]> git.ipfire.org Git - thirdparty/hostap.git/blame - src/p2p/p2p.c
projects / thirdparty / hostap.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Remove the GPL notification from files contributed by Atheros
[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"
8aebb0e4 15#include "common/wpa_ctrl.h"
b22128ef
JM		 16#include "wps/wps_i.h"
17#include "p2p_i.h"
18#include "p2p.h"
19
20
21static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx);
22static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev);
23static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
24 const u8 *sa, const u8 *data, size_t len,
25 int rx_freq);
26static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
27 const u8 *sa, const u8 *data,
28 size_t len);
29static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx);
40c03fd4 30static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx);
b22128ef
JM		 31
32
40c03fd4
JM		 33/*
34 * p2p_scan recovery timeout
35 *
36 * Many drivers are using 30 second timeout on scan results. Allow a bit larger
37 * timeout for this to avoid hitting P2P timeout unnecessarily.
38 */
39#define P2P_SCAN_TIMEOUT 35
40
b22128ef
JM		 41/**
42 * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer
43 * entries will be removed
44 */
45#define P2P_PEER_EXPIRATION_AGE 300
46
47#define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2)
48
49static void p2p_expire_peers(struct p2p_data *p2p)
50{
51 struct p2p_device *dev, *n;
52 struct os_time now;
1d277f02 53 size_t i;
b22128ef
JM		 54
55 os_get_time(&now);
56 dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
57 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec)
58 continue;
b1aebbc4
JM		 59
60 if (p2p->cfg->go_connected &&
61 p2p->cfg->go_connected(p2p->cfg->cb_ctx,
62 dev->info.p2p_device_addr)) {
63 /*
64 * We are connected as a client to a group in which the
65 * peer is the GO, so do not expire the peer entry.
66 */
67 os_get_time(&dev->last_seen);
68 continue;
69 }
70
1d277f02
JM		 71 for (i = 0; i < p2p->num_groups; i++) {
72 if (p2p_group_is_client_connected(
73 p2p->groups[i], dev->info.p2p_device_addr))
74 break;
75 }
76 if (i < p2p->num_groups) {
77 /*
78 * The peer is connected as a client in a group where
79 * we are the GO, so do not expire the peer entry.
80 */
81 os_get_time(&dev->last_seen);
82 continue;
83 }
84
b22128ef 85 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Expiring old peer "
c5db8e51 86 "entry " MACSTR, MAC2STR(dev->info.p2p_device_addr));
b22128ef
JM		 87 dl_list_del(&dev->list);
88 p2p_device_free(p2p, dev);
89 }
90}
91
92
93static void p2p_expiration_timeout(void *eloop_ctx, void *timeout_ctx)
94{
95 struct p2p_data *p2p = eloop_ctx;
96 p2p_expire_peers(p2p);
97 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
98 p2p_expiration_timeout, p2p, NULL);
99}
100
101
102static const char * p2p_state_txt(int state)
103{
104 switch (state) {
105 case P2P_IDLE:
106 return "IDLE";
107 case P2P_SEARCH:
108 return "SEARCH";
109 case P2P_CONNECT:
110 return "CONNECT";
111 case P2P_CONNECT_LISTEN:
112 return "CONNECT_LISTEN";
113 case P2P_GO_NEG:
114 return "GO_NEG";
115 case P2P_LISTEN_ONLY:
116 return "LISTEN_ONLY";
117 case P2P_WAIT_PEER_CONNECT:
118 return "WAIT_PEER_CONNECT";
119 case P2P_WAIT_PEER_IDLE:
120 return "WAIT_PEER_IDLE";
121 case P2P_SD_DURING_FIND:
122 return "SD_DURING_FIND";
123 case P2P_PROVISIONING:
124 return "PROVISIONING";
125 case P2P_PD_DURING_FIND:
126 return "PD_DURING_FIND";
127 case P2P_INVITE:
128 return "INVITE";
129 case P2P_INVITE_LISTEN:
130 return "INVITE_LISTEN";
39185dfa
JM		 131 case P2P_SEARCH_WHEN_READY:
132 return "SEARCH_WHEN_READY";
b22128ef
JM		 133 default:
134 return "?";
135 }
136}
137
138
ec437d9e
JJ		 139u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr)
140{
141 struct p2p_device *dev = NULL;
142
143 if (!addr || !p2p)
144 return 0;
145
146 dev = p2p_get_device(p2p, addr);
147 if (dev)
148 return dev->wps_prov_info;
149 else
150 return 0;
151}
152
153
154void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *iface_addr)
155{
156 struct p2p_device *dev = NULL;
157
158 if (!iface_addr || !p2p)
159 return;
160
161 dev = p2p_get_device_interface(p2p, iface_addr);
162 if (dev)
163 dev->wps_prov_info = 0;
164}
165
166
b22128ef
JM		 167void p2p_set_state(struct p2p_data *p2p, int new_state)
168{
169 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: State %s -> %s",
170 p2p_state_txt(p2p->state), p2p_state_txt(new_state));
171 p2p->state = new_state;
172}
173
174
175void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
176{
177 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
178 "P2P: Set timeout (state=%s): %u.%06u sec",
179 p2p_state_txt(p2p->state), sec, usec);
180 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
181 eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
182}
183
184
185void p2p_clear_timeout(struct p2p_data *p2p)
186{
187 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Clear timeout (state=%s)",
188 p2p_state_txt(p2p->state));
189 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
190}
191
192
193void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
194 int status)
195{
196 struct p2p_go_neg_results res;
197 p2p_clear_timeout(p2p);
198 p2p_set_state(p2p, P2P_IDLE);
eb916eb8
JB		 199 if (p2p->go_neg_peer)
200 p2p->go_neg_peer->wps_method = WPS_NOT_READY;
b22128ef
JM		 201 p2p->go_neg_peer = NULL;
202
203 os_memset(&res, 0, sizeof(res));
204 res.status = status;
205 if (peer) {
c5db8e51 206 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr,
b22128ef
JM		 207 ETH_ALEN);
208 os_memcpy(res.peer_interface_addr, peer->intended_addr,
209 ETH_ALEN);
210 }
211 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
212}
213
214
215static void p2p_listen_in_find(struct p2p_data *p2p)
216{
217 unsigned int r, tu;
218 int freq;
219 struct wpabuf *ies;
220
221 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
222 "P2P: Starting short listen state (state=%s)",
223 p2p_state_txt(p2p->state));
224
225 freq = p2p_channel_to_freq(p2p->cfg->country, p2p->cfg->reg_class,
226 p2p->cfg->channel);
227 if (freq < 0) {
228 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
229 "P2P: Unknown regulatory class/channel");
230 return;
231 }
232
233 os_get_random((u8 *) &r, sizeof(r));
234 tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
235 p2p->min_disc_int) * 100;
236
237 p2p->pending_listen_freq = freq;
238 p2p->pending_listen_sec = 0;
239 p2p->pending_listen_usec = 1024 * tu;
240
241 ies = p2p_build_probe_resp_ies(p2p);
242 if (ies == NULL)
243 return;
244
245 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
246 ies) < 0) {
247 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
248 "P2P: Failed to start listen mode");
249 p2p->pending_listen_freq = 0;
250 }
251 wpabuf_free(ies);
252}
253
254
255int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
256{
257 int freq;
258 struct wpabuf *ies;
259
260 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
261 "P2P: Going to listen(only) state");
262
263 freq = p2p_channel_to_freq(p2p->cfg->country, p2p->cfg->reg_class,
264 p2p->cfg->channel);
265 if (freq < 0) {
266 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
267 "P2P: Unknown regulatory class/channel");
268 return -1;
269 }
270
271 p2p->pending_listen_freq = freq;
272 p2p->pending_listen_sec = timeout / 1000;
273 p2p->pending_listen_usec = (timeout % 1000) * 1000;
274
275 if (p2p->p2p_scan_running) {
d9bdba9f
JM		 276 if (p2p->start_after_scan == P2P_AFTER_SCAN_NOTHING) {
277 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
278 "P2P: p2p_scan running - connect is already "
279 "pending - skip listen");
280 return 0;
281 }
b22128ef
JM		 282 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
283 "P2P: p2p_scan running - delay start of listen state");
284 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
285 return 0;
286 }
287
288 ies = p2p_build_probe_resp_ies(p2p);
289 if (ies == NULL)
290 return -1;
291
292 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
293 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
294 "P2P: Failed to start listen mode");
295 p2p->pending_listen_freq = 0;
296 wpabuf_free(ies);
297 return -1;
298 }
299 wpabuf_free(ies);
300
301 p2p_set_state(p2p, P2P_LISTEN_ONLY);
302
303 return 0;
304}
305
306
307static void p2p_device_clear_reported(struct p2p_data *p2p)
308{
309 struct p2p_device *dev;
310 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list)
311 dev->flags &= ~P2P_DEV_REPORTED;
312}
313
314
315/**
316 * p2p_get_device - Fetch a peer entry
317 * @p2p: P2P module context from p2p_init()
318 * @addr: P2P Device Address of the peer
319 * Returns: Pointer to the device entry or %NULL if not found
320 */
321struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
322{
323 struct p2p_device *dev;
324 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
c5db8e51 325 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
b22128ef
JM		 326 return dev;
327 }
328 return NULL;
329}
330
331
332/**
333 * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
334 * @p2p: P2P module context from p2p_init()
335 * @addr: P2P Interface Address of the peer
336 * Returns: Pointer to the device entry or %NULL if not found
337 */
338struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
339 const u8 *addr)
340{
341 struct p2p_device *dev;
342 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
343 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
344 return dev;
345 }
346 return NULL;
347}
348
349
350/**
351 * p2p_create_device - Create a peer entry
352 * @p2p: P2P module context from p2p_init()
353 * @addr: P2P Device Address of the peer
354 * Returns: Pointer to the device entry or %NULL on failure
355 *
356 * If there is already an entry for the peer, it will be returned instead of
357 * creating a new one.
358 */
359static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
360 const u8 *addr)
361{
362 struct p2p_device *dev, *oldest = NULL;
363 size_t count = 0;
364
365 dev = p2p_get_device(p2p, addr);
366 if (dev)
367 return dev;
368
369 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
370 count++;
371 if (oldest == NULL ||
372 os_time_before(&dev->last_seen, &oldest->last_seen))
373 oldest = dev;
374 }
375 if (count + 1 > p2p->cfg->max_peers && oldest) {
376 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
377 "P2P: Remove oldest peer entry to make room for a new "
378 "peer");
379 dl_list_del(&oldest->list);
380 p2p_device_free(p2p, oldest);
381 }
382
383 dev = os_zalloc(sizeof(*dev));
384 if (dev == NULL)
385 return NULL;
386 dl_list_add(&p2p->devices, &dev->list);
c5db8e51 387 os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
b22128ef
JM		 388
389 return dev;
390}
391
392
393static void p2p_copy_client_info(struct p2p_device *dev,
394 struct p2p_client_info *cli)
395{
c5db8e51
KRK		 396 os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len);
397 dev->info.device_name[cli->dev_name_len] = '\0';
398 dev->info.dev_capab = cli->dev_capab;
399 dev->info.config_methods = cli->config_methods;
400 os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
e57ae6e1
JMB		 401 dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
402 os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
403 dev->info.wps_sec_dev_type_list_len);
b22128ef
JM		 404}
405
406
407static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
408 const u8 *go_interface_addr, int freq,
409 const u8 *gi, size_t gi_len)
410{
411 struct p2p_group_info info;
412 size_t c;
413 struct p2p_device *dev;
414
415 if (gi == NULL)
416 return 0;
417
418 if (p2p_group_info_parse(gi, gi_len, &info) < 0)
419 return -1;
420
421 /*
422 * Clear old data for this group; if the devices are still in the
423 * group, the information will be restored in the loop following this.
424 */
425 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
b5472a45 426 if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
b22128ef
JM		 427 ETH_ALEN) == 0) {
428 os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
429 os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
430 }
431 }
432
433 for (c = 0; c < info.num_clients; c++) {
434 struct p2p_client_info *cli = &info.client[c];
2f0c8936
MK		 435 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
436 ETH_ALEN) == 0)
437 continue; /* ignore our own entry */
b22128ef
JM		 438 dev = p2p_get_device(p2p, cli->p2p_device_addr);
439 if (dev) {
440 /*
441 * Update information only if we have not received this
442 * directly from the client.
443 */
444 if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
445 P2P_DEV_PROBE_REQ_ONLY))
446 p2p_copy_client_info(dev, cli);
447 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
448 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
449 }
450 } else {
451 dev = p2p_create_device(p2p, cli->p2p_device_addr);
452 if (dev == NULL)
453 continue;
454 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
455 p2p_copy_client_info(dev, cli);
456 dev->oper_freq = freq;
c5db8e51
KRK		 457 p2p->cfg->dev_found(p2p->cfg->cb_ctx,
458 dev->info.p2p_device_addr,
8fd7dc1b
JB		 459 &dev->info, 1);
460 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
b22128ef
JM		 461 }
462
463 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
464 ETH_ALEN);
465 os_get_time(&dev->last_seen);
466 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
467 os_memcpy(dev->member_in_go_iface, go_interface_addr,
468 ETH_ALEN);
469 }
470
471 return 0;
472}
473
474
b67d0d9e
JM		 475static void p2p_copy_wps_info(struct p2p_device *dev, int probe_req,
476 const struct p2p_message *msg)
477{
478 os_memcpy(dev->info.device_name, msg->device_name,
479 sizeof(dev->info.device_name));
480
481 if (msg->manufacturer &&
482 msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
483 os_memset(dev->info.manufacturer, 0,
484 sizeof(dev->info.manufacturer));
485 os_memcpy(dev->info.manufacturer, msg->manufacturer,
486 msg->manufacturer_len);
487 }
488
489 if (msg->model_name &&
490 msg->model_name_len < sizeof(dev->info.model_name)) {
491 os_memset(dev->info.model_name, 0,
492 sizeof(dev->info.model_name));
493 os_memcpy(dev->info.model_name, msg->model_name,
494 msg->model_name_len);
495 }
496
497 if (msg->model_number &&
498 msg->model_number_len < sizeof(dev->info.model_number)) {
499 os_memset(dev->info.model_number, 0,
500 sizeof(dev->info.model_number));
501 os_memcpy(dev->info.model_number, msg->model_number,
502 msg->model_number_len);
503 }
504
505 if (msg->serial_number &&
506 msg->serial_number_len < sizeof(dev->info.serial_number)) {
507 os_memset(dev->info.serial_number, 0,
508 sizeof(dev->info.serial_number));
509 os_memcpy(dev->info.serial_number, msg->serial_number,
510 msg->serial_number_len);
511 }
512
513 if (msg->pri_dev_type)
514 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
515 sizeof(dev->info.pri_dev_type));
516 else if (msg->wps_pri_dev_type)
517 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
518 sizeof(dev->info.pri_dev_type));
519
520 if (msg->wps_sec_dev_type_list) {
521 os_memcpy(dev->info.wps_sec_dev_type_list,
522 msg->wps_sec_dev_type_list,
523 msg->wps_sec_dev_type_list_len);
524 dev->info.wps_sec_dev_type_list_len =
525 msg->wps_sec_dev_type_list_len;
526 }
527
528 if (msg->capability) {
529 dev->info.dev_capab = msg->capability[0];
530 dev->info.group_capab = msg->capability[1];
531 }
532
533 if (msg->ext_listen_timing) {
534 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
535 dev->ext_listen_interval =
536 WPA_GET_LE16(msg->ext_listen_timing + 2);
537 }
538
539 if (!probe_req) {
540 dev->info.config_methods = msg->config_methods ?
541 msg->config_methods : msg->wps_config_methods;
542 }
543}
544
545
b22128ef
JM		 546/**
547 * p2p_add_device - Add peer entries based on scan results
548 * @p2p: P2P module context from p2p_init()
549 * @addr: Source address of Beacon or Probe Response frame (may be either
550 * P2P Device Address or P2P Interface Address)
551 * @level: Signal level (signal strength of the received frame from the peer)
552 * @freq: Frequency on which the Beacon or Probe Response frame was received
553 * @ies: IEs from the Beacon or Probe Response frame
554 * @ies_len: Length of ies buffer in octets
555 * Returns: 0 on success, -1 on failure
556 *
557 * If the scan result is for a GO, the clients in the group will also be added
17bef1e9
AC		 558 * to the peer table. This function can also be used with some other frames
559 * like Provision Discovery Request that contains P2P Capability and P2P Device
560 * Info attributes.
b22128ef 561 */
17bef1e9
AC		 562int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq, int level,
563 const u8 *ies, size_t ies_len)
b22128ef
JM		 564{
565 struct p2p_device *dev;
566 struct p2p_message msg;
567 const u8 *p2p_dev_addr;
6f2c0607 568 int i;
b22128ef
JM		 569
570 os_memset(&msg, 0, sizeof(msg));
571 if (p2p_parse_ies(ies, ies_len, &msg)) {
572 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
573 "P2P: Failed to parse P2P IE for a device entry");
574 p2p_parse_free(&msg);
575 return -1;
576 }
577
578 if (msg.p2p_device_addr)
579 p2p_dev_addr = msg.p2p_device_addr;
580 else if (msg.device_id)
581 p2p_dev_addr = msg.device_id;
582 else {
583 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
584 "P2P: Ignore scan data without P2P Device Info or "
585 "P2P Device Id");
586 p2p_parse_free(&msg);
587 return -1;
588 }
589
80c9582a
JM		 590 if (!is_zero_ether_addr(p2p->peer_filter) &&
591 os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
592 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Do not add peer "
593 "filter for " MACSTR " due to peer filter",
594 MAC2STR(p2p_dev_addr));
595 return 0;
596 }
597
b22128ef
JM		 598 dev = p2p_create_device(p2p, p2p_dev_addr);
599 if (dev == NULL) {
600 p2p_parse_free(&msg);
601 return -1;
602 }
603 os_get_time(&dev->last_seen);
604 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
605
606 if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
607 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
608 if (msg.ssid &&
609 (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
610 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
611 != 0)) {
612 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
613 dev->oper_ssid_len = msg.ssid[1];
614 }
615
616 if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
617 *msg.ds_params >= 1 && *msg.ds_params <= 14) {
618 int ds_freq;
619 if (*msg.ds_params == 14)
620 ds_freq = 2484;
621 else
622 ds_freq = 2407 + *msg.ds_params * 5;
623 if (freq != ds_freq) {
624 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
625 "P2P: Update Listen frequency based on DS "
626 "Parameter Set IE: %d -> %d MHz",
627 freq, ds_freq);
628 freq = ds_freq;
629 }
630 }
631
632 if (dev->listen_freq && dev->listen_freq != freq) {
633 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
634 "P2P: Update Listen frequency based on scan "
635 "results (" MACSTR " %d -> %d MHz (DS param %d)",
c5db8e51
KRK		 636 MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
637 freq, msg.ds_params ? *msg.ds_params : -1);
b22128ef
JM		 638 }
639 dev->listen_freq = freq;
f8d0131a
JM		 640 if (msg.group_info)
641 dev->oper_freq = freq;
6402fc43 642 dev->info.level = level;
b22128ef 643
b67d0d9e 644 p2p_copy_wps_info(dev, 0, &msg);
e57ae6e1 645
10c5d2a5 646 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
6f2c0607
JMB		 647 wpabuf_free(dev->info.wps_vendor_ext[i]);
648 dev->info.wps_vendor_ext[i] = NULL;
649 }
650
10c5d2a5 651 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
6f2c0607
JMB		 652 if (msg.wps_vendor_ext[i] == NULL)
653 break;
654 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
655 msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
656 if (dev->info.wps_vendor_ext[i] == NULL)
657 break;
658 }
659
b22128ef
JM		 660 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq, msg.group_info,
661 msg.group_info_len);
662
663 p2p_parse_free(&msg);
664
665 if (p2p_pending_sd_req(p2p, dev))
666 dev->flags |= P2P_DEV_SD_SCHEDULE;
667
668 if (dev->flags & P2P_DEV_REPORTED)
669 return 0;
670
671 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
672 "P2P: Peer found with Listen frequency %d MHz", freq);
673 if (dev->flags & P2P_DEV_USER_REJECTED) {
674 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
675 "P2P: Do not report rejected device");
676 return 0;
677 }
8fd7dc1b
JB		 678
679 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
680 !(dev->flags & P2P_DEV_REPORTED_ONCE));
681 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
b22128ef
JM		 682
683 return 0;
684}
685
686
687static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
688{
6f2c0607
JMB		 689 int i;
690
5cfda25e
JJ		 691 if (p2p->go_neg_peer == dev) {
692 /*
693 * If GO Negotiation is in progress, report that it has failed.
694 */
695 p2p_go_neg_failed(p2p, dev, -1);
b22128ef 696 p2p->go_neg_peer = NULL;
5cfda25e 697 }
b22128ef
JM		 698 if (p2p->invite_peer == dev)
699 p2p->invite_peer = NULL;
700 if (p2p->sd_peer == dev)
701 p2p->sd_peer = NULL;
702 if (p2p->pending_client_disc_go == dev)
703 p2p->pending_client_disc_go = NULL;
704
f5fc6032
AC		 705 /* dev_lost() device, but only if it was previously dev_found() */
706 if (dev->flags & P2P_DEV_REPORTED_ONCE)
707 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
708 dev->info.p2p_device_addr);
56eeb8f2 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
b22128ef
JM		 715 os_free(dev);
716}
717
718
719static int p2p_get_next_prog_freq(struct p2p_data *p2p)
720{
721 struct p2p_channels *c;
722 struct p2p_reg_class *cla;
723 size_t cl, ch;
724 int found = 0;
725 u8 reg_class;
726 u8 channel;
727 int freq;
728
729 c = &p2p->cfg->channels;
730 for (cl = 0; cl < c->reg_classes; cl++) {
731 cla = &c->reg_class[cl];
732 if (cla->reg_class != p2p->last_prog_scan_class)
733 continue;
734 for (ch = 0; ch < cla->channels; ch++) {
735 if (cla->channel[ch] == p2p->last_prog_scan_chan) {
736 found = 1;
737 break;
738 }
739 }
740 if (found)
741 break;
742 }
743
744 if (!found) {
745 /* Start from beginning */
746 reg_class = c->reg_class[0].reg_class;
747 channel = c->reg_class[0].channel[0];
748 } else {
749 /* Pick the next channel */
750 ch++;
751 if (ch == cla->channels) {
752 cl++;
753 if (cl == c->reg_classes)
754 cl = 0;
755 ch = 0;
756 }
757 reg_class = c->reg_class[cl].reg_class;
758 channel = c->reg_class[cl].channel[ch];
759 }
760
761 freq = p2p_channel_to_freq(p2p->cfg->country, reg_class, channel);
762 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Next progressive search "
763 "channel: reg_class %u channel %u -> %d MHz",
764 reg_class, channel, freq);
765 p2p->last_prog_scan_class = reg_class;
766 p2p->last_prog_scan_chan = channel;
767
768 if (freq == 2412 || freq == 2437 || freq == 2462)
769 return 0; /* No need to add social channels */
770 return freq;
771}
772
773
774static void p2p_search(struct p2p_data *p2p)
775{
776 int freq = 0;
777 enum p2p_scan_type type;
778
779 if (p2p->drv_in_listen) {
780 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is still "
781 "in Listen state - wait for it to end before "
782 "continuing");
783 return;
784 }
785 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
786
787 if (p2p->go_neg_peer) {
788 /*
789 * Only scan the known listen frequency of the peer
790 * during GO Negotiation start.
791 */
792 freq = p2p->go_neg_peer->listen_freq;
793 if (freq <= 0)
794 freq = p2p->go_neg_peer->oper_freq;
795 type = P2P_SCAN_SPECIFIC;
796 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search "
797 "for freq %u (GO Neg)", freq);
798 } else if (p2p->invite_peer) {
799 /*
800 * Only scan the known listen frequency of the peer
801 * during Invite start.
802 */
803 freq = p2p->invite_peer->listen_freq;
804 if (freq <= 0)
805 freq = p2p->invite_peer->oper_freq;
806 type = P2P_SCAN_SPECIFIC;
807 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search "
808 "for freq %u (Invite)", freq);
809 } else if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
810 (freq = p2p_get_next_prog_freq(p2p)) > 0) {
811 type = P2P_SCAN_SOCIAL_PLUS_ONE;
812 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search "
813 "(+ freq %u)", freq);
814 } else {
815 type = P2P_SCAN_SOCIAL;
816 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search");
817 }
818
046ef4aa 819 if (p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
6d92fa6e 820 p2p->num_req_dev_types, p2p->req_dev_types,
165ec730 821 p2p->find_dev_id)) {
b22128ef
JM		 822 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
823 "P2P: Scan request failed");
824 p2p_continue_find(p2p);
40c03fd4
JM		 825 } else {
826 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan");
827 p2p->p2p_scan_running = 1;
828 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
829 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
830 p2p, NULL);
b22128ef
JM		 831 }
832}
833
834
835static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
836{
837 struct p2p_data *p2p = eloop_ctx;
838 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Find timeout -> stop");
839 p2p_stop_find(p2p);
840}
841
842
843static int p2p_run_after_scan(struct p2p_data *p2p)
844{
845 struct p2p_device *dev;
846 enum p2p_after_scan op;
847
3f9285ff 848 if (p2p->after_scan_tx) {
3f9285ff
JM		 849 /* TODO: schedule p2p_run_after_scan to be called from TX
850 * status callback(?) */
851 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send pending "
852 "Action frame at p2p_scan completion");
46eeedac
JM		 853 p2p->cfg->send_action(p2p->cfg->cb_ctx,
854 p2p->after_scan_tx->freq,
855 p2p->after_scan_tx->dst,
856 p2p->after_scan_tx->src,
857 p2p->after_scan_tx->bssid,
858 (u8 *) (p2p->after_scan_tx + 1),
859 p2p->after_scan_tx->len,
860 p2p->after_scan_tx->wait_time);
3f9285ff
JM		 861 os_free(p2p->after_scan_tx);
862 p2p->after_scan_tx = NULL;
863 return 1;
864 }
865
b22128ef
JM		 866 op = p2p->start_after_scan;
867 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
868 switch (op) {
869 case P2P_AFTER_SCAN_NOTHING:
870 break;
871 case P2P_AFTER_SCAN_LISTEN:
872 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously "
873 "requested Listen state");
874 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
875 p2p->pending_listen_usec / 1000);
876 return 1;
877 case P2P_AFTER_SCAN_CONNECT:
878 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously "
879 "requested connect with " MACSTR,
880 MAC2STR(p2p->after_scan_peer));
881 dev = p2p_get_device(p2p, p2p->after_scan_peer);
882 if (dev == NULL) {
883 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer not "
884 "known anymore");
885 break;
886 }
887 p2p_connect_send(p2p, dev);
888 return 1;
889 }
890
891 return 0;
892}
893
894
b22128ef
JM		 895static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
896{
897 struct p2p_data *p2p = eloop_ctx;
898 int running;
899 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan timeout "
900 "(running=%d)", p2p->p2p_scan_running);
901 running = p2p->p2p_scan_running;
902 /* Make sure we recover from missed scan results callback */
903 p2p->p2p_scan_running = 0;
904
905 if (running)
906 p2p_run_after_scan(p2p);
907}
908
909
046ef4aa
JMB		 910static void p2p_free_req_dev_types(struct p2p_data *p2p)
911{
912 p2p->num_req_dev_types = 0;
913 os_free(p2p->req_dev_types);
914 p2p->req_dev_types = NULL;
915}
916
917
b22128ef 918int p2p_find(struct p2p_data *p2p, unsigned int timeout,
046ef4aa 919 enum p2p_discovery_type type,
6d92fa6e
JM		 920 unsigned int num_req_dev_types, const u8 *req_dev_types,
921 const u8 *dev_id)
b22128ef
JM		 922{
923 int res;
924
925 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting find (type=%d)",
926 type);
927 if (p2p->p2p_scan_running) {
928 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan is "
929 "already running");
930 }
046ef4aa
JMB		 931
932 p2p_free_req_dev_types(p2p);
933 if (req_dev_types && num_req_dev_types) {
934 p2p->req_dev_types = os_malloc(num_req_dev_types *
935 WPS_DEV_TYPE_LEN);
936 if (p2p->req_dev_types == NULL)
937 return -1;
938 os_memcpy(p2p->req_dev_types, req_dev_types,
939 num_req_dev_types * WPS_DEV_TYPE_LEN);
940 p2p->num_req_dev_types = num_req_dev_types;
941 }
942
6d92fa6e
JM		 943 if (dev_id) {
944 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
945 p2p->find_dev_id = p2p->find_dev_id_buf;
946 } else
947 p2p->find_dev_id = NULL;
948
b22128ef
JM		 949 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
950 p2p_clear_timeout(p2p);
951 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
952 p2p->find_type = type;
953 p2p_device_clear_reported(p2p);
954 p2p_set_state(p2p, P2P_SEARCH);
955 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
39185dfa 956 p2p->last_p2p_find_timeout = timeout;
b22128ef
JM		 957 if (timeout)
958 eloop_register_timeout(timeout, 0, p2p_find_timeout,
959 p2p, NULL);
960 switch (type) {
961 case P2P_FIND_START_WITH_FULL:
962 case P2P_FIND_PROGRESSIVE:
046ef4aa
JMB		 963 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
964 p2p->num_req_dev_types,
6d92fa6e 965 p2p->req_dev_types, dev_id);
b22128ef
JM		 966 break;
967 case P2P_FIND_ONLY_SOCIAL:
046ef4aa
JMB		 968 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
969 p2p->num_req_dev_types,
6d92fa6e 970 p2p->req_dev_types, dev_id);
b22128ef
JM		 971 break;
972 default:
973 return -1;
974 }
975
976 if (res == 0) {
977 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan");
978 p2p->p2p_scan_running = 1;
979 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
980 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
981 p2p, NULL);
39185dfa
JM		 982 } else if (res == 1) {
983 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Could not start "
984 "p2p_scan at this point - will try again after "
985 "previous scan completes");
986 res = 0;
987 p2p_set_state(p2p, P2P_SEARCH_WHEN_READY);
988 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
b22128ef
JM		 989 } else {
990 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start "
991 "p2p_scan");
0c96fd6d
JM		 992 p2p_set_state(p2p, P2P_IDLE);
993 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
b22128ef
JM		 994 }
995
996 return res;
997}
998
999
39185dfa
JM		 1000int p2p_other_scan_completed(struct p2p_data *p2p)
1001{
1002 if (p2p->state != P2P_SEARCH_WHEN_READY)
1003 return 0;
1004 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting pending P2P find "
1005 "now that previous scan was completed");
1006 if (p2p_find(p2p, p2p->last_p2p_find_timeout, p2p->find_type,
6d92fa6e
JM		 1007 p2p->num_req_dev_types, p2p->req_dev_types,
1008 p2p->find_dev_id) < 0)
39185dfa
JM		 1009 return 0;
1010 return 1;
1011}
1012
1013
0b8889d8 1014void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
b22128ef
JM		 1015{
1016 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Stopping find");
1017 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1018 p2p_clear_timeout(p2p);
8aebb0e4
JJ		 1019 if (p2p->state == P2P_SEARCH)
1020 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, P2P_EVENT_FIND_STOPPED);
b22128ef 1021 p2p_set_state(p2p, P2P_IDLE);
046ef4aa 1022 p2p_free_req_dev_types(p2p);
b22128ef
JM		 1023 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1024 p2p->go_neg_peer = NULL;
1025 p2p->sd_peer = NULL;
1026 p2p->invite_peer = NULL;
0b8889d8
JM		 1027 if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1028 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip stop_listen "
1029 "since we are on correct channel for response");
1030 return;
1031 }
54b8f994
JM		 1032 if (p2p->drv_in_listen) {
1033 /*
1034 * The driver may not deliver callback to p2p_listen_end()
1035 * when the operation gets canceled, so clear the internal
1036 * variable that is tracking driver state.
1037 */
1038 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Clear "
1039 "drv_in_listen (%d)", p2p->drv_in_listen);
1040 p2p->drv_in_listen = 0;
1041 }
b22128ef
JM		 1042 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1043}
1044
1045
0b8889d8
JM		 1046void p2p_stop_find(struct p2p_data *p2p)
1047{
1048 p2p_stop_find_for_freq(p2p, 0);
1049}
1050
1051
7861cb08 1052static int p2p_prepare_channel(struct p2p_data *p2p, unsigned int force_freq)
b22128ef 1053{
b22128ef 1054 if (force_freq) {
1e19f734 1055 u8 op_reg_class, op_channel;
b22128ef 1056 if (p2p_freq_to_channel(p2p->cfg->country, force_freq,
1e19f734 1057 &op_reg_class, &op_channel) < 0) {
b22128ef
JM		 1058 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1059 "P2P: Unsupported frequency %u MHz",
1060 force_freq);
1061 return -1;
1062 }
1e19f734
JM		 1063 if (!p2p_channels_includes(&p2p->cfg->channels, op_reg_class,
1064 op_channel)) {
1065 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1066 "P2P: Frequency %u MHz (oper_class %u "
1067 "channel %u) not allowed for P2P",
1068 force_freq, op_reg_class, op_channel);
1069 return -1;
1070 }
1071 p2p->op_reg_class = op_reg_class;
1072 p2p->op_channel = op_channel;
b22128ef
JM		 1073 p2p->channels.reg_classes = 1;
1074 p2p->channels.reg_class[0].channels = 1;
1075 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1076 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1077 } else {
7cfc4ac3
AGS		 1078 u8 op_reg_class, op_channel;
1079
1080 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1081 p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1082 p2p_freq_to_channel(p2p->cfg->country,
1083 p2p->best_freq_overall,
1084 &op_reg_class, &op_channel) == 0) {
1085 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1086 "P2P: Select best overall channel as "
1087 "operating channel preference");
1088 p2p->op_reg_class = op_reg_class;
1089 p2p->op_channel = op_channel;
1090 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1091 p2p_supported_freq(p2p, p2p->best_freq_5) &&
1092 p2p_freq_to_channel(p2p->cfg->country,
1093 p2p->best_freq_5,
1094 &op_reg_class, &op_channel) ==
1095 0) {
1096 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1097 "P2P: Select best 5 GHz channel as "
1098 "operating channel preference");
1099 p2p->op_reg_class = op_reg_class;
1100 p2p->op_channel = op_channel;
1101 } else if (!p2p->cfg->cfg_op_channel &&
1102 p2p->best_freq_24 > 0 &&
1103 p2p_supported_freq(p2p, p2p->best_freq_24) &&
1104 p2p_freq_to_channel(p2p->cfg->country,
1105 p2p->best_freq_24,
1106 &op_reg_class, &op_channel) ==
1107 0) {
1108 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1109 "P2P: Select best 2.4 GHz channel as "
1110 "operating channel preference");
1111 p2p->op_reg_class = op_reg_class;
1112 p2p->op_channel = op_channel;
1113 } else {
1114 p2p->op_reg_class = p2p->cfg->op_reg_class;
1115 p2p->op_channel = p2p->cfg->op_channel;
1116 }
1117
b22128ef
JM		 1118 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1119 sizeof(struct p2p_channels));
1120 }
1121 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1122 "P2P: Own preference for operation channel: "
7cfc4ac3 1123 "Operating Class %u Channel %u%s",
b22128ef
JM		 1124 p2p->op_reg_class, p2p->op_channel,
1125 force_freq ? " (forced)" : "");
1126
7861cb08
JM		 1127 return 0;
1128}
1129
1130
acc247b2
JM		 1131static void p2p_set_dev_persistent(struct p2p_device *dev,
1132 int persistent_group)
1133{
1134 switch (persistent_group) {
1135 case 0:
1136 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1137 P2P_DEV_PREFER_PERSISTENT_RECONN);
1138 break;
1139 case 1:
1140 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1141 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1142 break;
1143 case 2:
1144 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1145 P2P_DEV_PREFER_PERSISTENT_RECONN;
1146 break;
1147 }
1148}
1149
1150
7861cb08
JM		 1151int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1152 enum p2p_wps_method wps_method,
1153 int go_intent, const u8 *own_interface_addr,
1154 unsigned int force_freq, int persistent_group)
1155{
1156 struct p2p_device *dev;
1157
1158 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1159 "P2P: Request to start group negotiation - peer=" MACSTR
1160 " GO Intent=%d Intended Interface Address=" MACSTR
1161 " wps_method=%d persistent_group=%d",
1162 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1163 wps_method, persistent_group);
1164
1165 if (p2p_prepare_channel(p2p, force_freq) < 0)
1166 return -1;
1167
4458d915 1168 p2p->ssid_set = 0;
b22128ef
JM		 1169 dev = p2p_get_device(p2p, peer_addr);
1170 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1171 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1172 "P2P: Cannot connect to unknown P2P Device " MACSTR,
1173 MAC2STR(peer_addr));
1174 return -1;
1175 }
1176
1177 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
c5db8e51
KRK		 1178 if (!(dev->info.dev_capab &
1179 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
b22128ef
JM		 1180 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1181 "P2P: Cannot connect to P2P Device " MACSTR
1182 " that is in a group and is not discoverable",
1183 MAC2STR(peer_addr));
1184 return -1;
1185 }
1186 if (dev->oper_freq <= 0) {
1187 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1188 "P2P: Cannot connect to P2P Device " MACSTR
1189 " with incomplete information",
1190 MAC2STR(peer_addr));
1191 return -1;
1192 }
1193
1194 /*
1195 * First, try to connect directly. If the peer does not
1196 * acknowledge frames, assume it is sleeping and use device
1197 * discoverability via the GO at that point.
1198 */
1199 }
1200
1201 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1202 dev->flags &= ~P2P_DEV_USER_REJECTED;
1203 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1204 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
9dac8c3e 1205 dev->connect_reqs = 0;
b22128ef
JM		 1206 dev->go_neg_req_sent = 0;
1207 dev->go_state = UNKNOWN_GO;
acc247b2 1208 p2p_set_dev_persistent(dev, persistent_group);
b22128ef
JM		 1209 p2p->go_intent = go_intent;
1210 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1211
1212 if (p2p->state != P2P_IDLE)
1213 p2p_stop_find(p2p);
1214
f44ae207
JM		 1215 if (p2p->after_scan_tx) {
1216 /*
1217 * We need to drop the pending frame to avoid issues with the
1218 * new GO Negotiation, e.g., when the pending frame was from a
1219 * previous attempt at starting a GO Negotiation.
1220 */
1221 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped "
1222 "previous pending Action frame TX that was waiting "
1223 "for p2p_scan completion");
1224 os_free(p2p->after_scan_tx);
1225 p2p->after_scan_tx = NULL;
1226 }
1227
b22128ef
JM		 1228 dev->wps_method = wps_method;
1229 dev->status = P2P_SC_SUCCESS;
d5b20a73
JM		 1230
1231 if (force_freq)
1232 dev->flags |= P2P_DEV_FORCE_FREQ;
1233 else
1234 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1235
b22128ef
JM		 1236 if (p2p->p2p_scan_running) {
1237 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1238 "P2P: p2p_scan running - delay connect send");
1239 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1240 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1241 return 0;
1242 }
1243 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1244
1245 return p2p_connect_send(p2p, dev);
1246}
1247
1248
1249int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1250 enum p2p_wps_method wps_method,
1251 int go_intent, const u8 *own_interface_addr,
1252 unsigned int force_freq, int persistent_group)
1253{
1254 struct p2p_device *dev;
1255
1256 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1257 "P2P: Request to authorize group negotiation - peer=" MACSTR
1258 " GO Intent=%d Intended Interface Address=" MACSTR
1259 " wps_method=%d persistent_group=%d",
1260 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1261 wps_method, persistent_group);
1262
7861cb08
JM		 1263 if (p2p_prepare_channel(p2p, force_freq) < 0)
1264 return -1;
b22128ef
JM		 1265
1266 dev = p2p_get_device(p2p, peer_addr);
1267 if (dev == NULL) {
1268 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1269 "P2P: Cannot authorize unknown P2P Device " MACSTR,
1270 MAC2STR(peer_addr));
1271 return -1;
1272 }
1273
1274 dev->flags &= ~P2P_DEV_NOT_YET_READY;
1275 dev->flags &= ~P2P_DEV_USER_REJECTED;
1276 dev->go_neg_req_sent = 0;
1277 dev->go_state = UNKNOWN_GO;
acc247b2 1278 p2p_set_dev_persistent(dev, persistent_group);
b22128ef
JM		 1279 p2p->go_intent = go_intent;
1280 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1281
1282 dev->wps_method = wps_method;
1283 dev->status = P2P_SC_SUCCESS;
1284
d5b20a73
JM		 1285 if (force_freq)
1286 dev->flags |= P2P_DEV_FORCE_FREQ;
1287 else
1288 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1289
b22128ef
JM		 1290 return 0;
1291}
1292
1293
1294void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1295 struct p2p_device *dev, struct p2p_message *msg)
1296{
1297 os_get_time(&dev->last_seen);
1298
b67d0d9e 1299 p2p_copy_wps_info(dev, 0, msg);
e57ae6e1 1300
b22128ef
JM		 1301 if (msg->listen_channel) {
1302 int freq;
1303 freq = p2p_channel_to_freq((char *) msg->listen_channel,
1304 msg->listen_channel[3],
1305 msg->listen_channel[4]);
1306 if (freq < 0) {
1307 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1308 "P2P: Unknown peer Listen channel: "
1309 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1310 msg->listen_channel[0],
1311 msg->listen_channel[1],
1312 msg->listen_channel[2],
1313 msg->listen_channel[3],
1314 msg->listen_channel[4]);
1315 } else {
1316 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update "
1317 "peer " MACSTR " Listen channel: %u -> %u MHz",
c5db8e51 1318 MAC2STR(dev->info.p2p_device_addr),
b22128ef
JM		 1319 dev->listen_freq, freq);
1320 dev->listen_freq = freq;
1321 }
1322 }
b22128ef
JM		 1323
1324 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1325 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1326 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1327 "P2P: Completed device entry based on data from "
1328 "GO Negotiation Request");
1329 } else {
1330 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1331 "P2P: Created device entry based on GO Neg Req: "
1332 MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1333 "listen_freq=%d",
c5db8e51
KRK		 1334 MAC2STR(dev->info.p2p_device_addr),
1335 dev->info.dev_capab, dev->info.group_capab,
1336 dev->info.device_name, dev->listen_freq);
b22128ef
JM		 1337 }
1338
1339 dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1340
1341 if (dev->flags & P2P_DEV_USER_REJECTED) {
1342 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1343 "P2P: Do not report rejected device");
1344 return;
1345 }
1346
8fd7dc1b
JB		 1347 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1348 !(dev->flags & P2P_DEV_REPORTED_ONCE));
1349 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
b22128ef
JM		 1350}
1351
1352
1353void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1354{
1355 os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1356 p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1357 os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1358 p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1359 *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1360}
1361
1362
1363int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1364{
1365 p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1366 p2p_random(params->passphrase, 8);
1367 return 0;
1368}
1369
1370
1371void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1372{
1373 struct p2p_go_neg_results res;
1374 int go = peer->go_state == LOCAL_GO;
1375 struct p2p_channels intersection;
1376 int freqs;
1377 size_t i, j;
1378
1379 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1380 "P2P: GO Negotiation with " MACSTR " completed (%s will be "
c5db8e51 1381 "GO)", MAC2STR(peer->info.p2p_device_addr),
b22128ef
JM		 1382 go ? "local end" : "peer");
1383
1384 os_memset(&res, 0, sizeof(res));
1385 res.role_go = go;
c5db8e51 1386 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
b22128ef
JM		 1387 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1388 res.wps_method = peer->wps_method;
acc247b2
JM		 1389 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1390 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1391 res.persistent_group = 2;
1392 else
1393 res.persistent_group = 1;
1394 }
b22128ef
JM		 1395
1396 if (go) {
1397 /* Setup AP mode for WPS provisioning */
1398 res.freq = p2p_channel_to_freq(p2p->cfg->country,
1399 p2p->op_reg_class,
1400 p2p->op_channel);
1401 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1402 res.ssid_len = p2p->ssid_len;
1403 p2p_random(res.passphrase, 8);
e9a7ae41 1404 } else {
b22128ef 1405 res.freq = peer->oper_freq;
e9a7ae41
JM		 1406 if (p2p->ssid_len) {
1407 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1408 res.ssid_len = p2p->ssid_len;
1409 }
1410 }
b22128ef
JM		 1411
1412 p2p_channels_intersect(&p2p->channels, &peer->channels,
1413 &intersection);
1414 freqs = 0;
1415 for (i = 0; i < intersection.reg_classes; i++) {
1416 struct p2p_reg_class *c = &intersection.reg_class[i];
1417 if (freqs + 1 == P2P_MAX_CHANNELS)
1418 break;
1419 for (j = 0; j < c->channels; j++) {
1420 int freq;
1421 if (freqs + 1 == P2P_MAX_CHANNELS)
1422 break;
1423 freq = p2p_channel_to_freq(peer->country, c->reg_class,
1424 c->channel[j]);
1425 if (freq < 0)
1426 continue;
1427 res.freq_list[freqs++] = freq;
1428 }
1429 }
1430
ae3e3421
JM		 1431 res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1432
b22128ef 1433 p2p_clear_timeout(p2p);
4458d915 1434 p2p->ssid_set = 0;
b22128ef
JM		 1435 peer->go_neg_req_sent = 0;
1436 peer->wps_method = WPS_NOT_READY;
1437
1438 p2p_set_state(p2p, P2P_PROVISIONING);
1439 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1440}
1441
1442
1443static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1444 const u8 *data, size_t len, int rx_freq)
1445{
1446 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1447 "P2P: RX P2P Public Action from " MACSTR, MAC2STR(sa));
1448 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1449
1450 if (len < 1)
1451 return;
1452
1453 switch (data[0]) {
1454 case P2P_GO_NEG_REQ:
1455 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1456 break;
1457 case P2P_GO_NEG_RESP:
1458 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1459 break;
1460 case P2P_GO_NEG_CONF:
1461 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1462 break;
1463 case P2P_INVITATION_REQ:
1464 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1465 rx_freq);
1466 break;
1467 case P2P_INVITATION_RESP:
1468 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1469 break;
1470 case P2P_PROV_DISC_REQ:
1471 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1472 break;
1473 case P2P_PROV_DISC_RESP:
1474 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1475 break;
1476 case P2P_DEV_DISC_REQ:
1477 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1478 break;
1479 case P2P_DEV_DISC_RESP:
1480 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1481 break;
1482 default:
1483 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1484 "P2P: Unsupported P2P Public Action frame type %d",
1485 data[0]);
1486 break;
1487 }
1488}
1489
1490
19df9b07
JM		 1491static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1492 const u8 *sa, const u8 *bssid, const u8 *data,
1493 size_t len, int freq)
b22128ef
JM		 1494{
1495 if (len < 1)
1496 return;
1497
1498 switch (data[0]) {
1499 case WLAN_PA_VENDOR_SPECIFIC:
1500 data++;
1501 len--;
1502 if (len < 3)
1503 return;
1504 if (WPA_GET_BE24(data) != OUI_WFA)
1505 return;
1506
1507 data += 3;
1508 len -= 3;
1509 if (len < 1)
1510 return;
1511
1512 if (*data != P2P_OUI_TYPE)
1513 return;
1514
1515 p2p_rx_p2p_action(p2p, sa, data + 1, len - 1, freq);
1516 break;
1517 case WLAN_PA_GAS_INITIAL_REQ:
1518 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1519 break;
1520 case WLAN_PA_GAS_INITIAL_RESP:
18708aad
JM		 1521 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1522 break;
1523 case WLAN_PA_GAS_COMEBACK_REQ:
1524 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1525 break;
1526 case WLAN_PA_GAS_COMEBACK_RESP:
1527 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
b22128ef
JM		 1528 break;
1529 }
1530}
1531
1532
1533void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1534 const u8 *bssid, u8 category,
1535 const u8 *data, size_t len, int freq)
1536{
1537 if (category == WLAN_ACTION_PUBLIC) {
1538 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1539 return;
1540 }
1541
1542 if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1543 return;
1544
1545 if (len < 4)
1546 return;
1547
1548 if (WPA_GET_BE24(data) != OUI_WFA)
1549 return;
1550 data += 3;
1551 len -= 3;
1552
1553 if (*data != P2P_OUI_TYPE)
1554 return;
1555 data++;
1556 len--;
1557
1558 /* P2P action frame */
1559 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1560 "P2P: RX P2P Action from " MACSTR, MAC2STR(sa));
1561 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1562
1563 if (len < 1)
1564 return;
1565 switch (data[0]) {
1566 case P2P_NOA:
1567 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1568 "P2P: Received P2P Action - Notice of Absence");
1569 /* TODO */
1570 break;
1571 case P2P_PRESENCE_REQ:
1572 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1573 break;
1574 case P2P_PRESENCE_RESP:
1575 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1576 break;
1577 case P2P_GO_DISC_REQ:
1578 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1579 break;
1580 default:
1581 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1582 "P2P: Received P2P Action - unknown type %u", data[0]);
1583 break;
1584 }
1585}
1586
1587
1588static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1589{
1590 struct p2p_data *p2p = eloop_ctx;
1591 if (p2p->go_neg_peer == NULL)
1592 return;
1593 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1594 p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1595 p2p_connect_send(p2p, p2p->go_neg_peer);
1596}
1597
1598
1599static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1600{
1601 struct p2p_data *p2p = eloop_ctx;
1602 if (p2p->invite_peer == NULL)
1603 return;
1604 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1605 p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr);
1606}
1607
1608
1609static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1610 const u8 *ie, size_t ie_len)
1611{
1612 struct p2p_message msg;
1613 struct p2p_device *dev;
1614
1615 os_memset(&msg, 0, sizeof(msg));
1616 if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1617 {
1618 p2p_parse_free(&msg);
1619 return; /* not a P2P probe */
1620 }
1621
1622 if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
1623 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
1624 != 0) {
1625 /* The Probe Request is not part of P2P Device Discovery. It is
1626 * not known whether the source address of the frame is the P2P
1627 * Device Address or P2P Interface Address. Do not add a new
1628 * peer entry based on this frames.
1629 */
1630 p2p_parse_free(&msg);
1631 return;
1632 }
1633
1634 dev = p2p_get_device(p2p, addr);
1635 if (dev) {
1636 if (dev->country[0] == 0 && msg.listen_channel)
1637 os_memcpy(dev->country, msg.listen_channel, 3);
ed908a55 1638 os_get_time(&dev->last_seen);
b22128ef
JM		 1639 p2p_parse_free(&msg);
1640 return; /* already known */
1641 }
1642
1643 dev = p2p_create_device(p2p, addr);
1644 if (dev == NULL) {
1645 p2p_parse_free(&msg);
1646 return;
1647 }
1648
1649 os_get_time(&dev->last_seen);
1650 dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
1651
b22128ef
JM		 1652 if (msg.listen_channel) {
1653 os_memcpy(dev->country, msg.listen_channel, 3);
1654 dev->listen_freq = p2p_channel_to_freq(dev->country,
1655 msg.listen_channel[3],
1656 msg.listen_channel[4]);
1657 }
1658
b67d0d9e 1659 p2p_copy_wps_info(dev, 1, &msg);
e57ae6e1 1660
b22128ef
JM		 1661 p2p_parse_free(&msg);
1662
1663 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1664 "P2P: Created device entry based on Probe Req: " MACSTR
1665 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
c5db8e51
KRK		 1666 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
1667 dev->info.group_capab, dev->info.device_name,
1668 dev->listen_freq);
b22128ef
JM		 1669}
1670
1671
1672struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
1673 const u8 *addr,
1674 struct p2p_message *msg)
1675{
1676 struct p2p_device *dev;
1677
1678 dev = p2p_get_device(p2p, addr);
1679 if (dev) {
1680 os_get_time(&dev->last_seen);
1681 return dev; /* already known */
1682 }
1683
1684 dev = p2p_create_device(p2p, addr);
1685 if (dev == NULL)
1686 return NULL;
1687
1688 p2p_add_dev_info(p2p, addr, dev, msg);
1689
1690 return dev;
1691}
1692
1693
1694static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
1695{
1696 if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
1697 return 1;
1698 if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
1699 WPA_GET_BE32(&req_dev_type[2]) == 0 &&
1700 WPA_GET_BE16(&req_dev_type[6]) == 0)
1701 return 1; /* Category match with wildcard OUI/sub-category */
1702 return 0;
1703}
1704
1705
1706int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
1707 size_t num_req_dev_type)
1708{
1709 size_t i;
1710 for (i = 0; i < num_req_dev_type; i++) {
1711 if (dev_type_match(dev_type, req_dev_type[i]))
1712 return 1;
1713 }
1714 return 0;
1715}
1716
1717
1718/**
1719 * p2p_match_dev_type - Match local device type with requested type
1720 * @p2p: P2P module context from p2p_init()
1721 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1722 * Returns: 1 on match, 0 on mismatch
1723 *
1724 * This function can be used to match the Requested Device Type attribute in
1725 * WPS IE with the local device types for deciding whether to reply to a Probe
1726 * Request frame.
1727 */
1728int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
1729{
1730 struct wps_parse_attr attr;
1731 size_t i;
1732
1733 if (wps_parse_msg(wps, &attr))
1734 return 1; /* assume no Requested Device Type attributes */
1735
1736 if (attr.num_req_dev_type == 0)
1737 return 1; /* no Requested Device Type attributes -> match */
1738
1739 if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
1740 attr.num_req_dev_type))
1741 return 1; /* Own Primary Device Type matches */
1742
1743 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++)
1744 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
1745 attr.req_dev_type,
1746 attr.num_req_dev_type))
1747 return 1; /* Own Secondary Device Type matches */
1748
1749 /* No matching device type found */
1750 return 0;
1751}
1752
1753
1754struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
1755{
1756 struct wpabuf *buf;
1757 u8 *len;
1758
1759 buf = wpabuf_alloc(1000);
1760 if (buf == NULL)
1761 return NULL;
1762
b22128ef
JM		 1763 p2p_build_wps_ie(p2p, buf, DEV_PW_DEFAULT, 1);
1764
1765 /* P2P IE */
1766 len = p2p_buf_add_ie_hdr(buf);
1767 p2p_buf_add_capability(buf, p2p->dev_capab, 0);
1768 if (p2p->ext_listen_interval)
1769 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
1770 p2p->ext_listen_interval);
1771 p2p_buf_add_device_info(buf, p2p, NULL);
1772 p2p_buf_update_ie_hdr(buf, len);
1773
1774 return buf;
1775}
1776
1777
e1d52629
JM		 1778static int is_11b(u8 rate)
1779{
1780 return rate == 0x02 || rate == 0x04 || rate == 0x0b || rate == 0x16;
1781}
1782
1783
1784static int supp_rates_11b_only(struct ieee802_11_elems *elems)
1785{
1786 int num_11b = 0, num_others = 0;
1787 int i;
1788
1789 if (elems->supp_rates == NULL && elems->ext_supp_rates == NULL)
1790 return 0;
1791
1792 for (i = 0; elems->supp_rates && i < elems->supp_rates_len; i++) {
1793 if (is_11b(elems->supp_rates[i]))
1794 num_11b++;
1795 else
1796 num_others++;
1797 }
1798
70dbe3b6
JM		 1799 for (i = 0; elems->ext_supp_rates && i < elems->ext_supp_rates_len;
1800 i++) {
1801 if (is_11b(elems->ext_supp_rates[i]))
1802 num_11b++;
1803 else
1804 num_others++;
1805 }
1806
e1d52629
JM		 1807 return num_11b > 0 && num_others == 0;
1808}
1809
1810
04a85e44
JM		 1811static void p2p_reply_probe(struct p2p_data *p2p, const u8 *addr,
1812 const u8 *dst, const u8 *bssid, const u8 *ie,
b22128ef
JM		 1813 size_t ie_len)
1814{
1815 struct ieee802_11_elems elems;
1816 struct wpabuf *buf;
1817 struct ieee80211_mgmt *resp;
97c5b3c4 1818 struct p2p_message msg;
b22128ef
JM		 1819 struct wpabuf *ies;
1820
1821 if (!p2p->in_listen || !p2p->drv_in_listen) {
1822 /* not in Listen state - ignore Probe Request */
1823 return;
1824 }
1825
1826 if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
1827 ParseFailed) {
1828 /* Ignore invalid Probe Request frames */
1829 return;
1830 }
1831
1832 if (elems.p2p == NULL) {
1833 /* not a P2P probe - ignore it */
1834 return;
1835 }
1836
04a85e44
JM		 1837 if (dst && !is_broadcast_ether_addr(dst) &&
1838 os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
1839 /* Not sent to the broadcast address or our P2P Device Address
1840 */
1841 return;
1842 }
1843
1844 if (bssid && !is_broadcast_ether_addr(bssid)) {
1845 /* Not sent to the Wildcard BSSID */
1846 return;
1847 }
1848
b22128ef
JM		 1849 if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
1850 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
1851 0) {
1852 /* not using P2P Wildcard SSID - ignore */
1853 return;
1854 }
1855
e1d52629
JM		 1856 if (supp_rates_11b_only(&elems)) {
1857 /* Indicates support for 11b rates only */
1858 return;
1859 }
1860
97c5b3c4
JM		 1861 os_memset(&msg, 0, sizeof(msg));
1862 if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
1863 /* Could not parse P2P attributes */
1864 return;
1865 }
1866
1867 if (msg.device_id &&
1868 os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN != 0)) {
1869 /* Device ID did not match */
1870 p2p_parse_free(&msg);
1871 return;
1872 }
1873
b22128ef 1874 /* Check Requested Device Type match */
97c5b3c4
JM		 1875 if (msg.wps_attributes &&
1876 !p2p_match_dev_type(p2p, msg.wps_attributes)) {
b22128ef 1877 /* No match with Requested Device Type */
97c5b3c4 1878 p2p_parse_free(&msg);
b22128ef
JM		 1879 return;
1880 }
97c5b3c4 1881 p2p_parse_free(&msg);
b22128ef
JM		 1882
1883 if (!p2p->cfg->send_probe_resp)
1884 return; /* Response generated elsewhere */
1885
1886 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1887 "P2P: Reply to P2P Probe Request in Listen state");
1888
1889 /*
1890 * We do not really have a specific BSS that this frame is advertising,
1891 * so build a frame that has some information in valid format. This is
1892 * really only used for discovery purposes, not to learn exact BSS
1893 * parameters.
1894 */
1895 ies = p2p_build_probe_resp_ies(p2p);
1896 if (ies == NULL)
1897 return;
1898
1899 buf = wpabuf_alloc(200 + wpabuf_len(ies));
1900 if (buf == NULL) {
1901 wpabuf_free(ies);
1902 return;
1903 }
1904
1905 resp = NULL;
1906 resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
1907
1908 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
1909 (WLAN_FC_STYPE_PROBE_RESP << 4));
1910 os_memcpy(resp->da, addr, ETH_ALEN);
1911 os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
1912 os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
1913 resp->u.probe_resp.beacon_int = host_to_le16(100);
1914 /* hardware or low-level driver will setup seq_ctrl and timestamp */
1915 resp->u.probe_resp.capab_info =
1916 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
1917 WLAN_CAPABILITY_PRIVACY |
1918 WLAN_CAPABILITY_SHORT_SLOT_TIME);
1919
1920 wpabuf_put_u8(buf, WLAN_EID_SSID);
1921 wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
1922 wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1923
1924 wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
1925 wpabuf_put_u8(buf, 8);
1926 wpabuf_put_u8(buf, (60 / 5) | 0x80);
1927 wpabuf_put_u8(buf, 90 / 5);
1928 wpabuf_put_u8(buf, (120 / 5) | 0x80);
1929 wpabuf_put_u8(buf, 180 / 5);
1930 wpabuf_put_u8(buf, (240 / 5) | 0x80);
1931 wpabuf_put_u8(buf, 360 / 5);
1932 wpabuf_put_u8(buf, 480 / 5);
1933 wpabuf_put_u8(buf, 540 / 5);
1934
1935 wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
1936 wpabuf_put_u8(buf, 1);
1937 wpabuf_put_u8(buf, p2p->cfg->channel);
1938
1939 wpabuf_put_buf(buf, ies);
1940 wpabuf_free(ies);
1941
1942 p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
1943
1944 wpabuf_free(buf);
1945}
1946
1947
04a85e44
JM		 1948int p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
1949 const u8 *bssid, const u8 *ie, size_t ie_len)
b22128ef
JM		 1950{
1951 p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
1952
04a85e44 1953 p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len);
b22128ef
JM		 1954
1955 if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
1956 p2p->go_neg_peer &&
c5db8e51
KRK		 1957 os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
1958 == 0) {
b22128ef
JM		 1959 /* Received a Probe Request from GO Negotiation peer */
1960 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1961 "P2P: Found GO Negotiation peer - try to start GO "
1962 "negotiation from timeout");
1963 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
1964 return 1;
1965 }
1966
1967 if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
1968 p2p->invite_peer &&
c5db8e51
KRK		 1969 os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
1970 == 0) {
b22128ef
JM		 1971 /* Received a Probe Request from Invite peer */
1972 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1973 "P2P: Found Invite peer - try to start Invite from "
1974 "timeout");
1975 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
1976 return 1;
1977 }
1978
1979 return 0;
1980}
1981
1982
1983static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
4c08c0bd 1984 u8 *buf, size_t len, struct wpabuf *p2p_ie)
b22128ef
JM		 1985{
1986 struct wpabuf *tmp;
1987 u8 *lpos;
1988 size_t tmplen;
1989 int res;
72044390 1990 u8 group_capab;
b22128ef 1991
4c08c0bd
JM		 1992 if (p2p_ie == NULL)
1993 return 0; /* WLAN AP is not a P2P manager */
b22128ef
JM		 1994
1995 /*
1996 * (Re)Association Request - P2P IE
1997 * P2P Capability attribute (shall be present)
4c08c0bd
JM		 1998 * P2P Interface attribute (present if concurrent device and
1999 * P2P Management is enabled)
b22128ef
JM		 2000 */
2001 tmp = wpabuf_alloc(200);
2002 if (tmp == NULL)
2003 return -1;
2004
2005 lpos = p2p_buf_add_ie_hdr(tmp);
72044390
JM		 2006 group_capab = 0;
2007 if (p2p->num_groups > 0) {
2008 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2009 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2010 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2011 p2p->cross_connect)
2012 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2013 }
2014 p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
4c08c0bd
JM		 2015 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2016 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
b22128ef
JM		 2017 p2p_buf_add_p2p_interface(tmp, p2p);
2018 p2p_buf_update_ie_hdr(tmp, lpos);
2019
2020 tmplen = wpabuf_len(tmp);
2021 if (tmplen > len)
2022 res = -1;
2023 else {
2024 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2025 res = tmplen;
2026 }
2027 wpabuf_free(tmp);
2028
2029 return res;
2030}
2031
2032
2033int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
4c08c0bd 2034 size_t len, int p2p_group, struct wpabuf *p2p_ie)
b22128ef
JM		 2035{
2036 struct wpabuf *tmp;
2037 u8 *lpos;
2038 struct p2p_device *peer;
2039 size_t tmplen;
2040 int res;
2041
2042 if (!p2p_group)
4c08c0bd 2043 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
b22128ef
JM		 2044
2045 /*
2046 * (Re)Association Request - P2P IE
2047 * P2P Capability attribute (shall be present)
2048 * Extended Listen Timing (may be present)
2049 * P2P Device Info attribute (shall be present)
2050 */
2051 tmp = wpabuf_alloc(200);
2052 if (tmp == NULL)
2053 return -1;
2054
2055 peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2056
2057 lpos = p2p_buf_add_ie_hdr(tmp);
2058 p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
5be5305b
JM		 2059 if (p2p->ext_listen_interval)
2060 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2061 p2p->ext_listen_interval);
b22128ef
JM		 2062 p2p_buf_add_device_info(tmp, p2p, peer);
2063 p2p_buf_update_ie_hdr(tmp, lpos);
2064
2065 tmplen = wpabuf_len(tmp);
2066 if (tmplen > len)
2067 res = -1;
2068 else {
2069 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2070 res = tmplen;
2071 }
2072 wpabuf_free(tmp);
2073
2074 return res;
2075}
2076
2077
2078int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2079{
2080 struct wpabuf *p2p_ie;
2081 int ret;
2082
2083 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2084 if (p2p_ie == NULL)
2085 return 0;
2086
2087 ret = p2p_attr_text(p2p_ie, buf, end);
2088 wpabuf_free(p2p_ie);
2089 return ret;
2090}
2091
2092
0a70f34f
JM		 2093int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2094{
2095 struct wpabuf *p2p_ie;
2096 struct p2p_message msg;
2097
2098 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2099 P2P_IE_VENDOR_TYPE);
2100 if (p2p_ie == NULL)
2101 return -1;
2102 os_memset(&msg, 0, sizeof(msg));
2103 if (p2p_parse_p2p_ie(p2p_ie, &msg)) {
2104 wpabuf_free(p2p_ie);
2105 return -1;
2106 }
2107
2108 if (msg.p2p_device_addr == NULL) {
2109 wpabuf_free(p2p_ie);
2110 return -1;
2111 }
2112
2113 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2114 wpabuf_free(p2p_ie);
2115 return 0;
2116}
2117
2118
b22128ef
JM		 2119static void p2p_clear_go_neg(struct p2p_data *p2p)
2120{
2121 p2p->go_neg_peer = NULL;
2122 p2p_clear_timeout(p2p);
2123 p2p_set_state(p2p, P2P_IDLE);
2124}
2125
2126
2127void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2128{
2129 if (p2p->go_neg_peer == NULL) {
2130 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2131 "P2P: No pending Group Formation - "
2132 "ignore WPS registration success notification");
2133 return; /* No pending Group Formation */
2134 }
2135
2136 if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2137 0) {
2138 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2139 "P2P: Ignore WPS registration success notification "
2140 "for " MACSTR " (GO Negotiation peer " MACSTR ")",
2141 MAC2STR(mac_addr),
2142 MAC2STR(p2p->go_neg_peer->intended_addr));
2143 return; /* Ignore unexpected peer address */
2144 }
2145
2146 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2147 "P2P: Group Formation completed successfully with " MACSTR,
2148 MAC2STR(mac_addr));
2149
2150 p2p_clear_go_neg(p2p);
2151}
2152
2153
2154void p2p_group_formation_failed(struct p2p_data *p2p)
2155{
2156 if (p2p->go_neg_peer == NULL) {
2157 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2158 "P2P: No pending Group Formation - "
2159 "ignore group formation failure notification");
2160 return; /* No pending Group Formation */
2161 }
2162
2163 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2164 "P2P: Group Formation failed with " MACSTR,
2165 MAC2STR(p2p->go_neg_peer->intended_addr));
2166
2167 p2p_clear_go_neg(p2p);
2168}
2169
2170
2171struct p2p_data * p2p_init(const struct p2p_config *cfg)
2172{
2173 struct p2p_data *p2p;
2174
2175 if (cfg->max_peers < 1)
2176 return NULL;
2177
2178 p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2179 if (p2p == NULL)
2180 return NULL;
2181 p2p->cfg = (struct p2p_config *) (p2p + 1);
2182 os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2183 if (cfg->dev_name)
2184 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
b6e01800
JM		 2185 if (cfg->manufacturer)
2186 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2187 if (cfg->model_name)
2188 p2p->cfg->model_name = os_strdup(cfg->model_name);
2189 if (cfg->model_number)
2190 p2p->cfg->model_number = os_strdup(cfg->model_number);
2191 if (cfg->serial_number)
2192 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
b22128ef
JM		 2193
2194 p2p->min_disc_int = 1;
2195 p2p->max_disc_int = 3;
2196
2197 os_get_random(&p2p->next_tie_breaker, 1);
2198 p2p->next_tie_breaker &= 0x01;
2199 if (cfg->sd_request)
2200 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2201 p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2202 if (cfg->concurrent_operations)
2203 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2204 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2205
2206 dl_list_init(&p2p->devices);
2207
2208 eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2209 p2p_expiration_timeout, p2p, NULL);
2210
2211 return p2p;
2212}
2213
2214
2215void p2p_deinit(struct p2p_data *p2p)
2216{
2217 eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2218 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2219 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2220 p2p_flush(p2p);
046ef4aa 2221 p2p_free_req_dev_types(p2p);
b22128ef 2222 os_free(p2p->cfg->dev_name);
b6e01800
JM		 2223 os_free(p2p->cfg->manufacturer);
2224 os_free(p2p->cfg->model_name);
2225 os_free(p2p->cfg->model_number);
2226 os_free(p2p->cfg->serial_number);
b22128ef 2227 os_free(p2p->groups);
18708aad 2228 wpabuf_free(p2p->sd_resp);
3f9285ff 2229 os_free(p2p->after_scan_tx);
f95cac27 2230 p2p_remove_wps_vendor_extensions(p2p);
b22128ef
JM		 2231 os_free(p2p);
2232}
2233
2234
2235void p2p_flush(struct p2p_data *p2p)
2236{
2237 struct p2p_device *dev, *prev;
2238 p2p_clear_timeout(p2p);
2239 p2p_set_state(p2p, P2P_IDLE);
2240 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
2241 p2p->go_neg_peer = NULL;
2242 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
2243 dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2244 list) {
2245 dl_list_del(&dev->list);
2246 p2p_device_free(p2p, dev);
2247 }
2248 p2p_free_sd_queries(p2p);
f44ae207
JM		 2249 os_free(p2p->after_scan_tx);
2250 p2p->after_scan_tx = NULL;
b22128ef
JM		 2251}
2252
2253
9d562b79
SS		 2254int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2255{
2256 struct p2p_device *dev;
2257
2258 dev = p2p_get_device(p2p, addr);
2259 if (dev == NULL)
2260 return -1;
2261
2262 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Unauthorizing " MACSTR,
2263 MAC2STR(addr));
2264
2265 if (p2p->go_neg_peer == dev)
2266 p2p->go_neg_peer = NULL;
2267
2268 dev->wps_method = WPS_NOT_READY;
2269 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2270 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2271
2272 /* Check if after_scan_tx is for this peer. If so free it */
2273 if (p2p->after_scan_tx &&
2274 os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2275 os_free(p2p->after_scan_tx);
2276 p2p->after_scan_tx = NULL;
2277 }
2278
2279 return 0;
2280}
2281
2282
b22128ef
JM		 2283int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2284{
2285 os_free(p2p->cfg->dev_name);
2286 if (dev_name) {
2287 p2p->cfg->dev_name = os_strdup(dev_name);
2288 if (p2p->cfg->dev_name == NULL)
2289 return -1;
2290 } else
2291 p2p->cfg->dev_name = NULL;
2292 return 0;
2293}
2294
2295
b6e01800
JM		 2296int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
2297{
2298 os_free(p2p->cfg->manufacturer);
2299 p2p->cfg->manufacturer = NULL;
2300 if (manufacturer) {
2301 p2p->cfg->manufacturer = os_strdup(manufacturer);
2302 if (p2p->cfg->manufacturer == NULL)
2303 return -1;
2304 }
2305
2306 return 0;
2307}
2308
2309
2310int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
2311{
2312 os_free(p2p->cfg->model_name);
2313 p2p->cfg->model_name = NULL;
2314 if (model_name) {
2315 p2p->cfg->model_name = os_strdup(model_name);
2316 if (p2p->cfg->model_name == NULL)
2317 return -1;
2318 }
2319
2320 return 0;
2321}
2322
2323
2324int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
2325{
2326 os_free(p2p->cfg->model_number);
2327 p2p->cfg->model_number = NULL;
2328 if (model_number) {
2329 p2p->cfg->model_number = os_strdup(model_number);
2330 if (p2p->cfg->model_number == NULL)
2331 return -1;
2332 }
2333
2334 return 0;
2335}
2336
2337
2338int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
2339{
2340 os_free(p2p->cfg->serial_number);
2341 p2p->cfg->serial_number = NULL;
2342 if (serial_number) {
2343 p2p->cfg->serial_number = os_strdup(serial_number);
2344 if (p2p->cfg->serial_number == NULL)
2345 return -1;
2346 }
2347
2348 return 0;
2349}
2350
2351
2352void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
2353{
2354 p2p->cfg->config_methods = config_methods;
2355}
2356
2357
2358void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
2359{
2360 os_memcpy(p2p->cfg->uuid, uuid, 16);
2361}
2362
2363
b22128ef
JM		 2364int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
2365{
2366 os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
2367 return 0;
2368}
2369
2370
2371int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
2372 size_t num_dev_types)
2373{
2374 if (num_dev_types > P2P_SEC_DEVICE_TYPES)
2375 num_dev_types = P2P_SEC_DEVICE_TYPES;
2376 p2p->cfg->num_sec_dev_types = num_dev_types;
2377 os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
2378 return 0;
2379}
2380
2381
f95cac27
JMB		 2382void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
2383{
2384 int i;
2385
10c5d2a5 2386 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
f95cac27
JMB		 2387 wpabuf_free(p2p->wps_vendor_ext[i]);
2388 p2p->wps_vendor_ext[i] = NULL;
2389 }
2390}
2391
2392
2393int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2394 const struct wpabuf *vendor_ext)
2395{
2396 int i;
2397
2398 if (vendor_ext == NULL)
2399 return -1;
2400
10c5d2a5 2401 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
f95cac27
JMB		 2402 if (p2p->wps_vendor_ext[i] == NULL)
2403 break;
2404 }
10c5d2a5 2405 if (i >= P2P_MAX_WPS_VENDOR_EXT)
f95cac27
JMB		 2406 return -1;
2407
2408 p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
2409 if (p2p->wps_vendor_ext[i] == NULL)
2410 return -1;
2411
2412 return 0;
2413}
2414
2415
b22128ef
JM		 2416int p2p_set_country(struct p2p_data *p2p, const char *country)
2417{
2418 os_memcpy(p2p->cfg->country, country, 3);
2419 return 0;
2420}
2421
2422
2423void p2p_continue_find(struct p2p_data *p2p)
2424{
2425 struct p2p_device *dev;
2426 p2p_set_state(p2p, P2P_SEARCH);
2427 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2428 if (dev->flags & P2P_DEV_SD_SCHEDULE) {
2429 if (p2p_start_sd(p2p, dev) == 0)
2430 return;
2431 else
2432 break;
10c4edde
JM		 2433 } else if (dev->req_config_methods &&
2434 !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
2435 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send "
e3a0706b 2436 "pending Provision Discovery Request to "
10c4edde 2437 MACSTR " (config methods 0x%x)",
c5db8e51 2438 MAC2STR(dev->info.p2p_device_addr),
10c4edde 2439 dev->req_config_methods);
1ef2f7ff 2440 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
b22128ef
JM		 2441 return;
2442 }
2443 }
2444
2445 p2p_listen_in_find(p2p);
2446}
2447
2448
2449static void p2p_sd_cb(struct p2p_data *p2p, int success)
2450{
2451 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2452 "P2P: Service Discovery Query TX callback: success=%d",
2453 success);
2454 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2455
2456 if (!success) {
2457 if (p2p->sd_peer) {
2458 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
2459 p2p->sd_peer = NULL;
2460 }
2461 p2p_continue_find(p2p);
2462 return;
2463 }
2464
2465 if (p2p->sd_peer == NULL) {
2466 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2467 "P2P: No SD peer entry known");
2468 p2p_continue_find(p2p);
2469 return;
2470 }
2471
2472 /* Wait for response from the peer */
2473 p2p_set_state(p2p, P2P_SD_DURING_FIND);
2474 p2p_set_timeout(p2p, 0, 200000);
2475}
2476
6b56cc2d
JS		 2477
2478/**
2479 * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
2480 * @p2p: P2P module context from p2p_init()
2481 */
19df9b07 2482static void p2p_retry_pd(struct p2p_data *p2p)
6b56cc2d
JS		 2483{
2484 struct p2p_device *dev;
2485
2486 if (p2p->state != P2P_IDLE)
2487 return;
2488
2489 /*
2490 * Retry the prov disc req attempt only for the peer that the user had
2491 * requested for and provided a join has not been initiated on it
2492 * in the meantime.
2493 */
2494
2495 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2496 if (os_memcmp(p2p->pending_pd_devaddr,
2497 dev->info.p2p_device_addr, ETH_ALEN) != 0)
2498 continue;
2499 if (!dev->req_config_methods)
2500 continue;
2501 if (dev->flags & P2P_DEV_PD_FOR_JOIN)
2502 continue;
2503
2504 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send "
e3a0706b 2505 "pending Provision Discovery Request to "
6b56cc2d
JS		 2506 MACSTR " (config methods 0x%x)",
2507 MAC2STR(dev->info.p2p_device_addr),
2508 dev->req_config_methods);
1ef2f7ff 2509 p2p_send_prov_disc_req(p2p, dev, 0, 0);
6b56cc2d
JS		 2510 return;
2511 }
2512}
2513
2514
b22128ef
JM		 2515static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
2516{
2517 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2518 "P2P: Provision Discovery Request TX callback: success=%d",
2519 success);
6b56cc2d
JS		 2520
2521 /*
2522 * Postpone resetting the pending action state till after we actually
2523 * time out. This allows us to take some action like notifying any
2524 * interested parties about no response to the request.
2525 *
2526 * When the timer (below) goes off we check in IDLE, SEARCH, or
2527 * LISTEN_ONLY state, which are the only allowed states to issue a PD
2528 * requests in, if this was still pending and then raise notification.
2529 */
b22128ef
JM		 2530
2531 if (!success) {
6b56cc2d
JS		 2532 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2533
b22128ef
JM		 2534 if (p2p->state != P2P_IDLE)
2535 p2p_continue_find(p2p);
6b56cc2d
JS		 2536 else if (p2p->user_initiated_pd) {
2537 p2p->pending_action_state = P2P_PENDING_PD;
2538 p2p_set_timeout(p2p, 0, 300000);
2539 }
b22128ef
JM		 2540 return;
2541 }
2542
6b56cc2d
JS		 2543 /*
2544 * This postponing, of resetting pending_action_state, needs to be
2545 * done only for user initiated PD requests and not internal ones.
2546 */
2547 if (p2p->user_initiated_pd)
2548 p2p->pending_action_state = P2P_PENDING_PD;
2549 else
2550 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2551
b22128ef
JM		 2552 /* Wait for response from the peer */
2553 if (p2p->state == P2P_SEARCH)
2554 p2p_set_state(p2p, P2P_PD_DURING_FIND);
2555 p2p_set_timeout(p2p, 0, 200000);
2556}
2557
2558
2559int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
2560 int level, const u8 *ies, size_t ies_len)
2561{
2562 p2p_add_device(p2p, bssid, freq, level, ies, ies_len);
2563
2564 if (p2p->go_neg_peer && p2p->state == P2P_SEARCH &&
c5db8e51
KRK		 2565 os_memcmp(p2p->go_neg_peer->info.p2p_device_addr, bssid, ETH_ALEN)
2566 == 0) {
b22128ef
JM		 2567 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2568 "P2P: Found GO Negotiation peer - try to start GO "
2569 "negotiation");
2570 p2p_connect_send(p2p, p2p->go_neg_peer);
2571 return 1;
2572 }
2573
2574 return 0;
2575}
2576
2577
2578void p2p_scan_res_handled(struct p2p_data *p2p)
2579{
2580 if (!p2p->p2p_scan_running) {
2581 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan was not "
2582 "running, but scan results received");
2583 }
2584 p2p->p2p_scan_running = 0;
2585 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2586
2587 if (p2p_run_after_scan(p2p))
2588 return;
2589 if (p2p->state == P2P_SEARCH)
2590 p2p_continue_find(p2p);
2591}
2592
2593
6d92fa6e 2594void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
b22128ef
JM		 2595{
2596 u8 *len = p2p_buf_add_ie_hdr(ies);
2597 p2p_buf_add_capability(ies, p2p->dev_capab, 0);
6d92fa6e
JM		 2598 if (dev_id)
2599 p2p_buf_add_device_id(ies, dev_id);
b22128ef
JM		 2600 if (p2p->cfg->reg_class && p2p->cfg->channel)
2601 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
2602 p2p->cfg->reg_class,
2603 p2p->cfg->channel);
2604 if (p2p->ext_listen_interval)
2605 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
2606 p2p->ext_listen_interval);
2607 /* TODO: p2p_buf_add_operating_channel() if GO */
2608 p2p_buf_update_ie_hdr(ies, len);
2609}
2610
2611
206e1f42
JM		 2612size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
2613{
2614 return 100;
2615}
2616
2617
b22128ef
JM		 2618int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
2619{
2620 return p2p_attr_text(p2p_ie, buf, end);
2621}
2622
2623
2624static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
2625{
2626 struct p2p_device *dev = p2p->go_neg_peer;
2627
2628 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2629 "P2P: GO Negotiation Request TX callback: success=%d",
2630 success);
2631
2632 if (dev == NULL) {
2633 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2634 "P2P: No pending GO Negotiation");
2635 return;
2636 }
2637
2638 if (success) {
2639 dev->go_neg_req_sent++;
2640 if (dev->flags & P2P_DEV_USER_REJECTED) {
2641 p2p_set_state(p2p, P2P_IDLE);
2642 return;
2643 }
2644 }
2645
2646 if (!success &&
c5db8e51 2647 (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
b22128ef
JM		 2648 !is_zero_ether_addr(dev->member_in_go_dev)) {
2649 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2650 "P2P: Peer " MACSTR " did not acknowledge request - "
2651 "try to use device discoverability through its GO",
c5db8e51 2652 MAC2STR(dev->info.p2p_device_addr));
b22128ef
JM		 2653 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2654 p2p_send_dev_disc_req(p2p, dev);
2655 return;
2656 }
2657
2658 /*
2659 * Use P2P find, if needed, to find the other device from its listen
2660 * channel.
2661 */
2662 p2p_set_state(p2p, P2P_CONNECT);
2663 p2p_set_timeout(p2p, 0, 100000);
2664}
2665
2666
2667static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
2668{
2669 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2670 "P2P: GO Negotiation Response TX callback: success=%d",
2671 success);
2672 if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
2673 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2674 "P2P: Ignore TX callback event - GO Negotiation is "
2675 "not running anymore");
2676 return;
2677 }
2678 p2p_set_state(p2p, P2P_CONNECT);
2679 p2p_set_timeout(p2p, 0, 100000);
2680}
2681
2682
2683static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success)
2684{
2685 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2686 "P2P: GO Negotiation Response (failure) TX callback: "
2687 "success=%d", success);
fbe70272
JM		 2688 if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
2689 p2p_go_neg_failed(p2p, p2p->go_neg_peer,
2690 p2p->go_neg_peer->status);
2691 }
b22128ef
JM		 2692}
2693
2694
93b7ddd0
JM		 2695static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
2696 enum p2p_send_action_result result)
b22128ef
JM		 2697{
2698 struct p2p_device *dev;
2699
2700 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
93b7ddd0
JM		 2701 "P2P: GO Negotiation Confirm TX callback: result=%d",
2702 result);
b22128ef 2703 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
93b7ddd0
JM		 2704 if (result == P2P_SEND_ACTION_FAILED) {
2705 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2706 return;
2707 }
2708 if (result == P2P_SEND_ACTION_NO_ACK) {
b22128ef
JM		 2709 /*
2710 * It looks like the TX status for GO Negotiation Confirm is
2711 * often showing failure even when the peer has actually
2712 * received the frame. Since the peer may change channels
2713 * immediately after having received the frame, we may not see
2714 * an Ack for retries, so just dropping a single frame may
2715 * trigger this. To allow the group formation to succeed if the
2716 * peer did indeed receive the frame, continue regardless of
2717 * the TX status.
2718 */
2719 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2720 "P2P: Assume GO Negotiation Confirm TX was actually "
2721 "received by the peer even though Ack was not "
2722 "reported");
2723 }
2724
2725 dev = p2p->go_neg_peer;
2726 if (dev == NULL)
2727 return;
2728
2729 p2p_go_complete(p2p, dev);
2730}
2731
2732
2733void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
93b7ddd0
JM		 2734 const u8 *src, const u8 *bssid,
2735 enum p2p_send_action_result result)
b22128ef
JM		 2736{
2737 enum p2p_pending_action_state state;
93b7ddd0 2738 int success;
b22128ef
JM		 2739
2740 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2741 "P2P: Action frame TX callback (state=%d freq=%u dst=" MACSTR
93b7ddd0 2742 " src=" MACSTR " bssid=" MACSTR " result=%d",
b22128ef 2743 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
93b7ddd0
JM		 2744 MAC2STR(bssid), result);
2745 success = result == P2P_SEND_ACTION_SUCCESS;
b22128ef
JM		 2746 state = p2p->pending_action_state;
2747 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2748 switch (state) {
2749 case P2P_NO_PENDING_ACTION:
2750 break;
2751 case P2P_PENDING_GO_NEG_REQUEST:
2752 p2p_go_neg_req_cb(p2p, success);
2753 break;
2754 case P2P_PENDING_GO_NEG_RESPONSE:
2755 p2p_go_neg_resp_cb(p2p, success);
2756 break;
2757 case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
2758 p2p_go_neg_resp_failure_cb(p2p, success);
2759 break;
2760 case P2P_PENDING_GO_NEG_CONFIRM:
93b7ddd0 2761 p2p_go_neg_conf_cb(p2p, result);
b22128ef
JM		 2762 break;
2763 case P2P_PENDING_SD:
2764 p2p_sd_cb(p2p, success);
2765 break;
2766 case P2P_PENDING_PD:
2767 p2p_prov_disc_cb(p2p, success);
2768 break;
2769 case P2P_PENDING_INVITATION_REQUEST:
2770 p2p_invitation_req_cb(p2p, success);
2771 break;
2772 case P2P_PENDING_INVITATION_RESPONSE:
2773 p2p_invitation_resp_cb(p2p, success);
2774 break;
2775 case P2P_PENDING_DEV_DISC_REQUEST:
2776 p2p_dev_disc_req_cb(p2p, success);
2777 break;
2778 case P2P_PENDING_DEV_DISC_RESPONSE:
2779 p2p_dev_disc_resp_cb(p2p, success);
2780 break;
2781 case P2P_PENDING_GO_DISC_REQ:
2782 p2p_go_disc_req_cb(p2p, success);
2783 break;
2784 }
2785}
2786
2787
2788void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
2789 unsigned int duration)
2790{
2791 if (freq == p2p->pending_client_disc_freq) {
2792 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2793 "P2P: Client discoverability remain-awake completed");
2794 p2p->pending_client_disc_freq = 0;
2795 return;
2796 }
2797
2798 if (freq != p2p->pending_listen_freq) {
2799 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2800 "P2P: Unexpected listen callback for freq=%u "
2801 "duration=%u (pending_listen_freq=%u)",
2802 freq, duration, p2p->pending_listen_freq);
2803 return;
2804 }
2805
2806 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2807 "P2P: Starting Listen timeout(%u,%u) on freq=%u based on "
2808 "callback",
2809 p2p->pending_listen_sec, p2p->pending_listen_usec,
2810 p2p->pending_listen_freq);
2811 p2p->in_listen = 1;
0b8889d8 2812 p2p->drv_in_listen = freq;
b22128ef
JM		 2813 if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
2814 /*
2815 * Add 20 msec extra wait to avoid race condition with driver
2816 * remain-on-channel end event, i.e., give driver more time to
2817 * complete the operation before our timeout expires.
2818 */
2819 p2p_set_timeout(p2p, p2p->pending_listen_sec,
2820 p2p->pending_listen_usec + 20000);
2821 }
2822
2823 p2p->pending_listen_freq = 0;
2824}
2825
2826
2827int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
2828{
2829 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver ended Listen "
2830 "state (freq=%u)", freq);
2831 p2p->drv_in_listen = 0;
2832 if (p2p->in_listen)
2833 return 0; /* Internal timeout will trigger the next step */
2834
2835 if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
e24cf97c
JM		 2836 if (p2p->go_neg_peer->connect_reqs >= 120) {
2837 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2838 "P2P: Timeout on sending GO Negotiation "
2839 "Request without getting response");
2840 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2841 return 0;
2842 }
2843
b22128ef
JM		 2844 p2p_set_state(p2p, P2P_CONNECT);
2845 p2p_connect_send(p2p, p2p->go_neg_peer);
2846 return 1;
2847 } else if (p2p->state == P2P_SEARCH) {
59acfe87
JM		 2848 if (p2p->p2p_scan_running) {
2849 /*
2850 * Search is already in progress. This can happen if
2851 * an Action frame RX is reported immediately after
2852 * the end of a remain-on-channel operation and the
2853 * response frame to that is sent using an offchannel
2854 * operation while in p2p_find. Avoid an attempt to
2855 * restart a scan here.
2856 */
2857 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan "
2858 "already in progress - do not try to start a "
2859 "new one");
2860 return 1;
2861 }
b22128ef
JM		 2862 p2p_search(p2p);
2863 return 1;
2864 }
2865
2866 return 0;
2867}
2868
2869
2870static void p2p_timeout_connect(struct p2p_data *p2p)
2871{
2872 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2873 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
2874 p2p_listen_in_find(p2p);
2875}
2876
2877
2878static void p2p_timeout_connect_listen(struct p2p_data *p2p)
2879{
2880 if (p2p->go_neg_peer) {
2881 if (p2p->drv_in_listen) {
2882 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is "
2883 "still in Listen state; wait for it to "
2884 "complete");
2885 return;
2886 }
9dac8c3e
FM		 2887
2888 if (p2p->go_neg_peer->connect_reqs >= 120) {
2889 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2890 "P2P: Timeout on sending GO Negotiation "
2891 "Request without getting response");
2892 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2893 return;
2894 }
2895
b22128ef
JM		 2896 p2p_set_state(p2p, P2P_CONNECT);
2897 p2p_connect_send(p2p, p2p->go_neg_peer);
2898 } else
2899 p2p_set_state(p2p, P2P_IDLE);
2900}
2901
2902
2903static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
2904{
2905 /*
2906 * TODO: could remain constantly in Listen state for some time if there
2907 * are no other concurrent uses for the radio. For now, go to listen
2908 * state once per second to give other uses a chance to use the radio.
2909 */
2910 p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
d58ed4e3 2911 p2p_set_timeout(p2p, 0, 500000);
b22128ef
JM		 2912}
2913
2914
2915static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
2916{
2917 struct p2p_device *dev = p2p->go_neg_peer;
2918
2919 if (dev == NULL) {
2920 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2921 "P2P: Unknown GO Neg peer - stop GO Neg wait");
2922 return;
2923 }
2924
2925 dev->wait_count++;
2926 if (dev->wait_count >= 120) {
2927 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2928 "P2P: Timeout on waiting peer to become ready for GO "
2929 "Negotiation");
2930 p2p_go_neg_failed(p2p, dev, -1);
2931 return;
2932 }
2933
2934 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2935 "P2P: Go to Listen state while waiting for the peer to become "
2936 "ready for GO Negotiation");
2937 p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
2938 p2p_listen_in_find(p2p);
2939}
2940
2941
2942static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
2943{
2944 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2945 "P2P: Service Discovery Query timeout");
2946 if (p2p->sd_peer) {
2947 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2948 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
2949 p2p->sd_peer = NULL;
2950 }
2951 p2p_continue_find(p2p);
2952}
2953
2954
2955static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
2956{
2957 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2958 "P2P: Provision Discovery Request timeout");
2959 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2960 p2p_continue_find(p2p);
2961}
2962
2963
6b56cc2d
JS		 2964static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
2965{
2966 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2967
2968 /*
2969 * For user initiated PD requests that we have not gotten any responses
2970 * for while in IDLE state, we retry them a couple of times before
2971 * giving up.
2972 */
2973 if (!p2p->user_initiated_pd)
2974 return;
2975
2976 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2977 "P2P: User initiated Provision Discovery Request timeout");
2978
2979 if (p2p->pd_retries) {
2980 p2p->pd_retries--;
2981 p2p_retry_pd(p2p);
2982 } else {
349b213c
JS		 2983 if (p2p->cfg->prov_disc_fail)
2984 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
2985 p2p->pending_pd_devaddr,
2986 P2P_PROV_DISC_TIMEOUT);
6b56cc2d
JS		 2987 p2p_reset_pending_pd(p2p);
2988 }
2989}
2990
2991
b22128ef
JM		 2992static void p2p_timeout_invite(struct p2p_data *p2p)
2993{
2994 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2995 p2p_set_state(p2p, P2P_INVITE_LISTEN);
04d8dad5
JM		 2996 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
2997 /*
2998 * Better remain on operating channel instead of listen channel
2999 * when running a group.
3000 */
3001 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Inviting in "
3002 "active GO role - wait on operating channel");
3003 p2p_set_timeout(p2p, 0, 100000);
3004 return;
3005 }
b22128ef
JM		 3006 p2p_listen_in_find(p2p);
3007}
3008
3009
3010static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3011{
3012 if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3013 p2p_set_state(p2p, P2P_INVITE);
3014 p2p_invite_send(p2p, p2p->invite_peer,
3015 p2p->invite_go_dev_addr);
3016 } else {
3017 if (p2p->invite_peer) {
3018 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3019 "P2P: Invitation Request retry limit reached");
3020 if (p2p->cfg->invitation_result)
3021 p2p->cfg->invitation_result(
3022 p2p->cfg->cb_ctx, -1, NULL);
3023 }
3024 p2p_set_state(p2p, P2P_IDLE);
3025 }
3026}
3027
3028
3029static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3030{
3031 struct p2p_data *p2p = eloop_ctx;
3032
3033 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Timeout (state=%s)",
3034 p2p_state_txt(p2p->state));
3035
3036 p2p->in_listen = 0;
3037
3038 switch (p2p->state) {
3039 case P2P_IDLE:
6b56cc2d
JS		 3040 /* Check if we timed out waiting for PD req */
3041 if (p2p->pending_action_state == P2P_PENDING_PD)
3042 p2p_timeout_prov_disc_req(p2p);
b22128ef
JM		 3043 break;
3044 case P2P_SEARCH:
6b56cc2d
JS		 3045 /* Check if we timed out waiting for PD req */
3046 if (p2p->pending_action_state == P2P_PENDING_PD)
3047 p2p_timeout_prov_disc_req(p2p);
b22128ef
JM		 3048 p2p_search(p2p);
3049 break;
3050 case P2P_CONNECT:
3051 p2p_timeout_connect(p2p);
3052 break;
3053 case P2P_CONNECT_LISTEN:
3054 p2p_timeout_connect_listen(p2p);
3055 break;
3056 case P2P_GO_NEG:
3057 break;
3058 case P2P_LISTEN_ONLY:
6b56cc2d
JS		 3059 /* Check if we timed out waiting for PD req */
3060 if (p2p->pending_action_state == P2P_PENDING_PD)
3061 p2p_timeout_prov_disc_req(p2p);
3062
b22128ef
JM		 3063 if (p2p->ext_listen_only) {
3064 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3065 "P2P: Extended Listen Timing - Listen State "
3066 "completed");
3067 p2p->ext_listen_only = 0;
3068 p2p_set_state(p2p, P2P_IDLE);
3069 }
3070 break;
3071 case P2P_WAIT_PEER_CONNECT:
3072 p2p_timeout_wait_peer_connect(p2p);
3073 break;
3074 case P2P_WAIT_PEER_IDLE:
3075 p2p_timeout_wait_peer_idle(p2p);
3076 break;
3077 case P2P_SD_DURING_FIND:
3078 p2p_timeout_sd_during_find(p2p);
3079 break;
3080 case P2P_PROVISIONING:
3081 break;
3082 case P2P_PD_DURING_FIND:
3083 p2p_timeout_prov_disc_during_find(p2p);
3084 break;
3085 case P2P_INVITE:
3086 p2p_timeout_invite(p2p);
3087 break;
3088 case P2P_INVITE_LISTEN:
3089 p2p_timeout_invite_listen(p2p);
3090 break;
39185dfa
JM		 3091 case P2P_SEARCH_WHEN_READY:
3092 break;
b22128ef
JM		 3093 }
3094}
3095
3096
3097int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
3098{
3099 struct p2p_device *dev;
3100
3101 dev = p2p_get_device(p2p, peer_addr);
3102 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Local request to reject "
3103 "connection attempts by peer " MACSTR, MAC2STR(peer_addr));
3104 if (dev == NULL) {
3105 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer " MACSTR
3106 " unknown", MAC2STR(peer_addr));
3107 return -1;
3108 }
3109 dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
3110 dev->flags |= P2P_DEV_USER_REJECTED;
3111 return 0;
3112}
3113
3114
e5a359cf 3115const char * p2p_wps_method_text(enum p2p_wps_method method)
b22128ef
JM		 3116{
3117 switch (method) {
3118 case WPS_NOT_READY:
3119 return "not-ready";
b22128ef
JM		 3120 case WPS_PIN_DISPLAY:
3121 return "Display";
3122 case WPS_PIN_KEYPAD:
3123 return "Keypad";
3124 case WPS_PBC:
3125 return "PBC";
3126 }
3127
3128 return "??";
3129}
3130
3131
3132static const char * p2p_go_state_text(enum p2p_go_state go_state)
3133{
3134 switch (go_state) {
3135 case UNKNOWN_GO:
3136 return "unknown";
3137 case LOCAL_GO:
3138 return "local";
3139 case REMOTE_GO:
3140 return "remote";
3141 }
3142
3143 return "??";
3144}
3145
3146
b3ffc80b
JM		 3147const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
3148 const u8 *addr, int next)
b22128ef
JM		 3149{
3150 struct p2p_device *dev;
b22128ef
JM		 3151
3152 if (addr)
3153 dev = p2p_get_device(p2p, addr);
3154 else
3155 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3156
3157 if (dev && next) {
3158 dev = dl_list_first(&dev->list, struct p2p_device, list);
3159 if (&dev->list == &p2p->devices)
3160 dev = NULL;
3161 }
3162
3163 if (dev == NULL)
b3ffc80b
JM		 3164 return NULL;
3165
3166 return &dev->info;
3167}
3168
3169
3170int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
3171 char *buf, size_t buflen)
3172{
3173 struct p2p_device *dev;
3174 int res;
3175 char *pos, *end;
3176 struct os_time now;
3177
3178 if (info == NULL)
b22128ef
JM		 3179 return -1;
3180
b3ffc80b
JM		 3181 dev = (struct p2p_device *) (((u8 *) info) -
3182 offsetof(struct p2p_device, info));
3183
b22128ef
JM		 3184 pos = buf;
3185 end = buf + buflen;
3186
b22128ef
JM		 3187 os_get_time(&now);
3188 res = os_snprintf(pos, end - pos,
3189 "age=%d\n"
3190 "listen_freq=%d\n"
b22128ef
JM		 3191 "wps_method=%s\n"
3192 "interface_addr=" MACSTR "\n"
3193 "member_in_go_dev=" MACSTR "\n"
3194 "member_in_go_iface=" MACSTR "\n"
b22128ef
JM		 3195 "go_neg_req_sent=%d\n"
3196 "go_state=%s\n"
3197 "dialog_token=%u\n"
3198 "intended_addr=" MACSTR "\n"
3199 "country=%c%c\n"
3200 "oper_freq=%d\n"
3201 "req_config_methods=0x%x\n"
10c4edde 3202 "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
b22128ef
JM		 3203 "status=%d\n"
3204 "wait_count=%u\n"
3205 "invitation_reqs=%u\n",
3206 (int) (now.sec - dev->last_seen.sec),
3207 dev->listen_freq,
b22128ef
JM		 3208 p2p_wps_method_text(dev->wps_method),
3209 MAC2STR(dev->interface_addr),
3210 MAC2STR(dev->member_in_go_dev),
3211 MAC2STR(dev->member_in_go_iface),
b22128ef
JM		 3212 dev->go_neg_req_sent,
3213 p2p_go_state_text(dev->go_state),
3214 dev->dialog_token,
3215 MAC2STR(dev->intended_addr),
3216 dev->country[0] ? dev->country[0] : '_',
3217 dev->country[1] ? dev->country[1] : '_',
3218 dev->oper_freq,
3219 dev->req_config_methods,
3220 dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
3221 "[PROBE_REQ_ONLY]" : "",
3222 dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
3223 dev->flags & P2P_DEV_NOT_YET_READY ?
3224 "[NOT_YET_READY]" : "",
3225 dev->flags & P2P_DEV_SD_INFO ? "[SD_INFO]" : "",
3226 dev->flags & P2P_DEV_SD_SCHEDULE ? "[SD_SCHEDULE]" :
3227 "",
3228 dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
3229 "[PD_PEER_DISPLAY]" : "",
3230 dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
3231 "[PD_PEER_KEYPAD]" : "",
3232 dev->flags & P2P_DEV_USER_REJECTED ?
3233 "[USER_REJECTED]" : "",
3234 dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
3235 "[PEER_WAITING_RESPONSE]" : "",
3236 dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
3237 "[PREFER_PERSISTENT_GROUP]" : "",
3238 dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
3239 "[WAIT_GO_NEG_RESPONSE]" : "",
3240 dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
3241 "[WAIT_GO_NEG_CONFIRM]" : "",
3242 dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
3243 "[GROUP_CLIENT_ONLY]" : "",
d5b20a73 3244 dev->flags & P2P_DEV_FORCE_FREQ ?
10c4edde
JM		 3245 "[FORCE_FREQ]" : "",
3246 dev->flags & P2P_DEV_PD_FOR_JOIN ?
3247 "[PD_FOR_JOIN]" : "",
b22128ef
JM		 3248 dev->status,
3249 dev->wait_count,
3250 dev->invitation_reqs);
3251 if (res < 0 || res >= end - pos)
3252 return pos - buf;
3253 pos += res;
3254
3255 if (dev->ext_listen_period) {
3256 res = os_snprintf(pos, end - pos,
3257 "ext_listen_period=%u\n"
3258 "ext_listen_interval=%u\n",
3259 dev->ext_listen_period,
3260 dev->ext_listen_interval);
3261 if (res < 0 || res >= end - pos)
3262 return pos - buf;
3263 pos += res;
3264 }
3265
3266 if (dev->oper_ssid_len) {
3267 res = os_snprintf(pos, end - pos,
3268 "oper_ssid=%s\n",
3269 wpa_ssid_txt(dev->oper_ssid,
3270 dev->oper_ssid_len));
3271 if (res < 0 || res >= end - pos)
3272 return pos - buf;
3273 pos += res;
3274 }
3275
3276 return pos - buf;
3277}
3278
3279
b3bcc0f5
JM		 3280int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
3281{
3282 return p2p_get_device(p2p, addr) != NULL;
3283}
3284
3285
b22128ef
JM		 3286void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
3287{
3288 if (enabled) {
3289 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client "
3290 "discoverability enabled");
3291 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3292 } else {
3293 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client "
3294 "discoverability disabled");
3295 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3296 }
3297}
3298
3299
3300static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
3301 u32 duration2, u32 interval2)
3302{
3303 struct wpabuf *req;
3304 struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
3305 u8 *len;
3306
3307 req = wpabuf_alloc(100);
3308 if (req == NULL)
3309 return NULL;
3310
3311 if (duration1 || interval1) {
3312 os_memset(&desc1, 0, sizeof(desc1));
3313 desc1.count_type = 1;
3314 desc1.duration = duration1;
3315 desc1.interval = interval1;
3316 ptr1 = &desc1;
3317
3318 if (duration2 || interval2) {
3319 os_memset(&desc2, 0, sizeof(desc2));
3320 desc2.count_type = 2;
3321 desc2.duration = duration2;
3322 desc2.interval = interval2;
3323 ptr2 = &desc2;
3324 }
3325 }
3326
3327 p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
3328 len = p2p_buf_add_ie_hdr(req);
3329 p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
3330 p2p_buf_update_ie_hdr(req, len);
3331
3332 return req;
3333}
3334
3335
3336int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
3337 const u8 *own_interface_addr, unsigned int freq,
3338 u32 duration1, u32 interval1, u32 duration2,
3339 u32 interval2)
3340{
3341 struct wpabuf *req;
3342
3343 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send Presence Request to "
3344 "GO " MACSTR " (own interface " MACSTR ") freq=%u dur1=%u "
3345 "int1=%u dur2=%u int2=%u",
3346 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
3347 freq, duration1, interval1, duration2, interval2);
3348
3349 req = p2p_build_presence_req(duration1, interval1, duration2,
3350 interval2);
3351 if (req == NULL)
3352 return -1;
3353
3354 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3f9285ff
JM		 3355 if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
3356 go_interface_addr,
3357 wpabuf_head(req), wpabuf_len(req), 200) < 0) {
b22128ef
JM		 3358 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3359 "P2P: Failed to send Action frame");
3360 }
3361 wpabuf_free(req);
3362
3363 return 0;
3364}
3365
3366
3367static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
3368 size_t noa_len, u8 dialog_token)
3369{
3370 struct wpabuf *resp;
3371 u8 *len;
3372
3373 resp = wpabuf_alloc(100 + noa_len);
3374 if (resp == NULL)
3375 return NULL;
3376
3377 p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
3378 len = p2p_buf_add_ie_hdr(resp);
3379 p2p_buf_add_status(resp, status);
3380 if (noa) {
3381 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
3382 wpabuf_put_le16(resp, noa_len);
3383 wpabuf_put_data(resp, noa, noa_len);
3384 } else
3385 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
3386 p2p_buf_update_ie_hdr(resp, len);
3387
3388 return resp;
3389}
3390
3391
3392static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
3393 const u8 *sa, const u8 *data, size_t len,
3394 int rx_freq)
3395{
3396 struct p2p_message msg;
3397 u8 status;
3398 struct wpabuf *resp;
3399 size_t g;
3400 struct p2p_group *group = NULL;
3401 int parsed = 0;
3402 u8 noa[50];
3403 int noa_len;
3404
3405 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3406 "P2P: Received P2P Action - P2P Presence Request");
3407
3408 for (g = 0; g < p2p->num_groups; g++) {
3409 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
3410 ETH_ALEN) == 0) {
3411 group = p2p->groups[g];
3412 break;
3413 }
3414 }
3415 if (group == NULL) {
3416 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3417 "P2P: Ignore P2P Presence Request for unknown group "
3418 MACSTR, MAC2STR(da));
3419 return;
3420 }
3421
3422 if (p2p_parse(data, len, &msg) < 0) {
3423 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3424 "P2P: Failed to parse P2P Presence Request");
3425 status = P2P_SC_FAIL_INVALID_PARAMS;
3426 goto fail;
3427 }
3428 parsed = 1;
3429
3430 if (msg.noa == NULL) {
3431 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3432 "P2P: No NoA attribute in P2P Presence Request");
3433 status = P2P_SC_FAIL_INVALID_PARAMS;
3434 goto fail;
3435 }
3436
3437 status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
3438
3439fail:
3440 if (p2p->cfg->get_noa)
3441 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
3442 sizeof(noa));
3443 else
3444 noa_len = -1;
3445 resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
3446 noa_len > 0 ? noa_len : 0,
3447 msg.dialog_token);
3448 if (parsed)
3449 p2p_parse_free(&msg);
3450 if (resp == NULL)
3451 return;
3452
3453 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3f9285ff
JM		 3454 if (p2p_send_action(p2p, rx_freq, sa, da, da,
3455 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
b22128ef
JM		 3456 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3457 "P2P: Failed to send Action frame");
3458 }
3459 wpabuf_free(resp);
3460}
3461
3462
3463static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
3464 const u8 *sa, const u8 *data, size_t len)
3465{
3466 struct p2p_message msg;
3467
3468 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3469 "P2P: Received P2P Action - P2P Presence Response");
3470
3471 if (p2p_parse(data, len, &msg) < 0) {
3472 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3473 "P2P: Failed to parse P2P Presence Response");
3474 return;
3475 }
3476
3477 if (msg.status == NULL || msg.noa == NULL) {
3478 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3479 "P2P: No Status or NoA attribute in P2P Presence "
3480 "Response");
3481 p2p_parse_free(&msg);
3482 return;
3483 }
3484
3485 if (*msg.status) {
3486 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3487 "P2P: P2P Presence Request was rejected: status %u",
3488 *msg.status);
3489 p2p_parse_free(&msg);
3490 return;
3491 }
3492
3493 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3494 "P2P: P2P Presence Request was accepted");
3495 wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
3496 msg.noa, msg.noa_len);
3497 /* TODO: process NoA */
3498 p2p_parse_free(&msg);
3499}
3500
3501
3502static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
3503{
3504 struct p2p_data *p2p = eloop_ctx;
3505
3506 if (p2p->ext_listen_interval) {
3507 /* Schedule next extended listen timeout */
3508 eloop_register_timeout(p2p->ext_listen_interval_sec,
3509 p2p->ext_listen_interval_usec,
3510 p2p_ext_listen_timeout, p2p, NULL);
3511 }
3512
f7a69057
JM		 3513 if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
3514 /*
3515 * This should not really happen, but it looks like the Listen
3516 * command may fail is something else (e.g., a scan) was
3517 * running at an inconvenient time. As a workaround, allow new
3518 * Extended Listen operation to be started.
3519 */
3520 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Previous "
3521 "Extended Listen operation had not been completed - "
3522 "try again");
3523 p2p->ext_listen_only = 0;
3524 p2p_set_state(p2p, P2P_IDLE);
3525 }
3526
b22128ef
JM		 3527 if (p2p->state != P2P_IDLE) {
3528 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip Extended "
3529 "Listen timeout in active state (%s)",
3530 p2p_state_txt(p2p->state));
3531 return;
3532 }
3533
3534 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Extended Listen timeout");
3535 p2p->ext_listen_only = 1;
3536 if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
3537 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start "
3538 "Listen state for Extended Listen Timing");
3539 p2p->ext_listen_only = 0;
3540 }
3541}
3542
3543
3544int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
3545 unsigned int interval)
3546{
3547 if (period > 65535 || interval > 65535 || period > interval ||
3548 (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
3549 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3550 "P2P: Invalid Extended Listen Timing request: "
3551 "period=%u interval=%u", period, interval);
3552 return -1;
3553 }
3554
3555 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
3556
3557 if (interval == 0) {
3558 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3559 "P2P: Disabling Extended Listen Timing");
3560 p2p->ext_listen_period = 0;
3561 p2p->ext_listen_interval = 0;
3562 return 0;
3563 }
3564
3565 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
3566 "P2P: Enabling Extended Listen Timing: period %u msec, "
3567 "interval %u msec", period, interval);
3568 p2p->ext_listen_period = period;
3569 p2p->ext_listen_interval = interval;
3570 p2p->ext_listen_interval_sec = interval / 1000;
3571 p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
3572
3573 eloop_register_timeout(p2p->ext_listen_interval_sec,
3574 p2p->ext_listen_interval_usec,
3575 p2p_ext_listen_timeout, p2p, NULL);
3576
3577 return 0;
3578}
3579
3580
3581void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3582 const u8 *ie, size_t ie_len)
3583{
3584 struct p2p_message msg;
3585
3586 if (bssid == NULL || ie == NULL)
3587 return;
3588
3589 os_memset(&msg, 0, sizeof(msg));
3590 if (p2p_parse_ies(ie, ie_len, &msg))
3591 return;
3592 if (msg.minor_reason_code == NULL)
3593 return;
3594
3595 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO,
3596 "P2P: Deauthentication notification BSSID " MACSTR
3597 " reason_code=%u minor_reason_code=%u",
3598 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3599
3600 p2p_parse_free(&msg);
3601}
3602
3603
3604void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3605 const u8 *ie, size_t ie_len)
3606{
3607 struct p2p_message msg;
3608
3609 if (bssid == NULL || ie == NULL)
3610 return;
3611
3612 os_memset(&msg, 0, sizeof(msg));
3613 if (p2p_parse_ies(ie, ie_len, &msg))
3614 return;
3615 if (msg.minor_reason_code == NULL)
3616 return;
3617
3618 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO,
3619 "P2P: Disassociation notification BSSID " MACSTR
3620 " reason_code=%u minor_reason_code=%u",
3621 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3622
3623 p2p_parse_free(&msg);
3624}
3625
3626
3627void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
3628{
3629 if (enabled) {
3630 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P "
3631 "Device operations enabled");
3632 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
3633 } else {
3634 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P "
3635 "Device operations disabled");
3636 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
3637 }
3638}
3639
3640
3641int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel)
3642{
3643 if (p2p_channel_to_freq(p2p->cfg->country, reg_class, channel) < 0)
3644 return -1;
3645
3646 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Set Listen channel: "
3647 "reg_class %u channel %u", reg_class, channel);
3648 p2p->cfg->reg_class = reg_class;
3649 p2p->cfg->channel = channel;
3650
3651 return 0;
3652}
3653
3654
3655int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
3656{
3657 wpa_hexdump_ascii(MSG_DEBUG, "P2P: New SSID postfix", postfix, len);
3658 if (postfix == NULL) {
3659 p2p->cfg->ssid_postfix_len = 0;
3660 return 0;
3661 }
3662 if (len > sizeof(p2p->cfg->ssid_postfix))
3663 return -1;
3664 os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
3665 p2p->cfg->ssid_postfix_len = len;
3666 return 0;
3667}
3668
3669
2463ba70
JS		 3670int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
3671 int cfg_op_channel)
3672{
3673 if (p2p_channel_to_freq(p2p->cfg->country, op_reg_class, op_channel)
3674 < 0)
3675 return -1;
3676
3677 wpa_msg(p2p->cfg->msg_ctx, MSG_INFO, "P2P: Set Operating channel: "
3678 "reg_class %u channel %u", op_reg_class, op_channel);
3679 p2p->cfg->op_reg_class = op_reg_class;
3680 p2p->cfg->op_channel = op_channel;
3681 p2p->cfg->cfg_op_channel = cfg_op_channel;
3682 return 0;
3683}
3684
3685
b22128ef
JM		 3686int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
3687 u8 *iface_addr)
3688{
3689 struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
3690 if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
3691 return -1;
3692 os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
3693 return 0;
3694}
80c9582a
JM		 3695
3696
4147a2cc
JM		 3697int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
3698 u8 *dev_addr)
3699{
3700 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
3701 if (dev == NULL)
3702 return -1;
c5db8e51 3703 os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4147a2cc
JM		 3704 return 0;
3705}
3706
3707
80c9582a
JM		 3708void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
3709{
3710 os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
3711 if (is_zero_ether_addr(p2p->peer_filter))
3712 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Disable peer "
3713 "filter");
3714 else
3715 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Enable peer "
3716 "filter for " MACSTR, MAC2STR(p2p->peer_filter));
3717}
72044390
JM		 3718
3719
3720void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
3721{
3722 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Cross connection %s",
3723 enabled ? "enabled" : "disabled");
3724 if (p2p->cross_connect == enabled)
3725 return;
3726 p2p->cross_connect = enabled;
3727 /* TODO: may need to tear down any action group where we are GO(?) */
3728}
f8d0131a
JM		 3729
3730
3731int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
3732{
3733 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
3734 if (dev == NULL)
3735 return -1;
3736 if (dev->oper_freq <= 0)
3737 return -1;
3738 return dev->oper_freq;
3739}
0f66abd2
SS		 3740
3741
3742void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
3743{
3744 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Intra BSS distribution %s",
3745 enabled ? "enabled" : "disabled");
3746 p2p->cfg->p2p_intra_bss = enabled;
3747}
b5c9da8d
JM		 3748
3749
3750void p2p_update_channel_list(struct p2p_data *p2p, struct p2p_channels *chan)
3751{
3752 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update channel list");
3753 os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
3754}
3f9285ff
JM		 3755
3756
3757int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3758 const u8 *src, const u8 *bssid, const u8 *buf,
3759 size_t len, unsigned int wait_time)
3760{
3761 if (p2p->p2p_scan_running) {
3762 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Delay Action "
3763 "frame TX until p2p_scan completes");
3764 if (p2p->after_scan_tx) {
3765 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Dropped "
3766 "previous pending Action frame TX");
3767 os_free(p2p->after_scan_tx);
3768 }
3769 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
3770 len);
3771 if (p2p->after_scan_tx == NULL)
3772 return -1;
3773 p2p->after_scan_tx->freq = freq;
3774 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
3775 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
3776 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
3777 p2p->after_scan_tx->len = len;
3778 p2p->after_scan_tx->wait_time = wait_time;
3779 os_memcpy(p2p->after_scan_tx + 1, buf, len);
3780 return 0;
3781 }
3782
3783 return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
3784 buf, len, wait_time);
3785}
7cfc4ac3
AGS		 3786
3787
3788void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
3789 int freq_overall)
3790{
3791 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Best channel: 2.4 GHz: %d,"
3792 " 5 GHz: %d, overall: %d", freq_24, freq_5, freq_overall);
3793 p2p->best_freq_24 = freq_24;
3794 p2p->best_freq_5 = freq_5;
3795 p2p->best_freq_overall = freq_overall;
3796}
231bbd03
SS		 3797
3798
3799const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
3800{
3801 if (p2p == NULL || p2p->go_neg_peer == NULL)
3802 return NULL;
c5db8e51 3803 return p2p->go_neg_peer->info.p2p_device_addr;
231bbd03 3804}
c165d81e
JB		 3805
3806
3807const struct p2p_peer_info *
3808p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
3809{
3810 struct p2p_device *dev;
3811
3812 if (addr) {
3813 dev = p2p_get_device(p2p, addr);
3814 if (!dev)
3815 return NULL;
3816
3817 if (!next) {
3818 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
3819 return NULL;
3820
3821 return &dev->info;
3822 } else {
3823 do {
3824 dev = dl_list_first(&dev->list,
3825 struct p2p_device,
3826 list);
3827 if (&dev->list == &p2p->devices)
3828 return NULL;
3829 } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
3830 }
3831 } else {
3832 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3833 if (!dev)
3834 return NULL;
3835 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
3836 dev = dl_list_first(&dev->list,
3837 struct p2p_device,
3838 list);
3839 if (&dev->list == &p2p->devices)
3840 return NULL;
3841 }
3842 }
3843
3844 return &dev->info;
3845}
303f60d3
JM		 3846
3847
3848int p2p_in_progress(struct p2p_data *p2p)
3849{
3850 if (p2p == NULL)
3851 return 0;
fc6997b3 3852 return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
303f60d3 3853}
Unnamed repository; edit this file 'description' to name the repository.