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Use minimal scan delay upon EVENT_INTERFACE_ADDED
[thirdparty/hostap.git] / src / p2p / p2p.c
CommitLineData
b22128ef
JM		 1/*
2 * Wi-Fi Direct - P2P module
3 * Copyright (c) 2009-2010, Atheros Communications
4 *
e22d4d95
JM		 5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
b22128ef
JM		 7 */
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);
40c03fd4 29static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx);
b22128ef
JM		 30
31
40c03fd4
JM		 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
b22128ef
JM		 40/**
41 * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer
42 * entries will be removed
43 */
44#define P2P_PEER_EXPIRATION_AGE 300
45
46#define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2)
47
48static void p2p_expire_peers(struct p2p_data *p2p)
49{
50 struct p2p_device *dev, *n;
acb69cec 51 struct os_reltime now;
1d277f02 52 size_t i;
b22128ef 53
acb69cec 54 os_get_reltime(&now);
b22128ef
JM		 55 dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
56 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec)
57 continue;
b1aebbc4
JM		 58
59 if (p2p->cfg->go_connected &&
60 p2p->cfg->go_connected(p2p->cfg->cb_ctx,
61 dev->info.p2p_device_addr)) {
62 /*
63 * We are connected as a client to a group in which the
64 * peer is the GO, so do not expire the peer entry.
65 */
acb69cec 66 os_get_reltime(&dev->last_seen);
b1aebbc4
JM		 67 continue;
68 }
69
1d277f02
JM		 70 for (i = 0; i < p2p->num_groups; i++) {
71 if (p2p_group_is_client_connected(
72 p2p->groups[i], dev->info.p2p_device_addr))
73 break;
74 }
75 if (i < p2p->num_groups) {
76 /*
77 * The peer is connected as a client in a group where
78 * we are the GO, so do not expire the peer entry.
79 */
acb69cec 80 os_get_reltime(&dev->last_seen);
1d277f02
JM		 81 continue;
82 }
83
ed496f13
JM		 84 p2p_dbg(p2p, "Expiring old peer entry " MACSTR,
85 MAC2STR(dev->info.p2p_device_addr));
b22128ef
JM		 86 dl_list_del(&dev->list);
87 p2p_device_free(p2p, dev);
88 }
89}
90
91
92static void p2p_expiration_timeout(void *eloop_ctx, void *timeout_ctx)
93{
94 struct p2p_data *p2p = eloop_ctx;
95 p2p_expire_peers(p2p);
96 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
97 p2p_expiration_timeout, p2p, NULL);
98}
99
100
101static const char * p2p_state_txt(int state)
102{
103 switch (state) {
104 case P2P_IDLE:
105 return "IDLE";
106 case P2P_SEARCH:
107 return "SEARCH";
108 case P2P_CONNECT:
109 return "CONNECT";
110 case P2P_CONNECT_LISTEN:
111 return "CONNECT_LISTEN";
112 case P2P_GO_NEG:
113 return "GO_NEG";
114 case P2P_LISTEN_ONLY:
115 return "LISTEN_ONLY";
116 case P2P_WAIT_PEER_CONNECT:
117 return "WAIT_PEER_CONNECT";
118 case P2P_WAIT_PEER_IDLE:
119 return "WAIT_PEER_IDLE";
120 case P2P_SD_DURING_FIND:
121 return "SD_DURING_FIND";
122 case P2P_PROVISIONING:
123 return "PROVISIONING";
124 case P2P_PD_DURING_FIND:
125 return "PD_DURING_FIND";
126 case P2P_INVITE:
127 return "INVITE";
128 case P2P_INVITE_LISTEN:
129 return "INVITE_LISTEN";
130 default:
131 return "?";
132 }
133}
134
135
4c559019
JM		 136const char * p2p_get_state_txt(struct p2p_data *p2p)
137{
138 return p2p_state_txt(p2p->state);
139}
140
141
ec437d9e
JJ		 142u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr)
143{
144 struct p2p_device *dev = NULL;
145
146 if (!addr || !p2p)
147 return 0;
148
149 dev = p2p_get_device(p2p, addr);
150 if (dev)
151 return dev->wps_prov_info;
152 else
153 return 0;
154}
155
156
10531d21 157void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr)
ec437d9e
JJ		 158{
159 struct p2p_device *dev = NULL;
160
10531d21 161 if (!addr || !p2p)
ec437d9e
JJ		 162 return;
163
10531d21 164 dev = p2p_get_device(p2p, addr);
ec437d9e
JJ		 165 if (dev)
166 dev->wps_prov_info = 0;
167}
168
169
b22128ef
JM		 170void p2p_set_state(struct p2p_data *p2p, int new_state)
171{
ed496f13 172 p2p_dbg(p2p, "State %s -> %s",
b22128ef
JM		 173 p2p_state_txt(p2p->state), p2p_state_txt(new_state));
174 p2p->state = new_state;
175}
176
177
178void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
179{
ed496f13 180 p2p_dbg(p2p, "Set timeout (state=%s): %u.%06u sec",
b22128ef
JM		 181 p2p_state_txt(p2p->state), sec, usec);
182 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
183 eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
184}
185
186
187void p2p_clear_timeout(struct p2p_data *p2p)
188{
ed496f13 189 p2p_dbg(p2p, "Clear timeout (state=%s)", p2p_state_txt(p2p->state));
b22128ef
JM		 190 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
191}
192
193
194void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
195 int status)
196{
197 struct p2p_go_neg_results res;
198 p2p_clear_timeout(p2p);
199 p2p_set_state(p2p, P2P_IDLE);
fb8984fd
JM		 200 if (p2p->go_neg_peer) {
201 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
eb916eb8 202 p2p->go_neg_peer->wps_method = WPS_NOT_READY;
fb8984fd 203 }
b22128ef
JM		 204 p2p->go_neg_peer = NULL;
205
206 os_memset(&res, 0, sizeof(res));
207 res.status = status;
208 if (peer) {
c5db8e51 209 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr,
b22128ef
JM		 210 ETH_ALEN);
211 os_memcpy(res.peer_interface_addr, peer->intended_addr,
212 ETH_ALEN);
213 }
214 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
215}
216
217
96beff11 218static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc)
b22128ef
JM		 219{
220 unsigned int r, tu;
221 int freq;
222 struct wpabuf *ies;
223
ed496f13 224 p2p_dbg(p2p, "Starting short listen state (state=%s)",
b22128ef
JM		 225 p2p_state_txt(p2p->state));
226
9ccd9165 227 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
b22128ef 228 if (freq < 0) {
ed496f13 229 p2p_dbg(p2p, "Unknown regulatory class/channel");
b22128ef
JM		 230 return;
231 }
232
233 os_get_random((u8 *) &r, sizeof(r));
234 tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
235 p2p->min_disc_int) * 100;
96beff11
JM		 236 if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu)
237 tu = p2p->max_disc_tu;
238 if (!dev_disc && tu < 100)
239 tu = 100; /* Need to wait in non-device discovery use cases */
240 if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen)
241 tu = p2p->cfg->max_listen * 1000 / 1024;
242
243 if (tu == 0) {
ed496f13 244 p2p_dbg(p2p, "Skip listen state since duration was 0 TU");
96beff11
JM		 245 p2p_set_timeout(p2p, 0, 0);
246 return;
247 }
b22128ef
JM		 248
249 p2p->pending_listen_freq = freq;
250 p2p->pending_listen_sec = 0;
251 p2p->pending_listen_usec = 1024 * tu;
252
253 ies = p2p_build_probe_resp_ies(p2p);
254 if (ies == NULL)
255 return;
256
257 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
258 ies) < 0) {
ed496f13 259 p2p_dbg(p2p, "Failed to start listen mode");
b22128ef
JM		 260 p2p->pending_listen_freq = 0;
261 }
262 wpabuf_free(ies);
263}
264
265
266int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
267{
268 int freq;
269 struct wpabuf *ies;
270
ed496f13 271 p2p_dbg(p2p, "Going to listen(only) state");
b22128ef 272
9ccd9165 273 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
b22128ef 274 if (freq < 0) {
ed496f13 275 p2p_dbg(p2p, "Unknown regulatory class/channel");
b22128ef
JM		 276 return -1;
277 }
278
279 p2p->pending_listen_freq = freq;
280 p2p->pending_listen_sec = timeout / 1000;
281 p2p->pending_listen_usec = (timeout % 1000) * 1000;
282
283 if (p2p->p2p_scan_running) {
5b9cecaf 284 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) {
ed496f13 285 p2p_dbg(p2p, "p2p_scan running - connect is already pending - skip listen");
d9bdba9f
JM		 286 return 0;
287 }
ed496f13 288 p2p_dbg(p2p, "p2p_scan running - delay start of listen state");
b22128ef
JM		 289 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
290 return 0;
291 }
292
293 ies = p2p_build_probe_resp_ies(p2p);
294 if (ies == NULL)
295 return -1;
296
297 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
ed496f13 298 p2p_dbg(p2p, "Failed to start listen mode");
b22128ef
JM		 299 p2p->pending_listen_freq = 0;
300 wpabuf_free(ies);
301 return -1;
302 }
303 wpabuf_free(ies);
304
305 p2p_set_state(p2p, P2P_LISTEN_ONLY);
306
307 return 0;
308}
309
310
311static void p2p_device_clear_reported(struct p2p_data *p2p)
312{
313 struct p2p_device *dev;
314 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list)
315 dev->flags &= ~P2P_DEV_REPORTED;
316}
317
318
319/**
320 * p2p_get_device - Fetch a peer entry
321 * @p2p: P2P module context from p2p_init()
322 * @addr: P2P Device Address of the peer
323 * Returns: Pointer to the device entry or %NULL if not found
324 */
325struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
326{
327 struct p2p_device *dev;
328 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
c5db8e51 329 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
b22128ef
JM		 330 return dev;
331 }
332 return NULL;
333}
334
335
336/**
337 * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
338 * @p2p: P2P module context from p2p_init()
339 * @addr: P2P Interface Address of the peer
340 * Returns: Pointer to the device entry or %NULL if not found
341 */
342struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
343 const u8 *addr)
344{
345 struct p2p_device *dev;
346 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
347 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
348 return dev;
349 }
350 return NULL;
351}
352
353
354/**
355 * p2p_create_device - Create 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 on failure
359 *
360 * If there is already an entry for the peer, it will be returned instead of
361 * creating a new one.
362 */
363static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
364 const u8 *addr)
365{
366 struct p2p_device *dev, *oldest = NULL;
367 size_t count = 0;
368
369 dev = p2p_get_device(p2p, addr);
370 if (dev)
371 return dev;
372
373 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
374 count++;
375 if (oldest == NULL ||
acb69cec 376 os_reltime_before(&dev->last_seen, &oldest->last_seen))
b22128ef
JM		 377 oldest = dev;
378 }
379 if (count + 1 > p2p->cfg->max_peers && oldest) {
ed496f13 380 p2p_dbg(p2p, "Remove oldest peer entry to make room for a new peer");
b22128ef
JM		 381 dl_list_del(&oldest->list);
382 p2p_device_free(p2p, oldest);
383 }
384
385 dev = os_zalloc(sizeof(*dev));
386 if (dev == NULL)
387 return NULL;
388 dl_list_add(&p2p->devices, &dev->list);
c5db8e51 389 os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
b22128ef
JM		 390
391 return dev;
392}
393
394
395static void p2p_copy_client_info(struct p2p_device *dev,
396 struct p2p_client_info *cli)
397{
c5db8e51
KRK		 398 os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len);
399 dev->info.device_name[cli->dev_name_len] = '\0';
400 dev->info.dev_capab = cli->dev_capab;
401 dev->info.config_methods = cli->config_methods;
402 os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
e57ae6e1
JMB		 403 dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
404 os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
405 dev->info.wps_sec_dev_type_list_len);
b22128ef
JM		 406}
407
408
409static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
410 const u8 *go_interface_addr, int freq,
411 const u8 *gi, size_t gi_len)
412{
413 struct p2p_group_info info;
414 size_t c;
415 struct p2p_device *dev;
416
417 if (gi == NULL)
418 return 0;
419
420 if (p2p_group_info_parse(gi, gi_len, &info) < 0)
421 return -1;
422
423 /*
424 * Clear old data for this group; if the devices are still in the
425 * group, the information will be restored in the loop following this.
426 */
427 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
b5472a45 428 if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
b22128ef
JM		 429 ETH_ALEN) == 0) {
430 os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
431 os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
432 }
433 }
434
435 for (c = 0; c < info.num_clients; c++) {
436 struct p2p_client_info *cli = &info.client[c];
2f0c8936
MK		 437 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
438 ETH_ALEN) == 0)
439 continue; /* ignore our own entry */
b22128ef
JM		 440 dev = p2p_get_device(p2p, cli->p2p_device_addr);
441 if (dev) {
b22128ef 442 if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
f33bc035
JM		 443 P2P_DEV_PROBE_REQ_ONLY)) {
444 /*
445 * Update information since we have not
446 * received this directly from the client.
447 */
b22128ef 448 p2p_copy_client_info(dev, cli);
f33bc035
JM		 449 } else {
450 /*
451 * Need to update P2P Client Discoverability
452 * flag since it is valid only in P2P Group
453 * Info attribute.
454 */
455 dev->info.dev_capab &=
456 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
457 dev->info.dev_capab |=
458 cli->dev_capab &
459 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
460 }
b22128ef
JM		 461 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
462 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
463 }
464 } else {
465 dev = p2p_create_device(p2p, cli->p2p_device_addr);
466 if (dev == NULL)
467 continue;
468 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
469 p2p_copy_client_info(dev, cli);
470 dev->oper_freq = freq;
c5db8e51
KRK		 471 p2p->cfg->dev_found(p2p->cfg->cb_ctx,
472 dev->info.p2p_device_addr,
8fd7dc1b
JB		 473 &dev->info, 1);
474 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
b22128ef
JM		 475 }
476
477 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
478 ETH_ALEN);
acb69cec 479 os_get_reltime(&dev->last_seen);
b22128ef
JM		 480 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
481 os_memcpy(dev->member_in_go_iface, go_interface_addr,
482 ETH_ALEN);
483 }
484
485 return 0;
486}
487
488
ed496f13
JM		 489static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev,
490 int probe_req, const struct p2p_message *msg)
b67d0d9e
JM		 491{
492 os_memcpy(dev->info.device_name, msg->device_name,
493 sizeof(dev->info.device_name));
494
495 if (msg->manufacturer &&
496 msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
497 os_memset(dev->info.manufacturer, 0,
498 sizeof(dev->info.manufacturer));
499 os_memcpy(dev->info.manufacturer, msg->manufacturer,
500 msg->manufacturer_len);
501 }
502
503 if (msg->model_name &&
504 msg->model_name_len < sizeof(dev->info.model_name)) {
505 os_memset(dev->info.model_name, 0,
506 sizeof(dev->info.model_name));
507 os_memcpy(dev->info.model_name, msg->model_name,
508 msg->model_name_len);
509 }
510
511 if (msg->model_number &&
512 msg->model_number_len < sizeof(dev->info.model_number)) {
513 os_memset(dev->info.model_number, 0,
514 sizeof(dev->info.model_number));
515 os_memcpy(dev->info.model_number, msg->model_number,
516 msg->model_number_len);
517 }
518
519 if (msg->serial_number &&
520 msg->serial_number_len < sizeof(dev->info.serial_number)) {
521 os_memset(dev->info.serial_number, 0,
522 sizeof(dev->info.serial_number));
523 os_memcpy(dev->info.serial_number, msg->serial_number,
524 msg->serial_number_len);
525 }
526
527 if (msg->pri_dev_type)
528 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
529 sizeof(dev->info.pri_dev_type));
530 else if (msg->wps_pri_dev_type)
531 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
532 sizeof(dev->info.pri_dev_type));
533
534 if (msg->wps_sec_dev_type_list) {
535 os_memcpy(dev->info.wps_sec_dev_type_list,
536 msg->wps_sec_dev_type_list,
537 msg->wps_sec_dev_type_list_len);
538 dev->info.wps_sec_dev_type_list_len =
539 msg->wps_sec_dev_type_list_len;
540 }
541
542 if (msg->capability) {
f33bc035
JM		 543 /*
544 * P2P Client Discoverability bit is reserved in all frames
545 * that use this function, so do not change its value here.
546 */
547 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
548 dev->info.dev_capab |= msg->capability[0] &
549 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
b67d0d9e
JM		 550 dev->info.group_capab = msg->capability[1];
551 }
552
553 if (msg->ext_listen_timing) {
554 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
555 dev->ext_listen_interval =
556 WPA_GET_LE16(msg->ext_listen_timing + 2);
557 }
558
559 if (!probe_req) {
954ee628
JM		 560 u16 new_config_methods;
561 new_config_methods = msg->config_methods ?
b67d0d9e 562 msg->config_methods : msg->wps_config_methods;
954ee628
JM		 563 if (new_config_methods &&
564 dev->info.config_methods != new_config_methods) {
ed496f13
JM		 565 p2p_dbg(p2p, "Update peer " MACSTR
566 " config_methods 0x%x -> 0x%x",
567 MAC2STR(dev->info.p2p_device_addr),
568 dev->info.config_methods,
569 new_config_methods);
954ee628
JM		 570 dev->info.config_methods = new_config_methods;
571 }
b67d0d9e
JM		 572 }
573}
574
575
b22128ef 576/**
c98b83f2 577 * p2p_add_device - Add peer entries based on scan results or P2P frames
b22128ef
JM		 578 * @p2p: P2P module context from p2p_init()
579 * @addr: Source address of Beacon or Probe Response frame (may be either
580 * P2P Device Address or P2P Interface Address)
581 * @level: Signal level (signal strength of the received frame from the peer)
582 * @freq: Frequency on which the Beacon or Probe Response frame was received
c5f10e80 583 * @rx_time: Time when the result was received
b22128ef
JM		 584 * @ies: IEs from the Beacon or Probe Response frame
585 * @ies_len: Length of ies buffer in octets
c98b83f2 586 * @scan_res: Whether this was based on scan results
b22128ef
JM		 587 * Returns: 0 on success, -1 on failure
588 *
589 * If the scan result is for a GO, the clients in the group will also be added
17bef1e9
AC		 590 * to the peer table. This function can also be used with some other frames
591 * like Provision Discovery Request that contains P2P Capability and P2P Device
592 * Info attributes.
b22128ef 593 */
3dfd0484 594int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
acb69cec 595 struct os_reltime *rx_time, int level, const u8 *ies,
3dfd0484 596 size_t ies_len, int scan_res)
b22128ef
JM		 597{
598 struct p2p_device *dev;
599 struct p2p_message msg;
600 const u8 *p2p_dev_addr;
6f2c0607 601 int i;
acb69cec 602 struct os_reltime time_now;
b22128ef
JM		 603
604 os_memset(&msg, 0, sizeof(msg));
605 if (p2p_parse_ies(ies, ies_len, &msg)) {
ed496f13 606 p2p_dbg(p2p, "Failed to parse P2P IE for a device entry");
b22128ef
JM		 607 p2p_parse_free(&msg);
608 return -1;
609 }
610
611 if (msg.p2p_device_addr)
612 p2p_dev_addr = msg.p2p_device_addr;
613 else if (msg.device_id)
614 p2p_dev_addr = msg.device_id;
615 else {
ed496f13 616 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
b22128ef
JM		 617 p2p_parse_free(&msg);
618 return -1;
619 }
620
80c9582a
JM		 621 if (!is_zero_ether_addr(p2p->peer_filter) &&
622 os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
ed496f13
JM		 623 p2p_dbg(p2p, "Do not add peer filter for " MACSTR
624 " due to peer filter", MAC2STR(p2p_dev_addr));
f96c1d76 625 p2p_parse_free(&msg);
80c9582a
JM		 626 return 0;
627 }
628
b22128ef
JM		 629 dev = p2p_create_device(p2p, p2p_dev_addr);
630 if (dev == NULL) {
631 p2p_parse_free(&msg);
632 return -1;
633 }
3dfd0484 634
c5f10e80 635 if (rx_time == NULL) {
acb69cec 636 os_get_reltime(&time_now);
c5f10e80
JM		 637 rx_time = &time_now;
638 }
3dfd0484
YD		 639
640 /*
641 * Update the device entry only if the new peer
642 * entry is newer than the one previously stored.
643 */
c5f10e80 644 if (dev->last_seen.sec > 0 &&
acb69cec 645 os_reltime_before(rx_time, &dev->last_seen)) {
ed496f13 646 p2p_dbg(p2p, "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u)",
c5f10e80
JM		 647 (unsigned int) rx_time->sec,
648 (unsigned int) rx_time->usec,
649 (unsigned int) dev->last_seen.sec,
650 (unsigned int) dev->last_seen.usec);
f96c1d76 651 p2p_parse_free(&msg);
3dfd0484 652 return -1;
f96c1d76 653 }
3dfd0484 654
acb69cec 655 os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
3dfd0484 656
b22128ef
JM		 657 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
658
659 if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
660 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
661 if (msg.ssid &&
662 (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
663 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
664 != 0)) {
665 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
666 dev->oper_ssid_len = msg.ssid[1];
667 }
668
669 if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
670 *msg.ds_params >= 1 && *msg.ds_params <= 14) {
671 int ds_freq;
672 if (*msg.ds_params == 14)
673 ds_freq = 2484;
674 else
675 ds_freq = 2407 + *msg.ds_params * 5;
676 if (freq != ds_freq) {
ed496f13 677 p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz",
b22128ef
JM		 678 freq, ds_freq);
679 freq = ds_freq;
680 }
681 }
682
c98b83f2 683 if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
ed496f13
JM		 684 p2p_dbg(p2p, "Update Listen frequency based on scan results ("
685 MACSTR " %d -> %d MHz (DS param %d)",
c5db8e51
KRK		 686 MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
687 freq, msg.ds_params ? *msg.ds_params : -1);
b22128ef 688 }
c98b83f2
JM		 689 if (scan_res) {
690 dev->listen_freq = freq;
691 if (msg.group_info)
692 dev->oper_freq = freq;
693 }
6402fc43 694 dev->info.level = level;
b22128ef 695
ed496f13 696 p2p_copy_wps_info(p2p, dev, 0, &msg);
e57ae6e1 697
10c5d2a5 698 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
6f2c0607
JMB		 699 wpabuf_free(dev->info.wps_vendor_ext[i]);
700 dev->info.wps_vendor_ext[i] = NULL;
701 }
702
10c5d2a5 703 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
6f2c0607
JMB		 704 if (msg.wps_vendor_ext[i] == NULL)
705 break;
706 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
707 msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
708 if (dev->info.wps_vendor_ext[i] == NULL)
709 break;
710 }
711
9675ce35
JM		 712 if (msg.wfd_subelems) {
713 wpabuf_free(dev->info.wfd_subelems);
714 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
715 }
716
c98b83f2
JM		 717 if (scan_res) {
718 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
719 msg.group_info, msg.group_info_len);
720 }
b22128ef
JM		 721
722 p2p_parse_free(&msg);
723
724 if (p2p_pending_sd_req(p2p, dev))
725 dev->flags |= P2P_DEV_SD_SCHEDULE;
726
727 if (dev->flags & P2P_DEV_REPORTED)
728 return 0;
729
ed496f13
JM		 730 p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)",
731 freq, (unsigned int) rx_time->sec,
c5f10e80 732 (unsigned int) rx_time->usec);
b22128ef 733 if (dev->flags & P2P_DEV_USER_REJECTED) {
ed496f13 734 p2p_dbg(p2p, "Do not report rejected device");
b22128ef
JM		 735 return 0;
736 }
8fd7dc1b 737
8b2b2a70
JM		 738 if (dev->info.config_methods == 0 &&
739 (freq == 2412 || freq == 2437 || freq == 2462)) {
740 /*
741 * If we have only seen a Beacon frame from a GO, we do not yet
742 * know what WPS config methods it supports. Since some
743 * applications use config_methods value from P2P-DEVICE-FOUND
744 * events, postpone reporting this peer until we've fully
745 * discovered its capabilities.
746 *
747 * At least for now, do this only if the peer was detected on
748 * one of the social channels since that peer can be easily be
749 * found again and there are no limitations of having to use
750 * passive scan on this channels, so this can be done through
751 * Probe Response frame that includes the config_methods
752 * information.
753 */
ed496f13
JM		 754 p2p_dbg(p2p, "Do not report peer " MACSTR
755 " with unknown config methods", MAC2STR(addr));
8b2b2a70
JM		 756 return 0;
757 }
758
8fd7dc1b
JB		 759 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
760 !(dev->flags & P2P_DEV_REPORTED_ONCE));
761 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
b22128ef
JM		 762
763 return 0;
764}
765
766
767static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
768{
6f2c0607
JMB		 769 int i;
770
5cfda25e
JJ		 771 if (p2p->go_neg_peer == dev) {
772 /*
773 * If GO Negotiation is in progress, report that it has failed.
774 */
775 p2p_go_neg_failed(p2p, dev, -1);
b22128ef 776 p2p->go_neg_peer = NULL;
5cfda25e 777 }
b22128ef
JM		 778 if (p2p->invite_peer == dev)
779 p2p->invite_peer = NULL;
780 if (p2p->sd_peer == dev)
781 p2p->sd_peer = NULL;
782 if (p2p->pending_client_disc_go == dev)
783 p2p->pending_client_disc_go = NULL;
784
f5fc6032
AC		 785 /* dev_lost() device, but only if it was previously dev_found() */
786 if (dev->flags & P2P_DEV_REPORTED_ONCE)
787 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
788 dev->info.p2p_device_addr);
56eeb8f2 789
10c5d2a5 790 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
6f2c0607
JMB		 791 wpabuf_free(dev->info.wps_vendor_ext[i]);
792 dev->info.wps_vendor_ext[i] = NULL;
793 }
794
9675ce35
JM		 795 wpabuf_free(dev->info.wfd_subelems);
796
b22128ef
JM		 797 os_free(dev);
798}
799
800
801static int p2p_get_next_prog_freq(struct p2p_data *p2p)
802{
803 struct p2p_channels *c;
804 struct p2p_reg_class *cla;
805 size_t cl, ch;
806 int found = 0;
807 u8 reg_class;
808 u8 channel;
809 int freq;
810
811 c = &p2p->cfg->channels;
812 for (cl = 0; cl < c->reg_classes; cl++) {
813 cla = &c->reg_class[cl];
814 if (cla->reg_class != p2p->last_prog_scan_class)
815 continue;
816 for (ch = 0; ch < cla->channels; ch++) {
817 if (cla->channel[ch] == p2p->last_prog_scan_chan) {
818 found = 1;
819 break;
820 }
821 }
822 if (found)
823 break;
824 }
825
826 if (!found) {
827 /* Start from beginning */
828 reg_class = c->reg_class[0].reg_class;
829 channel = c->reg_class[0].channel[0];
830 } else {
831 /* Pick the next channel */
832 ch++;
833 if (ch == cla->channels) {
834 cl++;
835 if (cl == c->reg_classes)
836 cl = 0;
837 ch = 0;
838 }
839 reg_class = c->reg_class[cl].reg_class;
840 channel = c->reg_class[cl].channel[ch];
841 }
842
9ccd9165 843 freq = p2p_channel_to_freq(reg_class, channel);
ed496f13 844 p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz",
b22128ef
JM		 845 reg_class, channel, freq);
846 p2p->last_prog_scan_class = reg_class;
847 p2p->last_prog_scan_chan = channel;
848
849 if (freq == 2412 || freq == 2437 || freq == 2462)
850 return 0; /* No need to add social channels */
851 return freq;
852}
853
854
855static void p2p_search(struct p2p_data *p2p)
856{
857 int freq = 0;
858 enum p2p_scan_type type;
360182ed 859 u16 pw_id = DEV_PW_DEFAULT;
99fcd404 860 int res;
b22128ef
JM		 861
862 if (p2p->drv_in_listen) {
ed496f13 863 p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing");
b22128ef
JM		 864 return;
865 }
866 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
867
e6ecfc4f
JB		 868 if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
869 (freq = p2p_get_next_prog_freq(p2p)) > 0) {
b22128ef 870 type = P2P_SCAN_SOCIAL_PLUS_ONE;
ed496f13 871 p2p_dbg(p2p, "Starting search (+ freq %u)", freq);
b22128ef
JM		 872 } else {
873 type = P2P_SCAN_SOCIAL;
ed496f13 874 p2p_dbg(p2p, "Starting search");
b22128ef
JM		 875 }
876
99fcd404
JM		 877 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
878 p2p->num_req_dev_types, p2p->req_dev_types,
879 p2p->find_dev_id, pw_id);
880 if (res < 0) {
ed496f13 881 p2p_dbg(p2p, "Scan request failed");
b22128ef 882 p2p_continue_find(p2p);
40c03fd4 883 } else {
ed496f13 884 p2p_dbg(p2p, "Running p2p_scan");
40c03fd4
JM		 885 p2p->p2p_scan_running = 1;
886 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
887 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
888 p2p, NULL);
b22128ef
JM		 889 }
890}
891
892
893static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
894{
895 struct p2p_data *p2p = eloop_ctx;
ed496f13 896 p2p_dbg(p2p, "Find timeout -> stop");
b22128ef
JM		 897 p2p_stop_find(p2p);
898}
899
900
901static int p2p_run_after_scan(struct p2p_data *p2p)
902{
903 struct p2p_device *dev;
904 enum p2p_after_scan op;
905
3f9285ff 906 if (p2p->after_scan_tx) {
63a965c3 907 p2p->after_scan_tx_in_progress = 1;
ed496f13 908 p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion");
46eeedac
JM		 909 p2p->cfg->send_action(p2p->cfg->cb_ctx,
910 p2p->after_scan_tx->freq,
911 p2p->after_scan_tx->dst,
912 p2p->after_scan_tx->src,
913 p2p->after_scan_tx->bssid,
914 (u8 *) (p2p->after_scan_tx + 1),
915 p2p->after_scan_tx->len,
916 p2p->after_scan_tx->wait_time);
3f9285ff
JM		 917 os_free(p2p->after_scan_tx);
918 p2p->after_scan_tx = NULL;
919 return 1;
920 }
921
b22128ef
JM		 922 op = p2p->start_after_scan;
923 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
924 switch (op) {
925 case P2P_AFTER_SCAN_NOTHING:
926 break;
927 case P2P_AFTER_SCAN_LISTEN:
ed496f13 928 p2p_dbg(p2p, "Start previously requested Listen state");
b22128ef
JM		 929 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
930 p2p->pending_listen_usec / 1000);
931 return 1;
932 case P2P_AFTER_SCAN_CONNECT:
ed496f13 933 p2p_dbg(p2p, "Start previously requested connect with " MACSTR,
b22128ef
JM		 934 MAC2STR(p2p->after_scan_peer));
935 dev = p2p_get_device(p2p, p2p->after_scan_peer);
936 if (dev == NULL) {
ed496f13 937 p2p_dbg(p2p, "Peer not known anymore");
b22128ef
JM		 938 break;
939 }
940 p2p_connect_send(p2p, dev);
941 return 1;
942 }
943
944 return 0;
945}
946
947
b22128ef
JM		 948static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
949{
950 struct p2p_data *p2p = eloop_ctx;
951 int running;
ed496f13 952 p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running);
b22128ef
JM		 953 running = p2p->p2p_scan_running;
954 /* Make sure we recover from missed scan results callback */
955 p2p->p2p_scan_running = 0;
956
957 if (running)
958 p2p_run_after_scan(p2p);
959}
960
961
046ef4aa
JMB		 962static void p2p_free_req_dev_types(struct p2p_data *p2p)
963{
964 p2p->num_req_dev_types = 0;
965 os_free(p2p->req_dev_types);
966 p2p->req_dev_types = NULL;
967}
968
969
b22128ef 970int p2p_find(struct p2p_data *p2p, unsigned int timeout,
046ef4aa 971 enum p2p_discovery_type type,
6d92fa6e 972 unsigned int num_req_dev_types, const u8 *req_dev_types,
37448ede 973 const u8 *dev_id, unsigned int search_delay)
b22128ef
JM		 974{
975 int res;
976
ed496f13 977 p2p_dbg(p2p, "Starting find (type=%d)", type);
acb69cec 978 os_get_reltime(&p2p->find_start);
b22128ef 979 if (p2p->p2p_scan_running) {
ed496f13 980 p2p_dbg(p2p, "p2p_scan is already running");
b22128ef 981 }
046ef4aa
JMB		 982
983 p2p_free_req_dev_types(p2p);
984 if (req_dev_types && num_req_dev_types) {
985 p2p->req_dev_types = os_malloc(num_req_dev_types *
986 WPS_DEV_TYPE_LEN);
987 if (p2p->req_dev_types == NULL)
988 return -1;
989 os_memcpy(p2p->req_dev_types, req_dev_types,
990 num_req_dev_types * WPS_DEV_TYPE_LEN);
991 p2p->num_req_dev_types = num_req_dev_types;
992 }
993
6d92fa6e
JM		 994 if (dev_id) {
995 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
996 p2p->find_dev_id = p2p->find_dev_id_buf;
997 } else
998 p2p->find_dev_id = NULL;
999
b22128ef
JM		 1000 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1001 p2p_clear_timeout(p2p);
1002 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1003 p2p->find_type = type;
1004 p2p_device_clear_reported(p2p);
1005 p2p_set_state(p2p, P2P_SEARCH);
37448ede
JM		 1006 p2p->search_delay = search_delay;
1007 p2p->in_search_delay = 0;
b22128ef 1008 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
39185dfa 1009 p2p->last_p2p_find_timeout = timeout;
b22128ef
JM		 1010 if (timeout)
1011 eloop_register_timeout(timeout, 0, p2p_find_timeout,
1012 p2p, NULL);
1013 switch (type) {
1014 case P2P_FIND_START_WITH_FULL:
1015 case P2P_FIND_PROGRESSIVE:
046ef4aa
JMB		 1016 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1017 p2p->num_req_dev_types,
360182ed
JM		 1018 p2p->req_dev_types, dev_id,
1019 DEV_PW_DEFAULT);
b22128ef
JM		 1020 break;
1021 case P2P_FIND_ONLY_SOCIAL:
046ef4aa
JMB		 1022 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1023 p2p->num_req_dev_types,
360182ed
JM		 1024 p2p->req_dev_types, dev_id,
1025 DEV_PW_DEFAULT);
b22128ef
JM		 1026 break;
1027 default:
1028 return -1;
1029 }
1030
1031 if (res == 0) {
ed496f13 1032 p2p_dbg(p2p, "Running p2p_scan");
b22128ef
JM		 1033 p2p->p2p_scan_running = 1;
1034 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1035 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1036 p2p, NULL);
1b5d4714
JM		 1037 } else if (p2p->p2p_scan_running) {
1038 p2p_dbg(p2p, "Failed to start p2p_scan - another p2p_scan was already running");
1039 /* wait for the previous p2p_scan to complete */
b22128ef 1040 } else {
ed496f13 1041 p2p_dbg(p2p, "Failed to start p2p_scan");
0c96fd6d
JM		 1042 p2p_set_state(p2p, P2P_IDLE);
1043 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
b22128ef
JM		 1044 }
1045
1046 return res;
1047}
1048
1049
0b8889d8 1050void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
b22128ef 1051{
ed496f13 1052 p2p_dbg(p2p, "Stopping find");
b22128ef
JM		 1053 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1054 p2p_clear_timeout(p2p);
1b5d4714 1055 if (p2p->state == P2P_SEARCH)
710ae9ac 1056 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
b22128ef 1057 p2p_set_state(p2p, P2P_IDLE);
046ef4aa 1058 p2p_free_req_dev_types(p2p);
b22128ef 1059 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
3a2a7c3d 1060 if (p2p->go_neg_peer)
fb8984fd 1061 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
b22128ef
JM		 1062 p2p->go_neg_peer = NULL;
1063 p2p->sd_peer = NULL;
1064 p2p->invite_peer = NULL;
1a9c618d
JM		 1065 p2p_stop_listen_for_freq(p2p, freq);
1066}
1067
1068
1069void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1070{
0b8889d8 1071 if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
ed496f13 1072 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response");
0b8889d8
JM		 1073 return;
1074 }
1a9c618d
JM		 1075 if (p2p->in_listen) {
1076 p2p->in_listen = 0;
1077 p2p_clear_timeout(p2p);
1078 }
54b8f994
JM		 1079 if (p2p->drv_in_listen) {
1080 /*
1081 * The driver may not deliver callback to p2p_listen_end()
1082 * when the operation gets canceled, so clear the internal
1083 * variable that is tracking driver state.
1084 */
ed496f13 1085 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen);
54b8f994
JM		 1086 p2p->drv_in_listen = 0;
1087 }
b22128ef
JM		 1088 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1089}
1090
1091
0b5fb86a
SADR		 1092void p2p_stop_listen(struct p2p_data *p2p)
1093{
1094 if (p2p->state != P2P_LISTEN_ONLY) {
1095 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state.");
1096 return;
1097 }
1098
1099 p2p_stop_listen_for_freq(p2p, 0);
1100 p2p_set_state(p2p, P2P_IDLE);
1101}
1102
1103
0b8889d8
JM		 1104void p2p_stop_find(struct p2p_data *p2p)
1105{
1106 p2p_stop_find_for_freq(p2p, 0);
1107}
1108
1109
e28c226d
JM		 1110static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1111 unsigned int force_freq,
51e9f228 1112 unsigned int pref_freq, int go)
e28c226d
JM		 1113{
1114 u8 op_class, op_channel;
1115 unsigned int freq = force_freq ? force_freq : pref_freq;
1116
51e9f228
JM		 1117 p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d",
1118 force_freq, pref_freq, go);
9ccd9165 1119 if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) {
ed496f13 1120 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq);
e28c226d
JM		 1121 return -1;
1122 }
1123
51e9f228
JM		 1124 if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) &&
1125 (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class,
1126 op_channel))) {
ed496f13
JM		 1127 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P",
1128 freq, op_class, op_channel);
e28c226d
JM		 1129 return -1;
1130 }
1131
1132 p2p->op_reg_class = op_class;
1133 p2p->op_channel = op_channel;
1134
1135 if (force_freq) {
1136 p2p->channels.reg_classes = 1;
1137 p2p->channels.reg_class[0].channels = 1;
1138 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1139 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1140 } else {
1141 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1142 sizeof(struct p2p_channels));
1143 }
1144
1145 return 0;
1146}
1147
1148
1149static void p2p_prepare_channel_best(struct p2p_data *p2p)
1150{
1151 u8 op_class, op_channel;
00043740
JM		 1152 const int op_classes_5ghz[] = { 124, 115, 0 };
1153 const int op_classes_ht40[] = { 126, 127, 116, 117, 0 };
384bdd02 1154 const int op_classes_vht[] = { 128, 0 };
e28c226d 1155
99d7c762
JM		 1156 p2p_dbg(p2p, "Prepare channel best");
1157
e28c226d
JM		 1158 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1159 p2p_supported_freq(p2p, p2p->best_freq_overall) &&
9ccd9165
JM		 1160 p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1161 == 0) {
ed496f13 1162 p2p_dbg(p2p, "Select best overall channel as operating channel preference");
e28c226d
JM		 1163 p2p->op_reg_class = op_class;
1164 p2p->op_channel = op_channel;
1165 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1166 p2p_supported_freq(p2p, p2p->best_freq_5) &&
9ccd9165
JM		 1167 p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1168 == 0) {
ed496f13 1169 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
e28c226d
JM		 1170 p2p->op_reg_class = op_class;
1171 p2p->op_channel = op_channel;
1172 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1173 p2p_supported_freq(p2p, p2p->best_freq_24) &&
9ccd9165
JM		 1174 p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1175 &op_channel) == 0) {
ed496f13 1176 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
e28c226d
JM		 1177 p2p->op_reg_class = op_class;
1178 p2p->op_channel = op_channel;
6701fdc3
JM		 1179 } else if (p2p->cfg->num_pref_chan > 0 &&
1180 p2p_channels_includes(&p2p->cfg->channels,
1181 p2p->cfg->pref_chan[0].op_class,
1182 p2p->cfg->pref_chan[0].chan)) {
1183 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference");
1184 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class;
1185 p2p->op_channel = p2p->cfg->pref_chan[0].chan;
384bdd02
JM		 1186 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht,
1187 &p2p->op_reg_class, &p2p->op_channel) ==
1188 0) {
1189 p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference",
1190 p2p->op_reg_class, p2p->op_channel);
a30d50b3
JM		 1191 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40,
1192 &p2p->op_reg_class, &p2p->op_channel) ==
1193 0) {
1194 p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference",
1195 p2p->op_reg_class, p2p->op_channel);
f2407107
JM		 1196 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz,
1197 &p2p->op_reg_class, &p2p->op_channel) ==
1198 0) {
1199 p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference",
1200 p2p->op_reg_class, p2p->op_channel);
e28c226d 1201 } else {
99d7c762 1202 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference");
e28c226d
JM		 1203 p2p->op_reg_class = p2p->cfg->op_reg_class;
1204 p2p->op_channel = p2p->cfg->op_channel;
1205 }
1206
1207 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1208 sizeof(struct p2p_channels));
1209}
1210
1211
a5830ede
JM		 1212/**
1213 * p2p_prepare_channel - Select operating channel for GO Negotiation
1214 * @p2p: P2P module context from p2p_init()
1215 * @dev: Selected peer device
1216 * @force_freq: Forced frequency in MHz or 0 if not forced
1217 * @pref_freq: Preferred frequency in MHz or 0 if no preference
51e9f228 1218 * @go: Whether the local end will be forced to be GO
a5830ede
JM		 1219 * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1220 *
1221 * This function is used to do initial operating channel selection for GO
1222 * Negotiation prior to having received peer information. The selected channel
1223 * may be further optimized in p2p_reselect_channel() once the peer information
1224 * is available.
1225 */
79879f4a 1226int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
51e9f228 1227 unsigned int force_freq, unsigned int pref_freq, int go)
b22128ef 1228{
51e9f228
JM		 1229 p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d",
1230 force_freq, pref_freq, go);
04a3e69d 1231 if (force_freq || pref_freq) {
51e9f228
JM		 1232 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) <
1233 0)
1e19f734 1234 return -1;
b22128ef 1235 } else {
e28c226d 1236 p2p_prepare_channel_best(p2p);
b22128ef 1237 }
51e9f228
JM		 1238 p2p_channels_dump(p2p, "prepared channels", &p2p->channels);
1239 if (go)
1240 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq);
1241 else if (!force_freq)
1242 p2p_channels_union(&p2p->channels, &p2p->cfg->cli_channels,
1243 &p2p->channels);
1244 p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels);
1245
ed496f13 1246 p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
b22128ef
JM		 1247 p2p->op_reg_class, p2p->op_channel,
1248 force_freq ? " (forced)" : "");
1249
92ac756c
JM		 1250 if (force_freq)
1251 dev->flags |= P2P_DEV_FORCE_FREQ;
1252 else
1253 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1254
7861cb08
JM		 1255 return 0;
1256}
1257
1258
acc247b2
JM		 1259static void p2p_set_dev_persistent(struct p2p_device *dev,
1260 int persistent_group)
1261{
1262 switch (persistent_group) {
1263 case 0:
1264 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1265 P2P_DEV_PREFER_PERSISTENT_RECONN);
1266 break;
1267 case 1:
1268 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1269 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1270 break;
1271 case 2:
1272 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1273 P2P_DEV_PREFER_PERSISTENT_RECONN;
1274 break;
1275 }
1276}
1277
1278
7861cb08
JM		 1279int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1280 enum p2p_wps_method wps_method,
1281 int go_intent, const u8 *own_interface_addr,
23c84252 1282 unsigned int force_freq, int persistent_group,
3bc462cb 1283 const u8 *force_ssid, size_t force_ssid_len,
04a3e69d 1284 int pd_before_go_neg, unsigned int pref_freq)
7861cb08
JM		 1285{
1286 struct p2p_device *dev;
1287
ed496f13 1288 p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
7861cb08 1289 " GO Intent=%d Intended Interface Address=" MACSTR
3bc462cb 1290 " wps_method=%d persistent_group=%d pd_before_go_neg=%d",
7861cb08 1291 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
3bc462cb 1292 wps_method, persistent_group, pd_before_go_neg);
7861cb08 1293
b22128ef
JM		 1294 dev = p2p_get_device(p2p, peer_addr);
1295 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
ed496f13 1296 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
b22128ef
JM		 1297 MAC2STR(peer_addr));
1298 return -1;
1299 }
1300
51e9f228
JM		 1301 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq,
1302 go_intent == 15) < 0)
92ac756c
JM		 1303 return -1;
1304
b22128ef 1305 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
c5db8e51
KRK		 1306 if (!(dev->info.dev_capab &
1307 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
ed496f13 1308 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
b22128ef
JM		 1309 " that is in a group and is not discoverable",
1310 MAC2STR(peer_addr));
1311 return -1;
1312 }
1313 if (dev->oper_freq <= 0) {
ed496f13 1314 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
b22128ef
JM		 1315 " with incomplete information",
1316 MAC2STR(peer_addr));
1317 return -1;
1318 }
1319
1320 /*
1321 * First, try to connect directly. If the peer does not
1322 * acknowledge frames, assume it is sleeping and use device
1323 * discoverability via the GO at that point.
1324 */
1325 }
1326
23c84252
JM		 1327 p2p->ssid_set = 0;
1328 if (force_ssid) {
1329 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1330 force_ssid, force_ssid_len);
1331 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1332 p2p->ssid_len = force_ssid_len;
1333 p2p->ssid_set = 1;
1334 }
1335
b22128ef
JM		 1336 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1337 dev->flags &= ~P2P_DEV_USER_REJECTED;
1338 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1339 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
3bc462cb
JM		 1340 if (pd_before_go_neg)
1341 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
624b4d5a 1342 else {
3bc462cb 1343 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
624b4d5a 1344 /*
003c4580
JM		 1345 * Assign dialog token and tie breaker here to use the same
1346 * values in each retry within the same GO Negotiation exchange.
624b4d5a
SD		 1347 */
1348 dev->dialog_token++;
1349 if (dev->dialog_token == 0)
1350 dev->dialog_token = 1;
003c4580
JM		 1351 dev->tie_breaker = p2p->next_tie_breaker;
1352 p2p->next_tie_breaker = !p2p->next_tie_breaker;
624b4d5a 1353 }
9dac8c3e 1354 dev->connect_reqs = 0;
b22128ef
JM		 1355 dev->go_neg_req_sent = 0;
1356 dev->go_state = UNKNOWN_GO;
acc247b2 1357 p2p_set_dev_persistent(dev, persistent_group);
b22128ef
JM		 1358 p2p->go_intent = go_intent;
1359 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1360
1361 if (p2p->state != P2P_IDLE)
1362 p2p_stop_find(p2p);
1363
f44ae207
JM		 1364 if (p2p->after_scan_tx) {
1365 /*
1366 * We need to drop the pending frame to avoid issues with the
1367 * new GO Negotiation, e.g., when the pending frame was from a
1368 * previous attempt at starting a GO Negotiation.
1369 */
ed496f13 1370 p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion");
f44ae207
JM		 1371 os_free(p2p->after_scan_tx);
1372 p2p->after_scan_tx = NULL;
1373 }
1374
b22128ef
JM		 1375 dev->wps_method = wps_method;
1376 dev->status = P2P_SC_SUCCESS;
d5b20a73 1377
b22128ef 1378 if (p2p->p2p_scan_running) {
ed496f13 1379 p2p_dbg(p2p, "p2p_scan running - delay connect send");
b22128ef
JM		 1380 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1381 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1382 return 0;
1383 }
1384 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1385
1386 return p2p_connect_send(p2p, dev);
1387}
1388
1389
1390int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1391 enum p2p_wps_method wps_method,
1392 int go_intent, const u8 *own_interface_addr,
23c84252 1393 unsigned int force_freq, int persistent_group,
04a3e69d
JM		 1394 const u8 *force_ssid, size_t force_ssid_len,
1395 unsigned int pref_freq)
b22128ef
JM		 1396{
1397 struct p2p_device *dev;
1398
ed496f13 1399 p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
b22128ef
JM		 1400 " GO Intent=%d Intended Interface Address=" MACSTR
1401 " wps_method=%d persistent_group=%d",
1402 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1403 wps_method, persistent_group);
1404
b22128ef
JM		 1405 dev = p2p_get_device(p2p, peer_addr);
1406 if (dev == NULL) {
ed496f13 1407 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
b22128ef
JM		 1408 MAC2STR(peer_addr));
1409 return -1;
1410 }
1411
51e9f228
JM		 1412 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent ==
1413 15) < 0)
92ac756c
JM		 1414 return -1;
1415
23c84252
JM		 1416 p2p->ssid_set = 0;
1417 if (force_ssid) {
1418 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1419 force_ssid, force_ssid_len);
1420 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1421 p2p->ssid_len = force_ssid_len;
1422 p2p->ssid_set = 1;
1423 }
1424
b22128ef
JM		 1425 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1426 dev->flags &= ~P2P_DEV_USER_REJECTED;
1427 dev->go_neg_req_sent = 0;
1428 dev->go_state = UNKNOWN_GO;
acc247b2 1429 p2p_set_dev_persistent(dev, persistent_group);
b22128ef
JM		 1430 p2p->go_intent = go_intent;
1431 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1432
1433 dev->wps_method = wps_method;
1434 dev->status = P2P_SC_SUCCESS;
1435
1436 return 0;
1437}
1438
1439
1440void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1441 struct p2p_device *dev, struct p2p_message *msg)
1442{
acb69cec 1443 os_get_reltime(&dev->last_seen);
b22128ef 1444
ed496f13 1445 p2p_copy_wps_info(p2p, dev, 0, msg);
e57ae6e1 1446
b22128ef
JM		 1447 if (msg->listen_channel) {
1448 int freq;
9ccd9165 1449 freq = p2p_channel_to_freq(msg->listen_channel[3],
b22128ef
JM		 1450 msg->listen_channel[4]);
1451 if (freq < 0) {
ed496f13 1452 p2p_dbg(p2p, "Unknown peer Listen channel: "
b22128ef
JM		 1453 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1454 msg->listen_channel[0],
1455 msg->listen_channel[1],
1456 msg->listen_channel[2],
1457 msg->listen_channel[3],
1458 msg->listen_channel[4]);
1459 } else {
ed496f13
JM		 1460 p2p_dbg(p2p, "Update peer " MACSTR
1461 " Listen channel: %u -> %u MHz",
c5db8e51 1462 MAC2STR(dev->info.p2p_device_addr),
b22128ef
JM		 1463 dev->listen_freq, freq);
1464 dev->listen_freq = freq;
1465 }
1466 }
b22128ef 1467
9675ce35
JM		 1468 if (msg->wfd_subelems) {
1469 wpabuf_free(dev->info.wfd_subelems);
1470 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1471 }
1472
b22128ef
JM		 1473 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1474 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
ed496f13 1475 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
b22128ef 1476 } else {
ed496f13 1477 p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
b22128ef
JM		 1478 MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1479 "listen_freq=%d",
c5db8e51
KRK		 1480 MAC2STR(dev->info.p2p_device_addr),
1481 dev->info.dev_capab, dev->info.group_capab,
1482 dev->info.device_name, dev->listen_freq);
b22128ef
JM		 1483 }
1484
1485 dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1486
1487 if (dev->flags & P2P_DEV_USER_REJECTED) {
ed496f13 1488 p2p_dbg(p2p, "Do not report rejected device");
b22128ef
JM		 1489 return;
1490 }
1491
8fd7dc1b
JB		 1492 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1493 !(dev->flags & P2P_DEV_REPORTED_ONCE));
1494 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
b22128ef
JM		 1495}
1496
1497
1498void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1499{
1500 os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1501 p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1502 os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1503 p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1504 *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1505}
1506
1507
1508int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1509{
1510 p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1511 p2p_random(params->passphrase, 8);
1512 return 0;
1513}
1514
1515
1516void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1517{
1518 struct p2p_go_neg_results res;
1519 int go = peer->go_state == LOCAL_GO;
1520 struct p2p_channels intersection;
1521 int freqs;
1522 size_t i, j;
1523
ed496f13
JM		 1524 p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1525 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
b22128ef
JM		 1526
1527 os_memset(&res, 0, sizeof(res));
1528 res.role_go = go;
c5db8e51 1529 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
b22128ef
JM		 1530 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1531 res.wps_method = peer->wps_method;
acc247b2
JM		 1532 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1533 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1534 res.persistent_group = 2;
1535 else
1536 res.persistent_group = 1;
1537 }
b22128ef
JM		 1538
1539 if (go) {
1540 /* Setup AP mode for WPS provisioning */
9ccd9165 1541 res.freq = p2p_channel_to_freq(p2p->op_reg_class,
b22128ef
JM		 1542 p2p->op_channel);
1543 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1544 res.ssid_len = p2p->ssid_len;
1545 p2p_random(res.passphrase, 8);
e9a7ae41 1546 } else {
b22128ef 1547 res.freq = peer->oper_freq;
e9a7ae41
JM		 1548 if (p2p->ssid_len) {
1549 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1550 res.ssid_len = p2p->ssid_len;
1551 }
1552 }
b22128ef 1553
556b30da
JM		 1554 p2p_channels_dump(p2p, "own channels", &p2p->channels);
1555 p2p_channels_dump(p2p, "peer channels", &peer->channels);
b22128ef
JM		 1556 p2p_channels_intersect(&p2p->channels, &peer->channels,
1557 &intersection);
556b30da
JM		 1558 if (go) {
1559 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq);
1560 p2p_channels_dump(p2p, "intersection after no-GO removal",
1561 &intersection);
1562 }
b22128ef
JM		 1563 freqs = 0;
1564 for (i = 0; i < intersection.reg_classes; i++) {
1565 struct p2p_reg_class *c = &intersection.reg_class[i];
1566 if (freqs + 1 == P2P_MAX_CHANNELS)
1567 break;
1568 for (j = 0; j < c->channels; j++) {
1569 int freq;
1570 if (freqs + 1 == P2P_MAX_CHANNELS)
1571 break;
9ccd9165 1572 freq = p2p_channel_to_freq(c->reg_class, c->channel[j]);
b22128ef
JM		 1573 if (freq < 0)
1574 continue;
1575 res.freq_list[freqs++] = freq;
1576 }
1577 }
1578
ae3e3421
JM		 1579 res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1580
b22128ef 1581 p2p_clear_timeout(p2p);
4458d915 1582 p2p->ssid_set = 0;
b22128ef
JM		 1583 peer->go_neg_req_sent = 0;
1584 peer->wps_method = WPS_NOT_READY;
1585
1586 p2p_set_state(p2p, P2P_PROVISIONING);
1587 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1588}
1589
1590
1591static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1592 const u8 *data, size_t len, int rx_freq)
1593{
ed496f13 1594 p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
b22128ef
JM		 1595 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1596
1597 if (len < 1)
1598 return;
1599
1600 switch (data[0]) {
1601 case P2P_GO_NEG_REQ:
1602 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1603 break;
1604 case P2P_GO_NEG_RESP:
1605 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1606 break;
1607 case P2P_GO_NEG_CONF:
1608 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1609 break;
1610 case P2P_INVITATION_REQ:
1611 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1612 rx_freq);
1613 break;
1614 case P2P_INVITATION_RESP:
dc46fd66 1615 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
b22128ef
JM		 1616 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1617 break;
1618 case P2P_PROV_DISC_REQ:
1619 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1620 break;
1621 case P2P_PROV_DISC_RESP:
1622 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1623 break;
1624 case P2P_DEV_DISC_REQ:
1625 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1626 break;
1627 case P2P_DEV_DISC_RESP:
1628 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1629 break;
1630 default:
ed496f13 1631 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
b22128ef
JM		 1632 data[0]);
1633 break;
1634 }
1635}
1636
1637
19df9b07
JM		 1638static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1639 const u8 *sa, const u8 *bssid, const u8 *data,
1640 size_t len, int freq)
b22128ef
JM		 1641{
1642 if (len < 1)
1643 return;
1644
1645 switch (data[0]) {
1646 case WLAN_PA_VENDOR_SPECIFIC:
1647 data++;
1648 len--;
1649 if (len < 3)
1650 return;
1651 if (WPA_GET_BE24(data) != OUI_WFA)
1652 return;
1653
1654 data += 3;
1655 len -= 3;
1656 if (len < 1)
1657 return;
1658
1659 if (*data != P2P_OUI_TYPE)
1660 return;
1661
1662 p2p_rx_p2p_action(p2p, sa, data + 1, len - 1, freq);
1663 break;
1664 case WLAN_PA_GAS_INITIAL_REQ:
1665 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1666 break;
1667 case WLAN_PA_GAS_INITIAL_RESP:
18708aad
JM		 1668 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1669 break;
1670 case WLAN_PA_GAS_COMEBACK_REQ:
1671 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1672 break;
1673 case WLAN_PA_GAS_COMEBACK_RESP:
1674 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
b22128ef
JM		 1675 break;
1676 }
1677}
1678
1679
1680void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1681 const u8 *bssid, u8 category,
1682 const u8 *data, size_t len, int freq)
1683{
1684 if (category == WLAN_ACTION_PUBLIC) {
1685 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1686 return;
1687 }
1688
1689 if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1690 return;
1691
1692 if (len < 4)
1693 return;
1694
1695 if (WPA_GET_BE24(data) != OUI_WFA)
1696 return;
1697 data += 3;
1698 len -= 3;
1699
1700 if (*data != P2P_OUI_TYPE)
1701 return;
1702 data++;
1703 len--;
1704
1705 /* P2P action frame */
ed496f13 1706 p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
b22128ef
JM		 1707 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1708
1709 if (len < 1)
1710 return;
1711 switch (data[0]) {
1712 case P2P_NOA:
ed496f13 1713 p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
b22128ef
JM		 1714 /* TODO */
1715 break;
1716 case P2P_PRESENCE_REQ:
1717 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1718 break;
1719 case P2P_PRESENCE_RESP:
1720 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1721 break;
1722 case P2P_GO_DISC_REQ:
1723 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1724 break;
1725 default:
ed496f13 1726 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
b22128ef
JM		 1727 break;
1728 }
1729}
1730
1731
1732static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1733{
1734 struct p2p_data *p2p = eloop_ctx;
1735 if (p2p->go_neg_peer == NULL)
1736 return;
1737 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1738 p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1739 p2p_connect_send(p2p, p2p->go_neg_peer);
1740}
1741
1742
1743static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1744{
1745 struct p2p_data *p2p = eloop_ctx;
1746 if (p2p->invite_peer == NULL)
1747 return;
1748 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1749 p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr);
1750}
1751
1752
1753static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1754 const u8 *ie, size_t ie_len)
1755{
1756 struct p2p_message msg;
1757 struct p2p_device *dev;
1758
1759 os_memset(&msg, 0, sizeof(msg));
1760 if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1761 {
1762 p2p_parse_free(&msg);
1763 return; /* not a P2P probe */
1764 }
1765
1766 if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
1767 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
1768 != 0) {
1769 /* The Probe Request is not part of P2P Device Discovery. It is
1770 * not known whether the source address of the frame is the P2P
1771 * Device Address or P2P Interface Address. Do not add a new
1772 * peer entry based on this frames.
1773 */
1774 p2p_parse_free(&msg);
1775 return;
1776 }
1777
1778 dev = p2p_get_device(p2p, addr);
1779 if (dev) {
1780 if (dev->country[0] == 0 && msg.listen_channel)
1781 os_memcpy(dev->country, msg.listen_channel, 3);
acb69cec 1782 os_get_reltime(&dev->last_seen);
b22128ef
JM		 1783 p2p_parse_free(&msg);
1784 return; /* already known */
1785 }
1786
1787 dev = p2p_create_device(p2p, addr);
1788 if (dev == NULL) {
1789 p2p_parse_free(&msg);
1790 return;
1791 }
1792
acb69cec 1793 os_get_reltime(&dev->last_seen);
b22128ef
JM		 1794 dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
1795
b22128ef
JM		 1796 if (msg.listen_channel) {
1797 os_memcpy(dev->country, msg.listen_channel, 3);
9ccd9165 1798 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
b22128ef
JM		 1799 msg.listen_channel[4]);
1800 }
1801
ed496f13 1802 p2p_copy_wps_info(p2p, dev, 1, &msg);
e57ae6e1 1803
9675ce35
JM		 1804 if (msg.wfd_subelems) {
1805 wpabuf_free(dev->info.wfd_subelems);
1806 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
1807 }
1808
b22128ef
JM		 1809 p2p_parse_free(&msg);
1810
ed496f13 1811 p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
b22128ef 1812 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
c5db8e51
KRK		 1813 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
1814 dev->info.group_capab, dev->info.device_name,
1815 dev->listen_freq);
b22128ef
JM		 1816}
1817
1818
1819struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
1820 const u8 *addr,
1821 struct p2p_message *msg)
1822{
1823 struct p2p_device *dev;
1824
1825 dev = p2p_get_device(p2p, addr);
1826 if (dev) {
acb69cec 1827 os_get_reltime(&dev->last_seen);
b22128ef
JM		 1828 return dev; /* already known */
1829 }
1830
1831 dev = p2p_create_device(p2p, addr);
1832 if (dev == NULL)
1833 return NULL;
1834
1835 p2p_add_dev_info(p2p, addr, dev, msg);
1836
1837 return dev;
1838}
1839
1840
1841static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
1842{
1843 if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
1844 return 1;
1845 if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
1846 WPA_GET_BE32(&req_dev_type[2]) == 0 &&
1847 WPA_GET_BE16(&req_dev_type[6]) == 0)
1848 return 1; /* Category match with wildcard OUI/sub-category */
1849 return 0;
1850}
1851
1852
1853int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
1854 size_t num_req_dev_type)
1855{
1856 size_t i;
1857 for (i = 0; i < num_req_dev_type; i++) {
1858 if (dev_type_match(dev_type, req_dev_type[i]))
1859 return 1;
1860 }
1861 return 0;
1862}
1863
1864
1865/**
1866 * p2p_match_dev_type - Match local device type with requested type
1867 * @p2p: P2P module context from p2p_init()
1868 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1869 * Returns: 1 on match, 0 on mismatch
1870 *
1871 * This function can be used to match the Requested Device Type attribute in
1872 * WPS IE with the local device types for deciding whether to reply to a Probe
1873 * Request frame.
1874 */
1875int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
1876{
1877 struct wps_parse_attr attr;
1878 size_t i;
1879
1880 if (wps_parse_msg(wps, &attr))
1881 return 1; /* assume no Requested Device Type attributes */
1882
1883 if (attr.num_req_dev_type == 0)
1884 return 1; /* no Requested Device Type attributes -> match */
1885
1886 if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
1887 attr.num_req_dev_type))
1888 return 1; /* Own Primary Device Type matches */
1889
1890 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++)
1891 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
1892 attr.req_dev_type,
1893 attr.num_req_dev_type))
1894 return 1; /* Own Secondary Device Type matches */
1895
1896 /* No matching device type found */
1897 return 0;
1898}
1899
1900
1901struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
1902{
1903 struct wpabuf *buf;
1904 u8 *len;
360182ed 1905 int pw_id = -1;
9675ce35 1906 size_t extra = 0;
b22128ef 1907
9675ce35
JM		 1908#ifdef CONFIG_WIFI_DISPLAY
1909 if (p2p->wfd_ie_probe_resp)
1910 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
1911#endif /* CONFIG_WIFI_DISPLAY */
1912
1913 buf = wpabuf_alloc(1000 + extra);
b22128ef
JM		 1914 if (buf == NULL)
1915 return NULL;
1916
360182ed
JM		 1917 if (p2p->go_neg_peer) {
1918 /* Advertise immediate availability of WPS credential */
1919 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
1920 }
1921
33183761
JM		 1922 if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) {
1923 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response");
1924 wpabuf_free(buf);
1925 return NULL;
1926 }
b22128ef 1927
9675ce35
JM		 1928#ifdef CONFIG_WIFI_DISPLAY
1929 if (p2p->wfd_ie_probe_resp)
1930 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
1931#endif /* CONFIG_WIFI_DISPLAY */
1932
b22128ef
JM		 1933 /* P2P IE */
1934 len = p2p_buf_add_ie_hdr(buf);
18485b54
MH		 1935 p2p_buf_add_capability(buf, p2p->dev_capab &
1936 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
b22128ef
JM		 1937 if (p2p->ext_listen_interval)
1938 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
1939 p2p->ext_listen_interval);
1940 p2p_buf_add_device_info(buf, p2p, NULL);
1941 p2p_buf_update_ie_hdr(buf, len);
1942
1943 return buf;
1944}
1945
1946
2d43d37f
JB		 1947static enum p2p_probe_req_status
1948p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
1949 const u8 *bssid, const u8 *ie, size_t ie_len)
b22128ef
JM		 1950{
1951 struct ieee802_11_elems elems;
1952 struct wpabuf *buf;
1953 struct ieee80211_mgmt *resp;
97c5b3c4 1954 struct p2p_message msg;
b22128ef
JM		 1955 struct wpabuf *ies;
1956
1957 if (!p2p->in_listen || !p2p->drv_in_listen) {
1958 /* not in Listen state - ignore Probe Request */
2d43d37f 1959 return P2P_PREQ_NOT_LISTEN;
b22128ef
JM		 1960 }
1961
1962 if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
1963 ParseFailed) {
1964 /* Ignore invalid Probe Request frames */
2d43d37f 1965 return P2P_PREQ_MALFORMED;
b22128ef
JM		 1966 }
1967
1968 if (elems.p2p == NULL) {
1969 /* not a P2P probe - ignore it */
2d43d37f 1970 return P2P_PREQ_NOT_P2P;
b22128ef
JM		 1971 }
1972
04a85e44
JM		 1973 if (dst && !is_broadcast_ether_addr(dst) &&
1974 os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
1975 /* Not sent to the broadcast address or our P2P Device Address
1976 */
2d43d37f 1977 return P2P_PREQ_NOT_PROCESSED;
04a85e44
JM		 1978 }
1979
1980 if (bssid && !is_broadcast_ether_addr(bssid)) {
1981 /* Not sent to the Wildcard BSSID */
2d43d37f 1982 return P2P_PREQ_NOT_PROCESSED;
04a85e44
JM		 1983 }
1984
b22128ef
JM		 1985 if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
1986 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
1987 0) {
1988 /* not using P2P Wildcard SSID - ignore */
2d43d37f 1989 return P2P_PREQ_NOT_PROCESSED;
b22128ef
JM		 1990 }
1991
e1d52629
JM		 1992 if (supp_rates_11b_only(&elems)) {
1993 /* Indicates support for 11b rates only */
2d43d37f 1994 return P2P_PREQ_NOT_P2P;
e1d52629
JM		 1995 }
1996
97c5b3c4
JM		 1997 os_memset(&msg, 0, sizeof(msg));
1998 if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
1999 /* Could not parse P2P attributes */
2d43d37f 2000 return P2P_PREQ_NOT_P2P;
97c5b3c4
JM		 2001 }
2002
2003 if (msg.device_id &&
1c7447d0 2004 os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
97c5b3c4
JM		 2005 /* Device ID did not match */
2006 p2p_parse_free(&msg);
2d43d37f 2007 return P2P_PREQ_NOT_PROCESSED;
97c5b3c4
JM		 2008 }
2009
b22128ef 2010 /* Check Requested Device Type match */
97c5b3c4
JM		 2011 if (msg.wps_attributes &&
2012 !p2p_match_dev_type(p2p, msg.wps_attributes)) {
b22128ef 2013 /* No match with Requested Device Type */
97c5b3c4 2014 p2p_parse_free(&msg);
2d43d37f 2015 return P2P_PREQ_NOT_PROCESSED;
b22128ef 2016 }
97c5b3c4 2017 p2p_parse_free(&msg);
b22128ef 2018
2d43d37f
JB		 2019 if (!p2p->cfg->send_probe_resp) {
2020 /* Response generated elsewhere */
2021 return P2P_PREQ_NOT_PROCESSED;
2022 }
b22128ef 2023
ed496f13 2024 p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
b22128ef
JM		 2025
2026 /*
2027 * We do not really have a specific BSS that this frame is advertising,
2028 * so build a frame that has some information in valid format. This is
2029 * really only used for discovery purposes, not to learn exact BSS
2030 * parameters.
2031 */
2032 ies = p2p_build_probe_resp_ies(p2p);
2033 if (ies == NULL)
2d43d37f 2034 return P2P_PREQ_NOT_PROCESSED;
b22128ef
JM		 2035
2036 buf = wpabuf_alloc(200 + wpabuf_len(ies));
2037 if (buf == NULL) {
2038 wpabuf_free(ies);
2d43d37f 2039 return P2P_PREQ_NOT_PROCESSED;
b22128ef
JM		 2040 }
2041
2042 resp = NULL;
2043 resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
2044
2045 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2046 (WLAN_FC_STYPE_PROBE_RESP << 4));
2047 os_memcpy(resp->da, addr, ETH_ALEN);
2048 os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2049 os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2050 resp->u.probe_resp.beacon_int = host_to_le16(100);
2051 /* hardware or low-level driver will setup seq_ctrl and timestamp */
2052 resp->u.probe_resp.capab_info =
2053 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2054 WLAN_CAPABILITY_PRIVACY |
2055 WLAN_CAPABILITY_SHORT_SLOT_TIME);
2056
2057 wpabuf_put_u8(buf, WLAN_EID_SSID);
2058 wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2059 wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2060
2061 wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2062 wpabuf_put_u8(buf, 8);
2063 wpabuf_put_u8(buf, (60 / 5) | 0x80);
2064 wpabuf_put_u8(buf, 90 / 5);
2065 wpabuf_put_u8(buf, (120 / 5) | 0x80);
2066 wpabuf_put_u8(buf, 180 / 5);
2067 wpabuf_put_u8(buf, (240 / 5) | 0x80);
2068 wpabuf_put_u8(buf, 360 / 5);
2069 wpabuf_put_u8(buf, 480 / 5);
2070 wpabuf_put_u8(buf, 540 / 5);
2071
2072 wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2073 wpabuf_put_u8(buf, 1);
2074 wpabuf_put_u8(buf, p2p->cfg->channel);
2075
2076 wpabuf_put_buf(buf, ies);
2077 wpabuf_free(ies);
2078
2079 p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
2080
2081 wpabuf_free(buf);
2d43d37f
JB		 2082
2083 return P2P_PREQ_NOT_PROCESSED;
b22128ef
JM		 2084}
2085
2086
2d43d37f
JB		 2087enum p2p_probe_req_status
2088p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2089 const u8 *bssid, const u8 *ie, size_t ie_len)
b22128ef 2090{
2d43d37f
JB		 2091 enum p2p_probe_req_status res;
2092
b22128ef
JM		 2093 p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2094
2d43d37f 2095 res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len);
b22128ef
JM		 2096
2097 if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2098 p2p->go_neg_peer &&
c5db8e51 2099 os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
c03e2113
JM		 2100 == 0 &&
2101 !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
b22128ef 2102 /* Received a Probe Request from GO Negotiation peer */
ed496f13 2103 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
8cee87ab 2104 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
b22128ef 2105 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2d43d37f 2106 return P2P_PREQ_PROCESSED;
b22128ef
JM		 2107 }
2108
2109 if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2110 p2p->invite_peer &&
c5db8e51
KRK		 2111 os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2112 == 0) {
b22128ef 2113 /* Received a Probe Request from Invite peer */
ed496f13 2114 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
b22128ef 2115 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2d43d37f 2116 return P2P_PREQ_PROCESSED;
b22128ef
JM		 2117 }
2118
2d43d37f 2119 return res;
b22128ef
JM		 2120}
2121
2122
2123static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
4c08c0bd 2124 u8 *buf, size_t len, struct wpabuf *p2p_ie)
b22128ef
JM		 2125{
2126 struct wpabuf *tmp;
2127 u8 *lpos;
2128 size_t tmplen;
2129 int res;
72044390 2130 u8 group_capab;
b22128ef 2131
4c08c0bd
JM		 2132 if (p2p_ie == NULL)
2133 return 0; /* WLAN AP is not a P2P manager */
b22128ef
JM		 2134
2135 /*
2136 * (Re)Association Request - P2P IE
2137 * P2P Capability attribute (shall be present)
4c08c0bd
JM		 2138 * P2P Interface attribute (present if concurrent device and
2139 * P2P Management is enabled)
b22128ef
JM		 2140 */
2141 tmp = wpabuf_alloc(200);
2142 if (tmp == NULL)
2143 return -1;
2144
2145 lpos = p2p_buf_add_ie_hdr(tmp);
72044390
JM		 2146 group_capab = 0;
2147 if (p2p->num_groups > 0) {
2148 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2149 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2150 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2151 p2p->cross_connect)
2152 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2153 }
2154 p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
4c08c0bd
JM		 2155 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2156 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
b22128ef
JM		 2157 p2p_buf_add_p2p_interface(tmp, p2p);
2158 p2p_buf_update_ie_hdr(tmp, lpos);
2159
2160 tmplen = wpabuf_len(tmp);
2161 if (tmplen > len)
2162 res = -1;
2163 else {
2164 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2165 res = tmplen;
2166 }
2167 wpabuf_free(tmp);
2168
2169 return res;
2170}
2171
2172
2173int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
4c08c0bd 2174 size_t len, int p2p_group, struct wpabuf *p2p_ie)
b22128ef
JM		 2175{
2176 struct wpabuf *tmp;
2177 u8 *lpos;
2178 struct p2p_device *peer;
2179 size_t tmplen;
2180 int res;
9675ce35 2181 size_t extra = 0;
b22128ef
JM		 2182
2183 if (!p2p_group)
4c08c0bd 2184 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
b22128ef 2185
9675ce35
JM		 2186#ifdef CONFIG_WIFI_DISPLAY
2187 if (p2p->wfd_ie_assoc_req)
2188 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2189#endif /* CONFIG_WIFI_DISPLAY */
2190
b22128ef
JM		 2191 /*
2192 * (Re)Association Request - P2P IE
2193 * P2P Capability attribute (shall be present)
2194 * Extended Listen Timing (may be present)
2195 * P2P Device Info attribute (shall be present)
2196 */
9675ce35 2197 tmp = wpabuf_alloc(200 + extra);
b22128ef
JM		 2198 if (tmp == NULL)
2199 return -1;
2200
9675ce35
JM		 2201#ifdef CONFIG_WIFI_DISPLAY
2202 if (p2p->wfd_ie_assoc_req)
2203 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2204#endif /* CONFIG_WIFI_DISPLAY */
2205
b22128ef
JM		 2206 peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2207
2208 lpos = p2p_buf_add_ie_hdr(tmp);
2209 p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
5be5305b
JM		 2210 if (p2p->ext_listen_interval)
2211 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2212 p2p->ext_listen_interval);
b22128ef
JM		 2213 p2p_buf_add_device_info(tmp, p2p, peer);
2214 p2p_buf_update_ie_hdr(tmp, lpos);
2215
2216 tmplen = wpabuf_len(tmp);
2217 if (tmplen > len)
2218 res = -1;
2219 else {
2220 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2221 res = tmplen;
2222 }
2223 wpabuf_free(tmp);
2224
2225 return res;
2226}
2227
2228
2229int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2230{
2231 struct wpabuf *p2p_ie;
2232 int ret;
2233
2234 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2235 if (p2p_ie == NULL)
2236 return 0;
2237
2238 ret = p2p_attr_text(p2p_ie, buf, end);
2239 wpabuf_free(p2p_ie);
2240 return ret;
2241}
2242
2243
c2d76aa6 2244int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
0a70f34f 2245{
0a70f34f
JM		 2246 struct p2p_message msg;
2247
0a70f34f 2248 os_memset(&msg, 0, sizeof(msg));
c2d76aa6 2249 if (p2p_parse_p2p_ie(p2p_ie, &msg))
0a70f34f 2250 return -1;
0a70f34f 2251
526ec4ae
JM		 2252 if (msg.p2p_device_addr) {
2253 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
c2d76aa6 2254 return 0;
526ec4ae
JM		 2255 } else if (msg.device_id) {
2256 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
c2d76aa6 2257 return 0;
0a70f34f 2258 }
c2d76aa6
MH		 2259 return -1;
2260}
0a70f34f 2261
c2d76aa6
MH		 2262
2263int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2264{
2265 struct wpabuf *p2p_ie;
2266 int ret;
2267
2268 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2269 P2P_IE_VENDOR_TYPE);
2270 if (p2p_ie == NULL)
2271 return -1;
2272 ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
0a70f34f 2273 wpabuf_free(p2p_ie);
526ec4ae 2274 return ret;
0a70f34f
JM		 2275}
2276
2277
b22128ef
JM		 2278static void p2p_clear_go_neg(struct p2p_data *p2p)
2279{
2280 p2p->go_neg_peer = NULL;
2281 p2p_clear_timeout(p2p);
2282 p2p_set_state(p2p, P2P_IDLE);
2283}
2284
2285
2286void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2287{
2288 if (p2p->go_neg_peer == NULL) {
ed496f13 2289 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
b22128ef
JM		 2290 return; /* No pending Group Formation */
2291 }
2292
2293 if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2294 0) {
ed496f13
JM		 2295 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2296 MACSTR " (GO Negotiation peer " MACSTR ")",
b22128ef
JM		 2297 MAC2STR(mac_addr),
2298 MAC2STR(p2p->go_neg_peer->intended_addr));
2299 return; /* Ignore unexpected peer address */
2300 }
2301
ed496f13 2302 p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
b22128ef
JM		 2303 MAC2STR(mac_addr));
2304
2305 p2p_clear_go_neg(p2p);
2306}
2307
2308
2309void p2p_group_formation_failed(struct p2p_data *p2p)
2310{
2311 if (p2p->go_neg_peer == NULL) {
ed496f13 2312 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
b22128ef
JM		 2313 return; /* No pending Group Formation */
2314 }
2315
ed496f13 2316 p2p_dbg(p2p, "Group Formation failed with " MACSTR,
b22128ef
JM		 2317 MAC2STR(p2p->go_neg_peer->intended_addr));
2318
2319 p2p_clear_go_neg(p2p);
2320}
2321
2322
2323struct p2p_data * p2p_init(const struct p2p_config *cfg)
2324{
2325 struct p2p_data *p2p;
2326
2327 if (cfg->max_peers < 1)
2328 return NULL;
2329
2330 p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2331 if (p2p == NULL)
2332 return NULL;
2333 p2p->cfg = (struct p2p_config *) (p2p + 1);
2334 os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2335 if (cfg->dev_name)
2336 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
b6e01800
JM		 2337 if (cfg->manufacturer)
2338 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2339 if (cfg->model_name)
2340 p2p->cfg->model_name = os_strdup(cfg->model_name);
2341 if (cfg->model_number)
2342 p2p->cfg->model_number = os_strdup(cfg->model_number);
2343 if (cfg->serial_number)
2344 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
21d996f7
JM		 2345 if (cfg->pref_chan) {
2346 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2347 sizeof(struct p2p_channel));
2348 if (p2p->cfg->pref_chan) {
2349 os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2350 cfg->num_pref_chan *
2351 sizeof(struct p2p_channel));
2352 } else
2353 p2p->cfg->num_pref_chan = 0;
2354 }
b22128ef
JM		 2355
2356 p2p->min_disc_int = 1;
2357 p2p->max_disc_int = 3;
96beff11 2358 p2p->max_disc_tu = -1;
b22128ef
JM		 2359
2360 os_get_random(&p2p->next_tie_breaker, 1);
2361 p2p->next_tie_breaker &= 0x01;
2362 if (cfg->sd_request)
2363 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2364 p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2365 if (cfg->concurrent_operations)
2366 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2367 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2368
2369 dl_list_init(&p2p->devices);
2370
2371 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2372 p2p_expiration_timeout, p2p, NULL);
2373
4f219667
JM		 2374 p2p->go_timeout = 100;
2375 p2p->client_timeout = 20;
2376
51e9f228
JM		 2377 p2p_dbg(p2p, "initialized");
2378 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2379 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2380
b22128ef
JM		 2381 return p2p;
2382}
2383
2384
2385void p2p_deinit(struct p2p_data *p2p)
2386{
9675ce35
JM		 2387#ifdef CONFIG_WIFI_DISPLAY
2388 wpabuf_free(p2p->wfd_ie_beacon);
2389 wpabuf_free(p2p->wfd_ie_probe_req);
2390 wpabuf_free(p2p->wfd_ie_probe_resp);
2391 wpabuf_free(p2p->wfd_ie_assoc_req);
2392 wpabuf_free(p2p->wfd_ie_invitation);
2393 wpabuf_free(p2p->wfd_ie_prov_disc_req);
2394 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2395 wpabuf_free(p2p->wfd_ie_go_neg);
2396 wpabuf_free(p2p->wfd_dev_info);
2397 wpabuf_free(p2p->wfd_assoc_bssid);
2398 wpabuf_free(p2p->wfd_coupled_sink_info);
2399#endif /* CONFIG_WIFI_DISPLAY */
2400
b22128ef
JM		 2401 eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2402 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2403 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
8cee87ab 2404 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
b22128ef 2405 p2p_flush(p2p);
046ef4aa 2406 p2p_free_req_dev_types(p2p);
b22128ef 2407 os_free(p2p->cfg->dev_name);
b6e01800
JM		 2408 os_free(p2p->cfg->manufacturer);
2409 os_free(p2p->cfg->model_name);
2410 os_free(p2p->cfg->model_number);
2411 os_free(p2p->cfg->serial_number);
21d996f7 2412 os_free(p2p->cfg->pref_chan);
b22128ef 2413 os_free(p2p->groups);
18708aad 2414 wpabuf_free(p2p->sd_resp);
3f9285ff 2415 os_free(p2p->after_scan_tx);
f95cac27 2416 p2p_remove_wps_vendor_extensions(p2p);
556b30da 2417 os_free(p2p->no_go_freq.range);
b22128ef
JM		 2418 os_free(p2p);
2419}
2420
2421
2422void p2p_flush(struct p2p_data *p2p)
2423{
2424 struct p2p_device *dev, *prev;
78db55b8 2425 p2p_stop_find(p2p);
b22128ef
JM		 2426 dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2427 list) {
2428 dl_list_del(&dev->list);
2429 p2p_device_free(p2p, dev);
2430 }
2431 p2p_free_sd_queries(p2p);
f44ae207
JM		 2432 os_free(p2p->after_scan_tx);
2433 p2p->after_scan_tx = NULL;
b22128ef
JM		 2434}
2435
2436
9d562b79
SS		 2437int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2438{
2439 struct p2p_device *dev;
2440
2441 dev = p2p_get_device(p2p, addr);
2442 if (dev == NULL)
2443 return -1;
2444
ed496f13 2445 p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
9d562b79
SS		 2446
2447 if (p2p->go_neg_peer == dev)
2448 p2p->go_neg_peer = NULL;
2449
2450 dev->wps_method = WPS_NOT_READY;
2451 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2452 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2453
2454 /* Check if after_scan_tx is for this peer. If so free it */
2455 if (p2p->after_scan_tx &&
2456 os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2457 os_free(p2p->after_scan_tx);
2458 p2p->after_scan_tx = NULL;
2459 }
2460
2461 return 0;
2462}
2463
2464
b22128ef
JM		 2465int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2466{
2467 os_free(p2p->cfg->dev_name);
2468 if (dev_name) {
2469 p2p->cfg->dev_name = os_strdup(dev_name);
2470 if (p2p->cfg->dev_name == NULL)
2471 return -1;
2472 } else
2473 p2p->cfg->dev_name = NULL;
2474 return 0;
2475}
2476
2477
b6e01800
JM		 2478int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
2479{
2480 os_free(p2p->cfg->manufacturer);
2481 p2p->cfg->manufacturer = NULL;
2482 if (manufacturer) {
2483 p2p->cfg->manufacturer = os_strdup(manufacturer);
2484 if (p2p->cfg->manufacturer == NULL)
2485 return -1;
2486 }
2487
2488 return 0;
2489}
2490
2491
2492int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
2493{
2494 os_free(p2p->cfg->model_name);
2495 p2p->cfg->model_name = NULL;
2496 if (model_name) {
2497 p2p->cfg->model_name = os_strdup(model_name);
2498 if (p2p->cfg->model_name == NULL)
2499 return -1;
2500 }
2501
2502 return 0;
2503}
2504
2505
2506int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
2507{
2508 os_free(p2p->cfg->model_number);
2509 p2p->cfg->model_number = NULL;
2510 if (model_number) {
2511 p2p->cfg->model_number = os_strdup(model_number);
2512 if (p2p->cfg->model_number == NULL)
2513 return -1;
2514 }
2515
2516 return 0;
2517}
2518
2519
2520int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
2521{
2522 os_free(p2p->cfg->serial_number);
2523 p2p->cfg->serial_number = NULL;
2524 if (serial_number) {
2525 p2p->cfg->serial_number = os_strdup(serial_number);
2526 if (p2p->cfg->serial_number == NULL)
2527 return -1;
2528 }
2529
2530 return 0;
2531}
2532
2533
2534void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
2535{
2536 p2p->cfg->config_methods = config_methods;
2537}
2538
2539
2540void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
2541{
2542 os_memcpy(p2p->cfg->uuid, uuid, 16);
2543}
2544
2545
b22128ef
JM		 2546int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
2547{
2548 os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
2549 return 0;
2550}
2551
2552
2553int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
2554 size_t num_dev_types)
2555{
2556 if (num_dev_types > P2P_SEC_DEVICE_TYPES)
2557 num_dev_types = P2P_SEC_DEVICE_TYPES;
2558 p2p->cfg->num_sec_dev_types = num_dev_types;
2559 os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
2560 return 0;
2561}
2562
2563
f95cac27
JMB		 2564void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
2565{
2566 int i;
2567
10c5d2a5 2568 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
f95cac27
JMB		 2569 wpabuf_free(p2p->wps_vendor_ext[i]);
2570 p2p->wps_vendor_ext[i] = NULL;
2571 }
2572}
2573
2574
2575int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2576 const struct wpabuf *vendor_ext)
2577{
2578 int i;
2579
2580 if (vendor_ext == NULL)
2581 return -1;
2582
10c5d2a5 2583 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
f95cac27
JMB		 2584 if (p2p->wps_vendor_ext[i] == NULL)
2585 break;
2586 }
10c5d2a5 2587 if (i >= P2P_MAX_WPS_VENDOR_EXT)
f95cac27
JMB		 2588 return -1;
2589
2590 p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
2591 if (p2p->wps_vendor_ext[i] == NULL)
2592 return -1;
2593
2594 return 0;
2595}
2596
2597
b22128ef
JM		 2598int p2p_set_country(struct p2p_data *p2p, const char *country)
2599{
2600 os_memcpy(p2p->cfg->country, country, 3);
2601 return 0;
2602}
2603
2604
2605void p2p_continue_find(struct p2p_data *p2p)
2606{
2607 struct p2p_device *dev;
2608 p2p_set_state(p2p, P2P_SEARCH);
2609 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2610 if (dev->flags & P2P_DEV_SD_SCHEDULE) {
2611 if (p2p_start_sd(p2p, dev) == 0)
2612 return;
2613 else
2614 break;
10c4edde
JM		 2615 } else if (dev->req_config_methods &&
2616 !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
ed496f13 2617 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
10c4edde 2618 MACSTR " (config methods 0x%x)",
c5db8e51 2619 MAC2STR(dev->info.p2p_device_addr),
10c4edde 2620 dev->req_config_methods);
1ef2f7ff 2621 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
b22128ef
JM		 2622 return;
2623 }
2624 }
2625
96beff11 2626 p2p_listen_in_find(p2p, 1);
b22128ef
JM		 2627}
2628
2629
2630static void p2p_sd_cb(struct p2p_data *p2p, int success)
2631{
ed496f13 2632 p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
b22128ef
JM		 2633 success);
2634 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2635
2636 if (!success) {
2637 if (p2p->sd_peer) {
2638 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
2639 p2p->sd_peer = NULL;
2640 }
2641 p2p_continue_find(p2p);
2642 return;
2643 }
2644
2645 if (p2p->sd_peer == NULL) {
ed496f13 2646 p2p_dbg(p2p, "No SD peer entry known");
b22128ef
JM		 2647 p2p_continue_find(p2p);
2648 return;
2649 }
2650
2651 /* Wait for response from the peer */
2652 p2p_set_state(p2p, P2P_SD_DURING_FIND);
2653 p2p_set_timeout(p2p, 0, 200000);
2654}
2655
6b56cc2d
JS		 2656
2657/**
2658 * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
2659 * @p2p: P2P module context from p2p_init()
2660 */
19df9b07 2661static void p2p_retry_pd(struct p2p_data *p2p)
6b56cc2d
JS		 2662{
2663 struct p2p_device *dev;
2664
2665 if (p2p->state != P2P_IDLE)
2666 return;
2667
2668 /*
2669 * Retry the prov disc req attempt only for the peer that the user had
175171ac 2670 * requested.
6b56cc2d
JS		 2671 */
2672
2673 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2674 if (os_memcmp(p2p->pending_pd_devaddr,
2675 dev->info.p2p_device_addr, ETH_ALEN) != 0)
2676 continue;
2677 if (!dev->req_config_methods)
2678 continue;
6b56cc2d 2679
ed496f13 2680 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
6b56cc2d
JS		 2681 MACSTR " (config methods 0x%x)",
2682 MAC2STR(dev->info.p2p_device_addr),
2683 dev->req_config_methods);
175171ac 2684 p2p_send_prov_disc_req(p2p, dev,
8d82c210
JM		 2685 dev->flags & P2P_DEV_PD_FOR_JOIN,
2686 p2p->pd_force_freq);
6b56cc2d
JS		 2687 return;
2688 }
2689}
2690
2691
b22128ef
JM		 2692static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
2693{
ed496f13 2694 p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
b22128ef 2695 success);
6b56cc2d
JS		 2696
2697 /*
2698 * Postpone resetting the pending action state till after we actually
2699 * time out. This allows us to take some action like notifying any
2700 * interested parties about no response to the request.
2701 *
2702 * When the timer (below) goes off we check in IDLE, SEARCH, or
2703 * LISTEN_ONLY state, which are the only allowed states to issue a PD
2704 * requests in, if this was still pending and then raise notification.
2705 */
b22128ef
JM		 2706
2707 if (!success) {
6b56cc2d
JS		 2708 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2709
488f4a71
JM		 2710 if (p2p->user_initiated_pd &&
2711 (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
2712 {
2713 /* Retry request from timeout to avoid busy loops */
2714 p2p->pending_action_state = P2P_PENDING_PD;
2715 p2p_set_timeout(p2p, 0, 50000);
2716 } else if (p2p->state != P2P_IDLE)
b22128ef 2717 p2p_continue_find(p2p);
6b56cc2d
JS		 2718 else if (p2p->user_initiated_pd) {
2719 p2p->pending_action_state = P2P_PENDING_PD;
2720 p2p_set_timeout(p2p, 0, 300000);
2721 }
b22128ef
JM		 2722 return;
2723 }
2724
6b56cc2d
JS		 2725 /*
2726 * This postponing, of resetting pending_action_state, needs to be
2727 * done only for user initiated PD requests and not internal ones.
2728 */
2729 if (p2p->user_initiated_pd)
2730 p2p->pending_action_state = P2P_PENDING_PD;
2731 else
2732 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2733
b22128ef
JM		 2734 /* Wait for response from the peer */
2735 if (p2p->state == P2P_SEARCH)
2736 p2p_set_state(p2p, P2P_PD_DURING_FIND);
2737 p2p_set_timeout(p2p, 0, 200000);
2738}
2739
2740
2741int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
acb69cec 2742 struct os_reltime *rx_time, int level, const u8 *ies,
3dfd0484 2743 size_t ies_len)
b22128ef 2744{
acb69cec 2745 if (os_reltime_before(rx_time, &p2p->find_start)) {
a5b5e830
JM		 2746 /*
2747 * The driver may have cached (e.g., in cfg80211 BSS table) the
2748 * scan results for relatively long time. To avoid reporting
2749 * stale information, update P2P peers only based on results
2750 * that have based on frames received after the last p2p_find
2751 * operation was started.
2752 */
ed496f13
JM		 2753 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
2754 " (rx_time=%u.%06u)",
a5b5e830
JM		 2755 MAC2STR(bssid), (unsigned int) rx_time->sec,
2756 (unsigned int) rx_time->usec);
2757 return 0;
2758 }
2759
c5f10e80 2760 p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
b22128ef 2761
b22128ef
JM		 2762 return 0;
2763}
2764
2765
2766void p2p_scan_res_handled(struct p2p_data *p2p)
2767{
2768 if (!p2p->p2p_scan_running) {
ed496f13 2769 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
b22128ef
JM		 2770 }
2771 p2p->p2p_scan_running = 0;
2772 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2773
2774 if (p2p_run_after_scan(p2p))
2775 return;
2776 if (p2p->state == P2P_SEARCH)
2777 p2p_continue_find(p2p);
2778}
2779
2780
6d92fa6e 2781void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
b22128ef 2782{
9675ce35
JM		 2783 u8 *len;
2784
2785#ifdef CONFIG_WIFI_DISPLAY
2786 if (p2p->wfd_ie_probe_req)
2787 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
2788#endif /* CONFIG_WIFI_DISPLAY */
2789
2790 len = p2p_buf_add_ie_hdr(ies);
18485b54
MH		 2791 p2p_buf_add_capability(ies, p2p->dev_capab &
2792 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
6d92fa6e
JM		 2793 if (dev_id)
2794 p2p_buf_add_device_id(ies, dev_id);
b22128ef
JM		 2795 if (p2p->cfg->reg_class && p2p->cfg->channel)
2796 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
2797 p2p->cfg->reg_class,
2798 p2p->cfg->channel);
2799 if (p2p->ext_listen_interval)
2800 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
2801 p2p->ext_listen_interval);
2802 /* TODO: p2p_buf_add_operating_channel() if GO */
2803 p2p_buf_update_ie_hdr(ies, len);
2804}
2805
2806
206e1f42
JM		 2807size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
2808{
9675ce35
JM		 2809 size_t len = 100;
2810
2811#ifdef CONFIG_WIFI_DISPLAY
2812 if (p2p && p2p->wfd_ie_probe_req)
2813 len += wpabuf_len(p2p->wfd_ie_probe_req);
2814#endif /* CONFIG_WIFI_DISPLAY */
2815
2816 return len;
206e1f42
JM		 2817}
2818
2819
b22128ef
JM		 2820int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
2821{
2822 return p2p_attr_text(p2p_ie, buf, end);
2823}
2824
2825
2826static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
2827{
2828 struct p2p_device *dev = p2p->go_neg_peer;
fb8984fd 2829 int timeout;
b22128ef 2830
ed496f13 2831 p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
b22128ef
JM		 2832
2833 if (dev == NULL) {
ed496f13 2834 p2p_dbg(p2p, "No pending GO Negotiation");
b22128ef
JM		 2835 return;
2836 }
2837
2838 if (success) {
b22128ef
JM		 2839 if (dev->flags & P2P_DEV_USER_REJECTED) {
2840 p2p_set_state(p2p, P2P_IDLE);
2841 return;
2842 }
a1d2ab32
NKG		 2843 } else if (dev->go_neg_req_sent) {
2844 /* Cancel the increment from p2p_connect_send() on failure */
2845 dev->go_neg_req_sent--;
b22128ef
JM		 2846 }
2847
2848 if (!success &&
c5db8e51 2849 (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
b22128ef 2850 !is_zero_ether_addr(dev->member_in_go_dev)) {
ed496f13 2851 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
c5db8e51 2852 MAC2STR(dev->info.p2p_device_addr));
b22128ef
JM		 2853 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2854 p2p_send_dev_disc_req(p2p, dev);
2855 return;
2856 }
2857
2858 /*
2859 * Use P2P find, if needed, to find the other device from its listen
2860 * channel.
2861 */
2862 p2p_set_state(p2p, P2P_CONNECT);
fb8984fd
JM		 2863 timeout = success ? 500000 : 100000;
2864 if (!success && p2p->go_neg_peer &&
2865 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
2866 unsigned int r;
2867 /*
2868 * Peer is expected to wait our response and we will skip the
2869 * listen phase. Add some randomness to the wait time here to
2870 * make it less likely to hit cases where we could end up in
2871 * sync with peer not listening.
2872 */
2873 os_get_random((u8 *) &r, sizeof(r));
2874 timeout += r % 100000;
2875 }
2876 p2p_set_timeout(p2p, 0, timeout);
b22128ef
JM		 2877}
2878
2879
2880static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
2881{
ed496f13 2882 p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
b22128ef
JM		 2883 success);
2884 if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
ed496f13 2885 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
b22128ef
JM		 2886 return;
2887 }
2888 p2p_set_state(p2p, P2P_CONNECT);
8e4839ce 2889 p2p_set_timeout(p2p, 0, 500000);
b22128ef
JM		 2890}
2891
2892
7800d45c
JM		 2893static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
2894 const u8 *addr)
b22128ef 2895{
ed496f13 2896 p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
fbe70272
JM		 2897 if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
2898 p2p_go_neg_failed(p2p, p2p->go_neg_peer,
2899 p2p->go_neg_peer->status);
7800d45c
JM		 2900 } else if (success) {
2901 struct p2p_device *dev;
2902 dev = p2p_get_device(p2p, addr);
2903 if (dev &&
2904 dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
2905 dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
fbe70272 2906 }
b22128ef
JM		 2907}
2908
2909
93b7ddd0
JM		 2910static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
2911 enum p2p_send_action_result result)
b22128ef
JM		 2912{
2913 struct p2p_device *dev;
2914
ed496f13 2915 p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
b22128ef 2916 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
93b7ddd0
JM		 2917 if (result == P2P_SEND_ACTION_FAILED) {
2918 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2919 return;
2920 }
2921 if (result == P2P_SEND_ACTION_NO_ACK) {
b22128ef
JM		 2922 /*
2923 * It looks like the TX status for GO Negotiation Confirm is
2924 * often showing failure even when the peer has actually
2925 * received the frame. Since the peer may change channels
2926 * immediately after having received the frame, we may not see
2927 * an Ack for retries, so just dropping a single frame may
2928 * trigger this. To allow the group formation to succeed if the
2929 * peer did indeed receive the frame, continue regardless of
2930 * the TX status.
2931 */
ed496f13 2932 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
b22128ef
JM		 2933 }
2934
2935 dev = p2p->go_neg_peer;
2936 if (dev == NULL)
2937 return;
2938
2939 p2p_go_complete(p2p, dev);
2940}
2941
2942
2943void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
93b7ddd0
JM		 2944 const u8 *src, const u8 *bssid,
2945 enum p2p_send_action_result result)
b22128ef
JM		 2946{
2947 enum p2p_pending_action_state state;
93b7ddd0 2948 int success;
b22128ef 2949
ed496f13 2950 p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
93b7ddd0 2951 " src=" MACSTR " bssid=" MACSTR " result=%d",
b22128ef 2952 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
93b7ddd0
JM		 2953 MAC2STR(bssid), result);
2954 success = result == P2P_SEND_ACTION_SUCCESS;
b22128ef
JM		 2955 state = p2p->pending_action_state;
2956 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2957 switch (state) {
2958 case P2P_NO_PENDING_ACTION:
63a965c3
JM		 2959 if (p2p->after_scan_tx_in_progress) {
2960 p2p->after_scan_tx_in_progress = 0;
2961 if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
2962 p2p_run_after_scan(p2p))
2963 break;
2964 if (p2p->state == P2P_SEARCH) {
ed496f13 2965 p2p_dbg(p2p, "Continue find after after_scan_tx completion");
63a965c3
JM		 2966 p2p_continue_find(p2p);
2967 }
2968 }
b22128ef
JM		 2969 break;
2970 case P2P_PENDING_GO_NEG_REQUEST:
2971 p2p_go_neg_req_cb(p2p, success);
2972 break;
2973 case P2P_PENDING_GO_NEG_RESPONSE:
2974 p2p_go_neg_resp_cb(p2p, success);
2975 break;
2976 case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
7800d45c 2977 p2p_go_neg_resp_failure_cb(p2p, success, dst);
b22128ef
JM		 2978 break;
2979 case P2P_PENDING_GO_NEG_CONFIRM:
93b7ddd0 2980 p2p_go_neg_conf_cb(p2p, result);
b22128ef
JM		 2981 break;
2982 case P2P_PENDING_SD:
2983 p2p_sd_cb(p2p, success);
2984 break;
2985 case P2P_PENDING_PD:
2986 p2p_prov_disc_cb(p2p, success);
2987 break;
2988 case P2P_PENDING_INVITATION_REQUEST:
2989 p2p_invitation_req_cb(p2p, success);
2990 break;
2991 case P2P_PENDING_INVITATION_RESPONSE:
2992 p2p_invitation_resp_cb(p2p, success);
2993 break;
2994 case P2P_PENDING_DEV_DISC_REQUEST:
2995 p2p_dev_disc_req_cb(p2p, success);
2996 break;
2997 case P2P_PENDING_DEV_DISC_RESPONSE:
2998 p2p_dev_disc_resp_cb(p2p, success);
2999 break;
3000 case P2P_PENDING_GO_DISC_REQ:
3001 p2p_go_disc_req_cb(p2p, success);
3002 break;
3003 }
63a965c3
JM		 3004
3005 p2p->after_scan_tx_in_progress = 0;
b22128ef
JM		 3006}
3007
3008
3009void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3010 unsigned int duration)
3011{
3012 if (freq == p2p->pending_client_disc_freq) {
ed496f13 3013 p2p_dbg(p2p, "Client discoverability remain-awake completed");
b22128ef
JM		 3014 p2p->pending_client_disc_freq = 0;
3015 return;
3016 }
3017
3018 if (freq != p2p->pending_listen_freq) {
ed496f13 3019 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
b22128ef
JM		 3020 freq, duration, p2p->pending_listen_freq);
3021 return;
3022 }
3023
ed496f13 3024 p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
b22128ef
JM		 3025 p2p->pending_listen_sec, p2p->pending_listen_usec,
3026 p2p->pending_listen_freq);
3027 p2p->in_listen = 1;
0b8889d8 3028 p2p->drv_in_listen = freq;
b22128ef
JM		 3029 if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3030 /*
3031 * Add 20 msec extra wait to avoid race condition with driver
3032 * remain-on-channel end event, i.e., give driver more time to
3033 * complete the operation before our timeout expires.
3034 */
3035 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3036 p2p->pending_listen_usec + 20000);
3037 }
3038
3039 p2p->pending_listen_freq = 0;
3040}
3041
3042
3043int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3044{
ed496f13 3045 p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
b22128ef
JM		 3046 p2p->drv_in_listen = 0;
3047 if (p2p->in_listen)
3048 return 0; /* Internal timeout will trigger the next step */
3049
3050 if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
e24cf97c 3051 if (p2p->go_neg_peer->connect_reqs >= 120) {
ed496f13 3052 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
e24cf97c
JM		 3053 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3054 return 0;
3055 }
3056
b22128ef
JM		 3057 p2p_set_state(p2p, P2P_CONNECT);
3058 p2p_connect_send(p2p, p2p->go_neg_peer);
3059 return 1;
3060 } else if (p2p->state == P2P_SEARCH) {
59acfe87
JM		 3061 if (p2p->p2p_scan_running) {
3062 /*
3063 * Search is already in progress. This can happen if
3064 * an Action frame RX is reported immediately after
3065 * the end of a remain-on-channel operation and the
3066 * response frame to that is sent using an offchannel
3067 * operation while in p2p_find. Avoid an attempt to
3068 * restart a scan here.
3069 */
ed496f13 3070 p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
59acfe87
JM		 3071 return 1;
3072 }
3fe8b68d
JM		 3073 if (p2p->pending_listen_freq) {
3074 /*
3075 * Better wait a bit if the driver is unable to start
3076 * offchannel operation for some reason. p2p_search()
3077 * will be started from internal timeout.
3078 */
ed496f13 3079 p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3fe8b68d
JM		 3080 p2p_set_timeout(p2p, 0, 100000);
3081 return 1;
3082 }
37448ede 3083 if (p2p->search_delay) {
ed496f13 3084 p2p_dbg(p2p, "Delay search operation by %u ms",
37448ede
JM		 3085 p2p->search_delay);
3086 p2p_set_timeout(p2p, p2p->search_delay / 1000,
3087 (p2p->search_delay % 1000) * 1000);
3088 return 1;
3089 }
b22128ef
JM		 3090 p2p_search(p2p);
3091 return 1;
3092 }
3093
3094 return 0;
3095}
3096
3097
3098static void p2p_timeout_connect(struct p2p_data *p2p)
3099{
3100 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
579a8098
JM		 3101 if (p2p->go_neg_peer &&
3102 (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
ed496f13 3103 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
579a8098
JM		 3104 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3105 return;
3106 }
fb8984fd
JM		 3107 if (p2p->go_neg_peer &&
3108 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3109 p2p->go_neg_peer->connect_reqs < 120) {
ed496f13 3110 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
fb8984fd
JM		 3111 p2p_connect_send(p2p, p2p->go_neg_peer);
3112 return;
3113 }
3114
b22128ef 3115 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
96beff11 3116 p2p_listen_in_find(p2p, 0);
b22128ef
JM		 3117}
3118
3119
3120static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3121{
3122 if (p2p->go_neg_peer) {
3123 if (p2p->drv_in_listen) {
ed496f13 3124 p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
b22128ef
JM		 3125 return;
3126 }
9dac8c3e
FM		 3127
3128 if (p2p->go_neg_peer->connect_reqs >= 120) {
ed496f13 3129 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
9dac8c3e
FM		 3130 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3131 return;
3132 }
3133
b22128ef
JM		 3134 p2p_set_state(p2p, P2P_CONNECT);
3135 p2p_connect_send(p2p, p2p->go_neg_peer);
3136 } else
3137 p2p_set_state(p2p, P2P_IDLE);
3138}
3139
3140
3141static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3142{
3143 /*
3144 * TODO: could remain constantly in Listen state for some time if there
3145 * are no other concurrent uses for the radio. For now, go to listen
3146 * state once per second to give other uses a chance to use the radio.
3147 */
3148 p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
d58ed4e3 3149 p2p_set_timeout(p2p, 0, 500000);
b22128ef
JM		 3150}
3151
3152
3153static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3154{
3155 struct p2p_device *dev = p2p->go_neg_peer;
3156
3157 if (dev == NULL) {
ed496f13 3158 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
b22128ef
JM		 3159 return;
3160 }
3161
3162 dev->wait_count++;
3163 if (dev->wait_count >= 120) {
ed496f13 3164 p2p_dbg(p2p, "Timeout on waiting peer to become ready for GO Negotiation");
b22128ef
JM		 3165 p2p_go_neg_failed(p2p, dev, -1);
3166 return;
3167 }
3168
ed496f13 3169 p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
b22128ef 3170 p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
96beff11 3171 p2p_listen_in_find(p2p, 0);
b22128ef
JM		 3172}
3173
3174
3175static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3176{
ed496f13 3177 p2p_dbg(p2p, "Service Discovery Query timeout");
b22128ef
JM		 3178 if (p2p->sd_peer) {
3179 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3180 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
3181 p2p->sd_peer = NULL;
3182 }
3183 p2p_continue_find(p2p);
3184}
3185
3186
3187static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3188{
ed496f13 3189 p2p_dbg(p2p, "Provision Discovery Request timeout");
b22128ef
JM		 3190 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3191 p2p_continue_find(p2p);
3192}
3193
3194
6b56cc2d
JS		 3195static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3196{
3197 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3198
3199 /*
3200 * For user initiated PD requests that we have not gotten any responses
3201 * for while in IDLE state, we retry them a couple of times before
3202 * giving up.
3203 */
3204 if (!p2p->user_initiated_pd)
3205 return;
3206
ed496f13 3207 p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
6b56cc2d
JS		 3208
3209 if (p2p->pd_retries) {
3210 p2p->pd_retries--;
3211 p2p_retry_pd(p2p);
3212 } else {
175171ac
JM		 3213 struct p2p_device *dev;
3214 int for_join = 0;
3215
3216 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3217 if (os_memcmp(p2p->pending_pd_devaddr,
3218 dev->info.p2p_device_addr, ETH_ALEN) != 0)
3219 continue;
3220 if (dev->req_config_methods &&
3221 (dev->flags & P2P_DEV_PD_FOR_JOIN))
3222 for_join = 1;
3223 }
3224
349b213c
JS		 3225 if (p2p->cfg->prov_disc_fail)
3226 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
3227 p2p->pending_pd_devaddr,
175171ac
JM		 3228 for_join ?
3229 P2P_PROV_DISC_TIMEOUT_JOIN :
349b213c 3230 P2P_PROV_DISC_TIMEOUT);
6b56cc2d
JS		 3231 p2p_reset_pending_pd(p2p);
3232 }
3233}
3234
3235
b22128ef
JM		 3236static void p2p_timeout_invite(struct p2p_data *p2p)
3237{
3238 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3239 p2p_set_state(p2p, P2P_INVITE_LISTEN);
04d8dad5
JM		 3240 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
3241 /*
3242 * Better remain on operating channel instead of listen channel
3243 * when running a group.
3244 */
ed496f13 3245 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
04d8dad5
JM		 3246 p2p_set_timeout(p2p, 0, 100000);
3247 return;
3248 }
96beff11 3249 p2p_listen_in_find(p2p, 0);
b22128ef
JM		 3250}
3251
3252
3253static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3254{
3255 if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3256 p2p_set_state(p2p, P2P_INVITE);
3257 p2p_invite_send(p2p, p2p->invite_peer,
3258 p2p->invite_go_dev_addr);
3259 } else {
3260 if (p2p->invite_peer) {
ed496f13 3261 p2p_dbg(p2p, "Invitation Request retry limit reached");
b22128ef
JM		 3262 if (p2p->cfg->invitation_result)
3263 p2p->cfg->invitation_result(
dbca75f8 3264 p2p->cfg->cb_ctx, -1, NULL, NULL,
dcd25d4c
VKE		 3265 p2p->invite_peer->info.p2p_device_addr,
3266 0);
b22128ef
JM		 3267 }
3268 p2p_set_state(p2p, P2P_IDLE);
3269 }
3270}
3271
3272
3273static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3274{
3275 struct p2p_data *p2p = eloop_ctx;
3276
ed496f13 3277 p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
b22128ef
JM		 3278
3279 p2p->in_listen = 0;
3280
3281 switch (p2p->state) {
3282 case P2P_IDLE:
6b56cc2d
JS		 3283 /* Check if we timed out waiting for PD req */
3284 if (p2p->pending_action_state == P2P_PENDING_PD)
3285 p2p_timeout_prov_disc_req(p2p);
b22128ef
JM		 3286 break;
3287 case P2P_SEARCH:
6b56cc2d
JS		 3288 /* Check if we timed out waiting for PD req */
3289 if (p2p->pending_action_state == P2P_PENDING_PD)
3290 p2p_timeout_prov_disc_req(p2p);
37448ede 3291 if (p2p->search_delay && !p2p->in_search_delay) {
ed496f13 3292 p2p_dbg(p2p, "Delay search operation by %u ms",
37448ede
JM		 3293 p2p->search_delay);
3294 p2p->in_search_delay = 1;
3295 p2p_set_timeout(p2p, p2p->search_delay / 1000,
3296 (p2p->search_delay % 1000) * 1000);
3297 break;
3298 }
3299 p2p->in_search_delay = 0;
b22128ef
JM		 3300 p2p_search(p2p);
3301 break;
3302 case P2P_CONNECT:
3303 p2p_timeout_connect(p2p);
3304 break;
3305 case P2P_CONNECT_LISTEN:
3306 p2p_timeout_connect_listen(p2p);
3307 break;
3308 case P2P_GO_NEG:
3309 break;
3310 case P2P_LISTEN_ONLY:
6b56cc2d
JS		 3311 /* Check if we timed out waiting for PD req */
3312 if (p2p->pending_action_state == P2P_PENDING_PD)
3313 p2p_timeout_prov_disc_req(p2p);
3314
b22128ef 3315 if (p2p->ext_listen_only) {
ed496f13 3316 p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
b22128ef
JM		 3317 p2p->ext_listen_only = 0;
3318 p2p_set_state(p2p, P2P_IDLE);
3319 }
3320 break;
3321 case P2P_WAIT_PEER_CONNECT:
3322 p2p_timeout_wait_peer_connect(p2p);
3323 break;
3324 case P2P_WAIT_PEER_IDLE:
3325 p2p_timeout_wait_peer_idle(p2p);
3326 break;
3327 case P2P_SD_DURING_FIND:
3328 p2p_timeout_sd_during_find(p2p);
3329 break;
3330 case P2P_PROVISIONING:
3331 break;
3332 case P2P_PD_DURING_FIND:
3333 p2p_timeout_prov_disc_during_find(p2p);
3334 break;
3335 case P2P_INVITE:
3336 p2p_timeout_invite(p2p);
3337 break;
3338 case P2P_INVITE_LISTEN:
3339 p2p_timeout_invite_listen(p2p);
3340 break;
3341 }
3342}
3343
3344
3345int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
3346{
3347 struct p2p_device *dev;
3348
3349 dev = p2p_get_device(p2p, peer_addr);
ed496f13
JM		 3350 p2p_dbg(p2p, "Local request to reject connection attempts by peer "
3351 MACSTR, MAC2STR(peer_addr));
b22128ef 3352 if (dev == NULL) {
ed496f13 3353 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
b22128ef
JM		 3354 return -1;
3355 }
3356 dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
3357 dev->flags |= P2P_DEV_USER_REJECTED;
3358 return 0;
3359}
3360
3361
e5a359cf 3362const char * p2p_wps_method_text(enum p2p_wps_method method)
b22128ef
JM		 3363{
3364 switch (method) {
3365 case WPS_NOT_READY:
3366 return "not-ready";
b22128ef
JM		 3367 case WPS_PIN_DISPLAY:
3368 return "Display";
3369 case WPS_PIN_KEYPAD:
3370 return "Keypad";
3371 case WPS_PBC:
3372 return "PBC";
3373 }
3374
3375 return "??";
3376}
3377
3378
3379static const char * p2p_go_state_text(enum p2p_go_state go_state)
3380{
3381 switch (go_state) {
3382 case UNKNOWN_GO:
3383 return "unknown";
3384 case LOCAL_GO:
3385 return "local";
3386 case REMOTE_GO:
3387 return "remote";
3388 }
3389
3390 return "??";
3391}
3392
3393
b3ffc80b
JM		 3394const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
3395 const u8 *addr, int next)
b22128ef
JM		 3396{
3397 struct p2p_device *dev;
b22128ef
JM		 3398
3399 if (addr)
3400 dev = p2p_get_device(p2p, addr);
3401 else
3402 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3403
3404 if (dev && next) {
3405 dev = dl_list_first(&dev->list, struct p2p_device, list);
3406 if (&dev->list == &p2p->devices)
3407 dev = NULL;
3408 }
3409
3410 if (dev == NULL)
b3ffc80b
JM		 3411 return NULL;
3412
3413 return &dev->info;
3414}
3415
3416
3417int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
3418 char *buf, size_t buflen)
3419{
3420 struct p2p_device *dev;
3421 int res;
3422 char *pos, *end;
acb69cec 3423 struct os_reltime now;
b3ffc80b
JM		 3424
3425 if (info == NULL)
b22128ef
JM		 3426 return -1;
3427
b3ffc80b
JM		 3428 dev = (struct p2p_device *) (((u8 *) info) -
3429 offsetof(struct p2p_device, info));
3430
b22128ef
JM		 3431 pos = buf;
3432 end = buf + buflen;
3433
acb69cec 3434 os_get_reltime(&now);
b22128ef
JM		 3435 res = os_snprintf(pos, end - pos,
3436 "age=%d\n"
3437 "listen_freq=%d\n"
b22128ef
JM		 3438 "wps_method=%s\n"
3439 "interface_addr=" MACSTR "\n"
3440 "member_in_go_dev=" MACSTR "\n"
3441 "member_in_go_iface=" MACSTR "\n"
b22128ef
JM		 3442 "go_neg_req_sent=%d\n"
3443 "go_state=%s\n"
3444 "dialog_token=%u\n"
3445 "intended_addr=" MACSTR "\n"
3446 "country=%c%c\n"
3447 "oper_freq=%d\n"
3448 "req_config_methods=0x%x\n"
10c4edde 3449 "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
b22128ef
JM		 3450 "status=%d\n"
3451 "wait_count=%u\n"
3452 "invitation_reqs=%u\n",
3453 (int) (now.sec - dev->last_seen.sec),
3454 dev->listen_freq,
b22128ef
JM		 3455 p2p_wps_method_text(dev->wps_method),
3456 MAC2STR(dev->interface_addr),
3457 MAC2STR(dev->member_in_go_dev),
3458 MAC2STR(dev->member_in_go_iface),
b22128ef
JM		 3459 dev->go_neg_req_sent,
3460 p2p_go_state_text(dev->go_state),
3461 dev->dialog_token,
3462 MAC2STR(dev->intended_addr),
3463 dev->country[0] ? dev->country[0] : '_',
3464 dev->country[1] ? dev->country[1] : '_',
3465 dev->oper_freq,
3466 dev->req_config_methods,
3467 dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
3468 "[PROBE_REQ_ONLY]" : "",
3469 dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
3470 dev->flags & P2P_DEV_NOT_YET_READY ?
3471 "[NOT_YET_READY]" : "",
3472 dev->flags & P2P_DEV_SD_INFO ? "[SD_INFO]" : "",
3473 dev->flags & P2P_DEV_SD_SCHEDULE ? "[SD_SCHEDULE]" :
3474 "",
3475 dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
3476 "[PD_PEER_DISPLAY]" : "",
3477 dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
3478 "[PD_PEER_KEYPAD]" : "",
3479 dev->flags & P2P_DEV_USER_REJECTED ?
3480 "[USER_REJECTED]" : "",
3481 dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
3482 "[PEER_WAITING_RESPONSE]" : "",
3483 dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
3484 "[PREFER_PERSISTENT_GROUP]" : "",
3485 dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
3486 "[WAIT_GO_NEG_RESPONSE]" : "",
3487 dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
3488 "[WAIT_GO_NEG_CONFIRM]" : "",
3489 dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
3490 "[GROUP_CLIENT_ONLY]" : "",
d5b20a73 3491 dev->flags & P2P_DEV_FORCE_FREQ ?
10c4edde
JM		 3492 "[FORCE_FREQ]" : "",
3493 dev->flags & P2P_DEV_PD_FOR_JOIN ?
3494 "[PD_FOR_JOIN]" : "",
b22128ef
JM		 3495 dev->status,
3496 dev->wait_count,
3497 dev->invitation_reqs);
3498 if (res < 0 || res >= end - pos)
3499 return pos - buf;
3500 pos += res;
3501
3502 if (dev->ext_listen_period) {
3503 res = os_snprintf(pos, end - pos,
3504 "ext_listen_period=%u\n"
3505 "ext_listen_interval=%u\n",
3506 dev->ext_listen_period,
3507 dev->ext_listen_interval);
3508 if (res < 0 || res >= end - pos)
3509 return pos - buf;
3510 pos += res;
3511 }
3512
3513 if (dev->oper_ssid_len) {
3514 res = os_snprintf(pos, end - pos,
3515 "oper_ssid=%s\n",
3516 wpa_ssid_txt(dev->oper_ssid,
3517 dev->oper_ssid_len));
3518 if (res < 0 || res >= end - pos)
3519 return pos - buf;
3520 pos += res;
3521 }
3522
9675ce35
JM		 3523#ifdef CONFIG_WIFI_DISPLAY
3524 if (dev->info.wfd_subelems) {
3525 res = os_snprintf(pos, end - pos, "wfd_subelems=");
3526 if (res < 0 || res >= end - pos)
3527 return pos - buf;
3528 pos += res;
3529
3530 pos += wpa_snprintf_hex(pos, end - pos,
3531 wpabuf_head(dev->info.wfd_subelems),
3532 wpabuf_len(dev->info.wfd_subelems));
3533
3534 res = os_snprintf(pos, end - pos, "\n");
3535 if (res < 0 || res >= end - pos)
3536 return pos - buf;
3537 pos += res;
3538 }
3539#endif /* CONFIG_WIFI_DISPLAY */
3540
b22128ef
JM		 3541 return pos - buf;
3542}
3543
3544
b3bcc0f5
JM		 3545int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
3546{
3547 return p2p_get_device(p2p, addr) != NULL;
3548}
3549
3550
b22128ef
JM		 3551void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
3552{
3553 if (enabled) {
ed496f13 3554 p2p_dbg(p2p, "Client discoverability enabled");
b22128ef
JM		 3555 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3556 } else {
ed496f13 3557 p2p_dbg(p2p, "Client discoverability disabled");
b22128ef
JM		 3558 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3559 }
3560}
3561
3562
3563static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
3564 u32 duration2, u32 interval2)
3565{
3566 struct wpabuf *req;
3567 struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
3568 u8 *len;
3569
3570 req = wpabuf_alloc(100);
3571 if (req == NULL)
3572 return NULL;
3573
3574 if (duration1 || interval1) {
3575 os_memset(&desc1, 0, sizeof(desc1));
3576 desc1.count_type = 1;
3577 desc1.duration = duration1;
3578 desc1.interval = interval1;
3579 ptr1 = &desc1;
3580
3581 if (duration2 || interval2) {
3582 os_memset(&desc2, 0, sizeof(desc2));
3583 desc2.count_type = 2;
3584 desc2.duration = duration2;
3585 desc2.interval = interval2;
3586 ptr2 = &desc2;
3587 }
3588 }
3589
3590 p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
3591 len = p2p_buf_add_ie_hdr(req);
3592 p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
3593 p2p_buf_update_ie_hdr(req, len);
3594
3595 return req;
3596}
3597
3598
3599int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
3600 const u8 *own_interface_addr, unsigned int freq,
3601 u32 duration1, u32 interval1, u32 duration2,
3602 u32 interval2)
3603{
3604 struct wpabuf *req;
3605
ed496f13
JM		 3606 p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
3607 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
3608 "dur2=%u int2=%u",
b22128ef
JM		 3609 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
3610 freq, duration1, interval1, duration2, interval2);
3611
3612 req = p2p_build_presence_req(duration1, interval1, duration2,
3613 interval2);
3614 if (req == NULL)
3615 return -1;
3616
3617 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3f9285ff
JM		 3618 if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
3619 go_interface_addr,
3620 wpabuf_head(req), wpabuf_len(req), 200) < 0) {
ed496f13 3621 p2p_dbg(p2p, "Failed to send Action frame");
b22128ef
JM		 3622 }
3623 wpabuf_free(req);
3624
3625 return 0;
3626}
3627
3628
3629static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
3630 size_t noa_len, u8 dialog_token)
3631{
3632 struct wpabuf *resp;
3633 u8 *len;
3634
3635 resp = wpabuf_alloc(100 + noa_len);
3636 if (resp == NULL)
3637 return NULL;
3638
3639 p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
3640 len = p2p_buf_add_ie_hdr(resp);
3641 p2p_buf_add_status(resp, status);
3642 if (noa) {
3643 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
3644 wpabuf_put_le16(resp, noa_len);
3645 wpabuf_put_data(resp, noa, noa_len);
3646 } else
3647 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
3648 p2p_buf_update_ie_hdr(resp, len);
3649
3650 return resp;
3651}
3652
3653
3654static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
3655 const u8 *sa, const u8 *data, size_t len,
3656 int rx_freq)
3657{
3658 struct p2p_message msg;
3659 u8 status;
3660 struct wpabuf *resp;
3661 size_t g;
3662 struct p2p_group *group = NULL;
3663 int parsed = 0;
3664 u8 noa[50];
3665 int noa_len;
3666
ed496f13 3667 p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
b22128ef
JM		 3668
3669 for (g = 0; g < p2p->num_groups; g++) {
3670 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
3671 ETH_ALEN) == 0) {
3672 group = p2p->groups[g];
3673 break;
3674 }
3675 }
3676 if (group == NULL) {
ed496f13 3677 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
b22128ef
JM		 3678 MACSTR, MAC2STR(da));
3679 return;
3680 }
3681
3682 if (p2p_parse(data, len, &msg) < 0) {
ed496f13 3683 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
b22128ef
JM		 3684 status = P2P_SC_FAIL_INVALID_PARAMS;
3685 goto fail;
3686 }
3687 parsed = 1;
3688
3689 if (msg.noa == NULL) {
ed496f13 3690 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
b22128ef
JM		 3691 status = P2P_SC_FAIL_INVALID_PARAMS;
3692 goto fail;
3693 }
3694
3695 status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
3696
3697fail:
3698 if (p2p->cfg->get_noa)
3699 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
3700 sizeof(noa));
3701 else
3702 noa_len = -1;
3703 resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
3704 noa_len > 0 ? noa_len : 0,
3705 msg.dialog_token);
3706 if (parsed)
3707 p2p_parse_free(&msg);
3708 if (resp == NULL)
3709 return;
3710
3711 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3f9285ff
JM		 3712 if (p2p_send_action(p2p, rx_freq, sa, da, da,
3713 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
ed496f13 3714 p2p_dbg(p2p, "Failed to send Action frame");
b22128ef
JM		 3715 }
3716 wpabuf_free(resp);
3717}
3718
3719
3720static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
3721 const u8 *sa, const u8 *data, size_t len)
3722{
3723 struct p2p_message msg;
3724
ed496f13 3725 p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
b22128ef
JM		 3726
3727 if (p2p_parse(data, len, &msg) < 0) {
ed496f13 3728 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
b22128ef
JM		 3729 return;
3730 }
3731
3732 if (msg.status == NULL || msg.noa == NULL) {
ed496f13 3733 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
b22128ef
JM		 3734 p2p_parse_free(&msg);
3735 return;
3736 }
3737
c64e3a08
JM		 3738 if (p2p->cfg->presence_resp) {
3739 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status,
3740 msg.noa, msg.noa_len);
3741 }
3742
b22128ef 3743 if (*msg.status) {
ed496f13 3744 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
b22128ef
JM		 3745 *msg.status);
3746 p2p_parse_free(&msg);
3747 return;
3748 }
3749
ed496f13 3750 p2p_dbg(p2p, "P2P Presence Request was accepted");
b22128ef
JM		 3751 wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
3752 msg.noa, msg.noa_len);
3753 /* TODO: process NoA */
3754 p2p_parse_free(&msg);
3755}
3756
3757
3758static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
3759{
3760 struct p2p_data *p2p = eloop_ctx;
3761
3762 if (p2p->ext_listen_interval) {
3763 /* Schedule next extended listen timeout */
3764 eloop_register_timeout(p2p->ext_listen_interval_sec,
3765 p2p->ext_listen_interval_usec,
3766 p2p_ext_listen_timeout, p2p, NULL);
3767 }
3768
f7a69057
JM		 3769 if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
3770 /*
3771 * This should not really happen, but it looks like the Listen
3772 * command may fail is something else (e.g., a scan) was
3773 * running at an inconvenient time. As a workaround, allow new
3774 * Extended Listen operation to be started.
3775 */
ed496f13 3776 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
f7a69057
JM		 3777 p2p->ext_listen_only = 0;
3778 p2p_set_state(p2p, P2P_IDLE);
3779 }
3780
b22128ef 3781 if (p2p->state != P2P_IDLE) {
ed496f13 3782 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
b22128ef
JM		 3783 return;
3784 }
3785
ed496f13 3786 p2p_dbg(p2p, "Extended Listen timeout");
b22128ef
JM		 3787 p2p->ext_listen_only = 1;
3788 if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
ed496f13 3789 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
b22128ef
JM		 3790 p2p->ext_listen_only = 0;
3791 }
3792}
3793
3794
3795int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
3796 unsigned int interval)
3797{
3798 if (period > 65535 || interval > 65535 || period > interval ||
3799 (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
ed496f13
JM		 3800 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
3801 period, interval);
b22128ef
JM		 3802 return -1;
3803 }
3804
3805 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
3806
3807 if (interval == 0) {
ed496f13 3808 p2p_dbg(p2p, "Disabling Extended Listen Timing");
b22128ef
JM		 3809 p2p->ext_listen_period = 0;
3810 p2p->ext_listen_interval = 0;
3811 return 0;
3812 }
3813
ed496f13
JM		 3814 p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
3815 period, interval);
b22128ef
JM		 3816 p2p->ext_listen_period = period;
3817 p2p->ext_listen_interval = interval;
3818 p2p->ext_listen_interval_sec = interval / 1000;
3819 p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
3820
3821 eloop_register_timeout(p2p->ext_listen_interval_sec,
3822 p2p->ext_listen_interval_usec,
3823 p2p_ext_listen_timeout, p2p, NULL);
3824
3825 return 0;
3826}
3827
3828
3829void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3830 const u8 *ie, size_t ie_len)
3831{
3832 struct p2p_message msg;
3833
3834 if (bssid == NULL || ie == NULL)
3835 return;
3836
3837 os_memset(&msg, 0, sizeof(msg));
3838 if (p2p_parse_ies(ie, ie_len, &msg))
3839 return;
3840 if (msg.minor_reason_code == NULL)
3841 return;
3842
ed496f13 3843 p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
b22128ef
JM		 3844 " reason_code=%u minor_reason_code=%u",
3845 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3846
3847 p2p_parse_free(&msg);
3848}
3849
3850
3851void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3852 const u8 *ie, size_t ie_len)
3853{
3854 struct p2p_message msg;
3855
3856 if (bssid == NULL || ie == NULL)
3857 return;
3858
3859 os_memset(&msg, 0, sizeof(msg));
3860 if (p2p_parse_ies(ie, ie_len, &msg))
3861 return;
3862 if (msg.minor_reason_code == NULL)
3863 return;
3864
ed496f13 3865 p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
b22128ef
JM		 3866 " reason_code=%u minor_reason_code=%u",
3867 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3868
3869 p2p_parse_free(&msg);
3870}
3871
3872
3873void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
3874{
3875 if (enabled) {
ed496f13 3876 p2p_dbg(p2p, "Managed P2P Device operations enabled");
b22128ef
JM		 3877 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
3878 } else {
ed496f13 3879 p2p_dbg(p2p, "Managed P2P Device operations disabled");
b22128ef
JM		 3880 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
3881 }
3882}
3883
3884
3885int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel)
3886{
9ccd9165 3887 if (p2p_channel_to_freq(reg_class, channel) < 0)
b22128ef
JM		 3888 return -1;
3889
ed496f13
JM		 3890 p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
3891 reg_class, channel);
b22128ef
JM		 3892 p2p->cfg->reg_class = reg_class;
3893 p2p->cfg->channel = channel;
3894
3895 return 0;
3896}
3897
3898
3899int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
3900{
ed496f13 3901 p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
b22128ef
JM		 3902 if (postfix == NULL) {
3903 p2p->cfg->ssid_postfix_len = 0;
3904 return 0;
3905 }
3906 if (len > sizeof(p2p->cfg->ssid_postfix))
3907 return -1;
3908 os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
3909 p2p->cfg->ssid_postfix_len = len;
3910 return 0;
3911}
3912
3913
2463ba70
JS		 3914int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
3915 int cfg_op_channel)
3916{
9ccd9165 3917 if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
2463ba70
JS		 3918 return -1;
3919
ed496f13
JM		 3920 p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
3921 op_reg_class, op_channel);
2463ba70
JS		 3922 p2p->cfg->op_reg_class = op_reg_class;
3923 p2p->cfg->op_channel = op_channel;
3924 p2p->cfg->cfg_op_channel = cfg_op_channel;
3925 return 0;
3926}
3927
3928
21d996f7
JM		 3929int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
3930 const struct p2p_channel *pref_chan)
3931{
3932 struct p2p_channel *n;
3933
3934 if (pref_chan) {
3935 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
3936 if (n == NULL)
3937 return -1;
3938 os_memcpy(n, pref_chan,
3939 num_pref_chan * sizeof(struct p2p_channel));
3940 } else
3941 n = NULL;
3942
3943 os_free(p2p->cfg->pref_chan);
3944 p2p->cfg->pref_chan = n;
3945 p2p->cfg->num_pref_chan = num_pref_chan;
3946
3947 return 0;
3948}
3949
3950
556b30da
JM		 3951int p2p_set_no_go_freq(struct p2p_data *p2p,
3952 const struct wpa_freq_range_list *list)
3953{
3954 struct wpa_freq_range *tmp;
3955
3956 if (list == NULL || list->num == 0) {
3957 os_free(p2p->no_go_freq.range);
3958 p2p->no_go_freq.range = NULL;
3959 p2p->no_go_freq.num = 0;
3960 return 0;
3961 }
3962
3963 tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
3964 if (tmp == NULL)
3965 return -1;
3966 os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
3967 os_free(p2p->no_go_freq.range);
3968 p2p->no_go_freq.range = tmp;
3969 p2p->no_go_freq.num = list->num;
3970 p2p_dbg(p2p, "Updated no GO chan list");
3971
3972 return 0;
3973}
3974
3975
b22128ef
JM		 3976int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
3977 u8 *iface_addr)
3978{
3979 struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
3980 if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
3981 return -1;
3982 os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
3983 return 0;
3984}
80c9582a
JM		 3985
3986
4147a2cc
JM		 3987int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
3988 u8 *dev_addr)
3989{
3990 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
3991 if (dev == NULL)
3992 return -1;
c5db8e51 3993 os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4147a2cc
JM		 3994 return 0;
3995}
3996
3997
80c9582a
JM		 3998void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
3999{
4000 os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4001 if (is_zero_ether_addr(p2p->peer_filter))
ed496f13 4002 p2p_dbg(p2p, "Disable peer filter");
80c9582a 4003 else
ed496f13
JM		 4004 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4005 MAC2STR(p2p->peer_filter));
80c9582a 4006}
72044390
JM		 4007
4008
4009void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4010{
ed496f13 4011 p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
72044390
JM		 4012 if (p2p->cross_connect == enabled)
4013 return;
4014 p2p->cross_connect = enabled;
4015 /* TODO: may need to tear down any action group where we are GO(?) */
4016}
f8d0131a
JM		 4017
4018
4019int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4020{
4021 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4022 if (dev == NULL)
4023 return -1;
4024 if (dev->oper_freq <= 0)
4025 return -1;
4026 return dev->oper_freq;
4027}
0f66abd2
SS		 4028
4029
4030void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4031{
ed496f13 4032 p2p_dbg(p2p, "Intra BSS distribution %s",
0f66abd2
SS		 4033 enabled ? "enabled" : "disabled");
4034 p2p->cfg->p2p_intra_bss = enabled;
4035}
b5c9da8d
JM		 4036
4037
51e9f228
JM		 4038void p2p_update_channel_list(struct p2p_data *p2p,
4039 const struct p2p_channels *chan,
4040 const struct p2p_channels *cli_chan)
b5c9da8d 4041{
ed496f13 4042 p2p_dbg(p2p, "Update channel list");
b5c9da8d 4043 os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
51e9f228
JM		 4044 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4045 os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4046 sizeof(struct p2p_channels));
4047 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
b5c9da8d 4048}
3f9285ff
JM		 4049
4050
4051int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4052 const u8 *src, const u8 *bssid, const u8 *buf,
4053 size_t len, unsigned int wait_time)
4054{
4055 if (p2p->p2p_scan_running) {
ed496f13 4056 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
3f9285ff 4057 if (p2p->after_scan_tx) {
ed496f13 4058 p2p_dbg(p2p, "Dropped previous pending Action frame TX");
3f9285ff
JM		 4059 os_free(p2p->after_scan_tx);
4060 }
4061 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4062 len);
4063 if (p2p->after_scan_tx == NULL)
4064 return -1;
4065 p2p->after_scan_tx->freq = freq;
4066 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4067 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4068 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4069 p2p->after_scan_tx->len = len;
4070 p2p->after_scan_tx->wait_time = wait_time;
4071 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4072 return 0;
4073 }
4074
4075 return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4076 buf, len, wait_time);
4077}
7cfc4ac3
AGS		 4078
4079
4080void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4081 int freq_overall)
4082{
ed496f13
JM		 4083 p2p_dbg(p2p, "Best channel: 2.4 GHz: %d, 5 GHz: %d, overall: %d",
4084 freq_24, freq_5, freq_overall);
7cfc4ac3
AGS		 4085 p2p->best_freq_24 = freq_24;
4086 p2p->best_freq_5 = freq_5;
4087 p2p->best_freq_overall = freq_overall;
4088}
231bbd03
SS		 4089
4090
6cb27aa8
JM		 4091void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4092{
ed496f13 4093 p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
6cb27aa8
JM		 4094 p2p->own_freq_preference = freq;
4095}
4096
4097
231bbd03
SS		 4098const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4099{
4100 if (p2p == NULL || p2p->go_neg_peer == NULL)
4101 return NULL;
c5db8e51 4102 return p2p->go_neg_peer->info.p2p_device_addr;
231bbd03 4103}
c165d81e
JB		 4104
4105
4106const struct p2p_peer_info *
4107p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4108{
4109 struct p2p_device *dev;
4110
4111 if (addr) {
4112 dev = p2p_get_device(p2p, addr);
4113 if (!dev)
4114 return NULL;
4115
4116 if (!next) {
4117 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4118 return NULL;
4119
4120 return &dev->info;
4121 } else {
4122 do {
4123 dev = dl_list_first(&dev->list,
4124 struct p2p_device,
4125 list);
4126 if (&dev->list == &p2p->devices)
4127 return NULL;
4128 } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4129 }
4130 } else {
4131 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4132 if (!dev)
4133 return NULL;
4134 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4135 dev = dl_list_first(&dev->list,
4136 struct p2p_device,
4137 list);
4138 if (&dev->list == &p2p->devices)
4139 return NULL;
4140 }
4141 }
4142
4143 return &dev->info;
4144}
303f60d3
JM		 4145
4146
4147int p2p_in_progress(struct p2p_data *p2p)
4148{
4149 if (p2p == NULL)
4150 return 0;
1b5d4714 4151 if (p2p->state == P2P_SEARCH)
99fcd404 4152 return 2;
fc6997b3 4153 return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
303f60d3 4154}
4f219667
JM		 4155
4156
4157void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
4158 u8 client_timeout)
4159{
4160 if (p2p) {
4161 p2p->go_timeout = go_timeout;
4162 p2p->client_timeout = client_timeout;
4163 }
4164}
99fcd404
JM		 4165
4166
9675ce35
JM		 4167#ifdef CONFIG_WIFI_DISPLAY
4168
4169static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
4170{
4171 size_t g;
4172 struct p2p_group *group;
4173
4174 for (g = 0; g < p2p->num_groups; g++) {
4175 group = p2p->groups[g];
3342c263 4176 p2p_group_force_beacon_update_ies(group);
9675ce35
JM		 4177 }
4178}
4179
4180
4181int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
4182{
4183 wpabuf_free(p2p->wfd_ie_beacon);
4184 p2p->wfd_ie_beacon = ie;
4185 p2p_update_wfd_ie_groups(p2p);
4186 return 0;
4187}
4188
4189
4190int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
4191{
4192 wpabuf_free(p2p->wfd_ie_probe_req);
4193 p2p->wfd_ie_probe_req = ie;
4194 return 0;
4195}
4196
4197
4198int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
4199{
4200 wpabuf_free(p2p->wfd_ie_probe_resp);
4201 p2p->wfd_ie_probe_resp = ie;
4202 p2p_update_wfd_ie_groups(p2p);
4203 return 0;
4204}
4205
4206
4207int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
4208{
4209 wpabuf_free(p2p->wfd_ie_assoc_req);
4210 p2p->wfd_ie_assoc_req = ie;
4211 return 0;
4212}
4213
4214
4215int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
4216{
4217 wpabuf_free(p2p->wfd_ie_invitation);
4218 p2p->wfd_ie_invitation = ie;
4219 return 0;
4220}
4221
4222
4223int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
4224{
4225 wpabuf_free(p2p->wfd_ie_prov_disc_req);
4226 p2p->wfd_ie_prov_disc_req = ie;
4227 return 0;
4228}
4229
4230
4231int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
4232{
4233 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
4234 p2p->wfd_ie_prov_disc_resp = ie;
4235 return 0;
4236}
4237
4238
4239int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
4240{
4241 wpabuf_free(p2p->wfd_ie_go_neg);
4242 p2p->wfd_ie_go_neg = ie;
4243 return 0;
4244}
4245
4246
4247int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
4248{
4249 wpabuf_free(p2p->wfd_dev_info);
4250 if (elem) {
4251 p2p->wfd_dev_info = wpabuf_dup(elem);
4252 if (p2p->wfd_dev_info == NULL)
4253 return -1;
4254 } else
4255 p2p->wfd_dev_info = NULL;
4256
4257 return 0;
4258}
4259
4260
4261int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
4262{
4263 wpabuf_free(p2p->wfd_assoc_bssid);
4264 if (elem) {
4265 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
4266 if (p2p->wfd_assoc_bssid == NULL)
4267 return -1;
4268 } else
4269 p2p->wfd_assoc_bssid = NULL;
4270
4271 return 0;
4272}
4273
4274
4275int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
4276 const struct wpabuf *elem)
4277{
4278 wpabuf_free(p2p->wfd_coupled_sink_info);
4279 if (elem) {
4280 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
4281 if (p2p->wfd_coupled_sink_info == NULL)
4282 return -1;
4283 } else
4284 p2p->wfd_coupled_sink_info = NULL;
4285
4286 return 0;
4287}
4288
4289#endif /* CONFIG_WIFI_DISPLAY */
96beff11
JM		 4290
4291
4292int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
4293 int max_disc_tu)
4294{
4295 if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
4296 return -1;
4297
4298 p2p->min_disc_int = min_disc_int;
4299 p2p->max_disc_int = max_disc_int;
4300 p2p->max_disc_tu = max_disc_tu;
ed496f13
JM		 4301 p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
4302 min_disc_int, max_disc_int, max_disc_tu);
96beff11
JM		 4303
4304 return 0;
4305}
ed496f13
JM		 4306
4307
4308void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
4309{
4310 va_list ap;
4311 char buf[500];
4312
4313 if (!p2p->cfg->debug_print)
4314 return;
4315
4316 va_start(ap, fmt);
4317 vsnprintf(buf, sizeof(buf), fmt, ap);
4318 buf[sizeof(buf) - 1] = '\0';
4319 va_end(ap);
4320 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
4321}
4322
4323
4324void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
4325{
4326 va_list ap;
4327 char buf[500];
4328
4329 if (!p2p->cfg->debug_print)
4330 return;
4331
4332 va_start(ap, fmt);
4333 vsnprintf(buf, sizeof(buf), fmt, ap);
4334 buf[sizeof(buf) - 1] = '\0';
4335 va_end(ap);
4336 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
4337}
4338
4339
4340void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
4341{
4342 va_list ap;
4343 char buf[500];
4344
4345 if (!p2p->cfg->debug_print)
4346 return;
4347
4348 va_start(ap, fmt);
4349 vsnprintf(buf, sizeof(buf), fmt, ap);
4350 buf[sizeof(buf) - 1] = '\0';
4351 va_end(ap);
4352 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
4353}
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