3603 return pos - buf;
3604 pos += res;
3605
3606 if (dev->ext_listen_period) {
3607 res = os_snprintf(pos, end - pos,
3608 "ext_listen_period=%u\n"
3609 "ext_listen_interval=%u\n",
3610 dev->ext_listen_period,
3611 dev->ext_listen_interval);
3612 if (res < 0 || res >= end - pos)
3613 return pos - buf;
3614 pos += res;
3615 }
3616
3617 if (dev->oper_ssid_len) {
3618 res = os_snprintf(pos, end - pos,
3619 "oper_ssid=%s\n",
3620 wpa_ssid_txt(dev->oper_ssid,
3621 dev->oper_ssid_len));
3622 if (res < 0 || res >= end - pos)
3623 return pos - buf;
3624 pos += res;
3625 }
3626
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07003627#ifdef CONFIG_WIFI_DISPLAY
3628 if (dev->info.wfd_subelems) {
3629 res = os_snprintf(pos, end - pos, "wfd_subelems=");
3630 if (res < 0 || res >= end - pos)
3631 return pos - buf;
3632 pos += res;
3633
3634 pos += wpa_snprintf_hex(pos, end - pos,
3635 wpabuf_head(dev->info.wfd_subelems),
3636 wpabuf_len(dev->info.wfd_subelems));
3637
3638 res = os_snprintf(pos, end - pos, "\n");
3639 if (res < 0 || res >= end - pos)
3640 return pos - buf;
3641 pos += res;
3642 }
3643#endif /* CONFIG_WIFI_DISPLAY */
3644
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003645 return pos - buf;
3646}
3647
3648
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003649int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
3650{
3651 return p2p_get_device(p2p, addr) != NULL;
3652}
3653
3654
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003655void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
3656{
3657 if (enabled) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003658 p2p_dbg(p2p, "Client discoverability enabled");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003659 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3660 } else {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003661 p2p_dbg(p2p, "Client discoverability disabled");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003662 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3663 }
3664}
3665
3666
3667static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
3668 u32 duration2, u32 interval2)
3669{
3670 struct wpabuf *req;
3671 struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
3672 u8 *len;
3673
3674 req = wpabuf_alloc(100);
3675 if (req == NULL)
3676 return NULL;
3677
3678 if (duration1 || interval1) {
3679 os_memset(&desc1, 0, sizeof(desc1));
3680 desc1.count_type = 1;
3681 desc1.duration = duration1;
3682 desc1.interval = interval1;
3683 ptr1 = &desc1;
3684
3685 if (duration2 || interval2) {
3686 os_memset(&desc2, 0, sizeof(desc2));
3687 desc2.count_type = 2;
3688 desc2.duration = duration2;
3689 desc2.interval = interval2;
3690 ptr2 = &desc2;
3691 }
3692 }
3693
3694 p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
3695 len = p2p_buf_add_ie_hdr(req);
3696 p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
3697 p2p_buf_update_ie_hdr(req, len);
3698
3699 return req;
3700}
3701
3702
3703int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
3704 const u8 *own_interface_addr, unsigned int freq,
3705 u32 duration1, u32 interval1, u32 duration2,
3706 u32 interval2)
3707{
3708 struct wpabuf *req;
3709
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003710 p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
3711 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
3712 "dur2=%u int2=%u",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003713 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
3714 freq, duration1, interval1, duration2, interval2);
3715
3716 req = p2p_build_presence_req(duration1, interval1, duration2,
3717 interval2);
3718 if (req == NULL)
3719 return -1;
3720
3721 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3722 if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
3723 go_interface_addr,
3724 wpabuf_head(req), wpabuf_len(req), 200) < 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003725 p2p_dbg(p2p, "Failed to send Action frame");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003726 }
3727 wpabuf_free(req);
3728
3729 return 0;
3730}
3731
3732
3733static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
3734 size_t noa_len, u8 dialog_token)
3735{
3736 struct wpabuf *resp;
3737 u8 *len;
3738
3739 resp = wpabuf_alloc(100 + noa_len);
3740 if (resp == NULL)
3741 return NULL;
3742
3743 p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
3744 len = p2p_buf_add_ie_hdr(resp);
3745 p2p_buf_add_status(resp, status);
3746 if (noa) {
3747 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
3748 wpabuf_put_le16(resp, noa_len);
3749 wpabuf_put_data(resp, noa, noa_len);
3750 } else
3751 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
3752 p2p_buf_update_ie_hdr(resp, len);
3753
3754 return resp;
3755}
3756
3757
3758static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
3759 const u8 *sa, const u8 *data, size_t len,
3760 int rx_freq)
3761{
3762 struct p2p_message msg;
3763 u8 status;
3764 struct wpabuf *resp;
3765 size_t g;
3766 struct p2p_group *group = NULL;
3767 int parsed = 0;
3768 u8 noa[50];
3769 int noa_len;
3770
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003771 p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003772
3773 for (g = 0; g < p2p->num_groups; g++) {
3774 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
3775 ETH_ALEN) == 0) {
3776 group = p2p->groups[g];
3777 break;
3778 }
3779 }
3780 if (group == NULL) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003781 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003782 MACSTR, MAC2STR(da));
3783 return;
3784 }
3785
3786 if (p2p_parse(data, len, &msg) < 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003787 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003788 status = P2P_SC_FAIL_INVALID_PARAMS;
3789 goto fail;
3790 }
3791 parsed = 1;
3792
3793 if (msg.noa == NULL) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003794 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003795 status = P2P_SC_FAIL_INVALID_PARAMS;
3796 goto fail;
3797 }
3798
3799 status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
3800
3801fail:
3802 if (p2p->cfg->get_noa)
3803 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
3804 sizeof(noa));
3805 else
3806 noa_len = -1;
3807 resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
3808 noa_len > 0 ? noa_len : 0,
3809 msg.dialog_token);
3810 if (parsed)
3811 p2p_parse_free(&msg);
3812 if (resp == NULL)
3813 return;
3814
3815 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3816 if (p2p_send_action(p2p, rx_freq, sa, da, da,
3817 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003818 p2p_dbg(p2p, "Failed to send Action frame");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003819 }
3820 wpabuf_free(resp);
3821}
3822
3823
3824static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
3825 const u8 *sa, const u8 *data, size_t len)
3826{
3827 struct p2p_message msg;
3828
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003829 p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003830
3831 if (p2p_parse(data, len, &msg) < 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003832 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003833 return;
3834 }
3835
3836 if (msg.status == NULL || msg.noa == NULL) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003837 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003838 p2p_parse_free(&msg);
3839 return;
3840 }
3841
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08003842 if (p2p->cfg->presence_resp) {
3843 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status,
3844 msg.noa, msg.noa_len);
3845 }
3846
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003847 if (*msg.status) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003848 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003849 *msg.status);
3850 p2p_parse_free(&msg);
3851 return;
3852 }
3853
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003854 p2p_dbg(p2p, "P2P Presence Request was accepted");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003855 wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
3856 msg.noa, msg.noa_len);
3857 /* TODO: process NoA */
3858 p2p_parse_free(&msg);
3859}
3860
3861
3862static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
3863{
3864 struct p2p_data *p2p = eloop_ctx;
3865
3866 if (p2p->ext_listen_interval) {
3867 /* Schedule next extended listen timeout */
3868 eloop_register_timeout(p2p->ext_listen_interval_sec,
3869 p2p->ext_listen_interval_usec,
3870 p2p_ext_listen_timeout, p2p, NULL);
3871 }
3872
Dmitry Shmidt6dc03bd2014-05-16 10:40:13 -07003873 if ((p2p->cfg->is_p2p_in_progress &&
3874 p2p->cfg->is_p2p_in_progress(p2p->cfg->cb_ctx)) ||
3875 (p2p->pending_action_state == P2P_PENDING_PD &&
3876 p2p->pd_retries > 0)) {
Dmitry Shmidt5a1480c2014-05-12 09:46:02 -07003877 p2p_dbg(p2p, "Operation in progress - skip Extended Listen timeout (%s)",
3878 p2p_state_txt(p2p->state));
3879 return;
3880 }
3881
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003882 if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
3883 /*
3884 * This should not really happen, but it looks like the Listen
3885 * command may fail is something else (e.g., a scan) was
3886 * running at an inconvenient time. As a workaround, allow new
3887 * Extended Listen operation to be started.
3888 */
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003889 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003890 p2p->ext_listen_only = 0;
3891 p2p_set_state(p2p, P2P_IDLE);
3892 }
3893
3894 if (p2p->state != P2P_IDLE) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003895 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003896 return;
3897 }
3898
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003899 p2p_dbg(p2p, "Extended Listen timeout");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003900 p2p->ext_listen_only = 1;
3901 if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003902 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003903 p2p->ext_listen_only = 0;
3904 }
3905}
3906
3907
3908int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
3909 unsigned int interval)
3910{
3911 if (period > 65535 || interval > 65535 || period > interval ||
3912 (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003913 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
3914 period, interval);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003915 return -1;
3916 }
3917
3918 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
3919
3920 if (interval == 0) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003921 p2p_dbg(p2p, "Disabling Extended Listen Timing");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003922 p2p->ext_listen_period = 0;
3923 p2p->ext_listen_interval = 0;
3924 return 0;
3925 }
3926
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003927 p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
3928 period, interval);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003929 p2p->ext_listen_period = period;
3930 p2p->ext_listen_interval = interval;
3931 p2p->ext_listen_interval_sec = interval / 1000;
3932 p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
3933
3934 eloop_register_timeout(p2p->ext_listen_interval_sec,
3935 p2p->ext_listen_interval_usec,
3936 p2p_ext_listen_timeout, p2p, NULL);
3937
3938 return 0;
3939}
3940
3941
3942void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3943 const u8 *ie, size_t ie_len)
3944{
3945 struct p2p_message msg;
3946
3947 if (bssid == NULL || ie == NULL)
3948 return;
3949
3950 os_memset(&msg, 0, sizeof(msg));
3951 if (p2p_parse_ies(ie, ie_len, &msg))
3952 return;
Dmitry Shmidt97672262014-02-03 13:02:54 -08003953 if (msg.minor_reason_code == NULL) {
3954 p2p_parse_free(&msg);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003955 return;
Dmitry Shmidt97672262014-02-03 13:02:54 -08003956 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003957
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003958 p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003959 " reason_code=%u minor_reason_code=%u",
3960 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3961
3962 p2p_parse_free(&msg);
3963}
3964
3965
3966void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3967 const u8 *ie, size_t ie_len)
3968{
3969 struct p2p_message msg;
3970
3971 if (bssid == NULL || ie == NULL)
3972 return;
3973
3974 os_memset(&msg, 0, sizeof(msg));
3975 if (p2p_parse_ies(ie, ie_len, &msg))
3976 return;
Dmitry Shmidt97672262014-02-03 13:02:54 -08003977 if (msg.minor_reason_code == NULL) {
3978 p2p_parse_free(&msg);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003979 return;
Dmitry Shmidt97672262014-02-03 13:02:54 -08003980 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003981
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003982 p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003983 " reason_code=%u minor_reason_code=%u",
3984 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3985
3986 p2p_parse_free(&msg);
3987}
3988
3989
3990void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
3991{
3992 if (enabled) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003993 p2p_dbg(p2p, "Managed P2P Device operations enabled");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003994 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
3995 } else {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07003996 p2p_dbg(p2p, "Managed P2P Device operations disabled");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003997 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
3998 }
3999}
4000
4001
Dmitry Shmidt43cb5782014-06-16 16:23:22 -07004002int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel,
4003 u8 forced)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004004{
Dmitry Shmidt4b060592013-04-29 16:42:49 -07004005 if (p2p_channel_to_freq(reg_class, channel) < 0)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004006 return -1;
4007
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07004008 p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
4009 reg_class, channel);
Dmitry Shmidt43cb5782014-06-16 16:23:22 -07004010
4011 /*
4012 * Listen channel was set in configuration or set by control interface;
4013 * cannot override it.
4014 */
4015 if (p2p->cfg->channel_forced && forced == 0)
4016 return -1;
4017
4018 if (p2p->state == P2P_IDLE) {
4019 p2p->cfg->reg_class = reg_class;
4020 p2p->cfg->channel = channel;
4021 p2p->cfg->channel_forced = forced;
4022 } else {
4023 p2p_dbg(p2p, "Defer setting listen channel");
4024 p2p->pending_reg_class = reg_class;
4025 p2p->pending_channel = channel;
4026 p2p->pending_channel_forced = forced;
4027 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004028
4029 return 0;
4030}
4031
4032
Dmitry Shmidt43cb5782014-06-16 16:23:22 -07004033u8 p2p_get_listen_channel(struct p2p_data *p2p)
4034{
4035 return p2p->cfg->channel;
4036}
4037
4038
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004039int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
4040{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07004041 p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004042 if (postfix == NULL) {
4043 p2p->cfg->ssid_postfix_len = 0;
4044 return 0;
4045 }
4046 if (len > sizeof(p2p->cfg->ssid_postfix))
4047 return -1;
4048 os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
4049 p2p->cfg->ssid_postfix_len = len;
4050 return 0;
4051}
4052
4053
Jouni Malinen75ecf522011-06-27 15:19:46 -07004054int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
4055 int cfg_op_channel)
4056{
Dmitry Shmidt4b060592013-04-29 16:42:49 -07004057 if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
Jouni Malinen75ecf522011-06-27 15:19:46 -07004058 return -1;
4059
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07004060 p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
4061 op_reg_class, op_channel);
Jouni Malinen75ecf522011-06-27 15:19:46 -07004062 p2p->cfg->op_reg_class = op_reg_class;
4063 p2p->cfg->op_channel = op_channel;
4064 p2p->cfg->cfg_op_channel = cfg_op_channel;
4065 return 0;
4066}
4067
4068
Dmitry Shmidt04949592012-07-19 12:16:46 -07004069int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
4070 const struct p2p_channel *pref_chan)
4071{
4072 struct p2p_channel *n;
4073
4074 if (pref_chan) {
4075 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
4076 if (n == NULL)
4077 return -1;
4078 os_memcpy(n, pref_chan,
4079 num_pref_chan * sizeof(struct p2p_channel));
4080 } else
4081 n = NULL;
4082
4083 os_free(p2p->cfg->pref_chan);
4084 p2p->cfg->pref_chan = n;
4085 p2p->cfg->num_pref_chan = num_pref_chan;
4086
4087 return 0;
4088}
4089
4090
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07004091int p2p_set_no_go_freq(struct p2p_data *p2p,
4092 const struct wpa_freq_range_list *list)
4093{
4094 struct wpa_freq_range *tmp;
4095
4096 if (list == NULL || list->num == 0) {
4097 os_free(p2p->no_go_freq.range);
4098 p2p->no_go_freq.range = NULL;
4099 p2p->no_go_freq.num = 0;
4100 return 0;
4101 }
4102
4103 tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
4104 if (tmp == NULL)
4105 return -1;
4106 os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
4107 os_free(p2p->no_go_freq.range);
4108 p2p->no_go_freq.range = tmp;
4109 p2p->no_go_freq.num = list->num;
4110 p2p_dbg(p2p, "Updated no GO chan list");
4111
4112 return 0;
4113}
4114
4115
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004116int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4117 u8 *iface_addr)
4118{
4119 struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4120 if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4121 return -1;
4122 os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4123 return 0;
4124}
4125
4126
4127int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4128 u8 *dev_addr)
4129{
4130 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4131 if (dev == NULL)
4132 return -1;
4133 os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4134 return 0;
4135}
4136
4137
4138void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4139{
4140 os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4141 if (is_zero_ether_addr(p2p->peer_filter))
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07004142 p2p_dbg(p2p, "Disable peer filter");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004143 else
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07004144 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4145 MAC2STR(p2p->peer_filter));
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004146}
4147
4148
4149void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4150{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07004151 p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004152 if (p2p->cross_connect == enabled)
4153 return;
4154 p2p->cross_connect = enabled;
4155 /* TODO: may need to tear down any action group where we are GO(?) */
4156}
4157
4158
4159int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4160{
4161 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4162 if (dev == NULL)
4163 return -1;
4164 if (dev->oper_freq <= 0)
4165 return -1;
4166 return dev->oper_freq;
4167}
4168
4169
4170void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4171{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07004172 p2p_dbg(p2p, "Intra BSS distribution %s",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004173 enabled ? "enabled" : "disabled");
4174 p2p->cfg->p2p_intra_bss = enabled;
4175}
4176
4177
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07004178void p2p_update_channel_list(struct p2p_data *p2p,
4179 const struct p2p_channels *chan,
4180 const struct p2p_channels *cli_chan)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004181{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07004182 p2p_dbg(p2p, "Update channel list");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004183 os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
Dmitry Shmidt68d0e3e2013-10-28 17:59:21 -07004184 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4185 os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4186 sizeof(struct p2p_channels));
4187 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004188}
4189
4190
4191int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4192 const u8 *src, const u8 *bssid, const u8 *buf,
4193 size_t len, unsigned int wait_time)
4194{
4195 if (p2p->p2p_scan_running) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07004196 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004197 if (p2p->after_scan_tx) {
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07004198 p2p_dbg(p2p, "Dropped previous pending Action frame TX");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004199 os_free(p2p->after_scan_tx);
4200 }
4201 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4202 len);
4203 if (p2p->after_scan_tx == NULL)
4204 return -1;
4205 p2p->after_scan_tx->freq = freq;
4206 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4207 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4208 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4209 p2p->after_scan_tx->len = len;
4210 p2p->after_scan_tx->wait_time = wait_time;
4211 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4212 return 0;
4213 }
4214
4215 return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4216 buf, len, wait_time);
4217}
4218
4219
4220void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4221 int freq_overall)
4222{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07004223 p2p_dbg(p2p, "Best channel: 2.4 GHz: %d, 5 GHz: %d, overall: %d",
4224 freq_24, freq_5, freq_overall);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004225 p2p->best_freq_24 = freq_24;
4226 p2p->best_freq_5 = freq_5;
4227 p2p->best_freq_overall = freq_overall;
4228}
4229
4230
Dmitry Shmidt700a1372013-03-15 14:14:44 -07004231void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4232{
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07004233 p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
Dmitry Shmidt700a1372013-03-15 14:14:44 -07004234 p2p->own_freq_preference = freq;
4235}
4236
4237
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004238const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4239{
4240 if (p2p == NULL || p2p->go_neg_peer == NULL)
4241 return NULL;
4242 return p2p->go_neg_peer->info.p2p_device_addr;
4243}
4244
4245
4246const struct p2p_peer_info *
4247p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4248{
4249 struct p2p_device *dev;
4250
4251 if (addr) {
4252 dev = p2p_get_device(p2p, addr);
4253 if (!dev)
4254 return NULL;
4255
4256 if (!next) {
4257 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4258 return NULL;
4259
4260 return &dev->info;
4261 } else {
4262 do {
4263 dev = dl_list_first(&dev->list,
4264 struct p2p_device,
4265 list);
Dmitry Shmidt7832adb2014-04-29 10:53:02 -07004266 if (!dev || &dev->list == &p2p->devices)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004267 return NULL;
4268 } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4269 }
4270 } else {
4271 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4272 if (!dev)
4273 return NULL;
4274 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4275 dev = dl_list_first(&dev->list,
4276 struct p2p_device,
4277 list);
Dmitry Shmidt7832adb2014-04-29 10:53:02 -07004278 if (!dev || &dev->list == &p2p->devices)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004279 return NULL;
4280 }
4281 }
4282
4283 return &dev->info;
4284}
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08004285
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08004286
4287int p2p_in_progress(struct p2p_data *p2p)
4288{
4289 if (p2p == NULL)
4290 return 0;
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08004291 if (p2p->state == P2P_SEARCH)
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07004292 return 2;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08004293 return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
4294}
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07004295
4296
4297void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
4298 u8 client_timeout)
4299{
4300 if (p2p) {
4301 p2p->go_timeout = go_timeout;
4302 p2p->client_timeout = client_timeout;
4303 }
4304}
4305
4306
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07004307#ifdef CONFIG_WIFI_DISPLAY
4308
4309static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
4310{
4311 size_t g;
4312 struct p2p_group *group;
4313
4314 for (g = 0; g < p2p->num_groups; g++) {
4315 group = p2p->groups[g];
Dmitry Shmidtb96dad42013-11-05 10:07:29 -08004316 p2p_group_force_beacon_update_ies(group);
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07004317 }
4318}
4319
4320
4321int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
4322{
4323 wpabuf_free(p2p->wfd_ie_beacon);
4324 p2p->wfd_ie_beacon = ie;
4325 p2p_update_wfd_ie_groups(p2p);
4326 return 0;
4327}
4328
4329
4330int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
4331{
4332 wpabuf_free(p2p->wfd_ie_probe_req);
4333 p2p->wfd_ie_probe_req = ie;
4334 return 0;
4335}
4336
4337
4338int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
4339{
4340 wpabuf_free(p2p->wfd_ie_probe_resp);
4341 p2p->wfd_ie_probe_resp = ie;
4342 p2p_update_wfd_ie_groups(p2p);
4343 return 0;
4344}
4345
4346
4347int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
4348{
4349 wpabuf_free(p2p->wfd_ie_assoc_req);
4350 p2p->wfd_ie_assoc_req = ie;
4351 return 0;
4352}
4353
4354
4355int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
4356{
4357 wpabuf_free(p2p->wfd_ie_invitation);
4358 p2p->wfd_ie_invitation = ie;
4359 return 0;
4360}
4361
4362
4363int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
4364{
4365 wpabuf_free(p2p->wfd_ie_prov_disc_req);
4366 p2p->wfd_ie_prov_disc_req = ie;
4367 return 0;
4368}
4369
4370
4371int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
4372{
4373 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
4374 p2p->wfd_ie_prov_disc_resp = ie;
4375 return 0;
4376}
4377
4378
4379int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
4380{
4381 wpabuf_free(p2p->wfd_ie_go_neg);
4382 p2p->wfd_ie_go_neg = ie;
4383 return 0;
4384}
4385
4386
4387int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
4388{
4389 wpabuf_free(p2p->wfd_dev_info);
4390 if (elem) {
4391 p2p->wfd_dev_info = wpabuf_dup(elem);
4392 if (p2p->wfd_dev_info == NULL)
4393 return -1;
4394 } else
4395 p2p->wfd_dev_info = NULL;
4396
4397 return 0;
4398}
4399
4400
4401int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
4402{
4403 wpabuf_free(p2p->wfd_assoc_bssid);
4404 if (elem) {
4405 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
4406 if (p2p->wfd_assoc_bssid == NULL)
4407 return -1;
4408 } else
4409 p2p->wfd_assoc_bssid = NULL;
4410
4411 return 0;
4412}
4413
4414
4415int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
4416 const struct wpabuf *elem)
4417{
4418 wpabuf_free(p2p->wfd_coupled_sink_info);
4419 if (elem) {
4420 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
4421 if (p2p->wfd_coupled_sink_info == NULL)
4422 return -1;
4423 } else
4424 p2p->wfd_coupled_sink_info = NULL;
4425
4426 return 0;
4427}
4428
4429#endif /* CONFIG_WIFI_DISPLAY */
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08004430
4431
4432int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
4433 int max_disc_tu)
4434{
4435 if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
4436 return -1;
4437
4438 p2p->min_disc_int = min_disc_int;
4439 p2p->max_disc_int = max_disc_int;
4440 p2p->max_disc_tu = max_disc_tu;
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07004441 p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
4442 min_disc_int, max_disc_int, max_disc_tu);
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08004443
4444 return 0;
4445}
Dmitry Shmidtb6e9aaf2013-05-20 14:49:44 -07004446
4447
4448void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
4449{
4450 va_list ap;
4451 char buf[500];
4452
4453 if (!p2p->cfg->debug_print)
4454 return;
4455
4456 va_start(ap, fmt);
4457 vsnprintf(buf, sizeof(buf), fmt, ap);
4458 buf[sizeof(buf) - 1] = '\0';
4459 va_end(ap);
4460 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
4461}
4462
4463
4464void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
4465{
4466 va_list ap;
4467 char buf[500];
4468
4469 if (!p2p->cfg->debug_print)
4470 return;
4471
4472 va_start(ap, fmt);
4473 vsnprintf(buf, sizeof(buf), fmt, ap);
4474 buf[sizeof(buf) - 1] = '\0';
4475 va_end(ap);
4476 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
4477}
4478
4479
4480void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
4481{
4482 va_list ap;
4483 char buf[500];
4484
4485 if (!p2p->cfg->debug_print)
4486 return;
4487
4488 va_start(ap, fmt);
4489 vsnprintf(buf, sizeof(buf), fmt, ap);
4490 buf[sizeof(buf) - 1] = '\0';
4491 va_end(ap);
4492 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
4493}
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08004494
4495
4496#ifdef CONFIG_WPS_NFC
4497
4498static struct wpabuf * p2p_build_nfc_handover(struct p2p_data *p2p,
4499 int client_freq,
4500 const u8 *go_dev_addr,
4501 const u8 *ssid, size_t ssid_len)
4502{
4503 struct wpabuf *buf;
4504 u8 op_class, channel;
4505 enum p2p_role_indication role = P2P_DEVICE_NOT_IN_GROUP;
4506
4507 buf = wpabuf_alloc(1000);
4508 if (buf == NULL)
4509 return NULL;
4510
4511 op_class = p2p->cfg->reg_class;
4512 channel = p2p->cfg->channel;
4513
4514 p2p_buf_add_capability(buf, p2p->dev_capab &
4515 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
4516 p2p_buf_add_device_info(buf, p2p, NULL);
4517
4518 if (p2p->num_groups > 0) {
Dmitry Shmidt7832adb2014-04-29 10:53:02 -07004519 int freq = p2p_group_get_freq(p2p->groups[0]);
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08004520 role = P2P_GO_IN_A_GROUP;
Dmitry Shmidt7832adb2014-04-29 10:53:02 -07004521 if (p2p_freq_to_channel(freq, &op_class, &channel) < 0) {
4522 p2p_dbg(p2p,
4523 "Unknown GO operating frequency %d MHz for NFC handover",
4524 freq);
4525 wpabuf_free(buf);
4526 return NULL;
4527 }
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08004528 } else if (client_freq > 0) {
4529 role = P2P_CLIENT_IN_A_GROUP;
Dmitry Shmidt7832adb2014-04-29 10:53:02 -07004530 if (p2p_freq_to_channel(client_freq, &op_class, &channel) < 0) {
4531 p2p_dbg(p2p,
4532 "Unknown client operating frequency %d MHz for NFC handover",
4533 client_freq);
4534 wpabuf_free(buf);
4535 return NULL;
4536 }
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08004537 }
4538
4539 p2p_buf_add_oob_go_neg_channel(buf, p2p->cfg->country, op_class,
4540 channel, role);
4541
4542 if (p2p->num_groups > 0) {
4543 /* Limit number of clients to avoid very long message */
4544 p2p_buf_add_group_info(p2p->groups[0], buf, 5);
4545 p2p_group_buf_add_id(p2p->groups[0], buf);
4546 } else if (client_freq > 0 &&
4547 go_dev_addr && !is_zero_ether_addr(go_dev_addr) &&
4548 ssid && ssid_len > 0) {
4549 /*
4550 * Add the optional P2P Group ID to indicate in which group this
4551 * device is a P2P Client.
4552 */
4553 p2p_buf_add_group_id(buf, go_dev_addr, ssid, ssid_len);
4554 }
4555
4556 return buf;
4557}
4558
4559
4560struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
4561 int client_freq,
4562 const u8 *go_dev_addr,
4563 const u8 *ssid, size_t ssid_len)
4564{
4565 return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
4566 ssid_len);
4567}
4568
4569
4570struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
4571 int client_freq,
4572 const u8 *go_dev_addr,
4573 const u8 *ssid, size_t ssid_len)
4574{
4575 return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
4576 ssid_len);
4577}
4578
4579
4580int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
4581 struct p2p_nfc_params *params)
4582{
4583 struct p2p_message msg;
4584 struct p2p_device *dev;
4585 const u8 *p2p_dev_addr;
4586 int freq;
4587 enum p2p_role_indication role;
4588
4589 params->next_step = NO_ACTION;
4590
4591 if (p2p_parse_ies_separate(params->wsc_attr, params->wsc_len,
4592 params->p2p_attr, params->p2p_len, &msg)) {
4593 p2p_dbg(p2p, "Failed to parse WSC/P2P attributes from NFC");
4594 p2p_parse_free(&msg);
4595 return -1;
4596 }
4597
4598 if (msg.p2p_device_addr)
4599 p2p_dev_addr = msg.p2p_device_addr;
4600 else if (msg.device_id)
4601 p2p_dev_addr = msg.device_id;
4602 else {
4603 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
4604 p2p_parse_free(&msg);
4605 return -1;
4606 }
4607
4608 if (msg.oob_dev_password) {
4609 os_memcpy(params->oob_dev_pw, msg.oob_dev_password,
4610 msg.oob_dev_password_len);
4611 params->oob_dev_pw_len = msg.oob_dev_password_len;
4612 }
4613
4614 dev = p2p_create_device(p2p, p2p_dev_addr);
4615 if (dev == NULL) {
4616 p2p_parse_free(&msg);
4617 return -1;
4618 }
4619
4620 params->peer = &dev->info;
4621
4622 os_get_reltime(&dev->last_seen);
4623 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
4624 p2p_copy_wps_info(p2p, dev, 0, &msg);
4625
4626 if (!msg.oob_go_neg_channel) {
4627 p2p_dbg(p2p, "OOB GO Negotiation Channel attribute not included");
4628 return -1;
4629 }
4630
4631 if (msg.oob_go_neg_channel[3] == 0 &&
4632 msg.oob_go_neg_channel[4] == 0)
4633 freq = 0;
4634 else
4635 freq = p2p_channel_to_freq(msg.oob_go_neg_channel[3],
4636 msg.oob_go_neg_channel[4]);
4637 if (freq < 0) {
4638 p2p_dbg(p2p, "Unknown peer OOB GO Neg channel");
4639 return -1;
4640 }
4641 role = msg.oob_go_neg_channel[5];
4642
4643 if (role == P2P_GO_IN_A_GROUP) {
4644 p2p_dbg(p2p, "Peer OOB GO operating channel: %u MHz", freq);
4645 params->go_freq = freq;
4646 } else if (role == P2P_CLIENT_IN_A_GROUP) {
4647 p2p_dbg(p2p, "Peer (client) OOB GO operating channel: %u MHz",
4648 freq);
4649 params->go_freq = freq;
4650 } else
4651 p2p_dbg(p2p, "Peer OOB GO Neg channel: %u MHz", freq);
4652 dev->oob_go_neg_freq = freq;
4653
4654 if (!params->sel && role != P2P_GO_IN_A_GROUP) {
4655 freq = p2p_channel_to_freq(p2p->cfg->reg_class,
4656 p2p->cfg->channel);
4657 if (freq < 0) {
4658 p2p_dbg(p2p, "Own listen channel not known");
4659 return -1;
4660 }
4661 p2p_dbg(p2p, "Use own Listen channel as OOB GO Neg channel: %u MHz", freq);
4662 dev->oob_go_neg_freq = freq;
4663 }
4664
4665 if (msg.group_id) {
4666 os_memcpy(params->go_dev_addr, msg.group_id, ETH_ALEN);
4667 params->go_ssid_len = msg.group_id_len - ETH_ALEN;
4668 os_memcpy(params->go_ssid, msg.group_id + ETH_ALEN,
4669 params->go_ssid_len);
4670 }
4671
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08004672 if (dev->flags & P2P_DEV_USER_REJECTED) {
4673 p2p_dbg(p2p, "Do not report rejected device");
Dmitry Shmidt71757432014-06-02 13:50:35 -07004674 p2p_parse_free(&msg);
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08004675 return 0;
4676 }
4677
4678 if (!(dev->flags & P2P_DEV_REPORTED)) {
4679 p2p->cfg->dev_found(p2p->cfg->cb_ctx, p2p_dev_addr, &dev->info,
4680 !(dev->flags & P2P_DEV_REPORTED_ONCE));
4681 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
4682 }
Dmitry Shmidt71757432014-06-02 13:50:35 -07004683 p2p_parse_free(&msg);
Dmitry Shmidtcf32e602014-01-28 10:57:39 -08004684
4685 if (role == P2P_GO_IN_A_GROUP && p2p->num_groups > 0)
4686 params->next_step = BOTH_GO;
4687 else if (role == P2P_GO_IN_A_GROUP)
4688 params->next_step = JOIN_GROUP;
4689 else if (role == P2P_CLIENT_IN_A_GROUP) {
4690 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
4691 params->next_step = PEER_CLIENT;
4692 } else if (p2p->num_groups > 0)
4693 params->next_step = AUTH_JOIN;
4694 else if (params->sel)
4695 params->next_step = INIT_GO_NEG;
4696 else
4697 params->next_step = RESP_GO_NEG;
4698
4699 return 0;
4700}
4701
4702
4703void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
4704 int go_intent,
4705 const u8 *own_interface_addr)
4706{
4707
4708 p2p->authorized_oob_dev_pw_id = dev_pw_id;
4709 if (dev_pw_id == 0) {
4710 p2p_dbg(p2p, "NFC OOB Password unauthorized for static handover");
4711 return;
4712 }
4713
4714 p2p_dbg(p2p, "NFC OOB Password (id=%u) authorized for static handover",
4715 dev_pw_id);
4716
4717 p2p->go_intent = go_intent;
4718 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
4719}
4720
4721#endif /* CONFIG_WPS_NFC */