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P2P NFC: Copy DH parameters to a separate group interface
[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 */
dcdd3838
DS		 44#ifndef P2P_PEER_EXPIRATION_AGE
45#define P2P_PEER_EXPIRATION_AGE 60
46#endif /* P2P_PEER_EXPIRATION_AGE */
b22128ef
JM		 47
48#define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2)
49
50static void p2p_expire_peers(struct p2p_data *p2p)
51{
52 struct p2p_device *dev, *n;
acb69cec 53 struct os_reltime now;
1d277f02 54 size_t i;
b22128ef 55
acb69cec 56 os_get_reltime(&now);
b22128ef
JM		 57 dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
58 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec)
59 continue;
b1aebbc4 60
a691d99f
JJ		 61 if (dev == p2p->go_neg_peer) {
62 /*
63 * GO Negotiation is in progress with the peer, so
64 * don't expire the peer entry until GO Negotiation
65 * fails or times out.
66 */
67 continue;
68 }
69
b1aebbc4
JM		 70 if (p2p->cfg->go_connected &&
71 p2p->cfg->go_connected(p2p->cfg->cb_ctx,
72 dev->info.p2p_device_addr)) {
73 /*
74 * We are connected as a client to a group in which the
75 * peer is the GO, so do not expire the peer entry.
76 */
acb69cec 77 os_get_reltime(&dev->last_seen);
b1aebbc4
JM		 78 continue;
79 }
80
1d277f02
JM		 81 for (i = 0; i < p2p->num_groups; i++) {
82 if (p2p_group_is_client_connected(
83 p2p->groups[i], dev->info.p2p_device_addr))
84 break;
85 }
86 if (i < p2p->num_groups) {
87 /*
88 * The peer is connected as a client in a group where
89 * we are the GO, so do not expire the peer entry.
90 */
acb69cec 91 os_get_reltime(&dev->last_seen);
1d277f02
JM		 92 continue;
93 }
94
ed496f13
JM		 95 p2p_dbg(p2p, "Expiring old peer entry " MACSTR,
96 MAC2STR(dev->info.p2p_device_addr));
b22128ef
JM		 97 dl_list_del(&dev->list);
98 p2p_device_free(p2p, dev);
99 }
100}
101
102
103static void p2p_expiration_timeout(void *eloop_ctx, void *timeout_ctx)
104{
105 struct p2p_data *p2p = eloop_ctx;
106 p2p_expire_peers(p2p);
107 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
108 p2p_expiration_timeout, p2p, NULL);
109}
110
111
112static const char * p2p_state_txt(int state)
113{
114 switch (state) {
115 case P2P_IDLE:
116 return "IDLE";
117 case P2P_SEARCH:
118 return "SEARCH";
119 case P2P_CONNECT:
120 return "CONNECT";
121 case P2P_CONNECT_LISTEN:
122 return "CONNECT_LISTEN";
123 case P2P_GO_NEG:
124 return "GO_NEG";
125 case P2P_LISTEN_ONLY:
126 return "LISTEN_ONLY";
127 case P2P_WAIT_PEER_CONNECT:
128 return "WAIT_PEER_CONNECT";
129 case P2P_WAIT_PEER_IDLE:
130 return "WAIT_PEER_IDLE";
131 case P2P_SD_DURING_FIND:
132 return "SD_DURING_FIND";
133 case P2P_PROVISIONING:
134 return "PROVISIONING";
135 case P2P_PD_DURING_FIND:
136 return "PD_DURING_FIND";
137 case P2P_INVITE:
138 return "INVITE";
139 case P2P_INVITE_LISTEN:
140 return "INVITE_LISTEN";
141 default:
142 return "?";
143 }
144}
145
146
4c559019
JM		 147const char * p2p_get_state_txt(struct p2p_data *p2p)
148{
149 return p2p_state_txt(p2p->state);
150}
151
152
ec437d9e
JJ		 153u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr)
154{
155 struct p2p_device *dev = NULL;
156
157 if (!addr || !p2p)
158 return 0;
159
160 dev = p2p_get_device(p2p, addr);
161 if (dev)
162 return dev->wps_prov_info;
163 else
164 return 0;
165}
166
167
10531d21 168void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr)
ec437d9e
JJ		 169{
170 struct p2p_device *dev = NULL;
171
10531d21 172 if (!addr || !p2p)
ec437d9e
JJ		 173 return;
174
10531d21 175 dev = p2p_get_device(p2p, addr);
ec437d9e
JJ		 176 if (dev)
177 dev->wps_prov_info = 0;
178}
179
180
b22128ef
JM		 181void p2p_set_state(struct p2p_data *p2p, int new_state)
182{
ed496f13 183 p2p_dbg(p2p, "State %s -> %s",
b22128ef
JM		 184 p2p_state_txt(p2p->state), p2p_state_txt(new_state));
185 p2p->state = new_state;
186}
187
188
189void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
190{
ed496f13 191 p2p_dbg(p2p, "Set timeout (state=%s): %u.%06u sec",
b22128ef
JM		 192 p2p_state_txt(p2p->state), sec, usec);
193 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
194 eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
195}
196
197
198void p2p_clear_timeout(struct p2p_data *p2p)
199{
ed496f13 200 p2p_dbg(p2p, "Clear timeout (state=%s)", p2p_state_txt(p2p->state));
b22128ef
JM		 201 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
202}
203
204
205void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
206 int status)
207{
208 struct p2p_go_neg_results res;
209 p2p_clear_timeout(p2p);
210 p2p_set_state(p2p, P2P_IDLE);
fb8984fd
JM		 211 if (p2p->go_neg_peer) {
212 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
eb916eb8 213 p2p->go_neg_peer->wps_method = WPS_NOT_READY;
ab9e3442 214 p2p->go_neg_peer->oob_pw_id = 0;
fb8984fd 215 }
b22128ef
JM		 216 p2p->go_neg_peer = NULL;
217
218 os_memset(&res, 0, sizeof(res));
219 res.status = status;
220 if (peer) {
c5db8e51 221 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr,
b22128ef
JM		 222 ETH_ALEN);
223 os_memcpy(res.peer_interface_addr, peer->intended_addr,
224 ETH_ALEN);
225 }
226 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
227}
228
229
96beff11 230static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc)
b22128ef
JM		 231{
232 unsigned int r, tu;
233 int freq;
234 struct wpabuf *ies;
235
ed496f13 236 p2p_dbg(p2p, "Starting short listen state (state=%s)",
b22128ef
JM		 237 p2p_state_txt(p2p->state));
238
9ccd9165 239 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
b22128ef 240 if (freq < 0) {
ed496f13 241 p2p_dbg(p2p, "Unknown regulatory class/channel");
b22128ef
JM		 242 return;
243 }
244
245 os_get_random((u8 *) &r, sizeof(r));
246 tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
247 p2p->min_disc_int) * 100;
96beff11
JM		 248 if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu)
249 tu = p2p->max_disc_tu;
250 if (!dev_disc && tu < 100)
251 tu = 100; /* Need to wait in non-device discovery use cases */
252 if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen)
253 tu = p2p->cfg->max_listen * 1000 / 1024;
254
255 if (tu == 0) {
ed496f13 256 p2p_dbg(p2p, "Skip listen state since duration was 0 TU");
96beff11
JM		 257 p2p_set_timeout(p2p, 0, 0);
258 return;
259 }
b22128ef
JM		 260
261 p2p->pending_listen_freq = freq;
262 p2p->pending_listen_sec = 0;
263 p2p->pending_listen_usec = 1024 * tu;
264
265 ies = p2p_build_probe_resp_ies(p2p);
266 if (ies == NULL)
267 return;
268
269 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
270 ies) < 0) {
ed496f13 271 p2p_dbg(p2p, "Failed to start listen mode");
b22128ef
JM		 272 p2p->pending_listen_freq = 0;
273 }
274 wpabuf_free(ies);
275}
276
277
278int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
279{
280 int freq;
281 struct wpabuf *ies;
282
ed496f13 283 p2p_dbg(p2p, "Going to listen(only) state");
b22128ef 284
9ccd9165 285 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
b22128ef 286 if (freq < 0) {
ed496f13 287 p2p_dbg(p2p, "Unknown regulatory class/channel");
b22128ef
JM		 288 return -1;
289 }
290
291 p2p->pending_listen_freq = freq;
292 p2p->pending_listen_sec = timeout / 1000;
293 p2p->pending_listen_usec = (timeout % 1000) * 1000;
294
295 if (p2p->p2p_scan_running) {
5b9cecaf 296 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) {
ed496f13 297 p2p_dbg(p2p, "p2p_scan running - connect is already pending - skip listen");
d9bdba9f
JM		 298 return 0;
299 }
ed496f13 300 p2p_dbg(p2p, "p2p_scan running - delay start of listen state");
b22128ef
JM		 301 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
302 return 0;
303 }
304
305 ies = p2p_build_probe_resp_ies(p2p);
306 if (ies == NULL)
307 return -1;
308
309 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
ed496f13 310 p2p_dbg(p2p, "Failed to start listen mode");
b22128ef
JM		 311 p2p->pending_listen_freq = 0;
312 wpabuf_free(ies);
313 return -1;
314 }
315 wpabuf_free(ies);
316
317 p2p_set_state(p2p, P2P_LISTEN_ONLY);
318
319 return 0;
320}
321
322
323static void p2p_device_clear_reported(struct p2p_data *p2p)
324{
325 struct p2p_device *dev;
326 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list)
327 dev->flags &= ~P2P_DEV_REPORTED;
328}
329
330
331/**
332 * p2p_get_device - Fetch a peer entry
333 * @p2p: P2P module context from p2p_init()
334 * @addr: P2P Device Address of the peer
335 * Returns: Pointer to the device entry or %NULL if not found
336 */
337struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
338{
339 struct p2p_device *dev;
340 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
c5db8e51 341 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
b22128ef
JM		 342 return dev;
343 }
344 return NULL;
345}
346
347
348/**
349 * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
350 * @p2p: P2P module context from p2p_init()
351 * @addr: P2P Interface Address of the peer
352 * Returns: Pointer to the device entry or %NULL if not found
353 */
354struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
355 const u8 *addr)
356{
357 struct p2p_device *dev;
358 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
359 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
360 return dev;
361 }
362 return NULL;
363}
364
365
366/**
367 * p2p_create_device - Create a peer entry
368 * @p2p: P2P module context from p2p_init()
369 * @addr: P2P Device Address of the peer
370 * Returns: Pointer to the device entry or %NULL on failure
371 *
372 * If there is already an entry for the peer, it will be returned instead of
373 * creating a new one.
374 */
375static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
376 const u8 *addr)
377{
378 struct p2p_device *dev, *oldest = NULL;
379 size_t count = 0;
380
381 dev = p2p_get_device(p2p, addr);
382 if (dev)
383 return dev;
384
385 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
386 count++;
387 if (oldest == NULL ||
acb69cec 388 os_reltime_before(&dev->last_seen, &oldest->last_seen))
b22128ef
JM		 389 oldest = dev;
390 }
391 if (count + 1 > p2p->cfg->max_peers && oldest) {
ed496f13 392 p2p_dbg(p2p, "Remove oldest peer entry to make room for a new peer");
b22128ef
JM		 393 dl_list_del(&oldest->list);
394 p2p_device_free(p2p, oldest);
395 }
396
397 dev = os_zalloc(sizeof(*dev));
398 if (dev == NULL)
399 return NULL;
400 dl_list_add(&p2p->devices, &dev->list);
c5db8e51 401 os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
b22128ef
JM		 402
403 return dev;
404}
405
406
407static void p2p_copy_client_info(struct p2p_device *dev,
408 struct p2p_client_info *cli)
409{
c5db8e51
KRK		 410 os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len);
411 dev->info.device_name[cli->dev_name_len] = '\0';
412 dev->info.dev_capab = cli->dev_capab;
413 dev->info.config_methods = cli->config_methods;
414 os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
e57ae6e1
JMB		 415 dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
416 os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
417 dev->info.wps_sec_dev_type_list_len);
b22128ef
JM		 418}
419
420
421static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
422 const u8 *go_interface_addr, int freq,
423 const u8 *gi, size_t gi_len)
424{
425 struct p2p_group_info info;
426 size_t c;
427 struct p2p_device *dev;
428
429 if (gi == NULL)
430 return 0;
431
432 if (p2p_group_info_parse(gi, gi_len, &info) < 0)
433 return -1;
434
435 /*
436 * Clear old data for this group; if the devices are still in the
437 * group, the information will be restored in the loop following this.
438 */
439 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
b5472a45 440 if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
b22128ef
JM		 441 ETH_ALEN) == 0) {
442 os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
443 os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
444 }
445 }
446
447 for (c = 0; c < info.num_clients; c++) {
448 struct p2p_client_info *cli = &info.client[c];
2f0c8936
MK		 449 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
450 ETH_ALEN) == 0)
451 continue; /* ignore our own entry */
b22128ef
JM		 452 dev = p2p_get_device(p2p, cli->p2p_device_addr);
453 if (dev) {
b22128ef 454 if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
f33bc035
JM		 455 P2P_DEV_PROBE_REQ_ONLY)) {
456 /*
457 * Update information since we have not
458 * received this directly from the client.
459 */
b22128ef 460 p2p_copy_client_info(dev, cli);
f33bc035
JM		 461 } else {
462 /*
463 * Need to update P2P Client Discoverability
464 * flag since it is valid only in P2P Group
465 * Info attribute.
466 */
467 dev->info.dev_capab &=
468 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
469 dev->info.dev_capab |=
470 cli->dev_capab &
471 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
472 }
b22128ef
JM		 473 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
474 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
475 }
476 } else {
477 dev = p2p_create_device(p2p, cli->p2p_device_addr);
478 if (dev == NULL)
479 continue;
480 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
481 p2p_copy_client_info(dev, cli);
482 dev->oper_freq = freq;
c5db8e51
KRK		 483 p2p->cfg->dev_found(p2p->cfg->cb_ctx,
484 dev->info.p2p_device_addr,
8fd7dc1b
JB		 485 &dev->info, 1);
486 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
b22128ef
JM		 487 }
488
489 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
490 ETH_ALEN);
acb69cec 491 os_get_reltime(&dev->last_seen);
b22128ef
JM		 492 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
493 os_memcpy(dev->member_in_go_iface, go_interface_addr,
494 ETH_ALEN);
495 }
496
497 return 0;
498}
499
500
ed496f13
JM		 501static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev,
502 int probe_req, const struct p2p_message *msg)
b67d0d9e
JM		 503{
504 os_memcpy(dev->info.device_name, msg->device_name,
505 sizeof(dev->info.device_name));
506
507 if (msg->manufacturer &&
508 msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
509 os_memset(dev->info.manufacturer, 0,
510 sizeof(dev->info.manufacturer));
511 os_memcpy(dev->info.manufacturer, msg->manufacturer,
512 msg->manufacturer_len);
513 }
514
515 if (msg->model_name &&
516 msg->model_name_len < sizeof(dev->info.model_name)) {
517 os_memset(dev->info.model_name, 0,
518 sizeof(dev->info.model_name));
519 os_memcpy(dev->info.model_name, msg->model_name,
520 msg->model_name_len);
521 }
522
523 if (msg->model_number &&
524 msg->model_number_len < sizeof(dev->info.model_number)) {
525 os_memset(dev->info.model_number, 0,
526 sizeof(dev->info.model_number));
527 os_memcpy(dev->info.model_number, msg->model_number,
528 msg->model_number_len);
529 }
530
531 if (msg->serial_number &&
532 msg->serial_number_len < sizeof(dev->info.serial_number)) {
533 os_memset(dev->info.serial_number, 0,
534 sizeof(dev->info.serial_number));
535 os_memcpy(dev->info.serial_number, msg->serial_number,
536 msg->serial_number_len);
537 }
538
539 if (msg->pri_dev_type)
540 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
541 sizeof(dev->info.pri_dev_type));
542 else if (msg->wps_pri_dev_type)
543 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
544 sizeof(dev->info.pri_dev_type));
545
546 if (msg->wps_sec_dev_type_list) {
547 os_memcpy(dev->info.wps_sec_dev_type_list,
548 msg->wps_sec_dev_type_list,
549 msg->wps_sec_dev_type_list_len);
550 dev->info.wps_sec_dev_type_list_len =
551 msg->wps_sec_dev_type_list_len;
552 }
553
554 if (msg->capability) {
f33bc035
JM		 555 /*
556 * P2P Client Discoverability bit is reserved in all frames
557 * that use this function, so do not change its value here.
558 */
559 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
560 dev->info.dev_capab |= msg->capability[0] &
561 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
b67d0d9e
JM		 562 dev->info.group_capab = msg->capability[1];
563 }
564
565 if (msg->ext_listen_timing) {
566 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
567 dev->ext_listen_interval =
568 WPA_GET_LE16(msg->ext_listen_timing + 2);
569 }
570
571 if (!probe_req) {
954ee628
JM		 572 u16 new_config_methods;
573 new_config_methods = msg->config_methods ?
b67d0d9e 574 msg->config_methods : msg->wps_config_methods;
954ee628
JM		 575 if (new_config_methods &&
576 dev->info.config_methods != new_config_methods) {
ed496f13
JM		 577 p2p_dbg(p2p, "Update peer " MACSTR
578 " config_methods 0x%x -> 0x%x",
579 MAC2STR(dev->info.p2p_device_addr),
580 dev->info.config_methods,
581 new_config_methods);
954ee628
JM		 582 dev->info.config_methods = new_config_methods;
583 }
b67d0d9e
JM		 584 }
585}
586
587
b22128ef 588/**
c98b83f2 589 * p2p_add_device - Add peer entries based on scan results or P2P frames
b22128ef
JM		 590 * @p2p: P2P module context from p2p_init()
591 * @addr: Source address of Beacon or Probe Response frame (may be either
592 * P2P Device Address or P2P Interface Address)
593 * @level: Signal level (signal strength of the received frame from the peer)
594 * @freq: Frequency on which the Beacon or Probe Response frame was received
c5f10e80 595 * @rx_time: Time when the result was received
b22128ef
JM		 596 * @ies: IEs from the Beacon or Probe Response frame
597 * @ies_len: Length of ies buffer in octets
c98b83f2 598 * @scan_res: Whether this was based on scan results
b22128ef
JM		 599 * Returns: 0 on success, -1 on failure
600 *
601 * If the scan result is for a GO, the clients in the group will also be added
17bef1e9
AC		 602 * to the peer table. This function can also be used with some other frames
603 * like Provision Discovery Request that contains P2P Capability and P2P Device
604 * Info attributes.
b22128ef 605 */
3dfd0484 606int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
acb69cec 607 struct os_reltime *rx_time, int level, const u8 *ies,
3dfd0484 608 size_t ies_len, int scan_res)
b22128ef
JM		 609{
610 struct p2p_device *dev;
611 struct p2p_message msg;
612 const u8 *p2p_dev_addr;
6f2c0607 613 int i;
acb69cec 614 struct os_reltime time_now;
b22128ef
JM		 615
616 os_memset(&msg, 0, sizeof(msg));
617 if (p2p_parse_ies(ies, ies_len, &msg)) {
ed496f13 618 p2p_dbg(p2p, "Failed to parse P2P IE for a device entry");
b22128ef
JM		 619 p2p_parse_free(&msg);
620 return -1;
621 }
622
623 if (msg.p2p_device_addr)
624 p2p_dev_addr = msg.p2p_device_addr;
625 else if (msg.device_id)
626 p2p_dev_addr = msg.device_id;
627 else {
ed496f13 628 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
b22128ef
JM		 629 p2p_parse_free(&msg);
630 return -1;
631 }
632
80c9582a
JM		 633 if (!is_zero_ether_addr(p2p->peer_filter) &&
634 os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
ed496f13
JM		 635 p2p_dbg(p2p, "Do not add peer filter for " MACSTR
636 " due to peer filter", MAC2STR(p2p_dev_addr));
f96c1d76 637 p2p_parse_free(&msg);
80c9582a
JM		 638 return 0;
639 }
640
b22128ef
JM		 641 dev = p2p_create_device(p2p, p2p_dev_addr);
642 if (dev == NULL) {
643 p2p_parse_free(&msg);
644 return -1;
645 }
3dfd0484 646
c5f10e80 647 if (rx_time == NULL) {
acb69cec 648 os_get_reltime(&time_now);
c5f10e80
JM		 649 rx_time = &time_now;
650 }
3dfd0484
YD		 651
652 /*
653 * Update the device entry only if the new peer
654 * entry is newer than the one previously stored.
655 */
c5f10e80 656 if (dev->last_seen.sec > 0 &&
acb69cec 657 os_reltime_before(rx_time, &dev->last_seen)) {
ed496f13 658 p2p_dbg(p2p, "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u)",
c5f10e80
JM		 659 (unsigned int) rx_time->sec,
660 (unsigned int) rx_time->usec,
661 (unsigned int) dev->last_seen.sec,
662 (unsigned int) dev->last_seen.usec);
f96c1d76 663 p2p_parse_free(&msg);
3dfd0484 664 return -1;
f96c1d76 665 }
3dfd0484 666
acb69cec 667 os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
3dfd0484 668
b22128ef
JM		 669 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
670
671 if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
672 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
673 if (msg.ssid &&
674 (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
675 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
676 != 0)) {
677 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
678 dev->oper_ssid_len = msg.ssid[1];
679 }
680
681 if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
682 *msg.ds_params >= 1 && *msg.ds_params <= 14) {
683 int ds_freq;
684 if (*msg.ds_params == 14)
685 ds_freq = 2484;
686 else
687 ds_freq = 2407 + *msg.ds_params * 5;
688 if (freq != ds_freq) {
ed496f13 689 p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz",
b22128ef
JM		 690 freq, ds_freq);
691 freq = ds_freq;
692 }
693 }
694
c98b83f2 695 if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
ed496f13
JM		 696 p2p_dbg(p2p, "Update Listen frequency based on scan results ("
697 MACSTR " %d -> %d MHz (DS param %d)",
c5db8e51
KRK		 698 MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
699 freq, msg.ds_params ? *msg.ds_params : -1);
b22128ef 700 }
c98b83f2
JM		 701 if (scan_res) {
702 dev->listen_freq = freq;
703 if (msg.group_info)
704 dev->oper_freq = freq;
705 }
6402fc43 706 dev->info.level = level;
b22128ef 707
ed496f13 708 p2p_copy_wps_info(p2p, dev, 0, &msg);
e57ae6e1 709
10c5d2a5 710 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
6f2c0607
JMB		 711 wpabuf_free(dev->info.wps_vendor_ext[i]);
712 dev->info.wps_vendor_ext[i] = NULL;
713 }
714
10c5d2a5 715 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
6f2c0607
JMB		 716 if (msg.wps_vendor_ext[i] == NULL)
717 break;
718 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
719 msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
720 if (dev->info.wps_vendor_ext[i] == NULL)
721 break;
722 }
723
9675ce35
JM		 724 if (msg.wfd_subelems) {
725 wpabuf_free(dev->info.wfd_subelems);
726 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
727 }
728
c98b83f2
JM		 729 if (scan_res) {
730 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
731 msg.group_info, msg.group_info_len);
732 }
b22128ef
JM		 733
734 p2p_parse_free(&msg);
735
736 if (p2p_pending_sd_req(p2p, dev))
737 dev->flags |= P2P_DEV_SD_SCHEDULE;
738
739 if (dev->flags & P2P_DEV_REPORTED)
740 return 0;
741
ed496f13
JM		 742 p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)",
743 freq, (unsigned int) rx_time->sec,
c5f10e80 744 (unsigned int) rx_time->usec);
b22128ef 745 if (dev->flags & P2P_DEV_USER_REJECTED) {
ed496f13 746 p2p_dbg(p2p, "Do not report rejected device");
b22128ef
JM		 747 return 0;
748 }
8fd7dc1b 749
8b2b2a70
JM		 750 if (dev->info.config_methods == 0 &&
751 (freq == 2412 || freq == 2437 || freq == 2462)) {
752 /*
753 * If we have only seen a Beacon frame from a GO, we do not yet
754 * know what WPS config methods it supports. Since some
755 * applications use config_methods value from P2P-DEVICE-FOUND
756 * events, postpone reporting this peer until we've fully
757 * discovered its capabilities.
758 *
759 * At least for now, do this only if the peer was detected on
760 * one of the social channels since that peer can be easily be
761 * found again and there are no limitations of having to use
762 * passive scan on this channels, so this can be done through
763 * Probe Response frame that includes the config_methods
764 * information.
765 */
ed496f13
JM		 766 p2p_dbg(p2p, "Do not report peer " MACSTR
767 " with unknown config methods", MAC2STR(addr));
8b2b2a70
JM		 768 return 0;
769 }
770
8fd7dc1b
JB		 771 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
772 !(dev->flags & P2P_DEV_REPORTED_ONCE));
773 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
b22128ef
JM		 774
775 return 0;
776}
777
778
779static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
780{
6f2c0607
JMB		 781 int i;
782
5cfda25e
JJ		 783 if (p2p->go_neg_peer == dev) {
784 /*
785 * If GO Negotiation is in progress, report that it has failed.
786 */
787 p2p_go_neg_failed(p2p, dev, -1);
b22128ef 788 p2p->go_neg_peer = NULL;
5cfda25e 789 }
b22128ef
JM		 790 if (p2p->invite_peer == dev)
791 p2p->invite_peer = NULL;
792 if (p2p->sd_peer == dev)
793 p2p->sd_peer = NULL;
794 if (p2p->pending_client_disc_go == dev)
795 p2p->pending_client_disc_go = NULL;
796
f5fc6032
AC		 797 /* dev_lost() device, but only if it was previously dev_found() */
798 if (dev->flags & P2P_DEV_REPORTED_ONCE)
799 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
800 dev->info.p2p_device_addr);
56eeb8f2 801
10c5d2a5 802 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
6f2c0607
JMB		 803 wpabuf_free(dev->info.wps_vendor_ext[i]);
804 dev->info.wps_vendor_ext[i] = NULL;
805 }
806
9675ce35
JM		 807 wpabuf_free(dev->info.wfd_subelems);
808
b22128ef
JM		 809 os_free(dev);
810}
811
812
813static int p2p_get_next_prog_freq(struct p2p_data *p2p)
814{
815 struct p2p_channels *c;
816 struct p2p_reg_class *cla;
817 size_t cl, ch;
818 int found = 0;
819 u8 reg_class;
820 u8 channel;
821 int freq;
822
823 c = &p2p->cfg->channels;
824 for (cl = 0; cl < c->reg_classes; cl++) {
825 cla = &c->reg_class[cl];
826 if (cla->reg_class != p2p->last_prog_scan_class)
827 continue;
828 for (ch = 0; ch < cla->channels; ch++) {
829 if (cla->channel[ch] == p2p->last_prog_scan_chan) {
830 found = 1;
831 break;
832 }
833 }
834 if (found)
835 break;
836 }
837
838 if (!found) {
839 /* Start from beginning */
840 reg_class = c->reg_class[0].reg_class;
841 channel = c->reg_class[0].channel[0];
842 } else {
843 /* Pick the next channel */
844 ch++;
845 if (ch == cla->channels) {
846 cl++;
847 if (cl == c->reg_classes)
848 cl = 0;
849 ch = 0;
850 }
851 reg_class = c->reg_class[cl].reg_class;
852 channel = c->reg_class[cl].channel[ch];
853 }
854
9ccd9165 855 freq = p2p_channel_to_freq(reg_class, channel);
ed496f13 856 p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz",
b22128ef
JM		 857 reg_class, channel, freq);
858 p2p->last_prog_scan_class = reg_class;
859 p2p->last_prog_scan_chan = channel;
860
861 if (freq == 2412 || freq == 2437 || freq == 2462)
862 return 0; /* No need to add social channels */
863 return freq;
864}
865
866
867static void p2p_search(struct p2p_data *p2p)
868{
869 int freq = 0;
870 enum p2p_scan_type type;
360182ed 871 u16 pw_id = DEV_PW_DEFAULT;
99fcd404 872 int res;
b22128ef
JM		 873
874 if (p2p->drv_in_listen) {
ed496f13 875 p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing");
b22128ef
JM		 876 return;
877 }
878 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
879
e6ecfc4f
JB		 880 if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
881 (freq = p2p_get_next_prog_freq(p2p)) > 0) {
b22128ef 882 type = P2P_SCAN_SOCIAL_PLUS_ONE;
ed496f13 883 p2p_dbg(p2p, "Starting search (+ freq %u)", freq);
b22128ef
JM		 884 } else {
885 type = P2P_SCAN_SOCIAL;
ed496f13 886 p2p_dbg(p2p, "Starting search");
b22128ef
JM		 887 }
888
99fcd404
JM		 889 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
890 p2p->num_req_dev_types, p2p->req_dev_types,
891 p2p->find_dev_id, pw_id);
892 if (res < 0) {
ed496f13 893 p2p_dbg(p2p, "Scan request failed");
b22128ef 894 p2p_continue_find(p2p);
40c03fd4 895 } else {
ed496f13 896 p2p_dbg(p2p, "Running p2p_scan");
40c03fd4
JM		 897 p2p->p2p_scan_running = 1;
898 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
899 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
900 p2p, NULL);
b22128ef
JM		 901 }
902}
903
904
905static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
906{
907 struct p2p_data *p2p = eloop_ctx;
ed496f13 908 p2p_dbg(p2p, "Find timeout -> stop");
b22128ef
JM		 909 p2p_stop_find(p2p);
910}
911
912
913static int p2p_run_after_scan(struct p2p_data *p2p)
914{
915 struct p2p_device *dev;
916 enum p2p_after_scan op;
917
3f9285ff 918 if (p2p->after_scan_tx) {
63a965c3 919 p2p->after_scan_tx_in_progress = 1;
ed496f13 920 p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion");
46eeedac
JM		 921 p2p->cfg->send_action(p2p->cfg->cb_ctx,
922 p2p->after_scan_tx->freq,
923 p2p->after_scan_tx->dst,
924 p2p->after_scan_tx->src,
925 p2p->after_scan_tx->bssid,
926 (u8 *) (p2p->after_scan_tx + 1),
927 p2p->after_scan_tx->len,
928 p2p->after_scan_tx->wait_time);
3f9285ff
JM		 929 os_free(p2p->after_scan_tx);
930 p2p->after_scan_tx = NULL;
931 return 1;
932 }
933
b22128ef
JM		 934 op = p2p->start_after_scan;
935 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
936 switch (op) {
937 case P2P_AFTER_SCAN_NOTHING:
938 break;
939 case P2P_AFTER_SCAN_LISTEN:
ed496f13 940 p2p_dbg(p2p, "Start previously requested Listen state");
b22128ef
JM		 941 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
942 p2p->pending_listen_usec / 1000);
943 return 1;
944 case P2P_AFTER_SCAN_CONNECT:
ed496f13 945 p2p_dbg(p2p, "Start previously requested connect with " MACSTR,
b22128ef
JM		 946 MAC2STR(p2p->after_scan_peer));
947 dev = p2p_get_device(p2p, p2p->after_scan_peer);
948 if (dev == NULL) {
ed496f13 949 p2p_dbg(p2p, "Peer not known anymore");
b22128ef
JM		 950 break;
951 }
952 p2p_connect_send(p2p, dev);
953 return 1;
954 }
955
956 return 0;
957}
958
959
b22128ef
JM		 960static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
961{
962 struct p2p_data *p2p = eloop_ctx;
963 int running;
ed496f13 964 p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running);
b22128ef
JM		 965 running = p2p->p2p_scan_running;
966 /* Make sure we recover from missed scan results callback */
967 p2p->p2p_scan_running = 0;
968
969 if (running)
970 p2p_run_after_scan(p2p);
971}
972
973
046ef4aa
JMB		 974static void p2p_free_req_dev_types(struct p2p_data *p2p)
975{
976 p2p->num_req_dev_types = 0;
977 os_free(p2p->req_dev_types);
978 p2p->req_dev_types = NULL;
979}
980
981
b22128ef 982int p2p_find(struct p2p_data *p2p, unsigned int timeout,
046ef4aa 983 enum p2p_discovery_type type,
6d92fa6e 984 unsigned int num_req_dev_types, const u8 *req_dev_types,
37448ede 985 const u8 *dev_id, unsigned int search_delay)
b22128ef
JM		 986{
987 int res;
988
ed496f13 989 p2p_dbg(p2p, "Starting find (type=%d)", type);
acb69cec 990 os_get_reltime(&p2p->find_start);
b22128ef 991 if (p2p->p2p_scan_running) {
ed496f13 992 p2p_dbg(p2p, "p2p_scan is already running");
b22128ef 993 }
046ef4aa
JMB		 994
995 p2p_free_req_dev_types(p2p);
996 if (req_dev_types && num_req_dev_types) {
997 p2p->req_dev_types = os_malloc(num_req_dev_types *
998 WPS_DEV_TYPE_LEN);
999 if (p2p->req_dev_types == NULL)
1000 return -1;
1001 os_memcpy(p2p->req_dev_types, req_dev_types,
1002 num_req_dev_types * WPS_DEV_TYPE_LEN);
1003 p2p->num_req_dev_types = num_req_dev_types;
1004 }
1005
6d92fa6e
JM		 1006 if (dev_id) {
1007 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
1008 p2p->find_dev_id = p2p->find_dev_id_buf;
1009 } else
1010 p2p->find_dev_id = NULL;
1011
b22128ef
JM		 1012 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1013 p2p_clear_timeout(p2p);
1014 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1015 p2p->find_type = type;
1016 p2p_device_clear_reported(p2p);
1017 p2p_set_state(p2p, P2P_SEARCH);
37448ede
JM		 1018 p2p->search_delay = search_delay;
1019 p2p->in_search_delay = 0;
b22128ef 1020 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
39185dfa 1021 p2p->last_p2p_find_timeout = timeout;
b22128ef
JM		 1022 if (timeout)
1023 eloop_register_timeout(timeout, 0, p2p_find_timeout,
1024 p2p, NULL);
1025 switch (type) {
1026 case P2P_FIND_START_WITH_FULL:
1027 case P2P_FIND_PROGRESSIVE:
046ef4aa
JMB		 1028 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1029 p2p->num_req_dev_types,
360182ed
JM		 1030 p2p->req_dev_types, dev_id,
1031 DEV_PW_DEFAULT);
b22128ef
JM		 1032 break;
1033 case P2P_FIND_ONLY_SOCIAL:
046ef4aa
JMB		 1034 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1035 p2p->num_req_dev_types,
360182ed
JM		 1036 p2p->req_dev_types, dev_id,
1037 DEV_PW_DEFAULT);
b22128ef
JM		 1038 break;
1039 default:
1040 return -1;
1041 }
1042
1043 if (res == 0) {
ed496f13 1044 p2p_dbg(p2p, "Running p2p_scan");
b22128ef
JM		 1045 p2p->p2p_scan_running = 1;
1046 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1047 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1048 p2p, NULL);
1b5d4714
JM		 1049 } else if (p2p->p2p_scan_running) {
1050 p2p_dbg(p2p, "Failed to start p2p_scan - another p2p_scan was already running");
1051 /* wait for the previous p2p_scan to complete */
b22128ef 1052 } else {
ed496f13 1053 p2p_dbg(p2p, "Failed to start p2p_scan");
0c96fd6d
JM		 1054 p2p_set_state(p2p, P2P_IDLE);
1055 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
b22128ef
JM		 1056 }
1057
1058 return res;
1059}
1060
1061
0b8889d8 1062void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
b22128ef 1063{
ed496f13 1064 p2p_dbg(p2p, "Stopping find");
b22128ef
JM		 1065 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1066 p2p_clear_timeout(p2p);
1b5d4714 1067 if (p2p->state == P2P_SEARCH)
710ae9ac 1068 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
b22128ef 1069 p2p_set_state(p2p, P2P_IDLE);
046ef4aa 1070 p2p_free_req_dev_types(p2p);
b22128ef 1071 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
3a2a7c3d 1072 if (p2p->go_neg_peer)
fb8984fd 1073 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
b22128ef
JM		 1074 p2p->go_neg_peer = NULL;
1075 p2p->sd_peer = NULL;
1076 p2p->invite_peer = NULL;
1a9c618d
JM		 1077 p2p_stop_listen_for_freq(p2p, freq);
1078}
1079
1080
1081void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1082{
0b8889d8 1083 if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
ed496f13 1084 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response");
0b8889d8
JM		 1085 return;
1086 }
1a9c618d
JM		 1087 if (p2p->in_listen) {
1088 p2p->in_listen = 0;
1089 p2p_clear_timeout(p2p);
1090 }
54b8f994
JM		 1091 if (p2p->drv_in_listen) {
1092 /*
1093 * The driver may not deliver callback to p2p_listen_end()
1094 * when the operation gets canceled, so clear the internal
1095 * variable that is tracking driver state.
1096 */
ed496f13 1097 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen);
54b8f994
JM		 1098 p2p->drv_in_listen = 0;
1099 }
b22128ef
JM		 1100 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1101}
1102
1103
0b5fb86a
SADR		 1104void p2p_stop_listen(struct p2p_data *p2p)
1105{
1106 if (p2p->state != P2P_LISTEN_ONLY) {
1107 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state.");
1108 return;
1109 }
1110
1111 p2p_stop_listen_for_freq(p2p, 0);
1112 p2p_set_state(p2p, P2P_IDLE);
1113}
1114
1115
0b8889d8
JM		 1116void p2p_stop_find(struct p2p_data *p2p)
1117{
1118 p2p_stop_find_for_freq(p2p, 0);
1119}
1120
1121
e28c226d
JM		 1122static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1123 unsigned int force_freq,
51e9f228 1124 unsigned int pref_freq, int go)
e28c226d
JM		 1125{
1126 u8 op_class, op_channel;
1127 unsigned int freq = force_freq ? force_freq : pref_freq;
1128
51e9f228
JM		 1129 p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d",
1130 force_freq, pref_freq, go);
9ccd9165 1131 if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) {
ed496f13 1132 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq);
e28c226d
JM		 1133 return -1;
1134 }
1135
51e9f228
JM		 1136 if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) &&
1137 (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class,
1138 op_channel))) {
ed496f13
JM		 1139 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P",
1140 freq, op_class, op_channel);
e28c226d
JM		 1141 return -1;
1142 }
1143
1144 p2p->op_reg_class = op_class;
1145 p2p->op_channel = op_channel;
1146
1147 if (force_freq) {
1148 p2p->channels.reg_classes = 1;
1149 p2p->channels.reg_class[0].channels = 1;
1150 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1151 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1152 } else {
1153 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1154 sizeof(struct p2p_channels));
1155 }
1156
1157 return 0;
1158}
1159
1160
1161static void p2p_prepare_channel_best(struct p2p_data *p2p)
1162{
1163 u8 op_class, op_channel;
00043740
JM		 1164 const int op_classes_5ghz[] = { 124, 115, 0 };
1165 const int op_classes_ht40[] = { 126, 127, 116, 117, 0 };
384bdd02 1166 const int op_classes_vht[] = { 128, 0 };
e28c226d 1167
99d7c762
JM		 1168 p2p_dbg(p2p, "Prepare channel best");
1169
e28c226d
JM		 1170 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1171 p2p_supported_freq(p2p, p2p->best_freq_overall) &&
9ccd9165
JM		 1172 p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1173 == 0) {
ed496f13 1174 p2p_dbg(p2p, "Select best overall channel as operating channel preference");
e28c226d
JM		 1175 p2p->op_reg_class = op_class;
1176 p2p->op_channel = op_channel;
1177 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1178 p2p_supported_freq(p2p, p2p->best_freq_5) &&
9ccd9165
JM		 1179 p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1180 == 0) {
ed496f13 1181 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
e28c226d
JM		 1182 p2p->op_reg_class = op_class;
1183 p2p->op_channel = op_channel;
1184 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1185 p2p_supported_freq(p2p, p2p->best_freq_24) &&
9ccd9165
JM		 1186 p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1187 &op_channel) == 0) {
ed496f13 1188 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
e28c226d
JM		 1189 p2p->op_reg_class = op_class;
1190 p2p->op_channel = op_channel;
6701fdc3
JM		 1191 } else if (p2p->cfg->num_pref_chan > 0 &&
1192 p2p_channels_includes(&p2p->cfg->channels,
1193 p2p->cfg->pref_chan[0].op_class,
1194 p2p->cfg->pref_chan[0].chan)) {
1195 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference");
1196 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class;
1197 p2p->op_channel = p2p->cfg->pref_chan[0].chan;
384bdd02
JM		 1198 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht,
1199 &p2p->op_reg_class, &p2p->op_channel) ==
1200 0) {
1201 p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference",
1202 p2p->op_reg_class, p2p->op_channel);
a30d50b3
JM		 1203 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40,
1204 &p2p->op_reg_class, &p2p->op_channel) ==
1205 0) {
1206 p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference",
1207 p2p->op_reg_class, p2p->op_channel);
f2407107
JM		 1208 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz,
1209 &p2p->op_reg_class, &p2p->op_channel) ==
1210 0) {
1211 p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference",
1212 p2p->op_reg_class, p2p->op_channel);
e28c226d 1213 } else {
99d7c762 1214 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference");
e28c226d
JM		 1215 p2p->op_reg_class = p2p->cfg->op_reg_class;
1216 p2p->op_channel = p2p->cfg->op_channel;
1217 }
1218
1219 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1220 sizeof(struct p2p_channels));
1221}
1222
1223
a5830ede
JM		 1224/**
1225 * p2p_prepare_channel - Select operating channel for GO Negotiation
1226 * @p2p: P2P module context from p2p_init()
1227 * @dev: Selected peer device
1228 * @force_freq: Forced frequency in MHz or 0 if not forced
1229 * @pref_freq: Preferred frequency in MHz or 0 if no preference
51e9f228 1230 * @go: Whether the local end will be forced to be GO
a5830ede
JM		 1231 * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1232 *
1233 * This function is used to do initial operating channel selection for GO
1234 * Negotiation prior to having received peer information. The selected channel
1235 * may be further optimized in p2p_reselect_channel() once the peer information
1236 * is available.
1237 */
79879f4a 1238int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
51e9f228 1239 unsigned int force_freq, unsigned int pref_freq, int go)
b22128ef 1240{
51e9f228
JM		 1241 p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d",
1242 force_freq, pref_freq, go);
04a3e69d 1243 if (force_freq || pref_freq) {
51e9f228
JM		 1244 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) <
1245 0)
1e19f734 1246 return -1;
b22128ef 1247 } else {
e28c226d 1248 p2p_prepare_channel_best(p2p);
b22128ef 1249 }
51e9f228
JM		 1250 p2p_channels_dump(p2p, "prepared channels", &p2p->channels);
1251 if (go)
1252 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq);
1253 else if (!force_freq)
1254 p2p_channels_union(&p2p->channels, &p2p->cfg->cli_channels,
1255 &p2p->channels);
1256 p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels);
1257
ed496f13 1258 p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
b22128ef
JM		 1259 p2p->op_reg_class, p2p->op_channel,
1260 force_freq ? " (forced)" : "");
1261
92ac756c
JM		 1262 if (force_freq)
1263 dev->flags |= P2P_DEV_FORCE_FREQ;
1264 else
1265 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1266
7861cb08
JM		 1267 return 0;
1268}
1269
1270
acc247b2
JM		 1271static void p2p_set_dev_persistent(struct p2p_device *dev,
1272 int persistent_group)
1273{
1274 switch (persistent_group) {
1275 case 0:
1276 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1277 P2P_DEV_PREFER_PERSISTENT_RECONN);
1278 break;
1279 case 1:
1280 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1281 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1282 break;
1283 case 2:
1284 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1285 P2P_DEV_PREFER_PERSISTENT_RECONN;
1286 break;
1287 }
1288}
1289
1290
7861cb08
JM		 1291int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1292 enum p2p_wps_method wps_method,
1293 int go_intent, const u8 *own_interface_addr,
23c84252 1294 unsigned int force_freq, int persistent_group,
3bc462cb 1295 const u8 *force_ssid, size_t force_ssid_len,
ab9e3442 1296 int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id)
7861cb08
JM		 1297{
1298 struct p2p_device *dev;
1299
ed496f13 1300 p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
7861cb08 1301 " GO Intent=%d Intended Interface Address=" MACSTR
ab9e3442
JM		 1302 " wps_method=%d persistent_group=%d pd_before_go_neg=%d "
1303 "oob_pw_id=%u",
7861cb08 1304 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
ab9e3442 1305 wps_method, persistent_group, pd_before_go_neg, oob_pw_id);
7861cb08 1306
b22128ef
JM		 1307 dev = p2p_get_device(p2p, peer_addr);
1308 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
ed496f13 1309 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
b22128ef
JM		 1310 MAC2STR(peer_addr));
1311 return -1;
1312 }
1313
51e9f228
JM		 1314 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq,
1315 go_intent == 15) < 0)
92ac756c
JM		 1316 return -1;
1317
b22128ef 1318 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
c5db8e51
KRK		 1319 if (!(dev->info.dev_capab &
1320 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
ed496f13 1321 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
b22128ef
JM		 1322 " that is in a group and is not discoverable",
1323 MAC2STR(peer_addr));
1324 return -1;
1325 }
1326 if (dev->oper_freq <= 0) {
ed496f13 1327 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
b22128ef
JM		 1328 " with incomplete information",
1329 MAC2STR(peer_addr));
1330 return -1;
1331 }
1332
1333 /*
1334 * First, try to connect directly. If the peer does not
1335 * acknowledge frames, assume it is sleeping and use device
1336 * discoverability via the GO at that point.
1337 */
1338 }
1339
23c84252
JM		 1340 p2p->ssid_set = 0;
1341 if (force_ssid) {
1342 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1343 force_ssid, force_ssid_len);
1344 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1345 p2p->ssid_len = force_ssid_len;
1346 p2p->ssid_set = 1;
1347 }
1348
b22128ef
JM		 1349 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1350 dev->flags &= ~P2P_DEV_USER_REJECTED;
1351 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1352 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
3bc462cb
JM		 1353 if (pd_before_go_neg)
1354 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
624b4d5a 1355 else {
3bc462cb 1356 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
624b4d5a 1357 /*
003c4580
JM		 1358 * Assign dialog token and tie breaker here to use the same
1359 * values in each retry within the same GO Negotiation exchange.
624b4d5a
SD		 1360 */
1361 dev->dialog_token++;
1362 if (dev->dialog_token == 0)
1363 dev->dialog_token = 1;
003c4580
JM		 1364 dev->tie_breaker = p2p->next_tie_breaker;
1365 p2p->next_tie_breaker = !p2p->next_tie_breaker;
624b4d5a 1366 }
9dac8c3e 1367 dev->connect_reqs = 0;
b22128ef
JM		 1368 dev->go_neg_req_sent = 0;
1369 dev->go_state = UNKNOWN_GO;
acc247b2 1370 p2p_set_dev_persistent(dev, persistent_group);
b22128ef
JM		 1371 p2p->go_intent = go_intent;
1372 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1373
1374 if (p2p->state != P2P_IDLE)
1375 p2p_stop_find(p2p);
1376
f44ae207
JM		 1377 if (p2p->after_scan_tx) {
1378 /*
1379 * We need to drop the pending frame to avoid issues with the
1380 * new GO Negotiation, e.g., when the pending frame was from a
1381 * previous attempt at starting a GO Negotiation.
1382 */
ed496f13 1383 p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion");
f44ae207
JM		 1384 os_free(p2p->after_scan_tx);
1385 p2p->after_scan_tx = NULL;
1386 }
1387
b22128ef 1388 dev->wps_method = wps_method;
ab9e3442 1389 dev->oob_pw_id = oob_pw_id;
b22128ef 1390 dev->status = P2P_SC_SUCCESS;
d5b20a73 1391
b22128ef 1392 if (p2p->p2p_scan_running) {
ed496f13 1393 p2p_dbg(p2p, "p2p_scan running - delay connect send");
b22128ef
JM		 1394 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1395 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1396 return 0;
1397 }
1398 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1399
1400 return p2p_connect_send(p2p, dev);
1401}
1402
1403
1404int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1405 enum p2p_wps_method wps_method,
1406 int go_intent, const u8 *own_interface_addr,
23c84252 1407 unsigned int force_freq, int persistent_group,
04a3e69d 1408 const u8 *force_ssid, size_t force_ssid_len,
ab9e3442 1409 unsigned int pref_freq, u16 oob_pw_id)
b22128ef
JM		 1410{
1411 struct p2p_device *dev;
1412
ed496f13 1413 p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
b22128ef 1414 " GO Intent=%d Intended Interface Address=" MACSTR
ab9e3442 1415 " wps_method=%d persistent_group=%d oob_pw_id=%u",
b22128ef 1416 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
ab9e3442 1417 wps_method, persistent_group, oob_pw_id);
b22128ef 1418
b22128ef
JM		 1419 dev = p2p_get_device(p2p, peer_addr);
1420 if (dev == NULL) {
ed496f13 1421 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
b22128ef
JM		 1422 MAC2STR(peer_addr));
1423 return -1;
1424 }
1425
51e9f228
JM		 1426 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent ==
1427 15) < 0)
92ac756c
JM		 1428 return -1;
1429
23c84252
JM		 1430 p2p->ssid_set = 0;
1431 if (force_ssid) {
1432 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1433 force_ssid, force_ssid_len);
1434 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1435 p2p->ssid_len = force_ssid_len;
1436 p2p->ssid_set = 1;
1437 }
1438
b22128ef
JM		 1439 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1440 dev->flags &= ~P2P_DEV_USER_REJECTED;
1441 dev->go_neg_req_sent = 0;
1442 dev->go_state = UNKNOWN_GO;
acc247b2 1443 p2p_set_dev_persistent(dev, persistent_group);
b22128ef
JM		 1444 p2p->go_intent = go_intent;
1445 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1446
1447 dev->wps_method = wps_method;
ab9e3442 1448 dev->oob_pw_id = oob_pw_id;
b22128ef
JM		 1449 dev->status = P2P_SC_SUCCESS;
1450
1451 return 0;
1452}
1453
1454
1455void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1456 struct p2p_device *dev, struct p2p_message *msg)
1457{
acb69cec 1458 os_get_reltime(&dev->last_seen);
b22128ef 1459
ed496f13 1460 p2p_copy_wps_info(p2p, dev, 0, msg);
e57ae6e1 1461
b22128ef
JM		 1462 if (msg->listen_channel) {
1463 int freq;
9ccd9165 1464 freq = p2p_channel_to_freq(msg->listen_channel[3],
b22128ef
JM		 1465 msg->listen_channel[4]);
1466 if (freq < 0) {
ed496f13 1467 p2p_dbg(p2p, "Unknown peer Listen channel: "
b22128ef
JM		 1468 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1469 msg->listen_channel[0],
1470 msg->listen_channel[1],
1471 msg->listen_channel[2],
1472 msg->listen_channel[3],
1473 msg->listen_channel[4]);
1474 } else {
ed496f13
JM		 1475 p2p_dbg(p2p, "Update peer " MACSTR
1476 " Listen channel: %u -> %u MHz",
c5db8e51 1477 MAC2STR(dev->info.p2p_device_addr),
b22128ef
JM		 1478 dev->listen_freq, freq);
1479 dev->listen_freq = freq;
1480 }
1481 }
b22128ef 1482
9675ce35
JM		 1483 if (msg->wfd_subelems) {
1484 wpabuf_free(dev->info.wfd_subelems);
1485 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1486 }
1487
b22128ef
JM		 1488 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1489 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
ed496f13 1490 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
b22128ef 1491 } else {
ed496f13 1492 p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
b22128ef
JM		 1493 MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1494 "listen_freq=%d",
c5db8e51
KRK		 1495 MAC2STR(dev->info.p2p_device_addr),
1496 dev->info.dev_capab, dev->info.group_capab,
1497 dev->info.device_name, dev->listen_freq);
b22128ef
JM		 1498 }
1499
1500 dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1501
1502 if (dev->flags & P2P_DEV_USER_REJECTED) {
ed496f13 1503 p2p_dbg(p2p, "Do not report rejected device");
b22128ef
JM		 1504 return;
1505 }
1506
8fd7dc1b
JB		 1507 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1508 !(dev->flags & P2P_DEV_REPORTED_ONCE));
1509 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
b22128ef
JM		 1510}
1511
1512
1513void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1514{
1515 os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1516 p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1517 os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1518 p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1519 *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1520}
1521
1522
1523int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1524{
1525 p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1526 p2p_random(params->passphrase, 8);
1527 return 0;
1528}
1529
1530
1531void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1532{
1533 struct p2p_go_neg_results res;
1534 int go = peer->go_state == LOCAL_GO;
1535 struct p2p_channels intersection;
1536 int freqs;
1537 size_t i, j;
1538
ed496f13
JM		 1539 p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1540 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
b22128ef
JM		 1541
1542 os_memset(&res, 0, sizeof(res));
1543 res.role_go = go;
c5db8e51 1544 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
b22128ef
JM		 1545 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1546 res.wps_method = peer->wps_method;
acc247b2
JM		 1547 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1548 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1549 res.persistent_group = 2;
1550 else
1551 res.persistent_group = 1;
1552 }
b22128ef
JM		 1553
1554 if (go) {
1555 /* Setup AP mode for WPS provisioning */
9ccd9165 1556 res.freq = p2p_channel_to_freq(p2p->op_reg_class,
b22128ef
JM		 1557 p2p->op_channel);
1558 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1559 res.ssid_len = p2p->ssid_len;
1560 p2p_random(res.passphrase, 8);
e9a7ae41 1561 } else {
b22128ef 1562 res.freq = peer->oper_freq;
e9a7ae41
JM		 1563 if (p2p->ssid_len) {
1564 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1565 res.ssid_len = p2p->ssid_len;
1566 }
1567 }
b22128ef 1568
556b30da
JM		 1569 p2p_channels_dump(p2p, "own channels", &p2p->channels);
1570 p2p_channels_dump(p2p, "peer channels", &peer->channels);
b22128ef
JM		 1571 p2p_channels_intersect(&p2p->channels, &peer->channels,
1572 &intersection);
556b30da
JM		 1573 if (go) {
1574 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq);
1575 p2p_channels_dump(p2p, "intersection after no-GO removal",
1576 &intersection);
1577 }
b22128ef
JM		 1578 freqs = 0;
1579 for (i = 0; i < intersection.reg_classes; i++) {
1580 struct p2p_reg_class *c = &intersection.reg_class[i];
1581 if (freqs + 1 == P2P_MAX_CHANNELS)
1582 break;
1583 for (j = 0; j < c->channels; j++) {
1584 int freq;
1585 if (freqs + 1 == P2P_MAX_CHANNELS)
1586 break;
9ccd9165 1587 freq = p2p_channel_to_freq(c->reg_class, c->channel[j]);
b22128ef
JM		 1588 if (freq < 0)
1589 continue;
1590 res.freq_list[freqs++] = freq;
1591 }
1592 }
1593
ae3e3421
JM		 1594 res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1595
b22128ef 1596 p2p_clear_timeout(p2p);
4458d915 1597 p2p->ssid_set = 0;
b22128ef
JM		 1598 peer->go_neg_req_sent = 0;
1599 peer->wps_method = WPS_NOT_READY;
ab9e3442 1600 peer->oob_pw_id = 0;
b22128ef
JM		 1601
1602 p2p_set_state(p2p, P2P_PROVISIONING);
1603 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1604}
1605
1606
1607static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1608 const u8 *data, size_t len, int rx_freq)
1609{
ed496f13 1610 p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
b22128ef
JM		 1611 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1612
1613 if (len < 1)
1614 return;
1615
1616 switch (data[0]) {
1617 case P2P_GO_NEG_REQ:
1618 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1619 break;
1620 case P2P_GO_NEG_RESP:
1621 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1622 break;
1623 case P2P_GO_NEG_CONF:
1624 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1625 break;
1626 case P2P_INVITATION_REQ:
1627 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1628 rx_freq);
1629 break;
1630 case P2P_INVITATION_RESP:
dc46fd66 1631 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
b22128ef
JM		 1632 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1633 break;
1634 case P2P_PROV_DISC_REQ:
1635 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1636 break;
1637 case P2P_PROV_DISC_RESP:
1638 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1639 break;
1640 case P2P_DEV_DISC_REQ:
1641 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1642 break;
1643 case P2P_DEV_DISC_RESP:
1644 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1645 break;
1646 default:
ed496f13 1647 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
b22128ef
JM		 1648 data[0]);
1649 break;
1650 }
1651}
1652
1653
19df9b07
JM		 1654static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1655 const u8 *sa, const u8 *bssid, const u8 *data,
1656 size_t len, int freq)
b22128ef
JM		 1657{
1658 if (len < 1)
1659 return;
1660
1661 switch (data[0]) {
1662 case WLAN_PA_VENDOR_SPECIFIC:
1663 data++;
1664 len--;
1665 if (len < 3)
1666 return;
1667 if (WPA_GET_BE24(data) != OUI_WFA)
1668 return;
1669
1670 data += 3;
1671 len -= 3;
1672 if (len < 1)
1673 return;
1674
1675 if (*data != P2P_OUI_TYPE)
1676 return;
1677
1678 p2p_rx_p2p_action(p2p, sa, data + 1, len - 1, freq);
1679 break;
1680 case WLAN_PA_GAS_INITIAL_REQ:
1681 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1682 break;
1683 case WLAN_PA_GAS_INITIAL_RESP:
18708aad
JM		 1684 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1685 break;
1686 case WLAN_PA_GAS_COMEBACK_REQ:
1687 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1688 break;
1689 case WLAN_PA_GAS_COMEBACK_RESP:
1690 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
b22128ef
JM		 1691 break;
1692 }
1693}
1694
1695
1696void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1697 const u8 *bssid, u8 category,
1698 const u8 *data, size_t len, int freq)
1699{
1700 if (category == WLAN_ACTION_PUBLIC) {
1701 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1702 return;
1703 }
1704
1705 if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1706 return;
1707
1708 if (len < 4)
1709 return;
1710
1711 if (WPA_GET_BE24(data) != OUI_WFA)
1712 return;
1713 data += 3;
1714 len -= 3;
1715
1716 if (*data != P2P_OUI_TYPE)
1717 return;
1718 data++;
1719 len--;
1720
1721 /* P2P action frame */
ed496f13 1722 p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
b22128ef
JM		 1723 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1724
1725 if (len < 1)
1726 return;
1727 switch (data[0]) {
1728 case P2P_NOA:
ed496f13 1729 p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
b22128ef
JM		 1730 /* TODO */
1731 break;
1732 case P2P_PRESENCE_REQ:
1733 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1734 break;
1735 case P2P_PRESENCE_RESP:
1736 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1737 break;
1738 case P2P_GO_DISC_REQ:
1739 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1740 break;
1741 default:
ed496f13 1742 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
b22128ef
JM		 1743 break;
1744 }
1745}
1746
1747
1748static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1749{
1750 struct p2p_data *p2p = eloop_ctx;
1751 if (p2p->go_neg_peer == NULL)
1752 return;
1753 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1754 p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1755 p2p_connect_send(p2p, p2p->go_neg_peer);
1756}
1757
1758
1759static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1760{
1761 struct p2p_data *p2p = eloop_ctx;
1762 if (p2p->invite_peer == NULL)
1763 return;
1764 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1765 p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr);
1766}
1767
1768
1769static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1770 const u8 *ie, size_t ie_len)
1771{
1772 struct p2p_message msg;
1773 struct p2p_device *dev;
1774
1775 os_memset(&msg, 0, sizeof(msg));
1776 if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1777 {
1778 p2p_parse_free(&msg);
1779 return; /* not a P2P probe */
1780 }
1781
1782 if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
1783 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
1784 != 0) {
1785 /* The Probe Request is not part of P2P Device Discovery. It is
1786 * not known whether the source address of the frame is the P2P
1787 * Device Address or P2P Interface Address. Do not add a new
1788 * peer entry based on this frames.
1789 */
1790 p2p_parse_free(&msg);
1791 return;
1792 }
1793
1794 dev = p2p_get_device(p2p, addr);
1795 if (dev) {
1796 if (dev->country[0] == 0 && msg.listen_channel)
1797 os_memcpy(dev->country, msg.listen_channel, 3);
acb69cec 1798 os_get_reltime(&dev->last_seen);
b22128ef
JM		 1799 p2p_parse_free(&msg);
1800 return; /* already known */
1801 }
1802
1803 dev = p2p_create_device(p2p, addr);
1804 if (dev == NULL) {
1805 p2p_parse_free(&msg);
1806 return;
1807 }
1808
acb69cec 1809 os_get_reltime(&dev->last_seen);
b22128ef
JM		 1810 dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
1811
b22128ef
JM		 1812 if (msg.listen_channel) {
1813 os_memcpy(dev->country, msg.listen_channel, 3);
9ccd9165 1814 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
b22128ef
JM		 1815 msg.listen_channel[4]);
1816 }
1817
ed496f13 1818 p2p_copy_wps_info(p2p, dev, 1, &msg);
e57ae6e1 1819
9675ce35
JM		 1820 if (msg.wfd_subelems) {
1821 wpabuf_free(dev->info.wfd_subelems);
1822 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
1823 }
1824
b22128ef
JM		 1825 p2p_parse_free(&msg);
1826
ed496f13 1827 p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
b22128ef 1828 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
c5db8e51
KRK		 1829 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
1830 dev->info.group_capab, dev->info.device_name,
1831 dev->listen_freq);
b22128ef
JM		 1832}
1833
1834
1835struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
1836 const u8 *addr,
1837 struct p2p_message *msg)
1838{
1839 struct p2p_device *dev;
1840
1841 dev = p2p_get_device(p2p, addr);
1842 if (dev) {
acb69cec 1843 os_get_reltime(&dev->last_seen);
b22128ef
JM		 1844 return dev; /* already known */
1845 }
1846
1847 dev = p2p_create_device(p2p, addr);
1848 if (dev == NULL)
1849 return NULL;
1850
1851 p2p_add_dev_info(p2p, addr, dev, msg);
1852
1853 return dev;
1854}
1855
1856
1857static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
1858{
1859 if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
1860 return 1;
1861 if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
1862 WPA_GET_BE32(&req_dev_type[2]) == 0 &&
1863 WPA_GET_BE16(&req_dev_type[6]) == 0)
1864 return 1; /* Category match with wildcard OUI/sub-category */
1865 return 0;
1866}
1867
1868
1869int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
1870 size_t num_req_dev_type)
1871{
1872 size_t i;
1873 for (i = 0; i < num_req_dev_type; i++) {
1874 if (dev_type_match(dev_type, req_dev_type[i]))
1875 return 1;
1876 }
1877 return 0;
1878}
1879
1880
1881/**
1882 * p2p_match_dev_type - Match local device type with requested type
1883 * @p2p: P2P module context from p2p_init()
1884 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1885 * Returns: 1 on match, 0 on mismatch
1886 *
1887 * This function can be used to match the Requested Device Type attribute in
1888 * WPS IE with the local device types for deciding whether to reply to a Probe
1889 * Request frame.
1890 */
1891int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
1892{
1893 struct wps_parse_attr attr;
1894 size_t i;
1895
1896 if (wps_parse_msg(wps, &attr))
1897 return 1; /* assume no Requested Device Type attributes */
1898
1899 if (attr.num_req_dev_type == 0)
1900 return 1; /* no Requested Device Type attributes -> match */
1901
1902 if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
1903 attr.num_req_dev_type))
1904 return 1; /* Own Primary Device Type matches */
1905
1906 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++)
1907 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
1908 attr.req_dev_type,
1909 attr.num_req_dev_type))
1910 return 1; /* Own Secondary Device Type matches */
1911
1912 /* No matching device type found */
1913 return 0;
1914}
1915
1916
1917struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
1918{
1919 struct wpabuf *buf;
1920 u8 *len;
360182ed 1921 int pw_id = -1;
9675ce35 1922 size_t extra = 0;
b22128ef 1923
9675ce35
JM		 1924#ifdef CONFIG_WIFI_DISPLAY
1925 if (p2p->wfd_ie_probe_resp)
1926 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
1927#endif /* CONFIG_WIFI_DISPLAY */
1928
1929 buf = wpabuf_alloc(1000 + extra);
b22128ef
JM		 1930 if (buf == NULL)
1931 return NULL;
1932
360182ed
JM		 1933 if (p2p->go_neg_peer) {
1934 /* Advertise immediate availability of WPS credential */
1935 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
1936 }
1937
33183761
JM		 1938 if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) {
1939 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response");
1940 wpabuf_free(buf);
1941 return NULL;
1942 }
b22128ef 1943
9675ce35
JM		 1944#ifdef CONFIG_WIFI_DISPLAY
1945 if (p2p->wfd_ie_probe_resp)
1946 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
1947#endif /* CONFIG_WIFI_DISPLAY */
1948
b22128ef
JM		 1949 /* P2P IE */
1950 len = p2p_buf_add_ie_hdr(buf);
18485b54
MH		 1951 p2p_buf_add_capability(buf, p2p->dev_capab &
1952 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
b22128ef
JM		 1953 if (p2p->ext_listen_interval)
1954 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
1955 p2p->ext_listen_interval);
1956 p2p_buf_add_device_info(buf, p2p, NULL);
1957 p2p_buf_update_ie_hdr(buf, len);
1958
1959 return buf;
1960}
1961
1962
2d43d37f
JB		 1963static enum p2p_probe_req_status
1964p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
1965 const u8 *bssid, const u8 *ie, size_t ie_len)
b22128ef
JM		 1966{
1967 struct ieee802_11_elems elems;
1968 struct wpabuf *buf;
1969 struct ieee80211_mgmt *resp;
97c5b3c4 1970 struct p2p_message msg;
b22128ef
JM		 1971 struct wpabuf *ies;
1972
1973 if (!p2p->in_listen || !p2p->drv_in_listen) {
1974 /* not in Listen state - ignore Probe Request */
2d43d37f 1975 return P2P_PREQ_NOT_LISTEN;
b22128ef
JM		 1976 }
1977
1978 if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
1979 ParseFailed) {
1980 /* Ignore invalid Probe Request frames */
2d43d37f 1981 return P2P_PREQ_MALFORMED;
b22128ef
JM		 1982 }
1983
1984 if (elems.p2p == NULL) {
1985 /* not a P2P probe - ignore it */
2d43d37f 1986 return P2P_PREQ_NOT_P2P;
b22128ef
JM		 1987 }
1988
04a85e44
JM		 1989 if (dst && !is_broadcast_ether_addr(dst) &&
1990 os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
1991 /* Not sent to the broadcast address or our P2P Device Address
1992 */
2d43d37f 1993 return P2P_PREQ_NOT_PROCESSED;
04a85e44
JM		 1994 }
1995
1996 if (bssid && !is_broadcast_ether_addr(bssid)) {
1997 /* Not sent to the Wildcard BSSID */
2d43d37f 1998 return P2P_PREQ_NOT_PROCESSED;
04a85e44
JM		 1999 }
2000
b22128ef
JM		 2001 if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2002 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2003 0) {
2004 /* not using P2P Wildcard SSID - ignore */
2d43d37f 2005 return P2P_PREQ_NOT_PROCESSED;
b22128ef
JM		 2006 }
2007
e1d52629
JM		 2008 if (supp_rates_11b_only(&elems)) {
2009 /* Indicates support for 11b rates only */
2d43d37f 2010 return P2P_PREQ_NOT_P2P;
e1d52629
JM		 2011 }
2012
97c5b3c4
JM		 2013 os_memset(&msg, 0, sizeof(msg));
2014 if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2015 /* Could not parse P2P attributes */
2d43d37f 2016 return P2P_PREQ_NOT_P2P;
97c5b3c4
JM		 2017 }
2018
2019 if (msg.device_id &&
1c7447d0 2020 os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
97c5b3c4
JM		 2021 /* Device ID did not match */
2022 p2p_parse_free(&msg);
2d43d37f 2023 return P2P_PREQ_NOT_PROCESSED;
97c5b3c4
JM		 2024 }
2025
b22128ef 2026 /* Check Requested Device Type match */
97c5b3c4
JM		 2027 if (msg.wps_attributes &&
2028 !p2p_match_dev_type(p2p, msg.wps_attributes)) {
b22128ef 2029 /* No match with Requested Device Type */
97c5b3c4 2030 p2p_parse_free(&msg);
2d43d37f 2031 return P2P_PREQ_NOT_PROCESSED;
b22128ef 2032 }
97c5b3c4 2033 p2p_parse_free(&msg);
b22128ef 2034
2d43d37f
JB		 2035 if (!p2p->cfg->send_probe_resp) {
2036 /* Response generated elsewhere */
2037 return P2P_PREQ_NOT_PROCESSED;
2038 }
b22128ef 2039
ed496f13 2040 p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
b22128ef
JM		 2041
2042 /*
2043 * We do not really have a specific BSS that this frame is advertising,
2044 * so build a frame that has some information in valid format. This is
2045 * really only used for discovery purposes, not to learn exact BSS
2046 * parameters.
2047 */
2048 ies = p2p_build_probe_resp_ies(p2p);
2049 if (ies == NULL)
2d43d37f 2050 return P2P_PREQ_NOT_PROCESSED;
b22128ef
JM		 2051
2052 buf = wpabuf_alloc(200 + wpabuf_len(ies));
2053 if (buf == NULL) {
2054 wpabuf_free(ies);
2d43d37f 2055 return P2P_PREQ_NOT_PROCESSED;
b22128ef
JM		 2056 }
2057
2058 resp = NULL;
2059 resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
2060
2061 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2062 (WLAN_FC_STYPE_PROBE_RESP << 4));
2063 os_memcpy(resp->da, addr, ETH_ALEN);
2064 os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2065 os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2066 resp->u.probe_resp.beacon_int = host_to_le16(100);
2067 /* hardware or low-level driver will setup seq_ctrl and timestamp */
2068 resp->u.probe_resp.capab_info =
2069 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2070 WLAN_CAPABILITY_PRIVACY |
2071 WLAN_CAPABILITY_SHORT_SLOT_TIME);
2072
2073 wpabuf_put_u8(buf, WLAN_EID_SSID);
2074 wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2075 wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2076
2077 wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2078 wpabuf_put_u8(buf, 8);
2079 wpabuf_put_u8(buf, (60 / 5) | 0x80);
2080 wpabuf_put_u8(buf, 90 / 5);
2081 wpabuf_put_u8(buf, (120 / 5) | 0x80);
2082 wpabuf_put_u8(buf, 180 / 5);
2083 wpabuf_put_u8(buf, (240 / 5) | 0x80);
2084 wpabuf_put_u8(buf, 360 / 5);
2085 wpabuf_put_u8(buf, 480 / 5);
2086 wpabuf_put_u8(buf, 540 / 5);
2087
2088 wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2089 wpabuf_put_u8(buf, 1);
2090 wpabuf_put_u8(buf, p2p->cfg->channel);
2091
2092 wpabuf_put_buf(buf, ies);
2093 wpabuf_free(ies);
2094
2095 p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
2096
2097 wpabuf_free(buf);
2d43d37f
JB		 2098
2099 return P2P_PREQ_NOT_PROCESSED;
b22128ef
JM		 2100}
2101
2102
2d43d37f
JB		 2103enum p2p_probe_req_status
2104p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2105 const u8 *bssid, const u8 *ie, size_t ie_len)
b22128ef 2106{
2d43d37f
JB		 2107 enum p2p_probe_req_status res;
2108
b22128ef
JM		 2109 p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2110
2d43d37f 2111 res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len);
b22128ef
JM		 2112
2113 if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2114 p2p->go_neg_peer &&
c5db8e51 2115 os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
c03e2113
JM		 2116 == 0 &&
2117 !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
b22128ef 2118 /* Received a Probe Request from GO Negotiation peer */
ed496f13 2119 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
8cee87ab 2120 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
b22128ef 2121 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2d43d37f 2122 return P2P_PREQ_PROCESSED;
b22128ef
JM		 2123 }
2124
2125 if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2126 p2p->invite_peer &&
c5db8e51
KRK		 2127 os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2128 == 0) {
b22128ef 2129 /* Received a Probe Request from Invite peer */
ed496f13 2130 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
b22128ef 2131 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2d43d37f 2132 return P2P_PREQ_PROCESSED;
b22128ef
JM		 2133 }
2134
2d43d37f 2135 return res;
b22128ef
JM		 2136}
2137
2138
2139static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
4c08c0bd 2140 u8 *buf, size_t len, struct wpabuf *p2p_ie)
b22128ef
JM		 2141{
2142 struct wpabuf *tmp;
2143 u8 *lpos;
2144 size_t tmplen;
2145 int res;
72044390 2146 u8 group_capab;
b22128ef 2147
4c08c0bd
JM		 2148 if (p2p_ie == NULL)
2149 return 0; /* WLAN AP is not a P2P manager */
b22128ef
JM		 2150
2151 /*
2152 * (Re)Association Request - P2P IE
2153 * P2P Capability attribute (shall be present)
4c08c0bd
JM		 2154 * P2P Interface attribute (present if concurrent device and
2155 * P2P Management is enabled)
b22128ef
JM		 2156 */
2157 tmp = wpabuf_alloc(200);
2158 if (tmp == NULL)
2159 return -1;
2160
2161 lpos = p2p_buf_add_ie_hdr(tmp);
72044390
JM		 2162 group_capab = 0;
2163 if (p2p->num_groups > 0) {
2164 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2165 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2166 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2167 p2p->cross_connect)
2168 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2169 }
2170 p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
4c08c0bd
JM		 2171 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2172 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
b22128ef
JM		 2173 p2p_buf_add_p2p_interface(tmp, p2p);
2174 p2p_buf_update_ie_hdr(tmp, lpos);
2175
2176 tmplen = wpabuf_len(tmp);
2177 if (tmplen > len)
2178 res = -1;
2179 else {
2180 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2181 res = tmplen;
2182 }
2183 wpabuf_free(tmp);
2184
2185 return res;
2186}
2187
2188
2189int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
4c08c0bd 2190 size_t len, int p2p_group, struct wpabuf *p2p_ie)
b22128ef
JM		 2191{
2192 struct wpabuf *tmp;
2193 u8 *lpos;
2194 struct p2p_device *peer;
2195 size_t tmplen;
2196 int res;
9675ce35 2197 size_t extra = 0;
b22128ef
JM		 2198
2199 if (!p2p_group)
4c08c0bd 2200 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
b22128ef 2201
9675ce35
JM		 2202#ifdef CONFIG_WIFI_DISPLAY
2203 if (p2p->wfd_ie_assoc_req)
2204 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2205#endif /* CONFIG_WIFI_DISPLAY */
2206
b22128ef
JM		 2207 /*
2208 * (Re)Association Request - P2P IE
2209 * P2P Capability attribute (shall be present)
2210 * Extended Listen Timing (may be present)
2211 * P2P Device Info attribute (shall be present)
2212 */
9675ce35 2213 tmp = wpabuf_alloc(200 + extra);
b22128ef
JM		 2214 if (tmp == NULL)
2215 return -1;
2216
9675ce35
JM		 2217#ifdef CONFIG_WIFI_DISPLAY
2218 if (p2p->wfd_ie_assoc_req)
2219 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2220#endif /* CONFIG_WIFI_DISPLAY */
2221
b22128ef
JM		 2222 peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2223
2224 lpos = p2p_buf_add_ie_hdr(tmp);
2225 p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
5be5305b
JM		 2226 if (p2p->ext_listen_interval)
2227 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2228 p2p->ext_listen_interval);
b22128ef
JM		 2229 p2p_buf_add_device_info(tmp, p2p, peer);
2230 p2p_buf_update_ie_hdr(tmp, lpos);
2231
2232 tmplen = wpabuf_len(tmp);
2233 if (tmplen > len)
2234 res = -1;
2235 else {
2236 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2237 res = tmplen;
2238 }
2239 wpabuf_free(tmp);
2240
2241 return res;
2242}
2243
2244
2245int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2246{
2247 struct wpabuf *p2p_ie;
2248 int ret;
2249
2250 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2251 if (p2p_ie == NULL)
2252 return 0;
2253
2254 ret = p2p_attr_text(p2p_ie, buf, end);
2255 wpabuf_free(p2p_ie);
2256 return ret;
2257}
2258
2259
c2d76aa6 2260int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
0a70f34f 2261{
0a70f34f
JM		 2262 struct p2p_message msg;
2263
0a70f34f 2264 os_memset(&msg, 0, sizeof(msg));
c2d76aa6 2265 if (p2p_parse_p2p_ie(p2p_ie, &msg))
0a70f34f 2266 return -1;
0a70f34f 2267
526ec4ae
JM		 2268 if (msg.p2p_device_addr) {
2269 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
c2d76aa6 2270 return 0;
526ec4ae
JM		 2271 } else if (msg.device_id) {
2272 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
c2d76aa6 2273 return 0;
0a70f34f 2274 }
c2d76aa6
MH		 2275 return -1;
2276}
0a70f34f 2277
c2d76aa6
MH		 2278
2279int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2280{
2281 struct wpabuf *p2p_ie;
2282 int ret;
2283
2284 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2285 P2P_IE_VENDOR_TYPE);
2286 if (p2p_ie == NULL)
2287 return -1;
2288 ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
0a70f34f 2289 wpabuf_free(p2p_ie);
526ec4ae 2290 return ret;
0a70f34f
JM		 2291}
2292
2293
b22128ef
JM		 2294static void p2p_clear_go_neg(struct p2p_data *p2p)
2295{
2296 p2p->go_neg_peer = NULL;
2297 p2p_clear_timeout(p2p);
2298 p2p_set_state(p2p, P2P_IDLE);
2299}
2300
2301
2302void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2303{
2304 if (p2p->go_neg_peer == NULL) {
ed496f13 2305 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
b22128ef
JM		 2306 return; /* No pending Group Formation */
2307 }
2308
2309 if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2310 0) {
ed496f13
JM		 2311 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2312 MACSTR " (GO Negotiation peer " MACSTR ")",
b22128ef
JM		 2313 MAC2STR(mac_addr),
2314 MAC2STR(p2p->go_neg_peer->intended_addr));
2315 return; /* Ignore unexpected peer address */
2316 }
2317
ed496f13 2318 p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
b22128ef
JM		 2319 MAC2STR(mac_addr));
2320
2321 p2p_clear_go_neg(p2p);
2322}
2323
2324
2325void p2p_group_formation_failed(struct p2p_data *p2p)
2326{
2327 if (p2p->go_neg_peer == NULL) {
ed496f13 2328 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
b22128ef
JM		 2329 return; /* No pending Group Formation */
2330 }
2331
ed496f13 2332 p2p_dbg(p2p, "Group Formation failed with " MACSTR,
b22128ef
JM		 2333 MAC2STR(p2p->go_neg_peer->intended_addr));
2334
2335 p2p_clear_go_neg(p2p);
2336}
2337
2338
2339struct p2p_data * p2p_init(const struct p2p_config *cfg)
2340{
2341 struct p2p_data *p2p;
2342
2343 if (cfg->max_peers < 1)
2344 return NULL;
2345
2346 p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2347 if (p2p == NULL)
2348 return NULL;
2349 p2p->cfg = (struct p2p_config *) (p2p + 1);
2350 os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2351 if (cfg->dev_name)
2352 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
b6e01800
JM		 2353 if (cfg->manufacturer)
2354 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2355 if (cfg->model_name)
2356 p2p->cfg->model_name = os_strdup(cfg->model_name);
2357 if (cfg->model_number)
2358 p2p->cfg->model_number = os_strdup(cfg->model_number);
2359 if (cfg->serial_number)
2360 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
21d996f7
JM		 2361 if (cfg->pref_chan) {
2362 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2363 sizeof(struct p2p_channel));
2364 if (p2p->cfg->pref_chan) {
2365 os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2366 cfg->num_pref_chan *
2367 sizeof(struct p2p_channel));
2368 } else
2369 p2p->cfg->num_pref_chan = 0;
2370 }
b22128ef
JM		 2371
2372 p2p->min_disc_int = 1;
2373 p2p->max_disc_int = 3;
96beff11 2374 p2p->max_disc_tu = -1;
b22128ef
JM		 2375
2376 os_get_random(&p2p->next_tie_breaker, 1);
2377 p2p->next_tie_breaker &= 0x01;
2378 if (cfg->sd_request)
2379 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2380 p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2381 if (cfg->concurrent_operations)
2382 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2383 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2384
2385 dl_list_init(&p2p->devices);
2386
2387 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2388 p2p_expiration_timeout, p2p, NULL);
2389
4f219667
JM		 2390 p2p->go_timeout = 100;
2391 p2p->client_timeout = 20;
2392
51e9f228
JM		 2393 p2p_dbg(p2p, "initialized");
2394 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2395 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2396
b22128ef
JM		 2397 return p2p;
2398}
2399
2400
2401void p2p_deinit(struct p2p_data *p2p)
2402{
9675ce35
JM		 2403#ifdef CONFIG_WIFI_DISPLAY
2404 wpabuf_free(p2p->wfd_ie_beacon);
2405 wpabuf_free(p2p->wfd_ie_probe_req);
2406 wpabuf_free(p2p->wfd_ie_probe_resp);
2407 wpabuf_free(p2p->wfd_ie_assoc_req);
2408 wpabuf_free(p2p->wfd_ie_invitation);
2409 wpabuf_free(p2p->wfd_ie_prov_disc_req);
2410 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2411 wpabuf_free(p2p->wfd_ie_go_neg);
2412 wpabuf_free(p2p->wfd_dev_info);
2413 wpabuf_free(p2p->wfd_assoc_bssid);
2414 wpabuf_free(p2p->wfd_coupled_sink_info);
2415#endif /* CONFIG_WIFI_DISPLAY */
2416
b22128ef
JM		 2417 eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2418 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2419 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
8cee87ab 2420 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
b22128ef 2421 p2p_flush(p2p);
046ef4aa 2422 p2p_free_req_dev_types(p2p);
b22128ef 2423 os_free(p2p->cfg->dev_name);
b6e01800
JM		 2424 os_free(p2p->cfg->manufacturer);
2425 os_free(p2p->cfg->model_name);
2426 os_free(p2p->cfg->model_number);
2427 os_free(p2p->cfg->serial_number);
21d996f7 2428 os_free(p2p->cfg->pref_chan);
b22128ef 2429 os_free(p2p->groups);
18708aad 2430 wpabuf_free(p2p->sd_resp);
3f9285ff 2431 os_free(p2p->after_scan_tx);
f95cac27 2432 p2p_remove_wps_vendor_extensions(p2p);
556b30da 2433 os_free(p2p->no_go_freq.range);
b22128ef
JM		 2434 os_free(p2p);
2435}
2436
2437
2438void p2p_flush(struct p2p_data *p2p)
2439{
2440 struct p2p_device *dev, *prev;
78db55b8 2441 p2p_stop_find(p2p);
b22128ef
JM		 2442 dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2443 list) {
2444 dl_list_del(&dev->list);
2445 p2p_device_free(p2p, dev);
2446 }
2447 p2p_free_sd_queries(p2p);
f44ae207
JM		 2448 os_free(p2p->after_scan_tx);
2449 p2p->after_scan_tx = NULL;
b22128ef
JM		 2450}
2451
2452
9d562b79
SS		 2453int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2454{
2455 struct p2p_device *dev;
2456
2457 dev = p2p_get_device(p2p, addr);
2458 if (dev == NULL)
2459 return -1;
2460
ed496f13 2461 p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
9d562b79
SS		 2462
2463 if (p2p->go_neg_peer == dev)
2464 p2p->go_neg_peer = NULL;
2465
2466 dev->wps_method = WPS_NOT_READY;
ab9e3442 2467 dev->oob_pw_id = 0;
9d562b79
SS		 2468 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2469 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2470
2471 /* Check if after_scan_tx is for this peer. If so free it */
2472 if (p2p->after_scan_tx &&
2473 os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2474 os_free(p2p->after_scan_tx);
2475 p2p->after_scan_tx = NULL;
2476 }
2477
2478 return 0;
2479}
2480
2481
b22128ef
JM		 2482int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2483{
2484 os_free(p2p->cfg->dev_name);
2485 if (dev_name) {
2486 p2p->cfg->dev_name = os_strdup(dev_name);
2487 if (p2p->cfg->dev_name == NULL)
2488 return -1;
2489 } else
2490 p2p->cfg->dev_name = NULL;
2491 return 0;
2492}
2493
2494
b6e01800
JM		 2495int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
2496{
2497 os_free(p2p->cfg->manufacturer);
2498 p2p->cfg->manufacturer = NULL;
2499 if (manufacturer) {
2500 p2p->cfg->manufacturer = os_strdup(manufacturer);
2501 if (p2p->cfg->manufacturer == NULL)
2502 return -1;
2503 }
2504
2505 return 0;
2506}
2507
2508
2509int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
2510{
2511 os_free(p2p->cfg->model_name);
2512 p2p->cfg->model_name = NULL;
2513 if (model_name) {
2514 p2p->cfg->model_name = os_strdup(model_name);
2515 if (p2p->cfg->model_name == NULL)
2516 return -1;
2517 }
2518
2519 return 0;
2520}
2521
2522
2523int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
2524{
2525 os_free(p2p->cfg->model_number);
2526 p2p->cfg->model_number = NULL;
2527 if (model_number) {
2528 p2p->cfg->model_number = os_strdup(model_number);
2529 if (p2p->cfg->model_number == NULL)
2530 return -1;
2531 }
2532
2533 return 0;
2534}
2535
2536
2537int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
2538{
2539 os_free(p2p->cfg->serial_number);
2540 p2p->cfg->serial_number = NULL;
2541 if (serial_number) {
2542 p2p->cfg->serial_number = os_strdup(serial_number);
2543 if (p2p->cfg->serial_number == NULL)
2544 return -1;
2545 }
2546
2547 return 0;
2548}
2549
2550
2551void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
2552{
2553 p2p->cfg->config_methods = config_methods;
2554}
2555
2556
2557void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
2558{
2559 os_memcpy(p2p->cfg->uuid, uuid, 16);
2560}
2561
2562
b22128ef
JM		 2563int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
2564{
2565 os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
2566 return 0;
2567}
2568
2569
2570int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
2571 size_t num_dev_types)
2572{
2573 if (num_dev_types > P2P_SEC_DEVICE_TYPES)
2574 num_dev_types = P2P_SEC_DEVICE_TYPES;
2575 p2p->cfg->num_sec_dev_types = num_dev_types;
2576 os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
2577 return 0;
2578}
2579
2580
f95cac27
JMB		 2581void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
2582{
2583 int i;
2584
10c5d2a5 2585 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
f95cac27
JMB		 2586 wpabuf_free(p2p->wps_vendor_ext[i]);
2587 p2p->wps_vendor_ext[i] = NULL;
2588 }
2589}
2590
2591
2592int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2593 const struct wpabuf *vendor_ext)
2594{
2595 int i;
2596
2597 if (vendor_ext == NULL)
2598 return -1;
2599
10c5d2a5 2600 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
f95cac27
JMB		 2601 if (p2p->wps_vendor_ext[i] == NULL)
2602 break;
2603 }
10c5d2a5 2604 if (i >= P2P_MAX_WPS_VENDOR_EXT)
f95cac27
JMB		 2605 return -1;
2606
2607 p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
2608 if (p2p->wps_vendor_ext[i] == NULL)
2609 return -1;
2610
2611 return 0;
2612}
2613
2614
b22128ef
JM		 2615int p2p_set_country(struct p2p_data *p2p, const char *country)
2616{
2617 os_memcpy(p2p->cfg->country, country, 3);
2618 return 0;
2619}
2620
2621
2622void p2p_continue_find(struct p2p_data *p2p)
2623{
2624 struct p2p_device *dev;
2625 p2p_set_state(p2p, P2P_SEARCH);
2626 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2627 if (dev->flags & P2P_DEV_SD_SCHEDULE) {
2628 if (p2p_start_sd(p2p, dev) == 0)
2629 return;
2630 else
2631 break;
10c4edde
JM		 2632 } else if (dev->req_config_methods &&
2633 !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
ed496f13 2634 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
10c4edde 2635 MACSTR " (config methods 0x%x)",
c5db8e51 2636 MAC2STR(dev->info.p2p_device_addr),
10c4edde 2637 dev->req_config_methods);
1ef2f7ff 2638 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
b22128ef
JM		 2639 return;
2640 }
2641 }
2642
96beff11 2643 p2p_listen_in_find(p2p, 1);
b22128ef
JM		 2644}
2645
2646
2647static void p2p_sd_cb(struct p2p_data *p2p, int success)
2648{
ed496f13 2649 p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
b22128ef
JM		 2650 success);
2651 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2652
2653 if (!success) {
2654 if (p2p->sd_peer) {
2655 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
2656 p2p->sd_peer = NULL;
2657 }
2658 p2p_continue_find(p2p);
2659 return;
2660 }
2661
2662 if (p2p->sd_peer == NULL) {
ed496f13 2663 p2p_dbg(p2p, "No SD peer entry known");
b22128ef
JM		 2664 p2p_continue_find(p2p);
2665 return;
2666 }
2667
2668 /* Wait for response from the peer */
2669 p2p_set_state(p2p, P2P_SD_DURING_FIND);
2670 p2p_set_timeout(p2p, 0, 200000);
2671}
2672
6b56cc2d
JS		 2673
2674/**
2675 * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
2676 * @p2p: P2P module context from p2p_init()
2677 */
19df9b07 2678static void p2p_retry_pd(struct p2p_data *p2p)
6b56cc2d
JS		 2679{
2680 struct p2p_device *dev;
2681
2682 if (p2p->state != P2P_IDLE)
2683 return;
2684
2685 /*
2686 * Retry the prov disc req attempt only for the peer that the user had
175171ac 2687 * requested.
6b56cc2d
JS		 2688 */
2689
2690 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2691 if (os_memcmp(p2p->pending_pd_devaddr,
2692 dev->info.p2p_device_addr, ETH_ALEN) != 0)
2693 continue;
2694 if (!dev->req_config_methods)
2695 continue;
6b56cc2d 2696
ed496f13 2697 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
6b56cc2d
JS		 2698 MACSTR " (config methods 0x%x)",
2699 MAC2STR(dev->info.p2p_device_addr),
2700 dev->req_config_methods);
175171ac 2701 p2p_send_prov_disc_req(p2p, dev,
8d82c210
JM		 2702 dev->flags & P2P_DEV_PD_FOR_JOIN,
2703 p2p->pd_force_freq);
6b56cc2d
JS		 2704 return;
2705 }
2706}
2707
2708
b22128ef
JM		 2709static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
2710{
ed496f13 2711 p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
b22128ef 2712 success);
6b56cc2d
JS		 2713
2714 /*
2715 * Postpone resetting the pending action state till after we actually
2716 * time out. This allows us to take some action like notifying any
2717 * interested parties about no response to the request.
2718 *
2719 * When the timer (below) goes off we check in IDLE, SEARCH, or
2720 * LISTEN_ONLY state, which are the only allowed states to issue a PD
2721 * requests in, if this was still pending and then raise notification.
2722 */
b22128ef
JM		 2723
2724 if (!success) {
6b56cc2d
JS		 2725 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2726
488f4a71
JM		 2727 if (p2p->user_initiated_pd &&
2728 (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
2729 {
2730 /* Retry request from timeout to avoid busy loops */
2731 p2p->pending_action_state = P2P_PENDING_PD;
2732 p2p_set_timeout(p2p, 0, 50000);
2733 } else if (p2p->state != P2P_IDLE)
b22128ef 2734 p2p_continue_find(p2p);
6b56cc2d
JS		 2735 else if (p2p->user_initiated_pd) {
2736 p2p->pending_action_state = P2P_PENDING_PD;
2737 p2p_set_timeout(p2p, 0, 300000);
2738 }
b22128ef
JM		 2739 return;
2740 }
2741
6b56cc2d
JS		 2742 /*
2743 * This postponing, of resetting pending_action_state, needs to be
2744 * done only for user initiated PD requests and not internal ones.
2745 */
2746 if (p2p->user_initiated_pd)
2747 p2p->pending_action_state = P2P_PENDING_PD;
2748 else
2749 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2750
b22128ef
JM		 2751 /* Wait for response from the peer */
2752 if (p2p->state == P2P_SEARCH)
2753 p2p_set_state(p2p, P2P_PD_DURING_FIND);
2754 p2p_set_timeout(p2p, 0, 200000);
2755}
2756
2757
2758int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
acb69cec 2759 struct os_reltime *rx_time, int level, const u8 *ies,
3dfd0484 2760 size_t ies_len)
b22128ef 2761{
acb69cec 2762 if (os_reltime_before(rx_time, &p2p->find_start)) {
a5b5e830
JM		 2763 /*
2764 * The driver may have cached (e.g., in cfg80211 BSS table) the
2765 * scan results for relatively long time. To avoid reporting
2766 * stale information, update P2P peers only based on results
2767 * that have based on frames received after the last p2p_find
2768 * operation was started.
2769 */
ed496f13
JM		 2770 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
2771 " (rx_time=%u.%06u)",
a5b5e830
JM		 2772 MAC2STR(bssid), (unsigned int) rx_time->sec,
2773 (unsigned int) rx_time->usec);
2774 return 0;
2775 }
2776
c5f10e80 2777 p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
b22128ef 2778
b22128ef
JM		 2779 return 0;
2780}
2781
2782
2783void p2p_scan_res_handled(struct p2p_data *p2p)
2784{
2785 if (!p2p->p2p_scan_running) {
ed496f13 2786 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
b22128ef
JM		 2787 }
2788 p2p->p2p_scan_running = 0;
2789 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2790
2791 if (p2p_run_after_scan(p2p))
2792 return;
2793 if (p2p->state == P2P_SEARCH)
2794 p2p_continue_find(p2p);
2795}
2796
2797
6d92fa6e 2798void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
b22128ef 2799{
9675ce35
JM		 2800 u8 *len;
2801
2802#ifdef CONFIG_WIFI_DISPLAY
2803 if (p2p->wfd_ie_probe_req)
2804 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
2805#endif /* CONFIG_WIFI_DISPLAY */
2806
2807 len = p2p_buf_add_ie_hdr(ies);
18485b54
MH		 2808 p2p_buf_add_capability(ies, p2p->dev_capab &
2809 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
6d92fa6e
JM		 2810 if (dev_id)
2811 p2p_buf_add_device_id(ies, dev_id);
b22128ef
JM		 2812 if (p2p->cfg->reg_class && p2p->cfg->channel)
2813 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
2814 p2p->cfg->reg_class,
2815 p2p->cfg->channel);
2816 if (p2p->ext_listen_interval)
2817 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
2818 p2p->ext_listen_interval);
2819 /* TODO: p2p_buf_add_operating_channel() if GO */
2820 p2p_buf_update_ie_hdr(ies, len);
2821}
2822
2823
206e1f42
JM		 2824size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
2825{
9675ce35
JM		 2826 size_t len = 100;
2827
2828#ifdef CONFIG_WIFI_DISPLAY
2829 if (p2p && p2p->wfd_ie_probe_req)
2830 len += wpabuf_len(p2p->wfd_ie_probe_req);
2831#endif /* CONFIG_WIFI_DISPLAY */
2832
2833 return len;
206e1f42
JM		 2834}
2835
2836
b22128ef
JM		 2837int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
2838{
2839 return p2p_attr_text(p2p_ie, buf, end);
2840}
2841
2842
2843static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
2844{
2845 struct p2p_device *dev = p2p->go_neg_peer;
fb8984fd 2846 int timeout;
b22128ef 2847
ed496f13 2848 p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
b22128ef
JM		 2849
2850 if (dev == NULL) {
ed496f13 2851 p2p_dbg(p2p, "No pending GO Negotiation");
b22128ef
JM		 2852 return;
2853 }
2854
2855 if (success) {
b22128ef
JM		 2856 if (dev->flags & P2P_DEV_USER_REJECTED) {
2857 p2p_set_state(p2p, P2P_IDLE);
2858 return;
2859 }
a1d2ab32
NKG		 2860 } else if (dev->go_neg_req_sent) {
2861 /* Cancel the increment from p2p_connect_send() on failure */
2862 dev->go_neg_req_sent--;
b22128ef
JM		 2863 }
2864
2865 if (!success &&
c5db8e51 2866 (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
b22128ef 2867 !is_zero_ether_addr(dev->member_in_go_dev)) {
ed496f13 2868 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
c5db8e51 2869 MAC2STR(dev->info.p2p_device_addr));
b22128ef
JM		 2870 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2871 p2p_send_dev_disc_req(p2p, dev);
2872 return;
2873 }
2874
2875 /*
2876 * Use P2P find, if needed, to find the other device from its listen
2877 * channel.
2878 */
2879 p2p_set_state(p2p, P2P_CONNECT);
fb8984fd
JM		 2880 timeout = success ? 500000 : 100000;
2881 if (!success && p2p->go_neg_peer &&
2882 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
2883 unsigned int r;
2884 /*
2885 * Peer is expected to wait our response and we will skip the
2886 * listen phase. Add some randomness to the wait time here to
2887 * make it less likely to hit cases where we could end up in
2888 * sync with peer not listening.
2889 */
2890 os_get_random((u8 *) &r, sizeof(r));
2891 timeout += r % 100000;
2892 }
2893 p2p_set_timeout(p2p, 0, timeout);
b22128ef
JM		 2894}
2895
2896
2897static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
2898{
ed496f13 2899 p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
b22128ef
JM		 2900 success);
2901 if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
ed496f13 2902 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
b22128ef
JM		 2903 return;
2904 }
2905 p2p_set_state(p2p, P2P_CONNECT);
8e4839ce 2906 p2p_set_timeout(p2p, 0, 500000);
b22128ef
JM		 2907}
2908
2909
7800d45c
JM		 2910static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
2911 const u8 *addr)
b22128ef 2912{
ed496f13 2913 p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
fbe70272
JM		 2914 if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
2915 p2p_go_neg_failed(p2p, p2p->go_neg_peer,
2916 p2p->go_neg_peer->status);
7800d45c
JM		 2917 } else if (success) {
2918 struct p2p_device *dev;
2919 dev = p2p_get_device(p2p, addr);
2920 if (dev &&
2921 dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
2922 dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
fbe70272 2923 }
b22128ef
JM		 2924}
2925
2926
93b7ddd0
JM		 2927static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
2928 enum p2p_send_action_result result)
b22128ef
JM		 2929{
2930 struct p2p_device *dev;
2931
ed496f13 2932 p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
b22128ef 2933 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
93b7ddd0
JM		 2934 if (result == P2P_SEND_ACTION_FAILED) {
2935 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2936 return;
2937 }
2938 if (result == P2P_SEND_ACTION_NO_ACK) {
b22128ef
JM		 2939 /*
2940 * It looks like the TX status for GO Negotiation Confirm is
2941 * often showing failure even when the peer has actually
2942 * received the frame. Since the peer may change channels
2943 * immediately after having received the frame, we may not see
2944 * an Ack for retries, so just dropping a single frame may
2945 * trigger this. To allow the group formation to succeed if the
2946 * peer did indeed receive the frame, continue regardless of
2947 * the TX status.
2948 */
ed496f13 2949 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
b22128ef
JM		 2950 }
2951
2952 dev = p2p->go_neg_peer;
2953 if (dev == NULL)
2954 return;
2955
2956 p2p_go_complete(p2p, dev);
2957}
2958
2959
2960void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
93b7ddd0
JM		 2961 const u8 *src, const u8 *bssid,
2962 enum p2p_send_action_result result)
b22128ef
JM		 2963{
2964 enum p2p_pending_action_state state;
93b7ddd0 2965 int success;
b22128ef 2966
ed496f13 2967 p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
93b7ddd0 2968 " src=" MACSTR " bssid=" MACSTR " result=%d",
b22128ef 2969 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
93b7ddd0
JM		 2970 MAC2STR(bssid), result);
2971 success = result == P2P_SEND_ACTION_SUCCESS;
b22128ef
JM		 2972 state = p2p->pending_action_state;
2973 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2974 switch (state) {
2975 case P2P_NO_PENDING_ACTION:
63a965c3
JM		 2976 if (p2p->after_scan_tx_in_progress) {
2977 p2p->after_scan_tx_in_progress = 0;
2978 if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
2979 p2p_run_after_scan(p2p))
2980 break;
2981 if (p2p->state == P2P_SEARCH) {
ed496f13 2982 p2p_dbg(p2p, "Continue find after after_scan_tx completion");
63a965c3
JM		 2983 p2p_continue_find(p2p);
2984 }
2985 }
b22128ef
JM		 2986 break;
2987 case P2P_PENDING_GO_NEG_REQUEST:
2988 p2p_go_neg_req_cb(p2p, success);
2989 break;
2990 case P2P_PENDING_GO_NEG_RESPONSE:
2991 p2p_go_neg_resp_cb(p2p, success);
2992 break;
2993 case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
7800d45c 2994 p2p_go_neg_resp_failure_cb(p2p, success, dst);
b22128ef
JM		 2995 break;
2996 case P2P_PENDING_GO_NEG_CONFIRM:
93b7ddd0 2997 p2p_go_neg_conf_cb(p2p, result);
b22128ef
JM		 2998 break;
2999 case P2P_PENDING_SD:
3000 p2p_sd_cb(p2p, success);
3001 break;
3002 case P2P_PENDING_PD:
3003 p2p_prov_disc_cb(p2p, success);
3004 break;
3005 case P2P_PENDING_INVITATION_REQUEST:
3006 p2p_invitation_req_cb(p2p, success);
3007 break;
3008 case P2P_PENDING_INVITATION_RESPONSE:
3009 p2p_invitation_resp_cb(p2p, success);
3010 break;
3011 case P2P_PENDING_DEV_DISC_REQUEST:
3012 p2p_dev_disc_req_cb(p2p, success);
3013 break;
3014 case P2P_PENDING_DEV_DISC_RESPONSE:
3015 p2p_dev_disc_resp_cb(p2p, success);
3016 break;
3017 case P2P_PENDING_GO_DISC_REQ:
3018 p2p_go_disc_req_cb(p2p, success);
3019 break;
3020 }
63a965c3
JM		 3021
3022 p2p->after_scan_tx_in_progress = 0;
b22128ef
JM		 3023}
3024
3025
3026void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3027 unsigned int duration)
3028{
3029 if (freq == p2p->pending_client_disc_freq) {
ed496f13 3030 p2p_dbg(p2p, "Client discoverability remain-awake completed");
b22128ef
JM		 3031 p2p->pending_client_disc_freq = 0;
3032 return;
3033 }
3034
3035 if (freq != p2p->pending_listen_freq) {
ed496f13 3036 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
b22128ef
JM		 3037 freq, duration, p2p->pending_listen_freq);
3038 return;
3039 }
3040
ed496f13 3041 p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
b22128ef
JM		 3042 p2p->pending_listen_sec, p2p->pending_listen_usec,
3043 p2p->pending_listen_freq);
3044 p2p->in_listen = 1;
0b8889d8 3045 p2p->drv_in_listen = freq;
b22128ef
JM		 3046 if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3047 /*
3048 * Add 20 msec extra wait to avoid race condition with driver
3049 * remain-on-channel end event, i.e., give driver more time to
3050 * complete the operation before our timeout expires.
3051 */
3052 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3053 p2p->pending_listen_usec + 20000);
3054 }
3055
3056 p2p->pending_listen_freq = 0;
3057}
3058
3059
3060int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3061{
ed496f13 3062 p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
b22128ef
JM		 3063 p2p->drv_in_listen = 0;
3064 if (p2p->in_listen)
3065 return 0; /* Internal timeout will trigger the next step */
3066
3067 if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
e24cf97c 3068 if (p2p->go_neg_peer->connect_reqs >= 120) {
ed496f13 3069 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
e24cf97c
JM		 3070 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3071 return 0;
3072 }
3073
b22128ef
JM		 3074 p2p_set_state(p2p, P2P_CONNECT);
3075 p2p_connect_send(p2p, p2p->go_neg_peer);
3076 return 1;
3077 } else if (p2p->state == P2P_SEARCH) {
59acfe87
JM		 3078 if (p2p->p2p_scan_running) {
3079 /*
3080 * Search is already in progress. This can happen if
3081 * an Action frame RX is reported immediately after
3082 * the end of a remain-on-channel operation and the
3083 * response frame to that is sent using an offchannel
3084 * operation while in p2p_find. Avoid an attempt to
3085 * restart a scan here.
3086 */
ed496f13 3087 p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
59acfe87
JM		 3088 return 1;
3089 }
3fe8b68d
JM		 3090 if (p2p->pending_listen_freq) {
3091 /*
3092 * Better wait a bit if the driver is unable to start
3093 * offchannel operation for some reason. p2p_search()
3094 * will be started from internal timeout.
3095 */
ed496f13 3096 p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3fe8b68d
JM		 3097 p2p_set_timeout(p2p, 0, 100000);
3098 return 1;
3099 }
37448ede 3100 if (p2p->search_delay) {
ed496f13 3101 p2p_dbg(p2p, "Delay search operation by %u ms",
37448ede
JM		 3102 p2p->search_delay);
3103 p2p_set_timeout(p2p, p2p->search_delay / 1000,
3104 (p2p->search_delay % 1000) * 1000);
3105 return 1;
3106 }
b22128ef
JM		 3107 p2p_search(p2p);
3108 return 1;
3109 }
3110
3111 return 0;
3112}
3113
3114
3115static void p2p_timeout_connect(struct p2p_data *p2p)
3116{
3117 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
579a8098
JM		 3118 if (p2p->go_neg_peer &&
3119 (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
ed496f13 3120 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
579a8098
JM		 3121 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3122 return;
3123 }
fb8984fd
JM		 3124 if (p2p->go_neg_peer &&
3125 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3126 p2p->go_neg_peer->connect_reqs < 120) {
ed496f13 3127 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
fb8984fd
JM		 3128 p2p_connect_send(p2p, p2p->go_neg_peer);
3129 return;
3130 }
fdd48ff6
JM		 3131 if (p2p->go_neg_peer && p2p->go_neg_peer->oob_go_neg_freq > 0) {
3132 p2p_dbg(p2p, "Skip connect-listen since GO Neg channel known (OOB)");
3133 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3134 p2p_set_timeout(p2p, 0, 30000);
3135 return;
3136 }
b22128ef 3137 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
96beff11 3138 p2p_listen_in_find(p2p, 0);
b22128ef
JM		 3139}
3140
3141
3142static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3143{
3144 if (p2p->go_neg_peer) {
3145 if (p2p->drv_in_listen) {
ed496f13 3146 p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
b22128ef
JM		 3147 return;
3148 }
9dac8c3e
FM		 3149
3150 if (p2p->go_neg_peer->connect_reqs >= 120) {
ed496f13 3151 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
9dac8c3e
FM		 3152 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3153 return;
3154 }
3155
b22128ef
JM		 3156 p2p_set_state(p2p, P2P_CONNECT);
3157 p2p_connect_send(p2p, p2p->go_neg_peer);
3158 } else
3159 p2p_set_state(p2p, P2P_IDLE);
3160}
3161
3162
3163static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3164{
b22128ef 3165 p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
a2d63657
RR		 3166
3167 if (p2p->cfg->is_concurrent_session_active &&
3168 p2p->cfg->is_concurrent_session_active(p2p->cfg->cb_ctx))
3169 p2p_set_timeout(p2p, 0, 500000);
3170 else
3171 p2p_set_timeout(p2p, 0, 200000);
b22128ef
JM		 3172}
3173
3174
3175static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3176{
3177 struct p2p_device *dev = p2p->go_neg_peer;
3178
3179 if (dev == NULL) {
ed496f13 3180 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
b22128ef
JM		 3181 return;
3182 }
3183
3184 dev->wait_count++;
3185 if (dev->wait_count >= 120) {
ed496f13 3186 p2p_dbg(p2p, "Timeout on waiting peer to become ready for GO Negotiation");
b22128ef
JM		 3187 p2p_go_neg_failed(p2p, dev, -1);
3188 return;
3189 }
3190
ed496f13 3191 p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
b22128ef 3192 p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
96beff11 3193 p2p_listen_in_find(p2p, 0);
b22128ef
JM		 3194}
3195
3196
3197static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3198{
ed496f13 3199 p2p_dbg(p2p, "Service Discovery Query timeout");
b22128ef
JM		 3200 if (p2p->sd_peer) {
3201 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3202 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
3203 p2p->sd_peer = NULL;
3204 }
3205 p2p_continue_find(p2p);
3206}
3207
3208
3209static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3210{
ed496f13 3211 p2p_dbg(p2p, "Provision Discovery Request timeout");
b22128ef
JM		 3212 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3213 p2p_continue_find(p2p);
3214}
3215
3216
6b56cc2d
JS		 3217static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3218{
3219 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3220
3221 /*
3222 * For user initiated PD requests that we have not gotten any responses
3223 * for while in IDLE state, we retry them a couple of times before
3224 * giving up.
3225 */
3226 if (!p2p->user_initiated_pd)
3227 return;
3228
ed496f13 3229 p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
6b56cc2d
JS		 3230
3231 if (p2p->pd_retries) {
3232 p2p->pd_retries--;
3233 p2p_retry_pd(p2p);
3234 } else {
175171ac
JM		 3235 struct p2p_device *dev;
3236 int for_join = 0;
3237
3238 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3239 if (os_memcmp(p2p->pending_pd_devaddr,
3240 dev->info.p2p_device_addr, ETH_ALEN) != 0)
3241 continue;
3242 if (dev->req_config_methods &&
3243 (dev->flags & P2P_DEV_PD_FOR_JOIN))
3244 for_join = 1;
3245 }
3246
349b213c
JS		 3247 if (p2p->cfg->prov_disc_fail)
3248 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
3249 p2p->pending_pd_devaddr,
175171ac
JM		 3250 for_join ?
3251 P2P_PROV_DISC_TIMEOUT_JOIN :
349b213c 3252 P2P_PROV_DISC_TIMEOUT);
6b56cc2d
JS		 3253 p2p_reset_pending_pd(p2p);
3254 }
3255}
3256
3257
b22128ef
JM		 3258static void p2p_timeout_invite(struct p2p_data *p2p)
3259{
3260 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3261 p2p_set_state(p2p, P2P_INVITE_LISTEN);
04d8dad5
JM		 3262 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
3263 /*
3264 * Better remain on operating channel instead of listen channel
3265 * when running a group.
3266 */
ed496f13 3267 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
04d8dad5
JM		 3268 p2p_set_timeout(p2p, 0, 100000);
3269 return;
3270 }
96beff11 3271 p2p_listen_in_find(p2p, 0);
b22128ef
JM		 3272}
3273
3274
3275static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3276{
3277 if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3278 p2p_set_state(p2p, P2P_INVITE);
3279 p2p_invite_send(p2p, p2p->invite_peer,
3280 p2p->invite_go_dev_addr);
3281 } else {
3282 if (p2p->invite_peer) {
ed496f13 3283 p2p_dbg(p2p, "Invitation Request retry limit reached");
b22128ef
JM		 3284 if (p2p->cfg->invitation_result)
3285 p2p->cfg->invitation_result(
dbca75f8 3286 p2p->cfg->cb_ctx, -1, NULL, NULL,
dcd25d4c
VKE		 3287 p2p->invite_peer->info.p2p_device_addr,
3288 0);
b22128ef
JM		 3289 }
3290 p2p_set_state(p2p, P2P_IDLE);
3291 }
3292}
3293
3294
3295static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3296{
3297 struct p2p_data *p2p = eloop_ctx;
3298
ed496f13 3299 p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
b22128ef
JM		 3300
3301 p2p->in_listen = 0;
3302
3303 switch (p2p->state) {
3304 case P2P_IDLE:
6b56cc2d
JS		 3305 /* Check if we timed out waiting for PD req */
3306 if (p2p->pending_action_state == P2P_PENDING_PD)
3307 p2p_timeout_prov_disc_req(p2p);
b22128ef
JM		 3308 break;
3309 case P2P_SEARCH:
6b56cc2d
JS		 3310 /* Check if we timed out waiting for PD req */
3311 if (p2p->pending_action_state == P2P_PENDING_PD)
3312 p2p_timeout_prov_disc_req(p2p);
37448ede 3313 if (p2p->search_delay && !p2p->in_search_delay) {
ed496f13 3314 p2p_dbg(p2p, "Delay search operation by %u ms",
37448ede
JM		 3315 p2p->search_delay);
3316 p2p->in_search_delay = 1;
3317 p2p_set_timeout(p2p, p2p->search_delay / 1000,
3318 (p2p->search_delay % 1000) * 1000);
3319 break;
3320 }
3321 p2p->in_search_delay = 0;
b22128ef
JM		 3322 p2p_search(p2p);
3323 break;
3324 case P2P_CONNECT:
3325 p2p_timeout_connect(p2p);
3326 break;
3327 case P2P_CONNECT_LISTEN:
3328 p2p_timeout_connect_listen(p2p);
3329 break;
3330 case P2P_GO_NEG:
3331 break;
3332 case P2P_LISTEN_ONLY:
6b56cc2d
JS		 3333 /* Check if we timed out waiting for PD req */
3334 if (p2p->pending_action_state == P2P_PENDING_PD)
3335 p2p_timeout_prov_disc_req(p2p);
3336
b22128ef 3337 if (p2p->ext_listen_only) {
ed496f13 3338 p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
b22128ef
JM		 3339 p2p->ext_listen_only = 0;
3340 p2p_set_state(p2p, P2P_IDLE);
3341 }
3342 break;
3343 case P2P_WAIT_PEER_CONNECT:
3344 p2p_timeout_wait_peer_connect(p2p);
3345 break;
3346 case P2P_WAIT_PEER_IDLE:
3347 p2p_timeout_wait_peer_idle(p2p);
3348 break;
3349 case P2P_SD_DURING_FIND:
3350 p2p_timeout_sd_during_find(p2p);
3351 break;
3352 case P2P_PROVISIONING:
3353 break;
3354 case P2P_PD_DURING_FIND:
3355 p2p_timeout_prov_disc_during_find(p2p);
3356 break;
3357 case P2P_INVITE:
3358 p2p_timeout_invite(p2p);
3359 break;
3360 case P2P_INVITE_LISTEN:
3361 p2p_timeout_invite_listen(p2p);
3362 break;
3363 }
3364}
3365
3366
3367int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
3368{
3369 struct p2p_device *dev;
3370
3371 dev = p2p_get_device(p2p, peer_addr);
ed496f13
JM		 3372 p2p_dbg(p2p, "Local request to reject connection attempts by peer "
3373 MACSTR, MAC2STR(peer_addr));
b22128ef 3374 if (dev == NULL) {
ed496f13 3375 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
b22128ef
JM		 3376 return -1;
3377 }
3378 dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
3379 dev->flags |= P2P_DEV_USER_REJECTED;
3380 return 0;
3381}
3382
3383
e5a359cf 3384const char * p2p_wps_method_text(enum p2p_wps_method method)
b22128ef
JM		 3385{
3386 switch (method) {
3387 case WPS_NOT_READY:
3388 return "not-ready";
b22128ef
JM		 3389 case WPS_PIN_DISPLAY:
3390 return "Display";
3391 case WPS_PIN_KEYPAD:
3392 return "Keypad";
3393 case WPS_PBC:
3394 return "PBC";
c00ab85f
JM		 3395 case WPS_NFC:
3396 return "NFC";
b22128ef
JM		 3397 }
3398
3399 return "??";
3400}
3401
3402
3403static const char * p2p_go_state_text(enum p2p_go_state go_state)
3404{
3405 switch (go_state) {
3406 case UNKNOWN_GO:
3407 return "unknown";
3408 case LOCAL_GO:
3409 return "local";
3410 case REMOTE_GO:
3411 return "remote";
3412 }
3413
3414 return "??";
3415}
3416
3417
b3ffc80b
JM		 3418const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
3419 const u8 *addr, int next)
b22128ef
JM		 3420{
3421 struct p2p_device *dev;
b22128ef
JM		 3422
3423 if (addr)
3424 dev = p2p_get_device(p2p, addr);
3425 else
3426 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3427
3428 if (dev && next) {
3429 dev = dl_list_first(&dev->list, struct p2p_device, list);
3430 if (&dev->list == &p2p->devices)
3431 dev = NULL;
3432 }
3433
3434 if (dev == NULL)
b3ffc80b
JM		 3435 return NULL;
3436
3437 return &dev->info;
3438}
3439
3440
3441int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
3442 char *buf, size_t buflen)
3443{
3444 struct p2p_device *dev;
3445 int res;
3446 char *pos, *end;
acb69cec 3447 struct os_reltime now;
b3ffc80b
JM		 3448
3449 if (info == NULL)
b22128ef
JM		 3450 return -1;
3451
b3ffc80b
JM		 3452 dev = (struct p2p_device *) (((u8 *) info) -
3453 offsetof(struct p2p_device, info));
3454
b22128ef
JM		 3455 pos = buf;
3456 end = buf + buflen;
3457
acb69cec 3458 os_get_reltime(&now);
b22128ef
JM		 3459 res = os_snprintf(pos, end - pos,
3460 "age=%d\n"
3461 "listen_freq=%d\n"
b22128ef
JM		 3462 "wps_method=%s\n"
3463 "interface_addr=" MACSTR "\n"
3464 "member_in_go_dev=" MACSTR "\n"
3465 "member_in_go_iface=" MACSTR "\n"
b22128ef
JM		 3466 "go_neg_req_sent=%d\n"
3467 "go_state=%s\n"
3468 "dialog_token=%u\n"
3469 "intended_addr=" MACSTR "\n"
3470 "country=%c%c\n"
3471 "oper_freq=%d\n"
3472 "req_config_methods=0x%x\n"
10c4edde 3473 "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
b22128ef
JM		 3474 "status=%d\n"
3475 "wait_count=%u\n"
3476 "invitation_reqs=%u\n",
3477 (int) (now.sec - dev->last_seen.sec),
3478 dev->listen_freq,
b22128ef
JM		 3479 p2p_wps_method_text(dev->wps_method),
3480 MAC2STR(dev->interface_addr),
3481 MAC2STR(dev->member_in_go_dev),
3482 MAC2STR(dev->member_in_go_iface),
b22128ef
JM		 3483 dev->go_neg_req_sent,
3484 p2p_go_state_text(dev->go_state),
3485 dev->dialog_token,
3486 MAC2STR(dev->intended_addr),
3487 dev->country[0] ? dev->country[0] : '_',
3488 dev->country[1] ? dev->country[1] : '_',
3489 dev->oper_freq,
3490 dev->req_config_methods,
3491 dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
3492 "[PROBE_REQ_ONLY]" : "",
3493 dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
3494 dev->flags & P2P_DEV_NOT_YET_READY ?
3495 "[NOT_YET_READY]" : "",
3496 dev->flags & P2P_DEV_SD_INFO ? "[SD_INFO]" : "",
3497 dev->flags & P2P_DEV_SD_SCHEDULE ? "[SD_SCHEDULE]" :
3498 "",
3499 dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
3500 "[PD_PEER_DISPLAY]" : "",
3501 dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
3502 "[PD_PEER_KEYPAD]" : "",
3503 dev->flags & P2P_DEV_USER_REJECTED ?
3504 "[USER_REJECTED]" : "",
3505 dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
3506 "[PEER_WAITING_RESPONSE]" : "",
3507 dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
3508 "[PREFER_PERSISTENT_GROUP]" : "",
3509 dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
3510 "[WAIT_GO_NEG_RESPONSE]" : "",
3511 dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
3512 "[WAIT_GO_NEG_CONFIRM]" : "",
3513 dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
3514 "[GROUP_CLIENT_ONLY]" : "",
d5b20a73 3515 dev->flags & P2P_DEV_FORCE_FREQ ?
10c4edde
JM		 3516 "[FORCE_FREQ]" : "",
3517 dev->flags & P2P_DEV_PD_FOR_JOIN ?
3518 "[PD_FOR_JOIN]" : "",
b22128ef
JM		 3519 dev->status,
3520 dev->wait_count,
3521 dev->invitation_reqs);
3522 if (res < 0 || res >= end - pos)
3523 return pos - buf;
3524 pos += res;
3525
3526 if (dev->ext_listen_period) {
3527 res = os_snprintf(pos, end - pos,
3528 "ext_listen_period=%u\n"
3529 "ext_listen_interval=%u\n",
3530 dev->ext_listen_period,
3531 dev->ext_listen_interval);
3532 if (res < 0 || res >= end - pos)
3533 return pos - buf;
3534 pos += res;
3535 }
3536
3537 if (dev->oper_ssid_len) {
3538 res = os_snprintf(pos, end - pos,
3539 "oper_ssid=%s\n",
3540 wpa_ssid_txt(dev->oper_ssid,
3541 dev->oper_ssid_len));
3542 if (res < 0 || res >= end - pos)
3543 return pos - buf;
3544 pos += res;
3545 }
3546
9675ce35
JM		 3547#ifdef CONFIG_WIFI_DISPLAY
3548 if (dev->info.wfd_subelems) {
3549 res = os_snprintf(pos, end - pos, "wfd_subelems=");
3550 if (res < 0 || res >= end - pos)
3551 return pos - buf;
3552 pos += res;
3553
3554 pos += wpa_snprintf_hex(pos, end - pos,
3555 wpabuf_head(dev->info.wfd_subelems),
3556 wpabuf_len(dev->info.wfd_subelems));
3557
3558 res = os_snprintf(pos, end - pos, "\n");
3559 if (res < 0 || res >= end - pos)
3560 return pos - buf;
3561 pos += res;
3562 }
3563#endif /* CONFIG_WIFI_DISPLAY */
3564
b22128ef
JM		 3565 return pos - buf;
3566}
3567
3568
b3bcc0f5
JM		 3569int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
3570{
3571 return p2p_get_device(p2p, addr) != NULL;
3572}
3573
3574
b22128ef
JM		 3575void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
3576{
3577 if (enabled) {
ed496f13 3578 p2p_dbg(p2p, "Client discoverability enabled");
b22128ef
JM		 3579 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3580 } else {
ed496f13 3581 p2p_dbg(p2p, "Client discoverability disabled");
b22128ef
JM		 3582 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3583 }
3584}
3585
3586
3587static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
3588 u32 duration2, u32 interval2)
3589{
3590 struct wpabuf *req;
3591 struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
3592 u8 *len;
3593
3594 req = wpabuf_alloc(100);
3595 if (req == NULL)
3596 return NULL;
3597
3598 if (duration1 || interval1) {
3599 os_memset(&desc1, 0, sizeof(desc1));
3600 desc1.count_type = 1;
3601 desc1.duration = duration1;
3602 desc1.interval = interval1;
3603 ptr1 = &desc1;
3604
3605 if (duration2 || interval2) {
3606 os_memset(&desc2, 0, sizeof(desc2));
3607 desc2.count_type = 2;
3608 desc2.duration = duration2;
3609 desc2.interval = interval2;
3610 ptr2 = &desc2;
3611 }
3612 }
3613
3614 p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
3615 len = p2p_buf_add_ie_hdr(req);
3616 p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
3617 p2p_buf_update_ie_hdr(req, len);
3618
3619 return req;
3620}
3621
3622
3623int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
3624 const u8 *own_interface_addr, unsigned int freq,
3625 u32 duration1, u32 interval1, u32 duration2,
3626 u32 interval2)
3627{
3628 struct wpabuf *req;
3629
ed496f13
JM		 3630 p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
3631 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
3632 "dur2=%u int2=%u",
b22128ef
JM		 3633 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
3634 freq, duration1, interval1, duration2, interval2);
3635
3636 req = p2p_build_presence_req(duration1, interval1, duration2,
3637 interval2);
3638 if (req == NULL)
3639 return -1;
3640
3641 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3f9285ff
JM		 3642 if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
3643 go_interface_addr,
3644 wpabuf_head(req), wpabuf_len(req), 200) < 0) {
ed496f13 3645 p2p_dbg(p2p, "Failed to send Action frame");
b22128ef
JM		 3646 }
3647 wpabuf_free(req);
3648
3649 return 0;
3650}
3651
3652
3653static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
3654 size_t noa_len, u8 dialog_token)
3655{
3656 struct wpabuf *resp;
3657 u8 *len;
3658
3659 resp = wpabuf_alloc(100 + noa_len);
3660 if (resp == NULL)
3661 return NULL;
3662
3663 p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
3664 len = p2p_buf_add_ie_hdr(resp);
3665 p2p_buf_add_status(resp, status);
3666 if (noa) {
3667 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
3668 wpabuf_put_le16(resp, noa_len);
3669 wpabuf_put_data(resp, noa, noa_len);
3670 } else
3671 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
3672 p2p_buf_update_ie_hdr(resp, len);
3673
3674 return resp;
3675}
3676
3677
3678static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
3679 const u8 *sa, const u8 *data, size_t len,
3680 int rx_freq)
3681{
3682 struct p2p_message msg;
3683 u8 status;
3684 struct wpabuf *resp;
3685 size_t g;
3686 struct p2p_group *group = NULL;
3687 int parsed = 0;
3688 u8 noa[50];
3689 int noa_len;
3690
ed496f13 3691 p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
b22128ef
JM		 3692
3693 for (g = 0; g < p2p->num_groups; g++) {
3694 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
3695 ETH_ALEN) == 0) {
3696 group = p2p->groups[g];
3697 break;
3698 }
3699 }
3700 if (group == NULL) {
ed496f13 3701 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
b22128ef
JM		 3702 MACSTR, MAC2STR(da));
3703 return;
3704 }
3705
3706 if (p2p_parse(data, len, &msg) < 0) {
ed496f13 3707 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
b22128ef
JM		 3708 status = P2P_SC_FAIL_INVALID_PARAMS;
3709 goto fail;
3710 }
3711 parsed = 1;
3712
3713 if (msg.noa == NULL) {
ed496f13 3714 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
b22128ef
JM		 3715 status = P2P_SC_FAIL_INVALID_PARAMS;
3716 goto fail;
3717 }
3718
3719 status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
3720
3721fail:
3722 if (p2p->cfg->get_noa)
3723 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
3724 sizeof(noa));
3725 else
3726 noa_len = -1;
3727 resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
3728 noa_len > 0 ? noa_len : 0,
3729 msg.dialog_token);
3730 if (parsed)
3731 p2p_parse_free(&msg);
3732 if (resp == NULL)
3733 return;
3734
3735 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3f9285ff
JM		 3736 if (p2p_send_action(p2p, rx_freq, sa, da, da,
3737 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
ed496f13 3738 p2p_dbg(p2p, "Failed to send Action frame");
b22128ef
JM		 3739 }
3740 wpabuf_free(resp);
3741}
3742
3743
3744static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
3745 const u8 *sa, const u8 *data, size_t len)
3746{
3747 struct p2p_message msg;
3748
ed496f13 3749 p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
b22128ef
JM		 3750
3751 if (p2p_parse(data, len, &msg) < 0) {
ed496f13 3752 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
b22128ef
JM		 3753 return;
3754 }
3755
3756 if (msg.status == NULL || msg.noa == NULL) {
ed496f13 3757 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
b22128ef
JM		 3758 p2p_parse_free(&msg);
3759 return;
3760 }
3761
c64e3a08
JM		 3762 if (p2p->cfg->presence_resp) {
3763 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status,
3764 msg.noa, msg.noa_len);
3765 }
3766
b22128ef 3767 if (*msg.status) {
ed496f13 3768 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
b22128ef
JM		 3769 *msg.status);
3770 p2p_parse_free(&msg);
3771 return;
3772 }
3773
ed496f13 3774 p2p_dbg(p2p, "P2P Presence Request was accepted");
b22128ef
JM		 3775 wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
3776 msg.noa, msg.noa_len);
3777 /* TODO: process NoA */
3778 p2p_parse_free(&msg);
3779}
3780
3781
3782static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
3783{
3784 struct p2p_data *p2p = eloop_ctx;
3785
3786 if (p2p->ext_listen_interval) {
3787 /* Schedule next extended listen timeout */
3788 eloop_register_timeout(p2p->ext_listen_interval_sec,
3789 p2p->ext_listen_interval_usec,
3790 p2p_ext_listen_timeout, p2p, NULL);
3791 }
3792
f7a69057
JM		 3793 if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
3794 /*
3795 * This should not really happen, but it looks like the Listen
3796 * command may fail is something else (e.g., a scan) was
3797 * running at an inconvenient time. As a workaround, allow new
3798 * Extended Listen operation to be started.
3799 */
ed496f13 3800 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
f7a69057
JM		 3801 p2p->ext_listen_only = 0;
3802 p2p_set_state(p2p, P2P_IDLE);
3803 }
3804
b22128ef 3805 if (p2p->state != P2P_IDLE) {
ed496f13 3806 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
b22128ef
JM		 3807 return;
3808 }
3809
ed496f13 3810 p2p_dbg(p2p, "Extended Listen timeout");
b22128ef
JM		 3811 p2p->ext_listen_only = 1;
3812 if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
ed496f13 3813 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
b22128ef
JM		 3814 p2p->ext_listen_only = 0;
3815 }
3816}
3817
3818
3819int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
3820 unsigned int interval)
3821{
3822 if (period > 65535 || interval > 65535 || period > interval ||
3823 (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
ed496f13
JM		 3824 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
3825 period, interval);
b22128ef
JM		 3826 return -1;
3827 }
3828
3829 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
3830
3831 if (interval == 0) {
ed496f13 3832 p2p_dbg(p2p, "Disabling Extended Listen Timing");
b22128ef
JM		 3833 p2p->ext_listen_period = 0;
3834 p2p->ext_listen_interval = 0;
3835 return 0;
3836 }
3837
ed496f13
JM		 3838 p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
3839 period, interval);
b22128ef
JM		 3840 p2p->ext_listen_period = period;
3841 p2p->ext_listen_interval = interval;
3842 p2p->ext_listen_interval_sec = interval / 1000;
3843 p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
3844
3845 eloop_register_timeout(p2p->ext_listen_interval_sec,
3846 p2p->ext_listen_interval_usec,
3847 p2p_ext_listen_timeout, p2p, NULL);
3848
3849 return 0;
3850}
3851
3852
3853void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3854 const u8 *ie, size_t ie_len)
3855{
3856 struct p2p_message msg;
3857
3858 if (bssid == NULL || ie == NULL)
3859 return;
3860
3861 os_memset(&msg, 0, sizeof(msg));
3862 if (p2p_parse_ies(ie, ie_len, &msg))
3863 return;
3864 if (msg.minor_reason_code == NULL)
3865 return;
3866
ed496f13 3867 p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
b22128ef
JM		 3868 " reason_code=%u minor_reason_code=%u",
3869 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3870
3871 p2p_parse_free(&msg);
3872}
3873
3874
3875void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3876 const u8 *ie, size_t ie_len)
3877{
3878 struct p2p_message msg;
3879
3880 if (bssid == NULL || ie == NULL)
3881 return;
3882
3883 os_memset(&msg, 0, sizeof(msg));
3884 if (p2p_parse_ies(ie, ie_len, &msg))
3885 return;
3886 if (msg.minor_reason_code == NULL)
3887 return;
3888
ed496f13 3889 p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
b22128ef
JM		 3890 " reason_code=%u minor_reason_code=%u",
3891 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3892
3893 p2p_parse_free(&msg);
3894}
3895
3896
3897void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
3898{
3899 if (enabled) {
ed496f13 3900 p2p_dbg(p2p, "Managed P2P Device operations enabled");
b22128ef
JM		 3901 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
3902 } else {
ed496f13 3903 p2p_dbg(p2p, "Managed P2P Device operations disabled");
b22128ef
JM		 3904 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
3905 }
3906}
3907
3908
3909int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel)
3910{
9ccd9165 3911 if (p2p_channel_to_freq(reg_class, channel) < 0)
b22128ef
JM		 3912 return -1;
3913
ed496f13
JM		 3914 p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
3915 reg_class, channel);
b22128ef
JM		 3916 p2p->cfg->reg_class = reg_class;
3917 p2p->cfg->channel = channel;
3918
3919 return 0;
3920}
3921
3922
3923int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
3924{
ed496f13 3925 p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
b22128ef
JM		 3926 if (postfix == NULL) {
3927 p2p->cfg->ssid_postfix_len = 0;
3928 return 0;
3929 }
3930 if (len > sizeof(p2p->cfg->ssid_postfix))
3931 return -1;
3932 os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
3933 p2p->cfg->ssid_postfix_len = len;
3934 return 0;
3935}
3936
3937
2463ba70
JS		 3938int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
3939 int cfg_op_channel)
3940{
9ccd9165 3941 if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
2463ba70
JS		 3942 return -1;
3943
ed496f13
JM		 3944 p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
3945 op_reg_class, op_channel);
2463ba70
JS		 3946 p2p->cfg->op_reg_class = op_reg_class;
3947 p2p->cfg->op_channel = op_channel;
3948 p2p->cfg->cfg_op_channel = cfg_op_channel;
3949 return 0;
3950}
3951
3952
21d996f7
JM		 3953int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
3954 const struct p2p_channel *pref_chan)
3955{
3956 struct p2p_channel *n;
3957
3958 if (pref_chan) {
3959 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
3960 if (n == NULL)
3961 return -1;
3962 os_memcpy(n, pref_chan,
3963 num_pref_chan * sizeof(struct p2p_channel));
3964 } else
3965 n = NULL;
3966
3967 os_free(p2p->cfg->pref_chan);
3968 p2p->cfg->pref_chan = n;
3969 p2p->cfg->num_pref_chan = num_pref_chan;
3970
3971 return 0;
3972}
3973
3974
556b30da
JM		 3975int p2p_set_no_go_freq(struct p2p_data *p2p,
3976 const struct wpa_freq_range_list *list)
3977{
3978 struct wpa_freq_range *tmp;
3979
3980 if (list == NULL || list->num == 0) {
3981 os_free(p2p->no_go_freq.range);
3982 p2p->no_go_freq.range = NULL;
3983 p2p->no_go_freq.num = 0;
3984 return 0;
3985 }
3986
3987 tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
3988 if (tmp == NULL)
3989 return -1;
3990 os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
3991 os_free(p2p->no_go_freq.range);
3992 p2p->no_go_freq.range = tmp;
3993 p2p->no_go_freq.num = list->num;
3994 p2p_dbg(p2p, "Updated no GO chan list");
3995
3996 return 0;
3997}
3998
3999
b22128ef
JM		 4000int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4001 u8 *iface_addr)
4002{
4003 struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4004 if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4005 return -1;
4006 os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4007 return 0;
4008}
80c9582a
JM		 4009
4010
4147a2cc
JM		 4011int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4012 u8 *dev_addr)
4013{
4014 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4015 if (dev == NULL)
4016 return -1;
c5db8e51 4017 os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4147a2cc
JM		 4018 return 0;
4019}
4020
4021
80c9582a
JM		 4022void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4023{
4024 os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4025 if (is_zero_ether_addr(p2p->peer_filter))
ed496f13 4026 p2p_dbg(p2p, "Disable peer filter");
80c9582a 4027 else
ed496f13
JM		 4028 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4029 MAC2STR(p2p->peer_filter));
80c9582a 4030}
72044390
JM		 4031
4032
4033void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4034{
ed496f13 4035 p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
72044390
JM		 4036 if (p2p->cross_connect == enabled)
4037 return;
4038 p2p->cross_connect = enabled;
4039 /* TODO: may need to tear down any action group where we are GO(?) */
4040}
f8d0131a
JM		 4041
4042
4043int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4044{
4045 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4046 if (dev == NULL)
4047 return -1;
4048 if (dev->oper_freq <= 0)
4049 return -1;
4050 return dev->oper_freq;
4051}
0f66abd2
SS		 4052
4053
4054void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4055{
ed496f13 4056 p2p_dbg(p2p, "Intra BSS distribution %s",
0f66abd2
SS		 4057 enabled ? "enabled" : "disabled");
4058 p2p->cfg->p2p_intra_bss = enabled;
4059}
b5c9da8d
JM		 4060
4061
51e9f228
JM		 4062void p2p_update_channel_list(struct p2p_data *p2p,
4063 const struct p2p_channels *chan,
4064 const struct p2p_channels *cli_chan)
b5c9da8d 4065{
ed496f13 4066 p2p_dbg(p2p, "Update channel list");
b5c9da8d 4067 os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
51e9f228
JM		 4068 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4069 os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4070 sizeof(struct p2p_channels));
4071 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
b5c9da8d 4072}
3f9285ff
JM		 4073
4074
4075int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4076 const u8 *src, const u8 *bssid, const u8 *buf,
4077 size_t len, unsigned int wait_time)
4078{
4079 if (p2p->p2p_scan_running) {
ed496f13 4080 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
3f9285ff 4081 if (p2p->after_scan_tx) {
ed496f13 4082 p2p_dbg(p2p, "Dropped previous pending Action frame TX");
3f9285ff
JM		 4083 os_free(p2p->after_scan_tx);
4084 }
4085 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4086 len);
4087 if (p2p->after_scan_tx == NULL)
4088 return -1;
4089 p2p->after_scan_tx->freq = freq;
4090 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4091 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4092 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4093 p2p->after_scan_tx->len = len;
4094 p2p->after_scan_tx->wait_time = wait_time;
4095 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4096 return 0;
4097 }
4098
4099 return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4100 buf, len, wait_time);
4101}
7cfc4ac3
AGS		 4102
4103
4104void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4105 int freq_overall)
4106{
ed496f13
JM		 4107 p2p_dbg(p2p, "Best channel: 2.4 GHz: %d, 5 GHz: %d, overall: %d",
4108 freq_24, freq_5, freq_overall);
7cfc4ac3
AGS		 4109 p2p->best_freq_24 = freq_24;
4110 p2p->best_freq_5 = freq_5;
4111 p2p->best_freq_overall = freq_overall;
4112}
231bbd03
SS		 4113
4114
6cb27aa8
JM		 4115void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4116{
ed496f13 4117 p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
6cb27aa8
JM		 4118 p2p->own_freq_preference = freq;
4119}
4120
4121
231bbd03
SS		 4122const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4123{
4124 if (p2p == NULL || p2p->go_neg_peer == NULL)
4125 return NULL;
c5db8e51 4126 return p2p->go_neg_peer->info.p2p_device_addr;
231bbd03 4127}
c165d81e
JB		 4128
4129
4130const struct p2p_peer_info *
4131p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4132{
4133 struct p2p_device *dev;
4134
4135 if (addr) {
4136 dev = p2p_get_device(p2p, addr);
4137 if (!dev)
4138 return NULL;
4139
4140 if (!next) {
4141 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4142 return NULL;
4143
4144 return &dev->info;
4145 } else {
4146 do {
4147 dev = dl_list_first(&dev->list,
4148 struct p2p_device,
4149 list);
4150 if (&dev->list == &p2p->devices)
4151 return NULL;
4152 } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4153 }
4154 } else {
4155 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4156 if (!dev)
4157 return NULL;
4158 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4159 dev = dl_list_first(&dev->list,
4160 struct p2p_device,
4161 list);
4162 if (&dev->list == &p2p->devices)
4163 return NULL;
4164 }
4165 }
4166
4167 return &dev->info;
4168}
303f60d3
JM		 4169
4170
4171int p2p_in_progress(struct p2p_data *p2p)
4172{
4173 if (p2p == NULL)
4174 return 0;
1b5d4714 4175 if (p2p->state == P2P_SEARCH)
99fcd404 4176 return 2;
fc6997b3 4177 return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
303f60d3 4178}
4f219667
JM		 4179
4180
4181void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
4182 u8 client_timeout)
4183{
4184 if (p2p) {
4185 p2p->go_timeout = go_timeout;
4186 p2p->client_timeout = client_timeout;
4187 }
4188}
99fcd404
JM		 4189
4190
9675ce35
JM		 4191#ifdef CONFIG_WIFI_DISPLAY
4192
4193static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
4194{
4195 size_t g;
4196 struct p2p_group *group;
4197
4198 for (g = 0; g < p2p->num_groups; g++) {
4199 group = p2p->groups[g];
3342c263 4200 p2p_group_force_beacon_update_ies(group);
9675ce35
JM		 4201 }
4202}
4203
4204
4205int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
4206{
4207 wpabuf_free(p2p->wfd_ie_beacon);
4208 p2p->wfd_ie_beacon = ie;
4209 p2p_update_wfd_ie_groups(p2p);
4210 return 0;
4211}
4212
4213
4214int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
4215{
4216 wpabuf_free(p2p->wfd_ie_probe_req);
4217 p2p->wfd_ie_probe_req = ie;
4218 return 0;
4219}
4220
4221
4222int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
4223{
4224 wpabuf_free(p2p->wfd_ie_probe_resp);
4225 p2p->wfd_ie_probe_resp = ie;
4226 p2p_update_wfd_ie_groups(p2p);
4227 return 0;
4228}
4229
4230
4231int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
4232{
4233 wpabuf_free(p2p->wfd_ie_assoc_req);
4234 p2p->wfd_ie_assoc_req = ie;
4235 return 0;
4236}
4237
4238
4239int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
4240{
4241 wpabuf_free(p2p->wfd_ie_invitation);
4242 p2p->wfd_ie_invitation = ie;
4243 return 0;
4244}
4245
4246
4247int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
4248{
4249 wpabuf_free(p2p->wfd_ie_prov_disc_req);
4250 p2p->wfd_ie_prov_disc_req = ie;
4251 return 0;
4252}
4253
4254
4255int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
4256{
4257 wpabuf_free(p2p->wfd_ie_prov_disc_resp);
4258 p2p->wfd_ie_prov_disc_resp = ie;
4259 return 0;
4260}
4261
4262
4263int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
4264{
4265 wpabuf_free(p2p->wfd_ie_go_neg);
4266 p2p->wfd_ie_go_neg = ie;
4267 return 0;
4268}
4269
4270
4271int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
4272{
4273 wpabuf_free(p2p->wfd_dev_info);
4274 if (elem) {
4275 p2p->wfd_dev_info = wpabuf_dup(elem);
4276 if (p2p->wfd_dev_info == NULL)
4277 return -1;
4278 } else
4279 p2p->wfd_dev_info = NULL;
4280
4281 return 0;
4282}
4283
4284
4285int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
4286{
4287 wpabuf_free(p2p->wfd_assoc_bssid);
4288 if (elem) {
4289 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
4290 if (p2p->wfd_assoc_bssid == NULL)
4291 return -1;
4292 } else
4293 p2p->wfd_assoc_bssid = NULL;
4294
4295 return 0;
4296}
4297
4298
4299int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
4300 const struct wpabuf *elem)
4301{
4302 wpabuf_free(p2p->wfd_coupled_sink_info);
4303 if (elem) {
4304 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
4305 if (p2p->wfd_coupled_sink_info == NULL)
4306 return -1;
4307 } else
4308 p2p->wfd_coupled_sink_info = NULL;
4309
4310 return 0;
4311}
4312
4313#endif /* CONFIG_WIFI_DISPLAY */
96beff11
JM		 4314
4315
4316int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
4317 int max_disc_tu)
4318{
4319 if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
4320 return -1;
4321
4322 p2p->min_disc_int = min_disc_int;
4323 p2p->max_disc_int = max_disc_int;
4324 p2p->max_disc_tu = max_disc_tu;
ed496f13
JM		 4325 p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
4326 min_disc_int, max_disc_int, max_disc_tu);
96beff11
JM		 4327
4328 return 0;
4329}
ed496f13
JM		 4330
4331
4332void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
4333{
4334 va_list ap;
4335 char buf[500];
4336
4337 if (!p2p->cfg->debug_print)
4338 return;
4339
4340 va_start(ap, fmt);
4341 vsnprintf(buf, sizeof(buf), fmt, ap);
4342 buf[sizeof(buf) - 1] = '\0';
4343 va_end(ap);
4344 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
4345}
4346
4347
4348void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
4349{
4350 va_list ap;
4351 char buf[500];
4352
4353 if (!p2p->cfg->debug_print)
4354 return;
4355
4356 va_start(ap, fmt);
4357 vsnprintf(buf, sizeof(buf), fmt, ap);
4358 buf[sizeof(buf) - 1] = '\0';
4359 va_end(ap);
4360 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
4361}
4362
4363
4364void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
4365{
4366 va_list ap;
4367 char buf[500];
4368
4369 if (!p2p->cfg->debug_print)
4370 return;
4371
4372 va_start(ap, fmt);
4373 vsnprintf(buf, sizeof(buf), fmt, ap);
4374 buf[sizeof(buf) - 1] = '\0';
4375 va_end(ap);
4376 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
4377}
93588780
JM		 4378
4379
4380#ifdef CONFIG_WPS_NFC
4381
59b45d1a
JM		 4382static struct wpabuf * p2p_build_nfc_handover(struct p2p_data *p2p,
4383 int client_freq)
93588780
JM		 4384{
4385 struct wpabuf *buf;
4386 u8 op_class, channel;
4387 enum p2p_role_indication role = P2P_DEVICE_NOT_IN_GROUP;
4388
4389 buf = wpabuf_alloc(1000);
4390 if (buf == NULL)
4391 return NULL;
4392
4393 op_class = p2p->cfg->reg_class;
4394 channel = p2p->cfg->channel;
4395
4396 p2p_buf_add_capability(buf, p2p->dev_capab &
4397 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
4398 p2p_buf_add_device_info(buf, p2p, NULL);
4399
4400 if (p2p->num_groups > 0) {
4401 role = P2P_GO_IN_A_GROUP;
4402 p2p_freq_to_channel(p2p_group_get_freq(p2p->groups[0]),
4403 &op_class, &channel);
59b45d1a
JM		 4404 } else if (client_freq > 0) {
4405 role = P2P_CLIENT_IN_A_GROUP;
4406 p2p_freq_to_channel(client_freq, &op_class, &channel);
93588780
JM		 4407 }
4408
4409 p2p_buf_add_oob_go_neg_channel(buf, p2p->cfg->country, op_class,
4410 channel, role);
4411
4412 if (p2p->num_groups > 0) {
4413 /* Limit number of clients to avoid very long message */
4414 p2p_buf_add_group_info(p2p->groups[0], buf, 5);
4415 p2p_group_buf_add_id(p2p->groups[0], buf);
4416 }
4417
4418 return buf;
4419}
4420
4421
59b45d1a
JM		 4422struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
4423 int client_freq)
93588780 4424{
59b45d1a 4425 return p2p_build_nfc_handover(p2p, client_freq);
93588780
JM		 4426}
4427
4428
59b45d1a
JM		 4429struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
4430 int client_freq)
93588780 4431{
59b45d1a 4432 return p2p_build_nfc_handover(p2p, client_freq);
93588780
JM		 4433}
4434
db6ae69e
JM		 4435
4436int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
4437 struct p2p_nfc_params *params)
4438{
4439 struct p2p_message msg;
4440 struct p2p_device *dev;
4441 const u8 *p2p_dev_addr;
59b45d1a
JM		 4442 int freq;
4443 enum p2p_role_indication role;
db6ae69e
JM		 4444
4445 params->next_step = NO_ACTION;
4446
4447 if (p2p_parse_ies_separate(params->wsc_attr, params->wsc_len,
4448 params->p2p_attr, params->p2p_len, &msg)) {
4449 p2p_dbg(p2p, "Failed to parse WSC/P2P attributes from NFC");
4450 p2p_parse_free(&msg);
4451 return -1;
4452 }
4453
4454 if (msg.p2p_device_addr)
4455 p2p_dev_addr = msg.p2p_device_addr;
4456 else if (msg.device_id)
4457 p2p_dev_addr = msg.device_id;
4458 else {
4459 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
4460 p2p_parse_free(&msg);
4461 return -1;
4462 }
4463
4464 if (msg.oob_dev_password) {
4465 os_memcpy(params->oob_dev_pw, msg.oob_dev_password,
4466 msg.oob_dev_password_len);
4467 params->oob_dev_pw_len = msg.oob_dev_password_len;
4468 }
4469
4470 dev = p2p_create_device(p2p, p2p_dev_addr);
4471 if (dev == NULL) {
4472 p2p_parse_free(&msg);
4473 return -1;
4474 }
4475
4476 params->peer = &dev->info;
4477
4478 os_get_reltime(&dev->last_seen);
4479 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
4480 p2p_copy_wps_info(p2p, dev, 0, &msg);
4481
59b45d1a
JM		 4482 if (!msg.oob_go_neg_channel) {
4483 p2p_dbg(p2p, "OOB GO Negotiation Channel attribute not included");
4484 return -1;
4485 }
db6ae69e 4486
59b45d1a
JM		 4487 if (msg.oob_go_neg_channel[3] == 0 &&
4488 msg.oob_go_neg_channel[4] == 0)
4489 freq = 0;
4490 else
4491 freq = p2p_channel_to_freq(msg.oob_go_neg_channel[3],
4492 msg.oob_go_neg_channel[4]);
4493 if (freq < 0) {
4494 p2p_dbg(p2p, "Unknown peer OOB GO Neg channel");
4495 return -1;
4496 } else {
4497 p2p_dbg(p2p, "Peer OOB GO Neg channel: %u MHz", freq);
4498 dev->oob_go_neg_freq = freq;
4499 }
db6ae69e 4500
59b45d1a
JM		 4501 if (!params->sel) {
4502 freq = p2p_channel_to_freq(p2p->cfg->reg_class,
4503 p2p->cfg->channel);
4504 if (freq < 0) {
4505 p2p_dbg(p2p, "Own listen channel not known");
4506 return -1;
4507 }
4508 p2p_dbg(p2p, "Use own Listen channel as OOB GO Neg channel: %u MHz", freq);
4509 dev->oob_go_neg_freq = freq;
db6ae69e
JM		 4510 }
4511
59b45d1a
JM		 4512 role = msg.oob_go_neg_channel[5];
4513
db6ae69e
JM		 4514 p2p_parse_free(&msg);
4515
4516 if (dev->flags & P2P_DEV_USER_REJECTED) {
4517 p2p_dbg(p2p, "Do not report rejected device");
4518 return 0;
4519 }
4520
4521 if (!(dev->flags & P2P_DEV_REPORTED)) {
4522 p2p->cfg->dev_found(p2p->cfg->cb_ctx, p2p_dev_addr, &dev->info,
4523 !(dev->flags & P2P_DEV_REPORTED_ONCE));
4524 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
4525 }
4526
59b45d1a 4527 if (role == P2P_GO_IN_A_GROUP && p2p->num_groups > 0)
74df9ecd 4528 params->next_step = BOTH_GO;
59b45d1a 4529 else if (role == P2P_GO_IN_A_GROUP)
db6ae69e 4530 params->next_step = JOIN_GROUP;
59b45d1a
JM		 4531 else if (role == P2P_CLIENT_IN_A_GROUP) {
4532 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
4533 params->next_step = PEER_CLIENT;
4534 } else if (p2p->num_groups > 0)
db6ae69e
JM		 4535 params->next_step = AUTH_JOIN;
4536 else if (params->sel)
4537 params->next_step = INIT_GO_NEG;
4538 else
4539 params->next_step = RESP_GO_NEG;
4540
4541 return 0;
4542}
4543
c4f87a70
JM		 4544
4545void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
4546 int go_intent,
4547 const u8 *own_interface_addr)
4548{
4549
4550 p2p->authorized_oob_dev_pw_id = dev_pw_id;
4551 if (dev_pw_id == 0) {
4552 p2p_dbg(p2p, "NFC OOB Password unauthorized for static handover");
4553 return;
4554 }
4555
4556 p2p_dbg(p2p, "NFC OOB Password (id=%u) authorized for static handover",
4557 dev_pw_id);
4558
4559 p2p->go_intent = go_intent;
4560 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
4561}
4562
93588780 4563#endif /* CONFIG_WPS_NFC */
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